A novel metal mesh grid structure

Abstract

The utility model belongs to the technical field of electromagnetic protection, and disclose a novel metal mesh structure, including base, the top of base is fixedly installed one net grid metal layer, the top of one net grid metal layer is fixedly connected with one transparent medium layer, the top of one transparent medium layer is fixedly installed with two net grid metal layer. The utility model discloses through setting base, one net grid metal layer, one transparent medium layer and two net grid metal layer, the depth that one net grid metal layer and two net grid metal layer composed of three -dimensional framework increased electromagnetic wave and passed through metal mesh, and electromagnetic wave is in the propagation process, and the complex path of multilayer metal mesh and metal column construction makes it constantly interact with metal structure, and the contact area of electromagnetic wave and metal mesh is increased, and the structure improves the absorption and reflection efficiency of electromagnetic wave, significantly enhances the electromagnetic shielding capacity, effectively reduces the influence of electromagnetic interference to equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic protection technology, specifically a novel metal mesh structure. Background Technology

[0002] Metal mesh structures, as functional structures possessing both electromagnetic shielding and light transmission properties, are widely used in aerospace equipment optical windows, medical equipment viewing screens, consumer electronics touch display panels, and transparent protective components for 5G communication equipment, thanks to their flexible structural design and excellent material compatibility. They intercept electromagnetic waves through the conductivity of metal materials, while ensuring normal light transmission through the combination of mesh layout, transparent substrate, and dielectric layer. This satisfies the equipment's electromagnetic interference protection requirements while also considering the visual clarity of optical windows or the light transmission requirements of display components, providing key technical support for various scenarios with dual needs for "shielding + light transmission."

[0003] However, the aforementioned traditional metal mesh structures still have the following problems in practical applications: In terms of electromagnetic shielding effect, most traditional structures adopt a single-layer metal mesh design, which can only intercept electromagnetic waves once. Moreover, there is a lack of synergistic mechanism between the mesh and adjacent layers, resulting in limited shielding capability against electromagnetic waves in complex frequency bands. This makes it difficult to meet the needs of high-precision equipment for strong electromagnetic interference protection. At the same time, although some structures adopt multi-layer metal mesh, the electromagnetic performance between layers is not adjusted by a suitable transparent dielectric layer, nor is the electromagnetic wave action path optimized by staggered angles or three-dimensional connection design. As a result, the shielding effect of the multi-layer structure does not meet expectations, and even the performance conflict between layers affects the overall shielding stability. This makes it impossible to meet the needs of equipment for high-reliability shielding in increasingly complex electromagnetic environments. Therefore, it is necessary to improve them. Utility Model Content

[0004] The purpose of this invention is to address the above problems by providing a novel metal mesh structure with the advantage of good shielding effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel metal mesh structure, comprising a substrate, a first mesh metal layer fixedly installed at the top of the substrate, a first transparent dielectric layer fixedly connected to the top of the first mesh metal layer, a second mesh metal layer fixedly installed at the top of the first transparent dielectric layer, and a second transparent dielectric layer fixedly connected to the top of the second mesh metal layer. The substrate is made of polymethyl methacrylate, the first mesh metal layer is made of nickel-copper alloy, the first transparent dielectric layer is made of acrylic UV resin, the second mesh metal layer is made of copper, and the second transparent dielectric layer is made of polyimide resin.

[0006] In a preferred embodiment of this invention, the substrate is fixedly connected to the No. 1 grid metal layer through a coating process, and the No. 1 grid metal layer is fixedly connected to the No. 1 transparent dielectric layer through a coating process.

[0007] In a preferred embodiment of this invention, the first transparent dielectric layer is fixedly connected to the second mesh metal layer by vapor deposition, and the second mesh metal layer is fixedly connected to the second transparent dielectric layer by coating.

[0008] As a preferred embodiment of this invention, a transparent absorption layer is fixedly installed at the top of the second transparent medium layer, and the transparent absorption layer is made of graphene.

[0009] As a preferred embodiment of this invention, a reflective layer is fixedly connected to the top of the transparent absorption layer, and the reflective layer is made of a double-layer micro-ring metal mesh material.

[0010] As a preferred embodiment of the present invention, an antireflective film layer is fixedly installed on the top of the reflective layer, and the antireflective film layer is made of silicone resin.

[0011] As a preferred embodiment of this invention, a protective layer is fixedly connected to the top of the antireflective film layer, and the protective layer is made of polyethylene naphthalate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a base, a first mesh metal layer, a first transparent dielectric layer, and a second mesh metal layer, and the three-dimensional structure composed of the first and second mesh metal layers, increases the depth of electromagnetic waves passing through the metal mesh. During the propagation of electromagnetic waves, the complex path constructed by the multiple layers of metal mesh and metal pillars causes them to continuously interact with the metal structure, increasing the contact area between the electromagnetic waves and the metal mesh. This structure improves the absorption and reflection efficiency of electromagnetic waves, significantly enhances electromagnetic shielding capabilities, effectively reduces the impact of electromagnetic interference on equipment, and ensures stable operation of the equipment.

[0014] 2. This utility model incorporates a transparent absorption layer, a reflective layer, an antireflective film layer, and a protective layer. The transparent absorption layer is made of graphene, which can be adapted to different scenarios for light transmission and microwave shielding requirements by adjusting the opening area ratio of the mesh units. Furthermore, the material properties of graphene can convert and dissipate some electromagnetic energy, laying the foundation for subsequent shielding. The double-layer micro-ring metal mesh material of the reflective layer can reflect residual electromagnetic waves that are not completely absorbed by the transparent absorption layer. The antireflective film layer is made of silicone resin, and its core function is to reduce light reflection loss on the structural surface and between layers. The protective layer is made of polyethylene naphthalate, which can directly resist external physical scratches and chemical corrosion to the internal functional layers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded structural diagram of the entire utility model;

[0017] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 4 This is a front view of the overall structure of this utility model;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Substrate; 2. First grid metal layer; 3. First transparent dielectric layer; 4. Second grid metal layer; 5. Second transparent dielectric layer; 6. Transparent absorption layer; 7. Reflective layer; 8. Antireflective coating layer; 9. Protective layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 5 As shown, this utility model provides a novel metal mesh structure, including a base 1, a first mesh metal layer 2 fixedly installed at the top of the base 1, a first transparent dielectric layer 3 fixedly connected to the top of the first mesh metal layer 2, a second mesh metal layer 4 fixedly installed at the top of the first transparent dielectric layer 3, and a second transparent dielectric layer 5 fixedly connected to the top of the second mesh metal layer 4. The base 1 is made of polymethyl methacrylate, the first mesh metal layer 2 is made of nickel-copper alloy, the first transparent dielectric layer 3 is made of acrylic UV resin, the second mesh metal layer 4 is made of copper, and the second transparent dielectric layer 5 is made of polyimide resin.

[0023] The substrate 1 is the foundation of the entire metal mesh structure, providing support for the other layers. The first mesh metal layer 2 is tightly bonded to the substrate 1. The first transparent dielectric layer 3 is used to adjust the electromagnetic and optical properties. The second mesh metal layer 4 can further optimize the electromagnetic shielding performance and diffraction characteristics by controlling the stacking angle and spacing thickness. The second transparent dielectric layer 5 is a protective layer 9 set on the surface of the second mesh metal layer 4, protecting it from the influence of the external environment. The first mesh metal layer 2 and the second mesh metal layer 4 are firmly connected by metal pillars. This structural design greatly enhances the overall stability and lays a solid physical foundation for efficient electromagnetic shielding.

[0024] The substrate 1 is fixedly connected to the first grid metal layer 2 through a coating process, and the first grid metal layer 2 is fixedly connected to the first transparent dielectric layer 3 through a coating process.

[0025] The acrylic UV resin material of the first transparent dielectric layer 3 can adjust electromagnetic and optical properties, providing a transition for subsequent laminations.

[0026] Among them, the first transparent dielectric layer 3 is fixedly connected to the second grid metal layer 4 through vapor deposition, and the second grid metal layer 4 is fixedly connected to the second transparent dielectric layer 5 through coating.

[0027] The angle between the second grid metal layer 4 and the first grid metal layer 2 can further optimize the electromagnetic shielding effect and reduce diffraction interference.

[0028] Among them, a transparent absorption layer 6 is fixedly installed at the top of the second transparent medium layer 5, and the transparent absorption layer 6 is made of graphene.

[0029] Graphene mesh films exhibit different light transmission and microwave shielding properties when they have different mesh cell opening area ratios.

[0030] The top of the transparent absorption layer 6 is fixedly connected to the reflective layer 7, which is made of a double-layer micro-ring metal mesh material.

[0031] The double-layer micro-ring metal mesh material of reflective layer 7 can reflect unabsorbed electromagnetic waves, enhancing the overall shielding capability.

[0032] Among them, an antireflective film layer 8 is fixedly installed on the top of the reflective layer 7, and the antireflective film layer 8 is made of silicone resin.

[0033] The silicone resin material of the antireflective coating layer 8 can reduce light reflection and significantly improve the light transmittance of the entire structure.

[0034] The top of the antireflective coating layer 8 is fixedly connected to a protective layer 9, which is made of polyethylene naphthalate.

[0035] The polyethylene naphthalate material of protective layer 9 has scratch-resistant and corrosion-resistant properties, which can extend the service life of the metal mesh structure.

[0036] Working principle and usage process of this utility model:

[0037] The substrate 1 is made of polymethyl methacrylate (PMMA) and serves as the basic carrier of the entire metal mesh structure. It provides stable support for all functional layers, including the No. 1 mesh metal layer 2 and the No. 1 transparent dielectric layer 3. The No. 1 mesh metal layer 2 is made of nickel-copper alloy, and the No. 2 mesh metal layer 4 is made of copper. Both have good basic electrical conductivity and electromagnetic shielding properties. The No. 2 mesh metal layer 4 is set at a staggered angle to the No. 1 mesh metal layer 2. This design expands the range of electromagnetic waves and the metal mesh, allowing electromagnetic waves to fully contact the double-layer metal mesh during propagation. Compared with a single-layer metal mesh, it can intercept electromagnetic waves more efficiently. The No. 1 transparent dielectric layer 3 is made of acrylic UV resin, which can be specifically adjusted to adjust the electromagnetic and optical properties of the overall structure. It provides adaptation support for the shielding function of the double-layer metal mesh, ensuring that the performance of the double-layer metal mesh can better adapt to the application scenario requirements when performing its shielding function, and avoiding the shielding effect being affected by the performance mismatch between layers.

[0038] The transparent absorption layer 6 is made of graphene, which can be adapted to the light transmission and microwave shielding requirements of different scenarios by adjusting the opening area ratio of the mesh units. It can initially absorb incident electromagnetic waves and utilize the material properties of graphene to convert and dissipate some electromagnetic energy. The reflective layer 7 is made of double-layer micro-ring metal mesh, which can reflect residual electromagnetic waves that are not completely absorbed by the transparent absorption layer 6. The double-layer micro-ring structure design can expand the electromagnetic wave reflection coverage. The antireflection film layer 8 is made of silicone resin, and its core function is to reduce light reflection loss on the structural surface and between layers. When multiple layers such as the reflective layer 7 are stacked, light is easily reflected at the interlayer interfaces, affecting the light transmission effect. The antireflective film layer 8 made of silicone resin can alleviate this problem. Combined with the transparency of the graphene material in the transparent absorption layer 6, the obstruction of light transmission by the multi-layer structure is reduced. The protective layer 9 is made of polyethylene naphthalate, which has scratch-resistant and corrosion-resistant properties. The polyethylene naphthalate protective layer 9 covers the outermost layer and can directly resist the physical scratches and chemical corrosion of the internal functional layers from the outside, reduce the damage of environmental factors to the functional layers, and maintain the functional stability of each layer.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel metal mesh structure, comprising a substrate (1), characterized in that: A first grid metal layer (2) is fixedly installed at the top of the substrate (1). A first transparent medium layer (3) is fixedly connected to the top of the first grid metal layer (2). A second grid metal layer (4) is fixedly installed at the top of the first transparent medium layer (3). A second transparent medium layer (5) is fixedly connected to the top of the second grid metal layer (4). The substrate (1) is made of polymethyl methacrylate. The first grid metal layer (2) is made of nickel-copper alloy. The first transparent medium layer (3) is made of acrylic UV resin. The second grid metal layer (4) is made of copper. The second transparent medium layer (5) is made of polyimide resin.

2. The novel metal mesh structure according to claim 1, characterized in that: The substrate (1) is fixedly connected to the first grid metal layer (2) by a coating process, and the first grid metal layer (2) is fixedly connected to the first transparent dielectric layer (3) by a coating process.

3. The novel metal mesh structure according to claim 1, characterized in that: The first transparent dielectric layer (3) is fixedly connected to the second grid metal layer (4) by vapor deposition, and the second grid metal layer (4) is fixedly connected to the second transparent dielectric layer (5) by coating.

4. The novel metal mesh structure according to claim 1, characterized in that: A transparent absorption layer (6) is fixedly installed at the top of the second transparent medium layer (5), and the transparent absorption layer (6) is made of graphene.

5. A novel metal mesh structure according to claim 4, characterized in that: The top of the transparent absorption layer (6) is fixedly connected to a reflective layer (7), which is made of a double-layer micro-ring metal mesh material.

6. The novel metal mesh structure according to claim 5, characterized in that: An antireflective coating layer (8) is fixedly installed on the top of the reflective layer (7), and the antireflective coating layer (8) is made of silicone resin.

7. A novel metal mesh structure according to claim 6, characterized in that: The top of the antireflective film layer (8) is fixedly connected to a protective layer (9), which is made of polyethylene naphthalate.

Images