Light guide plate and backlight module

Abstract

The invention relates to a light guide plate comprising a body and a plurality of semi-cylindrical net points. The body includes a light incidence surface, a front surface and a back surface opposite to the front surface. The light incidence surface is connected with the front surface and the back surface, and the light incidence surface and the front surface are perpendicular to each other. The front surface includes a light emergence surface and a border surface surrounding the light emergence surface. The net points are continuously distributed on the light incidence surface and are connected in sequence. Each net point includes two oppositely-arranged semi-circular bottom surfaces, a circular arc circumferential surface and a fixed surface arranged opposite to the circumferential surface, wherein the circumferential surface and the fixed surface are connected with the two bottom surfaces, the fixed surface is a plane and is arranged on the light incidence surface, and the radius of the bottom surfaces is larger than 0mm and smaller than 1mm. The central axis of each net point is perpendicular to the front surface and extends along the height direction of the net point, and the height of the net point is equal to the thickness of the light incidence surface along a direction perpendicular to the front surface. The invention further relates to a backlight module using the light guide plate.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module, in particular to a light guide plate and a backlight module using side lighting. Background technique [0002] Such as figure 1 As shown, a plurality of light sources 220 are generally disposed on one side adjacent to the light incident surface of the light guide plate 200 . Since the outgoing angle of the light emitted by each light source 220 is less than 180 degrees, and there is an interval between the areas of light emitted by two adjacent light sources 220, there is a dark area 221 between adjacent two light sources 220, and the light source 220 The emitted light seldom falls into the dark area 221 . The dark area in the current light guide plate 200 generally extends to the light-emitting surface 300 of the light guide plate 200 (that is, the effective light-emitting area of ​​the light guide plate 200, figure 1 In the dotted line area), the brightness distribution on the li...

AI Technical Summary

Problems solved by technology

The dark area in the current light guide plate 200 generally extends to the light-emitting surface 300 of the light guide plate 200 (that is, the effective light-emitting area of ​​the light guide plate 200, figure 1 In the dotted line area), the brightness distribution on the light-emitting surface 300 is uneven

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