CN110137679B - NFC antenna device and manufacturing method thereof - Google Patents
NFC antenna device and manufacturing method thereof Download PDFInfo
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- CN110137679B CN110137679B CN201910393480.5A CN201910393480A CN110137679B CN 110137679 B CN110137679 B CN 110137679B CN 201910393480 A CN201910393480 A CN 201910393480A CN 110137679 B CN110137679 B CN 110137679B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 2
- 239000002390 adhesive tape Substances 0.000 claims 1
- 239000013039 cover film Substances 0.000 claims 1
- 239000010408 film Substances 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 14
- 239000005020 polyethylene terephthalate Substances 0.000 description 14
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- -1 Polyethylene terephthalate Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
本发明公开了一种NFC天线及其制造方法，属于天线技术领域。该装置包括依次叠层设置的铁氧体层、线圈组件和FPC组件，线圈组件包括PET基材层和设置在基材层上的铝线圈，铝线圈的两端设置有线圈触点。FPC组件包括双面FPC板和设置在FPC板上的两条连接导线，两条连接导线的两端分别设置有与铝线圈相连的内接触点和与外部电路相连的外接触点，FPC板的结构的主体为以两个所述内接触点为对角线点的方形结构。本发明减小了FPC板的尺寸，并且线圈层的材料为铝线圈，使得NFC天线装置的生产成本降低。
The present invention discloses an NFC antenna and a manufacturing method thereof, and belongs to the field of antenna technology. The device includes a ferrite layer, a coil assembly and an FPC assembly which are stacked in sequence, the coil assembly includes a PET substrate layer and an aluminum coil arranged on the substrate layer, and coil contacts are arranged at both ends of the aluminum coil. The FPC assembly includes a double-sided FPC board and two connecting wires arranged on the FPC board, and the two ends of the two connecting wires are respectively provided with an inner contact point connected to the aluminum coil and an outer contact point connected to an external circuit, and the main body of the structure of the FPC board is a square structure with two inner contact points as diagonal points. The present invention reduces the size of the FPC board, and the material of the coil layer is an aluminum coil, so that the production cost of the NFC antenna device is reduced.
Description
技术领域Technical Field
本发明涉及天线技术领域，具体为一种NFC天线及其制造方法。The present invention relates to the technical field of antennas, and in particular to an NFC antenna and a manufacturing method thereof.
背景技术Background technique
传统的NFC(Near Field Communication，近距离无线通信)天线通常为铁氧体层和双面FPC板(Flexible Printed Circuit Board，柔性线路板)相粘接，其中双面FPC板在双面基材上蚀刻形成线圈图案后双面压合绝缘覆盖膜组成，所用的双面FPC板的尺寸较大，几乎与铁氧体层的尺寸相等，且线圈层采用的是铜或银材质的线圈，导致生产成本较高。Traditional NFC (Near Field Communication) antennas are usually composed of a ferrite layer and a double-sided FPC board (Flexible Printed Circuit Board) bonded together. The double-sided FPC board is made by etching a coil pattern on a double-sided substrate and then laminating an insulating covering film on both sides. The double-sided FPC board used is relatively large, almost equal to the size of the ferrite layer, and the coil layer uses a copper or silver coil, resulting in a high production cost.
发明内容Summary of the invention
有鉴于此，本发明的目的是解决现有的技术问题，提供一种成本较低、结构优化的NFC天线及其制造方法。In view of this, an object of the present invention is to solve the existing technical problems and provide a NFC antenna with low cost and optimized structure and a manufacturing method thereof.
为实现上述目的，本发明一方面提供一种NFC天线，包括从下至上依次叠层设置的铁氧体层、线圈组件和FPC组件，所述的线圈组件包括基材层和设置在所述基材层上的铝线圈，所述铝线圈的两端设置有线圈触点，所述铁氧体层与所述基材层的未设置有所述铝线圈的一侧粘接；所述FPC组件包括FPC板和设置在FPC板上的两条连接导线，所述FPC板为双面FPC板，两条所述连接导线的两端分别设置有与所述铝线圈相连的内接触点和与外部电路相连的外接触点，所述内接触点与所述线圈触点相连接，所述FPC板在设置有两条连接导线的外层贴有绝缘覆盖膜。To achieve the above-mentioned object, the present invention provides an NFC antenna on one hand, comprising a ferrite layer, a coil assembly and an FPC assembly stacked in sequence from bottom to top, wherein the coil assembly comprises a substrate layer and an aluminum coil arranged on the substrate layer, coil contacts are arranged at both ends of the aluminum coil, and the ferrite layer is bonded to a side of the substrate layer where the aluminum coil is not arranged; the FPC assembly comprises an FPC board and two connecting wires arranged on the FPC board, the FPC board is a double-sided FPC board, and inner contact points connected to the aluminum coil and outer contact points connected to an external circuit are respectively arranged at both ends of the two connecting wires, the inner contact points are connected to the coil contacts, and an insulating covering film is affixed to the outer layer of the FPC board where the two connecting wires are arranged.
进一步地，所述铝线圈在所述基材层上以边长逐渐缩小的方形螺旋状设置。Furthermore, the aluminum coil is arranged on the substrate layer in a square spiral shape with gradually decreasing side lengths.
进一步地，所述铝线圈两端的线圈触点位于靠近所述基材层的同一角处。Furthermore, the coil contacts at both ends of the aluminum coil are located at the same corner close to the substrate layer.
进一步地，所述FPC板的主体结构为以两个所述内接触点为对角线点的方形结构。Furthermore, the main structure of the FPC board is a square structure with the two inner contact points as diagonal points.
进一步地，所述FPC板的主体的方形结构的一角与所述线圈触点所在的所述基材层的角对齐，所述FPC板的主体的方形结构的边长小于所述基材层的短边长度的二分之一。Furthermore, one corner of the square structure of the main body of the FPC board is aligned with the corner of the substrate layer where the coil contact is located, and the side length of the square structure of the main body of the FPC board is less than half of the short side length of the substrate layer.
进一步地，所述基材层的材质为PET(Polyethylene terephthalate，聚对苯二甲酸类塑料)。Furthermore, the material of the substrate layer is PET (Polyethylene terephthalate, polyethylene terephthalate plastic).
进一步地，所述内接触点与所述线圈触点之间还涂有导电胶水。Furthermore, conductive glue is applied between the inner contact point and the coil contact point.
另一方面，本发明还提供一种NFC天线的制造方法，包括以下步骤：On the other hand, the present invention also provides a method for manufacturing an NFC antenna, comprising the following steps:
A1：准备一PET板作为基材层，在所述PET板上蚀刻边长逐渐减小的方形螺旋状的铝线圈，在所述铝线圈的两端设置有线圈触点；A1: Prepare a PET plate as a substrate layer, etch a square spiral aluminum coil with gradually decreasing side length on the PET plate, and set coil contacts at both ends of the aluminum coil;
A2：制作双面FPC板，在所述FPC板的同一面上蚀刻两条连接导线，两条所述连接导线的两端分别设置有与所述铝线圈相连的内接触点和与外部电路相连的外接触点，在所述FPC板的蚀刻有两条连接导线的外侧贴有绝缘覆盖膜，并通过压合的方式与所述FPC板连接；A2: A double-sided FPC board is made, two connecting wires are etched on the same side of the FPC board, and both ends of the two connecting wires are respectively provided with an inner contact point connected to the aluminum coil and an outer contact point connected to the external circuit, and an insulating covering film is attached to the outer side of the FPC board where the two connecting wires are etched, and connected to the FPC board by pressing;
A3：在所述铝线圈上的所述线圈触点与所述FPC板上的内接触点之间涂覆导电胶水，将步骤A1形成的所述PET板带有所述铝线圈的一侧与步骤A2形成的所述FPC板带有所述内接触点的一侧，在一定的温度条件下进行压合，并且使所述FPC板上的所述内接触点与所述铝线圈上的所述线圈触点连接；A3: Coating conductive glue between the coil contact on the aluminum coil and the inner contact point on the FPC board, pressing the side of the PET board with the aluminum coil formed in step A1 and the side of the FPC board with the inner contact point formed in step A2 under certain temperature conditions, and connecting the inner contact point on the FPC board with the coil contact on the aluminum coil;
A4：在步骤A3完成后形成的所述PET板的远离所述铝线圈的一侧贴铁氧体，所述铁氧体与所述PET板之间通过双面胶粘接。A4: After step A3, a ferrite is attached to the side of the PET plate away from the aluminum coil, and the ferrite is bonded to the PET plate by double-sided tape.
进一步地，在步骤A1中所述铝线圈的线宽为0.6-1.3mm，线间距为0.5-1.0mm。Furthermore, in step A1, the line width of the aluminum coil is 0.6-1.3 mm, and the line spacing is 0.5-1.0 mm.
进一步地，在步骤A3中所述的温度条件为80-120度。Furthermore, the temperature condition in step A3 is 80-120 degrees.
由于采用上述技术方案，本发明达到如下的技术效果：By adopting the above technical solution, the present invention achieves the following technical effects:
本发明的NFC天线所使用的FPC板的结构为以两个所述内接触点为对角线点的方形结构，FPC板的主体的方形结构的边长小于所述基材层的短边长度的二分之一，使FPC板的尺寸明显小于基材层的尺寸，并且线圈层的材料为铝线圈，使得NFC天线装置的生产成本降低。The structure of the FPC board used in the NFC antenna of the present invention is a square structure with the two inner contact points as diagonal points. The side length of the square structure of the main body of the FPC board is less than half of the short side length of the substrate layer, so that the size of the FPC board is significantly smaller than the size of the substrate layer, and the material of the coil layer is an aluminum coil, so that the production cost of the NFC antenna device is reduced.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
附图1为NFC天线的结构爆炸示意图。Figure 1 is a schematic diagram of the structural explosion of the NFC antenna.
附图2为FPC组件的结构示意图。Figure 2 is a schematic structural diagram of the FPC assembly.
附图3为NFC天线的主视图。FIG3 is a front view of the NFC antenna.
附图中：1-铁氧体层，2-线圈组件，21-基材层，22-铝线圈，23-线圈触点，3-FPC组件，31-FPC板，32-连接导线，33-内接触点，34-外接触点，35-绝缘覆盖膜，4-双面胶。In the accompanying drawings: 1-ferrite layer, 2-coil assembly, 21-substrate layer, 22-aluminum coil, 23-coil contact, 3-FPC assembly, 31-FPC board, 32-connecting wire, 33-inner contact point, 34-outer contact point, 35-insulating covering film, 4-double-sided tape.
具体实施方式Detailed ways
下面结合附图对本发明的实施例作进一步描述。The embodiments of the present invention are further described below in conjunction with the accompanying drawings.
参见图1-3所示，一方面提供一种NFC天线，包括从下至上依次叠层设置的铁氧体层1、线圈组件2和FPC组件3。线圈组件2包括基材层21和设置在基材层21上的铝线圈22，铝线圈22在基材层21上以边长逐渐缩小的方形螺旋状设置。铝线圈22的两端设置有线圈触点23，两个线圈触点23位于靠近基材层21的同一角处。As shown in Figures 1-3, on the one hand, an NFC antenna is provided, including a ferrite layer 1, a coil component 2, and an FPC component 3 stacked in sequence from bottom to top. The coil component 2 includes a substrate layer 21 and an aluminum coil 22 disposed on the substrate layer 21, and the aluminum coil 22 is disposed on the substrate layer 21 in a square spiral shape with a gradually decreasing side length. Coil contacts 23 are disposed at both ends of the aluminum coil 22, and the two coil contacts 23 are located at the same corner close to the substrate layer 21.
本实施例中，基材层21的材质为PET，铁氧体层1为铁氧体，铁氧体层1与基材层21的未设置有铝线圈22的一侧粘接。In this embodiment, the material of the base layer 21 is PET, the ferrite layer 1 is ferrite, and the ferrite layer 1 is bonded to the side of the base layer 21 where the aluminum coil 22 is not provided.
FPC组件3包括FPC板31和设置在FPC板31上的两条连接导线32，两条连接导线32的两端分别设置有与所述铝线圈22相连的内接触点33和与外部电路相连的外接触点34。FPC板31为双面FPC板31，FPC板31的主体结构为方形结构，方形结构的边长小于基材层的短边长度的二分之一，内接触点33设置在FPC板31的主体的方形结构的一对角处，在FPC板31的主体的方形结构的上部还有一突出部分，用于设置外接触点34。FPC板31的主体的方形结构的一角与线圈触点23所在的基材层21的角对齐。内接触点33与线圈触点23之间涂有导电胶水(图中未示)，FPC板31在设置有两条连接导线32的外层贴有绝缘覆盖膜35。The FPC assembly 3 includes an FPC board 31 and two connecting wires 32 arranged on the FPC board 31. The two ends of the two connecting wires 32 are respectively provided with an inner contact point 33 connected to the aluminum coil 22 and an outer contact point 34 connected to the external circuit. The FPC board 31 is a double-sided FPC board 31. The main structure of the FPC board 31 is a square structure. The side length of the square structure is less than half of the short side length of the substrate layer. The inner contact points 33 are arranged at a pair of corners of the square structure of the main body of the FPC board 31. There is also a protruding portion on the upper part of the square structure of the main body of the FPC board 31 for setting the outer contact points 34. One corner of the square structure of the main body of the FPC board 31 is aligned with the corner of the substrate layer 21 where the coil contact 23 is located. Conductive glue (not shown in the figure) is applied between the inner contact point 33 and the coil contact 23. The outer layer of the FPC board 31 where the two connecting wires 32 are arranged is affixed with an insulating covering film 35.
参见图1-3所示，本实施例还提供一种NFC天线的制造方法，包括以下步骤：Referring to FIGS. 1-3 , this embodiment further provides a method for manufacturing an NFC antenna, comprising the following steps:
A1：准备一PET板作为基材层21，在PET板上蚀刻边长逐渐减小的方形螺旋状的铝线圈22，铝线圈22的线宽为0.6-1.3mm，线间距为0.5-1.0mm，在铝线圈22的两端设置有线圈触点23。A1: Prepare a PET plate as a substrate layer 21, and etch a square spiral aluminum coil 22 with gradually decreasing side length on the PET plate. The line width of the aluminum coil 22 is 0.6-1.3 mm, the line spacing is 0.5-1.0 mm, and coil contacts 23 are set at both ends of the aluminum coil 22.
A2：制作双面FPC板，在FPC板31的同一面上蚀刻两条连接导线32，两条连接导线32的两端分别设置有与铝线圈22相连的内接触点33和与外部电路相连的外接触点34，在FPC板31的蚀刻有两条连接导线32的外侧贴有绝缘覆盖膜35，并通过压合的方式与FPC板31连接。A2: Make a double-sided FPC board, etch two connecting wires 32 on the same side of the FPC board 31, and provide internal contact points 33 connected to the aluminum coil 22 and external contact points 34 connected to the external circuit at both ends of the two connecting wires 32. An insulating covering film 35 is attached to the outer side of the FPC board 31 where the two connecting wires 32 are etched, and connected to the FPC board 31 by pressing.
A3：在铝线圈22上的线圈触点23与FPC板31上的内接触点33之间涂覆导电胶水(图中未示)，将步骤A1形成的PET板带有铝线圈22的一侧与步骤A2形成的FPC板31带有内接触点33的一侧，在80-120度的温度条件下进行压合，并且使FPC板31上的内接触点33与铝线圈22上的线圈触点23连接。A3: Apply conductive glue (not shown) between the coil contact 23 on the aluminum coil 22 and the internal contact point 33 on the FPC board 31, and press the side of the PET board with the aluminum coil 22 formed in step A1 and the side of the FPC board 31 with the internal contact point 33 formed in step A2 under a temperature condition of 80-120 degrees, and connect the internal contact point 33 on the FPC board 31 with the coil contact 23 on the aluminum coil 22.
A4：在步骤A3完成后形成的PET板的远离铝线圈22的一侧贴铁氧体，铁氧体与PET板之间通过双面胶4粘接。A4: After step A3, a ferrite is attached to the side of the PET plate that is formed away from the aluminum coil 22, and the ferrite and the PET plate are bonded by a double-sided tape 4.
尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
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|---|---|---|---|---|
| KR101444905B1 (en) * | 2014-01-13 | 2014-09-26 | 일신전자 주식회사 | Antenna for near field communication |
| CN105490009A (en) * | 2016-02-03 | 2016-04-13 | 深圳市信维通信股份有限公司 | Orthogonal winding type patch NFC antenna and antenna system |
| CN105826664A (en) * | 2015-09-07 | 2016-08-03 | 维沃移动通信有限公司 | Method for making antenna and antenna structure |
| CN106252827A (en) * | 2016-09-19 | 2016-12-21 | 武汉天喻聚联网络有限公司 | A kind of modified form radio-frequency antenna and production technology thereof |
| CN208423179U (en) * | 2018-06-21 | 2019-01-22 | 深圳市信维通信股份有限公司 | A kind of NFC antenna structure |
| CN209981458U (en) * | 2019-05-13 | 2020-01-21 | 湖南韩顺电子科技有限公司 | NFC antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9912058B2 (en) * | 2014-10-21 | 2018-03-06 | Infineon Technologies Ag | Hybrid antenna, antenna arrangement and method for manufacturing an antenna arrangement |
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| KR101444905B1 (en) * | 2014-01-13 | 2014-09-26 | 일신전자 주식회사 | Antenna for near field communication |
| CN105826664A (en) * | 2015-09-07 | 2016-08-03 | 维沃移动通信有限公司 | Method for making antenna and antenna structure |
| CN105490009A (en) * | 2016-02-03 | 2016-04-13 | 深圳市信维通信股份有限公司 | Orthogonal winding type patch NFC antenna and antenna system |
| CN106252827A (en) * | 2016-09-19 | 2016-12-21 | 武汉天喻聚联网络有限公司 | A kind of modified form radio-frequency antenna and production technology thereof |
| CN208423179U (en) * | 2018-06-21 | 2019-01-22 | 深圳市信维通信股份有限公司 | A kind of NFC antenna structure |
| CN209981458U (en) * | 2019-05-13 | 2020-01-21 | 湖南韩顺电子科技有限公司 | NFC antenna |
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| CN110137679A (en) | 2019-08-16 |
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Effective date of registration: 20250311 Address after: 516000 East Gate of Danshui, Huiyang District, Huizhou City, Guangdong Province Patentee after: HUIZHOU KEDINUO ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 415500, 3rd Floor, Building B1, Innovation and Entrepreneurship Park, Shangfu Neighborhood Committee, Lidan Street Office, Li County, Changde City, Hunan Province Patentee before: Hunan Hanshun Electronic Technology Co.,Ltd. Country or region before: China |