Patent ID: 9703033
Date: 2017-07-11
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, and with a distance of the minute projection structure from a closest light source getting shorter, the at least one included angle formed thereby gets smaller; wherein the plurality of minute projection structures are arranged into groups at different distances from the at least one light incidence surface, each of the groups comprising multiple ones of the plurality of minute projection structures, the multiple minute projection structures of each of the groups being arranged in a linear array that is substantially parallel to the at least one light incidence surface with the included angles of the multiple minute projection structures being identical and pointing toward the at least one light incidence surface, wherein the included angles of the multiple minute projection structures of each of the groups are such that the included angles get smaller with the distance of the group from the at least one light incidence surface getting shorter.