Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

1988-10-14

1990-07-31

James, Andrew J.

350347V, 350347E, 350350R, G02F 113

Patent

active

049445774

ABSTRACT:
A liquid crystal display device of this invention includes a pair of opposing substrates, a plurality of electrodes arranged on the inner surfaces of the pair of opposing substrates so as to oppose each other, aligning films formed on the inner surfaces of the pair of substrates on which the plurality of electrodes are formed, a nematic liquid crystal sealed between the pair of opposing substrates, and a pair of polarizing plates arranged to sandwich the nematic liquid crystal. The nematic liquid crystal has a value of dielectric ratio .DELTA..epsilon./.epsilon..sub..perp. of 0.5 or less, a value of elastic constant ratio K.sub.33 /K.sub.11 of 0.8 or less, and values of liquid crystal layer thickness d and optical anisotropy .DELTA.n with which a value of product .DELTA.n.multidot.d of the liquid crystal layer thickness d and optical anisotropy .DELTA.n becomes 0.5 (.mu.m) or more and 0.7 (.mu.m) or less.

REFERENCES:
patent: 4579425 (1986-04-01), Ishii et al.
patent: 4643841 (1987-02-01), Ishii et al.
patent: 4693562 (1987-09-01), Hasegawa et al.
patent: 4721366 (1988-01-01), Nosher
patent: 4799774 (1989-01-01), Baur et al.
G. Baur, "The Influence of Material and Device Parameters on the Optical Characteristics of Liquid Crystal Displays", Mol. Cryst. Liq. Cryst., 1981, vol. 63, pp. 45-58.
Shibata et al., "The Effects of Material Constants and Device Parameters on Electrooptic Characteristics of Liquid Crystal Devices", Mol. Cryst. Liq. Cryst., 1984, vol. 108, pp. 339-348.

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