SI DIAMOND TECHNOLOGY INC
8-K, 1999-09-17
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT
Previous: SI DIAMOND TECHNOLOGY INC, 3, 1999-09-17
Next: TELEPAD CORP, 15-12G, 1999-09-17



<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 8-K



               CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF
                    THE SECURITIES AND EXCHANGE ACT OF 1934


       Date of Report (Date of Earliest Event Reported): September 3, 1999


                          SI DIAMOND TECHNOLOGY, INC.
             (Exact Name of Registrant as Specified in its Charter)


                                     Texas
                 (State or Other Jurisdiction of Incorporation)


           1-11602                                76-0273345
    (Commission File No.)             (I.R.S. Employer Identification No.)


                            3006 Longhorn Boulevard
                                   Suite 107
                              Austin, Texas 78758
                    (Address of Principal Executive Offices)


                                 (512) 331-5020
              (Registrant's Telephone Number, Including Area Code)

<PAGE>   2
Item 2. Acquisition or Disposition of Assets

     On September 3, 1999, SI Diamond Technology, Inc. ("SIDT") and SIDT, Inc.,
its wholly owned indirect subsidiary closed an asset purchase with Sign Builders
of America, Inc. ("SBOA") and Sign Builders, Inc., a wholly owned subsidiary of
SBOA (collectively these two companies are referred to herein as the "Seller"),
and Lance Adams ("Adams") who owned 100% of the common stock of SBOA, in which
SIDT, Inc. purchased all of the assets of Seller.

     At the Closing:

     (1)  SIDT, Inc. paid $150,000 in cash to Seller and $300,000 in cash to
          Adams

     (2)  SIDT, Inc. executed a promissory note ("Note"), guaranteed by SIDT, in
          the amount of $450,000 payable to SBOA. Such Note is convertible, at
          the sole option of SBOA, into an equivalent value of shares of SIDT
          common stock as follows:

          (a)  The Note will bear interest at the rate of 6% per annum and
               shall be due and payable in two equal installments, the first
               due 6 months from the Closing Date and the second due one
               (1) year from the Closing Date.

          (b)  Payment of the Note is secured by the Seller retaining a
               security interest in the assets transferred to SIDT, Inc.

          (c)  $225,000 of the principal amount of the Note, plus accrued and
               unpaid interest, is convertible into SIDT Common Stock 6 months
               from the Closing Date. The remaining principal amount of
               $225,000, plus accrued and unpaid interest is convertible one
               year from the Closing Date. The conversion rate for converting
               the Note amounts into shares of SIDT Common Stock is equal to
               $2.127.  If SBOA elects to convert the Note into shares of SIDT
               Common Stock (whether in whole or part), the number of shares of
               SIDT Common Stock to be issued shall be determined by dividing
               the amount of the Note being converted (including accrued
               interest) by the conversion rate of $2.127. SBOA, at its option
               may make an election individually on each payment as to whether
               to receive cash or SIDT Common Stock.

          (d)  However, the Purchase Price is based on the requirement that the
               Gross Sales of Seller and SIDT for the 1999 calendar year be at
               least equal to $3,000,000. To the extent that such Gross Sales
               fall below $3,000,000, the principal balance of the Note shall be
               reduced proportionately.  The Note shall be reduced in the amount
               of $1.00 for each $2.00 of sales that the actual Gross Sales fall
               below $3,000,000.

     (3)  SIDT issued 329,101 shares of SIDT Common Stock to SBOA and 94,030
          shares to Adams. Adams owns 100% of the common stock of SBOA. SIDT
          agreed to register these shares of SIDT Common Stock as soon as
          administratively possible. If SIDT is unable to accomplish this
          registration within 6 months of the Closing Date, SIDT will issue
          Seller and Adams an additional number of shares of SIDT Common Stock
          equal to 20% of the number of shares of SIDT Common Stock issued to
          Seller and Adams at the Closing Date. SIDT agreed to keep this
          registration effective for a period of 1 year.

     The assets acquired in this transaction are for use in connection with the
building of electronic billboards and related products. SIDT intends to continue
to use and devote these assets to such business. SIDT used working capital funds
to pay the cash portion of the purchase price identified above. After the
closing, Mr. Adams will become employed by SIDT as an officer of Electronic
Billboard Technology, Inc. and SIDT, Inc., its wholly-owned subsidiaries.
<PAGE>   3
Item 7.  Financial Statements and Exhibits.

 (a)&(b)  The financial statements of the business acquired and the pro
          forma financial information required by items 7(a) and (b) of this
          Form 8-K are not included in this initial report. SIDT will file
          these items by amendment no later than 60 days after the date that
          this initial report is filed with the Commission.

     (c)  Exhibits:

2.1  Asset Purchase Agreement by and among SI Diamond Technology, Inc.,
     SIDT, Inc., Sign Builders of America, Inc., Sign Builders, Inc. and
     Lance Adams dated as of August 31, 1999


4.1  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


                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                        SI DIAMOND TECHNOLOGY, INC.


                                        By        /s/ Douglas P. Baker
                                           ----------------------------------
                                                    Douglas P. Baker
                                                   Vice President and
                                                Chief Financial Officer

Dated: September 17, 1999

<PAGE>   1


                                                                     EXHIBIT 2.1


                            ASSET PURCHASE AGREEMENT
                                  BY AND AMONG
                                  SIDT, INC.;
                          SI DIAMOND TECHNOLOGY, INC.;
                        SIGN BUILDERS OF AMERICA, INC.;
                              SIGN BUILDERS, INC.;
                                      AND
                                  LANCE ADAMS




<PAGE>   2

                                   SCHEDULES
<TABLE>
<S>                        <C>
SCHEDULE 1.1(A)            List of Assets

SCHEDULE 1.1(B)            Work-in-Process

SCHEDULE 1.1(E)            Contracts, Sale or Purchase Orders, Agreements, Etc.

SCHEDULE 1.1.2             Property Located on the Leasehold Property That Is Not Owned By Seller

SCHEDULE 2.2               Allocation of the Consideration

SCHEDULE 3.1               Assumed Obligations

SCHEDULE 7.10              Absence of Certain Changes or Events

SCHEDULE 7.11              Title to Properties; Absence of Liens and Encumbrances, Etc.

SCHEDULE 7.12              Leasehold Property

SCHEDULE 7.15              Agreements, Plans, Arrangements, Etc.

SCHEDULE 7.16              Patents, Trademarks, Copyrights, Etc.

SCHEDULE 7.17              Permits, Licenses, Etc.

SCHEDULE 7.18              Compliance with Applicable Laws

SCHEDULE 7.19              Litigation

SCHEDULE 7.20              Suppliers

SCHEDULE 7.21              Subleases

SCHEDULE 7.22              Purchase Obligations

SCHEDULE 7.24              All Salaried and Hourly Employees

SCHEDULE 7.25              Employee Benefits

SCHEDULE 7.27              Finder Fee
</TABLE>


<PAGE>   3

         THIS ASSET PURCHASE AGREEMENT dated the 31st day of August, 1999, by
and among SIDT, INC., a Delaware corporation having a principal place of
business at 3006 Longhorn Boulevard, Suite 107, Austin, Texas 78758
(hereinafter referred to as "Buyer"); SI DIAMOND TECHNOLOGY, INC., a Texas
corporation, having its principal place of business at 3006 Longhorn Boulevard,
Suite 107, Austin, Texas 78758 (hereinafter referred to as "SIDT"); and SIGN
BUILDERS OF AMERICA, INC. (hereinafter referred to as "SBOA") and SIGN
BUILDERS, INC., a wholly-owned subsidiary of SBOA (hereinafter referred to as
"SBI"), Texas corporations having their principal place of business at 4125-A
Todd Lane, Austin, Texas 78744 (hereinafter jointly referred to as "Seller");
and LANCE ADAMS, an individual residing at 4701 Staggerbrush, #23, Austin, TX
78749 (hereinafter referred to as "Majority Holder").

                                  BACKGROUND

         Seller is in the business of producing various forms of commercial
signs and signage. Buyer is interested in acquiring certain of the assets of
Seller associated with Seller's sign production business (the "Business") which
Seller is interested in selling to Buyer.

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements hereinafter set forth, the parties hereto hereby agree as follows:

1.       TRANSFER OF ASSETS AND PROPERTIES.

         1.1 Purchase and Sale of Assets.

             1.1.1    On the Closing Date (as hereafter defined) and
                      subject to the terms of this Agreement, Buyer shall
                      purchase from Seller, and Seller shall sell, assign,
                      transfer, convey, and deliver to Buyer, all of the
                      assets and properties of Seller used or held for use
                      by Seller in connection with the Business
                      (collectively, the "Assets") including the
                      following:

                      (a)      the list of assets set forth on SCHEDULE
                               1.1(A);

                      (b)      all Work-in-Process (being herein defined
                               as any and all executory contracts with
                               third party customers) as set forth on
                               SCHEDULE 1.1(B);

                      (c)      all goodwill pertaining to the Business
                               operations;

                      (d)      all names, marks, logos, slogans,
                               advertising, trademarks, and copyrights
                               (whether or not registered), inventions,
                               techniques, discoveries, improvements,
                               designs, patterns, specifications,
                               formulae, computer software, trade secrets,
                               proprietary rights, and nonpublic
                               information and data, whether patentable or
                               not (collectively, the "Rights") which


<PAGE>   4

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 2 of 27


                              are owned by Seller and used or held for
                              use in connection with the business;

                        (e)   all customer and supplier lists, working
                              files and correspondence with customers and
                              suppliers (both actual and prospective),
                              plans, blueprints, drawings, credit
                              information, business plans, studies,
                              surveys, reports, promotional literature,
                              and materials and trade association
                              memberships, used or held for use in
                              connection with or relating to the
                              business;

                        (f)   those contracts, sale or purchase orders,
                              agreements, prepaid service contracts,
                              leases, legally enforceable commitments,
                              and other binding arrangements of Seller
                              that are listed on SCHEDULE 1.1(E); and

                        (g)   to the extent legally permissible, all
                              licenses, permits, authorizations, and
                              other approvals from any governmental body
                              or authority (federal, state, or local)
                              (collectively, the "Permits") used or held
                              for use in connection with the Business.

                  1.1.2 The Assets shall not include the following:

                        (a)   bank accounts of Seller (however, all cash
                              on-hand at the time of Closing is part of
                              the Assets which will become the property
                              of Buyer upon the closing of this
                              transaction);

                        (b)   claims for income tax refunds,

                        (c)   corporate minute books and stock record
                              books of Seller; and

                        (d)   any property located on the Leasehold
                              Property that is not owned by Seller, a
                              list of such property is included on
                              SCHEDULE 1.1.2.

                        All of such excluded assets being
                        hereinafter referred to as the "Excluded
                        Assets." References to the Assets shall not
                        be deemed to include references to the
                        Excluded Assets.

            1.2   Instruments of Transfer and Assignment. On the
                  Closing Date Seller shall deliver, or cause to be
                  delivered, to Buyer, duly executed bills of sale,
                  assignments, endorsements, and other instruments and
                  documents, in


<PAGE>   5

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 3 of 27


                  form and substance satisfactory to Buyer and its counsel,
                  sufficient to vest in Buyer good and valid title to, any and
                  all of Seller's right, title, and interest in and to, the
                  Assets to the extent required by this Agreement including,
                  without limitation:

                  1.2.1    instruments of transfer and assignment with respect
                           to the Rights, in the form mutually acceptable to
                           Buyer and Seller; and

                  1.2.2    a lease for the real property located at 4125-A Todd
                           Lane, Austin, Texas in form and on terms acceptable
                           to Buyer.

         1.3      Consents to Assignments. Notwithstanding, any other provision
                  of this Agreement to the contrary, this Agreement shall not
                  constitute an agreement to assign any contract, agreement,
                  concession, claim, license, lease, commitment, sales order,
                  or purchase order (sometimes hereinafter referred to as
                  "Contract") without a consent, approval, or waiver if such
                  assignment would constitute a breach thereof or in any way
                  adversely affect the rights of Buyer or Seller thereunder. If
                  such consent, approval, or waiver of a Contract material to
                  the Business is not obtained, or is not reasonably
                  obtainable, Seller shall cooperate in any arrangement Buyer
                  may reasonably request to provide for Buyer the benefits
                  under any such Contract. This includes reasonable enforcement
                  for the benefit of Buyer of any and all rights of Seller
                  against any other party thereto arising out of the breach or
                  cancellation thereof by such party or otherwise. Any transfer
                  or assignment of any property, property right, contract, or
                  agreement material to the Business which shall require the
                  consent, approval, or waiver of any other party shall be made
                  subject to such consent, approval, or waiver being obtained.
                  However, Buyer shall not be required by this SECTION 1.3 to
                  enter into, or to accept as a substitute for performance by
                  Seller hereunder, any arrangement which would impose any
                  additional material cost, expense, or liability on Buyer or
                  would deprive Buyer of any material benefits contemplated by
                  this Agreement. Further, provided that nothing contained in
                  this SECTION 1.3 shall affect the liability, if any, of
                  Seller pursuant to this Agreement for failing to have used
                  its best efforts to obtain the approvals, consents,
                  clearances, and waivers referred to in SECTION 6.

         1.4      Seller's Endorsement. After the Closing Date, Seller shall
                  endorse, without recourse, any check or any other evidence of
                  indebtedness received by Seller on account of any Asset
                  transferred by Seller pursuant hereto.


<PAGE>   6

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 4 of 27


2.       PURCHASE.

         2.1      Consideration and Mode of Payment. The aggregate
                  consideration to be tendered by Buyer to Seller and Majority
                  Holder at the Closing hereunder is the assumption of those
                  liabilities specified in SECTION 3 below and the following
                  additional consideration (hereinafter the total consideration
                  shall be referred to as the "Purchase Price"):

                  2.1.1    At the time of Closing (as defined in SECTION 6),
                           Buyer will make a cash payment to (a) Seller in the
                           amount of $150,000.00 and (b) Majority Holder in the
                           amount of $300,000.00 (the "Cash Payment").

                  2.1.2    At the time of Closing, Buyer will also sign a
                           promissory note (the "Note") in the amount of
                           $450,000 payable to SBOA, which Note shall be
                           payable in cash or, at the option of SBOA, be
                           convertible into an equivalent value of shares of
                           the common stock of SIDT in accordance with the
                           following terms and conditions:

                           (a)      The Note will bear interest at the rate of
                                    six percent (6%) per annum and shall become
                                    due and payable in two (2) equal
                                    installments, the first due six (6) months
                                    from the date of Closing and the second due
                                    one (1) year from the date of Closing.
                                    Payment of the Note will be secured by
                                    Seller retaining a security interest in the
                                    Assets to be transferred hereunder.

                           (b)      One-half of the principal balance of the
                                    Note ($225,000) plus accrued interest will
                                    be convertible into the common stock of
                                    SIDT six (6) months after the date of
                                    Closing, with the balance of the Note
                                    ($225,000) plus accrued interest to be
                                    convertible in one year from the date
                                    Closing (the "Note Conversion Value"). The
                                    conversion rate ("Conversion Rate") for
                                    converting the value of the Note Conversion
                                    Value into shares of common stock of SIDT
                                    shall be equal to $2.127 per share. If SBOA
                                    elects to convert the Note into shares of
                                    common stock of SIDT (whether in whole or
                                    in part), the number of shares of stock to
                                    be issued to SBOA shall be determined by
                                    dividing the amount of the Note (including
                                    accrued interest) to be converted into SIDT
                                    stock by the Conversion Rate. SBOA, at its
                                    option, may make an election individually
                                    on each payment as to whether to receive
                                    cash or SIDT common stock.

                           (c)      However, the Purchase Price is based upon
                                    the requirement that the Gross Sales of
                                    Seller and Buyer for the 1999 calendar year


<PAGE>   7

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 5 of 27


                                    will equal at least three million dollars
                                    ($3,000,000). To the extent that the Gross
                                    Sales for the year fall below $3 million,
                                    the principal balance of the Note shall be
                                    reduced proportionately. The Note shall be
                                    reduced in the amount of $50,000 for each
                                    $100,000 of sales that the actual Gross
                                    Sales fall below the figure of $3 million.
                                    (By way of example only, if the actual
                                    Gross Sales for the year were to be $2.8
                                    million, the principal balance of the Note
                                    would be reduced by $100,000.) Gross Sales
                                    for the Year shall be computed exclusive of
                                    any sales to SIDT, or its subsidiaries,
                                    after the date of Closing and shall be made
                                    up of "Bona Fide Sales," only. For purposes
                                    of the Agreement, Bona Fide Sales shall
                                    mean any sale which results in a gross
                                    profit margin of not less than fifteen
                                    percent (15%). Gross profit margin shall be
                                    equal to the gross sales price, less direct
                                    materials, direct labor, and manufacturing
                                    overhead applied on the basis normally used
                                    by SBOA.

                           (d)      Additionally, if any of the individual
                                    executory agreements making up the Work In
                                    Process set forth on SCHEDULE 1.1(B)
                                    results in a financial loss (i.e., the cost
                                    of performing the agreement exceeds the
                                    revenue received or receivable therefrom),
                                    then in addition to the reduction in the
                                    amount of the Note referred to in paragraph
                                    (c) above, Buyer may also offset the amount
                                    of any such loss against the Note.

                  2.1.3    The balance of the Purchase Price, an amount equal
                           to $900,000, will be paid partially to SBOA and
                           partially to Majority Holder, or their assigns, in
                           the form of an equivalent value of the common stock
                           of SIDT (the "Stock Consideration Value") as
                           hereafter provided. The conversion rate ("Conversion
                           Rate") for converting the value of the Stock
                           Consideration Value into shares of common stock of
                           SIDT shall be $2.127 per share. Based upon the
                           Conversion Rate, the number of shares of SIDT common
                           stock to be issued to SBOA shall be 329,101 and the
                           number of shares of SIDT common stock to be issued
                           to Majority Holder shall be 94,030 shares. The
                           number of shares to be issued has been rounded to
                           the nearest whole number of shares to avoid issuing
                           fractional shares.

                  2.1.4    None of the shares of SIDT stock to be issued to
                           SBOA and Majority Holder pursuant to this Agreement
                           shall be registered with the Securities and Exchange
                           Commission. As such, SBOA and Majority Holder will
                           be restricted in their ability to freely transfer
                           the


<PAGE>   8

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 6 of 27


                           shares and may not do so until they have fully
                           complied with all applicable statutes and
                           regulations. Upon Closing, Buyer will make the
                           necessary arrangements to register the stock with
                           the Securities and Exchange Commission and will
                           thereafter diligently pursue the registration until
                           accomplished. It is estimated by Buyer that the
                           registration should be accomplished within
                           forty-five (45) days of Closing; however, if Buyer
                           is unable to accomplish the registration within six
                           (6) months of the Closing, Buyer will issue Seller
                           and Majority Holder an additional number of shares
                           of SIDT common stock equal to twenty percent (20%)
                           of the number of shares issued to Seller and
                           Majority Holder at Closing, as further described in
                           SECTION 2.1.2 above. The total of such shares shall
                           be issued to Seller and Majority Holder in
                           proportion to the number of shares of common stock
                           of SIDT issued to Seller and Majority Holder at
                           Closing. Upon registering the shares of stock Buyer
                           agrees to keep the registration effective for a
                           period of no less than one (1) year after Closing.

                  2.1.5    The parties agree and acknowledge that the total
                           consideration paid to Majority Holder under this
                           Agreement represents the value of the
                           Non-Competition Agreement of Majority Holder which
                           is set forth hereinbelow.

         2.2      Allocation of Consideration. Buyer and Seller agree that the
                  allocation of the Consideration among the Assets as set forth
                  on SCHEDULE 2.2 accurately reflects the price being paid for
                  each. Seller and Buyer shall report the sale and purchase of
                  the Assets in their respective tax returns as originally
                  filed for all federal, state, and local tax purposes in a
                  manner consistent with this allocation.

3.       ASSUMPTION OF LIABILITIES.

         3.1      Assumption. Upon the transfer of the Assets, Buyer shall
                  assume and pay, perform, and discharge all liabilities and
                  obligations (the "Assumed Obligations") of Seller set forth
                  on SCHEDULE 3.1 of this Agreement and under the Commitments
                  (as defined in SUBSECTION 7.15.1) accruing and performable on
                  and after the Closing Date including, without limitation,
                  those associated with rentals on the assumed lease agreement
                  being transferred to Buyer. The assumption by Buyer of the
                  Assumed Obligations shall not in any way enlarge the rights
                  of any third party under any contract or other arrangement
                  with Buyer or Seller. Nothing contained herein shall prevent
                  Buyer from contesting any of the Assumed Obligations with any
                  third party obligee.


<PAGE>   9

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 7 of 27


         3.2      Limitations on Assumption. Except as provided in SECTION 3.1,
                  neither Buyer nor SIDT agrees to assume, pay, perform or
                  discharge, or indemnify Seller against or have any
                  responsibility for any liability or obligation of Seller not
                  included in the Assumed Obligations, including, (a)
                  obligations or commitments, under purchase orders or
                  otherwise relating to the operation of the business prior to
                  the Closing; (b) liabilities and claims expressly reserved by
                  Seller; (c) the fees and expenses of Seller's counsel and
                  accountants and other experts; (d) liabilities or obligations
                  of Seller otherwise incurred on and after the Closing Date;
                  (e) liabilities or obligations involving the payment of any
                  domestic (federal, state, or local) taxes of any kind,
                  including, without limitation, sales taxes, transfer taxes,
                  gains taxes, recording taxes, and taxes on or measured by
                  income, any of which taxes are due or shall become due as a
                  result of the operations of Seller on or before the Closing
                  Date or interest or penalties relating thereto (all of such
                  excluded liabilities being hereinafter referred to as
                  "Excluded Liabilities").

         3.3      Instrument of Assumption. On the Closing Date, Buyer shall
                  deliver, or cause to be delivered, to Seller a duly executed
                  instrument of assumption with respect to the Assumed
                  Obligations, in form and substance acceptable to Seller.

         3.4      Right of Enforcement and Settlement. From and after the
                  Closing Date, Buyer shall have complete control over the
                  payment, settlement, or other disposition of the Assumed
                  Obligations and the right to commence, conduct and control
                  all negotiations and proceedings with respect thereto. Seller
                  shall notify Buyer promptly of any claim made with respect to
                  any such Assumed Obligation and shall not, except with the
                  latter's prior written consent, voluntarily make any payment
                  of, settle or offer to settle, or consent to any compromise
                  or admit liability with respect to, any such Assumed
                  Obligation.

4.       ASSIGNMENT BY BUYER TO ASSIGNEE. In its sole discretion, Buyer may
         assign to one or more Assignees of Buyer's choice on or after the date
         hereof all of Buyer's rights under this Agreement (and all of the
         Assets purchased under this Agreement); provided that any such
         Assignment shall not relieve Buyer from any of its obligations
         hereunder. In the event of such an Assignment, the Assignee shall
         assume all obligations of Buyer under this Agreement not fulfilled by
         Buyer prior to the Assignment and all references to Buyer hereunder
         shall be deemed to include the Assignee.


<PAGE>   10

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 8 of 27


5.       NON-DISCLOSURE AND NON-COMPETITION OBLIGATIONS. As part of the
         consideration and as an additional incentive for Buyer to enter into
         this Agreement, Seller, Majority Holder, and Buyer agree to the
         non-disclosure and non-competition provisions of this SECTION 5.

         5.1      Non-Disclosure.

                  5.1.1    Seller and Majority Holder acknowledge and agree
                           that Buyer acquired all trade secrets as defined in
                           the Uniform Trade Secrets Act related to and
                           associated with the Business upon acquiring it from
                           Seller, all of which constitutes "Confidential
                           Information" but in no event shall it include
                           information readily available to the public.

                  5.1.2    Seller and Majority Holder shall not at any time
                           divulge the Confidential Information to any person,
                           directly or indirectly, except to Buyer or its
                           directors, officers, and agents as reasonably
                           required in connection with their obligations under
                           the terms of the Purchase Agreement to Buyer, or use
                           the Confidential Information in any manner or for
                           any purpose. Seller shall deliver to Buyer all
                           records, papers, and computer data and any copies
                           thereof relating to the Confidential Information (or
                           if such papers, records, computer data, or copies
                           are not on the premises of Buyer, Sellers agree to
                           return such papers, records, and computer data as
                           soon as practicable after the Closing), Sellers
                           acknowledge that all such papers, records, computer
                           data, or copies thereof, are and remain the property
                           of Buyer.

                  5.1.3    Seller and Majority Holder acknowledge that (a) the
                           Confidential Information is commercially and
                           competitively valuable to Buyer; (b) the
                           unauthorized use or disclosure of the Confidential
                           Information would cause irreparable harm to Buyer;
                           (c) Buyer has taken and is taking all reasonable
                           measures to protect its legitimate interest in its
                           Confidential Information, including, without
                           limitation, affirmative action to safeguard the
                           confidentiality of such Confidential Information;
                           (d) the restrictions on the activities in which
                           Seller and Majority Holder may engage set forth in
                           this Agreement, and the period of time for which
                           such restrictions apply were agreed to by Seller and
                           Majority Holder in consideration of the purchase
                           price and compensation to be paid to Seller and
                           Majority Holder pursuant to the Purchase Agreement,
                           and that such restrictions are reasonably necessary
                           in order to protect Buyer's legitimate interests in
                           its Confidential Information; and (e) nothing herein
                           shall prohibit Buyer from pursuing any remedies,
                           whether in law or equity, available to Buyer for
                           breach or threatened breach of this Agreement,
                           including the recovery of damages from Seller and
                           Majority Holder.


<PAGE>   11

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 9 of 27


         5.2      Non-Competition.

                  5.2.1    Seller and Majority Holder agree that for a period
                           of three (3) years after the Closing, they will not
                           (directly or indirectly), solicit, entice away,
                           divert, or hire any of Buyer's employees, agents, or
                           representatives or any person or entity who is then
                           a customer of Buyer or who was a customer of the
                           Business at any time prior to or during Seller's
                           involvement with the Business.

                  5.2.2    Seller and Majority Holder agree that for a period
                           of three (3) years after the Closing (for whatever
                           reason) they will not, directly or indirectly, own,
                           manage, operate, control, be employed by,
                           participate in, provide consulting services to, or
                           be connected in any manner with the ownership,
                           management, operation, or control of, any business
                           or enterprise which is in competition with Buyer.
                           During such period Seller and Majority Holder will
                           not compete with Buyer by developing, marketing, or
                           assisting others to develop or market products or
                           services that are competitive with the products or
                           services of Buyer in North America.

                  5.2.3    Seller and Majority Holder represent and warrant
                           that their obligations to Buyer do not conflict with
                           and will not be constrained by any prior business
                           relationships and that Seller and Majority Holder do
                           not possess confidential information arising out of
                           any prior business relationships which, in Seller's
                           and Majority Holder's best judgment, would be
                           utilized in connection with Seller's and Majority
                           Holder's obligations to Buyer.

                  5.2.4    Seller and Majority Holder hereby represent and
                           acknowledge that the restrictions stated herein on
                           the activities in which Seller and Majority Holder
                           may engage are reasonable and that, despite such
                           restrictions, Seller and Majority Holder will be
                           able to earn a livelihood and engage in their
                           business or profession following the Closing; the
                           locations designated above are reasonable because
                           they are limited to the locations in which Buyer
                           presently does business, plans to do business or has
                           reasonable expectations of doing business in the
                           future; and the period of time designated above is
                           reasonable because it extends only for the mutually
                           agreed upon period following the Closing.

         5.3      Remedies. In the event of a breach of the covenants contained
                  in this SECTION 5, the periods provided herein shall be
                  tolled (i.e., such periods shall not run during a breach of
                  any covenant contained herein) during the


<PAGE>   12

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 10 of 27


                  time of such violation. In the event of such a breach, Seller
                  and Majority Holder further agree that Buyer shall be
                  entitled to recover all damages incurred as a result of such
                  breach.

         5.4      Injunctive Relief. Notwithstanding anything contained herein
                  to the contrary, in the event of a breach or threatened
                  breach of the covenants contained in this SECTION 5, Buyer
                  shall, in addition to all other available remedies, be
                  entitled to an injunction enjoining Seller and Majority
                  Holder and any person or persons acting for or in concert
                  with Seller and Majority Holder in any capacity whatsoever
                  from violating any of the provisions herein

6.       CLOSING. On the terms and subject to the conditions hereof, the
         closing of the transaction to be effected hereunder (the "Closing")
         shall be held at the offices of SI Diamond Technology, Inc. Suite 107,
         3006 Longhorn Boulevard, Austin, Texas 78758 on 3, September, 1999,
         commencing at 10:00 a.m. local time, or thereafter on such date, or
         within five business days after the conditions set forth in SECTIONS
         12.3, 12.4, and 12.5 have been fulfilled or waived, as is set forth in
         a notice from Buyer to Seller at least two days prior thereto, or at
         such other place or time or on such other date as shall be agreed upon
         by Buyer and Seller (the date of the Closing being herein referred to
         as the "Closing Date"). The Closing shall be effective as of 12:59
         p.m. on August 31, 1999.

7.       REPRESENTATIONS AND WARRANTIES OF THE MANAGEMENT AND SELLER. Seller
         and, to the best of his knowledge, Majority Holder hereby represent
         and warrant to Buyer as follows:

         7.1      Organization, Good Standing, Power, Etc. Seller is a
                  corporation duly organized, validly existing and in good
                  standing under the laws of the State of Texas. Seller has the
                  requisite legal authority to execute, deliver, and perform
                  this Agreement and to consummate the transactions
                  contemplated hereby. Seller has all Permits required to own
                  or lease and operate the Assets and carry on the business as
                  presently being conducted. Seller has shipped goods and
                  contracted for the installation of signage in most states.

         7.2      Certificate of Incorporation. Seller has furnished to Buyer
                  the Corporate Charter and Articles of Incorporation
                  ("Charter") of Seller.

         7.3      Subsidiaries. Seller does not have any subsidiaries, save and
                  except as disclosed herein.

         7.4      Ownership of Seller. Majority Holder directly or indirectly
                  owns all the authorized, issued, and outstanding shares of
                  capital stock of Seller.


<PAGE>   13

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 11 of 27


         7.5      Authorization of Agreement. The execution, delivery, and
                  performance by Seller and the consummation of the
                  transactions contemplated hereby have been duly authorized by
                  the Board of Directors and by the requisite stockholder vote
                  of Seller. This Agreement has been duly executed and
                  delivered by Seller and constitutes a valid and binding
                  obligation of Seller and Majority Holder, enforceable in
                  accordance with its terms, except as enforceability may be
                  limited by bankruptcy, insolvency, moratorium, or other
                  similar laws affecting the enforcement of creditors' rights
                  generally.

         7.6      Effect of Agreement, Etc. The execution, delivery, and
                  performance by Seller of the transactions contemplated hereby
                  will not (a) violate any law, statute, rule, or regulation
                  ("Law") to Seller is subject, which violation could have a
                  material adverse effect on the Assets; (b) violate any order,
                  judgment, injunction, writ, or decree ("Order") of any court
                  applicable to Seller or Majority Holder, which violation
                  could have a material adverse effect on the Assets; (c)
                  constitute a material violation of any of the Permits
                  referred to in SECTION 7.17; (d) conflict with any provision
                  of the Charter or bylaws, if any, of Seller; or (e) result in
                  the termination of, constitute a default under, or result in
                  the creation or imposition of any lien, security interest,
                  charge, or encumbrance upon any of the Assets pursuant to any
                  contract or other agreement or instrument, including any of
                  the Commitments, to which Seller is a party or by which any
                  of the Assets is bound, which would have a material adverse
                  effect on the value of the Assets, as a whole, or the
                  operations of the business.

         7.7      Governmental and Other Consents, Etc. No Permit and no
                  consent, authorization, or approval of, filing with, or
                  exemption by, any domestic (federal, state, or local) or
                  foreign governmental body or authority is required in
                  connection with the execution, delivery, and performance of
                  Seller of this Agreement or the consummation by Seller of the
                  transactions contemplated hereby.

         7.8      Financial Statements. Seller has delivered to Buyer correct
                  and complete copies of the balance sheets and related
                  statements of income for the fiscal years 1996 through 1998,
                  and for the period ending July 31,1999, for Seller, which
                  present fairly the financial position and results of
                  operations of the business for the period or as of the dates
                  indicated, in all material respects in accordance with the
                  common accounting practices of Seller applied on a basis
                  consistent with that of prior years or periods. Since August
                  1, 1999, there has been no material adverse change in the
                  financial condition, operations, or properties of Business.


<PAGE>   14

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 12 of 27


         7.9      Inventories. The Inventories reflected on the July 31, 1999,
                  Balance Sheet and the Closing Balance Sheet represent and
                  will represent all of the inventory of the Business as of the
                  dates of such balance sheets.

         7.10     Absence of Certain Changes or Events. Except as set forth in
                  SCHEDULE 7.10, since August 1, 1999, Seller has not, with
                  respect to the Business: (a) incurred any obligation or
                  liability (fixed or contingent) except (i) current trade or
                  business obligations incurred in the ordinary course of
                  business; (ii) obligations or liabilities under the
                  Commitments to the extent required thereby; and (iii)
                  obligations and liabilities under this Agreement; (b) made or
                  granted any general wage or salary increase; made or granted
                  any wage or salary increase to any employee or paid any bonus
                  to any employee other than a sales bonus or commission given
                  to a salesman in the ordinary course of business; engaged any
                  new officer or employee or entered into any employment
                  agreement with any officer or employee; (c) made any material
                  increase in or commitment to increase any employee benefits
                  or adopted or made any material commitments to adopt any
                  additional employee benefit plan; (d) made or entered into
                  any contracts to make any capital expenditures; (e)
                  mortgaged, pledged, or subjected to lien, security interest,
                  or any other encumbrance any of the Assets other than in the
                  ordinary course of business; (f) transferred or leased any of
                  the Assets, except for the sale of inventory in the ordinary
                  course of business; (g) financed accounts receivables or
                  failed to finance accounts receivables, other than in the
                  usual, regular, and ordinary course of business as such
                  business was conducted prior to August 1, 1999; (h) canceled
                  or compromised any debt or claim, except in the ordinary
                  course of business; (i) sold, assigned, transferred, or
                  granted any rights under or with respect to, any contracts,
                  agreements, licenses, permits, patents, inventions,
                  trademarks, trade names, copyrights, formulae, or Rights or
                  with respect to know-how or any other intangible asset; (j)
                  waived or released any other rights of material value; or (k)
                  entered into any transaction not in the ordinary course of
                  business.

         7.11     Title to Properties; Absence of Liens and Encumbrances, Etc.
                  Except as set for in SCHEDULE 7.11, Seller has good title to,
                  and owns outright, the Assets, free and clear of all
                  mortgages, claims, liens, charges, encumbrances, or security
                  interests except the Assumed Obligations. The leases and
                  other agreements or instruments under which Seller holds,
                  leases, or is entitled to the use of any real or personal
                  property used or held for use in connection with the Business
                  are in full force and effect and all rentals or other
                  payments accruing thereunder prior to the date hereof have
                  been duly paid or accrued and Seller enjoys peaceable and
                  undisturbed possession under all such leases. No default or
                  event of default exists, and no event which, with notice or
                  lapse of time or both,


<PAGE>   15

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 13 of 27


                  would constitute a default, has occurred and is continuing,
                  under the terms or provisions of any such lease, agreement,
                  or other instrument nor, to the knowledge of Seller, has
                  Seller received written notice of any claim of such default.

         7.12     Leasehold Property. SCHEDULE 7.12 contains a correct and
                  complete list as of the date hereof of all of the Leasehold
                  Property, setting forth where such property is located. All
                  such Leasehold Property is included in the Assets. The use of
                  all the Leasehold Property conforms with all applicable Laws
                  (including, without limitation, zoning ordinances) currently
                  in effect, which relate to the Leasehold Property or its
                  manner of use as of the Closing Date, the violation of which
                  would have a material adverse effect on the business. Correct
                  and complete copies of all Leases, and other documents
                  relating to any of the leasehold properties required to be
                  shown on SCHEDULE 7.12 as being leased by Seller have been
                  previously delivered or made available to Buyer.

         7.13     Equipment. SCHEDULE 1.1(A) contains a list of all equipment
                  used by business in its operations, all of which is included
                  in the Assets ("Equipment"). No Equipment has been disposed
                  of since August 1, 1999.

         7.14     Insurance. To the extent requested, Seller has given Buyer
                  notice of, and access to all of the books and records of
                  Seller relating to, (a) all accidents, casualties, or damage
                  occurring on or to the Assets or relating to the products of
                  the Business or (b) claims for damages, contribution, or
                  indemnification relating thereto and settlements or
                  negotiations of settlements relating thereto. To the extent
                  requested, Seller has provided to Buyer the workers'
                  compensation and unemployment insurance ratings and
                  contributions of Seller with respect to the employees of the
                  Business. Except as previously disclosed by Seller in writing
                  to Buyer, to the knowledge of Seller, there are no
                  outstanding or unsatisfied material requirements or
                  recommendations by any insurance company or other body
                  exercising similar functions or by any governmental authority
                  requiring that (i) any repairs or other work to be done on or
                  with respect to, or (ii) any equipment or facilities be
                  installed on or in connection with, any of the Assets or the
                  Business.

         7.15     Agreements, Plans, Arrangements, Etc.

                  7.15.1   Except as set forth in SCHEDULE 7.15 or any other
                           schedule to this Agreement, Seller is not a party to
                           or bound by, and the Assets are not bound by, any of
                           the following:


<PAGE>   16

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 14 of 27


                           (a)      any lease agreement (whether as lessor or
                                    lessee) relating to real or personal
                                    property to which Seller is not a party and
                                    which has not been assigned to Buyer as set
                                    forth under the terms of this Agreement;

                           (b)      license agreement, assignment, or contract
                                    (whether as licensor or licensee, assignor
                                    or assignee) relating to Rights or
                                    know-how, technical assistance, or other
                                    proprietary rights;

                           (c)      employment or consulting agreement;

                           (d)      agreement with any labor union or other
                                    collective bargaining unit;

                           (e)      agreement with any manufacturer, supplier,
                                    or customer with respect to discounts or
                                    allowances or extended payment terms other
                                    than in the ordinary course of business;

                           (f)      agreement for the borrowing or lending of
                                    money;

                           (g)      agreement granting any person any
                                    encumbrance on the Assets;

                           (h)      agreement for the construction,
                                    modification, or repair of any building or
                                    structure or for the incurrence of any
                                    other capital expenditure.

                           (i)      advertising agreement;

                           (j)      agreement which restricts it from doing
                                    business anywhere in the world except the
                                    restrictions related to the use of the
                                    trade name and trademark set forth in the
                                    License; or

                           (k)      other agreements affecting the Business or
                                    the Assets other than the purchase of
                                    supplies and inventory made in the ordinary
                                    course of business.

                           Correct and complete copies of all such contracts,
                           leases, agreements, orders, policies, arrangements,
                           understandings, commitments and other instruments
                           and written amendments identified on SCHEDULE 7.15
                           (collectively referred to herein as the
                           "Commitments"), have been previously delivered or
                           made available to Buyer.


<PAGE>   17

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 15 of 27


                  7.15.2   Except as noted in SCHEDULE 7.15, each of the
                           Commitments is valid and in full force and effect.

                  7.15.3   Except as set forth in SCHEDULE 7.15, Seller has
                           fulfilled, as applicable, or taken all action
                           reasonably necessary to enable it to fulfill when
                           due, all of its respective obligations under the
                           Commitments. There has not occurred any default by
                           Seller or others any event which, with the lapse of
                           time and/or the election of any person other than
                           Seller, will become a default, except defaults, if
                           any, which have been indicated in SCHEDULE 7.15.
                           Seller is not in arrears in respect of the
                           performance or satisfaction of the terms or
                           conditions to be performed or satisfied by it under
                           any of the Commitments and, no waiver or indulgence
                           has been granted by any of the parties thereto.

                  7.15.4   Except as set forth in SCHEDULE 7.15, each of the
                           Commitments is assignable by Seller to Buyer without
                           the consent of the other parties thereto.

         7.16     Patents, Trademarks, Copyrights, Etc. SCHEDULE 7.16 contains
                  a correct and complete list of all Rights (as defined in
                  SECTION 1.1.1) currently used or held for use by Seller in
                  connection with the Business indicating the registered and
                  beneficial owner and the expiration date thereof. Seller owns
                  or possesses adequate licenses or other valid rights to use
                  all Rights and other proprietary information necessary to the
                  conduct of the Business as currently being conducted. To the
                  knowledge of Seller, no use is now being made of any Rights
                  owned by or licensed to Seller, except by Seller in
                  connection with the Business or by other entities duly
                  licensed to use the same under agreements disclosed in
                  SCHEDULE 7.16. No infringement of any proprietary right owned
                  or licensed by Seller used or held for use in connection with
                  the Business is known to Seller.

         7.17     Permits, Licenses, Etc. Seller has all material Permits
                  required to permit it to own, maintain, and operate the
                  Business and the Assets as currently conducted. SCHEDULE 7.17
                  contains a correct and complete list of all such Permits, all
                  of which are in full force and effect and are assignable to
                  Buyer pursuant to the terms of this Agreement except as
                  otherwise indicated in SCHEDULE 7.17; and Seller knows of no
                  threatened suspension, cancellation, modification, or
                  nonrenewal of any of them. All such Permits are included in
                  the Assets.

         7.18     Compliance with Applicable Laws. The conduct by Seller of the
                  Business does not violate any Law or Order currently in
                  effect. Seller is not in


<PAGE>   18

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 16 of 27


                  default under any governmental or administrative order or
                  demand directed to it, or with respect to any Order. Seller
                  has not received any notice of violation of any applicable
                  Law or Order relating to the Assets or the operations of the
                  Business that has not been cured. Seller has fully and
                  completely complied with all federal, state, county, and
                  municipal statutes, regulations, orders, and ordinances
                  regarding the handling and disposal of hazardous materials
                  and hazardous waste, including but not limited to, the
                  requirements of the CERCLA and/or RCRA statutes. Seller has
                  no knowledge of any condition which could potentially result
                  in a claim being made against Seller for environmental
                  clean-up or remediation, except as set forth on SCHEDULE
                  7.18.

         7.19     Litigation. There is no claim, action, suit, proceeding,
                  arbitration, investigation, or hearing or notice of hearing
                  pending or, to the knowledge of Seller, threatened, before
                  any court or governmental or administrative authority or
                  private arbitration tribunal against Seller except as set
                  forth on SCHEDULE 7.19. Seller has not waived any statute of
                  limitations or other affirmative defense with respect to any
                  of its liabilities relating to the Business. There is no
                  continuing Order of any court or other tribunal or any
                  governmental agency to which Seller is a party or subject
                  relating to the Business or the Assets. Seller is not
                  presently subject to any injunction of any court or other
                  tribunal or any governmental agency prohibiting Seller from
                  engaging in or continuing any conduct or practice in
                  connection with the Business.

         7.20     Suppliers. SCHEDULE 7.20 contains a complete list of all
                  current suppliers of the Business (the "Suppliers"), as at
                  the quarter ending June 30, 1999; the list of Suppliers
                  contains a general description of items supplied but does not
                  include any Supplier which sold less than an aggregate of
                  $500 of supplies to Seller during the twelve month period
                  ending June 30, 1999. Seller has no knowledge of any
                  termination or cancellation of or any modification or change
                  in, the business relationship of the Business with any
                  Suppliers which would have a material averse effect on the
                  Business.

         7.21     Subleases. SCHEDULE 7.21 sets forth the names of each
                  sublessee of Seller and each such sublessee's monthly rental
                  payment, deposit, if any (complete list of short term leases
                  who sublease).

         7.22     Purchase Obligations. Except as shown on SCHEDULE 7.22, there
                  are no outstanding purchase orders and other commitments for
                  purchases by Seller relating to the Business or on behalf of
                  the Business. No customer of Seller has prepaid the cost of
                  services or products as of the date of this Agreement, except
                  as disclosed on SCHEDULE 7.22.


<PAGE>   19

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 17 of 27


         7.23     Books and Records. The books of account and other financial
                  and business records of Seller relating to the Business are
                  in all material respects complete and correct and are
                  maintained in accordance with good business practices
                  applicable to the Business.

         7.24     Labor Relations, Etc.

                  7.24.1   Seller is in compliance in all material respects
                           with all Laws respecting employment, and employment
                           practices, terms and conditions of employment, and
                           wages and hours relating to persons employed in the
                           business ("Employees"). Seller has withheld all
                           amounts required by Law in an amount which would be
                           material to the Business to be withheld from the
                           ages or salaries of, and other payments to,
                           Employees and former Employees and is not liable for
                           any arrears of wages, salaries, or other payments to
                           such employees and former employees or any taxes or
                           penalties for failure to comply with any of the
                           foregoing in an amount which would be material to
                           the business. With respect to Employees, Seller has
                           not engaged in any unfair labor practice and has not
                           discriminated on the basis of age or sex in its
                           employment conditions or practices. There is no
                           unfair labor practice or age or sex discrimination
                           complaint or any other employment related complaint
                           pending or threatened against Seller.

                  7.24.2   SCHEDULE 7.24 sets forth a list of all salaried and
                           hourly Employees of Seller as of the date of
                           Closing, with aggregate annual compensation
                           (including bonuses, incentive compensation and
                           commissions, if any) on an annualized basis for
                           calendar year 1999, the names, position titles,
                           aggregate compensation, and actual or estimated
                           contribution to pension and benefit plans on behalf
                           of such persons projected for the year ended
                           December 31, 1999, and the amount and date of last
                           wage or salary increase. None of such Employees have
                           resigned or retired or notified Seller in writing of
                           his or her intention to resign or retire.

         7.25     Employee Benefits. SCHEDULE 7.25 contains a complete and
                  accurate list of all pension, profit sharing, stock option,
                  stock purchase, welfare, bonus, disability, insurance,
                  incentive, deferred compensation, and other similar fringe or
                  employee benefit plans, programs, or arrangements relating to
                  the Employees (the "Employee Plans").

                  7.25.1   Each Employee Plan is in substantial compliance in
                           all material respects with the requirements
                           prescribed by any and all statutes or governmental
                           rules and regulations currently in effect.


<PAGE>   20

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 18 of 27


                  7.25.2   Seller has delivered to Buyer true and complete
                           copies of all Employee Plans. With respect to each
                           (within the meaning of Section 3(2) of ERISA), true
                           and complete copies of the (a) most recent annual
                           actuarial valuation report, if any; (b) the last
                           filed Form 5500 and Schedule A or B thereto or both;
                           and (c) the Summary Plan Description, have been
                           delivered to Buyer and are correct in all material
                           respects.

                  7.25.3   Each Employee Plan intended to qualify under
                           Sections 401(a) and 401(k) of the Internal Revenue
                           Code of 1986, as amended (the "Code") has heretofore
                           been determined by the Internal Revenue Service to
                           so qualify or an application for such determination
                           has been made, and a copy of the most recent
                           determination letter or application therefor with
                           respect to each such Employee Plan has been
                           delivered to Buyer.

         7.26     Power of Attorney. No person has any power of attorney
                  outstanding in connection with the business of the Business
                  or the Assets which would be binding on Buyer or the Business
                  after the Closing.

         7.27     Finder. Except as disclosed on SCHEDULE 7.27, there is no
                  person that may be entitled to a finder's fee or any type of
                  commission in relation to or in connection with the
                  transactions contemplated by this Agreement as a result of
                  any agreement or understanding with Seller or Majority Holder
                  or affiliates.

         7.28     Y2K Compliance. To the best of Seller's knowledge and belief
                  it has made an investigation within the Business and is
                  compliant with the computer situation generally known as
                  "Y2K," which involves potential computer malfunctions on or
                  after January 1, 2000, resulting from the inability of
                  computers to properly deal with dates represented by six (or
                  fewer) digits. Seller has no reason to believe that the Y2K
                  situation will cause any interruption in Seller's normal
                  business operations.

         7.29     General Representation and Warranty. None of the
                  representations and warranties of Seller and to the best of
                  their knowledge, Majority Holder made in this Agreement
                  contain any untrue statement of material fact or omits to
                  state any material fact necessary in order to make said
                  representations and warranties not misleading.


<PAGE>   21

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 19 of 27


8.       REPRESENTATIONS AND WARRANTIES OF BUYER. Buyer hereby represents and
         warrants to Seller as follows:

         8.1      Organization, Etc. Buyer is a corporation duly organized,
                  validly existing and in good standing under the laws of the
                  State of Delaware. Buyer has the requisite corporate powers
                  to execute, deliver, and perform this Agreement and to
                  consummate the transactions contemplated hereby and thereby.

         8.2      Authorization of Agreement. The execution, delivery, and
                  performance by Buyer of this Agreement and the consummation
                  of the transactions contemplated hereby have been duly
                  authorized by its Board of Directors. This Agreement has been
                  duly executed and delivered by Buyer and constitutes a valid
                  and binding obligation of Buyer enforceable in accordance
                  with its terms, except as enforceability may be limited by
                  bankruptcy, insolvency, moratorium, or other similar laws
                  affecting the enforcement of creditors' rights generally.

         8.3      Governmental and Other Consents. No Permit and no consent,
                  authorization, or approval of, or exemption by governmental,
                  public, or self-regulatory body or authority is required in
                  connection with the execution, delivery, and performance by
                  Buyer of this Agreement or the consummation by Buyer of the
                  transactions contemplated hereby.

         8.4      Effect of Agreement. The execution, delivery, and performance
                  by Buyer of this Agreement and the consummation by Buyer of
                  the transactions contemplated hereby will not (a) violate any
                  Law to which Buyer is subject, (b) violate any Order of any
                  court applicable to Buyer or, (c) conflict with any provision
                  of the charter or bylaws of Buyer, result in the termination
                  of, constitute a default under any contract or other
                  agreement or instrument to which Buyer is a party or by which
                  any of its properties are bound or subject.

         8.5      General Representation and Warranty. None of the
                  representations and warranties of Buyer made in this
                  Agreement contains any untrue statement of material fact or
                  omits to state any material fact necessary in order to make
                  said representations and warranties not misleading.

9.       COVENANTS OF SELLER. For a period of five (5) years following the
         Closing unless a shorter period is stated, Seller hereby covenants and
         agrees with Buyer as follows:

         9.1      Access to Properties and Records. Seller shall give to Buyer
                  and to its counsel, accountants, and other representatives
                  reasonable access during


<PAGE>   22

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 20 of 27


                  normal business hours to such of its books and records as
                  relate to the business or the Assets in the possession of
                  Seller or Majority Holder and shall allow Buyer to make
                  copies therefrom. Seller shall furnish to Buyer and such
                  representatives all such additional documents and financial,
                  tax, and other information concerning such business and
                  Assets as Buyer or its representatives may from time to time
                  reasonably request.

         9.2      Advice of Changes. Seller shall advise Buyer promptly in
                  writing of any material fact, which, if known at the date
                  hereof, would have been required to be set forth or disclosed
                  in or pursuant to this Agreement.

         9.3      Approvals, Consents, Etc. At Buyer's request, Seller shall
                  reasonably assist Buyer in obtaining all approvals, consents,
                  clearances, and waivers material to the Business required to
                  be obtained by Seller in order to effectuate the transactions
                  contemplated hereby, and shall deliver to Buyer copies,
                  reasonably satisfactory in form and substance to counsel for
                  Buyer, of such approvals, consents, clearances, and waivers.

         9.4      Employer Tax Matters. Seller shall make a clean cut-off of
                  payroll and payroll tax reporting with respect to the
                  Employees at the Closing, with Seller paying over to the
                  federal, state, and city governments those amounts required
                  to be withheld before the Closing. Seller shall issue, by the
                  date prescribed by IRS regulations, Forms W-2 for wages paid
                  through the Closing. Buyer shall be responsible for all
                  payroll responsibilities resulting from operations after the
                  Closing.

         9.5      Collection of Accounts. Seller agrees to assist Buyer in
                  collecting the outstanding accounts receivable of Seller
                  arising from the business conducted prior to Closing.

10.      REPRESENTATIONS OF MAJORITY HOLDER. Upon the Closing of this
         transaction, and subject to reaching a mutually satisfactory agreement
         with regard to compensation and benefits, Buyer intends to employ
         Majority Holder and Majority Holder intends to accept employment with
         Buyer.

11.      COVENANTS OF BUYER. Buyer shall use its best efforts to assure that
         the conditions set forth in SECTION 12 are satisfied by the Closing
         Date.

12.      CONDITIONS PRECEDENT TO THE OBLIGATIONS OF BUYER. The obligations of
         Buyer under this Agreement are subject to the satisfaction of the
         following conditions as of the Closing Date, any or all of which
         conditions may be waived by Buyer in its sole discretion:


<PAGE>   23

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 21 of 27


         12.1     Accuracy of Representations and Warranties. The
                  representations and warranties of Seller contained in this
                  Agreement shall be true and accurate in all material
                  respects.

         12.2     Performance of Agreements. Seller shall have in all material
                  respects performed and complied in all material respects with
                  all covenants, obligations and agreements to be performed or
                  complied with by it on or before the Closing pursuant to this
                  Agreement.

         12.3     Consents. Buyer shall have received all necessary consents,
                  approvals, clearances, or waivers for the transfer of the
                  Assets or entered into appropriate agreements permitting the
                  transfer of the Assets.

         12.4     Secretary's Certificate. Buyer shall have received an
                  accurate certificate, dated the Closing Date, of the
                  Secretary of Seller (or other appropriate official) with
                  respect to (a) the resolutions adopted by the Board of
                  Directors of Seller approving this Agreement and the
                  transactions contemplated hereby and (b) the incumbency and
                  specimen signature of each officer of Seller executing this
                  Agreement and any other document to be executed by Seller, as
                  the case may be, and a certification by another officer of
                  Seller, as the case may be, as to the incumbency and specimen
                  signature of said Secretary (or other appropriate official).

         12.5     Transfer Instruments. Seller, as appropriate, shall have
                  executed and/or delivered to Buyer the instruments of
                  transfer and assignment and the lease as provided in SECTION
                  1.2.

13.      CONDITIONS PRECEDENT TO THE OBLIGATIONS OF SELLER. The obligations of
         Seller under this Agreement are subject to the satisfaction of the
         following conditions as of the Closing Date, any or all of which may
         be waived by Seller in its sole discretion.

         13.1     Accuracy of Representations and Warranties. The
                  representations and warranties of Buyer contained in this
                  Agreement shall be true and accurate in all material respects
                  on and as of the Closing.

         13.2     Receipt of Cash Consideration. Seller shall have received the
                  Cash Payment, the Note duly executed by Buyer and a
                  certificate representing the number shares of stock equal to
                  the Stock Consideration Value which has been duly and
                  properly issued by Buyer.


<PAGE>   24

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 22 of 27


14.      INDEMNIFICATION.

         14.1     Indemnification by Seller and Majority Holder. Seller and
                  Majority Holder hereby jointly and severally covenant and
                  agree with Buyer that they or either of them shall indemnify
                  Buyer and its directors, officers, and employees, and each of
                  its successors and assigns, and hold them harmless from,
                  against, and in respect of any and all costs, losses, claims,
                  liabilities, fines, penalties, damages, and expenses
                  (including interest which may be imposed in connection
                  therewith and court costs and fees and disbursements of
                  counsel) ("Losses") incurred by any of them in connection
                  with:

                  14.1.1   all liabilities, claims, losses, and causes of
                           actions alleged against Buyer arising from or in any
                           way related to the acts, omissions, or transactions
                           of Seller, including but not limited to the
                           operation of the business and/or the Assets prior to
                           the Closing Date;

                  14.1.2   any inaccuracy or any breach of any of the
                           representations, warranties, covenants, or
                           agreements made by Seller in this Agreement; or

                  14.1.3   any action, suit, proceeding, compromise,
                           settlement, assessment or judgment arising out of or
                           incident to any of the matters indemnified against
                           in this SECTION 14.1

         14.2     Indemnification by Buyer. Buyer hereby covenants and agrees
                  with Seller that it shall indemnify Seller and its directors,
                  officers, and employees, and each of its successors and
                  assigns, and hold them harmless from, against and in respect
                  of any and all Losses incurred by any of them in connection
                  with:

                  14.2.1   all claims against Seller arising in connection with
                           or relating to the operation of the business or the
                           Assets following the Closing Date;

                  14.2.2   Buyer's failure to pay, discharge, or perform any of
                           the Assumed Obligations and commitments;

                  14.2.3   any attempt by any person to cause or require a
                           party indemnified pursuant to this SECTION 14.2 to
                           pay or discharge any of the Assumed Obligations and
                           commitments;

                  14.2.4   any action, suit, proceeding, compromise,
                           settlement, assessment, or judgment arising out of
                           or incident to any of the matters indemnified
                           against in this SECTION 14.2; or


<PAGE>   25

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 23 of 27


                  14.2.5   any inaccuracy or any breach of any of the
                           representations, warranties, covenants, or
                           agreements made by Buyer in this Agreement.

         14.3     Right to Defend, Etc. If the facts given rise to any
                  indemnification pursuant to SECTION 14.1 or SECTION 14.2
                  shall involve any actual claim or demand by any third party
                  against an indemnified party, the indemnifying party shall be
                  entitled to notice of and entitled (without prejudice to the
                  right of any indemnified party to participate at its expense
                  through counsel of its own choosing) to defend or prosecute
                  such claim at its expense and through counsel of its own
                  choosing, which counsel shall be reasonably satisfactory to
                  the indemnified party, if it gives written notice of its
                  intention to do so to the indemnified party; provided,
                  however, that if the defendants in any action shall include
                  both an indemnified party and an indemnifying party and the
                  indemnified party shall have reasonably concluded, after
                  consultation with the indemnifying party, that counsel
                  selected by the indemnifying party has a conflict of interest
                  because of the availability of different or additional legal
                  defenses to the indemnified party, the indemnified party
                  shall have the right to select separate counsel to
                  participate in the defense of such action on its behalf, at
                  the expense of the indemnifying party. All notices under this
                  SECTION 14.3 must be given prior to the time by which the
                  interests of the party or parties to be notified will be
                  materially prejudiced as a result of the failure to have
                  received such notice. The failure to give such notice shall
                  not relieve any party of any liability which it may have
                  other than under SECTION 14.1 or SECTION 14.2. Such
                  indemnified party shall cooperate fully in the defense of
                  such claim and shall make available to the indemnifying
                  party, as the case may be, all pertinent information under
                  its control relating thereto, but shall be entitled to be
                  reimbursed, as provided in SECTION 14.1 or SECTION 14.2, for
                  all costs and expenses incurred by it in connection
                  therewith.

15.      RIGHTS OF OFFSET. Buyer shall be entitled to retain and deduct from
         the Note the amount of any Losses (as defined in SECTION 14.1 above)
         actually incurred by Buyer and thereby reduce the amount remaining due
         Seller under this Agreement.

16.      TERMINATION.  This Agreement shall terminate:

         16.1     if the Closing Date does not occur on or before November 1,
                  1999;

         16.2     by notice of Buyer to Seller, if on the Closing Date any of
                  the conditions set forth in SECTION 11 have not been met or
                  waived by Buyer;


<PAGE>   26

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 24 of 27


         16.3     by notice of Seller to Buyer, if on the Closing Date any of
                  the conditions set forth in SECTION 12 have not been met or
                  waived by Seller; or

         16.4     by mutual consent of Seller and Buyer.

17.      GENERAL.

         17.1     Expenses, Taxes. Whether or not the transactions contemplated
                  by this Agreement are consummated, Buyer and Seller shall pay
                  their own respective expenses and the fees and expenses of
                  their respective counsel and accountants and other experts,
                  except as otherwise specified in this Agreement. Buyer shall
                  bear all sales and use taxes, transfer taxes, recording
                  taxes, and similar taxes payable or determined to be payable
                  in connection with the execution, delivery, and performance
                  of this Agreement and the transfer of the Assets contemplated
                  hereby and agrees to save Seller harmless from and against
                  any and all liabilities with respect to or resulting from any
                  delay in paying or omitting to pay such taxes.

         17.2     Survival of Representations and Warranties Each party hereto
                  covenants and agrees that each of the representations,
                  warranties, covenants, agreements, and indemnities in
                  connection therewith contained in this Agreement shall
                  survive until the expiration of the applicable statute of
                  limitations following the Closing unless a claim for
                  indemnification shall be made with respect thereto prior to
                  the end of such period, in which case the survival of such
                  representation, warranty, covenant, agreement, or
                  indemnification shall survive until such claim is satisfied,
                  settled, or dismissed.

         17.3     Waivers. No action taken pursuant to this Agreement,
                  including any investigation by or on behalf of any party,
                  shall be deemed to constitute a waiver by the party taking
                  such action of compliance with any representation, warranty,
                  covenant, or agreement contained herein. The waiver by any
                  party hereto of a breach of any provision of this Agreement
                  shall not operate or be construed as a waiver of any
                  subsequent breach. The waiver by any party hereto at or
                  before the Closing Date of any condition to its obligations
                  hereunder which is not fulfilled shall not preclude such
                  party from seeking redress from the other party hereto for
                  breach of any representation, warranty, covenant, or
                  agreement contained in this Agreement.

         17.4     Binding Effect; Benefits. This Agreement shall inure to the
                  benefit of the parties hereto and shall be binding upon the
                  parties hereto and their


<PAGE>   27

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 25 of 27


                  respective successors and assigns. Except as otherwise set
                  forth herein, nothing in this Agreement, expressed or
                  implied, is intended to confer on any person other than the
                  parties hereto or their respective successors and assigns any
                  rights, remedies, obligations, or liabilities under or by
                  reason of this Agreement.

         17.5     Notices. All notices, requests, demands, and other
                  communications which are required to be or may be given under
                  this Agreement shall be in writing and shall be deemed to
                  have been duly given when delivered in person or transmitted
                  by telex, telecopy, or facsimile transmission (with
                  confirmation of receipt) or upon receipt after dispatch by
                  certified or registered first class mail, postage prepaid,
                  return receipt requested, or by overnight courier to the
                  party to whom the same is so given or made:

                  If to Seller or Majority Holder, to:

                           Sign Builders of America, Inc.
                           C/O Christopher B. Keller
                           8235 Shoal Creek Blvd.
                           Austin, TX  78757


                  If to Buyer, to:

                           SI Diamond Technology, Inc.
                           3006 Longhorn Blvd., Suite 107
                           Austin, TX  78758
                           Attn: President

                  or to such other address as such party shall have specified
                  by notice to the other party hereto.

         17.6     Entire Agreement. This Agreement (including the Schedules
                  hereto) constitutes the entire agreement and supersedes all
                  prior agreements and understandings, oral and written,
                  between the parties hereto with respect to the subject matter
                  hereof and cannot be changed or terminated orally.

         17.7     Headings. The section and other headings contained in this
                  Agreement are for reference purposes only and shall not be
                  deemed to be a part of this Agreement or to affect the
                  meaning or interpretation of this Agreement.

         17.8     Schedules. All Schedules hereto have been delivered by the
                  parties hereto to each other previously or simultaneously
                  herewith.


<PAGE>   28

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 26 of 27


         17.9     Counterparts. This Agreement may be executed in any number of
                  counterparts, each of which, when executed, shall be deemed
                  to be an original and all of which together shall be deemed
                  to be one and the same instrument.

         17.10    Rules of Construction.

                  17.10.1    In this Agreement, unless the context otherwise
                             requires, words in the singular number or in the
                             plural number shall each include the singular
                             number and the plural number, and words of the
                             masculine gender shall include the feminine and
                             the neuter, and, when the sense so indicates,
                             words of the neuter gender may refer to any
                             gender.

                  17.10.2    The term "affiliate" shall mean any person
                             directly or indirectly controlling, controlled by,
                             or under common control with the person of which
                             it is an affiliate.

                  17.10.3    The term "person" shall mean an individual, a
                             corporation, a partnership, an association, a
                             trust, or any other entity or organization,
                             including a government or political subdivision or
                             an agency or instrumentality thereof.

                  17.10.4    The terms "included" or "including" shall mean
                             without limitation by reason of enumeration.

         17.11    Governing Law. This Agreement shall be construed as to both
                  validity and performance and enforced in accordance with and
                  governed by the laws of the State of Texas and is performable
                  in Austin, Travis County, Texas.

         17.12    Separability. Any term or provision of this Agreement which
                  is invalid or unenforceable shall be ineffective to the
                  extent of such invalidity or unenforceability without
                  rendering invalid or unenforceable the remaining terms and
                  provisions of this Agreement. However, to the extent that any
                  time of performance or area of performance of the
                  Non-competition covenant set forth in Section 5.2 is held by
                  any court of competent jurisdiction to be unenforceable by
                  virtue of its being too broad in its scope, then the court
                  making that judgment shall reform that section of the
                  Agreement to make the requirements of Section 5.2 reasonable
                  in terms of term and scope of the restrictions.

         17.13    Publicity Concerning Agreement. The parties agree that this
                  Agreement constitutes a material obligation of Buyer, as that
                  term is applicable to the


<PAGE>   29

Asset Purchase Agreement By and Among
SIDT, Inc.;  SI Diamond Technology, Inc.;
Sign Builders of America, Inc.;  Sign Builders, Inc.;
And Lance Adams
Page 27 of 27


                  Securities Exchange Act of 1934 as amended. As such Buyer is
                  required to make a public disclosure of this Agreement and
                  may further be required to include a copy of this Agreement
                  which will thereafter become a matter of public record.
                  Seller shall take no action which will inhibit nor preclude
                  Buyer from fulfilling this obligation.

         17.14    Amendments. This Agreement may not be modified or changed
                  except by an instrument or instruments in writing signed by
                  the party against whom enforcement of any such modification
                  or amendment is sought.

         IN WITNESS WHEREOF, the parties have executed this Agreement on the
date first above written.

SIDT, INC.                               SI DIAMOND TECHNOLOGY, INC.
("Buyer")                                ("SIDT")


By:                                      By:
   -----------------------------------      -----------------------------------
      Douglas P. Baker, Vice President        Douglas P. Baker, Vice President
      and Chief Financial Officer             and Chief Financial Officer


SIGN BUILDERS OF AMERICA, INC.           SIGN BUILDERS, INC.
("SBOA")                                 ("SBI")

                       (jointly referred to as "Seller")


By:   /s/ Lance Adams                    By:  /s/ Lance Adams
   -----------------------------------      -----------------------------------
      Lance Adams, President                  Lance Adams, President


LANCE ADAMS
("Majority Holder")

 /s/ Lance Adams
- --------------------------------------


<PAGE>   1

                                                                    EXHIBIT 4.1

                            SECURED PROMISSORY NOTE


Date:  September 3, 1999

Maker:  SIDT, Inc., a Delaware corporation

Maker's Mailing Address:  3006 Longhorn Blvd., Ste. 107, Austin, Texas 78758

Payee:  Sign Builders of America, Inc., a Texas corporation, and Sign Builders,
Inc., a Texas corporation

Place for Payment:  4701 Staggerbrush, Apt. 234, Austin, Texas 78749

Principal Amount:  Four Hundred Fifty Thousand and No/100 ($450,000.00) Dollars

Annual Interest Rate on Unpaid Principal from Date:  Six (6%) percent

Annual Interest Rate on Matured, Unpaid Amounts:  Highest Allowed by Law

Terms of Payment (principal and interest):  This note is due and payable in two
equal installments of $228,325.12. The first installment is due and payable on
March 3, 1999. The second installment is due and payable on September 3, 1999.

Security for Payment:  This note is secured by a Security Agreement of even
date herewith from Maker to Payee granting a security interest in and to all
property described in or referred to in said Security Agreement.

     Maker promises to pay to the order of Payee at the place for payment and
according to the terms of payment the principal amount plus interest at the
rates stated above. All unpaid amounts shall be due by the final scheduled
payment date.

     On default in the payment of this note or in the performance of any
obligation in any instrument securing or collateral to it, the unpaid principal
balance and earned interest on this note shall become immediately due at the
election of Payee. Maker and each




<PAGE>   2
surety, endorser, and guarantor waive all demands for payment, presentations
for payment, notices of intention to accelerate maturity, notices of
acceleration of maturity, protests, and notices of protest.


     If this note or any instrument securing or collateral to it is given to an
attorney for collection or enforcement, or if suit is brought for collection or
enforcement, or if it is collected or enforced through probate, bankruptcy, or
other judicial proceeding, then Maker shall pay Payee all costs of collection
and enforcement, including reasonable attorney's fees and court costs, in
addition to other amounts due. Reasonable attorney's fees shall be 10% of all
amounts due unless either party pleads otherwise.


     Interest on the debt evidenced by this note shall not exceed the maximum
amount of nonusurious interest that may be contracted for, taken, reserved,
charged, or received under law; any interest in excess of that maximum amount
shall be credited on the principal of the debt or, if that has been paid,
refunded. On any acceleration or required or permitted prepayment, any such
excess shall be canceled automatically as of the acceleration or prepayment or,
if already paid, credited on the principal of the debt or, if the principal of
the debt has been paid, refunded. This provision overrides other provisions in
this and all other instruments concerning the debt.


     Each Maker is responsible for all obligations represented by this note.

     When the text requires, singular nouns and pronouns include the plural.



SIDT, INC.


By: /s/ DOUGLAS P. BAKER
    ------------------------------------------
    Douglas P. Baker
    Vice President and Chief Financial Officer


                                    GUARANTY

     FOR VALUE RECEIVED, the undersigned, SI Diamond Technology, Inc., a Texas
corporation, ("Guarantor") absolutely and unconditionally guarantees payment of
this note according to its






<PAGE>   3
terms to the same extent as if Guarantor were maker of this note. Guarantor
waives all demand and all notices, including notice of intention to accelerate
the maturity, notice of acceleration of maturity, notice of nonpayment,
presentment for payment, protest, notice of protest, suit, and diligence.
Guarantor also waives any notice of and defense based on the extension of time
of payment or change in methods of payment and consent to all renewals,
extensions, and other adjustments in the manner of payment of this note. This
is a guaranty of payment and performance, not of collection, and it is an
agreement of guaranty, not of suretyship. Guarantor waives all requirements of
law, if any, to require that any action be brought against Maker before
resorting to this guaranty.

     Guarantor hereby agrees that its obligations under the terms of this
guaranty shall not be released, diminished, impaired, reduced, or affected by
the occurrence of any one or more of the following events: (a) the taking or
accepting of any other security or guaranty for any or all of the Guaranteed
Indebtedness; (b) any release, surrender, exchange, subordination, or loss of
any security at any time existing in connection with any or all of the
Guaranteed Indebtedness; (c) any partial release of the liability of Guarantor
hereunder, or, if there is more than one person and/or entity signing this
guaranty, the release of any one or more of them, hereunder; (d) the death,
insolvency, bankruptcy, disability, or lack of corporate power of Maker, any of
the undersigned, or any party at any time liable for the payment of any or all
of the Guaranteed Indebtedness, whether now existing or hereafter occurring;
(e) any renewal, extension and/or rearrangement of the payment of any or all of
the Guaranteed Indebtedness, either with or without notice to or consent of
Guarantor, or any adjustment, indulgence, forbearance, or compromise that may
be granted or given by Payee to Maker of Guarantor; (f) any neglect, delay,
omission, failure, or refusal of Payee to take or prosecute any action for the
collection of any of the Guaranteed Indebtedness or to foreclose or take or
prosecute any action in connection with any instrument or agreement evidencing
or securing all or any part of the Guaranteed Indebtedness; (g) any failure of
Payee to notify Guarantor of any renewal, extension, or assignment of the
Guaranteed Indebtedness or any part thereof, or the release of any security or
of any other action taken or refrained from being taken by Payee against Maker
or any new agreement between Payee and Maker, it being understood that Payee
shall not be required to give





<PAGE>   4
Guarantor any notice of any kind under any circumstances whatsoever with respect
to or in connection with the Guaranteed Indebtedness; (h) in the event that
Maker is a corporation, joint stock association, or partnership, or is hereafter
incorporated, the unenforceability of all or any part of the Guaranteed
Indebtedness against Maker by reason of the fact that the Guaranteed
Indebtedness exceeds the amount permitted by law, the act or creating the
Guaranteed Indebtedness, or any part thereof, is ultra vires, or the officers
creating same acted in excess of their authority; or (i) any payment by Maker to
Payee is held to constitute a preference under the bankruptcy laws or if for any
other reason Payee is required to refund such payment or pay the amount thereof
to someone else.



     This guaranty is for the benefit of Payee and Payee's representatives,
successors, and assigns, and in the event of an assignment of the Guaranteed
Indebtedness, or any part thereof, the rights and benefits hereunder, to the
extent applicable to the indebtedness so assigned, may be transferred with such
indebtedness. This guaranty is binding not only on Guarantor, but on Guarantor's
representatives, successors, and assigns, and if this guaranty is signed by more
than one person and/or entity then all of the obligations of Guarantor arising
herein shall be jointly and severally binding on each of the undersigned, and
their respective heirs, personal representatives, successors, and assigns.


     Date: September 3, 1999.


SI DIAMOND TECHNOLOGY, INC.


By: /s/ DOUGLAS P. BAKER
    ------------------------------------------
    Douglas P. Baker
    Vice President and Chief Financial Officer



Guarantor's Address:

3006 Longhorn Blvd., Ste. 107
Austin, Texas 78758




© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission