An image displaying device includes: a display section cyclically switching a plurality of image streams, thereby time-divisionally displaying the plurality of image streams, each of the plurality of image streams being provided for corresponding one of a plurality of shutter mechanisms performing opening-closing operations at timings different from each other; and a dithering processing section performing a dithering process on a plurality of input images by using a plurality of masks, each of the plurality of masks having a pattern of two-dimensionally-arranged grayscale values, the pattern differing from a pattern of another mask, and then supplying a plurality of resultant images produced through the dithering process to the display section. The dithering processing section controls the dithering process in such a manner that the plurality of masks are sequentially and cyclically switched in synchronization with shutter open timings for each of the shutter mechanisms.