Apparatus and method for writing storable images into a matrix-a

Details Apparatus and method for writing storable images into a matrix-a Apparatus and method for writing storable images into a matrix-a

1974-07-29

1976-02-03

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

350160LC, G02F 118

Patent

active

039368157

ABSTRACT:
A matrix-addressed liquid crystal display device including a matrix-addressed display section is provided. The display section comprises a pair of optically transparent plates each of which having on one surface a plurality of parallel strip electrodes optically transparent and deposited through an optically transparent spacer, said pair of plates being parallelly arranged so that the electrodes will be inside and mutually intersect at right angles so as to form row and column electrode groups of a matrix, and a cholesteric phase liquid crystal filled between the respective plates, which liquid crystal being such that when a voltage applied to the electrodes is above a threshold level the molecular axes of the liquid crystal are aligned in the direction of electric field due to the voltage applied. The device utilized a nematic phase to cholesteric phase transition of the liquid crystal occurring when the voltage applied is maintained nearby the threshold level and becomes for a short time period below the threshold level.

REFERENCES:
patent: 3650603 (1972-03-01), Heilmeier et al.
patent: 3652148 (1972-03-01), Wysocki et al.
patent: 3776615 (1973-12-01), Tsokamoto et al.
patent: 3790251 (1974-02-01), Wysocki et al.

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