Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1997-07-25
2000-03-21
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349133, 349172, G02F 11337, G02F 1141, G02F 113
Patent
active
060408847
ABSTRACT:
A liquid crystal device comprises a pair of substrates and a liquid crystal provided between the paired substrates wherein domains whose threshold voltages are different from one another are finely distributed throughout the liquid crystal. In particular, the respective substrates each has a transparent electrode and an alignment film formed thereon in this order and the substrates are assembled to establish a given space therebetween, and a ferroelectric liquid crystal being injected into the given space wherein domains are finely distributed as set out above, thereby providing a a liquid crystal display device. The fine distribution is such that when a transmittance through inverted domains is 25%, the number of domains (microdomains) having a size of larger than 2 .mu.m.phi. in a field of 1 mm.sup.2 is not smaller than 300, preferably not smaller than 600, and the width of the threshold voltage within the domains is not smaller than 2 volts within a transmittance range of from 10 to 90%. The liquid crystal device, particularly the display device, keeps a high contrast and can easily, reliably realize an analog gray-scale display at low costs.
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Bao Yang Ying
Matsui Eriko
Nito Keiichi
Takanashi Hidehiko
Yasuda Akio
Sikes William L.
Sony Corporation
Ton Toan
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