Liquid crystal device with different pretilt in peripheral porti

Details Liquid crystal device with different pretilt in peripheral porti Liquid crystal device with different pretilt in peripheral porti

1996-10-30

1998-07-28

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349172, 349129, G02F 11333, G02F 113

Patent

active

057868794

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 disposed between the opposing electrodes. The liquid crystal device has an effective optical modulation region and a peripheral region outside the effective optical modulation region. In the device, liquid crystal molecules in the peripheral region have a pretilt angle which is larger than a pretilt angle of liquid crystal molecules in the effective optical modulation region. As a result, a local pressure irregularity or a cell thickness change caused by a liquid crystal molecular movement along an extension of the device is effectively suppressed.

REFERENCES:
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patent: 5204706 (1993-04-01), Saito
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Patent Abstracts of Japan, vol. 16, No. 330 (Jul. 1992) (P-1388).
Patent Abstracts of Japan, vol. 16, No. 511 (Oct. 1992) (P-1441).

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