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A kind of diffusion film and its application

A technology of diffuser film and diffuser coating, which is applied to instruments, optics, diffusing components, etc., can solve the problems of increasing the specific surface area of ​​the coating surface, increasing the surface tension of the coating, and poor adhesion between the diffusing film and the ink coating. The effect of improving the poor adhesion of the coating, increasing the surface tension of the coating, and excellent diffusion effect

Active Publication Date: 2021-11-26
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor adhesion between the diffusion film and the ink coating after the existing diffusion film is printed with ink, the present invention provides a diffusion film and its application
The diffusion film suitable for ink printing provided by the present invention not only has excellent diffusion effect, covering property and optical performance, but at the same time, due to the addition of porous particles in the coating of the diffusion film, the specific surface area of ​​the coating surface is greatly increased, thereby increasing the surface area of ​​the coating. Tension, after ink printing, the problem of poor coating adhesion is obviously improved, and the preparation method is simple and easy to operate

Method used

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  • A kind of diffusion film and its application
  • A kind of diffusion film and its application

Examples

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Effect test

Embodiment 1

[0046] The invention provides a diffusion film, which comprises a transparent substrate, a diffusion coating and a protective coating; the diffusion coating and the protective coating are respectively located on the upper and lower surfaces of the transparent substrate. Wherein, the transparent substrate is polyethylene terephthalate, and the thickness of the transparent substrate is 25um; the diffusion coating contains: 100 parts by mass of polyacrylic resin adhesive, 30 parts by mass of polyacrylic resin adhesive with a particle size of 3um Diffused porous particles, the diffused porous particles are polymethyl methacrylate; the protective coating contains: 100 parts by mass of polyurethane adhesive, 0.5 parts by mass of anti-blocking porous particles with a particle size of 1um, the anti-blocking The cohesive porous particles are polymethyl methacrylate.

Embodiment 2

[0048] As in the diffusion film provided in Example 1, wherein the transparent substrate is polyethylene, and the thickness of the transparent substrate is 75 μm; the diffusion coating contains: 100 parts by mass of polyurethane adhesive, 50 parts by mass of diffusion film with a particle size of 10 μm Porous particles, the diffusion porous particles are polymethyl methacrylate; the protective coating contains: 100 parts by mass of polyurethane adhesive, 1 part by mass of anti-blocking porous particles with a particle size of 3 μm, the anti-blocking The porous particles are polybutyl methacrylate.

Embodiment 3

[0050] The diffusion film provided in Example 1, wherein the transparent substrate is polycarbonate, and the thickness of the transparent substrate is 80 μm; the diffusion coating contains: 100 parts by mass of polyurethane adhesive, and the particle size of 100 parts by mass is 15 μm The diffusion porous particles, the diffusion porous particles are polymethyl methacrylate; the protective coating contains: 100 parts by mass of polyacrylic resin adhesive, 2 parts by mass of anti-blocking porous particles with a particle size of 5 μm, The anti-blocking porous particles are polyamide resins.

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Abstract

The invention relates to the field of optical thin films, and more specifically relates to a novel optical diffusion film suitable for ink printing and a preparation method thereof. In order to solve the problem of poor adhesion between the diffusion film and the ink coating after the existing diffusion film is printed with ink, the invention provides a diffusion film and a preparation method thereof. The diffusion film includes a transparent substrate, a diffusion coating and a protective coating; the diffusion coating and the protective coating are respectively located on the upper and lower surfaces of the transparent substrate. The diffusion coating comprises diffusion porous particles. The protective coating comprises anti-blocking porous particles. The diffusion film suitable for ink printing provided by the present invention not only has excellent diffusion effect, covering property and optical performance, but at the same time, due to the addition of porous particles in the coating of the diffusion film, the specific surface area of ​​the coating surface is greatly increased, thereby increasing the surface area of ​​the coating. After ink printing, the problem of poor coating adhesion is obviously improved, and the preparation method is simple in process and easy to operate.

Description

technical field [0001] The invention relates to the field of optical films, more specifically to a diffusion film suitable for ink printing and its application. Background technique [0002] In recent years, with the continuous rise of liquid crystal display technologies such as tablet computers, notebook computers and televisions, consumers' demand for thinner and larger displays has become increasingly popular. Therefore, the backlight module, which is an important part of the optical system in the display device, more and more adopts the side-type structure. The commonly used structures in side-lit backlight modules are reflective film, LED light bar, light guide plate, diffusion film, and brightness enhancement film. The LED light bar used as the light source of the liquid crystal display contains multiple lamp beads, and each lamp bead has a large light angle, and the light rays between different lamp beads will cross and overlap each other, resulting in uneven light a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02F1/13357
CPCG02B5/0226G02B5/0268G02F1/133606
Inventor 唐海江李兵军刘志鹏赵东东李刚张彦
Owner NINGBO EXCITON TECH
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