Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-10-17
2006-10-17
Dye, Rena (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C257S040000, C257SE51051, C313S504000, C313S506000, C564S426000, C564S433000, C564S434000
Reexamination Certificate
active
07122256
ABSTRACT:
Novel styryl compounds represented by the following general formulae (1) and (2):wherein R1to R10each independently represent hydrogen atom, an alkyl group, an alkoxyl group, an aryl group, an aryloxyl group, a condensed polycyclic group, a heterocyclic group, amino group, an alkylamino group, an arylamino group, cyano group, nitro group, hydroxyl group or a halogen atom, adjacent groups among groups represented by R1to R10may be bonded to each other and form a saturated or unsaturated carbon ring, and A, B, C, D, A′, B′, C′ and D′ each independently represent a substituted or unsubstituted alkyl group or aryl group having a specific structure; and an organic electroluminescence device comprising a film of organic compounds comprising at least a light emitting layer, wherein at least one of the layers of the film of organic compounds comprises the novel styryl compound. The organic electroluminescence device has excellent heat resistance, a high efficiently of light emission and a long life and emits blue light of a high purity. The novel styryl compounds provide the advantageous properties to the organic electroluminescence device.
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Arai Hiromasa
Funahashi Masakazu
Hosokawa Chishio
Dye Rena
Idemitsu Kosan Co. Ltd.
Steptoe & Johnson LLP
Thompson Carnie
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