Reflective liquid crystal display with optical compensation plat

Details Reflective liquid crystal display with optical compensation plat Reflective liquid crystal display with optical compensation plat

1996-10-04

1998-02-24

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349113, 349121, G02F 11335

Patent

active

057216002

ABSTRACT:
In a liquid crystal display comprising a lamination of a polarizing plate, a liquid crystal layer, a compensator and a reflector in the mentioned order, the refractive anisotropy of the liquid crystal layer and the refractive anionotropy of the compensator is opposite in sense to each other, and assuming that the liquid crystal layer is sliced in the absence of applied voltage or in the presence of a given applied voltage in the thickness direction into N sub-layers such that the liquid crystal molecule long axis bearing therein can be regarded to be substantially fixed, the liquid crystal molecule long axis orientation of the 1-st sub-layer being represented by a tilt angle .theta..sub.1,i and a twist angle .phi..sub.1,i, and also assuming that the compensator consists of N sub-layers, the optic axis bearing of the 1-st sub-layer being represented by a tilt angle .theta..sub.2,i and a twist angle .phi..sub.2,i, the 1-st sub-layer of the liquid crystal layer and the (N-i+1)-th sub-layer of the compensator are approximately related to each other as .theta..sub.1,i =.theta..sub.2,N-i+1, and .phi..sub.1,i =.phi..sub.2,N-i+1.

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J. Glueck et al.; "Fast-switching reflective HAN-mode light valves with high pixel density for colour TV projection"; Displays, vol. 16, No. 1(1995), pp. 39-42.
S.A. Lien; "Three-Dimensional Simulation of Multi-Domain Homeotropic Liquid Crystal Cells"; Jpn. J. Appl. Phys., vol. 33 (1994), pp. 6240-6244.
Proceedings of the 1995 Spring 42nd Applied Physics Association, No. 3, p. 1143 (abstract only).

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