Patent ID: 8330686

Claim:
A method of driving a liquid crystal display device comprising a data driver, a liquid crystal panel and a backlight unit supplying light to the liquid crystal panel, the method comprising: supplying a common voltage to the data driver and the backlight unit; turning off the liquid crystal panel by supplying no voltage for the liquid crystal panel in response to a change of an operating mode; and sequentially halting operations of a plurality of sub-circuits after turning off the liquid crystal panel, wherein the plurality of sub-circuits includes a first operational amplifier, a DC-DC converter and a second operational amplifier, which are sequentially connected in series, and wherein sequentially halting operations of the plurality of sub-circuits comprise: halting an operation of the DC-DC converter; holding an operation of the liquid crystal display device for a first holding time after halting the operation of the DC-DC converter; halting an operation of the second operational amplifier after holding the operation of the liquid crystal display device for the first holding time; holding the operation of the liquid crystal display device for a second holding time after halting the operation of the second operational amplifier; and halting an operation of the first operational amplifier after holding the operation of the liquid crystal display device for the second holding time.