| 摘要 |
A surface light source includes: a light guiding plate including, in a main region, a light emitting surface and a back surface facing the light emitting surface; and a light source being provided on a back surface side in an end region of the light guiding plate, the light source emitting light so that the light emitted from the light emitting surface. The surface light source further includes: an inclining surface being formed along an end section on the light emitting surface side in the end region so that the light guiding plate becomes thinner toward the end section; a reflecting member covering the inclining surface; and a light incident end face being provided on the back surface side and extending along the end section, the inclining surface being formed so that light entering the light incident end face at a right angle is totally reflected by the light incident end face after being reflected by the inclining surface or the reflecting member. With this arrangement, it is possible to realize a surface light source that is larger in size and thinner in thickness, and a display device having a narrower frame.
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