Photoconductor control of electro-optically variable display cel

Details Photoconductor control of electro-optically variable display cel Photoconductor control of electro-optically variable display cel

1980-10-24

1984-02-21

Corbin, John K.

350333, 350336, G02F 113

Patent

active

044326114

ABSTRACT:
Light transmitted by an electro-optically variable cell on application of a voltage actuates a photoconductor which controls the voltage. Voltage is, for example, applied across both a liquid crystal and a photoconductor, control then deriving from a relative change in impedance of the liquid crystal and photoconductor. High contrast and a hysteresis effect permit multi-cell adaptation using a high order of multiplexed addressing.

REFERENCES:
patent: 3551026 (1970-12-01), Heilmeier
patent: 3705310 (1972-12-01), Wild
patent: 4110014 (1978-08-01), Yevick

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