Patent
1984-06-25
1986-09-09
Corbin, John K.
350349, G02F 113
Patent
active
046105085
ABSTRACT:
Disclosed is a liquid crystal display device in which a twisted nematic type liquid crystal display element is used as a light shutter and combined with color polarizer plates to provide color display, characterized in that a nematic crystal added with a black coloring matter is used and in that at least one of the polarizer plates has a degree of polarization of about 80% or less. Preferably, the rate of addition of the black coloring matter is limited to about 1.5% or less.
REFERENCES:
patent: 3963312 (1976-06-01), Wild
patent: 4398803 (1983-08-01), Pohl et al.
patent: 4427741 (1984-01-01), Aizawa et al.
patent: 4527864 (1985-07-01), Dir
Alps Electric Co. ,Ltd.
Corbin John K.
Gallivan Richard F.
Shoup Guy W.
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