Liquid-crystal display device using twisted nematic liquid crystal molecules
First Claim
1. A liquid-crystal display device comprising:
- a multi-layer-type liquid-crystal cell that is composed of at least first and second cell layers, said cell layers containing liquid-crystal molecules with a twisted nematic orientation therein;
said first cell layer having an angle of twist of said liquid-crystal molecules opposite to an angle of twist of the liquid-crystal molecules in said second cell layer;
said liquid-crystal molecules in said first cell layer in the vicinity of said second cell layer having a first orientation; and
said liquid-crystal molecules in said second cell layer in the vicinity of said first cell layer having a second orientation;
said first and second orientation forming an angle which varies between 70°
to 80°
or 110°
to 150°
; and
voltage-applying means, operatively connected to said first cell layer, for applying a voltage to said first cell layer to vary said first orientation of said liquid-crystal molecules;
said second orientation of said liquid-crystal molecules in said second layer cell not being varied by said voltage applying means.
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Accused Products
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° to 150° 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.
31 Citations
18 Claims
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1. A liquid-crystal display device comprising:
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a multi-layer-type liquid-crystal cell that is composed of at least first and second cell layers, said cell layers containing liquid-crystal molecules with a twisted nematic orientation therein; said first cell layer having an angle of twist of said liquid-crystal molecules opposite to an angle of twist of the liquid-crystal molecules in said second cell layer; said liquid-crystal molecules in said first cell layer in the vicinity of said second cell layer having a first orientation; and said liquid-crystal molecules in said second cell layer in the vicinity of said first cell layer having a second orientation; said first and second orientation forming an angle which varies between 70°
to 80°
or 110°
to 150°
; andvoltage-applying means, operatively connected to said first cell layer, for applying a voltage to said first cell layer to vary said first orientation of said liquid-crystal molecules; said second orientation of said liquid-crystal molecules in said second layer cell not being varied by said voltage applying means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification