Patent ID: 8979350
Filing Date: 2015-03-17
Classification: G02B

Abstract:
1. A light guide plate, comprising: an emitting surface; a reflecting surface opposite to the emitting surface; and an incident surface interconnecting the emitting surface and the reflecting surface, wherein a plurality of microstructures is defined in the reflecting surface, each microstructure is a slot, a cross-section across each microstructure and perpendicular to the incident surface is substantially V-shaped, each microstructure is formed with two sidewalls, the two sidewalls of each microstructure portion are symmetrical with each other, each sidewall comprises a plurality of stepped portions connected in order, each stepped portion comprises a flat surface and an inclined surface connected with the flat surface, a plurality of flat surfaces of the plurality of stepped portions is substantially parallel to each other, and a plurality of inclined surfaces of the plurality of stepped portions is substantially parallel to each other.