Patent ID: 9052431
Filing Date: 2015-06-09
Classification: G02B,G02F

Abstract:
1. A backlight module, comprising: a plastic frame; an aluminum extrusion comprising a protrusion being arranged between a first position slot and an installation slot of the aluminum extrusion; a light guiding plate; the plastic frame and the aluminum extrusion prohibit the light guiding plate from moving in an up and down direction, wherein the light guiding plate is disposed on the aluminum extrusion, the light guiding plate comprises a body, and a first position portion extends along the body towards the aluminum extrusion; and the first position slot of the aluminum extrusion corresponding to the first position portion of the light guiding plate, and the first position portion of the light guiding plate closely engages with the first position slot of the aluminum extrusion, and the protrusion of the aluminum extrusion is arranged between a light source and the light guiding plate; the first position portion comprises a first tilt surface extending from a bottom of the body towards a bottom edge of a light incident surface, the first tilt surface comprises a first edge and a second edge, the first edge is farther from the light source than the second edge, the first edge of the first tilt surface connects with the bottom edge of the light incident surface via a bottom surface of the first position portion; the first position slot comprises a bottom wall, and a first sidewall and a second sidewall arranged in two sides of the bottom wall, wherein the first sidewall is parallel to the first tilt surface, the second sidewall is parallel to the light incident surface, the bottom wall is parallel to the bottom surface of the first position portion; and wherein the first sidewall closely abuts against the first tilt surface, the second sidewall closely abuts against the light incident surface, and the bottom wall closely abuts against the bottom surface of the first position portion.