Patent ID: 8619209

Claim:
An electro-optical device comprising: an electro-optical panel; a backlight unit disposed so as to face the electro-optical panel; a cover including a window portion opened in correspondence with a pixel region of the electro-optical panel and a first sidewall provided so as to face the side surfaces of the electro-optical panel and the backlight unit, the first sidewall having an engagement hole engaged with the backlight unit; a frame which holds the electro-optical panel and the backlight unit and has a second sidewall provided so as to face the side surfaces of the electro-optical panel and the backlight unit, the second sidewall having a protrusion for guiding the engagement hole to an engagement place; and an engagement protrusion provided so as to protrude from the side surface of the backlight unit, wherein: the cover and the backlight are fixed by engaging the engagement hole with the engagement protrusion, and the protrusion is disposed at a position overlapping with the engagement protrusion in a planer manner.