Antenna assembly and wearable device

Abstract

The utility model provides an antenna assembly and wearable equipment. The antenna assembly comprises a radiator, a grounding layer and a mainboard. The radiator is provided with a feeding point; the grounding layer and the radiator are stacked and arranged at an interval, the grounding layer is provided with a hollow window and a grounding point, and the hollow window is used for exposing part of the radiator; the mainboard is arranged on the side, away from the grounding layer, of the radiator at intervals, the mainboard is provided with a feed source, a touch signal source, a ground electrode and a circuit processing structure, the feed source is used for generating a radio frequency signal, the touch signal source is used for generating a touch detection signal, the feed source and the touch signal source are both electrically connected to the feed point, and the circuit processing structure is used for processing the radio frequency signal and the touch detection signal. A grounding point of the grounding layer is electrically connected to the ground pole through the circuit processing structure, and the circuit processing structure opens the radio frequency signal and accesses the touch detection signal. The antenna assembly provided by the embodiment of the utility model can have a relatively good communication function and a touch detection function at the same time.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna assembly and a wearable device. Background Art

[0002] With the development of technology, wearable devices with communication functions such as headphones are becoming more and more popular and their functions are becoming more and more powerful. For example, wearable devices in the related art usually have communication functions and touch detection functions. However, it is difficult for wearable devices in the related art to have both good communication functions and good touch detection functions at the same time. Utility Model Content

[0003] In a first aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising:

[0004] A radiator, the radiator having a feeding point;

[0005] a grounding layer, the grounding layer and the radiator are stacked and spaced apart, the grounding layer has a hollow window and a grounding point, the hollow window is used to expose part of the radiator; and

[0006] A main board, wherein the main board is spaced apart on a side of the radiator away from the grounding layer, the main board comprises a feed source, a touch signal source, a ground electrode and a circuit processing structure, the feed source is used to generate a radio frequency signal, the touch signal source is used to generate a touch detection signal, the feed source and the touch signal source are both electrically connected to the feed point, the grounding point of the grounding layer is electrically connected to the ground electrode through the circuit processing structure, wherein the circuit processing structure is open to the radio frequency signal and is open to the touch detection signal.

[0007] In a second aspect, an embodiment of the present application provides a wearable device, wherein the wearable device includes the antenna assembly as described in the first aspect.

[0008] In summary, for the antenna assembly provided by the embodiment of the present application, the feed source is electrically connected to the feeding point of the radiator, and the circuit processing structure of the main board opens the RF signal generated by the feed source. Therefore, the grounding layer is equivalent to a floating conductive layer for the RF signal, and the grounding layer has little or no impact on the radiator's transceiver of electromagnetic wave signals, thus ensuring that the antenna assembly has good communication functions. The touch signal source is electrically connected to the radiator, and the grounding layer has a hollow window, and the hollow window exposes part of the radiator, so that the radiator can detect the user's touch operation through the hollow window, making the radiator have touch functions. Further, the remaining part of the radiator corresponding to outside the hollow window is shielded by the grounding layer. When the user's finger is placed corresponding to the remaining part of the radiator outside the hollow window, the touch signal of the touch operation will be transmitted to the ground pole of the main board via the grounding layer and the circuit processing structure, thereby reducing or even avoiding the risk of accidental touch by the user. It can be seen that the antenna assembly provided by the embodiment of the present application can balance good communication functions and touch detection functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 Schematic diagram of a wearable device provided by an embodiment of the present application;

[0011] Figure 2 Communication schematic diagram between a wearable device and an electronic device provided by an embodiment of the present application;

[0012] Figure 3 For Figure 1 Schematic perspective view of the antenna assembly of the wearable device shown in

[0013] Figure 4 For Figure 3 Top view of the antenna assembly shown in

[0014] Figure 5 For Figure 4 Schematic cross-sectional view of the antenna assembly shown in along line I-I;

[0015] Figure 6 For Figure 4 Schematic cross-sectional view of the antenna assembly shown in along line II-II;

[0016] Figure 7 ForFigure 3 The circuit block diagram of the antenna assembly shown in

[0017] Figure 8 For Figure 3 Partial structural schematic diagram of the main board in the antenna assembly shown in

[0018] Figure 9 The circuit block diagram of the circuit processing structure in the antenna assembly provided by an embodiment

[0019] Figure 10 For Figure 4 The dimensional schematic diagram of the hollow structure in the antenna assembly of

[0020] Figure 11 For Figure 3 The schematic diagram of the orthographic projection of the ground layer and the radiator of the antenna assembly shown in

[0021] Figure 12 The circuit block diagram of the antenna assembly provided by another embodiment of the present application

[0022] Figure 13 For Figure 6 The schematic diagram of the distance between the radiator and the ground layer provided in

[0023] Figure 14 The three-dimensional schematic diagram of the wearable device provided by another embodiment of the present application

[0024] Figure 15 For Figure 14 The cross-sectional structural schematic diagram of the partial structure along the line III-III in Specific embodiments

[0025] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without creative efforts fall within the protection scope of the present application.

[0026] Referring to "embodiment" in the present application means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0027] In the description, claims, and the above-mentioned drawings of this application, terms such as "first" and "second" are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a component or device comprising one or more components is not limited to the one or more components listed, but optionally further includes one or more components not listed but inherent in the exemplified product, or one or more components that it should have based on the described function.

[0028] Before introducing the antenna assembly and wearable device provided by the embodiments of this application, the antenna assembly and wearable device provided by the related art are introduced. In the antenna assembly of the related art, the antenna assembly includes a radiator, the radiator can support a target frequency band, and the radiator can receive a touch operation of a user (also referred to as a touch operation). In other words, the radiator of the antenna assembly in the related art can achieve the sharing of the antenna and touch. The antenna efficiency of the radiator when it supports the target frequency band is related to the area size of the radiator. Generally speaking, the larger the area of the radiator, the higher the antenna efficiency. In the antenna assembly of the related art, in order to improve the antenna efficiency, the area of the radiator is usually designed to be large. When the area of the radiator is large, the antenna efficiency of the antenna assembly when supporting the target frequency band is good; however, when the user uses the wearable device to which the antenna assembly is applied, the risk of accidental touch during the user's touch operation will increase. When the area of the radiator is small, the risk of accidental touch during the user's operation can be reduced; however, the antenna performance of the antenna assembly when supporting the target frequency band is low, that is, the antenna performance of the antenna assembly will be lost. Thus, it can be seen that it is difficult for the antenna assembly of the wearable device in the related art to simultaneously have good communication functions and good touch detection functions.

[0029] Please refer to Figure 1 , Figure 1 It is a schematic diagram of a wearable device provided by an embodiment of this application. The wearable device 1 provided by the embodiment of this application can be, but is not limited to, headphones, bracelets, glasses, etc. In the schematic diagram of this embodiment, the wearable device 1 is taken as an example of headphones for illustration. It can be understood that it should not be construed as a limitation on the wearable device 1 provided by the embodiment of this application.

[0030] Please refer to Figure 2 , Figure 2Schematic diagram of communication between a wearable device and an electronic device provided by an embodiment of the present application. The wearable device 1 includes an antenna assembly 10 to implement the communication function between the wearable device 1 and the electronic device 3. The antenna assembly 10 can operate in a preset frequency band. For example, the preset frequency band can be but is not limited to the Bluetooth frequency band. The wearable device 1 can communicate with the electronic device 3. The electronic device 3 can be but is not limited to a mobile phone, a tablet computer, etc. In the schematic diagram of this embodiment, the electronic device 3 is taken as an example of a mobile phone for illustration. It can be understood that it should not be construed as a limitation on the electronic device 3 provided by the embodiment of the present application.

[0031] Further, the antenna assembly 10 provided by the embodiment of the present application also has a touch function. Next, the antenna assembly 10 provided by the embodiment of the present application will be described in detail.

[0032] Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , Figure 3 are Figure 1 the three-dimensional structure schematic diagram of the antenna assembly of the wearable device shown in Figure 4 is Figure 3 the top view of the antenna assembly shown in Figure 5 is Figure 4 the cross-sectional schematic diagram of the antenna assembly along the I-I line shown in Figure 6 is Figure 4 the cross-sectional schematic diagram of the antenna assembly along the II-II line shown in Figure 7 is Figure 3 the circuit block diagram of the antenna assembly shown in. Among them, in order to conveniently illustrate the structure of the antenna assembly 10, Figure 3Figures (a) and (b) are schematic perspective views of the antenna assembly 10 of the wearable device 1 from different perspectives. The antenna assembly 10 includes a radiator 120, a ground layer 110, and a main board 130. The radiator 120 has a feeding point P. The ground layer 110 is stacked and spaced apart from the radiator 120. The ground layer 110 has a hollow window 110a and a grounding point 110b, and the hollow window 110a is used to expose a part of the radiator 120. The main board 130 is spaced apart from the side of the radiator 120 facing away from the ground layer 110. The main board 130 has a feed source S1, a touch signal source S2, a ground electrode 131, and a circuit processing structure 132. The feed source S1 is used to generate a radio frequency signal, and the touch signal source S2 is used to generate a touch detection signal. Both the feed source S1 and the touch signal source S2 are electrically connected to the feeding point P, and the grounding point 110b of the ground layer 110 is electrically connected to the ground electrode 131 through the circuit processing structure 132. Among them, the circuit processing structure 132 opens the radio frequency signal and conducts the touch detection signal.

[0033] The radiator 120 can be, but is not limited to, a Laser Direct Structuring (LDS) radiator, or a Flexible Printed Circuit (FPC) radiator, or a Print Direct Structuring (PDS) radiator. It should be noted that Laser Direct Structuring is also called laser engraving. In the schematic diagram of this embodiment, the radiator 120 is taken as a plane for illustration. It can be understood that in other embodiments, the radiator 120 can also be a curved surface.

[0034] The radiator 120 can be, but is not limited to, a monopole radiator. Correspondingly, the antenna assembly 10 can be, but is not limited to, a monopole antenna. Or, the radiator 120 can be, but is not limited to, L-shaped.

[0035] The ground layer 110 can be, but is not limited to, a conductive flexible metal layer, or an LDS metal layer formed by laser forming, or a metal layer formed by printing. In the schematic diagram of this embodiment, the ground layer 110 is located above and the radiator 120 is located below. It can be understood that as the placement posture of the antenna assembly 10 changes, the positions of the ground layer 110 and the radiator 120 will also change. In the schematic diagram of this embodiment, the ground layer 110 is taken as a plane for illustration. It can be understood that in other embodiments, the ground layer 110 can also be a curved surface.

[0036] The hollow window 110a in the grounding layer 110 is used to expose part of the radiator 120. For example, when the user's finger is set corresponding to the hollow window 110a, the radiator 120 can detect the user's touch operation. In the schematic diagram of this embodiment, the shape of the hollow window 110a is taken as a rectangle for illustration. It can be understood that in other embodiments, the shape of the hollow window 110a can also be a square, or a circle or an ellipse, etc. The embodiment of the present application does not limit the shape of the hollow window 110a, as long as it can expose part of the radiator 120.

[0037] The main board 130 can be, but is not limited to, a printed circuit board or a flexible circuit board. The main board 130 is disposed on a side of the radiator 120 away from the grounding layer 110, and the main board 130 is spaced apart from the radiator 120.

[0038] The feed source S1 is used to generate a radio frequency signal. The feed source S1 is electrically connected to the feeding point P of the radiator 120 so that the radiator 120 supports a target frequency band. The manner in which the feed source S1 is electrically connected to the feeding point P of the radiator 120 can be, but is not limited to, being connected to the feeding point P by a conductive elastic sheet (such as a metal elastic sheet), or a thimble, or soldering, etc.

[0039] The touch signal source S2 is used to generate a touch detection signal. The touch signal source S2 is electrically connected to the feeding point P to detect whether the radiator 120 receives the user's touch operation. The manner in which the touch signal source S2 is electrically connected to the feeding point P of the radiator 120 can be, but is not limited to, being connected to the feeding point P by a conductive elastic sheet (such as a metal elastic sheet), or a thimble, or soldering, etc.

[0040] It can be seen that for the antenna assembly 10 provided by the embodiment of the present application, both the feed source S1 and the touch signal source S2 are electrically connected to the feeding point P of the radiator 120. Therefore, the radiator 120 has the functions of an antenna and touch detection.

[0041] The grounding point 110b of the grounding layer 110 is electrically connected to the ground electrode 131 through the circuit processing structure 132 of the main board 130. For example, the grounding point 110b of the grounding layer 110 can be electrically connected to the circuit processing structure 132 through a conductive connecting member (such as a pad or an elastic sheet, etc.), and the circuit processing structure 132 is electrically connected to the ground electrode 131.

[0042] The circuit processing structure 132 opens the RF signal. Therefore, the ground layer 110 is equivalent to a floating conductive layer (such as metal) for the RF signal. The ground layer 110 has little or no impact on the radiation body 120 receiving and transmitting electromagnetic wave signals in the target frequency band, thereby ensuring that the antenna assembly 10 has good communication functions in the target frequency band.

[0043] The circuit processing structure 132 is connected to the detection signal path. Therefore, when the user operates on a part of the ground layer 110 other than the hollow window 110a, the ground layer 110 can transmit the touch signal of the touch operation to the ground electrode 131 of the main board 130, thereby effectively shielding the touch signal of the part of the ground layer 110 that the user touches other than the hollow window 110a. In addition, since the ground layer 110 has a hollow window 110a, when the user's finger is set corresponding to the hollow window 110a, the radiation body 120 can detect the user's touch operation. Thus, it can be seen that the part of the radiation body 120 of the antenna assembly 10 provided by the embodiment of the present application corresponding to the hollow window 110a of the ground layer 110 can detect the user's touch operation. Further, when the user's finger is placed corresponding to the remaining part of the radiation body 120 other than the hollow window 110a, the touch signal of the touch operation will be transmitted to the ground electrode 131 of the main board 130 via the ground layer 110 and the circuit processing structure 132, thereby reducing or even avoiding the risk of accidental touch by the user. Thus, it can be seen that the radiation body 120 of the antenna assembly 10 provided by the embodiment of the present application can be designed to be larger, which can meet the requirement of increasing the area of the radiation body 120; and it is not easy to be accidentally touched.

[0044] In summary, for the antenna assembly 10 provided by the embodiment of the present application, the feed source S1 is electrically connected to the feeding point P of the radiator 120, and the circuit processing structure 132 of the main board 130 opens the radio frequency signal generated by the feed source S1. Therefore, the ground layer 110 is equivalent to a floating conductive layer for the radio frequency signal, and the ground layer 110 has little or no impact on the radiator 120 for receiving and transmitting electromagnetic wave signals, thereby ensuring that the antenna assembly 10 has good communication functions. The touch signal source S2 is electrically connected to the radiator 120. The ground layer 110 has a hollow window 110a, and the hollow window 110a exposes a part of the radiator 120, so that the radiator 120 can detect the touch operation of the user through the hollow window 110a, making the radiator 120 have touch functions. Further, the remaining part of the radiator 120 corresponding to the outside of the hollow window 110a is shielded by the ground layer 110. When the user's finger is placed corresponding to the remaining part of the radiator 120 outside the hollow window 110a, the touch signal of the touch operation will be transmitted to the ground electrode 131 of the main board 130 via the ground layer 110 and the circuit processing structure 132, thereby reducing or even avoiding the risk of accidental touch by the user. It can be seen that the antenna assembly 10 provided by the embodiment of the present application can take into account good communication functions and touch detection functions.

[0045] Please refer to Figure 8 , Figure 8 as Figure 3 a partial structural schematic diagram of the main board in the antenna assembly shown. The main board 130 has a clearance area 130a around the circuit processing structure 132. Among them, the distance d1 from the edge of the clearance area 130a to the edge of the circuit processing structure 132 satisfies: 0.5 mm ≤ d1 ≤ 1.0 mm.

[0046] The distance d1 from the edge of the clearance area 130a to the edge of the circuit processing structure 132 can be, but is not limited to, 0.5 mm, or 0.6 mm, or 0.7 mm, or 0.8 mm, or 0.9 mm, or 1.0 mm.

[0047] When the distance d1 from the edge of the clearance area 130a to the edge of the circuit processing structure 132 is too small, other conductive components (such as electronic devices or conductive traces, etc.) in the main board 130 are relatively close to the circuit processing structure 132, so that the conductive components are coupled to the circuit processing structure 132, and the circuit processing structure 132 cannot open the radio frequency signal, thereby affecting the antenna performance of the antenna assembly 10. When the distance d1 from the edge of the clearance area 130a to the edge of the circuit processing structure 132 is too large, the size of the main board 130 will be too large, which is not conducive to the miniaturization of the antenna assembly 10.

[0048] In summary, for the antenna assembly 10 provided by the embodiment of the present application, the main board 130 of the antenna assembly 10 has a clearance area 130a around the circuit processing structure 132. Wherein, the distance d1 from the edge of the clearance area 130a to the edge of the circuit processing structure 132 satisfies: 0.5 mm ≤ d1 ≤ 1.0 mm. On the one hand, it can open the circuit for the radio frequency signal by the antenna path processing structure, so that the antenna assembly 10 has better antenna performance. On the other hand, it is also beneficial to the miniaturization of the antenna assembly 10.

[0049] Further, please refer to Figure 9 , Figure 9 is the circuit block diagram of the circuit processing structure in the antenna assembly provided by an embodiment. In this embodiment, the circuit processing structure 132 includes an inductance filter 1321. The inductance filter 1321 opens the circuit for the radio frequency signal and forms a path for the touch detection signal.

[0050] In this embodiment, the circuit processing structure 132 includes an inductance filter 1321. The inductance filter 1321 opens the circuit for the radio frequency signal. Therefore, the ground layer 110 is equivalent to a floating conductive layer (such as metal) for the radio frequency signal. The ground layer 110 has little or no influence on the radiation body 120 receiving and transmitting electromagnetic wave signals in the target frequency band, thus ensuring that the antenna assembly 10 has better communication functions in the target frequency band.

[0051] In addition, the circuit processing structure 132 forms a path for the touch detection signal. Therefore, when the user operates on a part of the ground layer 110 other than the hollow window 110a, the ground layer 110 can transmit the touch signal of the touch operation to the ground electrode 131 of the main board 130, so as to effectively shield the touch signal of the part where the user touches the ground layer 110 other than the hollow window 110a, thereby reducing or even avoiding the risk of accidental touch by the user. It can be seen that the antenna assembly 10 provided by the embodiment of the present application can take into account both communication functions and touch detection functions.

[0052] For the antenna assembly 10 provided by the embodiment of the present application, the circuit processing structure 132 includes an inductance filter 1321, and the structure is simple and easy to implement.

[0053] Please refer to Figure 10 , Figure 10 For Figure 4 is the size schematic diagram of the hollow structure in the antenna assembly. In this embodiment, the length L of the hollow window 110a satisfies: 5 mm ≤ L ≤ 15 mm, and the width W of the hollow window 110a satisfies: 1 mm ≤ W ≤ 4 mm.

[0054] The length L of the hollow window 110a can be, but is not limited to, 5 mm, or 6 mm, or 7 mm, or 8 mm, or 9 mm, or 10 mm, or 11 mm, or 12 mm, or 13 mm, or 14 mm, or 15 mm.

[0055] The width W of the hollow window 110a can be, but is not limited to, 1 mm, or 2 mm, or 3 mm, or 4 mm, or 5 mm.

[0056] When the hollow window 110a is rectangular, the length of the hollow window 110a is the dimension of the long side of the rectangle, and the width of the hollow window 110a is the dimension of the short side of the rectangle. When the hollow window 110a is in the shape of an ellipse or the like, the length of the hollow window 110a is the dimension between the two farthest points in the hollow window 110a. The two farthest points in the hollow window 110a are arranged along the first direction, and the maximum distance between the two points in the second direction of the hollow window 110a is the width of the hollow window 110a, where the second direction is perpendicular to the first direction.

[0057] When the size of the hollow window 110a is too large, the risk of accidental touch during user touch operations will increase; when the size of the hollow window 110a is small, it is not easy for the user to align with the hollow window 110a during touch operations. The length L of the hollow window 110a satisfies: 5 mm ≤ L ≤ 15 mm, and the width W of the hollow window 110a satisfies: 1 mm ≤ W ≤ 4 mm. On the one hand, it can reduce the risk of accidental touch during user touch operations, and on the other hand, it also makes it easy for the user to align with the hollow window 110a during touch operations.

[0058] Please refer to Figure 3 and Figure 11 , Figure 11 is Figure 3 a schematic diagram of the orthographic projection of the ground layer and the radiator of the antenna assembly shown in on the main board. The orthographic projection of the ground layer 110 on the main board 130 is the first projection 110c, and the first projection 110c has an outer contour line facing away from the hollow window 110a; the orthographic projection of the radiator 120 on the main board 130 is the second projection 120a, where the second projection 120a falls within the area enclosed by the outer contour line of the first projection 110c.

[0059] In this embodiment, the second projection 120a falling within the area enclosed by the outer contour line of the first projection 110c can enable the ground layer 110 to block more of the other parts of the radiator 120 except for the part corresponding to the hollow window 110a, and can further reduce the risk of accidental touch during user touch operations.

[0060] Further, in an embodiment, the second projection 120a also has an outer contour line, and at least a part of the outer contour line of the second projection 120a overlaps with the outer contour line of the first projection 110c. In this way, on the one hand, the risk of accidental touch during user touch operation can be reduced; on the other hand, the size of the antenna assembly 10 can be relatively small, which is beneficial to the miniaturization of the antenna assembly 10.

[0061] The area enclosed by the outer contour line of the first projection 110c is the first area, and the area enclosed by the outer contour line of the second projection 120a is the second area. In an embodiment, the first area is equal to the second area. When the outer contour lines of the first projection 110c and the second projection 120a have the same shape and the first area is equal to the second area, it is convenient for the preparation of the radiator 120 and the ground layer 110. It can be understood that in other embodiments, the first area is different from the second area.

[0062] Please refer to Figure 12 , Figure 12 which is the circuit block diagram of the antenna assembly provided in another embodiment of the present application. In this embodiment, the main board 130 further has a first filter circuit 133 and a second filter circuit 134. The feed source S1 is electrically connected to the first filter circuit 133 to the feeding point P, and the first filter circuit 133 is used to pass the radio frequency signal and filter out the touch detection signal. The touch signal source S2 is electrically connected to the second filter circuit 134 to the feeding point P, and the second filter circuit 134 is used to pass the touch detection signal and filter out the radio frequency signal.

[0063] The main board 130 further has a first filter circuit 133 and a second filter circuit 134. The first filter circuit 133 is used to pass the radio frequency signal and filter out the touch detection signal, and the second filter circuit 134 is used to pass the touch detection signal and filter out the radio frequency signal. Thus, it can be seen that the antenna assembly 10 uses the first filter circuit 133 and the second filter circuit 134 to isolate the radio frequency signal and the touch detection signal, thereby reducing the interference between the radio frequency signal and the touch detection signal.

[0064] Please refer to Figure 13 , Figure 13 which is Figure 6 the schematic diagram of the distance between the radiator and the ground layer provided in

[0065] Specifically, in one embodiment, the distance d2 between the radiator 120 and the ground layer 110 can be, but is not limited to, 0.025 mm, or 0.030 mm, or 0.035 mm, or 0.040 mm, or 0.045 mm, or 0.050 mm.

[0066] The distance d2 between the radiator 120 and the ground layer 110 satisfies: 0.025 mm ≤ d2 ≤ 0.050 mm, which can make the distance between the radiator 120 and the ground layer 110 smaller, and make the thickness of the antenna assembly 10 thinner.

[0067] An embodiment of the present application also provides a wearable device 1. Please refer to Figure 1 , the wearable device 1 includes the antenna assembly 10 described in any one of the above. The antenna assembly 10 can be referred to the previous description and will not be elaborated here.

[0068] For the antenna assembly 10 of the wearable device 1 provided by the embodiment of the present application, the feed source S1 is electrically connected to the feeding point P of the radiator 120, and the circuit processing structure 132 of the main board 130 opens the radio frequency signal generated by the feed source S1. Therefore, the ground layer 110 is equivalent to a floating conductive layer for the radio frequency signal, and the ground layer 110 has little or no influence on the radiator 120 for receiving and transmitting electromagnetic wave signals, thereby ensuring that the antenna assembly 10 has a good communication function. The touch signal source S2 is electrically connected to the radiator 120, and the ground layer 110 has a hollow window 110a, and the hollow window 110a exposes a part of the radiator 120, so that the radiator 120 can detect the touch operation of the user through the hollow window 110a, and the radiator 120 has a touch function. Further, the remaining part of the radiator 120 corresponding to the outside of the hollow window 110a is shielded by the ground layer 110. When the user's finger is placed corresponding to the remaining part of the radiator 120 corresponding to the outside of the hollow window 110a, the touch signal of the touch operation will be transmitted to the ground electrode 131 of the main board 130 via the ground layer 110 and the circuit processing structure 132, thereby reducing or even avoiding the risk of accidental touch by the user. It can be seen that the antenna assembly 10 of the wearable device 1 provided by the embodiment of the present application can take into account both the communication function and the touch detection function.

[0069] Further, please refer to Figure 1 , the wearable device 1 has a human-computer interaction hot zone 1a, and the hollow window 110a of the antenna assembly 10 is arranged corresponding to the human-computer interaction hot zone 1a.

[0070] The human-computer interaction hot zone 1a of the wearable electronic device 3 refers to the area that is relatively easy for the user to touch when the wearable electronic device 3 is in a worn state. When the wearable electronic device 3 is in a worn state and the user touches the human-computer interaction hot zone 1a, since the hollow window 110a of the ground layer 110 in the antenna assembly 10 is arranged corresponding to the human-computer interaction hot zone 1a, the radiator 120 of the antenna assembly 10 can sense the user's touch operation. When the wearable device 1 communicates with the electronic device 3, the radiator 120 senses the user's touch operation, and the touch detection signal changes. In an embodiment, the wearable device 1 includes a processor, and the processor is configured to control a target application in the electronic device 3 to perform a preset operation according to the change of the touch detection signal. It can be understood that different touch operations correspond to different operations of the wearable device 1 on the target application in the electronic device 3; or different touch operations correspond to operations of the wearable device 1 on different target effects of the electronic device 3. For example, when the user clicks on the human-computer interaction hot zone 1a of the wearable device 1, the radiator 120 senses the click action, the touch detection signal changes, and the processor controls the next song to be played on the wearable electronic device 3 according to the change of the touch detection signal. When the user double-clicks on the human-computer interaction hot zone 1a of the wearable device 1, the radiator 120 senses the double-click action, the touch detection signal changes, and the processor controls the currently playing song on the wearable electronic device 3 to be paused according to the change of the touch detection signal.

[0071] It can be understood that the above distance is only an application scenario of the wearable device 1 and should not be construed as a limitation on the wearable device 1 provided by the embodiments of the present application.

[0072] Further, please refer to Figure 1 , the wearable device 1 further includes a housing 30. The housing 30 includes a front housing 310 and an insulating rear housing 320. When the wearable device 1 is worn on the user's target part, the rear housing 320 faces away from the target part compared to the front housing 310. The rear housing 320 and the front housing 310 cooperate with each other to form a receiving space for receiving at least a part of the antenna assembly 10, and the rear housing 320 has the human-computer interaction hot zone 1a.

[0073] When the wearable device 1 is worn on the target part of the user, the rear shell 320 faces away from the target part compared to the front shell 310. In other words, when the wearable device 1 is in a worn state of being worn or placed on the target part of the user, the front shell 310 is closer to the target part compared to the rear shell 320. For example, when the wearable device 1 is an earphone and is worn in the user's ear canal, the front shell 310 is closer to the user's ear canal compared to the rear shell 320.

[0074] In Figure 1 In the wearable device 1 shown, the receiving space is used to receive all of the antenna assembly 10. In other words, all of the antenna assembly 10 is located within the receiving space. When all of the antenna assembly 10 is located within the receiving space, the front shell 310 and the rear shell 320 cooperate with each other to protect the antenna assembly 10. It can be understood that in other embodiments, the receiving space can be used to receive a part of the antenna assembly 10, which will be described in detail later in conjunction with the drawings.

[0075] In this embodiment, since the rear shell 320 faces away from the target part compared to the front shell 310, when the wearable device 1 is worn on the target part of the user, the rear shell 320 is exposed, and the rear shell 320 has the human-computer interaction hot zone 1a. Therefore, when the wearable device 1 is in a worn state, it is convenient for the user to perform a touch operation on the radiator 120 of the antenna assembly 10 through the human-computer interaction hot zone 1a.

[0076] Please refer to Figure 14 and Figure 15 , Figure 14 is a three-dimensional schematic diagram of a wearable device provided in another embodiment of the present application; Figure 15 is Figure 14 a cross-sectional structural schematic diagram of a partial structure along the line III-III in. The wearable device 1 further includes a housing 30. The housing 30 includes a front shell 310 and an insulating rear shell 320. When the wearable device 1 is worn on the target part of the user, the rear shell 320 faces away from the target part compared to the front shell 310. The rear shell 320 and the front shell 310 cooperate with each other to form a receiving space, and the rear shell 320 has the human-computer interaction hot zone 1a.

[0077] In this embodiment, the rear shell 320 has an inner surface 320a that defines the receiving space and an outer surface 320b that is disposed opposite to the inner surface 320a. The radiator 120 is disposed on the inner surface 320a, and the ground layer 110 is disposed on the outer surface 320b.

[0078] In this embodiment, the radiator 120 is disposed on the inner surface 320a, the ground layer 110 is disposed on the outer surface 320b, and the ground layer 110 and the radiator 120 are spaced apart by the rear case 320, thereby saving the accommodation space inside the wearable device 1.

[0079] In summary, the antenna assembly 10 of the wearable device 1 provided by an embodiment of the present application includes a radiator 120 and a ground layer 110. The ground layer 110 and the radiator 120 are stacked and spaced apart to form a double-layer structure, having a communication function and a touch detection function.

[0080] In addition, the radiator 120 of the antenna assembly 10 of the wearable device 1 provided by the embodiment of the present application can be made larger to meet the need to increase the radiator 120; and the hollow window 110a of the ground layer 110 exposes a part of the radiator 120 as a touch electrode, so that the touch electrode of the antenna assembly 10 is smaller and not easily mis-touched. In other words, the antenna assembly 10 of the wearable device 1 provided by the embodiment of the present application can achieve a win-win situation in terms of antenna performance and human-computer interaction performance when the wearable device 1 interacts with the electronic device 3 through touch.

[0081] The above are some embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises: A radiator, the radiator having a feeding point; a grounding layer, the grounding layer and the radiator are stacked and spaced apart, the grounding layer has a hollow window and a grounding point, the hollow window is used to expose part of the radiator; and A main board, wherein the main board is spaced apart on a side of the radiator away from the grounding layer, the main board comprises a feed source, a touch signal source, a ground electrode and a circuit processing structure, the feed source is used to generate a radio frequency signal, the touch signal source is used to generate a touch detection signal, the feed source and the touch signal source are both electrically connected to the feed point, the grounding point of the grounding layer is electrically connected to the ground electrode through the circuit processing structure, wherein the circuit processing structure is open to the radio frequency signal and is open to the touch detection signal.

2. The antenna assembly according to claim 1, wherein: The mainboard has a clearance area around the circuit processing structure, wherein a distance d1 from an edge of the clearance area to an edge of the circuit processing structure satisfies: 0.5 mm ≤ d1 ≤ 1.0 mm.

3. The antenna assembly according to claim 2, wherein: The circuit processing structure includes an inductor filter, which opens a circuit for the radio frequency signal and passes a circuit for the touch detection signal.

4. The antenna assembly according to claim 1, wherein: The length L of the hollow window satisfies: 5mm≤L≤15mm, and the width W of the hollow window satisfies: 1mm≤W≤4mm.

5. The antenna assembly according to claim 1, wherein: The orthographic projection of the ground layer on the mainboard is a first projection, and the first projection has an outer contour line that deviates from the hollow window; the orthographic projection of the radiator on the mainboard is a second projection, wherein the second projection falls within the area encircled by the outer contour line of the first projection.

6. The antenna assembly according to claim 1, wherein: The mainboard also has: a first filter circuit, the feed source electrically connecting the first filter circuit to the feed point, the first filter circuit being used to pass the radio frequency signal and filter out the touch detection signal; and A second filter circuit, the touch signal source is electrically connected to the second filter circuit to the feeding point, and the second filter circuit is used for passing the touch detection signal and filtering out the radio frequency signal.

7. A wearable device, characterized in that: The wearable device comprises the antenna assembly as described in any one of claims 1-6.

8. The wearable device according to claim 7, wherein: The wearable device has a human-computer interaction hot zone, and the hollow window of the antenna assembly is set corresponding to the human-computer interaction hot zone.

9. The wearable device according to claim 8, characterized in that: The wearable device further comprises a housing, wherein the housing comprises front shell; and An insulating rear shell, when the wearable device is worn on a target part of a user, the rear shell is away from the target part compared to the front shell, the rear shell and the front shell cooperate with each other to form a receiving space, the receiving space is used to receive at least part of the antenna assembly, and the rear shell has the human-computer interaction hot zone.

10. The wearable device according to claim 9, characterized in that: The antenna components are all accommodated in the accommodation space; Alternatively, the rear shell has an inner surface defining the accommodating space and an outer surface disposed opposite to the inner surface, the radiator is disposed on the inner surface, and the ground layer is disposed on the outer surface.

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