CN109886177B - Display screen module, electronic equipment and fingerprint image processing method - Google Patents
Display screen module, electronic equipment and fingerprint image processing method Download PDFInfo
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- CN109886177B CN109886177B CN201910114630.4A CN201910114630A CN109886177B CN 109886177 B CN109886177 B CN 109886177B CN 201910114630 A CN201910114630 A CN 201910114630A CN 109886177 B CN109886177 B CN 109886177B
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Abstract
The embodiment of the application discloses a display screen module, electronic equipment and a fingerprint image processing method, wherein the electronic equipment comprises the display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by the valley regions of the finger fingerprints and retaining second light rays reflected and/or refracted by the peak regions of the finger fingerprints, wherein the first light rays are light rays with incidence angles smaller than a preset angle relative to the polarizing film in the reflected and/or refracted light rays of the finger fingerprints, and the second light rays are light rays with incidence angles larger than or equal to the preset angle relative to the polarizing film in the reflected and/or refracted light rays of the finger fingerprints. The embodiment of the application is beneficial to improving the processing speed rate of the electronic equipment for collecting the fingerprints and the reliability of fingerprint identification.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a display screen module, electronic equipment and a fingerprint image processing method.
Background
With the continuous development of fingerprint collection technology, electronic equipment such as mobile phones and the like can support the function of identifying fingerprints under a screen at present, most electronic equipment uses an optical camera scheme, the problem of high exposure of imaging under the highlight condition is difficult to solve under the condition of image collection based on the optical camera, when the finger fingerprints of dry fingers are imaged, the peaks and troughs in the imaged fingerprint images are not obvious due to the fact that the difference of finger gully is reduced, meanwhile, a two-dimensional plane fake finger can successfully deceive the camera to shoot the fingerprint images after taking photo deception, and the obtained fingerprint images have safety risks.
Disclosure of Invention
The embodiment of the application provides a display screen module, electronic equipment and a fingerprint image processing method, and aims to improve the processing speed rate of fingerprint collection of the electronic equipment and the reliability of fingerprint identification.
In a first aspect, an embodiment of the present application provides an underscreen fingerprint module, which is applied to an electronic device, where the electronic device includes a display screen module and an underscreen fingerprint sensor disposed in a first preset area of the display screen module; the display screen module is provided with a polarizing film;
the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and retaining second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through, wherein the first light rays are light rays with an incident angle relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with an incident angle relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the display screen module.
In a second aspect, an embodiment of the present application provides an electronic device, including a display screen module and an underscreen fingerprint sensor disposed in a first preset region of the display screen module; the display screen module is provided with a polarizing film;
the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and retaining second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through, wherein the first light rays are light rays with an incident angle relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with an incident angle relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the display screen module.
In a third aspect, an embodiment of the present application provides a fingerprint image processing method, which is applied to an electronic device, where the electronic device includes a display screen module and a sub-screen fingerprint sensor disposed in a first preset area of the display screen module, and the display screen module is disposed with a polarization film; the method comprises the following steps:
when a fingerprint acquisition instruction is detected, lightening a second preset area of the display screen module, wherein the second preset area is a circular ring display area associated with the first preset area;
enabling the under-screen fingerprint sensor, wherein first light rays reflected and/or refracted by the valley regions of the finger fingerprint are filtered by the polarization film, second light rays reflected and/or refracted by the peak regions of the finger fingerprint are retained by the polarization film, the first light rays are light rays of the reflected and/or refracted light rays of the finger fingerprint, the incident angle of which relative to the polarization film is smaller than a preset angle, the second light rays are light rays of the reflected and/or refracted light rays of the finger fingerprint, the incident angle of which relative to the polarization film is larger than or equal to the preset angle, and the reflected and/or refracted light rays of the finger fingerprint are light rays of the display screen module, the emitted light rays and/or the ambient light rays of which are reflected and/or refracted by the finger fingerprint;
and collecting the second light through the fingerprint sensor under the screen, and processing to obtain a fingerprint image.
In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods in the third aspect of the present application.
In a fifth aspect, the present application provides a computer program product, wherein the computer program product comprises a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps as described in any one of the methods of the third aspect of the embodiments of the present application. The computer program product may be a software installation package.
It can be seen that, in the embodiment of the application, the electronic device includes a display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through are reserved, wherein the first light rays are light rays with incidence angles relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with incidence angles relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the finger fingerprint display screen under the screen. It is visible, because the trough area reflection of display screen module has filtered the finger fingerprint through the polarizing film and/or the first light of refraction, only remain the second light of the crest area reflection of finger fingerprint and/or refraction that passes through, make only the fingerprint image of crest area in the fingerprint image that finally gathers, avoided fingerprint image overexposure to lead to the condition that can not discern, the condition of dry finger fingerprint identification difficulty and two-dimensional plane fake finger fingerprint identification has also been avoided simultaneously, be favorable to improving the processing speed rate and the fingerprint identification's of electronic equipment collection fingerprint reliability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fingerprint reflecting and/or refracting light according to an embodiment of the present application;
fig. 2A is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2B is a schematic coordinate diagram of a screen of an electronic device according to an embodiment of the present disclosure
Fig. 3A is a schematic structural diagram of a display screen module according to an embodiment of the present disclosure;
fig. 3B is a schematic structural diagram of another display screen module according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of a fingerprint image processing method according to an embodiment of the present application;
FIG. 5 is a schematic flowchart of another fingerprint image processing method provided in the embodiments of the present application;
fig. 6 is a block diagram of functional units of a fingerprint image processing device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
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 application. The appearances of the 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The electronic device according to the embodiment of the present application may be an electronic device with an optical fingerprint sensor, the electronic device may support wired or wireless charging, for example, the electronic device may be placed in a dedicated charging box for charging, and after being connected to an electronic device such as a Mobile phone, the electronic device may support functions such as conversation and music, and the electronic device may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, and various forms of User Equipment (UE), a Mobile Station (MS), a terminal device (terminal device), and the like.
The fingerprint sensor is placed under the display screen module to fingerprint "fingerprint sensor under the screen" exactly, and after fingerprint reflection and/or refraction are pointed to light through finger fingerprint crest area and trough area at the fingerprint collection in-process, will just can reach fingerprint sensor under the screen after passing through the display screen module earlier, obtains the fingerprint image after fingerprint signal is gathered to fingerprint sensor under the screen, thereby compares through the system and realizes the fingerprint authentication, no longer needs external capacitive sensor. When the fingerprint is collected, the light is emitted from the bottom under the irradiation of the built-in light source and/or the environment light source, and the refraction angle of the emitted light on the uneven lines of the fingerprint on the surface of the finger and the brightness of the reflected light are different. And after the optical fingerprint sensor collects the image, a multi-gray-scale fingerprint image which can be processed by a fingerprint device algorithm is formed. However, when the light emitted from the internal light source and/or the ambient light source is reflected and/or returned by the fingerprint, the display screen module can filter the first light reflected and/or refracted by the trough region of the fingerprint passing through by the polarizer film, and retain the second light reflected and/or refracted by the crest region of the fingerprint passing through, referring to fig. 1, fig. 1 is a reference example diagram of the reflected and/or refracted light of the crest region and the trough region of the fingerprint provided by this embodiment, 100 is the display screen module, 101 is the light reflected and/or refracted by the trough region of the fingerprint, and the light reflected and/or refracted by the crest region of the fingerprint is composed of a dashed line portion 102 and a solid line portion 103 in fig. 1, wherein 103 is the light having the same size of the light beam portion as 101 in the light beam, 102 is the light greater than the light beam portion in 101 in the light beam, it is thus clear that, when light shines and forms reflection and/or refraction on the finger fingerprint, the light velocity that reflection and/or refraction that light formed is carried out on fingerprint crest regional surface is great, and the light beam that reflection and/or refraction that carries out light on trough regional surface formed is less to concentrate on near display screen module vertical direction.
In view of the above problems, embodiments of the present application will be described in detail below.
Referring to fig. 2A, fig. 2A is a schematic structural diagram of an electronic device 200 according to an embodiment of the present disclosure, in which the display screen module 100 is applied to the electronic device 200, the electronic device 200 includes a display screen module 100 and an underscreen fingerprint sensor 300 disposed in a first preset area of the display screen module 100; the display screen module 100 is provided with a polarizing film 104;
the polarizer film 104 is used for filtering a first light ray 101 reflected and/or refracted by a valley region of a finger fingerprint passing through, and retaining a second light ray 102 reflected and/or refracted by a peak region of the finger fingerprint passing through, wherein the first light ray 101 is a light ray of the reflected and/or refracted light ray of the finger fingerprint, the incident angle of which relative to the polarizer film 104 is smaller than a preset angle, the second light ray 102 is a light ray of the reflected and/or refracted light ray of the finger fingerprint, the incident angle of which relative to the polarizer film 104 is greater than or equal to the preset angle, and the reflected and/or refracted light ray of the finger fingerprint is a light ray of the emitted light ray and/or the ambient light ray of the display screen module reflected and/or refracted by the finger fingerprint.
As shown in fig. 2B, the coordinate of the screen of the electronic device is schematically represented, where the origin of coordinates is at the center of the screen, the origin of coordinates is used as a reference, and the positive direction of the Z-axis of the screen is a direction perpendicular to the surface of the screen and away from the rear cover; the screen Z-axis direction is a direction perpendicular to the screen surface and close to the back cover, i.e., a direction opposite to the screen Z-axis direction.
The fingerprint sensor under the screen is arranged in a space between the display screen module and the rear cover, can be specifically arranged on the inner side surface of the adjacent screen, and is opposite to the Z axis of the screen in a first preset area. The first preset area of the display screen module and the fingerprint sensor under the screen are correspondingly arranged, fig. 2A shows that the first preset area is rectangular in shape, and the first preset area can also be circular or oval, which is not limited herein.
Wherein the polarizing film (PolarizingFilm) is a transparent film having dichroism, which allows light parallel to the transmission axis to pass through, and light perpendicular to this direction to be absorbed, which is called polarization of light. The light passing through is light in the same vibration direction and becomes polarized light. The light reflected and/or refracted by the finger fingerprint is absorbed if being vertical to the transmission axis of the polarizing film, and because the formed light beam is smaller when the light is reflected and/or refracted on the surface of the valley position of the finger fingerprint and is concentrated near the vertical direction of the display screen module, the polarizing film can be used for absorbing the reflected and/or refracted light of the valley area.
Wherein, be the vacuum under display screen module and the screen between the fingerprint sensor to guarantee that the fingerprint sensor can gather more accurate fingerprint crest regional signal under the screen.
It can be seen that, in the embodiment of the application, the electronic device includes a display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through are reserved, wherein the first light rays are light rays with incidence angles relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with incidence angles relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the finger fingerprint display screen under the screen. It is visible, because the trough area reflection of display screen module has filtered the finger fingerprint through the polarizing film and/or the first light of refraction, only remain the second light of the crest area reflection of finger fingerprint and/or refraction that passes through, make only the fingerprint image of crest area in the fingerprint image that finally gathers, avoided fingerprint image overexposure to lead to the condition that can not discern, the condition of dry finger fingerprint identification difficulty and two-dimensional plane fake finger fingerprint identification has also been avoided simultaneously, be favorable to improving the processing speed rate and the fingerprint identification's of electronic equipment collection fingerprint reliability.
In one possible example, referring to fig. 3A, fig. 3A is a schematic structural diagram of a display screen module, where the underscreen fingerprint module 100 includes a glass panel 105, an organic light-emitting diode (OLED) panel 106, and a polarizing film 104, the polarizing film 104 is disposed between the glass panel 105 and the OLED panel 106, and a vacuum is formed between the glass panel 105 and the polarizing film 104 and between the polarizing film 104 and the OLED panel 106.
Wherein, set up the polarizing film between glass panels and OLED panel, the display screen module can filter the trough area reflection of finger fingerprint and/or the first light of refraction in advance, remains the passing through the crest area reflection of finger fingerprint and/or the second light of refraction.
Therefore, in this example, since the polarizer only allows the second light ray, which has an incident angle greater than or equal to the preset angle with respect to the polarizing film, of the reflected and/or refracted light ray of the finger fingerprint to pass through, and the second light ray is a partial light ray of the second light ray reflected and/or refracted by the peak area of the finger fingerprint, it is beneficial for the fingerprint sensor to collect only the fingerprint image of the peak area of the finger fingerprint, thereby performing fingerprint identification.
In one possible example, the glass panel and the polarizing film are integrally disposed, or stacked.
The integrated arrangement of the glass panel and the polarizing film means that the polarizing film is embedded into the glass panel to form the glass panel with the light filtering function. The glass panel and the polarizing film are arranged in a laminated mode, namely a layer of polarizer is superposed on the side edge, close to the OLED panel, of the glass panel, and a vacuum is formed between the glass panel and the polarizing film.
Therefore, in the example, the glass panel and the polarizing film are integrally arranged or arranged in a laminated manner, so that the light filtering function can be realized, the fingerprint light is reduced, the processing speed of fingerprint collection is improved, the arrangement method is diversified, and the screen thickness can be reduced.
In one possible example, the polarizing film and the OLED panel are integrally disposed, or stacked.
The polarized film and the OLED panel are integrally arranged, namely the polarized film is embedded with the OLED panel to form the OLED panel with the light filtering function. The polarized film and the OLED panel are arranged in a laminated mode, namely a polarizer is superposed on the side edge, close to the glass panel, of the OLED panel, and a vacuum is formed between the OLED panel and the polarized film.
Therefore, in the present example, the polarizing film and the OLED panel are integrally disposed or stacked, so that not only the filtering function can be realized, the fingerprint light can be reduced, and the processing speed of fingerprint collection can be increased, but also the setting method is diversified, and the screen thickness can be reduced.
In one possible example, please refer to fig. 3B, fig. 3B is a schematic structural diagram of a display screen module, the underscreen fingerprint module includes a glass panel 105, an OLED panel 106, and a polarizing film 104, the OLED panel 106 is disposed between the glass panel 105 and the polarizing film 104, and a vacuum is respectively disposed between the glass panel 105 and the OLED panel 106 and between the OLED panel 106 and the polarizing film 104.
Wherein, set up the OLED panel between glass panels and polarizing film, polarizing film conveys the second light of the regional reflection of peak of the finger fingerprint and/or refraction for fingerprint sensor, and fingerprint sensor can carry out the fingerprint image that obtains finger fingerprint peak region after the analysis to fingerprint signal.
Therefore, in this example, since the polarizer only allows the second light ray, which has an incident angle greater than or equal to the preset angle with respect to the polarizing film, of the reflected and/or refracted light ray of the finger fingerprint to pass through, and the second light ray is a partial light ray of the second light ray reflected and/or refracted by the peak area of the finger fingerprint, it is beneficial for the fingerprint sensor to collect only the fingerprint image of the peak area of the finger fingerprint, thereby performing fingerprint identification.
In one possible example, the glass panel and the OLED panel are integrally disposed, or stacked.
The glass panel and the OLED panel are integrally arranged, namely the glass panel and the OLED panel are embedded, and the glass panel and the OLED panel are arranged in a laminated mode, namely a layer of OLED panel is superposed on the side edge, close to the polarizing film, of the glass panel.
Therefore, in the example, the speed and the efficiency of fingerprint collection can be improved by integrally arranging the glass panel and the OLED panel or arranging the glass panel and the OLED panel in a laminated manner, the arrangement method is diversified, and the thickness of a screen can be reduced.
In one possible example, the OLED panel and the polarizing film are integrally disposed, or stacked.
The OLED panel and the polarizing film are integrally arranged, namely the OLED panel and the polarizing film are embedded to form the OLED panel with the polarizing function. The OLED panel and the polarizing film are arranged in a laminated mode, namely a layer of polarizing film is superposed on the side edge, close to the underscreen fingerprint sensor, of the OLED panel.
Therefore, in this example, the OLED panel and the polarizing film are integrally disposed or stacked to achieve a light filtering function, reduce the light of the fingerprint, and improve the processing speed of fingerprint collection.
Referring to fig. 4, fig. 4 is a schematic flowchart of a fingerprint image processing method provided in the present embodiment, and is applied to the electronic device shown in fig. 2A, where the electronic device includes the display screen module and a sub-screen fingerprint sensor disposed in a first preset area of the display screen module, and the display screen module is disposed with a polarization film; the fingerprint image processing method comprises the following steps:
s401, when the electronic equipment detects a fingerprint acquisition instruction, a second preset area of the display screen module is lightened, and the second preset area is a circular ring display area associated with the first preset area.
The second preset area is an annular display area associated with the first preset area, and specifically may be an annular display area outside the first preset area, that is, a portion where the second preset area and the first preset area are not overlapped, or an annular display area inside the first preset area, that is, the first preset area includes the second preset area, or an annular display area bordering on the first preset area, that is, the first preset area and the second preset area have partial sufficient areas. By illuminating the annular display area, it is advantageous to collect the fingerprint more accurately by adding and enhancing the light reflected and/or refracted by the finger fingerprint.
S402, the electronic device enables the under-screen fingerprint sensor, wherein first light rays reflected and/or refracted by a valley region of the finger fingerprint are filtered by the polarization film, second light rays reflected and/or refracted by a peak region of the finger fingerprint are retained by the polarization film, the first light rays are light rays with an incident angle smaller than a preset angle relative to the polarization film in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with an incident angle larger than or equal to the preset angle relative to the polarization film in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays of the emitted light rays and/or ambient light rays of the display screen module reflected and/or refracted by the finger fingerprint.
And S403, the electronic equipment acquires the second light through the under-screen fingerprint sensor, and a fingerprint image is obtained after processing.
Wherein, the reflection of finger fingerprint and/or the in-process of refracting light reachs the fingerprint sensor under the screen after passing through the display screen module, because including the polarizing film in the display screen module for only partial light in finger crest region can reach the fingerprint sensor under the screen through the display screen module, and fingerprint sensor gathers this light and finally forms fingerprint image under the screen.
The fingerprint image processing method in the embodiment of the application can utilize ambient light and/or screen built-in light at the same time, the wave trough area of the finger basically does not form a stimulation signal for final imaging, and the wave crest area of the finger forms a stimulation signal for the finally formed image, so that the stronger the light is, the better the imaging quality is, the ambient light is preferentially used, the screen built-in light is used for assistance, and the problem of overexposure caused by the strong ambient light in the optical camera scheme is solved. Meanwhile, the problems that imaging distinguishing of a fingerprint peak area and a fingerprint valley area is not obvious under the condition of finger dryness and two-dimensional fake finger fingerprint identification are solved, and any fingerprint signal cannot be acquired by the two-dimensional fake finger fingerprint.
It can be seen that, in the embodiment of the application, the electronic device includes a display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through are reserved, wherein the first light rays are light rays with incidence angles relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with incidence angles relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the finger fingerprint display screen under the screen. It is visible, because the trough area reflection of display screen module has filtered the finger fingerprint through the polarizing film and/or the first light of refraction, only remain the second light of the crest area reflection of finger fingerprint and/or refraction that passes through, make only the fingerprint image of crest area in the fingerprint image that finally gathers, avoided fingerprint image overexposure to lead to the condition that can not discern, the condition of dry finger fingerprint identification difficulty and two-dimensional plane fake finger fingerprint identification has also been avoided simultaneously, be favorable to improving the processing speed rate and the fingerprint identification's of electronic equipment collection fingerprint reliability.
In one possible example, the lighting the second preset area of the display screen module includes: determining the current ambient light brightness; determining the display brightness of the second preset area according to the ambient light brightness; and lightening the circular ring display area corresponding to the second preset area according to the display brightness.
The electronic equipment is used for lighting a second preset area of the display screen module when detecting a fingerprint acquisition instruction, the second preset area is a circular ring display area outside the first preset area, and light rays emitted by a built-in light source corresponding to the circular ring display area reach the display screen module after being reflected and/or refracted by a peak area and a trough area of a finger fingerprint to finally form a fingerprint image of the peak area.
Wherein, reflection and/or refraction light of finger fingerprint can be sent by the display screen module is inside, also can come from the ambient light, before the second of lighting up the display screen module predetermines the region, confirm the luminance of current ambient light earlier, confirm the second according to the luminance of ambient light and predetermine the regional display brightness that corresponds of second, thereby can light the second according to display brightness and predetermine the region, for example, ambient light luminance is higher, display brightness can be lower more, the setting can be 0, thereby realize energy-conservation.
It is thus clear that, in this example, the second of lighting the display screen module is predetermine the region, can be favorable to gathering fingerprint data, predetermines regional display brightness according to ambient light luminance determination second, is favorable to energy-conservation.
In one possible example, after the second light is collected by the underscreen fingerprint sensor, the method further includes: and turning off the second preset area of the display screen module.
Therefore, in the example, after the fingerprint sensor under the screen collects the second light, the second preset area of the screen can be extinguished, and then the fingerprint sensor carries out fingerprint identification according to the collected information, so that the collection of the optical fingerprint is efficient and energy-saving.
Referring to fig. 5, fig. 5 is a schematic flowchart of a fingerprint image processing method according to an embodiment of the present application, and is applied to the electronic device shown in fig. 2A, where the electronic device includes the display screen module and an underscreen fingerprint sensor disposed in a 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 comprises the following steps:
s501, when the electronic equipment detects a fingerprint acquisition instruction, a second preset area of the display screen module is lightened, and the second preset area is a circular ring display area associated with the first preset area.
S502, the electronic device activates the under-screen fingerprint sensor, wherein a first light reflected and/or refracted by the valley region of the finger fingerprint is filtered by the polarizer film, a second light reflected and/or refracted by the peak region of the finger fingerprint is retained by the polarizer film, the first light is a light of which the incident angle relative to the polarizer film is smaller than a preset angle among the reflected and/or refracted light of the finger fingerprint, the second light is a light of which the incident angle relative to the polarizer film is greater than or equal to the preset angle among the reflected and/or refracted light of the finger fingerprint, and the reflected and/or refracted light of the finger fingerprint is a light of which the emitted light and/or the ambient light of the display screen module is reflected and/or refracted by the finger fingerprint.
S503, the electronic equipment collects the second light through the fingerprint sensor under the screen.
S504, the electronic equipment turns off the screen, a second preset area of the display screen module is processed by the fingerprint sensor under the screen, and then a fingerprint image is obtained.
It can be seen that, in the embodiment of the application, the electronic device includes a display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through are reserved, wherein the first light rays are light rays with incidence angles relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with incidence angles relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the finger fingerprint display screen under the screen. It is visible, because the trough area reflection of display screen module has filtered the finger fingerprint through the polarizing film and/or the first light of refraction, only remain the second light of the crest area reflection of finger fingerprint and/or refraction that passes through, make only the fingerprint image of crest area in the fingerprint image that finally gathers, avoided fingerprint image overexposure to lead to the condition that can not discern, the condition of dry finger fingerprint identification difficulty and two-dimensional plane fake finger fingerprint identification has also been avoided simultaneously, be favorable to improving the processing speed rate and the fingerprint identification's of electronic equipment collection fingerprint reliability.
The above description has introduced aspects of embodiments of the present application primarily from a structural and methodological implementation perspective. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 6 is a block diagram of functional units of a fingerprint image processing apparatus 600 according to an embodiment of the present application. The fingerprint image processing device 600 is applied to an electronic device, the electronic device comprises a screen and the under-screen fingerprint module set corresponding to a preset area of the screen, and the fingerprint image processing device 600 comprises a processing unit 601 and a communication unit 602; wherein the content of the first and second substances,
the processing unit 601 is configured to light a second preset area of the display screen module when a fingerprint acquisition instruction is detected, where the second preset area is a circular ring display area associated with the first preset area; and the polarizing film is used for filtering first light rays reflected and/or refracted by the valley regions of the finger fingerprint, second light rays reflected and/or refracted by the peak regions of the finger fingerprint are retained by the polarizing film, the first light rays are light rays with an incident angle smaller than a preset angle relative to the polarizing film in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with an incident angle larger than or equal to the preset angle relative to the polarizing film in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the display screen module; and the fingerprint sensor is used for collecting the second light through the fingerprint sensor under the screen and obtaining a fingerprint image after processing.
The fingerprint image processing apparatus 600 further includes a storage unit 603, which is used for storing data of an electronic device.
It can be seen that, in the embodiment of the application, the electronic device includes a display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film; the polarizing film is used for filtering first light rays reflected and/or refracted by a valley area of a finger fingerprint passing through, and second light rays reflected and/or refracted by a peak area of the finger fingerprint passing through are reserved, wherein the first light rays are light rays with incidence angles relative to the polarizing film smaller than a preset angle in the reflected and/or refracted light rays of the finger fingerprint, the second light rays are light rays with incidence angles relative to the polarizing film larger than or equal to the preset angle in the reflected and/or refracted light rays of the finger fingerprint, and the reflected and/or refracted light rays of the finger fingerprint are light rays reflected and/or refracted by the finger fingerprint of the emitted light rays and/or the ambient light rays of the finger fingerprint display screen under the screen. It is visible, because the trough area reflection of display screen module has filtered the finger fingerprint through the polarizing film and/or the first light of refraction, only remain the second light of the crest area reflection of finger fingerprint and/or refraction that passes through, make only the fingerprint image of crest area in the fingerprint image that finally gathers, avoided fingerprint image overexposure to lead to the condition that can not discern, the condition of dry finger fingerprint identification difficulty and two-dimensional plane fake finger fingerprint identification has also been avoided simultaneously, be favorable to improving the processing speed rate and the fingerprint identification's of electronic equipment collection fingerprint reliability.
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: determining the current ambient light brightness; the display brightness of the second preset area is determined according to the ambient light brightness; and the circular ring display area corresponding to the second preset area is lightened according to the display brightness.
In a possible example, after the second light is collected by the fingerprint sensor under the screen, the processing unit 601 is specifically configured to: and turning off the second preset area of the display screen module.
Wherein the processing unit 601 may be a processor, the communication unit 602 may be an internal communication bus or the like, and the storage unit 603 may be a memory.
Embodiments of the present application also provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes an electronic device.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. A display screen module is characterized by being applied to electronic equipment, wherein the electronic equipment comprises the display screen module and an underscreen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film;
the polarizing film is used for filtering first light reflected and/or refracted by a valley region of a finger fingerprint passing through, retaining second light reflected and/or refracted by a peak region of the finger fingerprint passing through, and collecting the second light from the display screen module by the under-screen fingerprint sensor, wherein the first light is light of which the incident angle relative to the polarizing film is smaller than a preset angle in the reflected and/or refracted light of the finger fingerprint, 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, and the reflected and/or refracted light of the finger fingerprint is light of which the emitted light and/or ambient light of the display screen module is reflected and/or refracted by the finger fingerprint, the display screen module comprises a glass panel, an OLED panel and a polarizing film, wherein the polarizing film is arranged between the glass panel and the OLED panel or the OLED panel is arranged between the glass panel and the polarizing film, and a vacuum is formed between two adjacent glass panels, the OLED panel and the polarizing film.
2. The display screen module of claim 1, wherein the polarizing film is disposed between the glass panel and the OLED panel, and a vacuum is provided between the glass panel and the polarizing film and between the polarizing film and the OLED panel.
3. The display screen module of claim 2, wherein the glass panel and the polarizing film are integrally disposed or stacked.
4. The display screen module of claim 2, wherein the polarizing film and the OLED panel are integrally disposed or stacked.
5. The display screen module of claim 1, wherein the OLED panel is disposed between the glass panel and the polarizing film, and a vacuum is provided between the glass panel and the OLED panel and between the OLED panel and the polarizing film.
6. The display screen module of claim 5, wherein the glass panel and the OLED panel are integrally disposed or stacked.
7. The display screen module of claim 5, wherein the OLED panel and the polarizer film are integrally disposed or stacked.
8. An electronic device is characterized by comprising a display screen module and an under-screen fingerprint sensor arranged in a first preset area of the display screen module; the display screen module is provided with a polarizing film;
the polarizing film is used for filtering first light reflected and/or refracted by a valley region of a finger fingerprint passing through, and retaining second light reflected and/or refracted by a peak region of the finger fingerprint passing through, wherein the first light is one of the reflected and/or refracted light of the finger fingerprint, the incident angle of which relative to the polarizing film is smaller than a preset angle, the second light is one of the reflected and/or refracted light of the finger fingerprint, the incident angle of which relative to the polarizing film is greater than or equal to the preset angle, the reflected and/or refracted light of the finger fingerprint is one of the emitted light and/or ambient light of the display screen module reflected and/or refracted by the finger fingerprint, 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, or the glass panel and the OLED panel are arranged between the glass panel and the OLED panel The OLED panel is arranged between the polarizing films, and vacuum is formed between adjacent two of the glass panel, the OLED panel and the polarizing films.
9. The electronic device of claim 8, wherein a vacuum is provided between the display screen module and the underscreen fingerprint sensor.
10. The fingerprint image processing method is characterized by being applied to electronic equipment, wherein the electronic equipment comprises a display screen module and a fingerprint sensor arranged below a screen in a first preset area of the display screen module, the display screen module is provided with a polarizing film, the display screen module comprises a glass panel, an OLED panel and the polarizing film, the polarizing film is arranged between the glass panel and the OLED panel or the OLED panel is arranged between the glass panel and the polarizing film, and vacuum is formed between two adjacent glass panels, the OLED panel and the polarizing film; the method comprises the following steps:
when a fingerprint acquisition instruction is detected, lightening a second preset area of the display screen module, wherein the second preset area is a circular ring display area associated with the first preset area;
enabling the under-screen fingerprint sensor, wherein first light rays reflected and/or refracted by a valley region of a finger fingerprint are filtered by the polarizing film, second light rays reflected and/or refracted by a peak region of the finger fingerprint are retained by the polarizing film, the first light rays are light rays of the reflected and/or refracted light rays of the finger fingerprint, the incident angle of which relative to the polarizing film is smaller than a preset angle, the second light rays are light rays of the reflected and/or refracted light rays of the finger fingerprint, the incident angle of which relative to the polarizing film is greater than or equal to the preset angle, and the reflected and/or refracted light rays of the finger fingerprint are light rays of the emitted light rays and/or ambient light rays of the display screen module reflected and/or refracted by the finger fingerprint;
and collecting the second light through the fingerprint sensor under the screen, and processing to obtain a fingerprint image.
11. The method according to claim 10, wherein the illuminating a second predetermined area of the display screen module comprises:
determining the current ambient light brightness;
determining the display brightness of the second preset area according to the ambient light brightness;
and lightening the circular ring display area corresponding to the second preset area according to the display brightness.
12. The method of claim 10, wherein after the collecting of the second light by the underscreen fingerprint sensor, the method further comprises:
and turning off the second preset area of the display screen module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910114630.4A CN109886177B (en) | 2019-02-14 | 2019-02-14 | Display screen module, electronic equipment and fingerprint image processing method |
| PCT/CN2020/075437 WO2020164625A1 (en) | 2019-02-14 | 2020-02-14 | Display screen module, electronic device, and fingerprint image processing method |
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| CN201910114630.4A CN109886177B (en) | 2019-02-14 | 2019-02-14 | Display screen module, electronic equipment and fingerprint image processing method |
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| CN109886177B true CN109886177B (en) | 2021-08-24 |
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| CN109886177B (en) * | 2019-02-14 | 2021-08-24 | Oppo广东移动通信有限公司 | Display screen module, electronic equipment and fingerprint image processing method |
| CN110287852A (en) * | 2019-06-20 | 2019-09-27 | Oppo广东移动通信有限公司 | Finger prints processing method and electronic equipment |
| CN110398748B (en) * | 2019-07-19 | 2022-05-31 | Oppo广东移动通信有限公司 | Distance measuring device, equipment and method |
| US11176348B2 (en) | 2019-08-06 | 2021-11-16 | Shenzhen GOODIX Technology Co., Ltd. | Optical fingerprint apparatus and electronic device |
| WO2021022488A1 (en) * | 2019-08-06 | 2021-02-11 | 深圳市汇顶科技股份有限公司 | Fingerprint detection apparatus and electronic device |
| CN110532972B (en) * | 2019-09-02 | 2022-05-17 | Oppo广东移动通信有限公司 | Electronic device and fingerprint image acquisition method |
| CN111095288B (en) * | 2019-12-02 | 2023-09-05 | 深圳市汇顶科技股份有限公司 | Under-screen optical fingerprint identification device and system and liquid crystal display screen |
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| CN109886177B (en) * | 2019-02-14 | 2021-08-24 | Oppo广东移动通信有限公司 | Display screen module, electronic equipment and fingerprint image processing method |
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| WO2020164625A1 (en) | 2020-08-20 |
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