Liquid crystal display device, driving circuit, driving...

Details Liquid crystal display device, driving circuit, driving... Liquid crystal display device, driving circuit, driving...

2005-05-24

2005-05-24

Liang, Regina (Department: 2674)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S089000, C345S092000, C345S100000, C345S211000, C345S690000, C345S096000, C345S209000

Reexamination Certificate

active

06897845

ABSTRACT:
The voltage swing of a data signal, which is supplied to a data line, is maintained to be small, thereby reducing the power consumption. When a scanning signal supplied to a scanning line is set to an on-voltage, a data signal with a voltage, depending on the density and depending on the writing polarity, is applied to a data line. In this case, a TFT is turned on. Thus, a liquid crystal capacitor and storage capacitor store the charge corresponding to the voltage of the data signal. Then, the scanning signal is set to an off-voltage to turn the TFT off, and the voltage of the other terminal of the storage capacitor is raised from the low-level of capacitor voltage to the high-level, and the charge corresponding to the raised voltage amount is redistributed to the liquid crystal capacitor. Thus, the effective voltage value applied to the liquid crystal capacitor can correspond to the voltage swing of the data signal or more.

REFERENCES:
patent: 5657039 (1997-08-01), Mizukata et al.
patent: 5666133 (1997-09-01), Matsuo et al.
patent: 5706023 (1998-01-01), Nagata et al.
patent: A-2-913 (1990-01-01), None
patent: A-4-145490 (1992-05-01), None
patent: B2-2568659 (1996-10-01), None

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