Patent ID: 7186014

Claim:
A double-faced lighting device for electronic equipment, wherein the electronic equipment has a large display panel and a small display panel provided in back-to back relationship on opposite sides of a case, with the large display panel adjacent a first aperture in the case and the small display panel adjacent a second aperture in the case, the lighting device comprising: a light guide plate provided in the case and having light emitting surfaces on opposite faces thereof; a light source provided at an edge of the light guide plate as an edge light; at least one brightness enhancement film having a plurality of prisms and disposed adjacent to both light emitting surfaces of the light guide plate; a light absorbing sheet disposed within the case between the small display panel and an adjacent light emitting surface for absorbing incident light from the light guide plate, the light absorbing sheet having an aperture provided adjacent the second aperture in the case such that light from the light emitting surface of the light guide plate passes through the aperture in the light absorbing sheet and the aperture in the case to illuminate the small display panel.