Electronic device

Abstract

An electronic device includes a housing, a feed network, and a circuit board. The shell is provided with an accommodating cavity, and a feed column and a grounding column are integrally formed on the accommodating cavity. And the feed network is connected with the feed column and is used for feeding the accommodating cavity. The grounding end of the circuit board is connected with the grounding column and used for releasing static electricity on the containing cavity. In the application, at least part of the area of the accommodating cavity on the electronic equipment is multiplexed as the radiator, so that the occupation of the space in the electronic equipment can be reduced to a great extent, and meanwhile, good antenna efficiency can be obtained. Wherein the feed column and the grounding column can be integrally formed in the processing and manufacturing process of the accommodating cavity, so that the continuity of the structure can be ensured, and the situation that connection gaps are generated among the accommodating cavity, the feed column and the grounding column to influence the distribution of antenna resonance is avoided. In addition, the grounding column on the accommodating cavity is connected with the grounding end on the circuit board, so that static electricity on the accommodating cavity can be timely conducted to the grounding end of the circuit board through the grounding column to be released.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to an electronic device. Background Art

[0002] An antenna is a device for transmitting and receiving electromagnetic waves, and is widely used in electronic products such as mobile phones. For antennas covering different operating frequency bands, the sizes of the antennas are also different. For example, the L5 antenna has a lower frequency, a longer wavelength, and a smaller free-space attenuation than the L1 antenna. However, in a mobile phone, due to the more compact space inside the mobile phone, the L5 antenna has a larger size, and it is difficult to design a better-performing L5 antenna in a limited space. Summary of the Invention

[0003] In view of this, this application provides an electronic device to achieve the design of a better-performing L5 antenna in the limited space of the electronic device.

[0004] An embodiment of this application provides an electronic device, which includes a housing, a feeding network, and a circuit board. A receiving cavity is provided on the housing, at least part of the receiving cavity is provided with a metal layer, a feeding post and a grounding post are integrally formed on the receiving cavity, and the feeding post and the grounding post are electrically connected to the metal layer. The feeding network is connected to the feeding post and is used to feed the metal layer through the feeding post. The grounding end of the circuit board is electrically connected to the grounding post and is used to release the static electricity on the metal layer.

[0005] In this application, by reusing the metal layer of the receiving cavity on the electronic device as a radiator, the occupation of the space inside the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized in the limited space of the electronic device. At the same time, the L5 antenna formed by reusing the metal layer of the receiving cavity is an independent antenna and does not need to share the radiator with other antennas. The L5 antenna can obtain good antenna efficiency and has better radiation performance. Among them, the feeding post and the grounding post can be integrally formed during the processing and manufacturing of the receiving cavity, so that the receiving cavity including the feeding post and the grounding post forms an integral structure, which can ensure the continuity of the structure and avoid generating connection gaps at the electrically connected parts between the receiving cavity, the feeding post, and the grounding post, which may affect the distribution of antenna resonance, is beneficial to configuring an antenna with expected performance, and can achieve the expected radiation effect. At the same time, making the receiving cavity, the feeding post, and the grounding post integrally formed can realize the miniaturization of the antenna structure, ensure the reliability of the structure, and facilitate the assembly onto the housing. In addition, by connecting the grounding post connected to the metal layer to the grounding end on the circuit board, the static electricity on the metal layer can be conducted to the grounding end of the circuit board through the grounding post in time for release, so as to ensure the normal operation of the camera module and improve the user experience.

[0006] In one possible design, the electronic device further includes a first matching circuit, and the grounding post is electrically connected to the grounding terminal through the first matching circuit. The first matching circuit is a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the first matching circuit has the functions of impedance matching and / or frequency tuning. In the present application, more importantly, the first matching circuit can enhance the effect of static electricity discharge to the ground by matching impedance.

[0007] In a possible design, the first matching circuit includes a first metal member, one end of the first metal member is connected to the grounding column, and the other end of the first metal member is electrically connected to the grounding terminal. The first metal member can be equivalent to an inductor element, thereby being able to meet the antenna performance requirements while also meeting the need to release static electricity.

[0008] In a possible design, the first metal member includes a first connecting section, a second connecting section and an extension section, the two ends of the extension section are respectively connected to the first end of the first connecting section and the first end of the second connecting section, so that the shape of the first metal member is C-shaped, the second end of the first connecting section is connected to the grounding column, and the second end of the second connecting section is connected to the grounding terminal. The first metal member with such a structure can occupy a smaller space, and at the same time, the first metal member can have a larger physical length between the grounding column and the grounding terminal, and can be configured with an inductance that meets the antenna performance requirements and electrostatic release requirements.

[0009] In a possible design, the first matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch. The specific circuit configuration of the first matching circuit can be designed according to the antenna performance requirements and the requirements of electrostatic discharge, so that the antenna design has strong flexibility.

[0010] In one possible design, the electronic device further includes a second matching circuit, and the feeding post is connected to the feeding network through the second matching circuit. The second matching circuit is a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the second matching circuit can have similar functions to the first matching circuit, that is, the second matching circuit has impedance matching and / or frequency tuning functions.

[0011] In a possible design, the second matching circuit includes a second metal member, one end of the second metal member is connected to the feed post, and the other end of the second metal member is connected to the feed network. In a direction perpendicular to the thickness direction of the electronic device, the metal sheet of this integrated structure has a certain length dimension. In the case where the feed post and the feed network are far apart and it is difficult to directly and effectively connect the feed post and the feed network, the metal sheet can be used to achieve the transfer, thereby facilitating the design of the position of the feed post and the feed network to be more flexible and able to meet the structural layout requirements of different electronic devices.

[0012] In one possible design, the second matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch. This second matching circuit can have a similar structural form to the first matching circuit. Specifically, the capacitor, inductor or radio frequency switch can be configured according to the feeding and radiation requirements of the antenna. For example, the capacitor or inductor can be configured separately, or the capacitor and inductor can be configured at the same time, and connected in series or in parallel. A radio frequency switch can also be used. The radio frequency switch can include multiple branches, each of which can be configured with a capacitor or inductor and can be connected to the circuit through a switch. This embodiment does not impose specific restrictions on this, so that the design of the antenna can have strong flexibility.

[0013] In a possible design, a plurality of grounding posts are provided, and the plurality of grounding posts are spaced apart from each other. The plurality of grounding posts may be distributed in different position areas on the metal layer, so as to achieve the release of static electricity at different positions of the metal layer. In some embodiments, the position of the grounding post may be specifically set according to the static electricity distribution on the metal layer.

[0014] In a possible design, the grounding post includes a first grounding post and a second grounding post, the distance between the first grounding post and the feeding post is smaller than the distance between the second grounding post and the feeding post, and the equivalent inductance value of the first grounding post is greater than the equivalent inductance value of the second grounding post. Among them, the static electricity distribution near the feeding post is relatively strong, therefore, the intensity of the static electricity distribution near the first grounding post is greater than the intensity of the static electricity distribution near the second grounding post, and the stronger the static electricity distribution is in the area, the larger the equivalent inductance value of the grounding post needs to be, so that the static electricity with relatively large intensity can be effectively conducted to the ground through the grounding post, thereby achieving effective static electricity release. Therefore, in the embodiment of the present application, by making the equivalent inductance value of the first grounding post greater than the equivalent inductance value of the second grounding post, the static electricity in the area where the static electricity distribution is relatively concentrated can be effectively released to the ground, thereby ensuring the normal operation of the camera module.

[0015] In a possible design, the equivalent inductance of the first matching circuit is less than 30nH, and the equivalent inductance of the second matching circuit is less than 5nH. When the equivalent inductance of the first grounding column and the second grounding column meets the above range, the electrostatic discharge of the metal layer in the receiving cavity of the metal decorative part of the camera and the like of most electronic devices can be met.

[0016] In a possible design, one end of the first metal piece is electrically connected to the first grounding post. The first metal piece can be equivalent to an inductor element, thereby being able to meet the antenna performance requirements while also meeting the electrostatic discharge requirements through the cooperation of the first metal piece and the first grounding post.

[0017] In a possible design, the electronic device further includes a metal shrapnel. The second grounding post is connected to the grounding end through the metal shrapnel, which can ensure the reliability of the connection between the second grounding post and the circuit board, and is also conducive to improving the electrostatic discharge effect through the cooperation of the metal shrapnel and the second grounding post.

[0018] In a possible design, the accommodating cavity includes a main body and a flanging. The flanging is circumferentially connected to the edge of the main body around the main body. The flanging is connected to the housing, and the main body protrudes from the surface of the housing away from the accommodating cavity. A metal layer is provided on the surface of the main body close to the housing. A space capable of accommodating components can be enclosed between the main body and the flanging. For example, at least part of the camera module can be accommodated in this space. That is to say, in some embodiments, the accommodating cavity with the above structure can form a camera metal decorative part, which can be used to protect and decorate the camera. At the camera metal decorative part, the electronic device has a relatively large space in the thickness direction. By using this space, the arrangement of structures such as the feeding post and grounding post of the antenna can be realized without developing additional space inside the electronic device, which is conducive to realizing the design of a relatively large antenna within the limited space of the electronic device.

[0019] In a possible design, the main body is made of a metal material, and the metal layer is the surface of the main body close to the housing. That is to say, the whole main body can be used as a radiator to realize the radiation of energy. In addition, the flanging can also be made of a metal material, and the flanging and the main body can be integrally formed, so that the accommodating cavity becomes a metal cavity. Of course, in some embodiments, the flanging can also be made of a non-metal material such as plastic.

[0020] In a possible design, the main body is made of a plastic material, and the metal layer is a metal sheet, and the metal sheet is fixed on the surface of the main body close to the housing. Among them, the metal layer can be a metal thin sheet with good conductivity such as a copper sheet, and can be fixed on the main body through the SMT process. In some embodiments, the metal layer can also be formed on the surface of the main body close to the housing through processes such as electroplating. In addition, the flanging can also be made of the same material as the main body, so that the main body and the flanging can be integrally formed, which is convenient for processing and manufacturing.

[0021] In a possible design, the accommodating cavity is a camera metal decorative part, and a camera hole is provided on the camera metal decorative part. Among them, the camera metal decorative part can be used to protect and decorate the camera. At the camera metal decorative part, the electronic device has a relatively large space in the thickness direction. By using this space, the arrangement of structures such as the feeding post and grounding post of the antenna can be realized without developing additional space inside the electronic device, which is conducive to realizing the design of a relatively large antenna within the limited space of the electronic device.

[0022] In a possible design, the center frequency of the radio frequency signal fed into the metal layer by the feeding network through the feeding post is 1.17 GHz. That is to say, the feeding network can feed a radio frequency signal in the L5 (center frequency of 1.17 GHz) band into the accommodating cavity through the feeding post, so that the metal layer forms the radiator of the L5 antenna. Thus, by multiplexing the metal layer of the accommodating cavity on the electronic device as the radiator, the occupation of the space inside the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized within the limited space of the electronic device. At the same time, the L5 antenna formed by multiplexing the metal layer of the accommodating cavity is an independent antenna and does not need to share the radiator with other antennas, and the L5 antenna can obtain good antenna efficiency and has better radiation performance.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0025] Figure 1 Structural schematic diagram of the electronic device provided by the embodiment of the present application;

[0026] Figure 2 Side view of the electronic device provided by the embodiment of the present application;

[0027] Figure 3 For Figure 2 Partial cross-sectional view at A in

[0028] Figure 4 Bottom view of the accommodating cavity provided by the embodiment of the present application;

[0029] Figure 5 Side view of the accommodating cavity provided by the embodiment of the present application;

[0030] Figure 6 Top view of the first metal part provided by the embodiment of the present application;

[0031] Figure 7 Structural schematic diagram of the first matching circuit provided by the embodiment of the present application;

[0032] Figure 8 Top view of the second matching circuit provided by the embodiment of the present application.

[0033] Reference Signs:

[0034] 1 - housing;

[0035] 2 - accommodation cavity;

[0036] 21 - body;

[0037] 22 - flanging;

[0038] 23 - feeding post;

[0039] 24 - grounding post;

[0040] 241 - first grounding post;

[0041] 242 - second grounding post;

[0042] 25 - camera hole;

[0043] 3 - first matching circuit;

[0044] 31 - first metal part;

[0045] 311 - extension section;

[0046] 312 - first connection section;

[0047] 313 - second connection section;

[0048] 4 - second matching circuit;

[0049] 5 - circuit board;

[0050] 6 - camera module. Detailed implementation manners

[0051] For a better understanding of the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0052] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0054] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0055] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plurality" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] An antenna is a device used to receive / send electromagnetic waves and is widely used in electronic products such as mobile phones. For antennas covering different operating frequency bands, the sizes of the antennas are also different. For example, the L5 (center frequency of 1.17 GHz) antenna has a lower frequency, a longer wavelength, and less free-space attenuation than the L1 (center frequency of 1.57 GHz) antenna. However, the L5 antenna also has a relatively larger size. In small electronic products such as mobile phones, due to the more compact space inside the mobile phone, the large size of the L5 antenna makes it difficult to design a better-performing L5 antenna in a limited space. In order to arrange the L5 antenna in an electronic device, it is generally considered to design the L5 antenna and other antennas into a shared-body antenna. Exemplarily, the L5 antenna can be designed in a shared-body form with the MHB (1.7 GHz - 2.7 GHz) antenna, that is, the L5 antenna and the MHB antenna share a radiator, or the L5 antenna serves as a radiation branch of the MHB antenna. Although this design form can reduce the overall length of the antenna, it will seriously affect the antenna efficiency of the L5 antenna and reduce the radiation performance of the antenna.

[0057] Therefore, an embodiment of this application provides an electronic device, which can be a mobile phone, a tablet computer, a laptop computer, a smart home device, a smart bracelet, a smart watch, a smart helmet, a smart glasses, etc. The electronic device can also be a handheld device with wireless communication functions, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future evolved public land mobile network (PLMN), etc. The embodiments of this application do not limit this. Figure 1 Exemplarily, the electronic device provided by the embodiment of this application is illustrated, taking the electronic device as a mobile phone for explanation.

[0058] As shown Figure 2 in the side view of the electronic device provided by the embodiment of the present application, Figure 3 and Figure 2 the partial cross-sectional view at A in Figure 2 and Figure 3 , the electronic device provided by the embodiment of the present application includes a housing 1, a feeding network, and a circuit board 5. Among them, the housing 1 can be the outermost shell part of the electronic device and can be directly touched by the user. Exemplarily, for a mobile phone as the electronic device, the housing 1 can be structural parts such as a battery cover, a back shell, etc. The housing 1 can be made of metal material, and of course, it can also be made of plastic material with a certain hardness, which can play a role in protecting and supporting many components inside the electronic device.

[0059] Among them, referring to Figure 3 , a receiving cavity 2 is provided on the housing 1, and at least part of the receiving cavity 2 is provided with a metal layer. In some embodiments, the receiving cavity 2 can be a non-closed cavity structure surrounded by metal material, so that the receiving cavity 2 forms a metal cavity, and the metal layer is at least part of the inner surface of the receiving cavity 2. In some embodiments, the receiving cavity 2 can also be a non-closed cavity structure surrounded by non-metal materials such as plastic, and the metal layer can be a metal sheet structure that can be fixed on at least part of the inner surface of the receiving cavity 2. Among them, the inner surface of the receiving cavity 2 is the surface of the receiving cavity 2 facing the housing 1. The receiving cavity 2 can be an independently processed part and can be assembled onto the housing 1. Or the receiving cavity 2 can also be a structure integrally formed with the housing 1. Exemplarily, for an electronic device with a camera function, the receiving cavity 2 can be a camera metal decorative part installed on the housing 1, and this camera metal decorative part can play a role in protecting and decorating the camera module 6. Generally speaking, there is a certain space inside the camera metal decorative part, and at least part of the camera module 6 can be accommodated in this space. Among them, a camera hole 25 can be provided on the camera metal decorative part, and the camera in the camera module 6 can correspond to the camera hole 25 for photography.

[0060] Among them, the metal layer of the receiving cavity 2 can be used as a radiator of the antenna to receive / transmit electromagnetic waves. Referring to Figure 3, a feeding post 23 and a grounding post 24 can be integrally formed on the accommodating cavity 2. The feeding post 23 is connected to the feeding network, and the feeding network can include a power divider, a phase shifter, a coupler, a filter, etc., to achieve functions such as impedance matching, amplitude and phase control, and harmonic suppression. The feeding of the metal layer can be realized through the feeding post 23. In the embodiment of the present application, the feeding network can feed a radio frequency signal in the L5 (center frequency is 1.17 GHz) band into the accommodating cavity 2 through the feeding post 23, so that the metal layer of the accommodating cavity 2 forms a radiator of the L5 antenna. Thus, by reusing the metal layer of the accommodating cavity 2 on the electronic device as a radiator, the occupation of the space inside the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized within the limited space of the electronic device. At the same time, the L5 antenna formed by reusing the metal layer of the accommodating cavity 2 is an independent antenna and does not need to share the radiator with other antennas. The L5 antenna can obtain good antenna efficiency and has better radiation performance. In addition, the feeding network can also feed radio frequency signals in other bands into the metal layer, and the metal layer can form an antenna capable of covering other working bands, which is not limited in this embodiment.

[0061] Among them, the feeding post 23 and the grounding post 24 can be integrally formed during the manufacturing process of the accommodating cavity 2, so that the accommodating cavity 2 including the feeding post 23 and the grounding post 24 forms an integral structure, thereby ensuring the continuity of the structure and avoiding the generation of connection gaps at the electrically connected parts between the accommodating cavity 2, the feeding post 23 and the grounding post 24, which may affect the distribution of antenna resonance, facilitating the configuration of an antenna with expected performance and achieving the expected radiation effect. At the same time, integrally forming the accommodating cavity 2, the feeding post 23 and the grounding post 24 can realize the miniaturization of the antenna structure, ensure the reliability of the structure, and facilitate the assembly onto the housing 1.

[0062] In some embodiments, as described above, the accommodating cavity 2 can be a camera metal decorative part, and the radiator can reuse the camera metal decorative part. This may cause a large amount of static electricity to be generated in some application scenarios of the camera metal decorative part, such as in a dry environment or when friction generates electricity. If the static electricity cannot be released in time, it will cause great damage to the camera module 6 and also cause discomfort to the user, affecting the use experience.

[0063] Therefore, referring to Figure 3, the ground terminal of the circuit board 5 provided in this embodiment needs to be connected to the ground post 24, so that the static electricity on the metal layer can be conducted to the ground terminal of the circuit board 5 through the ground post 24 in time for release, to ensure the normal operation of the camera module 6 and improve the user experience at the same time. In some embodiments, the circuit board 5 may be a printed circuit board (PCB), such as an 8-layer, 10-layer or 12-to-14-layer board with 8, 10, 12, 13 or 14 layers of conductive materials, or components separated and electrically insulated by dielectric layers or insulating layers such as fiberglass, polymers, etc. In one embodiment, the circuit board 5 includes a dielectric substrate, a ground layer and a trace layer, and the ground layer therein is the aforementioned ground terminal, and the ground layer may specifically be a return ground signal line arranged in the circuit board 5, and the trace layer and the ground layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, an input button, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. may be mounted on the circuit board 5 or connected to the circuit board 5; or electrically connected to the trace layer and / or the ground layer in the circuit board 5. For example, a radio frequency source is provided on the trace layer. In some embodiments, the radio frequency source may be a radio frequency signal line, that is, an input or output signal line led out from the circuit board 5 through a chip port, and the radio frequency signal line may be a signal line for transmitting radio frequency signals in the L5 frequency band and can be electrically connected to the feed post 23.

[0064] In some embodiments, referring to Figure 3 , the accommodating cavity 2 may include a body 21 and a flanging 22, and the flanging 22 may be circumferentially connected to the edge of the body 21 around the body 21. In some embodiments, the flanging 22 and the housing 1 may be connected by processes such as welding and hot melting, or may be integrally formed. One end of the flanging 22 away from the body 21 may be connected to the housing 1, and the body 21 protrudes from the surface of the housing 1. A metal layer may be provided on the surface of the body 21 close to the housing 1. A space capable of accommodating devices may be enclosed between the body 21 and the flanging 22. For example, at least a part of the camera module 6 may be accommodated in this space. That is to say, in some embodiments, the accommodating cavity 2 with the above structure may constitute a camera metal decoration, which can be used to protect and decorate the camera. At the camera metal decoration, the electronic device has a relatively large space in the thickness direction, and this space can be used to arrange structures such as the feed post 23 and the ground post 24 of the antenna, without developing additional space inside the electronic device, which is beneficial to realizing the design of a relatively large antenna within the limited space of the electronic device.

[0065] In some embodiments, the body 21 may be made of metal material, and the surface of the body 21 close to the housing 1 may be a metal layer. That is to say, the body 21 as a whole can be used as a radiator to radiate energy. In addition, the flange 22 may also be made of metal material, and the flange 22 and the body 21 can be integrally formed. For example, the flange 22 and the body 21 can be formed by bending or stamping processes using a metal plate, a metal sheet or other materials, so that the accommodating cavity 2 enclosed by the body 21 and the flange 22 is formed into a metal cavity. In the embodiment of the present application, the grounding post 24 and the feeding post 23 may be connected to the flange 22 or the body 21. The feeding post 23 and the grounding post 24 can be flexibly arranged on the flange 22 or the body 21 according to the actual structural layout of the electronic device, the performance requirements of the antenna, and the requirements of electrostatic discharge. In some embodiments, the body 21 serves as the radiator of the antenna, and the feeding post 23 and the grounding post 24 can be directly connected to the body 21, so that the body 21 can be directly fed through the feeding post 23, and the static electricity on the body 21 can be released through the grounding post 24.

[0066] In some embodiments, the body 21 may be made of plastic material, and the metal layer may be a metal sheet, which may be fixed to the surface of the body 21 close to the housing 1. The metal layer may be a metal sheet with good conductivity such as a copper sheet, which may be fixed to the body 21 by surface mounting technology (SMT). In some embodiments, the metal layer may also be formed on the surface of the body 21 close to the housing 1 by electroplating or other processes. In addition, the flange 22 may also be made of the same material as the body 21, so that the body 21 and the flange 22 may be integrally formed, which is convenient for processing and manufacturing.

[0067] In the embodiment of the present application, the metal layer on the accommodating cavity 2 may have a relatively large area. The distribution of static electricity may be different at different positions of the metal layer. Therefore, the area where static electricity is distributed needs to release the static electricity through the grounding column 24. Figure 4 FIG. 2 is a bottom view of the accommodation chamber 2 provided in an embodiment of the present application. Figure 5 This is a side view of the accommodation chamber 2 provided in the embodiment of the present application, referring to Figure 4 and Figure 5 , a plurality of grounding posts 24 may be provided, and the plurality of grounding posts 24 may be spaced apart. Among them, two, three, four or more grounding posts 24 may be provided, and the plurality of grounding posts 24 may be distributed in different position areas on the metal layer, so as to realize the release of static electricity at different positions of the metal layer. In some embodiments, the position of the grounding post 24 may be specifically set according to the position of the static electricity distribution on the metal layer.

[0068] In some embodiments, while referring to Figure 4 and Figure 5, the grounding post 24 may include a first grounding post 241 and a second grounding post 242. The distance between the first grounding post 241 and the feeding post 23 may be less than the distance between the second grounding post 242 and the feeding post 23, and the equivalent inductance value of the first grounding post 241 is greater than that of the second grounding post 242. Among them, although the electrostatic discharge can be achieved by setting the first grounding post 241 and the second grounding post 242, it will also affect the performance of the antenna. Therefore, it is necessary to configure the equivalent inductance values of the first grounding post 241 and the second grounding post 242 to balance the functions of electrostatic discharge and the performance of the antenna at the same time. In the embodiment of the present application, the first grounding post 241 at a position closer to the feeding post 23 is equivalent to a larger inductance, which can increase the radiation aperture of the antenna, and can not only meet the function of electrostatic discharge, but also enable the antenna to obtain good radiation performance. By making the second grounding post 242 at a position farther from the feeding post 23 equivalent to a smaller inductance, electrostatic discharge can be achieved without affecting the antenna performance. Thus, by configuring the equivalent inductance values of the first grounding post 241 and the second grounding post 242, the functions of electrostatic discharge and the performance of the antenna are balanced at the same time. Therefore, in the embodiment of the present application, by making the equivalent inductance value of the first grounding post 241 greater than that of the second grounding post 242, the static electricity in the area where the static electricity distribution is relatively concentrated can be effectively released to the ground, ensuring the normal operation of the camera module 6.

[0069] In some embodiments, referring to Figure 5 , one end of the first grounding post 241 and / or the second grounding post 242 away from the body 21 may be connected to the circuit board through a first matching circuit. Among them, the matching circuit connected to the first grounding post 241 and the matching circuit connected to the second grounding post 242 may be the same or different, and may be specifically matched according to the actual grounding and electrostatic discharge requirements.

[0070] In some embodiments, the electronic device may include a first matching circuit, and the grounding post 24 may be connected to the grounding end through the first matching circuit. The first matching circuit may include a first metal part 31. Exemplarily, as Figure 6 shows a top view of the first metal part 31 provided by the embodiment of the present application. Referring to Figure 6 , the first metal part 31 may be a metal sheet structure, such as a copper sheet, with good electrical conductivity. The first metal part 31 may be an integrally formed metal sheet.

[0071] In some embodiments, for the convenience of description, taking Figure 5 the first grounding post 241 shown as an example, one end of the first metal part 31 may be connected to the first grounding post 241, and the other end of the first metal part 31 may be connected to the grounding end on the circuit board. The first metal part 31 may be equivalent to an inductance element, so that it can meet the requirements of antenna performance while also meeting the requirements of static electricity release.

[0072] In some embodiments, the electronic device may further include a metal shrapnel (not shown in the figure). The first metal member 31 may be electrically connected to the circuit board through a metal connection member such as a metal shrapnel or a screw, so as to ensure the reliability of the electrical connection between the first metal member 31 and the circuit board. Of course, in some other embodiments, the metal shrapnel may also be replaced by a metal connection member such as a screw. Such a metal connection member has both the function of firm connection and good electrical conductivity.

[0073] In some embodiments, the first metal member 31 may also be electrically connected to the first grounding post 241 through the aforementioned metal shrapnel or a metal connection member such as a screw, so as to also ensure the reliability of the electrical connection between the first metal member 31 and the first grounding post 241. In some embodiments, the first metal member 31 may not be connected to the circuit board for grounding, but may be connected to a grounding metal bracket in an electronic device such as a mobile phone for grounding.

[0074] In some embodiments, referring to Figure 6 , the first metal member 31 may include a first connection section 312, a second connection section 313, and an extension section 311. For the sake of convenience of description, the two ends of the first connection section 312 and the second connection section 313 in the length direction may be defined as the first end and the second end respectively. The two ends of the extension section 311 are respectively connected to the first end of the first connection section 312 and the first end of the second connection section 313, so that the shape of the first metal member 31 is C-shaped. The second end of the first connection section 312 is connected to the first grounding post 241, and the second end of the second connection section 313 is connected to the grounding end. Among them, the second ends of the first connection section 312 and the second connection section 313 are not connected to the extension section 311. The first metal member 31 having such a structure can occupy a smaller space, and at the same time, the first metal member 31 can have a larger physical length between the first grounding post 241 and the grounding end, and an inductor that can meet the antenna performance requirements and the electrostatic discharge requirements can be configured. Among them, the first metal member 31 may be an integrally formed structure, so as to facilitate the processing and manufacturing of the first metal member 31, ensure the reliability of the structure, and also facilitate the assembly and connection.

[0075] In some embodiments, the first matching circuit may further include a matching network composed of elements such as a capacitor and / or an inductor and / or a radio frequency switch. Referring to Figure 7 , optionally, referring to Figure 7 (a), the matching network may include a capacitor, and the capacitor may be connected in parallel between the grounding post 24 and the grounding end of the circuit board 5. Optionally, referring to Figure 7 (b), the matching network may include an inductor, and the inductor may be connected in series between the grounding post 24 and the grounding end of the circuit board 5. Optionally, the matching network may include a capacitor and an inductor. Referring to Figure 7(c), the capacitor and the inductor can be connected in series; refer to Figure 7 (d), the capacitor and the inductor can also be connected in parallel and are connected between the grounding post 24 and the grounding end of the circuit board 5 in a corresponding series or parallel manner. Optionally, the matching network can also adopt a radio frequency switch, and the radio frequency switch can include multiple branches. Each branch can be configured with a capacitor or an inductor and can be connected to the circuit through switch switching.

[0076] Among them, the matching network composed of the foregoing capacitor and / or inductor and / or radio frequency switch and other components can be integrated on the circuit board 5. In some embodiments, the matching network can be soldered on the circuit board 5, and one end of the matching network is connected to the grounding end of the circuit board 5, and the other end of the matching network and the corresponding grounding post 24 can be electrically connected through a metal connecting piece such as a metal shrapnel or a screw.

[0077] As described above, there can be multiple grounding posts 24, which can be the first grounding post 241 and the second grounding post 242 described above, or other grounding posts with grounding and electrostatic discharge functions. Each grounding post can be configured with a corresponding capacitor and / or inductor and / or radio frequency switch according to the actual situation. Among them, the specific circuit configuration form of the first matching circuit can be designed according to the antenna performance requirements and the electrostatic discharge requirements, so that the design of the antenna has strong flexibility.

[0078] In some embodiments, the foregoing first metal part 31 can also be combined with the above-mentioned matching network for application. Among them, the matching network can be soldered on the circuit board 5, and one end of the circuit can be electrically connected to the grounding end of the circuit board 5, and the other end of the circuit can be electrically connected to the first metal part 31 through a metal connecting piece such as the foregoing metal shrapnel or a screw. It should be noted that the electrical connection method between the first metal part 31 and the first grounding post 241 can refer to the relevant descriptions of other embodiments of this application and will not be elaborated here.

[0079] In addition, for the second grounding post 242, the connection manner between the second grounding post 242 and the circuit board 5 can be similar to the above-mentioned connection manner between the first grounding post 241 and the circuit board 5, that is, a corresponding first matching circuit can also be configured for the second grounding post 242, so that the second grounding post 242 is connected to the corresponding matching circuit through a metal connecting piece such as a metal shrapnel or a screw. In addition, in some embodiments, the second grounding post 242 can also be directly electrically connected to the grounding end of the circuit board or a grounding metal bracket in an electronic device such as a mobile phone through a metal shrapnel or a metal connecting piece to achieve grounding without matching a corresponding matching circuit.

[0080] In addition, for the second grounding post 242, the connection manner between the second grounding post 242 and the circuit board 5 can be similar to the above-mentioned connection manner between the first grounding post 241 and the circuit board 5, and will not be elaborated here.

[0081] In some embodiments, the second grounding post 242 can also be connected to the grounding end of the circuit board 5 through a metal elastic sheet, thereby ensuring the reliability of the connection between the second grounding post 242 and the circuit board 5, and at the same time facilitating the improvement of the electrostatic discharge effect through the cooperation of the metal elastic sheet and the second grounding post 242. Among them, the metal elastic sheet can be fixedly connected to the circuit board 5 by processes such as welding.

[0082] In some embodiments, when there are one or more grounding posts 24, each grounding post can also be considered to be connected to a matching circuit according to the actual situation. Among them, the matching circuit can be a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the matching circuit has the functions of impedance matching and / or frequency tuning. In this application, the matching circuit can improve the effect of electrostatic discharge to the ground by matching the impedance.

[0083] In some embodiments, the electronic device can also include a second matching circuit, and the feeding post 23 can be connected to the feeding network through the second matching circuit. Among them, the second matching circuit is a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the second matching circuit can have similar functions to the first matching circuit, that is, the second matching circuit has the functions of impedance matching and / or frequency tuning.

[0084] In some embodiments, the second matching circuit can include a second metal part. Exemplarily, as Figure 8 shown is a top view of the second metal part provided by the embodiment of the present application. Referring to Figure 8 , the second metal part can be an independently processed and manufactured part, specifically a metal sheet structure, such as a copper sheet, with good electrical conductivity. One end of the second metal part is connected to the feeding post 23, and the other end of the second metal part is connected to the feeding network. Exemplarily, the second metal part can be connected to the radio frequency signal line for transmitting the radio frequency signal in the L5 frequency band in the feeding network. In the direction perpendicular to the thickness direction of the electronic device, this integrated metal sheet has a certain length dimension. For the case where there is no suitable return area and feeding area at the position directly opposite to the feeding post 23, the transfer can be realized through this metal sheet, which is beneficial to the more flexible design of the feeding post 23 and the feeding and grounding positions, and can meet the structural layout requirements of different electronic devices.

[0085] In some embodiments, one end of the second metal part can also be electrically connected to the feeding post 23 through an elastic sheet or a screw, and the other end of the second metal part can also be electrically connected to the feeding network through an elastic sheet or a screw.

[0086] In some embodiments, the second metal part can be an integrally formed structure, which can facilitate the processing and manufacturing of the second metal part, ensure the reliability of the structure, and also facilitate the assembly and connection.

[0087] In some embodiments, the second matching circuit may also include a matching network composed of components such as capacitors and / or inductors and / or RF switches. Such a second matching circuit may have a similar structural form to the first matching circuit. Specifically, the capacitors, inductors, or RF switches can be configured according to the feeding and radiation requirements of the antenna. Exemplarily, a capacitor or an inductor can be configured alone, or both a capacitor and an inductor can be configured simultaneously and connected in series or parallel. An RF switch can also be used. The RF switch can include multiple branches, and each branch can be configured with a capacitor or an inductor and can be switched and connected to the circuit through the switch. No specific limitation is made in this embodiment, so that the design of the antenna can have strong flexibility.

[0088] In some embodiments, the feeding post 23 can also be connected to the feeding network of the circuit board 5 through a metal shrapnel. Exemplarily, the feeding post 23 can be electrically connected to the metal shrapnel, and the metal shrapnel can be electrically connected to the feeding network through screws or welded to the feeding network for electrical connection.

[0089] In some embodiments, the second grounding post 242 can also be grounded through the second matching circuit to the grounding end of the circuit board or a grounding metal bracket in an electronic device such as a mobile phone.

[0090] In some embodiments, the equivalent inductance value of the first matching circuit can be less than 30 nH, and the equivalent inductance value of the second matching circuit can be less than 5 nH. Among them, when the equivalent inductance values of the first matching circuit and the second matching circuit meet the above ranges, the electrostatic discharge of the metal layer on the accommodation cavity 2 such as the camera metal decorative part of most electronic devices can be satisfied.

[0091] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic device, characterized in that, it includes: a housing, on which a receiving cavity is provided, at least part of the receiving cavity is provided with a metal layer, a feeding column and a grounding column are integrally formed on the receiving cavity, and the feeding column and the grounding column are electrically connected to the metal layer; a feeding network, which is connected to the feeding column and is used to feed the metal layer through the feeding column; a circuit board, the grounding end of which is electrically connected to the grounding column and is used to release static electricity on the metal layer.

2. The electronic device according to claim 1, characterized in that, it further includes a first matching circuit, and the grounding column is electrically connected to the grounding end through the first matching circuit.

3. The electronic device according to claim 2, characterized in that, the first matching circuit includes a first metal part, one end of the first metal part is electrically connected to the grounding column, and the other end of the first metal part is electrically connected to the grounding end.

4. The electronic device according to claim 3, characterized in that, the first metal part includes a first connection section, a second connection section and an extension section, both ends of the extension section are respectively connected to the first end of the first connection section and the first end of the second connection section, so that the shape of the first metal part is C-shaped, the second end of the first connection section is connected to the grounding column, and the second end of the second connection section is connected to the grounding end.

5. The electronic device according to claim 2, characterized in that, the first matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch.

6. The electronic device according to any one of claims 2-5, characterized in that, it further includes a second matching circuit, and the feeding column is connected to the feeding network through the second matching circuit.

7. The electronic device according to claim 6, characterized in that, the second matching circuit includes a second metal part, one end of the second metal part is electrically connected to the feeding column, and the other end of the second metal part is electrically connected to the feeding network.

8. The electronic device according to claim 6, characterized in that, the second matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch.

9. The electronic device according to any one of claims 1-8, characterized in that, a plurality of grounding columns are provided, and the plurality of grounding columns are spaced apart from each other.

10. The electronic device according to any one of claims 6-8, characterized in that, the grounding column includes a first grounding column and a second grounding column, the distance between the first grounding column and the feeding column is less than the distance between the second grounding column and the feeding column, and the equivalent inductance value of the first grounding column is greater than the equivalent inductance value of the second grounding column.

11. The electronic device according to claim 10, characterized in that, the equivalent inductance value of the first matching circuit is less than 30 nH, and the equivalent inductance value of the second matching circuit is less than 5 nH.

12. The electronic device according to claim 10, characterized in that, one end of the first metal part being electrically connected to the grounding column includes: one end of the first metal part is electrically connected to the first grounding column.

13. The electronic device according to claim 10, wherein, it further includes a metal shrapnel, and the second grounding post is connected to the grounding end through the metal shrapnel.

14. The electronic device according to any one of claims 1 - 13, wherein, the accommodating cavity includes a body and a flanging, and the flanging is circumferentially connected to the edge of the body around the body; the flanging is connected to the housing, and the body protrudes from the surface of the housing away from the accommodating cavity; the metal layer is disposed on the surface of the body close to the housing.

15. The electronic device according to claim 14, wherein, the body is made of a metal material, and the metal layer is the surface of the body close to the housing.

16. The electronic device according to claim 14, wherein, the body is made of a plastic material, the metal layer is a metal sheet, and the metal sheet is fixed on the surface of the body close to the housing.

17. The electronic device according to claim 14, wherein, the accommodating cavity is a camera metal decorative part, and a camera hole is provided on the camera metal decorative part.

18. The electronic device according to any one of claims 1 - 17, wherein, the center frequency of the radio frequency signal fed into the metal layer by the feeding network through the feeding post is 1.17 GHz.

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