Multifunctional high-haze and high-light-transmittance light diffusion plate and preparation method thereof

Abstract

The invention provides a multifunctional high-light-transmittance and high-haze light diffusion plate which mainly comprises three layers including a first external surface layer, a second external surface layer and an intermediate layer. The base material of three layers of diffusion plates is the optical polystyrene. The first external surface layer and the second external surface layer are identical in functional particles which are used for enhancing the special function of the surface layer, such as the UV prevention, antistatic and foaming functions. The functional particles of the intermediate layer are the titanium dioxide. The haze of the final product can be greater than or equal to 99.5% and the light transmittance can be greater than or equal to 80%, the product also has multiple great physical properties and the cost for realizing the great physical properties is low. Meanwhile, the invention also provides a preparation method of the light diffusion plate.

Description

technical field [0001] The invention relates to the field of optoelectronic materials, in particular to a multifunctional light diffusion plate with high haze and high light transmittance and a preparation method thereof. Background technique [0002] Light diffusion plates have been widely used in liquid crystal display, LED lighting, and imaging systems to fully diffuse incident light and achieve softer and more uniform illumination effects. The light diffusion plate is formed by adding a light diffusing agent to the raw material when producing a solid plate. The diffusing agent is evenly distributed in the plate, so that when the light passes through the plate, it will reflect, refract and scatter when it encounters the particles of the diffusing agent, so that the light can pass through the plate evenly without exposing the light source, reaching from point light source to The change of the surface light source. It is suitable for direct-lit LED TV backlight modules an...

AI Technical Summary

Problems solved by technology

But, in this open technology, the refractive index of organosilicon particle is about 1.45, can know from this, its organosilicon particle is the organosilicon particle after modification, and the price of the organosilicon particle after modification is usually lower than common organosilicon particle The price is much more expensive, and the mass percentage of organic silicon particles is 3%, and the mass percentage of silicon dioxide is 2%, so the cost is relatively high

Moreover, the total content of the light diffusing agent used in this patent is 5%, and the final technical effect of high haze and high light transmission is not clearly shown by the data

[0007] The above-mentioned patents are all improvements made to the single-layer diffusion plate, but to add other functional components to the single-layer diffusion plate to achieve other physical properties of the diffusion plate, the amount of functional components that need to be added There will be a lot, which has caused a huge waste of cost

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