Patent ID: 8134530

Claim:
A liquid crystal display device comprising: a liquid crystal display panel having a plurality of pixels, a plurality of video lines and a plurality of scan lines; a video line drive circuit which supplies each of the video lines with a video voltage and a black image voltage; a scan line drive circuit which supplies each of the scan lines with a video selection scan voltage for writing the video voltage and a black image selection scan voltage for writing the black image voltage; and a display control circuit which controls the video line drive circuit and the scan line drive circuit, wherein the scan line drive circuit, as well as supplying the scan lines, in order, with the video selection scan voltage, supplies the scan lines, in order, with the black image selection scan voltage for writing the black image voltage, and supplies the scan lines with the video selection scan voltage and the black image selection scan voltage alternately, the video line drive circuit supplies each of the video lines with the video voltage when the scan line drive circuit is supplying the scan lines with the video selection scan voltage, and supplies each of the video lines with the black image Voltage when the scan line drive circuit is supplying the scan lines with the black image selection scan voltage, and the display control circuit has a black image insertion control circuit which, based on a video brightness obtained with the video voltage in one frame, changes a position of a scan line to be supplied next with the black image selection scan voltage after a scan line has been supplied with the video selection scan voltage, changing an insertion ratio of the black image.