Patent ID: 8708542

Claim:
A liquid crystal display device, comprising a backlight module, the backlight module at least at least comprising a light source assembly and a light guide plate, characterized in that: the light source assembly comprising a plurality of light-emitting groups to provide multiple groups of parallel incident beams having different intensity, each of the light-emitting groups including a light-emitting unit and a light path-adjusting element, the light guide plate comprising a light incidence surface facing the light source assembly, a bottom surface adjacent to the light incidence surface and a light-emitting surface opposite to the bottom surface, the luminance of the parallel incident beams being gradually increased from bottom to top along the light incidence surface of the light guide plate, and the parallel incident beams being horizontally incident on the light incidence surface, which is an inclined surface, the inclined surface refracting the parallel incident beams to be multiple groups of parallel refracted beams corresponding to the parallel incident beams onto the bottom surface, the bottom surface forming a plurality of mesh points or micro-structures, and the parallel refracted beams being emitted out from the light-emitting surface after being reflected and dispersed by the mesh points or micro-structures of the bottom surface, wherein the bottom surface of the light guide plate is divided into multiple regions, which are corresponding to the parallel incident beams, to separately receive the parallel refracted beams corresponding to the parallel incident beams.