A three-dimensional video is appropriately displayed. A frame processing device includes: a frame extraction module configured to sequentially extract image frames for left eye and for right eye from a three-dimensional video signal; a frame group generation module configured to alternately generate frame groups for left eye and for right eye based on the extracted image frames for left eye and for right eye; a frame storage module configured to sequentially store the alternately generated frame groups for left eye and for right eye; a video processing module configured to sequentially extract the image frames from the frame storage module, and sequentially rewriting a display screen; and a display invalidation module configured to invalidate the display on the display screen during periods of rewriting the image frame for left eye to that for right eye and the image frame for right eye to that for left eye.