Generally LCD needs 2 diffuser films, 1 upper diffuser film and 1 lower diffuser film. Because the lower diffuser film is close to the light guide plate, the light transmittance is high and the degree of scattering is not high. The upper diffuser film requires a higher degree of diffusion, and the upper diffuser film The film also has the functions of eliminating the pattern of the prism sheet and protecting the prism sheet. The upper and lower two diffusion films scatter the light and achieve the effect of uniform light diffusion.

Diffusion filmfor lighting

The diffusion film is a component of the LCD backlight module, which mainly diffuses the light of the light guide plate, and can distribute the line light source (CCFL) or point light source (LED) into a uniform surface light source.

Diffusion filmreplacement

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Generally, the traditional diffusion film mainly adds chemical particles to the diffusion film base material as scattering particles, while the existing diffusion plate has particles dispersed between the finger layers, so the light will be refracted between the two When passing through media with different rates, light will undergo a lot of refraction, reflection and scattering at the same time, resulting in the effect of optical diffusion.