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US Patent 9722193 Organic electroluminescent materials and devices

Patent 9722193 was granted and assigned to Universal Display Corporation on August, 2017 by the United States Patent and Trademark Office.

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Patent abstract

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

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