Antenna module, screen module and electronic equipment

Abstract

The invention discloses an antenna module, a screen module and electronic equipment, and belongs to the technical field of antennas. The antenna module comprises a radiator and a periodic structure. The radiator and the periodic structure are arranged adjacently; the periodic structure comprises at least two metal unit bodies, at least two plated-through holes, a dielectric layer and a floor body; the at least two metal unit bodies are arranged on one side of the dielectric layer at intervals, the floor body is located on the other side of the dielectric layer, and each metal unit body in the at least two metal unit bodies is electrically connected with the floor body through a plated-through hole. According to the antenna module and the periodic structure disclosed by the invention, the periodic structure can serve as the virtual ground plane of the radiator, the radiation energy of the radiator is reflected outwards, the formation of surface waves is effectively restrained, the loss of the radiation energy is reduced, and the radiation efficiency of the radiator is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an antenna module, a screen module and an electronic device. Background Art

[0002] With the advent of 5G and the microwave millimeter wave era, more and more frequency bands are required for antenna design, and the demand for full-screen displays will cause the antenna clearance to approach "0". How to integrate more antennas and more frequency bands into the entire device, and how to improve antenna performance in harsh environmental conditions have become major challenges in antenna design.

[0003] In the related art, the metal layer in the screen is often reused as the floor of the antenna structure to reflect the radiation energy. However, in this solution, part of the radiation energy will form surface waves in the metal layer, resulting in the loss of effective radiation energy, making it impossible to improve the radiation efficiency of the antenna structure. Summary of the invention

[0004] The present disclosure provides an antenna module, a screen module and an electronic device, which can solve the problem that the surface waves formed by the metal layer of the screen lead to the loss of effective radiation energy and the radiation efficiency of the antenna structure cannot be improved.

[0005] The technical solution is as follows:

[0006] In one aspect, an antenna module is provided, the antenna module comprising: a radiator and a periodic structure;

[0007] The radiator is arranged adjacent to the periodic structure;

[0008] The periodic structure includes at least two metal unit bodies, at least two metallized holes, a dielectric layer and a floor body;

[0009] The at least two metal unit bodies are arranged at one side of the dielectric layer with a spacing therebetween, the floor body is located at the other side of the dielectric layer, and each of the at least two metal unit bodies is electrically connected to the floor body through the metallized holes.

[0010] In some embodiments, the equivalent inductance value of the periodic structure and the equivalent capacitance value of the periodic structure are determined by the natural frequency f0 of the periodic structure.

[0011] In some embodiments, the natural frequency f0 of the periodic structure is equal to the operating frequency f of the radiator. 工作频率 .

[0012] In some embodiments, the natural frequency f0 of the periodic structure is determined by formula (a):

[0013]

[0014] In formula (a), L is the equivalent inductance value of the periodic structure, and C is the equivalent capacitance value of the periodic structure;

[0015] Wherein, the equivalent inductance value L is determined by formula (b):

[0016] L=μ×h (b)

[0017] In formula (b), μ is the magnetic permeability of the dielectric layer, and h is the thickness of the dielectric layer;

[0018] Wherein, the equivalent inductance value L is determined by formula (c):

[0019]

[0020] In formula (c), ε0 is the relative dielectric constant of air, ε r is the relative dielectric constant of the dielectric layer, a is the size of the metal unit body, and g is the distance between two adjacent metal unit bodies.

[0021] In some embodiments, the periodic structure further includes a metal foil layer, the metal foil layer is located on one side of the dielectric layer, and at least a portion of the metal foil layer forms the at least two metal unit bodies.

[0022] On the other hand, an electronic device is provided, comprising the antenna module described in the present disclosure.

[0023] In some embodiments, the electronic device further includes a middle frame and a screen module;

[0024] The screen module is located on one side of the middle frame, the radiator is located on the middle frame, and the periodic structure is located on a first non-display surface of the screen module.

[0025] In some embodiments, the middle frame member includes at least one frame portion, and the radiator is located on the at least one frame portion.

[0026] In some embodiments, the screen module includes a metal layer, and the metal layer is located on the first non-display surface of the screen module;

[0027] At least a portion of the metal layer forms the floor body, the dielectric layer is located on a side of the metal layer away from the screen module, and the at least two metal unit bodies are located on a side of the dielectric layer away from the metal layer.

[0028] In some embodiments, the antenna module includes at least two of the radiators and at least two of the periodic structures;

[0029] At least two of the radiators are respectively arranged on the middle frame member, at least two of the periodic structures are respectively arranged on the first non-display surface of the screen module, and each of the radiators is arranged adjacent to at least one of the periodic structures.

[0030] On the other hand, a screen module is provided, comprising a display body and at least one periodic structure; the at least one periodic structure is located on a second non-display surface of the display body.

[0031] In some embodiments, the display body includes a metal layer, and the metal layer is located on the second non-display surface of the display body;

[0032] The at least one periodic structure includes a dielectric layer, at least two metal unit bodies and at least two metallized holes; the dielectric layer is located on the side of the metal layer away from the display body, the at least two metal unit bodies are arranged at intervals on the side of the dielectric layer away from the metal layer, and each of the at least two metal unit bodies is electrically connected to the metal layer through the metallized hole.

[0033] On the other hand, an electronic device is provided, comprising the screen module described in the present disclosure.

[0034] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0035] The antenna module disclosed in the present invention arranges a periodic structure near a radiator. In the periodic structure, at least two metal unit bodies and a floor body are separated by a dielectric layer and electrically connected through metallized holes. A local resonant circuit is formed between adjacent metal unit bodies. This resonant circuit can be equivalent to a parallel LC resonant circuit. The resonant circuit can generate LC resonance with the radiator, so that the periodic structure can serve as a virtual ground plane of the radiator, reflect the radiation energy of the radiator outward, and effectively curb the formation of surface waves, reduce the loss of radiation energy, and improve the radiation efficiency of the radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 is a schematic diagram of the structure of an antenna module provided in an embodiment of the present disclosure;

[0038] Figure 2 is a structural cross-sectional view of a periodic structure provided by an embodiment of the present disclosure;

[0039] Figure 3 It is a structural schematic diagram of a screen module and an electronic device provided by an embodiment of the present disclosure;

[0040] Figure 4 is a structural schematic diagram of an electronic device provided by another embodiment of the present disclosure;

[0041] Figure 5 It is a structural schematic diagram of a screen module provided in another embodiment of the present disclosure.

[0042] The reference numerals in the figures represent respectively:

[0043] 1. Radiator;

[0044] 2. Periodic structure; 21. Metal unit body; 22. Metallized hole; 23. Dielectric layer; 24. Floor body;

[0045] 3. Middle frame;

[0046] 4. Screen module; 401. First non-display surface; 41. Display body; 411. Second non-display surface; 42. Metal layer. DETAILED DESCRIPTION

[0047] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0048] In the description of the present disclosure, 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 directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0049] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art.

[0050] In the related art, in order to improve the radiation efficiency of the antenna structure in a mobile electronic device, the panel layer of the screen is used as a floor. The panel layer is usually covered with metal lines and can be used as a virtual ground plane of the antenna structure. The virtual ground plane can be used to reflect the radiation energy of the antenna structure toward the cover plate to pursue higher radiation efficiency.

[0051] However, due to the large resistance effect of the pannel layer itself, this will cause a large consumption of radiation energy. In addition, the radiation energy is likely to form surface wave radiation in the pannel layer. This part of the radiation energy cannot expand outward, which will cause the loss of radiation energy of the antenna structure, making it difficult to improve the radiation efficiency.

[0052] Therefore, the present disclosure provides an antenna module, in which a periodic structure can replace the pannel layer of the screen as a virtual ground plane of the radiator, reflect the radiation energy of the radiator outward, and effectively curb the formation of surface waves, reduce the loss of radiation energy, and improve the radiation efficiency of the radiator.

[0053] The technical solution provided by the present disclosure is applicable to electronic devices that adopt one or more of the following communication technologies: Bluetooth (Blue Tooth, BT) communication technology, Global Positioning System (Global Positioning System, GPS) communication technology, Wireless Fidelity (Wireless Fidelity, WiFi) communication technology, Global System For mobile communications (Global System For mobile Communications, GSM) communication technology, Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) communication technology, Long Term Evolution (Long Term Evolution, LTE) communication technology, 5G communication technology and other future communication technologies.

[0054] The electronic device in the embodiments of the present disclosure may be a mobile phone, a tablet computer, a laptop computer, a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. The electronic device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future Public Land Mobile Network (PLMN), etc., and the embodiments of the present disclosure are not limited to this.

[0055] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0056] Figure 1 It is a schematic diagram of the structure of the antenna module provided in an embodiment of the present disclosure.

[0057] On the one hand, combined with Figure 1 As shown, this embodiment provides an antenna module, and the antenna module includes: a radiator 1 and a periodic structure 2.

[0058] The radiator 1 is arranged adjacent to the periodic structure 2 ; the periodic structure 2 includes at least two metal unit bodies 21 , at least two metallized holes 22 , a dielectric layer 23 and a floor body 24 .

[0059] At least two metal unit bodies 21 are arranged at a distance from each other on one side of the dielectric layer 23 , and the floor body 24 is located on the other side of the dielectric layer 23 . Each of the at least two metal unit bodies 21 is electrically connected to the floor body 24 through the metallized hole 22 .

[0060] The antenna module of this embodiment arranges a periodic structure 2 near the radiator 1. At least two metal unit bodies 21 and a floor body 24 in the periodic structure 2 are separated by a dielectric layer 23 and electrically connected through a metallized hole 22. A local resonant circuit is formed between adjacent metal unit bodies 21. This resonant circuit can be equivalent to a parallel LC resonant circuit. The resonant circuit can generate LC resonance with the radiator 1, so that the periodic structure 2 can serve as a virtual ground plane of the radiator 1, reflect the radiation energy of the radiator 1 outward, and effectively curb the formation of surface waves, reduce the loss of radiation energy, and improve the radiation efficiency of the radiator 1.

[0061] In addition, the periodic structure 2 can also effectively suppress the radiation back lobe of the radiator 1, and in a multi-antenna combination solution, it can improve the isolation between different antenna structures and reduce the performance impact of the antenna structure.

[0062] In some possible implementations, the radiator 1 and the periodic structure 2 are arranged adjacent to each other, which means that the space where the radiator 1 and the periodic structure 2 are located is close to each other, including but not limited to the radiator 1 being located above the periodic structure 2, the radiator 1 being located below the periodic structure 2, the radiator 1 being located in front of the periodic structure 2, the radiator 1 being located behind the periodic structure 2, and the like.

[0063] In some possible implementations, the radiator 1 can be used for radiating radio frequency signals of any frequency band, such as low frequency, medium frequency, high frequency, etc., of electronic equipment.

[0064] In some possible implementations, the shape of the metal unit body 21 includes but is not limited to a rectangle, a circle, a diamond, a triangle, etc., and can be flexibly designed or adjusted according to the processing technology or usage requirements.

[0065] In some other possible implementations, at least two metal unit bodies 21 may be arranged in an array, with an interval between two adjacent metal unit bodies 21. Exemplarily, at least two metal unit bodies 21 are periodically arranged in two directions parallel to the extension direction of the radiator 1 and perpendicular to the extension direction of the radiator 1.

[0066] Optionally, the number of metal unit bodies 21 is, for example, two, three, four, five, etc. The actual number can be flexibly designed or selected according to the stacking environment, the size of the radiator 1, etc., and it is only necessary to ensure that the periodic structure 2 generates an induced current in the same direction as the radiator 1 under the coupling action of the radiator 1.

[0067] In some possible implementations, the natural frequency f0 of the periodic structure 2 is equal to the operating frequency f of the radiator 1. 工作频率 When the natural frequency f0 of the periodic structure 2 is equal to the operating frequency f 工作频率 At the same time, the periodic structure 2 and the radiator 1 can reach a state of LC resonance. Under the coupling effect, the periodic structure 2 generates an induced current in the same direction as the radiator 1, thereby not affecting the radiation performance of the radiator 1 and suppressing the formation of surface wave radiation.

[0068] In some embodiments, the equivalent inductance value and the equivalent capacitance value of the periodic structure 2 are determined by the natural frequency f0 of the periodic structure 2. 工作频率After determining the natural frequency f0 of the periodic structure 2, the structural parameters of the periodic structure 2 can be reversed by determining the equivalent inductance value and the equivalent capacitance value through the natural frequency f0, so as to realize the working frequency f0 for different radiators 1. 工作频率 Carry out scientific and reasonable design to meet the use requirements of different radiators 1.

[0069] Combination Figure 2 As shown, in some embodiments, the natural frequency f0 of the periodic structure 2 is determined by formula (a):

[0070]

[0071] In formula (a), L is the equivalent inductance value of the periodic structure 2, and C is the equivalent capacitance value of the periodic structure 2.

[0072] The equivalent inductance L is determined by formula (b):

[0073] L=μ×h (b)

[0074] In formula (b), μ is the magnetic permeability of the dielectric layer 23 , and h is the thickness of the dielectric layer 23 .

[0075] Among them, the equivalent inductance value L is determined by formula (c):

[0076]

[0077] In formula (c), ε0 is the relative dielectric constant of air, ε r is the relative dielectric constant of the dielectric layer 23 , a is the size of the metal unit body 21 , and g is the distance between two adjacent metal unit bodies 21 .

[0078] By using the formulas (a), (b) and (c) provided in this embodiment, the operating frequency f of the radiator 1 can be determined. 工作频率 In the case of , first determine the natural frequency f0 of the periodic structure 2, and then use formula (b) and formula (c) to infer the relationship between the natural frequency f0 and the operating frequency f 工作频率 The structure and spacing of the metal unit body 21, the thickness of the dielectric layer 23 and other dimensions are the same. Therefore, the periodic structure 2 of this embodiment can be used for different working frequencies f of the radiator 1. 工作频率 Carry out scientific and reasonable design to meet the use requirements of different radiators 1.

[0079] In some possible implementations, the metal unit body 21 is square, and a plurality of metal unit bodies 21 are arranged in a rectangular array.

[0080] In some embodiments, the periodic structure 2 further includes a metal foil layer, which is located on one side of the dielectric layer 23 , and at least a portion of the metal foil layer forms at least two metal unit bodies 21 .

[0081] In this embodiment, at least two metal unit bodies 21 are formed by using at least part of the metal foil layer, which can reduce the difficulty of manufacturing the metal unit bodies 21 and reduce the manufacturing cost of the antenna module.

[0082] Optionally, at least a portion of the metal foil layer is patterned by cutting, etching, laser engraving or other processes, so that a reserved portion of the metal foil layer forms the above-mentioned metal unit body 21 .

[0083] In some possible implementations, the material of the metal foil layer includes but is not limited to copper foil, aluminum foil, gold foil, etc.

[0084] On the other hand, this embodiment provides an electronic device, and the electronic device includes the antenna module disclosed in the present invention.

[0085] The electronic device of this embodiment adopts the antenna module disclosed in the present invention and has all the beneficial technical effects of all the embodiments in this document.

[0086] In some possible implementations, the electronic device may include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply and other components.

[0087] Among them, the RF circuit can be used for receiving and sending signals during information transmission or calls. In particular, after receiving the downlink information of the base station, it is handed over to one or more processors for processing; in addition, the uplink data is sent to the base station. Usually, the RF circuit includes but is not limited to an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc.

[0088] In addition, the RF circuit can also communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobilecommunication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

[0089] Combination Figure 3 As shown, in some embodiments, the electronic device also includes a middle frame 3 and a screen module 4; the screen module 4 is located on one side of the middle frame 3, the radiator 1 is located on the middle frame 3, and the periodic structure 2 is located on the first non-display surface 401 of the screen module 4.

[0090] Since the first non-display surface 401 of the screen module 4 has a periodic structure 2, the screen module 4 and the radiator 1 can be isolated from each other, thereby avoiding mutual interference between the radiator 1 and the screen module 4. The radiation energy of the radiator 1 will not form surface wave radiation in the screen module 4, which is beneficial to avoiding field pattern degradation of the radiator 1.

[0091] In some possible implementations, the thickness of the periodic structure 2 is 0.7 mm-1.3 mm, thereby ensuring that the periodic structure 2 does not have a significant impact on the structure of the screen module 4 and the stacking of electronic devices.

[0092] Exemplarily, the thickness of the periodic structure 2 is, for example, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, etc. Optionally, the thickness of the periodic structure 2 is 1.0 mm.

[0093] In some possible implementations, the screen module 4 has a display panel, and the display panel includes any one of a plasma display panel (PDP), a vacuum fluorescent display (VFD), a field emission display (FED), an electroluminescent display (LED), an organic light-emitting diode display (OLED), a liquid crystal display (LCD), a micro-electro-mechanical system display (DMD), and an electronic ink (EL) display.

[0094] In some possible implementations, the display panel is an OLED display screen.

[0095] Exemplarily, the display panel includes a substrate, an organic light-emitting diode (OLED) layer, and a thin film encapsulation (TFE) layer which are stacked in sequence.

[0096] In another exemplary embodiment, the display panel includes a substrate, a thin film transistor (TFT) layer, an organic light-emitting diode (OLED) layer, a thin film encapsulation (TFE) layer, a touch layer and a polarizer which are stacked in sequence.

[0097] It should be noted that the layer structure of the display panel is not limited to the two structural forms listed above. Under the condition of meeting the requirements of folding display, the display panel can also adopt other layer structure forms.

[0098] In some embodiments, the middle frame member 3 includes at least one frame portion, at least one frame portion is located at the edge of the middle frame member 3, and the radiator 1 is located on at least one frame portion. At least one frame portion of the middle frame member 3 is usually located at the outermost side of the electronic device, which has a better clearance environment and is conducive to improving the radiation performance of the radiator 1. The middle frame member 3 also includes an intermediate assembly portion, which can be used as an assembly and support structure for internal components of the electronic device. Exemplarily, the middle frame member 3 includes four frame portions, which respectively correspond to the left frame, top frame, right frame and bottom frame that are directly or indirectly connected in sequence. The screen module is located in a rectangular area surrounded by the four frames, and the radiator 1 can be located on any one of the four frames, or any multiple of them.

[0099] Combination Figure 3 As shown, in some embodiments, the screen module 4 includes a metal layer, which is located on the first non-display surface 401 of the screen module 4; at least a portion of the metal layer forms a floor body 24, the dielectric layer 23 is located on the side of the metal layer away from the screen module 4, and at least two metal unit bodies 21 are located on the side of the dielectric layer 23 away from the metal layer.

[0100] In the electronic device of this embodiment, the metal layer of the screen module 4 is used as the floor body 24 in the periodic structure 2, which can reduce the structural complexity of the antenna module, improve the reuse rate of the metal layer of the screen module 4, and reduce the material cost of the electronic device.

[0101] In some possible implementations, the screen module 4 includes a light-emitting layer, a driving array layer, and a flexible substrate layer, wherein the light-emitting layer is used to emit light to achieve a display function.

[0102] The drive array layer, which may also be referred to as the drive device layer, serves as the metal layer of the screen module 4 and realizes the bottom plate function of the periodic structure 2. The drive circuit of the display panel and at least part of the signal lines (e.g., pixel circuit, gate drive circuit, scanning signal line, data signal line, light emission control signal line, reference voltage signal line, etc.) may be arranged in the drive array layer.

[0103] Combination Figure 4 As shown, in some embodiments, the antenna module includes at least two radiators 1 and at least two periodic structures 2.

[0104] At least two radiators 1 are respectively arranged on the middle frame 3 , at least two periodic structures 2 are respectively arranged on the first non-display surface 401 of the screen module 4 , and each radiator 1 is arranged adjacent to at least one periodic structure 2 .

[0105] In the electronic device of this embodiment, the antenna module includes at least two radiators 1, and the at least two radiators 1 can work at the same frequency or at different frequencies. The at least two radiators 1 are arranged on the middle frame 3 respectively, and can be adjacent or not. In order to make each radiator 1 have good radiation efficiency, a plurality of periodic structures 2 are arranged on the first non-display surface 401 of the screen module 4, so that each radiator 1 is arranged adjacent to at least one periodic structure 2, and each radiator 1 can use the radiator 1 adjacent to it to improve its own radiation efficiency.

[0106] Exemplarily, the number of radiators 1 is, for example, two, three, four, etc., and the number of corresponding periodic structures 2 is also correspondingly, for example, two, three, four, etc.

[0107] It can be understood that the number and position of the radiators 1 in this embodiment are not fixed, and the number and position of the periodic structures 2 need to be reasonably designed or selected according to the number and position of the radiators 1 so that each radiator 1 can have a coupling effect with at least one periodic structure 2.

[0108] On the other hand, combined Figure 5 As shown, this embodiment provides a screen module 4 , which includes a display body 41 and at least one periodic structure 2 ; the at least one periodic structure 2 is located on the second non-display surface 411 of the display body 41 .

[0109] The screen module 4 of this embodiment adopts the antenna module disclosed in the present invention and has all the beneficial technical effects of all the embodiments in this document.

[0110] It should be noted that the display body 41 includes a display panel, and the display panel includes any one of a plasma display panel (Plasma Display Panel, PDP), a vacuum fluorescent display panel (Vacuum Fluorescent Display, VFD), a field emission display panel (Field Emission Display, FED), an electroluminescent display panel (Light Emitting Diode, LED), an organic light-emitting diode display panel (Organic Light-Emitting Diode, OLED), a liquid crystal display panel (Liquid Crystal Display, LCD), a micro-electro-mechanical system display panel (Micro-Electro-Mechanical System, DMD) and an electronic ink (Electroluminance, EL) display panel.

[0111] Combination Figure 5As shown, in some embodiments, the display body 41 includes a metal layer, which is located on the second non-display surface 411 of the display body 41; at least one periodic structure 2 includes a dielectric layer 23, at least two metal unit bodies 21 and at least two metallized holes 22; the dielectric layer 23 is located on the side of the metal layer away from the display body 41, and at least two metal unit bodies 21 are arranged at intervals on the side of the dielectric layer 23 away from the metal layer, and each of the at least two metal unit bodies 21 is electrically connected to the metal layer through the metallized hole 22.

[0112] In the screen module 4 of this embodiment, the metal layer of the display body 41 is used as the floor body 24 in the periodic structure 2, which can reduce the structural complexity of the antenna module, improve the reuse rate of the metal layer of the screen module 4, and reduce the material cost in the electronic device.

[0113] Exemplarily, the metal layer of the display body 41 can be an array drive layer, and the drive circuit of the display panel and at least part of the signal lines (for example, pixel circuits, gate drive circuits, scanning signal lines, data signal lines, light control signal lines, reference voltage signal lines, etc.) can be arranged in the drive array layer.

[0114] On the other hand, an electronic device is provided, which includes the screen module 4 of the present disclosure.

[0115] The electronic device of this embodiment adopts the screen module 4 disclosed in the present invention and has all the beneficial technical effects of all the embodiments in this document.

[0116] In some possible implementations, the electronic device may include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply and other components.

[0117] It should be noted that, in the present disclosure, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0118] In addition, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0119] In the description of this specification, the reference terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0120] The above descriptions are merely embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An antenna module, characterized in that: The antenna module comprises: a radiator (1) and a periodic structure (2); The radiator (1) is arranged adjacent to the periodic structure (2); The periodic structure (2) comprises at least two metal unit bodies (21), at least two metallized holes (22), a dielectric layer (23) and a floor body (24); The at least two metal unit bodies (21) are arranged at intervals on one side of the dielectric layer (23), the floor body (24) is located on the other side of the dielectric layer (23), and each of the at least two metal unit bodies (21) is electrically connected to the floor body (24) via the metallized hole (22).

2. The antenna module according to claim 1, characterized in that: The natural frequency f0 of the periodic structure (2) is equal to the operating frequency f of the radiator (1). 工作频率 .

3. The antenna module according to claim 2, characterized in that: The equivalent inductance value of the periodic structure (2) and the equivalent capacitance value of the periodic structure (2) are determined by the natural frequency f0 of the periodic structure (2).

4. The antenna module according to claim 2, characterized in that: The natural frequency f0 of the periodic structure (2) is determined by formula (a): In formula (a), L is the equivalent inductance value of the periodic structure (2), and C is the equivalent capacitance value of the periodic structure (2); Wherein, the equivalent inductance value L is determined by formula (b): L=μ×h (b) In formula (b), μ is the magnetic permeability of the dielectric layer (23), and h is the thickness of the dielectric layer (23); Wherein, the equivalent inductance value L is determined by formula (c): In formula (c), ε0 is the relative dielectric constant of air, ε r is the relative dielectric constant of the dielectric layer (23), a is the size of the metal unit body (21), and g is the distance between two adjacent metal unit bodies (21).

5. The antenna module according to any one of claims 1 to 4, characterized in that: The periodic structure (2) further comprises a metal foil layer, the metal foil layer being located on one side of the dielectric layer (23), and at least a portion of the metal foil layer forming the at least two metal unit bodies (21).

6. An electronic device, characterized in that: The electronic device comprises the antenna module according to any one of claims 1 to 5.

7. The electronic device according to claim 6, characterized in that: The electronic device also includes a middle frame (3) and a screen module (4); The screen module (4) is located on one side of the middle frame (3), the radiator (1) is located on the middle frame (3), and the periodic structure (2) is located on the first non-display surface (401) of the screen module (4).

8. The electronic device according to claim 7, characterized in that: The middle frame member (3) comprises at least one frame portion, and the radiator (1) is located on the at least one frame portion.

9. The electronic device according to claim 7, characterized in that: The screen module (4) comprises a metal layer (42), and the metal layer (42) is located on a first non-display surface (401) of the screen module (4); At least a portion of the metal layer (42) forms the floor body (24), the dielectric layer (23) is located on a side of the metal layer (42) facing away from the screen module (4), and the at least two metal unit bodies (21) are located on a side of the dielectric layer (23) facing away from the metal layer (42).

10. The electronic device according to any one of claims 7 to 9, characterized in that: The antenna module comprises at least two radiators (1) and at least two periodic structures (2); At least two of the radiators (1) are respectively arranged on the middle frame member (3), at least two of the periodic structures (2) are respectively arranged on the first non-display surface (401) of the screen module (4), and each of the radiators (1) is arranged adjacent to at least one of the periodic structures (2).

11. A screen module, characterized in that: The screen module (4) comprises: a display body (41) and at least one periodic structure (2); the at least one periodic structure (2) is located on the second non-display surface (411) of the display body (41).

12. The screen module according to claim 9, characterized in that: The display body (41) comprises a metal layer (42), and the metal layer (42) is located on a second non-display surface (411) of the display body (41); The at least one periodic structure (2) comprises a dielectric layer (23), at least two metal unit bodies (21) and at least two metallized holes (22); the dielectric layer (23) is located on a side of the metal layer (42) away from the display body (41); the at least two metal unit bodies (21) are arranged at intervals on a side of the dielectric layer (23) away from the metal layer (42); and each of the at least two metal unit bodies (21) is electrically connected to the metal layer (42) via the metallized holes (22).

13. An electronic device, characterized in that: The electronic device comprises the screen module (4) according to claim 11 or 12.

Images