The image display device of the present invention includes: a display
layer that comprises a photochromic compound and whose regions, which
have been irradiated with visible light, can be optically rewritten in a
color corresponding to the color of visible light irradiated thereon; a
light-emitting layer in which multiple luminescent elements are arranged
in a matrix pattern, the elements irradiating visible light to each
different region of the display layer by emitting light; and a drive unit
provided with an obtaining unit that obtains image data. Based on image
data obtained with the obtaining unit, the drive unit drives each
luminescent element corresponding to each pixel of an image according to
the image data to irradiate the visible light of a color corresponding to
each pixel of the image of the image data.