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Diffusion film, preparation method of diffusion film, and application of diffusion film

A diffusion film and silicone technology, applied in optics, instruments, optical components, etc., can solve the problems of hard nylon particles, poor anti-dropping and anti-scratch performance of the lower diffusion film, and fragile polyurethane particles, so as to reduce water absorption. performance, improved scratch resistance, compounding and ease of use

Inactive Publication Date: 2018-07-17
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of poor anti-dropping and scratch resistance of the existing lower diffusion film, the present invention provides a diffusion film and its preparation method and application
The anti-adhesion layer of the diffusion film provided by the invention includes modified silicone elastomer particles, which not only solves the problem of the fragility of the polyurethane particles, but also solves the problem of the hardness of the nylon particles; the diffusion film provided by the invention has good resistance Ball drop and scratch resistance to avoid formation of white spot defects

Method used

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  • Diffusion film, preparation method of diffusion film, and application of diffusion film

Examples

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preparation example Construction

[0034] The preparation method of the diffusion membrane provided by the invention comprises the following steps:

[0035] (1) Weigh ethyl acetate, acrylic resin glue, and then weigh the modified silicone elastomer, and stir mechanically for 30 minutes after mixing;

[0036] (2) Take the auxiliary agent and isocyanate again, and mechanically stir for 30 minutes;

[0037] (3) Coating the above-mentioned mixed coating solution on one side of the substrate, and the prepared diffusion membrane was left to mature for 48 hours.

[0038] Further, the other side of the substrate in step (3) has been coated with a diffusion layer.

[0039] Further, the coating parameters in step (3) are: anilox roll number EXT-160, line speed 15m / min, tension 6N, corona opening, edge scraping, positive winding direction.

[0040] Diffusion membrane provided by the invention is tested according to the following methods:

[0041] 1. Anti-falling ball: The cured finished product is subjected to a fallin...

Embodiment 1

[0047] The present invention provides a diffusion film, the diffusion film includes an anti-adhesion layer, and the anti-adhesion layer includes modified silicone elastomer particles.

[0048] The preparation method of the diffusion film is as follows (the weight ratio of the modified silicone elastomer to the adhesive resin is 1:50):

[0049] (1) Weigh 4.5kg of acrylate glue, 8kg of ethyl acetate solvent, 0.1kg of modified silicone elastomer particles, and mechanically stir for 30 minutes;

[0050] (2) Weigh 0.56kg of auxiliary agent and isocyanate, add it, and stir for 30min;

[0051] (3) Apply the liquid material on-line to obtain the finished diffusion membrane; then place it for 48 hours to mature.

[0052] The cured finished product was subjected to a ball drop test, and there was no ball mark after the ball drop test, indicating that the anti-adhesion layer has good anti-drop ball performance.

[0053] The cured finished product is subjected to a friction test, and af...

Embodiment 2

[0056] The diffusion film as provided in Example 1, except that the weight ratio of the modified silicone elastomer to the adhesive resin is 1:75.

[0057] The cured finished product was subjected to a ball drop test. After the backlight module was turned on, the depth of the ball marks was observed. There were slight marks, and the result was worse than that of Example 1.

[0058] The cured finished product is subjected to a friction test, and after the friction test, the damage of the light guide plate is observed. Judging from the depth and number of scratches on the light guide plate, the light guide plate has obvious scratches, and the result is worse than that of Example 1.

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Abstract

The present invention relates to the field of backlight modules, especially to a diffusion film, a preparation method of a diffusion film, and an application of a diffusion film. The objective of theinvention is to solve the problem that a current diffusion film is poor in resistance to sphere falling and resistance to scratch. The present invention provides a diffusion film, a preparation methodof a diffusion film, and an application of a diffusion film. The diffusion film comprises an adhesion-resisting layer, and the adhesion-resisting layer comprises a modified organosilicone elastomer.The adhesion-resisting layer of the diffusion film comprises modified organosilicone elastomer particles, so that the problem is solved that polyurethane particles are fragile and the problem is solved that nylon particles are hard; and moreover, the diffusion film is good in resistance to sphere falling and resistance to scratch, and avoid formation of white-spot defects.

Description

technical field [0001] The invention relates to the field of backlight modules, in particular to a diffusion film and its preparation method and application. Background technique [0002] In recent years, with the development of science and technology, mobile phones, TVs, PADs, monitors, etc. have developed rapidly. Therefore, people have put forward more and more requirements for mobile phones, TVs, PADs, etc.: in terms of display color, the requirements are more and more bright, contrast is clear, and the color gamut is wider; in terms of size, the screens are required to be larger and larger , The screen-to-screen ratio is getting higher and higher, and even full-screen; in terms of thickness, mobile phones, TVs, and monitors are getting thinner and thinner. Due to the higher requirements for finished products, there are also higher requirements for the various components. Among them, the improvement of the performance requirements of the optical film is particularly ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B1/14
CPCG02B1/14G02B5/0268
Inventor 李刚于海澄夏寅蔡刚庆唐海江张彦
Owner NINGBO EXCITON TECH
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