An image display device includes a display panel, a barrier panel, a light projecting unit, and a controller. The display panel is configured so as to include a first display region. The barrier panel is configured so as to include a first barrier region. The light projecting unit is configured so as to include a first light emitting region. The controller is configured so that a portion located in the first display region is displayed as one parallax image frame including two subframes, and configured so that a light quantity of light emitted from the first light emitting region is reduced during a frame change period including a timing of changing display from the parallax image frame to a new parallax image frame.