| 摘要 |
<p>Provided is a light-guiding plate with which it is possible to emit light having a high efficiency of use and low unevenness in brightness, as well as to obtain a brighter distribution of light near the center part of a screen than at the edge part. A light-guiding plate comprises two or more layers which overlap in a direction approximately perpendicular to the light emission plane and which have differing concentrations of scattering particles. The thickness of the two or more layers is changed in the direction approximately perpendicular to the light emission plane, and the composite particle concentration of the light-guiding plate is thereby changed so as to have a first local maximum and a second local maximum in a direction approximately perpendicular to a plane where light enters, wherein the first local maximum is closer to the plane where light enters than the second local maximum, and the second local maximum is both further from the plane where light enters than the first local maximum, and is larger than the first local maximum.</p> |
