WO2018133664A1

WO2018133664A1 - Fingerprint recognition module and electronic device

Info

Publication number: WO2018133664A1
Application number: PCT/CN2018/070047
Authority: WO
Inventors: 张海平
Original assignee: 广东欧珀移动通信有限公司
Priority date: 2017-01-22
Filing date: 2018-01-02
Publication date: 2018-07-26
Also published as: CN106874859B; CN106874859A

Abstract

A fingerprint recognition module (10) and an electronic device. The fingerprint recognition module (10) comprises a fingerprint chip (101), a cover plate (102), a circuit board (103), and a metal ring (104). The cover plate (102) is disposed on one side of the fingerprint chip (101). The circuit board (103) is disposed on the other side of the fingerprint chip (101) distant from the cover plate (102). The metal ring (104) surrounds the cover plate (102), and is electrically connected to a middle frame (20) in the electronic device. When the electric device is charged, interference of a common-mode interference signal to a fingerprint collection signal is reduced.

Description

Fingerprint identification module and electronic device

The present application claims priority to the filing date of the application No. 201710047048.1, entitled "A Fingerprint Identification Module and Mobile Terminal", filed on January 22, 2017, the content of which is incorporated herein by reference. in.

Technical field

The present application relates to the field of communications technologies, and in particular, to a fingerprint identification module and an electronic device.

Background technique

The use of electronic devices such as smart phones is becoming more and more widespread. People in modern life are basically a mobile phone. Currently, many mobile phones have fingerprint unlocking capabilities. When the fingerprint is unlocked, the sensor of the fingerprint recognition module transmits a fingerprint acquisition signal (for example, a square wave signal, a sinusoidal signal, etc.), and the fingerprint acquisition signal can form fingerprint image data by collecting the capacitance between the finger and the sensor.

Summary of the invention

The embodiment of the present invention provides a fingerprint identification module and an electronic device, which can reduce the interference of the common mode interference signal on the fingerprint collection signal when the electronic device is charged.

A first aspect of the present application provides a fingerprint identification module, which is applied to an electronic device, where the fingerprint identification module includes a fingerprint chip, a cover plate, a circuit board, and a metal ring, wherein:

The cover plate is disposed at one side of the fingerprint chip;

The circuit board is disposed on the other side of the fingerprint chip away from the cover plate;

The metal ring surrounds the cover plate, and the metal ring is electrically connected to a middle frame of the electronic device.

The second aspect of the present application provides an electronic device, including the fingerprint identification module provided by the first aspect of the present application, and a processor, a memory, and a communication interface.

The processor is coupled to the memory and the communication interface;

The memory stores executable program code for wireless communication.

The fingerprint identification module in the embodiment of the present application includes a fingerprint chip, a cover plate, a circuit board, and a metal ring, wherein: the cover plate is disposed on one side of the fingerprint chip; the circuit board is disposed on the other side of the fingerprint chip away from the cover plate; The circle surrounds the cover, and the metal ring is electrically connected to the middle frame of the electronic device. When the electronic device is charging, if the user uses the fingerprint recognition module on the electronic device to perform fingerprint unlocking, the common mode interference signal generated by the charger may cause interference to the fingerprint collection signal transmitted by the pattern recognition module. In order to reduce the interference caused by the common mode interference signal to the fingerprint acquisition signal transmitted by the pattern recognition module, the embodiment of the present application increases the finger and the metal ring by electrically connecting the metal ring in the fingerprint recognition module with the middle frame of the electronic device. The capacitance between the capacitors is such that the return path of the fingerprint acquisition signal emitted by the fingerprint chip is shortened, thereby reducing the interference of the common mode interference signal on the fingerprint acquisition signal.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the drawings without any creative work for those skilled in the art.

1 is a schematic structural diagram of a fingerprint identification module disclosed in an embodiment of the present application;

2 is a schematic diagram of a return path of a fingerprint acquisition signal disclosed in an embodiment of the present application;

3 is a schematic structural diagram of another fingerprint identification module disclosed in an embodiment of the present application;

4 is a schematic flowchart of a fingerprint collection method disclosed in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an electronic device disclosed in the implementation of the present application; FIG.

6 is a schematic structural diagram of another electronic device disclosed in the implementation of the present application;

FIG. 7 is a schematic structural diagram of still another electronic device disclosed in the implementation of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, and are not intended to describe a particular order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products, or equipment.

References to "an embodiment" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.

The electronic device involved in the embodiments of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user devices (User Equipment, UE), mobile station (MS), terminal device, and the like. For convenience of description, the devices mentioned above are collectively referred to as electronic devices.

When the mobile phone is charging, because the switch tube in the charger is turned on and off at high speed, a high-frequency interference signal, that is, a common mode interference signal, is formed. At this time, if the user uses the fingerprint to unlock, the common mode interference signal may cause interference to the fingerprint acquisition signal transmitted by the fingerprint recognition module. Therefore, the embodiment of the present application provides a fingerprint identification module and an electronic device, which can reduce the interference of the common mode interference signal on the fingerprint collection signal when the electronic device is charged.

The embodiments of the present application are described in detail below.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a fingerprint identification module according to an embodiment of the present disclosure. As shown in FIG. 1 , the fingerprint identification module 10 includes a fingerprint chip 101, a cover 102, a circuit board 103, and a metal. Circle 104, where:

The cover plate 102 is disposed at one side of the fingerprint chip 101;

The circuit board 103 is disposed on the other side of the fingerprint chip 101 away from the cover 102;

The metal ring 104 surrounds the cover plate 102, and the metal ring 104 is electrically connected to the middle frame 20 of the electronic device.

In the embodiment of the present application, the metal ring 104 is also called a fingerprint decoration ring, a fingerprint bezel, and a fingerprint ring. The manner in which the metal ring 104 surrounds the cover plate 102 may be such that the metal ring 104 is electrically connected to the cover plate 102. The metal ring 104 may be one or a combination of a circle, an ellipse, a rectangle, and a polygon. The material of the metal ring 104 may be stainless steel, gold, silver, copper or the like.

When the electronic device is charging, if the user uses the fingerprint recognition module 10 on the electronic device to perform fingerprint unlocking, the common mode interference signal generated by the charger may cause interference to the fingerprint collection signal transmitted by the fingerprint recognition module 10. In order to reduce the interference caused by the common mode interference signal to the fingerprint collection signal transmitted by the fingerprint recognition module 10, the embodiment of the present application increases the electrical connection between the metal ring 104 of the fingerprint recognition module 10 and the middle frame 20 of the electronic device. The capacitance between the user's finger and the metal ring 104 is such that the return path of the fingerprint acquisition signal emitted by the fingerprint chip is shortened, thereby reducing the interference of the common mode interference signal on the fingerprint acquisition signal.

As shown in FIG. 2, FIG. 2 is a schematic diagram of a return path of a fingerprint acquisition signal disclosed in an embodiment of the present application. As shown in FIG. 2, the fingerprint acquisition signal transmitted by the fingerprint recognition module 10 has two return paths. One is the return of the _finger , the brezel and the sensor, including the capacitance of the _finger C _finger , the resistance of the metal ring R _bezel , the capacitance of the metal ring C _bezel , the capacitance of the sensor of the fingerprint recognition module 10 C _sensor . The other is backflow through a body and a Flexible Printed Circuit (FPC). It includes the capacitance of the _finger C _finger , the capacitance of the human body C _body , and the capacitance of the flexible circuit board C _FPC .

The shorter the return path of the fingerprint acquisition signal, the smaller the interference caused by the common mode interference signal to the fingerprint acquisition signal. Since the frequency of the fingerprint acquisition signal is several hundred KHz or even several MHz, the frequency is high. In order to ensure the passage of the high frequency signal, the capacitance of the capacitor in the return path of the fingerprint acquisition signal needs to be increased to shorten the return of the fingerprint acquisition signal. path. Since the capacitance of the _finger C _finger , the capacitance of the sensor of the fingerprint recognition module 10 C _sensor , the capacitance of the human body C _body , and the capacitance of the flexible circuit board C _FPC are not easily changed, the present application can adjust the resistance of the metal ring by R _bezel. The size of the capacitor C _bezel with the metal ring is used to shorten the return of the fingerprint acquisition signal, thereby reducing the interference of the common mode interference signal on the fingerprint acquisition signal. Specifically, it can be realized by lowering the resistance R _bezel of the metal ring and increasing the capacitance C _{bezel of the} metal ring.

In general, in the prior art, the metal ring 104 merely serves as a decoration. In the embodiment of the present application, the metal ring 104 is electrically connected to the middle frame 20 of the electronic device. When the user touches (or presses) the eyelet 104 of the fingerprint recognition module 10 with a finger, the capacitance C _bezel = εs / 4πkd formed between the user's finger and the eyelet 104. Where ε is the dielectric constant of the dielectric between the user's finger and the metal ring 104, s is the relative area between the user's finger and the metal ring 104, k is the electrostatic constant, and d is the distance between the user's finger and the metal ring 104. . Since the distance between the user's finger and the eyelet 104 is difficult to change, the dielectric between the user's finger and the eyelet 104 is also difficult to change. Therefore, to increase the size of the C _bezel , it is possible to increase the relative area between the user's finger and the eyelet 104. As can be seen from FIG. 1 , the area of the metal ring 104 itself is very small. After the metal ring 104 is electrically connected to the middle frame 20 of the electronic device, the relative area between the user's finger and the metal ring 104 is equivalent to the user's finger and the middle frame 20 . The relative area between. Since the area of the middle frame 20 is much larger than the area of the finger, the relative area between the user's finger and the middle frame 20 is much larger than the relative area between the user's finger and the metal ring 104, thereby increasing the size of the C _bezel and shortening the fingerprint collection. The backflow of the signal reduces the interference of the common mode interference signal on the fingerprint acquisition signal.

Optionally, the metal ring 104 and the middle frame 20 are electrically connected by conductive foam.

Among them, the conductive foam has the advantages of low surface resistivity, good wear resistance, large applicable temperature range, large applicable humidity range, and good flame retardancy. At the same time, the conductive foam also has the advantages of light material, oxidation resistance and corrosion resistance.

Specifically, the metal ring 104 can be connected to the conductive foam through a conductive adhesive by applying a conductive adhesive such as a conductive adhesive to the metal ring 104, and then the conductive adhesive is also applied to the middle frame 20, and the conductive adhesive is passed through the conductive adhesive. The frame 20 is connected to the conductive foam so that the metal ring 104 and the middle frame 20 are electrically connected by the conductive foam. It is also possible to fill the conductive foam directly between the metal ring 104 and the middle frame 20. Of course, the premise is that the conductive foam is not connected to other conductive members on the electronic device other than the metal ring 104 and the middle frame 20.

Optionally, the conductive foam comprises any one or more of nickel-plated copper conductive foam, gold-plated conductive foam, carbon-coated conductive foam, tin-plated conductive foam, conductive aluminum foil foam, and conductive copper foil foam. combination.

Optionally, the metal ring 104 and the middle frame 20 are electrically connected by a conductive sponge.

The conductive sponge may include a conductive sponge strip, a conductive sponge tube, a conductive sponge plate, or the like.

Optionally, the metal ring 104 and the middle frame 20 are connected by a conductive cloth.

The conductive cloth is a fiber cloth (commonly used polyester fiber cloth) as a base material, and after being pretreated, an electroplated metal plating layer is applied to have a metal characteristic to become a conductive fiber cloth. The conductive cloth has the advantages of light weight, easy cutting, oxidation resistance and corrosion resistance.

Optionally, the conductive cloth comprises any one or a combination of a nickel-plated conductive cloth, a gold-plated conductive cloth, a carbon-coated conductive cloth, and an aluminum foil fiber composite cloth.

Optionally, the metal ring 104 and the middle frame 20 are electrically connected by wires.

The material of the wire may be a material having a low resistivity such as copper, gold, silver or aluminum. It is possible to set the diameter of the wire to be large so that the resistance of the wire is low.

Optionally, the metal ring 104 and the middle frame 20 are electrically connected through the conductive plate.

The conductive plate material may be a material having a low resistivity such as copper, gold, silver or aluminum. One end of the conductive plate may be welded to the metal ring 104, and the other end of the conductive plate may be welded to the middle frame 20.

Optionally, please refer to FIG. 3. FIG. 3 is a schematic structural diagram of another fingerprint identification module according to an embodiment of the present disclosure. As shown in FIG. 3, the fingerprint identification module 10 includes a fingerprint chip 101 and a cover 102. The circuit board 103 and the metal ring 104, wherein:

The cover plate 102 is disposed at one side of the fingerprint chip 101;

The metal ring 104 surrounds the cover plate 102, and the metal ring 104 is electrically connected to the middle frame 20 of the electronic device;

The fingerprint chip 101 includes a fingerprint sensor 1011. The fingerprint sensor 1011 is configured to transmit a fingerprint collection signal, and the fingerprint collection signal is used to collect a fingerprint image of the user.

In the embodiment of the present application, the fingerprint identification module 10 of the electronic device can receive the fingerprint collection instruction input by the user. After receiving the fingerprint collection instruction, the fingerprint sensor 1011 of the fingerprint recognition module 10 transmits a fingerprint acquisition signal, and the fingerprint collection signal is used to collect a fingerprint image of the user.

The fingerprint collection instruction is used to trigger the electronic device to open the fingerprint collection function, and the fingerprint sensor 1011 of the fingerprint recognition module 10 of the triggering electronic device transmits the fingerprint collection signal.

Optionally, the difference between the frequency of the fingerprint acquisition signal and the frequency of the voltage signal output by the charger of the electronic device is greater than a preset threshold; the amplitude of the fingerprint acquisition signal and the amplitude of the voltage signal output by the charger are greater than a preset amplitude. .

In the embodiment of the present application, the electronic device can transmit the fingerprint collection signal by using the fingerprint recognition module 10 on the electronic device, and the difference between the frequency of the fingerprint acquisition signal and the frequency of the voltage signal output by the charger of the electronic device is greater than a preset threshold. In order to ensure that the electronic device can be interfered with the voltage signal output by the charger while the electronic device is in the charging state. The preset threshold may be preset and stored in a non-volatile memory of the electronic device.

Further, the amplitude of the fingerprint acquisition signal and the amplitude of the voltage signal output by the charger are greater than a preset amplitude. It can prevent the voltage signal output by the charger from interfering with the fingerprint acquisition signal. The preset amplitude can be preset and stored in the non-volatile memory of the electronic device.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of a fingerprint collection method according to an embodiment of the present application. As shown in FIG. 4, the fingerprint collection method includes the following steps.

S401. The electronic device receives a fingerprint collection instruction.

In the embodiment of the present application, the fingerprint receiving instruction received by the electronic device may be input by the user voice, or may be generated after the electronic device senses the fingerprint contact of the user. The fingerprint collection instruction is used to trigger the electronic device to open the fingerprint collection function, and trigger the electronic device to transmit the fingerprint collection signal.

S402, the fingerprint recognition module of the electronic device transmits a fingerprint acquisition signal, and the difference between the frequency of the fingerprint acquisition signal and the frequency of the voltage signal output by the charger of the electronic device is greater than a preset threshold; the amplitude of the fingerprint acquisition signal and the output of the charger The amplitude of the voltage signal is greater than a preset amplitude; the fingerprint acquisition signal is used to collect user fingerprint image data.

In the embodiment of the present application, the electronic device may collect a signal by using a fingerprint recognition module on the electronic device, and the difference between the frequency of the fingerprint acquisition signal and the frequency of the voltage signal output by the charger of the electronic device is greater than a preset threshold. It is guaranteed that the electronic device can be interfered with by the voltage signal output by the charger when the electronic device is in the charging state. The frequency of the voltage pulse signal output by the charger is generally several hundred KHz. For example, when the frequency of the voltage pulse signal output by the charger is 500 kHz, the frequency at which the fingerprint recognition module transmits the fingerprint acquisition signal can be set to 1.5 MHz. The fingerprint acquisition signal is used to collect user fingerprint image data. The amplitude of the fingerprint acquisition signal and the amplitude of the voltage signal output by the charger are greater than the preset amplitude, which can further prevent the interference of the voltage signal output by the charger on the fingerprint acquisition signal, and can set the amplitude of the fingerprint acquisition signal to be greater than the charger output. The amplitude of the voltage signal. For example, if the amplitude of the voltage signal output by the charger is 1.8V and the preset amplitude is 4V, the amplitude of the fingerprint acquisition signal can be set to 6V.

The method shown in FIG. 4 is implemented, and the difference between the frequency of the fingerprint acquisition signal of the fingerprint recognition module of the electronic device and the frequency of the voltage signal output by the charger of the electronic device is set to be greater than a preset threshold, so that the fingerprint acquisition signal and the charging are performed. The frequency of the voltage signal output by the device is staggered to reduce the interference of the voltage signal output by the charger on the fingerprint acquisition signal. Setting the amplitude of the fingerprint acquisition signal and the amplitude of the voltage signal output by the charger to be greater than a preset amplitude, so that the amplitude of the fingerprint acquisition signal and the voltage signal output by the charger are different, and when charging the electronic device, Further reducing the interference of the voltage signal output by the charger on the fingerprint acquisition signal.

The foregoing description of the solution of the embodiment of the present application is mainly made from the perspective of the process performed by the device and the method side. It can be understood that, in order to implement the functions of the above method side, the electronic device includes corresponding hardware structures and/or software modules for performing the respective functions. Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for each particular application to implement the described functionality, but such implementation should not be considered to be beyond the scope of the application.

The embodiment of the present application may divide the functional unit into the electronic device according to the foregoing method example. For example, each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.

In the case of employing an integrated unit, FIG. 5 shows a possible structural diagram of the electronic device involved in the above embodiment. FIG. 5 is a schematic structural diagram of an electronic device disclosed in the implementation of the present application. As shown in FIG. 5, the electronic device 500 includes a processing unit 502 and a communication unit 503. The processing unit 502 is configured to control and manage the actions of the electronic device. For example, the processing unit 502 is configured to support the electronic device to perform steps S401 to S402 in FIG. 4 and/or other processes for the techniques described herein. The communication unit 503 is for supporting communication between the electronic device and other devices, such as communication with a base station in the mobile communication network. The electronic device may further include a storage unit 501 for storing program codes and data of the electronic device.

The processing unit 502 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 503 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. The storage unit 501 can be a memory.

When the processing unit 502 is a processor, the communication unit 503 is a communication interface, and the storage unit 501 is a memory, the electronic device according to the embodiment of the present application may be the electronic device shown in FIG. 6.

FIG. 6 is a schematic structural diagram of another electronic device disclosed in the implementation of the present application. Referring to FIG. 6, as shown in FIG. 6, the electronic device 610 includes a processor 612, a communication interface 613, and a memory 611. Optionally, the electronic device 610 may further include a bus 615. The communication interface 613, the processor 612, and the memory 611 may be connected to each other through a bus 615. The bus 615 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on. The bus 615 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.

The electronic device shown in FIG. 5 or FIG. 6 can also be understood as a device for an electronic device. The embodiment of the present application is not limited.

Another electronic device is provided in the embodiment of the present application. As shown in FIG. 7, FIG. 7 is a schematic structural diagram of still another electronic device disclosed in the implementation of the present application. For the convenience of description, only the parts related to the embodiments of the present application are shown. If the specific technical details are not disclosed, please refer to the method part of the embodiment of the present application. The electronic device may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the like, and the electronic device is used as a mobile phone as an example:

FIG. 7 is a block diagram showing a partial structure of a mobile phone related to an electronic device provided by an embodiment of the present application. Referring to FIG. 7, the mobile phone includes: a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, and a processor 980. And power supply 990 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 7 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.

The following describes the components of the mobile phone in detail with reference to FIG. 7:

The RF circuit 910 can be used for receiving and transmitting information. Generally, RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920. The memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like. Moreover, memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 930 can include a fingerprint identification module 931 and other input devices 932. The fingerprint identification module 931 can collect fingerprint data of the user. In addition to the fingerprint recognition module 931, the input unit 930 may also include other input devices 932. Specifically, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like. The display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 940 can include a display screen 941. Alternatively, the display screen 941 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Although in FIG. 7, the fingerprint recognition module 931 and the display screen 941 function as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be Integrated to achieve the input and playback functions of the phone.

The handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset. The audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.

WiFi is a short-range wireless transmission technology, and the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access. Although FIG. 7 shows the WiFi module 970, it can be understood that it does not belong to the essential configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the invention.

The processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing The phone's various functions and processing data, so that the overall monitoring of the phone. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.

The handset also includes a power source 990 (such as a battery) that supplies power to the various components. Preferably, the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In the foregoing embodiment shown in FIG. 4, each step method flow can be implemented based on the structure of the mobile phone.

In the foregoing embodiment shown in FIG. 5, each unit function can be implemented based on the structure of the mobile phone.

The embodiment of the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and the program includes some or all of the steps of any one of the fingerprint collection methods described in the foregoing method embodiments.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present application. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a memory. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing memory includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.

A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable memory, and the memory can include: a flash drive Read-only memory (English: Read-Only Memory, ROM for short), random access memory (English: Random Access Memory, RAM for short), disk or optical disk.

The embodiments of the present application have been described in detail above. The principles and implementations of the present application are described in the specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present application. A person skilled in the art will have a change in the specific embodiments and the scope of the application according to the idea of the present application. In summary, the content of the present specification should not be construed as limiting the present application.

Claims

A fingerprint identification module is applied to an electronic device, wherein the fingerprint identification module comprises a fingerprint chip, a cover plate, a circuit board and a metal ring, wherein:

The cover plate is disposed at one side of the fingerprint chip;

The circuit board is disposed on the other side of the fingerprint chip away from the cover plate;

The metal ring surrounds the cover plate, and the metal ring is electrically connected to a middle frame of the electronic device.
The fingerprint recognition module according to claim 1, wherein the metal ring and the middle frame are electrically connected by a conductive foam.
The fingerprint recognition module according to claim 2, wherein the metal ring is coated with a conductive paste.
The fingerprint recognition module according to claim 3, wherein the middle frame is coated with a conductive paste.
The fingerprint recognition module according to any one of claims 2 to 4, wherein the conductive foam is one of the following: a conductive sponge strip, a conductive sponge tube, and a conductive sponge sheet.
The fingerprint recognition module according to any one of claims 2 to 5, wherein the conductive foam comprises nickel-plated copper conductive foam, gold-plated conductive foam, carbon-coated conductive foam, and tin-plated conductive foam. Any one or more combinations of conductive aluminum foil foam and conductive copper foil foam.
The fingerprint recognition module according to claim 1, wherein the metal ring and the middle frame are connected by a conductive cloth.
The fingerprint recognition module according to claim 7, wherein the conductive cloth comprises any one or more of a combination of a nickel-plated conductive cloth, a gold-plated conductive cloth, a carbon-coated conductive cloth, and an aluminum foil fiber composite cloth.
The fingerprint recognition module according to claim 1, wherein the metal ring and the middle frame are electrically connected by a wire.
The fingerprint recognition module according to claim 9, wherein the wire is made of the following materials: copper, gold, silver, and aluminum.
The fingerprint recognition module according to claim 1, wherein the metal ring and the middle frame are electrically connected through a conductive plate.
The fingerprint recognition module according to claim 11, wherein the conductive plate material is one of the following: copper, gold, silver, and aluminum.
The fingerprint recognition module according to any one of claims 1 to 12, wherein the metal ring is one or a combination of a circle, an ellipse, a rectangle, and a polygon.
The fingerprint recognition module according to any one of claims 1 to 13, characterized in that the material of the metal ring is one of the following: stainless steel, gold, silver, copper.
The fingerprint recognition module according to any one of claims 1 to 14, wherein the metal ring surrounds the cover plate in such a manner as to be electrically connected.
The fingerprint identification module according to any one of claims 1 to 15, wherein the fingerprint chip comprises a fingerprint sensor, the fingerprint sensor is used for transmitting a fingerprint acquisition signal, and the fingerprint collection signal is used for collecting a user fingerprint. image.
The fingerprint identification module according to claim 16, wherein a difference between a frequency of the fingerprint acquisition signal and a frequency of a voltage signal output by a charger of the electronic device is greater than a preset threshold; the fingerprint acquisition signal The magnitude of the voltage signal and the magnitude of the voltage signal output by the charger are greater than a preset amplitude.
An electronic device, comprising the fingerprint identification module according to any one of claims 1 to 17, and a processor, a memory, and a communication interface,

The processor is coupled to the memory and the communication interface;

The memory stores executable program code for wireless communication.