CN110858282B

CN110858282B - Fingerprint identification method and electronic equipment

Info

Publication number: CN110858282B
Application number: CN201810962726.1A
Authority: CN
Inventors: 胡轶; 王曙光; 吴瑾; 王远靖
Original assignee: Vkansee Beijing Technology Co ltd; Huawei Technologies Co Ltd
Current assignee: Vkansee Beijing Technology Co ltd; Huawei Technologies Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2023-09-26
Anticipated expiration: 2038-08-22
Also published as: CN110858282A

Abstract

The embodiment of the application provides a fingerprint identification method and electronic equipment, wherein the method comprises the following steps: when a user performs finger touch operation on a display screen of the electronic device, a control Integrated Circuit (IC) of the electronic device determines a finger touch area according to the finger touch operation; when the pixels in the preset range around the small hole on the light-emitting plate right below the finger touch area are closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen, and sends the fingerprint signals and the reflection signals of other pixels in the screen to the control IC of the electronic equipment; the control IC converts fingerprint signals and reflected signals of other pixels in the screen into electrical signals, and when a fingerprint identification instruction is received, the electrical signals are converted into fingerprint signals so as to carry out fingerprint identification according to the fingerprint signals; therefore, the interference of the reflected signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint images.

Description

Fingerprint identification method and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to a fingerprint identification method and an electronic device.

Background

With the continuous development of technology, fingerprint identification technology has become an important function of electronic devices for facilitating unlocking and secure payment, and has become a vital part of people's life.

In the prior art, taking a screen of an electronic device as an OLED screen as an example, when a user presses a glass cover plate of the OLED screen with a finger, light emitted by a pixel on a light emitting plate disposed below the glass cover plate irradiates the finger, and reflected fingerprint signals and reflected signals in the screen sequentially pass through the glass cover plate, the light emitting plate and small holes disposed on a light blocking film to reach a fingerprint sensor, as shown in fig. 1, for example, fig. 1 is a schematic diagram of a reflected signal provided in the prior art, the fingerprint sensor converts the reflected signals into electrical signals after receiving the reflected signals, and sends the converted electrical signals to a control integrated circuit (Integrated circuit, abbreviated as IC) of the electronic device, so that the control IC can determine whether the finger touches and performs fingerprint recognition according to the electrical signals, thereby realizing fingerprint recognition.

However, when the user presses the glass cover plate of the OLED screen, since the reflected signals in the screen also reach the fingerprint sensor through the small holes formed in the light blocking film, the reflected signals do not include fingerprint information, and the reflected signals (i.e., noise signals) that do not include fingerprint information may interfere with the effective reflected signals (fingerprint signals including fingerprint information), so that the signal-to-noise ratio of the fingerprint image is reduced, thereby affecting the fingerprint identification.

Disclosure of Invention

The application provides a fingerprint identification method and electronic equipment, which can reduce the interference of a reflected signal in a screen on an effective fingerprint signal on the basis of ensuring the signal-to-noise ratio of a fingerprint image when fingerprint identification is carried out.

In a first aspect, an embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method may include:

when a user performs finger touch operation on a display screen of the electronic device, a control Integrated Circuit (IC) of the electronic device determines a finger touch area according to the finger touch operation;

when the pixels in the preset range of the periphery of the small hole on the light-emitting plate right below the finger touch area are closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen;

the fingerprint sensor sends fingerprint signals and reflected signals of other pixels in the screen to a control IC of the electronic device;

the control IC converts the fingerprint signals and the reflected signals of other pixels in the screen into electric signals, and when receiving the fingerprint identification instruction, the control IC converts the electric signals into fingerprint signals and performs fingerprint identification according to the fingerprint signals.

Therefore, in the fingerprint identification method provided by the embodiment of the application, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels in a preset range are turned off, so that the reflection signals generated by the pixels in the preset range in the screen can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

In one possible implementation, the preset range is a range with the small hole as a center and R as a radius; wherein R is greater than or equal to the distance between two adjacent pixels.

In one possible implementation, R is less than or equal to 100 microns.

In one possible implementation, the preset range is a range in which m×n pixel matrices surrounding the aperture are arranged; wherein M, N are integers greater than or equal to 2.

In one possible implementation, M is equal to N, and M is equal to 2 or 3.

In one possible implementation, when a pixel within a preset range around a small hole on the light emitting panel just below the finger touch area is turned off, a fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels except the pixel within the preset range in a screen, including:

the control IC controls all pixels on the light-emitting plate to be turned on;

when all pixels are in an on state, the control IC determines the pixels in a preset range;

the control IC controls the pixel in a preset range to be closed;

when the pixels in the preset range are closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in the screen.

the control IC determines pixels within a preset range;

the control IC controls the starting of other pixels except the pixels in a preset range in all pixels on the light-emitting plate;

In a second aspect, an embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method may include:

when a user performs finger touch operation on a display screen of the electronic equipment and when a pixel meeting a preset condition is closed, a fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixel meeting the preset condition in the screen; the preset condition is fingerprint signals in reflected signals from pixels, and the duty ratio of all signals generated by the fingerprint sensor is smaller than a preset threshold value;

The fingerprint sensor sends fingerprint signals and reflected signals of other pixels in the screen to a control Integrated Circuit (IC) of the electronic device;

Therefore, in the fingerprint identification method provided by the embodiment of the application, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels meeting the preset conditions are turned off, so that the pixels meeting the preset conditions can be prevented from generating the reflection signals in the screen, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

In one possible implementation, when a pixel that satisfies a preset condition is turned off, a fingerprint sensor of the electronic device collects a fingerprint signal and a reflection signal of other pixels in a screen except the pixel that satisfies the preset condition, including:

the control IC controls all pixels on a light-emitting plate of the electronic device to be turned on;

When all pixels are in an on state, the control IC determines the pixels meeting preset conditions;

the control IC controls the pixel which meets the preset condition to be closed;

when the pixels meeting the preset conditions are turned off, the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in the screen.

the control IC determines pixels meeting preset conditions;

the control IC controls the starting of other pixels except for the pixels meeting the preset conditions in all pixels on the luminous plate of the electronic equipment;

In a third aspect, an embodiment of the present application further provides a fingerprint identification method, where the fingerprint identification method may include:

determining pixels to be turned off according to the signal-to-noise ratio of the expected fingerprint image;

When a user performs finger touch operation on a display screen of the electronic equipment, and when a pixel to be closed is closed, a fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in the screen;

Therefore, in the fingerprint identification method provided by the embodiment of the application, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels to be closed, which are determined according to the signal-to-noise ratio of the expected fingerprint image, are closed first, so that the pixels to be closed can be prevented from generating the reflection signals in the screen, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

In one possible implementation, when the pixel to be turned off is turned off, the fingerprint sensor of the electronic device collects a fingerprint signal and a reflection signal of other pixels except the pixel to be turned off in the screen, and may include:

when all pixels are in an on state, the control IC determines the pixels to be turned off;

the control IC controls the pixels to be turned off;

when the pixel to be closed is closed, a fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in a screen.

the control IC determines the pixels to be turned off;

the control IC controls the other pixels except the pixel to be turned off to be turned on in all the pixels on the luminous plate of the electronic equipment;

In a fourth aspect, an embodiment of the present application further provides an electronic device, where the electronic device may include

The fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC;

the control IC is used for determining a finger touch area according to the finger touch operation when the user performs the finger touch operation on the display screen;

the fingerprint sensor is used for collecting fingerprint signals and reflection signals of other pixels except for the pixels in a preset range in a screen when the pixels in the preset range around the small hole on the light-emitting plate right below the finger touch area are closed;

the fingerprint sensor is also used for sending fingerprint signals and reflection signals of other pixels in the screen to a control IC of the electronic equipment;

the control IC is also used for converting fingerprint signals and reflected signals of other pixels in the screen into electric signals, converting the electric signals into fingerprint signals when receiving a fingerprint identification instruction, and carrying out fingerprint identification according to the fingerprint signals.

In one possible implementation, R is less than or equal to 100 microns.

In one possible implementation, M is equal to N, and M is equal to 2 or 3.

In one possible implementation, the control IC is specifically configured to control all pixels on the light emitting panel to be turned on; when all pixels are in an on state, determining the pixels in a preset range; then controlling the pixels within a preset range to be closed;

the fingerprint sensor is specifically used for collecting fingerprint signals and reflection signals of other pixels except for the pixels in the preset range in a screen when the pixels in the preset range are closed.

In one possible implementation, the control IC is specifically configured to determine pixels within a preset range; and controlling other pixels except for the pixels in the preset range to be turned on in all the pixels on the light-emitting plate;

In a fifth aspect, an embodiment of the present application further provides an electronic device, where the electronic device may include a display screen, a fingerprint sensor, and a control integrated circuit IC, where the fingerprint sensor is disposed at a bottom of the display screen, and the fingerprint sensor is connected to the control IC;

the fingerprint sensor is used for collecting fingerprint signals and reflection signals of other pixels in the screen except for the pixels meeting the preset conditions when the user performs finger touch operation on the display screen and the pixels meeting the preset conditions are closed; the preset condition is fingerprint signals in reflected signals from pixels, and the duty ratio of all signals generated by the fingerprint sensor is smaller than a preset threshold value;

and the control IC is used for converting the fingerprint signals and the reflected signals of other pixels in the screen into electric signals, converting the electric signals into fingerprint signals when receiving the fingerprint identification instruction, and carrying out fingerprint identification according to the fingerprint signals.

In one possible implementation, the control IC is specifically configured to control all pixels on the light emitting panel of the electronic device to be turned on; when all pixels are in an on state, determining the pixels meeting preset conditions; then controlling the pixels meeting the preset conditions to be closed;

The fingerprint sensor is specifically used for collecting fingerprint signals and reflection signals of other pixels except for pixels in a preset range in a screen when the pixels meeting preset conditions are closed.

In one possible implementation, the control IC is specifically configured to determine pixels that meet a preset condition; and controlling the other pixels except the pixels meeting the preset conditions to be turned on in all the pixels on the luminous plate of the electronic equipment;

In a sixth aspect, an embodiment of the present application further provides an electronic device, where the electronic device may include a display screen, a fingerprint sensor, and a control integrated circuit IC, where the fingerprint sensor is disposed at a bottom of the display screen, and the fingerprint sensor is connected to the control IC;

the control IC is used for determining the pixels to be closed according to the signal-to-noise ratio of the expected fingerprint image;

the fingerprint sensor is used for executing finger touch operation on a display screen of the electronic equipment by a user, and collecting fingerprint signals and reflection signals of other pixels except the pixels to be closed in the screen when the pixels to be closed are closed;

The fingerprint sensor is also used for sending fingerprint signals and reflection signals of other pixels in the screen to a control integrated circuit IC of the electronic equipment;

In one possible implementation, the control IC is specifically configured to control all pixels on the light emitting panel of the electronic device to be turned on; when all pixels are in an on state, the control IC determines the pixels to be turned off; the control IC controls the pixel to be turned off;

the fingerprint sensor is specifically used for collecting fingerprint signals and reflection signals of other pixels except the pixels to be turned off in a screen when the pixels to be turned off are turned off.

In one possible implementation, the control IC is specifically configured to determine the pixels to be turned off; and controlling other pixels except the pixel to be turned off to be turned on in all pixels on the luminous plate of the electronic equipment;

In a seventh aspect, an embodiment of the present application further provides an electronic device, including a processor and a memory;

wherein the memory is used for storing program instructions;

the processor is configured to call and execute the program instruction stored in the memory, and execute the fingerprint identification method shown in any one of the above first aspects; or performing the fingerprint recognition method as set forth in any one of the second aspects above; or performing the fingerprint recognition method as set forth in any one of the above third aspects.

In an eighth aspect, an embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, performs the fingerprint identification method according to any one of the first aspects above; alternatively, when the computer program is executed by a processor, the fingerprint identification method according to any one of the second aspect is executed; alternatively, the fingerprint identification method as described in any one of the third aspects above is performed when the computer program is executed by a processor.

According to the fingerprint identification method and the electronic device provided by the embodiment of the application, when a user performs finger touch operation on the display screen of the electronic device, the control integrated circuit IC of the electronic device can determine the finger touch area according to the finger touch operation; when the pixels in the preset range of the periphery of the small hole on the light-emitting plate right below the finger touch area are closed, the fingerprint sensor collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in the screen; after collecting the fingerprint signals and the reflection signals of other pixels in the screen except the pixels in the preset range, the fingerprint signals and the reflection signals of other pixels in the screen are sent to a control IC of the electronic equipment, so that the control IC converts the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, and when receiving a fingerprint identification instruction, the electric signals are converted into fingerprint signals, and fingerprint identification is carried out according to the fingerprint signals. Compared with the prior art, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels in a preset range are turned off, so that the reflection signals generated by the pixels in the preset range in the screen can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint images.

Drawings

FIG. 1 is a schematic diagram of a reflected signal provided by the prior art;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a fingerprint identification method according to an embodiment of the present application'

Fig. 4 is a flowchart of another fingerprint identification method according to an embodiment of the present application;

fig. 5 is a flowchart of another fingerprint identification method according to an embodiment of the present application;

FIG. 6 is a schematic diagram of pixels within a predetermined range according to an embodiment of the present application;

FIG. 7 is a schematic diagram of pixels within another preset range according to an embodiment of the present application;

FIG. 8 is a schematic diagram of pixels within a predetermined range according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a pixel satisfying a preset condition according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another electronic device according to an embodiment of the present application.

Detailed Description

The fingerprint identification method provided by the embodiment of the application can be applied to electronic equipment with fingerprint identification function, and the electronic equipment can be a mobile phone, an Ipad and the like. Fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 2, the electronic device in fig. 2 may include a cover glass, a polarizer, a light-emitting board, a glass substrate, a fingerprint sensor, a control integrated circuit (integrated circuit, abbreviated as IC), and the like, and in the prior art, when a user performs a finger touch operation on a display screen of the electronic device, since reflection signals in the screen, which do not include fingerprint information, also reach the fingerprint sensor through small holes provided on a light-blocking film, the reflection signals in the screen interfere with effective fingerprint signals, so that the signal-to-noise ratio of a fingerprint image is reduced, thereby affecting fingerprint identification.

In order to reduce interference of a reflection signal (namely, a noise signal) in a screen on an effective fingerprint signal (namely, an effective reflection signal) on the basis of ensuring the signal-to-noise ratio of a fingerprint image, the embodiment of the application provides a fingerprint identification method, when a user performs finger touch operation on a display screen of electronic equipment, a control IC can control partial pixels on a light-emitting plate to be closed; upon determining that a portion of the pixels are off, the fingerprint sensor captures a fingerprint signal (i.e., an effective reflected signal) and reflected signals of other pixels within the screen except for the off portion of the pixels; and transmitting the fingerprint signal and the reflected signals of other pixels in the screen to a control IC of the electronic device; the control IC can convert fingerprint signals and reflected signals of other pixels in the screen into electric signals, and when receiving a fingerprint identification instruction, the control IC converts the electric signals into fingerprint signals and performs fingerprint identification according to the fingerprint signals. Compared with the prior art, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels are turned off first, so that the reflection signals generated by the turned-off part of pixels in the screen can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint images.

It should be noted that, in the embodiment of the present application, when determining the above-mentioned partial pixels, the partial pixels to be turned off may be determined in at least three possible manners, and in one possible implementation manner, the partial pixels to be turned off may be pixels within a preset range around the aperture on the light emitting panel directly below the finger touch area, for example, please refer to fig. 3 below, and fig. 3 is a flowchart of a fingerprint identification method provided in the embodiment of the present application; in another possible implementation manner, the portion of pixels to be turned off may be pixels satisfying a preset condition, where the preset condition is a fingerprint signal in a reflected signal from the pixels, and a ratio of the fingerprint signal to all signals generated by the fingerprint sensor is smaller than a preset threshold, for example, refer to fig. 4 below, and fig. 4 is a schematic flow chart of another fingerprint identification method provided in an embodiment of the present application; in another possible implementation manner, the partial pixels to be turned off may be partial pixels determined according to a signal-to-noise ratio of a desired fingerprint image, for example, please refer to fig. 5 below, and fig. 5 is a flow chart of another fingerprint identification method according to an embodiment of the present application. In the following, three different technical solutions provided by the present application and how the three different technical solutions provided by the present application solve the above technical problems will be described in detail through specific embodiments.

In one possible implementation manner, when the portion of the pixels to be turned off is a pixel within a preset range around the aperture on the light emitting panel directly under the finger touch area, as shown in fig. 3, the fingerprint identification method may include:

s301, when a user performs finger touch operation on a display screen of the electronic device, a control integrated circuit IC of the electronic device determines a finger touch area according to the finger touch operation.

It should be noted that, in the embodiment of the present application, the finger touch area refers to a contact area of the current finger on the display screen, and the area of the finger touch area may be approximately equal to the area of the finger of the user, that is, the finger touch area is not a touchable area in the display screen understood in a broad sense.

For example, when a user performs a finger touch operation on a display screen of an electronic device, the user may directly perform the finger touch operation on the display screen, or may perform the finger touch operation on the display screen through a protective film on the display screen, specifically, by which mode the finger touch operation is performed on the display screen of the electronic device.

When a user performs finger touch operation on a display screen of the electronic device, the fingerprint sensor can utilize refraction and reflection principles of light, the finger emits light rays which are reflected back into the screen through the surface of the finger under the irradiation of pixels in the display screen, the reflected light rays sequentially pass through the glass cover plate, the light emitting plate and small holes arranged on the light emitting plate to reach the fingerprint sensor, the fingerprint sensor can convert the reflected signals into electric signals and send the electric signals obtained through conversion to the control IC, and the control IC can calculate coordinate information of finger touch according to the electric signals, so that a finger touch area is determined.

After the finger touch area is determined according to the finger touch operation through S301, the following S302 may be performed:

s302, when pixels in a preset range around a small hole on the light-emitting plate right below the finger touch area are closed, fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen are collected by a fingerprint sensor of the electronic device.

In the embodiment of the application, in order to reduce the interference of the reflection signal in the screen on the effective fingerprint signal, the interference of the reflection signal in the screen on the effective fingerprint signal is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image, therefore, before the fingerprint sensor collects the signal, the pixels in the preset range around the small hole on the light emitting plate right below the finger touch area are required to be closed, so that when the pixels in the preset range around the small hole on the light emitting plate right below the finger touch area are closed, the fingerprint sensor collects the reflection signals of the fingerprint signal and other pixels except the pixels in the preset range in the screen, thereby avoiding the pixels in the preset range from generating the reflection signal in the screen, reducing the interference of the reflection signal in the screen on the effective fingerprint signal, and further reducing the interference of the reflection signal in the screen on the effective fingerprint signal on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

It should be noted that, in the embodiment of the present application, when the pixels within the preset range around the small hole on the light emitting panel just below the finger touch area are turned off in S302, the fingerprint sensor of the electronic device may collect the fingerprint signal and the reflection signals of the other pixels in the screen except for the pixels within the preset range may include two modes:

in the mode 1, the control IC may control all pixels on the light emitting panel to be turned on; when all pixels are in an on state, determining the pixels in a preset range; and after the pixels in the preset range are determined, the pixels in the preset range are controlled to be closed, so that the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen when the pixels in the preset range are closed.

Mode 2, the control IC may determine pixels within a preset range, and after determining the pixels within the preset range, control on other pixels except the pixels within the preset range among all the pixels on the light emitting panel; thus, the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except for the pixels in the preset range in the screen when the pixels in the preset range are closed.

Therefore, by the above mode 1 or mode 2, when the pixels within the preset range around the small hole on the light emitting panel just below the finger touch area are turned off, the fingerprint signal and the reflection signals of other pixels in the screen except the pixels within the preset range can be collected. Optionally, pixels within a preset range around the aperture on the light-emitting panel right under the finger touch area are determined, where the preset range may be a range using the aperture as a center and R as a radius; of course, the preset range may be a range in which m×n pixel matrices surrounding the aperture are arranged; the embodiments of the present application are described herein by taking the preset range as an example, but the embodiments of the present application are not limited thereto.

When the preset range is a range taking the small hole as the center and R as the radius, the pixels in the range taking the small hole as the center and R as the radius are all pixels in the preset range. Wherein, R is greater than or equal to the distance between two adjacent pixels, where, for how much R is, the R may be specifically set according to actual needs, and the embodiment of the present application is not limited further herein. Illustratively, in embodiments of the present application, R is less than or equal to 100 microns. For example, when R is equal to 50 μm, referring to fig. 6, fig. 6 is a schematic diagram of pixels within a preset range provided in an embodiment of the present application, and it can be seen in conjunction with fig. 6 that the pixels within the preset range may include pixel 1, pixel 2, pixel 3 and pixel 4, and of course, the embodiment of the present application is only illustrated by way of example in fig. 5, but not limited thereto.

When the preset range is a range in which m×n pixel matrices surrounding the aperture are arranged, the pixels in the range in which m×n pixel matrices surrounding the aperture are arranged are all pixels in the preset range. Wherein M, N is an integer greater than or equal to 2, M and N may be equal or unequal, where M and N may be specifically set according to actual needs, and embodiments of the present application are not limited further herein. Illustratively, in embodiments of the present application, M is equal to N, and M is equal to 2 or 3. For example, when M and N are equal to 3, referring to fig. 7, fig. 7 is a schematic diagram of pixels within another preset range provided in an embodiment of the present application, and as can be seen in conjunction with fig. 7, the pixels within the preset range may include pixel 1, pixel 2, pixel 3, pixel 4, pixel 5, pixel 6, pixel 7, pixel 8 and pixel 9; of course, when M and N are equal to 3, as shown in fig. 8, fig. 8 is a schematic diagram of pixels within a predetermined range according to another embodiment of the present application, and as can be seen in conjunction with fig. 8, the pixels within the predetermined range may include pixel 1, pixel 2, pixel 3, pixel 4, pixel 6, pixel 8, pixel 10, pixel 11 and pixel 12; the embodiment of the present application is described by way of example only in fig. 7 and 8, but the embodiment of the present application is not limited thereto.

In the embodiment of the application, in order to reduce the interference of the reflected signal in the screen on the effective fingerprint signal, before the fingerprint sensor collects the signal, the pixels in the preset range around the small hole on the Light Emitting board under the finger touch area need to be closed, but when the signal in the preset range is closed, the pixels are not closed limitlessly, because too many pixels are closed, the energy of the Organic Light-Emitting Diode (OLED) as the Light source in the display screen irradiating the finger is reduced, the effective signal of the detected fingerprint image is reduced, so that the fingerprint identification is affected.

In summary, after determining the pixels in the preset range around the small hole on the light emitting plate right below the finger touch area according to the signal-to-noise ratio of the fingerprint image, controlling the pixels in the preset range to be closed, collecting the fingerprint signals and the reflection signals of other pixels except the pixels in the preset range in the screen when the pixels in the preset range are closed, so as to perform fingerprint identification according to the collected fingerprint signals and the reflection signals of the other pixels except the pixels in the preset range in the screen, thereby avoiding the pixels in the preset range from generating the reflection signals in the screen, reducing the interference of the reflection signals in the screen on the effective fingerprint signals, and further reducing the interference of the reflection signals in the screen on the effective fingerprint signals on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

S303, the fingerprint sensor sends the fingerprint signal and the reflected signals of other pixels in the screen to the control IC of the electronic device.

After the fingerprint sensor collects the fingerprint signals and the reflection signals of other pixels in the screen except for the pixels in the preset range through the above S302, the collected fingerprint signals and the reflection signals of other pixels in the screen may be sent to the control IC, so that the control IC may perform fingerprint recognition according to the fingerprint signals and the reflection signals of other pixels in the screen, that is, the following S304 is executed:

s304, the control IC converts fingerprint signals and reflected signals of other pixels in the screen into electrical signals, and when receiving a fingerprint identification instruction, the control IC converts the electrical signals into fingerprint signals and performs fingerprint identification according to the fingerprint signals.

After receiving the fingerprint signals sent by the fingerprint sensors and the reflected signals of other pixels in the screen, the control IC can convert the received fingerprint signals sent by the fingerprint sensors and the reflected signals of other pixels in the screen into electric signals, and in the conversion process, as the ridge lines of the fingerprints are in contact with the surface of the cover plate glass and the valley lines are not in contact with the surface of the cover plate glass, the intensities of the electric signals correspondingly generated are different, so that the electric signals are converted into the fingerprint signals, and as the density of the fingerprint sensors is large enough, the control IC can synthesize the fingerprint signals collected by the fingerprint sensors into a fingerprint image, so that fingerprint identification is performed according to the fingerprint image.

Therefore, according to the fingerprint identification method provided by the embodiment of the application, when a user performs finger touch operation on the display screen of the electronic device, the control integrated circuit IC of the electronic device can determine the finger touch area according to the finger touch operation; when the pixels in the preset range of the periphery of the small hole on the light-emitting plate right below the finger touch area are closed, the fingerprint sensor collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in the screen; after collecting the fingerprint signals and the reflection signals of other pixels in the screen except the pixels in the preset range, the fingerprint signals and the reflection signals of other pixels in the screen are sent to a control IC of the electronic equipment, so that the control IC converts the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, and when receiving a fingerprint identification instruction, the electric signals are converted into fingerprint signals, and fingerprint identification is carried out according to the fingerprint signals. Compared with the prior art, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels in a preset range are turned off, so that the reflection signals generated by the pixels in the preset range in the screen can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint images.

The embodiment shown in fig. 3 described above describes in detail how to implement fingerprint recognition when the pixel to be turned off is a pixel within a preset range around the aperture on the light emitting panel directly below the finger touch area, and in another possible implementation manner, the fingerprint recognition method may further include, as shown in fig. 4, by way of example when the pixel to be turned off is a pixel satisfying the preset condition:

s401, when a user performs finger touch operation on a display screen of the electronic device, and when a pixel meeting a preset condition is closed, a fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels in the screen except the pixel meeting the preset condition.

The preset condition is that the fingerprint signal in the reflected signals from the pixels is smaller than a preset threshold value in all signals generated by the fingerprint sensor. For example, the preset threshold may be 20% or 30%, and may specifically be set according to actual needs, where the embodiment of the present application is not limited specifically for how much the preset threshold is. When the pixel to be turned off is determined by the preset condition, the pixel satisfying the preset condition is not necessarily a pixel disposed in the preset range around the aperture, or is not necessarily a pixel disposed in the preset range around the aperture, but may also be a pixel not disposed in the preset range around the aperture, as shown in fig. 9, for example, fig. 9 is a schematic diagram of a pixel satisfying the preset condition provided in the embodiment of the present application, and as can be seen in connection with fig. 9, the pixel satisfying the preset condition may include the pixel 1, the pixel 2, the pixel 3 and the pixel 4 in the preset range around the aperture, or may also include the pixel 13 and the pixel 14 not disposed in the preset range around the aperture, and of course, the embodiment of the present application is only illustrated by taking fig. 9 as an example, but not representing that the embodiment of the present application is limited thereto.

In the embodiment of the application, too, in order to reduce the interference of the reflection signal in the screen on the effective fingerprint signal, so as to reduce the interference of the reflection signal in the screen on the effective fingerprint signal on the basis of ensuring the signal-to-noise ratio of the fingerprint image, therefore, before the fingerprint sensor collects the signal, the pixels meeting the preset condition need to be closed, so that when the pixels meeting the preset condition are closed, the fingerprint sensor collects the reflection signals of the fingerprint signal and other pixels except the pixels meeting the preset condition in the screen, the pixels meeting the preset condition can be prevented from generating the reflection signal in the screen, the interference of the reflection signal in the screen on the effective fingerprint signal is reduced, and the interference of the reflection signal in the screen on the effective fingerprint signal is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

It should be noted that, in the embodiment of the present application, when the pixel that satisfies the preset condition is turned off in S401, the fingerprint sensor of the electronic device collects the fingerprint signal and the reflection signals of the other pixels in the screen except the pixel that satisfies the preset condition may include two modes:

in the mode 1, the control IC may control all pixels on the light emitting panel to be turned on; when all pixels are in an on state, determining the pixels meeting preset conditions; and after determining the pixels meeting the preset conditions, controlling the pixels meeting the preset conditions to be turned off, so that the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except the pixels meeting the preset conditions in the screen when the pixels meeting the preset conditions are turned off.

In the mode 2, the control IC may determine the pixels satisfying the preset condition first, and after determining the pixels satisfying the preset condition, control the pixels on the light emitting panel to be turned on except for the pixels satisfying the preset condition; thus, the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except for pixels in a preset range in a screen when the pixels meeting the preset conditions are closed.

It should be noted that, in the embodiment of the present application, in order to reduce interference of a reflected signal in a screen on an effective fingerprint signal, before a fingerprint sensor collects a signal, a pixel meeting a preset condition needs to be turned off, but when a pixel meeting the preset condition is turned off, the pixel is not turned off without limitation, because too many pixels are turned off, so that energy of an Organic Light-Emitting Diode (OLED) as a Light source in a display screen irradiated on a finger is reduced, and the effective signal of a detected fingerprint image is reduced, so that fingerprint identification is affected.

In summary, after determining the pixel satisfying the preset condition according to the signal-to-noise ratio of the fingerprint image, the pixel satisfying the preset condition is controlled to be closed, and when the pixel satisfying the preset condition is closed, fingerprint signals and reflection signals of other pixels in the screen except for the pixel satisfying the preset condition are collected, so that fingerprint identification is performed according to the collected fingerprint signals and the reflection signals of the other pixels in the screen except for the pixel satisfying the preset condition, thus the reflection signals generated in the screen by the pixel satisfying the preset condition can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

S402, the fingerprint sensor sends the fingerprint signal and the reflected signals of other pixels in the screen to the control integrated circuit IC of the electronic device.

After the fingerprint sensor collects the fingerprint signals and the reflection signals of other pixels in the screen except for the pixels satisfying the preset condition through S402, the collected fingerprint signals and the reflection signals of other pixels in the screen may be sent to the control IC, so that the control IC may perform fingerprint recognition according to the fingerprint signals and the reflection signals of other pixels in the screen, that is, perform S403 as follows:

S403, the control IC converts the fingerprint signals and the reflected signals of other pixels in the screen into electrical signals, and when receiving a fingerprint identification instruction, the control IC converts the electrical signals into fingerprint signals and performs fingerprint identification according to the fingerprint signals.

Therefore, according to the fingerprint identification method provided by the embodiment of the application, when a user performs finger touch operation on the display screen of the electronic device and the pixels meeting the preset conditions are closed, the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels in the screen except the pixels meeting the preset conditions; the preset condition is fingerprint signals in reflected signals from pixels, and the duty ratio of all signals generated by the fingerprint sensor is smaller than a preset threshold value; after collecting the fingerprint signals and the reflection signals of other pixels except the pixels meeting the preset conditions in the screen, the fingerprint signals and the reflection signals of other pixels in the screen are sent to a control IC of the electronic equipment, so that the control IC converts the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, and when receiving a fingerprint identification instruction, the electric signals are converted into fingerprint signals, and fingerprint identification is carried out according to the fingerprint signals. Compared with the prior art, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, a part of pixels meeting the preset condition are turned off, so that the reflection signals generated in the screen by the pixels meeting the preset condition can be avoided, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

The embodiment shown in fig. 4 above describes in detail how to implement fingerprint recognition when the pixel to be turned off is a pixel satisfying the preset condition, and in another possible implementation manner, the fingerprint recognition method may further include, as shown in fig. 5, by way of example when the pixel to be turned off is a pixel determined according to the signal-to-noise ratio of the desired fingerprint image:

s501, determining a pixel to be closed according to a signal-to-noise ratio of a fingerprint image which is expected to be obtained.

The signal-to-noise ratio of the expected fingerprint image can be understood as that after the pixels meeting the preset conditions are closed, when fingerprint identification is performed according to the collected fingerprint signals and the reflection signals of other pixels except the pixels to be closed in the screen, the interference of the reflection signals in the screen on the effective fingerprint signals can be reduced to the greatest extent, but the signal-to-noise ratio of the fingerprint image for fingerprint identification is not affected.

In the embodiment of the application, the pixel to be closed is determined through the signal-to-noise ratio of the expected fingerprint image, so that when fingerprint identification is performed by collecting fingerprint signals and reflection signals of other pixels except the pixel to be closed in a screen, the fingerprint identification can be realized without influencing the fingerprint identification under the condition of reducing the interference of the reflection signals in the screen on effective fingerprint signals.

S502, when a user performs finger touch operation on a display screen of the electronic device, and when a pixel to be closed is closed, a fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in the screen.

In the embodiment of the application, in order to reduce the interference of the reflection signal in the screen on the effective fingerprint signal, the interference of the reflection signal in the screen on the effective fingerprint signal is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image, therefore, before the fingerprint sensor collects the signal, the pixel determined according to the signal-to-noise ratio of the expected fingerprint image needs to be closed, so that when the pixel to be closed is closed, the fingerprint sensor collects the reflection signals of the fingerprint signal and other pixels except the pixel to be closed in the screen, the pixel to be closed can be prevented from generating the reflection signal in the screen, the interference of the reflection signal in the screen on the effective fingerprint signal is reduced, and the interference of the reflection signal in the screen on the effective fingerprint signal is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

It should be noted that, in the embodiment of the present application, when the user performs the finger touch operation on the display screen of the electronic device, and when the pixel to be turned off is turned off, the fingerprint sensor of the electronic device collects the fingerprint signal and the reflection signals of the other pixels except the pixel to be turned off in the screen may include two modes:

Mode 1, a control IC controls turning on all pixels on a light emitting panel of an electronic device; when all pixels are in an on state, the control IC determines the pixels to be turned off; and after determining the pixel to be turned off, controlling the pixel to be turned off, so that the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except the pixel to be turned off in the screen when the pixel to be turned off is turned off.

Mode 2, the control IC may first determine the pixel to be turned off; after determining the pixels to be turned off, controlling all pixels on the light emitting panel to be turned on except the pixels to be turned off; the fingerprint sensor can collect fingerprint signals and reflection signals of other pixels except the pixels to be turned off in the screen when the pixels to be turned off are turned off.

S503, the fingerprint sensor sends the fingerprint signal and the reflected signals of other pixels in the screen to the control integrated circuit IC of the electronic device.

After the fingerprint sensor collects the fingerprint signals and the reflection signals of other pixels in the screen except for the pixel to be turned off through S502, the collected fingerprint signals and the reflection signals of other pixels in the screen may be sent to the control IC, so that the control IC may perform fingerprint recognition according to the fingerprint signals and the reflection signals of other pixels in the screen, that is, the following S504 is executed:

S504, the control IC converts fingerprint signals and reflected signals of other pixels in the screen into electrical signals, and when receiving a fingerprint identification instruction, the control IC converts the electrical signals into fingerprint signals and performs fingerprint identification according to the fingerprint signals.

Therefore, according to the fingerprint identification method provided by the embodiment of the application, the pixel to be closed can be determined according to the signal-to-noise ratio of the expected fingerprint image, when a user performs finger touch operation on the display screen of the electronic device, and when the pixel to be closed is closed, the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in the screen, and after the fingerprint signals and the reflection signals of other pixels in the screen are collected, the reflection signals of the fingerprint signals and the reflection signals of other pixels in the screen are sent to the control IC of the electronic device, so that the control IC converts the fingerprint signals and the reflection signals of other pixels in the screen into electrical signals, and when a fingerprint identification instruction is received, the electrical signals are converted into the fingerprint signals, and fingerprint identification is performed according to the fingerprint signals. Compared with the prior art, in the process of identifying the fingerprint, instead of collecting the reflection signals from all pixels, part of pixels determined according to the signal-to-noise ratio of the expected fingerprint image are turned off, so that the pixels to be turned off can be prevented from generating reflection signals in the screen, the interference of the reflection signals in the screen on the effective fingerprint signals is reduced, and the interference of the reflection signals in the screen on the effective fingerprint signals is reduced on the basis of ensuring the signal-to-noise ratio of the fingerprint image.

Fig. 10 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application, for example, referring to fig. 10, the electronic device 100 may include

The fingerprint sensor 1002 and the control integrated circuit IC1003, wherein fingerprint sensor 1002 sets up in the bottom of display 1001, and fingerprint sensor 1002 is connected with control IC1003.

The control IC1003 is configured to determine a finger touch area according to a finger touch operation when the user performs the finger touch operation on the display screen 1001.

The fingerprint sensor 1002 is configured to collect a fingerprint signal and a reflection signal of other pixels in the screen except for pixels in a preset range when the pixels in the preset range around the aperture on the light emitting panel directly under the finger touch area are turned off;

the fingerprint sensor 1002 is also used to send fingerprint signals and reflected signals of other pixels in the screen to the control IC1003 of the electronic device 100.

The control IC1003 is further configured to convert the fingerprint signal and the reflected signals of other pixels in the screen into an electrical signal, and when receiving the fingerprint identification instruction, the control IC1003 converts the electrical signal into a fingerprint signal, and performs fingerprint identification according to the fingerprint signal.

Optionally, the preset range is a range with a small hole as a center and R as a radius; wherein R is greater than or equal to the distance between two adjacent pixels.

Optionally, R is less than or equal to 100 microns.

Optionally, the preset range is a range in which m×n pixel matrices surrounding the aperture are arranged; wherein M, N are integers greater than or equal to 2.

Alternatively, M is equal to N, and M is equal to 2 or 3.

Optionally, the control IC1003 is specifically configured to control on all pixels on the light emitting panel; when all pixels are in an on state, determining the pixels in a preset range; and then controlling the pixels within a preset range to be turned off.

The fingerprint sensor 1002 is specifically configured to collect a fingerprint signal and a reflection signal of other pixels in the screen except for the pixels in the preset range when the pixels in the preset range are turned off.

Optionally, the control IC1003 is specifically configured to determine pixels within a preset range; and controlling the other pixels except the pixels within the preset range to be turned on in all the pixels on the light emitting panel.

The electronic device 100 in the embodiment of the present application may execute the fingerprint identification method in the embodiment shown in fig. 3, and the implementation principle and the beneficial effects of the fingerprint identification method are similar to those of the fingerprint identification method shown in fig. 3, and are not described herein.

The embodiment of the application also provides electronic equipment which can also comprise a display screen, a fingerprint sensor and a control Integrated Circuit (IC), wherein the fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC. For example, see fig. 10 above.

The fingerprint sensor is used for collecting fingerprint signals and reflection signals of other pixels in the screen except for the pixels meeting the preset conditions when the user performs finger touch operation on the display screen and the pixels meeting the preset conditions are closed; the preset condition is that the fingerprint signal in the reflected signals from the pixels is smaller than a preset threshold value in all signals generated by the fingerprint sensor.

The fingerprint sensor is also used for sending fingerprint signals and reflected signals of other pixels in the screen to a control IC of the electronic device.

Optionally, the control IC is specifically configured to control on all pixels on the light emitting panel of the electronic device; when all pixels are in an on state, determining the pixels meeting preset conditions; and then controlling the pixels meeting the preset conditions to be turned off.

Optionally, the control IC is specifically configured to determine pixels that meet a preset condition; and controlling the other pixels except the pixels meeting the preset conditions to be turned on in all the pixels on the luminous plate of the electronic equipment.

The electronic device according to the embodiment of the present application may execute the fingerprint identification method in the embodiment shown in fig. 4, and the implementation principle and the beneficial effects of the fingerprint identification method are similar to those of the fingerprint identification method shown in fig. 4, and are not described herein.

The embodiment of the application also provides electronic equipment which can comprise a display screen, a fingerprint sensor and a control Integrated Circuit (IC), wherein the fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC. For example, see fig. 10 above.

And the control IC is used for determining the pixels to be turned off according to the signal-to-noise ratio of the expected fingerprint image.

And the fingerprint sensor is used for acquiring fingerprint signals and reflection signals of other pixels except the pixels to be turned off in the screen when the user performs finger touch operation on the display screen of the electronic device and the pixels to be turned off are turned off.

The fingerprint sensor is also used for sending fingerprint signals and reflected signals of other pixels in the screen to a control integrated circuit IC of the electronic device.

Optionally, the control IC is specifically configured to control on all pixels on the light emitting panel of the electronic device; when all pixels are in an on state, the control IC determines the pixels to be turned off; the control IC controls the pixels to be turned off.

Optionally, the control IC is specifically configured to determine a pixel to be turned off; and controls the other pixels except the pixel to be turned off to be turned on in all the pixels on the light emitting panel of the electronic device.

The electronic device according to the embodiment of the present application may execute the fingerprint identification method in the embodiment shown in fig. 5, and the implementation principle and the beneficial effects of the fingerprint identification method are similar to those of the fingerprint identification method shown in fig. 5, and are not described herein.

Fig. 11 is a schematic structural diagram of another electronic device 110 according to an embodiment of the present application, for example, please refer to fig. 11, wherein the electronic device 110 may include a processor 1101 and a memory 1102;

wherein the memory 1102 is used for storing program instructions;

the processor 1101 is configured to call and execute the program instructions stored in the memory 1102, perform the fingerprint identification method shown in the embodiment corresponding to fig. 3, or perform the fingerprint identification method shown in the embodiment corresponding to fig. 4, or perform the fingerprint identification method shown in the embodiment corresponding to fig. 5, and its implementation principle and beneficial effects are similar to those of the fingerprint identification method, and will not be described herein again.

The embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the fingerprint identification method shown in the embodiment corresponding to the above-mentioned fig. 3 is executed; or when the computer program is executed by the processor, the fingerprint identification method shown in the embodiment corresponding to fig. 4 is executed, or when the computer program is executed by the processor, the fingerprint identification method shown in the embodiment corresponding to fig. 5 is executed, and the implementation principle and the beneficial effects of the fingerprint identification method are similar to those of the fingerprint identification method, and are not repeated here.

The processor in the various embodiments described above may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a memory medium well known in the art such as random access memory (random access memory, RAM), flash memory, read-only memory (ROM), programmable read-only memory, or electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor reads instructions from the memory and, in combination with its hardware, performs the steps of the method described above.

Claims

1. A method of fingerprint identification, the method comprising:

when the pixels in a preset range around the small hole on the light-emitting plate right below the finger touch area are closed, fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen are collected by a fingerprint sensor of the electronic equipment;

the fingerprint sensor sends the fingerprint signals and the reflection signals of the other pixels in the screen to a control IC of the electronic equipment;

the control IC converts the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, and when receiving a fingerprint identification instruction, the control IC converts the electric signals into fingerprint signals and carries out fingerprint identification according to the fingerprint signals.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the preset range is a range taking the small hole as a circle center and R as a radius; wherein R is greater than or equal to the distance between two adjacent pixels.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

r is less than or equal to 100 microns.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the preset range is a range in which M x N pixel matrixes surrounding the small hole are arranged; wherein M, N are integers greater than or equal to 2.

5. The method of claim 4, wherein the step of determining the position of the first electrode is performed,

m is equal to N, and M is equal to 2 or 3.

6. The method according to any one of claims 2 to 4, wherein the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels in the screen than the pixels in a preset range when the pixels in the preset range around the small hole on the light emitting panel just under the finger touch area are turned off, comprising:

the control IC controls all pixels on the light-emitting plate to be turned on;

when all pixels are in an on state, the control IC determines the pixels in the preset range;

the control IC controls the pixel in the preset range to be closed;

and when the pixels in the preset range are closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixels in the preset range in a screen.

7. The method according to any one of claims 2 to 4, wherein the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels in the screen than the pixels in a preset range when the pixels in the preset range around the small hole on the light emitting panel just under the finger touch area are turned off, comprising:

the control IC determines pixels within the preset range;

the control IC controls the starting of other pixels except the pixels in the preset range in all the pixels on the light-emitting plate;

8. A method of fingerprint identification, the method comprising:

when a user performs finger touch operation on a display screen of the electronic equipment and when a pixel meeting a preset condition is closed, a fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels in the screen except the pixel meeting the preset condition; the preset condition is fingerprint signals in reflected signals from pixels, and the duty ratio of all signals generated by the fingerprint sensor is smaller than a preset threshold value;

The fingerprint sensor sends the fingerprint signals and the reflection signals of the other pixels in a screen to a control Integrated Circuit (IC) of the electronic equipment;

9. The method of claim 8, wherein the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels within the screen than the pixels satisfying the preset condition when the pixels satisfying the preset condition are turned off, comprising:

the control IC controls all pixels on a light-emitting plate of the electronic equipment to be turned on;

the control IC controls the pixel meeting the preset condition to be closed;

and when the pixels meeting the preset conditions are closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixels meeting the preset conditions in a screen.

10. The method of claim 8, wherein the fingerprint sensor of the electronic device collects fingerprint signals and reflection signals of other pixels within the screen than the pixels satisfying the preset condition when the pixels satisfying the preset condition are turned off, comprising:

the control IC determines the pixels meeting preset conditions;

the control IC controls the starting of other pixels except the pixels meeting the preset conditions in all pixels on a luminous plate of the electronic equipment;

11. A method of fingerprint identification, the method comprising:

when a user performs finger touch operation on a display screen of the electronic equipment, and when the pixel to be closed is closed, a fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in the screen;

12. The method of claim 11, wherein the fingerprint sensor of the electronic device capturing a fingerprint signal and a reflection signal of other pixels within the screen than the pixel to be turned off while the pixel to be turned off is turned off, comprising:

the control IC controls the pixel to be turned off;

and when the pixel to be closed is closed, the fingerprint sensor of the electronic equipment collects fingerprint signals and reflection signals of other pixels except the pixel to be closed in a screen.

13. The method of claim 11, wherein the fingerprint sensor of the electronic device capturing a fingerprint signal and a reflection signal of other pixels within the screen than the pixel to be turned off while the pixel to be turned off is turned off, comprising:

the control IC determines the pixel to be turned off;

the control IC controls the other pixels except the pixel to be turned off to be turned on in all pixels on the luminous plate of the electronic equipment;

14. An electronic device is characterized by comprising a display screen, a fingerprint sensor and a control Integrated Circuit (IC), wherein the fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC;

the control IC is used for determining a finger touch area according to the finger touch operation when a user performs the finger touch operation on the display screen;

the fingerprint sensor is used for collecting fingerprint signals and reflection signals of other pixels except the pixels in a preset range in a screen when the pixels in the preset range around the small hole on the light-emitting plate right below the finger touch area are closed;

The fingerprint sensor is further used for sending the fingerprint signals and the reflection signals of the other pixels in a screen to the control IC of the electronic device;

the control IC is also used for converting the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, converting the electric signals into fingerprint signals when receiving a fingerprint identification instruction, and carrying out fingerprint identification according to the fingerprint signals.

15. The apparatus of claim 14, wherein the device comprises a plurality of sensors,

16. The apparatus of claim 15, wherein the device comprises a plurality of sensors,

r is less than or equal to 100 microns.

17. The apparatus of claim 14, wherein the device comprises a plurality of sensors,

18. The apparatus of claim 17, wherein the device comprises a plurality of sensors,

m is equal to N, and M is equal to 2 or 3.

19. The apparatus according to any one of claims 15 to 17, wherein,

The control IC is specifically used for controlling all pixels on the light-emitting plate to be turned on; when all pixels are in an on state, determining the pixels in the preset range; then controlling the pixels in the preset range to be closed;

20. The apparatus according to any one of claims 15 to 17, wherein,

the control IC is specifically configured to determine pixels within the preset range; and controlling the other pixels except the pixels in the preset range to be turned on in all the pixels on the light-emitting plate;

21. An electronic device is characterized by comprising a display screen, a fingerprint sensor and a control Integrated Circuit (IC), wherein the fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC;

the control IC is used for converting the fingerprint signals and the reflection signals of other pixels in the screen into electric signals, converting the electric signals into fingerprint signals when receiving a fingerprint identification instruction, and carrying out fingerprint identification according to the fingerprint signals.

22. The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the control IC is specifically used for controlling all pixels on a light-emitting plate of the electronic equipment to be turned on; when all pixels are in an on state, determining the pixels meeting preset conditions; then controlling the pixels meeting the preset conditions to be closed;

The fingerprint sensor is specifically configured to collect fingerprint signals and reflection signals of other pixels in the screen except for the pixels meeting the preset conditions when the pixels meeting the preset conditions are turned off.

23. The apparatus of claim 21, wherein the device comprises a plurality of sensors,

the control IC is specifically configured to determine the pixels that meet a preset condition; and controlling the other pixels except the pixels meeting the preset conditions to be turned on in all the pixels on the luminous plate of the electronic equipment;

24. An electronic device is characterized by comprising a display screen, a fingerprint sensor and a control Integrated Circuit (IC), wherein the fingerprint sensor is arranged at the bottom of the display screen and is connected with the control IC;

the control IC is used for determining pixels to be closed according to the signal-to-noise ratio of the expected fingerprint image;

the fingerprint sensor is used for acquiring fingerprint signals and reflection signals of other pixels except the pixels to be closed in a screen when a user performs finger touch operation on a display screen of the electronic equipment and the pixels to be closed are closed;

The fingerprint sensor is further used for sending the fingerprint signals and the reflection signals of the other pixels in the screen to a control Integrated Circuit (IC) of the electronic equipment;

25. The apparatus of claim 24, wherein the device comprises a plurality of sensors,

the control IC is specifically used for controlling all pixels on a light-emitting plate of the electronic equipment to be turned on; when all pixels are in an on state, the control IC determines the pixels to be turned off; the control IC controls the pixel to be turned off;

26. The apparatus of claim 24, wherein the device comprises a plurality of sensors,

the control IC is specifically configured to determine the pixel to be turned off; and controlling other pixels except the pixel to be turned off to be turned on in all pixels on a luminous plate of the electronic equipment;

27. A computer readable storage medium, characterized in that a computer program is stored on the computer readable storage medium, which when being executed by a processor performs the fingerprint identification method according to any of the preceding claims 1-7; alternatively, the fingerprint identification method as claimed in any of the preceding claims 8-10 is performed when the computer program is executed by a processor; alternatively, the fingerprint identification method as claimed in any of the preceding claims 11-13 is performed when the computer program is executed by a processor.