A detection method and electronic device

Abstract

The present application discloses a detection method and an electronic device, belonging to the field of touch technology. The electronic device comprises a display module, an ultrasonic fingerprint sensor and a pressure sensor, the ultrasonic fingerprint sensor comprises a piezoelectric layer, the piezoelectric layer is attached to the bottom of the display module, the pressure sensor comprises a receiving unit, the receiving unit is electrically connected to the piezoelectric layer, the piezoelectric layer emits an ultrasonic wave when the electronic device is in a fingerprint recognition mode, and generates a pressure signal when the electronic device is in a pressure detection mode.

Description

Technical Field

[0001] The present application belongs to the field of touch technology, and specifically relates to a detection method and an electronic device. Background Art

[0002] With the rapid development of mobile terminal technology, under-screen fingerprint recognition has become an important development direction of fingerprint recognition technology. Under-screen optical fingerprint technology is becoming increasingly mature, and ultrasonic fingerprint technology is also gradually being used. Ultrasonic fingerprint technology has the advantages of fast entry, fast unlocking, security and accuracy. At the same time, the under-screen pressure button technology of the terminal has been widely used, improving the user experience in scenarios such as gaming.

[0003] However, due to the overlap between the ultrasonic fingerprint recognition position and the under-screen pressure button setting position, there is a conflict between the two in structure and function. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a detection method and an electronic device that can solve the problem in the related art that the recognition position of the ultrasonic fingerprint and the setting position of the under-screen pressure button overlap, and the two have conflicts in structure and function.

[0005] In a first aspect, an embodiment of the present application provides an electronic device, the electronic device comprising:

[0006] A display module, an ultrasonic fingerprint sensor and a pressure sensor, wherein the ultrasonic fingerprint sensor includes a piezoelectric layer, the piezoelectric layer is adhered to the bottom of the display module, the pressure sensor includes a receiving unit, the receiving unit is electrically connected to the piezoelectric layer, the piezoelectric layer emits ultrasonic waves when the electronic device is in a fingerprint recognition mode, and generates a pressure signal when the electronic device is in a pressure detection mode.

[0007] In a second aspect, an embodiment of the present application provides a detection method, which is applied to the electronic device as described in the first aspect, and the method includes:

[0008] When it is detected that the electronic device is in a fingerprint recognition mode, controlling the piezoelectric layer to emit ultrasonic waves, and using the ultrasonic fingerprint sensor to obtain a fingerprint pressed on the display module;

[0009] When it is detected that the electronic device is in a pressure detection mode, a pressure signal is generated according to the deformation of the piezoelectric layer, and the pressure applied to the display module is acquired by using the pressure sensor.

[0010] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0011] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0012] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the second aspect.

[0013] In a sixth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the second aspect.

[0014] In an embodiment of the present application, by connecting the piezoelectric layer of the ultrasonic fingerprint sensor to the receiving unit of the pressure sensor, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can also generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic top view of an electronic device provided in an embodiment of the present application;

[0016] Figure 2 A cross-sectional schematic diagram of an electronic device provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of pressure transmission provided in an embodiment of the present application;

[0018] Figure 4 A schematic diagram of a pressure detection principle provided in an embodiment of the present application;

[0019] Figure 5 One of the flow charts of a detection method provided in an embodiment of the present application;

[0020] Figure 6 A second flow chart of a detection method provided in an embodiment of the present application;

[0021] Figure 7 A schematic diagram of the structure of a detection device provided in an embodiment of the present application;

[0022] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0023] Fig. 9 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] The detection method and electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0027] On one hand, an embodiment of the present application provides an electronic device, which includes a display module, an ultrasonic fingerprint sensor and a pressure sensor, wherein the ultrasonic fingerprint sensor includes a piezoelectric layer, which is attached to the bottom of the display module, and the pressure sensor includes a receiving unit, which is electrically connected to the piezoelectric layer. The piezoelectric layer can emit ultrasonic waves when the electronic device is in a fingerprint recognition mode. At this time, the fingerprint recognition function of the ultrasonic fingerprint sensor can be normally realized, and when the electronic device is in a pressure detection mode, the piezoelectric layer can generate a pressure signal according to the pressure received, and the pressure detection function of the pressure sensor can be normally realized. That is to say, in the embodiment of the present application, the piezoelectric layer of the ultrasonic fingerprint sensor is reused as a detection component of the pressure sensor, that is, equivalent to a capacitor. When the electronic device is in a pressure detection mode, if the piezoelectric layer is pressed by the outside world, it will be deformed, thereby causing its capacitance value to change, and then the pressure detection is realized according to the change of the capacitance value. In the fingerprint recognition mode, the electronic device needs to obtain the fingerprint information pressed on the display module, and in the pressure detection mode, the electronic device needs to obtain the pressure information pressed on the display module. The piezoelectric layer is used as a part of the structure of the ultrasonic fingerprint sensor, that is, the structure for emitting ultrasonic waves, and also as a part of the structure of the pressure sensor, that is, the structure for pressure detection, to achieve multiplexing.

[0028] Therefore, in the embodiment of the present application, by connecting the piezoelectric layer of the ultrasonic fingerprint sensor to the receiving unit of the pressure sensor, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can also generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0029] In some embodiments of the present application, the display module may be an OLED display module, OLED, namely Organic Light-Emitting Diode, is also known as organic laser display, organic light-emitting semiconductor. OLED display module has the advantages of low power consumption, fast response speed, wide viewing angle, high-resolution display, soft screen, etc.

[0030] In some embodiments of the present application, the ultrasonic fingerprint sensor can perform ultrasonic scanning and imaging of object signatures such as fingerprints, palm prints or hand prints. The ultrasonic fingerprint sensor generates ultrasonic waves through the piezoelectric layer, and the ultrasonic waves can be emitted to one side of the display module, and reflected back after encountering the finger pressed on the display module, and then a corresponding electrical signal is generated according to the reflected ultrasonic wave, and finally a fingerprint image is generated according to the generated electrical signal, thereby realizing the fingerprint recognition function.

[0031] In some embodiments of the present application, the pressure sensor can detect the pressure applied by an object pressing on a target area on the display module. The piezoelectric layer is used as the detection component of the pressure sensor, which is equivalent to a capacitor. When the target area on the display module is subjected to pressure, the piezoelectric layer is deformed by the force, which in turn causes the capacitance value of the equivalent capacitor to change. Therefore, the magnitude of the pressure can be determined based on the change in the capacitance value, thereby realizing the pressure detection function.

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic top view of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 2 This is a cross-sectional schematic diagram of an electronic device provided in an embodiment of the present application. Figure 1 and Figure 2 As shown, in some embodiments of the present application, the ultrasonic fingerprint sensor is arranged below the display module (i.e., the other side of the display module opposite to the display surface), and the ultrasonic fingerprint sensor can be fixedly connected to the display module by bonding or the like. Optionally, the display module includes a screen 111, a first flexible circuit board 112, and a cover plate 113, the cover plate 113 covers the display surface of the screen 111 to protect the screen 111, and the screen 111 is electrically connected to the main board of the electronic device through the first flexible circuit board 112, that is, electrically connected to the display signal source. The ultrasonic fingerprint sensor includes a piezoelectric layer 121, which is arranged below the display module, that is, the piezoelectric layer 121 is bonded to the side of the screen 111 away from the display surface, and the piezoelectric layer 121 generates ultrasonic waves based on the piezoelectric effect, and the generated ultrasonic waves propagate toward the side where the display module is located, and rebound back to the side of the piezoelectric layer 121 when encountering a finger pressed on the display module. In some embodiments, the ultrasonic fingerprint sensor also includes an ultrasonic receiver, which can convert the received ultrasonic waves into electrical signals based on the inverse piezoelectric effect.

[0033] Please refer to Figure 3 , Figure 3 This is a schematic diagram of pressure transmission provided in the embodiment of the present application. Figure 2 and Figure 3As shown, in some embodiments of the present application, the electronic device further includes a structural member and a supporting member, wherein the structural member is located below the display module and is used to fix the display module. Optionally, the structural member can be a cover of the main board. The supporting member is arranged between the structural member and the piezoelectric layer, and the supporting member is respectively against the structural member and the piezoelectric layer. Thus, the supporting member can be used to conduct pressure. For example, when the piezoelectric layer and the structural member are not in contact, by arranging a supporting member between the two, when the display module is pressed by an external force, the piezoelectric layer is attached to the bottom of the display module, so the pressure will be conducted to the structural member through the supporting member. Since the structural member has a large structural strength and is not easy to deform, it will provide a supporting force to the piezoelectric layer. Thus, the external force will cause the piezoelectric layer to deform, so that the capacitance value of the equivalent capacitance of the piezoelectric layer changes. The magnitude of the pressure pressed on the display module can be known by the change in the capacitance value, thereby realizing pressure detection.

[0034] In the embodiments of the present application, the support member is optionally made of a hard material to achieve good pressure conduction and ensure the accuracy of pressure detection. Optionally, the support member is made of a conductive material. In addition to conducting pressure, the conductive material support member can also be used to absorb ultrasonic waves. In some embodiments, the support member is a conductive foam that can conduct pressure and absorb ultrasonic waves.

[0035] In some embodiments of the present application, optionally, the ultrasonic fingerprint sensor further includes a driver chip, which is electrically connected to the piezoelectric layer, and the driver chip is used to drive the piezoelectric layer to emit ultrasonic waves when the electronic device is in a fingerprint recognition mode, thereby realizing a fingerprint recognition function.

[0036] In some other embodiments of the present application, the electronic device further includes a controller and a flexible circuit board, the driving chip is connected to the controller via a second flexible circuit board, and the controller is used to control the driving chip to drive the piezoelectric layer to emit ultrasonic waves when the electronic device is in a fingerprint recognition mode. Optionally, the second flexible circuit board can also realize an electrical connection between the driving chip and the piezoelectric layer.

[0037] In some embodiments of the present application, the piezoelectric layer includes a first electrode layer, a second electrode layer, and a piezoelectric material layer between the first electrode layer and the second electrode layer, wherein the first electrode layer and the second electrode layer are made of metal, and optionally, the piezoelectric material layer can be a copolymer. That is, when the piezoelectric layer works as part of the ultrasonic fingerprint sensor, a voltage is applied to the first electrode layer and the second electrode layer of the piezoelectric layer, so that the piezoelectric material layer between the first electrode layer and the second electrode layer generates a piezoelectric effect, and then generates ultrasonic waves, that is, the emission of ultrasonic waves is realized. When the piezoelectric layer works as a part of the piezoelectric sensor, the first electrode layer, the second electrode layer and the piezoelectric material layer form an equivalent capacitor, that is, the first electrode layer and the second electrode layer serve as the two plates of the equivalent capacitor, and the piezoelectric material layer serves as the medium of the equivalent capacitor. Since the distance d between the first electrode layer and the second electrode layer of the piezoelectric layer at the pressed position and the unpressed position is different, that is, when squeezed by external force, the distance d between the first electrode layer and the second electrode layer of the piezoelectric layer changes, then the capacitance value of the equivalent capacitor changes, thereby determining the pressed position and the unpressed position, and then the pressure magnitude can be detected according to the specific capacitance value.

[0038] Please refer to Figure 4 , Figure 4 A schematic diagram of the principle of pressure detection provided by an embodiment of the present application. Figure 4 As shown, exemplarily, when a finger is used to press the display module, the pressed position and the unpressed position can be determined based on the different distances d between the two plates of the piezoelectric layer at the pressed position and the unpressed position. At this time, the pressed position information can be reported to the processor of the electronic device for processing. Furthermore, after being pressed by a finger, the display module is deformed, and the piezoelectric layer attached to the display module is also deformed, that is, the distance d between the two plates of the equivalent capacitance of the piezoelectric layer changes. According to the capacitance formula, the capacitance value before and after the deformation can be obtained, and then the capacitance change can be obtained, thereby quantifying the size of the deformation. The pressure sensor can output a pressure sensing (pressure sensing) signal to the processor, and the processor can perform corresponding pressing processing according to the pressure size.

[0039] In some embodiments of the present application, the first electrode layer includes a thin film transistor layer, the thin film transistor layer includes a thin film transistor TFT array, and voltage can be applied through the thin film transistor layer to enable the piezoelectric layer to emit ultrasonic waves.

[0040] In some embodiments of the present application, the pressure sensor also includes a pressure sensing unit, and the pressure sensing unit is connected to the receiving unit of the pressure sensor. The pressure sensing unit can use a piezoresistive structure to detect pressure through a Huitongs bridge. Optionally, the display module includes a touch component and a display component, the touch component is used to implement a touch function, and the display component is used to implement a display function, and the pressure sensing unit is arranged between the touch component and the display component. Optionally, the pressure sensing unit can also be arranged below the display module, for example, connected in a fitting manner. Optionally, the pressure sensing unit and the piezoelectric layer are at different positions below the display module. Therefore, by using the pressure sensing unit and the reused piezoelectric layer to jointly perform pressure detection, the accuracy of pressure detection can be improved and dual pressure sensing detection can be achieved.

[0041] In summary, in the embodiments of the present application, by connecting the piezoelectric layer of the ultrasonic fingerprint sensor to the receiving unit of the pressure sensor, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can also generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0042] Please refer to Figure 5 , Figure 5 This is one of the flow charts of a detection method provided in the embodiment of the present application. Figure 5 As shown, another aspect of the present application further provides a detection method, which is applied to the electronic device described in the above embodiment, and the detection method includes the following steps:

[0043] Step 501: When it is detected that the electronic device is in a fingerprint recognition mode, the piezoelectric layer is controlled to emit ultrasonic waves, and the ultrasonic fingerprint sensor is used to obtain a fingerprint pressed on the display module;

[0044] When it is detected that the electronic device is in a pressure detection mode, a pressure signal is generated according to the deformation of the piezoelectric layer, and the pressure applied to the display module is acquired by using the pressure sensor.

[0045] In the embodiment of the present application, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0046] In some embodiments of the present application, optionally, whether the electronic device is in fingerprint recognition mode or pressure detection mode can be determined based on the state of the electronic device and the type of application currently running on the electronic device. For example, when the electronic device is in a powered-on and unlocked state, fingerprint recognition is required, and the electronic device is in fingerprint recognition mode; or, when the electronic device is in an identity verification, payment verification, etc. state, fingerprint recognition is required, and the electronic device is in fingerprint recognition mode; for another example, when the electronic device is currently running a game application, pressure detection is required to enhance the gaming experience, and therefore the electronic device is in pressure detection mode at this time. In some embodiments, the above-mentioned fingerprint recognition mode or pressure detection mode can also be set through a setting item, that is, it is set by the user.

[0047] Please refer to Figure 6 , Figure 6 The second flow chart of a detection method provided in the embodiment of the present application. Figure 6 As shown, in some embodiments of the present application, the electronic device is a mobile phone as an example, and the above detection method is specifically introduced. The detection method is as follows: the mobile phone is turned on normally and enters the power-on unlocking interface, then it can be defined that the mobile phone is in fingerprint mode (i.e., the fingerprint recognition mode in the above embodiment), and the ultrasonic wave is emitted through the piezoelectric layer for fingerprint recognition, and the fingerprint is unlocked and then used; after that, it is determined whether the mobile phone has opened the game. If the game is opened, the mobile phone enters the pressure sensing mode (i.e., the pressure detection mode in the above embodiment), and performs pressure sensing (pressure sensing) operation during the game. After the game is finished, the pressure sensing mode is exited and the mobile phone is used normally; and if it is determined that the mobile phone has not opened the game, it is further determined whether there is unlocking and payment. If so, the mobile phone enters the fingerprint mode, and the ultrasonic wave is emitted through the piezoelectric layer for fingerprint recognition, and then the fingerprint unlocking operation is performed. After the unlocking is completed, the fingerprint mode is exited and the mobile phone is used normally.

[0048] In summary, in the embodiments of the present application, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to achieve ultrasonic fingerprint recognition, and can generate a pressure signal when the electronic device is in pressure detection mode to achieve under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0049] The detection method provided in the embodiment of the present application can be executed by a detection device. In the embodiment of the present application, the detection device provided in the embodiment of the present application is described by taking the detection method executed by the detection device as an example.

[0050] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a detection device provided in an embodiment of the present application. Figure 7 As shown, the present application provides a detection device on another aspect, the detection device 700 includes:

[0051] The detection module 701 is used to control the piezoelectric layer to emit ultrasonic waves when detecting that the electronic device is in a fingerprint recognition mode, and to use the ultrasonic fingerprint sensor to obtain a fingerprint pressed on the display module;

[0052] When it is detected that the electronic device is in a pressure detection mode, a pressure signal is generated according to the deformation of the piezoelectric layer, and the pressure applied to the display module is acquired by using the pressure sensor.

[0053] In the embodiment of the present application, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0054] The detection device in the embodiment of the present application can be an electronic device, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices other than the terminal. Exemplary, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a palmtop computer, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtualreality, VR) equipment, a robot, a wearable device, a super mobile personal computer (ultra-mobile personalcomputer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and can also be a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., and the embodiment of the present application is not specifically limited.

[0055] The detection device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0056] The detection device provided in the embodiment of the present application can achieve Figures 5 and 6 To avoid repetition, the various processes implemented by the method embodiment are not described here.

[0057] Alternatively, if Figure 8 As shown, an embodiment of the present application also provides an electronic device 800, including a processor 801 and a memory 802, wherein the memory 802 stores programs or instructions that can be executed on the processor 801, and when the program or instructions are executed by the processor 801, the various steps of the above-mentioned detection method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, they are not described here.

[0058] Fig. 9 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application.

[0059] The electronic device 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010 and other components.

[0060] Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig. 9 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0061] The processor 1010 is configured to control the piezoelectric layer to emit ultrasonic waves when detecting that the electronic device is in a fingerprint recognition mode, and to use the ultrasonic fingerprint sensor to obtain a fingerprint pressed on the display module;

[0062] When it is detected that the electronic device is in a pressure detection mode, a pressure signal is generated according to the deformation of the piezoelectric layer, and the pressure sensor is used to obtain the pressure of pressing on the display module.

[0063] In the embodiment of the present application, the piezoelectric layer originally used to transmit ultrasonic waves is reused as an equivalent capacitor that can detect pressure, so that the piezoelectric layer can transmit ultrasonic waves when the electronic device is in fingerprint recognition mode to realize ultrasonic fingerprint recognition, and can generate a pressure signal when the electronic device is in pressure detection mode to realize under-screen pressure detection, thereby achieving compatibility between the two functions of ultrasonic fingerprint recognition and under-screen pressure detection and the corresponding structures, optimizing the structural design, and reducing the structural thickness of the electronic device.

[0064] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0065] The memory 1009 can be used to store software programs and various data. The memory 1009 can mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area can store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 can include a volatile memory or a non-volatile memory, or the memory 1009 can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0066] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0067] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned detection method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0068] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory, a random access memory, a magnetic disk or an optical disk.

[0069] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned detection method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0070] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0071] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned detection method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0072] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes 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 one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0073] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0074] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises a display module, an ultrasonic fingerprint sensor and a pressure sensor, wherein the ultrasonic fingerprint sensor comprises a piezoelectric layer, the piezoelectric layer is attached to the bottom of the display module, the pressure sensor comprises a receiving unit, the receiving unit is electrically connected to the piezoelectric layer, the piezoelectric layer emits ultrasonic waves when the electronic device is in a fingerprint recognition mode, and generates a pressure signal when the electronic device is in a pressure detection mode; The electronic device further comprises a structural member and a supporting member, wherein the structural member is located below the display module and is used to fix the display module, and the supporting member is arranged between the structural member and the piezoelectric layer and is used to conduct pressure, and the structural member is a cover of the main board; The support member is a conductive foam; or, The support member is made of conductive material and is also used for absorbing ultrasonic waves.

2. The electronic device according to claim 1, characterized in that: The ultrasonic fingerprint sensor further includes a driving chip, which is connected to the piezoelectric layer and is used to drive the piezoelectric layer to emit ultrasonic waves when the electronic device is in a fingerprint recognition mode.

3. The electronic device according to claim 2, characterized in that: The electronic device also includes a controller and a flexible circuit board. The driving chip is connected to the controller via the flexible circuit board. The controller is used to control the driving chip to drive the piezoelectric layer to emit ultrasonic waves when the electronic device is in a fingerprint recognition mode.

4. The electronic device according to claim 1, characterized in that: The piezoelectric layer includes a first electrode layer, a second electrode layer, and a piezoelectric material layer located between the first electrode layer and the second electrode layer.

5. The electronic device according to claim 4, characterized in that: The first electrode layer includes a thin film transistor layer, and the thin film transistor layer includes a plurality of thin film transistors distributed in an array.

6. The electronic device according to claim 1, characterized in that: The display module is an OLED display module.

7. A detection method, characterized in that: Applied to the electronic device according to any one of claims 1 to 6, the method comprising: When it is detected that the electronic device is in a fingerprint recognition mode, controlling the piezoelectric layer to emit ultrasonic waves, and using the ultrasonic fingerprint sensor to obtain a fingerprint pressed on the display module; When it is detected that the electronic device is in a pressure detection mode, a pressure signal is generated according to the deformation of the piezoelectric layer, and the pressure applied to the display module is acquired by using the pressure sensor.

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