Patent ID: 7855764

Claim:
An electro-optical device, comprising: a light source; a light guiding plate extending in a first direction and having a first side and a second side opposite the first side, the light guiding plate consisting of a first major portion and a second major portion, the first major portion having a first surface inclined on the first side relative to the second major portion, the first major portion becoming gradually thicker nearer the light source and the second major portion having a constant thickness; a first displaying panel arranged on the second side of the light guiding plate and extending along the light guiding plate in the first direction; a second displaying panel arranged on the first side of the light guiding plate and extending along the light guiding plate in the first direction; and a frame receiving the light guiding plate therein, the frame having a frame protrusion covering the first surface of the first major portion of the light guiding plate on the first side along an exterior profile of the light guiding plate, wherein an end portion of a displaying region of the second displaying panel nearest the light source is arranged nearer the light source in the first direction than an end portion of a displaying region of the first displaying panel nearest the light source.