WO2020019223A1

WO2020019223A1 - Optical fingerprint sensor module, and forming method and operating method therefor

Info

Publication number: WO2020019223A1
Application number: PCT/CN2018/097147
Authority: WO
Inventors: 凌严; 朱虹
Original assignee: 上海箩箕技术有限公司
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2020-01-30

Abstract

Disclosed are an optical fingerprint sensor module, and a forming method and operating method therefor. The optical fingerprint sensor module comprises: an optical fingerprint sensor, the optical fingerprint sensor comprising a photosensitive pixel unit array and N rows of first driving lines, wherein the photosensitive pixel unit array comprises N rows of photosensitive pixel units, a first driving line in the ith row is connected to all photosensitive pixel units in the ith row respectively, the first driving lines are used for switching on the photosensitive pixel units row by row, and N is an integer greater than or equal to 1; and an OLED display panel located on the optical fingerprint sensor, the OLED display panel comprising a self-illumination display array and M rows of second driving lines, wherein the self-illumination display array comprises M rows of self-illumination display units, a second driving line in the jth row is connected to all self-illumination display units in the jth row respectively, an extension direction of the second driving lines and an extension direction of the first driving lines have an acute included angle therebetween, and the acute included angle is greater than or equal to 0 degrees and less than or equal to 10 degrees. The performance of the optical fingerprint sensor module is improved.

Description

Optical fingerprint sensor module, forming method and working method thereof

Technical field

The invention relates to the field of optical fingerprint recognition, and in particular, to an optical fingerprint sensor module, a forming method and a working method thereof.

Background technique

Fingerprint imaging recognition technology is a technology that collects a fingerprint image of a human body through an optical fingerprint sensor, and then compares it with the existing fingerprint imaging information in the system to determine whether it is correct or not, thereby achieving identity recognition. Due to its convenience and uniqueness of human fingerprints, fingerprint imaging recognition technology has been widely used in various fields, such as security inspection areas such as public security bureaus and customs, building access control systems, and consumer products such as personal computers and mobile phones.

The imaging methods of fingerprint imaging recognition technology include optical imaging, capacitive imaging, and ultrasound imaging. Relatively speaking, the optical fingerprint imaging recognition technology has a relatively good imaging effect, and the equipment cost is relatively low.

However, the performance of existing optical fingerprint sensor modules needs to be improved.

Summary of the Invention

The problem to be solved by the present invention is to provide an optical fingerprint sensor module, a forming method and a working method thereof, so as to improve the performance of the optical fingerprint sensor module.

To solve the above problems, the present invention provides an optical fingerprint sensor module including: an optical fingerprint sensor, the optical fingerprint sensor includes an array of photosensitive pixel units and N rows of first driving lines, and the array of photosensitive pixel units includes N rows of photosensitive Pixel unit, the first driving line in the i-th row is connected to each photosensitive pixel unit in the i-th row, the first driving line is used to open the photosensitive pixel units one by one, N is an integer greater than or equal to 1, i is greater than or equal to 1 and An integer less than or equal to N; an OLED display panel located on the optical fingerprint sensor, the OLED display panel including a self-emitting display array and M rows of second driving lines, the self-emitting display array including M rows of self-emitting display units, The second driving line in the j-th row is respectively connected to the self-emitting display unit in the j-th row. M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M. The extending direction of the second driving line and The extending direction of the first driving line has an acute angle, and the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees.

Optionally, the first driving line of each row includes several first sub-driving lines; the second driving line of each row includes several second sub-driving lines; the extension direction of any one of the first sub-driving lines and any The acute angle between the extending directions of a second sub-drive line is greater than or equal to 0 degrees and less than or equal to 10 degrees.

Optionally, the extension directions of the plurality of first sub-drive lines are parallel to each other, and the extension directions of the plurality of second sub-drive lines are parallel to each other; the extension direction of the first drive lines is parallel to the extension direction of the second drive lines.

Optionally, the optical fingerprint sensor further includes Q columns of first data lines, where Q is an integer greater than or equal to 1; the photosensitive pixel unit array includes N rows * Q columns of photosensitive pixel units, and the first data lines are used for The output signal of the photosensitive pixel unit in the i-th row is read out under the driving of the first driving line in the i-th row; the OLED display panel further includes a second data line in the K column, where K is an integer greater than or equal to 1; The light-emitting display array includes M rows * K columns of self-emission display units, and the second data line is used to write data to the j-th row of self-emission display units under the driving of the j-th row and the second driving line.

The present invention also provides a method for operating the optical fingerprint sensor module, which includes: driving a self-luminous display unit line by line by a second driving line to realize input data update and display refresh after input data update in the self-luminous display unit. During the data update of the j-line self-emission display unit, the j-th row of the self-emission display unit is displayed as black; in the process of the second drive line driving the self-emission display unit line by line, the first drive line turns on the photosensitive pixel unit line by line, The photosensitive pixel unit collects fingerprint light information reflected from the light-emitting display unit and converts it into an electrical signal.

Optionally, the time duration for updating the data of the self-emission display unit in the j-th row is 2 microseconds to 40 microseconds.

Optionally, the time for the first drive line pair optical fingerprint sensor to complete a frame scan is the first time, the time for the second drive line pair OLED display panel to complete a frame scan is the second time, and the first time is the second time 2 times to 20 times.

Optionally, the scan time of each frame of the first driving line pair is 20 milliseconds to 200 milliseconds; and the scan time of the second driving line pair of each frame image is 10 milliseconds to 50 milliseconds.

The present invention also provides a method for forming any one of the above optical fingerprint sensor modules, including: providing an optical fingerprint sensor, the optical fingerprint sensor including an array of photosensitive pixel units and N rows of first driving lines, the array of photosensitive pixel units It includes N rows of photosensitive pixel units. The first driving line in the i-th row is connected to each photosensitive pixel unit in the i-th row. The first driving line is used to open the photosensitive pixel units one by one. N is an integer greater than or equal to 1, and i is An integer greater than or equal to 1 and less than or equal to N; a self-luminous display panel is provided, the OLED display panel includes a self-luminous display array and M rows of second driving lines, the self-luminous display array includes M rows of self-luminous display units, The second driving lines in the row are respectively connected to the self-emitting display unit in the j-th row, where M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M; and the self-emitting display panel is disposed on the optical On the fingerprint sensor, the extending direction of the second driving line and the extending direction of the first driving line have an acute angle, and the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees. .

Compared with the prior art, the technical solution of the present invention has the following advantages:

In the optical fingerprint sensor module provided by the technical solution of the present invention, since the extending direction of the second driving line and the extending direction of the first driving line have an acute angle, the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees. The extension direction of the second driving line and the extension direction of the first driving line are approximately parallel, so the change in the light emission of the OLED display panel is close to the scanning direction of the optical fingerprint sensor. The optical signal integrated intensity of different photosensitive pixel units in the same row in the optical fingerprint sensor Basically the same, thereby avoiding the obvious oblique stripes in the optical fingerprint sensor. Therefore, the adverse effect of black lines on the fingerprint image in the optical fingerprint sensor is reduced, the quality of the fingerprint image is improved, and the optical fingerprint sensor module is improved. performance.

Secondly, within the above-mentioned range of acute angles, it can meet the process accuracy requirements of the bonding between the optical fingerprint sensor and the OLED display panel.

Further, when the extending direction of the first driving line is parallel to the extending direction of the second driving line, black lines have the least adverse effect on the fingerprint image in the optical fingerprint sensor, and the quality of the fingerprint image is further improved.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic structural diagram of an optical fingerprint sensor module according to an embodiment of the present invention;

FIG. 2 is a circuit structure diagram of the fingerprint sensing circuit layer in FIG. 1; FIG.

3 is a circuit structural diagram of a self-emitting circuit layer in FIG. 1;

4 is a schematic diagram of the relative positions of the self-luminous circuit layer and the fingerprint sensing circuit layer in FIG. 1;

5 is a flowchart of forming an optical fingerprint sensor module according to another embodiment of the present invention;

FIG. 6 is a flowchart of a working method of an optical fingerprint sensor module according to another embodiment of the present invention.

detailed description

As described in the background, the performance of the optical fingerprint sensor module formed in the prior art is poor.

An optical fingerprint sensor module includes: an optical fingerprint sensor; and a self-luminous display panel located on the optical fingerprint sensor.

The optical fingerprint sensor includes a plurality of first driving lines and a plurality of rows of photosensitive pixel units. The first driving line in the i-th row is connected to each photosensitive pixel unit in the i-th row. The first driving line is used to open the photosensitive pixels row by row. unit. The OLED display panel includes a plurality of rows of second driving lines and a self-luminous display array. The self-luminous display array includes a plurality of rows of self-luminous display units. connection.

The second driving line is used to drive the self-luminous display unit row by row, to realize input data update and display refresh after the input data is updated in the self-luminous display unit. The light emitting display unit is displayed in black. That is, for each row of light-emitting display units, the light-emitting display unit inevitably appears a short period of black lines during the process of updating the screen.

However, when the included angle between the extending direction of the first driving line and the extending direction of the second driving line is large, if it is 88 degrees to 90 degrees, the above-mentioned black lines will produce a larger fingerprint image in the optical fingerprint sensor. The specific effect is that the scanning direction of the optical fingerprint sensor is approximately perpendicular to the rolling direction of the black line in the OLED display panel, which results in different intensity of the optical signal integration of different photosensitive pixel units in the same line in the optical fingerprint sensor, which results in optical fingerprints. Obvious oblique stripes will appear in the sensor. The oblique direction refers to the direction inclined with respect to the extension direction of the first driving line of the optical fingerprint sensor), which results in a lower quality of the fingerprint image. Performance is low.

The research found that the relative positional relationship between the extension direction of the first drive line and the extension direction of the second drive line has a greater relationship with the degree of influence of black lines on the fingerprint image in the optical fingerprint sensor. The extending direction of the second driving line and the extending direction of the second driving line can reduce the negative influence of the black lines on the fingerprint image in the optical fingerprint sensor.

Based on this, the present invention provides an optical fingerprint sensor module including: an optical fingerprint sensor. The optical fingerprint sensor includes an array of photosensitive pixel units and N rows of first driving lines. The array of photosensitive pixel units includes N rows of photosensitive pixel units. The first driving line in the i-line is connected to each photosensitive pixel unit in the i-th row. The first driving line is used to open the photosensitive pixel units one by one. N is an integer greater than or equal to 1. The OLED display panel on the optical fingerprint sensor. The OLED display panel includes a self-emitting display array and M rows of second driving lines. The self-emitting display array includes M rows of self-emitting display units, and the second driving line of the j-th row is connected to the self-emitting display unit of the j-th row, respectively. The extending direction of the second driving line and the extending direction of the first driving line have an acute angle that is greater than or equal to 0 degrees and less than or equal to 10 degrees. The performance of the optical fingerprint sensor module is improved.

In order to make the foregoing objects, features, and advantages of the present invention more comprehensible, the following describes specific embodiments of the present invention in detail with reference to the accompanying drawings.

The vertical relationship in this manual is defined by placing the optical fingerprint sensor module under the user's eyes. When the optical fingerprint sensor module is placed below the user's eyes, if one structure is located above the other structure, it means that this structure is closer to the user's eyes than the other structure, and it is also explained here.

An embodiment of the present invention provides an optical fingerprint sensor module. Please refer to FIG. 1 to FIG. 4 in combination, including:

The optical fingerprint sensor 10 includes an array of photosensitive pixel units and N rows of first driving lines 110. The array of photosensitive pixel units includes N rows of photosensitive pixel units 120. The first driving lines 110 of the i-th row are respectively The photosensitive pixel units 120 in the i-th row are connected, and the first driving line 110 is used to turn on the photosensitive pixel units 120 one by one, where N is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to N;

An OLED display panel 20 on the optical fingerprint sensor, the OLED display panel 20 includes a self-emitting display array and M rows of second driving lines 210, and the self-emitting display array includes M rows of self-emitting display units 221, jth The second driving lines 210 of the row are respectively connected to the self-emitting display unit 221 of the j-th row, where M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M. The extending direction of the second driving line 210 The extending direction of the first driving line 110 has an acute angle, and the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees.

The optical fingerprint sensor 10 includes a sensor transparent substrate 11 and a fingerprint sensing circuit layer 12 on a surface of the sensor transparent substrate 11. The material of the sensor transparent substrate 11 may be a glass or plastic substrate, and the plastic substrate includes a PI substrate or a PET substrate.

The optical fingerprint sensor 10 includes a photosensitive pixel unit array, N rows of first driving lines 110, and Q columns of first data lines 130, where N is an integer greater than or equal to 1, and Q is an integer greater than or equal to 1. Specifically, the fingerprint sensing circuit layer 12 includes a photosensitive pixel unit array, N rows of first driving lines 110, and Q columns of first data lines. The photosensitive pixel unit array includes N rows * Q columns of photosensitive pixel units 120.

The photosensitive pixel unit 120 includes a photosensitive device 121 and a switching device 122. The switching device 122 includes a plurality of transistors. The photosensitive device 121 includes a photodiode.

The first driving line in the i-th row is connected to each photosensitive pixel unit in the i-th row, and i is an integer greater than or equal to 1 and less than or equal to N. Specifically, the first driving lines in the i-th row are connected to the switching devices 122 in the i-th row, respectively. The first driving lines 110 of the rows are used to turn on the photosensitive pixel units 120 row by row.

The first data line is used to read the output signal of the photosensitive pixel unit 120 in the i-th row under the driving of the first driving line 110 in the i-th row.

In one embodiment, the first driving line 110 of each row of the photosensitive pixel units 120 of the optical fingerprint sensor 10 has only one driving line, and the opening of the row of the photosensitive pixel units 120 can be realized so that the signal of this row is detected by the first A data line is read.

In another embodiment, the first driving lines 110 of each row of the photosensitive pixel units 120 of the optical fingerprint sensor 10 include a plurality of first sub-driving lines in order to achieve better signal readout.

The OLED display panel 20 includes a first transparent substrate 21, a second transparent substrate 23, and a self-luminous circuit layer 22. The self-luminous circuit layer 22 is located between the first transparent substrate 21 and the second transparent substrate 23. The materials of the first light-transmitting substrate 21 and the second light-transmitting substrate 23 may be light-transmitting materials. The specific material is inorganic glass or organic glass, or other plastic products other than organic glass, such as plastic substrates. The plastic substrates include PI substrates. Or PET substrate.

The OLED display panel 20 includes a self-luminous display array, M rows of second driving lines 210, and K columns of second data lines 230, where M is an integer greater than or equal to 1, and K is an integer greater than or equal to 1. Specifically, the self-luminous circuit layer 22 includes a self-luminous display array, M rows of second driving lines 210, and K columns of second data lines 230. The self-luminous display array includes M rows * K columns of self-luminous display units 221.

In FIG. 1, the area where the plurality of self-luminous display units 221 are located and the adjacent relationship between the respective self-luminous display units 221 are indicated by dashed frames. It should be noted that although the dotted frame includes a part of the first light-transmitting substrate 21 and the second light-transmitting substrate 23, this is only for convenience of illustration, and the self-luminous display unit 221 does not include the first light-transmitting substrate 21 and the second Light-transmitting substrate 23.

The second driving line 210 in the j-th row is connected to the self-emission display unit 220 in the j-th row, and j is an integer greater than or equal to 1 and less than or equal to M.

The second data line 230 is used to write data to the self-emission display unit 221 of the j-th row under the driving of the j-th row of the second driving line 210.

The second driving lines 210 of each row of the self-emitting display units 221 of the OLED display panel 20 include a plurality of second sub-driving lines. These second sub-driving lines input driving signals at a certain timing. The K-column second data lines 230 cooperate with each other, thereby realizing data writing and display refresh of the self-emitting display unit 221 of each row.

The extending direction of the second driving line 210 and the extending direction of the first driving line 110 have an acute angle (refer to FIG. 4), and the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees. Specifically, an acute angle between an extension direction of any one of the first sub-drive lines and an extension direction of any one of the second sub-drive lines is greater than or equal to 0 degrees and less than or equal to 10 degrees.

FIG. 4 is a fingerprint sensing circuit layer 12 schematically illustrated by a dotted line, and a self-luminous circuit layer 22 is illustrated partially implemented in FIG. 4.

In one embodiment, the extension directions of the plurality of first sub-drive lines are parallel to each other, and the extension directions of the plurality of second sub-drive lines are parallel to each other, and the extension direction of the first drive lines is parallel to the extension direction of the second drive lines. .

In this embodiment, the optical fingerprint sensor module further includes a light collimator 30, which is located between the optical fingerprint sensor 10 and the OLED display panel 20.

The light collimator 30 allows only a certain angle of light to pass through the OLED display panel 20, thereby eliminating stray light.

In this embodiment, the optical fingerprint sensor module further includes: a cover glass (not shown), which is located above the OLED display panel 20, and the cover glass plays a role of protecting the OLED display panel 20. effect.

The optical fingerprint sensor module can display images through the OLED display panel 20 on the one hand, and can allow the reflected light of the fingerprint passing through the OLED display panel 20 to be received by the optical fingerprint sensor 10, thereby achieving fingerprint identification. Therefore, the optical fingerprint sensor module has both an image display function and a fingerprint recognition function.

Specifically, in the process of implementing the fingerprint recognition function, some light emitted from the OLED display panel 20 is first used for fingerprint recognition. After reaching the upper surface (or cover glass surface) of the OLED display panel 20, the light is applied to the upper surface of the OLED display panel 20. The surface (or cover glass surface), that is, optical phenomena such as refraction and reflection occur at the interface with the fingerprint of the finger, resulting in corresponding reflected light; the reflected light returns obliquely downward to the OLED display panel 20, and further (inclined) It passes through the OLED display panel 20, passes through the light collimator 30, and then reaches the optical fingerprint sensor 10, and is received by the photosensitive device 121 in the optical fingerprint sensor 10. The fingerprint recognition is then achieved by using the optical fingerprint sensor 10.

Since the extending direction of the second driving line 210 and the extending direction of the first driving line 110 have an acute angle, the acute angle included angle is greater than or equal to 0 degrees and less than or equal to 10 degrees. The extending direction of the line 110 is approximately parallel, so the change in the light emission of the OLED display panel is close to the scanning direction of the optical fingerprint sensor. The optical signal integrated intensity of different photosensitive pixel units in the same row in the optical fingerprint sensor is basically the same, thereby avoiding the optical fingerprint sensor. Obvious oblique stripes appear in the image, which further reduces the adverse effect of black lines on the fingerprint image in the optical fingerprint sensor, and improves the quality of the fingerprint image.

Secondly, within the above-mentioned range of acute angles, the process precision requirements of the bonding between the optical fingerprint sensor 10 and the OLED display panel 20 can be met, and the process is easy to achieve while meeting the requirements of the precision range.

Accordingly, another embodiment of the present invention also provides a method for forming the above-mentioned optical fingerprint sensor module. Please refer to FIG. 5, including:

S01: An optical fingerprint sensor 10 is provided. The optical fingerprint sensor 10 includes an array of photosensitive pixel units and N rows of first driving lines 110. The array of photosensitive pixel units includes N rows of photosensitive pixel units 120 and a first driving line of the i-th row. 110 is connected to each photosensitive pixel unit 120 in the i-th row, and the first driving line 110 is used to turn on the photosensitive pixel units 120 one by one, N is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to N;

S02: An OLED display panel 20 is provided. The OLED display panel 20 includes a self-luminous display array and M rows of second driving lines 210. The self-luminous display array includes M rows of self-luminous display units 221 and a second driver of a j-th row. Line 210 is respectively connected to the self-luminous display unit 221 of the j-th row, where M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M;

S03: The self-luminous display panel 20 is disposed on the optical fingerprint sensor 10. The extending direction of the second driving line 210 and the extending direction of the first driving line 110 have an acute angle. The acute angle is greater than 0 degrees and 10 degrees or less.

In this embodiment, the specific structure of the optical fingerprint sensor 10 is referred to the foregoing, and the specific structure of the OLED display panel 20 is referred to the foregoing, and will not be described in detail.

In this embodiment, it further includes: providing a light collimator 30; and before setting the self-luminous display panel 20 on the optical fingerprint sensor 10, setting the light collimator 30 on the optical fingerprint sensor 10, the light collimator 30 and the optical fingerprint sensor 10 are bonded together; the self-luminous display panel 20 is disposed on the light collimator 30, the self-luminous display panel 20 and the light collimator 30 glued together.

Accordingly, another embodiment of the present invention also provides a working method of an optical fingerprint sensor module. Please refer to FIG. 6, including:

S001: The second driving line 210 drives the self-luminous display unit 221 row by row to realize input data update and display refresh after the input data update in the self-luminous display unit 221. During the data update process of the j-th row self-luminous display unit 221, The self-emission display unit in the j-th line is displayed in black;

S002: In the process of the second driving line 210 driving the self-luminous display unit 221 row by row, the first driving line 110 turns on the photosensitive pixel unit 120 row by row. The photosensitive pixel unit 120 collects fingerprint light information reflected from the luminous display unit 221 and converts it. Is an electrical signal.

It should be noted that the self-luminous display unit 221 includes an OLED element to emit light, a storage capacitor, and several transistors. During the data update process of the j-th row self-emission display unit 221, the j-th row self-emission display unit is displayed as black, the OLED elements in the other rows are self-emission display units 221 emit light, and the other rows of the self-emission display unit 221 are not updated .

The process of updating the data of the self-luminous display unit 221 in the j-th row changes the electrical signal stored in the storage capacitor in the self-luminous display unit 221. The display refresh process of the self-emission display unit 221 in the j-th row, that is, under the condition that the electrical signal stored in the storage capacitor changes, the OLED element in the j-th row display 221 emits light and the electrical signal stored in the storage capacitor Related brightness.

The j-line self-luminous display unit 221 updates the data for a duration of 2 microseconds to 40 microseconds; the first drive line 110 pair of optical fingerprint sensors completes a frame scan in the first time, and the second drive line 210 pair OLED The time for the display panel to complete one frame scan is the second time, and the first time is more than twice the second time. In this way, combining the extending direction of the second driving line 210 and the extending direction of the first driving line 110 has an acute angle included angle, the acute angle included angle being greater than or equal to 0 degrees and less than or equal to 10 degrees, and the first time and the second time The relationship between them effectively reduces the adverse effects of black lines on the fingerprint image in the optical fingerprint sensor, and improves the quality of the fingerprint image.

In one embodiment, the first time is 2 to 20 times the second time.

Specifically, the scanning time of the first driving line 110 for each frame image is 20 milliseconds to 200 milliseconds; the scanning time of the second driving line 210 for each frame image is 10 milliseconds to 50 milliseconds.

Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

An optical fingerprint sensor module, comprising:

An optical fingerprint sensor including an array of photosensitive pixel units and N rows of first driving lines, the array of photosensitive pixel units including N rows of photosensitive pixel units, and the first driving line in the i-th row and each of the i-th row are respectively The photosensitive pixel units are connected. The first driving line is used to turn on the photosensitive pixel units one by one, N is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to N;

An OLED display panel located on the optical fingerprint sensor, the OLED display panel includes a self-luminous display array and M rows of second driving lines, the self-luminous display array includes M rows of self-luminous display units, and the second row of the j-th row The driving lines are respectively connected to the self-luminous display units in the j-th row, where M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M. The extending direction of the second driving line and the extending of the first driving line. The direction has an acute angle included angle that is greater than or equal to 0 degrees and less than or equal to 10 degrees.
The optical fingerprint sensor module according to claim 1, wherein the first driving line of each row includes a plurality of first sub-driving lines; the second driving line of each row includes a plurality of second sub-driving lines ; The acute angle between the extension direction of any one of the first sub-drive lines and the extension direction of any second sub-drive line is greater than or equal to 0 degrees and less than or equal to 10 degrees.
The optical fingerprint sensor module according to claim 2, wherein the extending directions of the plurality of first sub-driving lines are parallel to each other, and the extending directions of the plurality of second sub-driving lines are parallel to each other; The extending direction is parallel to the extending direction of the second driving line.
The optical fingerprint sensor module according to claim 1, wherein the optical fingerprint sensor further comprises Q columns of first data lines, where Q is an integer greater than or equal to 1, and the photosensitive pixel unit array includes N rows * Q A column of photosensitive pixel units, the first data line is used to read out an output signal of the photosensitive pixel unit of the i-th row under the driving of the first driving line of the i-th row;

The OLED display panel further includes K columns of second data lines, where K is an integer greater than or equal to 1. The self-luminous display array includes M rows * K columns of self-luminous display units, and the second data lines are used at the j-th row. Data is written to the self-emission display unit in the j-th row under the driving of the second driving line in the row.
The method for operating an optical fingerprint sensor module according to any one of claims 1 to 4, further comprising:

The second driving line drives the self-luminous display unit row by row to realize input data update and display refresh after the input data is updated in the self-luminous display unit. In the process of updating the data in the j-th row of the self-luminous display unit, the j-th row is self-luminous Units are displayed in black;

In the process of driving the self-emitting display unit line by line by the second driving line, the first driving line turns on the photosensitive pixel unit line by line, and the photosensitive pixel unit collects the fingerprint light information reflected from the light emitting display unit and converts it into an electrical signal.
The working method of the optical fingerprint sensor module according to claim 5, wherein the j-th row of self-luminous display unit data is updated once for a duration of 2 microseconds to 40 microseconds.
The working method of the optical fingerprint sensor module according to claim 6, wherein the time for the first driving line pair optical fingerprint sensor to complete one frame scanning is the first time, and the second driving line pair completes one frame for the OLED display panel. The scanning time is the second time, and the first time is 2 to 20 times of the second time.
The working method of the optical fingerprint sensor module according to claim 7, wherein the scanning time of each frame of the first driving line pair is 20 milliseconds to 200 milliseconds; and the second driving line pair of each frame image The scan time is from 10 ms to 50 ms.
A method for forming an optical fingerprint sensor module according to any one of claims 1 to 4, comprising:

An optical fingerprint sensor is provided. The optical fingerprint sensor includes an array of photosensitive pixel units and N rows of first driving lines. The array of photosensitive pixel units includes N rows of photosensitive pixel units. The photosensitive pixel units are connected, and the first driving line is used to open the photosensitive pixel units one by one, N is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to N;

A self-emitting display panel is provided. The OLED display panel includes a self-emitting display array and M rows of second driving lines. The self-emitting display array includes M rows of self-emitting display units. The self-luminous display units of the row are connected, M is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to M;

The self-luminous display panel is disposed on the optical fingerprint sensor, and the extending direction of the second driving line and the extending direction of the first driving line have an acute angle, and the acute angle is greater than or equal to 0 degrees and less than or equal to 10 degrees.