Liquid crystal display device having two metastable states and d

Details Liquid crystal display device having two metastable states and d Liquid crystal display device having two metastable states and d

1993-05-07

1997-01-14

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 95, G09G 336

Patent

active

055944647

ABSTRACT:
A high speed multiplex-driven liquid crystal display device is capable of utilizing a bistable nematic liquid crystal medium while maintaining high contrast, fast switching capability and a wide viewing angle. The chiral nematic liquid crystal medium has a twisted structure wherein a first voltage waveform applied in a first time period brings on Frederick's transition followed by a selected second voltage waveform applied in a second time period capable of generating one of two selectable metastable states representing switchable bistable states.

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