Light board

Abstract

The invention is a kind of light board, which comprises a light entrance face which is used to receive the incoming ray, a end face opposite to the entrance face, a light reflection face for reflected light and intersects with the entrance face, several reflecting mesh spots on the reflection face and a light exit facet opposite to the reflecting face. The mesh spots include several optical scattering particles, which has several light reflecting facets. All the light reflecting facets can reflect the beams from side direction to mesh spots, the side direction light is emitted uprightly.

Description

【Technical field】 [0001] The invention relates to a light guide plate, in particular to a light guide plate applied to a liquid crystal display. 【Background technique】 [0002] In recent years, with the development of various information, communication, and consumer liquid crystal display products, especially the development of various color liquid crystal display products, the requirements for the luminance, light uniformity, and light output efficiency of the light source system are increasing day by day. [0003] The light guide plate is an important component of the liquid crystal display light source system. It generally includes a light incident surface, a light exit surface, and a light reflection surface. According to the process principle, it is mainly divided into two types: printed (Screen Printing) light guide plate and non-printed light guide plate , the production material is generally PMMA (Polymethmethacrylate, polymethyl methacrylate), and the refractive ind...

AI Technical Summary

Problems solved by technology

[0007] image 3 for figure 1 The schematic diagram of the optical effect of the reflective dots 15 is shown. The entire reflective dot area has obvious and concentratedly distributed brighter areas 151 and darker areas 152, wherein the brighter areas 151 are where the reflective dots 15 can effectively scatter incident light. In the effective reflection part, the darker region 152 is a region with a weaker effect on the incident light, and the darker region 152 accounts for a relatively large proportion, so the light scattering ability provided by the reflective grid point 15 is limited, and the side incident to the reflective grid point The light of 15 is not easy to exit upwards; and the light emitted from the light guide plate 10 is not uniform due to the presence of obvious and concentrated areas with strong light scattering effect and weak light scattering effect at the same time.

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