Compound type light guiding module and manufacturing method thereof

Abstract

The invention provides a compound type light guiding module which comprises a light guiding plate, a diffusion layer and a brightening layer, wherein the light guiding plate, the diffusion layer and the brightening layer are stacked in sequence, the diffusion layer is connected on the light guide plate in an adhesive mode, and the brightening layer is connected on the diffusion layer in an adhesive mode. Scattering points are formed on the surface, opposite to the diffusion layer, of the light guiding plate, the diffusion layer comprises a transparent colloid and scattering particles distributed in the transparent colloid, and a micro-structure used for brightening is formed on the surface, opposite to the diffusion layer, of the brightening layer. According to the compound type light guiding module, the light loss rate of light when the light passes through the light guiding module can be reduced. The invention meanwhile provides a manufacturing method of the light guiding module.

Description

technical field [0001] The invention relates to a composite light guide module and a manufacturing method thereof. Background technique [0002] At present, a general light guide module includes multiple components stacked together, such as reflective sheets, light guide plates, diffuser plates, and the like. When light propagates in the light guide module, because the components in the light guide module are independent of each other and stacked together, there will inevitably be gaps and air between the components, so that even if the components have the same refractive index, Light rays are also reflected / refracted at the interface between components. Let the refractive index of air , the refractive index of each component of the light guide module , according to the Fresnel formula, the reflectivity , it can be seen that at the interface of every two components, 2.7% of the light will be reflected and cannot be emitted, resulting in loss, resulting in low light ut...

AI Technical Summary

Problems solved by technology

Let the refractive index of air , the refractive index of each component of the light guide module , according to the Fresnel formula, the reflectivity , it can be seen that at the interface of every two components, 2.7% of the light will be reflected and cannot be emitted, resulting in loss, resulting in low light utilization efficiency of the light guide module

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