Organic electroluminescent device

Details Organic electroluminescent device Organic electroluminescent device

2004-03-26

2009-11-03

Yamnitzky, Marie R. (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C257SE51044

Reexamination Certificate

active

07611779

ABSTRACT:
A hole injection layer, a hole transport layer, a blue light emitting layer, an orange light emitting layer, an electron transport layer, an electron injection layer, and a cathode are formed in this order on an anode. The blue light emitting layer is composed of a host material doped with an assisting dopant and a luminescent dopant emitting blue light. A material used for the hole transport layer is used for the assisting dopant. The orange light emitting layer is composed of a host material doped with a luminescent dopant emitting orange light.

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Kido, J. et al. “Multilayer White Light-Emitting Organic Electroluminescent Device,” Science, vol. 267, Mar. 3, 1995, Department of Materials Science and Engineering, Yamagata University, Yonezawa, Yamagata 992, Japan, pp. 1332-1334.
Office Action issued in corresponding Japanese Patent Application No. 2004-079216, dated Sep. 7, 2004.

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