Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-03-06
1999-11-02
Wu, Xiao
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345205, 345 90, 345 92, G09G 336
Patent
active
059779403
ABSTRACT:
Each pixel of a liquid crystal display device comprises a switching device for selecting a data signal, a memory portion for storing the data signal selected by the switching device and outputting an analog signal corresponding to the data signal, and a circuit for supplying an AC voltage corresponding to the analog signal to the liquid crystal layer. The liquid crystal layer is driven with a data signal stored in the memory portion or with an AC voltage corresponding to an analog signal corresponding to the data signal. With the signal stored in the memory portion, an AC voltage whose effective value or average value is controlled is supplied to the liquid crystal layer. Thus, unless a picture on the display is changed, since it is not necessary to supply the data signal, the peripheral driving circuit can be stopped. Consequently, although a picture is displayed in gradation mode, the power consumption can be remarkably reduced.
REFERENCES:
patent: 4514727 (1985-04-01), Van Antwerp
patent: 5091722 (1992-02-01), Kitajima et al.
patent: 5206633 (1993-04-01), Zalph
patent: 5339090 (1994-08-01), Crossland et al.
patent: 5396351 (1995-03-01), Gessel
patent: 5430460 (1995-07-01), Takabatake et al.
patent: 5528256 (1996-06-01), Erhart et al.
patent: 5600345 (1997-02-01), Dingwall et al.
patent: 5646643 (1997-07-01), Hirai et al.
patent: 5684501 (1997-11-01), Knapp et al.
patent: 5686932 (1997-11-01), Tomita
A. Juliana et al.; "Thin-Film Polysilicon Devices for Flat-Panel Display Circuitry", SID 82 Digest, pp. 38-39, May 11, 1992.
Akiyama Masahiko
Hioki Tsuyoshi
Itoh Goh
Motai Tomonobu
Okumura Haruhiko
Kabushiki Kaisha Toshiba
Nguyen Francis
Wu Xiao
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