Transparent electromagnetic shielding film
By employing an alternating design of two layers of conductive metal mesh in the transparent electromagnetic shielding film, the contradiction between shielding effectiveness and transparency is resolved, achieving a highly efficient electromagnetic shielding effect under high transparency, and enhancing the mechanical strength of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-03-13
AI Technical Summary
Existing transparent electromagnetic shielding films present a contradiction between shielding effectiveness and transparency; high-transparency shielding films have insufficient shielding effectiveness, while films with high shielding effectiveness have low transparency.
The design employs an alternating distribution of two layers of conductive metal mesh to create a more uniform and complete electromagnetic shielding effect. A transparent electromagnetic shielding film is sandwiched between the two layers of glass to form a sandwich structure that enhances mechanical strength.
It improves the shielding effectiveness of the shielding film while maintaining high transparency, and enhances the mechanical strength and durability of the overall structure.
Smart Images
Figure CN223993831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electromagnetic shielding films, specifically a transparent electromagnetic shielding film. Background Technology
[0002] With the rapid development of electromagnetic wave technology, the application of electromagnetic wave bands is constantly expanding, and the transmission power is greatly enhanced, leading to an increasingly complex space electromagnetic environment. This complex environment can easily cause problems such as network intersections, communication identification misalignments, and equipment malfunctions. In these fields, people need to obtain information through glass windows or driver's windows. To prevent interference from external electromagnetic radiation and leakage of internal electromagnetic signals, measures need to be taken to solve the electromagnetic shielding problem of viewing glass windows.
[0003] Existing transparent electromagnetic shielding films exhibit a mutually restrictive relationship between shielding effectiveness and transparency. High-transparency shielding films often have insufficient shielding effectiveness, while films with high shielding effectiveness have lower transparency. Utility Model Content
[0004] The purpose of this invention is to provide a transparent electromagnetic shielding film to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a transparent electromagnetic shielding film, comprising a transparent electromagnetic shielding film, wherein a second glass is disposed at the top of the transparent electromagnetic shielding film, a first glass is disposed at the bottom of the transparent electromagnetic shielding film, a second transparent adhesive is disposed between the transparent electromagnetic shielding film and the second glass, and a first transparent adhesive is disposed between the transparent electromagnetic shielding film and the first glass. The transparent electromagnetic shielding film comprises a transparent substrate and a metal conductive mesh, wherein the metal conductive mesh is directly formed on the transparent substrate.
[0006] Preferably, the metal conductive mesh includes a first metal conductive mesh and a second metal conductive mesh, a first conductive line is provided between two adjacent first metal conductive meshes, and a second conductive line is fixedly connected between two adjacent second metal conductive meshes. The metal conductive mesh is composed of upper and lower layers of first metal conductive mesh and second metal conductive mesh bonded together.
[0007] Preferably, a first solid copper grounding area is provided on the outer side of the first metal conductive mesh, and a second solid copper grounding area is provided on the outer side of the second metal conductive mesh.
[0008] Preferably, the first and second metal conductive meshes are staggered to form an overall shield.
[0009] Preferably, the transparent substrate includes PET, COP, or CPI transparent substrates, and the thickness of the transparent substrate includes 50-100 μm.
[0010] Preferably, the conductive metal mesh is made of a conductive metal material, and the thickness of the conductive metal layer is no more than 5 μm.
[0011] Preferably, the transparent electromagnetic shielding film is made by meshing a metal conductive film and obtaining it through a subtractive etching process.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention employs an alternating design of two layers of conductive metal mesh to create a more uniform and complete electromagnetic shielding effect, effectively improving the shielding efficiency of the shielding film and solving the problem of insufficient shielding efficiency of high-transparency shielding films. Furthermore, by sandwiching the transparent electromagnetic shielding film between two layers of glass to form a sandwich structure, the mechanical strength and durability of the overall structure are enhanced. Attached Figure Description
[0014] Figure 1 This is a side view of the glass window structure after the electromagnetic shielding film is installed according to this utility model.
[0015] Figure 2 This is a superimposed diagram of the transparent electromagnetic shielding film of this utility model.
[0016] Figure 3 This is a front view of the first metal conductive mesh of this utility model.
[0017] Figure 4 This is a front view of the second metallic conductive mesh of this utility model.
[0018] In the figure: First glass 1; Transparent electromagnetic shielding film 2; First transparent adhesive 3; Second transparent adhesive 4; Second glass 5; Transparent substrate 21; Metal conductive mesh 22; First solid copper grounding area 61; First metal conductive mesh 71; First conductive line 72; Second solid copper grounding area 62; Second metal conductive mesh 73; Second conductive line 74. Detailed Implementation
[0019] 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.
[0020] Please see Figures 1 to 4This utility model provides a technical solution: a transparent electromagnetic shielding film, including a transparent electromagnetic shielding film 2, a second glass 5 disposed on the top of the transparent electromagnetic shielding film 2, a first glass 1 disposed on the bottom of the transparent electromagnetic shielding film 2, a second transparent adhesive 4 disposed between the transparent electromagnetic shielding film 2 and the second glass 5, and a first transparent adhesive 3 disposed between the transparent electromagnetic shielding film 2 and the first glass 1. The transparent electromagnetic shielding film 3 and the transparent adhesive are bonded together. The transparent adhesive is a commonly used adhesive for laminated glass, including but not limited to PVB film. The transparent electromagnetic shielding film 2 and the glass are bonded together to form a sandwich structure.
[0021] The transparent electromagnetic shielding film 2 includes a transparent substrate 21 and a metal conductive mesh 22. The metal conductive mesh 22 is directly formed on the transparent substrate 21. The transparent substrate 21 includes PET, COP, and CPI transparent substrates, and the thickness of the transparent substrate 21 includes 50-100um. The metal conductive mesh 22 is a conductive metal material, and the thickness of the conductive metal layer is not greater than 5um. The transparent electromagnetic shielding film 2 is obtained by meshing the metal conductive film through etching subtraction.
[0022] The metal conductive mesh 22 includes a first metal conductive mesh 71 and a second metal conductive mesh 73. A first conductive line 72 is fixedly connected between two adjacent first metal conductive meshes 71, and a second conductive line 74 is fixedly connected between two adjacent second metal conductive meshes 73. A first solid copper grounding area 61 is fixedly connected to the outside of the first metal conductive mesh 71, and a second solid copper grounding area 62 is fixedly connected to the outside of the second metal conductive mesh 73. Both the first solid copper grounding area 61 and the second solid copper grounding area 62 provide external connection points to facilitate connection with external circuits and realize electrical connection between the shielding film and the equipment housing or other shielding components.
[0023] The metal conductive mesh 22 is composed of two layers of first metal conductive mesh 71 and second metal conductive mesh 73 bonded together. The first metal conductive mesh 71 and the second metal conductive mesh 73 are staggered to form an overall shield. Through the staggered distribution of the upper and lower meshes, a more uniform and complete electromagnetic shielding effect is formed.
[0024] In summary, this utility model, by adopting an interlaced design of two layers of conductive metal mesh, forms a more uniform and complete electromagnetic shielding effect, effectively improving the shielding efficiency of the shielding film and solving the problem of insufficient shielding efficiency of high-transparency shielding films. Furthermore, by sandwiching the transparent electromagnetic shielding film 2 between two layers of glass to form a sandwich structure, the mechanical strength and durability of the overall structure are enhanced.
[0025] 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 transparent electromagnetic shielding film comprising a transparent electromagnetic shielding film (2), characterized in that: The top of the transparent electromagnetic shielding film (2) is provided with a second glass (5), the bottom of the transparent electromagnetic shielding film (2) is provided with a first glass (1), a second transparent adhesive (4) is arranged between the transparent electromagnetic shielding film (2) and the second glass (5), a first transparent adhesive (3) is arranged between the transparent electromagnetic shielding film (2) and the first glass (1), the transparent electromagnetic shielding film (2) comprises a transparent substrate (21) and a metal conductive grid (22), and the metal conductive grid (22) is directly formed on the transparent substrate (21).
2. The transparent electromagnetic shielding film according to claim 1, characterized in that: The metal conductive grid (22) comprises a first metal conductive grid (71) and a second metal conductive grid (73), a first conductive wire (72) is arranged between two adjacent first metal conductive grids (71), and a second conductive wire (74) is fixedly connected between two adjacent second metal conductive grids (73); the metal conductive grid (22) is composed of two layers of first metal conductive grids (71) and second metal conductive grids (73) bonded together.
3. The transparent electromagnetic shielding film according to claim 2, wherein: The outer side of the first metal conductive grid (71) is provided with a first copper contact area (61), and the outer side of the second metal conductive grid (73) is provided with a second copper contact area (62).
4. The transparent electromagnetic shielding film according to claim 2, wherein: The first metal conductive grid (71) and the second metal conductive grid (73) are staggered and distributed to form an overall shielding.
5. The transparent electromagnetic shielding film according to claim 1, wherein: The transparent substrate (21) comprises a PET, COP, CPI transparent substrate, and the thickness of the transparent substrate (21) is 50-100um.
6. The transparent electromagnetic shielding film according to claim 1, wherein: The metal conductive grid (22) is a conductive metal material, and the thickness of the conductive metal layer is not greater than 5um.
7. The transparent electromagnetic shielding film according to claim 1, wherein: The transparent electromagnetic shielding film (2) is obtained by griding a metal conductive film and etching subtraction.