WO2019000294A1

WO2019000294A1 - Fingerprint recognition device and terminal device

Info

Publication number: WO2019000294A1
Application number: PCT/CN2017/090687
Authority: WO
Inventors: 黄维强
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2019-01-03
Also published as: CN108475334A

Abstract

A fingerprint recognition device and a terminal device. The fingerprint recognition device comprises: a first coating (110), a living body sensing module (120), a fingerprint recognition module (130), and a circuit board (140). The first coating (110) is arranged at the uppermost layer of the fingerprint recognition device. The living body sensing module (120) and the fingerprint recognition module (130) are arranged between the first coating (110) and the circuit board (140). The circuit board (140) is arranged at the lowermost layer of the fingerprint recognition device. The first coating (110) is used for protecting the fingerprint recognition device. The living body sensing module (120) is used for acquiring a vital sign parameter signal of a fingerprint carrier. The fingerprint recognition module (130) is used for: acquiring fingerprint information on the fingerprint carrier and determining a fingerprint recognition result on the basis of the fingerprint information and of the vital sign parameter signal. The circuit board (140) is used for transmitting the fingerprint recognition result. The fingerprint recognition device is capable of detecting whether acquired fingerprint information is fingerprint information of a living body and provides increased security and confidentiality.

Description

Fingerprint identification device and terminal device

Technical field

Embodiments of the present application relate to the field of biometrics, and more particularly, to a fingerprint identification device and a terminal device.

Background technique

With the rapid development of smart phones and mobile Internet, fingerprint recognition technology has also rapidly spread on mobile phones. Fingerprint recognition technology is superior to other human biometrics technologies, especially in protecting confidentiality, maintaining privacy and property security. At present, many fingerprint recognition technologies on the market mainly identify and match fingerprint information, but cannot detect whether the obtained fingerprint information is a living fingerprint information. At present, the fingerprint information can be obtained by copying the extracted fingerprint information on a material having a certain dielectric constant, so that the fingerprint identification device has low security and confidentiality, and cannot meet the current consumer application and experience of the consumer.

Summary of the invention

The present application provides a fingerprint identification device and a terminal device, which can detect whether the acquired fingerprint information is a living body fingerprint information, has high security and confidentiality, and can meet current consumer application requirements and experiences.

In a first aspect, a fingerprint identification device includes: a first coating layer, a living body sensing module, a fingerprint identification module, and a circuit board; the first coating layer is located at an uppermost layer of the fingerprint identification device, and the fingerprint An identification module and the living body sensing module are located between the first coating and the circuit board, the circuit board being located at a lowermost layer of the fingerprint identification device; the first coating for protecting the a fingerprint recognition device, configured to acquire a vital sign parameter signal of the fingerprint carrier, and the fingerprint identification module is configured to: acquire fingerprint information on the fingerprint carrier, according to the fingerprint information and the vital sign The parameter signal determines a fingerprint recognition result; the circuit board is configured to transmit the fingerprint recognition result.

The fingerprint identification module in the fingerprint identification device according to the embodiment of the present application determines the fingerprint recognition result according to the acquired fingerprint information and the vital sign parameter signal of the fingerprint carrier acquired by the living body sensing module, so that the fingerprint identification device can determine the acquired Whether the fingerprint information is the fingerprint information of the living body has high security and confidentiality, and can meet the needs and experiences of the current consumer's life application.

Optionally, the fingerprint identification module is a fingerprint identification chip.

It can be understood that the circuit board can function as a fingerprint recognition device in addition to transmitting fingerprint recognition results.

In conjunction with the first aspect, in an implementation of the first aspect, the living body sensing module includes: a light emitter for emitting an optical signal; and a light receiver for receiving light reflected from the fingerprint carrier And generating a vital sign parameter signal based on the optical signal.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the optical transmitter, the optical receiver, and the fingerprint identification module are integrally configured.

In combination with the first aspect and the above implementation manner, in another implementation of the first aspect, the first coating has a dielectric constant greater than or equal to 3; and/or the first coating has a thickness greater than or Equal to 5 microns, and the thickness of the first coating is less than or equal to 100 microns; and/or the first coating is one of the following materials: polyurethane, acrylic, epoxy, acrylic, polyester a compound, a fluoride, a silicide, an organic film; and/or the first coating is formed by coating or silk screen.

Since the dielectric constant of the first coating layer is greater than or equal to 3, the thickness of the first coating layer is between 5 and 100 micrometers, so that the first coating layer has better signal penetration capability, thereby making the fingerprint identification device higher. Recognition sensitivity.

Also, the thickness of the first coating is on the order of micrometers such that the fingerprint recognition device has a small thickness.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the method further includes: at least one second coating layer, the at least one second coating layer is located under the first coating layer And located above the living body sensing module and the fingerprint recognition module; the at least one second coating layer is configured to cause the fingerprint recognition device to present a target color.

Alternatively, the second coating is a paint layer that enables the color of the appearance of the fingerprint recognition device to be diversified.

In conjunction with the first aspect and the above implementation manner, in another implementation of the first aspect, the second coating of each of the at least one second coating layer has a dielectric constant greater than or equal to 3; and/or The thickness of each of the at least one second coating layer is greater than or equal to 5 microns, and the thickness of the second coating layer is less than or equal to 100 microns; and/or the at least one layer is second The second coating of each layer in the coating is one of the following materials: polyurethane, acrylic, epoxy, acryl compound, polyester compound, fluoride, silicide, organic film; and/or the at least one layer The second coating of each layer in the second coating is formed by coating or silk screen.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, a third coating layer disposed under the at least one second coating layer and located above the living body sensing module and the fingerprint recognition module; the third coating layer, And a method for combining the at least one second coating with the living body sensing module and the fingerprint recognition module.

In combination with the first aspect and the above implementation manner, in another implementation of the first aspect, the third coating has a dielectric constant greater than or equal to 3; and/or the third coating has a thickness greater than or Equal to 5 microns, and the thickness of the third coating is less than or equal to 100 microns; and/or the third coating is one of the following materials: polyurethane, acrylic, epoxy, acrylic, polyester a compound, a fluoride, a silicide, an organic film; and/or the third coating is formed by coating or silk screen.

In combination with the first aspect and the above implementation manner, in another implementation manner of the first aspect, the appearance characteristic of the first coating layer is one of the following appearance characteristics: polyurethane PU type, ultraviolet light UV curing type, dummy Light, highlights and textures.

In conjunction with the first aspect and the implementation thereof, in another implementation of the first aspect, the light emitter is a light emitting diode; and/or the light receiver is a light sensor.

In conjunction with the first aspect and the implementation thereof, in another implementation of the first aspect, the optical signal emitted by the optical transmitter has a wavelength greater than or equal to 850 nm.

In conjunction with the first aspect and the implementation thereof, in another implementation of the first aspect, the circuit board is a flexible circuit board.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, when the vital sign parameter signal indicates that the fingerprint carrier is a living body and the fingerprint information matches the registered fingerprint information, the fingerprint The recognition result is that the fingerprint recognition is successful.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the vital sign parameter corresponding to the vital sign parameter signal is heart rate or blood oxygen.

In a second aspect, a terminal device is provided, comprising the fingerprint recognition device of the first aspect or any of the possible implementations of the first aspect.

DRAWINGS

1 is a cross-sectional view of a fingerprint recognition apparatus in accordance with an embodiment of the present application.

2 is a cross-sectional view of a fingerprint recognition device in accordance with another embodiment of the present application.

3 is a cross-sectional view of a fingerprint recognition device in accordance with still another embodiment of the present application.

4 is a cross-sectional view of a fingerprint recognition apparatus in accordance with still another embodiment of the present application.

FIG. 5 is a cross-sectional view of a fingerprint recognition apparatus according to still another embodiment of the present application.

FIG. 6 is a schematic diagram of a terminal device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

In the description of the embodiments of the present application, the terms "above", "below", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings.

In the embodiment of the present application, the terminal device may be a device such as a mobile phone, a tablet computer, a notebook computer, an e-book, a mobile station, etc., which is not limited in this embodiment.

FIG. 1 illustrates a fingerprint recognition apparatus in accordance with an embodiment of the present application. As shown in FIG. 1, the fingerprint identification device 100 includes:

a first coating layer 110, a living body sensing module 120, a fingerprint identification module 130 and a circuit board 140;

The first coating layer 110 is located at an uppermost layer of the fingerprint identification device 100, and the living body sensing module 120 and the fingerprint identification module 130 are located between the first coating layer 110 and the circuit board 140. The circuit board 140 is located at a lowermost layer of the fingerprint identification device 100;

The first coating layer 110 is used to protect the fingerprint identification device 100;

The living body sensing module 120 is configured to acquire a vital sign parameter signal of the fingerprint carrier;

The fingerprint identification module 130 is configured to acquire fingerprint information on the fingerprint carrier, and determine a fingerprint recognition result according to the fingerprint information and the vital sign parameter signal;

The circuit board 140 is configured to transmit the fingerprint identification result.

As shown in FIG. 1, a plurality of solder joints 150 are disposed on the circuit board 140 such that the living body sensing module 120 and the fingerprint recognition module 130 are soldered to the solder joints 150 on the circuit board 140.

It should be noted that the first coating layer may also be referred to as a "cured layer." Moreover, the first coating is capable of transmitting light signals of a certain wavelength range. The first coating layer 110 for protecting the fingerprint identification device 100 can be understood as a first coating layer 110 for protecting components in the fingerprint recognition device 100 that are located below the first coating layer 110, for example, the living body sense in FIG. The module 120 and the fingerprint identification module 130.

Optionally, when the fingerprint identification module 130 acquires the fingerprint information, detecting the position of the fingerprint and the 根据 according to the collected coupling capacitance by detecting the coupling capacitance formed between the fingerprint carrier (eg, the finger) and the fingerprint recognition module 130. Thereby forming fingerprint image data. After receiving the vital sign parameter signal, the living body sensing module 120 transmits the vital sign parameter signal to the fingerprint identification module 130, The pattern recognition module 130 comprehensively considers the vital sign parameter signal and the acquired fingerprint image data to determine the fingerprint recognition result.

Optionally, in some embodiments, the fingerprint identification module 130 extracts the minutiae point in the acquired fingerprint information, and then calculates the similarity between the minutiae point in the acquired fingerprint information and the minutiae point of the registered fingerprint information, if the similarity degree If the preset matching threshold is greater than or equal to the preset matching threshold, it is determined that the obtained fingerprint information matches the registered fingerprint information, otherwise the obtained fingerprint information and the registered fingerprint information do not match. It should be noted that judging whether the acquired fingerprint information matches the registered fingerprint information by calculating the similarity of the minutiae points is only an example. The method for the specific judgment may be any one of the related technologies, which is not limited in this application.

Further, in some embodiments, if the finger identification module 130 determines the vital sign parameter according to the vital sign parameter signal, the fingerprint carrier is determined to be a living body according to the determined vital sign parameter, and the collected fingerprint information matches the registered fingerprint information. Then, the fingerprint identification module 130 determines that the fingerprint recognition result is successful for fingerprint recognition. If the fingerprint identification module 130 determines that the fingerprint carrier is not a living body according to the determined vital sign parameter, the fingerprint recognition result determined by the fingerprint identification module 130 is unsuccessful in fingerprint identification, regardless of whether the collected fingerprint information matches the registered fingerprint information. If the fingerprint identification module 130 determines that the fingerprint carrier is a living body according to the vital sign parameter, but the collected fingerprint information does not match the registered fingerprint information, the fingerprint recognition result determined by the fingerprint identification module 130 is that the fingerprint identification is unsuccessful.

Specifically, in other embodiments, the circuit board 140 transmits the fingerprint recognition result to a processor in the terminal device including the fingerprint recognition device 100, and the processor generates a corresponding instruction according to the fingerprint recognition result. Or the circuit board 140 transmits the fingerprint recognition result to the memory in the terminal device including the fingerprint recognition device 100, the processor of the terminal device acquires the fingerprint recognition result stored in the memory, and generates an instruction corresponding to the fingerprint recognition result. The circuit board 140 can be a Flexible Printed Circuit (FPC).

In the embodiment of the present application, optionally, the first coating layer 110 has a dielectric constant greater than or equal to 3. The material of the first coating layer 110 may be, for example, one of the following materials: polyurethane, acrylic, epoxy, acryl compound, polyester compound, fluoride, silicide, organic film; and/or the first coating The layers are produced by coating or silk screen. The thickness of the first coating layer 110 is between 5 micrometers and 100 micrometers. For example, the thickness of the first coating layer 110 which is matte for appearance characteristics may be 20-30 micrometers, and the first coating layer 100 having high appearance characteristics for high light. The thickness can be 30-50 microns.

In the embodiment of the present application, optionally, the appearance characteristic of the first coating layer 110 may be the following appearance One of the characteristics: Polyurethane (UV) type, Ultraviolet (UV) curing type, matte, high gloss and texture.

2 shows a cross-sectional view of a fingerprint recognition device in accordance with another embodiment of the present application. As shown in FIG. 2, the living body detecting module 120 in the fingerprint identifying apparatus 100 includes a light emitter 121 and a light receiver 122; the light emitter 121 is for transmitting an optical signal, and the light receiver 122 is for receiving reflection from the fingerprint carrier. The returned optical signal generates the vital sign parameter signal based on the optical signal.

It can be understood that when the light signal emitted by the light emitter 121 is reflected by the skin tissue and reflected to the light receiver 122, the light signal is attenuated to some extent. The absorption of light signals, such as muscles, bones, veins, and other connected tissues, is essentially constant, but the blood is different. Because of the flow of blood in the arteries, the absorption of light signals naturally changes. Thus, the vital sign parameter signal into which the optical receiver 122 converts the received optical signal includes a direct current signal and an alternating current signal, and the fingerprint recognition module 130 can calculate the heart rate based on the direct current signal and the alternating current signal. The vital sign parameters in the embodiments of the present application are not limited to the heart rate, and may be, for example, blood oxygen.

Optionally, the wavelength of the optical signal emitted by the light emitter 121 is greater than or equal to 850 nm. Or the light signal emitted by the light emitter 121 is green light.

Optionally, the light emitter 121 is a light emitting diode and the light receiver 122 is a light sensitive sensor.

Optionally, in some embodiments, the light emitter 121, the light receiver 122, and the fingerprint recognition module 130 are integrally arranged. This simplifies the production process of the fingerprint recognition apparatus 100.

It should be noted that the light emitter 121 and the light receiver 122 shown in FIG. 2 are located on both sides of the fingerprint recognition module 130, which is merely an example. Light emitter 121 and light receiver 122 may be located on the same side of fingerprint identification module 130.

FIG. 3 illustrates a cross-sectional view of a fingerprint recognition apparatus in accordance with still another embodiment of the present application. As shown in FIG. 3, the fingerprint identification device 100 further includes at least one second coating layer 160, the at least one second coating layer 160 is located under the first coating layer 110, and is located in the living body sensing module. 120 and the top of the fingerprint identification module 130, the at least one second coating layer 160 is configured to cause the fingerprint recognition device 100 to present a target color. The fingerprint identification device 100 of FIG. 3 includes a second coating layer 160. The fingerprint identification device 100 shown in FIG. 4 includes two layers of the second coating layer 160. In the actual production process, the number of layers of the second coating layer 160 can be set according to actual needs, which is not limited in the present application.

It should be noted that the second coating layer 160 may also be referred to as a "color layer."

Optionally, in some embodiments, the second coating 160 is a paint layer such that the color selection of the fingerprint recognition device 100 is more diverse.

Optionally, in some embodiments, each layer of the second coating layer 160 has a dielectric constant greater than or equal to 3; and/or, each layer of the second coating layer 160 has a thickness greater than or equal to 5 microns, and the second The thickness of the coating is less than or equal to 100 microns; and/or the second coating of each layer is one of the following materials: polyurethane, acrylic, epoxy, acrylic, polyester, fluoride, silicide, organic a film; and/or a second coating of each layer is formed by coating or silk screen.

FIG. 5 shows a cross-sectional view of a fingerprint recognition apparatus in accordance with still another embodiment of the present application. As shown in FIG. 5, the fingerprint identification device 100 further includes: a third coating layer 170, the third coating layer 170 is located under the at least one second coating layer 160, and is located in the living body sensing module 120 and The third coating layer 170 is configured to combine the at least one second coating layer with the living body sensing module 120 and the fingerprint recognition module 130.

It should be noted that the third coating layer 170 may also be referred to as an “adhesion bonding layer”. The third coating 170 is for the living body sensing module 120, the fingerprint recognition module 130, and the at least one second coating layer 160 to be more closely attached. There are two layers of second coating 160 in Figure 5 which are merely examples and are not limiting.

Optionally, in some embodiments, the third coating 170 has a dielectric constant greater than or equal to 3; and/or, the third coating has a thickness greater than or equal to 5 microns, and the third coating The thickness of the layer is less than or equal to 100 microns; and/or the third coating is one of the following materials: polyurethane, acrylic, epoxy, acryl, polyester, fluoride, silicide, organic film And/or, the third coating is formed by coating or silk screen.

FIG. 6 shows a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 6, the terminal device 200 includes the fingerprint recognition device 100 shown in any of FIGS. 1 to 5. The fingerprint recognition apparatus 100 shown in FIG. 6 is located on the side of the terminal device 200, just to be an example. The fingerprint recognition device 100 may also be located on the front side of the terminal device 200, or the fingerprint recognition device 100 may also be located on the back of the terminal device 200.

Optionally, the terminal device 200 may include two fingerprint identification devices 100, one of which is located on one side of the terminal device 200, and the other fingerprint identification device 100 is located on the other side of the terminal device 200. Alternatively, one of the fingerprint recognition devices 100 is located on the front side of the terminal device, and the other fingerprint identification device 100 is located on the back side of the terminal device. Alternatively, one of the fingerprint recognition devices 100 is located on the front side of the terminal device, and the other fingerprint identification device 100 is located on the side of the terminal device 200. Alternatively, one of the fingerprint recognition devices 100 is located on the back side of the terminal device, and the other fingerprint identification device 100 is located on the side of the terminal device 200.

Optionally, in the case that the terminal device 200 includes two fingerprint identification devices 100, the user sets When the terminal device 200 is used, whether fingerprint recognition by one fingerprint recognition device 100 or fingerprint recognition by two fingerprint recognition devices 100 can be set in advance. Thereby, different patterns of fingerprint recognition can be set for different operations.

Optionally, when the terminal device 200 is used, the user may set whether to enable the living body sensing function of the fingerprint recognition device 100 in advance. If the user is set to be on, the fingerprint identification module 130 in the fingerprint recognition device 100 performs fingerprint recognition according to the The vital sign parameter signal and the acquired fingerprint information determine the fingerprint recognition result. If set to off, the fingerprint identification module 130 in the fingerprint recognition device 100 determines the fingerprint recognition result based on the acquired fingerprint information only when performing fingerprint recognition.

Optionally, the registration fingerprint information used by the fingerprint recognition module 130 in the fingerprint identification device 100 is the user data stored in the terminal device 200, and is the fingerprint registered or reserved when the user opens the fingerprint recognition function in advance. data.

Alternatively, the registration fingerprint information used by the fingerprint identification module 130 for fingerprint recognition is fingerprint data acquired by the terminal device 200 from the cloud and stored locally. It can be understood that, in this case, when the user turns on the fingerprint recognition function of the terminal device 200, the user performs registration of the fingerprint data, and the terminal device 200 synchronizes the registered fingerprint data to the cloud.

It should be understood that the processor involved in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory involved in the embodiment of the present application may be a volatile memory or a non-easy memory. Loss memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be Ignore, or not execute. 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 in an electrical, mechanical or other form.

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 functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used 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 storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A fingerprint identification device, comprising:

a first coating, a living body sensing module, a fingerprint recognition module and a circuit board;

The first coating layer is located at an uppermost layer of the fingerprint identification device, the living body sensing module and the fingerprint identification module are located between the first coating layer and the circuit board, and the circuit board is located at the The lowermost layer of the fingerprint identification device;

The first coating is for protecting the fingerprint identification device;

The living body sensing module is configured to acquire a vital sign parameter signal of the fingerprint carrier;

The fingerprint identification module is used to:

Obtaining fingerprint information on the fingerprint carrier,

Determining a fingerprint recognition result according to the fingerprint information and the vital sign parameter signal;

The circuit board is configured to transmit the fingerprint identification result.
The fingerprint recognition device according to claim 1, wherein the living body sensing module comprises:

a light emitter for emitting an optical signal;

And an optical receiver, configured to receive an optical signal reflected from the fingerprint carrier, and generate the vital sign parameter signal according to the optical signal.
The fingerprint recognition device according to claim 2, wherein the light emitter, the light receiver, and the fingerprint recognition module are integrally disposed.
The fingerprint recognition device according to any one of claims 1 to 3, wherein the first coating has a dielectric constant greater than or equal to 3; and/or

The first coating has a thickness greater than or equal to 5 microns, and the first coating has a thickness less than or equal to 100 microns; and/or,

The first coating is one of the following materials: polyurethane, acrylic, epoxy, acryl, polyester, fluoride, silicide, organic film; and/or,

The first coating is produced by coating or silk screen.
The fingerprint recognition device according to any one of claims 1 to 4, further comprising: at least one second coating layer, the at least one second coating layer being located under the first coating layer And located above the living body sensing module and the fingerprint recognition module;

The at least one second coating layer is configured to cause the fingerprint recognition device to present a target color.
A fingerprint identification device according to claim 5, wherein said at least one layer The second coating of each layer in the second coating has a dielectric constant greater than or equal to 3; and/or,

The thickness of each of the at least one second coating layer is greater than or equal to 5 microns, and the thickness of the second coating layer is less than or equal to 100 microns; and/or,

The second coating of each of the at least one second coating layer is one of the following materials: polyurethane, acrylic, epoxy, acryl, polyester, fluoride, silicide, organic film; and / or,

Each of the at least one second coating layer is formed by coating or silk screen.
The fingerprint recognition device according to any one of claims 1 to 6, further comprising: a third coating layer, the third coating layer being located under the at least one second coating layer and located The living body sensing module and the upper surface of the fingerprint identification module;

The third coating is configured to combine the at least one second coating with the living body sensing module and the fingerprint recognition module.
The fingerprint recognition device according to claim 7, wherein

The third coating has a dielectric constant greater than or equal to 3; and/or,

The thickness of the third coating layer is greater than or equal to 5 microns, and the thickness of the third coating layer is less than or equal to 100 microns; and/or,

The third coating is one of the following materials: polyurethane, acrylic, epoxy, acryl, polyester, fluoride, silicide, organic film; and/or,

The third coating is produced by coating or silk screen.
The fingerprint recognition device according to any one of claims 1 to 8, characterized in that the appearance characteristic of the first coating layer is one of the following appearance characteristics: polyurethane PU type, ultraviolet light UV curing type, dummy Light, highlights and textures.
The fingerprint recognition device according to claim 2 or 3, wherein the light emitter is a light emitting diode; and/or the light receiver is a light sensor.
The fingerprint recognition device according to claim 10, wherein the optical signal emitted by the light emitter has a wavelength greater than or equal to 850 nm.
The fingerprint recognition device according to any one of claims 1 to 11, wherein the circuit board is a flexible circuit board.
The fingerprint identification device according to any one of claims 1 to 12, wherein, when the vital sign parameter signal indicates that the fingerprint carrier is a living body and the fingerprint information matches the registered fingerprint information, the fingerprint The recognition result is that the fingerprint recognition is successful.
The fingerprint identification device according to any one of claims 1 to 13, wherein the vital sign parameter corresponding to the vital sign parameter signal is heart rate or blood oxygen.
A terminal device comprising the fingerprint recognition device according to any one of claims 1 to 14.