Method for driving liquid crystal display unit

Details Method for driving liquid crystal display unit Method for driving liquid crystal display unit

1996-04-10

1997-09-09

Wu, Xiao

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 96, 345 90, G09G 336

Patent

active

056661339

ABSTRACT:
Disclosed is a method for driving a liquid crystal display unit, in particular, a method for driving an active matrix type liquid crystal display unit using a thin-film transistor as a switching element. According to the drive method, a plurality of scanning signal power voltages of which levels vary in synchronization with inversion in polarity of an image signal are input to a scanning signal supply circuit, and any of the plural scanning signal power voltages is selected to serve as a scanning signal. Otherwise, some scanning signal power voltages of which levels vary in synchronization with inversion in polarity of the image signal and some scanning signal power voltages of which levels are invariable are input to the scanning signal supply circuit, and any of the plural scanning signal power voltages is selected to serve as a scanning signal.

REFERENCES:
patent: 4393380 (1983-07-01), Hosokawa
patent: 4404555 (1983-09-01), Long
patent: 4571584 (1986-02-01), Suzuki
patent: 4870398 (1989-09-01), Bos
patent: 4928095 (1990-05-01), Kawahara
Floyd, "Electronic Devices", 1984, p. 26.

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