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Anti-peeping film

A technology of anti-spy film and anti-spy layer, applied in the field of optics, can solve the problems of low light transmittance of anti-spy film, achieve good anti-spy effect, good light transmittance, and improve visual experience

Active Publication Date: 2019-07-05
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low light transmittance of the existing anti-peeping film, the present invention provides an anti-peeping film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The invention provides an anti-peeping film. The anti-peeping film includes an upper supporting layer, an anti-peeping layer and a lower supporting layer in sequence. The anti-peeping layer includes a diffusion unit and a light-transmitting unit, and the light-transmitting unit is filled in the diffusion unit. Between, the diffusion unit includes light diffusion particles.

[0046] The content of the light-diffusing particles in the privacy-preventing layer is 1%, and the content is percentage by weight.

[0047] The specific preparation method is as follows:

[0048] Mix PBMA (refractive index: 1.40) particles with an average particle size of 1 μm with UV-cured acrylic resin glue (refractive index: 1.70) at a mass ratio of 3:22, and stir with a high-speed disperser at a speed of 1000 rpm in the dark 60min to prepare the resin mixture for preparing the diffusion unit. Apply the resin mixture on the transparent PET surface (lower support layer) with polyurethane pre-co...

Embodiment 2

[0050] The anti-peeping film provided in Example 1. The content of light-diffusing particles in the anti-peeping layer is 30%.

[0051] Mix PBMA (refractive index: 1.48) particles with an average particle size of 1 μm with UV-cured acrylic resin glue (refractive index: 1.68) at a mass ratio of 3:22, and stir with a high-speed disperser at a speed of 1000 rpm in the dark 60min to prepare the resin mixture for preparing the diffusion unit. The resin mixture is coated on the surface of transparent PET with polyurethane pre-coating on one side, extruded by engraved rollers, and at a speed of 6-20m / min, reaching 450mj / cm 2 The energy high-pressure mercury lamp irradiates to make the diffusion unit solidify and form, and obtain the PET with the diffusion unit on the surface. Then apply UV-cured acrylic resin glue (refractive index: 1.68) on the surface of the diffusion unit, so that the acrylic resin glue completely fills the gap between the diffusion units, and then it is extrude...

Embodiment 3

[0053] The anti-peeping film provided in Example 1. The content of light diffusion particles in the anti-peeping layer is 10%.

[0054] Mix PBMA (refractive index: 1.48) particles with an average particle size of 2 μm with UV-cured acrylic resin glue (refractive index: 1.68) at a mass ratio of 3:22, and stir with a high-speed disperser at a speed of 1000 rpm in the dark 60min to prepare the resin mixture for preparing the diffusion unit. The resin mixture is coated on the surface of transparent PET with polyurethane pre-coating on one side, extruded by engraved rollers, and at a speed of 6-20m / min, reaching 450mj / cm 2 The energy high-pressure mercury lamp irradiates to make the diffusion unit solidify and form, and obtain the PET with the diffusion unit on the surface. Then apply UV-cured acrylic resin glue (refractive index: 1.68) on the surface of the diffusion unit, so that the acrylic resin glue completely fills the gap between the diffusion units, and then it is extrude...

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Abstract

The invention belongs to the technical field of optics and relates to an anti-peeping film. The invention aims to solve a problem that the light transmittance of an existing anti-peeping film is low.The anti-peeping film provided by the invention comprises an upper supporting layer, an anti-peeping layer and a lower supporting layer which are sequentially distributed; the anti-peeping layer comprises diffusion units and light-transmitting units; spaces between the diffusion units are filled with the light-transmitting units; the diffusion units comprise light diffusion particles. The light transmittance of the anti-peeping film can be increased, the light-transmitting units can be prevented from being blackened, a visual effect is improved, and user experience is better.

Description

technical field [0001] The invention relates to the field of optical technology, in particular, the invention relates to a privacy film. Background technique [0002] The anti-spy film adopts the world-leading micro-louver (MICROLOUVER) optical patent technology, so that the display can be seen within 60 degrees from the front, and the area beyond this range can only see a black screen, thereby protecting the displayed information. For example, it can be used in mobile phones, personal computers, ATM machines, etc.; at the same time, it can also be used in places where the viewing angle of the display needs to be limited, such as vehicle display, etc., to improve environmental safety. [0003] The traditional anti-spy film uses evenly arranged black absorbing units or grids with fixed intervals to limit the angle of light emitted by the display to within 60 degrees. When viewing the display from an angle beyond this range, the light emitted by the display will be blocked. T...

Claims

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Application Information

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IPC IPC(8): G02B5/02
CPCG02B5/0242
Inventor 金亚东熊斐杨承翰
Owner NINGBO CHANGYANG TECH
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