A diffuser sheet and its backlight module

Abstract

The invention discloses a diffusion piece which comprises a light-transmitting base material layer, a first diffusion layer, and an elastic glue layer. The light-transmitting base material layer comprises an incident face and a light emitting face, and the incident face and the light emitting face are opposite. The first diffusion layer is overlapped on the light emitting face of the light-transmitting base material layer and used for optic diffusion. The elastic glue layer is formed on the incident face of the light-transmitting base material layer, the surface away from the light-transmitting base material layer is viscid, and the elastic glue layer can lower relative movement between the diffusion piece and a light guide plate, accordingly, the surface of the light guide plate is prevented from being rubbed by diffusion particles on the incident face of the diffusion piece or dust entering the space between the diffusion piece and the light guide plate.

Description

technical field [0001] The invention relates to the field of backlight modules, in particular to a diffusion sheet and a backlight module. Background technique [0002] Due to the incomparable advantages of many other displays such as low power consumption, small size, light weight, and ultra-thin, liquid crystal displays have been widely used in various consumer markets in recent years. Among them, the imaging method of the liquid crystal display uses thin film transistors to drive the liquid crystal and display high-quality images, but the liquid crystal panel itself does not emit light, and the display light source must be provided by the backlight module. [0003] Usually, such as figure 1 As shown, the backlight module 1 is composed of a light source 11, a light guide plate 12, a diffusion sheet 13, a reflection sheet 14, an iron frame 15 and other components, and the diffusion sheet 13 includes an upper diffusion sheet 131 and a lower diffusion sheet 132, respectively...

AI Technical Summary

Problems solved by technology

During the vibration test or transportation, there will be relative motion and mutual friction between the light guide plate 16 and the diffusion sheet 13, especially when there are diffusion particles on the lower surface of the diffusion sheet 13, scratches on the light guide plate are more likely to occur, resulting in damage to the entire liquid crystal panel. Bad white clusters on the display

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