A display device includes a display panel including a plurality of pixel groups for displaying respective images independently of each other, and a parallax barrier for limiting view ranges of images displayed respectively by the pixel groups such that the view ranges overlap each other in an overlap area. The display device is selectively operable in a first display mode in which a significant image is recognizable when images displayed respectively by the pixel groups are simultaneously observed in the overlap area, and in which a significant image is unrecognizable when the images displayed respectively by the pixel groups are observed individually in the view ranges except for the overlap area, respectively, and a second display mode in which a significant image is recognizable both when the images displayed respectively by the pixel groups are simultaneously observed in the overlap area and when the images displayed respectively by the pixel groups are observed individually in the view ranges except for the overlap area, respectively.