Backlight Module

Abstract

Provided is a backlight module, comprising a light guide plate and an illumination unit, wherein the light guide plate comprises a first side face, a second side face, and a third side face; the first side face and the second side face are oppositely arranged; the height of the first side face is greater than that of the second side face; the third side face is located between the first side face and the second side face, with the third side face having a light-in slope and a light-out surface thereon; the light-in slope is adjacent to a position between the first side face and the light-out surface; the light-out surface is adjacent to the second side face, with the light-in slope and the light-out surface forming an included angle; and the illumination unit is arranged upon the light-in slope. The backlight module of the invention reduces the integral width of the backlight module and facilitates the narrow-frame design of the subsequent liquid crystal display.

Description

technical field [0001] The present invention relates to a backlight module, in particular to a backlight module in which a light-emitting unit is disposed on a light-incident inclined plane opposite to a light-emitting surface or a bottom reflection surface of a light guide plate and located on the same side. Background technique [0002] Generally speaking, since the liquid crystal itself does not emit light, in order to enable it to display images normally, the method used today is to use the backlight module to provide sufficient brightness and uniformly distributed surface light source to the liquid crystal display, and then make the liquid crystal display display corresponding From the image, it can be seen that the backlight module is one of the key components of the liquid crystal display. [0003] see figure 1 , which is a side view of a backlight module 10 in the prior art. The backlight module 10 includes a light guide plate 12 , a light emitting unit 14 , and a r...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned design will result in the formation of a structure with a height difference between the light-emitting surface 20 and the light-incident surface 18 of the light guide plate 12, for example figure 1 A slope 22 is shown, so the light incident from the light incident surface 18 into the light guide plate 12 will often emerge from the slope 22 to cause bright lines or light leakage problems, thereby affecting the image display quality of the liquid crystal display.

In addition, if figure 1 As shown, since the backlight module 10 must have an additional accommodating space between the light incident surface 18 of the light guide plate 12 and the reflector 16 for accommodating the light emitting unit 14, the overall width of the backlight module 10 will increase accordingly. It is not conducive to the thin design of the narrow frame of the liquid crystal display

Images