Liquid crystal device with a smectic chiral liquid crystal and w

Details Liquid crystal device with a smectic chiral liquid crystal and w Liquid crystal device with a smectic chiral liquid crystal and w

1988-12-01

1990-02-27

James, Andrew J.

350350S, G02F 1133

Patent

active

049040570

ABSTRACT:
A liquid crystal device can be driven by application of unipolar electric field to a ferroelectric liquid crystal layer. Without application of electric field, isotropic characteristics is observed because of a spiral arrangement of liquid crystal molecules. Under application of electric field, a birefringence is observed because of liquid crystal molecules aligned in one direction. The device can be driven by applying an electric field in one direction and removing the electric field, by using a rectifier in series with each pixel.

REFERENCES:
patent: 3921162 (1975-11-01), Fukai et al.
patent: 4129983 (1978-12-01), Yamazaki
patent: 4548474 (1985-10-01), Nagae et al.
patent: 4597162 (1986-07-01), Johnson et al.
patent: 4752118 (1988-07-01), Johnson
patent: 4808983 (1989-02-01), Benjamin et al.
patent: 4823078 (1989-04-01), Mohebban

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