<SEC-DOCUMENT>0001209191-21-018951.txt : 20210309
<SEC-HEADER>0001209191-21-018951.hdr.sgml : 20210309
<ACCEPTANCE-DATETIME>20210309161432
ACCESSION NUMBER:		0001209191-21-018951
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:			BROWN JULIA J
		CENTRAL INDEX KEY:			0001232979

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12031
		FILM NUMBER:		21725934

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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    <footnotes>
        <footnote id="F1">These units were granted to Dr. Brown 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">These shares were withheld to satisfy a tax liability in connection with the vesting on March 5, 2021 of 584 shares of restricted stock previously granted to Dr. Brown.</footnote>
        <footnote id="F3">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 696 shares of restricted stock previously granted to Dr. Brown.</footnote>
        <footnote id="F4">These shares were granted to Dr. Brown 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="F5">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 523 shares of restricted stock previously granted to Dr. Brown</footnote>
        <footnote id="F6">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2021 of 6,005 shares of restricted stock previously granted to Dr. Brown.</footnote>
        <footnote id="F7">These shares were withheld to satisfy a tax liability in connection with the vesting on March 8, 2021 of 25,000 shares of restricted stock previously granted to Dr. Brown.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Julia J. Brown (by Mauro Premutico as power of attorney)</signatureName>
        <signatureDate>2021-03-09</signatureDate>
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