Patent ID: 8054263
Filing Date: 2011-11-08
Classification: G09G

Abstract:
1. A liquid crystal display comprising: a liquid crystal panel comprising a pixel array, a short-circuit test circuit, and a control circuit, the short-circuit test circuit and the control circuit cooperatively forming a discharging circuit, the control circuit comprising a first direct current input terminal, a second direct current terminal, a switching circuit and a charge storage circuit, the short-circuit test circuit, the switching circuit and the charge storage circuit being connected to ground in series, the switching circuit comprising a p-channel metal oxide semiconductor field effect transistor (P-MOSFET) and a grounding resistor, a gate electrode of the P-MOSFET being connected to the first direct current input terminal, and being further connected to ground via the grounding resistor, a drain electrode of the P-MOSFET being connected to the short-circuit test circuit, and a source electrode of the P-MOSFET being connected to the charge storage circuit and the second direct current input terminal; a gate driving circuit configured for scanning the liquid crystal panel; and a data driving circuit configured for providing gray-scale voltages to the liquid crystal panel when the liquid crystal panel is scanned; wherein when the liquid crystal display is powered off, electric charge stored in the liquid crystal panel is discharged through the discharging circuit.