To make it possible to suppress electric power consumption to a low level and to obtain a satisfactory display grade when an image is displayed in a portion among regions where the pixel exists and the image is not displayed in another region.

When the display region for displaying the image is scanned, a polarity is inverted at every change over of the line to be selected. When the non-display region of not displaying the image is scanned, the number of polarity inversion times is so controlled as to attain ≥1 to <n-1 if the number of the lines belonging to the non-display region is defined as (n). The number of the polarity inversion times of the case the non-display region is scanned is preferably one. Also, the number of the lines to perform positive polarity driving and the number of the lines to perform negative polarity driving are preferably the same or almost same in the number.