Composite copper foil with low reflectivity, transparent conductive film and 5G transparent antenna

Abstract

The utility model provides a composite copper foil with low reflectivity, a transparent conductive film and a 5G transparent antenna. The composite copper foil comprises a polymer base film; the blackening layer is plated on at least one surface of the polymer base film; and the copper metal layer is plated on the other surface, far away from the polymer base film, of the blackening layer. According to the composite copper foil disclosed by the invention, the blackening layer is plated on at least one surface of the polymer base film, and then the copper metal layer is plated on the other surface of the blackening layer, so that the reflectivity of a transparent conductive grid circuit can be remarkably reduced after the composite copper foil is made into a transparent conductive film through a circuit etching process due to the specific structural design; therefore, an excellent transparent effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of 5G technology, specifically to a composite copper foil with low reflectivity, a transparent conductive film, and a 5G transparent antenna. Background Technology

[0002] With the development of mobile networks and services, especially the rapid development of 5G technology, the coverage of mobile networks is gradually expanding. However, compared with traditional 4G transmission technology, 5G transmission technology has a significantly shorter transmission distance. To solve the coverage problem of 5G communication technology, micro base stations combined with traditional indoor distribution systems or repeaters combined with traditional indoor distribution systems are important solutions.

[0003] For micro base stations to be deployed indoors, they need to be small, aesthetically pleasing, easy to integrate, and flexible in form. Therefore, integrated micro base station solutions that combine miniaturized antennas, miniaturized RF processing components, and miniaturized baseband processing units are beneficial for the rapid deployment of 5G technology. However, existing micro base station antennas cannot be made transparent, which makes them incompatible with the surrounding environment, lacking concealment, and easily discovered, leading to misunderstandings or theft. Therefore, making 5G antennas transparent would greatly promote indoor coverage of micro base stations. To achieve transparency, a suitable transparent conductive film is needed as the carrier for the radiating element.

[0004] Traditional methods for preparing transparent conductive films include transparent conductive meshes, silver nanowire films, screen printing, and ITO glass. Based on the application requirements of 5G transmission, transparent conductive meshes, with their high conductivity and consistency, are best suited as carriers for 5G transparent antennas. Copper is generally used as the material for the mesh circuitry in transparent conductive meshes. However, pure copper is a highly reflective material. Although it can meet the light transmittance requirements when used as a transparent conductive mesh, the high reflectivity of copper circuitry makes it conspicuous due to reflected light, significantly reducing its transparency. Utility Model Content

[0005] This utility model discloses a composite copper foil with low reflectivity, a transparent conductive film, and a 5G transparent antenna to improve the above-mentioned problems.

[0006] The present invention adopts the following solution:

[0007] A composite copper foil with low reflectivity, comprising:

[0008] Polymer-based film;

[0009] A blackening layer is deposited on at least one surface of the polymer base film;

[0010] A copper metal layer is deposited on the other surface of the blackened layer, away from the polymer base film.

[0011] Preferably, the polymer base film is one of PET, PP, and PI.

[0012] Preferably, the thickness of the polymer base film is 1-200 μm.

[0013] Preferably, the blackening layer is one of copper, iron, nickel, zinc, aluminum, silver, and palladium.

[0014] Preferably, the blackening layer is one of the oxides, nitrides, and carbides of copper, iron, nickel, zinc, aluminum, silver, and palladium.

[0015] Preferably, the thickness of the blackening layer is 1-2000 nm.

[0016] Preferably, the thickness of the copper metal layer is 0.1-20 μm.

[0017] This utility model embodiment also provides a transparent conductive film, which is formed by etching lines using a composite copper foil with low reflectivity as described above.

[0018] This utility model embodiment also provides a 5G transparent antenna, which is fabricated based on the transparent conductive film as described above.

[0019] In summary, the composite copper foil of this embodiment has a specific structural design, in which a blackening layer is deposited on at least one surface of the polymer base film, and a copper metal layer is deposited on the other surface of the blackening layer. This allows the composite copper foil to be made into a transparent conductive film through a circuit etching process, which can significantly reduce the reflectivity of the transparent conductive grid circuit and thus have excellent transparency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a composite copper foil with low reflectivity provided in an embodiment of the present invention.

[0022] Figure 2 This is another structural schematic diagram of a composite copper foil with low reflectivity provided in this embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The first embodiment of this utility model provides a composite copper foil with low reflectivity, comprising:

[0025] Polymer-based film 10.

[0026] In this embodiment, the polymer base film can be one of PET, PP, or PI, and its thickness is 1-200 μm.

[0027] A blackening layer 20 is deposited on at least one surface of the polymer base film 10.

[0028] In this embodiment, the blackening layer 20 is used to reduce the reflectivity of the copper foil, thereby improving its transparency. The blackening layer 20 is deposited on at least one surface of the polymer base film 10, meaning that the blackening layer 20 can be deposited on only one surface of the polymer base film 10, such as... Figure 1 As shown, it can also be deposited on both surfaces of the polymer base film 10, such as... Figure 2 As shown.

[0029] The blackening layer 20 is one of copper, iron, nickel, zinc, aluminum, silver, and palladium; or one of the oxides, nitrides, and carbides of copper, iron, nickel, zinc, aluminum, silver, and palladium.

[0030] Furthermore, the blackening layer 20 can also be formed by stacking various metals or their oxides, nitrides, and carbides, and is not limited to containing only a single metal, its oxide, nitride, or carbide. All of these solutions are within the protection scope of this utility model.

[0031] The thickness of the blackening layer 30 is 1-2000 nm.

[0032] A copper metal layer 30 is deposited on the other surface of the blackening layer 20, away from the polymer base film 10.

[0033] Preferably, the thickness of the copper metal layer 30 is 0.1-20 μm.

[0034] The second embodiment of this utility model also provides a transparent conductive film, which is formed by etching a composite copper foil with low reflectivity as described in any of the above embodiments.

[0035] The third embodiment of this utility model also provides a 5G transparent antenna, which is made based on the transparent conductive film as described above.

[0036] Furthermore, it should be noted that in other embodiments of this utility model, other transparent devices, such as touch screens, can also be prepared based on the transparent conductive film, and these solutions are all within the protection scope of this utility model.

[0037] In summary, the composite copper foil of this embodiment has a blackening layer 20 deposited on at least one surface of the polymer base film 10, and a copper metal layer 30 deposited on the other surface of the blackening layer 20. This specific structural design allows the composite copper foil to be made into a transparent conductive film by a circuit etching process, with at least one surface of the copper conductive grid covered by a blackening layer. The blackening layer material is characterized by its significantly lower light reflectivity than copper metal, which can significantly reduce the light reflectivity of the transparent conductive grid circuit and prevent the transparent copper conductive grid from producing a dazzling effect due to reflected light under certain lighting angles because of the high reflectivity of copper, thus affecting the transparency of the transparent conductive grid.

[0038] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A composite copper foil having low reflectance, characterized by, Comprise: Polymer base film; Blackening layer, plated in at least one surface of the polymer base film; Copper metal layer, plated in another surface of the blackening layer away from the polymer base film base film.

2. The composite copper foil having low reflectance according to claim 1, characterized by, The polymer base film is one of PET, PP, PI.

3. The composite copper foil having low reflectance according to claim 1, characterized by, The thickness of the polymer base film is 1-200μm.

4. The composite copper foil having low reflectance according to claim 1, characterized by, The blackening layer is one of copper, iron, nickel, zinc, aluminum, silver, palladium.

5. The composite copper foil with low reflectance according to claim 4, characterized by, The blackening layer is one of oxide, nitride, carbide of copper, iron, nickel, zinc, aluminum, silver, palladium.

6. The composite copper foil with low reflectance according to claim 1, wherein The thickness of the blackening layer is 1-2000nm.

7. The composite copper foil having low reflectance according to claim 1, wherein The thickness of the copper metal layer is 0.1-20μm.

8. A transparent conductive film, characterized by, Formed by line etching using the composite copper foil with low reflectivity as claimed in any one of claims 1 to 7.

9. A 5G transparent antenna, characterized by, Prepared based on the transparent conductive thin film as claimed in claim 8.

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