Patent ID: 7404659

Claim:
A backlight module comprising: a light guide board, having at least a light incidence surface, a reflection surface, and a light emitting surface, either the light emitting surface or the reflection surface forming a plurality of light converging elements each having a base having a geometry formed by two arcuate lines facing away from each other and intersecting each other, the light converging element being recessed or raised with respect to the light emitting surface; a reflector film arranged outside the reflection surface of the light guide board; an optic film arranged on the light guide board and having a surface forming a plurality of micro light guides each comprising at least two ridges of different heights whereby the ridges comprise at least one low ridge and at least one high ridge, the low ridge of the micro light guides being of a continuous left-and-right wavy configuration; and a light source arranged at the light incidence surface of the light guide board.