In the upper half and a lower half of a display area, scanning is implemented such that the directions of scan selection operations are different from each other. The upper half of the panel is scanned from the upper end to the center of the screen, and at the same time the lower half of the panel is scanned from the lower end to the center of the screen. Control is performed such that the difference between the start time of the scan selection operation of the upper half of display area and the start time of the scan selection operation of the lower half of the display area is scanning time of at least one or more scan lines. The configuration avoids a problem that a bright line is generated momentarily on the boundary line of the upper half and the lower half of the panel can be avoided.