Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2004-09-23
2009-06-02
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S483000, C313S498000, C313S500000, C313S501000, C313S504000, C313S505000
Reexamination Certificate
active
07541734
ABSTRACT:
It is an object of the present invention to provide a light-emitting device that is high in color purity of light and is high in light extraction efficiency, where sputtering is used to form an electrode on an electroluminescent layer without damage to a layer including an organic material.The present invention provides a light-emitting device comprising a first light-emitting element that emits red light, a second light-emitting element that emits green light, a third light-emitting element that emits blue light, and a color filter, where the color filter comprises a first coloring layer that selectively transmits red light, a second coloring layer that selectively transmits green light, and a third coloring layer that selectively transmits blue light, the first to third light-emitting elements respectively correspond to the first to third coloring layers, wherein each of the first to third light-emitting elements has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer, and wherein the electroluminescent layer includes a layer in contact with the second electrode, and a metal oxide or a benzoxazole derivative is included in the layer in contact with the second electrode.
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Office Action (Chinese Application No. 200410083573.1) dated Apr. 18, 2008.
Ikeda Hisao
Nakamura Yasuo
Saito Keiko
Sakata Junichiro
Yamazaki Shunpei
Patel Nimeshkumar D.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Walford Natalie K
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