Patent ID: 8823882
Filing Date: 2014-09-02
Classification: G02B,G02F,H04N

Abstract:
1. A backlight device, comprising: a light source; a light guide plate that guides light from the light source in a prescribed propagation direction and that emits the light to an object to be illuminated; a reflective sheet that is disposed on a side of the light guide plate that is opposite to the object to be illuminated and that reflects light from the light guide plate back towards the light guide plate; an opposing surface that is arranged so as to oppose the reflective sheet on a side of the reflective sheet that is opposite to the light guide plate, the opposing surface having prescribed recesses and protrusions formed thereon; and a cushioning member that is arranged between the reflective sheet and the opposing surface, wherein an opening is formed in the cushioning member at locations corresponding to the recesses and protrusions, wherein the light guide plate has a light exiting surface that emits light to the object to be illuminated, and a non-light exiting surface that is opposite to the light exiting surface and that has light diffusing parts formed thereon that diffuse light, and wherein the light guide plate has a size in a direction perpendicular to the light exiting surface of 4 mm or less.