A display device includes an image display panel on which pixels are arranged, a backlight which lights the image display panel from a rear of the image display panel, a first device which controls the backlight, and a second device which controls the image display panel. The first device generates an image signal, outputs the image signal to the second device, determines a light source lighting amount of the backlight on the basis of the image signal by blocks obtained by dividing a display surface of the image display panel and luminance distribution information on the backlight stored in advance, and controls the backlight by the light source lighting amount. The second device acquires the image signal, converts the image signal to a display signal for controlling display of the image display panel, and controls the image display panel.