Light guide body lattice point structure, light guide body, mold, backlight structure and display device

Abstract

The invention discloses a light guide body lattice point structure. The light guide body comprises a convex and / or concave structure formed on the first surface of the light guide body; the light guide body is further provided with a second surface opposite to the first surface and a light incident surface connected with the first surface and the second surface. The second surface is a light emitting surface; the convex and / or concave structure comprises a first face and more than three connecting surfaces; the first face is respectively intersected with the first surface and each connecting surface; the first face is a polygon, each connecting surface is intersected with the first face, the included angle between the first face and the first surface is less than 90 degrees, the included angle between each connecting surface and the first surface is less than or equal to 90 degrees, and the width of the polygon is gradually reduced along the direction far away from the intersected sideof the first face and the first surface. By means of the design, the brightness of the light-emitting surface of the light guide plate can be remarkably improved. The invention further provides a light guide body based on the light guide body lattice point structure, a mold, a backlight structure and a display device.

Description

technical field [0001] The invention relates to a light guide plate, in particular to an improved dot structure of the light guide plate, a high-brightness light guide plate, a backlight structure, etc., and belongs to the field of optical technology. Background technique [0002] At present, in some backlight modules, the light source is set on the edge of the back panel behind the liquid crystal panel. The light emitted by the light source enters the light guide plate from the light incident surface on one side of the light guide plate, and exits from the light output surface of the light guide plate after reflection and diffusion. , to form a surface light source for the liquid crystal panel. [0003] In order to increase the uniformity of illumination and the intensity of illumination, dots are generally set on the bottom surface of the light guide plate (LGP), and the function of these dots is to change the propagation direction of light. [0004] refer to Figure 1a-F...

AI Technical Summary

Problems solved by technology

However, these existing light guide plate dot structures are limited to their shapes, which are diffuse reflections to light (refer to Figure 4 ), so the front luminance of the light guide plate cannot be further improved

[0005] Although many researchers in the industry have proposed other types of light guide plate dot structures, their utilization rate of light is low. Therefore, it is necessary to add a variety of optical materials such as diffusers, composite films, reflectors, etc. to the backlight structure. Light guide plate fit (see Figure 5 ), but this undoubtedly increases the difficulty and cost of the process, and also leads to the complexity of the structure of the backlight structure, and the further increase in thickness, etc.

Images