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                                                                   EXHIBIT 10.17

                         FULL-RECOURSE PROMISSORY NOTE


Loan Amount: $20,000
Interest Rate: 4.83% per year
Date of Loan: April 11, 2001


     FOR VALUE RECEIVED, the undersigned Borrower promises to pay to Tvia, Inc.
("Lender"), at its principal offices at 4001 Burton Drive, Santa Clara,
California, 95054, the principal sum of $20,000 upon the terms and conditions
set forth below.

1.   Term. The entire principal balance of this Promissory Note (this "Note"),
     together with all accrued and unpaid interest thereon, shall be due and
     payable on or at anytime before December 31, 2001.

2.   Interest. Interest on the outstanding principal balance hereunder shall
     accrue at the rate of 4.83% per year, compounded monthly.

3.   Prepayment. Prepayment of principal and interest may be made at any time
     without penalty.

4.   Purpose of Note. The Borrower acknowledges that the purpose of the loan
     evidenced by this Note is to provide funds for the Borrower to pay the
     taxes incurred upon the Borrower's purchase of common stock of the Lender
     pursuant to the terms of one or more Notices of Exercise and Stock Option
     Agreement(s) between the parties (the "Stock Option Agreement").

5.   Security. Payment of this Note is secured by a Pledge and Security
     Agreement which is attached to this Note as Exhibit A and which is hereby
     incorporated by reference. The Borrower, however, shall remain personally
     liable for payment of this Note, and assets of the Borrower, in addition to
     the collateral under the Pledge and Security Agreement, may be applied to
     the satisfaction of the Borrower's obligations under this Note.

6.   Acceleration of Due Date: The entire unpaid principal balance of this Note,
     together with all accrued and unpaid interest thereon, shall, at the
     election of Lender, become immediately due and payable upon the occurrence
     of any of the following, irrespective of the payment date set forth in
     Paragraph 1 of this Note:

     (a)  The failure of the Borrower to pay when due the principal balance and
          interest on this Note and the continuation of such default for more
          than 30 days.

     (b)  Any failure on the part of Borrower to perform or observe any of his
          or her obligations under the Pledge and Security Agreement or any
          other security instrument which secures this Note, as and when
          performance is due.

     (c)  On such date as Borrower ceases to be employed by the Lender.

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     (d)  If at any time Borrower shall admit in writing his or her inability to
          pay debts as they become due, or shall make any assignment for the
          benefit of any creditors, or shall file a petition seeking any
          reorganization, arrangement, composition, readjustment or similar
          release under any present or future statute, law or regulation, or on
          the filing or commencement of any petition, action, case or
          proceeding, voluntary or involuntary, under any state or federal law
          regarding bankruptcy or insolvency.

7.   Collection Costs Borne by Borrower. If action is instituted to collect this
     Note, the Borrower agrees to pay all costs and expenses, including without
     limitation reasonable attorneys' fees, incurred in connection with such
     action.

8.   Waiver. No delay or omission on the part of Lender in exercising any right
     under this Note or under the Pledge and Security Agreement or any other
     security agreement given to secure this Note shall operate as a waiver of
     such right or of any other right under this Note. Any waiver of any term of
     this Note, the Pledge and Security Agreement or of any of the obligations
     secured thereby must be made in writing and signed by a duly authorized
     officer of the Lender. Borrower hereby waives presentment for payment,
     demand, notice of demand and of dishonor and nonpayment of this Note,
     notice of intention to accelerate the maturity of this Note, protest and
     notice of protest, diligence in collecting, and the bringing of suit
     against any other party.

9.   Maximum Interest Payable. All agreements between the Borrower and the
     Lender, whether now existing or subsequently arising and whether written or
     oral, are limited so that in no contingency, whether by reason of
     acceleration of the maturity of the Note or otherwise, shall the interest
     contracted for, charged, received, paid or agreed to be paid to the Lender
     exceed the maximum amount permissible under applicable law. If, for any
     reason, interest would otherwise be payable to the Lender in excess of the
     maximum lawful amount, the interest payable to Lender shall be reduced to
     the maximum amount permitted under applicable law; and if for any reason
     the Lender shall ever receive anything of value deemed interest by
     applicable law in excess of the maximum lawful amount, an amount equal to
     any excessive interest shall be applied to the reduction of the principal
     under this Note and not to the payment of interest, or if such excessive
     interest exceeds the unpaid balance of principal under the Note, such
     excess shall be refunded to the Borrower. All interest paid or agreed to be
     paid to the Lender shall, to the extent permitted by applicable law, be
     amortized, prorated, allocated, and spread throughout the full period until
     payment in full of the principal (including the period of any renewal or
     extension) so that the interest for such full period shall not exceed the
     maximum amount permitted by applicable law. This paragraph shall control
     all agreements between the Borrower and the Lender.

10.  Conflicting Agreements. In the event of any inconsistencies between the
     terms of this Note and the terms of any other document related to the loan
     evidenced by the Note, the terms of this Note shall prevail.

11.  Governing Law. The Note shall be governed by the laws of the State of
     California and shall be construed in accordance with such laws,
     irrespective of its choice of law principles.

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Borrower's Printed Name:   JACK GUEDJ
                         --------------

Borrower's Signature:    /S/ JACK GUEDJ
                         --------------

LENDER: TVIA, INC.

By /S/ Michael Hoberg
   ------------------------------

Its             VP-CFO
   ------------------------------


     I, Patricia Guedj, the spouse of Borrower, do hereby consent to the
borrowing by the Borrower of the loan evidenced by this Note on the terms and
conditions set forth in this Note and to pledge of stock under the Pledge and
Security Agreement (attached to this Note as Exhibit B) and any extensions,
modifications or amendments thereto, as security for the obligations of the
Borrower under this Note.


/S/ Patricia Guedj
---------------------------------
       Spouse's Signature

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                                   EXHIBIT A

                         PLEDGE AND SECURITY AGREEMENT

     THIS PLEDGE AND SECURITY AGREEMENT is made as of April 11, 2001, between
the Borrower and Tvia, Inc. (the "Corporation").

     WHEREAS, the Corporation has loaned to the Borrower the sum of $20,000
which Borrower has used to pay taxes on the purchase of shares of common stock
of the Corporation pursuant to the terms of one or more Notices of Exercise and
Stock Option Agreement(s) between the parties (the "Stock"), and Borrower has
signed a promissory note (the "Note"); and

     WHEREAS, the Borrower has agreed to pledge the Stock with the Corporation
as security for the payment of the Note.

     NOW, THEREFORE, the parties agree as follows:

1.   The Borrower delivers the Corporation certificates for the Stock, together
     with two Assignments Separate from Certificate (attached as Exhibit B)
     signed by the Borrower. The Borrower pledges the Stock as security for the
     payment of the Note. In the event of default in payment of the Note, the
     Borrower appoints the Corporation as the Borrower's true and lawful
     attorney to take such action as may be necessary or appropriate to cause
     the Stock to be transferred into the name of the Corporation, or to any
     Borrower of the Stock.

2.   The Corporation agrees to hold the Stock as security for the payment of the
     Note and interest under the Note, and the Corporation shall not at any time
     dispose of or encumber the Stock except as otherwise in this Agreement.

3.   At all times while the Corporation is holding the Stock as security, the
     Corporation shall (a) collect all dividends declared on the Stock and shall
     credit such dividends against principal and interest of the Note, as part
     payment, and (b) collect and hold any other securities and/or other
     property distributed on account of the Stock, all of which shall be pledged
     to the Corporation under this Agreement.

4.   While the Corporation holds the Stock as security under this agreement, the
     Borrower shall have the right to vote the Stock at all meetings of the
     stockholders of the Corporation, so long as the Borrower is not in default
     in the performance of any of the terms of this Agreement, or in the
     payments due under the Note.

5.   Upon repayment of the balance of the Note and all interest and other
     charges due, the Corporation shall deliver to the Borrower the certificates
     for the Stock, and the Assignment forms, provided that if at such time any
     of the shares of Stock are subject to a Repurchase Option in favor of the
     Corporation pursuant to an applicable common stock purchase agreement or
     stock option agreement, then in such event the Corporation shall deliver
     such certificate to the escrow agent.

6.   In the event the Borrower fails to perform any of the terms of this
     Agreement, or fails to make payments when due under the Note as required,
     the Corporation shall have all the

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     rights and remedies of a creditor and secured party at law and in equity,
     including the rights and remedies provided under the California Uniform
     Commercial Code, and without limiting the foregoing, the Corporation may,
     after then days' prior written notice to the Borrower by certified mail at
     the Borrower's residence or business address, sell any or all of the Stock
     in such manner and for such price as the Corporation may determine. Out of
     the proceeds of such sale, the Corporation may retain an amount sufficient
     to pay the principal and interest then due on the Note, together with
     expenses of the sale and reasonable attorneys' fees, and the Corporation
     shall pay the balance of the proceeds, if any, to the Borrower. At any bona
     fide sale, which qualifies as a public sale under the California Uniform
     Commercial Code, the Corporation may (if the Corporation is the highest
     bidder) purchase all or any part of the Stock at such price as the
     Corporation deems proper. Borrower shall be liable for any deficiency
     remaining following exercise by the Corporation of its rights under this
     agreement.

7.   Provided the Borrower has not failed to perform on a timely basis any of
     the Borrower's obligations under the Note or this agreement, the
     Corporation will release the Stock from pledge upon payment in full of the
     Note plus all accrued but unpaid interest, subject to the terms of any
     applicable common stock purchase agreement or stock option agreement.

8.   This Agreement shall be governed by and construed in accordance with the
     laws of the State of California without regard to its choice of law
     principles.

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                                   EXHIBIT B

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

     FOR VALUE RECEIVED __________________________________ hereby sells, assigns
and transfers unto _______________________________________ (______) shares of
the Common Stock of ______________________________________________________ (the
"Company"), standing in _______________________ name on the books of the Company
represented by Certificate No. _________________ herewith and hereby irrevocably
constitutes and appoints ____________________________________________ Attorney
to transfer the Stock on the books of the Company with full power of
substitution in the premises.

     Dated: _______________, _____.


                                                  /S/ JACK GUEDJ
                                        _______________________________________
                                        Purchaser's Signature

INSTRUCTIONS: PLEASE DO NOT FILL IN ANY BLANKS OTHER THAN THE SIGNATURE LINE.
THE PURPOSE OF THIS ASSIGNMENT IS TO ENABLE THE COMPANY TO EXERCISE ITS
"REPURCHASE OPTION" SET FORTH IN THE STOCK PURCHASE OR STOCK OPTION AGREEMENT
WITHOUT REQUIRING ADDITIONAL SIGNATURES ON THE PART OF PURCHASER.

                                      B-1