Patent ID: 9632231
Date: 2017-04-25
CPC Classifications: G02B

Claim:
1. A light guide plate, comprising a light exit surface, a reflection surface opposite to the light exit surface, and at least one light incidence surface connecting to the light exit surface and the reflection surface, wherein the reflection surface comprises a plurality of minute projection structures projecting toward interior of the light guide plate, each of the minute projection structures comprising at least two side faces coated with a high reflectivity material, the at least two high reflectivity material coated side faces forming at least one included angle pointing toward the at least one light incidence surface, the minute projection structures having a distribution density that is decreased with an increase of a distance thereof from the light sources; and the light guide plate further comprises two side surfaces connecting to the light exit surface, the reflection surface, and the at least one light incidence surface, the two side surfaces of the light guide plate respectively forming two included angles that are less than 90° with respect to the at least two high reflectivity material coated side faces of each of the minute projection structures; wherein the light guide plate comprises two opposite light incidence surfaces; the minute projection structures each comprise four high reflectivity material coated side faces; and the four high reflectivity material coated side faces respectively form included angles that are less than 90° with respect to the two side surfaces of the light guide plate.