Electronic device

Abstract

The application discloses an electronic device, comprising: a main circuit board, the main circuit board is provided with a ground feeding cooperation part and a power feeding cooperation part; a support, arranged on one side surface of the main circuit board, the support comprises a support body and a conductive part, the conductive part is embedded in the support body, the conductive part comprises a connecting part, a first cooperation end and a second cooperation end, the first cooperation end and the second cooperation end are oppositely and spaced apart to form a gap, the connecting part and the first cooperation end are both exposed to the support body, and the first cooperation end is electrically connected with the ground feeding cooperation part; a flexible circuit board, arranged on the support, the flexible circuit board comprises a first trigger part and a second trigger part, the first trigger part is electrically connected with the power feeding cooperation part, and the second trigger part is electrically connected with the connecting part; wherein the main circuit board, the support and the flexible circuit board constitute an NFC antenna of the electronic device.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and specifically relates to an electronic device. Background Technology

[0002] The NFC (Near Field Communication) function on electronic devices makes daily use more convenient for users and can be used for scenarios such as public transport cards, mobile payments, access control cards, and meal cards.

[0003] In related technologies, to save internal space in electronic devices, a portion of the metal frame at one end (such as the top) is often used as an NFC antenna. However, because the NFC antenna is located at the top of the metal frame, the NFC reader is only sensitive when in contact with the top of the electronic device. This results in a small equivalent swiping area for the entire NFC antenna, leading to poor performance of the NFC antenna in the electronic device. Summary of the Invention

[0004] This application aims to provide an electronic device that at least solves one of the problems in the related technology: small equivalent card swiping area of ​​NFC antenna, short card reading distance, and poor performance of NFC antenna in mobile phones.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose an electronic device, comprising: a main circuit board having a grounding mating portion and a power supply mating portion; a bracket disposed on one side surface of the main circuit board, the bracket including a frame and a conductive component, the conductive component being embedded in the frame, the conductive component including a connecting portion, a first mating end and a second mating end, the first mating end and the second mating end being spaced apart to form a notch, the connecting portion and the first mating end both being exposed outside the frame, the first mating end being electrically connected to the grounding mating portion; and a flexible circuit board disposed on the bracket, the flexible circuit board including a first trigger portion and a second trigger portion, the first trigger portion being electrically connected to the power supply mating portion, and the second trigger portion being electrically connected to the connecting portion; wherein, the main circuit board, the bracket and the flexible circuit board constitute the NFC antenna of the electronic device.

[0007] In embodiments of this application, the electronic device includes a main circuit board, a support, and a flexible circuit board. The main circuit board, the support, and the flexible circuit board constitute the NFC antenna of the electronic device.

[0008] The support includes a frame and conductive components, with the conductive components embedded in the frame. The conductive components include a connecting portion, a first mating end, and a second mating end, both of which are exposed outside the frame. The first and second mating ends are positioned opposite each other and spaced apart to form a notch; that is, the first and second mating ends are disconnected, forming a notch. It is understood that the frame has an opening through which the connecting portion and the first mating end are exposed on the outer surface of the frame.

[0009] The main circuit board has a grounding mating part and a power supply mating part. A flexible circuit board is mounted on the frame and includes a first trigger part and a second trigger part. The first trigger part is electrically connected to the power supply mating part, and the second trigger part is electrically connected to the connecting part. The first mating end is electrically connected to the grounding mating part.

[0010] In this way, the current signal can be transmitted from the main circuit board to the flexible circuit board, then from the flexible circuit board to the conductive parts of the bracket, and then from the conductive parts to the main circuit board, forming a closed-loop ring current, which provides structural support for the effective operation of the NFC antenna.

[0011] This application defines the cooperative structure of the main circuit board, the bracket, and the flexible circuit board, making reasonable use of the existing structure of the bracket so that the bracket, the flexible circuit board, and the main board circuit all become part of the NFC antenna. This arrangement increases the effective radiation area of ​​the NFC antenna, effectively increasing the card reading area of ​​the NFC antenna and thus improving the performance of the NFC antenna.

[0012] In addition, the bracket forms part of the NFC antenna, reusing the bracket as a component of the NFC antenna. This helps to reduce the amount of flexible circuit board used while ensuring the performance of the NFC antenna, thereby reducing the production cost of the NFC antenna.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of a conductive element according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the structure of a bracket according to an embodiment of this application;

[0017] Figure 3This is a first-view structural schematic diagram of a flexible circuit board according to an embodiment of this application;

[0018] Figure 4 This is a second-view structural schematic diagram of a flexible circuit board according to an embodiment of this application;

[0019] Figure 5 This is a partial structural diagram of an NFC antenna according to one embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the structure of an NFC antenna according to an embodiment of this application;

[0021] Figure 7 This is a partial structural schematic diagram of an electronic device from a first-view perspective according to an embodiment of this application;

[0022] Figure 8 This is a partial structural schematic diagram of an electronic device from a second perspective, according to an embodiment of this application.

[0023] Figure 9 This is a partial structural schematic diagram of an electronic device from a third-view perspective, according to an embodiment of this application.

[0024] Figure 10 This is an exploded view of a partial structure of an electronic device according to an embodiment of this application;

[0025] Figure 11 This is a schematic diagram of the structure of a flexible circuit board and conductive components according to an embodiment of this application;

[0026] Figure 12 This is a schematic diagram of the magnetic induction region of an NFC antenna according to an embodiment of this application.

[0027] Figure label:

[0028] Figures 1 to 12 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0029] 10 NFC antenna, 100 bracket, 110 frame, 112 opening, 114 mounting slot, 116 clearance opening, 120 conductive component, 121 connecting part, 122 first mating end, 123 body segment, 124 outer segment, 125 inner segment, 126 hollow area, 127 second mating end, 128 notch, 200 flexible circuit board, 210 first trigger part, 220 second trigger part, 230 flexible body, 400 positioning post, 500 positioning hole, 20 magnetic induction area, 30 main circuit board, 310 grounding mating part, 320 power supply mating part, 40 electronic device. Detailed Implementation

[0030] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0031] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The following is combined Figures 1 to 12 An electronic device 40 according to an embodiment of this application is described.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, an electronic device 40 according to some embodiments of this application includes: a main circuit board 30, the main circuit board 30 having a grounding mating portion 310 and a power supply mating portion 320; a bracket 100, disposed on one side surface of the main circuit board 30, the bracket 100 including a frame 110 and a conductive member 120, the conductive member 120 being embedded in the frame 110, the conductive member 120 including a connecting portion 121, a first mating end 122 and a second mating end 127, the first mating end 122 and the second mating end 127 being provided with a notch 1 at a relative interval. 28. Both the connecting part 121 and the first mating end 122 are exposed on the frame 110. The first mating end 122 is electrically connected to the grounding mating part 310. The flexible circuit board 200 is disposed on the bracket 100. The flexible circuit board 200 includes a first trigger part 210 and a second trigger part 220. The first trigger part 210 is electrically connected to the power supply mating part 320, and the second trigger part 220 is electrically connected to the connecting part 121. The main circuit board 30, the bracket 100 and the flexible circuit board 200 constitute the NFC antenna 10 of the electronic device 40.

[0036] An electronic device 40 according to an embodiment of this application includes a main circuit board 30, a support 100, and a flexible circuit board 200. The main circuit board 30, the support 100, and the flexible circuit board 200 constitute the NFC antenna 10 of the electronic device 40.

[0037] The bracket 100 includes a frame 110 and a conductive element 120, with the conductive element 120 embedded in the frame 110. The conductive element 120 includes a connecting portion 121, a first mating end 122, and a second mating end 127, both of which are exposed outside the frame 110. The first mating end 122 and the second mating end 127 are positioned opposite each other and spaced apart to form a notch 128; that is, the first mating end 122 and the second mating end 127 are disconnected, forming the notch 128. It is understood that the frame 110 has an opening 112 through which the connecting portion 121 and the first mating end 122 are exposed on the outer surface of the frame 110.

[0038] The main circuit board 30 is provided with a grounding mating part 310 and a power supply mating part 320. A flexible circuit board 200 is disposed on the frame 110. The flexible circuit board 200 includes a first trigger part 210 and a second trigger part 220. The first trigger part 210 is electrically connected to the power supply mating part 320, and the second trigger part 220 is electrically connected to the connecting part 121. The first mating end 122 is electrically connected to the grounding mating part 310.

[0039] In this way, the current signal can be transmitted from the main circuit board 30 to the flexible circuit board 200, then from the flexible circuit board 200 to the conductive element 120 of the support 100, and then from the conductive element 120 to the main circuit board 30, so as to form a closed-loop ring current, providing structural support for the effective operation of the NFC antenna 10.

[0040] This application defines the cooperative structure of the main circuit board 30, the bracket 100, and the flexible circuit board 200, making reasonable use of the existing structure of the bracket 100, so that the bracket 100, the flexible circuit board 200, and the main board circuit all form part of the NFC antenna 10. This configuration increases the effective radiation area of ​​the NFC antenna 10, effectively increasing the card reading area of ​​the NFC antenna 10 and the card reading area of ​​the electronic device 40, which is beneficial to improving the radiation area and performance of the NFC antenna 10.

[0041] In addition, the bracket 100 forms part of the NFC antenna 10, and the bracket 100 is reused as a component of the NFC antenna 10. In this way, while ensuring the performance of the NFC antenna 10, it is beneficial to reduce the amount of flexible circuit board 200 used, thereby reducing the production cost of the NFC antenna 10.

[0042] The flexible circuit board 200 is mounted on the frame 110, and the main circuit board 30 is mounted on the frame 110. That is, the frame 110 serves as the mounting carrier for the flexible circuit board 200 and the main circuit board 30, and has the function of mounting and fixing the flexible circuit board 200 and the main circuit board 30.

[0043] Optionally, the conductive component 120 is embedded into the frame 110 by injection molding. That is, the frame 110 and the conductive component 120 are integrally formed. This structural design eliminates the assembly process of the frame 110 and the conductive component 120, thus simplifying the assembly and subsequent disassembly processes, improving assembly and disassembly efficiency, and consequently reducing production and maintenance costs. In addition, the integral formation of the frame 110 and the conductive component 120 ensures the accuracy requirements of the molding dimensions of the bracket 100.

[0044] Specifically, Figure 11 The arrows in the diagram indicate the direction of current flow.

[0045] In some embodiments, such as Figure 2 , Figure 7 and Figure 9As shown, the conductive component 120 includes: a body segment 123, which has a connecting portion 121 and one end of the body segment 123 forms a second mating end 127; and a peripheral segment 124, which is connected to the body segment 123, extends around the outer edge of the frame 110, and one end of the peripheral segment 124 forms a first mating end 122.

[0046] In this embodiment, the conductive element 120 includes a body segment 123 and a peripheral segment 124.

[0047] The main body segment 123 is provided with a connecting part 121, which is electrically connected to the flexible circuit board 200. The main body segment 123 serves as a mounting carrier for the connecting part 121, and has the function of installing and fixing the connecting part 121. It can ensure the mating dimensions between the connecting part 121 and the flexible circuit board 200. It provides structural support for the electrical connection between the flexible circuit board 200 and the connecting part 121.

[0048] Furthermore, the peripheral segment 124 is connected to the main body segment 123. The peripheral segment 124 extends around the outer edge of the frame 110. Current is transferred from the main circuit board 30 to the flexible circuit board 200, then from the flexible circuit board 200 to the main body segment 123, and finally from the main body segment 123 to the peripheral segment 124, forming a closed-loop current. The peripheral segment 124 extends around the outer edge of the frame 110, meaning it is positioned close to the outer edge of the frame 110. This close proximity results in a smaller distance between the peripheral segment 124 and the outer edge of the frame 110, making the area enclosed by the conductive element 120 closer to the area enclosed by the frame 110. This arrangement increases the surrounding area of ​​the conductive element 120, which in turn increases the effective radiation area of ​​the NFC antenna 10 and improves its performance.

[0049] It is understood that one end of the outer segment 124 forms the first mating end 122, and one end of the main body segment 123 forms the second mating end 127. That is, one end of the outer segment 124 is disconnected from one end of the main body segment 123 to enclose the gap 128. One end of the outer segment 124 is electrically connected to the grounding mating part 310.

[0050] Optionally, such as Figure 1 As shown, the conductive element 120 has a hollow region 126. This feature reduces the amount of conductive element 120 used while ensuring the performance of the conductive element 120, thereby reducing the production cost of the NFC antenna 10 and reducing its weight.

[0051] In some embodiments, the distance between the outer perimeter segment 124 and the outer edge of the frame 110 is greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0052] In this embodiment, the mating structure of the outer segment 124 and the frame 110 is further defined such that the distance between the outer segment 124 and the outer edge of the frame 110 is greater than or equal to 0.5 mm and less than or equal to 1 mm. This defines the positional relationship between the outer segment 124 and the outer edge of the frame 110. The smaller distance between the outer segment 124 and the outer edge of the frame 110 allows for a larger area around the outer segment 124, thus increasing the surrounding area of ​​the conductive element 120. This, in turn, increases the effective radiation area of ​​the NFC antenna 10 and improves its performance.

[0053] Optionally, the distance between the outer perimeter section 124 and the outer edge of the frame 110 includes 0.6mm, 0.7mm, 0.8mm and 0.9mm, etc., which will not be listed here.

[0054] In some embodiments, such as Figure 1 and Figure 11 As shown, the conductive component 120 further includes: an inner circumference section 125, the first end of which is connected to the body section 123, and the second end of which is connected to the outer circumference section 124. The inner circumference section 125 is located on the side of the outer circumference section 124 away from the outer edge of the frame 110.

[0055] In this embodiment, the conductive element 120 further includes an inner perimeter segment 125, which has a first end and a second end. The first end of the inner perimeter segment 125 is connected to the main body segment 123, and the second end of the inner perimeter segment 125 is connected to the outer perimeter segment 124. That is, both the inner perimeter segment 125 and the outer perimeter segment 124 are connected to the main body segment 123, and the inner perimeter segment 125 is also connected to the outer perimeter segment 124. In other words, the inner perimeter segment 125 and the outer perimeter segment 124 form two branches, and current can flow through both the inner perimeter segment 125 and the outer perimeter segment 124 simultaneously. This is beneficial for increasing the magnetic induction area, increasing the effective radiation area of ​​the NFC antenna 10, and improving the performance of the NFC antenna 10.

[0056] In addition, the inner section 125 and the outer section 124 work together to increase the volume of the conductive element 120, which helps to enhance the structural strength of the conductive element 120, making the bracket 100 less prone to deformation and reducing the probability of bracket 100 breaking.

[0057] In some embodiments, there are multiple inner perimeter sections 125, which are arranged at intervals along the outer edge of the frame 110 to the outer perimeter section 124.

[0058] In this embodiment, there are multiple inner perimeter sections 125, and the distribution structure of the multiple inner perimeter sections 125 is defined. Specifically, the multiple inner perimeter sections 125 are arranged at intervals along the outer edge of the frame 110 to the outer perimeter section 124.

[0059] This design increases the volume of the conductive element 120, which is beneficial for increasing the magnetic induction area and enhancing the structural strength of the conductive element 120, making the bracket 100 less prone to deformation and reducing the probability of bracket 100 breaking.

[0060] In some other embodiments, the number of inner perimeter segments 125 is one.

[0061] In some embodiments, the first mating end 122 is positioned close to the second mating end 127.

[0062] In this embodiment, the mating structure of the first mating end 122 and the second mating end 127 is further defined, such that the first mating end 122 is positioned close to the second mating end 127. Alternatively, the power supply mating portion 320 is positioned close to the ground supply mating portion 310. The conductive element 120 is a non-closed annular structure with a break, and a portion of the conductive element 120 is positioned around the outer edge of the frame 110. Positioning the first mating end 122 close to the second mating end 127 reduces the size of the break, which is beneficial for increasing the size of the conductive element 120, thereby increasing the effective radiation area of ​​the NFC antenna 10 and improving its performance.

[0063] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the flexible circuit board 200 also includes a flexible body 230, which is located between one side wall of the frame 110 and the conductive element 120, and extends along the outer edge of the frame 110; the first trigger part 210 and the second trigger part 220 are both connected to the flexible body 230.

[0064] In this embodiment, the flexible circuit board 200 further includes a flexible body 230. The first trigger part 210 and the second trigger part 220 are both connected to the flexible body 230. That is, the first trigger part 210 is connected to the flexible body 230, and the second trigger part 220 is connected to the flexible body 230.

[0065] Since the flexible circuit board 200 is a component of the NFC antenna 10, by reasonably setting the cooperative structure between the flexible circuit board 200 and the frame 110, the flexible body 230 is located between one side wall of the frame 110 and the conductive element 120, and the flexible body 230 extends along the outer edge of the frame 110, that is, the flexible body 230 is located on one side of the conductive element 120. In this way, the magnetic induction area of ​​the NFC antenna 10 can be increased, which is beneficial to increasing the effective radiation area of ​​the NFC antenna 10 and improving the performance of the NFC antenna 10.

[0066] In some embodiments, such as Figure 2, Figure 3 , Figure 4 , Figure 6 , Figure 8 and Figure 11 As shown, the flexible body 230 is located on the side of the frame 110 away from the main circuit board 30; the frame 110 is provided with a clearance opening 116, the first end of the first trigger part 210 is connected to the flexible body 230, the second end of the first trigger part 210 extends through the clearance opening 116 to the power supply mating part 320 and is electrically connected to the power supply mating part 320; the second trigger part 220 extends in a direction away from the flexible body 230 and is electrically connected to the connecting part 121, and the second trigger part 220 and the flexible body 230 are located on the same side of the frame 110.

[0067] In this embodiment, the frame 110 is provided with a clearance opening 116, which is used to avoid the first trigger part 210. The first end of the first trigger part 210 is connected to the flexible body 230, and the second end of the first trigger part 210 extends through the clearance opening 116 to the power supply mating part 320 and is electrically connected to the power supply mating part 320.

[0068] It is understood that a portion of the first trigger part 210 is located on the same side of the frame 110 as the flexible body 230, and another portion of the first trigger part 210 is located on the same side of the frame 110 as the main circuit board 30.

[0069] The flexible body 230 and the main circuit board 30 are located on both sides of the frame 110, and the flexible circuit board 200 is effectively connected to the main circuit board 30 to provide structural support.

[0070] The first trigger part 210 is an elastic element, which can be bent to the power supply mating part 320.

[0071] In some embodiments, along the extending direction of the flexible body 230, the connection point between the second trigger portion 220 and the connecting portion 121 is disposed away from the second end of the first trigger portion 210.

[0072] In this embodiment, the mating structure of the first trigger portion 210 and the second trigger portion 220 is further defined such that, along the extending direction of the flexible body 230, the connection point between the second trigger portion 220 and the connecting portion 121 is located away from the second end of the first trigger portion 210. That is, along the extending direction of the flexible body 230, the distance from the connection point between the second trigger portion 220 and the connecting portion 121 to the second end of the first trigger portion 210 is relatively large.

[0073] This configuration helps to increase the magnetic induction area of ​​the NFC antenna 10, increase the effective radiation area of ​​the NFC antenna 10, and improve the performance of the NFC antenna 10.

[0074] In some embodiments, such as Figure 2 As shown, the frame 110 is provided with a mounting groove 114, and the flexible body 230 is disposed in the mounting groove 114.

[0075] In this embodiment, the mating structure of the frame 110 and the flexible circuit board 200 is further defined, such that the frame 110 is provided with a mounting groove 114, and the flexible body 230 of the flexible circuit board 200 is disposed in the mounting groove 114. The mounting groove 114 serves to install and fix the flexible circuit board 200. This further defines the mating dimensions of the flexible circuit board 200, the conductive element 120, and the main circuit board 30, ensuring the effectiveness and reliability of the NFC antenna 10.

[0076] In addition, the flexible body 230 is located in the mounting slot 114, which makes reasonable use of the existing structure of the frame 110. This arrangement can reduce the mating size of the bracket 100 and the flexible circuit board 200 along the thickness direction of the NFC antenna 10. That is, it can reduce the stacking thickness of the NFC antenna 10, which is conducive to the thinner and lighter design of the electronic device 40.

[0077] Optionally, the gap between the wall of the mounting groove 114 and the flexible body 230 is greater than or equal to 0.15 mm and less than or equal to 0.2 mm, that is, to ensure the installation gap of the flexible body 230. This setting can ensure the ease of disassembly and assembly of the flexible circuit board 200 and the mounting groove 114, simplify the disassembly and assembly difficulty of the flexible circuit board 200 and the mounting groove 114, and allow the flexible body 230 to be placed in the mounting groove 114 without damaging the flexible circuit board 200.

[0078] The gaps between the wall of the mounting groove 114 and the flexible body 230 include 0.16mm, 0.17mm, 0.18mm and 0.19mm, etc., which will not be listed here.

[0079] In some embodiments, such as Figure 2 As shown, the mounting groove 114 is located on the periphery of the conductive element 120.

[0080] In this embodiment, the positional relationship between the mounting groove 114 and the conductive element 120 is further defined. Specifically, the mounting groove 114 is located on the periphery of the conductive element 120. That is, along the thickness direction perpendicular to the NFC antenna 10, the mounting groove 114 is located on one side of the conductive element 120.

[0081] The mounting slot 114 serves to mount and secure the flexible circuit board 200. By defining the mating structure between the mounting slot 114 and the conductive element 120, the mating structure between the flexible circuit board 200 and the conductive element 120 can be defined. Compared to the arrangement where the flexible circuit board 200 is stacked on one side of the conductive element 120 along the thickness direction of the NFC antenna 10, this arrangement can reduce the stacking thickness of the NFC antenna 10, thus contributing to a thinner and lighter design of the electronic device 40.

[0082] In some embodiments, one of the flexible circuit board 200 and the frame 110 is provided with a positioning post 400, and the other is provided with a positioning hole 500, with the positioning post 400 inserted into the positioning hole 500.

[0083] In this embodiment, one of the flexible circuit board 200 and the frame 110 is provided with a positioning post 400, and the other is provided with a positioning hole 500. That is, the flexible circuit board 200 is provided with a positioning post 400, and the frame 110 is provided with a positioning hole 500. Alternatively, the flexible circuit board 200 is provided with a positioning hole 500, and the frame 110 is provided with a positioning post 400.

[0084] The positioning post 400 is inserted into the positioning hole 500, which can limit the relative displacement of the flexible circuit board 200 and the frame 110, so that the flexible circuit board 200 and the frame 110 are assembled together stably and reliably.

[0085] Optionally, one of the flexible body 230 and the mounting groove 114 is provided with a positioning post 400, and the other of the flexible body 230 and the mounting groove 114 is provided with a positioning hole 500.

[0086] Optionally, the electronic device 40 may be a mobile terminal such as a mobile phone, a wearable device, a tablet computer, a laptop computer, a mobile computer, an augmented reality device (also known as an AR device), a virtual reality device (also known as a VR device), and a handheld game console, etc.

[0087] In some embodiments, such as Figure 2 As shown, the mounting slot 114 and the main circuit board 30 of the frame 110 are located on both sides of the frame 110.

[0088] In this embodiment, the mating structure of the mounting slot 114, the main circuit board 30, and the frame 110 is further defined, such that the mounting slot 114 is located on the first side of the frame 110, and the main circuit board 30 is located on the second side of the frame 110, with the first and second sides of the frame 110 being arranged opposite to each other. That is, the mating structure of the flexible circuit board 200, the main circuit board 30, and the frame 110 is defined, for example, the flexible body 230 of the flexible circuit board 200 and the main circuit board 30 are located on both sides of the frame 110.

[0089] This setup ensures that both the flexible circuit board 200 and the main circuit board 30 are effectively assembled with the frame 110, while also preventing interference or overlapping between the flexible circuit board 200 and the main circuit board 30, thus effectively utilizing the installation space of the frame 110.

[0090] Specifically, the NFC antenna 10 of this application includes a bracket 100, a flexible circuit board 200, and a main circuit board 30. The main circuit board 30, the bracket 100, and the flexible circuit board 200 form a closed-loop NFC antenna 10. The conductive element 120 of the bracket 100 (e.g., the conductive element 120 is a metal insert) serves as part of the loop circuit of the NFC antenna 10, solving the bottleneck problem of stacking space, meeting the requirements of antenna function, and significantly increasing the equivalent area of ​​the NFC antenna 10, thereby improving the performance and reading distance of the NFC antenna 10.

[0091] Conductive component 120 is made of stainless steel Conductive components, stainless steel Conductive component or aluminum alloy conductive component. The thickness of conductive component 120 is greater than or equal to 0.2 mm and less than or equal to 0.25 mm. Conductive component 120 is embedded into the plastic frame 110 through secondary injection molding. Conductive component 120 has a notch 128 to prevent it from forming a closed loop. After secondary injection molding, conductive component 120 is cured in the plastic to form the support 100.

[0092] The flexible circuit board 200 needs to be attached to the frame 110 via mounting grooves 114 and multiple positioning posts 400 arranged around its perimeter. The gap between the flexible circuit board 200 and the groove wall of the mounting groove 114 is greater than or equal to 0.15mm and less than or equal to 0.2mm. The flexible circuit board 200 has corresponding copper traces, and optionally, the trace length of the flexible circuit board 200 is not less than 40mm. A first trigger part 210 is provided on the left side of the flexible circuit board 200. The first trigger part 210 is folded back and glued to the back of the frame 110 through the clearance opening 116 of the frame 110. A first spring is arranged at the corresponding position on the main circuit board 30. The first spring contacts the first trigger part 210 of the flexible circuit board 200, and the first spring and the first trigger part 210 overlap to complete the current signal feeding function. The current signal is routed through the flexible circuit board 200 to the right side of the flexible circuit board 200. A second trigger part 220 is provided on the right side of the flexible circuit board 200. The second trigger part 220 is a copper foil gold-plated part. The ultrasonic welding process is used to connect the second trigger part 220 to the connection part 121 of the conductive part 120, so that the current signal can be transmitted from the flexible circuit board 200 to the conductive part 120.

[0093] The connection methods between the flexible circuit board 200 and the conductive component 120 include, but are not limited to, ultrasonic welding, spot welding, etc., which will not be listed here.

[0094] The notch 128 of the conductive element 120 corresponds to the second spring piece arranged in the main circuit board 30. The second spring piece and the first mating end 122 of the conductive element 120 are connected to achieve current feeding. The second spring piece realizes current feeding to the ground. The return point of the bracket 100 is as close as possible to the power feeding point.

[0095] like Figure 11 As shown, the bracket 100, as part of the NFC antenna 10, forms a closed-loop ring current, and the current direction is unique at each point, resulting in a high intensity of the entire induced magnetic field.

[0096] like Figure 12 As shown, the effective magnetic induction area 20 (equivalent card swiping area) of the NFC antenna 10 reaches 1800 mm. 2 This greatly increases the radiation area.

[0097] Table 1

[0098]

[0099] Table 2

[0100]

[0101] The horizontal and vertical coordinate parameters outside the outer frame lines in Tables 1 and 2 indicate the position, while the parameters inside the outer frame lines are the coupling voltages (the unit of coupling voltage is V). The larger the coupling voltage, the stronger the corresponding magnetic induction energy and the larger the card reading area. The coupling voltage is related to the position.

[0102] As shown in Tables 1 and 2, the antenna performance is better when the bracket 100 is used as part of the NFC antenna 10 and the ground plane is close to the power supply. The number of light gray areas in this application is 19 more than in related technologies, increasing the card reading area by 60%.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that, include: The main circuit board is provided with a grounding connection part and a power supply connection part; A bracket is disposed on one side surface of the main circuit board. The bracket includes a frame and a conductive component. The conductive component is embedded in the frame and includes a connecting part, a first mating end, and a second mating end. The first mating end and the second mating end are provided with a notch at a relative interval. The connecting part and the first mating end are both exposed outside the frame. The first mating end is electrically connected to the grounding mating part. A flexible circuit board is disposed on the support. The flexible circuit board includes a first trigger part and a second trigger part. The first trigger part is electrically connected to the power supply mating part, and the second trigger part is electrically connected to the connecting part. The main circuit board, the bracket, and the flexible circuit board constitute the NFC antenna of the electronic device. When the NFC antenna is in operation, the main circuit board, the flexible circuit board, and the bracket form a closed loop.

2. The electronic device according to claim 1, characterized in that, The conductive element includes: The body segment has the connecting portion, and one end of the body segment forms the second mating end; The outer perimeter segment is connected to the main body segment. The outer perimeter segment extends around the outer edge of the frame, and one end of the outer perimeter segment forms the first mating end.

3. The electronic device according to claim 2, characterized in that, The conductive element further includes: The inner perimeter section has a first end connected to the body section and a second end connected to the outer perimeter section. The inner perimeter section is located on the side of the outer perimeter section away from the outer edge of the frame.

4. The electronic device according to claim 3, characterized in that, The number of inner perimeter sections is multiple, and the multiple inner perimeter sections are arranged at intervals along the outer edge of the frame to the outer perimeter section.

5. The electronic device according to claim 2, characterized in that, The first mating end is positioned close to the second mating end.

6. The electronic device according to any one of claims 1 to 5, characterized in that, The flexible circuit board further includes a flexible body, which is located between one side wall of the frame and the conductive element, and the flexible body extends along the outer edge of the frame; Both the first triggering part and the second triggering part are connected to the flexible body.

7. The electronic device according to claim 6, characterized in that, The flexible body is located on the side of the frame away from the main circuit board; The frame is provided with a clearance opening. The first end of the first trigger part is connected to the flexible body, and the second end of the first trigger part extends through the clearance opening to the power supply mating part and is electrically connected to the power supply mating part. The second triggering part extends away from the flexible body and is electrically connected to the connecting part. The second triggering part and the flexible body are located on the same side of the frame.

8. The electronic device according to claim 7, characterized in that, Along the extending direction of the flexible body, the connection point between the second trigger portion and the connecting portion is located away from the second end of the first trigger portion.

9. The electronic device according to claim 6, characterized in that, The frame is provided with a mounting slot, and the flexible body is disposed in the mounting slot.

10. The electronic device according to any one of claims 1 to 5, characterized in that, One of the flexible circuit board and the frame is provided with a positioning post, and the other is provided with a positioning hole, with the positioning post inserted into the positioning hole.

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