Liquid-crystal display device

Details Liquid-crystal display device Liquid-crystal display device

1988-03-23

1991-09-03

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359102, G02F 1133

Patent

active

050447327

ABSTRACT:
A liquid-crystal display device comprising a double-layered-type liquid-crystal cell that is composed of a first cell layer and a second cell layer, said cell containing liquid-crystal molecules with a twisted nematic orientation therein and a voltage-applying means in one of the first and second cell layers, wherein the angle of twist of the liquid-crystal molecules in the first cell layer is opposite to that of twist of the liquid-crystal molecules in the second cell layer, and the orientation of the liquid-crystal molecules in the first cell layer in the vicinity of the second cell layer is at right angles to that of the liquid-crystal molecules in the second cell layer in the vicinity of the first cell layer.

REFERENCES:
patent: 4408839 (1983-10-01), Wiener-Avnear
patent: 4508427 (1985-04-01), Ross
patent: 4610507 (1986-09-01), Kamamori et al.
patent: 4779960 (1988-10-01), Kozaki et al.
patent: 4844569 (1989-07-01), Wada et al.

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