Patent ID: 8259059

Claim:
A driving system for a liquid crystal display device, comprising: a system unit to supply image data to be displayed on a liquid crystal panel, the system unit generating a system dimming signal; an inverter unit to control luminance of a backlight unit, the inverter unit receiving the system dimming signal; and a control unit to control display of images on the liquid crystal panel, the control unit receiving the system dimming signal from the inverter unit and outputting a control dimming signal to the inverter unit, wherein the inverter unit adjusts luminance of the backlight unit using the control dimming signal input from the control unit, and wherein the control unit includes a timing controller including a data conversion portion and a dimming signal modulation portion, the data conversion portion converting grey levels of an image data and the dimming signal modulation portion modulating the system dimming signal to output the control dimming signal, a first multiplexer to select an input terminal of the timing controller for the system dimming signal, a second multiplexer to select an output terminal of the timing controller for the control dimming signal, and a selection signal generation portion to generate a selection signal based on a type of the system dimming signal.