<PAGE>
NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THEY ARE EXERCISABLE HAVE
BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES
COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY,
MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM
THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN COMPLIANCE WITH
APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.

                          UNIVERSAL DISPLAY CORPORATION

                                     WARRANT
                                     -------

Warrant No. B-1                                           Dated: August 22, 2001

         Universal Display Corporation, a Pennsylvania corporation (the
"Company"), hereby certifies that, for value received, Strong River Investments,
Inc. or its registered assigns (the "Holder"), is entitled to purchase from the
Company up to a total of 78,740 shares of common stock, $.01 par value per share
(the "Common Stock"), of the Company (each such share, a "Warrant Share" and all
such shares, the "Warrant Shares") at an exercise price equal to $15.24 per
share (as adjusted from time to time as provided in Section 9, the "Exercise
Price"), at any time and from time to time from and after the earlier of (a)
August 22, 2004 and (b) the Second Closing Date (the earlier of such dates being
the "Commencement Date") and through and including August 22, 2006 (the
"Expiration Date"), and subject to the following terms and conditions.

         1. Definitions. In addition to the terms defined elsewhere in this
Warrant, capitalized terms that are not otherwise defined herein have the
meanings given to such terms in the Securities Purchase Agreement, dated as of
August 22, 2001, among the Company and the Purchasers identified therein (the
"Purchase Agreement").

         2. Registration of Warrant. The Company shall register this Warrant,
upon records to be maintained by the Company for that purpose (the "Warrant
Register"), in the name of the record Holder hereof from time to time. The
Company may deem and treat the registered Holder of this Warrant as the absolute
owner hereof for the purpose of any exercise hereof or any distribution to the
Holder, and for all other purposes, absent actual notice to the contrary.

         3. Registration of Transfers. Subject to Section 12 hereof, the Company
shall register the transfer of any portion of this Warrant in the Warrant
Register, upon surrender of this Warrant, with the Form of Assignment attached
hereto duly completed and signed, to the Transfer Agent or to the Company at its
address specified herein. Upon any such registration or transfer, a new warrant
to purchase Common Stock, in substantially the form of this Warrant (any such
new warrant, a "New Warrant"), evidencing the portion of this Warrant so
transferred shall be issued to the transferee and a New Warrant evidencing the



<PAGE>


remaining portion of this Warrant not so transferred, if any, shall be issued to
the transferring Holder. The acceptance of the New Warrant by the transferee
thereof shall be deemed the acceptance by such transferee of all of the rights
and obligations of a holder of a Warrant.

         4. Exercise and Duration of Warrants.


            (a) This Warrant shall be exercisable by the registered Holder at
any time and from time to time on or after the Commencement Date to and
including the Expiration Date. At 6:30 P.M., New York City time on the
Expiration Date, the portion of this Warrant not exercised prior thereto shall
be and become void and of no value; provided that, if the Closing Price on the
Expiration Date is greater than 102% of the Exercise Price on the Expiration
Date, then this Warrant shall be deemed to have been exercised in full (to the
extent not previously exercised) on a "cashless exercise" basis at 6:30 P.M. New
York City time on the Expiration Date.

            (b) Subject to Section 12 hereof, a Holder may exercise this Warrant
by delivering to the Company (i) an Exercise Notice, in the form attached
hereto, appropriately completed and duly signed; (ii) payment of the Exercise
Price for the number of Warrant Shares as to which this Warrant is being
exercised (which may take the form of a "cashless exercise" if so indicated in
the Exercise Notice); and (iii) this Warrant (or a New Warrant, as described in
Section 5(b)), unless the Holder is awaiting receipt of a New Warrant from the
Company pursuant to another provision hereof. The date such items are delivered
to the Company (as determined in accordance with the notice provisions hereof)
is an "Exercise Date".

            (c) In the event the Commencement Date shall not have occurred on or
before August 22, 2002, the Company may redeem this Warrant by paying $100.00 to
the Holder.

         5. Delivery of Warrant Shares.

            (a) Upon exercise of this Warrant, the Company shall promptly (but
in no event later than four Trading Days after the Exercise Date (the "Delivery
Date")) issue or cause to be issued and cause to be delivered to or upon the
written order of the Holder and in such name or names as the Holder may
designate, a certificate for the Warrant Shares issuable upon such exercise,
free of restrictive legends unless a registration statement covering the resale
of the Warrant Shares and naming the Holder as a selling stockholder thereunder
is not then effective and the Warrant Shares are not freely transferable without
volume restrictions pursuant to Rule 144 under the Securities Act. The Holder,
or any Person so designated by the Holder to receive Warrant Shares, shall be
deemed to have become holder of record of such Warrant Shares as of the Exercise
Date. The Company shall, upon request of the Holder, use its best efforts to
deliver Warrant Shares hereunder electronically through the Depository Trust
Corporation or another established clearing corporation performing similar
functions.

            (b) This Warrant is exercisable, either in its entirety or, from
time to time, for a portion of the number of Warrant Shares. If less than all of
the Warrant Shares which may be purchased under this Warrant are exercised at


                                       2
<PAGE>

any time, the Company shall issue or cause to be issued, at its expense, a New
Warrant evidencing the right to purchase the remaining number of Warrant Shares.

            (c) The Company's obligations to issue and deliver Warrant Shares in
accordance with the terms hereof are absolute and unconditional, irrespective of
any action or inaction by the Holder to enforce the same, any waiver or consent
with respect to any provision hereof, the recovery of any judgment against any
Person or any action to enforce the same, or any setoff, counterclaim,
recoupment, limitation or termination, or any breach or alleged breach by the
Holder or any other Person of any obligation to the Company or any violation or
alleged violation of law by the Holder or any other Person, and irrespective of
any other circumstance which might otherwise limit such obligation of the
Company to the Holder in connection with the issuance of Warrant Shares.

            (d) If the Company fails to deliver to the Holder such certificate
or certificates pursuant to this Section 5 by the Delivery Date, the Company
shall pay to the Holder, in cash, as liquidated damages and not as a penalty,
$5,000 for each Trading Day after the Delivery Date until such certificates are
delivered. Nothing herein shall limit the Holder's right to pursue actual
damages for the Company's failure to deliver certificates representing shares of
Common Stock upon exercise within the period specified herein and the Holder
shall have the right to pursue all remedies available to it at law or in equity
including, without limitation, a decree of specific performance and/or
injunctive relief. The exercise of any such rights shall not prohibit the Holder
from seeking to enforce damages pursuant to any other provision hereof or under
applicable law.

            (e) In addition to any other rights available to the Holder, if the
Company fails to deliver to the Holder such certificate or certificates pursuant
to this Section 5 by the Delivery Date, and if after such Delivery Date the
Holder purchases (in an open market transaction or otherwise) shares of Common
Stock to deliver in satisfaction of a sale by the Holder of the Underlying
Shares which the Holder anticipated receiving upon such conversion (a "Buy-In"),
then the Company shall pay in cash to the Holder (in addition to any remedies
available to or elected by the Holder) the amount by which (x) the Holder's
total purchase price (including brokerage commissions, if any) for the Common
Stock so purchased exceeds (y) the product of (1) the lesser of (A) the
aggregate number of shares of Common Stock that such Holder anticipated
receiving from the conversion at issue or (B) the number of shares of Common
Stock so purchased, multiplied by (2) the Exercise Price of the Common Stock on
the applicable Exercise Date, in which event the number of shares of Common
Stock that would have been issued had the Company timely complied with its
delivery requirements shall not be so issued. For example, if the Holder
purchases Common Stock having a total purchase price of $11,000 to cover a
Buy-In in connection with an attempted exercise of this Warrant with respect to
which the Exercise Price of the Underlying Shares on the applicable Exercise
Date multiplied by the number of Underlying Shares was equal to $2,000 under
clause (A) of the immediately preceding sentence, the Company shall be required
to pay the Holder $9,000. The Holder shall provide the Company written notice
indicating the amounts payable to the Holder in respect of the Buy-In.

            (f) The provisions of Sections 5(d) and 5(e) shall not apply to an
exercise under Section 4(a).


                                       3
<PAGE>

         6. Charges, Taxes and Expenses. Except as otherwise provided in this
Section 6, issuance of certificates for shares of Common Stock upon exercise of
this Warrant shall be made without charge to the Holder for any issue or
transfer tax, withholding tax, transfer agent fee or other incidental tax or
expense in respect of the issuance of such certificates, all of which taxes and
expenses shall be paid by the Company; provided, however, that the Company shall
not be required to pay any tax which may be payable in respect of any transfer
involved in the registration of any certificates for Warrant Shares or Warrants
in a name other than that of the Holder. The Holder shall be responsible for all
other tax liability that may arise as a result of holding or transferring this
Warrant or receiving Warrant Shares upon exercise hereof.

         7. Replacement of Warrant. If this Warrant is mutilated, lost, stolen
or destroyed, the Company shall issue or cause to be issued in exchange and
substitution for and upon cancellation hereof, or in lieu of and substitution
for this Warrant, a New Warrant, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and customary and
reasonable indemnity, if requested. Applicants for a New Warrant under such
circumstances shall also comply with such other reasonable regulations and
procedures and pay such other reasonable third-party costs as the Company may
prescribe.

         8. Reservation of Warrant Shares. The Company covenants that it will at
all times reserve and keep available out of the aggregate of its authorized but
unissued and otherwise unreserved Common Stock, solely for the purpose of
enabling it to issue Warrant Shares upon exercise of this Warrant as herein
provided, the number of Warrant Shares which are then issuable and deliverable
upon the exercise of this entire Warrant, free from preemptive rights or any
other contingent purchase rights of persons other than the Holder (taking into
account the adjustments and restrictions of Section 9). The Company covenants
that all Warrant Shares so issuable and deliverable shall, upon issuance and the
payment of the applicable Exercise Price in accordance with the terms hereof, be
duly and validly authorized, issued and fully paid and nonassessable.

         9. Certain Adjustments. The Exercise Price and number of Warrant Shares
issuable upon exercise of this Warrant are subject to adjustment from time to
time as set forth in this Section 9.

            (a) Stock Dividends and Splits. If the Company, at any time while
this Warrant is outstanding, (i) pays a stock dividend on its Common Stock or
otherwise makes a distribution on any class of capital stock that is payable in
shares of Common Stock, (ii) subdivides outstanding shares of Common Stock into
a larger number of shares, or (iii) combines outstanding shares of Common Stock
into a smaller number of shares, then in each such case the Exercise Price shall
be multiplied by a fraction of which the numerator shall be the number of shares
of Common Stock outstanding immediately before such event and of which the
denominator shall be the number of shares of Common Stock outstanding
immediately after such event. Any adjustment made pursuant to clause (i) of this
paragraph shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution,
and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall
become effective immediately after the effective date of such subdivision or
combination.








                                        4
<PAGE>

            (b) Pro Rata Distributions. If the Company, at any time while this
Warrant is outstanding, distributes to all holders of Common Stock (i) evidences
of its indebtedness, (ii) any security (other than a distribution of Common
Stock covered by the preceding paragraph), (iii) rights or warrants to subscribe
for or purchase any security, or (iv) any other asset (in each case,
"Distributed Property"), then in each such case the Exercise Price in effect
immediately prior to the record date fixed for determination of stockholders
entitled to receive such distribution shall be adjusted (effective on such
record date) to equal the product of such Exercise Price times a fraction of
which the denominator shall be such Exercise Price and of which the numerator
shall be such Exercise Price less the then fair market value of the Distributed
Property distributed in respect of one outstanding share of Common Stock, as
determined by the Company's independent certified public accountants that
regularly examine the financial statements of the Company (an "Appraiser"). In
such event, the Holder, after receipt of the determination by the Appraiser,
shall have the right to select an additional appraiser (which shall be a
nationally recognized accounting firm), in which case such fair market value
shall be deemed to equal the average of the values determined by each of the
Appraiser and such appraiser.

            (c) Fundamental Transactions. If, at any time while this Warrant is
outstanding, (i) the Company effects any merger or consolidation of the Company
with or into another Person, (ii) the Company effects any sale of all or
substantially all of its assets in one or a series of related transactions,
(iii) any tender offer or exchange offer (whether by the Company or another
Person) is completed pursuant to which holders of Common Stock are permitted to
tender or exchange their shares for other securities, cash or property, or (iv)
the Company effects any reclassification of the Common Stock or any compulsory
share exchange pursuant to which the Common Stock is effectively converted into
or exchanged for other securities, cash or property (in any such case, a
"Fundamental Transaction"), then the Holder shall have the right thereafter to
receive, upon exercise of this Warrant, the same amount and kind of securities,
cash or property as it would have been entitled to receive upon the occurrence
of such Fundamental Transaction if it had been, immediately prior to such
Fundamental Transaction, the holder of the number of Warrant Shares then
issuable upon exercise in full of this Warrant (the "Alternate Consideration").
The aggregate Exercise Price for this Warrant will not be affected by any such
Fundamental Transaction, but the Company shall apportion such aggregate Exercise
Price among the Alternate Consideration in a reasonable manner reflecting the
relative value of any different components of the Alternate Consideration. If
holders of Common Stock are given any choice as to the securities, cash or
property to be received in a Fundamental Transaction, then the Holder shall be
given the same choice as to the Alternate Consideration it receives upon any
exercise of this Warrant following such Fundamental Transaction. At the Holder's
request, any successor to the Company or surviving entity in such Fundamental
Transaction shall issue to the Holder a new warrant consistent with the
foregoing provisions and evidencing the Holder's right to purchase the Alternate
Consideration for the aggregate Exercise Price upon exercise thereof. The terms
of any agreement pursuant to which a Fundamental Transaction is effected shall
include terms requiring any such successor or surviving entity to comply with
the provisions of this paragraph (c) and insuring that the Warrant (or any such
replacement security) will be similarly adjusted upon any subsequent transaction
analogous to a Fundamental Transaction. If any Fundamental Transaction
constitutes or results in a Change of Control and if upon the happening of such
Change of Control (A) the Company or its successors is not traded on the New




                                       5
<PAGE>


York Stock Exchange, the American Stock Exchange or the NASDAQ National Market,
or (B) the Company or its successor, as the case may be, for the 90 day period
prior thereto (1) had an average daily trading volume of its common stock of
less than 100,000 shares or (2) had an average daily Closing Price of its common
stock of less than $10 per share, then at the request of the Holder delivered
before the 90th day after such Fundamental Transaction, the Company (or any such
successor or surviving entity) will purchase the Warrant from the Holder for a
purchase price, payable in cash within five Trading Days after such request (or,
if later, on the effective date of the Fundamental Transaction), equal to the
Black Scholes value of the remaining unexercised portion of this Warrant on the
date of such request.

            (d) Subsequent Equity Sales.


                  (i) If, at any time while this Warrant is outstanding, the
         Company issues additional shares of Common Stock or rights, warrants,
         options or other securities or debt convertible, exercisable or
         exchangeable for shares of Common Stock or otherwise entitling any
         Person to acquire shares of Common Stock (collectively, "Common Stock
         Equivalents" and together with Common Stock hereinafter called the "CS
         Securities") at an effective price per share of Common Stock (the
         "Effective Price") less than the Exercise Price, then the Exercise
         Price shall be reduced to equal the product of (A) the Exercise Price
         in effect immediately prior to such issuance of Common Stock or Common
         Stock Equivalents times (B) a fraction, the numerator of which is the
         sum of (1) the number of shares of Common Stock outstanding immediately
         prior to such issuance, plus (2) the number of shares of Common Stock
         which the aggregate Effective Price of the Common Stock issued (or
         deemed to be issued) would purchase at the Exercise Price, and the
         denominator of which is the aggregate number of shares of Common Stock
         outstanding or deemed to be outstanding immediately after such
         issuance. For purposes of the foregoing adjustment, in connection with
         any issuance of any Common Stock Equivalents, (x) the maximum number of
         shares of Common Stock potentially issuable at any time upon
         conversion, exercise or exchange of such Common Stock Equivalents (the
         "Deemed Number") shall be deemed to be outstanding upon issuance of
         such Common Stock Equivalents, (y) the Effective Price applicable to
         such Common Stock shall equal the minimum dollar value of consideration
         payable to the Company to purchase such Common Stock Equivalents and to
         convert, exercise or exchange them into Common Stock, divided by the
         Deemed Number, and (z) no further adjustment shall be made to the
         Exercise Price upon the actual issuance of Common Stock upon
         conversion, exercise or exchange of such Common Stock Equivalents.
         However, upon termination or expiration of any Common Stock Equivalents
         the issuance of which resulted in an adjustment to the Exercise Price
         pursuant to this paragraph, the Exercise Price shall be recomputed to
         equal the price it would have been had the adjustments in this
         paragraph been made, at the time of issuance of such Common Stock
         Equivalents, only with respect to that number of shares of the Common
         Stock actually issued upon conversion, exercise or exchange of such
         Common Stock Equivalents and at the Effective Prices actually paid in
         connection therewith.


                                       6
<PAGE>

                  (ii) If, at any time while this Warrant is outstanding, the
         Company or any Subsidiary has outstanding any Common Stock Equivalents
         with an Effective Price that floats or resets or otherwise varies or is
         subject to adjustment based on market prices of the Common Stock (a
         "Floating Price Security"), then for purposes of applying the preceding
         paragraph in connection with any subsequent exercise, the Effective
         Price will be determined separately on each Exercise Date and will be
         deemed to equal the lowest Effective Price at which any holder of such
         Floating Price Security is entitled to acquire shares of Common Stock
         on such Exercise Date (regardless of whether any such holder actually
         acquires any shares on such date).

                  (iii) Notwithstanding the foregoing, no adjustment will be
         made under this Section 9(d) in respect of (a) any grant of options to
         employees, officers, directors or consultants of the Company pursuant
         to any stock option plan duly adopted by the Company's board of
         directors (provided, that the number of shares of Common Stock which
         are the subject of any such plan may not exceed 2,800,000, subject to
         annual increases of up to 40% of the shares authorized under such plans
         during the immediately preceding year), (b) in respect of the issuance
         of CS Securities upon exercise of any such options, (c) the issuance of
         CS Securities under the PPG Agreement or the Motorola Agreement, (d) up
         to 1,000,000 CS Securities issued in connection with any contractual
         strategic alliances approved by the Company's Board of Directors, (e)
         the issuance of any CS Securities representing or convertible into up
         to 50,000 shares of Common Stock in any single transaction; provided
         that this subsection (e) shall only apply to the first 50,000 shares in
         the aggregate issued in any consecutive 12 month period and 150,000 in
         the aggregate, (f) CS Securities issued or issuable pursuant to the
         Notes, Preferred Stock, Warrants or any other Transaction Document or
         pursuant to the anti-dilution provisions thereof, (g) any CS Securities
         issuable upon the exercise of, or pursuant to the anti-dilution
         provisions contained within, any options, restricted stock awards,
         preferred stock or warrants outstanding on the date hereof (but not to
         the extent amended hereafter) all of which are set forth on Schedule 1
         hereto, or (h) any Common Stock issued upon the conversion of exercise
         of any Common Stock Equivalents outstanding as of the date hereof (but
         not to the extent amended hereafter) all of which are set forth on
         Schedule 2 hereto.

            (e) Special Adjustment. Notwithstanding anything to the contrary
that may be contained herein, if at any time on or after the date hereof, the
Holder has pursuant to the Notes converted in excess of $1,500,000 of principal
amount of such Notes on account of the Company having delivered a "Company
Conversion Notice" pursuant to such Note, then upon each such conversion in
excess of $1,500,000 (a "Subsequent Conversion") the Exercise Price shall be
reduced (but not increased) to 110% of the Conversion Price in effect for each
such Subsequent Conversion.

            (f) Number of Warrant Shares. Simultaneously with any adjustment to
the Exercise Price pursuant to paragraphs (a) or (b) of this Section, the number
of Warrant Shares that may be purchased upon exercise of this Warrant shall be
increased or decreased, as the case may be, proportionately, so that after such
adjustment the aggregate Exercise Price payable hereunder for the increased


                                       7
<PAGE>
number of Warrant Shares shall be the same as the aggregate Exercise Price in
effect immediately prior to such adjustment.

            (g) Calculations. All calculations under this Section 9 shall be
made to the nearest cent or the nearest 1/100th of a share, as applicable. The
number of shares of Common Stock outstanding at any given time shall not include
shares owned or held by or for the account of the Company; provided, however,
the provisions of this Section 9 shall apply to any sale, issuance, distribution
or disposition of any such shares by the Company.

            (h) Notice of Adjustments. Upon the occurrence of each adjustment
pursuant to this Section 9, the Company at its expense will promptly compute
such adjustment in accordance with the terms of this Warrant and prepare a
certificate setting forth such adjustment, including a statement of the adjusted
Exercise Price and adjusted number or type of Warrant Shares or other securities
issuable upon exercise of this Warrant (as applicable), describing the
transactions giving rise to such adjustments and showing in detail the facts
upon which such adjustment is based. Upon written request, the Company will
promptly deliver a copy of each such certificate to the Holder and to the
Company's Transfer Agent.

            (i) Notice of Corporate Events. If the Company (i) declares a
dividend or any other distribution of cash, securities or other property in
respect of its Common Stock, including without limitation any granting of rights
or warrants to subscribe for or purchase any capital stock of the Company or any
Subsidiary, (ii) authorizes or approves, enters into any agreement contemplating
or solicits stockholder approval for any Fundamental Transaction or (iii)
authorizes the voluntary dissolution, liquidation or winding up of the affairs
of the Company; then in each case, the Company shall on the earlier of the day
on which the Company (A) publicly announces such proposed action, or (B)
notifies its shareholders of such proposed action deliver to the Holder a notice
describing the material terms and conditions of such transaction, and the
Company will take all steps reasonably necessary in order to insure that the
Holder is given the practical opportunity to exercise this Warrant prior to such
time so as to participate in or vote with respect to such transaction; provided,
however, that the failure to deliver such notice or any defect therein shall not
affect the validity of the corporate action required to be described in such
notice.

         10. Payment of Exercise Price. The Holder shall pay the Exercise Price
in one of the following

manners:

             (a) Cash Exercise. The Holder may deliver immediately available
funds; or


             (b) Cashless Exercise. The Holder may satisfy its obligation to pay
the Exercise Price through a "cashless exercise," in which event the Company
shall issue to the Holder the number of Warrant Shares determined as follows:

                               X = Y [(A-B)/A]

             where:

                               X = the number of Warrant Shares to be issued
                               to the Holder.


                                       8
<PAGE>
                               Y = the number of Warrant Shares with
                               respect to which this Warrant is being
                               exercised.

                               A = the average of the Closing Prices for
                               the five Trading Days immediately prior to
                               (but not including) the Exercise Date.

                               B = the Exercise Price.

For purposes of Rule 144 promulgated under the Securities Act, it is intended,
understood and acknowledged that the Warrant Shares issued in a cashless
exercise transaction shall be deemed to have been acquired by the Holder, and
the holding period for the Warrant Shares shall be deemed to have commenced, on
the date this Warrant was originally issued pursuant to the Purchase Agreement.

         11. Limitation on Exercise. (a) Notwithstanding anything to the
contrary contained herein, the number of shares of Common Stock that may be
acquired by the Holder upon any exercise of this Warrant (or otherwise in
respect hereof) shall be limited to the extent necessary to insure that,
following such exercise (or other issuance), the total number of shares of
Common Stock then beneficially owned by such Holder and its Affiliates and any
other Persons whose beneficial ownership of Common Stock would be aggregated
with the Holder's for purposes of Section 13(d) of the Exchange Act, does not
exceed 4.999% (the "Maximum Percentage") of the total number of issued and
outstanding shares of Common Stock (including for such purpose the shares of
Common Stock issuable upon such exercise). For such purposes, beneficial
ownership shall be determined in accordance with Section 13(d) of the Exchange
Act and the rules and regulations promulgated thereunder. Each delivery of an
Exercise Notice hereunder will constitute a representation by the Holder that it
has evaluated the limitation set forth in this paragraph and determined that
issuance of the full number of Warrant Shares requested in such Exercise Notice
is permitted under this paragraph. The Company's obligation to issue shares of
Common Stock in excess of the limitation referred to in this Section shall be
suspended (and shall not terminate or expire notwithstanding any contrary
provisions hereof) until such time, if any, as such shares of Common Stock may
be issued in compliance with such limitation. By written notice to the Company,
the Holder may waive the provisions of this Section or increase or decrease the
Maximum Percentage to any other percentage specified in such notice, but (i) any
such waiver or increase will not be effective until the 61st day after such
notice is delivered to the Company, and (ii) any such waiver or increase or
decrease will apply only to the Holder and not to any other holder of Warrants.

             (b) Notwithstanding anything to the contrary contained herein, this
Warrant may not be exercised to the extent such exercise would result in the
Holder, together with any affiliate thereof, beneficially owning (as determined
in accordance with Section 13(d) of the Exchange Act and the rules promulgated
thereunder) in excess of 9.999% of the then issued and outstanding shares of
Common Stock, including shares issuable upon exercise of this Warrant after
application of this Section. Since the Holder will not be obligated to report to
the Company the number of shares of Common Stock it may hold at the time of an
exercise hereunder, unless the conversion at issue would result in the issuance
of shares of Common Stock in excess of 9.999% of the then outstanding shares of


                                       9
<PAGE>

Common Stock without regard to any other shares which may be beneficially owned
by the Holder or an affiliate thereof, the Holder shall have the authority and
obligation to determine whether the restriction contained in this Section 11(b)
will limit any particular conversion hereunder and to the extent that the Holder
determines that the limitation contained in this Section 11(b) applies, the
determination of the extent to which this Warrant is convertible shall be the
responsibility and obligation of the Holder. If the Holder has delivered an
Exercise Notice for a number of Warrant Shares that, without regard to any other
shares that the Holder or its affiliates may beneficially own, would result in
the issuance in excess of the permitted amount hereunder, the Company shall
notify the Holder of this fact and shall honor the Exercise Notice to the extent
of the maximum number of Warrant Shares permitted to be purchased at such
Exercise Date pursuant to the provisions of this Section 11(b).

         12. Exercise or Transfer Without Registration. If, at the time of the
surrender of this Warrant in connection with any exercise, transfer, or exchange
of this Warrant, this Warrant (or, in the case of any exercise, the shares of
Common Stock issuable hereunder), shall not be registered under the Securities
Act and under applicable state securities or blue sky laws, the Company may
require, as a condition of allowing such exercise, transfer, or exchange, (i)
that the Holder or transferee of this Warrant, as the case may be, furnish to
the Company a written opinion of counsel that is reasonably acceptable to the
Company to the effect that such exercise, transfer or exchange may be made
without registration under the Securities Act and under applicable state
securities or blue sky laws, (ii) that the Holder or transferee execute and
deliver to the Company an investment letter in form and substance acceptable to
the Company and (iii) that the transferee is an "accredited investor" as defined
in Rule 501(a) promulgated under the Securities Act; provided that no such
opinion, letter or status as an "accredited investor" shall be required in
connection with a transfer pursuant to Rule 144 under the Securities Act.

         13. Fractional Shares. The Company shall not be required to issue or
cause to be issued fractional Warrant Shares on the exercise of this Warrant. If
any fraction of a Warrant Share would, except for the provisions of this
Section, be issuable upon exercise of this Warrant, the Company shall pay an
amount in cash equal to the average of the Closing Prices of the Common Stock
for the five Trading Days immediately prior to (but not including) the Exercise
Date multiplied by such fraction; provided that, unless the Holder requests
otherwise, no payment shall be required pursuant to this sentence until the
aggregate amount payable exceeds $1,000, at which time all previously deferred
payments shall be made.

         14. Notices. Any and all notices or other communications or deliveries
hereunder (including without limitation any Exercise Notice) shall be in writing
and shall be deemed given and effective on the earliest of (i) the date of
transmission, if such notice or communication is delivered via facsimile at the
facsimile number specified in this Section prior to 6:30 p.m. (New York City
time) on a Trading Day, (ii) the next Trading Day after the date of
transmission, if such notice or communication is delivered via facsimile at the
facsimile number specified in this Section on a day that is not a Trading Day or
later than 6:30 p.m. (New York City time) on any Trading Day or (iii) the
Trading Day following the date of mailing, if sent by nationally recognized
overnight courier service. The addresses for such communications shall be: (i)
if to the Company, to 375 Phillips Boulevard, Ewing, New Jersey 08618;


                                       10
<PAGE>


facsimile: (609) 671-0995; attention Sidney Rosenblatt, Chief Financial Officer,
or (ii) if to the Holder, to the address or facsimile number appearing on the
Warrant Register or such other address or facsimile number as the Holder may
provide to the Company in accordance with this Section.

         15. Warrant Agent. The Company shall serve as warrant agent under this
Warrant. Upon 30 days' notice to the Holder, the Company may appoint a new
warrant agent. Any corporation into which the Company or any new warrant agent
may be merged or any corporation resulting from any consolidation to which the
Company or any new warrant agent shall be a party or any corporation to which
the Company or any new warrant agent transfers substantially all of its
corporate trust or shareholders services business shall be a successor warrant
agent under this Warrant without any further act. Any such successor warrant
agent shall promptly cause notice of its succession as warrant agent to be
mailed (by first class mail, postage prepaid) to the Holder at the Holder's last
address as shown on the Warrant Register.

         16. Miscellaneous.


             (a) This Warrant shall be binding on and inure to the benefit of
the parties hereto and their respective successors and assigns. Subject to the
preceding sentence, nothing in this Warrant shall be construed to give to any
Person other than the Company and the Holder any legal or equitable right,
remedy or cause of action under this Warrant. This Warrant may be amended only
in writing signed by the Company and the Holder.

             (b) The corporate laws of the Commonwealth of Pennsylvania shall
govern all issues concerning the relative rights of the Company and its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Warrant shall be governed by and
construed and enforced in accordance with the internal laws of the State of New
York, without regard to the principles of conflicts of law thereof. The Company
and the Holder hereby irrevocably submit to the exclusive jurisdiction of the
state and federal courts sitting in the City of New York, borough of Manhattan,
for the adjudication of any dispute hereunder or in connection herewith or with
any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, or that
such suit, action or proceeding is improper. Each of the Company and the Holder
hereby irrevocably waives personal service of process and consents to process
being served in any such suit, action or proceeding by receiving a copy thereof
sent to the Company at the address in effect for notices to it under this
instrument and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.

             (c) The headings herein are for convenience only, do not constitute
a part of this Warrant and shall not be deemed to limit or affect any of the
provisions hereof.

             (d) In case any one or more of the provisions of this Warrant shall
be invalid or unenforceable in any respect, the validity and enforceability of
the remaining terms and provisions of this Warrant shall not in any way be
affected or impaired thereby and the parties will attempt in good faith to agree


                                       11
<PAGE>

upon a valid and enforceable provision which shall be a commercially reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Warrant.

             (e) This Warrant shall not entitle the Holder to any voting or
other rights as a stockholder of the Company, except to the extent the Holder
has purchased any Warrant Shares.



                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK,
                             SIGNATURE PAGE FOLLOWS]






                                       12
<PAGE>


         IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed by its authorized officer as of the date first indicated above.


                          UNIVERSAL DISPLAY CORPORATION


                          By:   /s/ Sidney D. Rosenblatt
                                ----------------------------
                          Name: Sidney D. Rosenblatt
                          Title: Chief Financial Officer



                                       13
<PAGE>




                             FORM OF EXERCISE NOTICE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the foregoing Warrant)

To: Universal Display Corporation

The undersigned holder hereby exercises the right to purchase _________________
of the shares of Common Stock ("Warrant Shares") of Universal Display
Corporation, a Pennsylvania corporation (the "Company"), evidenced by Warrant
No. B-1 issued by the Company to the undersigned (the "Warrant"). Capitalized
terms used herein and not otherwise defined have the respective meanings set
forth in the Warrant.

         1. Form of Exercise Price. The Holder intends that payment of the
            Exercise Price shall be made as (check one):

                 ____________     "Cash Exercise" under Section 10(a)

                 ____________     "Cashless Exercise" under Section 10(b)

         2. Payment of Exercise Price. If the holder has elected a Cash
            Exercise, the holder shall pay the sum of $___________________ to
            the Company in accordance with the terms of the Warrant.

         3. Delivery of Warrant Shares. The Company shall deliver to the holder
            __________ Warrant Shares in accordance with the terms of the
            Warrant.

If the number of shares of Common Stock issuable upon this exercise shall not be
all of the shares of Common Stock which the undersigned is entitled to purchase
in accordance with the enclosed Warrant, the undersigned requests that a New
Warrant (as defined in the Warrant) evidencing the right to purchase the
remaining shares of Common Stock be issued in the name of and delivered to
(please print name and address):



Dated:   _______________, ____                Name of Holder:

                                              (Print)
                                                     --------------------------

                                              By:
                                                 ------------------------------
                                              Name:
                                                   ----------------------------
                                              Title:
                                                    ---------------------------

                                              (Signature must conform in all
                                              respects to name of holder as
                                              specified on the face of the
                                              Warrant)


<PAGE>


                               FORM OF ASSIGNMENT

         [To be completed and signed only upon transfer of Warrant]

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________________________ the right represented by the within
Warrant to purchase ____________ shares of Common Stock of Universal Display
Corporation to which the within Warrant relates and appoints ________________
attorney to transfer said right on the books of Universal Display Corporation
with full power of substitution in the premises.

Dated:   _______________, ____


                                              ---------------------------------


                                              (Signature must conform in all
                                              respects to name of holder as
                                              specified on the face of the
                                              Warrant)


                                              ---------------------------------
                                              Address of Transferee

                                              ---------------------------------

                                              ---------------------------------



In the presence of:


--------------------------