An Optical Diffusion Film

Abstract

The invention belongs to the field of optical films for liquid crystal displays, and particularly relates to an optical diffusion film, which includes a transparent base material, a light diffusion layer disposed on the upper surface of the transparent base material, and a back layer disposed on the lower surface of the transparent base material. The back layer A coating liquid is coated on the top, and the coating liquid includes the following weight percentages of each substance: leveling agent 0.015% to 0.172%; antistatic agent 0.549% to 0.686%; anti-adhesive particles 2.325% to 3.923%; adhesion The agent resin is 27.465% to 34.322%; the cross-linking agent is 2.059% to 7.427%; the solvent is 58.838% to 65.916%; the leveling agent is an acrylate copolymer. The technical solution of this application can effectively take into account the adhesive fastness of the protective film and ensure the anti-static 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...

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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.

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