Light guide plate with light diffusion function

Abstract

The invention discloses a light guide plate with a light diffusion function, and the light guide plate comprises a transparent substrate and a diffusion film; the diffusion film is adhered on the front side of the transparent substrate; because the back side of the transparent substrate is provided with a plurality of light guide points, the transparent substrate is provided with a light guide function, a linear light source is converted into a surface light source; because the outer surface of the diffusion film is an uneven rough surface, the light diffusion function is realized; consequently, the light guide plate has the dual functions of light guiding and light diffusion, not only can the linear light source be converted into the surface light source but also the emitted light is more uniform and mild; in addition, because the light guide plate with the light diffusion function is provided with the diffusion film, the light guide plate has the light diffusion function, so that a traditional diffusion plate is not used; because the cost of the diffusion film is lower than that of the traditional diffusion plate, the cost of the light guide plate with the light diffusion function can be reduced; and the diffusion film is firmly adhered on the light guide plate, so that no other fixation method needs to be adopted, no only is the film firm but also the structure is simplified.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, and in particular relates to a light guide plate for illumination or display. Background technique [0002] The light guide plate is a high-tech product that converts linear light sources into surface light sources. The light guide plate in the prior art uses an optical-grade acrylic (PMMA) plate, and then prints light-guiding points on the bottom surface of the optical-grade acrylic plate with an ink that has a very high reflectivity and does not absorb light. The optical-grade acrylic plate is used to absorb the light emitted from the lamp to stay on the surface of the optical-grade acrylic plate. When the light hits each light guide point, the reflected light will spread to all angles, and then destroy the reflection condition and be emitted from the front of the light guide plate. Through light guide points of various densities and sizes, the light guide plate can be made to emit light...

AI Technical Summary

Problems solved by technology

According to the structure and principle of the light guide plate in the prior art, it can be known that the light guide plate in the prior art needs to be used in combination with a diffusion plate. The diffusion plate in the prior art is a white plastic plate with an uneven rough surface. It is usually superimposed with the light guide plate and fixed by the frame or fixing seat, so not only the cost is high, but also the relative position between the light guide plate and the diffuser plate is not fixed enough.

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