Organic electroluminescence device

Details Organic electroluminescence device Organic electroluminescence device

2007-08-07

2007-08-07

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C252S301160, C548S120000, C548S150000, C548S218000, C548S302100, C548S427000, C549S275000

Reexamination Certificate

active

10505097

ABSTRACT:
An organic electroluminescent (EL) device which contains a novel coumarin derivative composed of a coumarin ring, a naphthalene ring with one or more hydrocarbon groups, and a five-membered hetero ring condensed with the naphthalene ring so as to give an electronic resonance through the coumarin and naphthalene rings. The coumarin derivative emits a visible luminescence with a satisfactory color purity, which consistently continues over a long period of time even at an elevated temperature when used in such an organic device.

REFERENCES:
patent: 6440586 (2002-08-01), Yanagi et al.
patent: 6573380 (2003-06-01), Taniguchi et al.
patent: 1010742 (1999-12-01), None
patent: 1 041 074 (2000-10-01), None
patent: 2001-072683 (2001-03-01), None
patent: 2001-076876 (2001-03-01), None
patent: 2001-76876 (2001-03-01), None
patent: 2002-47291 (2002-02-01), None

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