Liquid crystal display device and driving method thereof

Details Liquid crystal display device and driving method thereof Liquid crystal display device and driving method thereof

2006-03-21

2006-03-21

Tran, Henry N. (Department: 2674)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S090000, C345S092000, C345S099000

Reexamination Certificate

active

07015903

ABSTRACT:
A liquid crystal display device and a driving method thereof wherein a change in a charge rate of a thin film transistor compensates for an externally applied frequency variation upon driving of the liquid crystal display device so as to improve the picture quality. In the device, a timing controller receiving control signals from a host system. A frequency detector is connected to either the input terminal or the output terminal of the timing controller to detect the control signals. A compensation voltage setting part compensates for the driving voltage in response to the control signals detected from the frequency detector so as to adjust a charge time of each thin film transistor. A voltage converter generates a compensation voltage set by the compensation voltage setting part to deliver the compensation voltage to a liquid crystal display panel. Accordingly, the common voltage and/or the gate high voltage, changed in accordance with an extremely applied frequency variation, are set to optimum values and thus are compensated so that a constant picture quality can be maintained irrespectively of such a frequency variation.

REFERENCES:
patent: 5604511 (1997-02-01), Ohi
patent: 5748169 (1998-05-01), Okumura et al.
patent: 5798740 (1998-08-01), Bitzakidis et al.
patent: 5977940 (1999-11-01), Akiyama et al.
patent: 6456268 (2002-09-01), Takeda
patent: 6522318 (2003-02-01), Kumagawa et al.
patent: 6525720 (2003-02-01), Baek
patent: 6680722 (2004-01-01), Hiraki et al.
patent: 6741229 (2004-05-01), Yanagi et al.

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