Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Hack Michael G
 2. Date of Event Requiring Statement (Month/Day/Year)
01/01/2010		 3. Issuer Name and Ticker or Trading Symbol
UNIVERSAL DISPLAY CORP \PA\ [PANL]
(Last)
(First)
(Middle)
375 PHILLIPS BLVD.		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP Strategic Product Develop
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

EWING, NJ 08618		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 10,445 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) 02/05/2001 02/05/2011 Common Stock 1,000 $ 10.38 D  
Employee Stock Option (right to buy) 03/30/2001 03/30/2011 Common Stock 12,500 $ 10.3125 D  
Employee Stock Option (right to buy) 11/18/2002 11/18/2012 Common Stock 500 $ 9.94 D  
Employee Stock Option (right to buy) 06/16/2003 06/16/2013 Common Stock 250 $ 9.6 D  
Employee Stock Option (right to buy) 09/15/2003 09/15/2013 Common Stock 500 $ 9.21 D  
Employee Stock Option (right to buy) 12/23/2003 12/23/2013 Common Stock 15,000 $ 13.92 D  
Employee Stock Option (right to buy) 04/20/2004 04/20/2014 Common Stock 250 $ 13.28 D  
Employee Stock Option (right to buy) 06/15/2004 06/15/2014 Common Stock 250 $ 10.62 D  
Employee Stock Option (right to buy) 11/23/2004 11/23/2014 Common Stock 250 $ 10.07 D  
Employee Stock Option (right to buy) 01/18/2005 01/18/2015 Common Stock 7,000 $ 8.14 D  
Employee Stock Option (right to buy) 12/30/2005 12/30/2015 Common Stock 20,000 $ 10.51 D  
Employee Stock Option (right to buy) 06/20/2006 06/20/2016 Common Stock 750 $ 12.4 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Hack Michael G
375 PHILLIPS BLVD.
EWING, NJ 08618		       VP Strategic Product Develop  

Signatures

/s/ Michael G. Hack 01/05/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Of these, 9,773 shares are subject to vesting restrictions, with 2,075 shares vesting on January 6, 2010, 2,458 shares vesting on January 9, 2010, 2,075 shares vesting on January 6, 2011, 1,090 shares vesting on January 9, 2011, and 2,075 shares vesting on January 6, 2012.

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