Backlight module and displayer including same

Abstract

The invention relates to a backlight module and a displayer including the same. The backlight module comprises a back casing, a light guide plate, a light source and at least one buffering part. The back casing comprises at least one location protruding column extending and protruding from the surface of the back casing. The light guide plate is fixed in the back casing and comprises a short-distance light side and a remote light side which are arranged oppositely and two connection sides arranged oppositely. At least one concave portion corresponding to the at least one location protruding column is formed in the at least one connection side and comprises first concave portion sides close to the short-distance light side and second concave portion sides close to the remote light side. The light source is arranged on the short-distance light side of the light guide plate. The at least one buffering part is clamped between the remote light side of the light guide plate and the back casing and abuts against the remote light side. When the at least one location protruding column is snapped on the concave portions, first distances are formed between the at least one location protruding column and the first concave portion sides, second distances are formed between the at least one location protruding column and the second concave portion sides, and the first distances are larger than the second distances.

Description

technical field [0001] The present invention relates to a backlight module, in particular to a backlight module with a light guide plate positioning structure and a display including the same. 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 to make the light uniformly diverge. [0003] From the perspective of the current backlight module structure, the light guide plate is usually locked and positioned by the backplane or plastic frame, or fixed on the backplane by copper pillars. Due to the thermal expansion characteristics of the light guide plate, it is easy to be deformed due to thermal expansion , thereby affecting the light...

AI Technical Summary

Problems solved by technology

[0003] From the perspective of the current backlight module structure, the light guide plate is usually locked and positioned by the backplane or plastic frame, or fixed on the backplane by copper pillars. Due to the thermal expansion characteristics of the light guide plate, it is easy to be deformed due to thermal expansion , which in turn affects the light guiding effect of the light guide plate

In order to prevent the light guide plate from being damaged due to thermal expansion, enough expansion and contraction space is usually reserved around the light guide plate, so that the light guide plate has enough space for expansion and contraction. However, the distance between the light guide plate and the light source is too far, reducing the light source Light incident efficiency, thus increasing the brightness variation of the backlight module

[0004] Reducing the distance between the light source and the light guide plate can improve the light input efficiency of the light source, but with the reduction of the expansion and contraction space, the light guide plate has the risk of crushing the light source due to insufficient expansion and contraction space, and when the light guide plate is heated and expanded , it may cause a large amount of displacement of the light guide plate, resulting in scratches on the light guide plate or convex glass, deforming the optical layer, resulting in light leakage from the top white and bad taste

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