Under-screen fingerprint detection component, fingerprint detection method, device and electronic equipment

Abstract

Embodiments of the present application provide a kind of under-screen fingerprint detection component, fingerprint detection method, device and electronic equipment, by controlling module movement module moves, drives the fingerprint acquisition module that is fixedly connected on module movement module to the touch position of display screen moves, during the movement of module movement module, by module position detection module, the position of fingerprint acquisition module is detected in real time, ensure that fingerprint acquisition module can accurately move to the below of the touch position of display screen and carry out fingerprint acquisition operation, wide-area fingerprint unlocking of optical under-screen fingerprint has been realized, user touch operation in the sliding range of reel slide chain can complete fingerprint unlocking, improve the convenience of use of user.

Description

Technical Field

[0001] This application relates to the field of fingerprint detection technology, and in particular to an under-display fingerprint detection component, fingerprint detection method, device, and electronic device. Background Technology

[0002] With the rapid development and widespread adoption of smartphones and other mobile devices, users are increasingly demanding higher standards for device security, convenience, and aesthetics. Fingerprint detection technology, as an important biometric technology, has been widely applied in mobile devices such as smartphones, providing users with a secure and fast way to unlock and authenticate their devices.

[0003] Optical under-display fingerprint detection technology is a new type of fingerprint detection technology that has been developed in recent years. It integrates the fingerprint sensor under the mobile phone screen, realizing the full-screen design of the screen. Users can directly perform fingerprint recognition on the screen. Currently, the optical under-display fingerprint unlocking position is a fixed small area, which cannot achieve wide coverage and can only unlock in a fixed position. Summary of the Invention

[0004] Based on this, this application provides an under-display fingerprint detection component, fingerprint detection method, device, and electronic device. By controlling the movement of the module moving module, the fingerprint acquisition module fixedly connected to the module moving module is moved towards the touch position of the display screen. During the movement of the module moving module, the position of the fingerprint acquisition module is detected in real time by the module position detection module to ensure that the fingerprint acquisition module can accurately move to below the touch position of the display screen to perform fingerprint acquisition operation. This realizes wide-area fingerprint unlocking of optical under-display fingerprint. Users can complete fingerprint unlocking by performing touch operations within the sliding range of the scroll chain, improving the convenience of user use.

[0005] As a first aspect of the present application, an under-display fingerprint detection component is provided, which is applied to a smart device with a display screen. The under-display fingerprint detection component is disposed below the display screen and includes a fingerprint acquisition module, a module movement module, and a module position detection module.

[0006] The fingerprint acquisition module is fixedly mounted on the module moving module, and the fingerprint acquisition module moves along with the module moving module.

[0007] The module moving module moves in response to the control signal sent by the smart device, thereby moving the fingerprint collection module fixedly mounted on the module moving module. The control signal is generated by the smart device based on the coordinate parameters of the touch position obtained by the user's touch operation on the display screen.

[0008] The module position detection module is used to detect the position of the fingerprint acquisition module during the movement of the fingerprint acquisition module, generate a position detection signal and send it to the smart device, wherein the position detection signal is used to instruct the smart device to parse the coordinate parameters of the current position of the fingerprint acquisition module;

[0009] The fingerprint acquisition module responds to the fingerprint acquisition signal sent by the smart device, acquires fingerprint information at the touch position, and sends the fingerprint information to the smart device. The fingerprint acquisition signal is generated by the smart device based on the coordinate parameters of the touch position and the current position coordinates of the fingerprint acquisition module.

[0010] In one embodiment, the module moving module includes a processing unit, a scroll section, a scroll chain, and a slide rail; the processing unit is communicatively connected to the scroll section; the scroll section includes two scrolls, which are respectively fixedly disposed at both ends of the slide rail, and the scroll chain is embedded in the slide rail; both ends of the scroll chain are slidably connected to the two scrolls respectively; the fingerprint collection module is fixedly installed on the upper surface of the scroll chain.

[0011] In one embodiment, the module position detection module includes a position detection unit and a current detection unit. The position detection unit is connected to the reel slip chain to form a detection circuit. The current detection unit is used to detect the current in the detection circuit and generate a position detection signal to be sent to the smart device. The position detection signal reflects the sliding length of the reel slip chain.

[0012] In one embodiment, the reel chain uses a variable resistance material as a variable resistor in the detection circuit.

[0013] In one embodiment, the position detection unit includes a probe and a protection resistor, and the current detection unit includes a power management chip probe that is passively and fixedly connected to the fingerprint acquisition module. The first end of the probe is connected to the scroll slide chain, the tail end of the probe is connected to the power management chip, the power management chip is connected to one end of the protection resistor, and the other end of the protection resistor is slidably connected to the scroll slide chain, thus constructing a detection circuit.

[0014] In one embodiment, a light-shielding component is further included, which includes a first light-shielding member and a second light-shielding member, which are fixedly disposed on the side of the fingerprint module; the first light-shielding member is slidably connected to one of the scrolls, and the second light-shielding member is slidably connected to the other scroll.

[0015] As a second aspect of this application, a fingerprint detection method using the under-display fingerprint detection component as described in the first aspect is provided, comprising the following steps:

[0016] In response to a user's touch operation on the display screen, the coordinate parameters of the touch position are obtained, and a control signal is generated based on the coordinate parameters of the touch position. The signal is then sent to the module moving module to control the module moving module to move, thereby moving the fingerprint collection module fixedly mounted on the module moving module.

[0017] The position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module is obtained, and the position detection signal is parsed to obtain the coordinate parameters of the current position of the fingerprint acquisition module.

[0018] The fingerprint acquisition module performs a matching judgment based on the coordinate parameters of its current position and the coordinate parameters of the touch position. Based on the matching judgment result, a fingerprint acquisition signal is sent to the fingerprint acquisition module to obtain the fingerprint information sent by the fingerprint acquisition module.

[0019] As a third aspect of the embodiments of this application, a fingerprint detection device is provided, comprising:

[0020] The instruction processing module is used to respond to the user's touch operation on the display screen, obtain the coordinate parameters of the touch position, generate a control signal according to the coordinate parameters of the touch position, and send it to the module moving module to control the module moving module to move, thereby driving the fingerprint collection module fixedly installed on the module moving module to move.

[0021] The coordinate parameter calculation module is used to obtain the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, and to parse the position detection signal to obtain the coordinate parameters of the current position of the fingerprint acquisition module.

[0022] The fingerprint detection module is used to perform a matching judgment based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position, and send a fingerprint acquisition signal to the fingerprint acquisition module according to the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module.

[0023] As a fourth aspect of the present application, an electronic device is provided, including a processor, a memory, and a computer program stored in the memory and executable on the processor; when executed by the processor, the computer program implements the steps of the fingerprint detection method as described in the second aspect.

[0024] The embodiments of this application control the rotation of two scrolls in the scroll section, driving the fingerprint acquisition module fixedly connected to the module movement module to move towards the touch position of the display screen. During the sliding of the scroll chain, the current detection unit performs real-time current detection to reflect the current sliding length of the scroll chain and confirm the current position of the fingerprint acquisition module. This allows the fingerprint acquisition module to accurately move below the touch position of the display screen to perform fingerprint acquisition operations, realizing wide-area fingerprint unlocking of optical under-display fingerprint. Users can complete fingerprint unlocking by performing touch operations within the sliding range of the scroll chain, improving user convenience.

[0025] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an under-display fingerprint detection component provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the module moving module of an under-display fingerprint detection component provided in one embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the module position detection module of an under-display fingerprint detection component provided in one embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the light-shielding module of an under-display fingerprint detection component provided in one embodiment of this application;

[0030] Figure 5 This is a schematic flowchart of a fingerprint detection method provided in one embodiment of this application;

[0031] Figure 6 This is a schematic flowchart of step S2 in a fingerprint detection method provided in one embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of a fingerprint detection device provided in one embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. Wherein, when the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0035] It should be understood that the embodiments described below do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0036] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, in the description of this application, unless otherwise stated, “a plurality” means two or more. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items, for example, A and / or B, which can represent: A alone, A and B together, and B alone; the character “ / ” generally indicates that the preceding and following objects are in an “or” relationship.

[0037] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, this information should not be limited to these terms, and these terms are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Depending on the context, the word "if" as used in this application can be interpreted as "when," "when," or "in response to determination."

[0038] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an under-display fingerprint detection component provided in one embodiment of this application.

[0039] An under-display fingerprint detection component is applied to a smart device with a display screen 1 installed. The under-display fingerprint detection component is located below the display screen 1 and includes a fingerprint acquisition module 2, a module movement module 3, and a module position detection module (not shown). The fingerprint acquisition module 2 is fixedly mounted on the module movement module 3 and moves with the module movement module 3. The module movement module 3 moves in response to a control signal sent by the smart device, causing the fingerprint acquisition module 2 fixedly mounted on the module movement module 3 to move. The control signal is generated by the smart device based on the coordinate parameters of the touch position obtained by the user's touch operation on the display screen 1. Specifically, the display screen 1 can be an LCD capacitive touch screen or an OLED capacitive touch screen. The display screen 1 can detect the user's touch operation of pressing the screen with a finger via TP touch.

[0040] In this embodiment, the user performs a touch operation on a smart device equipped with a display screen 1. The smart device locks the fingerprint spot position based on the TP touch detection finger touch position and obtains the coordinate parameters of the touch position. Based on the coordinate parameters of the touch position, it determines whether the fingerprint spot position coordinates are within the sliding range of the module moving module 3. If they are, the smart device sends a control signal to the module moving module 3. The module moving module 3 responds and moves along the sliding range, driving the fingerprint collection module 2 fixedly installed on the module moving module 3 to move.

[0041] The module position detection module (not shown) is used to detect the position of the fingerprint acquisition module 2 during its movement and generate a position detection signal to be sent to the smart device. The position detection signal is used to instruct the smart device to parse the coordinate parameters of the current position of the fingerprint acquisition module 2.

[0042] The fingerprint acquisition module 2 responds to the fingerprint acquisition signal sent by the smart device, acquires fingerprint information at the touch position, and sends the fingerprint information to the smart device. The fingerprint acquisition signal is generated by the smart device based on the coordinate parameters of the touch position and the current position coordinates of the fingerprint acquisition module 2.

[0043] During the movement of the fingerprint acquisition module 2, the module position detection module (not shown) detects the position of the fingerprint acquisition module 2, generates a position detection signal and sends it to the smart device. The smart device parses the position detection signal to obtain the coordinate parameters of the current position of the fingerprint acquisition module 2. The smart device matches and judges the current position coordinate parameters of the fingerprint acquisition module 2 with the coordinate parameters of the touch position to determine whether the fingerprint acquisition module 2 is located below the fingerprint spot position, i.e., below the touch position of the display screen 1. If the smart device determines whether the current fingerprint acquisition module 2 is located below the fingerprint spot position, the smart device generates a fingerprint acquisition signal and sends it to the fingerprint acquisition module 2. The fingerprint acquisition module 2 responds, acquires the fingerprint information of the touch position, and sends the fingerprint information to the smart device, so that the fingerprint acquisition module 2 can accurately move below the touch position of the display screen 1 to perform the fingerprint acquisition operation.

[0044] By controlling the movement of the module moving module 3, the fingerprint collection module 2, which is fixedly connected to the module moving module 3, moves towards the touch position of the display screen 1. During the movement of the module moving module 3, the position of the fingerprint collection module 2 is detected in real time by the module position detection module (not shown) to ensure that the fingerprint collection module 2 can accurately move to the area below the touch position of the display screen 1 to perform fingerprint collection. This realizes wide-area fingerprint unlocking of optical under-display fingerprint. Users can complete fingerprint unlocking by performing touch operations within the sliding range of the module moving module 3, which improves the convenience of user use.

[0045] Please see Figure 2 , Figure 2 This is a schematic diagram of the module moving module of an under-display fingerprint detection component provided in one embodiment of this application.

[0046] In one embodiment, the module moving module 3 includes a processing unit (not shown), a scroll section 31, a scroll slide chain 32, and a slide rail 33. The processing unit (not shown) is a microcontroller module, which is a microcontroller or microcontroller chip used for receiving, transmitting, and parsing signals.

[0047] The processing unit (not shown) is communicatively connected to the scroll section 31; the scroll section 31 includes two scrolls 311, which are fixedly mounted at both ends of the slide rail 33, and the scroll chain 32 is embedded in the slide rail 33; the two ends of the scroll chain 32 are slidably connected to the two scrolls 311 respectively; the fingerprint acquisition module 2 is fixedly mounted on the upper surface of the scroll chain 32.

[0048] When a user performs a touch operation on a smart device equipped with a display screen 1, the smart device locks the fingerprint spot position based on the TP touch detection finger touch position and obtains the coordinate parameters of the touch position. Based on the coordinate parameters of the touch position, it determines whether the fingerprint spot position coordinates are within the sliding range of the scroll chain 32 in the module movement module 3, i.e., the preset wide range. If they are, the smart device sends a control signal to the processing unit (not shown) in the module movement module 3. The processing unit (not shown) responds to the control signal sent by the smart device and generates a drive signal, which is sent to the scroll section 31 to control the motor gears in the two scrolls 311 of the scroll section 31 to work, so that the two scrolls 311 rotate, driving the scroll chain 32 to slide towards the touch position of the display screen 1, and driving the fingerprint collection module 2 fixedly connected to the scroll chain 32 to move towards the touch position of the display screen 1.

[0049] Please see Figure 3 , Figure 3 This is a schematic diagram of the module position detection module of an under-display fingerprint detection component provided in one embodiment of this application.

[0050] In one embodiment, the module position detection module includes a position detection unit 4 and a current detection unit 5. The position detection unit 4 is connected to the reel slip chain 32 to form a detection circuit. The current detection unit 5 is used to detect the current in the detection circuit and generate a position detection signal to be sent to the smart device. The position detection signal reflects the sliding length of the reel slip chain 32.

[0051] In one embodiment, the position detection unit 4 includes a probe 41 and a protection resistor 42, and the current detection unit 5 includes a power management chip 51. The probe 41 is passively fixed on the fingerprint acquisition module 2. The first end of the probe 41 is connected to the scroll slide chain 32, and the last end of the probe 41 is connected to one end of the power management chip 51. The other end of the power management chip 51 is connected to one end of the protection resistor 42, and the other end of the protection resistor 42 is slidably connected to the scroll slide chain 32 to form a detection circuit. Specifically, the power management chip 51 is a PMIC power management chip. The PMIC power management chip can provide power voltage to the detection circuit. At the same time, the PMIC power management chip has the function of detecting current. When a stable voltage of a fixed magnitude is continuously supplied to the external circuit, the PMIC power management chip detects the current in the circuit and generates a position detection signal based on the current and sends it to the smart device.

[0052] In one embodiment, the reel chain 32 is made of a variable resistance material and serves as the variable resistor in the detection circuit.

[0053] During the movement of the fingerprint acquisition module 2, i.e., during the sliding of the scroll chain 32, since the probe 41 is fixedly mounted on the fingerprint acquisition module 2 and its tip is connected to the scroll chain 32, the probe 41 and the scroll chain 32 maintain relative movement. As the fingerprint acquisition module 2 moves towards the touch position of the display screen 1, the length of the part of the scroll chain 32 that connects to the tip of the probe 41 and to the protective resistor 42—that is, the part of the scroll chain 32 that acts as a variable resistor—gradually increases. The effective resistance of the variable resistor becomes higher and higher, and the current value of the detection circuit changes with the change in the effective resistance of the variable resistor. The current detection unit 5 obtains the current in the detection circuit and generates a position detection signal based on the current, which is then sent to the smart device. The smart device analyzes the position detection signal to obtain the effective length of the variable resistor, i.e., the sliding length of the scroll chain 32, in the detection circuit. The smart device calculates the coordinate parameters of the current position of the fingerprint acquisition module 2 based on the sliding length of the scroll chain 32, thereby realizing real-time monitoring of the position of the fingerprint acquisition module 2 and ensuring that the fingerprint acquisition module 2 can be accurately moved below the touch position of the display screen 1, thus achieving accurate fingerprint acquisition operation.

[0054] In one embodiment, the under-display fingerprint detection component further includes a light-shielding module 6. See also... Figure 5 , Figure 5 This is a schematic diagram of the light-shielding module of an under-display fingerprint detection component provided in one embodiment of this application.

[0055] The light-shielding module 6 includes a first light-shielding component 61 and a second light-shielding component 62, both of which are made of light-shielding material. The first light-shielding component 61 and the second light-shielding component 62 are fixedly disposed on the side of the fingerprint acquisition module 2. The first light-shielding component 61 is slidably connected to one of the scrolls 311, and the second light-shielding component 62 is slidably connected to the other scroll 311, so that the first light-shielding component 61 and the second light-shielding component 62 can cover a wide area and can move with the fingerprint acquisition module 2 to achieve light-shielding processing of areas corresponding to non-fingerprint spot positions, thereby improving the accuracy of fingerprint acquisition by the fingerprint acquisition module 2.

[0056] Please see Figure 5 , Figure 5 The following is a flowchart illustrating a fingerprint detection method according to an embodiment of this application. The method includes the following steps:

[0057] S1: In response to the user's touch operation on the display screen, obtain the coordinate parameters of the touch position, generate a control signal based on the coordinate parameters of the touch position, and send it to the module moving module to control the module moving module to move, thereby driving the fingerprint collection module fixedly set on the module moving module to move.

[0058] The fingerprint detection method of this application can be executed by a smart device, which can implement the fingerprint detection method by means of software and / or hardware.

[0059] The smart device can consist of two or more physical entities, or it can consist of a single physical entity. The hardware referred to by fingerprint detection methods and devices essentially refers to computer equipment; for example, a smart device can be a computer, mobile phone, tablet, or smart interactive whiteboard.

[0060] In this embodiment, the smart device responds to the user's touch operation on the display screen, obtains the coordinate parameters of the touch position, generates a control signal based on the coordinate parameters of the touch position, and sends it to the module moving module to control the module moving module to move, thereby moving the fingerprint collection module fixedly installed on the module moving module.

[0061] Specifically, when a user performs a touch operation on a smart device equipped with a display screen, the smart device locks the fingerprint spot position based on the TP touch detection finger touch position, obtains the coordinate parameters of the touch position, generates a control signal based on the coordinate parameters of the touch position, and sends it to the processing unit in the module movement module. The processing unit responds to the control signal sent by the smart device, generates a drive signal and sends it to the scroll section, controlling the motor gears in the two scrolls of the scroll section to work, causing the two scrolls to rotate, driving the scroll slide chain to slide towards the touch position of the display screen, and driving the fingerprint collection module fixedly connected to the scroll slide chain to move towards the touch position of the display screen.

[0062] S2: Obtain the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, parse the position detection signal, and obtain the coordinate parameters of the current position of the fingerprint acquisition module.

[0063] In this embodiment, the smart device obtains the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, parses the position detection signal, and obtains the coordinate parameters of the current position of the fingerprint acquisition module.

[0064] Please see Figure 6 , Figure 6 The following is a flowchart illustrating step S2 of a fingerprint detection method provided in an embodiment of this application, including step S21, as follows:

[0065] S21: Obtain the detection current value, and based on the detection current value and the preset distance calculation algorithm, obtain the moving length of the module moving module, and based on the moving length of the module moving module, obtain the coordinate parameters of the current position of the fingerprint acquisition module.

[0066] In this embodiment, the smart device analyzes the position detection signal to obtain the detection current value. The detection current value is the current value obtained in real time by the current detection unit in the module position detection module during the movement of the fingerprint acquisition module, that is, during the sliding of the scroll chain, by the detection circuit built on the scroll chain.

[0067] The intelligent device obtains the moving length of the module based on the detected current value and a preset distance calculation algorithm. Based on this moving length, the intelligent device obtains the coordinate parameters of the current position of the fingerprint acquisition module. The distance calculation algorithm is as follows:

[0068] Lx = U / (r*Ix)

[0069] In the formula, Lx is the moving length of the module, r is the preset resistivity, U is the voltage provided by the power management chip, and Ix is the detected current value.

[0070] Specifically, the moving length Lx of the module is the effective length of the variable resistor, which is the scroll chain in the detection circuit, i.e., the sliding length of the scroll chain. The resistivity r is the resistivity of the variable resistor. The smart device calculates the coordinate parameters of the current position of the fingerprint acquisition module based on the moving length of the module, so as to realize the real-time monitoring of the position of the fingerprint acquisition module and ensure that the fingerprint acquisition module can accurately move to the touch position of the display screen, thereby realizing accurate fingerprint acquisition operation.

[0071] S3: Match and judge the fingerprint acquisition module based on the coordinate parameters of the current position and the coordinate parameters of the touch position, and send the fingerprint acquisition signal to the fingerprint acquisition module according to the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module.

[0072] In this embodiment, the smart device performs a matching judgment based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position, and sends a fingerprint acquisition signal to the fingerprint acquisition module according to the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module.

[0073] Specifically, the smart device obtains the distance between the current position of the fingerprint acquisition module and the touch position based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position. Based on this distance and a preset threshold, if the matrix meets the preset threshold, the smart device determines whether the current fingerprint acquisition module is located below the fingerprint spot position. The smart device generates a fingerprint acquisition signal and sends it to the fingerprint acquisition module. The fingerprint acquisition module responds, acquires the fingerprint information at the touch position, and sends the fingerprint information to the smart device, so that the fingerprint acquisition module can accurately move below the touch position of the display screen to perform fingerprint acquisition operation.

[0074] By controlling the rotation of two scrolls in the scroll section, the fingerprint collection module, which is fixedly connected to the module movement module, moves towards the touch position of the display screen. During the sliding of the scroll chain, the current detection unit performs real-time current detection to reflect the current sliding length of the scroll chain and confirm the current position of the fingerprint collection module. This allows the fingerprint collection module to accurately move below the touch position of the display screen to perform fingerprint collection, realizing wide-area fingerprint unlocking of optical under-display fingerprint. Users can complete fingerprint unlocking by performing touch operations within the sliding range of the scroll chain, improving user convenience.

[0075] Please refer to Figure 7 , Figure 7 This is a schematic diagram of a fingerprint detection device provided in one embodiment of this application. The device can implement all or part of the fingerprint detection method through software, hardware, or a combination of both. The fingerprint detection device 7 includes:

[0076] The instruction processing module 71 is used to respond to the user's touch operation on the display screen, obtain the coordinate parameters of the touch position, generate a control signal according to the coordinate parameters of the touch position, and send it to the module moving module to control the module moving module to move, thereby driving the fingerprint collection module fixedly installed on the module moving module to move.

[0077] The coordinate parameter calculation module 72 is used to obtain the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, parse the position detection signal, and obtain the coordinate parameters of the current position of the fingerprint acquisition module.

[0078] The fingerprint detection module 73 is used to perform a matching judgment based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position, and send a fingerprint acquisition signal to the fingerprint acquisition module according to the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module.

[0079] In this embodiment, the instruction processing module responds to the user's touch operation on the display screen, obtains the coordinate parameters of the touch position, generates a control signal based on the coordinate parameters of the touch position, and sends it to the module movement module to control the module movement module to move, thereby moving the fingerprint acquisition module fixedly mounted on the module movement module; the coordinate parameter calculation module obtains the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, parses the position detection signal to obtain the coordinate parameters of the current position of the fingerprint acquisition module; the fingerprint detection module performs a matching judgment based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position, and sends a fingerprint acquisition signal to the fingerprint acquisition module based on the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module. By controlling the rotation of two scrolls in the scroll section, the fingerprint collection module, which is fixedly connected to the module movement module, moves towards the touch position of the display screen. During the sliding of the scroll chain, the current detection unit performs real-time current detection to reflect the current sliding length of the scroll chain and confirm the current position of the fingerprint collection module. This allows the fingerprint collection module to accurately move below the touch position of the display screen to perform fingerprint collection, realizing wide-area fingerprint unlocking of optical under-display fingerprint. Users can complete fingerprint unlocking by performing touch operations within the sliding range of the scroll chain, improving user convenience.

[0080] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application. This application also provides an electronic device, including: a processor 81, a memory 82, and a computer program 83 stored in the memory 82 and executable on the processor; the electronic device can store multiple instructions, which are adapted to be loaded and executed by the processor as described above. Figures 5 to 6 The method steps of the illustrated embodiment can be found in the following documentation for detailed execution. Figures 5 to 6 The specific details of the illustrated embodiments will not be elaborated here.

[0081] The processor may include one or more processing cores. The processor 81 connects to various parts within the electronic device via various interfaces and lines. It executes various functions and processes data of the fingerprint detection device 8 by running or executing instructions, programs, code sets, or instruction sets stored in the memory 82, and by calling data stored in the memory 82. Optionally, the processor 81 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 81 may integrate one or more of the following: a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required to be displayed on the touch screen; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 81 and may be implemented as a separate chip.

[0082] The memory 82 may include random access memory (RAM) or read-only memory. Optionally, the memory 82 may include a non-transitory computer-readable storage medium. The memory 82 may be used to store instructions, programs, code, code sets, or instruction sets. The memory 82 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch instructions), instructions for implementing the various method embodiments described above, etc.; the data storage area may store data involved in the various method embodiments described above, etc. Optionally, the memory 82 may also be at least one storage device located remotely from the aforementioned processor 81.

[0083] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0085] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0086] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0087] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0088] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0089] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms.

[0090] This application is not limited to the above-described embodiments. If any modifications or variations to this application do not depart from the spirit and scope of this application, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this application, then this application also intends to include such modifications and variations.

Claims

1. An under-display fingerprint detection component, applied to a smart device with a display screen, wherein the under-display fingerprint detection component is disposed below the display screen, characterized in that, The system includes a fingerprint acquisition module, a module movement module, and a module position detection module. The module movement module includes a processing unit, a scroll section, a scroll chain, and a slide rail. The processing unit is communicatively connected to the scroll section. The scroll section includes two scrolls, which are respectively fixedly disposed at both ends of the slide rail. The scroll chain is embedded in the slide rail. Both ends of the scroll chain are slidably connected to the two scrolls. The fingerprint acquisition module is fixedly mounted on the upper surface of the scroll chain. The fingerprint acquisition module is fixedly mounted on the module moving module, and the fingerprint acquisition module moves along with the module moving module. The module movement module responds to the control signal sent by the smart device, controls the motor gears in the two scrolls of the scroll section to work, so that the two scrolls rotate, drive the scroll slide chain to slide towards the touch position of the display screen, and drive the fingerprint collection module fixedly connected to the scroll slide chain to move towards the touch position of the display screen. The control signal is generated by the smart device based on the coordinate parameters of the touch position obtained by the user's touch operation on the display screen. The module position detection module includes a position detection unit and a current detection unit. The position detection unit includes a probe and a protective resistor. The current detection unit includes a power management chip. The probe is passively fixed on the fingerprint acquisition module. The first end of the probe is connected to a scroll slide chain, and the last end of the probe is connected to one end of the power management chip. The other end of the power management chip is connected to one end of the protective resistor, and the other end of the protective resistor is slidably connected to the scroll slide chain to form a detection circuit. The scroll slide chain uses a variable resistance material as the variable resistor in the detection circuit. The circuit current detection unit is used to detect the current in the detection circuit and generate a position detection signal to be sent to the smart device; wherein, the position detection signal is used to instruct the smart device to analyze the coordinate parameters of the current position of the fingerprint acquisition module, reflecting the sliding length of the scroll chain; The fingerprint acquisition module responds to the fingerprint acquisition signal sent by the smart device, acquires fingerprint information at the touch position, and sends the fingerprint information to the smart device. The fingerprint acquisition signal is generated by the smart device based on the coordinate parameters of the touch position and the current position coordinates of the fingerprint acquisition module.

2. The under-display fingerprint detection component according to claim 1, characterized in that: It also includes a light-shielding module, which includes a first light-shielding component and a second light-shielding component. The first light-shielding component and the second light-shielding component are fixedly disposed on the side of the fingerprint collection module. The first light-shielding component is slidably connected to one of the scrolls, and the second light-shielding component is slidably connected to the other scroll.

3. A fingerprint detection method using the under-display fingerprint detection component as described in any one of claims 1 or 2, characterized in that, Includes the following steps: In response to a user's touch operation on the display screen, the coordinate parameters of the touch position are obtained, and a control signal is generated based on the coordinate parameters of the touch position. The signal is then sent to the module moving module to control the module moving module to move, thereby moving the fingerprint collection module fixedly mounted on the module moving module. The position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module is obtained, and the position detection signal is parsed to obtain the coordinate parameters of the current position of the fingerprint acquisition module. The fingerprint acquisition module performs a matching judgment based on the coordinate parameters of its current position and the coordinate parameters of the touch position. Based on the matching judgment result, a fingerprint acquisition signal is sent to the fingerprint acquisition module to obtain the fingerprint information sent by the fingerprint acquisition module.

4. The fingerprint detection method of the under-display fingerprint detection component according to claim 3, characterized in that, The step of parsing the position detection signal to obtain the coordinate parameters of the current position of the fingerprint acquisition module includes the following steps: The detection current value is obtained. Based on the detection current value and a preset distance calculation algorithm, the moving length of the module is obtained. Based on the moving length of the module, the coordinate parameters of the current position of the fingerprint acquisition module are obtained. The distance calculation algorithm is as follows: L x =U / (r I x ) In the formula, L x The moving length of the module is r, the preset resistivity is U, and the voltage provided by the power management chip is I. x The detected current value is [value].

5. An apparatus for applying the fingerprint detection method as described in claim 3, characterized in that, include: The instruction processing module is used to respond to the user's touch operation on the display screen, obtain the coordinate parameters of the touch position, generate a control signal according to the coordinate parameters of the touch position, and send it to the module moving module to control the module moving module to move, thereby driving the fingerprint collection module fixedly installed on the module moving module to move. The coordinate parameter calculation module is used to obtain the position detection signal sent by the module position detection module during the movement of the fingerprint acquisition module, and to parse the position detection signal to obtain the coordinate parameters of the current position of the fingerprint acquisition module. The fingerprint detection module is used to perform a matching judgment based on the coordinate parameters of the current position of the fingerprint acquisition module and the coordinate parameters of the touch position, and send a fingerprint acquisition signal to the fingerprint acquisition module according to the matching judgment result to obtain the fingerprint information sent by the fingerprint acquisition module.

6. An electronic device, characterized in that, include: A processor, a memory, and a computer program stored in the memory and executable on the processor; the computer program, when executed by the processor, implements the steps of the fingerprint detection method as described in claim 3 or 4.

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