Power consumed in a liquid crystal display device owing to inversion driving is reduced. A control circuit generates a polarity control signal whose potential level is switched at intervals of two or more frame periods. A data line driver circuit processes an image signal to generate a data signal. The data signal has a polarity corresponding to the potential level of the polarity control signal. The control circuit stops output of the image signal to the data line driver circuit when determining that there is no motion in data of the image signal. The control circuit controls a scan line driver circuit and the data line driver circuit, thereby performing, in response to a change in the potential level of the polarity control signal, rewriting of a display portion at least in one frame period during a period in which the output of the image signal is stopped.