Aromatic amine derivative and organic electroluminescence...

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Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C564S429000, C556S413000, C257S040000

Reexamination Certificate

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07816017

ABSTRACT:
A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.

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