| 摘要 |
An LCD device is provided to supply the power voltage of stable DC(Direct Current) components to a common voltage generator and a gamma reference voltage generator in a DC-DC converter, thereby generating a stable common voltage and a gamma reference voltage to improve the display quality of the LCD device. A power voltage generator(101) receives an input power voltage to generate a voltage which is a base of generating a voltage for driving an LCD(Liquid Crystal Display) panel. A ripple cancellation unit(102) cancels ripple included into the voltage outputted from the power voltage generator. A common voltage generator(103) generates a common voltage using the voltage outputted from the ripple cancellation unit. A gamma reference voltage generator(104) generates a gamma reference voltage using the voltage outputted from the ripple cancellation unit. |
