<SEC-DOCUMENT>0001005284-18-000048.txt : 20180308
<SEC-HEADER>0001005284-18-000048.hdr.sgml : 20180308
<ACCEPTANCE-DATETIME>20180308192928
ACCESSION NUMBER:		0001005284-18-000048
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180306
FILED AS OF DATE:		20180308
DATE AS OF CHANGE:		20180308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SELIGSOHN SHERWIN I
		CENTRAL INDEX KEY:			0001233730

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12031
		FILM NUMBER:		18678134

	MAIL ADDRESS:	
		STREET 1:		C/O UNIVERSAL DISPLAY CORPORATION
		STREET 2:		375 PHILLIPS BLVD
		CITY:			EWING
		STATE:			NJ
		ZIP:			08618

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>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>PRIMARY DOCUMENT
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    <periodOfReport>2018-03-06</periodOfReport>

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        <issuerCik>0001005284</issuerCik>
        <issuerName>UNIVERSAL DISPLAY CORP \PA\</issuerName>
        <issuerTradingSymbol>OLED</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001233730</rptOwnerCik>
            <rptOwnerName>SELIGSOHN SHERWIN I</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O UNIVERSAL DISPLAY CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>375 PHILLIPS BLVD.</rptOwnerStreet2>
            <rptOwnerCity>EWING</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08618</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of Board and Founder</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
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                <sharesOwnedFollowingTransaction>
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                    <footnoteId id="F5"/>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Trust</value>
                </natureOfOwnership>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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                <sharesOwnedFollowingTransaction>
                    <value>136000</value>
                    <footnoteId id="F6"/>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Corp.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These units were granted to Mr. Seligsohn under the Company's Long Term Incentive Plan as part of his 2018 compensation and are subject to a time-based vesting restriction, with one-third of the total unit amount vesting on each of March 6, 2019, 2020, and 2021.</footnote>
        <footnote id="F2">These shares were granted to Mr. Seligsohn as performance units under the Company's Long Term Incentive Plan as part of his 2015 compensation and vested subject to the satisfaction of certain performance conditions, which our Compensation Committee certified on March 6, 2018 as having occurred.</footnote>
        <footnote id="F3">These shares were withheld to satisfy a tax liability in connection with the vesting on March 6, 2018 of 4,120 shares of restricted stock previously granted to Mr. Seligsohn.</footnote>
        <footnote id="F4">These shares were withheld to satisfy a tax liability in connection with the vesting on March 7, 2018 of 659 shares of restricted stock previously granted to Mr. Seligsohn.</footnote>
        <footnote id="F5">The Seligsohn Foundation, of which Mr. Seligsohn is the sole trustee.</footnote>
        <footnote id="F6">American Biomimetics Corporation, of which Mr. Seligsohn is the sole Director, Chairman, President and Secretary.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Sidney D. Rosenblatt (by power of attorney)</signatureName>
        <signatureDate>2018-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
