Backlight module and display device

Abstract

The invention discloses a backlight module and a display device, so that the side bright line of the backlight module is reduced, and the image quality of the backlight module is improved. The backlight module comprises a rubber frame and a light guide plate arranged in the rubber frame, wherein avoiding structures are respectively arranged on the sides, close to the incident light side, of two non-incident light sides parallel to the rubber frame; the side, away from the end face of the light guide plate, of each avoiding structure is closed through a surface sealing structure. The avoiding structures provide larger gaps between the end face of the light guide plate and the surface sealing structures, so that the optical path of the light radiated out from the end face of the light guide plate can be increased, a part of light radiated out from the end face of the light guide plate is absorbed by the surface sealing structures, the other part of light enters into the light guide plate again after being reflected by the surface sealing structures, and the distance of the light entering into the light guide plate again from the position where the light is radiated out from the upper surface of the light guide plate to the side of the rubber frame is longer, so that the scheme can effectively reduce the side bright line of the backlight module and improve the image quality of the backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] Currently, backlight modules of liquid crystal display devices generally use LEDs (light-emitting diodes, LEDs for short) as light sources. According to the distribution of light sources, backlight modules can be divided into two types: direct-type and side-type. In the side-entry backlight module, the LED light bar is located at the side end of the light guide plate. This type of backlight module is mainly used in small-sized display devices such as notebooks, palmtop computers and mobile phones. With the continuous progress of LED-related technologies, side-entry Backlight modules have also begun to be applied to larger-sized display devices to bring better visual experience to users. Such as figure 1 As shown, the structure of the side-entry backlight module mainly includes a backplane 51, a plastic fram...

AI Technical Summary

Problems solved by technology

However, due to the narrow width of the light-shielding tape, the light in the side area of ​​the backlight module screen is relatively concentrated (such as figure 1 shown in the middle circle area), bright lines are easily generated here, resulting in poor picture quality, which in turn affects the display quality of the display device

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