A metal-structured card device integrating near-field communication

Abstract

This utility model discloses a metal-structured card device integrating near-field communication (NFC) technology. It includes a first metal plate unit and a second metal plate unit bonded together. An ultra-thin NFC module is embedded within the interface area between the first and second metal plate units. The NFC module includes a thin substrate, an antenna etched onto the substrate, a chip body, and an absorbing material for interference suppression. The absorbing material is fixed to the substrate by an adhesive. This utility model embeds an ultra-thin NFC module between the first and second metal plate units, enabling near-field communication for the metal card, overcoming the metal shielding effect, and improving signal stability and sensitivity. The ultra-thin design ensures mechanical strength without increasing thickness, the etched antenna enhances signal transmission accuracy, and the absorbing material reduces metal interference and improves communication reliability. The absorbing material is fixed by the adhesive, ensuring stability, simplifying the manufacturing process, and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of NFC card technology, and more specifically to a metal-structured card device that integrates near-field communication. Background Technology

[0002] Near Field Communication (NFC) is a short-range wireless communication technology widely used in mobile payments, identity verification, access control systems, and smart cards. NFC relies on electromagnetic induction coupling, allowing electronic devices to establish secure and reliable communication connections within a short distance, enabling data exchange. Compared to traditional contact-based or long-range wireless communication methods, NFC offers advantages such as low power consumption, rapid pairing, and high security, thus gaining widespread adoption in modern intelligent applications.

[0003] Currently, most NFC cards on the market use non-metallic substrates, such as PVC, PET, or paper, to ensure stable NFC signal transmission. However, with the increasing demand for high-end smart cards, metal cards are gradually gaining market favor due to their superior physical strength, durability, and premium feel. However, because metal materials shield electromagnetic signals, traditional NFC cards struggle to function properly in metallic environments, experiencing severe NFC signal attenuation or even complete data transmission failure. Therefore, effectively integrating NFC functionality into metal cards has become a key technological breakthrough for the industry.

[0004] In existing technologies, some solutions mitigate the shielding effect of metal by adding a non-metallic window to the surface of the metal card or by adding a dielectric layer inside the card. For example, a multi-layered structure design is used, embedding an NFC chip inside a plastic layer to achieve a certain level of near-field communication functionality. However, this approach still has some shortcomings, such as:

[0005] 1. Complex structure and high manufacturing cost: It requires the addition of non-metallic layers or the opening of windows, which complicates the manufacturing process and affects the cost control of mass production.

[0006] 2. Affects aesthetics and mechanical strength: Creating non-metallic areas on the surface of a metal card may affect the overall appearance and reduce the card's mechanical strength, weakening its premium feel and durability. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a metal-structured card device that integrates near-field communication to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A metal-structured card device integrating near-field communication includes a first metal plate unit and a second metal plate unit that are bonded together. An ultra-thin NFC module is embedded in the interface area between the first metal plate unit and the second metal plate unit. The NFC module includes a thin substrate, an antenna etched on the substrate, a chip body, and a wave-absorbing material for anti-interference. The wave-absorbing material is fixed to the substrate by an adhesive material.

[0010] By optimizing the NFC module structure, integrating absorbing materials, and adopting an ultra-thin design, the transmission performance of NFC signals is effectively improved while ensuring the durability of the metal cards, achieving stable and reliable data interaction and meeting application requirements.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] This invention achieves near-field communication (NFC) functionality within a metal card by embedding an ultra-thin NFC module between a first and second metal plate unit. This overcomes the shielding effect of metal materials on NFC signals, improving signal transmission stability and sensitivity. The ultra-thin design of the NFC module ensures mechanical strength without significantly increasing card thickness, guaranteeing a good user experience and portability. The internal antenna employs an etching process to ensure signal transmission accuracy and consistency. Furthermore, the addition of absorbing material further optimizes the NFC signal's anti-interference capability, reducing signal loss due to metal reflection and electromagnetic interference, thereby improving data communication reliability. The absorbing material is fixed to the substrate using adhesive, ensuring component stability, simplifying the manufacturing process, improving production efficiency, and reducing manufacturing costs. This design balances the high efficiency of NFC communication, the structural strength of metal cards, and the feasibility of mass production, making it widely applicable in fields such as smart access control, financial payments, and identity authentication. Attached Figure Description

[0013] Figure 1 This is a first view structural schematic diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the second view structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the upper and lower structures of the NFC module of this utility model;

[0016] Figure 4 This is a top view of the NFC module of this utility model.

[0017] The attached figures are labeled as follows: 1, NFC module; 11, chip body; 12, antenna; 13, absorbing material; 14, adhesive material; 15, glassine release paper; 16, identification area; 21, first metal plate unit; 22, second metal plate unit; 221, via. Detailed Implementation

[0018] 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.

[0019] Refer to the instruction manual appendix Figure 1-3 This utility model provides a metal-structured card device that integrates near-field communication. The device integrates NFC functionality on the basis of metal material, ensuring the high strength and durability of the metal card while also having convenient wireless communication capabilities.

[0020] Preferably, in one embodiment, the adhesive material 14 is a hot melt adhesive.

[0021] A metal-structured card device integrating near-field communication (NFC) includes a first metal plate unit 21 and a second metal plate unit 22 bonded together, forming the basic structure of the card. An ultra-thin NFC module 1 is embedded within the interface area between the first and second metal plate units 21 and 22, allowing the card to support NFC functionality without significantly increasing its thickness. The NFC module 1 features an ultra-thin design, including a thin substrate on which an antenna 12 is etched. To effectively reduce the shielding effect of the metal material on the NFC signal, an anti-interference absorbing material 13 is incorporated into the NFC module. The absorbing material 13 is firmly fixed to the substrate by an adhesive material 14, making the entire NFC module structure compact and stable. The bottom of the NFC module 1 is a glassine release paper 15.

[0022] Because the NFC module 1 adopts an ultra-thin design, its thickness can reach 0.15mm in one specific embodiment, making its installation in the metal card structure more flexible. In this case, there is no need to open an additional mounting slot inside the metal card structure; instead, the NFC module 1 can be directly clamped and fixed between the first metal plate unit 21 and the second metal plate unit 22, thereby further optimizing the structural strength and manufacturing process of the card and avoiding the problem of reduced mechanical strength caused by slotting. In addition, this design method can simplify the production process, reduce processing costs, and ensure stable transmission of NFC signals, improving the overall performance and user experience of the card.

[0023] like Figure 4 As shown, this utility model further optimizes the design of the metal-structured card device. During the NFC manufacturing process, an identification area 16 is provided on the card surface. This identification area can be used to mark the product's status, such as good, defective, or other relevant information, facilitating rapid identification and classification during production, testing, logistics, and use. This identification area can employ laser engraving, screen printing, inkjet coding, or other marking methods to ensure the clarity and durability of the information. Furthermore, the design of this identification area can be combined with the data storage function of the NFC module, enabling the identification information to provide a more comprehensive product traceability and management method through a combination of physical imprints and electronic data, thereby improving product traceability and management efficiency.

[0024] The technical effects and advantages of this utility model are as follows:

[0025] This invention, by embedding an ultra-thin NFC module between the first and second metal plate units, enables metal cards to possess near-field communication (NFC) functionality. This successfully solves the problem of metal materials shielding NFC signals, effectively improving signal stability and transmission efficiency. The NFC module employs an ultra-thin design, maintaining the overall strength of the card without significantly increasing its thickness, ensuring a convenient and comfortable user experience. The internal antenna utilizes a precision etching process to improve signal transmission accuracy and stability, while the addition of absorbing material further enhances anti-interference capabilities, reducing signal attenuation caused by metal reflection and electromagnetic interference, ensuring communication reliability. Furthermore, the absorbing material is firmly fixed to the substrate using adhesive materials, making the component more stable, simplifying the manufacturing process, improving manufacturing efficiency, and reducing costs. Overall, this structure achieves a good balance between NFC communication performance, the mechanical strength of the metal card, and production feasibility, and can be widely applied in various fields such as smart access control, mobile payment, and identity authentication, providing a superior technical solution for high-end smart cards.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A metal-structured card device integrating near-field communication, characterized in that: The system includes a first metal plate unit (21) and a second metal plate unit (22) that are bonded together. An ultra-thin NFC module (1) is embedded in the interface area between the first metal plate unit (21) and the second metal plate unit (22). The NFC module (1) includes a thin substrate, an antenna (12) etched on the substrate, a chip body (11), and a wave-absorbing material (13) for anti-interference. The wave-absorbing material is fixed to the substrate by an adhesive material (14).

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