Liquid crystal electro-optical device

Details Liquid crystal electro-optical device Liquid crystal electro-optical device

1997-02-12

2000-04-25

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 42, 349141, 349179, G02F 1133, G02F 1136, G02F 11343, G02F 113

Patent

active

060550287

ABSTRACT:
An electric field that is parallel with a TFT substrate is formed by a pair of electrodes formed on the TFT substrate. Liquid crystal molecules in a light modulating layer are caused to respond electro-optically to the electric field. The light modulating layer is constituted of a liquid crystal material, an optically active substance, and a dichroic dye. The spiral pitch p [.mu.m] of the light modulating layer, the cell thickness d [.mu.m], the twist angle n of liquid crystal molecules, and the interelectrode interval L [.mu.m] are set in ranges of 1.ltoreq.p.ltoreq.15, 1.ltoreq.d.ltoreq.10, n.ltoreq.300.degree., and L<25.

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