Liquid crystal display device

A liquid crystal display device including a liquid crystal panel and displaying a video on the liquid crystal panel based on a video signal that has been received,

• wherein the liquid crystal panel includes a display region on which the video is displayed,
• the display region includes a plurality of sub-regions,
• and the liquid crystal display device further includes:
• a drive unit configured to rewrite a display on at least one of the plurality of sub-regions based on the video signal;
• an identification unit configured to identify one of the plurality of sub-regions on which the drive unit has not rewritten a display for a predetermined number of frames;
• an output unit configured to output an interrupt signal for requesting a video signal for rewriting the display on the sub-region identified by the identification unit;
• and the drive unit rewrites the display on the sub-region identified by the identification unit into a predetermined gray scale display if the display on the sub-region identified by the identification unit has not been rewritten in a predetermined number of frames since the output unit outputs the interrupt signal.