Liquid crystal device and liquid crystal display apparatus

Details Liquid crystal device and liquid crystal display apparatus Liquid crystal device and liquid crystal display apparatus

Filed on

1993-12-23

Date issued

1995-10-24

Examiner

Harris, Cynthia

Patent Class

Compositions

SubClass

Liquid crystal compositions

SubSubClass

Containing nonsteryl liquid crystalline compound of...

Other Related Categories

359 56, 359104, C09K 1934, G02F 113

Type

Patent

Status

active

Patent number

054607493

Description

ABSTRACT:
A liquid crystal device is constituted by disposing a chiral smectic liquid crystal between a pair of substrates each provided with an electrode and a uniaxial alignment film. The chiral smectic liquid crystal is placed in such a quasi-smectic A alignment state that the liquid crystal molecules will have a single average molecular axis under no electric field application on a lower temperature side within chiral smectic C phase range, wherein the single average molecular axis can be confirmed as a position providing the darkest state when observed through cross nicol polarizers. Such a quasi-smectic A alignment state is effective in providing a liquid crystal device (or display apparatus) having an improved shock resistance and a good low-temperature storage properties.

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