Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1999-05-28
2000-08-22
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
362 26, 362 27, 362 31, G02F 11335, G01D 1128, F21V 704
Patent
active
061080608
ABSTRACT:
A surface-type illumination device suitable for providing backlight in a liquid crystal display is disclosed. For example, an L-shaped fluorescent light can be used as an illuminant and mounted next to two edges of a substantially rectangular light guide plate. The corner of an edge portion between the two edges is removed. The fluorescent light, the length of whose illuminating portion is long, is positioned with an appropriate gap from the light guide plate allowing for illumination with high brightness and low power consumption. Consequently, when the illumination device is used in a color liquid crystal display, appropriate backlight with high brightness can be obtained. Moreover, because the influence of the temperature from the illumination device is small, a stable color display can be achieved.
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Akahane Fumiaki
Funamoto Tatsuaki
Yagasaki Toru
Malinowski Walter
Seiko Epson Corporation
Sikes William L.
Watson Mark P.
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