<SEC-DOCUMENT>0001209191-21-018958.txt : 20210309
<SEC-HEADER>0001209191-21-018958.hdr.sgml : 20210309
<ACCEPTANCE-DATETIME>20210309161719
ACCESSION NUMBER:		0001209191-21-018958
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210302
FILED AS OF DATE:		20210309
DATE AS OF CHANGE:		20210309

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mahon Janice K
		CENTRAL INDEX KEY:			0001423446

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12031
		FILM NUMBER:		21726008

	MAIL ADDRESS:	
		STREET 1:		375 PHILLIPS BLVD.
		STREET 2:		375 PHILLIPS BLVD.
		CITY:			EWING
		STATE:			NJ
		ZIP:			08618

	FORMER NAME:	
		FORMER CONFORMED NAME:	DuFour Janice M
		DATE OF NAME CHANGE:	20170213

	FORMER NAME:	
		FORMER CONFORMED NAME:	Mahon Janice K
		DATE OF NAME CHANGE:	20080110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNIVERSAL DISPLAY CORP \PA\
		CENTRAL INDEX KEY:			0001005284
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPONENTS & ACCESSORIES [3670]
		IRS NUMBER:				232372688
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		375 PHILLIPS BOULEVARD
		CITY:			EWING
		STATE:			NJ
		ZIP:			08618
		BUSINESS PHONE:		6096710980

	MAIL ADDRESS:	
		STREET 1:		375 PHILLIPS BOULEVARD
		STREET 2:		375 PHILLIPS BOULEVARD
		CITY:			EWING
		STATE:			NJ
		ZIP:			08618
</SEC-HEADER>
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            <officerTitle>VP of Tech Commercialization</officerTitle>
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    <footnotes>
        <footnote id="F1">These shares were granted to Ms. Mahon under the Company's Long Term Incentive Plan as part of her 2021 compensation and are subject to a time-based restriction, with one-third of the total unit amount vesting on each of March 2, 2022, 2023, and 2024.</footnote>
        <footnote id="F2">Includes 20 shares acquired under the Universal Display Corporation Employee Stock Purchase Plan on December 31, 2020.</footnote>
        <footnote id="F3">These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2021 of 322 shares of restricted stock previously granted to Ms. Mahon.</footnote>
        <footnote id="F4">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 384 shares of restricted stock previously granted to Ms. Mahon.</footnote>
        <footnote id="F5">These shares were granted to Ms. Mahon as performance units under the Company's Long Term Incentive Plan as part of her 2018 compensation and vested on March 6, 2021 subject to the satisfaction of certain performance conditions, which our Human Capital Committee certified on February 16, 2021 as having occurred.</footnote>
        <footnote id="F6">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 288 shares of restricted stock previously granted to Ms. Mahon.</footnote>
        <footnote id="F7">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 3,722 shares of restricted stock previously granted to Ms. Mahon.</footnote>
        <footnote id="F8">These shares were withheld to satisfy a tax liability in connection with the vesting on March 8, 2021 of 7,000 shares of restricted stock previously granted to Ms. Mahon.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Janice K. Mahon (by Mauro Premutico as power of attorney)</signatureName>
        <signatureDate>2021-03-09</signatureDate>
    </ownerSignature>
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</DOCUMENT>
</SEC-DOCUMENT>
