Patent ID: 9459393
Filing Date: 2016-10-04
CPC Classification: G02B

Claim Text:
1. A backlight module structure, comprising a backplane, a light guide plate arranged inside the backplane, and at least two backlight sources arranged inside the backplane, the backplane comprising a bottom board and a plurality of side boards perpendicularly connected to the bottom board, the light guide plate comprising at least two sub light guide plates that are sequentially connected in such a way that a recess is formed in connection between two adjacent ones of the sub light guide plates, the recess having an opening facing the bottom board, the bottom board comprising a protrusion formed thereon to correspond to the recess, the at least two backlight sources being mounted on the protrusion and located between the recess and the protrusion so that the two backlight sources emit lights respectively toward the two adjacent sub light guide plates; wherein each of the sub light guide plates comprises, at a connection thereof, a connection surface substantially perpendicular to a top surface of the sub light guide plate and a light incidence surface connected to the connection surface and inclined with respect to the connection surface and the top surface such that the light incidence surfaces of two adjacent ones of the sub light guide plates collectively define the recess that has a cross-sectional configuration of an inverted V-shape; wherein the protrusion of the bottom board has an inverted V-shaped cross-section corresponding to the inverted V-shape of the recess between the two adjacent ones of the sub light guide plates and the protrusion comprises first and second inclined surfaces opposite to each other and respectively corresponding to the light incidence surfaces of the two adjacent ones of the sub light guide plates, the two backlight sources being respectively mounted to the first and second inclined surfaces; and wherein the first and second inclined surfaces of the protrusion are respectively parallel to the light incidence surfaces of the two adjacent ones of the sub light guide plates corresponding thereto such that the backlight sources mounted to the first and second inclined surfaces are directly facing toward the light incidence surfaces of the two adjacent ones of the sub light guide plates to increase light coupling efficiency.