Multi-domain LCD with subpixels having twist angles with opposit

Details Multi-domain LCD with subpixels having twist angles with opposit Multi-domain LCD with subpixels having twist angles with opposit

1996-11-12

1999-03-02

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 42, 349110, 349144, G02F 11335, G02F 1333, G02F 11343

Patent

active

058778314

ABSTRACT:
Nematic liquid crystal display device, in which the isocontrast curve has obtained a more symmetrical shape by combining two and four sub-pixels with twist angles which are smaller than 90 degrees, at which the sub-pixels are obtained by providing different orientation directions (11) in an orienting layer (8) by means of linearly polarized light. If a cholesteric nematic liquid crystal material is used, a sub-pixel may have a twist angle of more than 90 degrees, while pairs of sub-pixels then have twist angles of opposite twist sense, at which the sum of the absolute values of the twist angles is smaller than 180 degrees.

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Schadt et al, "Surface-Induced Parallel Alignment Of Liquid Crystals By Linearly Polymerized Photopolymers", Jpn. J. Appl. Phys. vol.31 (1992), pp. 2155-2164.
Koike et al, "A Full-Color TFT-LCD With A Domain-Divided Twisted-Nematic Structure", SID 92 Digest, pp. 798-801.

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