Active matrix liquid crystal display device

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

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G09G 336

Patent

active

059203005

ABSTRACT:
It is intended to increase the display speed in an active matrix liquid crystal display device. In displaying a moving picture, different voltages are applied in two steps to each pixel, i.e., each liquid crystal cell. More specifically, after a high voltage is applied first, and then a low voltage is applied at a prescribed timing, so that the rising characteristic of the liquid crystal is improved. In a specific configuration, thin-film transistors are provided on both sides of a pair of electrodes between which the liquid crystal is interposed. A voltage for accelerating the liquid crystal operation is applied from one of the two thin-film transistors, and the same voltage as in the case of displaying a still picture is applied from the other thin-film transistor.

REFERENCES:
patent: 4830467 (1989-05-01), Inoue et al.
patent: 4873516 (1989-10-01), Castleberry
patent: 5111319 (1992-05-01), Morris
patent: 5233417 (1993-08-01), Nouso
patent: 5351145 (1994-09-01), Miyata et al.
patent: 5576737 (1996-11-01), Isozaki et al.

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