CN113964537A

CN113964537A - Electronic device

Info

Publication number: CN113964537A
Application number: CN202111187891.2A
Authority: CN
Inventors: 史悦
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-01-21

Abstract

The application discloses electronic equipment belongs to electronic equipment technical field. The electronic equipment comprises a cover plate, a screen, a metal frame body and a feed structure; the cover plate is arranged on one side of the screen, the metal frame body is arranged on one side of the screen, which is far away from the cover plate, the screen and the metal frame body are arranged at intervals, a cavity and a radiation opening are formed between the screen and the metal frame body, the feed structure is arranged on one side of the cover plate, where the screen is located, and the feed structure is located on one side, which is towards the radiation opening, of the screen; wherein, under the condition that the feed structure works, the feed structure excites the cavity to generate an antenna radiation signal, and the antenna radiation signal is emitted from the radiation opening. The cavity and the radiation opening are formed through the cover plate, the screen and the metal frame body, the feed structure is arranged at a position close to the radiation opening, when the feed structure is excited, the cavity is constructed into a resonant cavity antenna, antenna radiation signals are generated and are emitted through the radiation opening, high radiation efficiency is achieved through the resonant cavity antenna, and antenna performance is improved.

Description

Electronic device

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to electronic equipment.

Background

With the development of communication technology, users have more and more demands on mobile terminals, and the functions of the mobile terminals are more and more, and the antenna design of the terminal device also faces greater challenges.

The working frequency range of the antenna is more and more, along with the appearance requirements such as thinner and thinner fuselage thickness, full metal structure, high screen occupation ratio, the headroom that leads to the antenna is compressed again and again, and the antenna radiation efficiency is low, the performance is unstable, therefore, how to design antenna structure is the current problem that awaits solution.

Disclosure of Invention

The embodiment of the application provides an electronic device, which can solve the problems of low antenna radiation efficiency and unstable performance of the existing terminal device due to appearance requirements.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an electronic device is provided, including: the device comprises a cover plate, a screen, a metal frame and a feed structure;

the cover plate is arranged on one side of the screen, the metal frame body is arranged on one side of the screen, which is far away from the cover plate, the screen and the metal frame body are arranged at intervals, a cavity and a radiation opening are formed between the screen and the metal frame body, the feed structure is arranged on one side of the cover plate where the screen is located, and the feed structure is located on one side of the screen, which faces the radiation opening;

wherein, under the condition that the feed structure works, the feed structure excites the cavity to generate an antenna radiation signal, and the antenna radiation signal is emitted from the radiation opening.

The embodiment of the application discloses electronic equipment, which comprises a cover plate, a screen, a metal frame and a feed structure; the cover plate is arranged on one side of the screen, the metal frame body is arranged on one side of the screen, which is far away from the cover plate, the screen and the metal frame body are arranged at intervals, a cavity and a radiation opening are formed between the screen and the metal frame body, the feed structure is arranged on one side of the cover plate, where the screen is located, and the feed structure is located on one side, which is towards the radiation opening, of the screen; wherein, under the condition that the feed structure works, the feed structure excites the cavity to generate an antenna radiation signal, and the antenna radiation signal is emitted from the radiation opening. Through apron, screen and metal framework formation cavity and radiation opening in this application embodiment, can be through setting up feed structure near the place of radiation opening, when feed structure is exerted the excitation, this cavity is constructed into resonant cavity antenna, produces the antenna radiation signal to emit through the radiation opening, can maximize the inner space that utilizes electronic equipment, and realize high radiation efficiency through resonant cavity antenna, promote antenna performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a portion of an electronic device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a portion of an electronic device according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a direct connection of a feeding structure in an electronic device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a coupling connection of a feeding structure in an electronic device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a feed structure grounded through a capacitor in an electronic device according to an embodiment of the present application;

FIG. 7 is a schematic structural view of an irregular cavity provided by an embodiment of the present application;

fig. 8 is a schematic structural diagram of a dual feed structure provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a dual cavity provided by an embodiment of the present application;

fig. 10 is a circuit schematic of a ground structure provided by an embodiment of the present application.

Wherein,

100-electronic equipment,

201-cover plate, 202-screen

300-metal frame body,

400-a feed structure,

500-cavity,

600-radiation opening,

700-conductive structure,

800-PCB board,

900-capacitance.

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, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

An electronic device 100 provided in the embodiments of the present application is described in detail below with reference to fig. 1 to 10 through specific embodiments and application scenarios thereof.

Fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 may include: a cover plate 201, a screen 202, a metal frame 300 and a feed structure 400.

Specifically, the cover 201 is disposed on one side of the screen 202, the metal frame 300 is disposed on one side of the screen 202 away from the cover 201, the screen 202 and the metal frame 300 are disposed at an interval, a cavity 500 and a radiation opening 600 are formed between the screen 202 and the metal frame 300, the feeding structure 400 is disposed on one side of the cover 201 where the screen 202 is located, and the feeding structure 400 is located on one side of the screen 202 facing the radiation opening 600.

Wherein, in the case of the operation of the feeding structure 400, the feeding structure 400 excites the cavity 500 to generate an antenna radiation signal, and the antenna radiation signal is emitted from the radiation opening 600.

It should be noted that the cavity 500 formed between the screen 202 and the metal frame 300 may be filled with air or a medium, and the material of the medium may be plastic, ceramic, glass, or a mixture of multiple materials. The plastic may be polyamide, polycarbonate or acrylonitrile, butadiene, styrene terpolymer, etc. In practical applications, the hollow cavity 500 is formed between the screen 202 and a part of the metal frame 300, and the structure of the hollow cavity 500 may be a rectangular parallelepiped, a cube with an L-shaped cross section, or a structure with another shape. Similarly, the shape of the radiation opening 600 may be rectangular, L-shaped, or irregular, as the case may be.

The screen 202 may be an in-cell screen, an OLED screen, or other screens 202, which is not limited in this application. The metal frame 300 may be made of aluminum alloy, magnesium alloy, stainless steel, or the like.

Of course, the electronic device 100 in the embodiment of the present application may include, in addition to the above structure, a battery, a camera, a speaker, and other structures, where the battery may include a single battery unit or a plurality of battery units, the material may be nickel hydrogen or lithium ion, and the shape may be rectangular, L-shaped, or other shapes; the number of the cameras can be one, or two or more, and the text is not described one by one in consideration of conciseness.

In the embodiment of the present application, the electronic device 100 includes a cover plate 201, a screen 202, a metal frame 300, and a feeding structure 400; the cover plate 201 is arranged on one side of the screen 202, the metal frame 300 is arranged on one side of the screen 202, which is away from the cover plate 201, the screen 202 and the metal frame 300 are arranged at intervals, a cavity 500 and a radiation opening 600 are formed between the screen 202 and the metal frame 300, the feed structure 400 is arranged on one side of the cover plate, where the screen 202 is located, and the feed structure 400 is located on one side, which is opposite to the cover plate 201, of the screen 202; wherein, in the case of the operation of the feeding structure 400, the feeding structure 400 excites the cavity 500 to generate an antenna radiation signal, and the antenna radiation signal is emitted from the radiation opening 600. In the embodiment of the present application, the cover plate 201, the screen 202, and the metal frame 300 form the cavity 500 and the radiation opening 600, the feed structure 400 may be disposed near the radiation opening 600, when the feed structure 400 is excited, the cavity 500 is configured as a resonant cavity antenna, the cavity is excited by the feed structure 400, an antenna radiation signal is generated, and the antenna radiation signal is emitted through the radiation opening 600, the internal space of the electronic device 100 may be maximally utilized, the number of frame cracks may be reduced as much as possible, more antenna functions may be integrated in the electronic device 100, and high radiation efficiency may be achieved through the resonant cavity antenna, thereby improving antenna performance.

In one possible embodiment of the present application, the conductive structure 700 is filled between the screen 202 and the metal frame 300, and the cavity 500 is formed between the screen 202, the metal frame 300 and the conductive structure 700.

In this embodiment, the cavity is formed by using a gap between the screen 202 and the metal frame 300, and three or more surfaces of the cavity are filled with the conductive structure 700 to form the cavity 500 with an opening on one surface and closed other surfaces, so that the resonant cavity antenna is formed by the above structure, and the radiation efficiency of the electronic device 100 is higher, and the performance of the antenna is better, where the opening is the radiation opening 600 for transmitting the antenna radiation signal.

That is, the first surface of the cavity is the screen 202, the second surface opposite to the first surface is the metal frame 300, three sides connected to the metal frame are the conductive structures 700, and the fourth side is not the radiation opening 600.

The conductive structure 700 may be a conductive foam, a conductive sponge, a conductive adhesive, or a gold-plated conductive fabric foam, or other conductive structures 700, which is not limited in this embodiment.

In one possible embodiment of the present application, a first end of the feeding structure 400 is connected to the conductive structure 700, and a second end of the feeding structure 400 is grounded.

It should be noted that the feeding structure 400 is disposed within the range of the black edge of the screen 202, that is, the cover 201 faces the screen 202 and exceeds the screen 202.

One to two matching positions may be reserved at the end of the feed structure 400, and the feed structure 400 may be grounded after matching, so as to adjust the frequency range of the antenna radiation signal.

In one possible embodiment of the present application, the feed structure 400 is grounded through capacitance and/or inductance.

That is, the matching of the feeding structure 400 may be a capacitor or an inductor, and the operating frequency of the cavity antenna may be changed by providing different capacitors 900 or inductors.

In one possible embodiment of the present application, the electronic device 100 further includes a PCB board 800, and the PCB board 800 is electrically connected to the feeding structure 400.

That is, after the power feeding structure 400 is powered by the PCB 800, the power feeding structure 400 excites the cavity 500 to generate an antenna radiation signal.

The connection structure of the feeding structure 400 and the PCB 800 may be connected by a cable, or may be connected by a Printed Circuit Board (PCB) or may be connected by a metal structure, such as a spring, pogo-pin, or a screw pad. If the connection is made through a cable, the cable may be fastened to the feeding structure 400, and a cable seat is correspondingly attached to the feeding structure 400, or an inner core of the cable may be directly welded to the feeding structure 400 for feeding.

That is, the feeding mode may be a cable mode, or a printed circuit board wiring mode, or may be implemented by a metal structure, such as a spring, pogo-pin, or a screw pad.

Taking a cable feeding form as an example, the feeding structure 400 is disposed at a position where the radiation opening 600 is located, may be disposed at a position close to the conductive structure 700 on any side, may be connected by welding, may be connected by adhering with a conductive adhesive, and may also be connected in other manners, which are not listed in this application.

Further, the power feeding structure 400 is an FPC board, a portion of the FPC board is attached to one side of the cover plate 201 facing the metal frame 300, and another portion of the FPC board is attached to one side of the screen 202 facing the metal frame.

That is to say, the FPC board may directly contact with the screen 202 to form a whole in a form of direct feeding, may be attached to the screen 202 by a conductive adhesive, may also be connected by a welding method, and may also adopt other methods, which are not listed in this application.

In other embodiments, the power feeding structure 400 is an FPC board attached to one side of the cover plate 201 facing the metal frame 300, and the FPC board is spaced from the screen 202.

That is, in the form of coupling feeding, there is a gap between the FPC board and the screen 202, through which the excitation cavity 500 is coupled, forming an antenna radiation signal. Wherein the size of the gap can be 0.3mm-0.5 mm.

In a specific embodiment of the present application, the screen 202 is an in-cell screen, and a stainless steel cover is disposed on a side of the screen 202 away from the cover plate 201, and the feeding structure 400 may extend onto the steel cover to be electrically connected thereto. Specifically, the feeding structure may be connected to the steel cover by a conductive adhesive, or connected to the steel cover by welding, or directly attached to the steel cover by a non-conductive adhesive in a large area, in which case the feeding structure 400 may be considered to be connected because the gap between the feeding structure and the steel cover is small and the coupling capacitance is large.

In another embodiment of the present application, the screen 202 is an OLED screen, and a layer of copper foil is disposed on a side of the screen 202 away from the cover plate 201, and at this time, the feeding structure 400 may be directly adhered to the copper foil by using a conductive adhesive or directly attached to the copper foil in a large area by using a non-conductive adhesive, and at this time, since a gap between the feeding structure 400 and the copper foil is small, the coupling capacitance is large, and it can be regarded as a connection.

In one possible embodiment of the present application, the number of the radiation openings 600 is two, and the number of the feeding structures 400 is two.

That is, signals covering two frequencies can be realized by providing two openings to form a double-fed common-resonator antenna.

Alternatively, the number of the cavities 500 is plural, the number of the radiation openings 600 is plural, and the number of the feed structures 400 is the same as the number of the radiation openings 600.

It can also be said that a plurality of resonator antennas may be disposed in one electronic device 100 to implement a multi-frequency operating range, so that the electronic device 100 can operate in multiple frequency bands to implement a multi-transmit multi-receive (MIMO) communication function.

That is, a plurality of cavities 500 may be formed, and a plurality of feeding structures 400 are correspondingly required, so that the electronic device 100 can operate in different frequency bands to meet different requirements of users.

The number of the radiation openings 600 may be the same as that of the cavities 500, and the number of the radiation openings 600 may also be different from that of the cavities 500, for example, one cavity 500 has two radiation openings 600, and correspondingly, the feed structure 400 may also have two. The number of the structures is subject to practical application, and the embodiments of the present application are not particularly limited.

In one possible embodiment of the present application, the cavity 500 is filled with a medium, and the medium is one of air, plastic, ceramic, and glass.

In this embodiment, the cavity 500 formed between the screen 202 and the metal frame 300 may be filled with air or a medium, and the material of the medium may be plastic, ceramic, glass, or a mixture of multiple materials. The plastic may be polyamide, polycarbonate or acrylonitrile, butadiene, styrene terpolymer, etc. By filling the cavity with media of different dielectric constants, the operating frequency of the cavity can be shifted lower than for air filling. For example, the base film shifts from 3.2GHz to 2GHz when filled with air and plastic (dielectric constant 3.5, loss tangent 0.007).

In one possible embodiment of the present application, the electronic device 100 may further include a grounding structure, the grounding structure is disposed in the cavity 500, a first end of the grounding structure is connected to the screen 202, and another end of the grounding structure is connected to the metal frame 300.

That is, a grounding structure may be disposed in the cavity 500 formed by the screen 202 and the metal frame 300, one end of the grounding structure is connected to the screen 202, and the other end is connected to the metal frame 300, and the grounding structure may adjust the operating frequency of the cavity antenna, thereby achieving the covering effect of multiple bands and large bandwidth.

The number of the grounding structures may be one, two or more, the positions of the grounding structures may be closer or farther relative to the radiation opening 600, and the closer the grounding structures are to the radiation opening 600, the higher the working frequency of the resonant cavity antenna is, that is, the working frequency band of the resonant cavity antenna may be adjusted by setting the positions of the grounding structures, so that the resonant cavity antenna operates in a high frequency band or a low frequency band, etc. The resonant cavity antenna can be adjusted to operate in different frequency bands by providing a plurality of grounding structures and controlling the operating state of each grounding structure, such as connection or disconnection between the screen 202 and the metal frame 300.

Specifically, the grounding structure may be formed by a plurality of structures such as a spring plate or a pogo pin (pogo-pin), a screw plus a gasket, or the like, and the grounding structure may also be a retaining wall or other grounding points, or the like.

In this embodiment, the resonant frequency of the cavity can be changed by adding the above-mentioned grounding structure at a specific position in the cavity.

Further, the grounding structure may be connected to the metal frame 300 through a connecting device, or the grounding structure may be connected to the screen 202 through a connecting device, which is based on the actual situation.

Wherein the connection means may comprise a capacitance and/or an inductance. That is, the grounding structure can be connected with the metal frame 300 or the screen 202 through the capacitor or the inductor, so that the working frequency range of the resonant cavity antenna can be adjusted, the resonant cavity antenna can work in different frequency ranges, the working frequency range of the resonant cavity antenna is wider, and the multi-band requirements of users are met. The working frequency band of the resonant cavity antenna can be further increased by adjusting the capacitance value or the inductance value of the capacitance or the inductance.

The capacitance of the capacitor may be 0.3pF, 0.5pF, 1.0pF, 3pF, 12pF, etc., the inductance of the inductor may be 0.5nH, 1.0nH, 5nHpF, 15nH, 30nH, etc., the capacitance of the capacitor may also be 0, the inductance of the inductor may also be 0, that is, the grounding structure is directly connected to the screen 202 and the metal frame 300, specifically, the practical application is used as the standard.

Further, the connection device may further include a single-pole double-throw switch, the first end of the capacitor and the first end of the inductor are both connected to the second end of the ground structure, the second end of the capacitor is connected to the first movable contact of the single-pole double-throw switch, the second end of the inductor is connected to the second movable contact of the single-pole double-throw switch, and the fixed contact of the single-pole double-throw switch is connected to the metal frame 300.

It should be noted that the single-pole double-throw switch may also be replaced by a single-pole single-throw switch, a single-pole three-throw switch, a single-pole four-throw switch, a double-pole single-throw switch, and the like, and accordingly, for example, a single-pole single-throw switch is adopted, one end of the single-pole single-throw switch is connected with a capacitor or an inductor, the other end of the single-pole single-throw switch is connected with the metal frame 300, and for example, a double-pole single-throw switch is adopted, a movable contact end of the double-pole single-throw switch is respectively connected with the capacitor and the inductor, a fixed contact end of the double-pole single-throw switch is connected with the metal frame 300, a parallel structure of the capacitor and the inductor can be connected into a circuit structure through the switch being closed, and the screen 202 can be disconnected from the metal frame 300 through the switch being disconnected. The specific connection structure is subject to actual requirements.

In this embodiment, the operating frequency of the resonant cavity antenna can be controlled by controlling the on-state of the single-pole double-throw switch, the capacitance value, the inductance value and the like, so that the resonant cavity antenna can achieve the covering effect of multiple frequency bands and large bandwidth, and various requirements of users are met.

In one possible embodiment of the present application, the frequency of the antenna radiated signal may be varied by varying the volume of the cavity 500.

That is, the position of the conductive structure 700 can be changed, that is, the length of each side thereof can be adjusted according to the requirement, so as to realize different radio frequency requirements of the resonant cavity antenna. The structure surrounded by the conductive structure 700 may be rectangular, polygonal, or other shapes.

In the embodiments of the present application, the purpose of changing the size of the cavity and adding a grounding structure such as a retaining wall or a grounding point at a specific position in the cavity is to realize the tuning of the resonant frequency of the cavity by changing the electrical size or boundary conditions of the cavity. Because the end of the feed structure 400 is located at the cavity radiation slot, usually near the strong electric field region, the loading capacitance can make the cavity resonant frequency lower, and on the contrary, the loading inductance is higher.

In one embodiment of the present application, due to the strong directivity of the cavity antenna, radiation is performed only through the single radiation opening 600, and the maximum radiation direction of the cavity antenna is usually located in the upper half of the edge of the screen 202 where the radiation opening 600 is located (i.e. the maximum direction is usually close to the normal direction of the screen 202), and is highly related to the metal frame 300 facing the cavity radiation opening 600, for example, the higher the height of the metal frame 300 is, the more easily the cavity pattern deviates from the normal direction of the screen 202, but the whole cavity pattern is still in the direction faced by the screen 202.

When the electronic device 100 is held by a vertical screen or a horizontal screen, the maximum radiation direction of the cavity antenna is not easy to face the human body compared to the conventional metal frame antenna. For a conventional antenna, a hand can directly contact an antenna radiator, and for a resonant cavity antenna, the hand only holds a metal frame (the metal frame is only a floor for the resonant cavity antenna) opposite to the antenna radiation opening 600, so that the influence of absorption by a human body is relatively small.

The position of the resonant cavity antenna in the embodiment of the present application may be located at any position of the electronic device 100, and preferably, the resonant cavity antenna is located at a frame of the electronic device 100, that is, the radiation opening 600 is located at the frame of the electronic device 100, so that the radiation signal can be better emitted.

The operating frequency range of a cavity antenna may be: 700-960 MHz at low frequency, 1400-1600 MHz at low and medium frequencies, 1700-2700 MHz at medium and high frequencies, and 3300-3800 MHz and 4400-5000 MHz in 5G NR; besides, the relevant frequency bands such as GNSS, WIFI/BT and the like may need to be covered. The resonant cavity antenna can work in a single frequency band or in multiple frequency bands, and the practical application is taken as the standard.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electronic device, comprising: the device comprises a cover plate, a screen, a metal frame and a feed structure;

2. The electronic device of claim 1, wherein a conductive structure is filled between the screen and the metal frame, and the cavity is formed between the screen, the metal frame, and the conductive structure.

3. The electronic device of claim 2, wherein a first end of the feed structure is connected to the conductive structure and a second end of the feed structure is connected to ground.

4. An electronic device according to claim 3, characterized in that the feed structure is connected to ground via a capacitance and/or an inductance.

5. The electronic device of claim 1, further comprising a PCB board electrically connected to the feed structure.

6. The electronic device of claim 5, wherein the power feeding structure is an FPC board, a portion of the FPC board is attached to a side of the cover plate facing the metal frame, and another portion of the FPC board is attached to a side of the screen facing the metal frame.

7. The electronic device of claim 5, wherein the power feeding structure is an FPC board attached to a side of the cover plate facing the metal frame, and the FPC board is spaced from the screen.

8. The electronic device of claim 1, wherein the number of cavities is plural, the number of radiation openings is plural, and the number of feed structures is the same as the number of radiation openings.

9. The electronic device of claim 1, further comprising a grounding structure disposed in the cavity, wherein a first end of the grounding structure is connected to the screen, and another end of the grounding structure is connected to the metal frame.

10. The electronic device of claim 9, wherein the grounding structure comprises a capacitance and/or an inductance.