CN109241953B - Electronic device and fingerprint image processing method - Google Patents

Abstract

Embodiments of the present application disclose an electronic device, a fingerprint image processing method and related products, which are applied to electronic devices. The electronic device includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. A module is provided below the screen. There is a second polarizer, and the optical fingerprint recognition module is arranged below the second polarizer. The polarization directions of the first polarizer and the second polarizer are consistent; the first polarizer and the second polarizer are used to detect the first optical noise. Filtering; the second polarizer is used to filter the second optical noise; the first optical noise comes from the screen light of the screen and is directed to the light of the optical fingerprint recognition module; the second optical noise is the screen light from the screen, The light shines away from the optical fingerprint recognition module and is reflected by the glass cover on the outside of the screen. Adopting the embodiments of the present application can reduce the impact of screen light on fingerprint image imaging, which is beneficial to improving fingerprint collection efficiency.

Description

Electronic equipment, fingerprint image processing method

Technical field

This application relates to the technical field of electronic equipment, and specifically relates to an electronic equipment, a fingerprint image processing method and related products.

Background technique

With the widespread use of electronic devices (such as mobile phones, tablets, etc.), electronic devices can support more and more applications and become more and more powerful. Electronic devices are developing in a diversified and personalized direction and have become a part of users' lives. indispensable electronic supplies.

Fingerprint recognition technology has also become a standard technology for electronic devices. With the development of fingerprint recognition technology, optical fingerprint recognition modules are currently more popular. This optical fingerprint recognition module can be well integrated under the screen. However, optical fingerprint recognition modules Because the screen of the identification module emits light, the screen light causes certain interference to the fingerprint image imaging to a certain extent, thus reducing the fingerprint collection efficiency.

Contents of the invention

Embodiments of the present application provide an electronic device, a fingerprint image processing method and related products, which can reduce the impact of screen light on fingerprint image imaging and help improve fingerprint collection efficiency.

In a first aspect, embodiments of the present application provide an electronic device. The electronic device includes a screen provided with a first polarizer, a second polarizer, and an optical fingerprint recognition module. The second polarizer is provided below the screen. piece, the optical fingerprint recognition module is disposed below the second polarizer, and the polarization directions of the first polarizer and the second polarizer are consistent;

The first polarizer and the second polarizer are used to filter first optical noise;

The second polarizer is used to filter second optical noise;

The first optical noise comes from the screen light of the screen and is directed towards the optical fingerprint recognition module; the second optical noise is the screen light from the screen and is directed away from the optical fingerprint. The light irradiated by the identification module and reflected by the glass cover on the outside of the screen.

In a second aspect, embodiments of the present application provide a fingerprint image processing method, which is applied to an electronic device. The electronic device includes a screen provided with a first polarizer, a second polarizer, and an optical fingerprint recognition module. Below the screen The second polarizer is provided, the optical fingerprint recognition module is disposed below the second polarizer, and the polarization directions of the first polarizer and the second polarizer are consistent; the method includes:

When a fingerprint collection instruction is detected, the screen is illuminated and the optical fingerprint recognition module is enabled, wherein the first optical noise corresponding to the emitted light of the screen is absorbed by the first polarizer and the second polarizer. The second optical noise corresponding to the emitted light of the screen is filtered by the second polarizer. The first optical noise comes from the screen light of the screen and is directed to the optical fingerprint recognition module. Light; the second optical noise is screen light from the screen, light irradiated away from the optical fingerprint recognition module and reflected by the glass cover outside the screen;

The optical fingerprint recognition module collects the light reflected by the user's fingerprint from the screen light, and obtains a fingerprint image after processing.

In a second aspect, embodiments of the present application provide a fingerprint image processing device for use in electronic equipment. The electronic equipment includes a screen provided with a first polarizer, a second polarizer, and an optical fingerprint recognition module. Below the screen The second polarizer is provided, the optical fingerprint recognition module is disposed below the second polarizer, the polarization directions of the first polarizer and the second polarizer are consistent; the device includes: starting unit and processing unit, where,

The startup unit is configured to light up the screen and activate the optical fingerprint recognition module when a fingerprint collection instruction is detected, wherein the first optical noise corresponding to the emitted light of the screen is absorbed by the first polarized light. filter and the second polarizer, the second optical noise corresponding to the emitted light of the screen is filtered by the second polarizer, the first optical noise comes from the screen light of the screen and is emitted to the The light of the optical fingerprint recognition module; the second optical noise is the screen light from the screen, the light irradiated away from the optical fingerprint recognition module and reflected by the glass cover outside the screen;

The processing unit is configured to collect the light reflected by the screen light from the user's fingerprint through the optical fingerprint recognition module, and obtain a fingerprint image after processing.

In a third aspect, embodiments of the present application provide an electronic device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured to process The program is executed by a computer, and the above program includes instructions for executing the steps in the second aspect of the embodiment of the present application.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the steps of the embodiment of the present application. Some or all of the steps described in the second aspect.

In the fifth aspect, embodiments of the present application provide a computer program product, wherein the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the above-mentioned computer program is operable to cause the computer to execute the implementation of the present application. Examples include some or all of the steps described in the second aspect. The computer program product may be a software installation package.

It can be seen that the electronic device, fingerprint image processing method and related products described in the embodiments of this application include a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. A fingerprint recognition module is provided below the screen. There is a second polarizer, and the optical fingerprint recognition module is arranged below the second polarizer. The polarization directions of the first polarizer and the second polarizer are consistent. The first polarizer and the second polarizer are used to detect the first optical noise. Filtering, the second polarizer is used to filter the second optical noise, the first optical noise comes from the screen light of the screen and the light directed to the optical fingerprint recognition module; the second optical noise is the screen light from the screen, The light irradiates away from the optical fingerprint recognition module and is reflected by the glass cover on the outside of the screen. Therefore, a polarizer is also added to the bottom of the screen, and the polarization direction is the same as the polarization direction above the display layer, then the first optical noise can be The light is directly attenuated by half, while the light of the second optical noise will change its polarization direction after passing through the screen medium. After passing through the polarizer at the bottom of the screen, the light will also attenuate. However, the correct fingerprint image light has the same direction due to the two layers of polarizers. , so no loss will be caused.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of another electronic device provided by an embodiment of the present application;

Figure 3 is a schematic structural diagram of another electronic device provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of an optical fingerprint recognition module provided by an embodiment of the present application;

Figure 5 is a schematic demonstration diagram of a polarizer provided by an embodiment of the present application;

Figure 6 is a schematic flow diagram of another electronic device provided by an embodiment of the present application;

Figure 7 is a schematic diagram showing the fingerprint collection area of the electronic device provided by the embodiment of the present application;

Figure 8 is a schematic flow chart of a fingerprint image processing method provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of another electronic device provided by an embodiment of the present application;

Figure 10 is a functional unit block diagram of a fingerprint image processing device provided by an embodiment of the present application.

Detailed ways

In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

The electronic devices involved in the embodiments of this application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices (smart watches, smart bracelets, wireless headsets, augmented reality/virtual reality devices, smart glasses), Computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (UE), mobile stations (MS), terminal devices (terminal devices), etc. For convenience of description, the devices mentioned above are collectively referred to as electronic devices.

The embodiments of this application are introduced in detail below.

Please refer to Figure 1. Figure 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application. The electronic device 100 includes a storage and processing circuit 110, and a sensor 170 connected to the storage and processing circuit 110. The sensor 170 includes a camera. ,in:

Electronic device 100 may include control circuitry, which may include storage and processing circuitry 110 . The storage and processing circuitry 110 may be memory such as hard drive memory, non-volatile memory (such as flash memory or other electronically programmable read-only memories used to form solid state drives, etc.), volatile memory (such as static or dynamic random access memory). memory, etc.), etc., are not limited by the embodiments of this application. Processing circuitry in storage and processing circuitry 110 may be used to control the operation of electronic device 100 . The processing circuit can be implemented based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, display driver integrated circuits, etc.

The storage and processing circuitry 110 may be used to run software in the electronic device 100, such as Internet browsing applications, Voice over Internet Protocol (VOIP) phone calling applications, email applications, media playback applications, operating system functions wait. These software can be used to perform some control operations, for example, camera-based image acquisition, ambient light measurement based on ambient light sensor, proximity sensor measurement based on proximity sensor, information based on status indicators such as status indicators such as light-emitting diodes. Display functions, touch sensor-based touch event detection, functions associated with displaying information on multiple (e.g., layered) screens, operations associated with performing wireless communication functions, operations associated with collecting and generating audio signals , control operations associated with collecting and processing button press event data, and other functions in the electronic device 100 are not limited by the embodiments of this application.

Electronic device 100 may include input-output circuitry 150 . The input-output circuit 150 may be used to enable the electronic device 100 to input and output data, that is, allow the electronic device 100 to receive data from an external device and also allow the electronic device 100 to output data from the electronic device 100 to an external device. The input-output circuit 150 may further include a sensor 170 . Sensor 170 may include an ambient light sensor, an optical and capacitive based proximity sensor, an optical fingerprint recognition module, a touch sensor (e.g., based on an optical touch sensor and/or a capacitive touch sensor, where the touch sensor may be a touch display). part, or can be used independently as a touch sensor structure), acceleration sensor, camera, and other sensors. The camera can be a front camera or a rear camera. The optical fingerprint recognition module can be integrated under the screen to collect fingerprint images. .

Input-output circuitry 150 may also include one or more screens, such as screen 130. The screen 130 may include one or a combination of a liquid crystal display screen, an organic light-emitting diode display screen, an electronic ink display screen, a plasma display screen, a display screen using other display technologies. Screen 130 may include a touch sensor array (ie, screen 130 may be a touch display). The touch sensor may be a capacitive touch sensor formed from an array of transparent touch sensor electrodes, such as indium tin oxide (ITO) electrodes, or may be a touch sensor formed using other touch technologies, such as sonic touch, pressure sensitive touch, resistive Touch, optical touch, etc. are not limited in the embodiments of this application.

Electronic device 100 may also include audio component 140 . Audio component 140 may be used to provide audio input and output functionality to electronic device 100 . Audio components 140 in electronic device 100 may include speakers, microphones, buzzers, tone generators, and other components for generating and detecting sound.

Communication circuitry 120 may be used to provide electronic device 100 with the ability to communicate with external devices. Communication circuitry 120 may include analog and digital input-output interface circuitry, and wireless communication circuitry based on radio frequency signals and/or optical signals. Wireless communication circuits in communication circuit 120 may include radio frequency transceiver circuits, power amplifier circuits, low noise amplifiers, switches, filters, and antennas. For example, the wireless communication circuit in the communication circuit 120 may include circuitry for supporting near field communication (Near Field Communication, NFC) by transmitting and receiving near field coupled electromagnetic signals. For example, communication circuitry 120 may include a near field communication antenna and a near field communication transceiver. Communication circuitry 120 may also include cellular phone transceivers and antennas, wireless local area network transceiver circuits and antennas, and the like.

The electronic device 100 may further include batteries, power management circuitry, and other input-output units 160 . The input-output unit 160 may include buttons, joysticks, click wheels, scroll wheels, touch pads, keypads, keyboards, cameras, light emitting diodes and other status indicators, etc.

A user may input commands through the input-output circuit 150 to control the operation of the electronic device 100 and may use the output data of the input-output circuit 150 to receive status information and other output from the electronic device 100 .

In the related art, please refer to Figure 2. Figure 2 shows a schematic structural diagram of an electronic device 200, in which 201 is a screen, 202 is an optical fingerprint recognition module, 21 is a glass cover outside the screen, and the optical fingerprint recognition module The group 202 can be well integrated under the screen 21. Its main working principle is: using the screen itself to emit light, when a finger is placed on the screen, the self-illumination is reflected when it reaches the finger, and the optical fingerprint recognition module receives the reflected light signal. , due to the uneven texture of fingerprints, the light absorption amplitude is different, thus obtaining fingerprint images with different light and dark. However, on the one hand, the screen light allows the optical fingerprint recognition module to collect fingerprint images. On the other hand, it will also create some optical noise. Specifically, it may include first optical noise and second optical noise. The first optical noise comes from the screen light of the screen and radiates to the light of the optical fingerprint recognition module. The second optical noise is the screen light from the screen and radiates to the optical fingerprint recognition module. The light irradiated away from the optical fingerprint recognition module and reflected by the glass cover on the outside of the screen results in low fingerprint image collection efficiency due to the existence of the first optical noise and the second optical noise.

Please refer to Figure 3. Figure 3 is a schematic structural diagram of another electronic device disclosed in an embodiment of the present application. The electronic device 300 includes a screen 301 provided with a first polarizer, a second polarizer 302 and an optical fingerprint recognition module. 303. The second polarizer 302 is provided below the screen 301, and the optical fingerprint recognition module 303 is provided below the second polarizer 302. The first polarizer and the second polarizer 303 The polarization direction is consistent;

The first polarizer and the second polarizer 102 are used to filter the first optical noise;

The second polarizer is used to filter second optical noise;

The first optical noise comes from the screen light of the screen and is directed towards the optical fingerprint recognition module; the second optical noise is the screen light from the screen and is directed away from the optical fingerprint. The light irradiated by the recognition module and reflected by the glass cover 31 on the outside of the screen.

Among them, in the embodiment of the present application, the full name of polarizer is polarizer, which can control the polarization direction of a specific light beam. When natural light passes through a polarizer, the light whose vibration direction is perpendicular to the transmission axis of the polarizer will be absorbed, leaving only the polarized light whose vibration direction is parallel to the transmission axis of the polarizer. Usually, there is also a layer of polarizer inside the screen stack of electronic equipment, that is, the first polarizer, above the display layer. Its function is to reduce the reflection of external light and prevent the screen display from turning white. Of course, the light from the optical fingerprint passes through There will be attenuation after the polarizer.

In a possible example, the second polarizer 302 is integrated with the screen 301 or is arranged in a stack.

The size of the second polarizer may be consistent with the size of the screen, or the size of the second polarizer may be smaller than the first polarizer, but can completely cover the optical fingerprint recognition module.

In a possible example, as shown in Figure 4, Figure 4 is a schematic structural diagram of the optical fingerprint recognition module 303 shown in Figure 3. The optical fingerprint recognition module 303 includes a collimating lens 41, an infrared IR film 42, In the optical fingerprint sensor 43 , the second polarizer 302 is disposed above the collimating lens 41 , and the infrared IR42 film is disposed on the surface of the optical fingerprint sensor 43 .

Among them, the infrared IR film is used to filter infrared light. A collimating lens is an instrument that converts light from each point in the aperture column into a parallel collimated beam of light. Optical fingerprint sensors are used to achieve fingerprint imaging.

In specific implementation, as shown in Figure 5, Figure 5 shows a schematic diagram of a demonstration of a polarizer. In the electronic device shown in Figure 3, the first polarizer can detect light in a specific direction in the first optical noise and the second optical noise. The vibration is absorbed so that the first optical noise and the second optical noise are attenuated. At the same time, since the second polarizer is in the same direction as the first polarizer, the second polarizer will not attenuate the light emitted by the fingerprint, ultimately achieving noise reduction. Improve fingerprint image collection accuracy.

In a possible example, the second polarizer 302 and the optical fingerprint recognition module 303 are integrated or stacked.

In a possible example, the second polarizer 302 is integrated with the collimating lens 41 or is arranged in a stack.

Among them, the above-mentioned integrated setting refers to embedding the second polarizer into the collimating lens to form a collimating lens with polarizing function. The stacked setting refers to superimposing a layer of polarizing film on the side of the collimating lens close to the optical fingerprint sensor.

In a possible example, as shown in FIG. 6 , which is another modified structure of the electronic device shown in FIG. 3 , the improvement lies in adding a third polarizer 44 to the optical fingerprint recognition module. The fingerprint recognition module 303 includes a collimating lens 41, a third polarizer 44, an infrared IR film 42, and an optical fingerprint sensor 43. The third polarizer 44 is disposed between the IR film 42 and the optical fingerprint sensor 43. , the infrared IR film 42 is disposed on the surface of the optical fingerprint sensor 43 .

In specific implementation, in the electronic device shown in FIG. 6 , the first polarizer, the second polarizer, and the third polarizer can absorb light vibrations in specific directions in the first optical noise and the second optical noise, so that the third polarizer can absorb the light vibration in the first optical noise and the second optical noise. The first optical noise and the second optical noise are attenuated. At the same time, since the second polarizer and the third polarizer are in the same direction as the first polarizer, the second polarizer will not attenuate the light emitted by the fingerprint, ultimately achieving noise reduction and improving fingerprint recognition. Image acquisition accuracy.

In a possible example, the IR film 42 and the third polarizer 44 are integrated or stacked.

In a possible example, as shown in Figure 7, the optical fingerprint recognition module 303 is located in a preset area below the electronic device. That is to say, only a part of the area below the screen can be used to collect fingerprints. The preset area can also be called the fingerprint collection area.

In a possible example, the screen includes a liquid crystal display LCD screen or an organic light-emitting diode OLED display screen.

In a possible example, the first optical noise and/or the second optical noise are light emitted by the preset area.

It can be seen that the electronic device described in the embodiment of the present application includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. The second polarizer is provided below the screen, and the optical fingerprint The identification module is arranged below the second polarizer. The polarization directions of the first polarizer and the second polarizer are consistent. The first polarizer and the second polarizer are used to filter the first optical noise. The second polarizer is used to filter the first optical noise. The second optical noise is filtered. The first optical noise comes from the screen light of the screen and radiates light to the optical fingerprint recognition module; the second optical noise comes from the screen light of the screen and radiates light away from the optical fingerprint recognition module. And the light is reflected by the glass cover on the outside of the screen. Therefore, if a polarizer is also added to the bottom of the screen, and the polarization direction is the same as the polarization direction above the display layer, the light of the first optical noise can be directly attenuated by half, and the second The light of optical noise will change its polarization direction after passing through the screen medium, and the light will attenuate after passing through the polarizer at the bottom of the screen. However, the correct fingerprint image light will not cause loss because the two layers of polarizers have the same direction.

Please refer to Figure 8. Figure 8 is a schematic flow chart of a fingerprint image processing method provided by an embodiment of the present application. As shown in the figure, it is applied to the electronic device shown in Figure 1. The electronic device includes a first polarized light The screen, the second polarizer and the optical fingerprint recognition module of the film, the second polarizer is provided below the screen, the optical fingerprint recognition module is provided below the second polarizer, the first polarizer The polarization direction of the film is consistent with that of the second polarizer; the fingerprint image processing method includes:

801. When a fingerprint collection instruction is detected, light the screen and enable the optical fingerprint recognition module, wherein the first optical noise corresponding to the emitted light of the screen is absorbed by the first polarizer and the third Two polarizers are used for filtering. The second optical noise corresponding to the emitted light of the screen is filtered by the second polarizer. The first optical noise comes from the screen light of the screen and is directed to the optical fingerprint recognition module. A set of light; the second optical noise is the screen light from the screen, the light irradiated away from the optical fingerprint recognition module and reflected by the glass cover outside the screen.

Among them, the fingerprint collection instruction can be generated when it is detected that the user presses the optical fingerprint recognition module.

802. Use the optical fingerprint recognition module to collect the light reflected by the screen light from the user's fingerprint, and obtain a fingerprint image after processing.

Among them, the optical fingerprint recognition module can be controlled to collect the optical reflection of the fingerprint, and obtain the fingerprint image after processing.

In a possible example, the above step 801 lights the screen, specifically:

Light up the preset area of the screen, which is only the fingerprint collection area.

Among them, the above-mentioned preset area is the area corresponding to the corresponding optical fingerprint recognition module located below the screen. Specifically, it can be understood with reference to Figure 7.

It can be seen that the fingerprint image processing method described in the embodiment of the present application is applied to an electronic device. The electronic device includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. A screen is provided below the screen. The second polarizer, the optical fingerprint recognition module is arranged below the second polarizer, the polarization directions of the first polarizer and the second polarizer are consistent. During the fingerprint collection process, the first polarizer and the second polarizer are used to The first optical noise is filtered, and the second polarizer is used to filter the second optical noise. The first optical noise comes from the screen light of the screen and the light directed to the optical fingerprint recognition module; the second optical noise comes from The screen light of the screen shines away from the optical fingerprint recognition module and is reflected by the glass cover on the outside of the screen. Therefore, a polarizer is also added to the bottom of the screen, and the polarization direction is the same as the polarization direction above the display layer. The light of the first optical noise is directly attenuated by half, while the light of the second optical noise will change its polarization direction after passing through the screen medium. After passing through the polarizer at the bottom of the screen, the light will also attenuate, and the correct fingerprint image light will be due to two The polarizers of the two layers have the same direction, so there will be no loss and the efficiency of fingerprint collection can be improved.

Consistent with the above embodiments, please refer to Figure 9. Figure 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in the figure, the electronic device includes a processor, a memory, a communication interface and one or more program, the electronic device includes an optical fingerprint recognition module, the electronic device also includes a screen provided with a first polarizer, a second polarizer, the second polarizer is provided below the screen, and the optical fingerprint The identification module is disposed below the second polarizer, and the polarization directions of the first polarizer and the second polarizer are consistent; wherein the above one or more programs are stored in the above memory and configured by The above-mentioned processor executes. In the embodiment of the present application, the above-mentioned program includes instructions for performing the following steps:

When a fingerprint collection instruction is detected, the screen is illuminated and the optical fingerprint recognition module is enabled, wherein the first optical noise corresponding to the emitted light of the screen is absorbed by the first polarizer and the second polarizer. The second optical noise corresponding to the emitted light of the screen is filtered by the second polarizer. The first optical noise comes from the screen light of the screen and is directed to the optical fingerprint recognition module. Light; the second optical noise is screen light from the screen, light irradiated away from the optical fingerprint recognition module and reflected by the glass cover outside the screen;

The optical fingerprint recognition module collects the light reflected by the user's fingerprint from the screen light, and obtains a fingerprint image after processing.

It can be seen that the electronic device described in the embodiment of the present application includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. The second polarizer is provided below the screen, and the optical fingerprint The identification module is arranged below the second polarizer. The polarization directions of the first polarizer and the second polarizer are consistent. The first polarizer and the second polarizer are used to filter the first optical noise. The second polarizer is used to filter the first optical noise. The second optical noise is filtered. The first optical noise comes from the screen light of the screen and radiates light to the optical fingerprint recognition module; the second optical noise comes from the screen light of the screen and radiates light away from the optical fingerprint recognition module. And the light is reflected by the glass cover on the outside of the screen. Therefore, if a polarizer is also added to the bottom of the screen, and the polarization direction is the same as the polarization direction above the display layer, the light of the first optical noise can be directly attenuated by half, and the second The light of optical noise will change its polarization direction after passing through the screen medium, and the light will attenuate after passing through the polarizer at the bottom of the screen. However, the correct fingerprint image light will not cause loss because the two layers of polarizers have the same direction.

The above mainly introduces the solution of the embodiment of the present application from the perspective of the execution process on the method side. It can be understood that, in order to implement the above functions, the electronic device includes corresponding hardware structures and/or software modules that perform each function. Persons skilled in the art should easily realize that, with the units and algorithm steps of each example described in conjunction with the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Embodiments of the present application can divide the electronic device into functional units according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated units can be implemented in the form of hardware or software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods.

FIG. 10 is a functional unit block diagram of the fingerprint image processing device 1000 involved in the embodiment of the present application. The fingerprint image processing device 1000 is applied to electronic equipment. The electronic equipment includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. The second polarizer is provided below the screen. The optical fingerprint recognition module is disposed below the second polarizer, and the polarization directions of the first polarizer and the second polarizer are consistent; the device 1000 includes: a startup unit 1001 and a processing unit 1002, wherein ,

The starting unit 1001 is configured to light up the screen and activate the optical fingerprint recognition module when a fingerprint collection instruction is detected, wherein the first optical noise corresponding to the emitted light of the screen is absorbed by the first polarizer. and filtered by the second polarizer. The second optical noise corresponding to the emitted light of the screen is filtered by the second polarizer. The first optical noise comes from the screen light of the screen and is emitted to the The light of the optical fingerprint recognition module; the second optical noise is the screen light from the screen, the light irradiated away from the optical fingerprint recognition module and reflected by the glass cover outside the screen;

The processing unit 1002 is configured to collect the light reflected by the screen light from the user's fingerprint through the optical fingerprint recognition module, and obtain a fingerprint image after processing.

It can be seen that the fingerprint image processing device described in the embodiment of the present application is applied to electronic equipment. The electronic equipment includes a screen provided with a first polarizer, a second polarizer and an optical fingerprint recognition module. A screen is provided below the screen. The second polarizer, the optical fingerprint recognition module is arranged below the second polarizer, the polarization directions of the first polarizer and the second polarizer are consistent, the first polarizer and the second polarizer are used to filter the first optical noise , the second polarizer is used to filter the second optical noise. The first optical noise comes from the screen light of the screen and is directed to the light of the optical fingerprint recognition module; the second optical noise is the screen light from the screen and is directed to the optical fingerprint recognition module. Stay away from the light irradiated by the optical fingerprint recognition module and reflected by the glass cover on the outside of the screen. Therefore, a polarizer is also added to the bottom of the screen, and the polarization direction is the same as the polarization direction above the display layer, then the light of the first optical noise can be It is directly attenuated by half, while the light of the second optical noise will change its polarization direction after passing through the screen medium. After passing through the polarizer at the bottom of the screen, the light will also attenuate. However, the correct fingerprint image light has the same direction due to the two layers of polarizers. So no loss will be caused.

Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes the computer to execute part or all of the steps of any method described in the above method embodiments. , the above-mentioned computer includes electronic equipment.

Embodiments of the present application also provide a computer program product. The computer program product includes a non-transitory computer-readable storage medium storing a computer program. The computer program is operable to cause the computer to execute any of the methods described in the above method embodiments. Some or all steps of a method. The computer program product may be a software installation package, and the computer includes electronic equipment.

It should be noted that for the sake of simple description, the foregoing method embodiments are expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence. Because in accordance with this application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily necessary for this application.

In the above embodiments, each embodiment is described with its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be other divisions. For example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical or other forms.

The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, It includes several instructions to cause a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the above methods in various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable memory. The memory can include: a flash disk. , read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.

The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and the core idea of the present application; at the same time, for Those of ordinary skill in the art will have changes in the specific implementation and application scope based on the ideas of the present application. In summary, the content of this description should not be understood as a limitation of the present application.

Claims (10)

1. The electronic equipment is characterized by comprising a screen provided with a first polaroid, a second polaroid and an optical fingerprint identification module, wherein the second polaroid is arranged below the screen, the optical fingerprint identification module is arranged below the second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent;

the first polaroid and the second polaroid are used for filtering first optical noise;

the second polaroid is used for filtering second optical noise;

the first optical noise is from screen light of the screen and irradiates to light of the optical fingerprint identification module; the second optical noise is screen light from the screen, and irradiates light far away from the optical fingerprint identification module and is reflected by the glass cover plate outside the screen;

the optical fingerprint identification module comprises a collimating lens, a third polaroid, an infrared IR film and an optical fingerprint sensor, wherein the third polaroid is arranged between the IR film and the optical fingerprint sensor, the infrared IR film is arranged on the surface of the optical fingerprint sensor, and the polarization directions of the third polaroid and the second polaroid are consistent.

2. The electronic device of claim 1, wherein the second polarizer is integrally disposed with the screen or is disposed in a stack.

3. The electronic device of claim 1 or 2, wherein the optical fingerprint recognition module comprises a collimating lens, an infrared IR film, and an optical fingerprint sensor, the second polarizer is disposed above the collimating lens, and the infrared IR film is disposed on a surface of the optical fingerprint sensor.

4. The electronic device of claim 3, wherein the second polarizer is integrated with the optical fingerprint recognition module or laminated.

5. The electronic device of claim 4, wherein the second polarizer is integrally disposed with the collimating lens, or is disposed in a stack.

6. The electronic device of claim 1 or 2, wherein the optical fingerprint recognition module is located in a predetermined area below the electronic device.

7. The electronic device of claim 6, wherein the first optical noise and/or the second optical noise is light emitted by the predetermined area.

8. The electronic device of claim 1, wherein the IR film and the third polarizer are integrally disposed, or are stacked.

9. The electronic device of claim 1 or 2, wherein the screen comprises a liquid crystal display, LCD, screen or an organic light emitting diode, OLED, display screen.

10. The fingerprint image processing method is characterized by being applied to electronic equipment, wherein the electronic equipment comprises a screen provided with a first polaroid, a second polaroid and an optical fingerprint identification module, the second polaroid is arranged below the screen, the optical fingerprint identification module is arranged below the second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent; the optical fingerprint identification module comprises a collimating lens, a third polaroid, an infrared IR film and an optical fingerprint sensor, wherein the third polaroid is arranged between the IR film and the optical fingerprint sensor, the infrared IR film is arranged on the surface of the optical fingerprint sensor, and the polarization directions of the third polaroid and the second polaroid are consistent; the method comprises the following steps:

when a fingerprint acquisition instruction is detected, the screen is lightened, the optical fingerprint identification module is started, wherein first optical noise corresponding to the emitted light of the screen is filtered by the first polaroid and the second polaroid, second optical noise corresponding to the emitted light of the screen is filtered by the second polaroid, and the first optical noise is from screen light of the screen and irradiates to the light of the optical fingerprint identification module; the second optical noise is screen light from the screen, and irradiates light far away from the optical fingerprint identification module and is reflected by the glass cover plate outside the screen;

and collecting the light reflected by the user fingerprint by the screen light through the optical fingerprint identification module, and processing the light to obtain a fingerprint image.