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Diffusion and brightening composite optical film and preparation method thereof

An optical film and composite technology, applied in optics, optical components, instruments, etc., can solve problems such as environmental pollution, production efficiency, product quality, and yield, and PET extrusion film cannot meet the requirements of high-fog and high-transparency optics. Achieve the effect of reducing the cost of use and improving production efficiency

Active Publication Date: 2021-10-15
JIANGXI SHENGHUI OPTICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention is to provide a diffusion brightening composite optical film and its preparation method, which consists of a diffusion layer with a diffusion microstructure function and a brightness enhancement function The brightening layer of the structure is co-extruded and compounded to solve the problem of existing optical diffusion film products. During the coating process, its production efficiency and product quality yield decrease. As a result, the PET extrusion film cannot meet the requirements of high fog. High-transparency optical requirements; at the same time, the coating process is used to cause environmental pollution. At the same time, in the process of subsequent processing, there will be no defects in product quality due to coating peeling off and dust.

Method used

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  • Diffusion and brightening composite optical film and preparation method thereof
  • Diffusion and brightening composite optical film and preparation method thereof
  • Diffusion and brightening composite optical film and preparation method thereof

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specific Embodiment approach

[0039] Specific embodiments: the present invention will be further described in detail below in conjunction with specific embodiments.

[0040] The following examples will help to further understand the present invention, but do not limit the content of the present invention. In the embodiments, unless otherwise specified, the rest of the unspecified parts refer to the mass or mass ratio, and the film or the diffusion-enhancing composite functional optical film of the present invention have the same meaning.

[0041] The invention discloses a diffusion brightening composite optical membrane, which is made by co-extruding a diffusion layer with a diffusion microstructure function and a brightness enhancement layer with a brightness enhancement function structure; the diffusion layer with a diffusion microstructure function It is prepared by mixing optically transparent resin and diffusion particles, including a diffusion layer containing diffusion particles and a surface functi...

Embodiment 1

[0057] This embodiment is to produce 0.2mm diffusion brightening composite film, or called diffusion brightening composite optical film, the structure is as follows figure 1 As shown, polymethyl methacrylate is used as the microstructure diffusion layer, no diffusion agent is added, the thickness of the PMMA layer is 0.05-0.06, and a 500-mesh diffusion microstructure is formed; transparent polycarbonate is used as the brightness enhancement layer to form a prismatic enhancement. Bright structure and brightening structure; this product has high fog and high transparency, and is suitable for display modules equipped with light guide plates; the prepared diffusion-enhancing composite optical film or brightness-enhancing diffusion film has performance tests as shown in Table 2.

[0058] Table 2

[0059]

[0060] Explanation: From the test results in Table 2 above, it can be seen that the diffused brightening composite optical film prepared in Example 1, the brightening diffused...

Embodiment 2

[0063] This embodiment is to produce a 1.5mm diffusion brightening composite sheet, using polycarbonate resin as the main material, adding 1.5% organic silicon diffusion agent, with a layer thickness of 0.3-0.5mm, and forming a 100-mesh diffusion microstructure; using transparent polycarbonate Ester is used as the brightening layer, and the quadrangular pyramid brightening layer is formed; this product has high fog and high transparency, good temperature resistance, and is suitable for supporting direct-emitting large-screen displays.

[0064] table 3,

[0065]

[0066]

[0067] Description: Test conditions: the same backlight, the light transmittance haze test instrument is a Japanese company NDH-5000 haze meter, integrating sphere tester; the preparation method of the above-mentioned embodiment is the same as that of the comparative example; the comparative example is shown in Table 1 illustrate.

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Abstract

The invention provides a diffusion and brightening composite optical film and a preparation method thereof, the diffusion and brightening composite optical film is prepared by co-extruding and compounding a diffusion layer with a diffusion microstructure function and a brightening layer with a brightening functional structure, and the problems that in the coating process of an existing optical diffusion film product, the production efficiency and the quality yield of the prepared product are reduced, The result shows that the PET extrusion film cannot meet the optical requirements of high fog and high transmittance; meanwhile, a coating process is adopted, so that pollution to the environment is caused, and in the subsequent processing process, the defect that the product quality is affected by dust generated by coating falling does not occur. The use convenience and the thin film use turning-out are improved, the use cost is reduced, and the production efficiency is improved.

Description

Technical field: [0001] The invention relates to the field of new optical film materials, and mainly relates to an optical film, in particular to a diffusion-enhancing composite optical film and a preparation method thereof. Background technique: [0002] In the functional optical film, the diffusion film is an optical film with high haze and high light transmittance. The brightness enhancement film is an optical film that concentrates light to increase the front brightness. It is widely used in display screens such as mobile phones, tablets, and TVs. It is also gradually used in the fields of ultra-thin advertising and home appliance panels. [0003] The existing optical diffusion film and its production method generally adopt a two-step production method, which is to produce the base film first, and then apply it, so that the production efficiency and the product quality rate are reduced; and in the coating process, it is necessary to use The solvent dissolves, causing en...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B5/04
CPCG02B5/0242G02B5/0231G02B5/0268G02B5/0294G02B5/045
Inventor 马展辉陈鸥波黄忠伟章翟
Owner JIANGXI SHENGHUI OPTICAL TECH
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