Reflection type liquid crystal display device and personal digit

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

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348790, 348791, G02F 11335, H04N 314, H04N 930

Patent

active

056710313

ABSTRACT:
A reflection type liquid crystal display device of the present invention includes: a first substrate having a reflective electrode formed thereon; a second substrate having a transparent counter substrate and a color filter formed thereon; and a liquid crystal layer interposed between the first and second substrates, wherein the color filter includes a red color filter portion and a cyan color filter portion. The cyan color filter portion transmits light having a complementary color of a color of light transmitted through the red color filter portion. The light transmitted through the red color filter portion has a chromaticity (x, y) on the XYZ color system chromaticity diagram satisfying the following formulae at a 2.degree. viewing angle using a standard light source D.sub.65 :

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patent: 5124818 (1992-06-01), Conner et al.
patent: 5157506 (1992-10-01), Hannah
patent: 5345322 (1994-09-01), Fergason
patent: 5590251 (1996-12-01), Takagi
Uchida et al, "Reflective Multicolor Liquid Crystal Display", Technical Report of the Institute of Television Engineers of Japan, ED 906, IPD 101-9, pp. 1-6, 1985.
Kimura, "Reflection Type Liquid Crystal TFT Color Filter", NIKKEI Microdevices, pp. 48-50, 1994.

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