Method of driving a matrix type liquid crystal display device

Details Method of driving a matrix type liquid crystal display device Method of driving a matrix type liquid crystal display device

1975-02-21

1976-12-07

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340336, G02F 128, G08B 536

Patent

active

039959422

ABSTRACT:
A method of line-by-line scanning liquid crystal dots at the intersections of signal and scanning lines arranged in a matrix form, a signal including a selective voltage enough to excite the liquid crystal dot into illumination and a bias voltage for averaging a cross talk voltage is applied to the signal line. The duration time or pulse width of the selective voltage may be varied in accordance with a desired tone level, so that a display with tone can be achieved while the cross talk voltage is averaged.

REFERENCES:
patent: 3835463 (1972-07-01), Tsukamoto et al.
Sasaki; A., Takagi; T., "Display-Device Research and Developement in Japan" IEEE Trans on Electron Devices vol. ED-20 No. 11, Nov. 1973, pp. 925-33.
Lechner; B. J. et al. "Liquid Crystal Matrix Displays" Proc. of the IEEE vol. 59 No. 11 Nov. 1971, pp. 1566-79.

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