Antenna assembly and mobile terminal

Abstract

The embodiment of the present application provides an antenna assembly and a mobile terminal, and aims at improving the performance of an antenna. The antenna assembly comprises: at least one antenna unit, the antenna unit comprising at least one radiation part and at least one feed-in part electrically connected to the first side of the radiation part; a ground layer, at least partially located on the first side of the radiation part and insulated from the feed-in part, the ground layer comprising at least one first ground part, and the orthographic projection of the first ground part on a first reference surface is located between two adjacent feed-in parts; wherein the first ground part is provided with at least one groove, and the opening of the groove is located on the side close to the radiation part.

Description

TECHNICAL FIELD

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

[0002] The functions of wireless communication devices (such as mobile phones, smart watches, etc.) are changing rapidly, and the market requirements for device appearance and wireless communication performance are also increasing. In order to improve the communication performance of the mobile terminal, various antennas are installed in the mobile terminal. How to improve the performance of the antenna has become a technical problem to be solved. SUMMARY

[0003] Embodiments of the present application provide an antenna assembly and a mobile terminal, which aims 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 radiation part and at least one feed-in part electrically connected to a first side of the radiation part; a ground layer, at least partially located on the first side of the radiation part and spaced and insulated from the feed-in part, the ground layer comprising at least one first ground part, the orthographic projection of the first ground part on a first reference plane being located between two adjacent feed-in parts; wherein the first ground part is provided with a groove, and the opening of the groove is located close to the radiation part.

[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 radiation part and at least one feed-in part electrically connected to a first side of the radiation part; a ground layer, at least partially located on the first side of the radiation part and spaced and insulated from the feed-in part, the ground layer comprising at least one first ground part, the orthographic projection of the first ground part on a first reference plane being located between two adjacent feed-in parts; wherein the first ground part is provided with a groove, and the opening of the groove is located close to the radiation part.

[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 radiation part and at least one feed-in part electrically connected to a first side of the radiation part; a ground layer, at least partially located on the first side of the radiation part and spaced and insulated from the feed-in part, the ground layer comprising at least one ground part, the projection of the feed-in part on a first reference plane being located within the projection of the ground part, and the width of the ground part close to the radiation part being smaller than the width of the ground part away from the radiation part.

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

[0008] In the antenna assembly provided in the application, the antenna assembly comprises an antenna unit and a ground layer, the antenna unit comprises a radiation part and a feed-in part, the radiation part is used for radiating an antenna signal, and the feed-in part is used for transmitting an induced current to the radiation part. A first ground part is arranged between two adjacent feed-in parts, and a groove with an opening located on one side of the radiation part is arranged on the first ground part, so that the path of the induced current flowing between the feed-in part and the first ground part is significantly increased, the intensity of the induced current flowing between the two adjacent first ground parts is reduced, the isolation between different antenna units is improved, and the radiation performance of the antenna unit is improved. Therefore, by arranging the groove with the opening facing the radiation part on the first ground part, the performance of the antenna assembly can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the drawings, in which like reference numerals represent like features.

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

[0011] Figure 2 is a structural schematic diagram of an antenna assembly provided by related application embodiments;

[0012] Figure 3 is Figure 2 is a partial enlarged structural schematic diagram in an example;

[0013] Figure 4 is Figure 3 is a partial sectional view in an example;

[0014] Figure 5 is Figure 2 is a partial enlarged structural schematic diagram in another example;

[0015] Figure 6 is Figure 2 is a partial enlarged structural schematic diagram in still another example;

[0016] Figure 7 is Figure 2 is a partial enlarged structural schematic diagram in still another example;

[0017] Figure 8 is Figure 2 is a partial enlarged structural schematic diagram in still another example;

[0018] Figure 9 is Figure 2 is a partial enlarged structural schematic diagram in still another example;

[0019] Figure 10 is Figure 2 schematic diagram of a partial enlarged structure in another example;

[0020] Figure 11 is Figure 2 schematic diagram of a partial enlarged structure in another example;

[0021] Figure 12 is Figure 11 partial sectional view in an example;

[0022] Figure 13 is Figure 11 partial sectional view in another example;

[0023] Figure 14 is Figure 2 schematic diagram of a partial enlarged structure in another example.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 10, antenna assembly; 11, metal mesh line layer; 111, metal trace;

[0026] 100, antenna unit; 110, radiating part; 120, feeding part; 130, accommodating gap;

[0027] 200, ground layer; 210, first ground part; 201, first side edge; 202, second side edge; 203, ground part; 211, wall part; 211a, arc-shaped edge; 211b, straight edge; 211c, first protrusion; 212, bottom part; 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 ground part; 240, third ground part; 250, connecting part;

[0028] 300, dielectric substrate layer;

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

[0030] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely intended to provide a more detailed understanding of the present application. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid obscuring the application; and, for clarity, some structures can be exaggerated in the drawings. In addition, features described below can be combined in any suitable manner in one or more embodiments.

[0031] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The main difference between the fifth generation mobile communication (5G) and 6G and previous generations of communication spectrum is that it includes the millimeter wave (24.25-71.0 GHz) frequency band to achieve higher speed wireless transmission performance and experience. For the millimeter wave frequency band, the mainstream solution for millimeter wave antennas in handheld terminals is array antenna, that is, an antenna array composed of multiple antenna elements 100 (at least two or more). The high directivity radiation can compensate for the high path loss of the millimeter wave band, which is beneficial for long-distance wireless propagation. However, the mutual coupling between multiple antenna elements 100 is often a key factor affecting the performance of the antenna element 100 and even the entire antenna array, so 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 be used in 5G and beyond 5G (such as 6G) generations to help alleviate the problem of antenna space and setting position being squeezed due to the increasing screen ratio, and to reduce the probability of handheld device antenna being blocked by hands, so as to help better wireless communication experience and product comprehensive competitiveness. Currently, AoD is mostly designed as a millimeter wave antenna, so AoD is mostly in the form of an array antenna, and AoD is embedded in the overall screen module, so the environment of the antenna is very complex, and AoD design also needs to be compatible with optical and touch design considerations, and the antenna and decoupling structure can basically only use a planar two-dimensional structure, so it further leads to high difficulty and low effectiveness of traditional decoupling methods, that is, it leads to poor AoD antenna performance and wireless experience.

[0035] Therefore, the present application provides an efficient, simple and low-cost decoupling scheme, which is particularly suitable for AoD. The problem to be solved by the present application is how to efficiently, simply and low-cost decouple AoD array antenna to significantly improve antenna performance and user wireless communication experience.

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

[0037] Please refer to Figures 2 to 4 , Figure 2 is a structural schematic diagram of an antenna assembly 10 provided by the embodiment of the present application; Figure 3 is Figure 1 a partial enlarged structural schematic diagram of Figure 4 is Figure 3 a partial sectional view of

[0038] As Figures 2 to 4 shown, the embodiment of the first aspect of the present application provides an antenna assembly 10, which comprises at least one antenna unit 100 and a ground layer 200. The antenna unit 100 comprises at least one radiation part 110 and at least one feed-in part 120 electrically connected to the first side of the radiation part 110. At least part of the ground layer 200 is located on the first side of the radiation part 110 and is insulated from the feed-in part 120. The ground layer 200 comprises at least one first ground part 210, and the orthographic projection of the first ground part 210 on the first reference surface is located between two adjacent feed-in parts 120. The first ground part 210 is provided with a groove 220, and the opening of the groove 220 is located close to the side of the radiation part 110.

[0039] In the antenna assembly 10 provided in the application, the antenna assembly 10 comprises an antenna unit 100 and a ground layer 200, the antenna unit 100 comprises a radiation part 110 and a feed-in part 120, the radiation part 110 is used for radiating antenna signals, and the feed-in part 120 is used for transmitting induced current to the radiation part 110. A first ground part 210 is arranged between two adjacent feed-in parts 120, and a groove 220 with an opening located on one side of the radiation part 110 is arranged on the first ground part 210, so that the path of the induced current flowing between the feed-in part 120 and the first ground part 210 is significantly increased, the intensity of the induced current flowing between the two adjacent first ground parts 210 can be reduced, the isolation between different antenna units 100 is improved, and the radiation performance of the antenna unit 100 is improved. Therefore, by arranging the groove 220 with the opening facing the radiation part 110 on the first ground part 210, the performance of the antenna assembly 10 can be effectively improved.

[0040] As Figure 1 A structure diagram of an antenna assembly 10 provided in the related art is different from the application in that the groove 220 is not arranged on the ground layer 200'. When the groove 220 is not arranged on the ground layer 200' corresponding to the feed-in part 120' of the antenna unit 100', the induced current caused by the certain feed-in part 120' on the ground layer 200' can directly and strongly flow to the region of the ground layer 200' corresponding to the feed-in part 120' of the other antenna unit 100', so that the isolation between the antenna units 100' is deteriorated. In the embodiment of the application, when the groove 220 is arranged on the first ground part 210, the above-mentioned induced current needs to bypass the groove 220, which significantly increases the path of the induced current, so that the intensity of the induced current flowing to the first ground part 210 corresponding to the feed-in part 120 of the other antenna unit 100 is greatly reduced, so that the isolation between the antenna units 100 can be greatly improved, and the radiation performance of the antenna is improved, thereby achieving the purpose of effective decoupling.

[0041] In addition, the embodiment of the application solves the decoupling problem by arranging the groove 220 on the first ground part 210 to improve the performance of the antenna, without occupying extra space, and has the advantages of high design flexibility, fast and simple design, low design and manufacturing costs, etc. When the antenna unit 100 is arranged on the touch layer, the feed-in part 120 and the ground layer 200 can be arranged on the non-display side, so as not to affect the optical performance and the touch performance, which is very suitable for the application of on-screen antennas.

[0042] Optionally, the antenna assembly 10 can further comprise a dielectric substrate layer 300, and the antenna unit 100 and the ground layer 200 can be arranged on the same side of the dielectric substrate layer 300. When the groove 220 is arranged on the first ground part 210, part of the dielectric substrate layer 300 can be exposed by the groove 220.

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

[0044] The number of antenna units 100 can 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 feed-in part 120 is located on one side of the radiation part 110 in the second direction Y.

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

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

[0047] In these optional embodiments, the two adjacent feed-in parts 120 are arranged at intervals in the first direction X, and the first ground part 210 is located between the two adjacent feed-in parts 120 along the first direction X. The opening of the groove 220 is located close to the radiation part 110, that is, the groove 220 extends away from the radiation part 110 in the second direction Y, and the induced current needs to flow around the groove 220, so that the groove 220 can increase the flow path of the induced current on the first ground part 210, reduce the flow intensity of the induced current between the two adjacent first ground parts 210, improve the isolation degree between different antenna units 100, and further improve the radiation performance of the antenna unit 100.

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

[0049] In these optional embodiments, the groove 220 on the first ground part 210 is formed by recessing at least part of the first side edge 201 towards the second side edge 202, which can increase the flow path of the induced current as much as possible.

[0050] Optionally, the groove 220 penetrates the first ground part 210 in the direction perpendicular to the first reference plane, that is, the groove 220 penetrates the first ground part 210 in the thickness direction Z.

[0051] In some optional embodiments, the first ground part 210 includes at least two wall parts 211, and the two wall parts 211 can be located on both sides of the groove 220 in the first direction X, and the induced current flows between the two wall parts 211.

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

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

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

[0055] In some other alternative embodiments, such as Figure 3 and Figure 6 As shown, the two wall portions 211 can also be connected to each other via the bottom portion 212. For example, the first grounding portion 210 includes wall portions 211 spaced apart along the first direction X, and a bottom portion 212 connected between two adjacent wall portions 211, the wall portions 211 and the bottom portion 212 forming a groove 220.

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

[0057] Optionally, the wall portion 211 can be the portion of the first ground portion 210 located on both sides of the groove 220 in the first direction X, and the bottom portion 212 can be the portion of the first ground 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 212, the shape of the first grounding portion 210 can be configured in various ways, for example, as follows: Figure 6As shown, the linear distance between the opposite edges of the two wall portions 211 is at least partially different at different positions along the second direction Y, so as to further increase the flow distance of the induced current. The linear distance is the minimum distance between the two wall portions 211 along the first direction X. The different positions along the second direction Y can be located at the same cross section of the wall portion 211, which is parallel to the first reference plane.

[0059] Optionally, the linear distance between the opposite edges of the two wall portions 211 decreases in a direction away from the radiating portion 110. For example, the linear distance gradually decreases. In the direction away from the radiating portion 110, the linear distance between the opposite edges of the two wall portions 211 gradually decreases. Figure 6 As shown, the distance between the wall portions 211 gradually decreases along the first direction X.

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

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

[0062] In other optional embodiments, as shown in FIG. 6, the wall portions 211 have arc-shaped edges 211a. Optionally, the arc-shaped edges 211a are convexly arranged towards the groove 220. Figure 7

[0063] In these optional embodiments, the wall portions 211 are provided with the arc-shaped edges 211a convexly arranged towards the groove 220, which can further increase the extension length of the wall portions 211 and increase the flow distance of the induced current on the wall portions 211. In addition, by arranging the arc-shaped edges 211a, the flow path of the induced current can be changed, and the bandwidth of the antenna assembly 10 can be widened.

[0064] When the wall portions 211 are provided with the arc-shaped edges 211a, the arc-shaped edges 211a can be located at least on the side of the wall portions 211 close to the radiating portion 110.

[0065] For example, the wall portions 211 have 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 close to the radiating portion 110, the second region is located on the side of the first region close to the bottom portion 212, and the arc-shaped edges 211a are located at least on the first region. The intensity of the induced current is relatively large at the connection position of the feeding portion 120 and the radiating portion 110, and the arc-shaped edges 211a are arranged close to the position, which can better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0066] Alternatively, in other optional embodiments, as shown in FIG. 7, the wall portions 211 have arc-shaped edges 211a. Figure 8 ​As shown, the wall portion 211 comprises a plurality of first protrusions 211c towards the edge of the groove 220, each first protrusion 211c protrudes in the direction towards the groove 220.

[0067] In these alternative embodiments, the wall portion 211 is provided with a plurality of first protrusions 211c, each arc-shaped edge 211a can be located at 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 is increased, and the isolation between different antenna units 100 is improved.

[0068] Alternatively, in still some alternative embodiments, as shown in Figure 3 The wall portions 211 arranged at intervals have equal distances in the first direction X.

[0069] In these alternative embodiments, the wall portions 211 located on both sides of the groove 220 in the first direction X are arranged at equal intervals, so that the shape of the groove 220 and the shape of the wall portion 211 are more regular, facilitating the preparation and molding of the first ground portion 210, and the manufacturing cost can be reduced.

[0070] In some alternative embodiments, as shown in Figure 7 The wall portion 211 has an arc-shaped edge 211a and a straight edge 211b, and the arc-shaped 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 ground portion 210, and the manufacturing cost can be reduced.

[0071] Alternatively, when the wall portion 211 comprises a straight edge 211b, the straight edge 211b is located on the side of the arc-shaped edge 211a away from the radiating portion 110. The arc-shaped edge 211a is located on the side of the straight edge 211b close to the radiating portion 110. The arc-shaped edge 211a is arranged in a region where the induced current is less intense, which can better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0072] In still some alternative embodiments, the wall portion 211 can also not comprise a straight edge 211b, and the edge of the wall portion 211 towards the groove 220 is 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 alternative embodiments, as shown in Figure 3 , Figure 6 and Figure 7 The bottom portion 212 is arranged with equal width in the first direction X. That is, the surface of the bottom portion 212 towards the groove 220 is flat. The shape of the bottom portion 212 is simplified, which facilitates the preparation and molding of the first ground portion 210, and the manufacturing cost can be reduced.

[0074] In other optional embodiments, as shown in FIG. 2B, the bottom portion 212 is protruded towards the radiating portion 110. For example, the bottom portion 212 has at least one second protrusion 212c which is protruded towards the radiating portion 110. Figure 9

[0075] In these optional embodiments, the bottom portion 212 is irregularly shaped and protruded towards the radiating portion 110, which can increase the extension length of the bottom portion 212 and the flow path length of the induced current on the bottom portion 212, and better reduce the flow intensity of the induced current and better improve the performance of the antenna assembly 10.

[0076] Optionally, the bottom portion 212 has a first inner edge 212a towards the groove 220 and a first outer edge 212b away from the groove 220, as shown in FIG. 2A, the shape of the first outer edge 212b can be adapted to the shape of the bottom portion 212 to simplify the shape of the first ground portion 210 and facilitate the preparation of the first ground portion 210, which can reduce the manufacturing cost. For example, when the bottom portion 212 is protruded towards the radiating portion 110, the first outer edge 212b and the first inner edge 212a are both protruded towards the radiating portion 110, and the first outer edge 212b and the first inner edge 212a can be arranged at equal intervals. Figure 10

[0077] Alternatively, in other optional embodiments, as shown in FIG. 2B, the bottom portion 212 is provided with a plurality of second protrusions 212c arranged along the first direction X towards the radiating portion 110, and the second protrusions 212c are protruded towards the opening of the groove 220. Figure 8

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

[0079] Optionally, the width of the bottom portion 212 along the second direction Y is arranged at equal width or variable width. The equal width of the bottom portion 212 can simplify the shape of the bottom portion 212, and the variable width of the bottom portion 212 can increase the flow path length of the current.

[0080] Optionally, as shown in FIG. 2B, the bottom portion 212 is protruded towards the radiating portion 110, and the bottom portion 212 has a middle portion along the first direction X, and the width of the bottom portion 212 along the first direction X is at least partially increased along the direction away from the radiating portion 110 and along the direction of the wall portion 211 pointing to the middle portion. For example, the width of the bottom portion 212 along the second direction Y is gradually increased. Figure 9

[0081] ​​​​In these optional embodiments, the first inner edge 212a is convex towards the radiating portion 110, and the first outer edge 212b can extend along the second direction Y such that the width of the bottom portion 212 in the second direction Y gradually increases in a direction pointing to the middle portion along the wall portion 211. On one hand, the first inner edge 212a being convex towards the radiating portion 110 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 first outer edge 212b extending along the second direction Y can simplify the shape of the bottom portion 212 and facilitate the preparation and molding of the first grounding portion 210.

[0082] Optionally, the first inner edge 212a can 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 being connected to each other, and the other end of the first sub-edge 212d and the second sub-edge 212e being connected to the wall portion 211. In a direction close to the radiating 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 first sub-edge 212d and the second sub-edge 212e connected to each other at the opening of the groove 220, the groove 220 includes a first sub-groove 220 and a second sub-groove 220, and the two wall portions 211 connected to the bottom portion 212, one of which and the first sub-edge 212d enclose the first groove 221, and the other and the second sub-edge 212e enclose the second groove 222.

[0084] In these optional embodiments, one end of the first sub-edge 212d and the second sub-edge 212e is connected to each other, and the other end encloses different grooves 220 with the wall portion 211, the first sub-edge 212d and the wall portion 211 enclosing the first groove 221, and the second sub-edge 212e and the wall portion 211 enclosing the second groove 222. By providing 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 line connecting the top edges of the two wall portions 211 spaced apart in the second direction Y of the first grounding portion 210. This can improve the problem of mutual interference between the first grounding portion 210 and the antenna unit 100.

[0086] Optionally, the number of grooves 220 can be one.

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

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

[0089] In these optional embodiments, the width of the groove 220 gradually decreases, and the wall portion 211 is inclined relative to the second direction Y towards the edge of the groove 220, which can increase the extension length of the wall portion 211 towards 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, as shown in Figure 3 the width of at least part of the groove 220 is the same in the first direction X. To simplify the shape of the groove 220, simplify the shape of the first grounding portion 210, and facilitate the preparation and molding of the first grounding portion 210.

[0091] Optionally, the width of part of the groove 220 gradually decreases in the direction away from the radiation portion 110, 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 in the first direction X. That is, the width of part of the groove 220 is the same, and the width of another part of the groove 220 gradually decreases, which can enrich the setting mode of the groove 220.

[0092] In some optional embodiments, as shown in Figure 7 in the same groove 220, part of the groove 220 gradually decreases in the first direction X, and another part of the groove 220 is the same in the first direction X. To enrich the setting mode of the groove 220, while increasing the extension length of part of the wall portion 211 towards the edge of the groove 220 and increasing the flow path length of the induced current in the wall portion 211, it can also simplify the shape of part of the groove 220.

[0093] Or, in other optional embodiments, as shown in Figure 9As shown, the number of grooves 220 is multiple, 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 is constant. In this way, the setting mode of the grooves 220 is diversified, the extension length of the wall portion 211 towards the edge of part of the grooves 220 is increased, and the flow path length of the induced current in the wall portion 211 is increased, while the shape of part of the grooves 220 is simplified. Alternatively, the number of grooves 220 is multiple, and among the multiple grooves 220, the shape and / or size of at least one groove 220 is different from that of the other grooves 220, so as to diversify the setting mode of the grooves 220.

[0094] Alternatively, along the second direction Y, the width of at least one groove 220 in at least part of the region is different, wherein the width of the groove 220 is the width in the first direction X. In this way, the extension length of part of the wall portion 211 towards the edge of the groove 220 is increased, and the flow path length of the induced current in the wall portion 211 is increased.

[0095] In some alternative embodiments, as shown in FIG. 6, the first ground portion 210 is provided with a plurality of grooves 220, and the plurality of grooves 220 are arranged in the arrangement direction of the plurality of feed-in portions 120. Figure 9 As shown, the first ground portion 210 is provided with a plurality of grooves 220, and the plurality of grooves 220 are arranged in the arrangement direction of the plurality of feed-in portions 120.

[0096] In these alternative embodiments, the same first ground portion 210 is provided with a plurality of grooves 220, and when the induced current flows on the first ground 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] The relative positional relationship between the ground layer 200 and the feed-in portion 120 is provided in multiple ways, for example, as shown in FIG. 7, in some alternative embodiments, the ground layer 200 and the feed-in portion 120 are arranged in different layers. Figure 3 and Figure 4 As shown in FIG. 7, in some alternative embodiments, the ground layer 200 and the feed-in portion 120 are arranged in different layers.

[0098] In these alternative embodiments, the ground layer 200 and the feed-in portion 120 are located in different film layers and are formed in different process steps, so that the ground layer 200 and the feed-in portion 120 can be arranged in layers.

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

[0100] Alternatively, the orthographic projection of the feed-in portion 120 and the orthographic projection of at least part of the ground layer 200 at least partially overlap, so that part of the ground layer 200 and the feed-in portion 120 can overlap each other in the thickness direction Z of the display panel.

[0101] Optionally, at least part of the plurality of feed-in portions 120 are electrically connected to each other.

[0102] In some optional embodiments, as shown in Figure 3 and Figure 4 , the ground portion 203 further comprises a second ground portion 230, and the feed-in portion 120 is located within the second ground portion 230 in the projection of the substrate.

[0103] When the ground layer 200 and the feed-in portion 120 are arranged in different layers, the ground layer 200 can be provided with a second ground portion 230 overlapping the feed-in portion 120, and the ground layer 200 and the feed-in portion 120 are arranged in mutual overlap through the second ground portion 230.

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

[0105] In some other optional embodiments, as shown in Figure 11 and Figure 12 , the ground layer 200 and the feed-in portion 120 can be arranged in the same layer, so that the first ground portion 210 of the ground layer 200 and the feed-in portion 120 can be formed in the same process step, thereby simplifying the manufacturing process of the antenna assembly 10.

[0106] When the ground layer 200 and the feed-in portion 120 are arranged in the same layer, optionally, the plurality of feed-in portions 120 are arranged at intervals, and the first ground portion 210 is located in the accommodation gap 130 between adjacent feed-in portions 120.

[0107] In these optional embodiments, when the ground layer 200 and the feed-in portion 120 are arranged in the same layer, the first ground portion 210 can be located in the accommodation gap 130 between the two adjacent feed-in portions 120.

[0108] Optionally, as shown in Figure 11 and Figure 13 , the ground layer 200 further comprises a connecting portion 250 connected between adjacent first ground portions 210, so that the plurality of first ground portions 210 have the same electric potential.

[0109] Optionally, the connecting portion 250 and the feed-in portion 120 are connected through a via hole in the same layer or different layers.

[0110] In some optional embodiments, as shown in Figures 3 to 13 , the ground layer 200 further comprises a third ground portion 240 located on at least one side of the arrangement direction of the plurality of feed-in portions 120.

[0111] In these optional embodiments, the ground layer 200 further comprises a third ground portion 240, which 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 broaden the bandwidth of the antenna assembly 10.

[0112] Optionally, the third ground portion 240 is connected with the second ground portion 230 and made of the same material, so as to simplify the arrangement mode of the ground portion 203.

[0113] Optionally, the number of the third ground portion 240 is two, which are 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 located between the two third ground portions 240.

[0114] In these optional embodiments, the number of the third ground portion 240 is two, which are separately arranged on opposite sides of the plurality of feeding portions 120, which can further increase the distribution area of the ground layer 200, further improve the anti-electromagnetic interference capability of the antenna assembly 10, and broaden the bandwidth of the antenna assembly 10.

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

[0116] In these optional embodiments, the antenna assembly 10 comprises the 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 portions 120 of the plurality of antenna units 100 are arranged at intervals and insulated from each other, or the feeding portions 120 of at least two antenna units 100 are electrically connected with each other.

[0118] In these optional embodiments, the feeding portions 120 of the plurality of antenna units 100 are arranged at intervals and insulated from each other, so that each feeding portion 120 and each radiation portion 110 are electrically connected with each other and can be used to transmit different wireless signals. The feeding portions 120 of at least two antenna units 100 are electrically connected with each other, so that the two antenna units 100 can be electrically connected as one antenna group for transmitting and receiving wireless signals of different frequencies.

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

[0120] Optionally, the number of the feeding part 120 in at least one antenna unit 100 is different from the number of the feeding part 120 in other antenna units 100. In this way, different antenna units 100 can be used to receive and transmit signals of different frequency bands.

[0121] Optionally, at least one antenna unit 100 includes one radiation part 110 and multiple feeding parts 120. The multiple feeding parts 120 can transmit antenna signals to the same radiation part 110.

[0122] Optionally, the distance between adjacent feeding parts 120 in the same antenna unit 100 along the first direction X is less than the minimum distance between the feeding parts 120 of two adjacent antenna units 100. In this way, the problem of signal interference between different antenna units 100 can be improved.

[0123] Optionally, the width of the radiation part 110 of at least two antenna units 100 along the first direction X is different. In this way, different antenna units 100 can be used to receive and transmit signals of different frequency bands.

[0124] Optionally, the width of the radiation part 110 is positively correlated with the number of the feeding parts 120 of the antenna unit 100. In this way, the radiation part 110 and the feeding part 120 of each antenna unit 100 can be adapted to each other.

[0125] As shown in Figures 2 to 13 The first aspect of the present application also provides an antenna assembly 10, including: at least one antenna unit 100, the antenna unit 100 including a radiation part 110 and at least one feeding part 120 electrically connected to a first side of the radiation part 110; a ground layer 200, at least partially located on the first side of the radiation part 110 and insulated from the feeding part 120, the ground layer 200 including at least one first ground part 210, the first ground part 210 being projected on a first reference surface between two adjacent feeding parts 120; wherein the extension length of the first ground part 210 towards the edge of the radiation part 110 is greater than the extension length of the first ground part 210 away from the edge of the radiation part 110.

[0126] Optionally, the first reference surface is a reference surface, and the first reference surface and the thickness direction Z of the antenna assembly 10 can 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 can be the thickness direction Z of the antenna assembly 10.

[0127] In this embodiment, the antenna assembly 10 includes an antenna element 100 and a ground layer 200. The antenna element 100 includes a radiating portion 110 and a feeding portion 120. The radiating portion 110 radiates antenna signals, and the feeding portion 120 transmits induced current to the radiating portion 110. A first ground portion 210 is provided between two adjacent feeding portions 120, and the extension length towards the edge of the radiating portion 110 is greater than the extension length away from the edge of the radiating portion 110. This significantly increases the path of induced current flow between the feeding portion 120 and the first ground portion 210, thereby reducing the induced current flow intensity between two adjacent first ground portions 210, improving the isolation between different antenna elements 100, and thus improving the radiation performance of the antenna element 100. Therefore, by providing a groove 220 with an opening facing the radiating portion 110 on the first ground portion 210, the performance of the antenna assembly 10 can be effectively improved in this embodiment.

[0128] The antenna assembly 10 of this application embodiment and the antenna assembly 10 of any of the above embodiments can be cross-referenced.

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

[0130] In this embodiment, the antenna assembly 10 includes an antenna element 100 and a ground layer 200. The antenna element 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. The feeding portion 120 has a corresponding ground portion 203. An induced current can be generated between the feeding portion 120 and the ground portion 203. The width of the ground portion 203 on the side closer to the radiating portion 110 is smaller than the width of the ground portion 203 on the side farther from the radiating portion 110. The width of the ground portion 203 varies at different positions, and its shape changes gradually without abrupt changes in the extension direction of the feeding portion 120. This can broaden the bandwidth of the antenna assembly 10 and decouple it, thereby effectively improving the performance of the antenna assembly 10.

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

[0132] The two adjacent grounding portions 203 can enclose a groove 220. So that the path of the induced current flowing between the feeding portion 120 and the grounding portion 203 is significantly increased, the intensity of the induced current flowing between the two adjacent feeding portions 120 corresponding to the two adjacent feeding portions 120 can be reduced, the isolation between different antenna units 100 can be improved, and the radiation performance of the antenna unit 100 can be improved.

[0133] Optionally, the grounding portion 203 of the embodiment of the present application can include a part 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 wall portions 211 of the two adjacent first grounding portions 210 and a second grounding portion 230 located between the two adjacent first grounding portions 210. That is, the grounding portion 203 includes the wall portion 211 facing away from the corresponding feeding portion 120, and at least a part of the wall portions 211 of the two adjacent grounding portions 203 are arranged in a spaced manner.

[0134] Optionally, the wall portion 211 can be arranged in any of the above embodiments, for example, as shown in Figure 5 , one end of the wall portion 211 of the two adjacent grounding portions 203 is arranged in a spaced manner, and the other end is connected to each other to enclose the groove 220; or, as shown in Figure 6 , one end of the wall portion 211 of the two adjacent grounding portions 203 is arranged in a spaced manner, and the other end is connected to each other through the bottom portion 212 to enclose the groove 220. That is, the two adjacent grounding portions 203 include two sides close to each other, one end of the two sides is arranged in a spaced manner, and the other end is connected to each other to enclose the groove 220; or, one end of the two sides of the two adjacent grounding portions 203 is arranged in a spaced manner, and the other end is connected to each other through the bottom portion 212 to enclose the groove 220.

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

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

[0137] Optionally, in the direction away from the radiation portion 110, the width of the grounding portion 203 gradually increases. So that the grounding portion 203 can better expand the bandwidth of the antenna assembly 10.

[0138] As Figure 2 shown in FIG. 2, the second aspect of the present application also provides a mobile terminal comprising the antenna assembly 10 of any of the first aspect embodiments. Since the mobile terminal provided by the second aspect of the present application comprises the antenna assembly 10 of any of the first aspect embodiments, the mobile terminal provided by the second aspect of the present application has the beneficial effects of the antenna assembly 10 of any of the first aspect embodiments, which will not be repeated here.

[0139] The mobile terminal in the embodiments of the present application includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a desktop computer, a vehicle control system, a vehicle entertainment display system, a vehicle, a watch, a bracelet, a television, an indoor or outdoor display device, and the like, which are devices having a wireless signal transceiving function.

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

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

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

[0143] In these optional embodiments, the radiation part 110 is located on the display side, which facilitates the radiation part 110 to transmit wireless signals to the outside or receive wireless signals from the outside. The ground layer 200 is located on the non-display side, which can 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 improve the screen-to-body ratio.

[0144] In some optional embodiments, the mobile terminal further comprises a metal mesh line layer 11, and the radiation part 110 is located in the same layer as the metal mesh line layer 11 and is spaced apart from the metal mesh line layer 11.

[0145] In these optional embodiments, the radiation part 110 can be located in the metal mesh line layer 11, and the radiation part 110 is spaced apart from the metal mesh line layer 11, and a plurality of breakpoints are provided in the metal mesh line layer 11 to form the radiation part 110.

[0146] In some optional embodiments, the metal mesh line layer 11 comprises a metal trace 111, and the metal trace 111 is provided between two adjacent radiation parts 110, or the metal trace 111 is not provided between two adjacent radiation parts 110.

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

[0148] In some optional embodiments, the metal mesh line layer 11 includes the metal traces 111, the metal traces 111 are arranged between the two adjacent radiating portions 110, and the density of the metal traces 111 between the two adjacent radiating portions 110 is less than the density of the metal traces 111 in the radiating portion 110.

[0149] In these optional embodiments, the density of the metal traces 111 in the radiating portion 110 is high, which can improve the receiving and transmitting capability of the radiating portion 110 for wireless signals, and the density of the metal traces 111 between the two adjacent radiating portions 110 is small, which can improve the mutual influence between different radiating portions 110.

[0150] Optionally, the mobile terminal includes a flexible circuit board, the feeding portion 120 and the ground layer 200 can be arranged on the flexible circuit board, and the flexible circuit board is bent from the display side to the non-display side, so that the feeding portion 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 ratio of the mobile terminal.

[0151] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope thereof, and equivalent components can be substituted therefor. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. 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 by The antenna assembly comprises: 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 ground layer at least partially located on the first side of the radiating portion and spaced apart from the feeding portion, the ground layer comprising at least one first ground portion, a normal projection of the first ground portion on a first reference plane being located between two adjacent feeding portions; wherein the first ground portion is provided with at least one recess, an opening of the recess being located on a side close to the radiating portion, the first ground portion comprising a wall portion spaced apart along a first direction and a bottom portion connected between two adjacent wall portions, the wall portion and the bottom portion enclosing the recess, the wall portion having an arc-shaped edge, the arc-shaped edge being convexly arranged towards the recess, the wall portion having a first region and a second region distributed along a second direction, the first region being located on a side of the second region towards the radiating portion, the second region being located on a side of the first region away from the bottom portion, the arc-shaped edge being located on the first region; the ground layer and the feeding portion are arranged in different layers, the ground portion further comprising a second ground portion, a normal projection of the feeding portion along a thickness direction of the ground layer being located within a normal projection of the second ground portion along the thickness direction of the ground layer.

2. The antenna assembly of claim 1, wherein, The two adjacent feeding portions are spaced apart along the first direction.

3. The antenna assembly of claim 2, wherein, The first ground portion comprises a first side edge towards the radiating portion and a second side edge away from the radiating portion along a second direction, at least part of the first side edge being recessed towards the second side edge to form the recess, the second direction intersecting the first direction.

4. The antenna assembly of claim 2, wherein, The recess penetrates through the first ground portion in a direction perpendicular to the first reference plane.

5. The antenna assembly of claim 1, wherein, The linear distance between the opposite edges of the two wall portions is different at least in part at different positions along the second direction, wherein the linear distance is the minimum distance along the first direction.

6. The antenna assembly of claim 5, wherein, The region where the linear distance between the opposite edges of the two wall portions is different, the linear distance decreases along a direction away from the radiating portion.

7. The antenna assembly of claim 5, wherein, The linear distance gradually decreases along a direction away from the radiating portion.

8. The antenna assembly of claim 1, wherein, In a cross section parallel to the first direction, the opposite edges of the two wall portions are symmetrically arranged.

9. The antenna assembly of claim 1, wherein, The arc-shaped edge is located on at least one side of the wall portion close to the radiating portion.

10. The antenna assembly of claim 1, wherein, The wall portion has an arc-shaped edge and a straight edge, the arc-shaped edge and the straight edge being connected to each other.

11. The antenna assembly of claim 10, wherein, The straight edge is located on a side of the arc-shaped edge away from the radiating portion.

12. The antenna assembly according to claim 1, wherein: a surface of the bottom portion towards the recess is flatly arranged; alternatively, the bottom portion has at least one second protrusion, the second protrusion being convexly arranged towards the radiating portion; alternatively, the bottom portion is provided with a plurality of second protrusions arranged along the first direction towards the radiating portion, the second protrusions being convexly arranged along a direction towards the opening of the recess.

13. The antenna assembly of claim 12, wherein, A width of the bottom portion along the second direction is arranged to be constant or variable.

14. The antenna assembly of claim 12, wherein, The bottom is protruded towards the radiation part, and the bottom has a middle part in the first direction, and the width of the bottom in the first direction is at least partially increased in a direction away from the radiation part.

15. The antenna assembly of claim 12, wherein, The bottom has a first sub-edge and a second sub-edge connected with each other, the groove includes a first sub-groove and a second sub-groove, and one of the two wall parts connected with the bottom and the first sub-edge enclose the first sub-groove, and the other wall part and the second sub-edge enclose the second sub-groove.

16. The antenna assembly of claim 15, wherein, The vertex where the first sub-edge and the second sub-edge intersect is arranged at a distance not more than the line connecting the top edges of the two wall parts of the first ground part in the second direction.

17. The antenna assembly of claim 1, wherein, The number of the groove on the first ground part is one, and the width of the groove is at least partially different in the second direction; and / or, the width of the groove is the same.

18. The antenna assembly of claim 17, wherein, In a direction away from the radiation part, the width of the groove in a partial area gradually decreases, and the width of the groove in another partial area is the same. The width of the groove is the width between the inner walls of the groove in the first direction.

19. The antenna assembly of claim 1, wherein, The number of the groove on the same first ground part is multiple, and the shape and / or size of at least one of the multiple grooves is different from those of the other grooves.

20. The antenna assembly of claim 19, wherein, In the second direction, the width of at least one of the grooves is different in at least a partial area. The width of the groove is the width in the first direction.

21. The antenna assembly of claim 1, wherein, The first ground part is provided with multiple grooves, and the multiple grooves are arranged at a distance in the arrangement direction of the multiple feed-in parts.

22. The antenna assembly of claim 1, wherein, At least a part of the multiple feed-in parts are electrically connected with each other.

23. The antenna assembly of claim 1, wherein, The first ground part and the second ground part are connected and made of the same material.

24. The antenna assembly of claim 1, wherein, The ground layer further includes a third ground part, and the third ground part is located on at least one side of the arrangement direction of the multiple feed-in parts.

25. The antenna assembly of claim 24, wherein, The number of the third ground part is two, and the two third ground parts are located on both sides of the arrangement direction of the multiple feed-in parts, and the feed-in parts of the multiple antenna units are located between the two third ground parts.

26. The antenna assembly of claim 24, wherein, The third ground part is connected with the second ground part and made of the same material.

27. The antenna assembly of claim 1, wherein, The multiple antenna units are arranged at a distance in the first direction, and the multiple feed-in parts are arranged at a distance in the first direction.

28. The antenna assembly of claim 27, wherein, The feed-in parts of the multiple antenna units are arranged at a distance and insulated from each other, or the feed-in parts of at least two antenna units are electrically connected with each other.

29. The antenna assembly of claim 27, wherein, The radiation part corresponds to the feed-in part one by one. Alternatively, the number of the feed-in parts in at least one antenna unit is different from that in other antenna units.

30. The antenna assembly of claim 27, wherein, At least one antenna unit includes one radiation part and multiple feed-in parts.

31. The antenna assembly of claim 30, wherein, The distance between adjacent feed-in parts in the same antenna unit in the first direction is less than the minimum distance between the feed-in parts of adjacent two antenna units.

32. The antenna assembly of claim 30, wherein, The width of the radiation part of at least two antenna units in the first direction is different.

33. The antenna assembly of claim 32, wherein, The width of the radiation part is positively correlated with the number of the feed-in parts of the antenna unit.

34. An antenna assembly comprising: The antenna assembly is arranged on a touch layer of a mobile terminal, the mobile terminal comprising a display side and a non-display side, the antenna assembly comprising: at least one antenna unit comprising at least one radiation part and at least one feeding part electrically connected to a first side of the radiation part, the radiation part being arranged on the display side; a ground layer at least partially arranged on the first side of the radiation part and insulated from the feeding part, the ground layer comprising at least one first ground part, a normal projection of the first ground part on a first reference plane being located between two adjacent feeding parts, the ground layer being arranged on the non-display side; wherein the first ground part is provided with at least one groove, an opening of the groove being located on a side close to the radiation part, the first ground part comprising wall parts arranged at intervals in a first direction and a bottom part connected between two adjacent wall parts; the bottom part having a first sub-edge and a second sub-edge intersectingly connected, the groove comprising a first sub-groove and a second sub-groove, one of the two wall parts connected by the bottom part and the first sub-edge enclosing the first sub-groove, and the other wall part and the second sub-edge enclosing the second sub-groove, a vertex of intersection of the first sub-edge and the second sub-edge not exceeding a line of top edges of the two wall parts arranged at intervals in the first ground part in a second direction.

35. A mobile terminal, characterized by The antenna assembly of any one of claims 1-34.

36. The mobile terminal of claim 35, wherein, The ground layer and the radiation part are arranged in a stacking manner along a thickness direction of the mobile terminal.

37. The mobile terminal of claim 36, wherein, The ground layer is arranged on the non-display side of the mobile terminal, and the radiation part is arranged on the display side of the mobile terminal.

38. The mobile terminal of claim 35, wherein, The mobile terminal further comprises a metal mesh line layer, the radiation part and the metal mesh line layer are arranged in the same layer and at intervals.

39. The mobile terminal of claim 38, wherein, The metal mesh line layer comprises metal traces, the metal traces are arranged between two adjacent radiation parts, or the metal traces are not arranged between two adjacent radiation parts.

40. The mobile terminal of claim 38, wherein, The metal mesh line layer comprises metal traces, the metal traces are arranged between two adjacent radiation parts, and a density of the metal traces between the two adjacent radiation parts is less than a density of metal traces in the radiation part.

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