Backlight module

Abstract

The invention provides a backlight module which comprises a back plate, a light guide plate arranged in the back plate, a lamp bar arranged on one side of the light guide plate, a lateral reflection piece arranged on one side of the light guide plate far away from the lamp bar and four corner pieces arranged between the back plate and the light guide plate. The corner pieces are manufactured by rubber materials, the surface of the corner pieces toward the light guide plate is white, the lateral reflection piece is located between two corner pieces, and the length of the lateral reflection piece is smaller than or equal to that between the two corner pieces and further achieve separation of the lateral reflection piece and the corner pieces. The lateral reflection piece and the corner pieces used for locating the light guide plate are arranged in separation mode, separation of the light guide plate and the lateral reflection piece caused by friction between the lateral reflection piece and the corners pieces in the prior art is avoided, and corner light leakage caused by separation of the light guide plate and the lateral reflection piece is further avoided. The backlight module further ensures light intensity and light evenness of the backlight module and improves quality.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a backlight module capable of preventing corner light leakage. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal panel and a backlight module. The working principle of the LCD panel is to place liquid crystal molecules between two parallel glasses. There are many small vertical and horizontal wires between the two glasses. The direction of the liquid crystal molecules is controlled by electrifying or not, and the light from the backlight module is refracted out to produce screen. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is needed to display...

AI Technical Summary

Problems solved by technology

When the light guide plate 500 is affected by the change of cold and hot temperature, it will expand and contract, which will cause back and forth friction between the side reflector 900 and the rubber block 700, which will easily cause the side reflector 900 and the light guide plate 500 to separate at the corners, resulting in Light leakage from the corner of the backlight module

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