The diffusion film is mainly used in the backlight light source part of the LCD module. Its light will pass through the diffusion layer with PET as the base material, and will pass through the medium with different refractive index, so that the light will undergo a lot of refraction, reflection and scattering. It can also modify the light into a uniform surface light source to achieve the effect of optical diffusion.
According to the classification of LCD monitors, there are two types of side projection type and direct type:
Among them, the diffusion material used for side projection is called diffusion film (or diffusion sheet); in the direct backlight light source, two diffusion materials are applied, one is diffusion film and the other is diffusion plate. The important indicators of the diffusion film are total light transmittance and haze. The function of the XLK100 diffusion film is to provide a uniform surface light source for the liquid crystal display. Generally, the traditional XLK100 diffusion film is mainly in the diffusion film substrate, adding one by one chemical particles as scattering particles, while the existing diffusion plate has a dispersed particle Between the resin layers, when the light passes through the diffusion layer, it will continue to pass through two media with different refractive indexes, so the light will undergo a lot of refraction, reflection and scattering, which results in the effect of optical diffusion.