Liquid crystal display device having an improved precharge...

Details Liquid crystal display device having an improved precharge... Liquid crystal display device having an improved precharge...

2005-12-27

2005-12-27

Wu, Xiao (Department: 2674)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S098000, C345S100000

Reexamination Certificate

active

06980190

ABSTRACT:
A liquid crystal display device includes a driver circuit for outputting a charging voltage at a beginning of a horizontal scanning period and then a gray scale voltage corresponding to a display data to a video signal line. The liquid crystal display device is driven by inverting a polarity of the gray scale voltage on a pixel electrode with respect to a common voltage on a common electrode every N lines of scanning lines, where N≧2 and by making a first charging time of the charging voltage corresponding to a first line of N lines of the scanning lines scanned immediately after inversion of the polarity of the gray scale voltage different from a second charging time of the charging voltage corresponding to a second line of the N lines scanned immediately succeeding the first line.

REFERENCES:
patent: 5604511 (1997-02-01), Ohi
patent: 6307532 (2001-10-01), Aoki
patent: 6342876 (2002-01-01), Kim
patent: 6492970 (2002-12-01), Furuhashi et al.
patent: 6549187 (2003-04-01), Matsubara et al.
patent: 6628253 (2003-09-01), Hiroki
patent: 6842161 (2005-01-01), Song et al.
patent: 2004/0150612 (2004-08-01), Okuzono et al.

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