Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2008-06-16
2010-10-12
Harvey, Minsun (Department: 2828)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C372S050121
Reexamination Certificate
active
07812520
ABSTRACT:
The conventional light-emitting element formed by an electroluminescent material has a problem due to poor color purity of light emission. Accordingly, it is an object of the present invention to provide a high luminance and high efficiency light-emitting device formed by an organic compound material. The invention provides a light-emitting device in which an organic compound layer that emits light having an emission peak with a half-band width of at most 10 nm upon applying current is interposed between a pair of electrodes is provided. The variation of emission peak intensity depending on a current density can be sorted by two linear regions with different gradients. A region of a sharp gradient is at a higher current density side compared to a region of a slow gradient. TFTs are provided to each pixel in order to perform active matrix driving.
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Abe Hiroko
Nomura Ryoji
Yamazaki Shunpei
Yukawa Mikio
Golub Marcia A.
Harvey Minsun
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
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