Backlight module, display including same

Abstract

The invention discloses a backlight module, a displayer including backlight module and a light guide plate preparation method. The backlight module comprises a casing, a light guide plate and a light source. The light guide plate is arranged in the casing and comprises a light entry face, a bottom and a light exiting face. The light source is arranged on the light entry face of the light guide plate, the light exiting face of the light guide plate comprises first curves along any one section in the X direction and second curves along the Y direction and passes through a section of any one crest of the first curves. The distances between the adjacent crests of the first curves are identical, first distances are formed between any two adjacent troughs of the first curves, any two adjacent first distances are different, second distances are formed between any two adjacent crests of the second curve, and the any two adjacent second distances are different.

Description

technical field [0001] The present invention relates to a backlight module, a display including the same and a preparation method of a light guide plate. In particular, the backlight module of the present invention is a backlight module with a specially patterned light guide plate, which is used to reduce the amount of light source and improve the existing The backlight module collimates light and reduces the manufacturing cost of the backlight module. Background technique [0002] With the development trend of thin, light and small electronic products, the size of the display backlight module is also developing in this direction. The backlight module is an indispensable component of the display device. Generally speaking, the backlight module is usually composed of a backplane, a light guide plate, a light source and a multilayer optical film. [0003] In the current backlight module, after the light source is incident on the light guide plate, the total reflection is dest...

AI Technical Summary

Problems solved by technology

In order to make the light source evenly diffuse from the light guide plate, in addition to the dot design, the distance between the light source and the dot must also be considered. If the distance between the light sources is small, it is necessary to use multiple light sources to increase the cost. If the distance between the light sources is large, the cost will be increased. When using a small number of light sources, there will be hot spots (hotspot) problem, which will affect the quality of light emission

[0004] In the prior art, in order to solve the hot spot problem of the light guide plate, more than the light incident side of the light guide plate close to the light source is cut out with an R-cut angle (R-cut) or a V-cut angle (V-cut). The method of milling R-cut or V-cut on the light plate on the cutting board is less economical, so it is often solved by adding a lens layer (lenticular) on the light guide plate; and the injection type Although the light guide plate can be made into R-cut or V-cut, it is not easy to make a thin light guide plate, and there will be obstacles in the development of thinning

[0005] However, although the method of adding a lens layer to the light guide plate can improve the light divergence uniformity of the backlight module and reduce the manufacturing cost, it will cause collimated light in the backlight module and affect the taste.

Images