CN212411207U - Fingerprint module, display device and electronic equipment - Google Patents

Abstract

The application discloses fingerprint module, display device and electronic equipment. The fingerprint module comprises first sensing electrodes, driving electrodes and second sensing electrodes which are sequentially arranged along a first direction at intervals, wherein the first sensing electrodes are provided with M first sensing sub-electrodes at intervals along a second direction, the second direction is perpendicular to the first direction, M is an integer larger than 1, the driving electrodes are provided with M driving sub-electrodes at intervals along the second direction, and the second sensing electrodes are provided with M second sensing sub-electrodes at intervals along the second direction; the M first sensing sub-electrodes correspond to the M driving sub-electrodes one by one, and each first sensing sub-electrode and the corresponding driving sub-electrode form a first capacitance structure; the M second sensing sub-electrodes correspond to the M driving sub-electrodes one by one, and each second sensing sub-electrode and the corresponding driving sub-electrode form a second capacitance structure. The application provides a fingerprint module's identification rate is higher to improve fingerprint module's identification performance.

Description

Fingerprint module, display device and electronic equipment

Technical Field

The application relates to the technical field of fingerprint identification, especially, relate to a fingerprint module, display device and electronic equipment.

Background

Certain biometric features of the human body, such as fingerprints, are unique features of the human body and their complexity may provide sufficient features for identification. Fingerprint identification technology is the most mature and cheap biological characteristic identification technology at present, and is widely applied to various electronic devices.

The uneven lines of the skin on the surface of the finger consist of ridge line patterns, the fingerprint identification realizes identity identification by utilizing the characteristics of uniqueness and stability of the fingerprint, and the fingerprint does not need to be memorized by a user. With the development of fingerprint identification technology and the importance of network security, fingerprint identification places more and more importance on the identification accuracy.

SUMMERY OF THE UTILITY MODEL

This application is lower based on the identification rate of fingerprint module, provides the higher fingerprint module of an identification rate to improve the recognition performance of fingerprint module.

In a first aspect, the present application provides a fingerprint module. The fingerprint module comprises N rows of sensing units arranged along a first direction, wherein N is an integer greater than or equal to 1, each row of sensing units comprises first sensing electrodes, driving electrodes and second sensing electrodes which are sequentially arranged along the first direction at intervals, the first sensing electrodes are arranged along a second direction at intervals, M first sensing sub-electrodes are arranged along the second direction, the second direction is perpendicular to the first direction, M is an integer greater than 1, the driving electrodes are arranged along the second direction at intervals, and M second sensing sub-electrodes are arranged along the second direction at intervals;

the M first sensing sub-electrodes correspond to the M driving sub-electrodes one by one, and each first sensing sub-electrode and the corresponding driving sub-electrode form a first capacitance structure; the M second sensing sub-electrodes correspond to the M driving sub-electrodes one to one, and each second sensing sub-electrode and the corresponding driving sub-electrode form a second capacitance structure.

In one embodiment, the fingerprint module further includes a processor, a first sensing line, a second sensing line and a driving line, the processor is configured to process data of the sensing units in N rows, the first sensing line is led out from the first sensing electrode and electrically connected to the processor, the second sensing line is led out from the second sensing electrode and electrically connected to the processor, and the driving line is led out from the driving electrode and electrically connected to the processor.

In one embodiment, each of the driving electrodes includes a first driving electrode and a second driving electrode, the first driving electrode and the second driving electrode are spaced apart along the first direction, and the first driving electrode is located between the first sensing electrode and the second driving electrode.

In one embodiment, each of the driving electrodes further includes a driving electrode connecting line, and one end of the driving electrode connecting line is connected to the first driving electrode, and the other end of the driving electrode connecting line is connected to the second driving electrode.

In one embodiment, the driving lines are respectively led out from each first driving electrode and each second driving electrode, and are connected to the processor in a bus mode.

In one embodiment, the capacitance values of the first and second capacitive structures change upon contact with an external medium, the contact including indirect contact.

In one embodiment, the external medium is a finger.

In a second aspect, the present application provides a display device. The display device comprises a cover plate, a display module and the fingerprint module, wherein the display module and the fingerprint module are positioned on the same side of the cover plate, and the display module and the fingerprint module are arranged on the same layer; or, the display module is located the fingerprint module is kept away from one side of apron.

In one embodiment, the display device further comprises an optical adhesive, the optical adhesive is located between the cover plate and the display module, one surface of the optical adhesive is attached to the cover plate, and the fingerprint module is located between the optical adhesive and the display module; or, the fingerprint module is located the optical cement with between the apron.

In an embodiment, the fingerprint module is transparent module, the fingerprint module is located the display module assembly with between the apron.

In one embodiment, the display module comprises a fingerprint sensing area, and the fingerprint sensing area corresponds to the fingerprint module in position; the fingerprint sensing area and/or the fingerprint module are/is smaller than a human fingerprint; the display module displays a reminding interface used for indicating the sliding finger.

In one embodiment, the display device comprises a timer and a processor, wherein the timer is used for instructing the fingerprint module to acquire fingerprint information segments in a time sharing mode; and the processor synthesizes the fingerprint information segments into fingerprint information.

In a third aspect, the present application further provides an electronic device. Electronic equipment includes the casing and as above the display module assembly, the display module assembly install in the casing.

In this application embodiment, the fingerprint module is through using the sensing unit that is equipped with triplex row electrode (first sensing electrode, drive electrode and second sensing electrode) to expand for minimum basic unit, and fingerprint information can be acquireed to first sensing line and second sensing line homoenergetic in every sensing unit, make fingerprint module once scan can collect two at least frames of fingerprint data, can improve the identification rate of fingerprint module for the contrast reference each other, reduce the miscarriage rate of fingerprint module, thereby improve the identification performance of fingerprint module.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a display device of the electronic apparatus shown in FIG. 1 in a first embodiment;

FIG. 3 is a schematic structural diagram of a display device of the electronic apparatus shown in FIG. 1 in a second embodiment;

FIG. 4 is a schematic structural diagram of a display device of the electronic apparatus shown in FIG. 1 in a third embodiment;

FIG. 5 is a schematic top view of the fingerprint module of FIG. 2 in a first embodiment;

FIG. 6 is a schematic top view of the fingerprint module of FIG. 2 in a second embodiment;

fig. 7 is a schematic top view of the fingerprint module shown in fig. 2 in a third embodiment.

Detailed Description

Technical solutions in embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application; fig. 2 is a schematic structural diagram of a display device of the electronic apparatus shown in fig. 1 in a first embodiment. The embodiment of the application provides an electronic device 100. The electronic device 100 may be a mobile phone, a tablet computer, an e-reader, a notebook computer, a vehicle-mounted device, a wearable device, or the like. In the embodiment of the present application, the electronic device 100 is described as a mobile phone.

The electronic apparatus 100 includes a display device 10 and a housing 20. The display device 10 is used to display a screen. The display device 10 is mounted to the housing 20. The display device 10 includes a cover plate 11, a display module 12 and an optical adhesive 13. The optical cement 13 is located between the cover plate 11 and the display module 12, and one surface of the optical cement 13 is attached to the cover plate 11. It will be appreciated that the cover plate 11 is connected to the display device 10 by means of an optical glue 13. The optical adhesive 13 is generally made of a transparent optical adhesive (OCA) material.

The display module 12 may be any product or component with a display function. The display module 12 may include any one of a variety of panels, for example: a Light Emitting Diode (LED) panel, a Liquid Crystal Display (LCD) panel, an Organic Light Emitting Diode (OLED) panel, a quantum dot light emitting diode (QLED) panel, or a micro-scale light emitting diode (uLED) panel.

Referring to fig. 2 and fig. 3 together, fig. 3 is a schematic structural diagram of a display device 10 of the electronic apparatus shown in fig. 1 in a second embodiment. The display device 10 further comprises a fingerprint module 14. The fingerprint module 14 is used for collecting image information of an external medium. In the embodiment of the present application, the description is given by taking the external medium as a finger as an example. That is, the fingerprint module 14 is used for collecting images of fingers. The display module 12 and the fingerprint module 14 are located on the same side of the cover plate 11. The cover plate 11 has the functions of impact resistance, scratch resistance, oil stain resistance, fingerprint resistance, light transmittance enhancement and the like. The cover plate 11 protects the display module 12 and the fingerprint module 14. It will be appreciated that the cover 11 faces the user when the user is using the electronic device 100.

In one embodiment, the fingerprint module 14 is located between the display module 12 and the cover plate 11. That is, the fingerprint module 14 is located on a side of the display module 12 close to the cover plate 11. The fingerprint module 14 can be formed on the surface of the cover plate 11 close to one side of the display module 12, so that the fingerprint module 14 is located between the cover plate 11 and the optical cement 13; or, fingerprint module 14 can be formed at the surface that display module 12 is close to apron 11 one side for fingerprint module 14 is located between display module 12 and the optical cement 13, and this application does not limit. As shown in fig. 2, the fingerprint module 14 is located between the optical adhesive 13 and the cover plate 11. As shown in fig. 3, the fingerprint module 14 is located between the optical adhesive 13 and the display module 12.

In this embodiment, fingerprint module 14 is located display module 12 and is close to one side of apron 11 for fingerprint module 14 is located the one side that is closer to the outside medium, has reduced the interval between outside medium and the fingerprint module 14, thereby is favorable to improving the accuracy of fingerprint module 14 information gathering.

Wherein, the fingerprint module 14 is a transparent module. In this embodiment, fingerprint module 14 is transparent module, avoids fingerprint module 14 to be located the upper strata structure of display module 12 and influences the display effect of display module 12 often to be favorable to guaranteeing the display quality of display module 12.

In one embodiment, the display device 10 further includes a touch module 15. The touch module 15 is located between the display module 12 and the cover plate 11. The cover plate 11 and the touch module 15 are both located on the light emitting side of the display module 12. As shown in fig. 2, in one embodiment, the touch module 15 can be located below the optical adhesive 13. As shown in fig. 3, in another embodiment, the touch module 15 can be located on an upper layer of the optical adhesive 13, which is not limited in the present application.

The touch module 15 is used for sensing a touch operation of an external medium. The external medium may be a user's finger, a stylus, etc. In the embodiment of the present application, the touch module 15 is located between the display module 12 and the cover plate 11, which can reduce the distance between the touch module 15 and the external medium, thereby improving the touch sensing performance. In other embodiments, the touch module 15 can also be integrated into the display module 12, for example, the display module 12 can be an in-cell (in-cell) touch display screen, so that the display device 10 is thinner and lighter. The embodiment of the present application does not strictly limit the specific position of the touch module 15.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a display device 10 of the electronic apparatus shown in fig. 1 according to a third embodiment. As shown in fig. 4, in one embodiment, the display module 12 and the fingerprint module 14 are disposed on the same layer. That is, the fingerprint module 14 is integrated in the display module 12. The display module 12 includes an array substrate 121, a display layer 122, and a box substrate 123 stacked in sequence. The array substrate 121 is located on a side of the display module 12 away from the cover plate 11. The display layer 122 is used to display a screen. The case substrate 123 may be an upper cover plate that encapsulates the display layer 122. The fingerprint module 14 can be located between the array substrate 121 and the display layer 122, and also can be located between the display layer 122 and the opposite-box substrate 123, which is not limited in the present application.

In this embodiment, the display module 12 and the fingerprint module 14 are disposed on the same layer, that is, the fingerprint module 14 is integrated in the display module 12, so that the process of the fingerprint module 14 can be reused with the process of the display module 12, thereby simplifying the process steps of the display device 10. And, display module assembly 12 and 14 same layer settings of fingerprint module assembly for display module assembly 12 and 14 thickness direction multiplex of fingerprint module assembly, thereby be favorable to reducing display device 10's thickness.

In one embodiment, the fingerprint module 14 is located in a non-display area of the display device 10, so as to prevent the fingerprint module 14 and the display module 12 from being arranged on the same layer, and increase the non-display area of the display device 10. In other embodiments, the display module 12 is located on a side of the fingerprint module 14 away from the cover plate 11. That is, the present application is not limited to the specific location of the fingerprint module 14 in the display device 10.

Further, referring to fig. 1 and fig. 2, the display module 12 includes a fingerprint sensing area 110. Fingerprint induction zone 110 corresponds with fingerprint module 14 position. Wherein, fingerprint induction zone 110 corresponds with the position of fingerprint module 14, including but not limited to fingerprint induction zone 110 overlaps with the projection of fingerprint module 14, or fingerprint induction zone 110's projection falls into the inside of fingerprint module 14 projection. Wherein, fingerprint induction zone 110 and/or fingerprint module 14 are less than human fingerprint.

Wherein the display device 10 further comprises a processor (schematically shown). The processor synthesizes the fingerprint information segments into fingerprint information. It can be understood, the fingerprint module 14 that this application provided is slidingtype fingerprint detection module, and human fingerprint is at gliding in-process, and fingerprint module 14 gathers a plurality of fingerprint information sections that the fingerprint is located fingerprint induction zone 110, and a plurality of fingerprint information sections are finally integrated in order to obtain complete fingerprint image to the treater.

In this application embodiment, the fingerprint module 14 of slidingtype can gather the fragment of each difference of fingerprint for the fingerprint image area of fingerprint module 14 collection is bigger, thereby is favorable to improving 14 recognition algorithm of fingerprint module. Moreover, the fingerprint sensing area 110 of the sliding fingerprint module 14 is smaller, which is beneficial to reducing the cost of the sliding fingerprint module 14.

In one embodiment, the fingerprint sensing area 110 is located in the display area of the display module 12. It can be understood that, in this embodiment, the fingerprint sensing area 110 is located in the display area of the display device 10, and the fingerprint module 14 can cooperate with an application program in the electronic device 100, so that the electronic device 100 can display information such as the position of the fingerprint sensing area 110, the scanning direction of the fingerprint module, or whether the fingerprint identification is successful, thereby improving the man-machine interaction performance of the electronic device.

In one embodiment, the display module 12 displays a reminder interface 120 for indicating a sliding finger. For example, as shown in fig. 1, the reminder interface 120 displays "slide up and down" to prompt the user to slide the finger up and down when verifying the fingerprint, so that the fingerprint module 14 scans the fingerprint. The reminder interface 120 can also display other words, and this application is only an example and is not limited.

In this embodiment, when the finger touches the fingerprint sensing area 110, the display module 12 displays the reminding interface 120 of the sliding finger, so that the user can perform corresponding operations according to the reminding interface 120, thereby improving the reliability of fingerprint identification.

In one embodiment, the display device 10 further includes a timer (shown schematically). The timer is used for instructing fingerprint module 14 timesharing collection fingerprint information section. The processor synthesizes the fingerprint information segments into fingerprint information.

In this application embodiment, fingerprint module 14 is used for gathering the fingerprint information section under the instruction of timer for each fragment of fingerprint can be gathered in order to fingerprint module 14, thereby is favorable to improving the accuracy that fingerprint module 14 gathered fingerprint information.

Further, with continuing reference to fig. 5, fig. 5 is a schematic top view of the fingerprint module 14 shown in fig. 2 according to a first embodiment. The fingerprint module 14 includes N rows of sensing units 40 arranged along a first direction, where N is an integer greater than or equal to 1. Each row of sensing units 40 includes a first sensing electrode 41, a driving electrode 42, and a second sensing electrode 43 sequentially arranged at intervals along a first direction. As shown in fig. 5, in the present embodiment, N is described as 1, but in other embodiments, N may be 2 or another positive integer.

The first sensing electrodes 41 are arranged along the second direction at intervals, and M is an integer greater than 1, and the M first sensing sub-electrodes 410 are arranged along the second direction at intervals. The second direction is arranged to intersect the first direction. The second direction and the first direction may be, but not limited to, vertically arranged. As shown in fig. 5, the first direction is denoted by X and the second direction is denoted by Y. The driving electrodes 42 are arranged M driving sub-electrodes 420 at intervals along the second direction. The second sensing electrodes 43 are arranged at intervals of M second sensing sub-electrodes 430 along the second direction. As shown in fig. 5, the numbers and shapes of the first sensing sub-electrode 410, the second sensing sub-electrode 430, and the driving sub-electrode 420 provided herein are merely examples, and the present disclosure is not limited thereto.

The M first sensing sub-electrodes 410 correspond to the M driving sub-electrodes 420 one to one, and each of the first sensing sub-electrodes 410 and the corresponding driving sub-electrode 420 form a first capacitance structure. The M second sensing sub-electrodes 430 correspond to the M driving sub-electrodes 420 one to one, and each second sensing sub-electrode 430 and the corresponding driving sub-electrode 420 form a second capacitance structure.

In the embodiment of the present application, fingerprint module 14 is through the sensing unit 40 that uses to be equipped with three rows of electrodes to minimum basic unit expands, and the first sensing line and the second sensing line homoenergetic in every sensing unit 40 acquire fingerprint information, make fingerprint module 14 once scan can collect two at least frames of fingerprint data, can improve fingerprint module 14's the identification rate for the contrast reference each other, reduce fingerprint module 14's miscarriage rate, thereby improve fingerprint module 14's identification performance.

The capacitance values of the first capacitor structure and the second capacitor structure can change when contacting an external medium. The external medium is a finger. Contacting includes direct contacting or indirect contacting. It can be understood that a first capacitance is formed between the first sensing sub-electrode 410 and the driving sub-electrode 420 due to a capacitance effect, that is, the first sensing sub-electrode 410 and the driving sub-electrode 420 respectively form positive and negative poles of the first capacitance. A second capacitance is formed between the second sensing sub-electrode 430 and the driving sub-electrode 420 due to a capacitance effect, that is, the second sensing sub-electrode 430 and the driving sub-electrode 420 respectively form positive and negative poles of the first capacitance.

When a finger presses on the fingerprint module 14, the coupling between the first sensing sub-electrode 410 and the driving sub-electrode 420 and the coupling between the second sensing sub-electrode 430 and the driving sub-electrode 420 are affected, so that the capacitance of the first capacitor and the capacitance of the second capacitor are changed. Because the finger is when contacting with fingerprint module 14, the actual distance between convex ridge department and valley department and fingerprint module 14 is different in the fingerprint for convex ridge department and valley produce different capacitance values in the fingerprint, thereby draw out the line venation of finger, then compare through the fingerprint with the prestore, can realize the appraisal to user's identity.

In one embodiment, the fingerprint module 14 further includes a processor 44, a first sensing line 45, a second sensing line 46, and a driving line 47. The first sensing line 45 is drawn from the first sensing electrode 41 and electrically connected to the processor 44. A second sensing line 46 leads from the second sensing electrode 43 and is electrically connected with the processor 44. A drive line 47 leads from the drive electrode 42 and is electrically connected to the processor 44. The processor 44 is used for processing the data of the N rows of sensing units 40. The processor 44 may include a circuit board and a chip connected to the circuit board. It will be appreciated that the processor 44 receives the capacitance signals of the first sensing electrode 41, the second sensing electrode 43 and the driving electrode 42, and will process the capacitance signals to form image information.

In the embodiment of the present application, when the fingerprint module 14 adopts the sensing units 40 formed by three rows of electrodes, the number of the electrodes (the first sensing electrode 41, the second sensing electrode 43, and the driving electrode 42) is reduced, so that the total number of the leads (the first sensing line 45, the second sensing line 46, and the driving line 47) corresponding to the electrodes is reduced, and the IO interfaces connected to the leads on the processor 44 are effectively reduced.

With continued reference to fig. 5, in one embodiment, the gap between the first sensing electrode 41 and the driving electrode 42 is a first distance. The first distance is identified by a. The first distance is in a range of 40 microns to 100 microns. Wherein the first distance comprises an endpoint value of 40 microns and 100 microns.

In the embodiment of the present application, since the distance between the ridges and the valleys in the fingerprint is 0.1 mm to 1 mm, the gap between the first sensing electrode 41 and the driving electrode 42 is less than or equal to 100 μm, so that at least one ridge or valley can be filled between the first sensing electrode 41 and the driving electrode 42, and the capacitance value of the first capacitor structure changes. The gap between the first sensing electrode 41 and the driving electrode 42 is greater than or equal to 40 micrometers, so that mutual interference caused by the excessively small gap between the first sensing electrode 41 and the driving electrode 42 is avoided, and the detection quality of the fingerprint module 14 is ensured.

In one embodiment, the length of the sensing unit 40 in the first direction is a second distance. The second distance is identified by L. The second distance is in a range of 8 millimeters to 18 millimeters. Wherein the second distance comprises 8 mm and 18 mm.

In the embodiment of the present application, the length of the sensing unit 40 is in the range of 8 mm to 18 mm, so that the length of the sensing unit 40 can adapt to the widths of different fingers, the fingerprint information of the fingers can be effectively captured, and the identification performance of the fingerprint module 14 can be improved.

In one embodiment, the distance between two adjacent sensing sub-electrodes is a third distance. The third distance is identified by B. It will be appreciated that the third distance is the spacing between the midpoints of two adjacent sensing sub-electrodes. The third distance is in a range of 40 microns to 100 microns. Wherein the third distance comprises 40 microns and 100 microns.

In the embodiment of the present application, the distance between two adjacent sensing sub-electrodes is in the range of 40 micrometers to 100 micrometers, so as to avoid the accuracy of detecting the fingerprint module 14 due to the excessively large distance between the sensing sub-electrodes, and also avoid the problem that the number of the sensing sub-electrodes is large due to the excessively small distance between two adjacent sensing sub-electrodes, so that the number of the sensing sub-electrodes is effectively reduced on the premise of ensuring the detection performance of the fingerprint module 14. For example, when the length of the sensing unit 40 is 10 mm, the distance between any two adjacent sensing sub-electrodes is 50 micrometers, and accordingly the number of the sensing sub-electrodes per row is 200.

Referring to fig. 6, fig. 6 is a schematic top view of the fingerprint module 14 shown in fig. 2 according to a second embodiment. The structure of the fingerprint module 14 shown in this embodiment can be combined with the structure of any one of the fingerprint modules 14 shown in fig. 3 and 4. Most technical solutions of the fingerprint module 14 in this embodiment that are the same as the fingerprint module 14 in the first embodiment are not repeated. The second embodiment differs from the first embodiment in that:

each driving electrode 42 includes a first driving electrode 421 and a second driving electrode 422. The first driving electrode 421 and the second driving electrode 422 are disposed at an interval along the first direction, and the first driving electrode 421 is located between the first sensing electrode 41 and the second driving electrode 422. It can be understood that the first driving electrode 421 and the first sensing electrode 41 form a first capacitance structure. The second driving electrode 422 and the second sensing electrode 43 form a second capacitance structure.

In this embodiment, the driving electrode 42 includes the first driving electrode 421 and the second driving electrode 422 that are disposed at an interval, so as to reduce the effective driving area of the driving electrode 42 and avoid the interference caused by the overlarge effective driving area of the driving electrode 42, thereby improving the reliability of the fingerprint module 14.

In one embodiment, each drive electrode 42 further includes a drive electrode link 423. One end of the driving electrode connecting line 423 is connected to the first driving electrode 421, and the other end is connected to the second driving electrode 422. It can be understood that the first driving electrode 421 and the second driving electrode 422 which are separately disposed in each column of driving electrodes 42 are electrically connected through the driving electrode connecting line 423.

In the embodiment of the present application, the first driving electrode 421 and the second driving electrode 422 are electrically connected through the driving electrode connecting line 423, so as to prevent the first driving electrode 421 and the second driving electrode 422 from being respectively provided with the traces electrically connected to the processor 44, thereby reducing the number of the traces led out from the fingerprint module 14 to the processor 44.

Referring to fig. 7, fig. 7 is a schematic top view of the fingerprint module 14 shown in fig. 2 according to a third embodiment. The structure of the fingerprint module 14 shown in this embodiment can be combined with the structure of any one of the fingerprint modules 14 shown in fig. 3 and 4. Most technical solutions of the fingerprint module 14 in this embodiment that are the same as the fingerprint module 14 in the foregoing embodiment are not repeated. The third embodiment differs from the previous embodiments in that:

the driving lines 47 are respectively led out from each first driving electrode 421 and each second driving electrode 422, and are connected to the processor 44 through buses. As shown in fig. 7, each of the sensing units 40 further includes a driving trace 440. The driving trace 440 is disposed between the first driving electrode 421 and the second driving electrode 422, and is electrically connected to the M driving sub-electrodes 420.

In the embodiment of the present application, M driving sub-electrodes 420 in the driving electrode 42 are connected by a driving trace 440, so that the M driving sub-electrodes 420 are electrically connected, and finally the bus is connected to the processor 44, thereby avoiding that the M driving sub-electrodes 420 are electrically connected to the processor 44 by traces, and further reducing the IO interfaces on the processor 44 for connecting the leads.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the methods and their core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (13)

1. A fingerprint module is characterized by comprising N rows of sensing units arranged along a first direction, wherein N is an integer greater than or equal to 1, each row of sensing units comprises first sensing electrodes, driving electrodes and second sensing electrodes which are sequentially arranged along the first direction at intervals, the first sensing electrodes are arranged along a second direction at intervals, M first sensing sub-electrodes are arranged along the second direction, the second direction is perpendicular to the first direction, M is an integer greater than 1, the driving electrodes are arranged along the second direction at intervals, M driving sub-electrodes are arranged along the second direction, and M second sensing sub-electrodes are arranged along the second direction at intervals;

the M first sensing sub-electrodes correspond to the M driving sub-electrodes one by one, and each first sensing sub-electrode and the corresponding driving sub-electrode form a first capacitance structure; the M second sensing sub-electrodes correspond to the M driving sub-electrodes one to one, and each second sensing sub-electrode and the corresponding driving sub-electrode form a second capacitance structure.

2. The fingerprint module of claim 1, further comprising a processor for processing N rows of data for the sensing units, a first sensing line, a second sensing line, and a driving line, wherein the first sensing line is coupled to the first sensing electrode and electrically connected to the processor, the second sensing line is coupled to the second sensing electrode and electrically connected to the processor, and the driving line is coupled to the driving electrode and electrically connected to the processor.

3. The fingerprint module of claim 2, wherein each of the driving electrodes comprises a first driving electrode and a second driving electrode, the first driving electrode and the second driving electrode are spaced apart along the first direction, and the first driving electrode is located between the first sensing electrode and the second driving electrode.

4. The fingerprint module of claim 3, wherein each of the driving electrodes further comprises a driving electrode connecting line, one end of the driving electrode connecting line is connected to the first driving electrode, and the other end of the driving electrode connecting line is connected to the second driving electrode.

5. The fingerprint module of claim 4, wherein the driving lines are respectively led out from each of the first driving electrodes and each of the second driving electrodes, and are bussed to the processor.

6. The fingerprint module of claim 1, wherein the capacitance values of the first and second capacitive structures change upon contact with an external medium, the contact comprising an indirect contact.

7. The fingerprint module of claim 6, wherein the external medium is a finger.

8. A display device, comprising a cover plate, a display module and the fingerprint module set according to any one of claims 1 to 7, wherein the display module set and the fingerprint module set are located on the same side of the cover plate, and the display module set and the fingerprint module set are arranged on the same layer; or, the display module is located the fingerprint module is kept away from one side of apron.

9. The display device according to claim 8, wherein the display device further comprises an optical adhesive, the optical adhesive is located between the cover plate and the display module, one surface of the optical adhesive is attached to the cover plate, and the fingerprint module is located between the optical adhesive and the display module; or, the fingerprint module is located the optical cement with between the apron.

10. The display device according to claim 8, wherein the fingerprint module is a transparent module, and the fingerprint module is located between the display module and the cover plate.

11. The display device according to claim 10, wherein the display module comprises a fingerprint sensing area corresponding to the fingerprint module; the fingerprint sensing area and/or the fingerprint module are/is smaller than a human fingerprint; the display module displays a reminding interface used for indicating the sliding finger.

12. The display device according to claim 11, wherein the display device comprises a timer and a processor, wherein the timer is used for instructing the fingerprint module to acquire the fingerprint information segments in a time-sharing manner; and the processor synthesizes the fingerprint information segments into fingerprint information.

13. An electronic device comprising a housing and the display module according to any one of claims 8 to 12, wherein the display module is mounted on the housing.

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