According to an aspect, a display device includes an image display panel and a driver driving the image display panel. The driver implements a first display mode in which a common voltage is a constant DC voltage; polarity of the video signal is inverted per a predetermined number of video signal lines; and the polarity of the video signal per a predetermined number of video signal lines is inverted in a frame unit, and a second display mode in which the common voltage is an AC voltage, polarity of which is inverted in a frame unit; the polarity of the video signal is opposite to the polarity of the common voltage; and the polarity of the video signal is inverted to be opposite to the polarity of the common voltage in a frame unit, and switches between these modes according to a mode switching signal from the outside.