A backlight module for light-incident side microstructure of light guide plate

Abstract

The invention discloses a backlight module group for a light-incoming side microstructure of a light guide plate, and the backlight module group comprises a support plate, a light source, reflection paper, the light guide plate, a diffusion plate, and a prism lens. The support plate comprises a back plate and a side plate, and one side of the back plate is provided with the side plate which is perpendicular to the back plate. One side of the back plate is provided with the reflection paper, the light guide plate, the diffusion plate and the prism lens. The inner side of the side plate is provided with the light source, and one side of the light guide plate is provided with a glue layer. An outer side wall of the glue layer is provided with a diffusion groove and sawtooth grooves, wherein the diffusion groove is an arc-shaped groove. The surface of an outer side wall of the glue layer outside the diffusion groove is provided with the sawtooth groove, and the sawtooth grooves consist ofa plurality of grooves or projections, wherein the depth and width of the sawtooth grooves are 10-20 microns. The backlight module group is characterized in that the backlight module group is uniformin outgoing light, is small in luminance difference, is low in processing cost, is high in processing speed, and is high in processing yield rate.

Description

technical field [0001] The invention relates to a backlight module for the light-incident side microstructure of a light guide plate, in particular to a backlight module for the light-incident side microstructure of the light guide plate with uniform light output, small luminance difference, low processing cost, fast processing speed and high processing yield. Backlight module. Background technique [0002] In recent years, in the display industry, backlight modules (BLU: BackLightUnit) are divided into direct type and side type. The proportion of side-type backlight modules is increasing. The appearance of side-entry products is more ultra-thin, and the proportion is also increasing. The lower surface of the side-entry light guide plate is usually provided with formed dots to realize the reflection of light, so that the light can be irradiated on the optical film more uniformly. [0003] The working principle of the light guide plate is to use the optical-grade acrylic s...

AI Technical Summary

Problems solved by technology

Due to the ultra-thin size requirements of the light guide plate, the production efficiency of injection molding is low, and the need to configure professional injection molding machines and precision molds makes the production cost high. Therefore, it is necessary to provide a technical solution with high productivity and low cost.

Images