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Transparent anti-blue-ray protective film and preparation method thereof

An anti-blue light and protective film technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of heavy metal safety, environmental pollution, hidden dangers, etc., and achieve the effects of high light transmittance, long life, and low color shift

Active Publication Date: 2019-01-04
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of organic dyes to prepare the anti-blue light film has great disadvantages. First, the heavy metals in the blue light absorber in organic dyes have potential safety hazards and will cause environmental pollution. Hazard to human life; secondly, after the blue light absorber in the organic dye absorbs blue light, it will lead to serious color shift of the appearance of the anti-blue light film, which will affect the normal use
Most importantly, due to the fixed molecular structure of the blue light absorber in the organic dye, the absorbed blue light band is also fixed, so it cannot selectively protect specific bands of blue light

Method used

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  • Transparent anti-blue-ray protective film and preparation method thereof
  • Transparent anti-blue-ray protective film and preparation method thereof
  • Transparent anti-blue-ray protective film and preparation method thereof

Examples

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preparation example Construction

[0079] The preparation method of the transparent anti-blue light protective film provided by the invention comprises the following steps:

[0080] (1) Coating a scratch-resistant layer coating solution on one side of the substrate layer, and obtaining a scratch-resistant layer after ultraviolet curing;

[0081] (2) coating the primer coating solution on the other side of the substrate layer, after heating and curing, the primer coat is obtained;

[0082] (3) Carry out directional friction to the surface of the primer layer with a flannelette stick, so that the surface of the primer layer is rubbed to produce groove orientation;

[0083] (4) Anti-blue light coating liquid is coated on the surface of the primer layer after rubbing, and the oven heating makes the surface of the coating dry and then cured by ultraviolet light to obtain the anti-blue light layer;

[0084] The anti-blue light coating solution is composed of the following components:

[0085] Cholesteric liquid cry...

Embodiment 1

[0101] The invention provides a transparent anti-blue light protective film, wherein the protective film sequentially comprises a scratch-resistant layer, a base material, a primer layer, an anti-blue light layer and a release film layer.

[0102] The preparation method of described transparent anti-blue light protective film comprises the following steps:

[0103] (1) Coating a scratch-resistant layer coating solution on one side of the substrate layer, and obtaining a scratch-resistant layer after ultraviolet curing;

[0104] (2) coating the primer coating solution on the other side of the substrate layer, after heating and curing, the primer coat is obtained;

[0105] (3) Carry out directional friction to the surface of the primer layer with a flannelette stick, so that the surface of the primer layer is rubbed to produce groove orientation;

[0106] (4) Anti-blue light coating liquid is coated on the surface of the primer layer after rubbing, and the oven heating makes th...

Embodiment 2

[0113] For the transparent anti-blue light protective film as described in Example 1, the base material layer is made of PMMA with a thickness of 1 μm; the thickness of the scratch-resistant coating is 1 μm; the material of the primer layer is polyurethane, and the thickness of the coating is 1 μm; The coating thickness of the blue light layer is 2 μm. The release film layer is an OCA release film with a thickness of 25 μm.

[0114] Wherein, the anti-blue light coating solution consists of the following components:

[0115] The structural formula of the cholesteric liquid crystal molecule is b, where n=7, and the parts by weight are 75 parts by weight; the structural formula of the chiral agent is f, where q=0, and the parts by weight are 20 parts by weight; the photoinitiator is 2, 4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO), parts by weight are 5 parts by weight; polymerization inhibitor is methyl hydroquinone, parts by weight are 0.1 parts by weight; organic solvent...

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Abstract

The invention relates to an optical film, more specifically relates to a transparent anti-blue-ray protective film for the flat-panel display screen or lighting field, and a preparation method thereof. For filtering high-energy shortwave blue-ray from the display or the lighting equipment, the invention provides a novel transparent anti-blue-ray protective film and the preparation method thereof.The transparent anti-blue-ray protective film orderly comprises a scratch-resistant layer, a base material layer, a base coat, an anti-blue-ray layer and a release film layer; the anti-blue-ray layeris composed of cholesteric liquid crystal molecules, chiral material, photoinitiator, and polymerization inhibitor; the blue-ray in 420-460nm waveband can be selectively reflected by controlling screwpitch of cholesteric liquid crystal formed in the anti-blue-ray layer, thereby playing excellent anti-blue-ray effect. The transparent anti-blue-ray protective film provided by the invention not onlyachieves the effect of resisting the blue-ray, but also as the high scratch resistance, high transmission and low color cast and like excellent optical performances.

Description

Technical field [0001] The present invention relates to optical films, and more specifically, to a transparent anti-blue light protective film used in the field of flat panel display screens or lighting and a preparation method thereof. Background technique [0002] Research shows that blue light in visible light (short-wave light with a wavelength range of 380-500nm) can penetrate the lens and reach the retina. Long-term exposure of the retina to blue light will produce free radicals, and these free radicals will cause the death of retinal pigment epithelial cells, thereby leading to photosensitivity. Cells lack nutrients, eventually causing vision damage. And the degree of damage increases rapidly as the wavelength of light waves decreases. Blue light has been proven by research to be the most harmful visible light. Medical research also shows that the human eye is insensitive to the vision and color discrimination of purple light and part of blue light in the 380-480nm ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/137G02F1/1335G02F1/1333
CPCG02F1/1333G02F1/133514G02F1/13718
Inventor 李刚任远飞薛永富唐海江张彦
Owner NINGBO EXCITON TECH
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