| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a light guide plate which improves luminosity and a well-balance degree, and is hardly broken.SOLUTION: A light guide plate comprises: a main body 120 including a first main surface 124, a second main surface 126 which opposes the first main surface 124, and a light incident face 122 which is connected to the first main surface 124 and the second main surface 126; and a plurality of trapezoidal approximation structures 140 which are arranged at least at one face of the first main surface 124 and the second main surface 126, and extend along the other face which is apart from the light incident face 122 at a side which is near the light incident face 122. A width of each of the plurality of the trapezoidal approximation structures 140 is gradually increased toward the other end apart from the light incident face 122 rather than an end which is near the light incident face 122, and each of a plurality of the trapezoidal approximation structures 140 includes a plane face and two side faces which are connected to two side-sides of the plane face.</p> |
