A display device displays corrected externally-supplied video signals, and includes plural pixels, a scanning driver and a signal driver which applies display voltages to signal lines coupled to the pixels. The signal driver includes a first converter which converts a format of the externally supplied video signals into a first format, a memory which stores the video signals from the first converter temporarily, a correction circuit which computes correction values based upon the video signals from the first converter and the video signals in the memory and corrects the video signals from the first converter based upon the correction values, and a second converter which converts the first format of the video signals from the correction circuit to a format of the display voltages. The memory stores the correction values also, and the correction circuit corrects the video signals in the memory based upon the correction values in the memory.