Light diffuser board integrated with high transmittance, high haze and high toughness in one body

Abstract

The invention discloses a light diffuser board integrated with high transmittance, high haze and high toughness in one body. A fiber-level GPPS such as transparent and blue-background polystyrene is taken as a main material, glass beads are taken as a silicon diffusion agent, and a high haze flexibilizer SCBS is innovatively added. Based on the diffuser board having functions of light collection, light diffusion and light reflection, a product formula is improved and added, auxiliary agents such as a diffusion agent, a light stabilizing agent and a high haze flexibilizer are added to a raw material, and thereby functions of light refraction, light reflection and light diffusion are realized in products, not only can quite high light diffusion and emergent light uniformity be realized, but also a utilization rate of the power source is high, anti-folding performance and shielding performance are good, a penetration rate of products can reach 93%+ / -5%, and the haze can reach 99%+ / -1%.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, and in particular relates to a light diffusion plate integrating high light transmittance, high haze and high toughness. Background technique [0002] Diffusion plates have been widely used in liquid crystal display, LED lighting and imaging systems to fully scatter incident light and achieve softer and more uniform illumination effects. The diffusion plate is made by adding a diffusing agent to the raw material when producing a solid plate. The diffusing agent can be evenly distributed in the plate, so that when the light passes through the plate, refraction, reflection, and scattering occur when it encounters the particles of the diffusing agent, so that the light can pass through the plate evenly without exposing the light source. Changes to the surface light source. It is suitable for direct-lit LED TV backlight modules, mobile phone modules, and LED lighting. It has high luminance an...

AI Technical Summary

Problems solved by technology

The inorganic particles mentioned in the patent, such as silica, are already a commonly used light diffusing agent in the market. Although these inorganic particles can increase the haze of the resin, they will greatly reduce the light transmittance. , the light transmittance (1.2mm polycarbonate PC) of the diffusion plate added with such inorganic particles will not be greater than 70%

The organic light-diffusing agent mentioned in the patent can reduce the loss of light when it passes through the diffusion plate, but it cannot completely avoid the loss of light. When the haze is appropriate, the light-diffusing plate obtained by adding an organic light-diffusing agent The light rate is generally not more than 80% (1.2mm polycarbonate PC)

[0004] With the needs of people in the TV market, the thickness of the current backlight module is getting thinner and thinner, the utilization rate of the light source is getting higher and higher, and the requirements for the haze and toughness of the diffuser plate are getting higher and higher without affecting the brightness. ; At present, the diffusion plates produced in the domestic and foreign markets are increasingly unable to meet the needs of the terminal market