disclosed is a scanning image display device for displaying an image on a plurality of display screens . the image display device includes a light source , a scanner for two - dimensionally scanning with light from the light source , and a controller which is electrically connected with the light source and the scanner . the controller controls the light source and the scanner to form an image on the surfaces to be scanned . the scanner is configured to be capable of scanning the independent plurality of scanning surfaces with the light from the light source .