SI DIAMOND TECHNOLOGY INC
S-3, 2000-06-12
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT
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                                       Registration Statement No. ______________

      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 26, 2000


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------
                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                           SI DIAMOND TECHNOLOGY, INC.
         ----------------------------------------------------------------
        (Exact Name of small business issuer as specified in its charter)

          State of Texas                                 76-0273345
---------------------------------                  -----------------------
   (State or Other Jurisdiction                       (I.R.S. Employer
of Incorporation or Organization)                  Identification Number)

                                                       Tracy Vaught
                                                 Chief Financial Officer
   SI Diamond Technology, Inc.                 SI Diamond Technology, Inc.
3006 Longhorn Boulevard, Suite 107               3006 Longhorn Boulevard
       Austin, Texas 78758                         Austin, Texas 78758
          (512) 339-5020                            (512) 339-5020
-----------------------------------   -----------------------------------------
(Address, including zip code, and            (Name, address, including zip
 telephone number, including area          code, and telephone number
 code, of small business issuer's     including area code, of agent for service)
principal executive offices)


                              --------------------
                                   Copies To:
                                 Donald T. Locke
                             Kilpatrick Stockton LLP
                              3737 Glenwood Avenue
                                    Suite 400
                          Raleigh, North Carolina 27612

    APPROXIMATE  DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time
to time after this Registration Statement has been declared effective.

    If the only  securities  being  registered  on this form are  being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. |_|

    If any of the securities  being registered on this form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. |X|

    If this form is filed to  register  additional  securities  for an  offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the  Securities  Act  registration  statement  number of earlier  effective
registration statement for the same offering. |_|:

    If this form is a  post-effective  amendment  filed  pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. |_|:

    If delivery of the  prospectus  is expected to be made pursuant to Rule 434,
please check the following box. |_|
<TABLE>
<CAPTION>

                                                  CALCULATION OF REGISTRATION FEE

 ======================================================================================================================

                Title of Each                                 Proposed Maximum    Proposed Maximum      Amount of
             Class of Securities            Amount to be       Offering Price    Aggregate Offering  Registration Fee
              to be Registered               Registered         Per Share <F2>        Price <F2>
-----------------------------------------------------------------------------------------------------------------------
<S>                                          <C>                   <C>             <C>                  <C>      <C>

Common stock, par value $.001 per share...    6,288,271
 ----------------------------------------------------------------------------------------------------------------------

 Common stock underlying warrants.........   10,080,000
 ----------------------------------------------------------------------------------------------------------------------

      Total                                  16,368,271            $1.648          $26,974,910.608      $544.87<F1>
 ======================================================================================================================
<FN>
<F1>  Amount  represents an increase in the amount  offered of 1,252,374  shares
      for which the registration fee is calculated.  All other shares subject to
      this  registration  statement  have  previously  been  registered  and the
      registration fees paid for.
<F2>  Estimated  solely for the  purpose of  calculating  the  registration  fee
      pursuant  to Rule  457(c),  based on the average of the high and low sales
      prices per share of common stock as reported by the OTC Bulletin  Board on
      June 6, 2000.
</FN>
</TABLE>

         THE REGISTRANT HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE
OR DATES AS MAY BE NECESSARY TO DELAY ITS  EFFECTIVE  DATE UNTIL THE  REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY  STATES THAT THIS REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.


<PAGE>

                                EXPLANATORY NOTE


         SI Diamond has previously filed Registration  Statement Nos. 333-24801,
333-38941,  333-40711 and 333-78907 to register  shares of its common stock,  as
well as shares of its common stock  underlying  warrants held by certain selling
shareholders.  This Registration Statement eliminates those selling shareholders
who have  previously  sold such  shares  pursuant to the  previous  registration
statements and also eliminates those selling shareholders to whom the Company no
longer has registration obligations.  This Registration Statement also registers
an  additional  1,252,374  shares  of common  stock or  shares  of common  stock
underlying warrants which have not previously been registered.


<PAGE>

                   SUBJECT TO COMPLETION, DATED JUNE 12, 2000


         The information contained in this prospectus is not complete and may be
changed. These securities may not be sold until the registration statement filed
with the Securities and Exchange Commission is effective. This prospectus is not
an offer to sell  these  securities  and it is not  soliciting  any offer to buy
these securities in any state where the offer or sale is not permitted.


<PAGE>


PROSPECTUS


                           SI DIAMOND TECHNOLOGY, INC.

                        7,390,038 Shares of Common Stock
                           (Par Value $.001 Per Share)

                        10,080,000 Shares of Common Stock
                               Underlying Warrants

         The shareholders of SI Diamond Technology,  Inc. identified on pages 21
and 22 may offer and sell the  shares  covered by this  Prospectus  from time to
time. The shares offered for sale:

         o        are  presently  outstanding,  or will be issued as a result of
                  existing  agreements,  or

         o        underlie certain existing warrants to purchase common stock.

         This offering is not being underwritten.  The selling shareholders will
pay all underwriting  discounts and selling  commissions,  if any, applicable to
the sale of the shares.

         SI Diamond will receive the proceeds  from the exercise of the warrants
but will not receive any proceeds from the sale of the shares of common stock by
the selling shareholders.  SI Diamond will pay substantially all of the expenses
of the  registration  of the  sale of the  shares.  SI  Diamond  has  agreed  to
indemnify certain of the selling shareholders against certain civil liabilities,
including liabilities under the Securities Act of 1933.
See "Plan of Distribution and Selling Shareholders."

         SEE "RISK FACTORS" BEGINNING ON PAGE 4 FOR A DISCUSSION OF CERTAIN RISK
FACTORS WHICH YOU SHOULD CONSIDER.  YOU SHOULD READ THE ENTIRE PROSPECTUS BEFORE
MAKING AN INVESTMENT DECISION.

         SI  Diamond's  common  stock is traded and  quoted on the OTC  Bulletin
Board under the symbol "SIDT".  On June 6, 2000, the closing price of the common
stock as reported on the OTC Bulletin Board was $1.625 per share.

         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS  IS TRUTHFUL OR  COMPLETE.  ANY  REPRESENTATION  TO THE CONTRARY IS A
CRIMINAL OFFENSE.
                                 ---------------
                  The date of this Prospectus is June __, 2000.



<PAGE>
                               PROSPECTUS SUMMARY

           THE FOLLOWING SUMMARY HIGHLIGHTS SELECTED INFORMATION FROM
       THIS DOCUMENT AND MAY NOT CONTAIN ALL THE INFORMATION IMPORTANT TO
      YOU. YOU SHOULD READ CAREFULLY THIS ENTIRE DOCUMENT AND THE DOCUMENTS
      TO WHICH WE HAVE REFERRED YOU. UNLESS THE CONTEXT OTHERWISE REQUIRES,
       THE TERM "SI DIAMOND" REFERS TO SI DIAMOND TECHNOLOGY, INC. AND ITS
                                  SUBSIDIARIES.


                                   SI DIAMOND

         The  executive  offices of SI  Diamond  are  located  at 3006  Longhorn
Boulevard,  Suite 107,  Austin,  Texas 78758,  and its telephone number is (512)
339-5020.

                                  THE OFFERING

         This prospectus relates to 16,368,271 shares of common stock, par value
$.001 per share, of SI Diamond Technology, Inc., a Texas corporation,  which may
be offered for sale by certain  shareholders  of the Company  from time to time.
The shares offered for sale:

         o        are  presently  outstanding,  or will be issued as a result of
                  existing agreements, or

         o        underlie certain existing warrants to purchase common stock.

As of June 6, 2000 the Company had the following securities  outstanding covered
by this Prospectus.

<TABLE>
<CAPTION>
                    Security Designation                  Amount Outstanding <F1>
                    --------------------                  ----------------------
                  <S>                                          <C>
                  Common stock                                  6,288,271

                  Common stock underlying warrants             10,080,000

 -------------------
<FN>
<F1>     This number  represents  either shares of common stock or the number of
         shares of common stock into which the warrants  are  convertible  as of
         the date of this Prospectus.
</FN>
</TABLE>


           See "Plan of Distribution and Selling Shareholders."

                              PLAN OF DISTRIBUTION

         This  offering  is not being  underwritten.  The  selling  shareholders
directly, through agents designated by them from time to time or through dealers
or underwriters also to be designated, may sell the shares from time to time, in
or through privately  negotiated  transactions,  or in one or more transactions,
including block transactions, on the OTC Bulletin Board or on any stock exchange
on which the shares may be listed in the future  pursuant  to and in  accordance
with the  applicable  rules of such exchange or otherwise.  The selling price of
the shares may be at market  prices  prevailing  at the time of sale,  at prices
related to such prevailing market prices or at negotiated  prices. To the extent
required, the specific shares to be sold, the names of the selling shareholders,
the respective purchase prices and public offering prices, the names of any such
agent,  dealer or underwriter  and any  applicable  commission or discounts with


                                       2
<PAGE>

respect to a particular  offer will be described in an accompanying  prospectus.
In addition,  any securities  covered by this prospectus  which qualify for sale
pursuant  to Rule 144 may be sold under Rule 144 rather  than  pursuant  to this
prospectus. See "Plan of Distribution and Selling Shareholders."

         SI Diamond will receive the proceeds from the exercise of the warrants,
but will not  receive  any  proceeds  from the sale of the shares by the selling
shareholders.  SI  Diamond  has  agreed  to  pay  all  of  the  expenses  of the
registration of the shares.  The selling  shareholders  must pay any commissions
and  discounts  of  underwriters,  dealers or agents.  SI Diamond  has agreed to
indemnify certain of the selling  shareholders against certain civil liabilities
under the Securities Act. See "Plan of Distribution and Selling Shareholders."

                      SELLING SHAREHOLDERS AS UNDERWRITERS

         The selling shareholders and any broker-dealers, agents or underwriters
that participate with the selling shareholders in the distribution of any of the
shares may be deemed to be  "Underwriters"  within the meaning of the Securities
Act,  and any  commissions  received by them and any profit on the resale of the
shares  purchased  by them  may be  deemed  to be  underwriting  commissions  or
discounts  under the  Securities  Act.  See "Plan of  Distribution  and  Selling
Shareholders."

                                  RISK FACTORS

         See  "Risk  Factors"  beginning  on  page 4 of  this  prospectus  for a
discussion  of certain  factors  related  to the  Company  and the common  stock
offered in this prospectus.

                                       3
<PAGE>

                                  RISK FACTORS

         The common stock being offered  hereby  involves a high degree of risk.
You should  carefully  consider the following  risk factors in addition to other
information  contained in this  prospectus in deciding  whether to invest in our
shares of common stock.

Our CFE product development is in its early stages and the outcome is uncertain
-------------------------------------------------------------------------------

Our  Carbon  Field  Emission  ("CFE")  technology,  and  products  that use this
technology,  will  require  significant  additional  development,   engineering,
testing and investment prior to commercialization. We have two leading potential
CFE products.  The first is a Picture  Element  Tube,  or PET,  intended for use
initially  in large  indoor  displays.  If the PET is  successful,  we expect to
enhance it to allow it to be used in outdoor  displays.  The PET or displays may
not be  successfully  developed.  We are also  working  on a product  called the
HyFED, which combines what we believe to be the best properties of a cathode ray
tube ("CRT") and field emission display ("FED").  It is our intention to license
this technology to be used in the production of flat-screen TV applications that
are cost  competitive  with CRTs. If either of these products are developed,  it
may not be  possible  for  potential  licensees  to produce  these  products  in
significant  quantities  at a  price  that is  competitive  with  other  similar
products.

We have no current royalty agreements
-------------------------------------

Our future  strategy is dependent on licensing our technology to other companies
and obtaining royalties based on products that these licensees develop and sell.
We have no plans to  manufacture  and sell any CFE  products  ourselves,  and as
such, we have no CFE product  revenues.  We signed a license  agreement in 1999,
for a payment of approximately $5.6 million. We have no other license agreements
at the present time that will provide any future  revenues.  It is our intention
that all future  license  agreements  will include a provision that requires the
payment of ongoing royalties.

Our success is dependent on our principal products and technologY
-----------------------------------------------------------------

Our CFE  technology  is an emerging  technology.  Our  financial  condition  and
prospects  are dependent  upon our  licensing the  technology to others and upon
market  acceptance  of our  Electronic  Billboard and other  electronic  display
products.  Additional  R&D needs to be  conducted on the CFE  technology  before
others can produce  products  using this  technology.  Market  acceptance of our
products and products using our technology will be dependent upon the perception
within  the   electronics  and   instrumentation   industries  of  the  quality,
reliability,    performance,    efficiency,    breadth   of   application    and
cost-effectiveness  of the products.  There can be no assurance  that we will be
able to gain  commercial  market  acceptance  for our products or develop  other
products for commercial use.


We have technologies subject to licenses
----------------------------------------

As a licensee of certain  research  technologies  through license and assignment
agreements with  Microelectronics and Computer Technology  Corporation,  we have
acquired rights to develop and commercialize certain research  technologies.  In
certain  cases,  we are  required  to pay  royalties  on the  sale  of  products
developed from the licensed technologies and fees on revenues from sublicensees.
We also have to pay for the costs of filing and prosecuting patent applications.
The agreement is subject to  termination  by either party,  upon notice,  in the
event of certain  defaults by the other party. We expect any royalty payments to
be insignificant.

                                       4
<PAGE>
 We have a history of operating losses
 -------------------------------------

We have a history of operating losses. Our first profitable year was 1999, based
on the strength of a license  agreement of approximately  $5.6 million signed in
March 1999. We have incurred  operating  losses as shown below:

                                              Net Income
            Year Ended December 31              (Loss)
            ----------------------          -------------
                    1992                    ($ 1,630,978)
                    1993                    ($ 7,527,677)
                    1994                    ($ 7,255,420)
                    1995                    ($14,389,856)
                    1996                    ($13,709,006)
                    1997                    ($ 6,320,901)
                    1998                    ($ 3,557,548)
                    1999                     $ 1,118,134


Although  we  expect  to be  profitable  in the  future,  we  may  not  be.  Our
profitability  in  2000  is  dependent  on the  signing  of  additional  license
agreements.  We may, however,  continue to incur additional operating losses for
an extended period of time as we continue to develop  products.  We do, however,
expect  the  magnitude  of  those  losses,   if  they  continue,   to  decrease.
WallaceSanders & Company,  independent  auditors of the Company,  have expressed
uncertainty  as to our  ability  to  continue  as a going  concern  based on our
accumulated  losses from operations in prior years. See  "Independent  Auditors'
Report." We have funded our  operations to date  primarily  through the proceeds
from the sale of our equity securities. In order to continue our transition from
a contract research and development organization to an organization with ongoing
operations, we anticipate that substantial product development expenditures will
continue to be incurred.


We are exposed to litigation liability
--------------------------------------

We were sued in 1996 by a former  customer of  Plasmatron  for damages  that the
former  customer  claimed that it incurred as a result of the alleged failure of
the machine provided by Plasmatron to perform as intended. That suit was settled
in January 2000. The majority of that  settlement was paid by a bonding  company
that had  provided a bond on the  original  contract.  Other  guarantors  on the
original  bond that may now be subject to  liability  as a result of the bonding
company's payment have sued us for indemnification.  We consider these claims to
be without merit and expect to have no liability in these suits;  however,  they
are still pending.

Various  trade  creditors  have also filed suit to collect  unpaid trade amounts
due.  We  expect  these  items to be  resolved  with no  material  impact on our
financial  statements.  If we were to become  subject to a judgment that exceeds
our ability to pay, that judgment would have a material  impact on our financial
condition and could affect our ability to continue in existence.



                                       5
<PAGE>

We have future capital needs and the source of that funding is uncertain
------------------------------------------------------------------------

We expect to continue to incur  substantial  expenses for R&D,  product testing,
production,  manufacturing,  product marketing, and administrative overhead. The
majority of R&D  expenditures  are for the development of our CFE technology and
our electronic  billboard product. Our business model is based on our installing
electronic   billboards  at  customer  sites  at  our  cost  and  then  deriving
advertising  revenues from the signs.  This will require a  significant  capital
investment on our part. Our electronic billboard product is available now and we
are in the process of  installing  our first units.  Some of our other  proposed
products may not be available for commercial sale or routine use for a period of
up to two years.  Commercialization  of our existing and proposed  products will
require  additional  capital in excess of our  current  capital.  A shortage  of
capital may prevent us from achieving  profitability  for an extended  period of
time.  Because the timing and receipt of revenues from the sale of products will
be  tied  to  the   achievement  of  certain   product   development,   testing,
manufacturing  and  marketing   objectives,   which  cannot  be  predicted  with
certainty,  there may be substantial  fluctuations in our results of operations.
If revenues do not increase as rapidly as anticipated, or if product development
and testing and  marketing  require  more funding  than  anticipated,  we may be
required to curtail our expansion  and/or seek  additional  financing from other
sources. We may seek additional financing through the offer of debt or equity or
any combination of the two at any time.

We have developed a plan to allow us to maintain operations until we are able to
sustain  ourselves  on our own  revenue.  However,  we only  have  the  existing
resources,  including  commitments,  to allow  us to  survive  for a  period  of
approximately  three months from the date of this report at our current spending
levels. We have been operating in this manner for an extended period of time and
we believe that we have the ability to continue to raise short term funding,  if
necessary,  to enable us to continue operations until our plan can be completed.
Our plan is primarily  dependent on raising  funds  through the licensing of our
technology,  revenue generated from the installation of our electronic billboard
product, and through debt and equity offerings.

Our plan is based on current  development  plans,  current  operating plans, the
current  regulatory  environment,  historical  experience in the  development of
electronic products and general economic  conditions.  Changes could occur which
would  cause  certain  assumptions  on which  this plan is based to be no longer
valid.  Our plan is primarily  dependent on increasing  revenues,  licensing our
technology,  and raising  additional  funds through  additional  debt and equity
offerings.  If adequate  funds are not available  from  operations or additional
sources  of  financing,  we may  have to  eliminate,  or  reduce  substantially,
expenditures  for  research  and  development,  testing  and  production  of our
products.  We may have to obtain funds through  arrangements with other entities
that may  require us to  relinquish  rights to certain  of our  technologies  or
products. These actions could materially and adversely affect us.


                                       6
<PAGE>

Rapid  technological  change could  render our products  obsolete and we may not
remain competitive
--------------------------------------------------------------------------------

The  display  industry  is  highly  competitive  and is  characterized  by rapid
technological change. Our existing and proposed products will compete with other
existing  products  and  may  compete  against  other  developing  technologies.
Development by others of new or improved products, processes or technologies may
reduce the size of  potential  markets for our  products.  There is no assurance
that other  products,  processes  or  technologies  will not render our proposed
products  obsolete or less  competitive.  Many of our  competitors  have greater
financial, managerial, distribution, and technical resources than we do. We will
be required to devote substantial financial resources and effort to further R&D.
There can be no assurance that we will  successfully  differentiate our products
from our  competitors'  products,  or that we will adapt to evolving markets and
technologies,  develop  new  products,  or achieve  and  maintain  technological
advantages.

Our products may not be accepted by the market
----------------------------------------------

Since our inception,  we have focused our product development and R&D efforts on
technologies  that we believe will be a significant  advancement  over currently
available technologies. With any new technology, there is a risk that the market
may not appreciate the benefits or recognize the potential  applications  of the
technology.  Market acceptance of our products and products using our technology
will  depend,  in part,  on our ability to convince  potential  customers of the
advantages of such products as compared to  competitive  products.  It will also
depend upon our ability to train manufacturers and others to use our products

We have limited manufacturing capacity and experience
-----------------------------------------------------

We have no established  commercial  manufacturing  facilities in the area of CFE
technology in which we are  conducting  our principal  research.  At the present
time, we have no intention of establishing a manufacturing  facility  related to
our CFE  technology.  We are focusing our efforts on licensing our technology to
others  for use in  their  manufacturing  processes.  The  management  team  has
commercial  manufacturing and marketing  experience in other industries and with
other  products in the  display  industry;  however,  we have no  experience  in
manufacturing our proposed CFE products.

In August  1999,  we  acquired  the assets of Sign  Builders  of  America,  Inc.
("SBOA").   SBOA  is  a  manufacturer  of  high  quality  signage  and  provided
significant  assistance in the development of our electronic  billboard product.
To the extent that any of our other products require  manufacturing  facilities,
we intend to contract with a qualified manufacturer.

We are dependent on the availability of materials and suppliers
---------------------------------------------------------------

The materials  used in producing  our current and future  products are purchased
from outside vendors. In certain  circumstances,  we may be required to bear the
risk of material  price  fluctuations.  We  anticipate  that the majority of raw
materials  used in products  to be  developed  by us will be readily  available.
However,  there is no assurance that the current availability of these materials
will continue in the future,  or if  available,  will be procurable at favorable
prices.


                                       7
<PAGE>
We may not be able to provide system integration
------------------------------------------------

In order to  prove  that our  technologies  work  and will  produce  a  complete
product,  we  must  ordinarily  integrate  a  number  of  highly  technical  and
complicated subsystems into a fully-integrated  prototype. There is no assurance
that we will be able to successfully  complete the  development  work on some of
our proposed products or ultimately develop any market for those products.


The loss of key personnel could adversely affect our business
-------------------------------------------------------------

Our future  success  will  depend on our  ability to attract  and retain  highly
qualified scientific,  technical and managerial personnel.  Competition for such
personnel  is intense.  We may not be able to attract  and retain all  personnel
necessary for the development of our business. In addition, much of the know-how
and  processes  developed  by us  reside  in our key  scientific  and  technical
personnel. The loss of the services of key scientific,  technical and managerial
personnel could have a material adverse effect on us.

We may be unable to  enforce  or defend  our  ownership  and use of  proprietary
technology
--------------------------------------------------------------------------------

Our  ability to compete  effectively  with other  companies  will  depend on our
ability to maintain the proprietary  nature of our technology.  Although we have
been awarded  patents,  have filed  applications  for patents,  or have licensed
technology under patents that we do not own, the degree of protection offered by
these  patents  or the  likelihood  that  pending  patents  will  be  issued  is
uncertain.  Competitors in both the United States and foreign countries, many of
which have substantially greater resources and have made substantial  investment
in competing technologies, may already have, or may apply for and obtain patents
that will  prevent,  limit or  interfere  with our  ability to make and sell our
products.  Competitors  may also  intentionally  infringe  on our  patents.  The
defense and prosecution of patent suits is both costly and time-consuming,  even
if the outcome is favorable to us. In foreign countries, the expenses associated
with such  proceedings  can be  prohibitive.  In addition,  there is an inherent
unpredictability  in obtaining and enforcing  patents in foreign  countries.  An
adverse  outcome in the defense of a patent suit could subject us to significant
liabilities  to  third  parties.   Although  third  parties  have  not  asserted
infringement  claims  against us, there is no assurance  that third parties will
not assert such claims in the future.

We also rely on  unpatented  proprietary  technology,  and there is no assurance
that others will not independently  develop the same or similar  technology,  or
otherwise obtain access to our proprietary technology.  To protect our rights in
these areas, we require  employees,  consultants,  advisors and collaborators to
enter  into  confidentiality  agreements.   These  agreements  may  not  provide
meaningful  protection for our trade  secrets,  know-how,  or other  proprietary
information in the event of any unauthorized use, misappropriation or disclosure
of such trade secrets, know-how, or other proprietary information. While we have
attempted to protect proprietary  technology that we develop or acquire and will
continue to attempt to protect future  proprietary  technology  through patents,
copyrights  and trade  secrets,  we believe  that our  success  will depend upon
further innovation and technological expertise.


                                       8
<PAGE>


Our revenues have been dependent on government contracts in the past
--------------------------------------------------------------------

In  previous  years,  a  significant  part of our  revenues  were  derived  from
contracts with agencies of the United States government.  Following is a summary
of those revenues in recent years:

                                            Revenues from         Percentage of
               Year Ended December 31       Gov. Contracts        Total Revenue
               ----------------------       ---------------       -------------

                         1992                $  930,000                  99%
                         1993                $1,147,000                  89%
                         1994                $  820,000                  41%
                         1995                $1,009,000                  33%
                         1996                $2,869,000                  24%
                         1998                $        0                   0%
                         1999                $        0                   0%


We currently have no significant  commitment for any future  government  funding
and do not intend to seek any government  funding unless it directly  relates to
achievement of our strategic objectives.

Contracts  involving the United  States  government  are, or may be,  subject to
various risks including, but not limited to, the following:

o        Unilateral termination for the convenience of the government
o        Reduction or modification  in the event of changes in the  government's
         requirements or budgetary constraints
o        Increased or unexpected  costs causing losses or reduced  profits under
         fixed-price  contracts or  unallowable  costs under cost  reimbursement
         contracts
o        Potential disclosure of our confidential information to third parties
o        The failure or inability of the prime  contractor  to perform its prime
         contract in circumstances where we are a subcontractor
o        The failure of the government to exercise  options  provided for in the
         contracts
o        The right of the  government to obtain a  non-exclusive,  royalty free,
         irrevocable  world-wide license to technology developed under contracts
         funded  by the  government  if we  fail  to  continue  to  develop  the
         technology

                                       9
<PAGE>
The market for our common stock is volatile
-------------------------------------------

         The market price of the shares of SI Diamond common stock, like that of
the  common  stock  of  many  emerging  technology  companies,   has  fluctuated
significantly  in recent  years and will  likely  continue to  fluctuate  in the
future.  The  prices  of such  securities  currently  rise and are  expected  to
continue to rise rapidly in response to certain  events,  such as  announcements
concerning product developments,  licenses and patents,  although the outcome of
such events may not be fully  determined.  Similarly,  prices of such securities
may fall rapidly if unfavorable  results are encountered in product  development
or market  acceptance.  In the event that SI Diamond achieves  earnings from the
sale of products,  securities analysts may begin predicting  quarterly earnings.
The failure of our  earnings to meet  analysts'  expectations  could result in a
significant  rapid decline in the market price of our common stock. In addition,
the stock market has experienced  and continues to experience  extreme price and
volume  fluctuations  which  have  affected  the  market  price  of  the  equity
securities of many  technology  companies and which have often been unrelated to
the operating performance of those companies. Such broad market fluctuations, as
well as general  economic and political  conditions,  may  adversely  affect the
market price of the common stock.

Shares of our common stock are eligible for future sale
-------------------------------------------------------

         As of June 6, 2000,  there were 56,631,840  shares of SI Diamond common
stock  outstanding,  of which 49,286,505 shares of such common stock were freely
tradable without restriction or further registration under the Securities Act by
persons other than  "affiliates"  of SI Diamond.  As of that date, the remaining
shares of SI  Diamond  common  stock were  deemed  "restricted  securities,"  as
defined  in Rule 144  under  the  Securities  Act,  and may not be resold in the
absence of  registration  under the  Securities  Act or pursuant to an exemption
from such  registration,  including  exemptions  provided  by Rule 144 under the
Securities Act. Under Rule 144, persons who have held securities for a period of
at  least  one  year  may  sell a  limited  amount  of such  securities  without
registration  under the  Securities  Act. Rule 144 also  permits,  under certain
circumstances,  persons  who are not  affiliates  of SI  Diamond,  to sell their
restricted  securities  without quantity  limitations once they have completed a
two-year holding period.

         The  Registration  Statement,  of  which  this  Prospectus  is a  part,
pertains to  6,288,271  shares of common stock which are  currently  "restricted
securities";  and  10,080,000  shares of common  stock which  underlie  existing
warrants.  SI  Diamond  is  obligated  to  maintain  the  effectiveness  of  the
Registration  Statement  for  varying  periods  of time,  pursuant  to  separate
agreements with certain groups of the selling shareholders.

         In addition to the shares of common stock which are  outstanding  as of
June 6, 2000,  7,463,926  shares of common stock have been reserved for issuance
pursuant to our stock option plans.  Approximately  10,080,000  shares of common
stock have also been  reserved for issuance  upon the exercise of warrants  that
have been issued by SI Diamond and  1,161,069  shares of common  stock have been
reserved for issuance upon conversion of the Company's Series G preferred stock.

         No prediction can be made as to the effect,  if any, that future sales,
or the availability of shares of SI Diamond common stock for future sales,  will
have on the market  price  prevailing  from time to time.  Sales of  substantial
amounts of SI Diamond  common  stock by SI Diamond or by  shareholders  who hold
"restricted  securities,"  or the  perception  that such sales may occur,  could
adversely affect prevailing market prices for the common stock.


                                       10
<PAGE>
Other classes of capital stock have prior and superior rights
-------------------------------------------------------------

         The rights of holders of the common stock to receive dividends or other
payments  with respect  thereto are subject to any prior and superior  rights of
holders of SI  Diamond's  preferred  stock.  As of June 6, 2000,  SI Diamond had
issued and  outstanding  900 shares of its Series G  preferred  stock,  its only
series  outstanding.  Additionally,  the holders of the Series G preferred stock
are entitled to a liquidation  preference  over the holders of the common stock.
The Board of Directors,  however,  has the authority to provide for the issuance
of additional  shares of preferred  stock in one or more  additional  series and
such shares may, in the Board's  discretion,  have prior and superior  rights to
receive dividends or other payments with respect thereto. In light of its future
capital  requirements,  SI Diamond could issue shares of preferred  stock at any
time having such prior and superior rights. See "Description of Capital Stock".

A possible  adverse  effect on the price of our common  stock could  result from
sales by selling shareholders in the market
--------------------------------------------------------------------------------

         Sales of or offers to sell substantial blocks of common stock currently
held  by  certain  shareholders,  or the  perception  by  investors,  investment
professionals  or  securities  analysts of the  possibility  that such sales may
occur could adversely affect the price of and market for the common stock.

         Upon  registration  in  accordance  with its  obligations,  the selling
shareholders  will be permitted to sell up to 16,368,271 shares of common stock,
of which  10,080,000  are shares of common  stock  subject to issuance  upon the
exercise of certain warrants.  The shares (assuming the exercise of all warrants
subject to the Registration  Statement)  represent  approximately  24.53% of the
shares of common stock  outstanding on the date hereof.  We will not receive any
proceeds from sales of shares held by such selling shareholders. SI Diamond will
receive the proceeds  from the  exercise of any  warrants to purchase  shares of
common stock.  SI Diamond is unable to predict how much it will receive from the
exercise of the warrants held by the Vision Mark Selling  Shareholder  since the
price of such warrants shall be established,  if at all, upon the achievement of
certain milestones by C&A Services, L.L.C. See "Plan of Distribution and Selling
Shareholder-Vision  Mark Selling  Shareholder." The exercise prices of all other
warrants range from $1.00 to $2.15 per share of SI Diamond's common stock. It is
unlikely that  significant  amounts of the warrants will be exercised  until the
trading price of the common stock exceeds the exercise price of the warrants, if
at all.

We have never paid dividends
----------------------------

         SI Diamond has never paid cash  dividends on its equity  securities and
does not intend to pay cash dividends in the foreseeable  future.  To the extent
the Company has  earnings in the future,  the Company  intends to reinvest  such
earnings in the business operations of the Company.

Our Restated Articles of Incorporation and Bylaws may inhibit a takeover
------------------------------------------------------------------------

         SI  Diamond's   Restated  Articles  and  Bylaws  contain  a  number  of
provisions  which could make its  acquisition by means of an unsolicited  tender
offer, a proxy contest or otherwise, more difficult, including the following:

         o        the Board is  authorized  to issue series of  preferred  stock
                  that could,  depending on the terms of such series, impede the
                  completion  of  a  merger,  tender  offer  or  other  takeover
                  attempt;


                                       11
<PAGE>

         o        the Board of  Directors  is  divided  into  three  classes  of
                  directors, with the result that approximately one-third of the
                  Board of Directors are elected each year; and

         o        except in limited  circumstances,  no shares of our  preferred
                  stock may be issued or sold to any  officer or  director of SI
                  Diamond or any shareholder  owning more than five percent (5%)
                  of SI Diamond's common stock without the affirmative vote of a
                  majority of its disinterested shareholders.

See  "Description  of Capital  Stock - Certain  Provisions  of the  Articles  of
Incorporation, Bylaws and Texas Law."

Our Restated Articles and Bylaws limit our directors'  liability and provide for
indemnification of directors and officers
--------------------------------------------------------------------------------

         SI Diamond's  Restated  Articles  provide that a director  will only be
liable to SI Diamond for the following:

         o        breaches  of  his  duty  of  loyalty  to SI  Diamond  and  its
                  shareholders,

         o        acts or  omissions  not in good  faith or which  constitute  a
                  breach  of  duty  of a  director  of SI  Diamond  or  involves
                  intentional misconduct or a knowing violation of law,

         o        transactions  from  which  a  director  receives  an  improper
                  benefit,  whether or not the benefit  resulted  from an action
                  taken within the scope of the director's office,

         o        acts or omissions for which liability is specifically provided
                  by statute, and

         o        acts  relating  to  unlawful  stock  purchases  or payments of
                  dividends.

Thus, SI Diamond may be prevented from  recovering  damages for certain  alleged
errors or omissions by its directors.

         The Bylaws also provide that, under certain  circumstances,  SI Diamond
will indemnify its officers and directors for liabilities incurred in connection
with their good faith acts.  Such an  indemnification  payment might deplete our
assets.  While Texas law permits a shareholder  to bring a derivative  action on
behalf of a corporation, the law relating to the remedies available to corporate
shareholders is constantly changing.  Shareholders who have questions concerning
the fiduciary  obligations  of the officers and  directors of SI Diamond  should
consult  with  independent  legal  counsel.   Insofar  as  indemnification   for
liabilities  arising  under the  Securities  Act may be permitted to  directors,
officers  and  controlling  persons  of SI  Diamond  pursuant  to the  foregoing
provisions, or otherwise, SI Diamond has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy
as expressed in the Securities Act and is, therefore, unenforceable.

There are risks associated with forward looking statements
----------------------------------------------------------

         This    prospectus    contains   some    forward-looking    statements.
Forward-looking  statements give our current expectations or forecasts of future
events.  You can identify  these  statements by the fact that they do not relate
strictly to historical or current  facts.  They use words such as  "anticipate",
"believe",  "expect",  "estimate",  "project", "intend", "plan", and other words

                                       12
<PAGE>

and  terms of  similar  meaning  in  connection  with any  discussion  of future
operating or financial  performance.  In  particular,  these include  statements
relating to future actions,  prospective  products or product approvals,  future
performance  or results of current  and  anticipated  products,  sales  efforts,
expenses, the outcome of contingencies such as legal proceedings,  and financial
results. From time to time, we also may provide oral or written  forward-looking
statements in other materials we release to the public.

         Any or all of our forward-looking  statements in this report and in any
other public  statements we make may turn out to be wrong.  They can be affected
by  inaccurate  assumptions  we  might  make or by  known  or  unknown  risks or
uncertainties. Many factors mentioned in the following discussion - for example,
product  development,  competition,  and the  availability  of funding - will be
important  in  determining  future  results.  Consequently,  no  forward-looking
statement can be guaranteed. Actual future results may vary materially.

         We  undertake  no  obligation  to publicly  update any  forward-looking
statements,  whether  as  the  result  of new  information,  future  events,  or
otherwise. You are advised,  however, to consult any further disclosures we make
on related subjects in our 10-QSB, 8-K, and 10-KSB reports to the SEC. Also note
that we have provided the above cautionary  discussion of risks,  uncertainties,
and possibly inaccurate assumptions relevant to our business.  These are factors
that we think could cause our actual results to differ  materially from expected
and  historical  results.  Other  factors  besides those listed above could also
adversely  affect the Company.  This  discussion is provided as permitted by the
Private Securities Litigation Reform Act of 1995.


                       WHERE YOU CAN FIND MORE INFORMATION

         This prospectus is part of a Registration Statement on Form S-3 that we
filed  with  the  Commission.  This  prospectus  does  not  contain  all  of the
information in the Registration  Statement.  The Registration Statement contains
more information than this prospectus regarding SI Diamond and its common stock,
including  exhibits  and  schedules.  You  can  get a copy  of the  Registration
Statement from the SEC at the address below or from its internet site.

         We file annual,  quarterly and current  reports,  proxy  statements and
other information with the SEC. You may read and copy the documents we file with
the SEC at the SEC's public reference room at 450 Fifth Street,  N.A., Judiciary
Plaza,  Washington,  D.C. 20549 and at the Regional Offices of the Commission at
the Northwestern  Atrium Center, 500 West Madison Street,  Suite 1400,  Chicago,
Illinois  60606-2511 and Seven World Trade Center, New York, New York 10048. You
should call  1-800-SEC-0330  for more  information on the public reference room.
You can request copies of these  documents upon payment of a duplicating  fee by
writing to the SEC at the public  reference  section at 450 Fifth Street,  N.W.,
Washington,  D.C. 20549.  The Commission also maintains a Web site that contains
information regarding registrants at http:\\www.sec.gov.

         SI Diamond's  common stock is included in the OTC Bulletin  Board under
the  symbol  "SIDT".   Reports,  proxy  and  information  statements  and  other
information  concerning the Company can be inspected at the National Association
of Securities Dealers, Inc., 1735 K Street, 3rd Floor, Washington, D.C. 20006 or
obtained  by calling  the  Nasdaq  Public  Reference  Room  Disclosure  Group at
1-800-638-8241.



                                       13
<PAGE>


                       DOCUMENTS INCORPORATED BY REFERENCE

         The  Commission  allows  us  to  "incorporate"   into  this  prospectus
information  we file with the Commission in other  documents.  This means we can
disclose  important  information to you by referring to other documents which we
have filed and contain that  information.  The following  documents,  which have
been filed by SI Diamond with the Commission  pursuant to the Exchange Act (File
No.  1-11602),  are  incorporated  by reference in this  prospectus and shall be
deemed to be a part hereof:

         (1)      SI Diamond's  Annual Report on Form 10-KSB for the fiscal year
                  ended December 31, 1999;

         (2)      SI Diamond's Quarterly Report on Form 10-QSB for the quarterly
                  period ended March 31, 2000;

         (3)      SI  Diamond's  Current  Report on Form 8-K dated as of January
                  21, 2000;

         (4)      SI Diamond's  Current Report on Form 8-K dated as of April 28,
                  2000; and

         (5)      The  description  of  SI  Diamond's   common  stock  which  is
                  contained in its  Registration  Statement on Form 8-A filed on
                  November  19, 1992,  pursuant to Section 12 of the  Securities
                  Exchange Act of 1934,  including any amendment or report filed
                  for the purpose of updating such description.

         We incorporate  by reference all future  documents we may file with the
Commission under Sections 13(a),  13(c), 14 or 15(d) of the Securities  Exchange
Act of 1934 until we terminate  the offering of these  shares.  The  information
that we incorporate by reference may include  documents  filed after the date of
this  Prospectus  which update and  supersede the  information  you read in this
Prospectus.

         You may request a copy of the documents incorporated by reference at no
cost. Requests for copies should be directed in writing or by telephone to:

                           SI Diamond Technology, Inc.
                       3006 Longhorn Boulevard, Suite 107
                               Austin, Texas 78758
                         Attention: Corporate Secretary
                           (Telephone: (512) 339-5020)


                                       14
<PAGE>

                                 USE OF PROCEEDS

         The selling  shareholders will receive all of the net proceeds from the
sale of the shares of SI Diamond common stock sold. Pursuant to this prospectus,
SI Diamond will not receive any of the  proceeds  from the sale of the shares by
the selling shareholders. SI Diamond will receive the proceeds from the exercise
of the warrants,  which proceeds will be used for working capital. SI Diamond is
unable to predict how much it will  receive  from its  exercise of the  warrants
held by the Vision Mark  Selling  Shareholder  since the price of such  warrants
shall be established,  if at all, upon the achievement of certain  milestones by
C&A Services,  L.L.C. See "Plan of Distribution and Selling Shareholder - Vision
Mark Selling  Shareholder." The exercise prices of all other warrants range from
$1.00 to $2.15 per share of SI  Diamond's  common  stock.  It is  unlikely  that
significant amounts of the warrants will be exercised until the trading price of
the common stock exceeds the exercise price of the warrants, if at all.

                  PLAN OF DISTRIBUTION AND SELLING SHAREHOLDERS

General
-------

         SI  Diamond  is  registering  the  shares  on  behalf  of  the  Selling
Shareholders.  As  used  herein,  "Selling  Shareholders"  includes  donees  and
pledgees selling shares received from a named Selling Shareholder after the date
of this Prospectus.  The Selling Shareholders hold shares of SI Diamond's common
stock which are (1)  currently  "restricted  securities",  or (2) issuable  upon
exercise of certain  outstanding  warrants to  purchase  shares of SI  Diamond's
common stock.  All costs,  expenses and fees in connection with the registration
of the shares offered hereby will be borne by SI Diamond.  Brokerage commissions
and similar selling expenses, if any, attributable to the sale of shares will be
borne by the Selling Shareholders.

         Sales of shares may be  effected by Selling  Shareholders  from time to
time in one or more types of transactions (which may include block transactions)
on the OTC  Bulletin  Board or any stock  exchange  on which the  shares  may be
listed in the future pursuant to and in accordance with the applicable  rules of
such  exchange,  in  negotiated  transactions,   through  put  or  call  options
transactions  relating  to the  shares,  through  short  sales of  shares,  or a
combination of such methods of sale, at market prices  prevailing at the time of
sale, or at negotiated prices.  Such transactions may or may not involve brokers
or dealers or  underwriters.  The Selling  Shareholders  have advised SI Diamond
that they have not entered into any agreements,  understandings  or arrangements
with any underwriters or broker-dealers  regarding the sale of their securities,
nor is there an underwriter or coordinating broker acting in connection with the
proposed sale of shares by the Selling Shareholders.

         The Selling Shareholders may effect such transactions by selling shares
directly to purchasers or to or through broker-dealers,  which may act as agents
or  principals.  Such  broker-dealers  may receive  compensation  in the form of
discounts,  concessions, or commissions from the Selling Shareholders and/or the
purchasers of shares for whom such  broker-dealers  may act as agents or to whom
they  sell  as  principal,  or  both  (which  compensation  as  to a  particular
broker-dealer might be in excess of customary commissions).

         The Selling  Shareholders and any broker-dealers that act in connection
with the sale of shares might be deemed to be "underwriters"  within the meaning
of Section 2(11) of the  Securities  Act, and any  commissions  received by such
broker-dealers  and any profit on the  resale of the  shares  sold by them while
acting as principals might be deemed to be underwriting discounts or commissions
under the  Securities  Act.  SI Diamond  has agreed to  indemnify  each  Selling
Shareholder against certain liabilities, including liabilities arising under the
Securities  Act.  The Selling  Shareholders  may agree to  indemnify  any agent,
dealer or broker-dealer that participates in transactions involving sales of the
shares against  certain  liabilities,  including  liabilities  arising under the
Securities Act.

                                       15
<PAGE>

         Because Selling Shareholders may be deemed to be "underwriters"  within
the meaning of Section  2(11) of the  Securities  Act, the Selling  Shareholders
will be subject to the prospectus  delivery  requirements of the Securities Act.
Resales  and  reoffers of the shares by the  Selling  Shareholders  must also be
accompanied  by  the  delivery  of a  copy  of  the  prospectus.  Copies  of the
prospectus shall be delivered to each Selling Shareholder after the Registration
Statement,  of which this  prospectus is a part, is declared  effective.  To the
extent  required by applicable law, the specific shares to be sold, the names of
the Selling  Shareholders,  the respective  purchase  prices and public offering
prices,  the names of any  agent,  dealer  or  underwriter,  and any  applicable
commissions or discounts with respect to a particular offer will be set forth in
the accompanying prospectus.  Each Selling Shareholder shall also be informed of
the  anti-manipulative  rules under  Regulation  M  promulgated  pursuant to the
Exchange Act.

         Selling  Shareholders also may resell all or a portion of the shares in
open market  transactions  in reliance upon Rule 144 under the  Securities  Act,
provided  they meet the criteria and conform to the  requirements  of such Rule.
They may also pledge shares as collateral for margin accounts,  which shares can
be resold pursuant to the terms of such accounts.

         There can be no assurance that the Selling  Shareholders  will sell any
or all of the shares  offered by them in this  prospectus.  SI Diamond has filed
the  Registration  Statement,  of which this prospectus  forms a part, to comply
with the exercise by certain Selling  Shareholders of demand registration rights
granted to such Selling  Shareholders,  and to comply with  certain  "piggyback"
registration rights granted to other Selling Shareholders.



                                       16
<PAGE>

         Upon SI  Diamond  being  notified  by a  Selling  Shareholder  that any
material  arrangement has been entered into with a broker-dealer for the sale of
shares  through  a block  trade,  special  offering,  exchange  distribution  or
secondary distribution or a purchase by a broker or dealer, a supplement to this
prospectus  will be filed,  if required,  pursuant to Rule 424(b) under the Act,
disclosing  (i)  the  name  of  each  such  Selling   Shareholder   and  of  the
participating  broker-dealer(s),  (ii) the number of shares involved,  (iii) the
price at which such shares were sold, (iv) the commissions  paid or discounts or
concessions allowed to such  broker-dealer(s),  where applicable,  (v) that such
broker-dealer(s) did not conduct any investigation to verify the information set
out or  incorporated  by  reference  in this  prospectus  and (vi)  other  facts
material to the  transaction.  In addition,  upon SI Diamond being notified by a
Selling  Shareholder  that a donee or  pledgee  intends  to sell  more  than 500
shares, a supplement to this Prospectus will be filed.

1996 Note Warrant Selling Shareholders
--------------------------------------

         On October 31, 1996,  Diamond Tech One,  Inc.  ("DTO"),  a wholly owned
subsidiary  of  the  Company,  borrowed  a  total  of  $1,000,000  from  private
individuals and entities.  All of the promissory  notes made payable to the Note
Warrant  Selling  Shareholders  were guaranteed by SI Diamond.  In addition,  we
granted  warrants to each Note Warrant  Selling  Shareholder to purchase  50,000
shares of SI  Diamond's  Common  Stock at $1.00 per share any time until June 1,
2000. These warrants were issued in an exempt  transaction under Regulation D of
the Securities Act.

         The Company  also agreed to include  these  warrants on a  registration
statement and to keep such registration statement effective until the expiration
date of the warrants. 50,000 of these warrants were extended until June 1, 2001.

Series G Selling Shareholders
-----------------------------

         In June 1997, the Series G Selling  Shareholders  received  warrants to
purchase an  aggregate of 850,000  shares of SI Diamond's  common stock at $1.00
per share. These warrants expire in August 2002. Of the warrants issued, 675,000
have been exercised and 175,000 remain outstanding.

         SI Diamond  agreed at the time of sale of the Series G preferred  stock
to register  pursuant to the  Registration  Statement the shares of common stock
issuable  upon  conversion  of the Series G preferred  stock and the  associated
warrants and to keep such  Registration  Statement  effective  for one (1) year.
Additionally,  SI  Diamond  agreed to pay all of the  expenses  incident  to the
preparation and filing of the Registration Statement (other than commissions and
discounts  of any  underwriters,  dealers or agents).  SI Diamond also agreed to
indemnify  the  Series G  selling  shareholders  and any  underwriters  they may
utilize against certain civil liabilities,  including  liabilities arising under
the Securities  Act. In addition,  each Series G selling  shareholder  agreed to
indemnify SI Diamond against civil liabilities,  including liabilities under the
Securities  Act, with respect to written  information  furnished by the Series G
selling shareholders to SI Diamond.

1998 and 1999 Note Selling Shareholders
---------------------------------------

         During 1998,  SI Diamond  issued a total of $1,005,000 of notes payable
to investors that were  convertible into shares of the Company's common stock at
the  option  of the  lenders,  primarily  at a rate of $0.25  per  share,  which
approximated  the market  price at the time the loans  were  made.  All of these
notes have been converted into SI Diamond common stock.

                                       17
<PAGE>

         In January and February  1999, SI Diamond  borrowed a total of $200,000
from a shareholder for working capital  purposes.  These  short-term  loans bore
interest at a rate of 15%,  were  secured by all assets of SI Diamond,  and were
convertible  into its  common  stock at rates  ranging  from  $0.30 to $0.40 per
share.  These  conversion  rates  approximated  the market price of SI Diamond's
common stock at the times the loans were  arranged.  These notes were  converted
into shares of SI Diamond's common stock in February 1999.

October 1998 Warrant Selling Shareholder
----------------------------------------

         In 1998, SI Diamond issued  $100,000 of 90-day notes which were payable
at a rate of 15% and  secured  by all  assets of SI  Diamond.  These  notes were
accompanied by warrants enabling the holders of these 90-day notes to purchase a
total of 400,000 shares of SI Diamond's  common stock at $0.25 per share,  which
approximated the market price of the common stock at the time of the loans.

Vision Mark Selling Shareholder
-------------------------------

         On November 11, 1998, Electronic Billboard Technology,  Inc. ("EBT"), a
wholly-owned  subsidiary of SI Diamond  entered into a Marketing Agent Agreement
with Vision Mark,  L.L.C., a Texas limited  liability  company.  Pursuant to the
marketing  agreement,  EBT  appointed  Vision Mark as a  nonexclusive  marketing
representative.  In connection with the marketing agreement,  SI Diamond entered
into  a  Consulting  and  Advisory  Services  Compensation  Agreement  with  C&A
Services,  L.L.C.  ("C&A").  SI  Diamond  also  agreed  that at such time as EBT
entered into a letter of intent for the installation of certain of its operating
systems  resulting  from Vision Mark's  representation  of EBT, SI Diamond would
issue  C&A  300,000  shares  of its  common  stock.  EBT  entered  into  such an
arrangement  with Eckerd  Corporation in January 2000.  Accordingly,  SI Diamond
issued 300,000 shares of its common stock to C&A consulting in February 2000.

         SI Diamond also issued  warrants to purchase SI Diamond common stock to
C&A, which are  exercisable  upon the  achievement of certain goals as described
below:

         (1) Once EBT has  received  revenue from  arrangements  pursuant to the
Marketing  Agent  Agreement  in the  aggregate  of  $10,000,000,  and  for  each
successive and cumulative  $10,000,000 increment of revenue achieved pursuant to
the  Marketing  Agent  Agreement,  C&A may  exercise  warrants to purchase up to
250,000  shares of SI Diamond  common stock at a purchase  price equal to 50% of
the average  closing price of SI Diamond  common stock on the five business days
next  preceding the date of the  achievement  of each  $10,000,000  increment in
revenue from the Marketing Agent Agreement.

         (2) Within 60 days following  each annual  anniversary of the Marketing
Agent Agreement,  if the aggregate revenue from such agreement is at least equal
to $10,000,000 for each such annual period,  C&A shall have the additional right
thereafter to exercise  warrants to purchase  shares of SI Diamond  common stock
with  respect  to each such  annual  determination.  If the  amount  of  revenue
received  pursuant to the  Marketing  Agent  Agreement is equal to, but not less
than 25% of, the  aggregate  revenue of SI Diamond for each such annual  period,
C&A may exercise  warrants to purchase up to 100,000 shares of SI Diamond common
stock at a  purchase  price  equal  to 75% of the  average  closing  price of SI
Diamond  common stock on the five business days next preceding the last business
day of each  such  annual  period.  For each  additional  1% above  25% that the
revenue  received  pursuant to the Marketing Agent Agreement  contributed to the
aggregate SI Diamond  annual  revenue for such annual  period,  C&A may exercise
warrants to purchase up to 100,000 such  additional  shares of SI Diamond common
stock,  in  incremental  amounts of 4,000 shares of SI Diamond common stock each
for each such  additional  1% of  revenue  that the  Marketing  Agent  Agreement
contributed to the aggregate revenue of SI Diamond for such annual period. These
warrants may be exercised at a purchase price equal to the average closing price
of SI Diamond  common stock on the five  business  days next  preceding the last
business day of such annual  period,  less a percentage  equal to the sum of 25%
plus an additional 1% for each  additional 1% over and above 25% (not to exceed,
in the aggregate, 50%) that the revenue achieved pursuant to the Marketing Agent
Agreement  contributed  to the  aggregate  SI Diamond  revenue  for such  annual
period.


                                       18
<PAGE>

         (3) SI Diamond  also issued  warrants to C&A to purchase an  additional
2,300,000 shares of SI Diamond's common stock upon the receipt by EBT of each of
$100,000,000  and  $200,000,000,  respectively,  of cumulative  revenue from the
Marketing  Agent  Agreement  (for a maximum of 4,600,000  shares).  The purchase
price for the  shares  subject  to these  warrants  shall be equal to 50% of the
average  closing price on the five business days next  preceding the date on the
achievement of each of $100,000,000 and $200,000,000 of such cumulative  revenue
by EBT.

         Notwithstanding  anything  contained  in the  Consulting  and  Advisory
Services Compensation Agreement, the number of shares of SI Diamond common stock
received by C&A shall not exceed  10,000,000  shares,  subject to  adjustment in
certain circumstances.

Sign Builders Selling Shareholders
----------------------------------

         On  September  3,  1999,  SI  Diamond  entered  into an Asset  Purchase
Agreement by and among  itself;  SIDT,  Inc.,  one of its indirect  wholly-owned
subsidiaries;  Sign Builders of America, Inc. ("SBOA"); and Sign Builders, Inc.,
a subsidiary of SBOA. In the Asset Purchase Agreement, SIDT, Inc., purchased the
assets subject to such agreement. In return SIDT, Inc., paid $150,000 in cash to
Sign Builders and $300,000 in cash to Lance Adams, the sole shareholder of SBOA.
SIDT,  Inc.  also  executed a promissory  note,  guaranteed  by SI Diamond,  for
$450,000  payable to SBOA.  $225,000 in principal of this note, plus accrued and
unpaid  interest,  was payable on March 3, 2000,  and the remaining  $225,000 in
principal of this note, plus accrued and unpaid interest,  is due and payable on
September 3, 2000. At SBOA's election, on each loan payment date it may convert,
in whole or in part,  principal  and accrued  interest of the note at $2.127 per
share.  However, if the combined gross sales of SBOA and SIDT, Inc. for the 1999
calendar year does not exceed $3,000,000, then the note will be reduced $1.00 in
principal  amount for each $2.00 that the actual  gross  sales of SBOA and SIDT,
Inc. fall below $3,000,000.00.

         SI Diamond also issued a total of 423,132 shares of its common stock to
SBOA and Mr. Adams in its transaction.  As part of the Asset Purchase Agreement,
SI Diamond  agreed to register  these  shares on a  registration  statement.  SI
Diamond agreed to keep the registration  statement  effective until September 3,
2000

         The note payable in the amount of $450,000  described above was reduced
to $250,000 as a result of the sales price  adjustment also described above. The
noteholder  elected to receive the principal payment of $125,000 and the related
accrued  interest  due March 3, 2000 in  shares  of common  stock.  Accordingly,
62,374  shares of SI Diamond  common  stock were issued in payment of this note.
These  shares  are  registered  on this  registration  statement.


                                       19
<PAGE>

 2000 Private Placements
 -----------------------

         From January through May 2000, in a series of four  transactions with a
shareholder,  SI  Diamond  issued a total of 700,000  shares of common  stock in
exchange for a total of $1,000,000.

         In February  2000, SI Diamond  issued a total of 200,000  shares of its
restricted  common  stock to Nomura  Holdings,  Ltd. in exchange for Nomura's 5%
ownership in SI Diamond's FEPET subsidiary.

         In May 2000, SI Diamond  agreed to issue  250,000  shares of its common
stock to an individual  in exchange for an exclusive  world wide license to this
individual's patents.

Other Selling Shareholders
--------------------------

         SI Diamond  has agreed to give the  shareholders  listed  herein as the
Other Selling  Shareholders  "piggyback"  registration  rights  regarding shares
underlying certain warrants and shares held by these holders.  Pursuant to these
"piggyback" rights, SI Diamond agreed to use its best efforts to have the common
stock and the common stock issuable upon the exercise of these warrants included
in the Registration Statement, of which this prospectus is a part.

Selling Shareholders
--------------------

         This  prospectus  covers  offers of the shares of common stock owned by
the Selling  Shareholders.  The  following  table lists the names of the selling
shareholders  as well as (1) the number of shares of common  stock,  and (2) the
number of shares of common stock underlying existing warrants held as of June 6,
2000.  Because  SI  Diamond  does not know  how many  shares  may be sold by the
selling shareholders pursuant to this prospectus, no estimate can be given as to
the  number of the shares  that will be held by the  selling  shareholders  upon
termination of this offering.

                                       20
<PAGE>

                           SELLING SHAREHOLDERS TABLE

<TABLE>
<CAPTION>
                                     Number of Shares    Number of Shares
                                         of Common           of Common
                                      Stock Held and     Stock Underlying    Percentage of Interests
                                     Offered Pursuant    Warrants Offered       Prior to Any Sales
                                          to This        Pursuant to This     Made Pursuant to This
            Shareholder                 Prospectus          Prospectus           Prospectus<F1>
            -----------                 ----------          ----------           -------------

<S>                                        <C>                <C>         <C>             <C>
1996 NOTE  WARRANT SELLING SHAREHOLDERS
Pinnacle Fund, L.P......................    50,000                                        <F2>
Valassis Enterprises, Inc...............                         50,000                    *

SERIES G SELLING SHAREHOLDERS
James G. Petroff........................                         25,000                    *
Mark S. Wagner..........................                         25,000                    *
Chris S. Lawson.........................                         25,000                    *
George Valassis.........................                        100,000                    *

1998 AND 1999 NOTE SELLING SHAREHOLDERS
Pinnacle Fund, L.P. .................... 1,221,021                                        <F2>
R.J. Berman.............................   202,792                                         *
Bill Clement............................   202,507                                         *
Michael Denton, Jr......................   305,014                                         *
MSB Family Trust........................   830,904                                        <F3>
Gilbert Kitt............................   210,000                                         *
Nick Martin Co..........................   207,808                                         *
Nicholas Martin Living Trust............   207,808                                         *
Dan Cafolla Profit Sharing Plan.........   105,301                                         *
Tom Hickey..............................   389,795                                         *


OCTOBER 1998 WARRANT SELLING
SHAREHOLDER
Johnathon Drake.........................    27,000                                         *

VISION MARK SELLING
SHAREHOLDER
C&A Services, LLC.......................   200,000            9,700,000 <F4>              15.00%
Bill Clement............................   100,000                                         *
</TABLE>


                                       21
<PAGE>
<TABLE>
<CAPTION>


                                     Number of Shares    Number of Shares
                                         of Common           of Common
                                      Stock Held and     Stock Underlying     Percentage of Interests
                                     Offered Pursuant    Warrants Offered       Prior to Any Sales
                                          to This        Pursuant to This      Made Pursuant to This
            Shareholder                 Prospectus          Prospectus            Prospectus<F1>
            -----------                 ----------          ----------            -------------

<S>                                      <C>                 <C>                          <C>
SIGN BUILDERS SELLING
SHAREHOLDERS

Sign Builders of America, Inc...........   131,668                                         *
Lance Adams.............................   300,919                                         *
Mike Benaglio...........................     3,265                                         *

2000 PRIVATE PLACEMENTS

MSB Family Trust........................   700,000                                        <F3>
Nomura Trading Company, Ltd.............   200,000                                         *
Teel Keesmann...........................   250,000                                         *

OTHER SELLING SHAREHOLDERS
Katherine D. Banks......................     5,000               80,000                    *
James N. Perkins........................                         20,000                    *
H. Scott Phillips.......................                         20,000                    *
John E. Palmer..........................                          7,500                    *
H. Marcia Smolens.......................                          7,500                    *
Pinnacle Fund, L.P......................   388,979                                        <F2>
Sam Chawkin.............................    48,500                                         *
SFT Consulting..........................                         20,000                    *

    TOTAL............................... 7,390,038           10,080,000                   26.41%
                                        ==========          ===========              ===========

--------------------
*      Less than 1%
<FN>

<F1>     This  percentage  was  calculated  including  shares  issuable upon the
         exercise of warrants into shares of the Company's Common Stock.
<F2>     All  combined,   Pinnacle  Fund,  L.P.  owns  1,660,000  shares,  which
         represents 3.11% of the Company's outstanding Common Stock.
<F3>     All combined, MSB Family Trust owns 1,530,904 shares, which represents
         2.70% of the Company's outstanding Common Stock.
<F4>     These  warrants  shall  only  be  exercisable,  if  at  all,  upon  the
         achievement of certain milestones  resulting from the representation of
         SI Diamond by Vision Mark.
</FN>
</TABLE>


                                       22
<PAGE>


                          DESCRIPTION OF CAPITAL STOCK

         The  authorized  capital  stock of SI Diamond  consists of  120,000,000
shares of common  stock,  par value  $.001 per share,  and  2,000,000  shares of
preferred  stock,  par value $1 per share.  The preferred stock may be issued in
series and  currently  consists  of the Series G preferred  stock,  of which 900
shares are issued and outstanding.

         After giving effect to the conversion of all 10,080,000  warrants which
are subject to the prospectus,  there would be 66,711,840 shares of common stock
issued and  outstanding.  Shares of common stock are reserved for issuance  upon
exercise of 6,288,271  additional  shares are  reserved  for  issuance  under SI
Diamond's  stock option plans and 1,161,069  additional  shares are reserved for
issuance upon the conversion of the Series G preferred stock.

Common stock
------------

         The holders of common stock are entitled to one vote per share,  voting
with the holders of any other class of stock entitled to vote, without regard to
class, on all matters to be voted on by the shareholders, including the election
of directors.  All issued and outstanding  shares of common stock are fully paid
and  nonassessable.  The common  stock is  currently  listed on the OTC Bulletin
Board.

         Subject to any prior and superior  rights of the preferred  stock,  the
holders of common stock are entitled to receive dividends when, and if, declared
by the Board of Directors from funds legally available.  Currently, no series of
preferred  stock has rights that are prior and superior to the common stock with
respect to dividends.

         In the  event of any  liquidation,  dissolution  or  winding  up of the
affairs of SI Diamond,  the holders of the common stock are entitled to receive,
pro rata,  any assets of the company  remaining  after  payment has been made in
full  to the  holders  of any  series  of  preferred  stock  with a  liquidation
preference.  Currently,  only the  holders of the Series G  preferred  stock are
entitled to a liquidation preference.

Preferred stock
---------------

         The  preferred  stock  may be  issued  from time to time in one or more
series as may be established  and  designated  from time to time by the Board of
Directors  by  resolution.   The  voting  powers,   preferences   and  relative,
participating,  optional  and  other  special  rights  and  the  qualifications,
limitations or  restrictions of any series of preferred stock shall be as stated
in the resolution or resolutions of the Board of Directors that provides for the
designation of such series.  With the exception of shares issued pursuant to any
duly adopted stock option plan of SI Diamond,  no shares of preferred  stock may
be issued to any  officer  or  director  of SI Diamond  or any  shareholder  who
directly or  indirectly  owns  greater  than five percent (5%) of the issued and
outstanding voting stock of SI Diamond or any affiliate of such persons, without
the   affirmative   vote  of  a  majority  in  interest  of  the   disinterested
shareholders. Under the Texas Business Corporation Act, each series of preferred
stock is entitled to vote as a class with respect to a proposed  amendment to SI
Diamond's  Restated  Articles of Incorporation in certain  circumstances.  As of
June 6, 2000, the only preferred stock of SI Diamond  outstanding was its Series
G preferred stock.


                                       23
<PAGE>

Series G Preferred Stock

         There are 3,000 shares of Series G preferred stock currently authorized
for  issuance,  of which 900  shares  are  issued  and  outstanding.  Subject to
adjustment in certain  circumstances,  each share of Series G preferred stock is
convertible  into that number of shares of common stock  determined  by dividing
the original issue price of the Series G preferred  stock,  plus an amount equal
to ten percent (10%) of the issue price per annum, by $1.00.

         Except as  provided by law,  the  holders of Series G  preferred  stock
shall be  entitled  to a number of votes equal to the number of shares of common
stock into which their  respective  shares of Series G preferred  stock are then
convertible  on the  record  date for the  taking of such vote of  shareholders.
Holders  of  Series  G  preferred  stock  shall be  entitled  to  notice  of all
shareholders  meetings or written  consents  with respect to which they would be
entitled to vote.

         In the  event  of any  liquidation,  dissolution  or  winding-up  of SI
Diamond, either voluntary or involuntary,  the holders of shares of the Series G
preferred stock then issued and outstanding  shall be entitled to be paid out of
the assets of SI Diamond available for distribution to its shareholders, whether
from  capital,  surplus or  earnings,  before any  payment  shall be made to the
holders of shares of the common  stock,  an amount per share equal to the sum of
(i) the stated value and (ii) an amount equal to ten percent (10%) of the stated
value  multiplied  by the  fraction  N/365,  where N equals  the  number of days
elapsed  since the issue  date of the Series G  preferred  stock.  If,  upon any
liquidation  of SI  Diamond,  the assets  available  for  distribution  shall be
insufficient  to pay the holders of shares of the Series G  preferred  stock and
the holders of any other series of preferred stock with a liquidation preference
equal to the  liquidation  preference  of the Series G preferred  stock the full
amounts to which they shall  respectively be entitled,  the holders of shares of
the Series G preferred  stock and the holders of any other  series of  preferred
stock with  liquidation  preference  equal to the liquidation  preference of the
Series G preferred stock shall receive all of the assets of SI Diamond available
for  distribution and each such holder of shares of the Series G preferred stock
and the  holders  of any other  series of  preferred  stock  with a  liquidation
preference  equal to the liquidation  preference of the Series G preferred stock
shall share ratably in any  distribution in accordance with the amounts due such
shareholders. After payment shall have been made to the holders of shares of the
Series G preferred stock of the full amount to which they shall be entitled,  as
aforesaid,  the  holders  of shares of the  Series G  preferred  stock  shall be
entitled  to no further  distributions  thereon and the holders of shares of the
common stock and of shares of any other  series of stock of SI Diamond  shall be
entitled to share, according to their respective rights and preferences,  in all
remaining assets of SI Diamond available for distribution to its shareholders.

Shares Eligible for Future Sale
-------------------------------

         As of June 6,  2000,  there  were  56,631,840  shares of  common  stock
outstanding,  of which  49,286,505  shares of common stock were freely  tradable
without restriction or further  registration under the Securities Act by persons
other than "affiliates" of the Company. As of that date, the remaining shares of
common stock were deemed  "restricted  securities," as defined in Rule 144 under
the Securities Act, and may not be resold in the absence of  registration  under
the Securities Act or pursuant to an exemption from such registration, including
exemptions  provided  by Rule 144  under the  Securities  Act.  Under  Rule 144,
persons  who have held  securities  for a period of at least one year may sell a
limited amount of such securities without registration under the Securities Act.
Rule  144  also  permits,  under  certain  circumstances,  persons  who  are not


                                       24
<PAGE>

affiliates of SI Diamond,  to sell their restricted  securities without quantity
limitations once they have completed a two-year holding period.

The Registration Statement, of which this prospectus is a part, pertains to

         o        6,288,271   shares  of  common   stock  which  are   currently
                  "restricted securities"; and

         o        10,080,000  shares of common  stock  which  underlie  existing
                  warrants.

We are obligated to maintain the effectiveness of the Registration Statement for
varying periods of time,  pursuant to separate agreements with certain groups of
the selling shareholders.

         In addition to the shares of common stock which are  outstanding  as of
June 6, 2000,  7,463,926  shares of common stock have been reserved for issuance
pursuant to SI  Diamond's  stock  option  plans and  1,161,069  shares have been
reserved  for  issuance  upon the  conversion  of the Series G preferred  stock.
10,080,000  shares of common stock have also been  reserved  for  issuance  upon
exercise  of  warrants  that have been  issued by SI  Diamond  (all of which are
subject to this prospectus).

         No prediction can be made as to the effect,  if any, that future sales,
or the availability of shares of common stock for future sales, will have on the
market  price  prevailing  from time to time.  Sales of  substantial  amounts of
common stock by SI Diamond or by shareholders who hold "restricted  securities,"
or the perception that such sales may occur,  could adversely affect  prevailing
market prices for the common stock.

Transfer Agent and Registrar
----------------------------

         The  transfer  agent and  registrar  for the common  stock is  American
Securities  Transfer,  Incorporated,  12039  West  Alameda  Parkway,  Suite Z-2,
Lakewood, Colorado 80228.

Certain Provisions of the Articles of Incorporation, Bylaws and Texas Law
-------------------------------------------------------------------------

         SI Diamond's Restated Articles currently contain provisions which could
be considered to have anti-takeover effects.  First, the authorized and unissued
shares  of SI  Diamond's  preferred  stock  and  common  stock  could be used by
incumbent management to make more difficult and thereby discourage an attempt to
acquire control of SI Diamond,  even though some  shareholders  may deem such an
acquisition  desirable.  For example, the shares of unissued preferred stock and
unissued  common  stock  could be  privately  placed with  purchasers  who might
support the Board of Directors in opposing a hostile  takeover bid. The issuance
of the unissued  preferred  stock with voting rights and/or the unissued  common
stock  could also be used to dilute the stock  ownership  and voting  power of a
third party seeking to remove directors, replace incumbent directors, accomplish
certain  business  combinations,  or alter,  amend, or replace  provisions in SI
Diamond's Restated Articles. To the extent that it impedes any such attempt, the
unissued  preferred  stock and  unissued  common  stock may serve to  perpetuate
current   management.   From  time  to  time,  SI  Diamond  evaluates  potential
transactions and acquisitions, which if consummated, may require the issuance of
the unissued preferred stock or unissued common stock.


                                       25
<PAGE>

         SI Diamond's  Restated Articles require a classified Board of Directors
pursuant to which only one-third (1/3) of the Board of Directors is elected each
year for a term of three years. Therefore,  even when a shareholder,  or a group
of shareholders, has sufficient voting power to elect all of the directors to be
elected  every  year,  SI  Diamond's  classified  Board could have the effect of
requiring two successive  annual  meetings to replace a majority of the Board of
Directors  and three annual  meetings to replace the entire Board of  Directors.
There is no cumulative voting with respect to the election of directors.

         SI Diamond's  Restated  Articles also contain a provision  which states
that with the sole exception of shares issued pursuant to the duly adopted stock
option plans, no shares of SI Diamond's  preferred stock shall be issued or sold
to any officer or director of SI Diamond,  or any  shareholder  who  directly or
indirectly owns more than five percent (5%) of the issued and outstanding voting
stock of SI Diamond, or any affiliate of such a person,  without the affirmative
vote of a majority in interest of the disinterested shareholders of SI Diamond.

         SI Diamond  shall not be obligated  to deliver  notices or offer voting
stock  for sale  pursuant  to  these  provisions  in  respect  of the  following
issuances of voting  stock:  (a) pursuant to  employee,  director or  consultant
stock option, purchase, bonus, exchange or other such plans or upon the exercise
of  options or other  rights  granted  thereunder,  and (b) in  connection  with
transactions in which shares of voting stock are issued to security holders of a
company being acquired by SI Diamond or to a company some or all of whose assets
are being acquired by SI Diamond.

         The Restated Articles limit the liability of directors of SI Diamond in
their capacity as directors.  Specifically, the directors of SI Diamond will not
be liable to SI Diamond or its  shareholders  for monetary damages for an act or
omission in a director's  capacity as a director,  except for  liability for the
following:

         o        for any breach of the director's duty of loyalty to SI Diamond
                  or its shareholders,

         o        for any act or omission not in good faith which  constitutes a
                  breach  of  duty  of the  director  to SI  Diamond  or acts or
                  omissions  which involve  intentional  misconduct or a knowing
                  violation of the law,

         o        for  transactions  from which a director  received an improper
                  benefit,  whether or not the benefit  resulted  from an action
                  taken within the scope of the director's office,

         o        for an act or omission  for which the  liability of a director
                  is expressly provided for by an applicable statute, or

         o        for acts related to an unlawful stock repurchase or payment of
                  a dividend.



                                       26
<PAGE>

         The overall effect of the provisions in SI Diamond's  current  Restated
Articles described above would be to make more difficult or discourage a merger,
tender, offer or proxy contest, even if such transaction or occurrence generally
is  favorable  to the  interests  of the  shareholders,  or they  may  delay  or
frustrate the assumption of control by a holder of a large block of SI Diamond's
securities and the removal of incumbent management,  even if such removal may be
beneficial to the shareholders.


                                     EXPERTS

         The  consolidated  balance  sheets as of December 31, 1999 and 1998 and
the consolidated  statements of operations,  stockholders'  equity (deficit) and
cash  flows  for  the  years  then  ended,  incorporated  by  reference  in this
prospectus,  have been  incorporated  herein in reliance  on the  report,  which
includes an explanatory  paragraph regarding SI Diamond's ability to continue as
a going concern, of WallaceSanders & Company, independent accountants,  given on
the authority of that firm as experts in accounting and auditing.

                                 LEGAL OPINIONS

         Certain  legal  matters in  connection  with the common  stock  offered
hereby have been passed upon for the Company by Kilpatrick Stockton LLP.



                                       27
<PAGE>


<TABLE>
<CAPTION>

===================================================================================================================
<S>                                                                         <C>
                                                                                     SI DIAMOND
                                                                                     TECHNOLOGY,
                                                                                        INC.


You should rely only on the information                                          [LOGO APPEARS HERE]
contained in this  prospectus.  We have not
authorized  anyone to give you information                                       6,288,271 Shares of
different from that contained in this                                               Common Stock
prospectus.  The selling  shareholders are                                   (Par Value $.001 Per Share)
offering to sell,  and seeking offers to buy,
shares of SI Diamond  common stock only in                                      10,080,000 Shares of
jurisdictions  where offers and sales are                                           Common Stock
permitted.  The information contained in this                                    Underlying Warrants
prospectus is accurate only as of the date of
this  prospectus,  regardless of the time of the
delivery of this prospectus or of any sale of the                                    ----------
shares.
                                                                                     PROSPECTUS
                                                                                     ----------

                  -------------------                                               June __, 2000

                   Table of Contents
                                                 Page
                                                 ----

Risk factors.......................................4
Where you can find more information...............13
Documents incorporated by reference...............14
Use of proceeds...................................15
Plan of distribution and selling shareholders.....15
Selling Shareholders table........................21
Description of capital stock......................23
Experts...........................................27
Legal Opinions....................................27


===================================================================================================================
</TABLE>


                                       28
<PAGE>
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.     Other Expenses of Issuance and Distribution

         The  estimated  fees and  expenses  payable  in  connection  with  this
offering, all of which are payable by SI Diamond, are as follows:
<TABLE>
<CAPTION>
<S>                                                                                           <C>
         Securities and Exchange Commission registration fee..................................$   544.87
         Printing and engraving expenses......................................................$ 2,000.00
         Legal fees and expenses..............................................................$ 3,000.00
         Accounting fees and expenses.........................................................$ 3,000.00
         Miscellaneous .......................................................................$ 2,000.00
                                                                                              ----------
               Total..........................................................................$10,544.87
                                                                                              ==========
</TABLE>

Item 15. Indemnification of Directors and Officers

         Article 2.02A(16) and Article 2.01-1 of the Texas Business  Corporation
Act and Article  VIII of SI  Diamond's  Bylaws  provide it with broad powers and
authority to indemnify  its  directors and officers and to purchase and maintain
insurance for such purposes. Pursuant to such statutory and Bylaw provisions, SI
Diamond has purchased  insurance against certain costs of  indemnification  that
may  be  incurred  by  it  and  its  officers  and  directors.   See  "Item  17.
Undertakings"  for a description  of the  Securities  and Exchange  Commission's
position regarding such indemnification provisions.

         Additionally,  Article Seven(C) of the Restated Articles, provides that
a director  of SI Diamond is not liable to the company or its  shareholders  for
monetary damages for any act or omission in the director's capacity as director,
except that Article  Seven(C)  does not  eliminate  or limit the  liability of a
director for:

         o        breaches  of  his  duty  of  loyalty  to SI  Diamond  and  its
                  shareholders;

         o        acts or  omissions  not in good  faith or which  constitute  a
                  breach of duty of a director or involve intentional misconduct
                  or a knowing violation of law;

         o        transactions  from  which  a  director  receives  an  improper
                  benefit,  whether or not the benefit  resulted  from an action
                  taken within the scope of the director's office;

         o        acts or omissions for which liability is specifically provided
                  by statute; and

         o        acts  relating  to  unlawful  stock  purchases  or payments of
                  dividends.

         Article Seven(C) also provides that any subsequent  amendments to Texas
statutes that further limit the liability of directors will inure to the benefit
of the  directors,  without any further  action by  shareholders.  Any repeal or
modification  of  Article  Seven(C)  shall  not  adversely  affect  any right of
protection of a director existing at the time of the repeal or modification.

         The  foregoing  discussion  is not  intended  to be  exhaustive  and is
qualified in its entirety by each of such documents and such statutes.



                                       II-2
<PAGE>

ITem 16. Exhibits

         See Index to Exhibits on page II - 6 for a descriptive response to this
item.

ITem 17. Undertakings

         (a)      The undersigned registrant hereby undertakes:

                  (1) To file,  during any  period in which  offers or sales are
         being made, a post-effective amendment to this Registration Statement:

                       (i) To include any material  information  with respect to
               the  plan  of  distribution  not  previously   disclosed  in  the
               Registration Statement or any material change to such information
               in the Registration Statement.


                  (2) That, for the purpose of determining  any liability  under
         the Securities Act of 1933, each such post-effective amendment shall be
         deemed to be a new  registration  statement  relating to the securities
         offered therein, and the offering of such securities at that time shall
         be deemed to be the initial bona fide offering thereof.

                  (3) To remove from  registration by means of a  post-effective
         amendment any of the securities being registered which remain unsold at
         the termination of the offering.

         (b) The undersigned  registrant hereby undertakes that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

         (c)  Insofar  as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the registrant  pursuant to the foregoing  provisions,  or otherwise,
the  registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the Securities  Act of 1933 and is,  therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by the registrant of expenses incurred or paid by a director, officer or
controlling  person of the registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities being registered,  the registrant will, unless
in the  opinion  of its  counsel  the matter  has been  settled  by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification  by it is  against  public  policy  as  expressed  in  the
Securities  Act of 1933 and will be governed by the final  adjudication  of such
issue.


                                       II-3
<PAGE>

                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets the
requirements  for  filing  on Form S-3 and has  duly  caused  this  Registration
Statement to be signed on behalf of the undersigned,  thereunto duly authorized,
in the City of Austin, State of Texas, on June 12, 2000.

                                      SI DIAMOND TECHNOLOGY, INC.

                                      By    /s/ Marc W. Eller
                                        --------------------------------------
                                                Marc W. Eller
                                          Chairman and Chief Executive Officer


         KNOW  ALL MEN BY THESE  PRESENTS,  that  each  person  whose  signature
appears below constitutes and appoints Marc W. Eller and Tracy Vaught,  and each
or either of them,  his true and lawful  attorney-in-fact  and agent,  with full
power of substitution  and  resubstitution,  for him and in his name,  place and
stead,  in any and all  capacities,  to sign any and all  amendments  (including
post-effective  amendments)  to this  Registration  Statement and any subsequent
registration  statements  relating to the  offering  to which this  Registration
Statement  relates,  and to file the same,  with all exhibits  thereto and other
documents in connection therewith,  with the Securities and Exchange Commission,
granting unto said  attorneys-in-fact  and agents,  and each of them, full power
and  authority  to do and  perform  each and every act and thing  requisite  and
necessary to be done in and about the premises,  as fully and to all intents and
purposes as he might or could do in person,  hereby ratifying and confirming all
that said  attorneys-in-fact  and  agents  or  either  of them,  or their or his
substitutes or substitute, may lawfully do or cause to be done by virtue hereof.

         Pursuant  to the  Requirements  of the  Securities  Act of  1933,  This
Registration  Statement  has  Been  Signed  by  the  Following  Persons  in  the
Capacities and On the Dates Indicated.
<TABLE>
<CAPTION>

                 Signature                                       Title                               Date
                 ---------                                       -----                               ----
<S>                                            <S>                                               <C>
             /s/ Marc W. Eller                         Chairman of the Board of                  June 12, 2000
--------------------------------------------                 Directors and
               Marc W. Eller                            Chief Executive Officer
                                                     (Principal Executive Officer)

             /s/ Dr. Zvi Yaniv                               President and                       June 12, 2000
--------------------------------------------          Chief Operating Officer
Dr. Zvi Yaniv                                                 and Director

             /s/ Tracy Vaught                               Vice President,                      June 12, 2000
--------------------------------------------            Chief Financial Officer
               Tracy Vaught                   (Principal Financial and Accounting Officer)

           /s/ Ronald J. Berman                                Director                          June 12, 2000
--------------------------------------------
             Ronald J. Berman

           /s/ Philip C. Shaffer                               Director                          June 12, 2000
--------------------------------------------
             Philip C. Shaffer


                                                                II-4
<PAGE>

            /s/ David R. Sincox                                Director                          June 12, 2000
--------------------------------------------
              David R. Sincox


         /s/ Nicholas Martin, Jr.                              Director                          June 12, 2000
--------------------------------------------
           Nicholas Martin, Jr.


          /s/  Charles C. Bailey                               Director                          June 12, 2000
--------------------------------------------
             Charles C. Bailey

</TABLE>

                                                                II-5
<PAGE>


                                INDEX TO EXHIBITS

         The exhibits indicated by an asterisk (*) are incorporated by reference
from previous filings with the Commission.



 Exhibit
 Number                                 Description of Exhibit
 ------                                 ---------------------

4.1*              Form of Certificate  for shares of the Company's  common stock
                  (Exhibit 4.1 to the Company's  Registration  Statement on Form
                  SB-2 (No. 33-51466-FW) dated January 7, 1993).

4.2*              Form of warrant issued to Swartz  Investments,  Inc.  (Exhibit
                  4.5 to the  Company's  Current  Report on Form 8-K dated as of
                  January 19, 1996 (File No. 1-11602)

4.3*              Regulation D Subscription  Agreement  dated as of November 11,
                  1998, by and between the Company and C&A Services, L.L.C., for
                  the issuance of warrants to purchase shares of Common Stock of
                  the Company  (Exhibit 4.1 to the Company's  Current  Report on
                  Form 8-K dated as of December 7, 1998).

4.4*              Consulting and Advisory Services  Agreement by and between the
                  Company and C&A Services, L.L.C. dated as of November 11, 1998
                  (Exhibit  10.1 to the  Company's  Current  Report  on Form 8-K
                  dated as of December 7, 1998.)

4.5*              Marketing Agent Agreement by and between Electronic  Billboard
                  Technology,  Inc. And Vision Mark, L.L.C. dated as of November
                  11, 1998.  (Exhibit  10.2 to the Company's  Current  Report on
                  Form 8-K dated as of December 7, 1998.)

4.6*              Asset Purchase  Agreement by and among SI Diamond  Technology,
                  Inc.,  SIDT,  Inc.,  Sign Builders of America,  Inc. and Lance
                  Adams  dated  as of  August  31,  1999.  (Exhibit  2.1  to the
                  Company's  Current Report on Form 8-K dated as of September 3,
                  1999.)

4.7*              Secured Promissory Note dated as of September 3, 1999 by SIDT,
                  Inc.  as Maker and Sign  Builders of  America,  Inc.  and Sign
                  Builders,  Inc.,  collectively  as Payee.  (Exhibit 4.1 to the
                  Company's  Current Report on Form 8-K dated as of September 3,
                  1999.)

                                      II-6


<PAGE>

5.1               Opinion  of  Kilpatrick  Stockton  LLP,  as to  certain  legal
                  aspects of the offering.


23.1              Consent of Kilpatrick Stockton LLP (included in Exhibit 5.1).


23.2              Consent  of   WallaceSanders  &  Company.   (to  be  filed  by
                  amendment)


24                Powers of Attorney  (set forth on the  signature  page of this
                  Registration Statement).


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