Apparatus for driving liquid crystal display panel for different

Details Apparatus for driving liquid crystal display panel for different Apparatus for driving liquid crystal display panel for different

1994-02-01

1995-04-11

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 99, 345132, 345202, G09G 106

Patent

active

054063086

ABSTRACT:
In an apparatus for driving a liquid crystal display panel having signal lines and scan lines, the operation of a signal line driving circuit for sequentially driving the signal lines is started by a horizontal start timing signal which is obtained by delaying a horizontal synchronization signal with a first time period. Also, the operation of a scan line driving circuit for sequentially driving the scan lines is started by a vertical start timing signal which is obtained by delaying a vertical synchronization signal with a second time period. The first time period and the second time period are changed in accordance with a size of one frame of a video signal.

REFERENCES:
patent: 4990902 (1991-02-01), Zenda
patent: 5031118 (1991-07-01), Morizot
Patent Abstracts of Japan, vol. 013, No. 496 (P-956) Nov. 9, 1989.
Patent Abstracts of Japan, vol. 015, No. 075 (P-1169) Feb. 21, 1991.
Patent Abstracts of Japan, vol. 015, No. 349 (P-1247) Sep. 4, 1991.
Patent Abstracts of Japan, vol. 015, No. 360 (P-1250) May 25, 1993.
Patent Abstracts of Japan, vol. 017, No. 267 (P-1543) Jun. 11, 1989.

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