Area lighting device and liquid crystal display device...

Details Area lighting device and liquid crystal display device... Area lighting device and liquid crystal display device...

2011-03-22

2011-03-22

Kumar, Srilakshmi K (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C349S067000

Reexamination Certificate

active

07911438

ABSTRACT:
The invention relates to an area lighting device using an LED as a light source and a liquid crystals display having the same. An object is to provide an area lighting device which can provide stable display quality and a liquid crystal display device having the same. An area lighting device is configured to have a light source part provided with a plurality of LEDs; a dummy liquid crystal panel which has a pair of substrates and a liquid crystal layer encapsulated between the substrates, and to which light from the light source part partially enters; a chromaticity sensor which senses a chromaticity of light transmitted through the dummy liquid crystal panel; and an LED control part which compares the sensed chromaticity with a set target value, and controls the plurality of the LEDs so that the chromaticity becomes close to the target value.

REFERENCES:
patent: 5489917 (1996-02-01), Ikezaki et al.
patent: 6188380 (2001-02-01), Kawashima et al.
patent: 6304304 (2001-10-01), Koma
patent: 6908224 (2005-06-01), Schneider et al.
patent: 7248308 (2007-07-01), Mizutani et al.
patent: 7362403 (2008-04-01), Uehara
patent: 2002/0158857 (2002-10-01), Iisaka
patent: 2004/0095402 (2004-05-01), Nakano
patent: 2004/0119908 (2004-06-01), Sakai
patent: 2004/0246435 (2004-12-01), Kamei
patent: 2005/0116921 (2005-06-01), Kim
patent: 2004-029141 (2004-01-01), None
patent: 2004-199968 (2004-07-01), None

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