CN108550979B

CN108550979B - Antenna assembly, shell assembly and electronic equipment

Info

Publication number: CN108550979B
Application number: CN201810457816.5A
Authority: CN
Inventors: 周林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-14
Filing date: 2018-05-14
Publication date: 2020-12-01
Anticipated expiration: 2038-05-14
Also published as: CN108550979A

Abstract

The embodiment of the application provides an antenna assembly, a shell assembly and electronic equipment, wherein the antenna assembly comprises a substrate and a metal frame, the substrate is provided with a corner, the metal frame is provided with a first end part and a second end part, the metal frame is arranged on the outer periphery of the substrate, the substrate and the metal frame form a first gap and a second gap, a first opening and a second opening are arranged at two ends of the first gap, the first opening and the second opening are positioned at the corner of the substrate, and a third opening and a fourth opening penetrate through the middle of the second gap from the substrate to the second end part of the metal frame; the first metal section is formed at the first end part of the metal frame on the outer periphery of the substrate and is positioned between the first opening and the second opening, and the first metal section is coupled with the first signal source; and the second metal section is formed at the second end part of the metal frame on the outer periphery of the substrate and is coupled with a second signal source. The electronic equipment provided by the embodiment of the application can reduce the antenna clearance area on the side surface of the electronic equipment so as to improve the area of the display screen.

Description

Antenna assembly, shell assembly and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to an antenna assembly, a housing assembly, and an electronic device.

Background

With the development of network technology and the improvement of the intelligent degree of electronic equipment, users can realize more and more functions such as conversation, chatting, game playing and the like through the electronic equipment.

The user realizes signal transmission through the antenna of the electronic equipment in the conversation and chat processes of the electronic equipment.

Most of the existing antenna structures of electronic equipment require that empty areas exist on the side faces of mobile phones, but with the development and application of full-face screens, the clearance which can be provided by the electronic side faces is smaller and smaller.

Disclosure of Invention

The embodiment of the application provides an antenna assembly, a shell assembly and electronic equipment, which can reduce the antenna clearance area on the side surface of the electronic equipment so as to improve the area of a display screen.

An embodiment of the application provides an antenna assembly, including

The substrate is provided with corners, the metal frame is arranged on the periphery of the substrate, the metal frame is provided with a first end part and a second end part opposite to the first end part, a first gap is arranged between the substrate and the first end part of the metal frame, a second gap is arranged between the substrate and the second end part of the metal frame, a first opening and a second opening which penetrate through the metal frame from the substrate to the metal frame are arranged at two ends of the first gap, the first opening and the second opening are positioned at the corners of the substrate, and a third opening and a fourth opening penetrate through the middle of the second gap from the substrate to the second end part of the metal frame;

the first metal section is formed at the first end part of the metal frame on the outer periphery of the substrate and is positioned between the first opening and the second opening, and the first metal section is coupled with a first signal source;

and the second metal section is formed at the second end part of the metal frame on the outer periphery of the substrate and is coupled with a second signal source.

The present application further provides a housing assembly, comprising: the metal base plate is provided with four corners, the metal frame is arranged on the outer periphery of the metal base plate, the metal frame is provided with a first end part and a second end part opposite to the first end part, a first gap is arranged between the metal substrate and the first end part of the metal frame, a second gap is arranged between the metal substrate and the second end part of the metal frame, the non-metal substrate is arranged in the first gap and the second gap, the two ends of the first gap are provided with a first opening and a second opening which penetrate through the metal frame from the metal substrate to the metal frame, the first opening and the second opening are positioned at the corners of the metal substrate, and a third opening and a fourth opening penetrate through the middle of the second gap from the metal substrate to the second end part of the metal frame;

the first metal section is formed at the first end part of the metal frame on the outer periphery of the metal substrate and is positioned between the first opening and the second opening, and the first metal section is coupled with a first signal source;

and the second metal section is formed at the second end part of the metal frame on the outer periphery of the metal substrate and is coupled with a second signal source.

The embodiment of the application also provides electronic equipment, which comprises a circuit board and an antenna assembly, wherein the antenna assembly is the antenna assembly, and the circuit board is electrically connected with the antenna assembly.

The antenna module, casing subassembly and electronic equipment that this application embodiment provided, the opening generally all sets up among the prior art the side of metal frame, with the opening setting in this application embodiment the corner of base plate has liberated the base plate side like this with metal substrate's installation space has promoted the display area of display screen, realization full screen that can be better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a housing assembly according to an embodiment of the present application.

Fig. 4 is another schematic structural diagram of the housing assembly according to the embodiment of the present application.

Fig. 5 is another schematic structural diagram of the housing assembly according to the embodiment of the present application.

Fig. 6 is another schematic structural diagram of the housing assembly according to the embodiment of the present application.

Fig. 7 is a schematic structural diagram of an antenna assembly provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides electronic equipment. The electronic device can be a smart phone, a tablet computer and the like. In some embodiments, referring to fig. 1, the electronic device 100 includes a display screen 10, a middle frame 20, a circuit board 30, a battery 40, and a rear cover 50.

Wherein the display screen 10 is mounted on the rear cover 50 to form a display surface of the electronic device 100. The display screen 10 serves as a front housing of the electronic device 100, and forms a receiving space with the rear cover 50 for receiving other electronic components or functional components of the electronic device 100. Meanwhile, the display screen 10 forms a display surface of the electronic apparatus 100 for displaying information such as images, texts, and the like. The Display screen 10 may be a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen.

In some embodiments, as shown in FIG. 1, the display screen 10 may include a display area 11 and a non-display area 12. The display area 11 performs a display function of the display screen 10 for displaying information such as images and texts. The non-display area 12 does not display information. The non-display area 12 can be used for setting functional components such as a camera, a receiver, a touch electrode of a display screen, and the like. In some embodiments, the non-display area 12 may include at least one area located at upper and lower portions of the display area 11.

Note that, as shown in fig. 1, the display screen 10 includes two

opposite end portions

10A and 10B. In some scenarios, the display screen 10 may be a portrait screen display or a landscape screen display. The two

ends

10A, 10B of the display screen are described here only in the context of the vertical display of the display screen 10. The end portion 10A is a top end of the display screen 10 when displaying information. Generally, information such as time, power, signal strength, network type, etc. may be displayed in a display area of the display screen 10 near the top end 10A. The end portion 10B is the bottom end when the display screen 10 displays information. In general, a taskbar may be displayed in the display area of the display screen 10 near the bottom end 10B and the taskbar may be used to display icons of applications commonly used by the user.

In some embodiments, as shown in FIG. 2, the display screen 10 may be a full-face screen. At this time, the display screen 10 may display information in a full screen, so that the electronic apparatus 100 has a large screen occupation ratio. The display screen 10 comprises only the display area 11 and no non-display area. At this time, functional components such as a camera and a proximity sensor in the electronic apparatus 100 may be hidden under the display screen 10, and the fingerprint recognition module of the electronic apparatus 100 may be disposed on the back of the electronic apparatus 100.

The middle frame 20 may have a thin plate-like or sheet-like structure, or may have a frame structure having a through hole. The middle frame 20 can be accommodated in the accommodating space formed by the display screen 10 and the rear cover 50. The middle frame 20 is used for providing a supporting function for the whole structure of the electronic device 100, so as to mount the electronic elements and the functional components in the electronic device 100 together to form a complete electronic device. For example, functional components such as a camera, a receiver, a circuit board, and a battery in the electronic apparatus 100 may be mounted on the middle frame 20 for fixation.

The circuit board 30 is mounted inside the receiving space. For example, the circuit board 30 may be mounted on the middle frame 20 and received in the receiving space together with the middle frame 20. The circuit board 30 may be a motherboard of the electronic device 100. Wherein the processor of the electronic device 100 may be disposed on the circuit board 30. One, two or more of the functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a distance sensor, an ambient light sensor, a gyroscope, etc. may also be integrated on the circuit board 30. Meanwhile, the display screen 10 may be electrically connected to the circuit board 30.

In some embodiments, display control circuitry is disposed on the circuit board 30. The display control circuit outputs an electrical signal to the display screen 10 to control the display screen 10 to display information.

The battery 40 is mounted inside the receiving space. For example, the battery 40 may be mounted on the middle frame 20 and be received in the receiving space together with the middle frame 20. The battery 40 may be electrically connected to the circuit board 30 to enable the battery 40 to power the electronic device 100. The circuit board 30 may be provided thereon with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 40 to the various electronic components in the electronic device 100.

The rear cover 50 is used to form an outer contour of the electronic device 100. The rear cover 50 may be integrally formed. In the forming process of the rear cover 50, a rear camera hole, a fingerprint identification module mounting hole and the like can be formed in the rear cover 50.

In some embodiments, the back cover 50 may be a metal back cover, such as a metal such as magnesium alloy, stainless steel, or the like. It should be noted that the material of the rear cover 50 in the embodiment of the present application is not limited thereto, and other manners may also be adopted, for example, the rear cover 50 may be a plastic rear cover, and for example, the rear cover 50 may be a ceramic rear cover. For another example, the rear cover 50 may include a plastic portion and a metal portion, and the rear cover 50 may be a rear cover structure in which metal and plastic are matched with each other. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete rear cover structure.

In some embodiments, the electronic device 10 may further include a radiator, and the circuit board is electrically connected to the radiator for transmitting and receiving signals. The radiator may be mounted to the housing 15, such as the bezel 151. The radiator may form an integrated structure with the middle frame 151, defining a housing assembly. The housing assembly will be described in detail below as an example.

Referring to fig. 3, the housing assembly 60 may include a metal substrate 61, a non-metal substrate 62, a metal frame 63, a first metal segment 66 and a second metal segment 67, wherein the metal frame 63 is formed on a periphery of the metal substrate 61, a first gap 64 and a second gap 65 are disposed between the metal frame 63 and the metal substrate 61, the first metal segment 66 is formed on the metal frame 63 at an outer edge of the first gap 64, the second metal segment 67 is formed on the metal frame 63 at an outer edge of the second gap 65, the non-metal substrate 62 is disposed in the first gap 64 and the second gap 65, and the non-metal substrate 62 is connected to the first metal segment 66, the second metal segment 67 and the metal substrate 61.

The metal substrate 61 may be a magnesium alloy substrate, and reference may be made to the above middle frame, which is not described herein again.

The metal frame 63 may be a magnesium alloy frame, and the metal frame 63 may be integrally formed with the metal substrate 61, for example, by injection molding in a mold by using a metal injection molding method, and then integrally formed by using a machining method, for example, and further fixedly connected by welding. In some embodiments, the metal frame 63 is located at the periphery of the metal substrate 61.

As shown in fig. 4, in some embodiments, the metal substrate 61 has a first end 631 and a second end 632, and the first end 631 and the second end 632 are respectively located at two opposite ends of the metal substrate 61, such as the first end located at the top of the electronic device and the second end located at the bottom of the electronic device.

In some embodiments, the metal substrate 61 has four corners, namely a first corner 1, a second corner 2, a third corner 3 and a fourth corner, and the first corner 1, the second corner 2, the third corner 3 and the fourth corner 4 are located at four corner positions of the metal substrate 61. Wherein the first corner 1 and the second corner 2 are located on both sides of the first end portion, respectively. Wherein the third corner 3 and the fourth corner 4 are located on either side of the second end portion. Specifically, the metal frame 63 includes a top edge 633, a first side edge 634, a second side edge 636, and a bottom edge 635, wherein the top edge 633 is located at the first end 631 of the metal frame 63, the bottom edge 635 is located at the second end 632 of the metal frame 63, the top edge 633 and the second side edge 636 form a first corner 1, the top edge 633 and the first side edge 634 form a second corner 2, the bottom edge 635 and the first side edge 634 form a third corner 3, and the bottom edge 635 and the second side edge 636 form a fourth corner 4.

In some embodiments, the first slit 64 has a first opening 641 and a second opening 642 at two ends, the first opening 641 is disposed at the first corner 1, the second opening 642 is disposed at the second corner 2, and the first opening 641 and the second opening 642 are disposed axially symmetrically with respect to the substrate. The first opening 641 and the second opening 642 penetrate the metal frame 63 from the metal substrate 61 to the metal frame 63, and a third opening 651 and a fourth opening 652 penetrate the middle of the second gap 65 from the substrate to the second end 632 of the metal frame 63. Specifically, the third and

fourth openings

651 and 652 extend from the second slit 65 to the bottom edge 635. It should be noted that the third opening 651 and the fourth opening 652 do not extend to the corners and sides of the metal frame 63.

In some embodiments, one opening, two openings, or three openings may be formed in the second slit 65, and in the embodiments of the present application, the number of the openings formed in the second slit 65 is not particularly limited.

Wherein the third opening 651 and the fourth opening 652 are axisymmetrically disposed with respect to the metal substrate 61. Of course, the third opening 651 and the fourth opening 652 may not be provided axisymmetrically with respect to the metal base plate 61. The third opening 651 and the fourth opening 652 may be disposed at any position of the second slit 65, but need not be limited to extend to the side of the metal frame 63.

In some embodiments, the metal frame 63 includes a first metal segment 66 and a second metal segment 67, the first metal segment 66 is formed at a first end portion 631 of the metal frame 63 at the outer periphery of the substrate and located between the first opening 641 and the second opening 642, and the first metal segment 66 is coupled to a first signal source 661; a second metal segment 67 is formed at a second end 632 of the metal frame 63 at the outer periphery of the substrate, and the second metal segment 67 is coupled to a second signal source 671.

Among the prior art the opening generally all sets up the side of metal frame 63, with the opening setting in the embodiment of this application the corner of base plate, liberated the base plate side like this with metal frame 63's installation space has promoted the display area of display screen, realization full face screen that can be better.

In some embodiments, the angle formed between the first opening 641 and the first side edge 634 is in a range of 0-45 degrees, and the angle formed between the second opening 642 and the second side edge 636 is in a range of 0-45 degrees. That is, the positions of the openings at the two ends of the first slot 64 are limited to any position from the center of the corner to the joint between the corner and the top edge 633, the openings are limited as close as possible to the top edge 633, and the openings are cut off at the joint between the corner and the top edge 633, so that the effective length of the antenna can be effectively ensured under the condition of avoiding slotting at the side edge of the electronic device.

The first opening 641 and the second opening 642 are disposed in an axisymmetric manner with respect to the metal substrate 61.

The first opening 641 is located on a diagonal line between the first corner 1 and the third corner 3, and the second opening 642 is located on a diagonal line between the second corner 2 and the fourth corner 4.

As shown in fig. 5, a first gap hole 643 and a second gap hole 644 are disposed on the first slot 64, a first antenna structure 662 is formed between the first opening 641 and the first gap hole 643, a second antenna structure 663 is formed between the first gap hole 643 and the second gap hole 644, a third antenna structure 664 is formed between the second gap hole 644 and the second opening 642, the first antenna structure 662 is coupled with a first feed 665, the second antenna structure 663 is coupled with a second feed, and the third antenna structure 664 is coupled with a third feed 667.

The first clearance hole 643 and the second clearance hole 644 may be rectangular holes, and the width of the first clearance hole 643 and the second clearance hole 644 is less than 2 mm. Here, the second opening 642 may be a rectangular hole, the first clearance hole 643 and the second clearance hole 644 may be formed identically, and the first clearance hole 643 and the second clearance hole 644 may have the same size. The shape and size of the first clearance hole 643 and the second clearance hole 644 are not limited to these.

It should be noted that the first gap 64 may include two clearance holes, three clearance holes, or a plurality of clearance holes, and in the embodiment of the present application, the number of the clearance holes is not specifically limited.

It should be noted that the clearance hole may be an earphone hole or a USB interface, where the earphone hole may be used for plugging an earphone, and the USB interface may be used for plugging a USB connector.

The first antenna structure 662 may receive and transmit GPS (Global Positioning System) and WIFI (wireless local area network) 2.4G/5G signals. The first antenna structure 662 is not limited to transmitting and receiving GPS and WIFI2.4G/5G signals, and may transmit and receive other signals.

The second antenna structure 663 can receive and transmit low frequency band (700-. It should be noted that the second antenna structure 663 is not limited to transmitting and receiving signals in the low frequency band and the high frequency band, and may transmit and receive other signals.

The third antenna structure 664 can receive and transmit signals of the middle frequency band (1710-. The third antenna structure 664 is not limited to transceiving signals of a low frequency band and a high frequency band, and may also transceive other signals.

Referring to fig. 6, the second antenna structure 663 adjacent to the first antenna structure 662 is connected to the ground point 68 via a capacitor 69. Certainly, when the first antenna structure 662 faces the low frequency opening of the antenna of the second antenna mechanism, and the first antenna mechanism receives and transmits GPS signals, the isolation between the first antenna structure 662 and the second antenna structure 663 is poor, which results in poor performance of the second antenna structure receiving and transmitting GPS signals, and the capacitor 69 is added near the first opening 641, which can significantly improve the isolation between the first antenna structure 662 and the second antenna structure 663, and meanwhile, the second antenna structure is separated from the third antenna structure 664 by the layout, which can more easily optimize the antenna performance of the second antenna structure 663 and the third antenna structure 664.

It should be noted that one opening, two openings, or three openings may be formed in the second slit 65, and in this embodiment, the number of the openings formed in the second slit 65 is not specifically limited.

Wherein the third opening 651 and the fourth opening 652 are axisymmetrically disposed with respect to the metal substrate 61. Of course, the third opening 651 and the fourth opening 652 may not be provided axisymmetrically with respect to the metal base plate 61. The third opening 651 and the fourth opening 652 may be disposed at any position of the third slit, but need not be limited to extend to the side of the metal frame 63.

The third opening 651 may be a rectangular hole, and the width of the third opening 651 may range from 1.5mm to 2 mm. The fourth opening 652 may be a rectangular hole, and the width of the fourth opening 652 may range from 1.5mm to 2 mm. The third and

fourth openings

651 and 652 may be formed identically, and the third and

fourth openings

651 and 652 may have the same size. The shape and size of the third and

fourth openings

651 and 652 are not limited to these.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an antenna assembly 70 according to an embodiment of the present application, where the antenna assembly 70 may include a substrate 71 and a metal frame 72.

The substrate 71 may be a metal substrate, and the metal substrate may be a magnesium alloy substrate, which may be referred to above specifically and will not be described herein again.

The metal frame 72 may be a magnesium alloy frame, which can be referred to above specifically and will not be described herein again.

In some embodiments, the metal base plate 71 and the metal frame 72 may be integrally formed by injection molding to form a plurality of slits and a plurality of metal segments. The gaps and the metal segments may refer to the above contents, which are not described herein again.

In some embodiments, the housing assembly 70 includes a base plate 71 and a metal frame 72, the base plate 71 has corners, the metal frame 72 is disposed on the outer periphery of the base plate 71, the metal frame 72 has a first end portion 731 and a second end portion 732 opposite to the first end portion 731, a first gap 74 is disposed between the base plate 71 and the first end portion 731, a second gap 75 is disposed between the base plate 71 and the second end portion 732, both ends of the first gap 74 have a first opening 741 and a second opening 742 penetrating the metal frame 72 from the base plate 71 to the metal frame 72, the first opening 741 and the second opening 752 are located at the corners of the base plate 71, and a third opening 751 and a fourth opening 752 penetrating the second end portion 732 from the base plate 71 to the metal frame 75; a first metal segment 76 is formed at the first end 731 of the metal frame on the outer periphery of the substrate 71 and located between the first opening 741 and the second opening 742, the first metal segment 76 is coupled to a first signal source 761; a second metal segment 77, a second end 732 of the metal frame formed on the outer periphery of the substrate 71, wherein the second metal segment 77 is coupled to a second signal source 771.

The antenna assembly, the housing assembly, and the electronic device provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are described herein using specific examples, which are provided only to help understand the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An antenna assembly, comprising: the base plate is provided with corners, the metal frame is arranged on the outer periphery of the base plate, the metal frame is provided with a first end part and a second end part opposite to the first end part, a first gap is arranged between the base plate and the first end part of the metal frame, a first clearance hole and a second clearance hole are arranged on the first gap, a second gap is arranged between the base plate and the second end part of the metal frame, a first opening and a second opening which penetrate through the metal frame from the base plate to the metal frame are arranged at two ends of the first gap, the first opening and the second opening are located at the corners of the base plate, and a third opening and a fourth opening penetrate through the middle of the second gap from the base plate to the second end part of the metal frame;

a first metal segment formed at a first end of the metal frame on the outer periphery of the substrate and located between the first opening and the second opening, wherein a portion of the first metal segment from the first opening position to the first gap hole position forms a first antenna structure, a portion of the first metal segment from the first gap hole position to the second gap hole position forms a second antenna structure, a portion of the first metal segment from the second gap hole position to the second opening position forms a third antenna structure, the first antenna structure is coupled with a first feed source, the second antenna structure is coupled with a second feed source, and the third antenna structure is coupled with a third feed source;

the second metal section is formed at the second end part of the metal frame on the outer periphery of the substrate, the third opening and the fourth opening are positioned on the second metal section, and the second metal section is coupled with a second signal source.

2. The antenna assembly of claim 1, wherein the metal bezel comprises a top side, a first side, a second side, and a bottom side, wherein the top side is located at the first metal bezel end, the bottom side is located at the second metal bezel end, the top side and the second side form a first corner, the top side and the first side form a second corner, the bottom side and the first side form a third corner, the bottom side and the second side form a fourth corner, the first opening is disposed at the first corner, the second opening is disposed at the second corner, and the first opening and the second opening are disposed axisymmetrically with respect to the substrate.

3. The antenna assembly of claim 2, wherein the first opening forms an angle with the first side in the range of 0-45 degrees and the second opening forms an angle with the second side in the range of 0-45 degrees.

4. The antenna assembly of claim 3, wherein the first opening is located on the first corner diagonal from the third corner and the second opening is located on the second corner diagonal from the fourth corner.

5. The antenna assembly of claim 1 wherein the second antenna structure is connected to ground adjacent the first antenna structure by a capacitor.

6. The antenna assembly of claim 1, wherein the first clearance hole and the second clearance hole have a width of no less than 0.2 millimeters.

7. The antenna assembly of claim 1, wherein the third and fourth openings are disposed axisymmetrically with respect to the substrate.

8. The antenna assembly of claim 7, wherein the width of the third opening ranges from 1.5mm to 2mm, and the width of the fourth opening ranges from 1.5mm to 2 mm.

9. A shell assembly is characterized by comprising a metal substrate, a non-metal substrate and a metal frame, wherein the metal substrate is provided with four corners, the metal frame is arranged on the outer periphery of the metal substrate, the metal frame is provided with a first end part and a second end part opposite to the first end part, a first gap is arranged between the metal substrate and the first end part of the metal frame, a first clearance hole and a second clearance hole are arranged on the first gap, a second gap is arranged between the metal substrate and the second end part of the metal frame, the non-metal substrate is arranged in the first gap and the second gap, a first opening and a second opening which penetrate through the metal frame from the metal substrate to the metal frame are arranged at two ends of the first gap, and the first opening and the second opening are positioned at the corners of the metal substrate, a third opening and a fourth opening penetrate through the middle of the second gap from the metal substrate to the second end part of the metal frame;

a first metal segment formed at a first end portion of the metal frame on the outer periphery of the metal substrate and located between the first opening and the second opening, wherein a portion of the first metal segment from the first opening position to the first gap hole position forms a first antenna structure, a portion of the first metal segment from the first gap hole position to the second gap hole position forms a second antenna structure, a portion of the first metal segment from the second gap hole position to the second opening position forms a third antenna structure, the first antenna structure is coupled with a first feed source, the second antenna structure is coupled with a second feed source, and the third antenna structure is coupled with a third feed source;

the second metal section is formed at the second end part of the metal frame on the outer periphery of the metal substrate, the third opening and the fourth opening are positioned on the second metal section, and the second metal section is coupled with a second signal source.

10. The housing assembly of claim 9, wherein the metal bezel includes a top side, a first side, a second side, and a bottom side, the top side is located at a first end of the metal bezel, the top side and the second side form a first corner, the top side and the first side form a second corner, the bottom side and the first side form a third corner, the bottom side and the second side form a fourth corner, the first opening is disposed at the first corner, the second opening is disposed at the second corner, and the first opening and the second opening are disposed axisymmetrically with respect to the metal base plate.

11. The housing assembly of claim 10, wherein the first opening forms an angle with the first side in the range of 0-45 degrees and the second opening forms an angle with the second side in the range of 0-45 degrees.

12. The housing assembly of claim 11 wherein the first opening is located on the first corner diagonal with the third corner and the second opening is located on the second corner diagonal with the fourth corner.

13. The housing assembly of claim 9 wherein the second antenna structure is connected to ground adjacent the first antenna structure by a capacitor.

14. An electronic device comprising an antenna assembly and a circuit board, the antenna assembly, the circuit board and the antenna assembly being electrically connected, the antenna assembly being an antenna assembly according to any one of claims 1 to 8.