Antenna structure and payment device

Abstract

One or more embodiments of the present specification provide an antenna structure and a payment device. The antenna structure comprises a layer of flexible insulating film, winding wires are etched on the front face and the back face of the flexible insulating film respectively, the winding wires on the front face and the winding wires on the back face are correspondingly connected in series and conducted to form a wire for constructing an antenna coil, and the wire is wound by multiple circles from inside to outside or from outside to inside to form the antenna coil. In addition, a conductive element used for enhancing conductivity is additionally arranged on an end pin of the antenna coil.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the field of electronic payment technology, and more particularly, to an antenna structure and a payment device. Background Art

[0002] Near field communication (NFC) is a short-range, high-frequency radio technology that transmits or receives electromagnetic wave signals through the NFC antenna to achieve contactless identification and interconnection.

[0003] Payment devices based on NFC technology are relatively small and more portable. However, due to the relatively high cost of antennas, the promotion cost of payment devices has also increased, limiting their popularity. Utility Model Content

[0004] In order to reduce the application cost of payment scenarios based on near field communication, one or more embodiments of this specification provide an antenna structure and a payment device.

[0005] In a first aspect, one or more embodiments of the present specification provide an antenna structure, which includes: a flexible insulating film, a first winding is etched on the front side of the flexible insulating film, a second winding is etched on the back side of the flexible insulating film, the first winding and the second winding are connected in series to form a first conductive wire; the first conductive wire is wound around multiple times from the inside to the outside or from the outside to the inside to form a first antenna coil; a first conductive element is added to the end pin of the first antenna coil for connecting to an external main control board.

[0006] In one possible implementation, a third winding is etched on the front side of the flexible insulating film, and a fourth winding is etched on the back side of the flexible insulating film. The third winding and the fourth winding are connected in series to form a second conductive wire; the second conductive wire is wound around multiple times from the inside to the outside or from the outside to the inside to form a second antenna coil; a second conductive element is added to the end pin of the second antenna coil for connecting to the main control board; the second antenna coil is wound around the first antenna coil.

[0007] In a possible implementation, the first conductive element and the second conductive element are both carbon pastes screen-printed on corresponding end pins.

[0008] In a possible implementation, both the first conductive element and the second conductive element are connection terminals riveted to corresponding end pins.

[0009] In a possible implementation manner, both the first conductive element and the second conductive element are metal plating layers coated on corresponding end pins.

[0010] In a possible implementation, both the first conductive element and the second conductive element are aligned with the corresponding end pins and completely cover the corresponding end pins.

[0011] In a possible implementation, the first winding and the second winding are connected in series by riveting; the third winding and the fourth winding are connected in series by riveting.

[0012] In one possible implementation, the antenna structure also includes: a conductive spring sheet, the first connection end of the conductive spring sheet is used to connect to the end pin to which the first conductive element is added, the second connection end of the conductive spring sheet is used to connect to the end pin to which the second conductive element is added, and the third connection end of the conductive spring sheet is used to connect to the main control board.

[0013] In a possible implementation, an insulation reinforcement film is pasted on the back side of the end pin of the first antenna coil and the back side of the end pin of the second antenna coil.

[0014] In a second aspect, one or more embodiments of the present specification provide an antenna structure, which includes: a flexible insulating film, a first winding is etched on the front side of the flexible insulating film, a second winding is etched on the back side of the flexible insulating film, the first winding and the second winding are connected in series to form a first conductive wire; the first conductive wire is wound around multiple times from the inside to the outside or from the outside to the inside to form a first antenna coil; a tuning capacitor is connected in series on the first antenna coil near its end; the tuning capacitor is connected in series with the first antenna coil through conductive silver glue.

[0015] In a third aspect, one or more embodiments of this specification provide a payment device, which includes the antenna structure described in the first aspect or the second aspect.

[0016] In summary, the antenna structure provided in one or more embodiments of this specification, according to the encircling shape of the antenna coil, etches metal windings on the front and back of the flexible insulating film respectively, and connects them in series to form a wire for constructing the antenna coil. This greatly reduces the amount of metal used, effectively reduces the cost of the antenna, and applies it to payment devices, which can also greatly reduce the cost of the payment devices, making the payment devices easier to promote and apply, thereby enriching the user's payment experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of one or more embodiments of the present specification, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of one or more embodiments of the present specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A front schematic diagram of an antenna structure provided for one or more embodiments of this specification;

[0019] Figure 2 for Figure 1 A schematic diagram of the back side of the antenna structure shown;

[0020] Figure 3 A front view schematic diagram of another antenna structure provided for one or more embodiments of this specification;

[0021] Figure 4 for Figure 3 A schematic diagram of the back side of the antenna structure shown;

[0022] Figure 5 A schematic diagram of an application scenario provided for one or more embodiments of this specification. DETAILED DESCRIPTION

[0023] One or more embodiments of the present invention are further described in detail below through the accompanying drawings and examples. Through these descriptions, the features and advantages of one or more embodiments of the present invention will become clearer and more specific.

[0024] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0025] In addition, the technical features involved in different implementations of one or more embodiments of this specification described below can be combined with each other as long as they do not conflict with each other.

[0026] With the development of NFC technology, payment devices based on NFC technology have gradually entered people's lives. During the payment process, users only need to bring their mobile phones close to the payment device to quickly complete the payment, making payment more convenient. However, due to the relatively high antenna cost during the manufacturing process of payment devices based on NFC technology, the popularization of payment devices has brought greater cost pressure to service promoters, which has limited its popularity to a certain extent.

[0027] In order to reduce the promotion cost of payment devices based on NFC technology and increase the popularity of payment devices, one or more embodiments of this specification provide an antenna structure and a payment device to reduce the antenna cost and the payment device cost, making payment devices based on NFC technology easier to promote and popularize, thereby enriching users' payment methods, making users' payment experience more diverse and convenient, and improving users' payment experience.

[0028] Figure 1 A front schematic diagram of an antenna structure provided for one or more embodiments of this specification. Figure 2 for Figure 1 Schematic diagram of the back side of the antenna structure.

[0029] Combination Figure 1 and Figure 2 It can be seen that in an optional embodiment of the present specification, the antenna structure may include: a flexible insulating film 10. Exemplarily, the flexible insulating film 10 may be a polyethyleneterephthalate (PET) film. The PET film has good mechanical properties, good toughness, high tensile strength, and good durability. In addition, the PET film has good corrosion resistance and insulation properties. The embodiment of the present specification uses a PET film as a flexible insulating film for etching the antenna coil, which can improve the durability of the antenna and extend the service life of the antenna. It should be understood that the flexible insulating film 10 included in the antenna structure may also be a film of other flexible materials, and the embodiment of the present specification does not limit this.

[0030] A first winding 21 is etched on the front side of the flexible insulating film 10, and a second winding 22 is etched on the back side of the flexible insulating film 10. The first winding 21 and the second winding 22 are connected in series to form a first conductive wire. The first conductive wire is wound multiple times from inside to outside or from outside to inside in a plane parallel to the flexible insulating film 10 to form an antenna coil, which is recorded as the first antenna coil 20.

[0031] When manufacturing the antenna, a metal layer can be attached to the front and back of the flexible insulating film 10, for example, a layer of aluminum foil can be attached to the front and back of the flexible insulating film 10, and then, according to the shape of the first antenna coil 20, that is, according to the shape of multiple turns from the inside to the outside, or according to the shape of multiple turns from the outside to the inside, the first winding 21 is etched on the front of the flexible insulating film 10, and the second winding 22 is etched on the back of the flexible insulating film 10. Afterwards, the first winding 21 on the front of the flexible insulating film and the second winding 22 on the back of the flexible insulating film are connected in series to form a complete wire, which is recorded as the first wire. The coil formed by the first wire is the first antenna coil 20.

[0032] Optionally, the widths of the first winding 21 and the second winding 22 obtained by etching can be set according to the requirements of actual application scenarios. For example, the width of the first winding 21 can be 0.25 millimeters (mm).

[0033] Optionally, the first winding 21 may include a section of wire, or the first winding 21 may include multiple sections of wire. Similarly, the second winding 22 may include a section of wire, or the second winding 22 may include multiple sections of wire, which is not limited in the embodiments of this specification. It should be understood that all the wires included in the first winding 21 and all the wires included in the second winding 22 are all connected in series to form a first wire.

[0034] Optionally, a riveting method may be used to connect the first winding 21 on the front side of the flexible insulating film and the second winding 22 on the back side of the flexible insulating film in series. Figure 1 and Figure 2 As shown, the first winding 21 and the second winding 22 can be riveted and connected at the first riveting point 23 shown in the figure.

[0035] Optionally, the first wire obtained by connecting the first winding 21 and the second winding 22 in series can be wound in the shape of an arc, or in the shape of a rectangle, or in other irregular shapes. Based on this, the first antenna coil 20 can be formed by the first wire winding around a plurality of arc-shaped coils, or by the first wire winding around a plurality of rectangular coils, or by the first wire winding around a plurality of irregular-shaped coils, and this specification embodiment does not limit this.

[0036] Optionally, part of the wires near both ends of the first antenna coil 20, i.e., part of the wires near the start end of the loop and part of the wires near the end end of the loop, are extended to the outside of the looped part of the first antenna coil, as the end pins 24 of the first antenna coil, hereinafter referred to as the first end pins 24, for connecting to an external main control board. For example, the antenna structure can be used as an NFC antenna and applied to a payment device, wherein the first end pins 24 can be used to connect to the main control board of the payment device, so that the payment device can communicate with the external device through the antenna structure and perform payment based on NFC technology.

[0037] Optionally, the portion of the wire extending to the outside of the surrounding part on the first antenna coil 20 may be located in the same plane as the coil of the surrounding part. Optionally, in order to facilitate the application of the antenna structure to a smaller device, the portion of the wire extending to the outside of the surrounding part on the first antenna coil 20 may also have an angle with the plane where the coil of the surrounding part is located, and the size of the angle depends on the requirements of the application scenario. The embodiments of this specification are not limited to this.

[0038] Since metal layers, such as aluminum foil, are easily oxidized, the connection between the antenna structure and the main control board is affected, thereby affecting the communication efficiency of the device. In order to protect the first end pin 24 of the antenna structure from oxidation and enhance the conductivity of the first end pin 24, in the antenna structure provided in the embodiment of this specification, a first conductive element (not shown in the figure) is added to the first end pin 24 of the first antenna coil 20. In this way, the first conductive element can protect the first end pin 24 of the first antenna coil 20 from being oxidized. The first end pin 24 with the first conductive element added has better conductivity when connected to the main control board.

[0039] Optionally, the first conductive element may be a carbon paste screen-printed on the first end pin 24 of the first antenna coil 20. That is, the carbon paste may be screen-printed on the first end pin 24 of the first antenna coil 20 by screen printing. Since the carbon paste has a strong adhesion to the etched aluminum foil after baking during screen printing of the carbon paste, the first end pin 24 of the first antenna coil 20 has good conductivity and corrosion resistance, and the performance is greatly improved. It should be understood that other conductive materials may also be screen-printed on the first end pin 24 of the first antenna coil 20, for example, silver paste may also be screen-printed on the first end pin 24 of the first antenna coil 20, and the embodiments of this specification are not limited to this.

[0040] Optionally, the first conductive element may also be a terminal riveted to the first end pin 24 of the first antenna coil 20. That is, the terminal may be riveted to the first end pin 24 of the first antenna coil 20 by riveting, and the first end pin 24 of the first antenna coil 20 may be covered by the terminal, which may also prevent the first end pin 24 of the first antenna coil 20 from being oxidized and corroded, thereby improving the conductivity of the first end pin 24 of the first antenna coil 20.

[0041] Optionally, the first conductive element may also be a metal plating layer coated on the first end pin 24 of the first antenna coil 20. That is, a layer of metal may also be plated on the first end pin 24 of the first antenna coil 20, for example, nickel or gold may be plated on the first end pin 24 of the first antenna coil 20. In this way, the first end pin 24 of the first antenna coil 20 may be prevented from being oxidized and corroded, thereby improving the conductivity of the first end pin 24 of the first antenna coil 20. It should be understood that other metals may also be plated on the first end pin 24 of the first antenna coil 20, and the embodiments of this specification are not limited thereto.

[0042] Optionally, when the first conductive element is added to the first end pin 24 of the first antenna coil 20, the added first conductive element is aligned with the first end pin 24 of the first antenna coil 20, and the coverage of the first conductive element is larger than the range of the first end pin 24 of the first antenna coil 20. It should be understood that the coverage of the first conductive element only needs to be slightly larger than the range of the first end pin 24 of the first antenna coil 20. In this way, the first conductive element can completely cover the first end pin 24 of the first antenna coil 20 so that it will not be corroded, and will not exceed the range of the first end pin 24 of the first antenna coil 20 too much, thereby avoiding the problem of large deviation and affecting the conductive performance.

[0043] Optionally, since the materials of the flexible insulating film 10 and the first antenna coil 20 obtained by etching are relatively soft, even if a first conductive element is added to the first end pin 24 of the first antenna coil 20, the first end pin 24 is still relatively soft, making it inconvenient to connect the first end pin 24 of the first antenna coil 20 to the external main control board. In order to enhance the convenience of antenna connection, an insulating reinforcement film can also be attached to the back of the first end pin 24 of the first antenna coil 20 to enhance the hardness and strength of the first end pin 24 of the first antenna coil 20, making it more convenient to connect the antenna structure to the external main control board.

[0044] Optionally, the insulation enhancement film may be a polyimide (PI) film or a PET film. It should be understood that the insulation enhancement film may also be other insulation films, which is not limited in the embodiments of this specification.

[0045] Optionally, the shape of the flexible insulating film 10 used to etch the first antenna coil 20 can be set according to the shape of the first antenna coil 20. That is, the shape of the flexible insulating film 10 matches and corresponds to the shape of the first antenna coil 20. It should be understood that the area of ​​the flexible insulating film 10 is larger than the area occupied by the first antenna coil 20, so that the first antenna coil 20 can be completely etched on the flexible insulating film 10. For example, Figure 1 and 2 As shown, if the first antenna coil 20 is formed by a plurality of arc-shaped coils, the flexible insulating film 10 may be a hollow insulating film in the shape of a ring. It should be understood that the flexible insulating film 10 also includes an extended portion insulating film for etching the extended portion conductive wire, and the first end pin 24 of the first antenna coil 20 is etched on the extended portion insulating film.

[0046] In combination with the above content, it can be known that the antenna structure provided in the embodiment of this specification can be used as an NFC antenna in a payment device. Optionally, in order to meet the miniaturization requirements of the payment device, the angle between the part of the wire extending to the outside of the surrounding part in the antenna structure and the plane where the coil of the surrounding part is located can be set to 90 degrees, and then the end pin of the first conductive element added to the antenna structure is connected to the main control board of the payment device. In this way, the payment device can control the communication between the payment device and the external device through the main control board to perform payment based on NFC technology.

[0047] The above antenna structure provided in the embodiment of this specification is etched with metal windings on the front and back of the flexible insulating film according to the surrounding shape of the antenna coil (first antenna coil), and connected in series to form a wire for constructing the antenna coil. The amount of metal used is greatly reduced, which effectively reduces the cost of the antenna. Subsequent application of it in payment devices can also greatly reduce the cost of the payment device. In addition, in the above antenna structure of the embodiment of this specification, a conductive element (first conductive element) is added to the end pin of the antenna coil, which not only protects the end pin from oxidation corrosion, but also improves the conductivity of the end pin, prolongs the service life of the end pin, and has better applicability.

[0048] In one or more embodiments of this specification, the antenna structure may also include multiple antenna coils. The following description takes two antenna coils as an example. Based on the same inventive concept, one or more embodiments of this specification also provide another antenna structure, see Figure 3 and Figure 4 , Figure 3 A front view schematic diagram of another antenna structure provided for one or more embodiments of this specification. Figure 4 for Figure 3 Schematic diagram of the back side of the antenna structure.

[0049] Combination Figure 3 and Figure 4 It can be seen that in the antenna structure provided in the embodiment of this specification, the front side of the flexible insulating film 10 may be etched with the third winding 31 in addition to the first winding 21. The back side of the flexible insulating film 10 may be etched with the fourth winding 32 in addition to the second winding 22.

[0050] The first winding 21 and the second winding 22 are connected in series to form a first conductive wire. The first conductive wire is connected in a plane parallel to the flexible insulating film 10, and is wound multiple times from the inside to the outside or from the outside to the inside to form an antenna coil, which is recorded as the first antenna coil 20. The third winding 31 and the fourth winding 32 are connected in series to form a second conductive wire. The second conductive wire is connected in the same plane as the first conductive wire, and is wound multiple times from the inside to the outside or from the outside to the inside to form an antenna coil, which is recorded as the second antenna coil 30.

[0051] The first antenna coil 20 and the second antenna coil 30 are wound together. Figure 3 As shown, the second antenna coil 30 may be wrapped around the inside of the first antenna coil 20. It should be understood that the second antenna coil may also be wrapped around the outside of the first antenna coil, and this embodiment of the specification is not limited to this.

[0052] When manufacturing the antenna, a metal layer may be attached to the front and back of the flexible insulating film 10, for example, a layer of aluminum foil may be attached to the front and back of the flexible insulating film 10. Then, according to the shape of the first antenna coil 20 and the shape of the second antenna coil 30, that is, according to the shape of multiple turns from the inside to the outside, or according to the shape of multiple turns from the outside to the inside, the first winding 21 and the third winding 31 are etched on the front of the flexible insulating film 10, and the second winding 22 and the fourth winding 32 are etched on the back of the flexible insulating film 10. Afterwards, the first winding 21 on the front of the flexible insulating film and the second winding 22 on the back of the flexible insulating film are connected in series to form a complete wire, which is recorded as the first wire. The third winding 31 on the front of the flexible insulating film and the fourth winding 32 on the back of the flexible insulating film are connected in series to form a complete wire, which is recorded as the second wire. The coil formed by the first wire is the first antenna coil 20. The coil formed by the second wire is the second antenna coil 30.

[0053] Optionally, the first winding 21 may include a section of wire, or the first winding 21 may include multiple sections of wire. Similarly, the second winding 22 may include a section of wire, or the second winding 22 may include multiple sections of wire, which is not limited in the embodiments of this specification. It should be understood that all the wires included in the first winding 21 and all the wires included in the second winding 22 are all connected in series to form a first wire.

[0054] Similarly, the third winding 31 and the fourth winding 32 may also include a section of wire. Alternatively, the third winding 31 and the fourth winding 32 may also include multiple sections of wire, which is not limited in the embodiments of this specification. It should be understood that all the wires included in the third winding 31 and the fourth winding 32 are all connected in series to form a second wire.

[0055] Optionally, a riveting method may be used to connect the first winding 21 on the front side of the flexible insulating film and the second winding 22 on the back side of the flexible insulating film in series. Figure 3 and Figure 4 As shown, the first winding 21 and the second winding 22 can be riveted and connected at the first riveting point 23 shown in the figure. Similarly, the third winding 31 on the front side of the flexible insulating film and the fourth winding 32 on the back side of the flexible insulating film can be connected in series by riveting. Figure 3 and Figure 4 As shown, the third winding 31 and the fourth winding 32 can be riveted and connected at the second riveting point 33 shown in the figure.

[0056] Optionally, the first wire obtained by connecting the first winding 21 and the second winding 22 in series can be wound in the shape of an arc, or in the shape of a rectangle, or in other irregular shapes. Based on this, the first antenna coil 20 can be formed by the first wire winding around a plurality of arc-shaped coils, or by the first wire winding around a plurality of rectangular coils, or by the first wire winding around a plurality of irregular-shaped coils, and this specification embodiment does not limit this.

[0057] Similarly, the second wire obtained by connecting the third winding 31 and the fourth winding 32 in series can also be wound in the shape of an arc, or in the shape of a rectangle, or in other irregular shapes. Based on this, the second antenna coil 30 can be formed by the second wire winding around a plurality of arc-shaped coils, or by the second wire winding around a plurality of rectangular coils, or by the second wire winding around a plurality of irregular-shaped coils, and this specification embodiment does not limit this.

[0058] Optionally, part of the wires near both ends of the first antenna coil 20, i.e., part of the wires near the start end of the first antenna coil 20 and part of the wires near the end end of the first antenna coil 20, are extended to the outside of the middle part of the first antenna coil as first end pins 24 of the first antenna coil 20, for connecting to an external main control board. Similarly, part of the wires near both ends of the second antenna coil 30, i.e., part of the wires near the start end of the second antenna coil 30 and part of the wires near the end end of the second antenna coil 30, are extended to the outside of the middle part of the second antenna coil as end pins 34 of the second antenna coil 30, hereinafter referred to as second end pins 34, for connecting to an external main control board.

[0059] Optionally, the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 may extend in the same direction.

[0060] Optionally, the portion of the conductive wire on the first antenna coil 20 extending outside the surrounding portion may be located in the same plane as the coil of the surrounding portion. Similarly, the portion of the conductive wire on the second antenna coil 30 extending outside the surrounding portion may also be located in the same plane as the coil of the surrounding portion.

[0061] Optionally, in order to facilitate the application of the antenna structure in a smaller device, the portion of the wire on the first antenna coil 20 extending to the outside of the surrounding part may also have an angle with the plane where the coil of the surrounding part is located, and the size of the angle depends on the requirements of the application scenario. The embodiments of this specification are not limited to this. Similarly, the portion of the wire on the second antenna coil 30 extending to the outside of the surrounding part may also have an angle with the plane where the coil of the surrounding part is located, and the size of the angle may also be set according to the requirements of the application scenario.

[0062] In order to protect the end pins from oxidation and enhance the conductivity of the end pins, in the antenna structure provided in the embodiment of this specification, a first conductive element (not shown in the figure) is added to the first end pin 24 of the first antenna coil 20. A second conductive element (not shown in the figure) is added to the second end pin 34 of the second antenna coil 30. In this way, the first conductive element can protect the first end pin 24 of the first antenna coil 20 from being oxidized. The first end pin 24 with the first conductive element has better conductivity when connected to the main control board. Similarly, the second conductive element can protect the second end pin 34 of the second antenna coil 30 from being oxidized. The second end pin 34 with the second conductive element has better conductivity when connected to the main control board.

[0063] Optionally, the first conductive element may be a carbon paste screen-printed on the first end pin 24 of the first antenna coil 20. The second conductive element may be a carbon paste screen-printed on the second end pin 34 of the second antenna coil 30. That is, the carbon paste may be screen-printed on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 by screen printing. Since the carbon paste has a strong adhesion to the etched aluminum foil after baking during screen printing of the carbon paste, the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 have good conductivity and corrosion resistance, and the performance is greatly improved. It should be understood that other conductive materials may also be screen-printed on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30. For example, silver paste may also be screen-printed on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30, and the embodiments of this specification are not limited to this.

[0064] Optionally, the first conductive element may also be a terminal riveted to the first end pin 24 of the first antenna coil 20. The second conductive element may also be a terminal riveted to the second end pin 34 of the second antenna coil 30. That is, the terminal may be riveted to the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 by riveting, and the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 may be covered by the terminal, which may also prevent the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 from being oxidized and corroded, thereby improving the conductivity of the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30.

[0065] Optionally, the first conductive element may also be a metal plating layer coated on the first end pin 24 of the first antenna coil 20. The second conductive element may also be a metal plating layer coated on the second end pin 34 of the second antenna coil 30. That is, a layer of metal may also be plated on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30. For example, nickel or gold may be plated on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30. In this way, the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 may be prevented from being oxidized and corroded, thereby improving the conductivity of the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30. It should be understood that other metals may also be plated on the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30, and the embodiments of this specification are not limited thereto.

[0066] Optionally, when the first conductive element is added to the first end pin 24 of the first antenna coil 20, the added first conductive element is aligned with the first end pin 24 of the first antenna coil 20, and the coverage of the first conductive element is larger than the range of the first end pin 24 of the first antenna coil 20. It should be understood that the coverage of the first conductive element only needs to be slightly larger than the range of the first end pin 24 of the first antenna coil 20. In this way, the first conductive element can completely cover the first end pin 24 of the first antenna coil 20 so that it will not be corroded, and will not exceed the range of the first end pin 24 of the first antenna coil 20 too much, thereby avoiding the problem of large deviation and affecting the conductive performance.

[0067] Similarly, when a second conductive element is added to the second end pin 34 of the second antenna coil 30, the added second conductive element is aligned with the second end pin 34 of the second antenna coil 30, and the coverage of the second conductive element is larger than the range of the second end pin 34 of the second antenna coil 30. It should be understood that the coverage of the second conductive element only needs to be slightly larger than the range of the second end pin 34 of the second antenna coil 30. In this way, the second conductive element can completely cover the second end pin 34 of the second antenna coil 30 so that it will not be corroded, and will not exceed the range of the second end pin 34 of the second antenna coil 30 too much, thereby avoiding the problem of large deviation and affecting the conductive performance.

[0068] Optionally, since the materials of the flexible insulating film 10 and the first antenna coil 20 and the second antenna coil 30 obtained by etching are relatively soft, even if a first conductive element is added to the first end pin 24 of the first antenna coil 20 and a second conductive element is added to the second end pin 34 of the second antenna coil 30, the first end pin 24 and the second end pin 34 are still relatively soft, making it inconvenient to connect the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 to the external main control board. In order to enhance the convenience of antenna connection, an insulating reinforcement film can also be pasted on the back of the first end pin 24 of the first antenna coil 20 and the back of the second end pin 34 of the second antenna coil 30 to enhance the hardness and strength of the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30, so as to facilitate the connection of the antenna structure with the external main control board.

[0069] Optionally, the insulation enhancement film may be a polyimide (PI) film or a PET film. It should be understood that the insulation enhancement film may also be other insulation films, which is not limited in the embodiments of this specification.

[0070] Optionally, the shape of the flexible insulating film 10 used for etching the first antenna coil 20 and the second antenna coil 30 can be set according to the shape of the first antenna coil 20 and the second antenna coil 30. That is, the shape of the flexible insulating film 10 matches and corresponds to the shape of the first antenna coil 20 and the second antenna coil 30. It should be understood that the area of ​​the flexible insulating film 10 is larger than the area occupied by the first antenna coil 20 and the second antenna coil 30, so that the first antenna coil 20 and the second antenna coil 30 can be completely etched on the flexible insulating film 10. For example, as Figure 3 and Figure 4As shown, if the first antenna coil 20 and the second antenna coil 30 are both formed by a plurality of arc-shaped coils, the flexible insulating film 10 may be a circular insulating film. It should be understood that the flexible insulating film 10 also includes an extended portion insulating film for etching the extended portion conductive wire, and the first end pin 24 of the first antenna coil 20 and the second end pin 34 of the second antenna coil 30 are both etched on the extended portion insulating film.

[0071] Optionally, the antenna structure provided in the embodiment of this specification may further include a conductive spring (not shown in the figure). The first connection end of the conductive spring is used to connect the end pin to which the first conductive element is added, that is, the first connection end of the conductive spring is used to connect the first end pin 24 to which the first conductive element is added, the second connection end of the conductive spring is used to connect the end pin to which the second conductive element is added, that is, the second connection end of the conductive spring is used to connect the second end pin 34 to which the second conductive element is added, and the third connection end of the conductive spring is used to connect to an external main control board. For example, the antenna structure provided in the embodiment of this specification can be applied to a payment device, and the third connection end of the conductive spring is used to connect to the main control board of the payment device.

[0072] When the antenna structure provided in the embodiment of this specification is applied to a payment device, the antenna structure can be used as an NFC antenna. In an optional embodiment of this specification, the payment device can control the connection or disconnection with the first end pin 24 of the first antenna coil 20 through its main control board. Similarly, the payment device can also control the connection or disconnection with the second end pin 34 of the second antenna coil 30 through its main control board.

[0073] For example, it is assumed that the antenna structure includes only the first antenna coil 20 and the second antenna coil 30, and the second antenna coil 30 surrounds the inside of the first antenna coil 20. Figure 5 As shown, the angles between the partial wire and the extending insulating film of the first antenna coil extending to the outside of the surrounding part, and the partial wire and the extending insulating film of the second antenna coil extending to the outside of the surrounding part, and the plane where the surrounding part coil is located, can be set to 90 degrees, and then the extending insulating film is pasted on the inner wall of the shell of the payment device, and the conductive spring is fixed inside the shell of the payment device, and the third connection end of the conductive spring is connected to the main control board of the payment device.

[0074] When the payment device detects that there is an external power supply or an internal battery, it can control the first connection end of the conductive spring to be connected to the first end pin with the first conductive element through the main control board, and at the same time, disconnect the second connection end of the conductive spring from the second end pin with the second conductive element. The payment device then communicates with the external device through the first antenna coil, thereby performing payment based on NFC technology.

[0075] When the payment device detects that both the external power supply and the internal battery are not supplying power, the main control board can be used to control the second connection end of the conductive spring to be connected to the second end pin of the added second conductive element, and at the same time, the connection between the first connection end of the conductive spring and the first end pin of the added first conductive element is disconnected. The second antenna coil can then be used as an NFC tag, and the external device can read the information in the NFC tag, thereby performing payment based on NFC technology.

[0076] The above antenna structure provided in the embodiment of this specification is etched with metal windings on the front and back of the flexible insulating film according to the encircling shape of the antenna coil (the first antenna coil and the second antenna coil), and connected in series to form a conductor for constructing the antenna coil. This not only greatly reduces the cost of the payment device and promotes the popularization and application of the payment device, but also can be applied to the payment device. When the payment device is powered or not powered, the two antenna coils are switched on to ensure the communication of the payment device based on NFC technology, thereby improving the communication efficiency of the payment device and making it more applicable.

[0077] Based on the same inventive concept, one or more embodiments of the present specification also provide another antenna structure, which may include: a flexible insulating film, illustratively, the flexible insulating film may be a PET film. A first winding is etched on the front of the flexible insulating film, and a second winding is etched on the back of the flexible insulating film. The first winding and the second winding are connected in series to form a first conductor. The first conductor is in a plane parallel to the flexible insulating film, and is wound multiple times from the inside to the outside or from the outside to the inside to form an antenna coil, which is recorded as the first antenna coil.

[0078] The specific formation method of the first antenna coil can refer to the content of the above embodiment, which will not be repeated here. Figure 1 and Figure 2 .

[0079] Optionally, the partial conductors near the two ends of the first antenna coil, that is, the partial conductors near the wrapping start end and the partial conductors near the wrapping end end, are extended to the outside of the wrapping portion in the first antenna coil. The partial conductors extending to the outside of the wrapping portion and the coil of the wrapping portion may be located in the same plane, or the partial conductors extending to the outside of the wrapping portion and the plane where the coil of the wrapping portion is located may also have an angle, which is not limited in the embodiments of this specification.

[0080] Optionally, a tuning capacitor may be connected in series near the end of the portion of the wire extending outside the surrounding portion. In this way, the antenna structure may be used as a tuning antenna for tuning the frequencies of other antennas. For example, the antenna structure may be applied to a payment device, and the antenna structure may be placed near an antenna that needs to be tuned, so that the frequency of the antenna that needs to be tuned can be adjusted.

[0081] Optionally, the tuning capacitor can be connected in series with the end of the first antenna coil by conductive silver glue. When the antenna is specifically arranged, the tuning capacitor can be bonded to the end of the first antenna coil by conductive silver glue, and the conductive silver glue, the first antenna coil and the tuning capacitor can be bonded together by hot pressing, so that the connection between the three is more secure.

[0082] The above-mentioned antenna structure provided in the embodiments of this specification can be used as a tuning antenna to tune other antennas in the device. Moreover, since the antenna structure greatly reduces the amount of metal used, the cost of the antenna is effectively reduced. Subsequently, its application in payment devices can also greatly reduce the cost of the payment devices, thereby promoting the promotion and application of payment devices and enriching the user's payment experience.

[0083] Based on the same inventive concept, one or more embodiments of this specification further provide a payment device. The payment device may include the antenna structure provided by any of the aforementioned embodiments.

[0084] For example, an antenna structure including only the first antenna coil and the end pin of the first antenna coil (or the end pin with the first conductive element added) used to connect to an external main control board can be used as an NFC antenna in a payment device. When used specifically, the end pin of the first antenna coil (or the end pin with the first conductive element added) can be connected to the main control board of the payment device. When powered by an external power supply or an internal battery, the payment device can make NFC-based payments with external devices through the antenna structure.

[0085] Exemplarily, the antenna structure including the first antenna coil and the second antenna coil can also be applied to the payment device. When used specifically, when the payment device detects that there is an external power supply or an internal battery power supply, the main control board can control the first connection end of the conductive spring to connect and conduct with the end pin with the first conductive element, and at the same time, disconnect the second connection end of the conductive spring from the end pin with the second conductive element, so that the payment device can communicate with the external device through the first antenna coil, thereby performing payment based on NFC technology.

[0086] When the payment device detects that both the external power supply and the internal battery are not supplying power, the main control board can be used to control the second connection end of the conductive spring to be connected to the end pin to which the second conductive element is added, and at the same time, the connection between the first connection end of the conductive spring and the end pin to which the first conductive element is added is disconnected. The second antenna coil can then be used as an NFC tag, and the external device can read the information in the NFC tag, thereby performing NFC-based payment with the payment device.

[0087] Exemplarily, an antenna structure including only the first antenna coil and a tuning capacitor connected in series at the end of the first antenna coil may also be applied to a payment device, and the antenna structure may be used to tune other antennas in the payment device, such as an NFC antenna.

[0088] Optionally, when any antenna structure is applied to a payment device, the antenna structure may be pasted inside a housing of the payment device. For specific methods, reference may be made to the contents of the aforementioned embodiments, which will not be described in detail here.

[0089] The payment device provided in the embodiments of this specification uses a lower-cost antenna structure, so that the cost of the payment device itself is also greatly reduced, and it is easier to promote and use, and has better applicability.

[0090] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiment of the payment device, since it is basically similar to the embodiment of the antenna structure mentioned above, the description is relatively simple, and the relevant parts can be referred to the partial description of the embodiment of the antenna structure.

[0091] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. For those of ordinary skill in the art, the specific meaning of the above terms in one or more embodiments of this specification can be understood according to the specific circumstances.

[0092] It should be noted that, in the absence of conflict, one or more embodiments of this specification and the features in the embodiments may be combined with each other. One or more embodiments of this specification are not limited to any single aspect, nor to any single embodiment, nor to any combination and / or replacement of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of one or more embodiments of this specification may be used alone or in combination with one or more other aspects and / or embodiments thereof.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of one or more embodiments of this specification, rather than to limit them. Although one or more embodiments of this specification are described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of one or more embodiments of this specification, and they should all be included in the scope of one or more embodiments of this specification.

[0094] One or more embodiments of this specification are described above in conjunction with optional implementation methods, but these implementation methods are only exemplary and serve only as an illustration. On this basis, multiple replacements and improvements can be made to one or more embodiments of this specification, all of which fall within the scope of protection of one or more embodiments of this specification.

Claims

1. An antenna structure, characterized in that: include: A flexible insulating film, wherein a first winding is etched on the front side of the flexible insulating film, and a second winding is etched on the back side of the flexible insulating film, wherein the first winding and the second winding are connected in series to form a first conductive wire; The first conducting wire is wound multiple times from inside to outside or from outside to inside to form a first antenna coil; A first conductive element is provided on the end pin of the first antenna coil for connecting to an external main control board.

2. The antenna structure according to claim 1, characterized in that: A third winding is also etched on the front side of the flexible insulating film, and a fourth winding is also etched on the back side of the flexible insulating film. The third winding and the fourth winding are connected in series to form a second conductive wire; the second conductive wire is wound around multiple times from the inside to the outside or from the outside to the inside to form a second antenna coil; a second conductive element is added to the end pin of the second antenna coil for connecting to the main control board; the second antenna coil is wound around the first antenna coil.

3. The antenna structure according to claim 2, characterized in that: The first conductive element and the second conductive element are both carbon pastes screen-printed on corresponding end pins.

4. The antenna structure according to claim 2, characterized in that: The first conductive element and the second conductive element are both connection terminals riveted to corresponding end pins.

5. The antenna structure according to claim 2, characterized in that: The first conductive element and the second conductive element are both metal plating layers coated on corresponding end pins.

6. The antenna structure according to any one of claims 2 to 5, characterized in that: The first conductive element and the second conductive element are both aligned with the corresponding end pins and completely cover the corresponding end pins.

7. The antenna structure according to any one of claims 2 to 5, characterized in that: The first winding and the second winding are connected in series by riveting; the third winding and the fourth winding are connected in series by riveting.

8. The antenna structure according to any one of claims 2 to 5, characterized in that: The antenna structure also includes: a conductive spring, the first connection end of the conductive spring is used to connect to the end pin of the first conductive element, the second connection end of the conductive spring is used to connect to the end pin of the second conductive element, and the third connection end of the conductive spring is used to connect to the main control board.

9. The antenna structure according to any one of claims 2 to 5, characterized in that: An insulation reinforcement film is pasted on the back surface of the end pin of the first antenna coil and the back surface of the end pin of the second antenna coil.

10. An antenna structure, characterized in that: include: A flexible insulating film, wherein a first winding is etched on the front side of the flexible insulating film, and a second winding is etched on the back side of the flexible insulating film, wherein the first winding and the second winding are connected in series to form a first conductive wire; The first conducting wire is wound multiple times from inside to outside or from outside to inside to form a first antenna coil; A tuning capacitor is connected in series to the first antenna coil near its end; The tuning capacitor is connected in series with the first antenna coil through conductive silver glue.

11. A payment device, characterized in that: The payment device comprises the antenna structure described in any one of claims 1 to 9 or claim 10.

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