Patent ID: 7538834

Claim:
A display device comprising: a first display unit having a display surface on a front surface thereof; a second display unit having a display surface on a rear surface thereof, the second display unit being smaller than the first display unit; an illumination unit interposed between the first display unit and the second display unit and illuminating both the first display unit and the second display unit with light, the illumination unit having a first surface facing the first display unit and a second surface facing away from the first display unit; a transflector interposed between the light-guiding member and the second display unit, the transflector being made of dielectric multilayer film having predetermined optical transmissive and reflective characteristics; and an optical sheet disposed at the second surface of the illumination unit, the optical sheet being formed with an aperture, the aperture having a width that corresponds more closely to a width of the second display unit than to a width of the first display unit.