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US Patent 11672176 Host materials for electroluminescent devices

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Patent attributes

Patent Applicant

Universal Display Corporation

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Current Assignee

Universal Display Corporation

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Date of Patent

June 6, 2023

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Patent Application Number

170902650

Date Filed

November 5, 2020

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Patent Citations

US Patent 7338722 Phenyl and fluorenyl substituted phenyl-pyrazole complexes of Ir

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US Patent 7396598 Light emitting material and organic light-emitting device

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US Patent 7431968 Process and apparatus for organic vapor jet deposition

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US Patent 7534505 Organometallic compounds for use in electroluminescent devices

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US Patent 7445855 Cationic metal-carbene complexes

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US Patent 7087321 Organic light emitting devices having reduced pixel shrinkage

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US Patent 7090928 Binuclear compounds

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US Patent 7154114 Cyclometallated iridium carbene complexes for use as hosts

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Patent Primary Examiner

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CPC Code

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Disclosed is an OLED configuration that although comprises an exciplex that has an emission spectrum that is redder than the emission spectrum of the emitter, the emission from the exciplex is suppressed so that the overall OLED emission spectrum is still dominated by the emission of the emitter.

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