Matrix liquid crystal display using liquid crystal hysteresis ch

Details Matrix liquid crystal display using liquid crystal hysteresis ch Matrix liquid crystal display using liquid crystal hysteresis ch

1995-10-03

1999-06-29

Liang, Regina

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 94, 345208, G09G 336

Patent

active

059174668

ABSTRACT:
A matrix liquid crystal display is capable of displaying a still displayed picture by using a hysteresis characteristic of an antiferrodielectric liquid crystal medium or the like. The picture is displayed by applying scan signals from a row driving circuit and data signals from a column driving circuit to a matrix liquid crystal display having an antiferrodielectric liquid crystal medium or the like. When a voltage for stilling the display of the picture is provided to a still signal input terminal, a timing circuit interrupts the application of a clock signal output from a control circuit to the row driving circuit in response to a generated vertical synchronizing signal. When the clock signal is stopped, a holding voltage is applied to each pixel of the liquid crystal display and the displayed picture is put into a still state by the hysteresis characteristic of the antiferrodielectric liquid crystal medium or the like.

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T.C.Chieu et al, "High-Resolution and High-Speed Ferroelectric Liquid-Crystal Shutter Array Print Head", IEEE Transacction on Electron Devices 38(1991) Jun., No. 6, pp. 1316-1323.
Patent Abstract of Japan, vol. 17 No. 308 (P-1555) re JP-A 5027718.

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