Driving method and apparatus for liquid crystal device

Details Driving method and apparatus for liquid crystal device Driving method and apparatus for liquid crystal device

1995-04-20

1999-08-24

Mengistu, Amare

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 89, G09G 336

Patent

active

059430354

ABSTRACT:
A liquid crystal device including a chiral smectic liquid crystal disposed in a bistable alignment state including a first and a second stable state showing an asymmetrical threshold characteristic can be driven for a binary display according to a matrix drive scheme with an improved drive margin. The liquid crystal device is driven so that the liquid crystal is first reset into a less-stable first state regardless of display data and then selectively switched into a more-stable second state depending on given gradation data. The chiral smectic liquid crystal may be disposed in a planar smectic layer structure free from bending.

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