Patent ID: 7205971
Filing Date: 2007-04-17
Classification: G09G

Abstract:
1. A driving circuit of a liquid crystal display device, the liquid crystal display device comprising gate and data lines, a thin film transistor connected to the gate and data lines and a liquid crystal capacitor connected to the thin film transistor, wherein a voltage is applied to the liquid crystal capacitor from the thin film transistor, the driving circuit comprising: a gate driving unit to generate a gate signal to be applied to the gate line; a source driving unit to generate a data signal to be applied to the data line; a gamma power source unit to generate a gamma reference voltage; a common voltage unit to generate a common voltage to the liquid crystal capacitor; a discharging signal unit to generate a discharging enable signal having a value corresponding to whether a power of the liquid crystal display device is on or off; and a multiplexer to select between connecting a voltage of the common voltage unit to the source driving unit and connecting a voltage of the gamma power source unit to the source driving unit according to the discharging enable signal.