Full-transparent peep-proof protective film

Abstract

The utility model discloses a full-transparent peep-proof protective film. The full-transparent peep-proof protective film comprises a protective film main body layer, a first adhesive layer, a base material layer, a second adhesive layer and a release film, and the first adhesive layer is adhered and fixed on the bottom surface of the protective film main body layer. The full-transparent PET is adopted, the texture layer used for light reflection and refraction is formed on the surface of the full-transparent PET in a matched mode, meanwhile, the optical coating is compositely overlaid on the surface of the texture layer and fluctuates along the texture layer in a concave-convex mode, the light transmittance of the product can reach 60% or above, when a user looks from the front side, the screen does not become dark, the brightness of the screen is not affected, and the impression of the screen is improved; according to the anti-peeping display screen, the display content can be seen more clearly, the eye burden of a user cannot be increased, vision health is facilitated, when the display screen is not seen from the front side, the light reflection and light diffusion effects can be achieved through the optical coating, bystanders can only see white, silver or colored light and cannot see the content displayed on the screen clearly, and therefore the good anti-peeping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of protective films, in particular to a fully transparent anti-peeping protective film. Background Art

[0002] The rapid development of electronic devices (such as mobile phones and tablets) has not only changed people's production and lifestyles, but has also brought great convenience and fun to people's lives. However, the problem of privacy leakage caused by the use of electronic devices has gradually attracted people's attention. Due to the wide viewing angles of existing electronic device screens, the security of personal privacy such as bank account numbers and passwords is not guaranteed for individuals. For businesses, commercial secrets may also be peeped, facing a great risk of leakage. Therefore, a protective film is needed to reduce the risk of privacy leakage caused by the use of electronic devices.

[0003] Privacy film is an optical protective film that effectively protects electronic device screens from prying eyes. Made from special materials and craftsmanship, the core technology behind the privacy film lies in its ultra-fine Venetian blinds optical technology. This technology utilizes a layer of uneven microstructures or micro-prisms similar to a grating array on the surface. Combined with a translucent black PET material, it blocks light from non-frontal directions, preventing it from reaching the human eye. However, those directly in the center of the viewing angle facing the screen can see through the film, effectively protecting privacy.

[0004] Since existing anti-peeping protective films are made of translucent black PET material, the light transmittance of this anti-peeping protective film is only about 50%, which will make the screen of the electronic device darker and directly affect the brightness of the screen. It not only affects the screen appearance and makes it difficult to see the displayed content, but also increases the eye burden of the user during use, which is not conducive to vision health over time. Utility Model Content

[0005] In view of this, the present invention aims to address the shortcomings of the prior art, and its main purpose is to provide a fully transparent privacy protection film, which can effectively solve the problem of low transmittance of the existing privacy protection film resulting in poor screen viewing.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A fully transparent anti-peep protective film comprises a protective film main layer, a first adhesive layer, a substrate layer, a second adhesive layer and a release film; the first adhesive layer is bonded and fixed to the bottom surface of the protective film main layer, the surface of the substrate layer is bonded and fixed to the bottom surface of the first adhesive layer, the second adhesive layer is bonded and fixed to the bottom surface of the substrate layer, and the release film is bonded and fixed to the bottom surface of the second adhesive layer; the characteristic is that: the substrate layer comprises fully transparent PET and an optical coating layer; a texture layer for light reflection and refraction is formed on the surface of the fully transparent PET, the optical coating layer is compositely superimposed on the surface of the texture layer and undulates along the texture layer, and the second adhesive layer is bonded and fixed to the bottom surface of the fully transparent PET.

[0008] As a preferred solution, the optical coating includes multiple first electroplating layers and multiple second electroplating layers. The multiple second electroplating layers and the multiple first electroplating layers are alternately composited and superimposed on the surface of the texture layer and are concave and convex along the texture layer. The first electroplating layer is made of silicon, and the second electroplating layer is made of titanium pentoxide to achieve better brightening and reflection effects.

[0009] As a preferred solution, the thickness of the fully transparent PET is 25-100 μm, the thickness of the texture layer is 25-200 μm, the thickness of the first electroplating layer is 0.1-5 μm, and the thickness of the second electroplating layer is 0.1-5 μm, so as to achieve better reflection and scattering effects and achieve better anti-peeping effect.

[0010] As a preferred solution, the substrate layer further includes a transparent protective layer, which is formed on the surface of the optical coating. The first adhesive layer is combined with the surface of the transparent protective layer to prevent the optical coating from being corroded by the first adhesive layer.

[0011] As a preferred solution, the texture layer includes a plurality of convex portions arranged at intervals, a concave portion is formed between two adjacent convex portions, and the concave portion is filled by the first adhesive layer.

[0012] As a preferred solution, the cross section of the protrusion is square, triangular, arc-shaped or trapezoidal.

[0013] As a preferred solution, the texture layer is formed by curing with UV glue, which has a simple structure and is easy and convenient to form.

[0014] As a preferred solution, the main layer of the protective film is made of PET, acrylic or glass.

[0015] As a preferred solution, the first adhesive layer is made of OCA adhesive material, which provides firm and reliable bonding.

[0016] As a preferred solution, the second adhesive layer is made of silicone material, which is convenient for repeated adhesion to the screen of the electronic device.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0018] By adopting fully transparent PET and forming a texture layer for reflection and refraction on the surface of the fully transparent PET, and at the same time superimposing an optical coating on the surface of the texture layer and undulating along the texture layer, the light transmittance of this product can reach more than 60%. When viewed from the front, the screen will not dim, and the brightness of the screen will not be affected, which improves the screen viewing experience and makes it easier to see the displayed content. It will not increase the burden on the user's eyes and is beneficial to vision health. When viewed from the side, the optical coating can reflect and scatter light. Bystanders can only see white, silver or colored light and cannot see the content displayed on the screen, thereby achieving a good anti-peeping effect.

[0019] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of a preferred embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 Enlarged schematic diagram of position A in the middle.

[0022] Description of the accompanying drawings:

[0023] 10. Protective film main layer 20. First adhesive layer

[0024] 30. Base material layer 31. Fully transparent PET

[0025] 32. Optical coating 321. First electroplating layer

[0026] 322, second electroplating layer 33, texture layer

[0027] 331, convex part 332, concave position

[0028] 34. Transparent protective layer 40. First adhesive layer

[0029] 50. Release film. DETAILED DESCRIPTION

[0030] Please refer to Figure 1 and Figure 2 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a protective film main layer 10, a first adhesive layer 20, a substrate layer 30, a second adhesive layer 40 and a release film 50.

[0031] The main layer 10 of the protective film is made of PET, acrylic or glass, or other transparent materials, without limitation.

[0032] The first adhesive layer 20 is adhered and fixed on the bottom surface of the protective film main body layer 10. The first adhesive layer 20 is made of OCA adhesive material, and the bonding is firm and reliable.

[0033] The surface of the substrate layer 30 is bonded to the bottom surface of the first adhesive layer 20 and fixed together. Specifically, the substrate layer 30 includes a fully transparent PET layer 31 and an optical coating layer 32. A textured layer 33 for light reflection and refraction is formed on the surface of the fully transparent PET layer 31. The optical coating layer 32 is laminated on the textured layer 33, creating an undulating pattern along the textured layer 33. Furthermore, the optical coating layer 32 includes multiple first electroplated layers 321 and multiple second electroplated layers 322. The multiple second electroplated layers 322 and multiple first electroplated layers 321 are alternately laminated on the textured layer 33, creating an undulating pattern along the textured layer 33. The first electroplated layers 321 are made of silicon, and the second electroplated layers 322 are made of titanium pentoxide, to achieve enhanced brightness and reflection effects. In this embodiment, the substrate layer 30 also includes a transparent protective layer 34, which is formed on the surface of the optical coating 32. The first adhesive layer 20 is bonded to the surface of the transparent protective layer 34 to prevent the optical coating 32 from being corroded by the first adhesive layer 20, thereby ensuring the stability and reliability of the optical coating 32. Furthermore, the thickness of the fully transparent PET 31 is 25-100 μm, the thickness of the texture layer 33 is 25-200 μm, the thickness of the first electroplating layer 321 is 0.1-5 μm, and the thickness of the second electroplating layer 322 is 0.1-5 μm, to provide better light reflection and light scattering, achieving a better privacy protection effect. The texture layer 33 includes a plurality of spaced-apart protrusions 331, with recesses 332 formed between adjacent protrusions 331. The recesses 332 are filled by the first adhesive layer 20. The cross-section of the protrusions 331 can be square, triangular, arcuate, or trapezoidal, etc., without limitation. In addition, the texture layer 33 is formed by UV glue curing and can be printed, sprayed or transferred, etc., with a simple structure and easy and convenient molding. In addition, the sum of the second electroplating layer 322 and the first electroplating layer 321 is more than nine layers to achieve better reflection and scattering effects.

[0034] The second adhesive layer 40 is attached to the bottom surface of the substrate layer 30. In this embodiment, the second adhesive layer 40 is attached to the bottom surface of the fully transparent PET 31. In this embodiment, the second adhesive layer 40 is made of silicone material, which is convenient for repeated adhesion to the screen of the electronic device.

[0035] The release film 50 is adhered and fixed on the bottom surface of the second adhesive layer 40 .

[0036] During use, the release film 50 is removed, and then the second adhesive layer 40 is adhered to the screen of the electronic device to secure it. When viewed from the front, the user can clearly see the content displayed on the electronic device screen through the protective film. When viewed from the side, the optical coating 32 acts as a reflector and scatterer, and bystanders can only see white, silver, or colored light (red, orange, yellow, green, cyan, blue, or purple), and cannot clearly see the content displayed on the electronic device screen, thereby achieving a privacy protection effect.

[0037] The design focus of this utility model is: by adopting fully transparent PET, and forming a texture layer for reflection and refraction on the surface of the fully transparent PET, and at the same time superimposing an optical coating on the surface of the texture layer and undulating along the texture layer, the light transmittance of this product can reach more than 60%. When viewed from the front, the screen will not dim, and the brightness of the screen will not be affected, which improves the screen viewing experience, makes it easier to see the displayed content, does not increase the burden on the user's eyes, and is beneficial to vision health. When viewed from the side not facing the front, the optical coating can reflect and scatter light, and bystanders can only see white, silver or colored light, and cannot see the content displayed on the screen, thereby achieving a good anti-peeping effect.

[0038] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fully transparent privacy film, comprising a protective film main body layer, a first adhesive layer, a substrate layer, a second adhesive layer, and a release film; the first adhesive layer is bonded and fixed to the bottom surface of the protective film main body layer, the surface of the substrate layer is bonded and fixed to the bottom surface of the first adhesive layer, the second adhesive layer is bonded and fixed to the bottom surface of the substrate layer, and the release film is bonded and fixed to the bottom surface of the second adhesive layer; characterized in that: The substrate layer includes fully transparent PET and an optical coating; a texture layer for light reflection and refraction is formed on the surface of the fully transparent PET, the optical coating is compositely superimposed on the surface of the texture layer and has undulations along the texture layer, and the second adhesive layer is adhered and fixed to the bottom surface of the fully transparent PET.

2. The fully transparent privacy protection film according to claim 1, characterized in that: The optical coating includes multiple first electroplating layers and multiple second electroplating layers. The multiple second electroplating layers and the multiple first electroplating layers are alternately composited and superimposed on the surface of the texture layer and are concave and convex along the texture layer. The first electroplating layer is made of silicon, and the second electroplating layer is made of titanium pentoxide.

3. The fully transparent privacy protection film according to claim 2, characterized in that: The thickness of the fully transparent PET is 25-100 μm, the thickness of the texture layer is 25-200 μm, the thickness of the first electroplating layer is 0.1-5 μm, and the thickness of the second electroplating layer is 0.1-5 μm.

4. The fully transparent privacy protection film according to claim 1, characterized in that: The substrate layer further includes a transparent protective layer, which is formed on the surface of the optical coating layer. The first adhesive layer is combined with the surface of the transparent protective layer.

5. The fully transparent privacy protection film according to claim 1, characterized in that: The texture layer includes a plurality of convex parts arranged at intervals, and a concave part is formed between two adjacent convex parts, and the concave part is filled by the first adhesive layer.

6. The fully transparent privacy protection film according to claim 5, characterized in that: The cross section of the convex portion is square, triangular, arc-shaped or trapezoidal.

7. The fully transparent privacy protection film according to claim 1, characterized in that: The texture layer is cured and formed by UV glue.

8. The fully transparent privacy protection film according to claim 1, characterized in that: The main layer of the protective film is made of PET, acrylic or glass.

9. The fully transparent privacy protection film according to claim 1, characterized in that: The first adhesive layer is made of OCA adhesive.

10. The fully transparent privacy protection film according to claim 1, characterized in that: The second adhesive layer is made of silicone.

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