Ferroelectric smectic liquid crystal device

Details Ferroelectric smectic liquid crystal device Ferroelectric smectic liquid crystal device

1990-03-19

1993-04-06

Sikes, William L.

Optical: systems and elements

Optical computing without diffraction

359 78, G02F 113

Patent

active

052008487

ABSTRACT:
A ferroelectric smectic liquid crystal device having an improved impact resistance and an improved contrast is provided by using a pair of substrates provided with uniaxial alignment axes which are parallel and identical in direction with each other. A ferroelectric smectic liquid crystal is disposed between the pair of substrates so as to assume a higher-temperature alignment state and a lower-temperature alignment state on temperature decrease in its ferroelectric smectic phase placed in a bistable alignment state. The ferroelectric smectic liquid crystal is further placed in the lower-temperature alignment state which is characterized by having an inclination of forming a connected pair of a lightning defect and a hair pin defect coming after the lightning defect.

REFERENCES:
patent: 4932758 (1990-06-01), Hanyu et al.

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