Patent ID: 8770822
Filing Date: 2014-07-08
Classification: G02B

Abstract:
1. A backlight module, comprising: a light guide plate having a light incidence surface, which disposes more than two light guide plate protrusions thereon, and each of the light guide plate protrusions being provided with a tapping hole; a printed circuit board being provided with more than two first through holes, and disposing a plurality of light-emitting bodies on a front surface of the printed circuit board; a heat-dissipating bracket being provided with more than two second through holes, and the first and second through holes being corresponding to the tapping hole; and a first retaining member passing through the second through hole, the first through hole and the tapping hole for retaining the heat-dissipating bracket, the printed circuit board and the light guide plate together to form an independent module; wherein the light incidence surface of the light guide plate and a front surface of all the light-emitting bodies define an optical-coupling distance therebetween.