CN104156709B - Fingerprint identification detection component, terminal device and fingerprint verification method - Google Patents

Abstract

Present disclose provides a kind of fingerprint recognition detection components, terminal device and fingerprint authentication methods.The fingerprint recognition detection components include: push type fingerprint detection element；It wipes and draws formula fingerprint detection element；Security level acquiring unit, for obtaining the security level of affairs to be verified；Verification mode switch unit, for enabling the push type fingerprint detection element and carrying out fingerprint authentication when the security level got is the first security level；And when the security level got is the second security level, enables described wipe and draw formula fingerprint detection element progress fingerprint authentication；Wherein first security level is different from second security level.The disclosure, which both may be implemented to wipe, draws formula fingerprint authentication, and push type fingerprint authentication also may be implemented.

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 current portable terminals are becoming more and more powerful, and such diversified functions are convenient for users. However, while providing more convenience for users, portable terminals carry too much private information. If such portable terminals are lost or stolen, the information will be easily leaked because there is no relevant protection. inconvenience to users. Therefore, it is very necessary to do some security settings on the portable terminal. The current portable terminals mostly 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 leakage 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, resulting in a conflict between security and ease of use.

Fingerprints are composed of uneven skin textures on the surface of fingers, which are unique features of the human body, and their complexity can provide enough 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 identification component forms a conductive circuit on the base substrate. When the finger is in contact with the sensor, the fingerprint pattern is detected and formed by different capacitance values generated by the protrusion of the fingerprint ridge and the depression of the fingerprint valley.

In the prior art, the capacitive fingerprint identification technology includes a swipe-type fingerprint identification technology and a press-type fingerprint identification 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 the detection area is usually small.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to provide a fingerprint identification detection component and a terminal device having the fingerprint identification detection component, which are used to realize the swipe-type fingerprint identification function and the press-type fingerprint identification function at the same time; further, the present disclosure also provides a A fingerprint authentication method.

The fingerprint recognition function is implemented on devices such as portable terminal equipment.

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

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

A fingerprint recognition detection component, characterized in that:

Press-type fingerprint detection element;

Scratch type fingerprint detection element;

The security level acquisition unit is used to acquire the security level of the transaction to be verified;

A verification mode switching unit, configured to enable the pressing fingerprint detection element to perform fingerprint verification when the acquired security level is the first security level; and enable the wiper when the acquired security level is the second 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 swipe-type fingerprint detection element is greater than or equal to the detection width of the press-type fingerprint detection element.

In an example embodiment of the present disclosure,

The press-type fingerprint detection element and the scratch-type fingerprint detection element include a plurality of electrodes;

Some of the electrodes in the plurality of electrodes are shared by the push-type fingerprint detection element and the swipe-type fingerprint detection element.

In an example implementation of the present disclosure, the pressing fingerprint detection element includes:

A row-column matrix composed of a plurality of first electrodes and a plurality of second electrodes, each row includes a plurality of first electrodes or a plurality of second electrodes, each column includes a plurality of first electrodes and a second electrode, and the phase in each column is A pair of adjacent first electrodes and second electrodes form a pressing fingerprint identification unit;

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

In the rows of the row-column matrix composed of second electrodes, the second electrodes are electrically connected to each other;

The scratch-type fingerprint detection element includes:

the row formed by the second electrode;

The third electrodes are spaced apart from each of the rows of the second electrodes to form a plurality of first detection gaps.

In an example 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 pressing fingerprint identification unit; the second detection gap is not greater than half of the center distance of two adjacent fingerprint identification units in a row.

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

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

An insulating layer is provided between the row formed by the second electrode and the overlapping portion of the connection electrode.

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 a sensing electrode or a driving electrode of the push-type fingerprint detection element, and the second electrode is a sense electrode or a drive electrode of the push-type fingerprint detection element. the other of the drive electrodes;

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

In an exemplary 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 example embodiment of the present disclosure, the swipe-type fingerprint detection element further includes:

a reference electrode, disposed opposite the third electrode and on the opposite side of the third electrode from the plurality of rows formed by the second electrodes.

In an example embodiment of the present disclosure, the swipe-type 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 and 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 identification detection function includes any one of the above fingerprint identification detection components.

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

Get the security level of the transaction to be verified;

When the obtained security level is the first security level, enable the press-type fingerprint detection element to perform fingerprint verification;

When the obtained security level is the second security level, enable the wipe-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 identification detection assembly and the terminal device provided with the fingerprint identification detection assembly, since the pressing fingerprint detection element and the swipe fingerprint detection element are integrated, a fingerprint identification detection The component can realize both swipe-type fingerprint verification and press-type fingerprint verification. In yet another example embodiment according to the present disclosure, since the push-type fingerprint detection element and the swipe-type fingerprint detection element share part of the electrode structure, on the one hand, the structure of the fingerprint identification detection assembly can be simplified, and the size of the fingerprint identification detection assembly can be reduced. On the other hand, it can also 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 from the detailed description of example embodiments thereof with reference to the accompanying drawings.

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

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

3 is a cross-sectional view of a fingerprint recognition detection assembly in an embodiment of the present invention;

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

5 is a schematic diagram of a second structure of a fingerprint identification detection component in an embodiment of the present invention;

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

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

FIG. 8 is a flowchart of a fingerprint verification method in an embodiment of the present invention.

Description of reference numbers:

3. 3′ fingerprint recognition detection component

7 protective layer

30 Driver circuit

31 Third electrode

32 Second electrode

33 Reference electrode

34 Dummy Drive Electrode

35 The first detection gap

36 Third detection gap

37 Differential filter

38 Differential Amplifier

39 wires

40 First electrode

41 Connecting the 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, however, can be embodied in various 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 the 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 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 recognition detection component can be arranged in the non-display area S area, or can be arranged in the display area above the S area.

FIG. 2 is a schematic structural diagram of a fingerprint recognition detection assembly according to an example embodiment, which mainly includes a pressing fingerprint detecting element 3b, a swiping fingerprint detecting element 3a, a security level acquiring unit 3c, and a verification mode switching unit 3d.

Among them, the swipe type fingerprint detection element 3a can obtain the user's fingerprint information line by line during the process of the user swiping on it, and finally combine them into complete fingerprint information. Since the area of the swipe type fingerprint detection element 3a for acquiring the user's fingerprint information is the product of the detection width and the user's swipe length, it can acquire abundant fingerprint information. In this exemplary embodiment, the detection width of the swipe-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 embodiment is not limited to this. In addition, since the acquired fingerprint information is rich, the swipe-type fingerprint detection element 3a can be verified by comparing feature points without image comparison.

The press-type fingerprint detection element 3b can scan the fingerprint information of the user at one time or line by line during the process of the user pressing on it, without the need for the user to move a finger. The area of the push-type fingerprint detection element 3b for acquiring 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 obtained by the push-type fingerprint detection element 3b may be less. Therefore, it may not be possible to use the method of comparing feature points. For verification, which requires image alignment, more computational time is required.

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 pressing 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, the swipe-type fingerprint detection element 3a is enabled to perform fingerprint verification; wherein the first security level is different from the second security level.

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

Further, the press-type fingerprint detection element and the swipe-type fingerprint detection element include a plurality of electrodes, for example, a driving electrode and a sensing electrode, 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 swipe-type fingerprint detection element. For example, a common driving electrode or a common sensing electrode and so on. Since the pressing type fingerprint detection element and the swipe type fingerprint detection element share part of the circuit, on the one hand, the structure of the fingerprint identification detection assembly can be simplified, and the volume of the fingerprint identification detection assembly can be reduced; preparation cost.

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

As shown in FIGS. 3 to 7 , the fingerprint recognition detection assembly 3 in this exemplary embodiment includes both a pressing type fingerprint detection element and a swipe type fingerprint detection element. In addition, other structures such as protective layer 7, leads, fingerprint identification chips, and main circuit boards may also be included. For example:

As shown in FIG. 4 , in this exemplary embodiment, the press-type fingerprint detection element includes a matrix of rows and columns 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 column includes a plurality of first electrodes 40 and second electrodes 32 and a pair of adjacent first electrodes and second electrodes in each column may constitute a basic capacitor, each of which is a A simple fingerprint recognition unit. All the press-type fingerprint identification units are distributed in a matrix. In each column of the row-column matrix, the first electrodes 40 of each fingerprint identification unit 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 a sensing electrode of the push-type fingerprint detection element or as a drive electrode of the push-type fingerprint detection element. In this exemplary embodiment, the first electrode 40 is used as a sensing electrode of the 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 respectively.

Further, if each of the first electrodes 40 and the second electrodes 32 is respectively connected with a lead, the complexity of the circuit will be greatly increased; therefore, in this exemplary embodiment, the first electrodes 40 in each row are The connected electrodes 41 are connected in series, and finally the first electrodes 40 in the same row can be connected to one lead. The first electrodes 40 and the connection electrodes 41 in each column may be an integral structure or may be independent structures. Similarly, the second electrodes 32 in each row are connected in series, and finally the second electrodes 32 in the same row can be connected to one lead. In this example embodiment, the second electrodes 32 in each row may be of an integrated structure, and of course, in other example implementations, 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 rows formed by the second electrodes 32 and the overlapping parts of the connecting electrodes 41, An 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 connection electrodes 41, or the row formed by the second electrodes 32 may be below the connection electrodes 41. In this example The embodiment is not limited to this.

Since the driving electrode (the second electrode 32) of one fingerprint identification unit is adjacent to the sensing electrode (the first electrode 40) of the other fingerprint identification unit in the column direction, the sensing electrode of the other fingerprint identification unit may be affected, As a result, it is difficult to accurately judge the fingerprint image from the signals read out on the corresponding sensing electrode columns. This problem can be solved by making half of the center distance D of the adjacent capacitive fingerprint identification units in the column direction larger than the above-mentioned second detection gap 42; as shown in FIG. 5, even if the sensing elements of one fingerprint identification unit are relatively far away from other The sensor element of the fingerprint recognition unit.

Besides, the above problem can also be solved by disposing the first electrodes 40 in every two rows between the second electrodes 32 in two rows, 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 the 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 identification unit is only adjacent to the second electrode 32 in this unit, and not adjacent to another second electrode 32, therefore, the first electrode 40 in different units will not be generated. The problem of the interference between the first electrode 40 and the second electrode 32 is beneficial to precisely locate the unit that generates the fingerprint image.

As shown in FIGS. 4-7 , the swipe-type fingerprint detection element and the press-type fingerprint detection element share the row formed by the second electrodes 32; the swipe-type fingerprint detection element also includes a vertical arrangement (Of course, it can also form a specific angle) the third electrode 31 . In this exemplary embodiment, the third electrode 31 can be used as a sensing electrode of the swipe-type fingerprint detection element, and it can be a strip-shaped electrode in particular. The row constituted by the second electrodes 32 can be used as drive electrodes for the swipe fingerprint detection element. Each of the rows constituted by the second electrodes 32 is opposite to the third electrodes 31 with a distance to form a plurality of first detection gaps 35 . Each row formed by the second electrode 32 and the third electrode 31 can constitute a basic capacitor, and each such capacitor is a simple fingerprint recognition unit.

Although the multiple electrodes of the fingerprint recognition detection assembly 3 shown in FIGS. 4-6 provide satisfactory performance, the swipe fingerprint detection element therein is susceptible to parasitic coupling and noise collected by the human body and from the first detection The effect of interference coupled through the main part of the finger of the fingerprint ridges outside the gap 35 . In order to optimize the accuracy of fingerprint identification and eliminate the coupling interference from the fingerprint ridge portion outside the first detection gap 35, that is, to eliminate differential noise, a plurality of electrodes of the improved fingerprint identification detection assembly 3' is shown in FIG. 6 .

As in FIGS. 4-6 , the swipe-type fingerprint detection element in FIG. 7 includes a plurality of rows 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 driving 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 from the detection plate by a first detection gap 35 . Thus, the plurality of electrodes of the fingerprint recognition detection assembly 3 ′ include 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 energizes the rows formed by the second electrodes 32 with drive signals.

The swipe-type fingerprint detection element may also include a reference electrode 33 and a plurality of dummy driving electrodes 34 (see FIG. 7 ). 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, and are disposed on the opposite side of the reference electrode 33 from the third electrode 31 corresponding to the plurality of rows of the second electrodes 32 .

The swipe fingerprint detection element further includes a reference electrode 33 that can be substantially parallel to and separated from the third electrode 31 . The reference electrode 33 is located on the side of the third electrode 31 opposite the row formed by the second electrode 32 and is thus separated from the row formed by the second electrode 32 by a greater distance than the third electrode 31 . The reference electrode 33 should be spaced from the row formed by the second electrode 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 lengths and widths, 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 with a substantially reduced intensity. 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 proportional to the difference between the sensed signals, due to the relative opposition from the two electrodes on the first detection gap 35 spacing, which is remarkable. However, equally coupled noise and spurious signals can be eliminated by subtracting the signals on both 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 the forward input of differential amplifier 38 via differential filter 37, while reference electrode 33 may be coupled to the inverting input of differential amplifier 38 via differential filter 37. The differential amplifier 38 electronically subtracts the signals on the third electrode 31 and the reference electrode 33 so that noise and spurious signals are eliminated.

The swipe-type fingerprint detection element may further include a dummy driving circuit 30 spaced apart from the reference electrode 33 . As shown in FIG. 6 , the dummy drive circuit 30 may include a substantially parallel dummy drive electrode 34 placed perpendicular to the reference electrode 33 and spaced from the reference electrode 33 by a third detection gap 36 . The parallel dummy drive electrodes 34 are electrically connected to each other by wires 39 and are connected to the drive circuit 30 through wires 39 . In some embodiments, the arrangement of the parallel dummy drive electrodes 34 relative to the reference electrode 33 matches the arrangement of the row of second electrodes 32 relative to the third electrode 31 . Therefore, the width of the parallel dummy drive electrodes 34 , the spacing between the parallel dummy drive electrodes 34 , and the size of the third detection gap 36 can be 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 fingerprint image sensing, one of the rows of second electrodes 32 can be excited by the drive signal, and the remaining rows of second electrodes 32 are coupled to a reference potential, eg, ground. For the example where the swipe fingerprint detection element has rows of second electrodes 32, at any given time, all but one of the rows of second electrodes 32 are of the second electrodes 32 Connected to ground, and at any given moment during image sensing, all parallel dummy drive electrodes 34 of dummy drive circuit 30 are connected to ground. With this arrangement, the noise on the ground conductor is coupled to the third electrode 31 and the reference electrode 33 substantially equivalently. The coupled noise is subtracted by the differential amplifier 38 and thereby cancelled. The fingerprint image signal of interest is detected between the third electrode 31 and the reference electrode 33 and is not canceled 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.

Typically, the size of the first detection gap 35 is smaller than the ridge pitch of a typical fingerprint, and is typically in the range of 25 to 50 μm. In this embodiment, the pitches between adjacent rows composed of the second electrodes 32 are equal to each other and in the range of 50 to 60 μm, and the widths of the rows composed of 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 are in the range of 20 to 40 μm.

In one example of the swipe-type fingerprint detection element, the rows formed by the second electrodes 32 have a width of 25 μm (micrometers), and the pitch between adjacent rows formed by the 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 is 25 μm. The width of the parallel dummy driving electrodes 34 of the dummy driving circuit 30 is 25 μm and the spacing 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 by way of example only and do not limit the scope of the invention.

The above-mentioned materials of the first electrode 40 , the second electrode 32 , the third electrode 31 and the connection electrode 41 may be the same or different. The materials for forming the first electrode 40, the second electrode 32, the third electrode 31 and the connection electrode 41 can be selected from ITO (indium tin oxide), or metal elemental particles such as one or two of gold, silver, copper, zinc, and aluminum. more than one, metal alloy conductive materials, graphene, carbon nanotube materials, nano-conductive materials 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 conductive meshes. By adopting the conductive mesh, the cost is reduced, but the good effect of fingerprint identification can still be achieved. In addition, the fingerprint detection and identification assembly may further include lead wires (not shown) connected to the swipe-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 conductive meshes.

Further, this exemplary embodiment also provides a terminal device with a fingerprint recognition detection function, the terminal device has a display screen and any of the above-mentioned fingerprint recognition detection components, and the display screen may be a touch screen or a touch screen. for non-touch screen. With the fingerprint detection and identification component in this example implementation, the terminal device can realize both swipe-type fingerprint identification and push-type fingerprint identification. It is easy to understand that, the fingerprint recognition detection component in this exemplary embodiment can also be applied to a terminal device without a display screen, and therefore is not limited to this.

In view of the fact that there are two different fingerprint identification methods: wipe-type fingerprint identification technology and press-type fingerprint identification technology. Therefore, the present exemplary embodiment also provides a fingerprint verification method accordingly, and the fingerprint verification method is applied to the above-mentioned terminal device having both a swipe-type fingerprint detection element and a press-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 obtained security level is the first security level, enable the wipe-type fingerprint detection element to perform fingerprint verification;

S14-S15. When the obtained security level is the second security level, enable the press-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 in the process of mobile payment, the system will determine that the transaction is a small-amount payment transaction or a large-amount payment transaction. When it is judged that the transaction is a small-amount payment transaction, the security level of the current transaction is obtained as the first security level, and at this time, the swipe-type fingerprint detection element can be enabled through the above-mentioned control unit to perform fingerprint verification. When it is determined that the transaction is a large-amount payment transaction, the security level of the current transaction is obtained as the second security level, and at this time, the press-type fingerprint detection element can be activated by the above-mentioned control unit to perform fingerprint verification.

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

It can be seen from the above that, with the fingerprint verification method provided by this example embodiment, when performing transaction verification with a lower security level, it can be completed by a wipe-type fingerprint detection element; when performing transaction verification with a higher security level, it can be performed by The press-type fingerprint detection element is completed.

The present disclosure has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples of implementing the present disclosure. It must be noted 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 fall within the scope of patent protection of the present disclosure.

Claims (13)

1. a kind of fingerprint recognition detection components, it is characterised in that:

Push type fingerprint detection element；

It wipes and draws formula fingerprint detection element；

Security level acquiring unit, for obtaining the security level of affairs to be verified；

Verification mode switch unit, for enabling the push type and referring to when the security level got is the first security level Line detecting element carries out fingerprint authentication；And when the security level got is the second security level, enables the wiping and draw a formula Fingerprint detection element carries out fingerprint authentication；

Wherein first security level is different from second security level；

It includes multiple electrodes that a formula fingerprint detection element is drawn in the push type fingerprint detection element and wiping；

Partial electrode in the multiple electrode is shared by the push type fingerprint detection element with a stroke formula fingerprint detection element is wiped；

Described wipe draws detection of the detection width of formula fingerprint detection element more than or equal to the push type fingerprint detection element Width.

2. fingerprint recognition detection components according to claim 1, which is characterized in that the push type fingerprint detection element packet It includes:

The line-column matrix being made of plurality of first electrodes and the plurality of second electrodes, every row include multiple first electrodes or multiple Two electrodes, each column include adjacent pair first electrode and second electrode group in multiple first electrodes and second electrode and each column At a push type fingerprint identification unit；

In each column of the line-column matrix, the first electrode of each fingerprint identification unit is electrically connected to each other；

In the row that the line-column matrix is made of second electrode, the second electrode is electrically connected to each other；

A formula fingerprint detection element is drawn in the wiping

The row being made of second electrode；

Third electrode, with it is each it is described be made of second electrode it is separatedly opposite to form multiple first detector gaps in the ranks.

3. fingerprint recognition detection components according to claim 2, which is characterized in that the row that is made of first electrode and by The alternate setting of row that two electrodes are constituted；

The second detector gap is formed between first electrode and second electrode in each push type fingerprint identification unit；Described Half of two detector gaps no more than two neighboring fingerprint identification unit centre distance in a column.

4. fingerprint recognition detection components according to claim 2, which is characterized in that in each fingerprint identification unit column, The first electrode of adjacent fingerprint recognition unit and the setting order of second electrode are opposite.

5. fingerprint recognition detection components according to claim 2, which is characterized in that quilt between each column first electrode Connection electrode series connection；

The row being made of second electrode is provided with insulating layer between the part Chong Die with the connection electrode.

6. fingerprint recognition detection components according to claim 5, which is characterized in that the insulating layer include silica or Organic insulating material.

7. fingerprint recognition detection components according to claim 2, which is characterized in that the first electrode is the push type One of the induction electrode of fingerprint detection element or driving electrodes, the second electrode are the sense of the push type fingerprint detection element Answer the another of electrode or driving electrodes；

The second electrode is the driving electrodes wiped and draw formula fingerprint detection element, and the third electrode is that the formula of drawing of wiping refers to The induction electrode of line detecting element.

8. fingerprint recognition detection components according to claim 2, which is characterized in that the first electrode, second electrode, Three electrodes and connection electrode include metallic particles, graphene, carbon nanotube or conductive polymer material.

9. fingerprint recognition detection components according to claim 2, which is characterized in that described wipe draws formula fingerprint detection element also Include:

Reference electrode, is oppositely arranged with the third electrode and is located at the multiple of the third electrode and described be made of second electrode The opposite side of row.

10. fingerprint recognition detection components according to claim 9, which is characterized in that described wipe draws formula fingerprint detection element Further include:

A plurality of illusory driving electrodes, a plurality of illusory driving electrodes are arranged side by side and are electrically connected to each other, a plurality of illusory drive Moving electrode is corresponding with multiple rows being made of the second electrode being set to the reference electrode with the third electrode phase Anti- side.

11. fingerprint recognition detection components according to claim 2, which is characterized in that the first electrode, second electrode with And pattern at least part that third electrode is formed is made of conductive grid.

12. a kind of terminal device with fingerprint recognition detection function, including as described in any one of claim 1-11 Fingerprint recognition detection components.

13. a kind of fingerprint authentication method draws formula fingerprint detection element applied to having push type fingerprint detection element simultaneously and wiping Terminal device；It is characterized in that, which comprises

Obtain the security level of affairs to be verified；

When the security level got is the first security level, enables the push type fingerprint detection element and carry out fingerprint inspection Card；

When the security level got is the second security level, enables described wipe and draw formula fingerprint detection element progress fingerprint inspection Card；

Wherein first security level is different from second security level；

It includes multiple electrodes that a formula fingerprint detection element is drawn in the push type fingerprint detection element and wiping；

Partial electrode in the multiple electrode is shared by the push type fingerprint detection element with a stroke formula fingerprint detection element is wiped.