Liquid crystal device and process for production thereof

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

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349133, 349135, G02F 11337, G02F 11335

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active

058152300

ABSTRACT:
A liquid crystal device is constituted by a pair of oppositely disposed substrates having opposing inner surfaces and opposing electrodes thereon, and a chiral smectic liquid crystal assuming two stable states disposed between the opposing electrodes. The opposing inner surfaces of the pair of substrates have been subjected to an aligning treatment such that the liquid crystal placed in one of the two stable states moves under application of an electric field in a direction identical to one in which the liquid crystal placed in the other of the two stable states moves under the application of the electric field. The liquid crystal device has an effective optical modulation region and a peripheral region outside the effective optical modulation region, wherein the effective optical modulation region and the photosensitive member have been subjected to different aligning treatments. In the liquid crystal device thus constituted, a liquid crystal movement liable to cause yellowing or fluctuation in drive parameters otherwise is effectively compensated by a liquid crystal movement in the peripheral region.

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patent: 5035491 (1991-07-01), Kawagishi et al.
patent: 5182662 (1993-01-01), Mihara
patent: 5223963 (1993-06-01), Okada et al.
patent: 5303076 (1994-04-01), Okada et al.
patent: 5321537 (1994-06-01), Okada et al.
patent: 5377033 (1994-12-01), Radcliffe
patent: 5381256 (1995-01-01), Hanyu et al.

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