Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2011-07-26
2011-07-26
Hines, Anne (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S503000, C313S504000, C313S512000, C445S024000, C445S025000, C428S690000
Reexamination Certificate
active
07986085
ABSTRACT:
A light emitting apparatus including a plurality of light emitting devices for different colors and having a simple structure with small variations in luminous brightness of each of the light emitting devices for the different colors is provided, and electronic equipment provided with such a light emitting apparatus is also provided. The light emitting apparatus is configured into a display apparatus10which comprises: a TFT circuit board (counter substrate)20; red light emitting devices1R provided on the TFT circuit board20and emitting a light of a red luminescent color (R); green light emitting devices1G provided on the TFT circuit board20and emitting a light of a green luminescent color (G); and blue light emitting devices1B provided on the TFT circuit board20and emitting a light of a blue luminescent color (B); and wherein roughness is formed on an interface between a hole transport layer4and a red light emitting layer5R in each of the red light emitting devices1R, while no roughness is formed on an interfaces between a hole transport layer and a light emitting layer in each of the green light emitting devices1G and the blue light emitting devices1B. With these structures, it is possible to make the luminous brightness in each of the light emitting devices1R,1G and1B for the respective colors substantially equal to each other when substantially the same voltage is applied thereto.
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Fujimori et al, Japanese Patent Publication 2000-235891, Aug. 2000, machine translation.pdf.
Nishimura et al., Japanese Patent Publication 2002-313567, Oct. 2002, machine translation.
Nakagawa Tetsuo
Shinohara Yuji
Green Tracie
Hines Anne
Seiko Epson Corporation
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