Patent ID: 7559684

Claim:
An electro-optical device comprising: an electro-optical panel; a light source that emits light that enters the electro-optical panel; an optical waveguide board that guides the light emitted from the light source toward the electro-optical panel; a flexible printed circuit board on which the light source is mounted and a chassis that houses the electro-optical panel and the optical waveguide board, wherein the flexible printed circuit board is overlapped to the optical waveguide board and a part of the chassis, the flexible printed circuit board being adhered to the optical waveguide board by an adhesive member and being adhered to the chassis by the same adhesive member in such a manner that the light source is positioned to be opposed to an edge face of the optical waveguide board, and a concave portion is formed in the optical waveguide board at least at a position where the adhesive member is provided.