Electronic devices

Abstract

The present application discloses an electronic device, which relates to the field of electronic technology. The electronic device includes: a screen body, which is foldable, and when the screen body is in a folded state, the screen body forms a cavity; an antenna component, which is arranged on the screen body, and when the antenna component is in a working state, the antenna component excites the cavity to generate a first cavity surface current on the screen body; a reverse excitation component, which is arranged on the screen body, and when the antenna component generates the first cavity surface current, the reverse excitation component excites the cavity to generate a second cavity surface current on the screen body, and the second cavity surface current weakens the first cavity surface current.

Description

Technical Field

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

[0002] With the rapid development of electronic technology, electronic devices such as mobile phones and tablets are becoming increasingly popular and an integral part of people's daily lives. Foldable displays, an increasingly common screen component in electronic devices, can be placed in either a folded or unfolded state. In the folded state, the screen area is reduced; in the unfolded state, the screen area is expanded, meeting users' demands for both portability and large screen sizes.

[0003] However, when the foldable display is folded, it forms a cavity. When the antenna is operating, it excites resonant noise within this cavity. This resonant noise causes surface currents to flow on the conductive surfaces of the display on both sides of the cavity. These surface currents weaken the antenna current, reducing the antenna's radiation efficiency. Summary of the Invention

[0004] The present application aims to provide an electronic device that at least solves one of the problems of reduced radiation efficiency of the antenna due to cavity surface current generated by antenna excitation.

[0005] An embodiment of the present application provides an electronic device, including:

[0006] A screen body, wherein the screen body is foldable and forms a cavity when the screen body is in a folded state;

[0007] an antenna assembly, disposed on the screen body, and when the antenna assembly is in an operating state, the antenna assembly excites the cavity to generate a first cavity surface current on the screen body;

[0008] A reverse excitation component is arranged on the screen body. When the antenna component generates the first cavity surface current, the reverse excitation component excites the cavity to generate a second cavity surface current on the screen body, and the second cavity surface current weakens the first cavity surface current.

[0009] In an embodiment of the present application, when the screen of an electronic device is in a folded state, an antenna assembly disposed on the screen can excite the screen's cavity, generating a first cavity surface current on the screen; and a reverse excitation assembly disposed on the screen can also excite the cavity to generate a second cavity surface current on the screen, and the second cavity surface current weakens the first cavity surface current. In this way, the reverse excitation assembly excites the cavity to generate the second cavity surface current, weakening the first cavity surface current generated by the antenna assembly's excitation cavity. This can reduce the impact of the excitation cavity on the antenna assembly's own radiation efficiency, thereby improving the antenna assembly's radiation efficiency.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 is a schematic structural diagram of an embodiment of an electronic device provided by this application;

[0013] Figure 2 is a schematic structural diagram of an antenna assembly and a reverse excitation assembly in an embodiment of an electronic device provided by this application;

[0014] Figure 3 is a schematic diagram of current distribution in an embodiment of an electronic device provided by this application;

[0015] Figure 4 is another schematic diagram of current distribution in an embodiment of the electronic device provided by this application;

[0016] Figure 5 is a schematic diagram of a partial structure of an embodiment of an electronic device provided in this application;

[0017] Figure 6 is another schematic diagram of current distribution in an embodiment of the electronic device provided by this application;

[0018] Figure 7 is another schematic diagram of a partial structure of an embodiment of an electronic device provided by the present application;

[0019] Figure 8 is another schematic diagram of current distribution in an embodiment of the electronic device provided by this application;

[0020] Figure 9 It is another schematic diagram of a partial structure of an embodiment of an electronic device provided in this application. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0025] See Figure 1 , is a schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Figure 1 As shown, the electronic device includes:

[0026] The screen body 10 is foldable. When the screen body 10 is in the folded state, the screen body 10 forms a cavity 100;

[0027] The antenna assembly 20 is provided on the screen body 10 , and when the antenna assembly 20 is in an operating state, the antenna assembly 20 excites the cavity 100 to generate a first cavity surface current on the screen body 10 ;

[0028] The reverse excitation component 30 is arranged on the screen body 10. When the antenna component 20 generates a first cavity surface current, the reverse excitation component 30 excites the cavity 100 to generate a second cavity surface current on the screen body 10, and the second cavity surface current weakens the first cavity surface current.

[0029] In an embodiment of the present application, when the screen 10 of the electronic device is in a folded state, the antenna assembly 20 disposed on the screen 10 can excite the cavity 100 of the screen 10, thereby generating a first cavity surface current on the screen 10; and the reverse excitation assembly 30 disposed on the screen 10 can also excite the cavity 100 to generate a second cavity surface current on the screen 10, and the second cavity surface current will weaken the first cavity surface current. In this way, by exciting the cavity 100 with the second cavity surface current generated by the reverse excitation assembly 30, the first cavity surface current generated by the antenna assembly 20 in the cavity 100 is weakened, thereby reducing the impact of the antenna assembly 20's own radiation efficiency caused by the excitation of the cavity 100, thereby improving the radiation efficiency of the antenna assembly 20.

[0030] In the embodiment of the present application, the electronic device includes a screen body 10, and the screen body 10 is foldable.

[0031] The screen body 10 may include a housing, a screen layer, and a circuit board, wherein the screen layer may be embedded in the housing, and the circuit board may be disposed within a receiving space formed by the housing and the screen layer. Of course, the screen body 10 may also include other components, for example, components disposed on the circuit board.

[0032] The screen body 10 is foldable so as to be in a folded state, and when the screen body 10 is in the folded state, the screen body 10 forms a cavity 100. Of course, the screen body 10 can also be in an unfolded state.

[0033] Specifically, the screen body 10 may include two screen body parts, which may be flipped relative to each other so that the screen body 10 is folded. When the screen body 10 is in the folded state, the cavity 100 is formed between the two screen body parts.

[0034] The above-mentioned two screen parts refer to the screen parts located on both sides of the fold when the screen 10 is in a folded state. When the screen 10 is in a folded state, each screen part may include a flat part and a curved part, and the curved parts of the two screen parts are connected, so that the screen 10 is a whole.

[0035] It should be noted that the two screen parts can be connected by a hinge, etc., or the screen 10 can be a flexible screen and the two screen parts can be integral. The folded state can be understood as a state in which the screen 10 is bent to form an angle less than or equal to a threshold angle. For example, in the folded state, the angle between the two screen parts can be less than or equal to 5°, etc. The unfolded state can be understood as a state in which the angle between the two screen parts is greater than the threshold angle.

[0036] When the screen bodies 10 are in a folded state, there are gaps between the screen bodies 10, so that the screen bodies 10 have a cavity 100. The cavity 100 may be a space with one side closed and the other three sides except the screen body 10 being open.

[0037] For example, when the above-mentioned screen body 10 is in a folded state, the planar parts of the two screen body parts are spaced apart, and the gap is closed on one side of the curved parts of the two screen body parts, while the other three sides outside the side of the curved parts of the two screen body parts are open, so that the screen body 10 forms a cavity 100 with one side closed and three sides open.

[0038] In the embodiment of the present application, the electronic device further includes an antenna assembly 20 , which is disposed on the screen body 10 .

[0039] The antenna assembly 20 may be a component that enables an electronic device to receive and transmit radio frequency signals. For example, the antenna assembly 20 may include an antenna 21, a matching network 22, and a radio frequency transceiver 23. The antenna 21 is connected to the radio frequency transceiver 23 via the matching network 22, forming a carrier signal path from the radio frequency transceiver 23 to the antenna 21. The carrier signal is used to transmit the carrier signal.

[0040] The antenna assembly 20 is disposed on the screen 10, and can be disposed on any screen portion of the screen 10. For example, when the screen 10 includes a screen portion 1 and a screen portion 2, the antenna 21 of the antenna assembly 20 is disposed on the frame of the screen portion 1, and the matching network 22 and the RF transceiver 23 are disposed within the screen portion 1, and so on.

[0041] The antenna assembly 20 is provided on the screen body 10, or the antenna assembly 20 is provided on the two screen body parts. Figure 2As shown, the antenna assembly 20 may include a sub-antenna 1 and a sub-antenna 2, the sub-antenna 1 and the sub-antenna 2 are connected in parallel to the matching network 22, and the sub-antenna 1 is arranged on the frame of the above-mentioned screen body 1, the sub-antenna 2 is arranged on the frame of the above-mentioned screen body 2, and the matching network 22 and the RF transceiver 23 are arranged in the screen body 1 or the screen body 2; or, the antenna assembly 20 may include two antenna 21 subassemblies, each antenna 21 subassembly includes an antenna 21, a matching network 22 and a RF transceiver 23, and the two antenna 21 subassemblies are respectively arranged in the above-mentioned screen body 1 and the screen body 2, and so on.

[0042] When the above-mentioned antenna assembly 20 is in working state, the antenna assembly 20 will excite the cavity 100, so that a resonant wave is formed in the cavity 100, and the resonant wave will generate a first cavity surface current on the screen body 10, and the direction of the first cavity surface current is opposite to the direction of the current on the antenna 21 in the antenna assembly 20.

[0043] The first cavity surface current generated on the screen 10 may be generated by the resonant wave on a conductive screen layer of the screen 10. For example, the first cavity surface current may be generated on an indium tin oxide (ITO) layer of the screen 10.

[0044] In the embodiment of the present application, the electronic device further includes a reverse excitation component 30 , which is disposed on the screen body 10 .

[0045] The reverse excitation component 30 may be a component capable of exciting the cavity 100 to generate a second cavity surface current on the screen 10 .

[0046] For example, the above-mentioned reverse excitation component 30 may include a reverse excitation source and a signal transmitter. The signal transmitter can generate an electrical signal and transmit it to the reverse excitation source. Under the action of the electrical signal, the reverse excitation source forms a resonant wave in the cavity 100, so that the resonant wave generates a second cavity surface current on the screen body 10.

[0047] The reverse excitation component 30 is disposed on the screen 10, and the reverse excitation component 30 may be disposed on one screen portion. For example, when the antenna 21 of the antenna component 20 is disposed on the frame of the screen portion 1, the reverse excitation source of the reverse excitation component 30 may be disposed on the screen portion 1 or the screen portion 2.

[0048] In the case where the antenna assembly 20 includes multiple antennas 21 or multiple sub-antenna assemblies, the reverse excitation assembly 30 may also include multiple reverse excitation sources 31. The multiple reverse excitation sources 31 correspond one-to-one to the multiple antennas 21 or multiple sub-antenna assemblies, and the cavity surface current generated by each reverse excitation source 31 on the screen 10 has a weakening effect on the cavity surface current generated by the corresponding antenna 21 or sub-antenna assembly. In this case, the reverse excitation assembly 30 may be set on the screen 10.

[0049] It should be noted that the setting position of the above-mentioned reverse excitation component 30 in the screen body 10 can be set according to actual needs. It is only necessary to realize that the second cavity surface current generated by the reverse excitation component 30 exciting the cavity 100 has a weakening effect on the first cavity surface current generated by the excitation cavity 100 generated by the antenna component 20.

[0050] For example, the reverse excitation component 30 and the antenna component 20 may be arranged on the same screen body 10, and the position of the reverse excitation source of the reverse excitation component 30 and the position of the antenna 21 of the antenna component 20 may be symmetrically arranged relative to the center point of the screen body 10, and so on.

[0051] The second cavity surface current is a surface current capable of weakening the first cavity surface current. Specifically, the phase difference between the input signal of the reverse excitation component 30 and the carrier signal of the antenna 21 may be greater than 90° and less than 270°, so that the phase difference between the second cavity surface current and the first cavity surface current is also greater than 90° and less than 270°, thereby causing the second cavity surface current to weaken the first cavity surface current.

[0052] The input signal of the reverse excitation component 30 may refer to a signal input into the reverse excitation source in the reverse excitation component 30 .

[0053] For example, the phase difference between the input signal of the reverse excitation component 30 and the carrier signal of the antenna 21 may be 120° or 150°, and so on.

[0054] Since the ability of the second cavity surface current to weaken the first cavity surface current is also related to the signal amplitude of the input signal of the reverse excitation component 30, the signal amplitude of the input signal of the reverse excitation component 30 can be set to be greater than or equal to the preset signal amplitude.

[0055] For example, when the phase difference between the signal phase of the input signal of the above-mentioned reverse excitation component 30 and the signal phase of the carrier signal of the antenna 21 is 120°, the signal amplitude of the input signal of the reverse excitation component 30 can be set to be greater than the signal amplitude of the carrier signal of the antenna 21, and so on.

[0056] In some embodiments, the signal amplitude of the input signal of the reverse excitation component 30 is the same as the signal amplitude of the carrier signal of the antenna 21; and the phase difference between the signal phase of the input signal of the reverse excitation component 30 and the signal phase of the carrier signal of the antenna 21 is 180°.

[0057] In this embodiment, the input signal of the reverse excitation component 30 is set to satisfy: the signal amplitude is the same as the signal amplitude of the carrier signal of the antenna 21, and the signal amplitude is the same as the signal amplitude of the carrier signal of the antenna 21, so that the surface current of the second cavity can offset the surface current of the first cavity, thereby further improving the radiation efficiency of the antenna component 20.

[0058] The reverse excitation component 30 may be a component independently provided from the antenna component 20 , that is, as described above, the reverse excitation component 30 may include a reverse excitation source 31 and a signal transmitter, and the input signal of the reverse excitation source 31 is generated by the signal transmitter.

[0059] In some embodiments, as Figure 2 As shown, the reverse excitation component 30 includes:

[0060] A reverse excitation source 31 is provided on the screen body 10;

[0061] a coupler 32 , the coupler 32 being electrically connected to a carrier signal path of the antenna assembly 20 ;

[0062] A phase shifter 33 , the phase shifter 33 is electrically connected between the reverse excitation source 31 and the coupler 32 ;

[0063] When the antenna assembly 20 is in operation, the coupler 32 transmits the carrier signal in the carrier signal channel to the reverse excitation source 31 through the phase shifter 33 .

[0064] In this embodiment, the reverse excitation source 31 can be connected to the carrier signal channel of the antenna assembly 20 through the phase shifter 33 and the coupler 32, so as to obtain a coupled signal from the carrier signal and convert it into an input signal of the reverse excitation source 31, thereby not only reducing the energy consumption of the electronic device, but also improving the ability of the second cavity surface current to weaken the first cavity surface current.

[0065] The coupler 32 is connected to the carrier signal channel of the antenna assembly 20 and can obtain a coupled signal from the carrier signal channel of the antenna assembly 20 as the signal source of the reverse excitation source 31. For example, the coupler 32 can be connected between the matching network 22 and the RF transceiver 23, and the coupler 32 can obtain a coupled signal from the carrier signal transmitted by the RF transceiver 23.

[0066] The above-mentioned phase shifter 33 is connected between the coupler 32 and the reverse excitation source 31, and the phase shifter 33 can adjust the signal phase of the coupling signal obtained by the coupler 32 so that the phase difference between the signal phase of the adjusted coupling signal and the signal phase of the carrier signal is greater than 90° and less than 270°, and the adjusted coupling signal is input as an input signal to the reverse excitation source 31.

[0067] For example, when the reverse excitation component 30 includes the coupler 32 , the phase shifter 33 and the reverse excitation source 31 , the principle of the second cavity surface current weakening the first cavity surface current is as follows:

[0068] like Figure 3 As shown, the signal phase of the carrier signal of the antenna assembly 20 is Φ ant After the antenna assembly 20 excites the cavity 100 resonant mode, the phase change is Φ a2i At this time, the current phase of the current on the surface of the cavity 100 (i.e., the first cavity surface current) is Φ1 = Φ ant +Φ a2i The reverse excitation source 31 is obtained from the carrier signal through the coupler 32. The path from the antenna 21 to the reverse excitation source 31 is fixed after the design is completed, that is, the phase change on this path is fixed, denoted as Φ path The phase value adjusted by the phase shifter 33 on this path is a variable denoted as Φ offset Similarly, after the reverse excitation source 31 excites the cavity 100 resonant mode, the current phase changes to Φ s2i Therefore, the current phase of the cavity surface current (i.e., the second cavity surface current) excited by the reverse excitation source 31 is Φ2=Φ ant +Φ path +Φ offset +Φ s2i .

[0069] Then, the phase difference between the two currents Φ2–Φ1=Φ ant +Φ path +Φ offset +Φ s2i –Φ ant –Φ a2i =Φ path +Φ offset +Φ s2i –Φ a2i =Φ fix +Φ offset , where Φ fix =Φ path +Φ s2i –Φ a2i , which is a fixed value in electronic equipment and can be obtained through actual measurement. Therefore, Φ can be adjusted by the phase shifter 33offset Make Φ2–Φ1=180°, that is, the two currents cancel each other out in opposite directions, such as Figure 4 shown.

[0070] In some embodiments, the reverse excitation component 30 further includes:

[0071] The low noise amplifier 34 is connected in series between the coupler 32 and the reverse excitation source 31 .

[0072] In this embodiment, by setting a low-noise amplifier 34 in series between the coupler 32 and the reverse excitation source 31, the line insertion loss on the signal transmission channel from the coupler 32 to the reverse excitation source 31 can be compensated by the low-noise amplifier 34, so that the signal amplitude of the input signal of the reverse excitation source 31 can be made the same as the signal amplitude of the carrier signal, further improving the radiation efficiency of the antenna 21.

[0073] The above-mentioned low-noise amplifier 34 is connected in series between the coupler 32 and the reverse excitation source 31. The low-noise amplifier 34 can be located between the coupler 32 and the above-mentioned phase shifter 33, or the low-noise amplifier 34 can be located between the phase shifter 33 and the reverse excitation source 31, and the low-noise amplifier 34 can compensate for the line insertion loss on the signal transmission channel from the coupler 32 to the reverse excitation source 31.

[0074] In an embodiment of the present application, in order to avoid the reverse excitation component 30 from being in operation and losing electric energy when the antenna component 20 does not form the first cavity surface current, a control module connected to the reverse excitation component 30 can be provided in the electronic device. The control module is used to control the reverse excitation component 30 to stop working when the screen body 10 is in the expanded state.

[0075] In some embodiments, the reverse excitation component 30 further includes:

[0076] a switch unit (not shown), the switch unit being connected in series between the coupler 32 and the reverse excitation source 31;

[0077] Wherein, when the screen body is in the folded state and the antenna assembly 20 is in the working state, the switch unit conducts the signal transmission channel between the coupler 32 and the reverse excitation source 31;

[0078] When the screen body 10 is flipped to the unfolded state, the switch unit disconnects the signal transmission channel between the coupler 32 and the reverse excitation source 31 .

[0079] In this embodiment, a switch unit is provided between the coupler 32 and the reverse excitation source 31, so that when the screen body 10 is in the unfolded state, the switch unit can disconnect the signal transmission channel between the coupler 32 and the reverse excitation source 31, thereby avoiding the reverse excitation component 30 from being in operation when the antenna component 20 does not form the first cavity surface current, thereby realizing the power consumption of the electronic device, and the structure is simple and easy to implement.

[0080] The switch unit is connected in series between the coupler 32 and the reverse excitation source 31 . The switch unit may be arranged between the coupler 32 and the phase shifter 33 , or between the phase shifter 33 and the reverse excitation source 31 .

[0081] In some embodiments, as Figure 5 As shown, the screen body 10 includes:

[0082] a first circuit board 11;

[0083] The first screen layer 12 is arranged opposite to the first circuit board 11 and spaced apart from each other.

[0084] The reverse excitation assembly 30 may include:

[0085] A first metal shielding layer 35 is attached to one side of the first screen layer 12 and is located between the first circuit board 11 and the first screen layer 12 ;

[0086] A first conductive member 36 is disposed between the first metal shielding layer 35 and the first circuit board 11 and is electrically connected to the first metal shielding layer 35 and the first circuit board 11;

[0087] In this embodiment, the reverse excitation component 30 includes a first metal shielding layer 35 and a first conductive member 36 disposed between the first circuit board 11 and the first screen layer 12 , so that the reverse excitation component 30 has a simple structure and is easy to implement.

[0088] The first circuit board 11 may be a circuit board that can transmit the input signal of the reverse excitation component 30 , and may be a main circuit board of the electronic device, or may be another circuit board other than the main circuit board.

[0089] For example, the above-mentioned carrier signal channel and the above-mentioned coupler 32 and phase shifter 33 are provided on the above-mentioned first circuit board 11, and the first conductive member 36 connects the first metal shielding layer 35 with the phase shifter 33 through the line on the first circuit board 11, so that the first conductive member 36 and the first metal shielding layer 35 form the reverse excitation source 31 in the reverse excitation component 30, and so on.

[0090] The above-mentioned screen body may also include a first middle frame 13 and a first glass layer 14. The first middle frame 13 is located between the first metal shielding layer 35 and the first circuit board 11, and is used to support the above-mentioned first circuit board 11, and the first conductive member 36 can pass through the middle frame 13 and be connected to the first metal shielding layer 35; the first glass layer 14 is attached to the side of the first screen layer 12 away from the first metal shielding layer 35, and is used to protect the first screen layer 12.

[0091] The above-mentioned first conductive member 36 is arranged between the first metal shielding layer 35 and the first circuit board 11. The first conductive member 36 can be located at any position of the screen body 10. For example, it can be the connection position between the first conductive member 36 and the first circuit board 11, and the orthographic projection on the first screen layer 12 is located at the center of the first screen layer 12, and so on.

[0092] In some embodiments, as Figure 6 As shown, the orthographic projection of the first conductive member 36 on the screen body 10 is located in the maximum current region A or the minimum electric field region of the first cavity surface in the screen body 10 .

[0093] In this embodiment, by setting the positive projection of the first conductive member 36 on the screen body 10, it is located in the maximum current point area A or the minimum electric field area of ​​the first cavity surface current of the screen body 10, thereby enhancing the weakening performance of the second cavity surface current generated by the reverse excitation component 30 on the first cavity surface current.

[0094] The maximum current region refers to the distribution area on the screen 10 where the maximum current is present among the currents on the surface of the first cavity; the minimum electric field region refers to the distribution area where the minimum electric field is present among the electric fields generated on the screen 10 by the currents on the surface of the first cavity. Typically, the maximum current region on the screen 10 matches the minimum electric field region.

[0095] In some embodiments, as Figure 7 As shown, the screen body 10 includes:

[0096] A second circuit board 15;

[0097] A second screen layer 16 , the second screen layer 16 is spaced apart from the second circuit board 15 ;

[0098] The second metal shielding layer 18 is attached to a side of the second screen layer 16 close to the second circuit board 15 .

[0099] The reverse excitation assembly 30 may include:

[0100] A coupling feeder 37 is provided in the gap between the second circuit board 15 and the second screen layer 16 and is spaced apart from the second metal shielding layer 18 ;

[0101] The second conductive element 38 is electrically connected to the coupling feed element 37 and the second circuit board 15 .

[0102] In this embodiment, the reverse excitation component 30 includes the second conductive member 38 and the coupling feed member 37 , so that the reverse excitation component 30 can be implemented in a more flexible and diverse manner, and has a simple structure and is easy to implement.

[0103] The second circuit board 15 may be a circuit board that can transmit the input signal of the reverse excitation component 30 , and may be a main circuit board of the electronic device or another circuit board other than the main circuit board.

[0104] The above-mentioned screen body may also include a second middle frame 17 and a second glass layer (unnumbered), etc. The second middle frame 17 is located between the second metal shielding layer 18 and the second circuit board 15, and is used to support the above-mentioned second circuit board 15, and the second conductive member 38 and the coupling feeder 37 can be located in the middle frame 13; the second metal shielding layer 18 is attached to the side of the second screen layer 16 close to the second circuit board 15; the second glass layer is attached to the side of the second screen layer 16 away from the second metal shielding layer 18, and is used to protect the second screen layer 16.

[0105] The coupling feeder 37 is arranged between the second circuit board 15 and the second screen layer 16. The coupling feeder 37 can be located at any position of the screen body 10. For example, the coupling feeder 37 and its orthographic projection on the second screen layer 16 can be located at the center of the second screen layer 16, etc.

[0106] In some embodiments, as Figure 8 As shown, the orthographic projection of the coupling feeding element 37 on the screen 10 is located in the minimum current region or the maximum electric field region of the first cavity surface current on the screen 10 .

[0107] In this embodiment, by setting the positive projection of the coupling feed element 37 on the screen body 10, it is located in the current minimum area or electric field maximum area of ​​the first cavity surface current of the screen body 10, thereby enhancing the weakening performance of the second cavity surface current generated by the reverse excitation component 30 on the first cavity surface current.

[0108] The minimum current region refers to the region on the screen 10 where the antenna assembly 20 is located, where the minimum current is distributed among the first cavity surface currents; the maximum electric field region refers to the region on the screen 10 where the maximum electric field is distributed among the electric fields generated by the first cavity surface currents. Typically, the minimum current region on the screen 10 matches the maximum electric field region.

[0109] In some embodiments, as Figure 9 As shown, the screen body 10 includes:

[0110] The frame 19 , the antenna assembly 20 and the reverse excitation assembly 30 are at least partially spaced apart from each other on the frame 19 .

[0111] In this embodiment, by disposing at least a portion of the reverse excitation component 30 and the antenna 21 on the frame 19 at intervals, the disposition of the reverse excitation component 30 is made more flexible.

[0112] The screen body 10 includes the frame 19 , which may be an outer frame of the screen body 10 in which the antenna assembly 20 is disposed.

[0113] For example, the antenna 21 of the antenna assembly 20 may be disposed on the frame 19 of the screen 1 , and the reverse excitation source 31 of the reverse excitation assembly 30 may be disposed on the frame 19 of the screen 1 and spaced apart from the antenna 21 .

[0114] At least a portion of the reverse excitation component 30 is disposed on the frame 19, and may be located in a position in the frame 19 that is spaced a certain distance from at least a portion of the antenna component 20. For example, the position of the reverse excitation source 31 on the frame 19 of the screen portion 1 may be symmetrical with the position of the antenna 21 on the frame 19 of the screen portion 1, relative to the center point of the screen portion 1, and so on.

[0115] In some embodiments, when the screen body 10 is in the folded state, the screen body 10 includes two screen body parts, and a cavity is formed between the two screen body parts.

[0116] The frame 19 may include:

[0117] The first frame 191 is located in a screen portion of the screen 10 , and the antenna assembly 20 is disposed in the first frame 191 ;

[0118] The second frame 192 is located in another screen portion of the screen 10 , and at least a portion of the reverse excitation assembly 30 is disposed in the second frame 192 .

[0119] In this embodiment, the antenna assembly 20 and the reverse excitation assembly 30 are respectively arranged on the frame 19 of different screen parts, so that the arrangement position of the reverse excitation assembly 30 is more flexible.

[0120] For example, the antenna of the antenna component 20 may be located at the border of the screen body 1, and the reverse excitation source of the reverse excitation component 30 may be located at the border of the screen body 2, and the antenna and the screen body 1 as well as the reverse excitation source and the screen body 2 may be electrically connected to the corresponding circuit boards in the screen body through feeding structures.

[0121] In the case where the antenna assembly 20 and the reverse excitation assembly 30 are respectively arranged on the frame 19 of different screen parts, the reverse excitation assembly 30 can be arranged at any position of the other screen part. For example, the reverse excitation assembly 30 can be located on the same side of the electronic device as the antenna assembly 20, etc.

[0122] In some embodiments, the antenna assembly 20 and at least a portion of the reverse excitation assembly 30 are positioned symmetrically relative to the center of the cavity 100 .

[0123] In this embodiment, by symmetrically arranging the positions of at least part of the antenna component 20 and the reverse excitation component 30 relative to the center of the cavity 100, the weakening performance of the second cavity surface current generated by the reverse excitation component 30 on the first cavity surface current can be further enhanced.

[0124] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0125] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that: include: The screen body comprises two screen body parts, wherein the two screen body parts can be relatively turned over to fold the screen body, and when the screen body is in the folded state, a cavity is formed between the two screen body parts; An antenna assembly is disposed on the screen body, and when the antenna assembly is in a working state, the antenna assembly excites the cavity to generate a first cavity surface current on the screen body; A reverse excitation component is arranged on the screen body. When the antenna component generates the first cavity surface current, the reverse excitation component excites the cavity to generate a second cavity surface current on the screen body, and the second cavity surface current weakens the first cavity surface current.

2. The electronic device according to claim 1, characterized in that: The signal amplitude of the input signal of the reverse excitation component is the same as the signal amplitude of the carrier signal of the antenna component; and, The phase difference between the signal phase of the input signal of the reverse excitation component and the signal phase of the carrier signal of the antenna component is 180°.

3. The electronic device according to claim 1, characterized in that: The reverse excitation component comprises: A reverse excitation source is arranged on the screen body; a coupler, the coupler being electrically connected to a carrier signal channel of the antenna assembly; a phase shifter, the phase shifter being electrically connected between the reverse excitation source and the coupler; Wherein, when the antenna assembly is in working state, the coupler transmits the carrier signal in the carrier signal channel to the reverse excitation source through the phase shifter.

4. The electronic device according to claim 3, characterized in that: The reverse excitation component also includes: A low noise amplifier is connected in series between the coupler and the reverse excitation source.

5. The electronic device according to claim 3, characterized in that: The reverse excitation component also includes: A switch unit, the switch unit is connected in series between the coupler and the reverse excitation source; Wherein, when the screen body is in a folded state and the antenna assembly is in a working state, the switch unit conducts the signal transmission channel between the coupler and the reverse excitation source; When the screen body is in the unfolded state, the switch unit disconnects the signal transmission channel between the coupler and the reverse excitation source.

6. The electronic device according to claim 1, characterized in that: The screen body comprises: a first circuit board; A first screen layer, the first screen layer and the first circuit board are arranged relatively spaced apart; The reverse excitation component comprises: A first metal shielding layer, which is attached to one side of the first screen layer and located between the first circuit board and the first screen layer; A first conductive member is disposed between the first metal shielding layer and the first circuit board, and is electrically connected to the first metal shielding layer and the first circuit board.

7. The electronic device according to claim 6, characterized in that: The orthographic projection of the first conductive member on the screen is located in a current maximum region or an electric field minimum region on the screen where the current on the surface of the first cavity is located.

8. The electronic device according to claim 1, characterized in that: The screen body comprises: a second circuit board; a second screen layer, the second screen layer and the second circuit board are arranged relatively spaced apart; a second metal shielding layer, the second metal shielding layer being attached to a side of the second screen layer close to the second circuit board; The reverse excitation component comprises: A coupling feeder, the coupling feeder is arranged in a gap between the second circuit board and the second screen layer, and is spaced apart from the second metal shielding layer; A second conductive member is electrically connected to the coupling feed member and the second circuit board.

9. The electronic device according to claim 8, characterized in that: The orthographic projection of the coupling feed element on the screen is located in the area where the current on the surface of the first cavity is the minimum current or the maximum electric field on the screen.

10. The electronic device according to claim 1, characterized in that: The screen body comprises: A frame, wherein at least a portion of the antenna component and the reverse excitation component are spaced apart from each other on the frame.

11. The electronic device according to claim 10, characterized in that: When the screen body is in a folded state, the screen body includes two screen body parts, and the cavity is formed between the two screen body parts; The frame includes: A first frame body is located in a screen body portion of the screen body, and the antenna assembly is arranged in the first frame body; The second frame is located in another screen body part of the screen body, and at least a part of the reverse excitation component is arranged in the second frame.

12. The electronic device according to claim 11, characterized in that: The antenna component and at least part of the reverse excitation component are located symmetrically relative to the center of the cavity.

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