CN104156709A - Fingerprint recognition detection assembly, terminal device and fingerprint verification method - Google Patents

Abstract

The disclosure provides a fingerprint identification and detection component, a terminal device, and a fingerprint verification method. The fingerprint identification and detection component includes: a pressing fingerprint detection element; a scratch fingerprint detection element; a security level acquisition unit for acquiring the security level of the transaction to be verified; a verification mode switching unit for when the acquired security level is the first When a security level is reached, enable the push-type fingerprint detection element for fingerprint verification; and when the acquired security level is the second security level, enable the wipe-type fingerprint detection element for fingerprint verification; wherein the first security The level is different from the second security level. The present disclosure can realize both the swiping type fingerprint verification and the pressing type fingerprint verification.

Description

Fingerprint identification detection component, terminal device and fingerprint verification method

technical field

The present disclosure relates to the field of fingerprint identification, and in particular to a fingerprint identification detection component, a terminal device with a fingerprint identification detection function, and a fingerprint verification method.

Background technique

With the wide application of portable terminals in people's daily life, the functions of the current portable terminals are becoming more and more powerful, and such diversified functions are convenient for users. However, while the portable terminal provides more convenience for the user, it carries too much private information. If the portable terminal is lost or stolen, the information is easily leaked because there is no relevant protection. cause inconvenience to users. Therefore, it is very necessary to do some security settings on the portable terminal. Current portable terminals often use passwords, graphics and other forms to implement password protection for their terminal devices.

However, for encryption methods such as passwords and graphics, users need to remember the set passwords and/or graphics; in addition, there is a danger of password disclosure in public places. In order to improve security, it is often necessary to increase the complexity of passwords and graphics, which undoubtedly further increases the difficulty of user memory, causing conflicts between security and ease of use.

Fingerprints are composed of uneven skin lines on the surface of fingers, which are unique features of the human body, and their complexity can provide sufficient features for identification. Fingerprint recognition is to use the uniqueness and stability of fingerprints to realize identity recognition without user memory.

The capacitive fingerprint detection and recognition component forms a conductive circuit on the base substrate. When the finger touches the sensor, it detects and forms a fingerprint pattern through the different capacitance values generated by the protrusions of the fingerprint ridges and the depressions of the fingerprint valleys.

In the prior art, the capacitive fingerprint recognition technology includes a swipe fingerprint recognition technology and a push fingerprint recognition technology. Swipe-type fingerprint recognition technology has the characteristics of low cost and large detection area, while push-type fingerprint recognition technology has the characteristics of high recognition accuracy but usually small detection area.

Contents of the invention

The purpose of the present disclosure is to provide a fingerprint recognition detection component and a terminal device with the fingerprint recognition detection component, which are used to simultaneously realize the swiping fingerprint recognition function and the pressing fingerprint recognition function; further, the present disclosure also provides a A fingerprint authentication method.

Realize the fingerprint identification function on devices such as portable terminal equipment.

Other features and advantages of the present disclosure will become apparent from the following detailed description, or in part, be learned by practice of the present disclosure.

According to one aspect of the present disclosure, a fingerprint recognition detection component:

A fingerprint identification detection component, characterized in that:

Push-type fingerprint detection element;

Scratch type fingerprint detection element;

A security level acquisition unit, configured to acquire the security level of the transaction to be verified;

A verification mode switching unit, configured to activate the push-type fingerprint detection element for fingerprint verification when the obtained security level is the first security level; Swipe fingerprint detection element for fingerprint verification;

Wherein the first security level is different from the second security level.

In an example embodiment of the present disclosure, the detection width of the wipe-type fingerprint detection element is greater than or equal to the detection width of the push-type fingerprint detection element.

In an example embodiment of the present disclosure,

The push-type fingerprint detection element and the wipe-type fingerprint detection element include a plurality of electrodes;

Part of the plurality of electrodes is shared by the push-type fingerprint detection element and the wipe-type fingerprint detection element.

In an exemplary embodiment of the present disclosure, the pressed fingerprint detection element includes:

A row-column matrix composed of a plurality of first electrodes and a plurality of second electrodes, each row including a plurality of first electrodes or a plurality of second electrodes, each column including a plurality of first electrodes and second electrodes, and each column in phase A pair of adjacent first electrodes and second electrodes form a push-type fingerprint identification unit;

In each column of the row-column matrix, the first electrodes of the fingerprint recognition units are electrically connected to each other;

In the rows formed by the second electrodes in the row-column matrix, the second electrodes are electrically connected to each other;

The wipe type fingerprint detection element includes:

said row of second electrodes;

The third electrode is spaced apart from each row formed by the second electrodes and faces to form a plurality of first detection gaps.

In an exemplary embodiment of the present disclosure, the rows formed by the first electrodes and the rows formed by the second electrodes are arranged alternately;

A second detection gap is formed between the first electrode and the second electrode in each push-type fingerprint identification unit; the second detection gap is not greater than half of the distance between the centers of two adjacent fingerprint identification units in a row.

In an exemplary embodiment of the present disclosure, in each column of fingerprint recognition units, the arrangement order of the first electrodes and the second electrodes of adjacent fingerprint recognition units is reversed.

In an exemplary embodiment of the present disclosure, electrodes are connected in series between the first electrodes in each column;

An insulating layer is provided between portions where the rows of second electrodes overlap with the connecting electrodes.

In an example embodiment of the present disclosure, the insulating layer includes silicon dioxide or an organic insulating material.

In an exemplary embodiment of the present disclosure, the first electrode is one of the sensing electrode or the driving electrode of the push-type fingerprint detection element, and the second electrode is one of the sensing electrode or the drive electrode of the push-type fingerprint detection element. the other driving electrode;

The second electrode is a driving electrode of the wipe-swipe fingerprint detection element, and the third electrode is a sensing electrode of the wipe-swipe fingerprint detection element.

In an example embodiment of the present disclosure, the first electrode, the second electrode, the third electrode and the connection electrode include metal particles, graphene, carbon nanotubes or conductive polymer materials.

In an exemplary embodiment of the present disclosure, the swiping fingerprint detection element further includes:

The reference electrode is disposed opposite to the third electrode and located on a side of the third electrode opposite to the plurality of rows formed by the second electrodes.

In an exemplary embodiment of the present disclosure, the swiping fingerprint detection element further includes:

A plurality of dummy driving electrodes, the plurality of dummy driving electrodes are arranged side by side and electrically connected to each other, the plurality of dummy driving electrodes corresponding to the plurality of driving electrodes are arranged on the reference electrode opposite to the third electrode side.

According to another aspect of the present disclosure, a terminal device with a fingerprint recognition and detection function includes any one of the above fingerprint recognition and detection components.

According to yet another aspect of the present disclosure, a fingerprint verification method is applied to a terminal device having both a push-type fingerprint detection element and a wipe-type fingerprint detection element; the method includes:

Obtain the security level of the transaction to be verified;

When the acquired security level is the first security level, enabling the push-type fingerprint detection element to perform fingerprint verification;

When the obtained security level is the second security level, enabling the scratch-type fingerprint detection element to perform fingerprint verification;

Wherein the first security level is different from the second security level.

According to an exemplary embodiment of the present disclosure, in the fingerprint recognition detection component and the terminal device provided with the fingerprint recognition detection component, since the push-type fingerprint detection element and the wipe-type fingerprint detection element are integrated, the fingerprint recognition detection Both swiping fingerprint verification and pressing fingerprint verification can be realized in the component. In yet another exemplary embodiment according to the present disclosure, since the push-type fingerprint detection element and the wipe-type fingerprint detection element share part of the electrode structure, on the one hand, the structure of the fingerprint recognition detection component can be simplified, and the size of the fingerprint recognition detection component can be reduced. On the other hand, it can simplify the process flow and reduce the preparation cost.

Description of drawings

The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

FIG. 1 is a device terminal for fingerprint identification and detection according to an embodiment of the present invention;

Fig. 2 is a block diagram of a fingerprint recognition detection component in an embodiment of the present invention;

Fig. 3 is a cross-sectional view of a fingerprint identification and detection component in an embodiment of the present invention;

FIG. 4 is a first structural schematic diagram of a fingerprint identification and detection component in an embodiment of the present invention;

Fig. 5 is a second structural schematic diagram of the fingerprint recognition detection component in the embodiment of the present invention;

6 is a schematic diagram of the third structure of the fingerprint identification and detection component in the embodiment of the present invention;

7 is a schematic diagram of a fourth structure of a fingerprint identification and detection component in an embodiment of the present invention;

Fig. 8 is a flow chart of the fingerprint verification method in the embodiment of the present invention.

Explanation of reference signs:

3. 3' Fingerprint identification and detection components

7 protective layer

30 drive circuit

31 The third electrode

32 second electrode

33 reference electrode

34 Dummy drive electrodes

35 First detection gap

36 The third detection gap

37 Differential filter

38 Differential Amplifier

39 wire

40 first electrode

41 Connecting electrodes

42 Second detection gap

H Finger sliding direction

D distance

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or that other methods, components, materials, etc. may be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

FIG. 1 illustrates a device terminal having a fingerprint recognition detection component according to an example embodiment. The fingerprint identification and detection component can be set in the non-display area S, or in the display area above the S area.

Fig. 2 is a schematic structural diagram of a fingerprint recognition detection component according to an example embodiment, which mainly includes a push-type fingerprint detection element 3b, a wipe-type fingerprint detection element 3a, a security level acquisition unit 3c, and a verification mode switching unit 3d.

Wherein, the swipe fingerprint detection element 3a can obtain the user's fingerprint information line by line during the process of the user's swipe on it, and finally combine them into complete fingerprint information. Since the area of the fingerprint detection element 3 a that acquires user fingerprint information is the product of the detection width and the length of the user's swipe, rich fingerprint information can be acquired. In this example embodiment, the detection width of the wipe-type fingerprint detection element 3a may be greater than or equal to the detection width of the push-type fingerprint detection element 3b. Of course, this example implementation is not limited thereto. In addition, since the acquired fingerprint information is rich, the swiping fingerprint detection element 3a can be verified by comparing feature points without image comparison.

The push-type fingerprint detection element 3b can obtain the user's fingerprint information by one-time or row-by-row scanning during the process of the user's pressing on it, without the need for the user to move the finger. The area where the push-type fingerprint detection element 3b acquires the user's fingerprint information is not larger than the area of the push-type fingerprint detection element 3b. In this way, the fingerprint information acquired by the push-type fingerprint detection element 3b may be less, so it may not be possible to use the method of comparing feature points. For verification, image comparison is required, which requires more computing time.

The security level acquisition unit 3c is used to acquire the security level of the transaction to be verified; the verification mode switching unit 3d is used to enable the push-type fingerprint detection element 3b to perform fingerprint verification when the acquired security level is the first security level; and When the acquired security level is the second security level, enable the swiping fingerprint detection element 3a to perform fingerprint verification; wherein the first security level is different from the second security level.

In the above-mentioned fingerprint recognition and detection component, since the push-type fingerprint detection element 3b and the wipe-type fingerprint detection element 3a are integrated, and the security level acquisition unit 3c and the verification mode switching unit 3d are set, on the one hand, it can be used in one fingerprint recognition and detection The component can realize both the swiping fingerprint verification and the pressing fingerprint verification. On the other hand, different fingerprint verification methods can be provided according to different security levels.

Further, the push-type fingerprint detection element and the wipe-type fingerprint detection element include a plurality of electrodes, such as driving electrodes and sensing electrodes, etc.; in an exemplary embodiment of the present disclosure, among the plurality of electrodes Part of the electrodes are shared by the push type fingerprint detection element and the wipe type fingerprint detection element. For example, a common driving electrode or a common sensing electrode and the like. Since the push-type fingerprint detection element and the wipe-type fingerprint detection element share part of the circuit, on the one hand, the structure of the fingerprint recognition detection component can be simplified, and the volume of the fingerprint recognition detection component can be reduced; preparation cost.

The above-mentioned fingerprint recognition and detection component 3 will be further described below with an example implementation.

As shown in FIG. 3-FIG. 7 , the fingerprint recognition detection component 3 in this exemplary embodiment includes both a push-type fingerprint detection element and a wipe-swipe fingerprint detection element. In addition, other structures such as a protective layer 7, leads, a fingerprint identification chip, and a main circuit board may also be included. For example:

As shown in FIG. 4 , in this exemplary embodiment, the push-type fingerprint detection element includes a row-column matrix composed of a plurality of first electrodes 40 and a plurality of second electrodes 32 , and each row includes a plurality of first electrodes 40 Or a plurality of second electrodes 32, each row includes a plurality of first electrodes 40 and second electrodes 32 and a pair of adjacent first electrodes and second electrodes in each row can form a basic capacitor, each of which is A simple fingerprint identification unit. All the pressing fingerprint recognition units are distributed in a matrix. In each column of the row-column matrix, the first electrodes 40 of the fingerprint recognition units are electrically connected to each other; in the row of the row-column matrix formed by the second electrodes 40, the second electrodes 40 are electrically connected to each other.

The first electrode 40 can be used as the sensing electrode of the push-type fingerprint detection element or as the driving electrode of the push-type fingerprint detection element. In this exemplary embodiment, the first electrode 40 is used as a sensing electrode of a push-type fingerprint detection element. Correspondingly, the driving electrode of the push-type fingerprint detection element is the second electrode 32 . A second detection gap 42 is formed between each of the first electrodes 40 and the adjacent second electrodes 32 .

Further, if each of the first electrodes 40 and the second electrodes 32 is respectively connected to a lead wire, the complexity of the circuit will be greatly increased; therefore, in this exemplary embodiment, each column of the first electrodes 40 The electrodes 41 are connected in series, and finally the first electrodes 40 in the same row are connected to one lead wire. The first electrodes 40 and the connecting electrodes 41 in each column may be of an integrated structure or may be of independent structures. Similarly, the second electrodes 32 in each row are connected in series, and finally the second electrodes 32 in the same row are connected to one lead wire. In this exemplary embodiment, the second electrodes 32 in each row may be of an integral structure, of course, in other exemplary embodiments, they may also be independent structures.

Since there is an overlapping area between the above-mentioned connecting electrodes 41 and the rows formed by the second electrodes 32, an insulating layer is provided between the overlapping parts of the rows formed by the second electrodes 32 and the connecting electrodes 41, Electrical isolation between the first electrodes 40 and the row formed by the second electrodes 32 is thereby achieved. The insulating layer may include silicon dioxide or an organic insulating material or the like. In a specific implementation, the row formed by the second electrodes 32 may be above the connecting electrodes 41, or the row formed by the second electrodes 32 may be below the connecting electrodes 41. In this example The implementation is not limited thereto.

Since the driving electrode (second electrode 32) of one fingerprint recognition unit is adjacent to the sensing electrode (first electrode 40) of another fingerprint recognition unit in the column direction, it may affect the sensing electrode of the other fingerprint recognition unit, As a result, it is difficult to accurately judge the fingerprint image from the signals read out from the corresponding sensing electrode columns. This problem can be solved by making half of the distance D between the centers of adjacent capacitive fingerprint recognition units in the column direction greater than the second detection gap 42; The sensing element of the fingerprint recognition unit.

In addition, the above problem can also be solved by disposing every two rows of the first electrodes 40 between two rows of the second electrodes 32 as shown in FIG. 6 . This is because the first electrode 40 of each fingerprint identification unit is adjacent to the first electrode 40 of an adjacent fingerprint identification unit, and the second electrode 32 is adjacent to the second electrode 32 of another adjacent fingerprint identification unit. In this way, since the first electrode 40 in each fingerprint recognition unit is only adjacent to the second electrode 32 in this unit, and will not be adjacent to another second electrode 32, therefore, the first electrode 40 in a different unit will not be generated. The problem of interference between the first electrode 40 and the second electrode 32 facilitates precise positioning of the unit that generates the fingerprint image.

As shown in Figures 4-7, the wipe-type fingerprint detection element and the push-type fingerprint detection element share the row formed by the second electrode 32; the wipe-type fingerprint detection element also includes vertically arranged (Of course, it can also form a specific angle) of the third electrode 31 . In this exemplary embodiment, the third electrode 31 can be used as a sensing electrode of a swiping type fingerprint detection element, which can be specifically a strip electrode. The row formed by the second electrodes 32 can be used as drive electrodes for the swipe fingerprint detection element. Each of the rows formed by the second electrodes 32 faces the third electrodes 31 at intervals to form a plurality of first detection gaps 35 . Each row formed by the second electrodes 32 and the third electrodes 31 can form a basic capacitor, and each capacitor is a simple fingerprint identification unit.

Although a plurality of electrodes of the fingerprint identification detection assembly 3 shown in Fig. 4-Fig. The influence of disturbances coupled through the main part of the finger to the ridges outside the gap 35 . In order to optimize the accuracy of fingerprint identification and eliminate the coupling interference from the fingerprint ridges outside the first detection gap 35, that is, to eliminate differential noise, multiple electrodes of the improved fingerprint identification detection component 3' are shown in FIG. 6 .

Similar to FIGS. 4-6 , the wipe-swipe fingerprint detection element in FIG. 7 includes a plurality of rows composed of second electrodes 32 and third electrodes 31 . The rows formed by the second electrodes 32 are substantially parallel to each other and are connected to the drive circuit 30 . The third electrodes 31 are arranged substantially perpendicular to the row formed by the second electrodes 32 . Each row of second electrodes 32 is spaced apart from the detection plate by a first detection gap 35 . Therefore, the plurality of electrodes of the fingerprint identification detection component 3 ′ includes linearly arranged first detection gaps 35 between each row formed by the second electrodes 32 and the third electrodes 31 . The drive circuit 30 sequentially activates the rows formed by the second electrodes 32 with a drive signal.

The wipe type fingerprint detection element can also include a reference electrode 33 and a plurality of dummy drive electrodes 34 (see FIG. 7 ), the reference electrode 33 is arranged opposite to the third electrode 31 and is located between the third electrode 31 and a plurality of second electrodes 32 Make up the opposite side of the row. A plurality of dummy driving electrodes 34 are arranged side by side and electrically connected to each other. The plurality of dummy driving electrodes 34 are arranged on the opposite side of the reference electrode 33 to the third electrode 31 corresponding to the rows formed by the second electrodes 32 .

The swipe fingerprint detection element further includes a reference electrode 33 that may be substantially parallel to the third electrode 31 and separated from the third electrode 31 . The reference electrode 33 is located on the side of the third electrode 31 opposite the row of second electrodes 32 and is thus separated from the row of second electrodes 32 by a greater distance than the third electrode 31 . The reference electrode 33 should be spaced from the row of second electrodes 32 by a distance sufficient to provide a noise and parasitic coupling reference for common mode noise cancellation. In some embodiments, the reference electrode 33 and the third electrode 31 may have equal length and width, and may be arranged in parallel side by side. The reference electrode 33 senses the ridge/valley signal similarly to the third electrode 31 , but at substantially reduced strength. Because the reference electrode 33 and the third electrode 31 are closely spaced and have similar dimensions, the two electrodes generate approximately equal noise and spurious signals. Subtracting the signal on the third electrode 31 from the signal on the reference electrode 33 produces a ridge/valley signal that is proportional to the difference between the sensed signals, due to the contrast from the two electrodes on the first detection gap 35. spacing, which is remarkable. However, equally coupled noise and spurious signals can be removed by subtracting the signals on the two electrodes.

The third electrode 31 and the reference electrode 33 are coupled to a differential amplifier 38 through a differential filter 37 . In particular, third electrode 31 may be coupled to a non-inverting input of differential amplifier 38 through differential filter 37 , and reference electrode 33 may be coupled to an inverting input of differential amplifier 38 through differential filter 37 . The differential amplifier 38 electronically subtracts the signals on the third electrode 31 and the reference electrode 33 such that noise and spurious signals are eliminated.

The swipe fingerprint detection element may further include a dummy drive circuit 30 spaced apart from the reference electrode 33 . As shown in FIG. 6 , the dummy driving circuit 30 may include substantially parallel dummy driving electrodes 34 disposed perpendicularly to the reference electrode 33 and separated from the reference electrode 33 by a third detection gap 36 . The parallel dummy driving electrodes 34 are electrically connected to each other by wires 39 , and are connected to the driving circuit 30 through the wires 39 . In some embodiments, the arrangement of parallel dummy drive electrodes 34 relative to reference electrode 33 matches the arrangement of rows of second electrodes 32 relative to third electrode 31 . Therefore, the width of the parallel dummy driving electrodes 34, the spacing between the parallel dummy driving electrodes 34, and the size of the third detection gap 36 can be related to the width of the row formed by the second electrodes 32, the row formed by the second electrodes 32, respectively. The distance between them is the same as the size of the first detection gap 35 .

The dummy driving circuit 30 may be connected to a reference potential, such as ground, during fingerprint image sensing. Thus, at any instant of time in fingerprint image sensing, one of the rows of second electrodes 32 may be excited by the drive signal, and the remaining row of second electrodes 32 coupled to a reference potential, such as ground. For the example where the swipe fingerprint detection element has rows of second electrodes 32, at any given moment, all rows of second electrodes 32 except one of the rows of second electrodes 32 is connected to ground, and at any given moment during image sensing, all parallel dummy drive electrodes 34 of the dummy drive circuit 30 are connected to ground. With this arrangement, noise on the ground conductor is substantially equivalently coupled to the third electrode 31 and the reference electrode 33 . Coupled noise is subtracted by differential amplifier 38 and thus canceled. The fingerprint image signal of interest is detected between the third electrode 31 and the reference electrode 33 and is not eliminated by the differential amplifier 38 . In this embodiment, the third electrode 31 , the row formed by the second electrode 32 , the reference electrode 33 and the dummy driving electrode 34 can all be formed by conventional deposition, etching and photolithography techniques.

Generally, the size of the first detection gap 35 is smaller than the ridge pitch of a typical fingerprint, and is generally in the range of 25 to 50 μm. In this embodiment, the pitches between adjacent rows formed by the second electrodes 32 are equal to each other and in the range of 50 to 60 μm, and the widths of the rows formed by the second electrodes 32 are equal to each other and in the range of 20 to 45 μm. , the sizes of the first detection gaps 35 are equal to each other and within a range of 20 to 40 μm.

In an example of a wipe-and-swipe fingerprint detection element, a row of second electrodes 32 has a width of 25 μm (micrometer), and the distance between adjacent rows of second electrodes 32 is 25 μm. The size of the first detection gap 35 is 25 μm. The spacing between the third electrode 31 and the reference electrode 33 was 25 μm. The width of the parallel dummy driving electrodes 34 of the dummy driving circuit 30 is 25 μm and the distance between adjacent dummy driving electrodes 34 is 25 μm. The size of the third detection gap 36 is 32 μm. The process dimension parameters here are given as examples only, and do not limit the scope of the present invention.

The materials of the first electrode 40 , the second electrode 32 , the third electrode 31 and the connection electrode 41 mentioned above may be the same or different. The materials forming the first electrode 40, the second electrode 32, the third electrode 31 and the connecting electrode 41 can be selected from ITO (indium tin oxide), or metal elemental particles such as gold, silver, copper, zinc, aluminum or one or both. More than one, metal alloy conductive material, graphene, carbon nanotube material, nano conductive material such as nano silver, etc., but the present disclosure is not limited thereto.

According to an example embodiment, the first electrode 40 , the second electrode 32 and the third electrode 31 may include a conductive mesh. By adopting the conductive grid, the cost is reduced, but the good effect of fingerprint recognition can still be achieved. In addition, the fingerprint detection and identification component may also include leads (not shown), connected to the wipe-type fingerprint detection element and the push-type fingerprint detection element, for connecting the fingerprint detection element to an external circuit, such as a fingerprint identification circuit. The leads may also include a conductive mesh.

Further, this exemplary embodiment also provides a terminal device with a fingerprint recognition and detection function, the terminal device has a display screen and any of the above-mentioned fingerprint recognition detection components, the display screen can be a touch screen or can be is a non-touch screen. By means of the fingerprint detection and identification component in this exemplary embodiment, the terminal device can realize both swiping fingerprint identification and pressing fingerprint identification. It is easy to understand that, the fingerprint identification and detection component in this example embodiment can also be applied to a terminal device without a display screen, and therefore it is not limited thereto.

In view of the fact that there are two different fingerprint recognition methods: the wipe-type fingerprint recognition technology and the push-type fingerprint recognition technology. Therefore, according to this example embodiment, a fingerprint verification method is also provided, and the fingerprint verification method is applied to the above-mentioned terminal device having both a swipe-type fingerprint detection element and a push-type fingerprint detection element; as shown in FIG. 8 , It mainly includes steps:

S11. Obtain the security level of the transaction to be verified;

S12-S13. When the acquired security level is the first security level, enable the scratch-type fingerprint detection element to perform fingerprint verification;

S14-S15. When the acquired security level is the second security level, enable the push-type fingerprint detection element to perform fingerprint verification;

Wherein the first security level is different from the second security level.

Taking mobile payment as an example, after the user enters the transaction amount during the mobile payment process, the system will determine whether the transaction is a small-amount payment transaction or a large-amount payment transaction. When it is judged that the transaction is a micropayment transaction, the security level of the obtained current transaction is the first security level, and at this time, the swiping fingerprint detection element can be activated by the control unit to perform fingerprint verification. When it is judged that the transaction is a large-amount payment transaction, the security level of the current transaction is the second security level, and at this time, the push-type fingerprint detection element can be activated by the control unit to perform fingerprint verification.

It is easy to understand that the security level of the transaction to be verified in this example embodiment can be preset according to needs; for example, the security level of unlocking the boot interface, starting the camera, etc. The security level of the photo album, opening the specified folder and viewing the SMS records is the second security level and so on.

As can be seen from the above, through the fingerprint verification method provided by this exemplary embodiment, when performing transaction verification with a low security level, it can be completed by the wipe-and-swipe fingerprint detection element; when performing transaction verification with a high security level, it can be completed by The push-type fingerprint detection element is completed.

The present disclosure has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples for implementing the present disclosure. It must be pointed out that the disclosed embodiments do not limit the scope of the present disclosure. On the contrary, changes and modifications made without departing from the spirit and scope of the present disclosure all belong to the patent protection scope of the present disclosure.

Claims (15)

1. A fingerprint identification detection component, characterized in that: Push-type fingerprint detection element; Scratch type fingerprint detection element; A security level acquisition unit, configured to acquire the security level of the transaction to be verified; A verification mode switching unit, configured to activate the push-type fingerprint detection element for fingerprint verification when the obtained security level is the first security level; Swipe fingerprint detection element for fingerprint verification; Wherein the first security level is different from the second security level. 2. The fingerprint recognition detection component according to claim 1, wherein the detection width of the wipe-type fingerprint detection element is greater than or equal to the detection width of the push-type fingerprint detection element. 3. The fingerprint recognition detection component according to claim 1, characterized in that: The push-type fingerprint detection element and the wipe-type fingerprint detection element include a plurality of electrodes; Part of the plurality of electrodes is shared by the push-type fingerprint detection element and the wipe-type fingerprint detection element. 4. The fingerprint identification and detection component according to claim 3, wherein the fingerprint detection component comprises: A row-column matrix composed of a plurality of first electrodes and a plurality of second electrodes, each row including a plurality of first electrodes or a plurality of second electrodes, each column including a plurality of first electrodes and second electrodes, and each column in phase A pair of adjacent first electrodes and second electrodes form a push-type fingerprint identification unit; In each column of the row-column matrix, the first electrodes of the fingerprint recognition units are electrically connected to each other; In the rows formed by the second electrodes in the row-column matrix, the second electrodes are electrically connected to each other; The wipe type fingerprint detection element includes: said row of second electrodes; The third electrode is spaced apart from each row formed by the second electrodes and faces to form a plurality of first detection gaps. 5. The fingerprint recognition detection assembly according to claim 4, characterized in that the rows formed by the first electrodes and the rows formed by the second electrodes are arranged alternately; A second detection gap is formed between the first electrode and the second electrode in each push-type fingerprint identification unit; the second detection gap is not greater than half of the distance between the centers of two adjacent fingerprint identification units in a row. 6 . The fingerprint identification detection component according to claim 4 , wherein, in each column of fingerprint identification units, the arrangement order of the first electrodes and the second electrodes of adjacent fingerprint identification units is reversed. 7. The fingerprint identification and detection component according to claim 4, characterized in that, electrodes connected in series are connected between the first electrodes in each row; An insulating layer is provided between portions where the rows of second electrodes overlap with the connecting electrodes. 8. The fingerprint recognition detection component according to claim 7, wherein the insulating layer comprises silicon dioxide or an organic insulating material. 9. The fingerprint identification and detection assembly according to claim 4, wherein the first electrode is one of the sensing electrode or the driving electrode of the push-type fingerprint detection element, and the second electrode is one of the push-type fingerprint detection element. The other of the sensing electrode or the driving electrode of the fingerprint detection element; The second electrode is a driving electrode of the wipe-swipe fingerprint detection element, and the third electrode is a sensing electrode of the wipe-swipe fingerprint detection element. 10. The fingerprint recognition detection component according to claim 4, wherein the first electrode, the second electrode, the third electrode and the connecting electrode comprise metal particles, graphene, carbon nanotubes or conductive polymer materials. 11. The fingerprint identification and detection assembly according to claim 4, wherein the scratch-type fingerprint detection element further comprises: The reference electrode is disposed opposite to the third electrode and located on a side of the third electrode opposite to the plurality of rows formed by the second electrodes. 12. The fingerprint identification and detection assembly according to claim 11, wherein the scratch-type fingerprint detection element further comprises: A plurality of dummy driving electrodes, the plurality of dummy driving electrodes are arranged side by side and electrically connected to each other, the plurality of dummy driving electrodes corresponding to the plurality of driving electrodes are arranged on the reference electrode opposite to the third electrode side. 13. The fingerprint identification and detection assembly according to claim 4, wherein at least a part of the pattern formed by the first electrode, the second electrode and the third electrode is composed of a conductive grid. 14. A terminal device with a fingerprint recognition and detection function, comprising the fingerprint recognition and detection component according to any one of claims 1-13. 15. A fingerprint verification method applied to a terminal device having both a push-type fingerprint detection element and a wipe-type fingerprint detection element; it is characterized in that the method comprises: Get the security level of the transaction to be verified; When the acquired security level is the first security level, enabling the push-type fingerprint detection element to perform fingerprint verification; When the obtained security level is the second security level, enabling the scratch-type fingerprint detection element to perform fingerprint verification; Wherein the first security level is different from the second security level.