Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2008-04-01
2008-04-01
Garrett, Dawn (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S040000, C257SE51024, C257SE51026, C257SE51050, C548S154000, C548S161000, C548S303100, C548S440000
Reexamination Certificate
active
07351481
ABSTRACT:
The present invention is related to an imidazole ring-containing compound and an organic electroluminescence (EL) display device using the same. In particular, the imidazole ring-containing compound may be used alone or in combination with a dopant as a material for organic films such as an electroluminescent layer. The organic EL display device using an organic film made of the imidazole ring-containing compound has improved characteristics such as luminance, efficiency, driving voltage, and color purity.
REFERENCES:
patent: 3455924 (1969-07-01), Lednicer
patent: 5552422 (1996-09-01), Gauthier et al.
patent: 6551723 (2003-04-01), Okada et al.
patent: 2002/0183320 (2002-12-01), Gerlach et al.
patent: 11-106340 (1999-04-01), None
Do Young-rag
Hwang Seok-Hwan
Kim Hee-Yeon
Kim Young-Kook
Lee Seok-Jong
Crouse Brett A
Garrett Dawn
H.C. Park & Associates PLC
Samsung SDI & Co., Ltd.
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