Electronic device and detection method

Abstract

The present application provides an electronic device and a detection method. The electronic device comprises a fingerprint recognition module, wherein the fingerprint recognition module is used for collecting a fingerprint signal; a first electrode, wherein the first electrode is stacked on the outer side of the fingerprint recognition module; a second electrode, wherein the second electrode is insulated and isolated from the first electrode; and a biological signal collection module, wherein the first electrode and the second electrode are separately electrically connected to the biological signal collection module, and the biological signal collection module collects a bioelectric signal by means of the first electrode and the second electrode. The present application can improve the security performance of health data in an electronic device.

Description

Electronic equipment and testing methods

[0001] This application claims priority to Chinese Patent Application No. 202411551358.3, filed with the Chinese Patent Office on October 31, 2024, entitled "Electronic Device and Testing Method", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of terminal technology, and in particular to an electronic device and a testing method. Background Technology

[0003] To enhance the intelligence of terminal devices, more and more terminal devices are integrating biological detection systems. These systems can perform biological detection functions and obtain biological detection results, thereby providing scientific and effective basis for users' weight control, nutritional balance, and disease diagnosis.

[0004] In related technologies, electrodes are typically integrated into the terminal device, allowing direct detection of bioelectrical signals when the user's skin comes into contact with the electrodes. However, anyone can use the terminal device to detect bioelectrical signals and view the results, thus posing a risk of personal health data leakage. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an electronic device and a detection method that can improve the security of health data in electronic devices.

[0006] A first aspect of this application provides an electronic device, including: a fingerprint recognition module, a first electrode, a second electrode, and a biometric signal acquisition module. The fingerprint recognition module is used to acquire fingerprint signals. The first electrode is stacked on the outer side of the fingerprint recognition module. Here, "outer side" can refer to the side closer to the user when the user holds the electronic device. Thus, when the user's finger contacts the first electrode, the fingerprint recognition module can acquire the user's fingerprint signal. This facilitates the transmission to a system-on-a-chip (SoC) in the electronic device, where the SoC performs fingerprint verification. Successful verification indicates that the user operating the phone is the user corresponding to the fingerprint stored in the electronic device, i.e., the owner of the device or a user associated with the owner.

[0007] The second electrode is insulated from the first electrode. Both the first and second electrodes are electrically connected to the biosignal acquisition module, which can acquire bioelectrical signals. These bioelectrical signals may include electrocardiogram (ECG) signals. Therefore, when the user's left and right hands respectively contact the first and second electrodes, the biosignal acquisition module can acquire ECG signals through these electrodes after successful fingerprint verification. This facilitates the transmission of the ECG signals to the system-on-a-chip (SoC), which then uses the ECG signals to determine the user's health status and outputs ECG information on the display screen, allowing the user to understand their heart health.

[0008] Therefore, this application can help users understand their own heart health status, while also ensuring that the user currently operating the electronic device is the user corresponding to the fingerprint stored in the electronic device, thus preventing other users from using the electronic device to perform electrocardiogram (ECG) testing and view ECG information, thereby improving the security of health data stored in the electronic device.

[0009] In one embodiment of this application, the electronic device includes only a first electrode and a second electrode for acquiring bioelectrical signals, and does not include other electrodes for acquiring bioelectrical signals. In this case, the bioelectrical signal can be a single-lead, single-channel signal.

[0010] In another embodiment of this application, the electronic device further includes a third electrode, which is electrically connected to the biosignal acquisition module. The biosignal acquisition module acquires bioelectrical signals through the first electrode, the second electrode, and the third electrode. The first electrode and the second electrode can form a first electrode pair, the first electrode and the third electrode can form a second electrode pair, and the second electrode and the third electrode can form a third electrode pair. That is, the first electrode, the second electrode, and the third electrode can form three electrode pairs, or a three-lead structure.

[0011] The biosignal acquisition module can acquire a first electrical signal through a first electrode pair, a second electrical signal through a second electrode pair, and a third electrical signal through a third electrode pair. The module can also generate a fourth electrical signal based on the first and second signals, a fifth electrical signal based on the first and third signals, and a sixth electrical signal based on the second and third signals, thus obtaining a bioelectrical signal comprising the first, second, third, fourth, fifth, and sixth electrical signals. Since the bioelectrical signal includes a total of six signals, in this case, it can be a 3-lead, 6-channel electrocardiogram (ECG) signal. That is, the biosignal acquisition module can acquire a 3-lead, 6-channel ECG signal, allowing the system-on-a-chip (SoC) to assess the user's cardiac health based on this signal. The 3-lead, 6-channel ECG signal provides more detailed and informative ECG data, enabling better detection of risk information such as atrial fibrillation, bradycardia, and tachycardia.

[0012] In another embodiment of this application, the electronic device, in addition to including the first electrode, the second electrode, and the third electrode, further includes a fourth electrode, which is electrically connected to the biosignal acquisition module. The biosignal acquisition module acquires bioelectrical signals through the first electrode, the second electrode, and the third electrode and / or the fourth electrode.

[0013] In one example, the biosignal acquisition module acquires bioelectrical signals through a first electrode, a second electrode, and a third electrode.

[0014] In another example, the biosignal acquisition module acquires bioelectrical signals through a first electrode, a second electrode, and a fourth electrode. In this example, the fourth electrode serves the same function as the third electrode in the previous example. Since the back case of a watch in the related technology has two electrodes, which can serve as the third and fourth electrodes respectively, the biosignal acquisition module can select one of the third and fourth electrodes as the third electrode in addition to the first and second electrodes to acquire bioelectrical signals during operation. Here, the bioelectrical signal is also an electrocardiogram (ECG) signal.

[0015] In another example, the biosignal acquisition module can acquire bioelectrical signals via a first electrode, a second electrode, a third electrode, and a fourth electrode. Here, the bioelectrical signals can be physiological parameter signals. That is, the biosignal acquisition module can acquire physiological parameter signals, thereby facilitating the transmission of these signals to a system-on-a-chip (SoC). The SoC then analyzes these signals to obtain physiological parameters such as body fat, body protein, total body water, muscle mass, lean body mass, and mineral content, providing a scientific and effective basis for users' weight control, nutritional balance, disease diagnosis, and muscle training.

[0016] During the test, two fingers of the user's right hand can contact the first and fourth electrodes respectively, and two fingers of the user's left hand can contact the second and third electrodes respectively. A weak alternating current signal is applied between the first and fourth electrodes, and a voltage signal is detected between the second and third electrodes. Physiological parameters can be calculated based on the voltage signal.

[0017] The electronic device also includes a display screen, a bezel, and a rear cover, with the display screen and rear cover positioned opposite each other and the bezel located between the cover and the rear cover.

[0018] Regarding the placement of the first and second electrodes, in one possible implementation, the first and second electrodes are located on the same side of the frame. When the electronic device is a mobile phone, the frame may include a first side and a second side, wherein, in this implementation, the first side may be the right side and the second side may be the left side. In other implementations, the first side may be the left side and the second side may be the right side. The first and second electrodes may both be located on the first side of the frame. When a user needs to use the mobile phone, they place their right hand finger on the first electrode, and the fingerprint acquisition module integrated with the first electrode can detect whether the user has permission to use the electronic device. That is, fingerprint verification is completed as a biometric feature. In addition, to achieve accurate detection of electrocardiogram (ECG) signals, the ECG signal can be detected by using both the user's left and right hands. Therefore, when a user needs to detect ECG signals using the electronic device, the mobile phone can be placed horizontally, and the right hand finger can be placed on the first electrode while the left hand is placed on the second electrode, realizing the recording and detection of a single-lead ECG signal.

[0019] In another possible implementation, the first electrode is located on the first side of the frame, and the second electrode is located on the second side of the frame, with the first and second sides opposite each other. That is, the first and second electrodes are located on opposite sides of the frame. For example, the first electrode is located on the right side of the frame, and the second electrode is located on the left side. In this way, when the electronic device is a mobile phone, the user can hold the phone with their left hand, making contact with the second electrode, and place their right fingers on the first electrode. This grip method is more in line with the user's daily holding habits, increasing the stability of the detection process and improving the user experience.

[0020] Furthermore, when a user holds the phone with their left hand, the left thumb can be positioned in the middle of the frame, and the thenar eminence of the left hand can be positioned near the bottom of the frame. To increase the contact area with the second electrode, in some embodiments of this application, the second electrode is positioned closer to the bottom of the frame than the first electrode. Thus, when the user holds the phone with their left hand, the thenar eminence of the left hand contacts the second electrode. This increases the contact area between the left hand and the second electrode, reducing impedance. Furthermore, this holding posture is ergonomic, thereby increasing the stability of the detection process.

[0021] In some embodiments of this application, a protrusion or a recess may be provided on the side of the first electrode opposite to the fingerprint recognition module. This allows the user to quickly and accurately locate the first electrode when touching the frame via the protrusion or recess.

[0022] Similarly, a protrusion or recess can be provided on the side of the second electrode away from the fingerprint recognition module. In this way, when the user touches the frame, the protrusion or recess can quickly and accurately locate the second electrode.

[0023] When the electronic device also includes a third electrode, in one possible implementation, the third electrode is located on the frame, on a different side from the first and second electrodes. For example, when both the first and second electrodes are located on the first side, the third electrode may be located on the second side; or, when both the first and second electrodes are located on the second side, the third electrode may be located on the first side. When the first electrode is located on the first side and the second electrode is located on the second side, the third electrode may be located at the bottom or top of the frame. In this way, when the electronic device is held by both hands, the left hand can contact the second electrode, the right hand can contact the first electrode, and the user's lower limbs, such as the calf or knee, can contact the third electrode.

[0024] In another possible implementation, the third electrode is disposed on the rear shell. Since the rear shell has a large area, when the third electrode is disposed on the rear shell, the area of ​​the third electrode can be increased. The user can use their lower limbs, such as the calf or knee, to contact the third electrode, thereby increasing the contact area between the third electrode and the user's skin, resulting in better electrical contact and contact stability, and thus increasing detection stability.

[0025] When the electronic device also includes a fourth electrode, in one possible implementation, the fourth electrode is located on the frame. Specifically, the first and second electrodes are located on a first side, and the third and fourth electrodes are located on a second side. This allows two fingers of the right hand to contact the first and fourth electrodes respectively, and two fingers of the left hand to contact the second and third electrodes respectively. This better conforms to the user's grip habit when holding a mobile phone with both hands, and the grip is more stable, thereby improving contact stability and, consequently, detection stability.

[0026] In another possible implementation, the fourth electrode and the third electrode are disposed on the back case at intervals. Since the back case of a watch in the related art has two spaced electrodes, which can serve as the third electrode and the fourth electrode respectively, when the electronic device is a watch, the structure of the watch back case in the related art can be directly utilized without modifying the back case structure.

[0027] Regarding the frame structure, in one possible implementation, the frame can be a split structure. Specifically, the frame includes multiple frame segments and an insulator located between two adjacent frame segments. A first frame segment among the multiple frame segments serves as a first electrode, and / or, a second frame segment among the multiple frame segments serves as a second electrode. Thus, when the frame is manufactured, the first and second electrodes are also manufactured, eliminating the need for additional fabrication of the first and / or second electrodes. This saves on process steps.

[0028] In another possible implementation, the frame is a one-piece conductive structure. A first portion of the conductive structure serves as a first electrode, and / or a second portion serves as a second electrode. Thus, when the frame is manufactured, the first and second electrodes are also manufactured, eliminating the need for additional fabrication of the first and / or second electrodes. This saves on manufacturing processes.

[0029] In some embodiments of this application, a first opening is provided on the frame, through which the first electrode protrudes. Thus, the first electrode functions as a separate button, allowing the user to quickly locate it during use.

[0030] In some embodiments of this application, the electronic device further includes a support portion and a power switch fixed within a frame. A first electrode is fixed to the support portion, which is disposed opposite to the power switch. The support portion is configured to move toward the power switch and act on the power switch when pressed by the first electrode. Thus, when the user presses the first electrode, the support portion acts on the power switch under the action of the first electrode, thereby illuminating the display screen. Therefore, the first electrode and the fingerprint recognition module can serve as a power button. In other words, in this application, the first electrode, the fingerprint recognition module, and the power button are integrated, thereby improving the integration of the button and simplifying the structure of the electronic device.

[0031] Furthermore, the electronic device also includes a stacked covering structure and a first connecting layer. The covering structure is located on the surface of the first electrode facing the fingerprint recognition module and covers the side of the fingerprint recognition module. The side of the support portion facing away from the fingerprint recognition module faces the power switch, and an air gap is formed between the support portion and the fingerprint recognition module. When the fingerprint recognition module is an ultrasonic fingerprint recognition module, it will vibrate during the fingerprint signal acquisition process. The air gap formed between the support portion and the fingerprint recognition module can provide sufficient space for the vibration of the fingerprint recognition module, avoiding affecting the resonant frequency of the fingerprint recognition module, thereby improving the recognition accuracy.

[0032] In some embodiments of this application, the support portion includes a bottom structure disposed on the side of the first connecting layer opposite to the covering structure and a side structure disposed on the bottom structure, the side structure having a through hole. The electronic device also includes a flexible circuit board and a sealing structure, the flexible circuit board being connected to the fingerprint recognition module and passing through the through hole. The sealing structure fills the through hole and is located between the flexible circuit board and the sidewall of the through hole. Thus, the sealing structure provides a buffer for the installation of the flexible circuit board on the support portion, thereby protecting the flexible circuit board.

[0033] In some embodiments of this application, the electronic device further includes volume buttons. A second opening is provided on the frame, and a second electrode is exposed through the second opening. The second electrode is stacked on the outside of the volume buttons; or, the second electrode serves as the volume button. Thus, the volume buttons and the second electrode can be integrated, thereby improving the integration of the buttons and simplifying the structure of the electronic device.

[0034] In some embodiments of this application, the electronic device further includes a second connection layer and a substrate, with the fingerprint recognition module disposed on the substrate. The second connection layer connects the substrate and the first electrode, that is, the fingerprint recognition module is disposed on the side of the substrate opposite to the first electrode. This direct connection between the substrate and the first electrode improves connection flatness and facilitates the propagation of ultrasonic waves. Alternatively, the second connection layer connects the fingerprint recognition module and the first electrode, that is, the substrate is disposed on the side of the fingerprint recognition module opposite to the first electrode.

[0035] A second aspect of this application also provides a detection method applied to an electronic device, the electronic device including a fingerprint recognition module, a first electrode, a second electrode, and a biosignal acquisition module.

[0036] The detection method includes: a fingerprint recognition module acquiring fingerprint signals; running an application upon successful fingerprint signal verification; a biosignal acquisition module acquiring bioelectrical signals via a first electrode and a second electrode; generating bio-detection results and displaying them on the application. The bio-detection results may include at least one of an electrocardiogram (ECG), health status information, and health reminder information. Therefore, this application can help users understand their own heart health status while also ensuring that the user currently operating the electronic device is the user corresponding to the fingerprint stored in the electronic device, preventing other users from using the electronic device for ECG detection and viewing ECG information, thereby improving the security of health data stored in the electronic device.

[0037] In some embodiments of this application, running an application when fingerprint signal verification is successful includes: running the application when fingerprint signal verification is successful and a first contact condition and a second contact condition are met; the first contact condition is that the first impedance of the first electrode and the second impedance of the second electrode are both less than or equal to a preset first impedance threshold; the second contact condition is that the third impedance between the first electrode and the second electrode is greater than or equal to the preset second impedance threshold.

[0038] The first contact condition is used to determine whether the contact area between the user's hand and the first electrode, and between the user's hand and the second electrode, is large enough. The larger the contact area, the smaller the impedance. Therefore, the first impedance threshold can be determined in advance according to the required contact area, and whether the first contact condition is met is determined based on whether the first impedance of the first electrode and the second impedance of the second electrode are less than or equal to the first impedance threshold.

[0039] The second contact condition is used to determine whether the user's left and right hands are in contact with the first and second electrodes respectively. When the user's one hand is in contact with both the first and second electrodes simultaneously, the third impedance between the first and second electrodes is relatively small; when the user's left and right hands are in contact with the first and second electrodes respectively, the third impedance between the first and second electrodes is relatively large. Therefore, a second impedance threshold can be predetermined, and the satisfaction of the second contact condition can be determined based on whether the third impedance is greater than or equal to the second impedance threshold.

[0040] When fingerprint verification is successful, and both the first and second contact conditions are met simultaneously, the application runs. Then, the biosignal acquisition module acquires bioelectrical signals through the first and second electrodes. This avoids situations where the contact area between the user's hand and the first and / or second electrodes is too small, or where the user's hand is in contact with both electrodes simultaneously, leading to inaccurate bioelectrical signal detection.

[0041] In the specific judgment process, fingerprint signal verification can be performed first. If the verification is successful, it is determined whether the first contact condition is met. If the first contact condition is met, then it is determined whether the second contact condition is met.

[0042] Furthermore, the detection method also includes: displaying a prompt message to remind the user to maintain contact with the first and second electrodes. The prompt message can be displayed when the first contact condition is not met, or when the first contact condition is met but the second contact condition is not met, to remind the user to maintain contact with the first and second electrodes. The prompt message can also be displayed when both the first and second contact conditions are met simultaneously, to remind the user to continue maintaining contact, thereby improving detection stability. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 is a schematic diagram of the electronic device in the first embodiment of this application;

[0045] Figure 2 is a schematic diagram of the front structure of the electronic device in the first embodiment of this application;

[0046] Figure 3 is a schematic diagram of electrocardiogram detection using the electronic device shown in Figure 2;

[0047] Figure 4 is a side view of the electronic device shown in Figure 2;

[0048] Figure 5 is another side view of the electronic device shown in Figure 2;

[0049] Figure 6 is a schematic diagram of the first cross-sectional structure of a part of the electronic device shown in Figure 2;

[0050] Figure 7 is a schematic diagram of a second cross-sectional structure of a part of the electronic device shown in Figure 2;

[0051] Figure 8 is a schematic diagram of a third cross-sectional structure of a part of the electronic device shown in Figure 2;

[0052] Figure 9 is a schematic diagram of the fourth cross-sectional structure of a part of the electronic device shown in Figure 2;

[0053] Figure 10 is a schematic diagram of the fifth cross-sectional structure of a part of the electronic device shown in Figure 2;

[0054] Figure 11 is a third side view of the electronic device shown in Figure 2;

[0055] Figure 12 is a cross-sectional structural diagram of a portion of the electronic device shown in Figure 11;

[0056] Figure 13 is a fourth lateral view of the electronic device shown in Figure 2.

[0057] Figure 14 is a schematic diagram of the front structure of the electronic device in the second embodiment of this application;

[0058] Figure 15 is a schematic diagram of electrocardiogram detection using the electronic device shown in Figure 14.

[0059] Figure 16 is a side view of the electronic device shown in Figure 14;

[0060] Figure 17 is another side view of the electronic device shown in Figure 14;

[0061] Figure 18 is a schematic diagram of the front structure of the electronic device in the third embodiment of this application;

[0062] Figure 19 is a schematic diagram of the electronic device shown in Figure 18.

[0063] Figure 20 is a schematic diagram of electrocardiogram detection using the electronic device shown in Figure 18;

[0064] Figure 21 is a schematic diagram of the detection principle when an electronic device performs electrocardiogram detection.

[0065] Figure 22 is a side view of the electronic device shown in Figure 18;

[0066] Figure 23 is another side view of the electronic device shown in Figure 18;

[0067] Figure 24 is a front view of the electronic device in the fourth embodiment of this application;

[0068] Figure 25 is a schematic diagram of the rear structure of the electronic device shown in Figure 24;

[0069] Figure 26 is a front view of the electronic device in the fifth embodiment of this application;

[0070] Figure 27 is a front view of the electronic device in the sixth embodiment of this application;

[0071] Figure 28 is a schematic diagram of the rear structure of the electronic device shown in Figure 27;

[0072] Figure 29 is a front view of the electronic device in the seventh embodiment of this application;

[0073] Figure 30 is a schematic diagram of the electronic device shown in Figure 29;

[0074] Figure 31 is a schematic diagram of the physiological parameter detection principle of the embodiment shown in Figure 29;

[0075] Figure 32 is a side view of the electronic device shown in Figure 29;

[0076] Figure 33 is another side view of the electronic device shown in Figure 29;

[0077] Figure 34 is a flowchart illustrating the detection method for electronic devices;

[0078] Figure 35 is a schematic diagram of displaying prompt information on a display screen;

[0079] Figure 36 is another schematic diagram of displaying prompt information on the display screen.

[0080] Icons: 10-Fingerprint recognition module; 11-Substrate; 12-Fingerprint recognition module; 13-Fingerprint signal processing module; 20-First electrode; 21-First protrusion; 30-Second electrode; 31-Second protrusion; 40-Biosignal acquisition module; 41-Excitation source; 42-Voltmeter; 50-System-on-a-Chip (SoC); 60-Display screen; 70-Bezel; 73-Bezel segment; 731-First bezel segment; 732-Second bezel segment; 733-Third bezel segment; 734-Fourth bezel Frame segment; 74-Insulator; 75-First opening; 76-Second opening; 80-Flexible circuit board; 90-Second connecting layer; 100-Support part; 101-Bottom structure; 102-Side structure; 103-Through hole; 110-Power switch; 120-Encasing structure; 130-First connecting layer; 140-Air gap; 150-Sealing structure; 160-Volume button; 170-Third electrode; 180-Back cover; 190-Fourth electrode; 200-Pixel reading circuit. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0082] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item)" refers to one or more, while "more" refers to two or more. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0083] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0084] Terms such as “connected” and “linked” are used to express the interconnection or interaction between different components, which may include direct connection or indirect connection through other components. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion, such as including a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses. Terms such as “upper,” “lower,” “left,” and “right” are used only relative to the orientation of components in the accompanying drawings. These directional terms are relative concepts used for relative description and clarification, and may vary accordingly depending on the orientation of the components in the drawings.

[0085] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0086] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0087] To enhance the intelligence of terminal devices, more and more terminal devices are integrating biological detection systems. These systems can perform biological detection functions, obtain biological detection results, and provide early warnings about physical diseases based on these results.

[0088] Biometric testing here may include electrocardiography (ECG) testing. Electrocardiography (ECG) is a technology that uses an electrocardiograph to record the electrical activity of the heart, and it is widely used in medical monitoring and consumer applications to help users obtain their own physiological indicators such as heart rate and heart rate variability in a timely manner, and to provide early warning of heart diseases such as atrial fibrillation and arrhythmia.

[0089] Biometric testing can also include physiological parameter testing. After physiological parameter testing, the user's physiological parameters can be obtained, such as body fat, body protein, total body water, muscle mass, lean body mass, and mineral content. Based on these physiological parameters, a scientific and effective basis can be provided for the user's weight control, nutritional balance, disease diagnosis, and muscle training.

[0090] In related technologies, electrodes are typically integrated into the terminal device, allowing for direct biometric detection when the user's skin comes into contact with the electrodes. However, anyone can use the terminal device to perform biometric detection and view the results, thus posing a risk of leakage of personal health data.

[0091] Based on this, this application provides an electronic device. This electronic device can be, for example, a portable or mobile computing device such as a mobile phone, tablet computer, laptop computer, desktop computer, gaming device, in-vehicle electronic device, or wearable smart device, as well as other electronic devices such as electronic databases, automobiles, and bank ATMs. Wearable smart devices include devices that are fully functional, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as devices that focus on only a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring. In this embodiment, a mobile phone is used as an example for explanation.

[0092] As shown in Figure 1, the electronic device of this application embodiment includes a fingerprint recognition module 10, a first electrode 20, a second electrode 30, and a biosignal acquisition module 40.

[0093] The fingerprint recognition module 10 can be an ultrasonic fingerprint recognition module based on ultrasonic technology, an optical fingerprint recognition module based on optical technology, or a capacitive fingerprint recognition module based on capacitive technology. The fingerprint recognition module 10 can be used to acquire fingerprint signals.

[0094] As shown in Figures 1 and 2, the first electrode 20 is stacked on the outer side of the fingerprint recognition module 10. Here, "outer side" can refer to the side closer to the user when the user holds the electronic device. Thus, when the user's finger contacts the first electrode 20, the fingerprint recognition module 10 can collect the user's fingerprint signal.

[0095] As shown in Figure 2, the electronic device also includes a system-on-a-chip (SoC) 50 and a display screen 60. The fingerprint recognition module 10 can send fingerprint signals to the SoC 50 for fingerprint verification. If the verification is successful, it indicates that the user operating the electronic device is the user corresponding to the fingerprint stored in the electronic device, that is, the owner of the device or a user associated with the owner. If the verification fails, it indicates that the user operating the electronic device is not the user corresponding to the fingerprint stored in the electronic device.

[0096] As shown in Figure 2, the second electrode 30 is insulated from the first electrode 20. For example, the second electrode 30 and the first electrode 20 are isolated by an insulating structure.

[0097] As shown in Figure 1, the first electrode 20 and the second electrode 30 are electrically connected to the biosignal acquisition module 40, which can acquire bioelectrical signals through the first electrode 20 and the second electrode 30. These bioelectrical signals may include electrocardiogram (ECG) signals. Furthermore, since the first electrode 20 and the second electrode 30 form an electrode pair, and the biosignal acquisition module 40 can acquire one signal through this electrode pair, the bioelectrical signal can be a single-lead, single-channel signal.

[0098] Therefore, as shown in Figure 3, when a user uses the electronic device for electrocardiogram (ECG) testing, they can contact the second electrode 30 with their left hand and the first electrode 20 with their right hand. The biosignal acquisition module 40 can acquire ECG signals through the first electrode 20 and the second electrode 30 after successful fingerprint verification. Then, the biosignal acquisition module 40 can send the ECG signal to the system-on-a-chip (SoC) 50 shown in Figure 2. The SoC 50 then determines the user's health status based on the ECG signal and outputs ECG information on the display screen 60, thus allowing the user to understand their heart health status.

[0099] Therefore, the embodiments of this application can help users understand their own heart health status, while also ensuring that the user currently operating the electronic device is the user corresponding to the fingerprint stored in the electronic device, preventing other users from using the electronic device to perform electrocardiogram (ECG) testing and view ECG information, thereby improving the security of health data stored in the electronic device.

[0100] As shown in Figure 4, the electronic device also includes a frame 70. The frame 70 may include a first side (the side pointed to by arrow E, hereinafter referred to as first side E) and a second side (the side pointed to by arrow F, hereinafter referred to as second side F). In this embodiment, the first side E may be the right side, and the second side F may be the left side. In other embodiments, the first side E may be the left side, and the second side F may be the right side.

[0101] As shown in Figure 4, in this embodiment, the first electrode 20 and the second electrode 30 may both be disposed on the first side E of the frame 70. In other embodiments, the first electrode 20 and the second electrode 30 may both be disposed on the second side F of the frame 70.

[0102] When a user needs to use the electronic device, they place their right hand fingers on the first electrode 20. The fingerprint recognition module 10 integrated with the first electrode 20 can detect whether the user has permission to use the electronic device. That is, fingerprint verification is completed as a biometric feature. Furthermore, when the user's left and right hands are used together to detect the electrocardiogram (ECG) signal, accurate detection of the ECG signal can be achieved. Therefore, when a user needs to use the electronic device to detect the ECG signal, as shown in Figure 3, the electronic device can be placed horizontally, and the user can place their right hand fingers on the first electrode 20 while simultaneously placing their left hand on the second electrode 30 to achieve the recording and detection of a single-lead ECG signal.

[0103] Regarding the arrangement of the first electrode 20 on the frame 70, in one possible implementation, the first electrode 20 is part of the frame 70.

[0104] Specifically, in one example, as shown in Figure 4, the frame 70 is a one-piece conductive structure. That is, the frame 70 can be manufactured in one piece using methods such as die stamping. The first part of the conductive structure serves as the first electrode 20. Thus, when the frame 70 is completed, the first electrode 20 is also completed, eliminating the need for additional fabrication of the first electrode 20. Therefore, this saves on process steps.

[0105] In another example, as shown in Figure 5, the frame 70 can be a split structure. Specifically, the frame 70 includes multiple frame segments 73 and an insulator 74 located between two adjacent frame segments 73. The insulator 74 can be manufactured using injection molding. The first frame segment 731 among the multiple frame segments 73 serves as the first electrode 20. Thus, when the frame 70 is completed, the first electrode 20 is also completed, eliminating the need for additional fabrication of the first electrode 20. This saves on process steps.

[0106] Since the first electrode 20 needs to be conductive, it can be made of a conductive material. The conductive material can be, for example, a metallic material or a non-metallic material with conductive properties. Metallic materials can be, for example, Al alloys, titanium alloys, or stainless steel. Non-metallic materials with conductive properties can be, for example, conductive plastics or polymers.

[0107] Furthermore, when the first electrode 20 is made of metal or conductive plastic, the frame 70 shown in Figure 4 or the frame segment 73 shown in Figure 5, as well as the first electrode 20, can all be single-layer structures. When the first electrode 20 is made of conductive polymer material, the frame 70 shown in Figure 4 or the frame segment 73 shown in Figure 5, as well as the first electrode 20, can all be multi-layer structures.

[0108] As shown in Figure 4, a first protrusion 21 or a first recess can be provided on the side of the first electrode 20 away from the fingerprint recognition module 10. In this way, when the user touches the frame 70, the first protrusion 21 or the first recess can quickly and accurately locate the first electrode 20.

[0109] As shown in Figure 6, the fingerprint recognition module 10 includes a substrate 11, a fingerprint recognition module 12, and a fingerprint signal processing module 13. The substrate 11 can be a thin-film transistor (TFT) substrate, a Si substrate, or a flexible substrate. The fingerprint recognition module 12 and the fingerprint signal processing module 13 are disposed on the substrate 11. The fingerprint signal processing module 13 is electrically connected to the fingerprint recognition module 12. The fingerprint recognition module 12 can send signals to the finger touching the first electrode 20 and receive the returned signals. The fingerprint signal processing module 13 can acquire the returned signals received by the fingerprint recognition module 12, perform preprocessing (e.g., filtering, amplification, and analog-to-digital conversion), and then send the analog-to-digital converted signal to the system-on-a-chip 50 shown in Figure 2 for fingerprint verification.

[0110] As shown in Figure 6, the electronic device also includes a flexible printed circuit board (FPBC) 80 disposed on the substrate 11. The fingerprint signal processing module 13 is electrically connected to the flexible circuit board 80, and the biometric signal acquisition module 40 is also electrically connected to the flexible circuit board 80. The flexible circuit board 80 is also electrically connected to the system-on-a-chip 50 shown in Figure 2. Thus, the fingerprint signal processing module 13 can exchange signals with the system-on-a-chip 50 through the flexible circuit board 80, and the biometric signal acquisition module 40 can also exchange signals with the system-on-a-chip 50 through the flexible circuit board 80.

[0111] Regarding the placement of the fingerprint signal processing module 13, in one example, as shown in Figures 6 and 7, the fingerprint signal processing module 13 is disposed on the substrate 11. In another example, as shown in Figures 8 and 9, the fingerprint signal processing module 13 is disposed on the flexible circuit board 80. In this case, as shown in Figures 8 and 9, the electronic device also includes a pixel reading circuit 200 disposed on the substrate 11. The pixel reading circuit 200 is electrically connected to the fingerprint signal processing module 13, and can read fingerprint signals and send them to the fingerprint signal processing module 13.

[0112] Regarding the placement of the biosignal acquisition module 40, in one example, as shown in Figures 6 and 7, the biosignal acquisition module 40 is disposed on the substrate 11. In another example, as shown in Figures 8 and 9, the biosignal acquisition module 40 is disposed on the flexible circuit board 80.

[0113] Regarding the integration method of the fingerprint signal processing module 13 and the biosignal acquisition module 40, in one example, as shown in Figure 6, the fingerprint signal processing module 13 and the biosignal acquisition module 40 are integrated into the same chip. In another example, as shown in Figure 7, the fingerprint signal processing module 13 and the biosignal acquisition module 40 are integrated into different chips.

[0114] As shown in Figure 6, the electronic device also includes a second connection layer 90, which can be an adhesive layer. The second connection layer 90 connects the substrate 11 and the first electrode 20, that is, the fingerprint recognition module 12 is disposed on the side of the substrate 11 away from the first electrode 20. In this way, the substrate 11 is directly connected to the first electrode 20, which can improve the flatness of the connection. Moreover, when the fingerprint recognition module 10 is an ultrasonic fingerprint recognition module, it is beneficial to the propagation of ultrasonic waves.

[0115] Alternatively, as shown in Figure 10, the second connection layer 90 is connected between the fingerprint recognition module 12 and the first electrode 20, that is, the substrate 11 is disposed on the side of the fingerprint recognition module 12 away from the first electrode 20.

[0116] Furthermore, the second connection layer 90 can be a conductive connection layer. Thus, as shown in FIG6, the first electrode 20 can be electrically connected to the biosignal processing module 40 disposed within the substrate 11 via the second connection layer 90 and the substrate 11. In a specific implementation, in one example, the second conductive layer 90 is entirely conductive; for example, the second connection layer 90 includes conductive adhesive. In another example, a portion of the second connection layer 90 is conductive; for example, the second connection layer 90 includes an insulating connection structure and a conductive portion, with the conductive portion disposed within the insulating connection structure.

[0117] Regarding the arrangement of the first electrode 20 on the frame 70, in another possible implementation, the first electrode 20 is an independent button located on the frame 70.

[0118] Specifically, as shown in Figure 11, the frame 70 has a first opening 75, which is an annular opening. The first electrode 20 protrudes from the first opening 75 and has a gap between it and the side wall of the first opening 75. In this way, the first electrode 20 is an independent button, which makes it convenient for the user to quickly locate the first electrode 20 during use.

[0119] As shown in Figure 12, the electronic device also includes a support portion 100 and a power switch 110 fixed within the frame 70. The first electrode 20 and the fingerprint recognition module 10 can both be fixed to the support portion 100. The support portion 100 is positioned opposite the power switch 110, and the support portion 100 is used to move towards the power switch 110 and act on the power switch 110 when pressed by the first electrode 20. Therefore, when the user presses the first electrode 20, the support portion 100 can move towards the power switch 110 under the action of the first electrode 20 and act on the power switch 110, that is, contact and press the power switch 110, thereby illuminating the display screen 60. Thus, the first electrode 20 and the fingerprint recognition module 10 can serve as a power button. In other words, in this application, the first electrode 20, the fingerprint recognition module 10, and the power button are integrated, thereby improving the integration of the button and simplifying the structure of the electronic device.

[0120] Furthermore, as shown in Figure 12, the electronic device also includes a stacked covering structure 120 and a first connecting layer 130. The covering structure 120 is disposed on the surface of the first electrode 20 facing the fingerprint recognition module 10 and covers the side surface of the fingerprint recognition module 10. Thus, the covering structure 120 can provide protection for the fingerprint recognition module 10. The covering structure 120 can be made of a polymer material, and it can be manufactured by injection molding.

[0121] As shown in Figure 12, the side of the support portion 100 facing away from the fingerprint recognition module 10 faces the power switch 110, and an air gap 140 is formed between the support portion 100 and the fingerprint recognition module 10. When the fingerprint recognition module 10 is an ultrasonic fingerprint recognition module 10, it will vibrate during the fingerprint signal acquisition process. The air gap 140 formed between the support portion 100 and the fingerprint recognition module 10 can provide sufficient space for the vibration of the fingerprint recognition module 10, avoiding affecting the resonant frequency of the fingerprint recognition module 10, thereby improving the recognition accuracy.

[0122] As shown in Figure 12, the support portion 100 includes a bottom structure 101 disposed on the side of the first connecting layer 130 opposite to the covering structure 120, and a side structure 102 disposed on the bottom structure 101. The side structure 102 has a through hole 103. The electronic device also includes a flexible circuit board 80 and a sealing structure 150. The flexible circuit board 80 is connected to the fingerprint recognition module 10. The flexible circuit board 80 can pass through the through hole 103. The sealing structure 150 fills the through hole 103 and is located between the flexible circuit board 80 and the sidewall of the through hole 103. Therefore, the sealing structure 150 provides a buffer for the installation of the flexible circuit board 80 on the support portion 100, thereby protecting the flexible circuit board 80.

[0123] Regarding the arrangement of the second electrode 30 on the frame 70, in one possible implementation, the second electrode 30 is part of the frame 70.

[0124] Specifically, in one example, as shown in Figure 4, the frame 70 is a one-piece conductive structure. That is, the frame 70 can be manufactured in one piece using methods such as die stamping. The second part of the conductive structure serves as the second electrode 30. Thus, when the frame 70 is completed, the second electrode 30 is also completed, eliminating the need for additional fabrication of the second electrode 30. Therefore, this saves on process steps.

[0125] In another example, as shown in Figure 5, the frame 70 can be a split structure. Specifically, the frame 70 includes multiple frame segments 73 and an insulator 74 located between two adjacent frame segments 73. The second frame segment 732 among the multiple frame segments 73 serves as the second electrode 30. In this way, the second electrode 30 is also completed when the frame 70 is manufactured, without the need to manufacture the second electrode 30 separately. This saves on the manufacturing process.

[0126] Since the second electrode 30 needs to be conductive, it can be made of a conductive material. The conductive material can be, for example, a metal or a non-metallic material with conductive properties. Metallic materials can be, for example, Al alloys, titanium alloys, or stainless steel. Non-metallic materials with conductive properties can be, for example, conductive plastics or polymers.

[0127] Furthermore, when the second electrode 30 is made of a metal material or a conductive plastic, the frame 70 shown in Figure 4 or the frame segment 73 shown in Figure 5, as well as the second electrode 30, can all be a single-layer structure. When the second electrode 30 is made of a conductive polymer material, the frame 70 shown in Figure 4 or the frame segment 73 shown in Figure 5, as well as the second electrode 30, can all be a multi-layer structure.

[0128] As shown in Figure 4, a second protrusion 31 or a second recess can be provided on the outer side of the second electrode 30. In this way, when the user touches the frame 70, the second protrusion 31 or the second recess can quickly and accurately locate the second electrode 30.

[0129] Regarding the arrangement of the second electrode 30 on the frame 70, in another possible implementation, the second electrode 30 is an independent button located on the frame 70.

[0130] Specifically, as shown in Figure 13, a second opening 76 is provided on the frame 70, through which the second electrode 30 is exposed. The electronic device also includes a volume button 160. In one example, the second electrode 30 is stacked on the outside of the volume button 160. In another example, the second electrode 30 serves as the volume button 160. Thus, the volume button 160 and the second electrode 30 can be integrated, thereby improving the integration of the button and simplifying the structure of the electronic device.

[0131] In other embodiments of this application, the difference from the embodiment shown in FIG2 lies in the positional relationship between the first electrode 20 and the second electrode 30. Specifically, in this embodiment, as shown in FIG14, the first electrode 20 is disposed on the first side E of the frame 70, and the second electrode 30 is disposed on the second side F of the frame 70, with the first side E and the second side F opposite to each other. That is, the first electrode 20 and the second electrode 30 are respectively disposed on opposite sides of the frame 70. For example, the first electrode 20 is disposed on the right side of the frame 70, and the second electrode 30 is disposed on the left side of the frame 70. Thus, as shown in FIG15, the user can hold the phone with their left hand, and the left hand is in contact with the second electrode 30. At the same time, the fingers of the right hand are placed on the first electrode 20. This holding method is more in line with the user's daily holding habits, increases the stability of the detection process, and improves the user experience.

[0132] Furthermore, as shown in Figure 15, when a user holds the phone with their left hand, the left thumb can be positioned in the middle of the frame 70, and the thenar eminence of the left hand can be positioned near the bottom of the frame 70 (the side pointed to by arrow G, referred to as the bottom G). Therefore, in order to increase the contact area with the second electrode 30, in some embodiments of this application, the second electrode 30 is closer to the bottom G of the frame 70 than the first electrode 20. Thus, when the user holds the phone with their left hand, the thenar eminence of the left hand contacts the second electrode 30. On the one hand, this increases the contact area between the left hand and the second electrode 30, reducing impedance. On the other hand, this holding posture is ergonomic, thereby increasing the stability of the detection process.

[0133] Furthermore, as shown in Figure 14, since the volume button 160 is usually located on the first side E of the frame 70 and the second electrode 30 is located on the second side F of the frame 70, the second electrode 30 does not need to have a pressable function. Therefore, in order to simplify the structure and manufacturing process, the second electrode 30 can be part of the frame 70.

[0134] For example, as shown in Figure 16, when the frame 70 is an integrally formed conductive structure, a portion of the frame 70 can form the second electrode 30. Or, as shown in Figure 17, when the frame 70 includes multiple frame segments 73 and an insulator 74 disposed between two adjacent frame segments 73, the second frame segment 732 among the multiple frame segments 73 serves as the second electrode 30.

[0135] In other embodiments of this application, the difference from the embodiment shown in FIG2 is that the electronic device further includes a third electrode 170 in addition to the embodiment shown in FIG2. That is, as shown in FIG18 and FIG19, the electronic device includes a first electrode 20, a second electrode 30 and a third electrode 170, wherein the first electrode 20, the second electrode 30 and the third electrode 170 are all electrically connected to the biosignal acquisition module 40.

[0136] As shown in Figure 18, the first electrode 20 and the second electrode 30 are located on the first side E of the frame 70, and the third electrode 170 is located on the second side F of the frame 70. In other embodiments, the first electrode 20 and the second electrode 30 may be located on the second side F of the frame 70, and the third electrode 170 may be located on the first side E of the frame 70. Alternatively, the first electrode 20 and the third electrode 170 may be located on the first side E of the frame 70, and the second electrode 30 may be located on the second side F of the frame 70, etc.

[0137] As shown in Figure 20, during electrocardiogram (ECG) testing, the user can place their left hand on the second electrode 30, their right hand on the first electrode 20, and the third electrode 170 on their lower limb, such as their leg, thus forming the Eintofen triangle. Each electrode is paired with the other for measurement. Specifically, as shown in Figure 21, for ease of distinction, the first electrode 20 can be named the right finger electrode (RA), the second electrode 30 the left finger electrode (LA), and the third electrode 170 the left calf electrode (LL). The right finger electrode (RA) and the left finger electrode (LA) form the first electrode pair, the right finger electrode (RA) and the left calf electrode (LL) form the second electrode pair, and the left finger electrode (LA) and the left calf electrode (LL) form the third electrode pair. In other words, the first electrode 20, the second electrode 30, and the third electrode 170 form three electrode pairs, or a three-lead structure.

[0138] The biosignal acquisition module 40 can acquire the first electrical signal leadⅠ as shown in Figure 21 through the first electrode pair, the second electrical signal leadⅡ as shown in Figure 21 through the second electrode pair, and the third electrical signal leadⅢ as shown in Figure 21 through the third electrode pair.

[0139] The biosignal acquisition module 40 can also generate a fourth electrical signal aVR based on the first electrical signal and the second electrical signal. The first electrical signal leadⅠ, the second electrical signal leadⅡ and the fourth electrical signal aVR satisfy the following expression: aVR=(leadⅠ+leadⅡ) / 2.

[0140] The biosignal acquisition module 40 can also generate a fifth electrical signal aVL based on the first electrical signal and the third electrical signal. The first electrical signal leadⅠ, the third electrical signal leadⅢ, and the fifth electrical signal aVL satisfy the following expression: aVL=(leadⅠ-leadⅢ) / 2.

[0141] The biosignal acquisition module 40 can also generate a sixth electrical signal aVF based on the second and third electrical signals. The second electrical signal leadⅡ, the third electrical signal leadⅢ, and the sixth electrical signal aVF satisfy the following expression: aVF=(leadⅡ+leadⅢ) / 2.

[0142] This allows the acquisition of bioelectrical signals including the first electrical signal (leadⅠ), the second electrical signal (leadⅡ), the third electrical signal (leadⅢ), the fourth electrical signal (aVR), the fifth electrical signal (aVL), and the sixth electrical signal (aVF). Since the bioelectrical signals comprise six signals, in this case, they can be a 3-lead, 6-channel electrocardiogram (ECG) signal. That is, the biosignal acquisition module 40 can acquire a 3-lead, 6-channel ECG signal, and the system-on-a-chip 50 can then assess the user's cardiac health based on this signal. Furthermore, the 3-lead, 6-channel ECG signal provides more detailed and informative ECG data, thus better enabling the detection of risk information such as atrial fibrillation, bradycardia, and tachycardia.

[0143] As shown in Figure 22, when the frame 70 is an integrally formed conductive structure, the third electrode 170 can be part of the conductive structure. As shown in Figure 23, when the frame 70 includes multiple frame segments 73 and an insulator 74 located between two adjacent frame segments 73, the third frame segment 733 among the multiple frames 70 can serve as the third electrode 170.

[0144] In other embodiments of this application, the difference from the embodiment shown in FIG18 lies in the different placement of the third electrode 170. Specifically, as shown in FIG24 and FIG25, the electronic device further includes a rear housing 180, on which the third electrode 170 is disposed. Since the rear housing 180 has a larger area, when the third electrode 170 is disposed on the rear housing 180, the area of ​​the third electrode 170 can be increased. The user can use their lower limbs, such as the calf or knee, to contact the third electrode 170, thereby increasing the contact area between the third electrode 170 and the user's skin, resulting in better electrical contact and contact stability, and thus increasing detection stability.

[0145] In other embodiments of this application, the difference from the embodiment shown in FIG24 is that the types of electronic devices are different and the positional relationship between the first electrode 20, the second electrode 30 and the third electrode 170 is different.

[0146] Specifically, as shown in Figure 26, in this embodiment, the electronic device can be a tablet computer. The first electrode 20 is located on the first side E of the frame 70, the second electrode 30 is located on the second side F of the frame 70, and the third electrode 170 is located at the bottom G of the frame 70. In other embodiments, the third electrode 170 can be located at the top of the frame 70. Thus, when the electronic device is held by both hands, the left hand can contact the second electrode 30, the right hand can contact the first electrode 20, and the user's lower limbs, such as the calf or knee, can contact the third electrode 170.

[0147] Similar to the previous embodiments, the first electrode 20 may be part of the frame 70, or a button independent of the frame 70 and integrated with the electrode key. The second electrode 30 may be part of the frame 70, or a button independent of the frame 70 and integrated with the volume button 160. Further details will not be provided here.

[0148] In other embodiments of this application, the difference from the embodiment shown in FIG24 is that the type of electronic device is different and a fourth electrode 190 is added based on the embodiment shown in FIG24.

[0149] Specifically, as shown in Figure 27, in this embodiment, the electronic device is a watch. The electronic device may include a first electrode 20, a second electrode 30, a third electrode 170, and a fourth electrode 190. The first electrode 20, second electrode 30, third electrode 170, and fourth electrode 190 are all electrically connected to the biosignal acquisition module 40. Furthermore, in this embodiment, the first electrode 20 is located on the first side E of the frame 70, and the second electrode 30 is located on the second side F of the frame 70. As shown in Figure 28, the third electrode 170 and the fourth electrode 190 are spaced apart on the back cover 180.

[0150] In one example, the biosignal acquisition module 40 acquires bioelectrical signals via a first electrode 20, a second electrode 30, and a third electrode 170. In another example, the biosignal acquisition module 40 acquires bioelectrical signals via a first electrode 20, a second electrode 30, and a fourth electrode 190. In this example, the fourth electrode 190 functions the same as the third electrode 170 in the aforementioned example. Since the back case 180 of the watch in the related art has two electrodes, which can respectively serve as the third electrode 170 and the fourth electrode 190, the biosignal acquisition module 40 can select one electrode from the third electrode 170 and the fourth electrode 190 as the third electrode in addition to the first electrode 20 and the second electrode 30, to jointly acquire bioelectrical signals with the first electrode 20 and the second electrode 30. Here, the bioelectrical signal is also an electrocardiogram (ECG) signal. Furthermore, the structure of the watch back case 180 in the related art can be directly utilized without modifying the structure of the back case 180.

[0151] In other embodiments of this application, the difference from the embodiment shown in FIG18 is that a fourth electrode 190 is added to the embodiment shown in FIG18. As shown in FIG29, the first electrode 20 and the second electrode 30 are located on the first side E of the frame 70, and the third electrode 170 and the fourth electrode 190 are located on the second side F of the frame 70.

[0152] As shown in Figure 30, the biosignal acquisition module 40 can acquire bioelectrical signals through the first electrode 20, the second electrode 30, the third electrode 170, and the fourth electrode 190. Here, the bioelectrical signals may include physiological parameter signals. That is, the biosignal acquisition module 40 can acquire physiological parameter signals, thereby facilitating the transmission of these signals to the system-on-a-chip 50. The system-on-a-chip 50 analyzes the physiological parameter signals and obtains physiological parameters such as body fat, body protein, total body water, muscle mass, lean body mass, and mineral content, providing a scientific and effective basis for users' weight control, nutritional balance, disease diagnosis, and muscle training.

[0153] During the actual test, two fingers of the user's right hand can contact the first electrode 20 and the fourth electrode 190 respectively, and two fingers of the left hand can contact the second electrode 30 and the third electrode 170 respectively. As shown in Figure 31, the biosignal acquisition module 40 may include an excitation source 41 and a voltmeter 42. The two ends of the excitation source 41 are electrically connected to the first electrode 20 and the fourth electrode 190 respectively, and the two ends of the voltmeter 42 are electrically connected to the second electrode 30 and the third electrode 170 respectively. The excitation source 41 applies a weak alternating current signal between the first electrode 20 and the fourth electrode 190, and the voltmeter 42 detects the voltage signal between the second electrode 30 and the third electrode 170. Physiological parameter signals can be calculated based on the voltage signal. This is more in line with the user's holding habit when holding a mobile phone with both hands, and the grip is more stable, thereby improving contact stability and detection stability.

[0154] In this embodiment, as shown in FIG32, when the frame 70 is an integrally formed conductive structure, both the third electrode 170 and the fourth electrode 190 can be part of the conductive structure. As shown in FIG33, when the frame 70 includes multiple frame segments 73 and an insulator 74 located between two adjacent frame segments 73, the third frame segment 733 among the multiple frame segments 70 can serve as the third electrode 170. The fourth frame segment 734 among the multiple frame segments 73 can serve as the fourth electrode 190.

[0155] This application also provides a detection method applied to the electronic device shown in FIG2.

[0156] As shown in Figure 34, the detection method may include: S201, the fingerprint recognition module acquires fingerprint signals.

[0157] When a user's finger touches the first electrode, the fingerprint recognition module can collect the user's fingerprint signal. The fingerprint signal is then preprocessed and sent to the system-on-a-chip (SoC) for fingerprint verification.

[0158] S202, determine whether fingerprint verification was successful.

[0159] If not, proceed to step S203 to keep the screen locked. If the verification fails, it indicates that the fingerprint of the user currently using the electronic device does not match the fingerprint stored in the electronic device, and the screen can remain locked.

[0160] If so, proceed to step S204 to unlock the screen. If the verification is successful, it indicates that the fingerprint of the user currently using the electronic device matches the fingerprint stored in the electronic device, and the screen can be unlocked.

[0161] S205, determine whether the first contact condition is met.

[0162] When an electronic device includes a first electrode and a second electrode, the first contact condition is that the first impedance of the first electrode and the second impedance of the second electrode are both less than or equal to a preset first impedance threshold. The first contact condition can be used to determine whether the contact between the user's hand and the first electrode, and between the user's hand and the second electrode, is tight; it can also be understood as whether the contact area is large enough. The tighter the contact, the smaller the impedance. Therefore, the first impedance threshold can be predetermined, and the satisfaction of the first contact condition can be determined based on whether the first impedance of the first electrode and the second impedance of the second electrode are less than or equal to the first impedance threshold.

[0163] When the electronic device includes a first electrode, a second electrode, and a third electrode, the first contact condition is that the first impedance of the first electrode, the second impedance of the second electrode, and the third impedance of the third electrode are all less than or equal to a preset first impedance threshold.

[0164] When the electronic device includes a first electrode, a second electrode, a third electrode, and a fourth electrode, the first contact condition is that the first impedance of the first electrode, the second impedance of the second electrode, the third impedance of the third electrode, and the fourth impedance of the fourth electrode are all less than or equal to a preset first impedance threshold.

[0165] If not, proceed to step S206 and display a prompt message.

[0166] Since the application is not yet running, as shown in Figure 35, the prompt message 'a' can be displayed in text form. For example, prompt message 'a' could include phrases such as: 'Please maintain good contact with the first and second electrodes.'

[0167] If so, proceed to step S207 to determine whether the second contact condition is met.

[0168] In this embodiment, when the electronic device includes a first electrode and a second electrode, the second contact condition is that the third impedance between the first electrode and the second electrode is greater than or equal to a preset second impedance threshold. The second contact condition can be used to determine whether the user's left and right hands are in contact with the first and second electrodes respectively. When one of the user's hands is in contact with both the first and second electrodes simultaneously, the third impedance between the first and second electrodes is relatively small; when the user's left and right hands are in contact with the first and second electrodes respectively, the third impedance between the first and second electrodes is relatively large. Therefore, the second impedance threshold can be predetermined, and the satisfaction of the second contact condition can be determined based on whether the third impedance is greater than or equal to the second impedance threshold.

[0169] When the electronic device includes a first electrode, a second electrode, and a third electrode, the second contact condition is whether the third impedance between the first electrode and the second electrode, the fourth impedance between the first electrode and the third electrode, and the fifth impedance between the second electrode and the third electrode are all greater than or equal to the second impedance threshold.

[0170] If not, proceed to step S208 and display a prompt message.

[0171] Since the application is not yet running, as shown in Figure 35, the prompt message 'a' can be displayed in text form. For example, prompt message 'a' could include phrases such as: 'Please maintain good contact with the first and second conductive layers.'

[0172] If so, proceed to step S209 to run the application.

[0173] This application can be a health monitoring application that displays electrocardiograms, etc., such as a "sports and health application (APP)".

[0174] S210, the biosignal acquisition module acquires bioelectrical signals through the first electrode and the second electrode.

[0175] The biosignal acquisition module can acquire bioelectrical signals over a period of time t, where t can be 30s.

[0176] S211, Generate biometric detection results and display them on the application. The biometric detection results may include at least one of electrocardiogram, health status information, and health reminder information.

[0177] After acquiring bioelectric signals, the biosignal acquisition module can perform preprocessing, such as filtering, amplification, and analog-to-digital conversion. Then, the analog-to-digital converted signal is sent to the system-on-a-chip (SoC), which generates an electrocardiogram, health status information, and health reminder information, which are then displayed on the application.

[0178] Therefore, this application can help users understand their own heart health status, while also ensuring that the user currently operating the electronic device is the user corresponding to the fingerprint stored in the electronic device, thus preventing other users from using the electronic device to perform electrocardiogram (ECG) testing and view ECG information, thereby improving the security of health data stored in the electronic device.

[0179] Furthermore, when fingerprint verification is successful and both the first and second contact conditions are met, the application runs. Then, the biosignal acquisition module acquires bioelectrical signals through the first and second electrodes. This avoids situations where the contact area between the user's hand and the first and / or second electrodes is small, or where the user's hand is in contact with both electrodes simultaneously, leading to inaccurate bioelectrical signal detection.

[0180] Furthermore, during the detection process, a prompt message b, as shown in Figure 36, can be displayed. Prompt message b is used to remind the user to maintain contact with the first and second electrodes, and how to maintain contact between them. For example, prompt message b can include both text and image information. The text information may include phrases such as "Please maintain contact between your right hand and the first conductive layer, and between your left hand and the second conductive layer, as shown in the diagram below," while the image information demonstrates how the left and right hands should contact the first and second electrodes. This prompts the user to continue maintaining good contact, thereby improving detection stability.

[0181] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

An electronic device, characterized in that, include: A fingerprint recognition module, wherein the fingerprint recognition module is used to collect fingerprint signals; The first electrode is stacked on the outside of the fingerprint recognition module; The second electrode is insulated from the first electrode. A biosignal acquisition module, wherein the first electrode and the second electrode are electrically connected to the biosignal acquisition module, and the biosignal acquisition module acquires bioelectrical signals through the first electrode and the second electrode. The electronic device according to claim 1, characterized in that, The electronic device further includes a third electrode, which is electrically connected to the biosignal acquisition module; The biosignal acquisition module acquires the bioelectrical signals through the first electrode, the second electrode, and the third electrode. The electronic device according to claim 2, characterized in that, The electronic device further includes a fourth electrode, which is electrically connected to the biosignal acquisition module. The biosignal acquisition module acquires the bioelectrical signals through the first electrode, the second electrode, and the third electrode and / or the fourth electrode. The electronic device according to any one of claims 1-3 is characterized in that, The electronic device also includes a frame, and the first electrode and the second electrode are located on the same side of the frame. The electronic device according to any one of claims 1-3 is characterized in that, The electronic device further includes a frame, with the first electrode disposed on a first side of the frame and the second electrode disposed on a second side of the frame, the first side being opposite to the second side. The electronic device according to claim 5, characterized in that, The second electrode is closer to the bottom of the frame than the first electrode. The electronic device according to any one of claims 4-6 is characterized in that, A protrusion or a recess is provided on the side of the first electrode that is away from the fingerprint recognition module; And / or, a protrusion or a recess is provided on the side of the second electrode opposite to the fingerprint recognition module. The electronic device according to claim 2, characterized in that, The electronic device also includes a frame and a back cover; The third electrode is disposed on the frame and on a different side from the first electrode and the second electrode; or, the third electrode is disposed on the rear shell. The electronic device according to claim 3, characterized in that, The electronic device also includes a frame and a back cover; The fourth electrode is disposed on the frame; or, the fourth electrode and the third electrode are disposed on the rear shell at intervals. The electronic device according to any one of claims 4-6, 8 or 9 is characterized in that, The border includes multiple border segments and an insulator located between two adjacent border segments; The first frame segment of the plurality of frame segments serves as the first electrode, and / or the second frame segment of the plurality of frame segments serves as the second electrode. The electronic device according to any one of claims 4-6, 8 or 9 is characterized in that, The frame is a one-piece molded conductive structure; The first portion of the conductive structure serves as the first electrode, and / or the second portion of the conductive structure serves as the second electrode. The electronic device according to any one of claims 4-6, 8 or 9 is characterized in that, The frame has a first opening, through which the first electrode is exposed. The electronic device according to claim 12, characterized in that, The electronic device further includes a support portion and a power switch fixed within the frame. The first electrode is fixed to the support portion, the support portion is disposed opposite to the power switch, and the support portion is used to move toward the power switch and act on the power switch when pressed by the first electrode. The electronic device according to claim 13, characterized in that, The electronic device further includes a stacked covering structure and a first connecting layer. The covering structure is disposed on the surface of the first electrode facing the fingerprint recognition module and covers the side of the fingerprint recognition module. The side of the support portion away from the fingerprint recognition module faces the power switch. An air gap is formed between the support portion and the fingerprint recognition module. The electronic device according to claim 14, characterized in that, The support portion includes a bottom structure disposed on the side of the first connecting layer opposite to the covering structure and a side structure disposed on the bottom structure, wherein the side structure is provided with a through hole; The electronic device also includes a flexible circuit board and a sealing structure, wherein the flexible circuit board is connected to the fingerprint recognition module and passes through the through hole; The sealing structure fills the through hole and is located between the flexible circuit board and the sidewall of the through hole. The electronic device according to any one of claims 4-15 is characterized in that, The electronic device also includes volume keys; A second opening is provided on the frame, and the second electrode is exposed from the second opening; The second electrode is stacked on the outside of the volume key; or, the second electrode serves as the volume key. The electronic device according to any one of claims 1-16 is characterized in that, The electronic device further includes a second connection layer and a substrate, and the fingerprint recognition module is disposed on the substrate; The second connection layer is connected between the substrate and the first electrode; or, the second connection layer is connected between the fingerprint recognition module and the first electrode. A detection method, characterized in that, Applied to electronic devices, the electronic devices include a fingerprint recognition module, a first electrode, a second electrode, and a biosignal acquisition module; The detection method includes: The fingerprint recognition module collects fingerprint signals; If the fingerprint signal verification is successful, run the application; The biosignal acquisition module acquires bioelectrical signals through the first electrode and the second electrode; Generate biological detection results and display them on the application. The detection method according to claim 18 is characterized in that, If the fingerprint signal verification is successful, the application will run, including: If the fingerprint signal verification is successful and the first contact condition and the second contact condition are met, the application will run. The first contact condition is that the first impedance of the first electrode and the second impedance of the second electrode are both less than or equal to a preset first impedance threshold. The second contact condition is that the third impedance between the first electrode and the second electrode is greater than or equal to a preset second impedance threshold.

Images