Nfc circuit board assembly and near field communication module

Abstract

The utility model discloses a kind of NFC circuit board assembly and near field communication module.NFC circuit board assembly includes: NFC antenna, peripheral circuit, FPC board, PCB board and magnetic separation sheet;FPC board is connected with PCB board, and FPC board and PCB board are laminated, and magnetic separation sheet is set between FPC board and PCB board;NFC antenna is set on FPC board or PCB board, peripheral circuit is set on FPC board or PCB board, peripheral circuit is connected with NFC antenna, and peripheral circuit is oppositely arranged with NFC antenna.The utility model embodiment can reduce the length and width of NFC circuit board assembly, expand the use environment of NFC circuit board assembly on whole vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless communication technical field especially relates to a NFC circuit board subassembly and near field communication module. BACKGROUND

[0002] Near Field Communication (NFC) allows two devices to communicate and interact within a few centimeters, with the development of intelligent vehicles, NFC technology is widely used in vehicles.

[0003] However, the installation environment of the vehicle near field communication module is generally limited in space, the existing NFC antenna on the near field communication module is usually arranged in two schemes, Figure 1 A structural diagram of a NFC circuit board subassembly provided in the prior art, Figure 2 A structural diagram of another NFC circuit board subassembly provided in the prior art. Referring to Figure 1 In the case that the length and width direction space of the product PCB board 100 is sufficient, the NFC antenna is directly arranged on the product PCB board 100, for example, the first area 101 of the product PCB board 100 is arranged with electronic components, and the second area 102 of the product PCB board 100 is used as an NFC antenna area for arranging the NFC antenna. Referring to Figure 2 In the case that the length and width direction of the product PCB board 100 is relatively compact, a double-layer PCB board structure is used, for example, the first PCB board 103 is used to arrange electronic components, the second PCB board 104 is used as an NFC antenna area for arranging the NFC antenna, and the two layers of PCB boards are connected through the connector 105. However, the former occupies a larger space in the length and width direction, which limits its installation and arrangement on the vehicle, and the latter uses a double-layer PCB board structure, which makes the structure relatively complex, and an additional connector 105 is needed, so that the product height is relatively high, which also limits its installation and arrangement on the vehicle. INVENTION CONTENTS

[0004] The utility model provides a kind of NFC circuit board subassembly and near field communication module to reduce the length and width of NFC circuit board subassembly, expand NFC circuit board subassembly in the use environment of whole vehicle.

[0005] According to an aspect of the utility model, a kind of NFC circuit board subassembly is provided, including NFC antenna, peripheral circuit, FPC board, PCB board and magnetic separation sheet;

[0006] The FPC board is connected with the PCB board, and the FPC board and the PCB board are stacked, and the magnetic separation sheet is arranged between the FPC board and the PCB board;

[0007] The NFC antenna is arranged on the FPC board or the PCB board, the peripheral circuit is arranged on the FPC board or the PCB board, the peripheral circuit is connected with the NFC antenna, and the peripheral circuit is arranged opposite to the NFC antenna.

[0008] Optionally, the FPC board and the PCB board are electrically connected through the solder pad.

[0009] Optionally, the FPC board comprises a binding area, a bending area and a first arranging area, the binding area of the FPC board is connected with one end of the PCB board through the solder pad, the FPC board is bent to one side of the PCB board through the bending area, and the first arranging area of the FPC board is provided with the NFC antenna or the peripheral circuit.

[0010] Optionally, the NFC antenna and the peripheral circuit are arranged on different circuit boards.

[0011] Optionally, the FPC board and the PCB board are bonded.

[0012] Optionally, the FPC board covers the PCB board.

[0013] Optionally, the FPC board comprises a first arranging area, a bending area and a second arranging area, the NFC antenna is arranged on one of the first arranging area and the second arranging area, and the peripheral circuit is arranged on the other one, and the FPC board is bent to one side of the PCB board through the bending area.

[0014] Optionally, the magnetic isolation sheet is pasted on the FPC board.

[0015] Alternatively, the magnetic isolation sheet is pasted on the PCB board.

[0016] Alternatively, the magnetic isolation sheet is pasted on an insulating medium, and the insulating medium is connected with the PCB board or the FPC board.

[0017] Optionally, the NFC antenna is arranged on the FPC board, and one side of the FPC board provided with the NFC antenna is arc-shaped.

[0018] Optionally, the angle between the FPC board and the PCB board is adjustable.

[0019] According to another aspect of the present application, a near field communication module is provided, comprising the NFC circuit board assembly provided in any of the above embodiments.

[0020] The technical scheme of the embodiment of the utility model discloses, through the laminated setting of the flexible FPC board and the rigid PCB board, and the relative setting of NFC antenna and peripheral circuit respectively, can reduce the volume of NFC circuit board assembly, and the magnetic separation sheet is set between FPC board and PCB board, through the absorption and attenuation of metal on PCB board or FPC board to NFC antenna magnetic field, can guarantee the signal transmission quality of NFC antenna.

[0021] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, and is not used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0023] Figure 1 It is a structural schematic view of the NFC circuit board assembly provided in the prior art;

[0024] Figure 2 It is another structural schematic view of the NFC circuit board assembly provided in the prior art;

[0025] Figure 3 It is a structural schematic view of the NFC circuit board assembly provided in the embodiment of the utility model;

[0026] Figure 4 It is another structural schematic view of the NFC circuit board assembly provided in the embodiment of the utility model;

[0027] Figure 5 It is a left view of the NFC circuit board assembly provided in the embodiment of the utility model;

[0028] Figure 6 It is a bottom view of the NFC circuit board assembly provided in the embodiment of the utility model;

[0029] Figure 7 It is another structural schematic view of the NFC circuit board assembly provided in the embodiment of the utility model;

[0030] Figure 8 A front view of the NFC circuit board assembly in an unfolded state is provided for the embodiment of the utility model,

[0031] Figure 9 A top view of the NFC circuit board assembly in an unfolded state is provided for the embodiment of the utility model,

[0032] Figure 10 Another structural schematic view of the NFC circuit board assembly is provided for the embodiment of the utility model,

[0033] Figure 11 Another structural schematic view of the NFC circuit board assembly is provided for the embodiment of the utility model. DETAILED DESCRIPTION

[0034] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.

[0035] It should be noted that the terms "first", "second" and the like in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and their variants are intended to cover non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0036] The embodiment of the utility model provides a kind of NFC circuit board assembly to reduce the length and width of NFC circuit board assembly, Figure 3 A structural schematic view of the NFC circuit board assembly is provided for the embodiment of the utility model, Figure 4 Another structural schematic view of the NFC circuit board assembly is provided for the embodiment of the utility model, referring to Figure 3 And Figure 4The NFC circuit board assembly 10 comprises an NFC antenna 11, a peripheral circuit (not shown in the figure), an FPC board 12, a PCB board 13 and a magnetic isolation sheet 14; the FPC board 12 is connected with the PCB board 13, and the FPC board 12 and the PCB board 13 are arranged in a stack; the magnetic isolation sheet 14 is arranged between the FPC board 12 and the PCB board 13; the NFC antenna 11 is arranged on the FPC board 12 or the PCB board 13, and the peripheral circuit is arranged on the FPC board 12 or the PCB board 13; the peripheral circuit is connected with the NFC antenna 11, and the peripheral circuit and the NFC antenna 11 are arranged oppositely. Figure 3 As shown in the figure, the NFC antenna 11 is arranged on the FPC board 12.

[0037] The FPC board 12 has the characteristics of being bendable and flexible. The peripheral circuit is used as a signal receiving circuit of the NFC antenna 11, and / or a signal transmitting circuit of the NFC antenna 11, and / or an impedance matching circuit of the NFC antenna 11. The magnetic isolation sheet 14 is used to isolate the metal on the PCB board 13 or the FPC board 12 from absorbing and attenuating the magnetic field of the NFC antenna 11, so as to ensure the signal transmission quality of the NFC antenna 11.

[0038] Specifically, the FPC board 12 and the PCB board 13 are arranged in a stack, which means that one of the FPC board 12 and the PCB board 13 is arranged above the other, and the orthographic projections of the two at least partially overlap. The FPC board 12 and the PCB board 13 can be arranged horizontally (with an angle of 0°) or at a certain angle. By arranging the FPC board 12 and the PCB board 13 in a stack, the characteristics of the FPC board 12 being easy to bend can be utilized to make the height between the FPC board 12 and the PCB board 13 flexible and variable, so that the NFC circuit board assembly 10 can effectively utilize the space in the height direction, and thus the length and the width of the NFC circuit board assembly 10 can be greatly reduced under the condition of meeting the performance of the NFC antenna 11, so that the NFC circuit board assembly 10 can be arranged and used in an installation environment with limited space, and thus the NFC circuit board assembly 10 can be applied to various applicable environments on a vehicle, and the flexibility of the NFC circuit board assembly 10 is improved. By arranging the peripheral circuit and the NFC antenna 11 oppositely, the volume of the NFC circuit board assembly 10 can be further reduced on the basis of ensuring the design of maximizing the area of the NFC antenna 11.

[0039] The technical scheme of the embodiment of the utility model discloses, through the layering of the flexible FPC board 12 and the rigid PCB board 13, and the relative arrangement of the NFC antenna 11 and the peripheral circuit respectively, the volume of the NFC circuit board assembly 10 can be reduced, and the magnetic separation sheet 14 is arranged between the FPC board 12 and the PCB board 13, through the isolation of the metal on the PCB board 13 or the FPC board 12 to the absorption and attenuation of the magnetic field of the NFC antenna 11, the signal transmission quality of the NFC antenna 11 can be guaranteed.The embodiment of the utility model combines FPC board 12 and PCB board 13 as NFC circuit board assembly 10 to realize NFC function, and utilizes the easy bending characteristic of FPC board 12, can effectively utilize the space in height direction, can effectively reduce the length and width of NFC circuit board assembly 10, and then can expand the use environment of NFC circuit board assembly 10 on the whole vehicle.

[0040] On the basis of the above-mentioned embodiments, the magnetic separation sheet 14 is pasted on the FPC board 12, or the magnetic separation sheet 14 is pasted on the PCB board 13, or the magnetic separation sheet 14 is pasted on the insulating medium, and the insulating medium is connected with the PCB board 13 or the FPC board 12. The insulating medium can be foam, which can be attached to the PCB board 13 or the FPC board 12. Figure 4 The magnetic separation sheet 14 is pasted on the FPC board 12, but it is not limited to the embodiment of the utility model.

[0041] Continuing to refer to Figure 4 On the basis of the above-mentioned embodiments, the FPC board 12 and the PCB board 13 are electrically connected through the solder pad. Since the FPC board 12 is easy to bend, by bending part of the FPC board 12 to one side of the PCB board 13, the FPC board 12 and the PCB board 13 can be directly connected through the solder pad, so that the connection through the connector is not needed, the height of the NFC circuit board assembly 10 can be effectively reduced, the cost of the NFC circuit board assembly 10 is reduced, the problem of high installation precision between the connectors is avoided, and the production process complexity is further reduced.

[0042] Figure 5 A left view of the NFC circuit board assembly provided by the embodiment of the utility model, Figure 6 A bottom view of the NFC circuit board assembly provided by the embodiment of the utility model, specifically Figure 4 A left view and a bottom view of the NFC assembly provided in the embodiment of the utility model. Reference Figures 4 to 6On the basis of the above embodiments, the FPC board 12 comprises a binding area 121, a bending area 122 and a first placement area 123, the binding area 121 of the FPC board 12 is connected with one end of the PCB board 13 through a solder pad, the FPC board 12 is bent to one side of the PCB board 13 through the bending area 122, and the first placement area 123 of the FPC board 12 is provided with the NFC antenna 11 or the peripheral circuit; wherein the NFC antenna 11 and the peripheral circuit are arranged on different circuit boards. Through the arrangement, the height between the FPC board 12 and the PCB board 13 can be flexibly adjusted by utilizing the easy bending characteristic of the FPC board 12. When the first placement area 123 of the FPC board 12 is provided with the NFC antenna 11, the peripheral circuit is arranged on the PCB board 13; when the first placement area 123 of the FPC board 12 is provided with the peripheral circuit, the NFC antenna 11 is arranged on the PCB board 13.

[0043] It can be understood that when the height of the whole vehicle installation environment is sufficient, the distance between the FPC board 12 and the PCB board 13 can be increased as much as possible to reduce the interference of the peripheral circuit on the NFC antenna 11.

[0044] Figure 7 Another structural schematic view of an NFC circuit board assembly provided by the embodiment of the utility model is provided with reference to Figure 7 On the basis of the above embodiments, the FPC board 12 is adhesively connected with the PCB board 13. Through the arrangement, the FPC board 12 and the PCB board 13 can be connected without a connector, the height of the NFC circuit board assembly 10 can be effectively reduced, the cost of the NFC circuit board assembly 10 can be reduced, the problem of high installation precision between the connectors can be avoided, and the production process complexity can be reduced.

[0045] Continuously referring to Figure 7 On the basis of the above embodiments, the FPC board 12 covers the PCB board 13. Specifically, the peripheral circuit can be arranged on one side of the FPC board 12 to which the PCB board 13 is adhesively connected, and the NFC antenna 11 is arranged on the other side of the FPC board 12; or the NFC antenna 11 can be arranged on one side of the FPC board 12 to which the PCB board 13 is adhesively connected, and the peripheral circuit is arranged on the other side of the FPC board 12. In this case, the PCB board 13 can be used as a reinforcing plate to play a supporting role.

[0046] Figure 8 A front view of an NFC circuit board assembly in an unfolded state provided by the embodiment of the utility model, Figure 9 A top view of an NFC circuit board assembly in an unfolded state provided by the embodiment of the utility model, specifically Figure 7 A front view and a top view of an NFC circuit board assembly in an unfolded state provided by the embodiment of the utility model, wherein Figure 8 The PCB board 13 is not shown in the utility model. Referring toFigures 7 to 9 Optionally, the FPC board 12 comprises a first arranging area 123, a bending area 122 and a second arranging area 124, the NFC antenna 11 is arranged on one of the first arranging area 123 and the second arranging area 124, and the peripheral circuit is arranged on the other one, and the FPC board 12 is bent to one side of the PCB board 13 through the bending area 122. Figure 8 The first arranging area 123 is exemplarily shown as being provided with the NFC antenna 11, but is not as a limitation to the utility model. Through the arrangement, the height between the FPC board 12 and the PCB board 13 can be flexibly adjusted by utilizing the easy bending characteristic of the FPC board 12.

[0047] Figure 10 Another structural schematic diagram of the NFC circuit board assembly provided by the utility model is shown in FIG. 6. Figure 8 And Figure 10 Optionally, on the basis of each of the above embodiments, the NFC antenna 11 is arranged on the FPC board 12, and one side of the FPC board 12 provided with the NFC antenna 11 is arc-shaped. Through the arrangement, the NFC circuit board assembly 10 can be used in a whole vehicle installation environment with a partial curved surface, the NFC antenna 11 can be as close to the appearance of the whole vehicle as possible, the reliability of the NFC circuit board assembly 10 can be ensured, and the NFC card swiping signal of the user can be enhanced.

[0048] Figure 11 Another structural schematic diagram of the NFC circuit board assembly provided by the utility model is shown in FIG. 6. Figure 11 Optionally, on the basis of each of the above embodiments, the angle between the FPC board 12 and the PCB board 13 is adjustable.

[0049] Specifically, since the FPC board 12 has the bending area 122, the angle between the FPC board 12 and the PCB board 13 can be formed by adjusting the bending angle of the bending area 122. Through the arrangement, the plane where the NFC antenna 11 is located can present a certain angle when the NFC circuit board assembly 10 is installed, and the application scenarios of the NFC circuit board assembly 10 are more diversified.

[0050] The utility model also provides a near field communication module, which can be applied in the field of automobiles and can also be applied in other fields. The near field communication module provided by the embodiment comprises the NFC circuit board assembly provided by any of the above embodiments, and therefore the near field communication module also has the corresponding beneficial effects.

[0051] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0052] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An NFC circuit board assembly, characterized in that, include: NFC antenna, peripheral circuitry, FPC board, PCB board, and magnetic shielding sheet; The FPC board is connected to the PCB board, and the FPC board and the PCB board are stacked together. The magnetic shielding sheet is disposed between the FPC board and the PCB board. The NFC antenna is disposed on the FPC board or the PCB board, and the peripheral circuit is disposed on the FPC board or the PCB board. The peripheral circuit is connected to the NFC antenna and is disposed opposite to the NFC antenna.

2. The NFC circuit board assembly according to claim 1, characterized in that, The FPC board and the PCB board are electrically connected via solder pads.

3. The NFC circuit board assembly according to claim 2, characterized in that, The FPC board includes a bonding area, a bending area, and a first placement area. The bonding area of ​​the FPC board is connected to one end of the PCB board through the pads. The FPC board is bent to one side of the PCB board through the bending area. The first placement area of ​​the FPC board is provided with the NFC antenna or the peripheral circuit. The NFC antenna and the peripheral circuit are mounted on different circuit boards.

4. The NFC circuit board assembly according to claim 1, characterized in that, The FPC board is bonded to the PCB board.

5. The NFC circuit board assembly according to claim 4, characterized in that, The FPC board covers the PCB board.

6. The NFC circuit board assembly according to claim 4, characterized in that, The FPC board includes a first placement area, a bending area, and a second placement area. The NFC antenna is disposed on one of the first placement area and the second placement area, and the peripheral circuit is disposed on the other. The FPC board is bent to one side of the PCB board through the bending area.

7. The NFC circuit board assembly according to claim 1, characterized in that, The magnetic shielding sheet is attached to the FPC board; Alternatively, the magnetic shielding sheet can be attached to the PCB board; Alternatively, the magnetic shielding sheet is attached to an insulating medium, which is connected to the PCB board or the FPC board.

8. The NFC circuit board assembly according to claim 1, characterized in that, The NFC antenna is disposed on the FPC board, and the side of the FPC board on which the NFC antenna is disposed is arc-shaped.

9. The NFC circuit board assembly according to claim 1, characterized in that, The angle between the FPC board and the PCB board is adjustable.

10. A near-field communication module comprising the NFC circuit board assembly according to any one of claims 1-9.

Images