Patent ID: 8872809

Claim:
A liquid crystal display apparatus comprising: a plurality of video signal lines for transmitting video signals representing an image to be displayed; a plurality of scanning signal lines intersecting the plurality of video signal lines; a video signal line drive circuit that applies the video signals to the plurality of video signal lines; a scanning signal line drive circuit that selectively drives the plurality of scanning signal lines every horizontal scanning period; a plurality of pixel electrodes arranged in a matrix form at respective intersection portions of the plurality of video signal lines and the plurality of scanning signal lines; a common electrode arranged to face the plurality of pixel electrodes, so as to apply a voltage between the plurality of pixel electrodes and the common electrode; a common electrode drive circuit that drives the common electrode and includes a common electrode potential generating unit that generates a first potential, a second potential, a third potential group, and a fourth potential group, the first potential being a low-level side potential to be provided to the common electrode, the second potential being a high-level side potential to be provided to the common electrode, the third potential group including one or more low-level side potentials having a higher level than the first potential, to be provided to the common electrode, and the fourth potential group including one or more high-level side potentials having a lower level than the second potential, to be provided to the common electrode, wherein the common electrode drive circuit, alternately provides, during a first period of a horizontal scanning period, the first potential and the second potential to the common electrode every horizontal scanning period, the horizontal scanning period including the first period and a second period, and alternately provides, during the second period, the potentials included in the third potential group and the potentials included in the fourth potential group to the common electrode in each horizontal scanning period; a third potential selecting unit that selects any of the potentials included in the third potential group, based on first setting information which can be set externally; and a fourth potential selecting unit that selects any of the potentials included in the fourth potential group, based on second setting information which can be set externally, wherein during the second period, the common electrode drive circuit provides the potential selected by the third potential selecting unit and the potential selected by the fourth potential selecting unit to the common electrode.