Driving apparatus and method for an active matrix type liquid cr

Details Driving apparatus and method for an active matrix type liquid cr Driving apparatus and method for an active matrix type liquid cr

1994-12-21

1997-01-28

Brier, Jeffery

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 95, G09G 336

Patent

active

055981771

ABSTRACT:
A driving method of the invention is suitable for an active matrix type liquid crystal display apparatus having row and column electrodes. The driving method includes the steps of applying a gate-one pulse for writing data for one line to the column electrodes to each of the row electrodes. The gate-on pulse has a pulse waveform which includes at least one concave portion during a horizontal period.

REFERENCES:
patent: 4651148 (1987-03-01), Takeda et al.
patent: 4795239 (1989-01-01), Yamashita et al.
patent: 4929058 (1990-05-01), Numao
patent: 4932759 (1990-06-01), Toyoro et al.
patent: 5151805 (1992-09-01), Takeda et al.
IBM Technical Disclosure Bulletin, vol. 33, No. 9, Feb. 1991, pp. 309-310, "Gate Drive Scheme for Thin Film Transistor/Liquid Crystal Displays" EPO Search Report.
The March '89 issue of TV Technology, pp. 19-25, N. Takeda et al: "The Principle of a Liquid Crystal Display and the Present State Thereof" with Partial English Translation.

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