Patent ID: 7852303

Claim:
A drive circuit of a liquid crystal display comprising: a data latch circuit that latches a digital video signal; a level shift circuit that level shifts a digital video signal latched by the data latch circuit; a D/A converter that converts a digital video signal that is level shifted by the level shift circuit into an analog video signal, the analog video signal comprising a positive polarity analog video signal and a negative polarity analog video signal, the positive polarity analog video signal and the negative polarity analog video signal having polarities different from reference voltages; and an output control portion that simultaneously outputs the positive polarity analog video signal and the negative polarity analog video signal to data lines of a liquid crystal display based on a selection signal, wherein the output control portion consecutively outputs the positive polarity analog video signal in time-sharing manner to a first plurality of data lines during a prescribed period of a horizontal period, and consecutively outputting the negative polarity analog video signal in a time-sharing manner to a second plurality of data lines during the prescribed period.