WO2020037683A1 - 背光模组、屏下指纹识别方法、装置和电子设备 - Google Patents

背光模组、屏下指纹识别方法、装置和电子设备 Download PDF

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Publication number
WO2020037683A1
WO2020037683A1 PCT/CN2018/102339 CN2018102339W WO2020037683A1 WO 2020037683 A1 WO2020037683 A1 WO 2020037683A1 CN 2018102339 W CN2018102339 W CN 2018102339W WO 2020037683 A1 WO2020037683 A1 WO 2020037683A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint recognition
screen
under
recognition device
fingerprint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/102339
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English (en)
French (fr)
Inventor
谢浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Priority to PCT/CN2018/102339 priority Critical patent/WO2020037683A1/zh
Priority to EP18922080.9A priority patent/EP3644222A4/en
Priority to CN201880001317.3A priority patent/CN109196522B/zh
Priority to CN201920454526.5U priority patent/CN209625238U/zh
Priority to PCT/CN2019/081564 priority patent/WO2020037991A1/zh
Priority to CN201980002489.7A priority patent/CN110678874B/zh
Priority to EP19821432.2A priority patent/EP3637316A4/en
Priority to PCT/CN2019/100771 priority patent/WO2020035021A1/zh
Priority to CN201921324000.1U priority patent/CN210573827U/zh
Priority to CN201980003991.XA priority patent/CN111033518B/zh
Priority to CN201922002568.8U priority patent/CN210895487U/zh
Priority to US16/716,456 priority patent/US11144744B2/en
Priority to US16/729,285 priority patent/US20200134283A1/en
Publication of WO2020037683A1 publication Critical patent/WO2020037683A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • G02B5/208Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/10Image acquisition
    • G06V10/12Details of acquisition arrangements; Constructional details thereof
    • G06V10/14Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/141Control of illumination
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/10Image acquisition
    • G06V10/12Details of acquisition arrangements; Constructional details thereof
    • G06V10/14Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/143Sensing or illuminating at different wavelengths
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1318Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1324Sensors therefor by using geometrical optics, e.g. using prisms
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1382Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • G06V40/1394Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • Embodiments of the present invention relate to the field of under-screen fingerprint recognition, and more specifically, to a backlight module, an under-screen fingerprint recognition method, device, and electronic device.
  • the fingerprint recognition under the screen is mainly applied to Organic Light-Emitting Diode (OLED) screens.
  • OLED Organic Light-Emitting Diode
  • the principle is that the fingerprint recognition module under the OLED screen uses the light transmission characteristics of the OLED screen to receive the OLED screen itself. Reflected light formed after reflection by a finger detects a fingerprint.
  • liquid crystal display Liquid Crystal Display, LCD
  • LCD liquid Crystal Display
  • a backlight module an under-screen fingerprint identification method, a device, and an electronic device.
  • the backlight module, an under-screen fingerprint identification method, device, and electronic device can effectively realize an under-screen fingerprint identification of a passive light-emitting display.
  • an under-screen fingerprint identification device which is applied to an electronic device having a backlight module.
  • the under-screen fingerprint identification device includes:
  • a fingerprint recognition module which is disposed below the backlight module, and is used to receive the infrared light emitted from a human finger and pass through the infrared of the backlight module.
  • a light signal, the infrared light signal is used to detect fingerprint information of the finger;
  • the haze when the infrared light signal passes through the backlight module is smaller than the haze when the visible light for displaying an image passes through the backlight module.
  • a transmittance of the infrared light signal when passing through the backlight module is greater than a transmittance of the visible light when passing through the backlight module.
  • a reflectance of the infrared light signal passing through the backlight module is smaller than a reflectance of the visible light passing through the backlight module.
  • the under-screen fingerprint recognition device further includes a visible light filter disposed between the backlight module and the fingerprint recognition module.
  • the under-screen fingerprint recognition device includes:
  • At least one of the infrared light sources, and each of the infrared light sources is disposed below the display screen.
  • the under-screen fingerprint recognition device includes a plurality of the infrared light sources
  • the plurality of infrared light sources are symmetrically disposed with the fingerprint recognition module as a center, or the plurality of infrared light sources are symmetrically disposed.
  • the infrared light source is arranged symmetrically based on a symmetry axis, which is a line parallel to the display screen passing through the fingerprint identification module.
  • the infrared light source is flatly attached to the lower surface of the display screen, or the infrared light source is obliquely attached to the lower surface of the display screen.
  • the at least one infrared light source is integrated in the backlight module.
  • the at least one infrared light source is integrated with a light source for displaying an image in the backlight module.
  • the under-screen fingerprint recognition device further includes:
  • Control processing unit modulation circuit, driving circuit and demodulation circuit
  • control processing unit is connected to the infrared light source through the modulation circuit, the control processing unit is connected to the infrared light source through the driving circuit, and the fingerprint recognition module is connected to the infrared light source through the demodulation circuit.
  • the processing control unit is configured to control the modulation circuit to modulate the infrared light signal, and the processing control unit is further configured to control the driving circuit to drive the infrared light source to emit the infrared light signal, and the demodulation The circuit is used for demodulating the infrared light signal received by the fingerprint identification module and sending the demodulated infrared light signal to the control processing unit.
  • a collection area of the fingerprint recognition module is located in the display screen, and the collection area includes multiple collection blocks;
  • the fingerprint identification module specifically includes: an obtaining unit and a fingerprint identification unit;
  • the obtaining unit is configured to:
  • the fingerprint recognition unit is configured to perform fingerprint recognition according to the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when a change amount of the light intensity is greater than or equal to a preset threshold.
  • the obtaining unit is specifically configured to obtain the light intensity through a photoelectric sensor.
  • the under-screen fingerprint recognition device further includes: a range adjustment unit, where the range adjustment unit is configured to:
  • the acquiring unit Before the acquiring unit acquires the light intensity, acquire an infrared light signal reflected by a human finger; when the infrared light signal is not within the detection range of the photoelectric sensor, adjust the detection range of the photoelectric sensor.
  • the photoelectric sensor is further configured to detect fingerprint information or heart rate information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold.
  • the under-screen fingerprint recognition device further includes: a pressure sensor, configured to obtain a pressing force with which a human finger presses the collection block before the acquisition unit acquires the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and it is determined that the display screen is not blocked.
  • the under-screen fingerprint recognition device further includes: an illuminance sensor, configured to determine whether the display screen is blocked before the acquisition unit acquires the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and the object pressing the collection block is a living body.
  • the under-screen fingerprint recognition device further includes: a living body detection unit, where the living body detection unit is configured to:
  • the collection block includes multiple blocks.
  • the under-screen fingerprint recognition device further includes:
  • An execution unit is configured to execute a target application corresponding to the first pressing order according to a first pressing order and mapping relationship information of the human finger pressing the multiple blocks, where the mapping relationship information includes at least one pressing order and For a correspondence relationship of at least one application, the at least one pressing sequence includes the first pressing sequence.
  • the obtaining unit is specifically configured to:
  • the light intensity is obtained when it is determined that the display interface of the display screen is switched to a fingerprint verification interface, and the fingerprint verification interface includes an identification of the collection area.
  • the under-screen fingerprint recognition device further includes:
  • the switching unit is configured to switch the display interface of the display screen to the fingerprint verification interface after a user presses a power key.
  • the under-screen fingerprint recognition device further includes:
  • the switching unit is configured to switch a display interface of the display screen to the fingerprint verification interface after the user touches the display screen.
  • an electronic device including:
  • the under-screen fingerprint identification device described in the first aspect and any possible implementation manner of the first aspect includes a fingerprint identification module;
  • a backlight module, and the fingerprint identification module is disposed below the backlight module.
  • the backlight module includes:
  • the haze when the infrared light signal passes through the diffusion layer is smaller than the haze when the visible light passes through the diffusion layer.
  • a transmittance of the infrared light signal when passing through the diffusion layer is greater than a transmittance of the visible light when passing through the diffusion layer.
  • the backlight module includes:
  • the transmittance of the infrared light signal through the reflective layer is greater than the transmittance of the visible light through the reflective layer.
  • the backlight module includes:
  • a steel plate the steel plate is formed with an opening, and the fingerprint recognition module is disposed below the opening; the fingerprint recognition module is configured to receive the human light emitted by the infrared light source and pass through the opening; The infrared light signal of the hole.
  • the electronic device further includes a display screen, and the under-screen fingerprint recognition device is disposed below the display screen.
  • a backlight module for fingerprint recognition under the screen is provided.
  • the backlight module is configured to transmit an infrared light signal emitted by an infrared light source to a human finger to the fingerprint recognition module.
  • the signal is used to detect fingerprint information of the finger;
  • the haze of the backlight module to the infrared light signal is smaller than the haze of visible light used for image display.
  • the backlight module includes:
  • the haze when the infrared light signal passes through the diffusion layer is smaller than the haze when the visible light passes through the diffusion layer.
  • a transmittance of the infrared light signal when passing through the diffusion layer is greater than a transmittance of the visible light when passing through the diffusion layer.
  • the backlight module includes: a reflective layer, and a transmittance of the infrared light signal through the reflective layer is greater than a transmittance of the visible light through the reflective layer.
  • the backlight module includes: a steel plate, the steel plate is formed with an opening, the fingerprint identification module is disposed below the opening, and the fingerprint identification module is configured to receive all The infrared light signal emitted by the infrared light source after irradiating a human finger and passing through the opening.
  • an electronic device including:
  • the electronic device further includes:
  • Fingerprint identification module infrared light source and display screen
  • the backlight module and the infrared light source are both disposed below the display screen, and the fingerprint recognition module is disposed below the backlight module;
  • the fingerprint recognition module is configured to receive the infrared light signal emitted by the infrared light source and irradiating a human finger and passed through the backlight module, and the infrared light signal is used to detect fingerprint information of the finger.
  • a method for identifying a fingerprint including:
  • Fingerprint identification is performed according to the fingerprint information.
  • obtaining fingerprint information of the collection area includes:
  • the fingerprint information is acquired.
  • the acquiring the light intensity of a collection block located in a collection area within a display screen includes:
  • the light intensity is obtained by a photoelectric sensor.
  • the method before the acquiring the light intensity of a collection block located in a collection area within a display screen, the method further includes:
  • the photoelectric sensor is further configured to detect fingerprint information or heart rate information.
  • obtaining fingerprint information of the collection area includes:
  • the fingerprint information is acquired when the light intensity satisfies a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold.
  • the method before the obtaining the fingerprint information, the method further includes:
  • a pressing force of a human finger to press the collection block is obtained through a pressure sensor.
  • obtaining fingerprint information of the collection area includes:
  • the fingerprint information is acquired.
  • the method before the obtaining the fingerprint information, the method further includes:
  • obtaining fingerprint information of the collection area includes:
  • the fingerprint information is acquired.
  • the method before the obtaining the fingerprint information, the method further includes:
  • the collection block includes multiple blocks.
  • the method further includes:
  • the mapping relationship information includes correspondence of at least one pressing sequence and at least one application In a relationship, the at least one pressing sequence includes the first pressing sequence.
  • the acquiring the light intensity of a collection block located in a collection area within a display screen includes:
  • the light intensity is obtained when it is determined that the display interface of the display screen is a fingerprint verification interface, and the fingerprint verification interface includes an identification of the collection area.
  • the method further includes:
  • the display interface of the display screen is switched to the fingerprint verification interface.
  • the method further includes:
  • the display interface of the display screen switches to the fingerprint verification interface.
  • an under-screen fingerprint recognition device including:
  • An obtaining unit configured to:
  • a fingerprint recognition unit is configured to perform fingerprint recognition according to the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when a change amount of the light intensity is greater than or equal to a preset threshold.
  • the obtaining unit is specifically configured to obtain the light intensity through a photoelectric sensor.
  • the under-screen fingerprint recognition device further includes: a range adjustment unit, where the range adjustment unit is configured to:
  • the acquiring unit Before the acquiring unit acquires the light intensity, acquire an infrared light signal reflected by a human finger; when the infrared light signal is not within the detection range of the photoelectric sensor, adjust the detection range of the photoelectric sensor.
  • the photoelectric sensor is further configured to detect fingerprint information or heart rate information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold.
  • the under-screen fingerprint recognition device further includes: a pressure sensor, configured to obtain a pressing force with which a human finger presses the collection block before the acquisition unit acquires the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and it is determined that the display screen is not blocked.
  • the under-screen fingerprint recognition device further includes: an illuminance sensor, configured to determine whether the display screen is blocked before the acquisition unit acquires the fingerprint information.
  • the obtaining unit is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and the object pressing the collection block is a living body.
  • the under-screen fingerprint recognition device further includes: a living body detection unit, where the living body detection unit is configured to:
  • the collection block includes multiple blocks.
  • the under-screen fingerprint recognition device further includes:
  • An execution unit is configured to execute a target application corresponding to the first pressing order according to a first pressing order and mapping relationship information of the human finger pressing the multiple blocks, where the mapping relationship information includes at least one pressing order and For a correspondence relationship of at least one application, the at least one pressing sequence includes the first pressing sequence.
  • the obtaining unit is specifically configured to:
  • the light intensity is obtained when it is determined that the display interface of the display screen is switched to a fingerprint verification interface, and the fingerprint verification interface includes an identification of the collection area.
  • the under-screen fingerprint recognition device further includes:
  • the switching unit is configured to switch the display interface of the display screen to the fingerprint verification interface after a user presses a power key.
  • the under-screen fingerprint recognition device further includes:
  • the switching unit is configured to switch a display interface of the display screen to the fingerprint verification interface after the user touches the display screen.
  • an electronic device including:
  • the electronic device further includes a display screen, and the under-screen fingerprint recognition device is disposed below the display screen.
  • the embodiment of the present application can realize the under-screen fingerprint recognition of the passive display screen.
  • the optical signal used for fingerprint identification is an infrared light signal from an infrared light source
  • the optical signal used for displaying an image is a visible light signal from a visible light source.
  • the under-screen fingerprint recognition device in the embodiment of the present application can not only avoid interference of visible light to fingerprint recognition, but also the infrared light signal is invisible light, and will not affect the displayed image.
  • the haze when the infrared light signal passes through the backlight module is smaller than the haze when the visible light used to display an image passes through the backlight module, not only the modulation of the visible light signal can be realized, but also the effective The loss of the infrared light signal in the optical path transmission is reduced.
  • the optical characteristics of the diffuser film, the reflective film, and the steel plate in the backlight module it is possible to effectively reduce the infrared light signal used for fingerprint recognition to pass through the backlight module.
  • the energy loss during grouping improves the efficiency of fingerprint recognition under the screen.
  • the under-screen fingerprint recognition device determines whether to trigger the fingerprint recognition module to collect fingerprint information of the collection area according to the light intensity of a partial area in the collection block located in the display screen, which can be effective. Improve the response speed of fingerprint recognition.
  • FIG. 1 is a schematic plan view of a mobile terminal to which the present application is applicable.
  • FIG. 2 is a partial cross-sectional view of the mobile terminal shown in FIG. 1 along A'-A '.
  • FIG. 3 is a schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of optical characteristics of haze of a diffusion plate according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the optical characteristics of the transmittance of the diffusion plate according to the embodiment of the present application.
  • FIG. 6 is a schematic diagram of optical characteristics of a reflective plate according to an embodiment of the present application.
  • FIG. 7 to 10 are schematic diagrams of an arrangement manner of the infrared light source according to the embodiment of the present application.
  • 11 and 12 are schematic diagrams of a bonding manner between an infrared light source and a display screen according to an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • FIG. 14 and FIG. 15 are schematic flowcharts of a fingerprint recognition method under the screen according to an embodiment of the present application.
  • 16 to 18 are schematic diagrams of a pressure sensor according to an embodiment of the present application.
  • FIG. 19 is another schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • FIG. 20 and FIG. 21 are another schematic flowchart of the method for identifying fingerprints under the screen according to the embodiment of the present application.
  • FIG. 22 is a schematic flowchart of an application operation method according to an embodiment of the present application.
  • FIG. 23 is another schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • FIG. 24 is another schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • FIG. 25 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • the under-screen fingerprint recognition technology refers to the installation of an under-screen fingerprint recognition device (such as a fingerprint recognition module) under the display screen, so as to realize fingerprint recognition operation inside the display area of the display screen, without the need to except the display area on the front of the electronic device. Set the fingerprint collection area.
  • an under-screen fingerprint recognition device such as a fingerprint recognition module
  • the under-screen fingerprint recognition technology may include under-screen optical fingerprint recognition technology, under-screen ultrasonic fingerprint recognition technology, or other types of under-screen fingerprint recognition technology.
  • the under-screen optical fingerprint recognition technology uses light returned from the top surface of the device display component for fingerprint sensing and other sensing operations.
  • the returned light carries information of an object (such as a finger) in contact with the top surface, and a specific optical sensor module located below a display screen is realized by capturing and detecting the returned light.
  • the design of the specific optical sensor module may be to achieve a desired optical imaging by appropriately configuring optical elements for capturing and detecting the returned light.
  • FIG. 1 and 2 are schematic diagrams of a mobile terminal 100 to which an under-screen fingerprint recognition device can be applied, wherein FIG. 1 is a front schematic diagram of a mobile terminal 100 to which an under-screen fingerprint recognition device can be applied, and FIG. 2 is a mobile phone shown in FIG. 1 Partial cross-sectional structure diagram of the terminal 100 along A'-A '.
  • the mobile terminal 100 may include a display screen 11 and an under-screen fingerprint recognition device 10, wherein the display screen 11 has a display area 102, and the under-screen fingerprint recognition device 10 is disposed on the display. Below the screen 11.
  • the display screen 11 may be a self-luminous display screen, which uses a self-luminous display unit as a display pixel.
  • the display screen 11 may be an Organic Light-Emitting Diode (OLED) display screen or a Micro-LED display screen.
  • the display screen 11 may also be a liquid crystal display (Liquid Crystal Display, LCD) or other passive light-emitting display screens, which are not limited in the embodiment of the present application.
  • the display screen 11 may specifically be a touch display screen, which can not only perform screen display, but also detect a user's touch or press operation, thereby providing the user with a man-machine user-interface.
  • the mobile terminal 100 may include a touch sensor, and the touch sensor may specifically be a touch panel (TP), which may be disposed on the surface of the display screen 11 or partially Integrated or integrated into the display screen 11 to form the touch display screen.
  • TP touch panel
  • the under-screen fingerprint recognition device 10 may be an optical under-screen fingerprint recognition device, which may include an optical fingerprint sensor having an optical sensing array, such as an optical fingerprint sensor; the optical The sensing array includes multiple optical sensing units, and the area where the optical sensing array is located is the fingerprint collection area of the under-screen fingerprint recognition device 10, and the multiple optical sensing units are used to collect user fingerprint characteristic information (such as fingerprints) Image information).
  • an optical fingerprint sensor having an optical sensing array, such as an optical fingerprint sensor
  • the optical The sensing array includes multiple optical sensing units, and the area where the optical sensing array is located is the fingerprint collection area of the under-screen fingerprint recognition device 10, and the multiple optical sensing units are used to collect user fingerprint characteristic information (such as fingerprints) Image information).
  • the optical sensing array of the under-screen fingerprint recognition device 10 may specifically be a photodetector array (also called a photodetector array), which includes a plurality of photodetector arrays.
  • the photodetectors or photodetectors are arranged in an array, and the photodetectors or photodetectors can be used as the optical sensing unit as described above.
  • the on-screen fingerprint recognition device 10 may be disposed at least in a partial area below the display screen 11 so that the fingerprint collection area (or sensor) of the under-screen fingerprint recognition device 10 Area) is located at least partially within the display area 102 of the display screen 11.
  • the fingerprint collection area 130 is located in a display area 102 of the display screen 11. Therefore, when the user needs to unlock the electronic device or perform other fingerprint verification, the user only needs to press his finger on the fingerprint collection area 130 located on the display screen 11 to implement the fingerprint input operation.
  • the present application when a finger touches, presses, or approaches (for ease of description, the present application is collectively referred to as pressing) on the fingerprint collection area 130, the light emitted by the display unit of the fingerprint collection area 130 is reflected on the finger and forms reflected light.
  • the reflected light may carry fingerprint characteristic information of a user's finger. For example, after the light is reflected on the fingerprint on the surface of the user's finger, the reflected light of the ridges and valleys of the fingerprint of the finger is different, so the reflected light can carry the user's fingerprint information.
  • the reflected light returns to the display screen 11 and is received by the photodetector array of the under-screen fingerprint recognition device 10 below it and converted into a corresponding electrical signal, that is, a fingerprint detection signal.
  • the mobile terminal 100 can obtain the user's fingerprint information based on the fingerprint detection signal, and can further perform fingerprint matching verification to complete the identity verification of the current user in order to confirm whether he has the authority to perform corresponding operations on the mobile terminal 100. operating.
  • the mobile terminal 100 Since fingerprint collection can be implemented within the display area 102 of the display screen 11, the mobile terminal 100 adopting the above structure does not need a special reserved space on the front side to set fingerprint keys (such as the Home key), so a full-screen solution, that is, all The display area 102 of the display screen 11 may extend substantially to the entire front of the mobile terminal 100.
  • the fingerprint collection area 130 shown in FIG. 1 is merely an example, and the embodiment of the present application is not limited thereto.
  • the under-screen fingerprint recognition device 10 may also be disposed in the entire area below the display screen 11 so as to extend the fingerprint collection area 130 to the entire display area of the entire display screen 11 102. Realize full-screen fingerprint recognition.
  • the mobile terminal 100 may further include a protective cover 110, which may be a transparent cover, such as a glass cover or a sapphire cover, which is located on the display screen. 11 is above and covers the front side of the mobile terminal 100, and a surface of the protective cover 110 may further be provided with a protective layer. Therefore, in the embodiment of the present application, the so-called finger pressing on the display screen 11 may actually mean that the finger presses the cover 110 above the display screen 11 or the surface of the protective layer covering the cover 110.
  • a protective cover 110 which may be a transparent cover, such as a glass cover or a sapphire cover, which is located on the display screen. 11 is above and covers the front side of the mobile terminal 100, and a surface of the protective cover 110 may further be provided with a protective layer. Therefore, in the embodiment of the present application, the so-called finger pressing on the display screen 11 may actually mean that the finger presses the cover 110 above the display screen 11 or the surface of the protective layer covering the cover 110.
  • a circuit board 150 such as a flexible printed circuit (FPC) may be further provided below the fingerprint recognition device 10.
  • the fingerprint recognition device 10 may be soldered to the circuit board 150 through a pad and passed through the pad.
  • the circuit board 150 implements electrical interconnection and signal transmission with other peripheral circuits or other components of the terminal device 100.
  • the fingerprint identification device 10 may receive the control signal from the processing order of the terminal device 100 through the circuit board 150, and may also output the fingerprint detection signal to the processing unit or control of the terminal device 100 through the circuit board 150. Unit, etc.
  • an OLED display screen is used as an example for the display screen 11.
  • the display screen 11 has an OLED display unit arranged in an array.
  • the OLED display unit 11 is an OLED display unit (ie, an OLED light source) located in the fingerprint collection area 130 as an excitation light source for fingerprint detection and identification.
  • the display screen 11 is a non-self-luminous display screen, such as a liquid crystal display screen or other passive light-emitting display screens
  • a backlight module is required as a light source of the display screen 11.
  • the optical characteristics of the backlight module due to the optical characteristics of the backlight module, after the visible light emitted by the backlight module is displayed by an image, the light signal that can be reflected by a human finger is very weak. Therefore, the light signal that the fingerprint recognition device 10 can receive cannot achieve fingerprint recognition.
  • the light signal reflected by the human finger is transmitted to the fingerprint identification device 10 with a very large energy loss, which in turn prevents fingerprint identification. That is, the fingerprint recognition scheme under the OLED screen is not suitable for the LCD screen.
  • An embodiment of the present application provides an under-screen fingerprint recognition device, which can implement optical fingerprint recognition under an LCD screen.
  • FIG. 3 is a schematic structural diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • the under-screen fingerprint recognition device 10 may be applied to an electronic device having a backlight module 20 and a display screen 11.
  • the under-screen fingerprint recognition device 10 may include:
  • a fingerprint recognition module 3 the backlight module 20 is arranged below the display screen 11; the fingerprint recognition module 3 is arranged below the backlight module 20; the fingerprint recognition module 3 is used for receiving The infrared light signal emitted by the infrared light source 5 after irradiating a human finger and passing through the backlight module 20 is used to detect fingerprint information of the finger; wherein the infrared light signal passes through all
  • the haze of the backlight module 20 is smaller than the haze of visible light for displaying images when passing through the backlight module 20.
  • the infrared light signal received by the fingerprint recognition module 3 for fingerprint recognition may be a light signal that is optically processed by a human finger to the infrared light signal emitted by the infrared light source.
  • the light signal received by the fingerprint recognition module 3 may be the infrared light signal reflected by a human finger and passed through the backlight module 20, or may be diffused through a human finger and passed through the backlight.
  • the infrared light signal of the module 20 does not specifically limit this.
  • the infrared light signal emitted by the infrared light source 5 may be used for fingerprint identification, and the infrared light signal is invisible light.
  • the light signal used for image display on the display screen 11 is a visible light source.
  • the visible light source may be any light source located behind a liquid crystal display (LCD).
  • the visible light source may be an electroluminescent (EL) backlight, a compact cold cathode fluorescent lamp (CCFL), or an LED backlight.
  • EL electroluminescent
  • CCFL compact cold cathode fluorescent lamp
  • the under-screen fingerprint recognition device 10 in the embodiment of the present application uses an infrared light signal from the infrared light source 5 for the optical signal for fingerprint recognition, and uses a visible light source for the light signal for displaying an image. Visible light signal. Therefore, the under-screen fingerprint recognition device 10 in the embodiment of the present application can not only avoid interference of fingerprint recognition by visible light, but also the infrared light signal is invisible light, which will not affect the displayed image.
  • the haze of the infrared light signal passing through the backlight module 20 is smaller than the haze of visible light used to display an image when passing through the backlight module 20, not only the modulation of the visible light signal can be achieved, but also It can effectively reduce the loss of the infrared light signal in the optical path transmission.
  • the transmittance of the infrared light signal when passing through the backlight module is greater than the transmittance of visible light when passing through the backlight module.
  • a reflectance of the infrared light signal passing through the backlight module is smaller than a reflectance of the visible light passing through the backlight module.
  • the infrared light source 5 may be fixed below the display screen 11, and the fingerprint recognition module 3 may also be fixed below the display screen 11.
  • the infrared light source 5 may be pasted under the display screen 11 through an optical adhesive 4.
  • the fingerprint recognition module 3 can also be fixed below the display screen 11 mechanically.
  • the fingerprint identification module 3 may be fixed below the display screen 11 by means of a screw connection.
  • the optical glue 4 may be any optical liquid glue or optical solid glue.
  • the optical refractive indices of the optical glue 4 and the display screen 11 are the same or similar, and thus the infrared light signal emitted by the infrared light source 5 can be improved as much as possible. Utilization.
  • the at least one infrared light source 5 is integrated in the backlight module 20.
  • the at least one infrared light source 5 and the light source for displaying images in the backlight module 20 are integrated and arranged.
  • the at least one infrared light source 5 and the light source for displaying images in the backlight module 20 are integrated and arranged side by side.
  • the at least one infrared light source 5 and the light source for displaying images in the backlight module 20 may be integrated and arranged in a non-parallel manner. This embodiment of the present application does not specifically limit this.
  • the backlight module 20 may include a composite film 21, a light enhancement film 22, a diffusion film 23, a light guide plate 24, and a reflection film. 25 and 26 steel plates.
  • the visible light emitted by the visible light source is transmitted to the diffusion film 23 after passing through the light guide plate 24, and the light diffused by the diffusion film 23 is transmitted to the light enhancement film 22, which is used to gain the received optical signal. And send the gain optical signal to the composite film 21, the composite film 21 receives the optical signal for further gaining the received optical signal, and transmits the gain optical signal to the display screen 11 for image processing display.
  • the backlight module 20 shown in FIG. 3 is only an example, and the embodiment of the present application is not limited thereto.
  • the backlight module 20 may not include a steel plate 26 and / or a reflective film 25.
  • the light guide plate 24 may use high-tech materials with extremely high reflectivity and no light absorption, and use laser engraving technology or ultraviolet (Ultra-Violet Ray, UV) screen printing on the bottom surface of the optical-grade acrylic sheet. Technologies such as technology are printed with light guide dots.
  • the optical-grade acrylic sheet is used to absorb the light from the lamp to stay on the surface of the optical-grade acrylic sheet. When the light hits each light guide point, the reflected light will diffuse to various angles, and then the reflection conditions will be destroyed and emitted from the front of the light guide plate.
  • the function of the light guide plate 24 is to guide the scattering direction of light, to improve the brightness of the panel, and to ensure the uniformity of the brightness of the panel.
  • the visible light source may be located at the side of the light guide plate 24. The light emitted by the visible light source is introduced into the inside of the light guide plate 24 by reflection. When the light hits the diffusion point, the reflected light will diffuse to various angles, and then the front of the light guide plate 24 Shoot out.
  • various dense and diffusive points of different sizes may be used to make the light guide plate 24 emit light uniformly.
  • the haze when the infrared light signal passes through the diffusion layer 23 is smaller than when the visible light used to display an image passes through the diffusion layer 23. Haze.
  • the transmittance of the infrared light signal when passing through the diffusion layer 23 is greater than the transmittance of the visible light when passing through the diffusion layer 23. Photometric.
  • the diffuser plate 23 can not only improve the brightness of the front surface of the display screen 11 and make the distribution of visible light more uniform, thereby ensuring that users will not see the reflection points from the front surface. Moreover, the haze when the infrared light signal passes through the diffusion layer 23 is smaller than the haze when visible light for displaying an image passes through the diffusion layer 23, and the infrared light signal passes through the diffusion layer. The light transmittance at 23 is greater than the light transmittance when the visible light passes through the diffusion layer 23, which can effectively reduce the loss of the infrared light signal in the optical path transmission.
  • the directivity of the light signal emitted from the diffuser plate 23 is very poor, in the embodiment of the present application, the direction of the visible light signal can be effectively corrected by the light-increasing film 22 to achieve the effect of condensing and improve the brightness of the front side of the display screen 11.
  • the light enhancement film 22 may be placed between the diffusion layer 23 and the display screen 11.
  • the light enhancement film 22 may be implemented by a prism film.
  • the prism film can converge the light emitted from the diffusion sheet 23 uniformly to various angles onto the axial angle, that is, the front view angle, that is, without increasing In the case of total luminous flux emitted, the axial brightness is increased.
  • the prism film can select the incident light to allow the light that meets the convergent angle to pass, and the light that does not meet the conditions is reflected back to the diffusion sheet 23, diffused again in the diffusion sheet 23, and then returned to the prism. Film until the emission conditions are met.
  • the light enhancement film 22 may be implemented by a reflective polarizer.
  • the reflective polarizer is different from a prism.
  • the reflective polarizer can be cyclically brightened according to different polarization directions of visible light signals.
  • the reflective polarizer can accurately reflect 100% of polarized light parallel to its optical axis direction. While the polarized light in the other orthogonal direction can normally penetrate the reflective polarizer.
  • the role of the reflection plate 25 in the embodiment of the present application in image display is to reflect the light exposed from the bottom surface of the light guide plate 24 back to the light guide plate, so as to improve the use efficiency of light.
  • the transmittance of the infrared light signal through the reflective layer 25 is greater than the transmittance of the visible light through the reflective layer 25. rate.
  • the reflective layer 25 since the transmittance of the infrared light signal through the reflective layer 25 is greater than the transmittance of the visible light through the reflective layer 25, the reflective layer 25 can not only improve light It can also reduce the loss of the infrared light signal in the transmission path by the reflective layer 25 and improve the quality of fingerprint recognition.
  • the steel plate 26 is formed with an opening 261, and the fingerprint identification module 3 is disposed below the opening 261, and the fingerprint identification The module 3 is configured to receive the infrared light signal emitted by the infrared light source 5 after irradiating a human finger and passing through the opening 261.
  • the under-screen fingerprint recognition device 10 further includes a visible light filter 6, and the visible light filter 6 may be disposed between the backlight module 20 and the fingerprint recognition module 3. between. Therefore, the visible light transmitted to the visible light filter 6 can be filtered, and the recognition quality of the fingerprint recognition module 3 can be further improved.
  • the visible light filter 6 may be specifically configured to filter out a wavelength of visible light, for example, visible light used for image display.
  • the filter 109 may specifically include one or more optical filters, and the one or more optical filters may be configured as, for example, a band-pass filter to filter out light emitted from a visible light source while not filtering infrared light. signal.
  • the one or more optical filters may be implemented, for example, as an optical filter coating, which is formed on one or more continuous interfaces, or may be implemented as one or more discrete interfaces.
  • the visible light filter 6 can be fabricated on the surface of any optical component, or along the optical path of the reflected light formed by the finger reflection to the fingerprint recognition module 3.
  • FIG. 3 only takes the visible light filter 6 disposed between the steel plate 26 and the fingerprint recognition module 3 as an example, but this application is not limited thereto.
  • the visible light filter 6 may be attached to the bottom surface of the display screen 11, above the steel plate 26, or inside the fingerprint recognition module 3.
  • the on-screen fingerprint recognition device 10 includes:
  • At least one of the infrared light sources 5 is disposed below the display screen.
  • the under-screen fingerprint recognition device 10 when the under-screen fingerprint recognition device 10 includes a plurality of the infrared light sources 5, the plurality of the infrared light sources 5 are centered on the fingerprint recognition module 3. It is arranged symmetrically, or the plurality of infrared light sources are arranged symmetrically based on a symmetry axis, which is a line passing through the fingerprint identification module 3 and parallel to the display screen 11.
  • the under-screen fingerprint recognition device 10 may include two of the infrared light sources 5, and the projections formed by the two infrared light sources 5 and the fingerprint recognition module 3 on the display screen 11 are Isosceles triangle.
  • the under-screen fingerprint recognition device 10 may include three projections of the infrared light source 5, and the three infrared light sources 5 and the fingerprint recognition module 3 form a projection on the display screen 11. It is an isosceles triangle, wherein the three infrared light sources 5 are all arranged on the bottom side of the isosceles triangle and are symmetrically arranged.
  • the under-screen fingerprint recognition device 10 may include four of the infrared light sources 5.
  • the projection of the four infrared light sources 5 on the display screen 11 is rectangular, and the fingerprint recognition The module 3 is located at the center of the rectangle.
  • the under-screen fingerprint recognition device 10 may include a strip-shaped light source, and the strip-shaped light source may include a plurality of the infrared light sources 5, the plurality of infrared light sources 5 and the fingerprint identification
  • the projection formed by the module 3 on the display screen 11 is an isosceles triangle, wherein the plurality of infrared light sources 5 are all disposed on the bottom side of the isosceles triangle and are symmetrically disposed.
  • the infrared light source 5 is obliquely attached to the lower surface of the display screen 11.
  • the utilization rate of the infrared light signal emitted by the infrared light source 5 in the fingerprint recognition process can be effectively improved.
  • the infrared light source 5 is flatly attached to the lower surface of the display screen 11.
  • the infrared light source 5 is flatly attached to the lower surface of the display screen 11 to effectively simplify the bonding process, thereby improving the yield during the product assembly process.
  • the infrared light signal emitted by the infrared light source 5 is used for fingerprint identification.
  • natural light in the environment also exists infrared light, it is likely that the infrared light in the environment will also be transmitted to the fingerprint recognition module 3
  • the infrared light signals received by the fingerprint recognition module 3 may not carry fingerprint information, thereby reducing the recognition efficiency of the fingerprint recognition module 3.
  • FIG. 13 is another schematic block diagram of an under-screen fingerprint recognition device according to an embodiment of the present application.
  • the under-screen fingerprint recognition device 10 may further include:
  • Control processing unit 8 modulation circuit 7, drive circuit 6, and demodulation circuit 9;
  • control processing unit 8 is connected to the infrared light source 5 through the modulation circuit 7, the control processing unit 8 is connected to the infrared light source 5 through the driving circuit 6, and the fingerprint recognition module 3
  • the demodulation circuit 9 is connected to the control processing unit 8; the processing control unit 8 is configured to control the modulation circuit 7 to modulate the infrared light signal, and the processing control unit 8 is further configured to control all
  • the driving circuit 6 drives the infrared light source 5 to emit the infrared light signal, and the demodulation circuit 9 is configured to demodulate the infrared light signal received by the fingerprint recognition module 3 and send the demodulated infrared light signal To the control processing unit 8.
  • the infrared light source 5 is modulated by the modulation circuit 7 so that the infrared light signal emitted by the infrared light source 5 is different from the infrared light signal in the environment.
  • the infrared light source 5 can be turned on or off by using a specific modulation frequency. Since most of the light in the environment can be regarded as a light signal with a very small frequency or a very slow frequency change, a modulated signal is used. This method can well shield the influence of strong light in the environment.
  • the signal collected by the fingerprint identification module 3 also includes the relevant modulation frequency.
  • the signal can be restored to the demodulation circuit 9 and sent to the The processing unit 8 is controlled so that the control processing unit 8 performs fingerprint recognition.
  • the collection area of the fingerprint identification module 3 is located in the display screen 11, and the collection area may include multiple collection blocks.
  • the acquisition area may include an acquisition block 31, an acquisition block 32, an acquisition block 33, an acquisition block 34, and an acquisition block 35.
  • an embodiment of the present application further provides a backlight module for under-screen fingerprint recognition.
  • the backlight module 20 is configured to transmit the infrared light signal emitted by the infrared light source 5 to the human finger to the fingerprint recognition module 3, and the infrared light signal is used to detect fingerprint information of the finger; wherein the backlight
  • the haze of the module 20 for the infrared light signal is smaller than the haze of the visible light used for image display.
  • the backlight module 20 may include: a diffusion layer 23, and a haze of the infrared light signal passing through the diffusion layer 23 is less than that of the visible light passing through the Haze at the time of the diffusion layer 23.
  • the transmittance of the infrared light signal when passing through the diffusion layer 23 is greater than the transmittance of the visible light when passing through the diffusion layer 23.
  • the backlight module 20 may include: a reflective layer 25, and the transmittance of the infrared light signal passing through the reflective layer 25 is greater than that of the visible light passing through the reflective layer 25.
  • the light transmittance of the reflective layer 25 is described.
  • the backlight module 20 may include: a steel plate 26, the steel plate 26 is formed with an opening 261, and the fingerprint recognition module 3 is disposed in the opening 261.
  • the fingerprint recognition module 3 is configured to receive the infrared light signal emitted by the infrared light source 5 after irradiating a human finger and passing through the opening 261.
  • An embodiment of the present application further provides an electronic device, and the electronic device may include an under-screen fingerprint recognition device described above.
  • the on-screen fingerprint recognition device 10 may further include a fingerprint recognition module 3
  • the electronic device may further include the backlight module described above, for example, as shown in FIG. 3 In the backlight module 20 shown, the fingerprint recognition module 3 is disposed below the backlight module 20.
  • An embodiment of the present application further provides an electronic device.
  • the electronic device may include the backlight module described above.
  • the electronic device may further include a fingerprint recognition module 3, an infrared light source 5, and a display screen 11.
  • the backlight module 20 and the infrared light source are both disposed below the display screen 11, and the fingerprint identification module 3 is disposed below the backlight module 20; the fingerprint identification module 3 is configured to receive The infrared light signal emitted by the infrared light source 5 after irradiating a human finger and passing through the backlight module 20 is used to detect fingerprint information of the finger.
  • the in-screen fingerprint recognition device 10 and the backlight module 20 of the embodiment of the present application have been described in detail above.
  • the specific fingerprint recognition method is performed. Instructions.
  • FIG. 14 is a schematic flowchart of a fingerprint identification method 200 according to an embodiment of the present application.
  • the method 200 may be performed by the mobile terminal 100 described in FIG. 1 or FIG. 2, or may be performed by the fingerprint identification device 10 shown in FIG. 3, or may be performed by the fingerprint identification module 3 in the fingerprint identification device 10.
  • the fingerprint identification device 10 is taken as an example below.
  • the fingerprint recognition device 10 or the terminal device 100 is triggered to execute the method 200, and the method 200 includes part or all of the following:
  • the collection area of the fingerprint recognition module 3 located in the display screen 11 may include multiple collection blocks.
  • the acquisition area may include an acquisition block 31, an acquisition block 32, an acquisition block 33, an acquisition block 34, and an acquisition block 35.
  • the fingerprint identification device 10 may determine whether to trigger the fingerprint identification module 3 based on whether the light intensity of the acquisition block 31, the acquisition block 32, the acquisition block 33, the acquisition block 34, and the acquisition block 35 meets a preset condition. Fingerprint collection operation.
  • the fingerprint recognition device 10 since it is only necessary to determine whether to trigger the fingerprint recognition device 10 to collect fingerprint data according to the light intensity in a partial area of the collection area, it can effectively reduce the workload of data processing and improve the fingerprint recognition. responding speed.
  • the fingerprint identification device 10 when the change amount of the light intensity is greater than or equal to a preset threshold, the fingerprint identification device 10 obtains the fingerprint information.
  • the preset threshold may be a preset light intensity change threshold.
  • the fingerprint identification device 10 when the intensity value of the light intensity is greater than or equal to a preset intensity threshold, the fingerprint identification device 10 obtains the fingerprint information.
  • intensity thresholds may be set in the different scenarios. For example, in a scene with strong ambient light (such as daylight), a larger intensity threshold can be set. For another example, in a scene with weak ambient light (such as night or cloudy), a smaller intensity threshold may be set.
  • strong ambient light such as daylight
  • weak ambient light such as night or cloudy
  • a smaller intensity threshold may be set.
  • the fingerprint identification device 10 when the intensity value or change amount of the light intensity belongs to a preset range, the fingerprint identification device 10 obtains the fingerprint information.
  • the preset threshold in the embodiment of the present application is a trigger threshold for the fingerprint recognition device 10 to perform a fingerprint recognition operation.
  • the preset threshold is merely an example, and the embodiment of the present application is not limited thereto.
  • the trigger threshold of the fingerprint recognition device may also be a threshold that is dynamically adjusted based on the preset threshold.
  • the light intensity is obtained through a photoelectric sensor.
  • the photosensor may be a photodiode (PD).
  • the fingerprint recognition device 10 before the fingerprint recognition device 10 obtains the light intensity of a collection block located in a collection area within a display screen, the fingerprint recognition device 10 obtains the infrared reflected by a human finger Light signal; when the infrared light signal is not within the detection range of the photosensor, the fingerprint recognition device 10 adjusts the detection range of the photosensor.
  • the range of the output signal of the photosensor is 0 to 1A.
  • the fingerprint recognition device 10 may adjust the range of the output signal of the photosensor to 0. ⁇ 100mA.
  • the detection accuracy of the photosensor can be effectively improved.
  • the photoelectric sensor is further configured to detect fingerprint information or heart rate information.
  • the embodiment of the present application only takes the fingerprint identification device 10 to acquire fingerprint information of the collection area as an example when the light intensity of the collection block meets a preset condition, and the embodiment of the present application is not limited thereto. For example, it may also be determined in combination with other conditions whether the fingerprint identification device 10 is triggered to acquire fingerprint information of the collection area. The following describes the implementation manner of the fingerprint identification device 10 in combination with other conditions to trigger the collection operation of fingerprint data.
  • the fingerprint recognition device 10 when the light intensity satisfies a preset condition and it is determined that the display screen is not blocked, the fingerprint recognition device 10 obtains the fingerprint information.
  • the fingerprint identification device 10 determines whether the display screen is blocked by an illumination sensor.
  • FIG. 15 is a schematic flowchart of a fingerprint identification method 300 according to an embodiment of the present application.
  • the method 300 may be performed by the mobile terminal 100 described in FIG. 1 or FIG. 2, or may be performed by the screen fingerprint recognition device 10 shown in FIG. 3, or may be performed by the fingerprint recognition module 3 in the fingerprint recognition device 10.
  • the fingerprint identification device 10 is taken as an example below.
  • the method 300 includes part or all of the following:
  • the on-screen fingerprint recognition device 10 initializes the fingerprint recognition module 20 to configure a collection block. Specifically, as shown in FIG. 13, the fingerprint dead module 20 may be initialized and configured with a collection block 31, a collection block 32, a collection block 33, a collection block 34, and a collection block 35.
  • the under-screen fingerprint recognition device 10 detects the light intensity of the collection block.
  • the on-screen fingerprint recognition device 10 determines whether a finger is pressed in the collection block.
  • the under-screen fingerprint recognition device 10 determines whether the display screen is blocked when it is determined that a finger is pressed in the collection block? In contrast, the under-screen fingerprint recognition device 10 executes 330 when it is determined that no finger is pressed on the collection block.
  • the under-screen fingerprint recognition device 10 starts to perform a fingerprint detection operation. In contrast, when the display screen is blocked, the under-screen fingerprint recognition device 10 executes 330.
  • the fingerprint recognition device 10 when the light intensity satisfies a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold, the fingerprint recognition device 10 obtains the fingerprint information.
  • a user when the light intensity meets a preset condition, a user generates a pressure value by pressing the display screen of the fingerprint collection area 130, and when the pressure value is greater than or equal to the pressure threshold, a fingerprint data collection operation is triggered, On the contrary, when the pressure value is less than the trigger threshold, the fingerprint data collection operation is not triggered.
  • the pressure threshold may be a preset threshold or a threshold determined by the fingerprint recognition device 10 before collecting fingerprint data.
  • the fingerprint identification device 10 may obtain a pressing force of a human finger pressing the collection block through a pressure sensor.
  • the pressure sensor includes, but is not limited to, a capacitive pressure sensor or a resistive pressure sensor.
  • Capacitive pressure sensors can also be called “pressure-capacitive” sensors.
  • the principle is shown in Figure 16.
  • pressure When pressure is applied to the electrode plate 312, the pressure changes the distance between the capacitors 321 between the two electrode plates 311 and 312. Thereby changing the magnitude of the capacitance. Different pressure values produce different capacitance value changes.
  • the change in the capacitance value is converted into an electrical signal.
  • the corresponding pressure can be detected by detecting the change in the signal by the detection chip.
  • a resistive pressure sensor can also be called a “piezoresistive” sensor.
  • the principle is shown in FIG. 17.
  • the resistive pressure sensor 332 is arranged on a force-bearing surface to be detected. As a result, the resistive pressure sensor 332 is squeezed or stretched, so that its resistance value changes accordingly. Different pressure values produce different resistance value changes, and the corresponding strength can be detected through the detection chip to detect the resistance value change.
  • the combination of four independent resistance pressure sensors into a bridge topology forms a bridge resistance pressure sensor, which can suppress temperature drift at the hardware level.
  • IN + represents the positive input of the data signal
  • IN- represents the negative input of the data signal
  • VDD represents the input voltage.
  • the fingerprint identification device 10 when the light intensity satisfies a preset condition and the object pressing the collection block is a living body, the fingerprint identification device 10 obtains the fingerprint information.
  • the heart rate information may be obtained through a living body detection unit; and whether the object pressing the collection block is determined according to the heart rate information For living.
  • FIG. 19 is a schematic diagram of an under-screen fingerprint recognition device having a living body detection unit according to an embodiment of the present application. As shown in FIG. 19, the under-screen fingerprint recognition device may include:
  • the fingerprint recognition module 3 may include a living body detection unit 36.
  • the living body detection unit 36 is configured to obtain heart rate information, and determine whether the object pressing the collection block is a living body according to the heart rate information.
  • the living body detection unit 36 may include at least one photoelectric sensor.
  • the under-screen fingerprint recognition device may further include:
  • a range adjustment unit 93 is configured to adjust a detection range of the photoelectric sensor.
  • the under-screen fingerprint recognition device may further include:
  • Amplifying filter circuit 91 and analog-to-digital conversion circuit 92 are identical to Amplifying filter circuit 91 and analog-to-digital conversion circuit 92.
  • the biological detection unit 36 After the biological detection unit 36 obtains an optical signal for carrying heart rate information, it converts the optical signal into an electrical signal and sends the electrical signal to the demodulation circuit 9, and the demodulation circuit The electric signal is demodulated and the demodulated electric signal is sent to the amplification and filtering circuit 91, and the demodulated electric signal is transmitted to the analog-to-digital conversion circuit 92 after passing through the amplification and filtering circuit 91, so that the analog-to-digital conversion circuit 92 sends the converted digital signal to the control processing unit 8, and the control processing unit 8 performs fingerprint recognition.
  • FIG. 20 is a schematic flowchart of a fingerprint recognition method 400 according to an embodiment of the present application.
  • the method 400 may be executed by the mobile terminal 100 described in FIG. 1 or FIG. 2, or may be executed by the under-screen fingerprint recognition device 10 shown in FIG. 3, or may be executed by the fingerprint recognition module 3 in the fingerprint recognition device 10.
  • the fingerprint identification device 10 is taken as an example below.
  • the method 400 includes part or all of the following:
  • the method 400 for identifying a fingerprint may include:
  • the on-screen fingerprint recognition device 10 initializes a fingerprint recognition module and a living body detection unit.
  • the under-screen fingerprint recognition device 10 obtains an infrared light signal reflected by a human finger.
  • the on-screen fingerprint recognition device 10 determines whether the infrared light signal is within a detection range of a photodiode (PD).
  • PD photodiode
  • the under-screen fingerprint recognition device 10 determines that the infrared light signal is not within the detection range of the PD, adjust the detection range of the PD.
  • the under-screen fingerprint recognition device 10 determines whether a finger is pressed.
  • the light intensity of the infrared light signal obtained by the under-screen fingerprint recognition device 10 satisfies a preset condition, it may be determined that a finger is pressed in the collection area of the display screen; otherwise, the No finger pressed in the acquisition area.
  • the under-screen fingerprint recognition device 10 determines whether the display screen is blocked?
  • the on-screen fingerprint recognition device 10 executes 430 when it determines that the display screen is blocked.
  • the under-screen fingerprint recognition device 10 determines whether the object pressing the display screen is a living body?
  • the under-screen fingerprint recognition device 10 determines that the object pressing the display screen is a living body, it starts to perform a fingerprint detection operation.
  • the on-screen fingerprint recognition device 10 executes 430 when it determines that the object pressing the display screen is not a living body.
  • the acquisition of the infrared light signal reflected by the human finger through the under-screen fingerprint recognition device 10 may be specifically performed by the living body detection unit 36 as shown in FIG. 20.
  • the living body detection unit 36 is further configured to determine whether the object pressing the display screen is a living body.
  • the embodiments of the present application are not limited to this.
  • the principle of combining the photoelectric sensor, pressure sensor, illuminance sensor, and living body detection unit to trigger the fingerprint recognition device 10 under the screen to acquire fingerprint information of the collection area is explained in detail above.
  • the on-screen fingerprint recognition device 10 is triggered by the combination of a photoelectric sensor, a pressure sensor, an illuminance sensor, and a living body detection unit to obtain fingerprint information of the collection area.
  • the under-screen fingerprint recognition device 10 is triggered to obtain the light intensity only when certain conditions are met.
  • the under-screen fingerprint recognition device 10 obtains the light intensity when it determines that the display interface of the display screen is a fingerprint verification interface.
  • the under-screen fingerprint recognition device 10 needs to determine whether the display interface of the display screen is fingerprint verification.
  • the on-screen fingerprint recognition device 10 determines that the display interface of the display screen is a fingerprint verification interface, it obtains the light intensity of the collection block located in the collection area within the display screen.
  • the fingerprint verification interface includes an identification of the collection area, so that a user is pressing the collection area in the display screen according to the identification.
  • the identification may be a fingerprint image or another form of image formed on the collection position in the display screen.
  • the display interface of the display screen is switched to the fingerprint verification interface.
  • the display interface of the display screen is switched to the fingerprint verification interface.
  • the process of switching the display interface to the fingerprint verification interface in the embodiments of the present application may be performed by the terminal device 100, the fingerprint recognition device 10, or the fingerprint recognition module in the fingerprint recognition device 10.
  • Group 3 executes, which is not specifically limited in the embodiment of the present application.
  • the living body detection unit 36 is only configured to determine whether a finger is pressed by acquiring an infrared light signal reflected by a human finger, that is, whether the light intensity of the infrared light signal meets a preset condition. That is, after 443, the living body detection unit 36 may not be used for living body recognition.
  • the under-screen fingerprint recognition device may further execute the first pressing sequence corresponding to the first pressing sequence and mapping relationship information of the human finger pressing the plurality of blocks.
  • the mapping relationship information includes a correspondence between at least one pressing sequence and at least one application, and the at least one pressing sequence includes the first pressing sequence.
  • the first pressing order in the embodiment of the present application may be the order in which a human finger presses the plurality of blocks, or the order in which another object (such as a stylus pen) presses the plurality of blocks. This embodiment of the present application does not specifically limit this.
  • FIG. 22 is a schematic flowchart of a method 500 for a fingerprint recognition apparatus to execute an application according to a first pressing sequence according to an embodiment of the present application.
  • the method 500 may be executed by the mobile terminal 100 described in FIG. 1 or FIG. 2, and may also be executed by the control processing unit 8 shown in FIG. 13 or FIG. 19.
  • the mobile terminal 100 is taken as an example below.
  • the method 500 includes part or all of the following:
  • the mobile terminal 100 initializes a fingerprint recognition module to configure multiple collection blocks.
  • the mobile terminal 100 determines a first pressing sequence of a human finger pressing the plurality of blocks.
  • the mobile terminal 100 determines whether the data is valid. In the embodiment of the present application, the mobile terminal 100 may determine whether the data is valid according to whether the light intensity of each collection block meets a preset condition. Specifically, if the light intensity of the collection block satisfies a preset condition, the data in the collection block is valid; if the light intensity of the collection block does not satisfy the preset condition, the data in the collection block is invalid.
  • the mobile terminal 100 determines a sliding direction according to the first pressing sequence.
  • the mobile terminal 100 starts executing a target application defined by a sliding direction.
  • a correspondence relationship between a sliding direction and an application may be preset. After the mobile terminal 100 determines the sliding direction, the application corresponding to the sliding direction may be directly executed.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not be applied to this application.
  • the implementation process of the examples constitutes any limitation.
  • FIG. 23 is a schematic block diagram of an under-screen fingerprint recognition device 600 according to an embodiment of the present application. As shown in FIG. 23, the under-screen fingerprint recognition device 600 may include:
  • An obtaining unit 610 where the obtaining unit 610 is configured to:
  • the fingerprint recognition unit 620 is configured to perform fingerprint recognition according to the fingerprint information.
  • the obtaining unit 610 is specifically configured to obtain the fingerprint information when a change amount of the light intensity is greater than or equal to a preset threshold.
  • the obtaining unit 610 is specifically configured to obtain the light intensity through a photoelectric sensor.
  • the under-screen fingerprint recognition device further includes a range adjustment unit, where the range adjustment unit is configured to:
  • the obtaining unit 610 obtains the light intensity, obtain an infrared light signal reflected by a human finger; when the infrared light signal is not within the detection range of the photoelectric sensor, adjust the detection range of the photoelectric sensor.
  • the photoelectric sensor is further configured to detect fingerprint information or heart rate information.
  • the obtaining unit 610 is specifically configured to obtain when the light intensity meets a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold.
  • the fingerprint information is specifically configured to obtain when the light intensity meets a preset condition and a pressing force with which a human finger presses the collection block is greater than or equal to a pressure threshold.
  • the on-screen fingerprint recognition device further includes: a pressure sensor, configured to obtain a human finger to press the collection block before the obtaining unit 610 obtains the fingerprint information. The degree of pressing.
  • the obtaining unit 610 is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and it is determined that the display screen is not blocked.
  • the under-screen fingerprint recognition device further includes: an illuminance sensor, configured to determine whether the display screen is blocked before the obtaining unit 610 obtains the fingerprint information.
  • the obtaining unit 610 is specifically configured to obtain the fingerprint information when the light intensity meets a preset condition and the object pressing the collection block is a living body.
  • the under-screen fingerprint recognition device further includes: a living body detection unit, where the living body detection unit is configured to:
  • the collection block includes a plurality of blocks.
  • the under-screen fingerprint recognition device 600 may further include:
  • An execution unit is configured to execute a target application corresponding to the first pressing order according to a first pressing order and mapping relationship information of the human finger pressing the multiple blocks, where the mapping relationship information includes at least one pressing order and For a correspondence relationship of at least one application, the at least one pressing sequence includes the first pressing sequence.
  • the obtaining unit 610 is specifically configured to:
  • the light intensity is obtained when it is determined that the display interface of the display screen is switched to a fingerprint verification interface, and the fingerprint verification interface includes an identification of the collection area.
  • the under-screen fingerprint recognition device 600 may further include:
  • the switching unit is configured to switch the display interface of the display screen to the fingerprint verification interface after a user presses a power key.
  • the under-screen fingerprint recognition device 600 may further include:
  • the switching unit is configured to switch a display interface of the display screen to the fingerprint verification interface after the user touches the display screen.
  • the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
  • the on-screen fingerprint recognition device 600 shown in FIG. 23 may correspond to a corresponding subject in the method for performing the embodiment of the present application, and the aforementioned and other operations and / or functions of each unit in the on-screen fingerprint recognition device 600 are respectively In order to implement the corresponding processes in the methods in FIG. 14, FIG. 15, and FIG. 20 to FIG. 22, for brevity, details are not described herein again.
  • the device for fingerprint identification in the embodiment of the present application is described above with reference to FIG. 23 from the perspective of a functional module. It should be understood that this functional module may be implemented in hardware, software instructions, or a combination of hardware and software modules.
  • each step of the method embodiments in the embodiments of the present application may be completed by hardware integrated logic circuits and / or software instructions in the processor, and the steps of the method disclosed in the embodiments of the present application may be directly embodied as hardware.
  • the execution of the decoding processor is completed, or a combination of hardware and software modules in the decoding processor is used for execution.
  • the software module may be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps in the foregoing method embodiment in combination with its hardware.
  • the obtaining unit 610 shown in FIG. 23 may be implemented by a fingerprint recognition module, and the fingerprint recognition unit 620 shown in FIG. 23 may be implemented by a processor.
  • FIG. 24 is a schematic structural diagram of an under-screen fingerprint recognition device 700 according to an embodiment of the present application.
  • the on-screen fingerprint recognition device 700 shown in FIG. 24 may include a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the under-screen fingerprint recognition device 700 may further include a memory 720.
  • the memory 720 may be used to store instruction information, and may also be used to store code, instructions, and the like executed by the processor 710.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the under-screen fingerprint recognition device 700 may further include a display screen 740 for displaying information to a user.
  • the on-screen fingerprint recognition device 700 may further include a fingerprint recognition module 730, and the fingerprint recognition module 730 may be used to obtain the light intensity of the collection block, where the light is stronger than a preset condition At this time, the fingerprint recognition module 730 obtains fingerprint information of the collection area, so that the processor 710 performs fingerprint recognition according to the fingerprint information.
  • the under-screen fingerprint recognition device 700 may correspond to the under-screen fingerprint recognition device 600 in the embodiment of the present application, and may correspond to the implementation of each method according to FIGS. 14, 15, 20 to 22 of the present application.
  • the corresponding subjects in the examples are not repeated here.
  • bus system includes a power bus, a control bus, and a status signal bus in addition to a data bus.
  • processor mentioned in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or Other programmable logic devices, transistor logic devices, discrete hardware components, and more.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrical memory Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • ROM read-only memory
  • PROM programmable read-only memory
  • EPROM erasable programmable read-only memory
  • EPROM electrical memory Erase programmable read-only memory
  • EEPROM electrical memory Erase programmable read-only memory
  • flash memory electrical memory Erase programmable read-only memory
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on.
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • SDRAM Synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM enhanced synchronous dynamic random access memory
  • synchronous connection Dynamic random access memory switch link DRAM, SLDRAM
  • Direct RAMbus RAM Direct RAMbus RAM, DR RAM
  • FIG. 25 is a schematic structural diagram of an electronic device (such as a touch screen mobile phone) 800 to which an embodiment of the present application is applied.
  • the electronic device 800 may include:
  • the processor 810 the memory 820, and the touch display screen 830.
  • the touch display screen 830 includes a pressure sensor 831.
  • the pressure sensor 831 is configured to sense a pressure of a touch input signal on the touch display screen 830.
  • the processor 810 is configured to receive a pressure signal induced by the pressure sensor 831 and to process the pressure signal, for example, to trigger an application program in the mobile terminal 100 based on the pressure signal.
  • the electronic device 800 may further include a fingerprint recognition module 880, which is used to obtain the light intensity of the collection block, and when the light intensity meets a preset condition Get the fingerprint information of the collection area.
  • a fingerprint recognition module 880 which is used to obtain the light intensity of the collection block, and when the light intensity meets a preset condition Get the fingerprint information of the collection area.
  • the electronic device 800 may further include an illuminance sensor 890, which is used to determine whether the touch display screen 830 is blocked.
  • the electronic device may further include other components, such as an audio circuit 840, a power source 850, a WiFi module 860, a radio frequency circuit 870, and other components as shown in FIG.
  • the power source 850 may include a visible light source and an infrared light source, wherein visible light emitted by the visible light source is used to display an image, and infrared light emitted by the infrared light source is used for fingerprint identification.
  • the technical solution of the embodiments of the present application is essentially a part that contributes to the existing technology or a part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium. , Including a plurality of 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 method described in the embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.
  • the division of units or modules or components in the device embodiments described above is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or modules or components may be combined or integrated. To another system, or some units or modules or components can be ignored or not implemented.
  • the above-mentioned units / modules / components described as separate / display components may or may not be physically separated, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units / modules / components can be selected according to actual needs to achieve the objectives of the embodiments of the present application.

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Abstract

提供了一种背光模组、屏下指纹识别方法、装置和电子设备,所述屏下指纹识别装置应用于具有背光模组的电子设备,所述屏下指纹识别装置包括:指纹识别模组,所述指纹识别模组设置在所述背光模组的下方,所述指纹识别模组用于接收红外光源发出的照射人体手指后并穿过所述背光模组的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息;其中,所述红外光信号穿过所述背光模组时的雾度小于用于显示图像的可见光穿过所述背光模组时的雾度。本申请实施例的屏下指纹识别装置能够有效实现被动发光显示屏的屏下指纹识别。

Description

背光模组、屏下指纹识别方法、装置和电子设备 技术领域
本发明实施例涉及屏下指纹识别领域,并且更具体地,涉及背光模组、屏下指纹识别方法、装置和电子设备。
背景技术
目前,屏下指纹识别主要应用于有机发光二极管(Organic Light-Emitting Diode,OLED)屏,其原理是:OLED屏下指纹识别模组利用OLED屏本身具备的透光特性,接收OLED屏自身发出的经过手指反射后形成的反射光检测指纹。
但是,由于液晶显示(Liquid Crystal Display,LCD)屏的发光原理和具体结构和OLED屏不同,因此,OLED屏下指纹识别方案并不适用LCD屏。
因此,如何实现LCD屏下光学指纹识别是本领域急需解决的技术难题。
发明内容
提供了一种背光模组、屏下指纹识别方法、装置和电子设备,所述背光模组、屏下指纹识别方法、装置和电子设备能够有效实现被动发光显示屏的屏下指纹识别。
第一方面,提供了一种屏下指纹识别装置,应用于具有背光模组的电子设备,所述屏下指纹识别装置包括:
指纹识别模组,所述指纹识别模组设置在所述背光模组的下方,所述指纹识别模组用于接收红外光源发出的照射人体手指后并穿过所述背光模组的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息;
其中,所述红外光信号穿过所述背光模组时的雾度小于用于显示图像的可见光穿过所述背光模组时的雾度。
在一些可能的实现方式中,所述红外光信号穿过所述背光模组时的透光率大于所述可见光穿过所述背光模组时的透光率。
在一些可能的实现方式中,所述红外光信号穿过所述背光模组的反射率小于对所述可见光穿过所述背光模组的反射率。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:可见光滤光 片,设置在所述背光模组和所述指纹识别模组之间。
在一些可能的实现方式中,所述屏下指纹识别装置包括:
至少一个所述红外光源,每个所述红外光源设置在所述显示屏的下方。
在一些可能的实现方式中,所述屏下指纹识别装置包括多个所述红外光源时,所述多个所述红外光源以所述指纹识别模组为中心对称设置,或者所述多个所述红外光源基于对称轴对称设置,所述对称轴为经过所述指纹识别模组的与所述显示屏平行的线。
在一些可能的实现方式中,所述红外光源平贴在所述显示屏的下表面,或者,所述红外光源斜贴在所述显示屏的下表面。
在一些可能的实现方式中,所述至少一个红外光源集成在所述背光模组内。
在一些可能的实现方式中,所述至少一个红外光源和所述背光模组内的用于显示图像的光源集成设置。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
控制处理单元、调制电路、驱动电路以及解调电路;
所述控制处理单元通过所述调制电路连接至所述红外光源,所述控制处理单元通过所述驱动电路连接至所述红外光源,所述指纹识别模组通过所述解调电路连接至所述控制处理单元;
所述处理控制单元用于控制所述调制电路对所述红外光信号进行调制,所述处理控制单元还用于控制所述驱动电路驱动所述红外光源发出所述红外光信号,所述解调电路用于解调所述指纹识别模组接收到的红外光信号并将解调后的红外光信号发送给所述控制处理单元。
在一些可能的实现方式中,所述指纹识别模组的采集区域位于所述显示屏内,所述采集区域包括多个采集区块;
所述指纹识别模组具体包括:获取单元和指纹识别单元;
所述获取单元用于:
获取位于显示屏内的采集区域中的采集区块的光强;
所述光强满足预设条件时,获取所述采集区域的指纹信息;
所述指纹识别单元用于根据所述指纹信息进行指纹识别。
在一些可能的实现方式中,所述获取单元具体用于:所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
在一些可能的实现方式中,所述获取单元具体用于:通过光电传感器获取所述光强。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:范围调整单元,所述范围调整单元用于:
在所述获取单元获取所述光强之前,获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
在一些可能的实现方式中,所述光电传感器还用于检测指纹信息或者心率信息。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:压力传感器,用于在所述获取单元获取所述指纹信息之前,获取人体手指按压所述采集区块的按压力度。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:照度传感器,用于在所述获取单元获取所述指纹信息之前,确定所述显示屏是否被遮挡。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:活体检测单元,所述活体检测单元用于:
在所述获取单元获取所述指纹信息之前,获取心率信息;
根据所述心率信息确定按压所述采集区块的物体是否为活体。
在一些可能的实现方式中,所述采集区块包括多个区块。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
执行单元,用于根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
在一些可能的实现方式中,所述获取单元具体用于:
确定所述显示屏的显示界面切换为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
切换单元,用于在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
切换单元,用于在用户触摸所述显示屏后,将所述显示屏的显示界面切换为所述指纹验证界面。
第二方面,提供了一种电子设备,包括:
第一方面以及第一方面中任一可能实现的方式中所述的屏下指纹识别装置,所述屏下指纹识别装置包括指纹识别模组;
背光模组,所述指纹识别模组设置在所述背光模组的下方。
在一些可能的实现方式中,所述背光模组包括:
扩散层,所述红外光信号穿过所述扩散层时的雾度小于所述可见光穿过所述扩散层时的雾度。
在一些可能的实现方式中,所述红外光信号穿过所述扩散层时的透光率大于所述可见光穿过所述扩散层时的透光率。
在一些可能的实现方式中,所述背光模组包括:
反射层,所述红外光信号穿过所述反射层的透光率大于对所述可见光穿过所述反射层的透光率。
在一些可能的实现方式中,所述背光模组包括:
钢板,所述钢板形成有开孔,所述指纹识别模组设置在所述开孔的下方,所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述开孔的所述红外光信号。
在一些可能的实现方式中,所述电子设备还包括:显示屏,所述屏下指纹识别装置设置在所述显示屏的下方。
第三方面,提供了一种用于屏下指纹识别的背光模组,所述背光模组用于将红外光源发出的照射人体手指后的红外光信号传输至指纹识别模组,所述红外光信号用于检测所述手指的指纹信息;
其中,所述背光模组对所述红外光信号的雾度小于对用于图像显示的可 见光的雾度。
在一些可能的实现方式中,所述背光模组包括:
扩散层,所述红外光信号穿过所述扩散层时的雾度小于所述可见光穿过所述扩散层时的雾度。
在一些可能的实现方式中,所述红外光信号穿过所述扩散层时的透光率大于所述可见光穿过所述扩散层时的透光率。
在一些可能的实现方式中,所述背光模组包括:反射层,所述红外光信号穿过所述反射层的透光率大于对所述可见光穿过所述反射层的透光率。
在一些可能的实现方式中,所述背光模组包括:钢板,所述钢板形成有开孔,所述指纹识别模组设置在所述开孔的下方,所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述开孔的所述红外光信号。
第四方面,提供了一种电子设备,包括:
第三方面以及第三方面任一可能的实现方式中所述的背光模组。
在一些可能的实现方式中,所述电子设备还包括:
指纹识别模组、红外光源和显示屏;
所述背光模组和所述红外光源均设置在所述显示屏的下方,所述指纹识别模组设置在所述背光模组的下方;
所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述背光模组的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息。
第五方面,提供了一种识别指纹的方法,包括:
获取位于显示屏内的采集区域中的采集区块的光强;
所述光强满足预设条件时,获取所述采集区域的指纹信息;
根据所述指纹信息进行指纹识别。
在一些可能的实现方式中,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
在一些可能的实现方式中,所述获取位于显示屏内的采集区域中的采集区块的光强,包括:
通过光电传感器获取所述光强。
在一些可能的实现方式中,所述获取位于显示屏内的采集区域中的采集 区块的光强之前,所述方法还包括:
获取经由人体手指反射的红外光信号;
所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
在一些可能的实现方式中,所述光电传感器还用于检测指纹信息或者心率信息。
在一些可能的实现方式中,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
在一些可能的实现方式中,所述获取所述指纹信息之前,所述方法还包括:
通过压力传感器获取人体手指按压所述采集区块的按压力度。
在一些可能的实现方式中,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
在一些可能的实现方式中,所述获取所述指纹信息之前,所述方法还包括:
通过照度传感器确定所述显示屏是否被遮挡。
在一些可能的实现方式中,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
在一些可能的实现方式中,所述获取所述指纹信息之前,所述方法还包括:
通过活体检测单元获取心率信息;
根据所述心率信息确定按压所述采集区块的物体是否为活体。
在一些可能的实现方式中,所述采集区块包括多个区块。
在一些可能的实现方式中,所述方法还包括:
根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息, 执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
在一些可能的实现方式中,所述获取位于显示屏内的采集区域中的采集区块的光强,包括:
确定所述显示屏的显示界面为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
在一些可能的实现方式中,所述方法还包括:
在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
在一些可能的实现方式中,所述方法还包括:
在用户触摸所述显示屏后,所述显示屏的显示界面切换为所述指纹验证界面。
第六方面,提供了一种屏下指纹识别装置,包括:
获取单元,所述获取单元用于:
获取位于显示屏内的采集区域中的采集区块的光强;
所述光强满足预设条件时,获取所述采集区域的指纹信息;
指纹识别单元,用于根据所述指纹信息进行指纹识别。
在一些可能的实现方式中,所述获取单元具体用于:所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
在一些可能的实现方式中,所述获取单元具体用于:通过光电传感器获取所述光强。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:范围调整单元,所述范围调整单元用于:
在所述获取单元获取所述光强之前,获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
在一些可能的实现方式中,所述光电传感器还用于检测指纹信息或者心率信息。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取 所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:压力传感器,用于在所述获取单元获取所述指纹信息之前,获取人体手指按压所述采集区块的按压力度。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:照度传感器,用于在所述获取单元获取所述指纹信息之前,确定所述显示屏是否被遮挡。
在一些可能的实现方式中,所述获取单元具体用于:所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:活体检测单元,所述活体检测单元用于:
在所述获取单元获取所述指纹信息之前,获取心率信息;
根据所述心率信息确定按压所述采集区块的物体是否为活体。
在一些可能的实现方式中,所述采集区块包括多个区块。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
执行单元,用于根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
在一些可能的实现方式中,所述获取单元具体用于:
确定所述显示屏的显示界面切换为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
切换单元,用于在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
在一些可能的实现方式中,所述屏下指纹识别装置还包括:
切换单元,用于在用户触摸所述显示屏后,将所述显示屏的显示界面切换为所述指纹验证界面。
第七方面,提供了一种电子设备,包括:
第六方面以及第六方面中任一可能实现的方式中所述的屏下指纹识别 装置。
在一些可能的实现方式中,所述电子设备还包括:显示屏,所述屏下指纹识别装置设置在所述显示屏的下方。
基于以上技术方案,本申请实施例能够实现被动显示屏的屏下指纹识别。具体地,由此,本申请实施例中,用于指纹识别的光信号采用的是红外光源发出的红外光信号,用于显示图像的光信号采用的是可见光源发出的可见光信号。本申请实施例的屏下指纹识别装置,不仅能够避开可见光对指纹识别的干扰,而且红外光信号为不可见光,不会对显示的图像产生影响。此外,由于所述红外光信号穿过所述背光模组时的雾度小于用于显示图像的可见光穿过所述背光模组时的雾度,不仅能够实现对可见光信号的调制,而且能够有效降低所述红外光信号在光路传输中的损耗。
进一步地,本申请实施例中,通过对所述背光模组中的扩散膜、反射膜以及钢板的光学特性进行了设计,能够有效降低用于指纹识别的红外光信号在穿过所述背光模组时的能量损耗,进而提高了屏下指纹识别的效率。
更进一步地,本申请实施例中,屏下指纹识别装置根据位于显示屏内的采集区块中的部分区域的光强,确定是否触发指纹识别模组采集所述采集区域的指纹信息,能够有效提高指纹识别的响应速度。
附图说明
图1是本申请可以适用的移动终端的平面示意图。
图2是图1所示的移动终端沿A’-A’的部分剖面示意图。
图3是本申请实施例的屏下指纹识别装置的示意性结构图。
图4是本申请实施例的扩散板的雾度的光学特性示意图。
图5是本申请实施例的扩散板的透过率的光学特性示意图。
图6是本申请实施例的反射板的光学特性示意图。
图7至图10是本申请实施例的红外光源的布置方式的示意图。
图11和图12是本申请实施例的红外光源和显示屏之间的贴合方式的示意图。
图13是本申请实施例的屏下指纹识别装置的另一示意性结构图。
图14和图15是本申请实施例的屏下指纹识别方法的示意性流程图。
图16至图18是本申请实施例的压力传感器的示意图。
图19是本申请实施例的屏下指纹识别装置的再一示意性结构图。
图20和图21是本申请实施例的屏下指纹识别方法的另一示意性流程图。
图22是本申请实施例的应用操作方法的示意性流程图。
图23是本申请实施例的屏下指纹识别装置的再一示意性结构图。
图24是本申请实施例的屏下指纹识别装置的再一示意性结构图。
图25是本申请实施例的电子设备的示意性结构图。
具体实施方式
随着智能终端步入全面屏时代,电子设备正面指纹采集区域受到全面屏的挤压,因此屏下(Under-display或者Under-screen)指纹识别技术越来越受到关注。屏下指纹识别技术是指将屏下指纹识别装置(比如指纹识别模组)安装在显示屏下方,从而实现在显示屏的显示区域内部进行指纹识别操作,不需要在电子设备正面除显示区域外的区域设置指纹采集区域。
屏下指纹识别技术可以包括屏下光学指纹识别技术、屏下超声波指纹识别技术或者其他类型的屏下指纹识别技术。
以屏下光学指纹识别技术为例,屏下光学指纹识别技术使用从设备显示组件的顶面返回的光来进行指纹感应和其他感应操作。所述返回的光携带与所述顶面接触的物体(例如手指)的信息,通过捕获和检测所述返回的光实现位于显示屏幕下方的特定光学传感器模块。所述特定光学传感器模块的设计可以为通过恰当地配置用于捕获和检测返回的光的光学元件来实现期望的光学成像。
应理解,本申请实施例的技术方案可以应用于各种电子设备,更具体地,可以应用于具有显示屏的电子设备。例如智能手机、笔记本电脑、平板电脑、游戏设备等便携式或移动计算设备,以及电子数据库、汽车、银行自动柜员机(Automated Teller Machine,ATM)等其他电子设备,但本申请实施例对此并不限定。
还应理解,本申请实施例的技术方案除了可以进行指纹识别外,还可以进行其他指纹识别,例如,活体识别等,本申请实施例对此也不限定。
下面将结合附图,对本申请实施例中的技术方案进行描述。
需要说明的是,为便于说明,在本申请的实施例中,相同的附图标记表 示相同的部件,并且为了简洁,在不同实施例中,省略对相同部件的详细说明。
应理解,附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸,以及屏下指纹识别装置的整体厚度、长宽等尺寸仅为示例性说明,而不应对本申请构成任何限定。
图1和图2示出了屏下指纹识别装置可以适用的移动终端100的示意图,其中图1为屏下指纹识别装置可以适用的移动终端100的正面示意图,图2是图1所示的移动终端100沿A’-A’的部分剖面结构示意图。
如图1和图2所示,移动终端100可以包括显示屏11和屏下指纹识别装置10,其中,所述显示屏11具有显示区域102,所述屏下指纹识别装置10设置在所述显示屏11的下方。
可选地,在本申请的一些实施例中,所述显示屏11可以为自发光显示屏,其采用具有自发光显示单元的作为显示像素。比如显示屏11可以为有机发光二极管(Organic Light-Emitting Diode,OLED)显示屏或者微型发光二极管(Micro-LED)显示屏。在其他替代实施例中,显示屏11也可以为液晶显示屏(Liquid Crystal Display,LCD)或者其他被动发光显示屏,本申请实施例对此不做限制。
可选地,在本申请的一些实施例中,所述显示屏11具体可以为触控显示屏,其不仅可以进行画面显示,还可以检测用户的触摸或者按压操作,从而为用户提供一个人机交互界面。比如,在一种实施例中,所述移动终端100可以包括触摸传感器,所述触摸传感器可以具体为触控面板(Touch Panel,TP),其可以设置在所述显示屏11表面,也可以部分集成或者整体集成到所述显示屏11内部,从而形成所述触控显示屏。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10可以为光学屏下指纹识别装置,其可以包括具有光学感应阵列的光学指纹传感器,比如光学指纹传感器;所述光学感应阵列包括多个光学感应单元,且所述光学感应阵列的所在区域为所述屏下指纹识别装置10的指纹采集区域,所述多个光学感应单元用于采集用户的指纹特征信息(比如指纹图像信息)。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10的光学感应阵列具体可以为光探测器(Photo detector)阵列(或称为光电探测器阵列),其包括多个呈阵列式分布的光探测器或光电探测器,所述光探测器或 光电探测器可以作为如上所述的光学感应单元。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10可以至少设置在显示屏11下方的局部区域,从而使得所述屏下指纹识别装置10的指纹采集区域(或感应区域)至少部分位于所述显示屏11的显示区域102内。
如图1所示,所述指纹采集区域130位于所述显示屏11的显示区域102之中。由此,用户在需要对所述电子设备进行解锁或者其他指纹验证的时候,只需要将手指按压在位于所述显示屏11的指纹采集区域130,便可以实现指纹的输入操作。
具体地,当手指触摸、按压或者接近(为便于描述,本申请统称为按压)在所述指纹采集区域130时,所述指纹采集区域130的显示单元发出的光线在手指发生反射并形成反射光,其中所述反射光可以携带有用户手指的指纹特征信息。比如,所述光线在用户手指表面的指纹发生反射之后,由于手指指纹的纹脊和纹谷的反射光是不同的,因此反射光便携带有用户的指纹信息。所述反射光返回所述显示屏11并被其下方的屏下指纹识别装置10的光探测器阵列所接收并且转换为相应的电信号,即指纹检测信号。所述移动终端100基于所述指纹检测信号便可以获得用户的指纹信息,并且可以进一步进行指纹匹配验证,从而完成当前用户的身份验证以便于确认其是否有权限对所述移动终端100进行相应的操作。
由于指纹采集可以在所述显示屏11的显示区域102内部实现,采用上述结构的移动终端100无需其正面专门预留空间来设置指纹按键(比如Home键),因而可以采用全面屏方案,即所述显示屏11的显示区域102可以基本扩展到所述移动终端100的整个正面。
应当理解,图1所示的指纹采集区域130仅为示例,本申请实施例不限于此。例如在其他替代实施例中,所述屏下指纹识别装置10也可以设置在所述显示屏11下方的整个区域,从而将所述指纹采集区域130扩展到整个所述显示屏11的整个显示区域102,实现全屏指纹识别。
还应当理解,在具体实现上,所述移动终端100还可以包括保护盖板110,所述保护盖板110可以具体为透明盖板,比如玻璃盖板或者蓝宝石盖板,其位于所述显示屏11的上方并覆盖所述移动终端100的正面,且所述保护盖板110表面还可以设置有保护层。因此,本申请实施例中,所谓的手 指按压所述显示屏11可以实际上可以是指手指按压在所述显示屏11上方的盖板110或者覆盖所述盖板110的保护层表面。
进一步地,该指纹识别装置10的下方还可以设置有电路板150,比如软性电路板(Flexible Printed Circuit,FPC),该指纹识别装置10可以通过焊盘焊接到该电路板150,并通过该电路板150实现与其他外围电路或者该终端设备100的其他元件的电性互连和信号传输。比如,该指纹识别装置10可以通过该电路板150接收该终端设备100的处理单来的控制信号,并且还可以通过该电路板150将该指纹检测信号输出给该终端设备100的处理单元或者控制单元等。
需要注意的是,在屏下指纹识别过程中,以显示屏11采用OLED显示屏为例,所述显示屏11具有呈阵列式排布的OLED显示单元,所述屏下指纹识别装置10可以利用所述OLED显示屏11位于所述指纹采集区域130的OLED显示单元(即OLED光源)来作为指纹检测识别的激励光源。
而当显示屏11采用非自发光显示屏时,比如液晶显示屏或者其他的被动发光显示屏,需要采用背光模组作为显示屏11的光源。但是,由于背光模组的光学特性导致背光模组发出的可见光经过图像显示后,人体手指能够反射的光信号非常微弱,因此,指纹识别装置10能够接收到的光信号无法实现指纹识别。
此外,由于背光模组的光学特性,使得经由人体手指反射后的光信号在传输至指纹识别装置10的过程中,能量损耗非常大,进而导致无法实现指纹识别。即OLED屏下指纹识别方案并不适用LCD屏。
本申请实施例提供了一种屏下指纹识别装置,能够实现LCD屏下光学指纹识别。
图3是本申请实施例的屏下指纹识别装置的示意性结构图。
如图3所示,屏下指纹识别装置10可应用于具有背光模组20和显示屏11的电子设备,所述屏下指纹识别装置10可以包括:
指纹识别模组3,所述背光模组20设置在所述显示屏11的下方;所述指纹识别模组3设置在所述背光模组20的下方;所述指纹识别模组3用于接收红外光源5发出的照射人体手指后并穿过所述背光模组20的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息;其中,所述红外光信号穿过所述背光模组20时的雾度小于用于显示图像的可见光穿过所述背 光模组20时的雾度。
应理解,本申请实施例中,所述指纹识别模组3接收到的用于进行指纹识别的红外光信号可以是人体手指对红外光源发出的红外光信号的进行光学处理的光信号。例如,所述指纹识别模组3接收到的光信号可以是进行经由人体手指反射并穿过所述背光模组20的所述红外光信号,也可以经由人体手指漫射并穿过所述背光模组20的所述红外光信号。本申请实施例对此不做具体限定。
需要说明的是,本申请实施例中,所述红外光源5发出的红外光信号可以用于进行指纹识别,所述红外光信号是不可见光。
而用于所述显示屏11进行图像显示的光信号为可见光源,具体地,所述可见光源可以是位于液晶显示器(LCD)背后的任一种光源。例如,所述可见光源可以是电致发光(EL)背光源、小型冷阴极荧光灯(CCFL)或者LED背光源。
综上所述,本申请实施例的屏下指纹识别装置10,用于指纹识别的光信号采用的是红外光源5发出的红外光信号,用于显示图像的光信号采用的是可见光源发出的可见光信号。因此,本申请实施例的屏下指纹识别装置10不仅能够避开可见光对指纹识别的干扰,而且红外光信号为不可见光,不会对显示图像产生影响。
此外,由于所述红外光信号穿过所述背光模组20时的雾度小于用于显示图像的可见光穿过所述背光模组20时的雾度,不仅能够实现对可见光信号的调制,而且能够有效降低所述红外光信号在光路传输中的损耗。
可选地,在本申请的一些实施例中,所述红外光信号穿过所述背光模组时的透光率大于所述可见光穿过所述背光模组时的透光率。
可选地,在本申请的一些实施例中,所述红外光信号穿过所述背光模组的反射率小于对所述可见光穿过所述背光模组的反射率。
可选地,在本申请的一些实施例中,所述红外光源5可以固定在所述显示屏11的下方,所述指纹识别模组3也可以固定在所述显示屏11的下方。
例如,如图3所示,所述红外光源5可以通过光学胶4粘贴在所述显示屏11的下方。类似地,所述指纹识别模组3也可以通过机械方式固定在所述显示屏11的下方。例如,所述指纹识别模组3可以通过螺纹连接的方式固定在所述显示屏11的下方。
可选地,在本申请的一些实施例中,所述光学胶4可以是任一种光学液态胶或者光学固态胶。
可选地,在本申请的一些实施例中,所述光学胶4和所述显示屏11的光学折射率相同或者近似,由此,能够尽可能的提高所述红外光源5发出的红外光信号的利用率。
可选地,在本申请的一些实施例中,所述至少一个红外光源5集成在所述背光模组20内。
可选地,在本申请的一些实施例中,所述至少一个红外光源5和所述背光模组20内的用于显示图像的光源集成设置。例如,所述至少一个红外光源5和所述背光模组20内的用于显示图像的光源集成并列集成设置。
在其他可替代实施例中,所述至少一个红外光源5和所述背光模组20内的用于显示图像的光源也可以通过非并列的方式集成设置。本申请实施例对此不做具体限定。
可选地,在本申请的一些实施例中,如图3所示,所述背光模组20可以包括复合膜21、增光膜22、扩散膜23、导光板(light guide plate)24、反射膜25以及钢板26。
具体地,可见光源发出的可见光经过导光板24之后传输至扩散膜23,经过所述扩散膜23扩散后的光线传输至所述增光膜22,所述增光膜22用于增益接收到的光信号,并将增益后的光信号发送至复合膜21,所述复合膜21接收到光信号用于进一步增益接收到的光信号,并将增益后的光信号传输至显示屏11,用于进行图像显示。
应理解,图3所示的背光模组20仅为示例,本申请实施例不限于此。例如,在其他可替代实施例中,所述背光模组20可以不包括钢板26和/或反射膜25。
本申请实施例中,所述导光板24可以利用具有极高反射率且不吸光的高科技材料,在光学级的亚克力板材底面用激光雕刻技术或者紫外线(Ultra-Violet Ray,UV)网版印刷技术等技术印上导光点。利用光学级亚克力板材吸取从灯发出来的光在光学级亚克力板材表面的停留,当光线射到各个导光点时,反射光会往各个角度扩散,然后破坏反射条件由导光板正面射出。
所述导光板24的作用在于引导光的散射方向,用来提高面板的亮度, 并确保面板亮度的均匀性。具体地,可见光源可以位于导光板24的侧边,其发出的光利用反射导入导光板24的内部,当光线射到扩散点时,反射光会往各个角度扩散,然后由导光板24的正面射出。
可选地,在本申请的一些实施例中,可以利用各种疏密、大小不一的扩散点,使得导光板24均匀发光。
可选地,在本申请的一些实施例中,如图4所示,所述红外光信号穿过所述扩散层23时的雾度小于用于显示图像的可见光穿过所述扩散层23时的雾度。
可选地,在本申请的一些实施例中,如图5所示,所述红外光信号穿过所述扩散层23时的透光率大于所述可见光穿过所述扩散层23时的透光率。
本申请实施例中,所述扩散板23不仅能够提高显示屏11的正面的亮度,使得可见光的分布更加均匀,进而保证用户从正面不会看到反射点。而且,由于所述红外光信号穿过所述扩散层23时的雾度小于用于显示图像的可见光穿过所述扩散层23时的雾度,且所述红外光信号穿过所述扩散层23时的透光率大于所述可见光穿过所述扩散层23时的透光率,能够有效降低所述红外光信号在光路传输中的损耗。
进一步地,由于扩散板23射出的光信号的指向性非常差,本申请实施例中,通过增光膜22能够有效修正可见光信号的方向,达到聚光的效果,提高显示屏11的正面的亮度。
可选地,在本申请的一些实施例中,所述增光膜22可以放置在扩散层23和显示屏11之间。
可选地,在本申请的一些实施例中,增光膜22可以通过棱镜膜的实现。
所述棱镜膜可以通过改善用于显示图像的可见光信号的角分布,将从扩散片23射出的均匀地向各个角度发散的光汇聚到轴向角度上,也就是正视角度上,即在不增加出射总光通量的情况下提高轴向亮度。
换句话说,所述棱镜膜可以对入射的光线进行选择,让符合汇聚光角度的光线通过,而不符合条件的光线被反射回扩散片23,重新在扩散片23中扩散后再回到棱镜膜,直到符合出射条件为止。
可选地,在本申请的一些实施例中,增光膜22可通过反射偏振片实现。
所述反射偏振片与棱镜不同,反射偏振片可以根据对可见光信号的偏振方向的不同进行选择的循环增亮,所述反射偏振片能够精确的将平行其光轴 方向的偏振光100%的反射,而另外一个正交方向上的偏振光可以正常穿透所述反射偏振片。
本申请实施例中的反射板25在图像显示中的作用在于将导光板24的底面露出的光反射回导光板中,用来提高光的使用效率。
可选地,在本申请的一些实施例中,如图6所示,所述红外光信号穿过所述反射层25的透光率大于对所述可见光穿过所述反射层25的透光率。
本申请实施例中,由于所述红外光信号穿过所述反射层25的透光率大于对所述可见光穿过所述反射层25的透光率,使得所述反射层25不仅能够提高光的使用效率,而且能够降低所述反射层25对所述红外光信号在传输路径中的损耗,提高指纹识别质量。
可选地,在本申请的一些实施例中,如图3所示,所述钢板26形成有开孔261,所述指纹识别模组3设置在所述开孔261的下方,所述指纹识别模组3用于接收所述红外光源5发出的照射人体手指后并穿过所述开孔261的所述红外光信号。
可以发现,本申请实施例中,通过在所述钢板26上形成所述开孔261,能够尽可能的阻止可见光信号向与显示屏11相反的方向传输,并避免所述背光模组20由于外部冲击造成损坏,而且能够有效降低用于指纹识别的红外光信号在经过所述钢板26时的能量损耗。
进一步地,如图3所示,所述屏下指纹识别装置10还包括可见光滤光片6,所述可见光滤光片6可以设置在所述背光模组20和所述指纹识别模组3之间。由此,可以对传输至可见光滤光片6处的可见光进行滤除,能够进一步提高指纹识别模组3的识别质量。
本申请实施例中,所述可见光滤光片6具体可以用于过滤掉可见光波长,例如,用于图像显示的可见光等。所述滤光片109具体地可以包括一个或多个光学过滤器,所述一个或多个光学过滤器可以配置为例如带通过滤器,以滤除可见光光源发射的光,同时不滤除红外光信号。所述一个或多个光学过滤器可以实现为例如光学过滤涂层,该光学过滤涂层形成在一个或多个连续界面上,或可以实现为一个或多个离散的界面上。
应理解,所述可见光滤光片6可以制作在任何光学部件的表面上,或者沿着到经由手指反射形成的反射光至指纹识别模组3的光学路径上。图3仅以所述可见光滤光片6设置在钢板26和指纹识别模组3之间为例,但本申 请不限于此。例如,所述可见光滤光片6可以贴合在包括显示屏11底面、钢板26的上方或所述指纹识别模组3的内部等。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10包括:
至少一个所述红外光源5,每个所述红外光源5设置在所述显示屏的下方。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10包括多个所述红外光源5时,所述多个所述红外光源5以所述指纹识别模组3为中心对称设置,或者所述多个所述红外光源基于对称轴对称设置,所述对称轴为经过所述指纹识别模组3的与所述显示屏11平行的线。
例如,如图7所示,所述屏下指纹识别装置10可以包括两个所述红外光源5,所述两个红外光源5与所述指纹识别模组3在显示屏11上形成的投影为等腰三角形。
又例如,如图8所示,所述屏下指纹识别装置10可以包括三个所述红外光源5,所述三个红外光源5与所述指纹识别模组3在显示屏11上形成的投影为等腰三角形,其中,所述三个红外光源5均设置在所述等腰三角形的底边上且对称设置。
又例如,如图9所示,所述屏下指纹识别装置10可以包括四个所述红外光源5,所述四个红外光源5在显示屏11上形成的投影为长方形,且所述指纹识别模组3位于所述长方形的中心。
又例如,如图10所示,所述屏下指纹识别装置10可以包括带状光源,所述带状光源可以包括多个所述红外光源5,所述多个红外光源5与所述指纹识别模组3在显示屏11上形成的投影为等腰三角形,其中,所述多个红外光源5均设置在所述等腰三角形的底边上且对称设置。
可选地,在本申请的一些实施例中,如图11所示,所述红外光源5斜贴在所述显示屏11的下表面。本申请实施例中,通过将所述红外光源5斜贴在所述显示屏11的下表面,能够有效提高所述红外光源5发出的红外光信号在指纹识别过程中的利用率。
可选地,在本申请的一些实施例中,如图11所示,所述红外光源5平贴在所述显示屏11的下表面。本申请实施例中,通过将所述红外光源5平贴在所述显示屏11的下表面能够有效简化贴合工艺,进而提高产品组装过程中的良率。
本申请实施例中,红外光源5发出的红外光信号用于进行指纹识别,但是由于环境中的自然光也存在红外光,因此,很有可能环境中的红外光也会传输到指纹识别模组3中,导致指纹识别模组3接收的部分红外光信号可能没有携带指纹信息,进而降低指纹识别模组3的识别效率。
图13是本申请实施例的屏下指纹识别装置的另一示意性框图。
如图13所示,所述屏下指纹识别装置10还可以包括:
控制处理单元8、调制电路7、驱动电路6以及解调电路9;
具体地,所述控制处理单元8通过所述调制电路7连接至所述红外光源5,所述控制处理单元8通过所述驱动电路6连接至所述红外光源5,所述指纹识别模组3通过所述解调电路9连接至所述控制处理单元8;所述处理控制单元8用于控制所述调制电路7对所述红外光信号进行调制,所述处理控制单元8还用于控制所述驱动电路6驱动所述红外光源5发出所述红外光信号,所述解调电路9用于解调所述指纹识别模组3接收到的红外光信号并将解调后的红外光信号发送给所述控制处理单元8。
本申请实施例中,通过对调制电路7对红外光源5进行调制,使得所述红外光源5发出的红外光信号区别于环境中的红外光信号。具体地,所述红外光源5可以采用某个特定的调制频率进行开启或关闭的操作,由于环境中的光线绝大部分可视为频率非常小的或频率变化非常缓慢的光信号,采用调制的方法可以很好的屏蔽环境中强光的影响。相应的,由于红外光源5发出的光线具备特定的频率,因此,所述指纹识别模组3采集的信号也包含相关调制频率,本申请实施例中可以通过解调电路9将信号还原后发送至控制处理单元8,以便于所述控制处理单元8进行指纹识别。
可选地,在本申请的一些实施例中,所述指纹识别模组3的采集区域位于所述显示屏11内,所述采集区域可以包括多个采集区块。
例如,如图13所示,所述采集区域可以包括采集区块31、采集区块32、采集区块33、采集区块34以及采集区块35。
基于上述描述,本申请实施例还提供了一种用于屏下指纹识别的背光模组。例如,如图3所示的背光模组20。所述背光模组20用于将红外光源5发出的照射人体手指后的红外光信号传输至指纹识别模组3,所述红外光信号用于检测所述手指的指纹信息;其中,所述背光模组20对所述红外光信号的雾度小于对用于图像显示的可见光的雾度。
可选地,在本申请的一些实施例中,所述背光模组20可以包括:扩散层23,所述红外光信号穿过所述扩散层23时的雾度小于所述可见光穿过所述扩散层23时的雾度。
可选地,在本申请的一些实施例中,所述红外光信号穿过所述扩散层23时的透光率大于所述可见光穿过所述扩散层23时的透光率。
可选地,在本申请的一些实施例中,所述背光模组20可以包括:反射层25,所述红外光信号穿过所述反射层25的透光率大于对所述可见光穿过所述反射层25的透光率。
可选地,在本申请的一些实施例中,所述背光模组20可以包括:钢板26,所述钢板26形成有开孔261,所述指纹识别模组3设置在所述开孔261的下方,所述指纹识别模组3用于接收所述红外光源5发出的照射人体手指后并穿过所述开孔261的所述红外光信号。
应理解,本申请实施例中的背光模组20的具体光学特性可以参考图3相应的描述,为了简洁,在此不再赘述。
本申请实施例还提供了一种电子设备,所述电子设备可以包括上文所述的屏下指纹识别装置。例如,如图3所示的屏下指纹识别装置10。可选地,在本申请的一些实施例中,屏下指纹识别装置10还可以包括指纹识别模组3,所述电子设备还可以包括:上文所述的背光模组,例如,如图3所示的背光模组20,所述指纹识别模3设置在所述背光模组20的下方。
本申请实施例还提供了一种电子设备,所述电子设备可以包括上文所述的背光模组。例如,如图3所示的背光模组20。进一步地,如图3所示,所述电子设备还可以包括:指纹识别模组3、红外光源5和显示屏11。所述背光模组20和所述红外光源均设置在所述显示屏11的下方,所述指纹识别模组3设置在所述背光模组20的下方;所述指纹识别模组3用于接收所述红外光源5发出的照射人体手指后并穿过所述背光模组20的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息。
上面对本申请实施例的屏下指纹识别装置10和背光模组20进行了详细的说明,下面结合基于指纹识别模组的所述采集区域包括多个采集区块时,其具体地指纹识别方法进行说明。
图14是本申请实施例的识别指纹的方法200的示意性流程图。该方法200可以由图1或图2所述的移动终端100执行,也可以由图3所示的指纹 识别装置10执行,也可以由指纹识别装置10中的指纹识别模组3执行。为便于描述,下文以所述指纹识别装置10为例。可选地,在用户初始化指纹识别模组3之后触发所述指纹识别装置10或者所述终端设备100执行所述方法200,所述方法200包括以下部分或全部内容:
210,获取位于显示屏内的采集区域中的采集区块的光强。
220,所述光强满足预设条件时,获取所述采集区域的指纹信息。
230,根据所述指纹信息进行指纹识别。
具体而言,在用户初始化指纹识别模组3过程中,所述指纹识别模组3的位于所述显示屏11内的采集区域可以包括多个采集区块。例如,如图13所示,所述采集区域可以包括采集区块31、采集区块32、采集区块33、采集区块34以及采集区块35。所述指纹识别装置10可以基于采集区块31、采集区块32、采集区块33、采集区块34以及采集区块35的光强是否满足预设条件,确定是否触发指纹识别模组3进行指纹采集操作。
本申请实施例中,由于只需要根据所述采集区域的部分区域中的光强,确定是否触发所述指纹识别装置10进行指纹数据的采集,能够有效降低数据处理的工作量,提高指纹识别的响应速度。
可选地,在本申请的一些实施例中,所述光强的变化量大于或等于预设阈值时,所述指纹识别装置10获取所述指纹信息。例如,所述预设阈值可以为预设光强变化阈值。
可选地,在本申请的一些实施例中,所述光强的强度值大于或者等于预设的强度阈值时,所述指纹识别装置10获取所述指纹信息。
进一步地,所述不同场景下可以设置有不同的强度阈值。例如,在环境光较强的场景下(例如白天),可以设置较大的强度阈值。又例如,在环境光较弱的场景下(例如黑夜或者阴天),可以设置较小的强度阈值。通过上述技术方案,可以有效提高采用光强的强度值触发指纹识别装置10获取所述指纹信息的准确度。
可选地,在本申请的一些实施例中,所述光强的强度值或者变化量属于预设范围时,所述指纹识别装置10获取所述指纹信息。
应理解,本申请实施例的预设阈值为所述指纹识别装置10进行指纹识别操作的触发阈值。所述预设阈值仅为示例,本申请实施例不限于此。例如,在其他可替代实施例中,该指纹识别装置的触发阈值也可以是基于所述预设 阈值动态调整后的阈值。
可选地,在本申请的一些实施例中,通过光电传感器获取所述光强。例如,所述光电传感器可以是光电二极管(PD)。
可选地,在本申请的一些实施例中,所述指纹识别装置10获取位于显示屏内的采集区域中的采集区块的光强之前,所述指纹识别装置10获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,所述指纹识别装置10调整所述光电传感器的检测范围。
例如,所述光电传感器的输出信号的范围为0~1A,当所述光电传感器接收到的光信号较弱时,所述指纹识别装置10可以将所述光电传感器的输出信号的范围调整为0~100mA。本申请实施例中,通过调整所述光电传感器的检测范围,能够有效提高光电传感器的检测精度。
可选地,在本申请的一些实施例中,所述光电传感器还用于检测指纹信息或者心率信息。
应理解,本申请实施例仅以采集区块的光强满足预设条件时触发所述指纹识别装置10获取采集区域的指纹信息为例,本申请实施例不限于此。例如,还可以结合其它条件确定是否触发所述指纹识别装置10获取所述采集区域的指纹信息。下面基于所述指纹识别装置10结合其它条件触发指纹数据的采集操作的实现方式进行说明。
可选地,在本申请的一些实施例中,所述光强满足预设条件且确定所述显示屏未被遮挡时,所述指纹识别装置10获取所述指纹信息。
可选地,在本申请的一些实施例中,所述指纹识别装置10获取所述指纹信息之前,所述指纹识别装置10通过照度传感器确定所述显示屏是否被遮挡。
图15是本申请实施例的识别指纹的方法300的示意性流程图。该方法300可以由图1或图2所述的移动终端100执行,也可以由图3所示的屏下指纹识别装置10执行,也可以由指纹识别装置10中的指纹识别模组3执行。为便于描述,下文以所述指纹识别装置10为例。如图15所示,所述方法300包括以下部分或全部内容:
310,开始。
320,屏下指纹识别装置10初始化指纹识别模组20,以配置采集区块。具体地,可以如图13所示,将所述指纹死别模组20初始化,配置采集区块 31、采集区块32、采集区块33、采集区块34以及采集区块35。
330,屏下指纹识别装置10检测所述采集区块的光强。
340,屏下指纹识别装置10判断所述采集区块是否有手指按下?
350,屏下指纹识别装置10在确定所述采集区块有手指按下时,判断显示屏是否被遮挡?相反,所述屏下指纹识别装置10确定所述采集区块未有手指按下时执行330。
360,所述显示屏未被遮挡时,屏下指纹识别装置10开始执行指纹检测操作。相反,所述显示屏被遮挡时,所述屏下指纹识别装置10执行330。
370,结束。
可选地,在本申请的一些实施例中,所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,所述指纹识别装置10获取所述指纹信息。
具体地,在所述光强满足预设条件的情况下,用户会通过按压指纹采集区域130的显示屏产生压力值,该压力值大于或等于所述压力阈值时,触发指纹数据的采集操作,相反,所述压力值小于所述触发阈值时,不触发指纹数据的采集操作。
换句话说,用户在需要对该终端设备100进行解锁或者其他指纹验证的时候,为了能够保证获取到的指纹数据的质量,需要通过一个压力阈值来控制是否触发指纹数据的采集操作。
进一步地,所述压力阈值可以是预设阈值,也可以是指纹识别装置10在采集指纹数据之前确定出的阈值。
可选地,在本申请的一些实施例中,所述指纹识别装置10获取所述指纹信息之前,所述指纹识别装置10可以通过压力传感器获取人体手指按压所述采集区块的按压力度。所述压力传感器包括但不限于:电容式压力传感器或电阻式压力传感器。
电容式压力传感器也可以称为“压容式”传感器,其原理如图16所示,当压力施加在极板312上时,该压力使得两极板311和312之间的电容器321的间距发生改变从而改变电容值的大小。不同大小的压力产生不同的电容值变化,将该电容值的变化量转换成电信号,通过检测芯片测得该信号的变化即可检测出相应压力的大小。
电阻式压力传感器也可以称为“压阻式”传感器,其原理如图17所示, 将电阻式压力传感器332布置在某个待检测受力面上,受力承载体331受力产生形变,从而挤压或者拉伸电阻式压力传感器332,从而使其阻值发生相应变化。不同压力大小产生不同的阻值变化,通过检测芯片检测该阻值变化即能够检测出相应力度大小。
如图18所示,将四个独立的电阻式压力传感器组合成电桥式拓扑即形成电桥式电阻压力传感器,其能够抑制硬件级别的温度漂移。其中,IN+表示数据信号的正输入,IN-表示数据信号的负输入,VDD表示输入电压。
在实际应用中,由于单个压力传感器通常比较小,为了尽可能精确地感应到来自触摸显示屏各个位置的压力,通常需要以阵列的形式放置多个压力传感器,这些多个压力传感器构成压力传感器阵列。
可选地,在本申请的一些实施例中,所述光强满足预设条件且按压所述采集区块的物体为活体时,所述指纹识别装置10获取所述指纹信息。
可选地,在本申请的一些实施例中,所述指纹识别装置10获取所述指纹信息之前,可以通过活体检测单元获取心率信息;根据所述心率信息确定按压所述采集区块的物体是否为活体。
图19是本申请实施例的具有活体检测单元的屏下指纹识别装置的示意性图。如图19所示,所述屏下指纹识别装置可以包括:
指纹识别模组3,所述指纹识别模组3可以包括活体检测单元36。所述活体检测单元36用于获取心率信息,并根据所述心率信息确定按压所述采集区块的物体是否为活体。
具体地,所述活体检测单元36可以包括至少一个光电传感器。
进一步地,如图19所示,所述屏下指纹识别装置还可以包括:
范围调整单元93,所述范围调整单元93用于调整所述光电传感器的检测范围。
进一步地,如图19所示,所述屏下指纹识别装置还可以包括:
放大滤波电路91和模数转换电路92。
所述生物检测单元36获取到用于携带有心率信息的光信号后,将所述光信号转换成电信号并将所述电信号发送至所述解调电路9,所述解调电路对所述电信号进行解调并将解调后的电信号发送至放大滤波电路91,所述解调后的电信号经过放大滤波电路91后传输至模数转换电路92,以便所述模数转换电路92将转换后的数字信号发送至控制处理单元8,有所述控制处理 单元8进行指纹识别。
图20是本申请实施例的识别指纹的方法400的示意性流程图。该方法400可以由图1或图2所述的移动终端100执行,也可以由图3所示的屏下指纹识别装置10执行,也可以由指纹识别装置10中的指纹识别模组3执行。为便于描述,下文以所述指纹识别装置10为例。如图20所示,所述方法400包括以下部分或全部内容:
如图20所示,用于识别指纹的方法400可以包括:
410,开始。
420,屏下指纹识别装置10初始化指纹识别模组及活体检测单元。
430,屏下指纹识别装置10获取经由人体手指反射的红外光信号。
440,屏下指纹识别装置10确定所述红外光信号是否在光电二极管(PD)的检测范围内。
441,屏下指纹识别装置10确定所述红外光信号不在PD的检测范围内时,调整PD的检测范围。
442,屏下指纹识别装置10确定所述红外光信号在PD的检测范围内时,屏下指纹识别装置10判断手指是否按下。在本申请实施例的430中,屏下指纹识别装置10获取的所述红外光信号的光强满足预设条件时,可以确定显示屏的采集区域内有手指按下,否则,确定显示屏的采集区域内没有手指按下。
443,屏下指纹识别装置10判断显示屏是否被遮挡?
444,屏下指纹识别装置10判断显示屏未被遮挡时通过活体检测单元获取心率信息。相反,屏下指纹识别装置10判断显示屏被遮挡时执行430。
445,屏下指纹识别装置10判断按压显示屏的物体是否为活体?
446,屏下指纹识别装置10确定按压显示屏的物体为活体时开始执行指纹检测操作。相反,屏下指纹识别装置10判断按压显示屏的物体不是活体时执行430。
447,结束。
应理解,在图20所示的识别指纹的方法400中,屏下指纹识别装置10获取经由人体手指反射的红外光信号可以具体由如图活体检测单元36执行。并进一步的,所述活体检测单元36还用于判断按压显示屏的物体是否为活体。但本申请实施例不限于此。
需要说明的是,上文详细说明了结合光电传感器、压力传感器、照度传感器以及活体检测单元触发屏下指纹识别装置10获取采集区域的指纹信息的原理。可选地,在本申请的一些实施例中,满足一定条件时,结合光电传感器、压力传感器、照度传感器以及活体检测单元触发屏下指纹识别装置10获取采集区域的指纹信息。换句话说,本申请实施例中,满足一定条件时,才触发所述屏下指纹识别装置10获取所述光强。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置10确定所述显示屏的显示界面为指纹验证界面时获取所述光强。
具体地,所述屏下指纹识别装置10获取位于显示屏内的采集区域中的采集区块的光强之前,所述屏下指纹识别装置10需要确定所述显示屏的显示界面是否为指纹验证界面,所述屏下指纹识别装置10确定所述显示屏的显示界面为指纹验证界面时,获取位于所述显示屏内的所述采集区域中的所述采集区块的光强。
所述指纹验证界面包括所述采集区域的标识,以便用户在根据所述标识在按压所述显示屏内的所述采集区域。例如,所述标识可以是在所述显示屏内的所述采集位置上形成的指纹图像或者其他形式的图像。所述显示屏的显示界面为指纹验证界面时,可以引导用户进行指纹采集。
可选地,在本申请的一些实施例中,在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
可选地,在本申请的一些实施例中,在用户触摸所述显示屏后,所述显示屏的显示界面切换为所述指纹验证界面。
应理解,本申请实施例中的所述显示界面切换为所述指纹验证界面的过程可以由终端设备100执行,也可以由指纹识别装置10执行,也可以由指纹识别装置10中的指纹识别模组3执行,本申请实施例对此不做具体限定。
例如,如图21所示,所述活体检测单元36只用于通过获取经由人体手指反射的红外光信号确定手指是否按下,即所述红外光信号的光强是否满足预设条件。即在443之后所述活体检测单元36可以不用于进行活体识别。
可选地,在本申请的一些实施例中,屏下指纹识别装置还可以根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。应理 解,本申请实施例的第一按压顺序可以是人体手指按压所述多个区块的顺序,也可以是其它物体(例如触控笔)按压所述多个区块的顺序。本申请实施例对此不做具体限定。
图22是本申请实施例的指纹识别装置根据第一按压顺序执行应用的方法500的示意性流程图。该方法500可以由图1或图2所述的移动终端100执行,也可以由图13或图19所示的控制处理单元8执行,为便于描述,下文以所述移动终端100为例。如图22所示,所述方法500包括以下部分或全部内容:
510,开始。
520,移动终端100初始化指纹识别模组,以配置多个采集区块。
530,移动终端100确定人体手指按压所述多个区块的第一按压顺序。
540,移动终端100判断数据是否有效。本申请实施例中,移动终端100可以根据每个采集区块的光强是否满足预设条件判断数据是否有效。具体地,若采集区块的光强满足预设条件,则该采集区块中的数据有效;若采集区块的光强不满足预设条件,则该采集区块中的数据无效。
550,移动终端100根据所述第一按压顺序,确定滑动方向。
560,移动终端100开始执行滑动方向所定义的目标应用。本申请实施例中,可以预设设置滑动方向和应用的对应关系,移动终端100确定滑动方向后,可以直接执行该滑动方向对应的应用。
570,结束。
以上结合附图详细描述了本申请的优选实施方式,但是,本申请并不限于上述实施方式中的具体细节,在本申请的技术构思范围内,可以对本申请的技术方案进行多种简单变型,这些简单变型均属于本申请的保护范围。
例如,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本申请对各种可能的组合方式不再另行说明。
又例如,本申请的各种不同的实施方式之间也可以进行任意组合,只要其不违背本申请的思想,其同样应当视为本申请所公开的内容。
还应理解,在本申请的各种方法实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
上文详细描述了本申请的方法实施例,下文结合图23至图25,详细描述本申请的装置实施例。
图23是本申请实施例的屏下指纹识别装置600的示意性框图。如图23所示,所述屏下指纹识别装置600可以包括:
获取单元610,所述获取单元610用于:
获取位于显示屏内的采集区域中的采集区块的光强;所述光强满足预设条件时,获取所述采集区域的指纹信息。
指纹识别单元620,用于根据所述指纹信息进行指纹识别。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:通过光电传感器获取所述光强。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置还包括:范围调整单元,所述范围调整单元用于:
在所述获取单元610获取所述光强之前,获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
可选地,在本申请的一些实施例中,所述光电传感器还用于检测指纹信息或者心率信息。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置还包括:压力传感器,用于在所述获取单元610获取所述指纹信息之前,获取人体手指按压所述采集区块的按压力度。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置还包括:照度传感器,用于在所述获取单元610获取所述指纹信息之前,确定所述显示屏是否被遮挡。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:所述 光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置还包括:活体检测单元,所述活体检测单元用于:
在所述获取单元610获取所述指纹信息之前,获取心率信息;
根据所述心率信息确定按压所述采集区块的物体是否为活体。
可选地,在本申请的一些实施例中,所述采集区块包括多个区块。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置600还可以包括:
执行单元,用于根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
可选地,在本申请的一些实施例中,所述获取单元610具体用于:
确定所述显示屏的显示界面切换为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置600还可以包括:
切换单元,用于在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
可选地,在本申请的一些实施例中,所述屏下指纹识别装置600还可以包括:
切换单元,用于在用户触摸所述显示屏后,将所述显示屏的显示界面切换为所述指纹验证界面。
应理解,装置实施例与方法实施例可以相互对应,类似的描述可以参照方法实施例。具体地,图23所示的屏下指纹识别装置600可以对应于执行本申请实施例的方法中的相应主体,并且屏下指纹识别装置600中的各个单元的前述和其它操作和/或功能分别为了实现图14、图15、图20至图22中的各个方法中的相应流程,为了简洁,在此不再赘述。
上文中结合图23从功能模块的角度描述了本申请实施例的用于指纹识别的装置。应理解,该功能模块可以通过硬件形式实现,也可以通过软件形 式的指令实现,还可以通过硬件和软件模块组合实现。
具体地,本申请实施例中的方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路和/或软件形式的指令完成,结合本申请实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。
可选地,软件模块可以位于随机存储器,闪存、只读存储器、可编程只读存储器、电可擦写可编程存储器、寄存器等本领域的成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法实施例中的步骤。
例如,本申请实施例中,图23所示的获取单元610可以由指纹识别模组实现,图23所示的指纹识别单元620可由处理器实现。
图24是本申请实施例的屏下指纹识别装置700示意性结构图。图24所示的屏下指纹识别装置700可以包括处理器710,处理器710可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图24所示,屏下指纹识别装置700还可以包括存储器720。该存储器720可以用于存储指示信息,还可以用于存储处理器710执行的代码、指令等。其中,处理器710可以从存储器720中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
可选地,如图24所示,屏下指纹识别装置700还可以包括显示屏740,用于向用户显示信息。
可选地,如图24所示,屏下指纹识别装置700还可以包括指纹识别模组730,指纹识别模组730可以用于获取采集区块的光强,在所述光强大于预设条件时,所述指纹识别模组730获取采集区域的指纹信息,以便所述处理器710根据所述指纹信息,进行指纹识别。
可选地,屏下指纹识别装置700可对应于本申请实施例中的屏下指纹识别装置600,并可以对应于执行根据本申请图14、图15、图20至图22中的各个方法实施例中的相应主体,为了简洁,在此不再赘述。
应当理解,屏下指纹识别装置700中的各个组件通过总线系统相连,其中,总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号 总线。
还应理解,本申请实施例中提及的处理器可能是一种集成电路芯片,具有信号的处理能力,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。
例如,上述的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件等等。此外,通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
此外,本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。
其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。
图25是本申请实施例应用于的一种电子设备(例如触摸屏手机)800的结构示意图。如图25所示,电子设备800可以包括:
处理器810、存储器820与触摸显示屏830。
触摸显示屏830中包括压力传感器831,压力传感器831用于感应触摸显示屏830上的触摸输入信号的压力大小。处理器810用于接收压力传感器831感应的压力信号,并用于处理该压力信号,例如基于该压力信号触发该移动终端100中的某个应用程序。
可选地,如图25所示,电子设备800还可以包括指纹识别模组880,所述指纹识别模组880用于获取采集区块的光强,以及在所述光强满足预设条件时获取采集区域的指纹信息。
可选地,如图25所示,电子设备800还可以包括照度传感器890,所述照度传感器890用于确定触摸显示屏830是否被遮挡。
可选地,该电子设备还可以包括其他部件,如图1所示的音频电路840、电源850、WiFi模块860和射频电路870等其部件。应理解,所述电源850可以包括可见光源和红外光源,其中,所述可见光源发出的可见光用于显示图像,所述红外光源发出的红外光用于指纹识别。
需要说明的是,在本申请实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本申请实施例。
例如,在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”、“上述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。
所属领域的技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请实施例的范围。
如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的设备、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请提供的几个实施例中,应该理解到,所揭露的电子设备、装置 和方法,可以通过其它的方式实现。
例如,以上所描述的装置实施例中单元或模块或组件的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如,多个单元或模块或组件可以结合或者可以集成到另一个系统,或一些单元或模块或组件可以忽略,或不执行。
又例如,上述作为分离/显示部件说明的单元/模块/组件可以是或者也可以不是物理上分开的,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元/模块/组件来实现本申请实施例的目的。
最后,需要说明的是,上文中显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
以上内容,仅为本申请实施例的具体实施方式,但本申请实施例的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请实施例的保护范围之内。因此,本申请实施例的保护范围应以权利要求的保护范围为准。

Claims (73)

  1. 一种屏下指纹识别装置,其特征在于,应用于具有背光模组的电子设备,所述屏下指纹识别装置包括:
    指纹识别模组,所述指纹识别模组设置在所述背光模组的下方,所述指纹识别模组用于接收红外光源发出的照射人体手指后并穿过所述背光模组的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息;
    其中,所述红外光信号穿过所述背光模组时的雾度小于用于显示图像的可见光穿过所述背光模组时的雾度。
  2. 根据权利要求1所述的屏下指纹识别装置,其特征在于,所述红外光信号穿过所述背光模组时的透光率大于所述可见光穿过所述背光模组时的透光率。
  3. 根据权利要求1或2所述的屏下指纹识别装置,其特征在于,所述红外光信号穿过所述背光模组的反射率小于对所述可见光穿过所述背光模组的反射率。
  4. 根据权利要求1至3中任一项所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:可见光滤光片,设置在所述背光模组和所述指纹识别模组之间。
  5. 根据权利要求1至4中任一项所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置包括:
    至少一个所述红外光源,每个所述红外光源设置在所述显示屏的下方。
  6. 根据权利要求5所述的屏下指纹识别装置,其特征在于,所述至少一个红外光源集成在所述背光模组内。
  7. 根据权利要求5所述的屏下指纹识别装置,其特征在于,所述至少一个红外光源和所述背光模组内的用于显示图像的光源集成设置。
  8. 根据权利要求5所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置包括多个所述红外光源时,所述多个所述红外光源以所述指纹识别模组为中心对称设置,或者所述多个所述红外光源基于对称轴对称设置,所述对称轴为经过所述指纹识别模组的与所述显示屏平行的线。
  9. 根据权利要求5所述的屏下指纹识别装置,其特征在于,所述红外光源平贴在所述显示屏的下表面,或者,所述红外光源斜贴在所述显示屏的下 表面。
  10. 根据权利要求1至9中任一项所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    控制处理单元、调制电路、驱动电路以及解调电路;
    所述控制处理单元通过所述调制电路连接至所述红外光源,所述控制处理单元通过所述驱动电路连接至所述红外光源,所述指纹识别模组通过所述解调电路连接至所述控制处理单元;
    所述处理控制单元用于控制所述调制电路对所述红外光信号进行调制,所述处理控制单元还用于控制所述驱动电路驱动所述红外光源发出所述红外光信号,所述解调电路用于解调所述指纹识别模组接收到的红外光信号并将解调后的红外光信号发送给所述控制处理单元。
  11. 根据权利要求10所述的屏下指纹识别装置,其特征在于,所述指纹识别模组的采集区域位于所述显示屏内,所述采集区域包括多个采集区块;
    所述指纹识别模组具体包括:获取单元和指纹识别单元;
    所述获取单元用于:
    获取位于显示屏内的采集区域中的采集区块的光强;
    所述光强满足预设条件时,获取所述采集区域的指纹信息;
    所述指纹识别单元用于根据所述指纹信息进行指纹识别。
  12. 根据权利要求11所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
  13. 根据权利要求11或12所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:通过光电传感器获取所述光强。
  14. 根据权利要求13所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:范围调整单元,所述范围调整单元用于:
    在所述获取单元获取所述光强之前,获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
  15. 根据权利要求13所述的屏下指纹识别装置,其特征在于,所述光电传感器还用于检测指纹信息或者心率信息。
  16. 根据权利要求11至15中任一项所述的屏下指纹识别装置,其特征 在于,所述获取单元具体用于:所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
  17. 根据权利要求16所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:压力传感器,用于在所述获取单元获取所述指纹信息之前,获取人体手指按压所述采集区块的按压力度。
  18. 根据权利要求11至15中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
  19. 根据权利要求18所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:照度传感器,用于在所述获取单元获取所述指纹信息之前,确定所述显示屏是否被遮挡。
  20. 根据权利要求11至15中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
  21. 根据权利要求20所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:活体检测单元,所述活体检测单元用于:
    在所述获取单元获取所述指纹信息之前,获取心率信息;
    根据所述心率信息确定按压所述采集区块的物体是否为活体。
  22. 根据权利要求11至21中任一项所述的屏下指纹识别装置,其特征在于,所述采集区块包括多个区块。
  23. 根据权利要求22所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    执行单元,用于根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
  24. 根据权利要求11至23中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:
    确定所述显示屏的显示界面切换为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
  25. 根据权利要求24所述的屏下指纹识别装置,其特征在于,所述屏下 指纹识别装置还包括:
    切换单元,用于在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
  26. 根据权利要求24所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    切换单元,用于在用户触摸所述显示屏后,将所述显示屏的显示界面切换为所述指纹验证界面。
  27. 一种电子设备,其特征在于,包括:
    权利要求1至26中任一项所述的屏下指纹识别装置,所述屏下指纹识别装置包括指纹识别模组;
    背光模组,所述指纹识别模组设置在所述背光模组的下方。
  28. 根据权利要求27所述的电子设备,其特征在于,所述背光模组包括:
    扩散层,所述红外光信号穿过所述扩散层时的雾度小于所述可见光穿过所述扩散层时的雾度。
  29. 根据权利要求27或28所述的电子设备,其特征在于,所述红外光信号穿过所述扩散层时的透光率大于所述可见光穿过所述扩散层时的透光率。
  30. 根据权利要求27至29中任一项所述的电子设备,其特征在于,所述背光模组包括:
    反射层,所述红外光信号穿过所述反射层的透光率大于对所述可见光穿过所述反射层的透光率。
  31. 根据权利要求27至30中任一项所述的电子设备,其特征在于,所述背光模组包括:
    钢板,所述钢板形成有开孔,所述指纹识别模组设置在所述开孔的下方,所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述开孔的所述红外光信号。
  32. 根据权利要求27至31中任一项所述的电子设备,其特征在于,所述电子设备还包括:
    显示屏,所述屏下指纹识别装置设置在所述显示屏的下方。
  33. 一种用于屏下指纹识别的背光模组,其特征在于,
    所述背光模组用于将红外光源发出的照射人体手指后的红外光信号传 输至指纹识别模组,所述红外光信号用于检测所述手指的指纹信息;
    其中,所述背光模组对所述红外光信号的雾度小于对用于图像显示的可见光的雾度。
  34. 根据权利要求33所述的背光模组,其特征在于,所述背光模组包括:
    扩散层,所述红外光信号穿过所述扩散层时的雾度小于所述可见光穿过所述扩散层时的雾度。
  35. 根据权利要求34所述的背光模组,其特征在于,所述红外光信号穿过所述扩散层时的透光率大于所述可见光穿过所述扩散层时的透光率。
  36. 根据权利要求33至35中任一项所述的背光模组,其特征在于,所述背光模组包括:
    反射层,所述红外光信号穿过所述反射层的透光率大于对所述可见光穿过所述反射层的透光率。
  37. 根据权利要求33至36中任一项所述的背光模组,其特征在于,所述背光模组包括:
    钢板,所述钢板形成有开孔,所述指纹识别模组设置在所述开孔的下方,所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述开孔的所述红外光信号。
  38. 一种电子设备,其特征在于,包括:
    权利要求33至37中任一项所述的背光模组。
  39. 根据权利要求38所述的电子设备,其特征在于,所述电子设备还包括:
    指纹识别模组、红外光源和显示屏;
    所述背光模组和所述红外光源均设置在所述显示屏的下方,所述指纹识别模组设置在所述背光模组的下方;
    所述指纹识别模组用于接收所述红外光源发出的照射人体手指后并穿过所述背光模组的所述红外光信号,所述红外光信号用于检测所述手指的指纹信息。
  40. 一种识别指纹的方法,其特征在于,包括:
    获取位于显示屏内的采集区域中的采集区块的光强;
    所述光强满足预设条件时,获取所述采集区域的指纹信息;
    根据所述指纹信息进行指纹识别。
  41. 根据权利要求40所述的方法,其特征在于,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
    所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
  42. 根据权利要求40或41所述的方法,其特征在于,所述获取位于显示屏内的采集区域中的采集区块的光强,包括:
    通过光电传感器获取所述光强。
  43. 根据权利要求42所述的方法,其特征在于,所述获取位于显示屏内的采集区域中的采集区块的光强之前,所述方法还包括:
    获取经由人体手指反射的红外光信号;
    所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
  44. 根据权利要求42所述的方法,其特征在于,所述光电传感器还用于检测指纹信息或者心率信息。
  45. 根据权利要求40至44中任一项所述的方法,其特征在于,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
    所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
  46. 根据权利要求45所述的方法,其特征在于,所述获取所述指纹信息之前,所述方法还包括:
    通过压力传感器获取人体手指按压所述采集区块的按压力度。
  47. 根据权利要求40至44中任一项所述的方法,其特征在于,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
    所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
  48. 根据权利要求47所述的方法,其特征在于,所述获取所述指纹信息之前,所述方法还包括:
    通过照度传感器确定所述显示屏是否被遮挡。
  49. 根据权利要求40至44中任一项所述的方法,其特征在于,所述光强满足预设条件时,获取所述采集区域的指纹信息,包括:
    所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
  50. 根据权利要求49所述的方法,其特征在于,所述获取所述指纹信息之前,所述方法还包括:
    通过活体检测单元获取心率信息;
    根据所述心率信息确定按压所述采集区块的物体是否为活体。
  51. 根据权利要求40至50中任一项所述的方法,其特征在于,所述采集区块包括多个区块。
  52. 根据权利要求51所述的方法,其特征在于,所述方法还包括:
    根据所述人体手指按压所述多个区块的第一按压顺序和映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
  53. 根据权利要求40至52中任一项所述的方法,其特征在于,所述获取位于显示屏内的采集区域中的采集区块的光强,包括:
    确定所述显示屏的显示界面为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
  54. 根据权利要求53所述的方法,其特征在于,所述方法还包括:
    在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
  55. 根据权利要求53所述的方法,其特征在于,所述方法还包括:
    在用户触摸所述显示屏后,所述显示屏的显示界面切换为所述指纹验证界面。
  56. 一种屏下指纹识别装置,其特征在于,包括:
    获取单元,所述获取单元用于:
    获取位于显示屏内的采集区域中的采集区块的光强;
    所述光强满足预设条件时,获取所述采集区域的指纹信息;
    指纹识别单元,用于根据所述指纹信息进行指纹识别。
  57. 根据权利要求56所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强的变化量大于或等于预设阈值时,获取所述指纹信息。
  58. 根据权利要求56或57所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:通过光电传感器获取所述光强。
  59. 根据权利要求58所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:范围调整单元,所述范围调整单元用于:
    在所述获取单元获取所述光强之前,获取经由人体手指反射的红外光信号;所述红外光信号不在所述光电传感器的检测范围内时,调整所述光电传感器的检测范围。
  60. 根据权利要求58所述的屏下指纹识别装置,其特征在于,所述光电传感器还用于检测指纹信息或者心率信息。
  61. 根据权利要求56至60中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强满足预设条件且人体手指按压所述采集区块的按压力度大于或等于压力阈值时,获取所述指纹信息。
  62. 根据权利要求61所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:压力传感器,用于在所述获取单元获取所述指纹信息之前,获取人体手指按压所述采集区块的按压力度。
  63. 根据权利要求56至60中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强满足预设条件且确定所述显示屏未被遮挡时,获取所述指纹信息。
  64. 根据权利要求63所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:照度传感器,用于在所述获取单元获取所述指纹信息之前,确定所述显示屏是否被遮挡。
  65. 根据权利要求56至60中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:所述光强满足预设条件且按压所述采集区块的物体为活体时,获取所述指纹信息。
  66. 根据权利要求65所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:活体检测单元,所述活体检测单元用于:
    在所述获取单元获取所述指纹信息之前,获取心率信息;
    根据所述心率信息确定按压所述采集区块的物体是否为活体。
  67. 根据权利要求56至60中任一项所述的屏下指纹识别装置,其特征在于,所述采集区块包括多个区块。
  68. 根据权利要求67所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    执行单元,用于根据所述人体手指按压所述多个区块的第一按压顺序和 映射关系信息,执行所述第一按压顺序对应的目标应用,所述映射关系信息包括至少一个按压顺序和至少一个应用的对应关系,所述至少一个按压顺序包括所述第一按压顺序。
  69. 根据权利要求56至68中任一项所述的屏下指纹识别装置,其特征在于,所述获取单元具体用于:
    确定所述显示屏的显示界面切换为指纹验证界面时获取所述光强,所述指纹验证界面包括所述采集区域的标识。
  70. 根据权利要求69所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    切换单元,用于在用户按压电源键后,所述显示屏的显示界面切换为所述指纹验证界面。
  71. 根据权利要求69所述的屏下指纹识别装置,其特征在于,所述屏下指纹识别装置还包括:
    切换单元,用于在用户触摸所述显示屏后,将所述显示屏的显示界面切换为所述指纹验证界面。
  72. 一种电子设备,其特征在于,包括:
    权利要求56至71中任一项所述的屏下指纹识别装置。
  73. 根据权利要求72所述的电子设备,其特征在于,所述电子设备还包括:显示屏,所述屏下指纹识别装置设置在所述显示屏的下方。
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