Electronic device

Abstract

The present application discloses an electronic device, comprising: a folding bracket having a first conductive portion; a display module disposed on the folding bracket, the display module having a conductive layer, and when the folding bracket is in a folded state, the display module is in a folded state; a first resonant cavity is formed between the conductive layer and the first conductive portion; a first feeding structure is used to feed the first resonant cavity, and the first feeding structure and the first resonant cavity form a first antenna. The conductive layer in the display module and the folding bracket form a first resonant cavity, and the conductive layer in the display module in the folded state becomes a part of the first antenna. By applying excitation in the first resonant cavity through the first feeding structure, a high-loss resonant cavity formed by being surrounded by the conductive layer is avoided, the radiation efficiency of the antenna when the electronic device is in the folded state is prevented from deteriorating, and the antenna performance of the electronic device when in the folded state is improved.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to an electronic device. Background Art

[0002] Folding electronic devices have a novel and fashionable appearance. In daily use, they can be used in two ways: unfolded and folded, providing two completely different usage experiences, and have recently attracted much attention in the market. Compared with the antenna system of traditional communication electronic devices, the antenna system and design of folding communication electronic devices have many differences and challenges. The antenna system needs to consider both the unfolded and folded states. Especially when the electronic device is in the folded state, the metal layer of the display module in the electronic device forms a U-shaped high-loss resonant cavity, resulting in a serious deterioration of the radiation efficiency of the antenna system at the corresponding resonant frequency, making the antenna system and the electronic device unable to work properly in the corresponding frequency band. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an electronic device to solve the problem that the high-loss resonant cavity formed by the metal layer of the display module easily causes a decrease in antenna performance when the electronic device is in the folded state.

[0004] The embodiments of this application provide an electronic device, including:

[0005] A folding bracket, which has a first conductive part;

[0006] A display module, which is arranged on the folding bracket. The display module has a conductive layer. When the folding bracket is in the folded state, the display module is in the folded state;

[0007] A first resonant cavity is formed between the conductive layer and the first conductive part;

[0008] A first feeding structure, which is used to feed the first resonant cavity. The first feeding structure and the first resonant cavity form a first antenna.

[0009] Wherein, the conductivity of the first conductive part is greater than that of the conductive layer.

[0010] Wherein, the conductivity of the first conductive part is greater than that of the second conductive layer.

[0011] Wherein, the conductive layer includes a first conductive layer and a second conductive layer arranged in a stacked manner. The first conductive layer is close to the folding bracket, and the conductivity of the first conductive layer is greater than that of the second conductive layer.

[0012] Wherein, the number of the first resonant cavities and the first feeding structures are both multiple, and at least one first feeding structure is correspondingly arranged for each first resonant cavity.

[0013] Wherein, the first resonant cavity has multiple excitation parts, at least one first feeding structure corresponds to each excitation part, and the feeding signal frequencies of the first feeding structures corresponding to each excitation part are different.

[0014] Wherein, the first resonant cavity has multiple excitation parts, at least one first feeding structure corresponds to each excitation part, and the feeding signal frequencies of the first feeding structures corresponding to each excitation part are the same.

[0015] Wherein, the electronic device further comprises:

[0016] A second feeding structure, the folding bracket has a second conductive part, the second feeding structure feeds the second conductive part, the second conductive part serves as a radiator, and the second feeding structure and the second conductive part form a second antenna.

[0017] Wherein, the feeding signal frequencies of the first feeding structure and the second feeding structure are different.

[0018] Wherein, the electronic device further comprises:

[0019] A control module, the control module is used to control the first feeding structure to feed the first resonant cavity; and / or

[0020] To control the second feeding structure to feed the second conductive part.

[0021] Wherein, the second conductive part is arranged along the edge of the folding bracket.

[0022] Wherein, the folding bracket has a first area and a second area, both the first area and the second area have the first conductive part, the display module has a third area and a fourth area, and both the third area and the fourth area have the conductive layer;

[0023] When the folding bracket is in a folded state, the first area and the second area are in a stacked state, and the third area and the fourth area are in a stacked state.

[0024] Wherein, one side edge of the conductive layer is electrically connected to one side edge of the first conductive part, and the conductive layer and the first conductive part are connected in a U shape.

[0025] In the electronic device according to the embodiment of the present application, the folding bracket has a first conductive part, and the display module has a conductive layer. When the folding bracket is in the folded state, the display module is also in the folded state. A first resonant cavity is formed between the conductive layer and the first conductive part. The first feeding structure can feed power to the first resonant cavity, and a first antenna is formed by the first feeding structure and the first resonant cavity. The conductive layer in the display module and the folding bracket form the first resonant cavity, making the conductive layer in the display module in the folded state become a part of the first antenna, forming a first resonant cavity with low loss. By applying excitation to the first resonant cavity through the first feeding structure, it is possible to avoid exciting a high-loss resonant cavity formed by being surrounded by the conductive layer, prevent the radiation efficiency of the antenna from deteriorating when the electronic device is in the folded state, improve the antenna performance of the electronic device in the folded state, and enhance the user experience when the device is in the folded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1a A schematic structural diagram of an electronic device according to an embodiment of the present application;

[0027] Figure 1b is Figure 1a a cross-sectional view in

[0028] Figure 1c A schematic structural diagram of an electronic device according to an embodiment of the present application;

[0029] Figure 2a A schematic structural diagram of an electronic device according to an embodiment of the present application;

[0030] Figure 2b A relative schematic diagram of the first resonant cavity and the high-loss resonant cavity;

[0031] Figure 3a A schematic structural diagram of an electronic device according to another embodiment of the present application;

[0032] Figure 3b is Figure 3a a cross-sectional view in

[0033] Figure 4a A schematic structural diagram of an electronic device according to still another embodiment of the present application;

[0034] Figure 4b is Figure 4a a cross-sectional view in

[0035] Figure 5a A schematic structural diagram of an electronic device according to still another embodiment of the present application;

[0036] Figure 5b is Figure 5a a cross-sectional view in

[0037] Figure 6 It is a schematic diagram of a curve of antenna radiation efficiency.

[0038] Reference numerals

[0039] Folding bracket 10; First conductive part 11; Second conductive part 12;

[0040] First area 101; Second area 102; Third area 103; Fourth area 104;

[0041] Display module 20; Conductive layer 21; First conductive layer 211; Second conductive layer 212;

[0042] First feeding structure 30;

[0043] First resonant cavity 40; Excitation part 41.

[0044] High-loss resonant cavity 50. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0046] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0047] Next, in conjunction with the attached Figures 1a to 6 As shown, the electronic device provided in the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0048] Such as Figures 1a to 5bAs shown in the figure, the electronic device according to the embodiment of the present application includes: a folding bracket 10, a display module 20, and a first feeding structure 30. The folding bracket 10 has a first conductive part 11, and the first conductive part 11 can be a metal structure on the folding bracket 10, such as a metal layer or a metal plate. The folding bracket 10 can be a metal bracket, such as a stainless steel bracket or an aluminum alloy bracket. The display module 20 can be disposed on the folding bracket 10, and the display module 20 can be connected to the folding bracket 10. During the folding process of the folding bracket 10, the folding bracket 10 drives the display module 20 to fold; during the unfolding process of the folding bracket 10, the folding bracket 10 drives the display module 20 to unfold. The display module 20 can have a conductive layer 21, and the conductive layer 21 can include an indium tin oxide (ITO) layer or a support layer, and the support layer is a conductive material part. The conductive layer 21 can include a stacked indium tin oxide layer and a support layer, and the support layer can be disposed close to the folding bracket 10. When the folding bracket 10 is in the folded state, the display module 20 is in the folded state.

[0049] There is a gap between the conductive layer 21 and the first conductive part 11, and the conductive layer 21 and the first conductive part 11 can form a first resonant cavity 40. The first feeding structure 30 can feed the first resonant cavity 40. Through the first feeding structure 30, feeding can be performed inside the first resonant cavity 40, and feeding can be performed through the excitation port inside the first resonant cavity 40. The first feeding structure 30 and the first resonant cavity 40 can form a first antenna. Through the first feeding structure 30, feeding can be performed at different positions in the first resonant cavity 40. Through the first feeding structure 30, feeding can be performed at one or more positions in the first resonant cavity 40. Through the first feeding structure 30, feeding signals with the same or different frequencies can be fed into different positions in the first resonant cavity 40, which can be specifically selected according to actual needs so that the first antenna has different performances.

[0050] In the present application, the conductive layer 21 in the display module 20 and the folding bracket 10 can form a first resonant cavity 40. The conductive layer 21 in the display module 20 in the folded state can be used as a part of the first antenna to form a first resonant cavity 40 with low loss. Through the first feeding structure 30, excitation is given inside the first resonant cavity 40. The conductive layer 21 in the display module 20 in the folded state is U-shaped, avoiding the excitation of the U-shaped high-loss resonant cavity 50 formed by being surrounded by the conductive layer 21, avoiding the deterioration of the radiation efficiency of the antenna when the electronic device is in the folded state, improving the antenna performance of the electronic device when it is in the folded state, and improving the user experience when the device is in the folded state.

[0051] In some embodiments, the conductivity of the first conductive part 11 is greater than that of the conductive layer 21. The high conductivity of the first conductive part 11 is beneficial to forming a first resonant cavity 40 with low loss and improving the radiation efficiency of the first antenna.

[0052] In some other embodiments, such as Figures 1b to 2a , Figure 3b , Figure 4b and Figure 5b shown, the conductive layer 21 may include a first conductive layer 211 and a second conductive layer 212 which are stacked. The first conductive layer 211 is disposed close to the folding bracket 10, and the conductivity of the first conductive layer 211 is greater than that of the second conductive layer 212. The conductivity of the first conductive portion 11 is greater than that of the second conductive layer 212, and the conductivity of the first conductive portion 11 may be similar to that of the first conductive layer 211. The second conductive layer 212 may be an indium tin oxide layer, and the first conductive layer 211 may be made of stainless steel or aluminum alloy material. The first conductive layer 211 has a high conductivity, that is, low conductor loss, and the first conductive layer 211 has a certain strength and hardness and can have a supporting effect. The first conductive layer 211 may be stainless steel, and the first conductive portion 11 may be made of aluminum alloy material. The high conductivity of the first conductive layer 211 and the first conductive portion 11 is beneficial to forming a first resonant cavity 40 with low loss and improving the radiation efficiency of the first antenna. In the folded state, the conductive layer 21 in the display module 20 is in a U shape, avoiding exciting a U-shaped high-loss resonant cavity 50 formed by being surrounded by the second conductive layer 212. When the first resonant cavity 40 is excited, its conductor loss is low, and the loss of the first resonant cavity 40 is significantly lower than that of the high-loss resonant cavity 50. The first resonant cavity 40 can be called a low-loss resonant cavity. When the first resonant cavity 40 is in resonance, it mainly operates in a radiation state, and the beneficial effect of improving the antenna radiation efficiency can be achieved. Its simplified resonant cavity model can be as Figure 2b shown.

[0053] In the embodiments of the present application, the number of the first resonant cavities 40 and the first feeding structures 30 may both be multiple. Each first resonant cavity 40 is at least correspondingly provided with one first feeding structure 30. For example, each first resonant cavity 40 is correspondingly provided with one first feeding structure 30, and the corresponding first resonant cavity 40 can be fed through the first feeding structure 30. The frequencies of the feeding signals fed into the first resonant cavity 40 by each first feeding structure 30 may be the same or different. For example, the frequencies of the feeding signals fed into multiple first resonant cavities 40 are different, and the specific frequency of the feeding signal can be selected according to actual needs.

[0054] Optionally, such as Figure 3b , Figure 4bAs shown, the first resonator 40 may have a plurality of excitation portions 41. By applying excitations respectively, a plurality of antennas operating independently can be formed, improving the performance of the antennas. Each excitation portion 41 corresponds to at least one first feeding structure 30. The feeding signal frequencies of the first feeding structures 30 corresponding to each excitation portion 41 may be different to form antennas of different frequencies. The first resonator 40 has a plurality of excitation portions 41. Each excitation portion 41 corresponds to at least one first feeding structure 30. The feeding signal frequencies of the first feeding structures 30 corresponding to each excitation portion 41 may be the same. The specific number of the excitation portions 41 and the feeding signal frequencies can be selected according to actual situations. The plurality of excitation portions may all be arranged in the edge region or the middle region of the first resonator 40, or a plurality of excitation portions may be respectively arranged in the edge region and the middle region of the first resonator 40 to form a plurality of antennas operating independently, improving the performance of the antennas. For example, the first resonator 40 may have two excitation portions. The two excitation portions may be arranged at intervals. One excitation portion may be arranged in the middle region of the first resonator 40, and the other excitation portion may be arranged in the edge region of the first resonator 40. The first feeding structure 30 may feed different-frequency feeding signals to different excitation portions. By adding a plurality of excitation ports in the first resonator 40, the space of the first resonator 40 can be reused to obtain a multi-antenna design scheme, saving the space occupied by the antennas. Under the condition of the same space occupation, more antenna units can be realized, facilitating the use of multi-antenna technology to improve the performance of the overall antenna system. According to the antenna operating mode, the overall layout of the circuit board, the performance requirements of the whole electronic product, etc., feeding ports can be continuously added at other positions to form a richer multi-antenna system.

[0055] To effectively excite the first resonator 40, the excitation portion 41 of the antenna can be arranged inside the first resonator 40, that is, placed between the conductive layer 21 and the first conductive portion 11. The excitation portion 41 may include an excitation port. The excitation portion 41 is far from the opening gap of the high-loss resonator 50, and there is a first conductive layer 211 between the excitation port and the high-loss resonator 50, which can avoid exciting the high-loss resonator 50 surrounded by the second conductive layer 212 and only excite the first resonator 40.

[0056] As Figure 3a and Figure 3bAs shown, two excitation parts 41 can be arranged in the first resonant cavity 40. The excitation part 41 can include an excitation port and can be excited separately to obtain two independently operating antennas. For the selection of the excitation position, it can be placed at a position where the input impedance is equal to or close to the system characteristic impedance according to the size of the formed first resonant cavity 40 and the antenna resonant mode. In addition, in order to make the isolation between the two formed independent antennas as high as possible, the two excitation parts can be placed along the long side and the short side of the first resonant cavity 40 respectively, which is equivalent to exciting two polarizations of the antenna and is beneficial to achieving better isolation. The first resonant cavity 40 can be fed through the first feeding structure 30 and the excitation port, and corresponding feeding structures such as metal shrapnel, spring pins (Pogo PIN), and plastic metallized structural parts can be arranged on the mobile phone circuit board or various brackets.

[0057] In some embodiments, as Figure 5a and Figure 5b shown, the electronic device may further include: a second feeding structure. The folding bracket 10 may have a second conductive part 12. The second feeding structure can feed the second conductive part 12, and the second conductive part 12 can be used as a radiator. The second feeding structure and the second conductive part 12 can form a second antenna. The second conductive part 12 can be a metal structure on the folding bracket 10, such as a metal layer, a metal plate, a metal bracket, or a metal frame. By feeding the second conductive part 12 through the second feeding structure, the second conductive part 12 can radiate signals, which can improve the performance of the antenna. The first antenna and the second antenna can be coupled, and the radiation frequency band and radiation efficiency of the antenna can be improved through the first antenna and the second antenna, thereby improving the performance of the antenna.

[0058] Optionally, the frequencies of the feeding signals of the first feeding structure 30 and the second feeding structure are different, so that the first antenna and the second antenna can have a wider radiation frequency band.

[0059] Optionally, the electronic device may further include: a control module. The control module can be used to control the first feeding structure 30 to feed the first resonant cavity 40; the control module can be used to control the second feeding structure to feed the second conductive part 12. During use, the feeding of the feeding structure can be controlled by the control module according to actual needs to meet the requirements for the performance of the antenna.

[0060] In some embodiments, the second conductive part 12 may be disposed along the edge of the folding bracket 10. The second conductive part 12 may extend along the edge of the folding bracket 10. The specific shape and size of the second conductive part 12 may be selected according to the actual situation. The number of the second conductive parts 12 may be one or more. For example, the number of the second conductive parts 12 may be multiple. The adjacent second conductive parts 12 may be insulated or spaced apart by a certain distance. The isolation between the antennas formed by the multiple second conductive parts 12 is achieved through a grounding metal part. The second conductive parts 12 may be used as independent radiators for radiation respectively.

[0061] For the multi-antenna implementation scheme, in addition to exciting the low-loss resonant cavity antenna (the first antenna), the low-loss resonant cavity antenna and the second antenna may also be combined with each other to form a complementary antenna design scheme. The concept of an antenna cluster may be adopted, that is, based on a specified optimization goal, the excitation amplitude and phase of the second antenna and the low-loss resonant cavity antenna are optimized and adjusted, which can improve the performance of the overall antenna system. Taking Figure 5a and Figure 5b the schematic diagram of the implementation scheme shown as an example, the second conductive part 12 may be the lower metal frame, and the low-loss resonant cavity antenna and the second antenna are combined into an antenna cluster. As Figure 6 shown, the curve a represents the efficiency of the second antenna, the curve b represents the efficiency of the first antenna, and the curve c represents the efficiency when the first antenna and the second antenna form an antenna cluster. When the second antenna works, since a high-loss resonant cavity 50 will be excited, its radiation efficiency curve (curve a) will deteriorate significantly at the corresponding resonant frequency point f0. For the low-loss resonant cavity, it is surrounded by the conductive layer 21 and the first conductive part 11, with low conductor loss, and its excitation port is located inside the low-loss resonant cavity, as Figure 1bThe shown resonant cavity can achieve high radiation efficiency when operating at the corresponding resonant frequency points. Thus, it can be seen that the two antennas will form a complementary characteristic on the radiation efficiency curve. The two antennas can be combined into an antenna cluster. By reasonably giving the input amplitude and phase excitation distributions to the two antennas, a high radiation efficiency can be obtained within a wide frequency range. Simply put, when the antenna cluster operates at frequencies f1 and f2, only the second antenna can be excited while the low-loss resonant cavity is not excited, that is, the excitation of the low-loss resonant cavity is set to 0. At this time, the radiation efficiency shown by the antenna cluster is the radiation efficiency of the second antenna. When the antenna cluster operates at f0, correspondingly, only the low-loss resonant cavity is excited while the second antenna is not excited, and the radiation efficiency of the antenna cluster is the radiation efficiency of the low-loss resonant cavity antenna. Thus, it can be seen that the antenna cluster has a high radiation efficiency within the frequency range of f1 - f2. Considering the coupling between the second antenna and the low-loss resonant cavity antenna, the input amplitude and phase excitation distributions given during the actual operation of the antenna cluster need to be obtained through an optimization algorithm. The optimization algorithm will use the above coupling characteristics as the input and maximize the radiation efficiency of the antenna cluster as the optimization goal to optimize and calculate the input excitation distribution of the antenna cluster. Specifically, assuming that the incident wave excitations of these 2 antennas are a = [a1, a2] T , and the reflected waves are b = [b1, b2] T , then there is Equation (1):

[0062]

[0063] The S matrix in Equation (1) is the scattering parameter matrix of these 2 antennas, where S12 and S21 are the couplings between these 2 antennas. In addition, for a multi-antenna system, from the perspective of power conservation, there can be Equation (2):

[0064] P inc = P ref + P loss + P rad (2)

[0065] where P inc , P ref , P loss , P rad are the input power, reflected power, loss power, and radiation power of the antenna system respectively, and there are Equation (3) and Equation (4):

[0066] P inc = a H · a (3)

[0067] P ref = b H · b (4)

[0068] For the formed antenna cluster, the key parameter is the radiation efficiency, and its expression is Equation (5):

[0069]

[0070] When the designs of these two antennas are determined, their S-parameter matrices are also determined. When the incident wave excitation a changes, the reflected wave b and the radiation power P rad will also change. Correspondingly, the radiation efficiency η of the antenna cluster will also change. By selecting an appropriate incident wave excitation a, the radiation efficiency η can be maximized, and within the operating frequency range required by the system, the required incident wave excitation a = [a1, a2] can be optimized for each frequency point T , thereby achieving a high radiation efficiency for the antenna cluster described in this embodiment within the frequency range of f1 - f2. Using the antenna cluster technology, a low-loss resonator antenna and a second antenna are combined to form an antenna cluster, which can obtain a high radiation efficiency within a wider frequency range and make full use of the performance characteristics of various antenna types.

[0071] Optionally, as Figure 4a and Figure 4bAs shown, the folding bracket 10 may have a first region 101 and a second region 102, and both the first region 101 and the second region 102 may have a first conductive part 11. The display module 20 may have a third region 103 and a fourth region 104, and both the third region 103 and the fourth region 104 may have a conductive layer 21. When the folding bracket 10 is in the folded state, the first region 101 and the second region 102 are in a stacked state, and the third region 103 and the fourth region 104 are in a stacked state. The first conductive part 11 of the first region 101 and the first conductive part 11 of the second region 102 may be insulated or electrically connected at intervals, which can be specifically selected according to the actual situation. The conductive layer 21 of the third region 103 and the conductive layer 21 of the fourth region 104 may be formed as a single body. When the electronic device is in the folded state, the conductive layer 21 of the third region 103 and the conductive layer 21 of the fourth region 104 may form a U-shaped structure, and the conductive layer 21 of the third region 103 and the conductive layer 21 of the fourth region 104 may be electrically connected. More antennas can be obtained inside the electronic device, further improving the space utilization rate and the performance of the overall antenna system. A first resonant cavity 40 can be respectively formed in the stacked regions of the electronic device in the folded state, and multiple first antennas can be constituted. Excitation ports can be respectively placed inside the upper and lower first resonant cavities 40 to implement a multi-antenna system. Among them, the selection and implementation of the antenna excitation position can refer to the foregoing embodiments and will not be elaborated here. The number of antenna units to be implemented in different first resonant cavities 40 can be the same or different. At the same time, the number of antennas implemented in each resonant cavity can be a single antenna or multiple antennas, and the selection of the feeding position is not limited to the arrangement symmetric about the xoy plane, and can be flexibly configured according to the overall machine system structure stacking, circuit board layout, antenna working mode, etc.

[0072] In the embodiment of the present application, one side edge of the conductive layer 21 and one side edge of the first conductive part 11 may be electrically connected, and the conductive layer 21 and the first conductive part 11 are connected in a U shape, which is beneficial to the signal radiating from the opening direction of the U-shaped structure. When the electronic device is in the folded state, one side edge of the conductive layer 21 and one side edge of the first conductive part 11 may be in mutual contact, so that one side edge of the conductive layer 21 and one side edge of the first conductive part 11 can be electrically connected, which is beneficial to the signal radiating from the opening direction of the U-shaped structure.

[0073] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. An electronic device, characterized in that, Comprising: A folding bracket, the folding bracket having a first conductive part; A display module, the display module being disposed on the folding bracket, the display module having a conductive layer, and when the folding bracket is in a folded state, the display module is in a folded state; A first resonant cavity is formed between the conductive layer and the first conductive part; A first feeding structure, the first feeding structure being used to feed the first resonant cavity, and the first feeding structure and the first resonant cavity form a first antenna; One side edge of the conductive layer is electrically connected to one side edge of the first conductive part, and the conductive layer and the first conductive part are connected in a U shape.

2. The electronic device according to claim 1, characterized in that, The conductivity of the first conductive part is greater than that of the conductive layer.

3. The electronic device according to claim 1, characterized in that, The conductive layer includes a first conductive layer and a second conductive layer stacked, the first conductive layer being disposed close to the folding bracket, and the conductivity of the first conductive layer is greater than that of the second conductive layer.

4. The electronic device according to claim 3, characterized in that, The conductivity of the first conductive part is greater than that of the second conductive layer.

5. The electronic device according to claim 1, characterized in that, The number of the first resonant cavities and the first feeding structures are both multiple, and each first resonant cavity is correspondingly provided with at least one first feeding structure.

6. The electronic device according to claim 1, characterized in that, The first resonant cavity has multiple excitation parts, each excitation part corresponds to at least one first feeding structure, and the feeding signal frequencies of the first feeding structures corresponding to each excitation part are different.

7. The electronic device according to claim 1, characterized in that, The first resonant cavity has multiple excitation parts, each excitation part corresponds to at least one first feeding structure, and the feeding signal frequencies of the first feeding structures corresponding to each excitation part are the same.

8. The electronic device according to claim 1, characterized in that, Further comprising: A second feeding structure, the folding bracket having a second conductive part, the second feeding structure feeding the second conductive part, and the second conductive part serving as a radiator, and the second feeding structure and the second conductive part form a second antenna.

9. The electronic device according to claim 8, characterized in that, The feeding signal frequencies of the first feeding structure and the second feeding structure are different.

10. The electronic device according to claim 8, characterized in that, Further comprising: A control module, the control module being used to control the first feeding structure to feed the first resonant cavity; And / or Used to control the second feeding structure to feed the second conductive part.

11. The electronic device according to claim 8, characterized in that, The second conductive part is disposed along the edge of the folding bracket.

12. The electronic device according to claim 1, characterized in that, The folding bracket has a first area and a second area, both the first area and the second area have the first conductive part, the display module has a third area and a fourth area, and both the third area and the fourth area have the conductive layer; When the folding bracket is in a folded state, the first area and the second area are in a stacked state, and the third area and the fourth area are in a stacked state.

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