LIGHT GUIDE PLATE AND BACKLIGHT MODULE THEREOF

摘要

A light guide plate (11) comprises a light incidence surface (111), a bottom surface (112) and a light emergence surface opposite to the bottom surface (112). The bottom surface (112) and/or light emergence surface are provided with multiple micro structures (10). The distribution rule of the micro structures (10) along the direction parallel to the light incidence surface (111) of the light guide plate (11) is that the micro structures (10) in the middle are arranged closely, and the micro structures (10) at two sides are arranged sparsely. A backlight module which applies the light guide plate is also provided. A brightness distribution which has high center and low edges can be achieved along the direction parallel to the light incidence surface of the light guide plate, and therefore higher utilization rate of light is realized.