Patent ID: 9052429
Filing Date: 2015-06-09
Classification: G02B,G02F

Abstract:
1. A backlight module including a backplate assembly and a light guide unit, the backplate assembly comprising: a first backplate unit, comprising: a first backplate body formed with three first side walls and an opening along a front side of the first backplate body; a plurality of first upper hooks formed on the front side; and a plurality of second upper hooks formed on the front side and engaged with a second backplate body; and a plurality of third notches formed in the front side, the second backplate body further comprising: a plurality of first lower hooks formed on the back side, numbers and positions of the third notches are respectively corresponded to numbers and positions of the first lower hooks, the third notches and the first lower hooks are respectively engaged with each other, and a second backplate unit, comprising: the second backplate body, formed with three second side walls and an opening along a back side of the second backplate body; and a plurality of first notches, formed on the back side, wherein numbers and positions of the first notches are respectively corresponded to numbers and positions of the first upper hooks, the first notches and the first upper hooks are respectively engaged with each other, wherein a width of the front side is slightly larger than a width of the back side, and the front side is disposed on an outer edge of the back side when the first backplate unit is engaged with the second backplate unit, such that the first backplate unit and the second backplate mutually slide in a lateral direction, the first backplate unit is separated from the second backplate unit based on an expansion value of the light guide unit when the light guide unit expands in a horizontal direction by heat, wherein a distance between the second upper hooks and the front side is larger than a distance between the first upper hooks and the front side.