Antenna assembly and mobile terminal

Abstract

The embodiment of the invention provides an antenna assembly and a mobile terminal, and aims to improve the performance of an antenna. The antenna assembly comprises at least one antenna unit, and the antenna unit comprises at least one radiation part and at least one feed-in part electrically connected to the first side of the radiation part; at least part of the grounding layer is located on the first side of the radiation part, the grounding layer and the feed-in parts are arranged in a spaced and insulated mode, the grounding layer comprises at least one first grounding part, and the orthographic projection of the first grounding part on the first reference plane is located between the two adjacent feed-in parts; wherein the first grounding part is provided with at least one groove, and the opening of the groove is located at one side close to the radiation part.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an antenna assembly and a mobile terminal. Background Art

[0002] The functions of wireless communication devices (such as mobile phones, smart watches, etc.) are changing with each passing day, and the market requirements for device appearance and wireless communication performance are also increasing. In order to improve the communication performance of mobile terminals, various antennas are installed in mobile terminals. How to improve the performance of antennas has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide an antenna assembly and a mobile terminal, aiming to improve the performance of the antenna.

[0004] An embodiment of the first aspect of the present application provides an antenna assembly, comprising: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; a grounding layer, at least partially located on the first side of the radiating portion and spaced and insulated from the feeding portion, the grounding layer comprising at least one first grounding portion, the orthographic projection of the first grounding portion on a first reference plane being located between two adjacent feeding portions; wherein the first grounding portion is provided with a groove, the opening of the groove being located close to the side of the radiating portion.

[0005] An embodiment of the first aspect of the present application provides an antenna assembly, comprising: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; a grounding layer, at least partially located on the first side of the radiating portion and spaced and insulated from the feeding portion, the grounding layer comprising at least one first grounding portion, the orthographic projection of the first grounding portion on a first reference plane being located between two adjacent feeding portions; wherein an extension length of the first grounding portion toward an edge of the radiating portion is greater than an extension length of the first grounding portion away from an edge of the radiating portion.

[0006] An embodiment of the first aspect of the present application provides an antenna assembly, comprising: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; a grounding layer, at least partially located on the first side of the radiating portion and spaced and insulated from the feeding portion, the grounding layer comprising at least one grounding portion, a projection of the feeding portion on a first reference plane being located within a projection of the grounding portion, and a width of the grounding portion on a side close to the radiating portion being smaller than a width of the grounding portion on a side away from the radiating portion.

[0007] An embodiment of a second aspect of the present application provides a mobile terminal, comprising an antenna assembly of any one of the above-mentioned embodiments of the first aspect.

[0008] In the antenna assembly provided in the present application, the antenna assembly includes an antenna unit and a grounding layer, the antenna unit includes a radiating portion and a feeding portion, the radiating portion is used to radiate antenna signals, and the feeding portion is used to transmit induced current to the radiating portion. A first grounding portion is provided between two adjacent feeding portions, and a groove with an opening located on one side of the radiating portion is provided on the first grounding portion, so that the path of the induced current flowing between the feeding portion and the first grounding portion is significantly increased, which can reduce the flow intensity of the induced current between the two adjacent first grounding portions, improve the isolation between different antenna units, and thus improve the radiation performance of the antenna unit. Therefore, the embodiment of the present application can effectively improve the performance of the antenna assembly by providing a groove with an opening facing the radiating portion on the first grounding portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0010] Figure 1 is a structural schematic diagram of an antenna assembly provided by an embodiment of a related application;

[0011] Figure 2 is a structural schematic diagram of an antenna assembly provided in an embodiment of the present application;

[0012] Figure 3 yes Figure 2 A schematic diagram of a partially enlarged structure in one example;

[0013] Figure 4 yes Figure 3 A partial cross-sectional view in one example;

[0014] Figure 5 yes Figure 2 A schematic diagram of a partially enlarged structure in another example;

[0015] Figure 6 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0016] Figure 7 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0017] Figure 8 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0018] Fig. 9 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0019] Fig.10 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0020] Fig.11 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example;

[0021] Fig.12 yes Fig.11 A partial cross-sectional view in one example;

[0022] Fig.13 yes Fig.11 A partial cross-sectional view in another example;

[0023] Fig.14 yes Figure 2 A schematic diagram of a partially enlarged structure in yet another example.

[0024] Description of reference numerals:

[0025] 10. Antenna assembly; 11. Metal grid line layer; 111. Metal routing;

[0026] 100, antenna unit; 110, radiation part; 120, feeding part; 130, accommodation gap;

[0027] 200, grounding layer; 210, first grounding portion; 201, first side; 202, second side; 203, grounding portion; 211, wall; 211a, arc edge; 211b, straight edge; 211c, first protrusion; 212, bottom; 212a, first inner edge; 212b, first outer edge; 212c, second protrusion; 212d, first sub-edge; 212e, second sub-edge; 220, groove; 221, first groove; 222, second groove; 230, second grounding portion; 240, third grounding portion; 250, connecting portion;

[0028] 300, dielectric base layer;

[0029] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0031] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] The main difference between the fifth generation of mobile communications (5G) and even 6G and the spectrum of previous communication generations is that they include the millimeter wave (24.25~71.0GHz) frequency band to achieve higher-speed wireless transmission performance and experience. As for the millimeter wave frequency band, the mainstream solution for millimeter wave antennas in handheld terminals is array antennas, that is, antenna arrays composed of multiple antenna units 100 (at least two or more), which can compensate for the high path loss of the millimeter wave band with highly directional radiation, so as to facilitate long-range wireless propagation. However, the mutual coupling between multiple antenna units 100 is often a key factor affecting the performance of the antenna unit 100 and even the entire antenna array. Therefore, efficient decoupling in the antenna array is a very important and popular research and design topic in the antenna field.

[0034] Antenna on Display (AoD) can help alleviate the squeeze on antenna space and location caused by the increasing screen-to-body ratio in 5G and post-5G (beyond 5G, such as 6G, etc.) generations, and reduce the probability of handheld device antennas being blocked by hands, so as to provide a better wireless communication experience and overall product competitiveness. Currently, AoDs are mostly designed as millimeter wave antennas, so AoDs are now mostly in the form of array antennas, and AoDs are embedded in the overall screen module, making the antenna environment very complex. In addition, AoD design must be compatible with optical and touch design considerations, and the antenna and decoupling structure can basically only adopt a planar two-dimensional structure, which further leads to the high difficulty and low effectiveness of traditional decoupling methods, which leads to poor AoD antenna performance and wireless experience.

[0035] In view of this, the present invention proposes an efficient, simple and low-cost decoupling solution, and is particularly suitable for AoD. Therefore, the problem to be solved by the present invention is how to decouple the AoD array antenna efficiently, simply and at low cost, thereby significantly improving the antenna performance and the user's wireless communication experience.

[0036] In order to better understand this application, Figures 1 to 14 The antenna assembly 10 and the mobile terminal according to the embodiment of the present application are described in detail.

[0037] Please also read Figures 2 to 4 , Figure 2 is a structural schematic diagram of an antenna assembly 10 provided in an embodiment of the present application; Figure 3 yes Figure 1 A local enlarged structural diagram of Figure 4 yes Figure 3 A partial cross-sectional view of .

[0038] like Figures 2 to 4 As shown, an embodiment of the first aspect of the present application provides an antenna component 10, the antenna component 10 includes at least one antenna unit 100 and a grounding layer 200, the antenna unit 100 includes at least one radiating portion 110 and at least one feeding portion 120 electrically connected to the first side of the radiating portion 110; at least a portion of the grounding layer 200 is located on the first side of the radiating portion 110, and is spaced and insulated from the feeding portion 120, the grounding layer 200 includes at least one first grounding portion 210, and the orthographic projection of the first grounding portion 210 on the first reference plane is located between two adjacent feeding portions 120; wherein the first grounding portion 210 is provided with a groove 220, and the opening of the groove 220 is located on the side close to the radiating portion 110.

[0039] In the antenna assembly 10 provided in the present application, the antenna assembly 10 includes an antenna unit 100 and a grounding layer 200. The antenna unit 100 includes a radiating portion 110 and a feeding portion 120. The radiating portion 110 is used to radiate antenna signals, and the feeding portion 120 is used to transmit induced current to the radiating portion 110. A first grounding portion 210 is provided between two adjacent feeding portions 120, and a groove 220 with an opening located on one side of the radiating portion 110 is provided on the first grounding portion 210, so that the path of the induced current flowing between the feeding portion 120 and the first grounding portion 210 is significantly increased, which can reduce the induced current flow intensity between the two adjacent first grounding portions 210, improve the isolation between different antenna units 100, and thus improve the radiation performance of the antenna unit 100. Therefore, the embodiment of the present application can effectively improve the performance of the antenna assembly 10 by providing a groove 220 with an opening facing the radiating portion 110 on the first grounding portion 210.

[0040] like Figure 1 It is a structural diagram of an antenna assembly 10 provided in the related art, which is different from the present application in that the groove 220 is not provided on the ground layer 200'. When the ground layer 200' corresponding to the feeding part 120' of the antenna unit 100' is not provided with the groove 220, the induced current caused by a certain feeding part 120' on the corresponding ground layer 200' can directly and strongly flow to the ground layer 200' area corresponding to the feeding part 120' of other antenna units 100', thereby degrading the isolation between the antenna units 100'. In the embodiment of the present application, when the groove 220 is provided on the first ground part 210, the above-mentioned induced current needs to bypass the groove 220, resulting in a significant increase in the path of the induced current flow, thereby greatly reducing the intensity of the induced current flowing to the first ground part 210 corresponding to the feeding part 120 of other antenna units 100, so the isolation between the antenna units 100 can be greatly improved, thereby improving the radiation performance of the antenna, and achieving the purpose of effective decoupling.

[0041] In addition, the embodiment of the present application solves the decoupling problem by providing a groove 220 on the first grounding portion 210, improves antenna performance, does not require additional space, and has the advantages of high design flexibility, fast and uncomplicated design, low design cost and manufacturing cost. When the antenna unit 100 is provided on the touch layer, the feed portion 120 and the grounding layer 200 can be provided on the non-display side, so as not to affect the optical performance and touch performance, and is very suitable for the application of on-screen antennas.

[0042] Optionally, the antenna assembly 10 may further include a dielectric substrate layer 300, and the antenna unit 100 and the ground layer 200 may be disposed on the same side of the dielectric substrate layer 300. When a groove 220 is disposed on the first ground portion 210, a portion of the dielectric substrate layer 300 may be exposed from the groove 220.

[0043] Optionally, the antenna unit 100 may be a millimeter wave antenna or a non-millimeter wave antenna, the millimeter wave antenna is used to transmit and receive millimeter wave antenna signals, and the non-millimeter wave antenna is used to transmit and receive non-millimeter wave antenna signals. The embodiment of the present application is described by taking the antenna unit 100 as a millimeter wave antenna unit 100 as an example.

[0044] The number of antenna units 100 may be one or more. Optionally, the number of antenna units 100 is multiple, and the multiple antenna units 100 are arranged at intervals along the first direction X. Optionally, the feeding portion 120 is located on one side of the radiation portion 110 in the second direction Y.

[0045] In some optional embodiments, please continue to refer to Figures 2 to 4 , two adjacent feeding parts 120 are arranged at intervals in the first direction X.

[0046] Optionally, the groove 220 extends in a second direction Y in a direction away from the radiation portion 110 , and the second direction Y and the first direction X intersect.

[0047] In these optional embodiments, two adjacent feeding portions 120 are arranged at intervals in the first direction X, and the first grounding portion 210 is correspondingly located between the two adjacent feeding portions 120 along the first direction X. The opening of the groove 220 is located on the side close to the radiation portion 110, that is, the groove 220 extends away from the radiation portion 110 in the second direction Y, and the induced current needs to flow around the groove 220. Therefore, the provision of the groove 220 can increase the flow path of the induced current on the first grounding portion 210, can reduce the flow intensity of the induced current between the two adjacent first grounding portions 210, improve the isolation between different antenna units 100, and thus improve the radiation performance of the antenna unit 100.

[0048] Optionally, the first grounding portion 210 includes a first side 201 facing the radiation portion 110 and a second side 202 away from the radiation portion 110 in the second direction Y, and at least a portion of the first side 201 is recessed toward the second side 202 to form a groove 220 .

[0049] In these optional embodiments, the groove 220 on the first grounding portion 210 is formed by at least a portion of the first side 201 being recessed toward the second side 202 , which can increase the flow path of the induced current as much as possible.

[0050] Optionally, the groove 220 penetrates the first grounding portion 210 in a direction perpendicular to the first reference plane, that is, the groove 220 penetrates the first grounding portion 210 along the thickness direction Z.

[0051] In some optional embodiments, the first grounding portion 210 includes at least two wall portions 211 . The two wall portions 211 may be located on both sides of the groove 220 in the first direction X, and the induced current flows between the two wall portions 211 .

[0052] Optional, such as Figure 5 As shown, the two wall portions 211 can be directly connected to each other and enclosed to form a groove 220. That is, the ends of the two wall portions 211 away from the radiation portion 110 are connected to each other to form the groove 220. For example, one end of the two wall portions 211 is spaced from each other, and the other end is connected to each other. For example, the distance between the two wall portions 211 in the first direction X gradually decreases, and the ends of the two wall portions 211 away from the radiation portion 110 are connected to each other to form the groove 220. For example, along the direction away from the radiation portion 110, the distance between the two wall portions 211 in the first direction X gradually decreases.

[0053] In these optional embodiments, the other ends of the two wall portions 211 are directly connected to each other to form a groove 220, which can simplify the shape of the first grounding portion 210. The distance between the two wall portions 211 gradually decreases, and when the induced current flows in the first grounding portion 210, it needs to flow from one of the wall portions 211 to the other wall portion 211 around the groove 220, which can increase the flow path of the induced current.

[0054] Optionally, the wall portion 211 may be a portion of the first grounding portion 210 located on both sides of the groove 220 in the first direction X.

[0055] In some other optional embodiments, such as Figure 3 and Figure 6 As shown, the two walls 211 may be connected to each other through the bottom 212. For example, the first grounding portion 210 includes walls 211 spaced apart along the first direction X, and a bottom 212 connected between two adjacent walls 211, and the walls 211 and the bottom 212 enclose a groove 220.

[0056] In these optional embodiments, by adding the bottom 212, the distance between the two wall portions 211 can be further increased, the flow distance of the current between the two wall portions 211 can be increased, the flow intensity of the induced current between different first ground portions 210 can be better reduced, and the performance of the antenna assembly 10 can be improved.

[0057] Optionally, the wall portion 211 may be a portion of the first grounding portion 210 located on both sides of the groove 220 in the first direction X, and the bottom portion 212 may be a portion of the first grounding portion 210 located on one side of the groove 220 in the second direction Y.

[0058] When the first grounding portion 210 includes the bottom portion 212, the shape of the first grounding portion 210 can be set in various ways, for example, Figure 6As shown, at different locations along the second direction Y, the straight-line distance between the opposite edges of the two wall portions 211 is at least partially different, so as to further increase the flow distance of the current. The straight-line distance is the minimum distance between the two wall portions 211 along the first direction X. Different locations along the second direction Y can be located in a cross section of the same wall portion 211, and the cross section is parallel to the first reference plane.

[0059] Optionally, in the region where the straight-line distances between the opposite edges of the two wall portions 211 are different, the straight-line distances decrease in a direction away from the radiation portion 110. For example, the straight-line distances gradually decrease. Figure 6 As shown, the distance between the spaced-apart wall portions 211 in the first direction X gradually decreases.

[0060] In these optional embodiments, the wall portion 211 is inclined relative to the second direction Y, which can increase the extension length of the wall portion 211 and increase the flow distance of the induced current on the wall portion 211 .

[0061] Optionally, in a cross section parallel to the first direction X, the opposite edges of the two wall portions 211 are symmetrically arranged to simplify the structure of the groove 220 and facilitate the preparation and molding of the groove 220 .

[0062] In some other optional embodiments, Figure 7 As shown, the wall portion 211 has an arc-shaped edge 211 a. Optionally, the arc-shaped edge 211 a is protruded toward the groove 220.

[0063] In these optional embodiments, the wall portion 211 is provided with an arc-shaped edge 211a protruding toward the groove 220, which can further increase the extension length of the wall portion 211 and increase the flow distance of the induced current on the wall portion 211. In addition, by providing the arc-shaped edge 211a, the flow path of the induced current can be changed, thereby increasing the bandwidth of the antenna assembly 10.

[0064] When the wall portion 211 is provided with an arc-shaped edge 211 a , optionally, the arc-shaped edge 211 a is at least located on a side of the wall portion 211 close to the radiation portion 110 .

[0065] For example, the wall portion 211 has a first region and a second region distributed along the second direction Y, the first region is located on the side of the second region facing the radiation portion 110, the second region is located on the side of the first region facing the bottom 212, and the arc edge 211a is at least located in the first region. At the connection position between the feeding portion 120 and the radiation portion 110, the intensity of the induced current is relatively large, and the arc edge 211a is provided near this position, which can better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0066] Or, in some other optional embodiments, such as Figure 8As shown, the edge of the wall portion 211 facing the groove 220 includes a plurality of first protrusions 211 c , and each first protrusion 211 c is arranged to protrude in a direction toward the groove 220 .

[0067] In these optional embodiments, the wall portion 211 is provided with a plurality of first protrusions 211c, and each arc-shaped edge 211a can be located on each first protrusion 211c. By providing a plurality of first protrusions 211c, the extension length of the wall portion 211 can be further increased, the flow distance of the induced current on the wall portion 211 can be increased, and the isolation between different antenna units 100 can be improved.

[0068] Or, in some optional embodiments, such as Figure 3 As shown, the distances between the spaced-apart walls 211 in the first direction X are equal.

[0069] In these optional embodiments, the walls 211 on both sides of the groove 220 in the first direction X are arranged at equal intervals, so that the shapes of the groove 220 and the walls 211 are more regular, which facilitates the preparation and molding of the first grounding portion 210 and can reduce manufacturing costs.

[0070] In some optional embodiments, such as Figure 7 As shown, the wall portion 211 has an arc edge 211a and a straight edge 211b, and the arc edge 211a and the straight edge 211b are connected to each other. The shape of the wall portion 211 is simplified, which facilitates the preparation and molding of the first grounding portion 210 and reduces the manufacturing cost.

[0071] Optionally, when the wall portion 211 includes a straight edge 211b, the straight edge 211b is located on the side of the arc edge 211a away from the radiation portion 110. The arc edge 211a is located on the side of the straight edge 211b close to the radiation portion 110, and the arc edge 211a is arranged in a region with a larger inductive current flow intensity, which can better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0072] In some other optional embodiments, the wall portion 211 may not include the straight edge 211b, and the edges of the wall portion 211 facing the groove 220 are all arc-shaped, which can further increase the extension length of the wall portion 211 and increase the flow distance of the induced current on the wall portion 211.

[0073] In some optional embodiments, such as Figure 3 , Figure 6 and Figure 7 As shown, the bottom 212 is arranged with equal width in the first direction X. That is, the surface of the bottom 212 facing the groove 220 is arranged flat. The shape of the bottom 212 is simplified, the first grounding portion 210 is easily prepared and formed, and the manufacturing cost can be reduced.

[0074] In some other optional embodiments, Fig. 9 As shown, the bottom portion 212 is disposed protrudingly toward the radiation portion 110. For example, the bottom portion 212 has at least one second protrusion 212c, and the second protrusion 212c is disposed protrudingly toward the radiation portion 110.

[0075] In these optional embodiments, the shape of the bottom 212 is irregular, and the bottom 212 protrudes toward the radiation portion 110, which can increase the extension length of the bottom 212 and the flow path length of the induced current on the bottom 212, and can better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0076] Optionally, the bottom 212 has a first inner edge 212a facing the groove 220 and a first outer edge 212b facing away from the groove 220. Fig.10 As shown, the shape of the first outer edge 212b and the shape of the bottom 212 can be matched to simplify the shape of the first grounding portion 210, facilitate the preparation and molding of the first grounding portion 210, and reduce the manufacturing cost. For example, when the bottom 212 protrudes toward the radiation portion 110, the first outer edge 212b and the first inner edge 212a both protrude toward the radiation portion 110, and the first outer edge 212b and the first inner edge 212a can be arranged at equal intervals.

[0077] Or, in some other optional embodiments, such as Figure 8 As shown, the bottom 212 is provided with a plurality of second protrusions 212 c arranged along the first direction X toward the radiation portion 110 , and the second protrusions 212 c are protruded in a direction toward the opening of the groove 220 .

[0078] In these optional embodiments, a plurality of second protrusions 212c are provided on the first inner edge 212a, which can increase the extension length of the first inner edge 212a and increase the flow path length of the induced current on the first inner edge 212a.

[0079] Optionally, the width of the bottom 212 along the second direction Y is set to be equal or varied. Setting the bottom 212 to be equal can simplify the shape of the bottom 212 , and varying the width of the bottom 212 can increase the length of the current flow path.

[0080] Optional, such as Fig. 9 As shown, the bottom 212 is arranged to protrude toward the radiation portion 110, and the bottom 212 has a middle portion located in the first direction X. Along the direction away from the radiation portion 110 and along the direction of the wall portion 211 pointing to the middle portion, the width of the bottom 212 in the first direction X is at least partially increased. For example, the width of the bottom 212 in the second direction Y gradually increases.

[0081] In these optional embodiments, the first inner edge 212a protrudes toward the radiation portion 110, and the first outer edge 212b can extend along the second direction Y, so that the width of the bottom 212 in the second direction Y gradually increases along the direction pointing to the middle of the wall portion 211. On the one hand, the first inner edge 212a protrudes toward the radiation portion 110, which can increase the extension length of the first inner edge 212a and increase the flow path length of the induced current on the first inner edge 212a; on the other hand, the extension of the first outer edge 212b along the second direction Y can simplify the shape of the bottom 212, which is convenient for the preparation and molding of the first grounding portion 210.

[0082] Optionally, the first inner edge 212a may include a first sub-edge 212d and a second sub-edge 212e distributed along the second direction Y, one end of the first sub-edge 212d and the second sub-edge 212e are connected to each other, and the other ends of the first sub-edge 212d and the second sub-edge 212e are connected to the wall portion 211. In the direction approaching the radiation portion 110, the distance between the first sub-edge 212d and the second sub-edge 212e in the first direction X gradually decreases.

[0083] Optionally, the opening of the bottom 212 toward the groove 220 has a first sub-edge 212d and a second sub-edge 212e that intersect and connect, the groove 220 includes a first sub-groove 220 and a second sub-groove 220, and of the two wall portions 211 connected to the bottom 212, one of them and the first sub-edge 212d are enclosed to form a first groove 221, and the other of them and the second sub-edge 212e are enclosed to form a second groove 222.

[0084] In these optional embodiments, one ends of the first sub-edge 212d and the second sub-edge 212e are connected to each other, and the other ends are enclosed with the wall portion 211 to form different grooves 220. The first sub-edge 212d and the wall portion 211 are enclosed to form a first groove 221, and the second sub-edge 212e and the wall portion 211 are enclosed to form a second groove 222. By setting the first groove 221 and the second groove 222, the flow path length of the induced current on the first grounding portion 210 can be further increased.

[0085] Optionally, the vertex where the first sub-edge 212d and the second sub-edge 212e intersect does not exceed the connecting line of the top edges of the two wall portions 211 spaced apart from the first grounding portion 210 in the second direction Y. This is to improve the problem that the positions of the first grounding portion 210 and the antenna unit 100 are easily interfered with each other.

[0086] Optionally, the number of the groove 220 may be one.

[0087] Optionally, along the second direction Y, the width of the groove 220 is at least partially different, for example, the width of the groove 220 gradually decreases to increase the length of the current flow path. And / or, the width of the groove 220 is the same to simplify the shape of the groove 220.

[0088] In some optional embodiments, such as Figure 5 and Figure 6 As shown, along the direction away from the radiation portion 110 , the width of at least a portion of the groove 220 in the first direction X gradually decreases.

[0089] In these optional embodiments, the width of the groove 220 gradually decreases, and the edge of the wall portion 211 toward the groove 220 is inclined relative to the second direction Y, which can increase the extension length of the wall portion 211 toward the edge of the groove 220 and increase the flow path length of the induced current in the wall portion 211.

[0090] And / or, in some optional embodiments, such as Figure 3 As shown, at least part of the groove 220 has a constant width in the first direction X. The shape of the groove 220 is simplified, and the shape of the first grounding portion 210 is simplified, so that the preparation and molding of the first grounding portion 210 is facilitated.

[0091] Optionally, along the direction away from the radiation portion 110, the width of a part of the groove 220 gradually decreases, and the width of another part of the groove 220 is the same; wherein the width of the groove 220 is the width between the inner walls of the groove 220 along the first direction X. That is, the width of a part of the groove 220 remains unchanged, and the width of another part of the groove 220 gradually decreases, which can enrich the arrangement of the groove 220.

[0092] In some optional embodiments, such as Figure 7 As shown, in the same groove 220, the width of some grooves 220 in the first direction X gradually decreases, and the width of other grooves 220 in the first direction X remains unchanged. In order to enrich the arrangement of the grooves 220, while increasing the extension length of some wall portions 211 toward the edge of the groove 220 and increasing the flow path length of the induced current in the wall portion 211, the shape of some grooves 220 can also be simplified.

[0093] Or, in some other optional embodiments, such as Fig. 9As shown, there are multiple grooves 220, and among the multiple grooves 220, the width of at least one groove 220 in the first direction X gradually decreases, and / or the width of at least one groove 220 in the first direction X remains unchanged. In order to enrich the arrangement of the grooves 220, while increasing the extension length of the wall portion 211 toward the edge of some grooves 220 and increasing the flow path length of the induced current in the wall portion 211, the shape of some grooves 220 can also be simplified. Optionally, there are multiple grooves 220, and among the multiple grooves 220, the shape and / or size of at least one groove 220 is different from the shape and / or size of other grooves 220, so as to enrich the arrangement of the grooves 220.

[0094] Optionally, along the second direction Y, the width of at least one of the grooves 220 is different in at least a portion of the width, wherein the width of the groove 220 is the width along the first direction X. By increasing the extension length of the portion of the wall portion 211 toward the edge of the groove 220 , the flow path length of the induced current in the wall portion 211 is increased.

[0095] In some optional embodiments, such as Fig. 9 As shown, a plurality of grooves 220 are disposed on the first grounding portion 210 , and the plurality of grooves 220 are arranged at intervals along the arrangement direction of the plurality of feeding portions 120 .

[0096] In these optional embodiments, a plurality of grooves 220 are provided on the same first grounding portion 210 . When the induced current flows on the first grounding portion 210 , the induced current needs to bypass the plurality of grooves 220 , which can further increase the flow path length of the induced current.

[0097] There are many ways to set the relative position relationship between the ground layer 200 and the feeding part 120, for example, Figure 3 and Figure 4 As shown, in some optional embodiments, the ground layer 200 and the feeding portion 120 are arranged in different layers.

[0098] In these optional embodiments, the ground layer 200 and the feeding part 120 are located in different film layers and are prepared and formed in different process steps, so that the ground layer 200 and the feeding part 120 can be stacked.

[0099] Optionally, when the ground layer 200 and the antenna unit 100 are in different layers, the ground layer 200 is provided on one side or both sides of the thickness direction Z of the antenna unit 100 .

[0100] Optionally, the orthographic projection of the feeding portion 120 on the substrate and the orthographic projection of at least part of the ground layer 200 on the substrate at least partially overlap, so that part of the ground layer 200 and the feeding portion 120 can overlap each other along the thickness direction Z of the display panel.

[0101] Optionally, at least some of the multiple feeding parts 120 are electrically connected to each other.

[0102] In some optional embodiments, such as Figure 3 and Figure 4 As shown, the grounding portion 203 further includes a second grounding portion 230 , and the orthographic projection of the feeding portion 120 on the substrate is located within the orthographic projection of the second grounding portion 230 on the substrate.

[0103] When the grounding layer 200 and the feeding part 120 are arranged in different layers, a second grounding part 230 overlapping the feeding part 120 may be arranged on the grounding layer 200 , and the grounding layer 200 and the feeding part 120 are overlapped with each other through the second grounding part 230 .

[0104] Optionally, the first grounding portion 210 and the second grounding portion 230 are connected and made of the same material, so as to simplify the configuration of the grounding portion 203 .

[0105] In some other optional embodiments, Fig.11 and Fig.12 As shown, the ground layer 200 and the feeding portion 120 can be arranged in the same layer, so that the first ground portion 210 of the ground layer 200 and the feeding portion 120 can be prepared and formed in the same process step, which can simplify the preparation process of the antenna assembly 10.

[0106] When the grounding layer 200 and the feeding portion 120 are arranged in the same layer, optionally, a plurality of feeding portions 120 are arranged at intervals, and an accommodation gap 130 is formed between adjacent feeding portions 120 , and the first grounding portion 210 is located in the accommodation gap 130 .

[0107] In these optional embodiments, when the grounding layer 200 and the feeding portion 120 are in the same layer, the first grounding portion 210 may be located in the accommodation gap 130 between two adjacent feeding portions 120 .

[0108] Optional, such as Fig.11 and Fig.13 As shown, the grounding layer 200 further includes a connecting portion 250 connected between adjacent first grounding portions 210 so that the plurality of first grounding portions 210 have the same potential.

[0109] Optionally, the connection portion 250 and the feeding portion 120 are connected via vias in the same layer or in different layers.

[0110] In some optional embodiments, such as Figures 3 to 13 As shown, the ground layer 200 further includes a third ground portion 240 , and the third ground portion 240 is located at at least one side of the arrangement direction of the plurality of feeding portions 120 .

[0111] In these optional embodiments, the ground layer 200 further includes a third ground portion 240, and the third ground portion 240 is located outside the plurality of feeding portions 120. For example, when the feeding portions 120 are arranged at intervals along the second direction Y, the third ground portion 240 is located on at least one side of the plurality of feeding portions 120 in the second direction Y, which can increase the distribution area of ​​the ground layer 200, improve the anti-electromagnetic interference capability of the antenna assembly 10, and increase the bandwidth of the antenna assembly 10.

[0112] Optionally, the third grounding portion 240 is connected to the second grounding portion 230 and is made of the same material to simplify the configuration of the grounding portion 203 .

[0113] Optionally, there are two third grounding portions 240 located on both sides of the plurality of feeding portions 120 along the arrangement direction, and the feeding portions 120 of the plurality of antenna units 100 are correspondingly located between the two third grounding portions 240 .

[0114] In these optional embodiments, there are two third grounding portions 240, and the two third grounding portions 240 are disposed on two opposite sides of the multiple feeding portions 120, which can further increase the distribution area of ​​the grounding layer 200, further improve the anti-electromagnetic interference capability of the antenna assembly 10, and enhance the bandwidth of the antenna assembly 10.

[0115] In some optional embodiments, such as Figures 3 to 13 As shown, a plurality of antenna units 100 are arranged at intervals along the first direction X, and a plurality of feeding portions 120 are arranged at intervals along the first direction X.

[0116] In these optional embodiments, the antenna assembly 10 includes a plurality of antenna units 100, which can further improve the signal transmission capability of the antenna assembly 10. The plurality of antenna units 100 are arranged at intervals along the first direction X, which can improve the mutual influence between the antenna units 100. The plurality of feeding portions 120 are arranged at intervals along the first direction X, so that the arrangement of the plurality of antenna units 100 and the arrangement of the plurality of feeding portions 120 are more regular.

[0117] Optionally, the feeding parts 120 of the multiple antenna units 100 are spaced apart and insulated from each other, or the feeding parts 120 of at least two antenna units 100 are electrically connected to each other.

[0118] In these optional embodiments, the feeding parts 120 of the plurality of antenna units 100 are spaced and insulated from each other, so that each feeding part 120 and each radiating part 110 are electrically connected to each other and can be used to transmit different wireless signals. The feeding parts 120 of at least two antenna units 100 are electrically connected to each other, so that the two antenna units 100 can be electrically connected to each other as an antenna group for transmitting and receiving wireless signals of different frequencies.

[0119] Optionally, the radiation parts 110 correspond to the feeding parts 120 one by one. Each feeding part 120 is electrically connected to each radiation part 110 , and each feeding part 120 is used to transmit a current signal to each radiation part 110 .

[0120] Optionally, the number of feeding parts 120 in at least one antenna unit 100 is different from the number of feeding parts 120 in other antenna units 100. This enriches the configuration of the antenna units 100 so that different antenna units 100 can be used to transmit and receive signals in different frequency bands.

[0121] Optionally, at least one antenna unit 100 includes one radiating portion 110 and a plurality of feeding portions 120 . The plurality of feeding portions 120 may transmit antenna signals to the same radiating portion 110 .

[0122] Optionally, the distance between adjacent feeding portions 120 in the same antenna unit 100 along the first direction X is smaller than the minimum distance between the feeding portions 120 of two adjacent antenna units 100, so as to improve the problem of signal interference between different antenna units 100.

[0123] Optionally, the radiating portions 110 of at least two of the antenna units 100 have different widths along the first direction X. This enriches the configuration of the antenna units 100 so that different antenna units 100 can be used to transmit and receive signals of different frequency bands.

[0124] Optionally, the width of the radiation portion 110 is positively correlated with the number of the feeding portions 120 of the antenna unit 100 , so that the radiation portion 110 and the feeding portion 120 of each antenna unit 100 are adapted to each other.

[0125] like Figures 2 to 13 As shown, an embodiment of the first aspect of the present application also provides an antenna assembly 10, comprising: at least one antenna unit 100, the antenna unit 100 comprising a radiating portion 110 and at least one feeding portion 120 electrically connected to a first side of the radiating portion 110; a grounding layer 200, at least partially located on the first side of the radiating portion 110, and spaced and insulated from the feeding portion 120, the grounding layer 200 comprising at least one first grounding portion 210, the orthographic projection of the first grounding portion 210 on the first reference plane being located between two adjacent feeding portions 120; wherein an extension length of the first grounding portion 210 toward an edge of the radiating portion 110 is greater than an extension length away from an edge of the radiating portion 110.

[0126] Optionally, the first reference plane is a reference plane, and the first reference plane and the thickness direction Z of the antenna component 10 may be perpendicular. Optionally, when the antenna unit 100 and the ground layer 200 are located in different film layers, the stacking direction of the antenna unit 100 and the ground layer 200 may be the thickness direction Z of the antenna component 10.

[0127] In the embodiment of the present application, the antenna assembly 10 includes an antenna unit 100 and a grounding layer 200. The antenna unit 100 includes a radiating portion 110 and a feeding portion 120. The radiating portion 110 is used to radiate antenna signals, and the feeding portion 120 is used to transmit induced current to the radiating portion 110. A first grounding portion 210 is provided between two adjacent feeding portions 120, and the extension length of the edge toward the radiating portion 110 is greater than the extension length of the edge away from the radiating portion 110, so that the path of the induced current flowing between the feeding portion 120 and the first grounding portion 210 is significantly increased, which can reduce the flow intensity of the induced current between the two adjacent first grounding portions 210, improve the isolation between different antenna units 100, and thus improve the radiation performance of the antenna unit 100. Therefore, the embodiment of the present application can effectively improve the performance of the antenna assembly 10 by providing a groove 220 with an opening toward the radiating portion 110 on the first grounding portion 210.

[0128] The antenna assembly 10 of the embodiment of the present application and the antenna assembly 10 of any of the above embodiments may be cross-referenced to each other.

[0129] like Figures 2 to 13 As shown, an embodiment of the first aspect of the present application also provides an antenna assembly 10, comprising: at least one antenna unit 100, comprising a radiating portion 110 and at least one feeding portion 120 electrically connected to a first side of the radiating portion 110; a grounding layer 200, at least partially located on the first side of the radiating portion 110, and spaced and insulated from the feeding portion 120, the grounding layer 200 comprising at least one grounding portion 203, the orthographic projection of the feeding portion 120 on the first reference plane being located within the orthographic projection of the grounding portion 203 on the first reference plane, and the width of the grounding portion 203 on a side close to the radiating portion 110 being smaller than the width of the grounding portion 203 on a side away from the radiating portion 110.

[0130] In the embodiment of the present application, the antenna assembly 10 includes an antenna unit 100 and a grounding layer 200. The antenna unit 100 includes a radiating portion 110 and a feeding portion 120. The radiating portion 110 is used to radiate antenna signals, and the feeding portion 120 is used to transmit an induced current to the radiating portion 110. The feeding portion 120 corresponds to a grounding portion 203. An induced current can be generated between the feeding portion 120 and the grounding portion 203. The width of the grounding portion 203 close to the radiating portion 110 is smaller than the width of the grounding portion 203 away from the radiating portion 110. The grounding portion 203 has different widths at different positions, and its shape changes slowly in the extension direction of the feeding portion 120 without sudden changes, which can increase the bandwidth of the antenna assembly 10 and can be decoupled to effectively improve the performance of the antenna assembly 10.

[0131] Optionally, the antenna unit 100 includes a plurality of feeding portions 120, each feeding portion 120 is provided with a corresponding grounding portion 203, and two grounding portions 203 corresponding to two adjacent feeding portions 120 are arranged at intervals, so that each grounding portion 203 can cooperate with each feeding portion 120 to adjust the bandwidth of the antenna assembly 10.

[0132] A groove 220 can be formed between two adjacent grounding portions 203. This significantly increases the path of the induced current flowing between the feeding portion 120 and the grounding portion 203, reduces the flow intensity of the induced current corresponding to the two adjacent feeding portions 120, improves the isolation between different antenna units 100, and further improves the radiation performance of the antenna unit 100.

[0133] Optionally, the grounding portion 203 of the embodiment of the present application may include a portion of the two adjacent first grounding portions 210 and a second grounding portion 230 located between the two adjacent first grounding portions 210. For example, the grounding portion 203 includes adjacent walls 211 of the two adjacent first grounding portions 210, and the second grounding portion 230 located between the two adjacent first grounding portions 210. That is, the grounding portion 203 includes a wall portion 211 that is away from its corresponding feeding portion 120, and at least a portion of the wall portions 211 of the two adjacent grounding portions 203 are arranged at intervals.

[0134] Optionally, the arrangement of the wall portion 211 may refer to any of the above embodiments, for example, Figure 5 As shown, one end of the wall portion 211 of two adjacent grounding portions 203 is spaced apart, and the other end is connected to each other to enclose and form a groove 220; or, as shown Figure 6 As shown, one end of the wall portion 211 of two adjacent grounding portions 203 is spaced apart, and the other end is connected to each other through the bottom 212 to enclose a groove 220. That is, the two adjacent grounding portions 203 include two side edges close to each other, one end of the two side edges is spaced apart, and the other end is connected to each other to enclose a groove 220; or, one end of the two side edges of the two adjacent grounding portions 203 is spaced apart, and the other end is connected to each other through the bottom 212 to enclose a groove 220.

[0135] For example, Figure 7 As shown, the wall portion 211 (ie, the above-mentioned side edge) has an arc-shaped edge 211 a and a straight edge 211 b , and the arc-shaped edge 211 a and the straight edge 211 b are connected to each other.

[0136] Optionally, the straight edge 211 b is located on a side of the arc-shaped edge 211 a away from the radiation portion 110 .

[0137] Optionally, the width of the ground portion 203 gradually increases in a direction away from the radiation portion 110 , so that the ground portion 203 can better increase the bandwidth of the antenna assembly 10 .

[0138] like Figure 2 As shown, the embodiment of the second aspect of the present application further provides a mobile terminal, comprising the antenna assembly 10 of any of the above-mentioned first aspect embodiments. Since the mobile terminal provided by the embodiment of the second aspect of the present application comprises the antenna assembly 10 of any of the above-mentioned first aspect embodiments, the mobile terminal provided by the embodiment of the second aspect of the present application has the beneficial effects of the antenna assembly 10 of any of the above-mentioned first aspect embodiments, which will not be described in detail here.

[0139] The mobile terminals in the embodiments of the present application include but are not limited to mobile phones, tablet computers, laptop computers, desktop computers, vehicle-mounted central control systems, vehicle-mounted entertainment display systems, cars, watches, bracelets, televisions, indoor and outdoor display devices, and other devices with wireless signal receiving and sending functions.

[0140] In some optional embodiments, the ground layer 200 and the radiation portion 110 are stacked along a thickness direction Z of the mobile terminal.

[0141] In these optional embodiments, the ground layer 200 and the radiating portion 110 are located in different layer structures to improve the mutual influence between the ground layer 200 and the radiating portion 110 .

[0142] Optionally, the ground layer 200 is located on the non-display side of the mobile terminal, and the radiation portion 110 is located on the display side of the mobile terminal.

[0143] In these optional embodiments, the radiation unit 110 is located on the display side, so that the radiation unit 110 can transmit wireless signals to the outside or receive external wireless signals. The ground layer 200 is located on the non-display side to reduce the area occupied by the antenna assembly 10 on the display side, reduce the area of ​​the non-display area on the display side, and increase the screen-to-body ratio.

[0144] In some optional embodiments, the mobile terminal further includes a metal grid line layer 11 , and the radiation portion 110 is in the same layer as the metal grid line layer 11 and is spaced apart from each other.

[0145] In these optional embodiments, the radiation portion 110 may be located in the metal grid line layer 11 , and the radiation portion 110 is spaced apart from the metal grid layer. The radiation portion 110 is formed by setting a plurality of breakpoints in the metal grid line layer 11 .

[0146] In some optional embodiments, the metal grid line layer 11 includes a metal trace 111 , and the metal trace 111 is disposed between two adjacent radiation portions 110 , or the metal trace 111 is not disposed between two adjacent radiation portions 110 .

[0147] In these optional embodiments, when two adjacent radiating portions 110 are spaced apart, the metal wiring 111 between the two adjacent radiating portions 110 can be retained to simplify the preparation process of the antenna unit 100, or the metal wiring 111 between the two adjacent radiating portions 110 can be removed to improve the problem of mutual influence between different radiating portions 110.

[0148] In some optional embodiments, the metal grid line layer 11 includes metal traces 111 , a metal trace 111 is disposed between two adjacent radiation portions 110 , and a density of the metal traces 111 between two adjacent radiation portions 110 is less than a density of the metal traces 111 within the radiation portion 110 .

[0149] In these optional embodiments, the density of the metal routing lines 111 within the radiating portion 110 is high, which can improve the ability of the radiating portion 110 to send and receive wireless signals. The density of the metal routing lines 111 between two adjacent radiating portions 110 is relatively low, which can improve the problem of mutual influence between different radiating portions 110.

[0150] Optionally, the mobile terminal includes a flexible circuit board, and the feeding part 120 and the ground layer 200 can be arranged on the flexible circuit board. The flexible circuit board is bent from the display side to the non-display side, so that the feeding part 120 and the ground layer 200 are arranged on the non-display side of the mobile terminal to reduce the distribution area of ​​the non-display area on the display side and improve the screen-to-body ratio of the mobile terminal.

[0151] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An antenna assembly, characterized in that: include: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; A grounding layer, at least partially located on a first side of the radiating portion and spaced and insulated from the feeding portion, the grounding layer comprising at least one first grounding portion, an orthographic projection of the first grounding portion on the first reference plane being located between two adjacent feeding portions; Wherein, the first grounding portion is provided with at least one groove, and an opening of the groove is located close to a side of the radiation portion.

2. The antenna assembly according to claim 1, characterized in that: Two adjacent feeding portions are spaced apart in the first direction; Preferably, the first grounding portion includes a first side edge facing the radiation portion and a second side edge away from the radiation portion in a second direction, at least a portion of the first side edge is recessed toward the second side edge to form the groove, and the second direction intersects with the first direction; Preferably, the groove passes through the first grounding portion in a direction perpendicular to the first reference plane.

3. The antenna assembly according to claim 1, characterized in that: The first grounding portion includes at least two wall portions, and ends of the two wall portions away from the radiation portion are connected to each other to form the groove.

4. The antenna assembly according to claim 1, characterized in that: The first grounding portion includes wall portions spaced apart along the first direction, and a bottom portion connected between two adjacent wall portions, wherein the wall portion and the bottom portion enclose the groove; Preferably, at different positions along the second direction, the straight-line distance between the opposite edges of the two wall portions is at least partially different; wherein the straight-line distance is the minimum distance along the first direction; Preferably, in the region where the straight-line distances between the opposite edges of the two wall portions are different, the straight-line distances decrease in a direction away from the radiation portion; Preferably, the straight-line distance gradually decreases in a direction away from the radiation portion; Preferably, in a cross section parallel to the first direction, opposite edges of the two wall portions are symmetrically arranged.

5. The antenna assembly according to claim 4, characterized in that: The wall portion has an arc-shaped edge; Alternatively, the edge of the wall portion facing the groove includes a plurality of first protrusions, and each of the first protrusions is arranged to protrude in a direction toward the groove; Preferably, the arc-shaped edge is at least located on one side of the wall portion close to the radiation portion; Preferably, the wall portion has an arcuate edge and a straight edge, and the arcuate edge and the straight edge are connected to each other; Preferably, the straight edge is located on a side of the arc-shaped edge away from the radiation portion.

6. The antenna assembly according to claim 4, characterized in that: The surface of the bottom facing the groove is arranged flat; Alternatively, the bottom has at least one second protrusion, and the second protrusion is protruded toward the radiation portion; Alternatively, the bottom portion is provided with a plurality of second protrusions arranged along the first direction toward the radiation portion, and the second protrusions are provided to protrude in a direction toward the opening of the groove; Preferably, the width of the bottom along the second direction is set to be equal width or variable width; Preferably, the bottom is protruding toward the radiation portion, and the bottom has a middle portion located in the first direction, and along a direction away from the radiation portion, a width of the bottom in the first direction at least partially increases; Preferably, the bottom has a first sub-edge and a second sub-edge intersecting and connected, the groove includes a first sub-groove and a second sub-groove, and one of the two wall portions connected to the bottom and the first sub-edge encloses the first sub-groove, and the other and the second sub-edge enclose the second sub-groove; Preferably, the vertex where the first sub-edge intersects the second sub-edge does not exceed a line connecting top edges of two spaced-apart wall portions of the first grounding portion in the second direction.

7. The antenna assembly according to claim 1, characterized in that: The number of the grooves on the first grounding portion is one, and the widths of the grooves are at least partially different along the second direction; and / or the widths of the grooves are the same; Preferably, along a direction away from the radiation portion, the width of a partial area of ​​the groove gradually decreases, and the width of another partial area of ​​the groove is the same; The width of the groove is the width between inner walls of the groove along the first direction.

8. The antenna assembly according to claim 1, characterized in that: There are multiple grooves on the same first grounding portion, and among the multiple grooves, the shape and / or size of at least one groove is different from the shapes and / or sizes of the other grooves; Preferably, along the second direction, the width of at least one of the grooves is different in at least a portion of the width; Wherein, the width of the groove is the width along the first direction.

9. The antenna assembly according to claim 1, characterized in that: The first grounding portion is provided with a plurality of grooves, and the plurality of grooves are arranged at intervals along an arrangement direction of the plurality of feeding portions.

10. The antenna assembly according to claim 1, characterized in that: The ground layer and the feeding part are arranged in different layers; Preferably, a projection of the feeding portion along a thickness direction of the ground layer and a projection of at least a portion of the ground layer along the thickness direction at least partially overlap; Preferably, at least some of the plurality of feeding parts are electrically connected to each other.

11. The antenna assembly according to claim 10, characterized in that: The grounding portion further includes a second grounding portion, and the orthographic projection of the feeding portion along the thickness direction of the grounding layer is located within the orthographic projection of the second grounding portion along the thickness direction of the grounding layer; Preferably, the first grounding portion and the second grounding portion are connected and made of the same material.

12. The antenna assembly according to claim 11, characterized in that: The grounding layer further includes a third grounding portion, and the third grounding portion is located at least on one side of the arrangement direction of the plurality of feeding portions; Preferably, the number of the third grounding portions is two, which are located on both sides of the plurality of feeding portions along the arrangement direction, and the feeding portions of the plurality of antenna units are correspondingly located between the two third grounding portions; Preferably, the third grounding portion is connected to the second grounding portion and is made of the same material.

13. The antenna assembly according to claim 1, characterized in that: The ground layer and the feeding part are arranged on the same layer; Preferably, a plurality of the feeding portions are arranged at intervals, and an accommodation gap is formed between adjacent feeding portions, and the first grounding portion is located in the accommodation gap; Preferably, the grounding layer further comprises a connecting portion connected between adjacent first grounding portions; Preferably, the connecting portion and the first grounding portion are connected through via holes in the same layer or in different layers.

14. The antenna assembly according to claim 1, characterized in that The plurality of antenna units are arranged at intervals along a first direction, and the plurality of feeding portions are arranged at intervals along the first direction; Preferably, the feeding parts of the plurality of antenna units are spaced and insulated from each other, or the feeding parts of at least two antenna units are electrically connected to each other; Preferably, the radiation part corresponds to the feeding part one by one; Alternatively, the number of feeding portions in at least one antenna unit is different from the number of feeding portions in other antenna units; Preferably, at least one antenna unit comprises one said radiating portion and a plurality of said feeding portions; Preferably, the distance between adjacent feeding parts in the same antenna unit along the first direction is smaller than the minimum distance between the feeding parts of two adjacent antenna units; Preferably, the radiating portions of at least two of the antenna units have different widths along the first direction. Preferably, the width of the radiating portion is positively correlated with the number of the feeding portions of the antenna unit.

15. An antenna assembly, characterized in that: include: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; A grounding layer, at least partially located on a first side of the radiating portion and spaced and insulated from the feeding portion, the grounding layer comprising at least one first grounding portion, an orthographic projection of the first grounding portion on the first reference plane being located between two adjacent feeding portions; Wherein, an extension length of the first grounding portion toward an edge of the radiating portion is greater than an extension length of the first grounding portion away from an edge of the radiating portion.

16. An antenna assembly, characterized in that: include: at least one antenna unit, the antenna unit comprising at least one radiating portion and at least one feeding portion electrically connected to a first side of the radiating portion; A grounding layer is at least partially located on the first side of the radiating portion and is spaced and insulated from the feeding portion. The grounding layer includes at least one grounding portion. The projection of the feeding portion on the first reference plane is located within the projection of the grounding portion. The width of the grounding portion on a side close to the radiating portion is smaller than the width of the grounding portion on a side away from the radiating portion.

17. The antenna assembly according to claim 16, characterized in that: The plurality of antenna units include a plurality of feeding parts, each of the feeding parts is correspondingly provided with the grounding part, and the two grounding parts corresponding to two adjacent feeding parts are arranged at intervals; Preferably, two adjacent grounding portions enclose each other to form a groove; Preferably, two adjacent grounding portions include two side edges close to each other, one end of the two side edges are spaced apart, and the other end are connected to each other to enclose the groove; or, one end of the two side edges of two adjacent grounding portions are spaced apart, and the other end are connected to each other through the bottom to enclose the groove; Preferably, the side edge has an arcuate edge and a straight edge, and the arcuate edge and the straight edge are connected to each other; Preferably, the straight edge is located on a side of the arc-shaped edge away from the radiation portion; Preferably, along a direction away from the radiation portion, a width of the ground portion gradually increases.

18. A mobile terminal, characterized in that: The invention comprises the antenna assembly as described in any one of claims 1 to 17.

19. The mobile terminal according to claim 18, characterized in that: The ground layer and the radiation portion are stacked along the thickness direction of the mobile terminal; Preferably, the ground layer is located on a non-display side of the mobile terminal, and the radiating portion is located on a display side of the mobile terminal.

20. The mobile terminal according to claim 18, characterized in that: The mobile terminal further includes a metal grid line layer, and the radiation portion is in the same layer as the metal grid line layer and is spaced apart from the metal grid line layer.

21. The mobile terminal according to claim 20, characterized in that: The metal grid line layer includes metal routing lines, and the metal routing lines are arranged between two adjacent radiating portions, or the metal routing lines are not arranged between two adjacent radiating portions.

22. The mobile terminal according to claim 20, characterized in that: The metal grid line layer includes metal routing lines, and the metal routing lines are arranged between two adjacent radiating portions, and the density of the metal routing lines between the two adjacent radiating portions is less than the density of the metal routing lines in the radiating portions.

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