Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2011-01-11
2011-01-11
Wu, David (Department: 1796)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S040000, C257S103000
Reexamination Certificate
active
07867630
ABSTRACT:
Provided is a white organic electroluminescent (EL) device including multiple polymer light emitting layers. a white organic electroluminescent device includes a first polymer light-emitting layer and a second polymer light-emitting layer, both of which are formed between a first electrode and a second electrode. A highest occupied molecular orbital (HOMO) energy level of the first polymer light-emitting layer is in the range 5.0 eV through 5.4 eV, and a HOMO energy level of the second polymer light-emitting layer is higher than the HOMO energy level of the first polymer light-emitting layer. Colors emitted from both of the first and second polymer light-emitting layers are combined to produce a white color.
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Chinese Office Action issued by the Chinese Patent Office on Jan. 15, 2010 corresponding to Chinese Patent Application No. 2007100021686 with English Translation attached.
Kim Yu-Jin
Park Jong-Jin
Park Sang-Hoon
Son Jhun-Mo
Bushnell , Esq. Robert E.
Nguyen Vu A
Samsung Mobile Display Co., Ltd.
Wu David
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