Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2004-03-24
2008-08-05
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C349S114000
Reexamination Certificate
active
07408541
ABSTRACT:
When an input power supply fed to a liquid crystal display device is cut off, a gate-on power supply for driving a gate line of a display part is automatically changed from a first power supply that reduces luminance inclination unevenness in the display part to a second power supply that causes residual charges in liquid crystal to be discharged. Consequently, at a normal driving time, a good quality display image with reduced unevenness in luminance inclination can be obtained, and at a power-off time, the display due to the residual charges of the liquid crystal is cleared so that an after image can be prevented from being visible.
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Chow Yuk
Greer Burns & Crain Ltd.
Mengistu Amare
Sharp Kabushiki Kaisha
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