Electronic device

Abstract

The utility model relates to the technical field of electronic equipment, in particular to electronic equipment, and the electronic equipment comprises a display side which comprises a display area and a frame area at least partially surrounding the display area; a backplane side opposite the display side; the antenna assembly is arranged on the back plate side; the detection element is arranged in the frame area and used for detecting the detection distance between the human body and the display side; and the control assembly is electrically connected with the detection element and is used for reducing the power of the antenna assembly to target power based on the condition that the detection distance is smaller than or equal to the first distance threshold.

Description

Technical Field

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

[0002] SAR (Specific Absorption Rate, unit: W / Kg) refers to the electromagnetic radiation energy absorbed or consumed by a unit mass of the human body in a unit time. SAR testing is to measure the impact of radiation on the human body. In order to reduce the harm caused by electromagnetic radiation from electronic devices such as mobile phones to human health and safety, some countries and regions have formulated mandatory safety standards for mobile phone SAR.

[0003] Currently, SAR sensors are often used in mobile phones and other electronic devices to connect to the antenna feed point. The SAR sensor chip detects the change in capacitance on the antenna body to determine the distance between the object and the antenna. When the capacitance value exceeds a certain threshold, the chip calls the power reduction mechanism to reduce the conducted power and thus reduce SAR.

[0004] However, due to the limitations of the overall device structure and radiation index requirements, antenna patterns are mostly designed on the back and sides of the phone, which cannot meet the SAR certification requirements on the front. Utility Model Content

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an electronic device.

[0006] The present application provides an electronic device, including:

[0007] A display side, comprising a display area and a frame area at least partially surrounding the display area;

[0008] a back panel side opposite to the display side;

[0009] An antenna assembly, arranged on the back panel side;

[0010] A detection element is arranged in the frame area, and the detection element is used to detect the detection distance between the human body and the display side;

[0011] A control component is electrically connected to the detection element, and is used to reduce the power of the antenna component by a target power based on the detection distance being less than or equal to a first distance threshold.

[0012] Optionally, the first distance threshold is 0 mm;

[0013] The detection element includes an electrode plate, and the control component is used to detect whether the detection distance between the human body and the display side is 0 based on the capacitance of the detection element.

[0014] Optionally, the number of the detection elements is the same as the number of the antenna components, and the detection elements correspond to the antenna components one-to-one.

[0015] Optionally, the distance between the detection element and the corresponding antenna assembly is less than a second distance threshold.

[0016] Optionally, a screen stand is also included;

[0017] The screen bracket is arranged in the display area and the frame area;

[0018] The detection element is arranged on a side of the screen bracket facing the back plate.

[0019] Optionally, the detection element is bonded to the screen bracket.

[0020] Optionally, a receiving groove is provided on one side of the screen bracket facing the back plate;

[0021] The detection element is arranged in the accommodating groove.

[0022] Optionally, the screen bracket is made of non-metallic material.

[0023] Optionally, the control component is disposed on a main board, and the detection element is electrically connected to the main board via a metal spring, and is further electrically connected to the control component.

[0024] Optionally, the electronic device includes at least one of a mobile phone, a tablet computer, a smart watch, and a smart bracelet.

[0025] The electronic device provided in the embodiment of the present application detects the detection distance between the human body and the display side of the electronic device by setting a detection unit at the position of the border area on the display side of the electronic device. Since the control component can control the antenna component to reduce the power when the detection distance is less than or equal to the first distance threshold, the SAR can be reduced, so that the electronic device meets the SAR certification requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of another electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application includes:

[0031] The display side 100 includes a display area 101 and a frame area 102 at least partially surrounding the display area 101 .

[0032] The back panel side 200 is opposite to the display side 100 .

[0033] The antenna assembly 300 is disposed on the back panel side 200 .

[0034] The detection element 400 is disposed in the frame area 102 , and is used to detect the detection distance between the human body and the display side 100 .

[0035] The control component (not shown) is electrically connected to the detection element 400, and is used to reduce the power of the antenna component 300 to a target power value based on the detection distance being less than or equal to a first distance threshold.

[0036] like Figure 1 As shown, the embodiment of the present application is described by taking the electronic device as a mobile phone as an example. In all the following embodiments, the mobile phone is used to represent the electronic device for exemplary description. Figure 1 (a) is the front of the phone. Figure 1 (b) in the figure is the back of the mobile phone, and the back is the side opposite to the front. The display side 100 is the front of the mobile phone (the side where the (main) screen is set), the back panel side 200 is the back of the mobile phone, and the antenna assembly 300 is set on the back panel side 200 of the mobile phone. If the SAR sensor chip only detects the change in the capacitance value on the antenna body to determine the distance between the object and the antenna like in the traditional solution, when the capacitance value exceeds a certain threshold, the chip calls the power reduction mechanism to reduce the conducted power to achieve SAR reduction, then it will inevitably fail to meet the requirements of the front SAR certification.

[0037] Based on this, the present solution sets a detection element 400 at the border area 102 of the display side 100 of the mobile phone. The detection element 400 can be used to detect the detection distance between the human body and the display side 100. The control component can determine that the detection distance is less than or equal to the first distance threshold based on the detection result (detection distance) of the detection element 400, and reduce the power of the antenna component 300 to the target power when the detection distance is less than or equal to the first distance threshold, thereby reducing the SAR value and meeting the SAR certification requirements. Among them, there is a positively correlated linear relationship between the SAR value and the power of the antenna component 300. When the power of the antenna component 300 is less than or equal to the target power, the SAR value meets the relevant certification requirements.

[0038] In some embodiments, the first distance threshold is 0 mm.

[0039] The detection element 400 includes an electrode plate, and the control component is used to detect whether the detection distance between the human body and the display side 100 is 0 based on the capacitance of the detection element 400 .

[0040] Specifically, some certification requirements require that the SAR should not be too high when the distance between the human body and the front of the electronic device is 0. To this end, the detection element 400 in the embodiment of the present application can be directly set as an electrode plate. Under this scheme, when the human body directly contacts the mobile phone and faces the electrode plate, the human body itself can form a natural capacitor with the electrode plate, so the capacitance of the motor plate changes.

[0041] The control component can directly determine whether the human body has touched the front of the mobile phone based on the change in the capacitance of the detection element 400, that is, the distance between the human body and the front of the mobile phone is 0 mm. When it is determined that the human body has touched the front of the mobile phone, the power of the antenna component 300 is reduced to the target power to meet the SAR certification requirements.

[0042] Continue reading Figure 1 In some embodiments, the number of detection elements 400 is the same as the number of antenna components 300 , and the detection elements 400 correspond to the antenna components 300 one by one.

[0043] Specifically, in some electronic devices, multiple antenna assemblies 300 may be arranged on the back panel side 200 of the electronic device, and each antenna assembly 300 may emit a radiation signal. To this end, the embodiment of the present application may be provided with the same number of detection elements 400 as the antenna assembly 300, so that when the human body approaches each antenna assembly 300, the power of the corresponding antenna assembly 300 can be reduced to the target power, meeting the requirements of SAR certification.

[0044] In some embodiments, the distance between the detection element 400 and the corresponding antenna assembly 300 is less than a second distance threshold.

[0045] Specifically, if the distance between the antenna component 300 and the detection element 400 is far, and the distance between the antenna component 300 and the human body is still far when the human body is in direct contact with the front of the mobile phone, if the power of the antenna component 300 is reduced to a large extent, the signal transmission capability of the antenna component 300 will be greatly reduced, which is unnecessary.

[0046] Therefore, in the embodiment of the present application, the distance between each antenna component 300 and the detection element 400 should be as close as possible, so that the power of the antenna component 300 can be reduced relatively slightly (or relatively reasonably) when the distance between the human body and the front of the mobile phone is 0, so as to meet the requirements of SAR certification and prevent the power of the antenna component 300 from decreasing too much, thereby causing unnecessary impact on the ability of the antenna component 300 to transmit signals.

[0047] Preferably, if the detection element 400 is an individual unit of a smaller area, the vertical projection of the detection element 400 on the back panel side 200 and the vertical projection of the antenna assembly 300 on the back panel side 200 may completely overlap, or at least partially overlap. This makes the distance between the detection element 400 and the corresponding antenna assembly 300 less than a second distance threshold, wherein the second distance threshold may be within 2 cm. As another option, the detection element 400 may cover the entire border area 102, but if the detection element 400 directly covers the entire border area 102, this consideration is not necessary. As an optional option, the detection element 400 may be a 2 mm × 20 mm rectangular planar structure, which may be disposed on an FPC flexible circuit board and then connected to a control assembly.

[0048] Figure 2 This is another schematic diagram of the structure of an electronic device provided by an embodiment of the present application. In some embodiments, a screen bracket 500 is also included.

[0049] The screen bracket 500 is disposed in the display area 101 and the frame area 102 .

[0050] The detection element 400 is disposed on a side of the screen bracket 500 facing the back panel side 200 .

[0051] like Figure 2 As shown, the screen bracket 500 is used to fix the screen, and it can be a front structure that covers the display area 101 and the frame area 102 of the entire display side 100 .

[0052] In the embodiment of the present application, the detection element 400 can be arranged on the side of the screen bracket 500 facing the back panel side 200. Under this scheme, the screen packaging structure of the screen bracket 500 facing the display side 100 is less affected. This is because the side of the screen bracket 500 facing the display side 100 is mainly used to package the screen, and the sealing requirement is relatively high. If the detection element 400 is arranged on this side, the sealing difficulty requirement is higher, and even the flatness of the screen is affected. The side of the screen bracket 500 facing the back panel is the internal space of the mobile phone, which is mainly provided with the mobile phone motherboard. Although its internal space is also relatively cramped, there is still some space that can be used to set the detection element 400. In addition, after the action of the screen bracket 500, even if the detection element 400 is arranged, it has little effect on the sealing requirement of the mobile phone, and the impact on the sealing requirement is also relatively small.

[0053] In some embodiments, the detection element 400 is bonded to the screen bracket 500 .

[0054] Specifically, the detection element 400 can be directly bonded to the screen bracket 500. This method is simple and convenient, and has low requirements on the difficulty of the assembly process.

[0055] Continue reading Figure 2 In some embodiments, a receiving groove 501 is provided on a side of the screen bracket 500 facing the back panel side 200 .

[0056] The detection element 400 is disposed in the receiving groove 501 .

[0057] In the above embodiment, it can be understood that although setting the detection element 400 on the side of the screen bracket 500 facing the back panel side 200 has lower requirements on the sealing of the mobile phone and the effect of the screen bracket 500 on the flatness of the screen is relatively small, in fact, there must still be an impact.

[0058] To this end, the embodiment of the present application can also set a receiving groove 501 on the screen bracket 500, the volume of the receiving groove 501 can be just equal to the volume of the detection element 400, and the shape of the receiving groove 501 is the same as the shape of the detection element 400, that is, after the detection element 400 is set in the receiving groove 501, the receiving groove 501 can be just filled. In this way, the flatness of the screen bracket 500 is guaranteed. It should be noted that Figure 2 A partial gap is left in the receiving groove 501, but this indication is for the convenience of indication.

[0059] In some embodiments, the screen bracket 500 is made of non-metallic material.

[0060] When the screen bracket 500 is provided, the screen bracket 500 needs to be made of non-metallic material to avoid forming an electrostatic shielding effect and to avoid causing the detection element 400 to fail.

[0061] In some embodiments, the control component is disposed on the main board, and the detection element 400 is electrically connected to the main board through the metal spring 600, and is further electrically connected to the control component.

[0062] The detection element is electrically connected to the control component on the mainboard by means of a metal spring, and the assembly process is relatively simple and convenient for disassembly.

[0063] In some embodiments, the electronic device includes at least one of a mobile phone, a tablet computer, a smart watch, and a smart bracelet.

[0064] The electronic device for meeting the SAR certification requirements provided in the embodiments of the present application can be used not only in mobile phones, but also in various electronic devices. Several possible ones are listed here, but it should be understood that the electronic devices in the embodiments of the present application are not limited to the several ones in the above embodiments.

[0065] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0066] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An electronic device, characterized in that: include: A display side, comprising a display area and a frame area at least partially surrounding the display area; a back panel side opposite to the display side; An antenna assembly, arranged on the back panel side; A detection element is arranged in the frame area, and the detection element is used for detecting the distance between the human body and the display side; A control component is electrically connected to the detection element, and is used to reduce the power of the antenna component by a target power based on the detection distance being less than or equal to a first distance threshold.

2. The electronic device according to claim 1, characterized in that: The first distance threshold is 0 mm; The detection element includes an electrode plate, and the control component is used to detect whether the detection distance between the human body and the display side is 0 based on the capacitance of the detection element.

3. The electronic device according to claim 1, characterized in that: The number of the detection elements is the same as the number of the antenna components, and the detection elements correspond to the antenna components one by one.

4. The electronic device according to claim 3, characterized in that: The distance between the detection element and the corresponding antenna component is less than a second distance threshold.

5. The electronic device according to claim 1, characterized in that: Also includes a screen stand; The screen bracket is arranged in the display area and the frame area; The detection element is arranged on a side of the screen bracket facing the back plate.

6. The electronic device according to claim 5, characterized in that: The detection element is bonded to the screen bracket.

7. The electronic device according to claim 5 or 6, characterized in that: A receiving groove is provided on one side of the screen bracket facing the back plate; The detection element is arranged in the accommodating groove.

8. The electronic device according to claim 5, characterized in that: The screen bracket is made of non-metal material.

9. The electronic device according to claim 1, characterized in that: The control component is arranged on the main board, and the detection element is electrically connected to the main board through a metal spring, and is further electrically connected to the control component.

10. The electronic device according to claim 1, characterized in that: The electronic device includes at least one of a mobile phone, a tablet computer, a smart watch, and a smart bracelet.

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