Transparent protective film and electronic device

Abstract

The application discloses a transparent protective film and an electronic device, wherein the transparent protective film comprises a nano-scratch-resistant layer, a temperature-variable layer and a self-repairing layer; the temperature-variable layer is arranged between the nano-scratch-resistant layer and the self-repairing layer; the nano-scratch-resistant layer comprises silica nanoparticles; the temperature-variable layer comprises nano-temperature-sensitive color-changing microcapsules; and the self-repairing layer comprises acrylate pressure-sensitive adhesive containing nano self-repairing microspheres. The transparent protective film can avoid the occurrence of a warping phenomenon and can self-repair micro-warping of the film material.

Description

Technical Field

[0001] This invention relates to the field of protective film technology, and more particularly to a transparent protective film and an electronic device. Background Technology

[0002] Existing protective films for electronic products, especially those for automotive electronic products, are prone to peeling and damage after application. Current technology makes maintenance inconvenient, and when these problems occur, regardless of their size, they can usually only be solved by replacing the entire protective film. If even minor defects are addressed by replacing the entire protective film, it will result in waste and increase the cost of using the product.

[0003] Existing ordinary protective films also have problems such as the inability to provide warnings about temperature and strong light, and the adhesive layer being prone to fingerprints, making cleaning difficult. When fingerprints are stuck to the adhesive layer, it will turn yellow and become blurry after long-term use, thus affecting the display clarity. Furthermore, when the screen of an electronic product operates at too high a temperature or is exposed to strong light, it will cause the screen to become unclear, affecting the usage effect and lifespan.

[0004] How to solve the above-mentioned technical problems has become an urgent technical challenge for the industry. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a transparent protective film and electronic device that avoids warping and can self-repair the micro-warping of the film material.

[0006] To achieve the above objectives, this application provides a transparent protective film, comprising: Nano-scratch-resistant layer, temperature-sensitive layer, and self-healing layer; A thermochromic layer is positioned between the nano-scratch-resistant layer and the self-healing layer; The nano-scratch-resistant layer includes silica nanoparticles; The thermochromic layer includes nano-thermosensitive color-changing microcapsules; The self-healing layer consists of an acrylic pressure-sensitive adhesive containing nano-self-healing microspheres.

[0007] Preferably, the diameter of the self-healing nanospheres is 1-2 micrometers; The self-healing nanospheres are transparent.

[0008] Preferably, the diameter of the nano-thermosensitive color-changing microcapsules is 5-10 micrometers; The color-changing temperature range of the nano-thermosensitive color-changing microcapsules is 25-60℃.

[0009] Preferably, the surface hardness of the nano-scratch-resistant layer is 6H.

[0010] Preferably, a buffer layer is provided between the temperature-sensitive layer and the self-healing layer; The buffer layer has a perforated mesh structure resembling the veins of a cicada's wing.

[0011] Preferably, the mesh width of the hollow mesh structure in the buffer layer is 10-20 micrometers, and the nodes are nanosphere protrusions with a diameter of 500 nanometers to 1 micrometer.

[0012] Preferably, the buffer layer is made of polyimide material.

[0013] Preferably, a privacy screen layer is provided between the nano-scratch-resistant layer and the thermochromic layer; The privacy screen is composed of a variable microlens array; The diameter of the microlens is 30-50 micrometers; The spacing between adjacent microlenses is 50-60 micrometers.

[0014] Preferably, the privacy layer is made of a flexible transparent polycarbonate material.

[0015] To achieve the above objectives, this application also provides an electronic device including the aforementioned transparent protective film.

[0016] The above technical solutions avoid warping, can self-repair micro-warping of the film material, reduce the occurrence of whole-sheet protective films, and save resources; avoid yellowing and blurring caused by fingerprints when applied to terminal products; the temperature-changing layer provides timely warning of high temperatures, with better sensitivity; the privacy layer not only provides privacy protection but also solves the technical defects of traditional privacy films such as large brightness loss and fixed viewing angle; the buffer layer improves the product's impact resistance, reduces screen breakage, and the mesh gaps also improve heat dissipation performance.

[0017] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the transparent protective film structure according to an embodiment of this application.

[0019] Figure label: 101-Nano scratch-resistant layer; 102-Privacy protection layer; 103-Temperature-changing layer; 104-Buffer layer; 105-Self-healing layer. Detailed Implementation

[0020] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0021] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0022] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0023] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.

[0024] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.

[0025] The transparent protective film of this application includes: Nano-scratch-resistant layer 101, temperature-sensitive layer 103, and self-healing layer 105; The thermochromic layer 103 is disposed between the nano anti-scratch layer 101 and the self-healing layer 105; The nano-scratch-resistant layer 101 includes silica nanoparticles; Thermochromic layer 103 includes nano-thermosensitive color-changing microcapsules; The self-healing layer 105 includes an acrylic pressure-sensitive adhesive with nano-self-healing microspheres.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1 Figure 1 This is a schematic diagram of the transparent protective film structure according to an embodiment of this application, as shown below. Figure 1 As shown, the transparent protective film of this application embodiment includes: a nano-scratch-resistant layer 101, a thermochromic layer 103, and a self-healing layer 105.

[0028] In one exemplary embodiment, the thermochromic layer 103 is disposed between the nano-scratch-resistant layer 101 and the self-healing layer 105.

[0029] In one exemplary embodiment, the nano-scratch-resistant layer 101 includes silica nanoparticles.

[0030] In one exemplary embodiment, the thickness of the nano-scratch-resistant layer 101 is 2-3 micrometers.

[0031] In one exemplary embodiment, the surface hardness of the nano-scratch-resistant layer 101 is 6H.

[0032] In one exemplary embodiment, the nano-scratch-resistant layer 101 is transparent and has anti-scratch, anti-oil, and hydrophobic properties. It is not easy to attract fingerprints and is easy to clean.

[0033] In one exemplary embodiment, the thickness of the thermochromic layer 103 is 10-15 micrometers.

[0034] In one exemplary embodiment, the thermochromic layer 103 includes nano-thermochromic microcapsules, that is, nano-thermochromic microcapsules are uniformly dispersed within the thermochromic layer 103.

[0035] In one exemplary embodiment, the diameter of the nano-thermochromic microcapsule is 5-10 micrometers, and its color-changing temperature is 25-60°C, that is, the thermochromic layer 103 has a corresponding color change function at 25-60°C.

[0036] In one exemplary embodiment, the light transmittance of the thermochromic layer 103 in its transparent state is greater than 90%, and it does not obscure the displayed content after changing color.

[0037] In one exemplary embodiment, the thermochromic layer 103 may also be externally connected to a temperature sensor, if necessary.

[0038] In one exemplary embodiment, the thickness of the self-healing layer 105 is 50-60 micrometers.

[0039] In one exemplary embodiment, the self-healing layer 105 comprises an acrylic pressure-sensitive adhesive with self-healing nanospheres.

[0040] In one exemplary embodiment, the diameter of the self-healing nanospheres is 1-2 micrometers.

[0041] In one exemplary embodiment, the self-healing nanospheres are transparent.

[0042] In one exemplary embodiment, the self-healing layer 105 has a light transmittance of more than 95%, can be repeatedly applied, and features automatic air release, automatic repair, and fingerprint resistance.

[0043] In one exemplary embodiment, a buffer layer 104 is further provided between the thermochromic layer 103 and the self-healing layer 105.

[0044] In one exemplary embodiment, the thickness of the buffer layer 104 is 20-30 micrometers.

[0045] In one exemplary embodiment, the buffer layer 104 is made of a polyimide material.

[0046] In one exemplary embodiment, the buffer layer 104 is provided with a perforated mesh structure resembling a cicada's wing.

[0047] In one exemplary embodiment, the mesh vein width of the hollow mesh structure within the buffer layer 104 is 10-20 micrometers, and the nodes are nanospherical protrusions with a diameter of 500 nanometers to 1 micrometer.

[0048] In one exemplary embodiment, the buffer layer 104 has an elongation at break of more than 300%, combining rigidity and flexibility, and has buffering, heat dissipation and shock protection properties.

[0049] In one exemplary embodiment, the hollowed-out mesh structure resembling a cicada's wing can be made by creating a mesh mold using laser direct writing technology, and then by UV curing polyimide material to achieve integrated molding of the hollowed-out mesh and nano-spherical nodes, with a surface roughness Ra of less than 8 nanometers.

[0050] In one exemplary embodiment, a privacy layer 102 is further provided between the nano-scratch-resistant layer 101 and the thermochromic layer 103.

[0051] In one exemplary embodiment, the privacy shield 102 has a thickness of 30-40 micrometers.

[0052] In one exemplary embodiment, the privacy layer 102 is made of a flexible transparent polycarbonate material.

[0053] In one exemplary embodiment, the privacy layer 102 consists of a variable microlens array.

[0054] In one exemplary embodiment, the diameter of the microlens is 30-50 micrometers; the spacing between adjacent microlenses is 50-60 micrometers.

[0055] In one exemplary embodiment, the deflection angle of the microlens is 0-15°.

[0056] In one exemplary embodiment, a light sensor is provided on the periphery of the privacy layer 102 as needed to detect the ambient light intensity and then deflect the microlens according to the ambient light intensity.

[0057] Example 2 Example 2 is an electronic device that includes the transparent protective film of the above embodiments, i.e., the electronic device with the above embodiments attached to its surface, such as the transparent protective film of the above embodiments attached to an electronic device with a display screen.

[0058] In one exemplary embodiment, the electronic device includes an in-vehicle display device.

[0059] Example 3 Example 3 is a means of transportation that includes the electronic equipment described in the above examples.

[0060] It will be understood by those skilled in the art that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A transparent protective film, characterized in that, It includes: a nano-scratch-resistant layer, a temperature-changing layer, and a self-healing layer; The thermochromic layer is disposed between the nano-scratch-resistant layer and the self-healing layer; The nano-scratch-resistant layer includes silicon dioxide nanoparticles; The thermochromic layer includes nano-thermosensitive color-changing microcapsules; The self-healing layer comprises an acrylic pressure-sensitive adhesive with self-healing nanospheres.

2. The transparent protective film according to claim 1, characterized in that, The diameter of the self-healing nanospheres is 1-2 micrometers; The self-healing nanospheres are transparent.

3. The transparent protective film according to claim 1, characterized in that, The diameter of the nano-thermosensitive color-changing microcapsules is 5-10 micrometers; The color-changing temperature range of the nano-thermosensitive color-changing microcapsules is 25-60℃.

4. The transparent protective film according to claim 1, characterized in that, The surface hardness of the nano-scratch-resistant layer is 6H.

5. The transparent protective film according to claim 1, characterized in that, A buffer layer is also provided between the temperature-sensitive layer and the self-healing layer; The buffer layer has a hollowed-out mesh structure resembling the veins of a cicada's wing.

6. The transparent protective film according to claim 5, characterized in that, The hollowed-out mesh structure within the buffer layer has a mesh width of 10-20 micrometers, and the nodes are nanosphere protrusions with a diameter of 500 nanometers to 1 micrometer.

7. The transparent protective film according to claim 5, characterized in that, The buffer layer is made of polyimide material.

8. The transparent protective film according to claim 1, characterized in that, An anti-peeping layer is also provided between the nano-scratch-resistant layer and the thermochromic layer; The privacy shield is composed of a variable microlens array; The diameter of the microlens is 30-50 micrometers; The spacing between adjacent microlenses is 50-60 micrometers.

9. The transparent protective film according to claim 8, characterized in that, The privacy layer is made of flexible transparent polycarbonate material.

10. An electronic product, characterized in that, It includes the transparent protective film as described in any one of claims 1-9.

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