Patent ID: 7123230

Claim:
A system for reducing an OFF-current in a thin film transistor of a liquid crystal display device, comprising: gate and data lines crossing each other; a pixel thin film transistor including gate, source and drain electrodes, the gate electrode connected to the gate line and the source electrode connected to the data line; a liquid crystal capacitor connected to the drain electrode of the pixel thin film transistor; a first switch thin film transistor connected to a first end of the data line; a second switch thin film transistor connected to a first end of the gate line; a first voltage source electrically connected to the drain electrode of the pixel thin film transistor; a second voltage source connected to a source electrode of the first switch thin film transistor; a third voltage source connected to gate electrodes of the first and second switch thin film transistors; and a fourth voltage source connected to a source electrode of the second switch thin film transistor.