Antenna structure and terminal equipment

Abstract

The utility model relates to an antenna structure and terminal equipment, the antenna structure comprises a circuit board and a plurality of signal amplification devices, the plurality of signal amplification devices are arranged on the circuit board, a first gap is arranged between at least part of the signal amplification devices, and the first gap is used for avoiding a target device. According to the invention, the first gap is arranged between the signal amplification devices to avoid other target devices on the terminal equipment, so that the target devices and the antenna structure are stacked in a staggered manner, thereby improving the space utilization rate, facilitating the reduction of the thickness of the whole machine, and achieving the miniaturization and integration design of the terminal equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to an antenna structure and a terminal device. Background Art

[0002] With the progress of technologies, functions such as NFC (Near Field Communication) are increasingly widely applied to various terminal devices. However, as the needs of users for the functions of terminal devices gradually become diversified, the antenna structures and electronic components that need to be arranged inside the terminal devices also gradually increase, resulting in an increase in the thickness of the terminal devices, which is not conducive to meeting the design requirements for the thin and light of terminal devices and also affects the integrated design of terminal devices. Summary of the Utility Model

[0003] To overcome the problems existing in the related technologies, the present disclosure provides an antenna structure and a terminal device.

[0004] According to a first aspect of the present disclosure, there is provided an antenna structure, including:

[0005] A circuit board;

[0006] A plurality of signal amplifying devices, the plurality of signal amplifying devices are arranged on the circuit board, and a first gap is arranged between at least some of the signal amplifying devices, and the first gap is used to avoid a target device.

[0007] In a possible implementation manner, a second gap is arranged between at least some of the signal amplifying devices, the second gap is arranged in a target area, and the stress value of the target area is greater than or equal to a preset stress value.

[0008] In a possible implementation manner, the distance of the first gap is greater than 0 mm and less than or equal to 2 mm; and / or,

[0009] The distance of the second gap is greater than or equal to 0.3 mm.

[0010] In a possible implementation manner, the circuit board includes a first section and a second section connected in sequence, the first section extends along a first direction, the second section extends along a second direction, and a preset included angle exists between the first direction and the second direction;

[0011] The first section is provided with a first signal amplifying device and a second signal amplifying device, and the second section is provided with a third signal amplifying device.

[0012] In a possible implementation manner, the first gap exists between the first signal amplifying device and the second signal amplifying device, and a second gap is arranged between the second signal amplifying device and the third signal amplifying device;

[0013] The first gap and the second gap both extend along the second direction.

[0014] In a possible embodiment, the circuit board also includes a first connecting portion and a second connecting portion, the first connecting portion is arranged at an end of the first section away from the second section, the second connecting portion is arranged at an end of the second section away from the first section, and the first connecting portion and the second connecting portion are both used to electrically connect to an external circuit.

[0015] In a possible implementation manner, the signal amplifier device and / or the circuit board is provided with a crack prevention groove.

[0016] In a possible implementation, the circuit board includes a flexible circuit board, and the signal amplifying device includes a signal amplifying board.

[0017] In a possible implementation, the flexible printed circuit constitutes an NFC antenna.

[0018] In a possible implementation manner, the signal amplifying board is adhesively connected to the flexible printed circuit board.

[0019] According to a second aspect of the present disclosure, a terminal device is provided, including a mainboard and an antenna structure as described in the first aspect of the present disclosure connected to the mainboard.

[0020] In a possible implementation, the terminal device further includes a mainboard bracket, the mainboard is disposed on the mainboard bracket, and a side of the signal amplifier of the antenna structure away from the circuit board of the antenna structure is adhesively connected to the mainboard bracket.

[0021] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the present disclosure avoids other target devices on the terminal device by setting a first gap between the signal amplifying devices, so that the target devices and the antenna structure are staggered and stacked, thereby improving space utilization, which is beneficial to reducing the thickness of the whole machine and realizing the miniaturization and integrated design of the terminal device.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] Figure 1 is a schematic diagram showing an antenna structure according to an exemplary embodiment. Detailed Implementation Modes

[0025] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] With the progress of technology, functions such as NFC are more and more widely applied to various terminal devices. However, as the user's demand for the functions of terminal devices gradually diversifies, the antenna structures and electronic devices that need to be set inside the terminal devices are also gradually increasing, resulting in an increase in the thickness of the terminal devices, which is not conducive to meeting the design requirements for the integration of terminal devices. At the same time, it also cannot meet the pursuit of young users for the thin and light of terminal devices.

[0027] At present, the thickness of the terminal device in the stacking direction is affected by the thickness of the battery cover, the thickness of the receiver unit and the back glue, the thickness of the middle frame wall, the thickness of the waterproof back glue, and the thickness of the screen module, etc. Among them, for different models of terminal devices, the thickness of the battery cover, the receiver unit and the back glue are generally fixed with different models, the waterproof back glue is selected according to the waterproof level requirements, the thickness of the middle frame wall is affected by the audio equipment of the model, and the thickness of the screen module generally changes little. After the above thicknesses are determined, the space available for adjusting the thickness of the whole machine is locked. Therefore, in the available adjustment space, it is necessary to install a main board bracket, NFC, foam, graphite, etc. How to reasonably layout and set the above-mentioned devices to further reduce the thickness size and achieve the ultimate thin and light design has become an urgent problem to be solved.

[0028] To solve the above technical problems, the present disclosure provides an antenna structure and a terminal device. By setting a first gap between signal amplification devices to avoid other target devices, the target devices are stacked staggered with the antenna structure, thereby improving the space utilization rate, being beneficial to reducing the thickness of the whole machine, and realizing the miniaturization and integration design of the terminal device.

[0029] According to an exemplary embodiment, as Figure 1As shown, an embodiment of the present disclosure provides an antenna structure, which is used to realize signal transmission and reception. The antenna structure includes a circuit board 10 and a plurality of signal amplifiers 20. The circuit board 10 may be an FPC (Flexible Printed Circuit Board) or a PCB (Printed Circuit Board). The plurality of signal amplifiers 20 are arranged on the circuit board 10. A first gap 31 is arranged between at least some of the signal amplifiers 20. The first gap 31 is used to avoid a target device (not shown in the figure). By setting the first gap 31 to avoid the target device installed at the position, the target device and the signal amplifier 20 can be staggered to avoid stacking between the target device and the signal amplifier 20, thereby reducing the size of the terminal device in the thickness direction. It should be noted that, according to the design requirements of the target device on the terminal device, when the number of target devices to be avoided is multiple, multiple first gaps 31 can be set to avoid the target devices at various locations.

[0030] The signal amplifier 20 may be a non-metallic magnetic material such as ferrite, and is used to amplify the signal of the circuit board 10 to meet the use requirements of the antenna. A plurality of signal amplifiers 20 may be formed by dividing the whole piece of ferrite by opening at least one first gap 31, thereby forming a plurality of independent signal amplifiers 20. The shape formed by the combination of the plurality of signal amplifiers 20 is roughly consistent with the shape of the area on the circuit board 10 for realizing the signal transceiver function.

[0031] The target device can be other devices arranged on the circuit board 10, or other devices arranged on the mainboard of the terminal device. As long as it is a device position that needs to be avoided, a first gap 31 can be set between the signal amplifier device 20 corresponding to the position to avoid the target device, so as to achieve signal amplification while taking into account the overall stacking layout. Since the first gap 31 can avoid the target device, the target device and the signal amplifier device 20 at least partially overlap in the thickness direction, thereby improving the utilization rate of the internal space of the terminal device. Compared with the related art, the embodiment of the present disclosure can reduce the size of the terminal device in the thickness direction by at least 0.15mm, so that the thickness of the whole device can be reduced to less than 8mm, which improves the compactness of the antenna structure and is conducive to the thin and light design of the terminal device.

[0032] In some embodiments, a second gap 32 is provided between at least some of the signal amplifying devices 20. Figure 1As shown, the second gap 32 is disposed in the target area 101, and the stress value of the target area 101 is greater than or equal to a preset stress value. Here, the preset stress value can be set to a stress value that may cause the circuit board 10 and / or the signal amplification device to bend and deform. Setting the second gap 32 in the target area 101 can play a role in releasing stress, avoiding stress concentration, which may cause the circuit board 10 or the signal amplification device 20 to deform or even break, affecting the normal function of the antenna structure. The specific magnitude of the preset stress value in the embodiments of the present disclosure is not overly limited. Those skilled in the art can obtain it through testing or simulation and set it according to actual needs. When there are multiple target areas 101 with stress concentration, multiple second gaps 32 can be correspondingly disposed at the multiple target areas 101 to release the stress values of the respective target areas 101 and avoid stress concentration.

[0033] In some embodiments, the distance of the first gap 31 is greater than 0 mm and less than or equal to 2 mm; and / or, the distance of the second gap 32 is greater than or equal to 0.3 mm. In one example, the distance of the first gap 31 is greater than 0 mm and less than or equal to 2 mm to ensure that while avoiding the target device, it will not overly affect the efficiency of the antenna. In another example, the distance of the second gap 32 is greater than or equal to 0.3 mm to play a good role in releasing stress. It should be noted that the first gap 31 and the second gap 32 can also be both set to have a distance greater than or equal to 0.3 mm and less than or equal to 2 mm to simultaneously meet the effects of avoiding the target device and realizing stress release, and at the same time, it will not have an obvious impact on the antenna efficiency. Of course, it can be understood that when the requirement for the antenna efficiency is low, the distances of the first gap 31 and the second gap 32 can also be further increased to achieve a better avoidance effect and improve space utilization. For example, it can be set to be less than or equal to 4 mm. The embodiments of the present disclosure do not overly limit this, and those skilled in the art can select according to actual needs.

[0034] In some embodiments, the circuit board 10 includes a first section 11 and a second section 12 connected in sequence. As Figure 1 shown, the first section 11 extends along a first direction (i.e., Figure 1 the vertical direction shown in Figure 1extends in the horizontal direction shown in the figure, with a preset included angle between the first direction and the second direction. Among them, the preset included angle can be approximately about 90°. The first section 11 and the second section 12 are approximately perpendicular to each other, and the two form a shape that is roughly L-shaped. It can be understood that the preset included angle between the first direction and the second direction can also be set by those skilled in the art according to actual needs. For example, it can be set to any angle between 45° and 135°. The embodiments of the present disclosure do not impose excessive restrictions on the size of the preset included angle. The shapes and sizes of the first section 11 and the second section 12 are set according to the design requirements of the terminal device, as long as the radiation effect requirements of the antenna can be achieved.

[0035] In one example, the circuit board 10 further includes a first connection portion 111 and a second connection portion 121. As Figure 1 shown, the first connection portion 111 is disposed at one end of the first section 11 away from the second section 12, and the second connection portion 121 is disposed at one end of the second section 12 away from the first section 11. Both the first connection portion 111 and the second connection portion 121 are used for electrically connecting to an external circuit. Among them, the external circuit can be a power supply circuit, a matching circuit, a tuning circuit, etc. One of the first connection portion 111 and the second connection portion 121 can be a feeding point, and the other can be a grounding point. It is also possible that both are used for electrically connecting to the external circuit. The external circuits connected by the first connection portion 111 and the second connection portion 121 can be the same or different. The embodiments of the present disclosure do not impose excessive restrictions on the specific connection forms of the first connection portion 111 and the second connection portion 121 to the external circuit, and those skilled in the art can select according to actual needs.

[0036] In some embodiments, as Figure 1 shown, the first section 11 is provided with a first signal amplifying device 21 and a second signal amplifying device 22, and the second section 12 is provided with a third signal amplifying device 23. The sizes of the first signal amplifying device 21, the second signal amplifying device 22, and the third signal amplifying device 23 can be different from each other in pairs, or the same in pairs, or the sizes of two of them are the same, and the size of the other signal amplifying device is different from the two. The embodiments of the present disclosure do not impose excessive restrictions on this, and those skilled in the art can set according to actual needs. The shape and size of each signal amplifying device need to be consistent with the shape and size of the area of the circuit board it covers, so as to better achieve the signal amplification effect.

[0037] In one example, there is a first gap 31 between the first signal amplifying device 21 and the second signal amplifying device 22, and a second gap 32 is provided between the second signal amplifying device 22 and the third signal amplifying device 23. Among them, the extending directions of the first gap 31 and the second gap 32 are the same, and both the first gap 31 and the second gap 32 are along the second direction, that is Figure 1extends in the horizontal direction shown in the figure. Of course, it can be understood that the extending directions of the first gap 31 and the second gap 32 can also be approximately the same, that is, the extending directions of the first gap 31 and the second gap 32 are both approximately along the second direction, and the included angle between their extending directions can be 0° to 15°. Here, it should be noted that according to the shapes of the target device to be avoided and the target area, one of the first gap 31 and the second gap 32 can extend along Figure 1 the lateral direction in Figure 1 and the other can extend along

[0038] the vertical direction in. The specific extending directions of the first gap 31 and the second gap 32 can be set according to the overall layout requirements of the terminal device, and the embodiments of the present disclosure do not limit this too much.

[0039] In some embodiments, the signal amplification device 20 and / or the circuit board 10 are provided with a crack arrest groove 40. In one example, the signal amplification device 20 is provided with a crack arrest groove 40. Since the signal amplification device 20 is usually made of a material with a certain rigidity such as ferrite and is relatively easy to break when bent and stress concentration occurs, therefore, setting the crack arrest groove 40 can play a role in stress release and avoid the signal amplification device 20 being broken due to stress concentration. Among them, the crack arrest groove 40 can be an opening with a smooth curve such as a circular arc or a semi-circular shape. In another example, the circuit board 10 is provided with a crack arrest groove 40. When the circuit board 10 is a PCB board, the risk of breaking when bent is relatively high. Setting the crack arrest groove 40 on the circuit board 10 to release stress can effectively prevent the circuit board 10 from breaking due to stress concentration. In yet another example, both the signal amplification device 20 and the circuit board 10 are provided with a crack arrest groove 40, which can play a better protective role for both the signal amplification device 20 and the circuit board 10.

[0039] In some embodiments, the crack arrest groove 40 includes a first crack arrest groove 41 and / or a second crack arrest groove 42. As Figure 1As shown, the first crack arrest groove 41 and the second crack arrest groove 42 are both provided at the third signal amplification device 23. Among them, the first section 11 and the second section 12 of the circuit board 10 are connected by a smooth arc transition to reduce stress concentration and the risk of fracture. The first crack arrest groove 41 is provided at the connection between the first section 11 and the second section 12, and the second crack arrest groove 42 is provided at the connection between the second section 12 and the second connection portion 121. In one example, the crack arrest groove 40 includes the first crack arrest groove 41, which is used to further reduce the risk of fracture of the circuit board 10 and / or the third signal amplification device 23 at the connection position between the first section 11 and the second section 12. In another example, the crack arrest groove 40 includes the second crack arrest groove, which is used to avoid fracture at the connection between the second connection portion 121 and the second section 12. In yet another example, the crack arrest groove 40 includes the first crack arrest groove 41 and the second crack arrest groove 42, thereby reducing the risk of fracture at multiple positions simultaneously and improving the stability and reliability of the antenna structure. Of course, it can be understood that the position of the crack arrest groove 40 is not limited to the two positions described above, and those skilled in the art can also set the crack arrest groove 40 at other positions where stress concentration is likely to occur according to needs, and the embodiments of the present disclosure do not impose too many restrictions on this.

[0040] In some embodiments, the circuit board 10 includes a flexible circuit board, and the signal amplification device 20 includes a signal amplification board. The flexible circuit board constitutes an NFC antenna for realizing the NFC signal transceiver function, and the signal amplification board is used to amplify the signals generated by the flexible circuit board. Among them, the signal amplification board is a plate-like structure made of a non-metallic magnetic material such as ferrite, so as to be easily attached to the circuit board 10, and the signal amplification board is adhesively connected to the flexible circuit board. At the same time, since the embodiments of the present disclosure split the existing signal amplification board as a whole into multiple independent signal amplification boards with gaps between them, it not only does not increase the material cost, but also can meet the requirement for realizing the signal amplification effect. In addition, the multiple independent signal amplification boards can achieve various assembly effects according to the layout requirements of the internal space, bringing more possibilities for the space utilization of the terminal device.

[0041] Adopting the antenna structure in the present disclosure, in an exemplary embodiment, a buffer foam with a thickness of 0.075 mm, a graphite sheet with a thickness of 0.08 mm, an NFC antenna with a thickness of 0.25 mm, a main board bracket with a thickness of 0.2 mm, and an extreme avoidance gap with a thickness of 0.15 mm can be realized within a thickness space of 0.525 mm, thereby further reducing the thickness of the terminal device and meeting the user's requirement for the extremely thin thickness of the terminal device.

[0042] According to an exemplary embodiment, still referring to Figure 1As shown, embodiments of the present disclosure provide a terminal device, which may be an electronic device with antenna communication functions such as a mobile terminal, a tablet, a laptop, a smart watch, a smart bracelet, etc. The terminal device includes a main board (not shown in the figure) and an antenna structure as described in the above embodiments connected to the main board. The antenna structure includes a circuit board 10 and a plurality of signal amplifying devices 20. The plurality of signal amplifying devices 20 are arranged on the circuit board 10, and a first gap 31 is provided between at least some of the signal amplifying devices 20 for avoiding a target device (not shown in the figure).

[0043] In some embodiments, the terminal device further includes a main board bracket (not shown in the figure). The main board is arranged on the main board bracket. One side of the signal amplifying device 20 of the antenna structure away from the circuit board 10 of the antenna structure is adhesively connected to the main board bracket, that is, the signal amplifying device 20 is adhesively connected to the circuit board 10 and the main board bracket respectively to fix the circuit board 10 on the main board bracket, and the circuit board 10 is also electrically connected to the main board.

[0044] After considering the specification and practicing the disclosed embodiments herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0045] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An antenna structure, characterized in that: include: Circuit boards; A plurality of signal amplifying devices are arranged on the circuit board, and a first gap is arranged between at least some of the signal amplifying devices, wherein the first gap is used to avoid the target device.

2. The antenna structure according to claim 1, characterized in that: A second gap is arranged between at least some of the signal amplifying devices, and the second gap is arranged in a target area, and a stress value of the target area is greater than or equal to a preset stress value.

3. The antenna structure according to claim 2, characterized in that: The distance of the first gap is greater than 0 mm and less than or equal to 2 mm; and / or, The distance of the second gap is greater than or equal to 0.3 mm.

4. The antenna structure according to claim 2, characterized in that: The circuit board comprises a first section and a second section connected in sequence, the first section extends along a first direction, the second section extends along a second direction, and a preset angle is formed between the first direction and the second direction; The first section is provided with a first signal amplifying device and a second signal amplifying device, and the second section is provided with a third signal amplifying device.

5. The antenna structure according to claim 4, characterized in that: The first gap is provided between the first signal amplifying device and the second signal amplifying device, and the second gap is provided between the second signal amplifying device and the third signal amplifying device; The first gap and the second gap both extend along the second direction.

6. The antenna structure according to claim 4, characterized in that: The circuit board also includes a first connecting portion and a second connecting portion, the first connecting portion is arranged at an end of the first section away from the second section, the second connecting portion is arranged at an end of the second section away from the first section, and both the first connecting portion and the second connecting portion are used to electrically connect to an external circuit.

7. The antenna structure according to any one of claims 1 to 6, characterized in that: The signal amplifier device and / or the circuit board are provided with a crack-stop groove.

8. The antenna structure according to any one of claims 1 to 6, characterized in that: The circuit board includes a flexible circuit board, and the signal amplifying device includes a signal amplifying board.

9. The antenna structure according to claim 8, characterized in that: The flexible circuit board constitutes an NFC antenna.

10. The antenna structure according to claim 8, characterized in that: The signal amplifying board is bonded and connected to the flexible circuit board.

11. A terminal device, characterized in that: The invention comprises a main board and an antenna structure as claimed in any one of claims 1 to 10 connected to the main board.

12. The terminal device according to claim 11, characterized in that: The terminal device further comprises a mainboard bracket, the mainboard is arranged on the mainboard bracket, and a side of the signal amplifier of the antenna structure away from the circuit board of the antenna structure is adhesively connected to the mainboard bracket.

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