Organic light emitting compound and organic light emitting...

Active solid-state devices (e.g. – transistors – solid-state diode – Organic semiconductor material

Reexamination Certificate

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C544S056000, C544S101000

Reexamination Certificate

active

07619246

ABSTRACT:
A compound represented by Formula 1 and an organic light emitting device including the same:where Ar is a substituted or unsubstituted C6-C26aryl group; X is O, S,R1and R2are hydrogen, a halogen, a C1-C12alkyl group, a C6-C26aryl group, or a substituted group thereof; R3, R4, R5, R6, R7and R8are each independently hydrogen or a substituted or unsubstituted C1-C12alkyl group; R9through R22are each independently hydrogen, a C1-C30alkyl group, a C1-C30alkoxy group, a C6-C30aryl group, a C6-C30arylalkyl group, a C6-C30aryloxy group, a C5-C30heteroaryl group, a C5-C30heteroarylalkyl group, a C5-C30heteroaryloxy group, a C5-C20cycloalkyl group, a C5-C30heterocycloalkyl group, or a substituted group thereof. An organic light emitting device using the compound has low operating voltage, high color purity, and high efficiency.

REFERENCES:
patent: 4356429 (1982-10-01), Tang
patent: 11-003782 (1999-01-01), None
Kuwabara et al., “Thermally Stable Multilayered Organic Electroluminescent Devices Using Novel Starburst Molecules, 4,4′,4″-Tri(N-carbazolyl)triphenylamine (TCTA) and 4,4′,4″-Tri(3-methylphenylphenyl-amino)triphenylamine (m-MTDATA), as Hole-Transport Materials”, Adv. Mater. 1994, 6, No. 9, pp. 677-679.

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