Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-04-04
2010-06-15
Tarazano, D. Lawrence (Department: 1794)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C428S690000, C428S917000, C313S506000, C257S040000, C257SE51049, C257SE51050, C257SE51051, C548S440000, C564S427000, C585S026000
Reexamination Certificate
active
07737627
ABSTRACT:
The present invention relates to an organic electroluminescent (OEL) compound that comprises at least one fluorene derivative and at least one carbazole derivative. The compound has good electrical properties, light emitting properties and charge transport ability, and thus is suitable as a host material suitable for fluorescent and phosphorescent dopants of all colors including red, green, blue, white, etc., and as a charge transport material. An OEL display device that uses an organic layer that includes the OEL compound has a high efficiency, a low voltage, a high luminance, and a long lifespan because it has superior current density.
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Thomas et al., Journal of the American Chemical Society, (2001), vol. 123, No. 23, pp. 9404-9411.
Shen et al., Journal of Materials Chemistry, (2005), Issue 15, pp. 2455-2463.
Chinese Office Action dated Dec. 26, 2008.
K. R. Justin Thomas, et al.; Green and Yellow Electroluminescent Dipolar Carbazole Derivatives: Features and Benefits of Electron-Withdrawing Segments; Chemistry of Materials, 2002; vol. 14, No. 9; pp. 3852-3859.
K. R. Justin Thomas, et al.; Light-Emitting Carbazole Derivatives: Potential Electroluminescent Material; Journal of the American Chemical Socity; 2001; vol. 123, No. 38; pp. 9404-9411.
Hwang Seok-Hwan
Kim Hee-Yeon
Kim Young-Kook
Lee Seok-Jong
Yang Seung-Gak
Crouse Brett A
H.C. Park & Associates PLC
Samsung Mobile Display Co., Ltd.
Tarazano D. Lawrence
LandOfFree
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