The role of the acrylic diffusion plate is to make the light from the guide plate evenly diffused, there are also points of confusion. Acrylic light transmission rate is 92%, PC is 88%, ps is about 80%. Acrylic has a higher light transmission rate than PC and a lower cost, although its anti-ageing function is weak and PC data is precious and anti-ageing. Acrylic diffusion panels, by chemical or physical means, when refracted, the light encounters two different refractive indices in the centre of the act, resulting in physically imagined reflections and scattering. Adding inorganic or organic light diffusers to the substrate of the acrylic substrate, or reflecting and scattering the microscopic features in the array sequence of different refractive directions on the surface of the substrate. Acrylic diffusion sheet with high haze, high light transmission, high looseness and other optical properties of plastic sheet, can effectively convert the point light source or line light source int...