Patent ID: 9557469
Date: 2017-01-31
CPC Classifications: G02B

Claim:
1. A light guide plate, comprising: a main body comprising a light incidence surface, an optical surface, a tapered portion and a flat plate portion, wherein the tapered portion is adjacent to the light incidence surface, and the tapered portion has a first end and a second end opposite to each other, and a thickness of the first end is larger than a thickness of the second end, wherein the flat plate portion extends from the second end along a normal line of the light incidence surface, and a thickness of the flat plate portion is equal to the thickness of the second end; and a plurality of stripe microstructures arranged on the main body, wherein at least one portion of each of the stripe microstructures is located at the optical surface, and trimmed between the light incidence surface and an opposite side of the main body, wherein the portion of each of the stripe microstructures located at the optical surface is parallel to a normal line of the light incidence surface, and a length of each of the stripe microstructures is smaller than a length of the main body.