Liquid crystal panel and display including dichroic dye for abso

Details Liquid crystal panel and display including dichroic dye for abso Liquid crystal panel and display including dichroic dye for abso

1997-09-10

2000-11-14

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349178, 349106, 349 79, G02F 11347, G02F 11355, G02F 113

Patent

active

061477400

ABSTRACT:
A liquid crystal panel has a pair of substrates disposed almost parallel to each other. On each of the substrates, an electrode and an alignment film are formed. A liquid crystal layer having a negative dielectric anisotropy is sandwiched by the substrates. In the absence of voltage applied across the electrodes, the molecules of the liquid crystal layer align almost perpendicular to the substrates. In this liquid crystal layer, a dichroic dye, preferably a blue dichroic dye, is added to absorb the yellow component of an incident light. Instead of adding the dye into the liquid crystal layer, a color compensation layer containing the dye is formed on or adjacent to at least one of the substrates. The yellow component of an incident light to the liquid crystal panel is absorbed by the color compensation layer. As a result, the liquid crystal panel and the liquid crystal display using the panel do not show yellow coloring when the panel is observed from oblique directions.

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patent: 5801796 (1998-09-01), Lowe
Birendra Bahadur "Chapter 11: Dichroic Liquid Crystal Displays" Liquid Crystals--Applications and Uses vol. 3 pp. 179-180, 1992.

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