Method for driving simple matrix-type liquid crystal display

Details Method for driving simple matrix-type liquid crystal display Method for driving simple matrix-type liquid crystal display

1996-09-10

1998-12-15

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 87, G09G 336

Patent

active

058502033

ABSTRACT:
A simple matrix-type liquid crystal display is driven by a frame signal for indicating the starting point of each frame on a screen, a latch clock signal for latching an input data signal in a unit of a horizontal line of the liquid crystal display, and a modulation signal for controlling polarity of a voltage applied to each cell of the liquid crystal display. The phase difference between the modulation signal and the frame signal is controlled to lower and minimize flicker intensity. The reliability of the liquid crystal cell is preserved and flicker is prevented so that the picture quality is improved and life of the simple matrix-type liquid crystal display is extended.

REFERENCES:
patent: 4745485 (1988-05-01), Iwasaki
"The explanation of Flicker in a Standard LCD"; 21st Japanese Liquid Crystal Forum Lecture, Sep. 10, 1995.

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