Discharging apparatus for liquid crystal display

Details Discharging apparatus for liquid crystal display Discharging apparatus for liquid crystal display

2005-06-07

2005-06-07

Liang, Regina (Department: 2674)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S214000, C345S098000, C345S100000

Reexamination Certificate

active

06903734

ABSTRACT:
A discharging apparatus for a liquid crystal display is provided for substantially reducing a residual image upon power-off. In the apparatus, a gate driver integrated circuit selectively applies first and second gate voltages to gate lines of the display. A discharge circuit is coupled to the gate driver integrated circuit and senses a power-off state of a power supply line. When a power-off state is sensed, a short-circuit if formed between the first gate voltage supply line and the second gate voltage supply line, thereby discharging voltages on the gate lines. Accordingly, a gate low voltage relative gate high (pixel turn-on) voltage is discharged upon power-off to define a discharge path via the gate line, thereby rapidly discharging electric charges charged in the liquid crystal display panel.

REFERENCES:
patent: 5572735 (1996-11-01), Tanikawa
patent: 5793346 (1998-08-01), Moon
patent: 5945970 (1999-08-01), Moon et al.
patent: 6064360 (2000-05-01), Sakaedani et al.
patent: 10-282471 (1998-10-01), None

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