Patent
1988-10-06
1990-07-17
Miller, Stanley D.
350347E, G02F 113
Patent
active
049417371
ABSTRACT:
A liquid-crystal display device includes a multi-layered-type liquid-crystal cell that is composed of at least first and second cell layers. These cells contain liquid-crystal molecules with a twisted nematic orientation, 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. The orientation of the liquid-crystal molecules in the first cell layer in the vicinity of the second cell layer is at an angle of 70.degree. to 150.degree. to that of the liquid-crystal molecules in the second cell layer in the vicinity of the first cell layer such that this angle is the angle between a director in one cell aligned with the surface of its base substrate (parallel alignment) and the corresponding director in the other cell when it is also of parallel alignment wherein these two directors are horizontally coplanar, the first cell layer has a voltage-applying device that changes the orientation of the liquid-crystal molecules within the first cell layer, but this voltage-applying device does not cause the second cell layer to change orientation of the liquid-crystal molecules within it.
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Abstract; vol. 6, No. 38 (P-105), Mar. 9, 1982; Liquid-Crystal Display Device #56-156816 (A).
Gross Anita Pellman
Miller Stanley D.
Sharp Kabushiki Kaisha
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