Electronic device

Abstract

Electronic equipment comprises a metal supporting piece, a screen module and a magnetic piece. The metal support member is provided with an antenna and at least one grounding part. The screen module is connected to the metal supporting piece, and a first hollow area is formed between at least part of the screen module and the metal supporting piece; the screen module comprises a metal layer, the projection of at least part of the metal layer in the thickness direction of the electronic equipment covers the first hollow area, and at least the other part of the metal layer is electrically connected with the grounding part. At least part of the magnetic piece is arranged in the first hollow area and is close to the grounding part, and the magnetic piece is connected to the screen module and / or the metal supporting piece. The magnetic part is arranged in the first hollow area, an existing electric connection scheme does not need to be adopted, limitation of the welding technology is avoided, thinning of the middle frame can be achieved, meanwhile, the magnetic part can be arranged on components such as a battery which cannot be machined through the welding technology, and the application range is wide.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device. Background Art

[0002] The antenna is a necessary component for realizing the wireless communication function of the terminal product, which can realize the transmission and reception of signals. The terminal product has a compact structure and a high degree of integration, and the antenna needs to coexist with the surrounding environment in a limited space. For example, the terminal product may include a screen and a middle frame, and the antenna may be arranged on the middle frame. A cavity is usually formed between the screen and the middle frame. The middle frame is generally made of metal material, and the screen includes a metal layer. Therefore, the cavity formed between the middle frame and the screen will bring about a cavity effect, that is, when the antenna radiates into the free space, the electromagnetic wave will be absorbed by the cavity, reducing the omnidirectional radiation power and omnidirectional sensitivity of the antenna.

[0003] The prior art generally uses metal conductors to electrically connect the metal layers of the middle frame and the screen respectively to eliminate the cavity effect. However, when achieving electrical connection through metal conductors, a spot welding process is usually required. The spot welding process requires that the metal to be welded needs to have a large thickness, which is not conducive to the design requirements of thin terminal products. In addition, if a cavity is formed between the screen and the battery, the spot welding process cannot be applied to the battery, resulting in the inability to solve the cavity effect. Utility Model Content

[0004] In view of this, the present application provides an electronic device to solve the problem in the above-mentioned prior art that a cavity effect is generated between the screen and the middle frame or the battery, resulting in reduced antenna performance.

[0005] The present application provides an electronic device, which includes: a metal support, a screen module and a magnetic member. The metal support is provided with an antenna and at least one grounding portion. The screen module is connected to the metal support, and a first hollow area is formed between at least part of the screen module and the metal support; the screen module includes a metal layer, and at least part of the metal layer is projected in the thickness direction of the electronic device to cover the first hollow area, and at least another part of the metal layer is electrically connected to the grounding portion. At least part of the magnetic member is arranged in the first hollow area and close to the grounding portion, and the magnetic member is connected to the screen module and / or the metal support.

[0006] The present application arranges magnetic parts in the first hollow area, eliminating the need for existing electrical connection solutions and being unrestricted by welding processes, thereby achieving a thinner middle frame. At the same time, magnetic parts can be arranged on components such as batteries that cannot be processed by welding processes. In other words, magnetic parts can be used in various spaces that may affect antenna performance and have a wider range of applications.

[0007] In a possible implementation, the screen module includes a body and a flexible circuit board, wherein a circuit layer is disposed in the body, one end of the flexible circuit board is electrically connected to the circuit layer, and at least part of the flexible circuit board extends out of the body, is bent between the body and the metal support, and extends into the first hollow area. The magnetic component is connected to a portion of the flexible circuit board located in the first hollow area. The material and surface features of the flexible circuit board are more likely to be reliably connected to the magnetic component. For example, the surface roughness of the flexible circuit board is greater, and its material is more likely to be combined with the magnetic component, thereby ensuring the connection reliability of the magnetic component.

[0008] In a possible implementation, a recessed portion is provided on the metal support, and the opening direction of the recessed portion is oriented toward the screen module. The electronic device also includes a battery, which is arranged in the recessed portion, and a second hollow area is formed between the battery and the screen module, and at least part of the magnetic member is arranged in the second hollow area. Among them, the battery includes a metal shell, and the second hollow area between the metal shell and the metal layer of the screen module can be approximately equivalent to a metal cavity. When the antenna is arranged at a position close to the battery on the metal support, the electromagnetic energy radiated by the antenna will also cause electromagnetic oscillation in the second hollow area, and the second hollow area absorbs part of the energy received and sent by the antenna, resulting in a reduction in the energy that the antenna can receive or radiate to the outside of the electronic device. To this end, in this embodiment, at least part of the magnetic member can be arranged in the second hollow area. By arranging the magnetic member in the second hollow area, the magnetic member can move the resonant frequency of the electromagnetic oscillation in the second hollow area out of the set working frequency band, and at the same time can reduce the intensity of electromagnetic oscillation, thereby reducing the energy allocated from the antenna to the second hollow area in the set working frequency band, and ensuring the transmission quality of the antenna signal.

[0009] In one possible implementation, the magnetic member is connected to one of the screen module or the battery, and a gap is maintained between the magnetic member and the other. When the temperature of the battery rises, it will expand to a certain extent. If the two ends of the magnetic member are respectively in contact with the screen module and the battery surface, the battery will lift up the screen module after expansion, causing the screen module to bulge locally, crack and other problems. For this reason, in this embodiment, the magnetic member can be connected only to one of the screen module and the battery, and a gap is maintained between the magnetic member and the other, so that a certain space can be reserved for the expansion of the battery through the gap, avoiding the battery from exerting a squeezing force on the screen module when it heats up and expands.

[0010] In a possible implementation, the gap is greater than or equal to 0.2 mm, thereby ensuring that the magnetic component has a good ability to eliminate electromagnetic shocks while also preventing the battery from squeezing the screen module after it expands due to heat.

[0011] In a possible implementation, the grounding portion includes a first grounding area and a second grounding area, and the first grounding area and the second grounding area are respectively located on both sides of the recessed portion. The magnetic member is disposed in the second hollow area and close to the first grounding area; and / or the magnetic member is disposed in the second hollow area and close to the second grounding area. Thus, the arrangement position of the magnetic member can be made more flexible.

[0012] In a possible implementation, the magnetic member is bonded to the screen module and / or the battery; or, the magnetic member is formed on the screen module and / or the battery by a spraying process. In other words, this embodiment does not need to adopt the existing electrical connection solution, is not limited by the welding process, and can realize the arrangement of magnetic members on the battery, thereby eliminating electromagnetic oscillations in the second hollow area in a wider range of scenarios and improving the antenna radiation performance.

[0013] In a possible implementation, the thickness of the magnetic member is greater than or equal to 0.03 mm, and the area is greater than or equal to 10 mm. 2 Among them, the thickness and area of ​​the magnetic component are within the above range, which can ensure that the magnetic component can effectively reduce the electromagnetic oscillation in the hollow area and ensure the radiation performance of the antenna.

[0014] In one possible implementation, the real part of the magnetic permeability of the magnetic component is greater than or equal to 5, which can ensure that the magnetic component can move the resonant frequency of the electromagnetic oscillation in the hollow area out of the set working frequency band, reduce the energy loss of the antenna when working in the set working frequency band, and ensure the antenna radiation performance.

[0015] In one possible implementation, the magnetic part is bonded to the screen module and / or the metal support part, thereby facilitating the assembly and adjustment of the magnetic part; or, the magnetic part is formed on the screen module and / or the metal support part through a spraying process to form a magnetic part with a certain thickness, thereby ensuring the setting accuracy and consistency of the magnetic part.

[0016] In a possible implementation, one or more magnetic members are provided. When multiple magnetic members are provided, multiple magnetic members are arrayed or discretely distributed between the metal support member and the screen module. Thus, the arrangement of the magnetic members is highly flexible and can meet the arrangement requirements of various different machine environments.

[0017] In a possible implementation, the magnetic element is a magnetic oxide film, a magnetic metal film or a magnetic semiconductor film. Magnetic elements of these materials can reduce electromagnetic oscillations in the hollow area and ensure the radiation performance of the antenna.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 The cross-sectional view at AA in FIG.

[0022] Figure 3 A schematic diagram of a resonant circuit equivalent to the first hollow region provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of magnetic field distribution on an electronic device provided in an embodiment of the present application;

[0024] Figure 5 In one embodiment of the present application, Figure 1 Sectional view at the middle BB;

[0025] Figure 6 In one embodiment of the present application, Figure 1 Sectional view at CC;

[0026] Figure 7 A schematic diagram comparing the radiation efficiency curves of an antenna provided in an embodiment of the present application before and after a magnetic member is arranged in the second hollow region;

[0027] Figure 8 In another embodiment of the present application, Figure 1 Sectional view at CC;

[0028] Fig. 9 A schematic diagram comparing radiation efficiency curves of an antenna provided in another embodiment of the present application before and after a magnetic member is arranged in the second hollow region;

[0029] Fig.10 In another embodiment of the present application, Figure 1 Sectional view at CC;

[0030] Fig.11A schematic diagram comparing radiation efficiency curves of an antenna provided in yet another embodiment of the present application before and after a magnetic member is disposed in the second hollow region.

[0031] Reference numerals:

[0032] 1-Metal support;

[0033] 11- grounding part;

[0034] 11a-First contact area;

[0035] 11b - Second contact area;

[0036] 111- grounding point;

[0037] 12-depression;

[0038] 13-middle frame;

[0039] 14-Border;

[0040] 2-Screen module;

[0041] 21-Ontology;

[0042] 22-Flexible circuit board;

[0043] 3-Magnetic parts;

[0044] 4- first hollow area;

[0045] 5-Battery;

[0046] 6- Second hollow area;

[0047] 7- Mainboard;

[0048] 8- rear cover;

[0049] G-gap;

[0050] Z-thickness direction. DETAILED DESCRIPTION

[0051] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0052] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within 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 "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0054] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" 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 ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] Antennas are necessary components for realizing the wireless communication function of terminal products. Antennas can convert energy into electromagnetic waves in space, which is called transmission; they can also capture electromagnetic waves in space, which is called reception. The terminal products have compact structures and high integration, and antennas need to coexist with the surrounding environment in a limited space. For example, the terminal product may include a screen and a middle frame, on which an antenna may be arranged, and a cavity is usually formed between the screen and the middle frame. The middle frame is generally made of metal material, and the screen includes a metal layer. Therefore, the cavity formed between the middle frame and the screen will bring about a cavity effect, that is, electromagnetic oscillations will be generated in the cavity, affecting the radiation performance of the antenna. For example, during the uplink transmission process, the energy transferred from the circuit to the antenna is absorbed by the cavity while radiating energy to the free space, reducing the total radiated power (TRP) of the antenna. During the downlink reception process, the antenna obtains energy from the free space, and while transferring the energy to the circuit, the energy is also absorbed by the cavity, reducing the total isotropic sensitivity (TIS) of the antenna. In terms of the passive indicators of the antenna, the cavity will cause the antenna to have a radiation efficiency pit within a specific frequency band, affecting the antenna's radiation performance.

[0057] In the prior art, it is generally considered to use a metal conductor to electrically connect the metal layers of the middle frame and the screen at the cavity position to eliminate the cavity effect. For example, a reed can be welded on the middle frame at the cavity position by laser spot welding, and a conductive foam can be bonded to the reed. After the screen is installed, it can be squeezed on the conductive foam, so that at the cavity position, the electrical connection between the metal layer of the middle frame and the screen is achieved through the cooperation of the reed and the conductive foam. However, the use of welding processes such as laser spot welding requires that the metal to be welded needs to have a large thickness, usually greater than 0.5mm, otherwise it will cause the welded metal to burn through, or seriously reduce the structural reliability of the welded metal, and the excessive thickness of the welded metal is not conducive to the design requirements of the thin terminal product. In addition, if the above-mentioned cavity is formed between the screen and the battery, since the spot welding process cannot be applied to the battery, the cavity effect cannot be solved by the above-mentioned electrical connection between the screen and the battery.

[0058] The embodiments of the present application provide an electronic device, which may be a mobile phone, a computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a robotic arm, a camera, a robot, a vehicle, or a smart home device (such as a TV, an air conditioner, a sweeper, a speaker, a set-top box), a relay, a customer premise equipment (CPE), etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device. For the sake of convenience, the present application uses Figure 1 The electronic device shown is taken as a mobile phone for example.

[0059] Figure 2 for Figure 1 The cross-sectional view at AA in the figure is shown in Figure 2. Figure 2 , the electronic device may include a metal support 1, a screen module 2 and a magnetic part 3. Among them, the metal support 1 may be a structural part made of metal material, and the metal material may be aluminum alloy, steel, etc. The metal support 1 has a stable structure and can realize the support function of many devices such as the screen module 2. In one embodiment, when the electronic device is a mobile phone, the metal support 1 may include a middle frame 13 and a border 14, and the border 14 is connected to the edge of the middle frame 13 around the middle frame 13. The middle frame 13 is located inside the mobile phone for supporting the device, and the border 14 can be used as a lateral appearance part of the mobile phone, that is, the border 14 can be exposed on the outside and can be touched by the user's hand. In addition, a back cover 8 can be provided on the side of the middle frame 13 away from the screen module 2 to protect the internal device structure of the electronic device.

[0060] The antenna (not shown in the figure) is used to realize the transmission and reception of electromagnetic signals so that the electronic device has the function of wireless transmission of data. In one embodiment, the antenna can be an independent component and can be installed on the inner wall of the frame 14. In one embodiment, the antenna can also reuse part of the frame 14. The antenna can be a wire antenna, a slot antenna, etc., and this embodiment does not limit the specific type of the antenna.

[0061] Reference Figure 2 The metal support 1 is provided with a grounding portion 11, and the screen module 2 can be electrically connected to the grounding portion 11 to achieve grounding. In one embodiment, the grounding portion 11 can include one or more grounding points 111, and the grounding point 111 can be electrically connected to the screen module 2 through a metal member. The metal member can be a transmission line, a conductive foam, etc., and this embodiment does not limit the type of the metal member.

[0062] The screen module 2 is used to display the content screen. The screen module 2 can be a multi-layer structure, that is, the screen module 2 includes multiple film layers. For example, the screen module 2 can include a protective film, a display layer, a circuit layer, a polarizer layer, an optical adhesive layer, a metal layer, etc. At least some of these film layers can play different functions, and these film layers can be stacked in a set order. The screen module 2 can be installed on the metal support 1 as a whole, and a first hollow area 4 is formed between at least part of the screen module 2 and the metal support 1. The first hollow area 4 may not be provided with a device, and has a large space; or, when the first hollow area 4 has a large volume, the first hollow area 4 may also be provided with a device, such as a battery. Among them, the screen module 2 may include a metal layer, and the metal layer can realize the electrical connection between the screen module 2 and the metal support 1 to realize functions such as grounding, and can also have the effect of electromagnetic shielding to prevent some devices, conductive structures, etc. from affecting the performance of the antenna. Among them, at least part of the metal layer can be electrically connected to the grounding portion 11 on the metal support 1 to achieve grounding. At the same time, the projection of at least part of the metal layer in the thickness direction Z of the electronic device covers the first hollow area 4, so that the first hollow area 4 has metal structures on both sides of the electronic device thickness direction Z, so that the first hollow area 4 is formed to be similar to a metal cavity. It should be noted that this first hollow area 4 can be formed naturally after meeting the assembly requirements of various structural components, rather than being actively designed. This first hollow area 4 similar to a metal cavity will produce the aforementioned electromagnetic oscillation, affecting the antenna performance.

[0063] The magnetic component 3 can be connected to the screen module 2 and / or the metal support 1. Exemplarily, the magnetic component 3 can be manufactured separately and can be bonded to the screen module 2 and / or the metal support 1, so as to facilitate the assembly and adjustment of the magnetic component 3. Exemplarily, a spraying process can also be used to spray the magnetic material onto the screen module 2 and / or the metal support 1 to form a magnetic component 3 with a certain thickness, so as to ensure the setting accuracy and consistency of the magnetic component 3. The magnetic component 3 can respond to the magnetic field in the magnetic field, for example, it can suppress the energy allocated to the first hollow area 4 from the antenna within the working frequency band, thereby reducing the antenna energy loss.

[0064] in, Figure 3 This is a schematic diagram of a resonant circuit equivalent to the first hollow area 4 provided in an embodiment of the present application, referring to Figure 3 When electromagnetic oscillation occurs in the first hollow area 4, it can be equivalent to an RLC resonant circuit, where R represents resistance, L represents inductance, and C represents capacitance. The main function of setting the magnetic component 3 is to change the inductance L and resistance R of the resonant circuit. Among them, the inductance L affects the frequency of the electromagnetic oscillation in the first hollow area 4, and the resistance R affects the intensity of the electromagnetic oscillation in the first hollow area 4. Among them, the relationship between the resonant frequency f and the inductance L and the capacitance C is as follows:

[0065]

[0066] The intensity of the electromagnetic oscillation in the first hollow area 4 can be characterized by the quality factor (Q value) of the resonant circuit. The relationship between the quality factor Q and the resistance R, the inductance L and the capacitance C is as follows:

[0067]

[0068] The symbol “∝” indicates proportionality or positive correlation. According to formula (1), an increase in inductance L will reduce the resonant frequency f of the resonant circuit. According to formula (2), an increase in resistance R will reduce the quality factor Q of the resonant circuit, that is, reduce the electromagnetic oscillation intensity in the first hollow area 4. Therefore, it can be considered to increase the inductance L so that the electromagnetic oscillation frequency of the first hollow area 4 is moved out of the set working frequency band, and at the same time increase the resistance R to reduce the electromagnetic oscillation intensity of the first hollow area 4, so as to reduce the energy allocated to the first hollow area 4 from the antenna within the set working frequency band.

[0069] In this embodiment, at least part of the magnetic member 3 can be arranged in the first hollow area 4, and the magnetic member 3 can respond to the magnetic field in the first common area. Among them, the electromagnetic parameters of the magnetic member 3 are mainly relative magnetic permeability μ, the real part μ′ of the relative magnetic permeability μ represents the magnetic strength of the medium, and the imaginary part μ″ represents the magnetic loss. The relationship between the relative magnetic permeability μ, the real part μ′ and the imaginary part μ″ is as follows:

[0070] μ=μ′+jμ″.

[0071] Among them, the aforementioned inductance L is proportional to the real part μ′, that is, L∝μ′. The aforementioned resistance R is proportional to the imaginary part μ″, that is, R∝μ″. Therefore, by adopting a magnetic component 3 with a larger real part μ′, the electromagnetic oscillation frequency of the first hollow area 4 can be moved out of the set working frequency band. At the same time, by adopting a magnetic component 3 with a larger imaginary part μ″, the quality factor Q of the resonant circuit can be reduced, thereby reducing the electromagnetic oscillation intensity in the first hollow area 4. As a result, the energy allocated to the first hollow area 4 from the antenna within the set working frequency band is reduced, thereby improving the radiation performance of the antenna.

[0072] In one embodiment, the magnetic member 3 is close to the grounding portion 11 of the metal support member 1 . Figure 4 A schematic diagram of magnetic field distribution on an electronic device provided in an embodiment of the present application, referring to Figure 4 The impedance of the metal support 1 near the grounding portion 11 is low, and the current is strong. Strong current will generate a strong magnetic field. Figure 4 In the figure, the strong magnetic field area a and the strong magnetic field area b of the electronic device are shown by dashed lines, and the strong magnetic field areas a and b correspond to Figure 4 The highlighted area on the electronic device shown can make the magnetic component 3 have a significant response to the magnetic field by setting the magnetic component 3 in an area with a strong magnetic field, and can greatly suppress the energy allocated to the first hollow area 4 from the antenna within the working frequency band, thereby effectively solving the problem of electromagnetic oscillation in the first hollow area 4.

[0073] Therefore, by arranging the magnetic component 3 in the first hollow area 4, there is no need to adopt the existing electrical connection solution and is not limited by the welding process. The middle frame 13 can be made thinner and the thickness of the middle frame 13 can be reduced to below 0.5 mm, for example, 0.45 mm, 0.4 mm, 0.35 mm, 0.3 mm, etc. At the same time, the magnetic component 3 can be arranged on components such as batteries that cannot be processed by welding technology. That is to say, the magnetic component 3 can be used in various spaces that may affect the performance of the antenna and has a wider range of applications.

[0074] In one embodiment, as described above, the real part μ′ of the magnetic permeability of the magnetic component 3 characterizes the strength of the magnetic medium, and is proportional to the equivalent inductance L of the hollow area. By using a magnetic component 3 with a larger real part μ′, the electromagnetic oscillation frequency of the first hollow area 4 can be moved out of the set working frequency band. Therefore, the real part μ′ cannot be too small. If the real part μ′ is too small, for example, less than 5, it is difficult for the magnetic component 3 to respond significantly to the magnetic field, and the resonant frequency of the electromagnetic oscillation in the hollow area cannot be effectively moved out of the set working frequency band. For this reason, in this embodiment, the real part of the magnetic permeability of the magnetic component 3 can be greater than or equal to 5. For example, the real part of the magnetic permeability can be 5, 6, 7, 8, 9, 10, 11, 12, etc. By making the real part μ′ of the magnetic permeability within the above range, it can be ensured that the magnetic component 3 can move the resonant frequency of the electromagnetic oscillation in the hollow area out of the set working frequency band, reduce the energy loss of the antenna when working in the set working frequency band, and ensure the radiation performance of the antenna.

[0075] In one embodiment, the thickness and area of ​​the magnetic member 3 need to meet certain size requirements. If the size of the magnetic member 3 is too small, for example, if the thickness of the magnetic member 3 is less than 0.03 mm and the area is less than 10 mm 2 Therefore, in this embodiment, the thickness of the magnetic member 3 can be greater than or equal to 0.03 mm, and the area can be greater than or equal to 10 mm. 2 For example, the thickness of the magnetic member 3 can be 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc. For example, the area of ​​the magnetic member 3 can be 10 mm 2 , 100mm 2 , 200mm 2 、300mm 2 , 400mm 2 , 500mm 2 The thickness and area of ​​the magnetic member 3 are within the above ranges, which can ensure that the magnetic member 3 can effectively reduce the electromagnetic oscillation in the hollow area and ensure the radiation performance of the antenna.

[0076] In one embodiment, the magnetic component 3 can be a magnetic oxide film, a magnetic metal film or a magnetic semiconductor film. Among them, the magnetic oxide film refers to a film with oxides such as iron oxide, cobalt oxide, and nickel oxide as the main components. The magnetic metal film refers to a film with metals such as iron, cobalt, nickel, and iron alloys as the main components. The magnetic semiconductor film refers to a film composed of nitrogen group elements and transition group elements, which has both magnetic and semiconductor properties. Of course, in some other embodiments, the magnetic component 3 can also be other magnetic materials, and this embodiment will not be illustrated one by one.

[0077] In one embodiment, one or more magnetic members 3 may be provided. When multiple magnetic members 3 are provided, multiple magnetic members 3 are arrayed or discretely distributed between the metal support member 1 and the screen module 2. Therefore, the arrangement of the magnetic members 3 is highly flexible and can meet the arrangement requirements of various different whole machine environments.

[0078] In one embodiment, Figure 5 In one embodiment of the present application, Figure 1 Cross-sectional view at BB, refer to Figure 5 , the screen module 2 may include a body 21 and a flexible printed circuit board 22 (Flexible Printed Circuit, FPC). The body 21 may be a multi-layer structure. For example, the body 21 may include the aforementioned protective film, display layer, circuit layer, polarizer layer, optical adhesive layer, metal layer and other film layers, and each film layer may be stacked in the thickness direction Z. One end of the flexible printed circuit board 22 may be electrically connected to the circuit layer, and at least part of the flexible printed circuit board 22 may extend out of the body 21 and be bent between the body 21 and the metal support 1 to be electrically connected to the main board 7. The main board 7 may be a printed circuit board (PCB), and the printed circuit board has a circuit, and the circuit may be electrically connected to the circuit layer in the screen module 2 through the flexible printed circuit board 22 to control the function of the screen module 2. At least part of the flexible printed circuit board 22 may extend into the first hollow area 4, and the magnetic member 3 may be connected to the part of the flexible printed circuit board 22 located in the first hollow area 4. Compared with the main body 21 , the material and surface features of the flexible circuit board 22 are easier to be reliably connected with the magnetic component 3 . For example, the surface roughness of the flexible circuit board 22 is greater, and its material is easier to combine with the magnetic component 3 , thereby ensuring the connection reliability of the magnetic component 3 .

[0079] In one embodiment, Figure 6 In one embodiment of the present application, Figure 1 Cross-sectional view at CC, refer to Figure 6, a recess 12 may be provided on the metal support 1, and the opening direction of the recess 12 faces the screen module 2. Among them, the cross-sectional shape of the metal support 1 at the position of the recess 12 may be approximately in the shape of a "ji" character. The electronic device further includes a battery 5, and the battery 5 may be disposed in the recess 12, and a second hollow region 6 may be formed between the battery 5 and the screen module 2. Among them, the battery 5 includes a metal shell, and the second hollow region 6 between the metal shell and the metal layer of the screen module 2 may be approximately equivalent to a metal cavity. When the antenna is disposed at a position on the metal support 1 close to the battery 5, the electromagnetic energy radiated by the antenna will also cause electromagnetic oscillations to occur in the second hollow region 6, and the second hollow region 6 absorbs part of the energy received and transmitted by the antenna, resulting in a reduction in the energy that the antenna can receive or the energy radiated to the outside of the electronic device. For this reason, in this embodiment, at least part of the magnetic member 3 may be disposed in the second hollow region 6. By disposing the magnetic member 3 in the second hollow region 6, the magnetic member 3 can shift the resonance frequency of the electromagnetic oscillation in the second hollow region 6 outside the set operating frequency band, and at the same time can reduce the intensity of the electromagnetic oscillation, thereby realizing the reduction of the energy distributed to the antenna by the second hollow region 6 within the set operating frequency band and ensuring the transmission quality of the antenna signal.

[0080] Figure 7 Schematic diagram of the comparison of the radiation efficiency curves of the antenna provided by an embodiment of the present application before and after the magnetic member 3 is disposed in the second hollow region 6, referring to Figure 7 , Figure 7 In the figure, curve a is the radiation efficiency curve before the magnetic member 3 is disposed in the second hollow region 6, and curve b is the radiation efficiency curve after the magnetic member 3 is disposed in the second hollow region 6. The set center operating frequency of the antenna is 0.9 GHz. Figure 7 The radiation curve shown corresponds to Figure 6 The structure of the electronic device shown. In Figure 6 the structure of the electronic device shown, the thickness of the magnetic member 3 is 0.05 mm, and the area is 430 mm 2 . The real part of the relative permeability of the magnetic member 3 in the target frequency band (the frequency band corresponding to the center operating frequency of 0.9 GHz) is about 12, and the imaginary part of the relative permeability is about 24. It can be seen from curve a that when the magnetic member 3 is not disposed in the second hollow region 6, there is an obvious efficiency pit in the antenna radiation efficiency curve near 0.9 GHz. After the magnetic member 3 is disposed in the second hollow region 6, by comparing curve a and curve b, it can be seen that the efficiency pit of the antenna radiation efficiency curve becomes shallower, and the radiation efficiency near the center operating frequency of 0.9 GHz is increased by nearly 0.5 dB.

[0081] In one embodiment, referring to Figure 6One end of the flexible circuit board 22 can be electrically connected to the circuit layer in the body 21. At least part of the flexible circuit board 22 extends out of the body 21 and can be bent between the body 21 and the metal support 1. Specifically, the flexible circuit board 22 can be bent into the second hollow area 6 between the battery 5 and the screen module 2. The magnetic component 3 is arranged at the portion of the flexible circuit board 22 bent into the second hollow area 6 and is arranged on the side close to the battery 5. Thus, it can be ensured that the magnetic component 3 will not be blocked by the metal material, and the magnetic component 3 can be exposed in the second hollow area 6 as much as possible, thereby enhancing the effect of the magnetic component 3 on the magnetic field in the second hollow area 6.

[0082] In one embodiment, the magnetic member 3 can be bonded to the screen module 2 and / or the battery 5. In one embodiment, the magnetic member 3 can also be formed on the screen module 2 and / or the battery 5 by a spraying process. In other words, this embodiment does not need to adopt the existing electrical connection solution, is not limited by the welding process, and can realize the arrangement of the magnetic member 3 on the battery 5, thereby being able to eliminate the electromagnetic oscillation in the second hollow area 6 in a wider range of scenarios and improve the antenna radiation performance.

[0083] In one embodiment, referring to Figure 6 When the temperature of the battery 5 rises, it will expand to a certain extent. If the two ends of the magnetic member 3 are respectively in contact with the screen module 2 and the surface of the battery 5, the battery 5 will lift up the screen module 2 after expansion, causing the screen module 2 to bulge locally, crack, and other problems. For this reason, in this embodiment, the magnetic member 3 can be connected to only one of the screen module 2 and the battery 5, and a gap G is maintained between the magnetic member 3 and the other. Figure 6 2 shows that the magnetic member 3 is connected to the flexible circuit board 22, and there is a gap G between the magnetic member 3 and the battery 5. Thus, a certain space can be reserved for the expansion of the battery 5 through the gap G, so as to avoid the battery 5 from exerting a squeezing force on the screen module 2 when it heats up and expands.

[0084] In one embodiment, the gap G reserved between the magnetic component 3 and the screen module 2 or the battery 5 may be greater than or equal to 0.2 mm, thereby ensuring that the magnetic component 3 has a good ability to eliminate electromagnetic shocks while preventing the battery 5 from squeezing the screen module 2 after heating and expanding.

[0085] In one embodiment, referring to Figure 6 The grounding portion 11 may include a first grounding area 11a and a second grounding area 11b. The first grounding area 11a and the second grounding area 11b may be provided with one or more grounding points 111 for grounding the screen module 2. The first grounding area 11a and the second grounding area 11b are respectively located on both sides of the recessed portion 12. In one embodiment, referring to Figure 6The magnetic member 3 may be disposed in the second hollow area 6 and close to the first grounding area 11 a.

[0086] In one embodiment, Figure 8 In another embodiment of the present application, Figure 1 Cross-sectional view at CC, refer to Figure 8 The magnetic member 3 can be arranged in the second hollow area 6 and close to the second grounding area 11b. In this embodiment, the thickness of the magnetic member 3 is 0.1 mm and the area is 190 mm. 2 The real part of the relative magnetic permeability of the magnetic component 3 in the target frequency band (the frequency band corresponding to the central operating frequency of 0.9 GHz) is approximately 12, and the imaginary part of the relative magnetic permeability is approximately 24. Fig. 9 A schematic diagram comparing the radiation efficiency curves of an antenna provided in another embodiment of the present application before and after the magnetic member 3 is arranged in the second hollow area 6, referring to Fig. 9 , Fig. 9 Curve c in FIG. 1 is a radiation efficiency curve before the magnetic member 3 is arranged in the second hollow area 6 , and curve d is a radiation efficiency curve after the magnetic member 3 is arranged in the second hollow area 6 . The central operating frequency of the antenna is set to 0.9 GHz. Fig. 9 The radiation curves shown correspond to Figure 8 The structure of the electronic device shown. As can be seen from curve c, when the magnetic component 3 is not provided in the second hollow area 6, the antenna radiation efficiency curve has an obvious efficiency pit near 0.9 GHz. After the magnetic component 3 is provided in the second hollow area 6, by comparing curve c and curve d, it can be seen that the efficiency pit of the antenna radiation efficiency curve becomes shallower, and the radiation efficiency near the center operating frequency of 0.9 GHz is improved by nearly 0.5 dB.

[0087] In one embodiment, Fig.10 In another embodiment of the present application, Figure 1 Cross-sectional view at CC, refer to Fig.10 Magnetic members 3 may be provided at positions in the second hollow area 6 close to the first grounding area 11a and the second grounding area 11b. In this embodiment, the thickness of the magnetic member 3 is 0.05 mm and the area is 430 mm. 2 The real part of the relative magnetic permeability of the magnetic component 3 in the target frequency band (the frequency band corresponding to the central operating frequency of 0.9 GHz) is approximately 12, and the imaginary part of the relative magnetic permeability is approximately 24. Fig.11 A schematic diagram comparing the radiation efficiency curves of an antenna provided in another embodiment of the present application before and after the magnetic member 3 is arranged in the second hollow area 6, referring to Fig.11 , Fig.11Curve e in FIG. 1 is a radiation efficiency curve before the magnetic member 3 is arranged in the second hollow area 6 , and curve f is a radiation efficiency curve after the magnetic member 3 is arranged in the second hollow area 6 . The central operating frequency of the antenna is set to 0.9 GHz. Fig.11 The radiation curves shown correspond to Fig.10 The structure of the electronic device shown. As can be seen from curve e, when the magnetic member 3 is not provided in the second hollow area 6, the antenna radiation efficiency curve has an obvious efficiency pit near 0.9 GHz. After the magnetic member 3 is provided in the second hollow area 6, by comparing curve e with curve f, it can be seen that the efficiency pit of the antenna radiation efficiency curve becomes shallower, and the radiation efficiency near the center operating frequency of 0.9 GHz is improved by nearly 1 dB.

[0088] Therefore, the magnetic member 3 can be arranged at each position close to the grounding portion 11, so that the arrangement position has greater flexibility.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. 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: include: A metal support, on which an antenna and at least one grounding portion are disposed; A screen module, wherein the screen module is connected to the metal support member, and a first hollow area is formed between at least a portion of the screen module and the metal support member; The screen module comprises a metal layer, the projection of at least a part of the metal layer in the thickness direction of the electronic device covers the first hollow area, and at least another part of the metal layer is electrically connected to the grounding portion; A magnetic member, at least a portion of which is disposed in the first hollow area and close to the grounding portion, and the magnetic member is connected to the screen module and / or the metal support member.

2. The electronic device according to claim 1, characterized in that: The screen module includes a body and a flexible circuit board, wherein a circuit layer is disposed in the body, one end of the flexible circuit board is electrically connected to the circuit layer, and at least part of the flexible circuit board extends out of the body, is bent between the body and the metal support, and extends into the first hollow area; The magnetic member is connected to a portion of the flexible circuit board located within the first hollow area.

3. The electronic device according to claim 1, characterized in that: The metal support is provided with a recessed portion, and the opening direction of the recessed portion faces the screen module; The electronic device further comprises a battery, wherein the battery is disposed in the recessed portion, a second hollow area is formed between the battery and the screen module, and at least a portion of the magnetic member is disposed in the second hollow area.

4. The electronic device according to claim 3, characterized in that: The magnetic member is connected to one of the screen module or the battery, and a gap is maintained between the magnetic member and the other one.

5. The electronic device according to claim 4, characterized in that: The gap is greater than or equal to 0.2 mm.

6. The electronic device according to claim 3, characterized in that: The grounding portion includes a first grounding area and a second grounding area, wherein the first grounding area and the second grounding area are respectively located at two sides of the recessed portion; The magnetic member is disposed in the second hollow area and close to the first grounding area; and / or the magnetic member is disposed in the second hollow area and close to the second grounding area.

7. The electronic device according to any one of claims 3 to 6, characterized in that: The magnetic member is bonded to the screen module and / or the battery; or, the magnetic member is formed on the screen module and / or the battery by a spraying process.

8. The electronic device according to any one of claims 1 to 7, characterized in that: The thickness of the magnetic part is greater than or equal to 0.03 mm, and the area is greater than or equal to 10 mm 2 .

9. The electronic device according to any one of claims 1 to 8, characterized in that: The real part of the magnetic permeability of the magnetic component is greater than or equal to 5.

10. The electronic device according to claim 1, characterized in that: The magnetic member is bonded to the screen module and / or the metal support member; or, the magnetic member is formed on the screen module and / or the metal support member by a spraying process.

11. The electronic device according to any one of claims 1 to 10, characterized in that: There are one or more magnetic members. When there are multiple magnetic members, the multiple magnetic members are arrayed or discretely distributed between the metal support member and the screen module.

12. The electronic device according to any one of claims 1 to 11, characterized in that: The magnetic element is a magnetic oxide film, a magnetic metal film or a magnetic semiconductor film.

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