To provide a color liquid crystal display device which has high color purity of ≥80% NTSC ratio.
The color liquid crystal display device is constituted by combining a light shutter utilizing liquid crystal 7, a color filter 9 having at least three color elements of red, green and blue corresponding to the light shutter and back lights 1, 2 for transmission illumination. The color liquid crystal display device is satisfied by the following conditions: (1) I(λn)×TG(λn) > 0.01 in regard to any one wave length of 500 nm<λn<530 nm; (2) I(λn)×TG(λn) < 0.0001 in regard to wave length region of 610 nm<λn<650 nm; and (3) I(λn)×TG(λn) < 0.0001 in regard to wave length region of 400 nm<λn<450 nm, wherein, TG(λn) is spectral transmission factor of a green pixel in the color filter 9 at wave length λn nm (wave length at every 5nm in the visible light region of 380∼780nm) and I(λn) is relative light intensity normalized by total light intensity from the back light at the wave length λn nm.
SAKO NAOKI
KIJIMA NAOTO
HISAMUNE TAKAYUKI
OTSUKA REIJI
KASEI OPTONIX
| JPH04263244A | 1992-09-18 | |||
| JPH0997017A | 1997-04-08 | |||
| JP2001228319A | 2001-08-24 | |||
| JPH08209121A | 1996-08-13 | |||
| JP2001351425A | 2001-12-21 | |||
| JP2000338322A | 2000-12-08 | |||
| JP2001222904A | 2001-08-17 | |||
| JP2002105449A | 2002-04-10 | |||
| JP2002277870A | 2002-09-25 |
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