Patent ID: 7760288

Claim:
A backlight module comprising: a frame comprising a substantially rectangular bottom plate, and a first, a second, and a third side walls upwardly extending from three edges of the bottom plate, the first side wall being opposite and parallel to the third side wall, a first spacing board inwardly extending from the first side wall, the first spacing board, the first side wall, and the bottom plate cooperatively defining a first sliding channel; a light guide plate accommodated in the first sliding channel of the frame, the light guide plate comprising a light emission surface, a bottom surface opposite to the light emission surface, a light incident surface between the light emission surface and the bottom surface, and two opposite side surfaces between the light emission surface and the bottom surface; and a fixing member detachably secured to the frame such that the light guide plate is fixedly accommodated in the frame, wherein each of the side surfaces of the light guide plate is parallel to the second side wall of the frame, and comprises a first protrusion outwardly extending therefrom.