An Optical Diffusion Film

Abstract

The invention belongs to the field of optical films for liquid crystal displays, and in particular relates to an optical diffusion film, comprising a transparent substrate, a light diffusion layer arranged on the upper surface of the transparent substrate and a back layer arranged on the lower surface of the transparent substrate, the back layer Coating liquid is coated on the surface, and the coating liquid includes the following substances in weight percentage: 0.015% to 0.172% of leveling agent; 0.549% to 0.686% of antistatic agent; 2.325% to 3.923% of anti-blocking particles; 27.465% to 34.322% of agent resin; 2.059% to 7.427% of crosslinking agent; 58.838% to 65.916% of solvent; the leveling agent is acrylate copolymer. The technical solution of the present application can effectively take into account the bonding fastness of the protective film and ensure the antistatic effect.

Description

technical field [0001] The invention belongs to the field of optical thin films for liquid crystal displays, in particular to an optical diffusion film. Background technique [0002] The optical diffusion film is one of the key components of the backlight module of the liquid crystal display, and its main function is to provide a uniform surface light source for the liquid crystal display. The optical diffusion film generally includes a substrate, a light diffusion layer disposed on the upper surface of the substrate, and a back layer disposed on the lower surface of the substrate. In the cutting and slitting process of the thin optical diffusion film in the next process, in order to avoid contamination by foreign matter such as dust particles and play a supporting role, it is necessary to attach a protective film to the back of the optical diffusion film. [0003] In the industry, the electrostatic adsorption between the back layer of the optical diffusion film without ant...

AI Technical Summary

Problems solved by technology

[0003] In the industry, the electrostatic adsorption between the back layer of the optical diffusion film without anti-static effect and the low-viscosity protective film is generally used for lamination. The protective film on the pasting is not fast enough and easy to fall off; The optical diffusion film sheet of the film needs to tear off the protective film. When assembled into a backlight module, there is a lot of static electricity on the surface of the diffusion film, which is very harmful.

In addition, the adhesive layer of the protective film is attached to the back layer of the optical diffusion film with anti-static effect. Although this solution has no obvious electrostatic hazards, it also has the problem of insufficient bonding fastness of the protective film.

Images