WO2020164625A1

WO2020164625A1 - Display screen module, electronic device, and fingerprint image processing method

Info

Publication number: WO2020164625A1
Application number: PCT/CN2020/075437
Authority: WO
Inventors: 林进全
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-02-14
Filing date: 2020-02-14
Publication date: 2020-08-20
Also published as: CN109886177B; CN109886177A

Abstract

In embodiments of the present application, disclosed are a display screen module, an electronic device, and a fingerprint image processing method. The electronic device comprises a display screen module and an under-screen fingerprint sensor provided in a first preset region of the display screen module; the display screen module is provided with a polarizing film; and the polarizing film is used for filtering first light reflected and/or refracted by a wave trough region of a passed finger fingerprint, and reserving second light reflected and/or refracted by a wave crest region of the passed finger fingerprint, wherein the first light is light of which an incident angle relative to the polarizing film is smaller than a preset angle in the reflected and/or refracted light of the finger fingerprint, and the second light is light of which the incident angle relative to the polarizing film is larger than or equal to the preset angle in the reflected and/or refracted light of the finger fingerprint. The embodiments of the present application are beneficial to improving the processing speed rate of fingerprint acquisition of the electronic device and the reliability of fingerprint identification.

Description

Display module, electronic equipment and fingerprint image processing method

Technical field

This application relates to the technical field of electronic equipment, and in particular to a display screen module, electronic equipment and a fingerprint image processing method.

Background technique

With the continuous development of fingerprint acquisition technology, electronic devices such as mobile phones can now support fingerprint recognition under the screen. Most electronic devices use optical camera solutions. When image acquisition is based on optical cameras, it is difficult to solve imaging under high light conditions. When imaging the fingerprints of dry fingers, the crests and troughs in the fingerprint image obtained after imaging are not obvious due to the smaller the gap of the finger gully. At the same time, the two-dimensional plane fake finger can be deceived after taking pictures. Successfully deceive the camera to capture the fingerprint image, resulting in a security risk in the fingerprint image obtained.

Summary of the invention

The embodiments of the present application provide a display screen module, an electronic device, and a fingerprint image processing method, in order to improve the processing speed rate of fingerprint collection by the electronic device and the reliability of fingerprint recognition.

In the first aspect, an embodiment of the present application provides an under-screen fingerprint module, which is applied to an electronic device, and the electronic device includes the display screen module and an under-screen set in a first preset area of the display screen module Fingerprint sensor; the display screen module is provided with a polarizing film;

The polarizing film is used to filter the first light reflected and/or refracted by the wave trough area of the passing finger fingerprint, and retain the second light reflected and/or refracted by the wave crest area of the passing finger fingerprint, wherein the first light The light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is less than a preset angle, and the second light is the reflected and/or refracted light of the finger fingerprint with respect to The incident angle of the polarizing film is greater than or equal to the predetermined angle, and the reflected and/or refracted light of the finger fingerprint is the emitted light of the display module and/or the ambient light reflected by the finger fingerprint And/or refracted light.

In a second aspect, an embodiment of the present application provides an electronic device including a display screen module and an under-screen fingerprint sensor arranged in a first predetermined area of the display screen module; the display screen module is provided with a polarizing film;

In a third aspect, an embodiment of the present application provides a fingerprint image processing method, which is applied to an electronic device, and the electronic device includes the display screen module and an under-screen fingerprint set in a first preset area of the display screen module Sensor, the display screen module is provided with a polarizing film; the method includes:

When a fingerprint collection instruction is detected, light up a second preset area of the display screen module, where the second preset area is a circular display area associated with the first preset area;

The under-screen fingerprint sensor is activated, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the second light reflected and/or refracted by the wave peak area of the finger fingerprint is The polarizing film is retained, the first light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is less than a preset angle, and the second light is the finger fingerprint Among the reflected and/or refracted rays of light with respect to the polarizing film, the incident angle is greater than or equal to the predetermined angle, and the reflected and/or refracted rays of the fingerprint of the finger are the emitted rays of the display module and /Or ambient light reflected and/or refracted by the finger fingerprint;

The second light is collected by the fingerprint sensor under the screen, and a fingerprint image is obtained after processing.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the foregoing computer-readable storage medium stores a computer program for electronic data exchange, wherein the foregoing computer program enables a computer to execute Part or all of the steps described in any of the three aspects.

In a fifth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute For example, part or all of the steps described in any method of the third aspect. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, the electronic device includes a display screen module and an under-screen fingerprint sensor arranged in the first preset area of the display screen module; the display screen module is provided with a polarizing film; wherein the polarizing film is used for Filter the first light reflected and/or refracted by the wave trough area of the passed finger fingerprint, and retain the second light reflected and/or refracted by the wave peak area of the passed finger fingerprint, wherein the first light is the reflection and/or refracted by the finger fingerprint. Or, among the refracted rays, the angle of incidence with respect to the polarizing film is smaller than the preset angle, and the second rays are the reflected and/or refracted rays of light with the angle of incidence to the polarizing film greater than or equal to the preset angle, finger fingerprints The reflected and/or refracted light is the emitted light from the fingerprint display under the screen and/or the ambient light reflected and/or refracted by the fingerprint of the finger. It can be seen that because the display module filters out the first light reflected and/or refracted by the wave trough area of the finger fingerprint through the polarizing film, only the second light reflected and/or refracted by the wave peak area of the passed finger fingerprint is retained, so that the final collection Only the fingerprint image in the peak area is obtained in the fingerprint image, which avoids the overexposure of the fingerprint image and the inability to recognize the fingerprint. At the same time, it also avoids the difficulty of dry finger fingerprint recognition and the two-dimensional plane fake finger fingerprint recognition, which is beneficial to improve electronic equipment The processing speed rate of fingerprint collection and the reliability of fingerprint recognition.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. 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 creative work.

FIG. 1 is a reference schematic diagram of fingerprint reflection and/or refracting light provided by an embodiment of the present application;

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

2B is a schematic diagram of the coordinates of the screen of an electronic device provided by an embodiment of the present application

3A is a schematic structural diagram of a display screen module provided by an embodiment of the present application;

3B is a schematic structural diagram of another display screen module provided by an embodiment of the present application;

4 is a schematic flowchart of a fingerprint image processing method provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of another fingerprint image processing method provided by an embodiment of the present application;

Fig. 6 is a block diagram of functional units of a fingerprint image processing device provided by an embodiment of the present application.

detailed description

In order to enable those skilled in the art to better understand the solution of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific sequence. In addition, 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 includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

The electronic device involved in the embodiments of this application may be an electronic device with an optical fingerprint sensor. The electronic device can support wired or wireless charging. For example, it can be charged in a dedicated charging box and connected to an electronic device such as a mobile phone. It can support functions such as calls and music. Electronic devices can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal device), etc.

"Fingerprint under the screen" is to place the fingerprint sensor under the display module. In the fingerprint collection process, the light passing through the peak area and trough area of the finger fingerprint is reflected and/or refracted by the fingerprint before passing through the display module. Only then can it reach the under-screen fingerprint sensor. After the under-screen fingerprint sensor collects the fingerprint signal, the fingerprint image is obtained, and the fingerprint authentication is realized through the system comparison, and no external capacitive sensor is needed. During fingerprint collection, the finger is illuminated by the built-in light source and/or the ambient light source, and the light is emitted from the bottom. The angle of the reflected light on the uneven lines of the fingerprint on the surface of the finger and the brightness of the reflected light will be different. The optical fingerprint sensor collects and then forms a multi-gray fingerprint image that can be processed by the fingerprint device algorithm. However, when the light emitted by the built-in light source and/or the ambient light source is reflected and/or returned by the finger fingerprint, the display module can filter the first light reflected and/or refracted by the wave trough area of the finger fingerprint through the polarizing film, and retain For the second light reflected and/or refracted by the wave crest area of the finger fingerprint, please refer to FIG. 1. FIG. 1 is a reflection and/or refracted light of the wave crest area and the wave trough area of the finger fingerprint provided by this embodiment. Referring to the example figure, 100 is the display module, 101 is the light reflected and/or refracted in the fingerprint wave valley area of the finger. The light reflected and/or refracted in the fingerprint wave peak area of the finger is composed of the dashed line 102 and the solid line 103 in FIG. Wherein 103 is the part of the beam with the same size as 101 in the beam, and 102 is the part of the beam in the beam larger than the part of the beam in 101. It can be seen that when the light shines on the finger fingerprint to form reflection and/or refraction, the surface of the fingerprint peak area performs light The speed of light formed by reflection and/or refraction is relatively large, while the light beam formed by reflection and/or refraction of light on the surface of the trough area is relatively small and concentrated near the vertical direction of the display module.

In view of the foregoing problems, the embodiments of the present application are described in detail below.

Please refer to FIG. 2A. FIG. 2A is a schematic structural diagram of an electronic device 200 provided by an embodiment of the present application. The display screen module 100 is applied to the electronic device 200. The electronic device 200 includes a display screen module 100 and is arranged at all. The under-screen fingerprint sensor 300 in the first preset area of the display screen module 100; the display screen module 100 is provided with a polarizing film 104;

The polarizing film 104 is used to filter the first light 101 reflected and/or refracted by the wave trough area of the passing finger fingerprint, and retain the second light 102 reflected and/or refracted by the wave crest area of the passing finger fingerprint. The first light 101 is the reflected and/or refracted light of the fingerprint of the finger whose incident angle with respect to the polarizing film 104 is smaller than a preset angle, and the second light 102 is the reflected and/or reflected light of the fingerprint of the finger. Or, among the refracted rays, the incident angle with respect to the polarizing film 104 is greater than or equal to the preset angle, and the reflected and/or refracted rays of the fingerprint of the finger are the emitted rays and/or environment of the display module Light reflected and/or refracted by the fingerprint of the finger.

Wherein, as shown in the schematic diagram of the coordinates of the screen of the electronic device as shown in FIG. 2B, the origin of the coordinates is at the center of the screen, with the origin of the coordinates as a reference, the positive direction of the screen Z axis is the direction perpendicular to the screen surface and away from the back cover; It is the direction perpendicular to the screen surface and close to the back cover, that is, the direction opposite to the positive direction of the screen Z axis.

Wherein, the under-screen fingerprint sensor is arranged in the space between the display screen module and the back cover. Specifically, it can be arranged on the inner surface of the screen immediately adjacent to the screen, and is reversed along the Z axis of the screen in the first preset area. The first preset area of the display screen module and the fingerprint sensor under the screen are arranged correspondingly. FIG. 2A is a first preset area with a rectangular shape as an example of this application. The first preset area may also be circular or Oval shape, no limitation here.

Among them, the polarizing film (PolarizingFilm) is a transparent film with dichroic properties, which allows light parallel to the transmission axis to pass through, and light perpendicular to this direction is absorbed. This phenomenon is called polarization of light . The passing light is light in the same vibration direction and becomes polarized light. The light reflected and/or refracted by the fingerprint of the finger will be absorbed if it is perpendicular to the transmission axis of the polarizing film. Because the light reflected and/or refracted on the surface of the fingerprint wave trough of the finger, the light beam formed is smaller, and It is concentrated near the vertical direction of the display module, so the polarizing film can be used to absorb the reflected and/or refracted light in the trough area.

Among them, there is a vacuum between the display module and the fingerprint sensor under the screen, so as to ensure that the fingerprint sensor under the screen can collect more accurate signals of the fingerprint peak area.

In a possible example, please refer to FIG. 3A. FIG. 3A is a schematic structural diagram of a display screen module. The under-screen fingerprint module 100 includes a glass panel 105 and an organic light-emitting diode (Organic Light-Emitting Diode, OLED) panel 106. And the polarizing film 104, the polarizing film 104 is provided between the glass panel 105 and the OLED panel 106, and between the glass panel 105 and the polarizing film 104, and the polarizing film 104 and the OLED The panels 106 are all vacuum.

Wherein, the polarizing film is arranged between the glass panel and the OLED panel, the display module can filter out the first light reflected and/or refracted by the wave trough area of the finger fingerprint in advance, and retain the reflection and/or refracted light of the wave peak area of the finger fingerprint passing through. / Or refracted second light.

It can be seen that in this example, because the polarizer only allows the second light rays whose incidence angle with respect to the polarizing film is greater than or equal to the preset angle among the reflected and/or refracted light rays of the finger fingerprint to pass, and the second light rays are Part of the light of the second light is reflected and/or refracted by the wave crest area of the finger fingerprint. Therefore, it is advantageous for the fingerprint sensor to only collect the fingerprint image of the wave crest area of the finger fingerprint to perform fingerprint identification.

In a possible example, the glass panel and the polarizing film are integrated or stacked.

Among them, the integrated arrangement of the glass panel and the polarizing film refers to embedding the polarizing film into the glass panel to form a glass panel with filtering function. The laminated arrangement of the glass panel and the polarizing film means that a layer of polarizer is superimposed on the side of the glass panel close to the OLED panel, and there is a vacuum between the glass panel and the polarizing film.

It can be seen that in this example, the glass panel and the polarizing film are integrated or laminated, which can not only realize the filter function, reduce the fingerprint light, and increase the processing speed of fingerprint collection, but also have various setting methods to reduce the thickness of the screen.

In a possible example, the polarizing film and the OLED panel are integrated or stacked.

Among them, the integrated arrangement of the polarizing film and the OLED panel refers to embedding the polarizing film and the OLED panel to form an OLED panel with a light filtering function. The stacking arrangement of the polarizing film and the OLED panel refers to superimposing a layer of polarizer on the side of the OLED panel close to the glass panel, and there is a vacuum between the OLED panel and the polarizing film.

It can be seen that in this example, the integration or stacking of the polarizing film and the OLED panel can not only achieve the filter function, reduce fingerprint light, and increase the processing speed of fingerprint collection, but also have various setting methods to reduce the thickness of the screen.

In a possible example, please refer to FIG. 3B. FIG. 3B is a schematic structural diagram of a display screen module. The under-screen fingerprint module includes a glass panel 105, an OLED panel 106, and a polarizing film 104. The glass panel 105 The OLED panel 106 is arranged between the polarizing film 104 and the glass panel 105 and the OLED panel 106 and the OLED panel 106 and the polarizing film 104 are all vacuum.

Among them, the OLED panel is arranged between the glass panel and the polarizing film. The polarizing film transmits the second light reflected and/or refracted by the peak area of the finger fingerprint to the fingerprint sensor. The fingerprint sensor can analyze the fingerprint signal to obtain the fingerprint peak The fingerprint image of the area.

In a possible example, the glass panel and the OLED panel are integrated or stacked.

Among them, the integrated arrangement of the glass panel and the OLED panel refers to embedding the glass panel and the OLED panel, and the laminated arrangement of the glass panel and the OLED panel refers to the superposition of a layer of OLED panel on the side of the glass panel close to the polarizing film.

It can be seen that in this example, integrating the glass panel and the OLED panel or stacking it can improve the speed and efficiency of fingerprint collection, and the setting methods can be varied, and the screen thickness can be reduced.

In a possible example, the OLED panel and the polarizing film are integrated or stacked.

Among them, the integrated arrangement of the OLED panel and the polarizing film refers to embedding the OLED panel and the polarizing film to form an OLED panel with polarization function. The OLED panel and polarizing film stacking arrangement refers to superimposing a layer of polarizing film on the side of the OLED panel near the fingerprint sensor under the screen.

It can be seen that in this example, the OLED panel and the polarizing film are integrated or stacked to achieve the filter function, reduce fingerprint light, increase the processing speed of fingerprint collection, and have various setting methods to reduce the thickness of the screen.

Please refer to FIG. 4, which is a schematic flowchart of a fingerprint image processing method provided by an embodiment of the present application, which is applied to the electronic device as shown in FIG. 2A, and the electronic device includes the display screen module and the In the under-screen fingerprint sensor in the first preset area of the display screen module, the display screen module is provided with a polarizing film; the fingerprint image processing method includes:

S401: When the electronic device detects a fingerprint collection instruction, it lights up a second preset area of the display screen module, where the second preset area is a circular display area associated with the first preset area.

Wherein, the second preset area is a circular display area associated with the first preset area, specifically it may be a circular display area outside the first preset area, that is, the second preset area and the first preset area do not overlap Part, it may also be the circular display area inside the first preset area, that is, the first preset area includes the second preset area, and it may also be the circular display area bordering the first preset area, that is, the first preset area. Let the area and the second preset area have a partial sufficient area. By illuminating the ring display area, it is beneficial to increase and strengthen the light reflected and/refraction of the fingerprint of the finger, so as to more accurately collect the fingerprint.

S402. The electronic device activates the under-screen fingerprint sensor, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the wave peak area of the finger fingerprint is reflected and/or The refracted second light is retained by the polarizing film, and the first light is the light whose incident angle with respect to the polarizing film is smaller than a preset angle among the reflected and/or refracted light of the fingerprint of the finger. The light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is greater than or equal to the preset angle, and the reflected and/or refracted light of the finger fingerprint is the display screen The emitted light and/or ambient light of the module is reflected and/or refracted by the finger fingerprint.

S403: The electronic device collects the second light through the under-screen fingerprint sensor, and obtains a fingerprint image after processing.

Among them, when the reflected and/or refracted light from the fingerprint of the finger reaches the fingerprint sensor under the screen after passing through the display module, since the display module includes a polarizing film, only part of the light in the peak area of the finger can pass through the display module. The group reaches the fingerprint sensor under the screen, which collects this light and finally forms a fingerprint image.

Among them, the fingerprint image processing method in the embodiment of the present application can simultaneously use ambient light and/or the built-in light of the screen, and the wave trough area of the finger basically does not form a stimulus signal for the final imaging, and the wave peak area of the finger forms a stimulus for the final image formed. Therefore, the stronger the light, the better the image quality. The ambient light is used first, and the built-in light on the screen is used for assistance, which solves the problem of overexposure caused by strong external light in the optical camera solution. At the same time, it also solves the problem that the imaging difference between the peak area and the valley area of the fingerprint is not obvious and the fingerprint recognition of the two-dimensional fake finger in the case of dry fingers. The two-dimensional fake finger fingerprint cannot collect any fingerprint signals.

In a possible example, the lighting of the second preset area of the display screen module includes: determining the current brightness of the ambient light; and determining the brightness of the second preset area according to the brightness of the ambient light Display brightness; light up the ring display area corresponding to the second preset area according to the display brightness.

Wherein, when the electronic device detects the fingerprint collection instruction, it lights up the second preset area of the display module. The second preset area is the ring display area outside the first preset area, and the ring display area corresponds to the built-in The light emitted by the light source passes through the reflection and/or refraction of the wave crest area and the wave trough area of the finger fingerprint to reach the display screen module, and finally forms the fingerprint image of the wave crest area.

Among them, the reflected and/or refracted light of the fingerprint of the finger can be emitted from the inside of the display module or from the ambient light. Before illuminating the second preset area of the display module, the current ambient light is determined The brightness of the second preset area is determined according to the brightness of the ambient light, so that the second preset area can be illuminated according to the display brightness. For example, the higher the brightness of the ambient light, the lower the display brightness, and the setting can be Is 0 to achieve energy saving.

It can be seen that, in this example, lighting the second preset area of the display screen module can facilitate the collection of fingerprint data, and determine the display brightness of the second preset area according to the brightness of the ambient light, which is beneficial to energy saving.

In a possible example, after the second light is collected by the under-screen fingerprint sensor, the method further includes: turning off the second preset area of the display screen module.

It can be seen that in this example, after the second light is collected by the under-screen fingerprint sensor, the second preset area of the screen can be turned off, and then the fingerprint sensor performs fingerprint recognition according to the collected information, so that the optical fingerprint collection is efficient and energy-saving.

Please refer to FIG. 5. FIG. 5 is a schematic flowchart of a fingerprint image processing method provided by an embodiment of the present application, which is applied to the electronic device as shown in FIG. 2A, and the electronic device includes the display screen module and the The under-screen fingerprint sensor in the first preset area of the display screen module; the display screen module is provided with a polarizing film; as shown in the figure, the fingerprint image processing method includes:

S501: When the electronic device detects a fingerprint collection instruction, it lights up a second preset area of the display screen module, where the second preset area is a circular display area associated with the first preset area.

S502. The electronic device activates the under-screen fingerprint sensor, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the wave peak area of the finger fingerprint is reflected and/or The refracted second light is retained by the polarizing film, and the first light is the light whose incident angle with respect to the polarizing film is smaller than a preset angle among the reflected and/or refracted light of the fingerprint of the finger. The light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is greater than or equal to the preset angle, and the reflected and/or refracted light of the finger fingerprint is the display screen The emitted light and/or ambient light of the module is reflected and/or refracted by the finger fingerprint.

S503: The electronic device collects the second light through the under-screen fingerprint sensor.

S504, the electronic device turns off the screen of the second preset area of the display screen module, and obtains a fingerprint image after processing by the under-screen fingerprint sensor.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of the structure and the execution process on the method side. It can be understood that, in order to implement the above-mentioned functions, the electronic device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments provided herein, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

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

FIG. 6 is a block diagram of functional units of the fingerprint image processing device 600 involved in an embodiment of the present application. The fingerprint image processing device 600 is applied to an electronic device that includes a screen and the under-screen fingerprint module set relative to a preset area of the screen. The fingerprint image processing device 600 includes a processing unit 601 and a communication unit 602; where,

The processing unit 601 is configured to light up a second preset area of the display screen module when a fingerprint collection instruction is detected, where the second preset area is a circle display associated with the first preset area Area; and for activating the under-screen fingerprint sensor, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the wave peak area of the finger fingerprint is reflected and/or refracted The second light ray is retained by the polarizing film, and the first light ray is the light whose incident angle relative to the polarizing film is smaller than a preset angle among the reflected and/or refracted light of the fingerprint of the finger. The reflected and/or refracted light of the finger fingerprint is the light whose incident angle with respect to the polarizing film is greater than or equal to the preset angle, and the reflected and/or refracted light of the finger fingerprint is the mode of the display screen. The group of emitted light and/or ambient light reflected and/or refracted by the finger fingerprint; and used to collect the second light through the under-screen fingerprint sensor, and obtain a fingerprint image after processing.

The fingerprint image processing device 600 further includes a storage unit 603, which is used to store data of the electronic device.

In a possible example, in terms of lighting the second preset area of the display screen module, the processing unit 601 is specifically configured to: determine the current brightness of the ambient light; The light brightness determines the display brightness of the second preset area; and is used to light up the circular display area corresponding to the second preset area according to the display brightness.

In a possible example, after the second light is collected by the under-screen fingerprint sensor, the processing unit 601 is specifically configured to: turn off the second preset area of the display screen module.

The processing unit 601 may be a processor, the communication unit 602 may be an internal communication bus, etc., and the storage unit 603 may be a memory.

An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any method as recorded in the above method embodiment , The aforementioned computer includes electronic equipment.

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

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited by the described sequence of actions. Because according to this application, some steps can be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the above-mentioned embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

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

The units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the above 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 essentially or the part that contributes to the prior art 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, A number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the foregoing methods of the 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 various 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-mentioned embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable memory, and the memory can include: flash disk , Read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disc, etc.

The embodiments of the application are described in detail above, and specific examples are used in this article to illustrate the principles and implementation of the application. The descriptions of the above examples are only used to help understand the methods and core ideas of the application; A person of ordinary skill in the art, based on the idea of the present application, will have changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation of the present application.

Claims

A display screen module, characterized in that it is applied to an electronic device, the electronic device including the display screen module and an under-screen fingerprint sensor arranged in a first preset area of the display screen module; the display The screen module is provided with a polarizing film;

The polarizing film is used to filter the first light reflected and/or refracted by the wave trough area of the passing finger fingerprint, and retain the second light reflected and/or refracted by the wave crest area of the passing finger fingerprint, and the second light is reflected and/or refracted by the fingerprint under the screen. The sensor collects the second light from the display screen module, where the first light is the reflected and/or refracted light of the fingerprint of the finger whose incident angle relative to the polarizing film is less than a preset angle Light, the second light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is greater than or equal to the preset angle, and the reflection and/or refraction of the finger fingerprint The light is the light emitted by the display module and/or the ambient light reflected and/or refracted by the fingerprint of the finger.
The display screen module according to claim 1, wherein the display screen module comprises a glass panel, an OLED panel and a polarizing film, and the polarizing film is arranged between the glass panel and the OLED panel, And between the glass panel and the polarizing film, and between the polarizing film and the OLED panel are vacuum.
The display screen module of claim 2, wherein the glass panel and the polarizing film are integrated or stacked.
The display screen module of claim 2, wherein the polarizing film and the OLED panel are integrated or stacked.
The display screen module according to claim 1, wherein the display screen module comprises a glass panel, an OLED panel and a polarizing film, and the OLED panel is arranged between the glass panel and the polarizing film, And the vacuum is between the glass panel and the OLED panel and between the OLED panel and the polarizing film.
The display screen module of claim 5, wherein the glass panel and the OLED panel are integrated or stacked.
The display screen module of claim 5, wherein the OLED panel and the polarizing film are integrated or stacked.
An electronic device, characterized in that it comprises a display screen module and an under-screen fingerprint sensor arranged in a first predetermined area of the display screen module; the display screen module is provided with a polarizing film;

The polarizing film is used to filter the first light reflected and/or refracted by the wave trough area of the passing finger fingerprint, and retain the second light reflected and/or refracted by the wave crest area of the passing finger fingerprint, wherein the first light The light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is less than a preset angle, and the second light is the reflected and/or refracted light of the finger fingerprint with respect to The incident angle of the polarizing film is greater than or equal to the predetermined angle, and the reflected and/or refracted light of the finger fingerprint is the emitted light of the display module and/or the ambient light reflected by the finger fingerprint And/or refracted light.
The electronic device according to claim 8, wherein there is a vacuum between the display screen module and the under-screen fingerprint sensor.
A fingerprint image processing method, characterized in that it is applied to an electronic device, the electronic device comprising the display screen module and an under-screen fingerprint sensor arranged in a first preset area of the display screen module, the display The screen module is provided with a polarizing film; the method includes:

When a fingerprint collection instruction is detected, light up a second preset area of the display screen module, where the second preset area is a circular display area associated with the first preset area;

The under-screen fingerprint sensor is activated, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the second light reflected and/or refracted by the wave peak area of the finger fingerprint is The polarizing film is retained, the first light is the reflected and/or refracted light of the finger fingerprint whose incident angle with respect to the polarizing film is less than a preset angle, and the second light is the finger fingerprint Among the reflected and/or refracted rays of light with respect to the polarizing film, the incident angle is greater than or equal to the predetermined angle, and the reflected and/or refracted rays of the fingerprint of the finger are the emitted rays of the display module and /Or ambient light reflected and/or refracted by the finger fingerprint;

The second light is collected by the fingerprint sensor under the screen, and a fingerprint image is obtained after processing.
The method according to claim 10, wherein the second preset area is a circular display area outside the first preset area, or the second preset area is connected to the first preset area. The circular display area bordering the inner side of the preset area.
The method according to claim 10, wherein the illuminating the second preset area of the display screen module comprises:

Determine the current ambient light brightness;

Determine the display brightness of the second preset area according to the brightness of the ambient light;

The circular display area corresponding to the second preset area is illuminated according to the display brightness.
The method according to claim 12, wherein the determining the display brightness of the second preset area according to the brightness of the ambient light comprises:

According to the brightness of the ambient light, search for a preset mapping relationship between the brightness of the ambient light and the display brightness, and determine the display brightness of the second preset area.
The method according to claim 10, wherein after the second light is collected by the under-screen fingerprint sensor, the method further comprises:

Turn off the second preset area of the display module.
A fingerprint image processing device, characterized in that it is applied to an electronic device, the electronic device comprising the display screen module and an under-screen fingerprint sensor arranged in a first preset area of the display screen module, the display The screen module is provided with a polarizing film; the fingerprint image processing device includes a processing unit and a communication unit, wherein,

The processing unit is configured to light up a second preset area of the display screen module when a fingerprint collection instruction is detected, where the second preset area is a circle display associated with the first preset area Area; and for activating the under-screen fingerprint sensor, wherein the first light reflected and/or refracted by the wave trough area of the finger fingerprint is filtered by the polarizing film, and the wave peak area of the finger fingerprint is reflected and/or refracted The second light ray is retained by the polarizing film, and the first light ray is the light whose incident angle relative to the polarizing film is smaller than a preset angle among the reflected and/or refracted light of the fingerprint of the finger. The reflected and/or refracted light of the finger fingerprint is the light whose incident angle with respect to the polarizing film is greater than or equal to the preset angle, and the reflected and/or refracted light of the finger fingerprint is the mode of the display screen. The group of emitted light and/or ambient light reflected and/or refracted by the finger fingerprint; and used to collect the second light through the under-screen fingerprint sensor, and obtain a fingerprint image after processing.
The fingerprint image processing device according to claim 15, wherein the second preset area is a circular display area outside the first preset area, or the second preset area is a The circular display area bordering the inner side of the first preset area.
The fingerprint image processing device according to claim 15, wherein, in terms of illuminating the second preset area of the display screen module, the processing unit is specifically configured to: determine the current brightness of the ambient light; And used for determining the display brightness of the second preset area according to the brightness of the ambient light; and used for illuminating the circular display area corresponding to the second preset area according to the display brightness.
The fingerprint image processing device according to claim 17, wherein, in terms of determining the display brightness of the second preset area according to the brightness of the ambient light, the processing unit is specifically configured to: According to the ambient light brightness, the mapping relationship between the preset ambient light brightness and the display brightness is searched, and the display brightness of the second preset area is determined.
The data transmission control device according to claim 15, wherein after the second light is collected by the under-screen fingerprint sensor, the processing unit is specifically configured to: turn off the screen of the display module The second preset area.
A computer-readable storage medium is characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the method according to any one of claims 10-14.