CN109376668B - Fingerprint module, electronic equipment and fingerprint acquisition method - Google Patents
Fingerprint module, electronic equipment and fingerprint acquisition method Download PDFInfo
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- CN109376668B CN109376668B CN201811280520.7A CN201811280520A CN109376668B CN 109376668 B CN109376668 B CN 109376668B CN 201811280520 A CN201811280520 A CN 201811280520A CN 109376668 B CN109376668 B CN 109376668B
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- 238000000034 method Methods 0.000 title claims description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 38
- 230000010287 polarization Effects 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 8
- 239000006059 cover glass Substances 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 239000005357 flat glass Substances 0.000 claims 4
- 238000004590 computer program Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The application discloses a fingerprint module, which is applied to electronic equipment comprising a screen and a fingerprint module, wherein the fingerprint module is arranged below a preset area of the screen, the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent; the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays reflected by the screen from light rays emitted by the screen in a first direction; the second polaroid is used for filtering second light rays, and the second light rays are light rays emitted by the screen in a second direction. The embodiment of the application also provides electronic equipment and a fingerprint acquisition image. By adopting the embodiment of the application, the optical noise can be filtered so as to improve the quality of the acquired fingerprint image.
Description
Technical Field
The application relates to the technical field of electronics, in particular to a fingerprint module, electronic equipment and a fingerprint acquisition method.
Background
The under-screen fingerprint acquisition principle is that the light emitted by the screen is utilized to irradiate the finger placed on the screen, the light emitted by the screen is reflected when reaching the finger, the optical fingerprint module arranged below the screen receives the reflected light signal, and the light absorption amplitude is different due to uneven patterns of the fingerprint, so that the fingerprint image with different brightness is obtained. At present, the quality of the collected fingerprint image is affected by some optical noise of the optical fingerprint module.
Disclosure of Invention
The embodiment of the application provides a fingerprint module, electronic equipment and fingerprint collection method for filter optical noise, in order to promote the quality of the fingerprint image that gathers.
In a first aspect, an embodiment of the present application provides a fingerprint module, which is applied to an electronic device, where the electronic device includes a screen and the fingerprint module, the fingerprint module is disposed below a preset area of the screen, the screen is provided with a first polarizer, the fingerprint module includes a collimating lens and an optical fingerprint sensor, the collimating lens is disposed on a side of the optical fingerprint sensor, which is close to the screen, the collimating lens is provided with a second polarizer, and polarization directions of the first polarizer and the second polarizer are consistent;
the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays, emitted by the screen in a first direction, reflected by the screen;
the second polarizer is used for filtering second light rays, the second light rays are light rays emitted by the screen in a second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment.
In a second aspect, an embodiment of the present application provides an electronic device, including a screen and a fingerprint module, where the fingerprint module is disposed below a preset area of the screen; the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent;
the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays, emitted by the screen in a first direction, reflected by the screen;
the second polarizer is used for filtering second light rays, the second light rays are light rays emitted by the screen in a second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment.
In a third aspect, an embodiment of the present application provides a fingerprint collection method, which is applied to an electronic device, where the electronic device includes a screen and a fingerprint module, the fingerprint module is disposed below a preset area of the screen, the screen is provided with a first polarizer, the fingerprint module includes a collimating lens and an optical fingerprint sensor, the collimating lens is disposed on a side of the optical fingerprint sensor, which is close to the screen, the collimating lens is provided with a second polarizer, and polarization directions of the first polarizer and the second polarizer are consistent; the method comprises the following steps:
when a fingerprint acquisition instruction is detected, the screen is lightened, the fingerprint module is started, first light rays emitted by the screen in a first direction are filtered by the first polaroid and the second polaroid after being reflected by the screen, second light rays emitted by the screen in a second direction are filtered by the second polaroid, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment;
and collecting third light rays through the fingerprint module, and obtaining a fingerprint image after processing, wherein the third light rays are light rays reflected by the user fingerprint by the light rays emitted by the screen to the first direction.
In a fourth aspect, embodiments of the present application provide a mobile terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, the programs including instructions for performing steps in the method according to the third aspect of the embodiments of the present application.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program causes a computer to perform some or all of the steps described in the method according to the third aspect of embodiments of the present application.
In a sixth aspect, embodiments of the present application provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps described in the method according to the third aspect of embodiments of the present application. The computer program product may be a software installation package.
It can be seen that in this application embodiment, the optical noise that influences fingerprint module has first light and second light generally, first light is the light that the screen was to the light of first direction transmission through the screen reflection, the second light is the light that the screen was to the second direction transmission, first direction and second direction are all perpendicular to the screen, the outside of the directional electronic equipment of first direction, the inside of the directional electronic equipment of second direction, the first light of first polaroid that is equipped with on the screen and the second polaroid that is equipped with on the collimating lens are filtered, filter the second light through the second polaroid, so that fingerprint module receives the influence of above-mentioned two kinds of optical noise when gathering the fingerprint and reduces, and then promote the quality of the fingerprint image that gathers.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a fingerprint module provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of three collimating lenses according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a fingerprint collection method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a fingerprint acquisition device according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
The following will describe in detail.
The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may 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 may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The electronic device may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), terminal devices (terminal devices), etc.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of a fingerprint module provided in an embodiment of the present application. The fingerprint module is applied to electronic equipment, the electronic equipment comprises a screen and the fingerprint module, the fingerprint module is arranged below a preset area of the screen, the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent;
the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays, emitted by the screen in a first direction, reflected by the screen;
the second polarizer is used for filtering second light rays, the second light rays are light rays emitted by the screen in a second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment.
The first direction is perpendicular to the screen and points to the outside of the electronic device, i.e. the first direction is the upward direction of the perpendicular screen, and the second direction is perpendicular to the screen and points to the inside of the electronic device, i.e. the second direction is the downward direction of the perpendicular screen, based on fig. 1.
The preset area may be a part of the screen or may be the whole screen, which is not limited herein. In the case where the preset area is a part of the screen, the position where the preset area is located may be the middle of the screen, the upper left corner of the screen, the upper right corner of the screen, the lower left corner of the screen, or the like, which is not limited herein. In the case where the predetermined area is a portion of a screen, the predetermined area may be 5mm by 5mm, 8mm by 8mm, 1cm by 1cm, or other values. In the case where the preset area is a part of the screen, the shape of the preset area may be square, rectangle, oval, polygon, or the like, which is not limited herein.
The first polaroid is arranged above the display layer of the screen, and the polaroid is used for reducing external light reflection. The screen includes cover glass, display screen and touch screen, then first polaroid is in the top of display screen.
The first light is light reflected by the upper surface of the screen (namely, the outer glass of the screen, namely, the cover glass) of the screen, wherein the light emitted by the screen in the first direction.
Among them, a Polarizer (Polarizer) is called a Polarizer, and controls the polarization direction of a specific light beam. When natural light passes through the polaroid, light with the vibration direction perpendicular to the transmission axis of the polaroid is absorbed, and only polarized light with the vibration direction parallel to the transmission axis of the polaroid remains in the transmitted light.
It can be seen that, in this embodiment of the present application, the second light is light emitted vertically downward by the screen, after the second light passes through the second polarizer, only the light having the same polarization direction as that of the second polarizer is allowed to pass through, therefore, after passing through the second polarizer, the second light also attenuates, the first light is light reflected by the screen by the light emitted vertically upward by the screen, the polarization direction of the first light obtained by passing through the first polarizer is the same as that of the first polarizer, the polarization direction of the first light changes after passing through the medium, so that after passing through the first polarizer and the second polarizer, the first light also attenuates, and the light reflected by the fingerprint of the user has less influence by the polarizer due to the fact that the polarization direction of the light is consistent with that of the polarizer, so that when the fingerprint is collected, the influence of the fingerprint module by the two optical noises is reduced, and the quality of the collected fingerprint image is further improved.
In an implementation manner of the present application, the collimating lens is provided with a second polarizer, including: the upper surface of the collimating lens is provided with a second polaroid; or a second polaroid is arranged in the middle of the collimating lens; or, the lower surface of the collimating lens is provided with a second polaroid. As particularly shown in fig. 3.
In an implementation of the present application, the collimating lens and the second polarizer are integrally disposed, or are disposed in a stack.
The second polaroid is arranged on the upper surface or the lower surface of the collimating lens, and the integrated arrangement means that the polaroid is embedded into the upper surface or the lower surface of the collimating lens to form the collimating lens with the polarizing function, or a polarizing film is plated on the upper surface or the lower surface of the collimating lens in an optical coating mode to form the collimating lens with the polarizing function.
The second polaroid is arranged in the middle of the collimating lens, and the integrated arrangement means that the polaroid is embedded in the middle of the collimating lens to form the collimating lens with the polarizing function.
The second polaroid is arranged on the upper surface or the lower surface of the collimating lens, and the lamination arrangement means that a layer of polaroid is overlapped on the upper surface or the lower surface of the collimating lens.
In one implementation of the present application, the surface of the optical fingerprint sensor is provided with an infrared (Infrared Radiation, IR) film. The IR film functions to cut off the infrared light and transmit the visible light, and the IR film can be manufactured by optical coating.
In an implementation of the present application, the surface of the collimating lens is provided with an IR film.
The method specifically comprises the following steps: a second polaroid is arranged in the middle of the collimating lens, and an IR film can be arranged on the upper surface or the lower surface of the collimating lens; a second polaroid is arranged on the upper surface of the collimating lens, and the second polaroid is arranged on the collimating lens in an optical coating mode, and an IR film can be arranged on the lower surface of the collimating lens; a second polaroid is arranged on the upper surface of the collimating lens, and is arranged on the collimating lens in a lamination manner, and an IR film can be arranged on the upper surface or the lower surface of the collimating lens; a second polaroid is arranged on the lower surface of the collimating lens, and the second polaroid is arranged on the collimating lens in an optical coating mode, and an IR film can be arranged on the upper surface of the collimating lens; the lower surface of the collimating lens is provided with a second polaroid which is arranged on the collimating lens in a lamination way, and the upper surface or the lower surface of the collimating lens can be provided with an IR film.
It can be seen that the surface of the optical fingerprint sensor or the collimating lens is provided with an IR film, which can filter infrared light, so as to further improve the quality of the collected fingerprint image.
In an implementation of the present application, the screen includes a liquid crystal display (Liquid Crystal Display) screen or an Organic Light-Emitting Diode (OLED) display screen.
In an implementation manner of the present application, the first light and the second light are light emitted by the preset area.
It can be seen that when the fingerprint image is acquired, only the preset area is lightened, so that the power consumption of the electronic equipment can be reduced, and the service time of the electronic equipment is prolonged.
In an implementation of the present application, the first light and the second light are light of a single color, and the single color includes a single green, a single red, or a single blue.
Further, when the single color is single green, the first light and the second light are light emitted by the green pixels in the preset area. When the single color is single red, the first light and the second light are light emitted by red pixels in the preset area. When the single color is single blue, the first light and the second light are light emitted by blue pixels in the preset area.
Further, when the fingerprint image is acquired, red, green and blue pixels in the preset area are used in turn. Such as this time using the green pixels in the preset area, next time using the red pixels in the preset area, next time using the blue pixels in the preset area, next time using the green pixels in the preset area, and so on.
Since the preset area is always used, the lifetime of the preset area is affected, and in the embodiment of the application, red, green and blue pixels are used in turn, so that the lifetime of the preset area is prolonged.
Referring to fig. 4, fig. 4 is a flowchart of a fingerprint collection method provided in an embodiment of the present application, where the method is applied to the electronic device, and includes:
step 401: when a fingerprint acquisition instruction is detected, the electronic equipment lightens the screen, the fingerprint module is started, first light rays emitted by the screen in a first direction are filtered by the first polaroid and the second polaroid after being reflected by the screen, second light rays emitted by the screen in a second direction are filtered by the second polaroid, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment;
step 402: the electronic equipment collects third light through the fingerprint module, a fingerprint image is obtained after processing, and the third light is reflected by the fingerprint of the user by the light emitted by the screen to the first direction.
It can be seen that, in this embodiment of the present application, the second light is light emitted vertically downward by the screen, after the second light passes through the second polarizer, only the light having the same polarization direction as that of the second polarizer is allowed to pass through, therefore, after passing through the second polarizer, the second light also attenuates, the first light is light reflected by the screen by the light emitted vertically upward by the screen, the polarization direction of the first light obtained by passing through the first polarizer is the same as that of the first polarizer, the polarization direction of the first light changes after passing through the medium, so that after passing through the first polarizer and the second polarizer, the first light also attenuates, and the light reflected by the fingerprint of the user has less influence by the polarizer due to the fact that the polarization direction of the light is consistent with that of the polarizer, so that when the fingerprint is collected, the influence of the fingerprint module by the two optical noises is reduced, and the quality of the collected fingerprint image is further improved.
Further, the electronic device lights up the screen, including: and the electronic equipment lightens the preset area of the screen.
Further, the electronic device lighting the preset area of the screen includes: and the electronic equipment lights the preset area to the target brightness.
Wherein the target brightness is a preset brightness; or the target brightness is determined by the electronic equipment according to the ambient light brightness of the current environment of the electronic equipment, for example, the target brightness corresponding to the ambient light brightness is determined according to the mapping relation between the ambient light brightness and the preset area brightness; or the target brightness is determined by the electronic equipment according to the current geographic position of the electronic equipment, for example, the target brightness corresponding to the current geographic position is determined according to the mapping relation between the geographic position and the brightness of a preset area; etc.
It can be seen that when the fingerprint image is acquired, only the brightness of the preset area is lightened, so that the power consumption can be reduced.
Further, the detecting fingerprint acquisition instruction includes: in the case where a long press operation for the preset area is detected, or in the case where a click operation for a first area of the preset area is detected before, and in the case where a long press operation for a second area of the preset area is detected after, or in the case where a click operation for an area of the screen other than the preset area is detected before, and in the case where a long press operation for the preset area is detected after, the electronic device detects a fingerprint acquisition instruction, the first area being different from the second area.
It can be seen that the fingerprint acquisition instruction is triggered through more complicated operation, so that misoperation of a user is avoided.
Referring to fig. 5, as shown in the structural schematic diagram of an electronic device provided in the embodiment of the present application, the electronic device includes a screen and a fingerprint module, where the fingerprint module is disposed below a preset area of the screen, the screen is provided with a first polarizer, the fingerprint module includes a collimating lens and an optical fingerprint sensor, the collimating lens is disposed on a side of the optical fingerprint sensor, which is close to the screen, and the collimating lens is provided with a second polarizer, and polarization directions of the first polarizer and the second polarizer are consistent; the electronic device further comprises a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs comprising instructions for:
when a fingerprint acquisition instruction is detected, the screen is lightened, the fingerprint module is started, first light rays emitted by the screen in a first direction are filtered by the first polaroid and the second polaroid after being reflected by the screen, second light rays emitted by the screen in a second direction are filtered by the second polaroid, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment;
and collecting third light rays through the fingerprint module, and obtaining a fingerprint image after processing, wherein the third light rays are light rays reflected by the user fingerprint by the light rays emitted by the screen to the first direction.
It can be seen that, in this embodiment of the present application, the second light is light emitted vertically downward by the screen, after the second light passes through the second polarizer, only the light having the same polarization direction as that of the second polarizer is allowed to pass through, therefore, after passing through the second polarizer, the second light also attenuates, the first light is light reflected by the screen by the light emitted vertically upward by the screen, the polarization direction of the first light obtained by passing through the first polarizer is the same as that of the first polarizer, the polarization direction of the first light changes after passing through the medium, so that after passing through the first polarizer and the second polarizer, the first light also attenuates, and the light reflected by the fingerprint of the user has less influence by the polarizer due to the fact that the polarization direction of the light is consistent with that of the polarizer, so that when the fingerprint is collected, the influence of the fingerprint module by the two optical noises is reduced, and the quality of the collected fingerprint image is further improved.
In an implementation of the present application, in terms of lighting the screen, the above-mentioned program includes instructions specifically for performing the following steps: and illuminating the preset area of the screen.
It should be noted that, the specific implementation process of this embodiment may refer to the specific implementation process described in the foregoing method embodiment, which is not described herein.
The foregoing embodiments mainly describe the solutions of the embodiments of the present application from the point of view of the method-side execution procedure. It will be appreciated that the electronic device, in order to achieve the above-described functions, includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven 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.
According to the embodiment of the 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 units may be implemented in hardware or in software functional units. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice.
The following is an embodiment of the apparatus, which is configured to execute a method implemented by an embodiment of the method of the present application. Referring to fig. 6, fig. 6 is a fingerprint acquisition device provided in an embodiment of the present application, applied to the above mobile terminal, and the fingerprint acquisition device includes:
a screen control unit 601, configured to light the screen when a fingerprint acquisition instruction is detected;
the module control unit 602 is configured to enable the fingerprint module, wherein a first light ray reflected by the screen in a first direction is filtered by the first polarizer and the second polarizer, a second light ray emitted by the screen in a second direction is filtered by the second polarizer, the first direction and the second direction are perpendicular to the screen, the first direction is directed to the outside of the electronic device, and the second direction is directed to the inside of the electronic device;
the image collecting unit 603 is configured to collect a third light ray through the fingerprint module, and obtain a fingerprint image after processing, where the third light ray is a light ray reflected by a user fingerprint by a light ray emitted by the screen toward the first direction.
It can be seen that, in this embodiment of the present application, the second light is light emitted vertically downward by the screen, after the second light passes through the second polarizer, only the light having the same polarization direction as that of the second polarizer is allowed to pass through, therefore, after passing through the second polarizer, the second light also attenuates, the first light is light reflected by the screen by the light emitted vertically upward by the screen, the polarization direction of the first light obtained by passing through the first polarizer is the same as that of the first polarizer, the polarization direction of the first light changes after passing through the medium, so that after passing through the first polarizer and the second polarizer, the first light also attenuates, and the light reflected by the fingerprint of the user has less influence by the polarizer due to the fact that the polarization direction of the light is consistent with that of the polarizer, so that when the fingerprint is collected, the influence of the fingerprint module by the two optical noises is reduced, and the quality of the collected fingerprint image is further improved.
In an implementation manner of the present application, in lighting the screen, the screen control unit is specifically configured to: and illuminating the preset area of the screen.
It should be noted that the screen control unit 601, the module control unit 602, and the image acquisition unit 603 may be implemented by a processor.
The embodiment of the application also provides a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, where the computer program causes a computer to execute part or all of the steps of any one of the methods described in the embodiments of the method, where 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 one of the methods described in the method embodiments above. The computer program product may be a software installation package, said computer comprising an electronic device.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, 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 apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be implemented by a program that instructs associated hardware, and the program may be stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. The fingerprint module is characterized by comprising a screen and the fingerprint module, wherein the screen comprises cover glass, a display screen and a touch screen, the fingerprint module is arranged below a preset area of the screen, the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent;
the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays reflected by the cover plate glass from the light rays emitted by the screen in the first direction;
the second polarizer is used for filtering second light rays, the second light rays are light rays emitted by the screen in a second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment.
2. The fingerprint module of claim 1, wherein the collimating lens is provided with a second polarizer, comprising: and a second polaroid is arranged on the upper surface of the collimating lens.
3. The fingerprint module of claim 1, wherein the collimating lens is provided with a second polarizer, comprising: and a second polaroid is arranged in the middle of the collimating lens.
4. The fingerprint module of claim 1, wherein the collimating lens is provided with a second polarizer, comprising: and a second polaroid is arranged on the lower surface of the collimating lens.
5. The fingerprint module of any one of claims 1-4, wherein the collimating lens and the second polarizer are integrally disposed, or are stacked.
6. The fingerprint module of any one of claims 1-4, wherein the surface of the optical fingerprint sensor is provided with an infrared IR film.
7. The electronic equipment is characterized by comprising a screen and a fingerprint module, wherein the screen comprises cover plate glass, a display screen and a touch screen, the fingerprint module is arranged below a preset area of the screen, the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarizing directions of the first polaroid and the second polaroid are consistent;
the first polaroid and the second polaroid are used for filtering first light rays, and the first light rays are light rays reflected by the cover plate glass from the light rays emitted by the screen in the first direction;
the second polarizer is used for filtering second light rays, the second light rays are light rays emitted by the screen in a second direction, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment.
8. The electronic device of claim 7, wherein the screen comprises a Liquid Crystal Display (LCD) screen or an Organic Light Emitting Diode (OLED) display screen.
9. The fingerprint acquisition method is characterized by being applied to electronic equipment, wherein the electronic equipment comprises a screen and a fingerprint module, the screen comprises cover glass, a display screen and a touch screen, the fingerprint module is arranged below a preset area of the screen, the screen is provided with a first polaroid, the fingerprint module comprises a collimating lens and an optical fingerprint sensor, the collimating lens is arranged on one side, close to the screen, of the optical fingerprint sensor, the collimating lens is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are consistent; the method comprises the following steps:
when a fingerprint acquisition instruction is detected, the screen is lightened, the fingerprint module is started, first light rays emitted by the screen in a first direction are filtered by the first polaroid and the second polaroid after being reflected by the cover plate glass, second light rays emitted by the screen in a second direction are filtered by the second polaroid, the first direction and the second direction are perpendicular to the screen, the first direction points to the outside of the electronic equipment, and the second direction points to the inside of the electronic equipment;
and collecting third light rays through the fingerprint module, and obtaining a fingerprint image after processing, wherein the third light rays are light rays reflected by the user fingerprint by the light rays emitted by the screen to the first direction.
10. The method of claim 9, wherein the illuminating the screen comprises: and illuminating the preset area of the screen.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280520.7A CN109376668B (en) | 2018-10-30 | 2018-10-30 | Fingerprint module, electronic equipment and fingerprint acquisition method |
| EP19879208.7A EP3862915A4 (en) | 2019-09-16 | Fingerprint module, electronic device and fingerprint acquisition method | |
| PCT/CN2019/105991 WO2020088129A1 (en) | 2018-10-30 | 2019-09-16 | Fingerprint module, electronic device and fingerprint acquisition method |
| US17/243,424 US20210248345A1 (en) | 2018-10-30 | 2021-04-28 | Fingerprint Assembly, Electronic Device and Fingerprint Acquisition Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280520.7A CN109376668B (en) | 2018-10-30 | 2018-10-30 | Fingerprint module, electronic equipment and fingerprint acquisition method |
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| CN109376668A CN109376668A (en) | 2019-02-22 |
| CN109376668B true CN109376668B (en) | 2024-02-27 |
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| CN201811280520.7A Active CN109376668B (en) | 2018-10-30 | 2018-10-30 | Fingerprint module, electronic equipment and fingerprint acquisition method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020088129A1 (en) * | 2018-10-30 | 2020-05-07 | Oppo广东移动通信有限公司 | Fingerprint module, electronic device and fingerprint acquisition method |
| US20200409191A1 (en) * | 2019-06-28 | 2020-12-31 | Shenzhen GOODIX Technology Co., Ltd. | Enhancement film for under-screen optical fingerprint sensor |
| CN111964778A (en) * | 2020-08-21 | 2020-11-20 | 深圳市汇顶科技股份有限公司 | Under-screen environment optical sensor and terminal equipment |
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