An image display device according to the exemplary embodiment includes: an RGB laser diode that outputs a light beam; a laser driver that drives the RGB laser diode based on input image data; a scanning mirror that scans the light beam by reflecting the light beam at an angle according to a drive voltage; and a scanner control unit that applies a bias voltage to the scanning mirror based on an angle with respect to a horizontal plane, or a static angle of the scanning mirror that is at a standstill when the drive voltage is not applied.