Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2004-06-28
2008-08-19
Yamnitzky, Marie R. (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S040000, C257SE51046, C257SE51050, C548S440000, C556S413000, C556S465000, C562S899000
Reexamination Certificate
active
07413817
ABSTRACT:
A 4,4′-Bis(carbazol-9-yl)-biphenyl (CBP) based silicone compound and an organic electroluminescent device using the CBP based silicon compound have excellent blue light emission characteristics and hole transfer capability. The CBP based silicon compound may be used as a blue light emission material or as a host material for various phosphorescent or fluorescent dopants emitting red, green, blue, or white light. Therefore, the organic electroluminescent device using the CBP based silicon compound has excellent characteristics such as a high efficiency, a high luminance, a long life span, and a low power consumption.
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Hwang Seok-Hwan
Kim Young-Kook
Lee Seok Jong
Samsung SDI & Co., Ltd.
Stein, McEwen & Bui LLP
Yamnitzky Marie R.
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