Drive method and drive unit for a liquid crystal display device

Details Drive method and drive unit for a liquid crystal display device Drive method and drive unit for a liquid crystal display device

1995-11-30

1998-05-19

Bayerl, Raymond J.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 53, 345 58, 345 97, 345 98, G09G 336

Patent

active

057541523

ABSTRACT:
A drive method and a drive unit for a liquid crystal display unit which reduce the variation in the effective value of an applied voltage dependent upon the display patterns, are inexpensive, and enhance the display quality are provided. There is provided a segment-side liquid crystal drive circuit 2 which incorporates an output control section 26 where an output correction period is provided in an output of the segment-side liquid crystal drive circuit 2 at intervals of a 1-line scanning period, and during the output correction period a display voltage level of the output is set to an OFF display voltage level when the display voltage level of the output is in an ON display level and to an ON display voltage level when the display voltage level of the output is in an OFF display level.

REFERENCES:
patent: 5296877 (1994-03-01), Takeda et al.
patent: 5398043 (1995-03-01), Takeda et al.
patent: 5442370 (1995-08-01), Yamazaki et al.
patent: 5561442 (1996-10-01), Okada et al.
patent: 5602560 (1997-02-01), Ikeda
patent: 5619221 (1997-04-01), Hirai et al.

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