Electronic devices

Abstract

The present application provides an electronic device, including an antenna radiator, a metal decorative part, and a detection module, wherein a first detection circuit of the detection module is electrically connected to the antenna radiator and used together with the antenna radiator for human proximity detection; a second detection circuit of the detection module is electrically connected to the metal decorative part and used together with the metal decorative part for human proximity detection. Thus, the electronic device of the present application does not need to be additionally provided with a sensing element, and a miniaturized design can be achieved; at the same time, the metal decorative part has little effect on the radiation performance of the antenna radiator, and the antenna radiator can have better radiation performance.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices such as smartphones can realize more and more functions. While people enjoy the convenience brought by electronic devices, they are also paying more and more attention to the impact of electromagnetic radiation generated by electronic devices on human health. Generally, in the process of antenna design, the electromagnetic wave absorption ratio (Specific absorption rate, referred to as "SAR") is used to evaluate the impact of electromagnetic radiation generated by electronic devices on the human body. The larger the SAR value, the greater the impact on the human body.

[0003] In the related art, the detection of SAR value is often achieved through proximity detection. However, the solutions of the related art often need to occupy a large space of the electronic device, so that the electronic device cannot be miniaturized. Summary of the invention

[0004] The present application provides an electronic device, which can not only determine the SAR value of the electronic device, but also realize the miniaturized design of the electronic device.

[0005] The present application provides an electronic device, including:

[0006] Antenna radiator;

[0007] A metal decorative piece, spaced apart from the antenna radiator; and

[0008] The detection module includes a first detection circuit and a second detection circuit, wherein the first detection circuit is electrically connected to the antenna radiator, and the first detection circuit and the antenna radiator are used together for human body approach detection; the second detection circuit is electrically connected to the metal decorative part, and the second detection circuit and the metal decorative part are also used together for human body approach detection.

[0009] In the electronic device of the present application, the antenna radiator and the first detection circuit can jointly perform human body approach detection, and the metal decorative part and the second detection circuit can also jointly perform human body approach detection. Therefore, on the one hand, the antenna radiator and the metal decorative part can be reused as the sensing elements of the detection module, and the electronic device does not need to be additionally provided with sensing elements, which can not only save the production cost of the electronic device, but also realize the miniaturization design of the electronic device; on the other hand, the metal decorative part is spaced apart from the antenna radiator, and the metal decorative part has little effect on the radiation performance of the antenna radiator, so the antenna radiator can have better radiation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0011] Figure 1 This is a schematic diagram of the first structure of an electronic device according to an embodiment of the present application.

[0012] Figure 2 This is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

[0013] Figure 3 This is a third structural schematic diagram of the electronic device according to an embodiment of the present application.

[0014] Figure 4 for Figure 3 A schematic structural diagram of another aspect of the electronic device is shown.

[0015] Figure 5 for Figure 3 A schematic diagram of the structure of the electronic device shown in another direction.

[0016] Figure 6 for Figure 1 A schematic diagram of an electrical connection of the first detection circuit of the detection module.

[0017] Figure 7 for Figure 1 Another electrical connection diagram of the first detection circuit of the detection module.

[0018] Figure 8 for Figure 1 A schematic diagram of an electrical connection of the second detection circuit of the detection module. DETAILED DESCRIPTION

[0019] The following will be combined with the attached examples of the present application Figure 1 To Attachment Figure 8 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The embodiment of the present application provides an electronic device 10. The electronic device 10 may be a device such as a smart phone, a tablet computer, or a gaming device, an AR (Augmented Reality) device, an automotive device, a data storage device, an audio player, a video player, a laptop computer, a desktop computing device, etc.

[0022] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a first structure of an electronic device 10 according to an embodiment of the present application. Figure 2 1 is a schematic diagram of a second structure of an electronic device 10 according to an embodiment of the present application. The electronic device 10 according to an embodiment of the present application includes an antenna radiator 100, a metal decorative part 200 and a detection module 300.

[0023] The antenna radiator 100 can radiate wireless signals under the action of the excitation signal. Figure 1 and Figure 2 As shown, the electronic device 10 may further include a first feed source 101, which may be directly or indirectly electrically connected to the antenna radiator 100, and the first feed source 101 provides an excitation signal so that the antenna radiator 100 can support the transmission of wireless signals and realize wireless communication functions. For example, the antenna radiator 100 may support wireless fidelity (Wireless Fidelity, referred to as Wi-Fi) signals, Global Positioning System (Global Positioning System, referred to as GPS) signals, third-generation mobile communication technology (3rd-Generation, referred to as 3G), fourth-generation mobile communication technology (4th-Generation, referred to as 4G), fifth-generation mobile communication technology (5th-Generation, referred to as 5G), near field communication (Near field communication, referred to as NFC) signals, ultra-wideband communication (Ultra Wide Band, referred to as UWB) signals, etc.

[0024] The metal decorative part 200 can be spaced apart from the antenna radiator 100, and the two can be located in different areas of the electronic device 10. The metal decorative part 200 can decorate the components inside the electronic device 10 to prevent the user from observing the internal structure of the electronic device 10 from the outside of the electronic device 10; illustratively, the metal decorative part 200 can be, but not limited to, a decorative part of the camera module 400, a decorative part of the Home button, or a decorative part of the physical case of the electronic device 10. The metal decorative part 200 can also carry the components inside the electronic device 10 and support the components; illustratively, the electronic device 10 can also include a support, which can carry the components of the electronic device 10, and the support can include the metal decorative part 200; it can be understood that the metal decorative part 200 of the support type can also reinforce the components of the electronic device 10, and the metal decorative part 200 can be, but not limited to, a decorative part such as a reinforcing steel sheet of the components. It can be understood that the metal decorative part 200 can be, but not limited to, a material including aluminum alloy, magnesium alloy, copper alloy, etc.

[0025] The detection module 300 may be a module for performing proximity detection. The electronic device 10 may determine the current SAR value of the electronic device 10 based on the parameter changes detected by the detection module 300, and control the radio frequency transmission power of the electronic device 10 based on the SAR value, so as to perform an antenna power backoff operation to achieve a SAR reduction operation when the SAR value is large.

[0026] The detection module 300 may include a first detection circuit 310 and a second detection circuit 320. The first detection circuit 310 may be directly or indirectly electrically connected to the antenna radiator 100. The antenna radiator 100 may be used as a sensing element of the first detection circuit 310. The first detection circuit 310 and the antenna radiator 100 may be used together for human proximity detection. The second detection circuit 320 may be directly or indirectly electrically connected to the metal decorative part 200. The metal decorative part 200 may be used as a sensing element of the second detection circuit 320. The second detection circuit 320 and the antenna radiator 100 may also be used together for human proximity detection.

[0027] It can be understood that the detection module 300 of the embodiment of the present application can be but not limited to a capacitive sensor, and the first detection circuit 310 and the second detection circuit 320 can perform human proximity detection according to the change of the capacitance value of the antenna radiator 100 and the metal decorative part 200. When the human body approaches, the capacitance value of the antenna radiator 100 and the metal decorative part 200 will change greatly, and the electronic device 10 can perform a SAR reduction operation to reduce the SAR value. At this time, the over-the-air download technology test (Over The Air, referred to as OTA) of the antenna that recognizes that the human body is approaching will be reduced and meet the test requirements; on the contrary, when the human body is far away, the capacitance value of the antenna radiator 100 and the metal decorative part 200 remains basically unchanged, the electronic device 10 does not perform the SAR reduction operation, the OTA test will not be affected, and the antenna can be transmitted at the maximum power. Therefore, the solution of the embodiment of the present application can realize the execution of the SAR reduction operation when the human body approaches, and the non-execution of the SAR reduction operation when the human body is far away, and the balance between the SAR value and OTA can be achieved.

[0028] It is understandable that the detection module 300 of the embodiment of the present application can also be other detection devices. For example, when the antenna radiator 100 and the metal decorative part 200 are in the shape of a coil structure, the detection module 300 of the embodiment of the present application can also be, but not limited to, an inductive sensor or an electromagnetic induction sensor. The embodiment of the present application does not limit the specific structure of the detection module 300.

[0029] It is understandable that if Figure 1 As shown, the first detection circuit 310 and the second detection circuit 320 of the embodiment of the present application can be two independent circuits, and the electronic device 10 can set the two on two independent components, and the detection module 300 can include two independent components to carry the first detection circuit 310 and the second detection circuit 320 respectively. Of course, the first detection circuit 310 and the second detection circuit 320 of the embodiment of the present application can also be two sub-circuits set on the same component (detection module 300). For example, Figure 2 As shown, the detection module 300 may further include a control chip 330 , which may be directly or indirectly electrically connected to the first detection circuit 310 and the second detection circuit 320 , respectively, and the control chip 330 may control the first detection circuit 310 and the second detection circuit 320 .

[0030] In the electronic device 10 of the embodiment of the present application, the antenna radiator 100 and the first detection circuit 310 can jointly perform human body approach detection, and the metal decorative part 200 and the second detection circuit 320 can also jointly perform human body approach detection. Therefore, on the one hand, the antenna radiator 100 and the metal decorative part 200 can be reused as the sensing elements of the detection module 300, and the electronic device 10 does not need to be additionally provided with sensing elements, which can not only save the production cost of the electronic device 10, but also realize the miniaturization design of the electronic device 10; on the other hand, the metal decorative part 200 is spaced apart from the antenna radiator 100, and the metal decorative part 200 has little effect on the radiation performance of the antenna radiator 100, so the antenna radiator 100 can have better radiation performance.

[0031] Please refer to Figure 3 , Figure 3 FIG. 4 is a third structural diagram of the electronic device 10 according to an embodiment of the present application. The electronic device 10 may further include a camera module 400 .

[0032] The camera module 400 can collect ambient light signals for imaging, thereby realizing photo taking or video recording. The camera module 400 may include the metal decorative member 200 of the aforementioned embodiment and at least one camera 410. The metal decorative member 200 of the aforementioned embodiment may be the metal decorative member 200 of the camera module 400. At least one mounting hole 210 may be formed on the metal decorative member 200, and one camera 410 may be disposed in one mounting hole 210.

[0033] It is understandable that the camera 410 may include a lens and a base. The lens is mounted on the base to fix the lens. The base may be mounted on a frame of the electronic device 10 (e.g., a middle frame 700 described below) or on a support plate of the electronic device 10 (e.g., a circuit board 800 described below) for fixing.

[0034] It is understandable that the camera module 400 may be a rear camera of the electronic device 10. The metal decorative member 200 may form one or more mounting holes 210 around the camera 410, and the camera 410 may be located in the mounting holes 210. The metal decorative member 200 may play a decorative role on the one hand, preventing the internal structure of the camera 410 from being observed from the outside of the electronic device 10; on the other hand, it may also play a role in assisting the fixing of the camera 410, thereby enhancing the structural stability of the camera 410.

[0035] In the electronic device 10 of the embodiment of the present application, the metal decorative part 200 is reused as the metal decorative part 200 of the camera module 400. The first detection circuit 310 uses the metal decorative part 200 of the camera module 400 as a sensing element for proximity detection. The metal decorative part 200 of the camera module 400 has a larger area, and the sensing area of ​​the metal decorative part 200 for proximity detection is larger, so the proximity detection of the metal decorative part 200 is more sensitive.

[0036] Please combine Figure 3 Please also refer to Figure 4 and Figure 5 , Figure 4 for Figure 3 A schematic diagram of another aspect of the structure of the electronic device 10 is shown. Figure 5 for Figure 3 The electronic device 10 of the embodiment of the present application may further include a display screen 500 and a rear housing 600.

[0037] The display screen 500 can form the display surface of the electronic device 10 for displaying information such as images and texts. The display screen 500 can include a display screen 500 of a type such as a liquid crystal display 500 (Liquid Crystal Display, LCD) or an organic light-emitting diode display screen 500 (Organic Light-Emitting Diode, OLED). The display screen 500 can be a full screen, or the display screen 500 can also be a non-full screen. A cover plate can also be provided on the display screen 500 to protect the display screen 500 from being scratched or damaged by water. The cover plate can be a transparent glass cover plate, so that the user can observe the content displayed on the display screen 500 through the cover plate. It can be understood that the cover plate can be a glass cover plate made of sapphire.

[0038] The rear cover 600 and the display screen 500 can seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10. The material of the rear cover 600 can include but is not limited to metal, ceramic, plastic and other materials.

[0039] The rear shell 600 can be integrally formed. During the molding process of the rear shell 600, an opening can be formed on the rear shell 600, and the camera module 400 and other structures can be installed in the opening. The camera module 400 can be arranged relative to the opening so that at least a portion of the projection of the camera module 400 on the rear shell 600 can be located in the opening. For example, the projection of the lens of the camera 410 of the camera module 400 on the rear shell 600 can be located in the opening so that the lens of the camera module 400 can collect light from outside the electronic device 10 through the opening; other structures of the camera module 400, such as the base of the camera 410, at least a portion of the projection of the metal decorative part 200 on the rear shell 600 can be located in the opening.

[0040] like Figure 5 As shown, at least part of the metal decorative part 200 may extend in a direction away from the rear shell 600 and the antenna radiator 100 and protrude from the rear shell 600, and at least part of the metal decorative part 200 may be located on one side of the outer surface of the rear shell 600 and protrude from the outer surface. At this time, the antenna radiator 100 is located on one side of the inner surface of the rear shell 600, and at least part of the metal decorative part 200 is located on one side of the outer surface of the rear shell 600. At least part of the metal decorative part 200 and the antenna radiator 100 may be located on opposite sides of the rear shell 600, and the metal decorative part 200 may be further away from the antenna radiator 100.

[0041] It is understandable that if Figures 3 to 5 As shown, the metal decorative part 200 of the embodiment of the present application can have a larger area. For example, the length, width and thickness of the metal decorative part 200 can be 44×25.6×1.31 mm, and the area of ​​the metal decorative part 200 can be 621.482 square millimeters; the distance from the metal decorative part 200 to the upper edge of the electronic device 10 can be 6 mm, the distance from the metal decorative part 200 to the left edge of the electronic device 10 can be 6.5 mm, the projection area of ​​the metal decorative part 200 on the upper edge of the electronic device 10 can be 28.5 square millimeters, and the projection area of ​​the metal decorative part 200 on the left edge of the electronic device 10 can be 52.4 square millimeters. The sensing area of ​​the metal decorative part 200 of the embodiment of the present application can cover the upper part, the back side, and the left side of the electronic device 10, and the metal decorative part 200 has a larger sensing area.

[0042] In the electronic device 10 of the embodiment of the present application, the metal decorative part 200 protrudes from the outer surface of the metal decorative part 200 along the outer surface direction of the rear shell 600. On the one hand, the metal decorative part 200 is away from the antenna radiator 100 to reduce interference with the antenna radiator 100; on the other hand, there is a height difference between the metal decorative part 200 and the rear shell 600 of the electronic device 10. When performing proximity detection, the metal decorative part 200 does not need to be infinitely close to the upper edge, lower edge, left edge, and right edge of the electronic device 10. The setting position of the metal decorative part 200 is more flexible. At the same time, the metal decorative part 200 covers a wider sensing area.

[0043] Please refer again to Figure 4 The electronic device 10 of the embodiment of the present application may further include a middle frame 700 .

[0044] The middle frame 700 may be a thin plate or sheet-like structure, or a hollow frame structure. The middle frame 700 is used to provide support for the electronic devices or functional components in the electronic device 10, so as to install the electronic devices and functional components of the electronic device 10 together. For example, the middle frame 700 may be provided with structures such as grooves, protrusions, and through holes to facilitate the installation of the electronic devices or functional components of the electronic device 10. It is understandable that the material of the middle frame 700 may include metal or plastic.

[0045] It is understandable that the display screen 500 and the rear shell 600 can be connected to the middle frame 700 , and the display screen 500 , the middle frame 700 and the rear shell 600 together form a housing space for arranging various components and various structures of the electronic device 10 .

[0046] It is understandable that one or more gaps may be formed on the middle frame 700 , and the gaps may enable the middle frame 700 to form one or more metal branches 710 , and the antenna radiator 100 may include one or more metal branches 710 .

[0047] It is understandable that the electronic device 10 can fill the one or more gaps with a non-conductive material to ensure the structural strength of the middle frame 700 .

[0048] In the electronic device 10 of the embodiment of the present application, the antenna radiator 100 reuses the metal branch 710 of the middle frame 700, which can not only save the production cost of the antenna radiator 100, but also reduce the space occupied by the antenna radiator 100, thereby realizing the miniaturized design of the electronic device 10.

[0049] Please refer again to Figure 4 The electronic device 10 of the embodiment of the present application may further include a circuit board 800 .

[0050] The circuit board 800 is arranged on the middle frame 700 for fixing, and the circuit board 800 is sealed inside the electronic device 10 through the rear shell 600. The circuit board 800 may be a mainboard of the electronic device 10. A processor may be integrated on the circuit board 800, and one or more functional components such as an earphone interface, an acceleration sensor, a gyroscope, and a motor may also be integrated. At the same time, the display screen 500 may be electrically connected to the circuit board 800 so that the display of the display screen 500 is controlled by the processor on the circuit board 800.

[0051] It is understandable that the antenna radiator 100 can be disposed on the circuit board 800. For example, the antenna radiator 100 can be formed on the circuit board 800 by, but not limited to, laser direct structuring (LDS) or spray printing (PDS). For another example, the antenna radiator 100 can also be disposed or connected to the circuit board 800 in the form of a flexible circuit board 800.

[0052] It should be noted that, in addition to being formed on the middle frame 700 and arranged on the circuit board 800, the embodiment of the present application may also have other arrangement forms. For example, the antenna radiator 100 may be arranged or connected to the antenna support member, small board and other structures of the electronic device 10. The embodiment of the present application is not limited to this.

[0053] Please refer again to Figure 4 The electronic device 10 of the embodiment of the present application may further include a battery 900 .

[0054] The battery 900 is disposed on the middle frame 700, and the battery 900 is sealed inside the electronic device 10 through the rear shell 600. At the same time, the battery 900 is electrically connected to the circuit board 800 so that the battery 900 can power the electronic device 10. Among them, a power management circuit may be disposed on the circuit board 800. The power management circuit is used to distribute the voltage provided by the battery 900 to various electronic devices in the electronic device 10.

[0055] It should be noted that the above is only an illustrative example of the electronic device 10 in the embodiment of the present application. The electronic device 10 may also include other structures, such as an acoustic-to-electric conversion module, a posture detection module, etc. The embodiment of the present application does not limit the specific structure of the electronic device 10.

[0056] Based on the above electronic device 10, please combine Figure 1 , Figure 2 Please also refer to Figure 6 , Figure 6 for Figure 1An electrical connection diagram of the first detection circuit 310 of the detection module 300. The first detection circuit 310 of the detection module 300 of the embodiment of the present application may be a detection channel of the detection module 300.

[0057] like Figure 6 As shown, the first detection circuit 310 may include, but is not limited to, a first capacitor C1, a second capacitor C2, and a first inductor L1. One end of the first capacitor C1 may be electrically connected to the antenna radiator 100, and the other end of the first capacitor C1 may be grounded, so that the antenna radiator 100 may be grounded through the first capacitor C1. One end of the second capacitor C2 may be electrically connected to the antenna radiator 100, and the other end of the second capacitor C2 may be grounded; one end of the first inductor L1 may be connected in parallel with the second capacitor C2 to the antenna radiator 100, and the other end of the first inductor L1 may be grounded.

[0058] It can be understood that when the detection module 300 is a detection device such as a capacitive sensor and the antenna radiator 100 is multiplexed as a sensing element of the first detection circuit 310, in order to make the change in the capacitance value detected by the first detection circuit 310 larger, at this time, the antenna radiator 100 is not suitable for direct grounding. The antenna radiator 100 needs to be grounded through the first capacitor C1, and the antenna radiator 100 can be in a relatively suspended state.

[0059] It can be understood that since the first detection circuit 310 is electrically connected to the antenna radiator 100, in order to reduce the influence of the first detection circuit 310 on the antenna radiator 100, one end of the second capacitor C2 and the first inductor L1 connected in parallel is electrically connected to the antenna radiator 100 and the other end is grounded, thereby reducing the influence of the first detection circuit 310 on the antenna radiator 100 when it is working.

[0060] It is understandable that the structure of the first detection circuit 310 in the embodiment of the present application is not limited to the above example. Figure 6As shown, the first detection circuit 310 may also include, but is not limited to, a second resistor R2, a third inductor L3, a second diode D2, and a first switch SW1. One end of the second resistor R2 may be electrically connected to the control chip 330 (e.g., the CS0 port of the control chip 330), and the other end of the second resistor R2 may be electrically connected to the first inductor L1; one end of the second diode D2 may be electrically connected to the other end of the whole formed by the second capacitor C2 and the first inductor L1 in parallel, and the other end of the second diode D2 may be electrically connected to the ground plane GND to achieve grounding; the third inductor L3 may be electrically connected to one end of the second capacitor C2; one end of the first switch SW1 may be electrically connected to the third inductor L3, and the other end of the first switch SW1 may be electrically connected to the ground plane GND to achieve grounding. It can be understood that the second resistor R2, the third inductor L3, the second diode D2, and the first switch SW1 can tune and filter the electrical signal provided by the first detection circuit 310 to reduce the influence of the first detection circuit 310 on the antenna radiator 100.

[0061] It should be noted that the structure of the first detection circuit 310 in the embodiment of the present application is not limited to the above example, and the embodiment of the present application does not limit the specific structure of the first detection circuit 310.

[0062] Please refer again to Figure 6 , when the distance between the detection module 300 and the antenna radiator 100 is greater than the preset distance threshold, the control chip 330 includes a first differential signal terminal such as port CS4 and a second differential signal terminal such as port CS0. The detection module 300 may also include a reference circuit 340, one end of the reference circuit 340 is electrically connected to the first differential signal terminal such as port CS4, and the other end is grounded, and one end of the first detection circuit 310 is electrically connected to the second differential signal terminal such as port CS0, and the other end is grounded. Thus, the reference circuit 340 and the first detection circuit 310 can transmit electrical signals in the form of differential signals.

[0063] It is understandable that the control chip 330 can provide a differential excitation current, which includes two current signals, the two current signals have the same amplitude and opposite phase, or it is understood that the phase difference of the two current signals is 180 degrees. In addition, the differential excitation current can be a balanced signal. It is understandable that if the analog signal is directly transmitted during the transmission process, it is an unbalanced signal; if the original analog signal is inverted, and then the inverted analog signal and the original analog signal are transmitted at the same time, the inverted analog signal and the original analog signal are called balanced signals. During the transmission process, the balanced signal passes through a differential amplifier, and the original analog signal and the inverted analog signal are subtracted to obtain an enhanced original analog signal. Since the two transmission lines are subject to the same interference during the transmission process, the same interference signal is subtracted during the subtraction process, so the balanced signal has better anti-interference performance.

[0064] It is understandable that when the distance between the detection module 300 and the antenna radiator 100 is greater than the preset distance threshold, the distance between the antenna radiator 100 and the detection module 300 is relatively far. On the one hand, the routing of the detection module 300 has a greater impact on the antenna radiator 100. On the other hand, if the routing of the detection module 300 is too long, it will also affect the proximity detection sensitivity of the first detection circuit 310 and the antenna radiator 100. In the embodiment of the present application, the reference circuit 340 and the first detection circuit 310 transmit electrical signals in the form of differential signals, which can reduce the routing of the first detection circuit 310 and ensure the detection sensitivity of the first detection circuit 310.

[0065] It is understandable that if Figure 6 As shown, the reference circuit 340 may include a third resistor R3 and a fifth capacitor C5, the third resistor R3 and the fifth capacitor C5 may be connected in series, one end of the third resistor R3 may be electrically connected to the control chip 330 of the detection module 300, the other end of the third resistor R3 may be electrically connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 may be electrically connected to the ground plane GND and grounded. The current may be transmitted along the path of the control chip 330, the reference circuit 340, the ground plane GND, the first detection circuit 310, and the antenna radiator 100.

[0066] It is understandable that the structure of the reference circuit 340 is not limited to the above examples. For example, the reference circuit 340 may also include one or more electronic components such as capacitors, inductors, resistors, diodes, etc. The embodiment of the present application does not limit the specific structure of the reference circuit 340.

[0067] Please combine Figure 6 Please also refer to Figure 7 , Figure 7 for Figure 1 Another electrical connection diagram of the first detection circuit 310 of the detection module 300. When the distance between the detection module 300 and the antenna radiator 100 is less than or equal to a preset distance threshold, the first detection circuit 310 may include a first resistor R1 and a first diode D1.

[0068] One end of the first resistor R1 may be directly or indirectly electrically connected to the antenna radiator 100, and the other end of the first resistor R1 may be electrically connected to the control chip 330. One end of the first diode D1 may be directly or indirectly electrically connected between the antenna radiator 100 and the first resistor R1, and the other end of the first diode D1 may be electrically connected to the ground plane GND to achieve grounding.

[0069] It can be understood that when the distance between the detection module 300 and the antenna radiator 100 is small, at this time, the wiring between the first detection circuit 310 and the antenna radiator 100 is shorter, and the first detection circuit 310 can adjust the influence of the current of the first detection circuit 310 on the antenna radiator 100 through the first resistor R1 and the first diode D1.

[0070] It can be understood that when the first detection circuit 310 is electrically connected to the antenna radiator 100 through the first resistor R1 and the first diode D1, the antenna radiator 100 can still be grounded through the first capacitor C1.

[0071] It is understandable that the structure of the first detection circuit 310 is not limited to the above examples, for example, it may also include one or more resistors, capacitors, inductors, switches, etc. connected in series or in parallel. The specific structure of the first detection circuit 310 is not limited in the embodiment of the present application.

[0072] It should be noted that when the distance between the detection module 300 and the antenna radiator 100 is less than or equal to the preset distance threshold, the first detection circuit 310 may also adopt the following method: Figure 6 When the distance between the detection module 300 and the antenna radiator 100 is greater than the preset distance threshold, the first detection circuit 310 may also be used as Figure 7 In this case, the detection module 300 can reduce the influence of excessively long wiring by adding other circuit structures. It is understandable that the first detection circuit 310 may include Figure 6 The circuit structure shown may also include Figure 7 The circuit structure shown can also include Figure 6 and Figure 7 The embodiment of the present application does not limit the specific structure of the first detection circuit 310.

[0073] Among them, please refer to Figure 8 , Figure 8 for Figure 1 An electrical connection diagram of the second detection circuit 320 of the detection module 300. The metal decoration part 200 of the embodiment of the present application may include at least a first grounding point A1 and a second grounding point A2 arranged at intervals, and the second detection circuit 320 may include a third capacitor C3, a fourth capacitor C4 and a second inductor L2.

[0074] One end of the third capacitor C3 can be electrically connected to the first grounding point A1, and the other end of the third capacitor C3 can be electrically connected to the ground plane GND to achieve grounding, so as to achieve grounding of the metal decorative part 200. One end of the fourth capacitor C4 can be electrically connected to the second grounding point A2, and the other end of the fourth capacitor C4 can be electrically connected to the ground plane GND to achieve grounding. One end of the second inductor L2 can be connected to the fourth capacitor C4 in parallel at the second grounding point, and the other end of the second inductor L2 can be electrically connected to the ground plane GND to achieve grounding.

[0075] It can be understood that the metal decorative part 200 of the embodiment of the present application is grounded to the ground plane GND through the third capacitor C3, which can not only ensure that the metal decorative part 200 does not generate static electricity, but also ensure that the metal decorative part 200 does not affect the radiation efficiency of the surrounding antenna radiator 100, and will not affect the radiation stray performance of the antenna radiator 100.

[0076] It is understandable that the metal decorative member 200 may further include other grounding points, such as a third grounding point, a fourth grounding point, etc. These grounding points may also be grounded through capacitors to further ensure that the metal decorative member 200 is grounded.

[0077] It is understood that the second detection circuit 320 may also include, but is not limited to, a fourth resistor R4, a fourth inductor L4, a third diode D3, and a second switch SW2. One end of the fourth resistor R4 may be electrically connected to the control chip 330, and the other end of the fourth resistor R4 may be electrically connected to the second inductor L2; one end of the third diode D3 may be electrically connected to the other end of the whole formed by the fourth capacitor C4 and the second inductor L2 in parallel, and the other end of the third diode D3 may be electrically connected to the ground plane GND to achieve grounding; the fourth inductor L4 may be electrically connected to one end of the third capacitor C3; one end of the second switch SW2 may be electrically connected to the third inductor L3, and the other end of the second switch may be electrically connected to the ground plane GND to achieve grounding. It is understood that the fourth resistor R4, the fourth inductor L4, the third diode D3, and the second switch SW2 may filter and tune the current provided by the control chip 330 to improve the detection sensitivity of the second detection circuit 320.

[0078] It should be noted that the second detection circuit 320 of the embodiment of the present application is not limited to the above structure, for example, it may also include but is not limited to one or more inductors, capacitors, resistors, switches and other devices connected in series or in parallel. The embodiment of the present application does not limit the specific structure of the second detection circuit 320.

[0079] It should be noted that the detection module 300 of the embodiment of the present application may also include, but is not limited to, a control circuit (eg, Figures 6 to 8SCL port, SDA port, NIRQ port), power supply circuit (for example Figures 6 to 8 The Host module, VDD, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the sixth capacitor C6, and the seventh capacitor C7 in the detection module 300 are not limited in the embodiment of the present application.

[0080] The electronic device 10 of the embodiment of the present application utilizes the metal decorative part 200 as the sensing element for proximity detection. The electronic device 10 does not need to be additionally provided with a sensing element, which can save costs and realize a miniaturized design of the electronic device 10. Meanwhile, compared with reusing the antenna radiator 100 in the form of FPC / LDS / PDS etc. as a sensing element, the present application reuses the metal decorative part 200 as a sensing element to avoid the effect of the capacitor and inductor components of the second detection circuit 320 on the efficiency reduction of the antenna radiator 100. The metal decorative part 200 of the present application will not affect the efficiency of the antenna radiator 100. Meanwhile, the metal decorative part 200 of the present application as a sensing element can also have a larger sensing area, and the setting position of the metal decorative part 200 is more flexible.

[0081] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0082] The electronic device provided by the embodiment of the present application is described in detail above. The principle and implementation method of the present application are described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises a display screen and a rear shell, wherein the display screen is located on one side of the inner surface of the rear shell; the electronic device further comprises: An antenna radiator is located on one side of the inner surface of the rear shell; a metal decorative piece, spaced apart from the antenna radiator, at least part of the metal decorative piece being located on one side of the outer surface of the rear housing and protruding from the outer surface; the metal decorative piece comprising a first grounding point and a second grounding point spaced apart; and A detection module includes a first detection circuit and a second detection circuit, wherein the first detection circuit is electrically connected to the antenna radiator, and the first detection circuit and the antenna radiator are used together for human body approach detection; the second detection circuit is electrically connected to the metal decorative part, and the second detection circuit includes a third capacitor and a fourth capacitor, one end of the third capacitor is electrically connected to the first grounding point, and the other end of the third capacitor is electrically connected to the grounding plane and grounded to achieve grounding of the metal decorative part; one end of the fourth capacitor is electrically connected to the second grounding point, and the other end of the fourth capacitor is electrically connected to the grounding plane and grounded; the second detection circuit and the metal decorative part are also used together for human body approach detection; wherein, When the distance between the detection module and the antenna radiator is greater than a preset distance threshold, the detection module also includes a control chip and a reference circuit, the control chip includes a first differential signal terminal and a second differential signal terminal, one end of the reference circuit is electrically connected to the first differential signal terminal and the other end is grounded, and one end of the first detection circuit is electrically connected to the second differential signal terminal and the other end is grounded.

2. The electronic device according to claim 1, characterized in that: The electronic device further comprises: The camera module comprises at least one camera and the metal decorative piece. The metal decorative piece is formed with at least one mounting hole, and one camera is arranged in one mounting hole.

3. The electronic device according to claim 2, characterized in that: An opening is formed on the rear shell, and the camera module is arranged relative to the opening. At least a portion of the metal decorative part extends in a direction away from the rear shell and the antenna radiator and protrudes from the rear shell.

4. The electronic device according to claim 1, characterized in that: The electronic device further comprises: A middle frame is formed with a gap and forms a metal branch on the middle frame, and the antenna radiator includes the metal branch.

5. The electronic device according to claim 1, characterized in that: The electronic device further comprises: A circuit board, on which the antenna radiator is arranged.

6. The electronic device according to claim 1, characterized in that: The first detection circuit comprises: A first capacitor, one end of which is electrically connected to the antenna radiator and the other end of which is grounded, so as to achieve grounding of the antenna radiator; A second capacitor, one end of which is electrically connected to the antenna radiator and the other end of which is grounded; and A first inductor, wherein one end of the first inductor and the second capacitor are connected in parallel to the antenna radiator, and the other end of the first inductor is grounded.

7. The electronic device according to any one of claims 1 to 5, characterized in that: When the distance between the detection module and the antenna radiator is less than or equal to a preset distance threshold, the first detection circuit includes: A first resistor is electrically connected to the antenna radiator; and A first diode, one end of the first diode is electrically connected between the antenna radiator and the first resistor, and the other end of the first diode is grounded.

8. The electronic device according to any one of claims 1 to 5, characterized in that: The second detection circuit also includes: A second inductor, one end of the second inductor is connected in parallel with the fourth capacitor to the second grounding point, and the other end of the second inductor is grounded.

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