Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-04-12
2005-04-12
Yamnitzky, Marie (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C548S304400, C548S304700, C548S310700
Reexamination Certificate
active
06878469
ABSTRACT:
Novel materials for electron injection/transportation and emitting layers can greatly improve the stability of an organic electroluminescent display. Electroluminescent displays incorporating these materials produce blue light at low voltage levels. These novel organic materials include compounds in which 1 to 2 imidazole functional groups are introduced in the 2 or 2,6-site of 9,10 substituted anthracene. An organic electroluminescent display with an organic compound layer of these materials has high efficiency, thermal stability, operationally stability and maintains driving voltage before and after operation.
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Bae Jae-Soon
Han Young-Kyu
Im Sung-Gap
Kim Ji-Eun
Kim Kong-Kyeom
Birch & Stewart Kolasch & Birch, LLP
LG Chem Ltd.
Yamnitzky Marie
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