WO2020073166A1 - 指纹识别方法、装置和终端设备 - Google Patents

指纹识别方法、装置和终端设备 Download PDF

Info

Publication number
WO2020073166A1
WO2020073166A1 PCT/CN2018/109331 CN2018109331W WO2020073166A1 WO 2020073166 A1 WO2020073166 A1 WO 2020073166A1 CN 2018109331 W CN2018109331 W CN 2018109331W WO 2020073166 A1 WO2020073166 A1 WO 2020073166A1
Authority
WO
WIPO (PCT)
Prior art keywords
fingerprint
display screen
finger
distance
terminal device
Prior art date
Application number
PCT/CN2018/109331
Other languages
English (en)
French (fr)
Inventor
乔胜强
罗记成
谭胤
Original Assignee
深圳市汇顶科技股份有限公司
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 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2018/109331 priority Critical patent/WO2020073166A1/zh
Priority to CN201880001620.3A priority patent/CN109496310B/zh
Publication of WO2020073166A1 publication Critical patent/WO2020073166A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition

Definitions

  • the present application relates to the field of fingerprint identification technology, and in particular, to a fingerprint identification method, device, and terminal device.
  • Optical fingerprint recognition technology usually uses the screen of the terminal device as the light-emitting body, illuminating the finger touching the screen through the optical path, and the light reflected by the finger is received by the fingerprint recognition device below the screen through the screen and collects the fingerprint image, and then targets the collected fingerprint The image is compared with the database, and the fingerprint is finally recognized.
  • the terminal device when the terminal device is in standby, it must require a finger to touch the screen surface to be recognized, which is easily affected by the outside world, such as film sticking, dirty screen, and long exposure time.
  • the embodiments of the present application provide a fingerprint identification method, device, and terminal device, which are beneficial to reduce the impact of the outside world on fingerprint identification, and thus can bring the user a very fast unlocking experience.
  • a fingerprint recognition method which includes: determining whether the distance between the finger and the display screen is less than or equal to a first threshold value when the user's finger approaches the display screen of the terminal device; The distance is less than or equal to the first threshold, and a fingerprint image of the finger is collected.
  • the terminal device may collect the fingerprint image of the finger, and further complete the fingerprint recognition operation, that is, the fingerprint image can be collected in the air, which is helpful to reduce the impact of the outside world on fingerprint recognition, which may give the user Bring a speedy unlocking experience.
  • collecting the fingerprint image of the finger includes: if it is determined for the first time that the distance is less than or equal to the first threshold, collecting the finger from the Multiple fingerprint images when the distance begins to approach the display screen; the method further includes: if the difference between the multiple fingerprint images is within the first range, processing the multiple fingerprint images to complete the fingerprint recognition operation.
  • the process of determining whether the distance between the finger and the display screen is less than or equal to the first threshold during the user's finger approaching the display screen of the terminal device includes: During the process of the display screen, the display screen detects the distance and determines whether the distance is less than or equal to the first threshold; the method further includes: if the distance is less than or equal to the first threshold, the display screen triggers the The fingerprint recognition device collects the fingerprint image of the finger.
  • the display screen when the display screen detects the distance, the display screen is in a suspended state.
  • the method is executed by the fingerprint identification device of the terminal device.
  • determining whether the distance between the finger and the display screen is less than or equal to the first threshold includes: detecting the reflection of the finger The magnitude of the signal amount of light; if the signal amount exceeds the second threshold, determine that the distance is less than or equal to the first threshold.
  • the method before determining whether the distance between the finger and the display screen is less than or equal to the first threshold, the method further includes: if the posture of the terminal device changes, fingerprint identification of the terminal device The device wakes up the display.
  • the method before determining whether the distance between the finger and the display screen is less than or equal to the first threshold, the method further includes: if the posture of the terminal device does not change, according to the user's touch input To wake up the display of the terminal device.
  • the display screen is an organic light-emitting diode OLED display screen.
  • the reflected light of the finger detected by the fingerprint recognition device of the terminal device is visible light or invisible light.
  • a fingerprint device for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • the apparatus may include a unit for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • the device further includes: an optical component disposed above the fingerprint sensor.
  • the optical assembly includes an array of through holes, and the array of through holes is used to direct the reflected light of the finger on the optical sensing unit of the fingerprint sensor.
  • the optical component includes a lens, and the lens is used to modulate the light reflected by the finger onto the optical sensing unit of the fingerprint sensor.
  • the device includes a plurality of fingerprint sensors, each fingerprint sensor of the plurality of fingerprint sensors corresponds to an independent lens, and the plurality of fingerprint sensors are distributed side by side on the flexible connection board FPC.
  • At least two fingerprint sensors of the plurality of fingerprint sensors have different focal lengths of lenses.
  • fingerprint sensors with different focal lengths can achieve clear imaging, and at the same time, it can expand the depth of field, enhance the resolution of the image, and enhance the texture information of the finger, so as to better realize the collection of floating fingerprint images.
  • the distance between any two adjacent fingerprint sensors in the plurality of fingerprint sensors is less than or equal to the third threshold.
  • the device further includes a processing circuit, which is used to merge the fingerprint images of the finger collected by the multiple fingerprint sensors.
  • the optical component includes a filter layer, and the filter layer is used to filter out visible light or invisible light in the reflected light of the finger and point it to the optical sensing unit of the fingerprint sensor.
  • a terminal device which includes a memory, a processor, a touch screen, and a fingerprint module.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory.
  • the processing The device executes the method in the first aspect or any possible implementation manner of the first aspect.
  • a computer-readable medium for storing a computer program, the computer program including instructions for performing the method of the first aspect or any possible implementation manner of the first aspect.
  • a computer program product including instructions, which when executed on a computer, causes the computer to execute the method in the first aspect or any optional implementation manner of the first aspect.
  • FIG. 1 shows a schematic block diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 shows a schematic block diagram of a fingerprint identification method according to an embodiment of the present application.
  • FIG. 3 shows a schematic flowchart of a fingerprint identification method according to an embodiment of the present application.
  • FIG. 4 shows a schematic block diagram of a fingerprint identification system according to an embodiment of the present application.
  • FIG. 5 shows a schematic structural diagram of a fingerprint identification system according to an embodiment of the present application.
  • FIG. 6 shows another schematic structural diagram of a fingerprint identification system according to an embodiment of the present application.
  • FIG. 7 shows another schematic structural diagram of the fingerprint identification system according to an embodiment of the present application.
  • FIG. 8 shows a schematic block diagram of a terminal device according to an embodiment of the present application.
  • the fingerprint identification device provided in the embodiments of the present application can be applied to smart phones, tablet computers, and other mobile terminals or other terminal devices with display screens; more specifically, in the above terminal devices, the fingerprint identification device It may be specifically an optical fingerprint device, which may be provided in a partial area or all areas below the display screen to form an under-display optical fingerprint system.
  • FIG. 1 it is a schematic structural diagram of a terminal device to which an embodiment of the present application can be applied.
  • the terminal device 100 includes a display screen 120 and a fingerprint recognition device 130, where the fingerprint recognition device 130 is disposed below the display screen 120 Local area.
  • the fingerprint recognition device 130 may include a sensing array having a plurality of optical sensing units, wherein the sensing array may also be a fingerprint sensor.
  • the area where the sensing array is located or its optical sensing area is the fingerprint detection area 103 of the fingerprint identification device 130. As shown in FIG. 1, the fingerprint detection area 103 is located in the display area 102 of the display screen 120.
  • the terminal device 100 adopting the above structure does not require a special reserved space on the front of it to set fingerprint keys (such as the Home key).
  • the display screen 120 may adopt a display screen with a self-luminous display unit, such as an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display screen or a micro light-emitting diode (Micro-LED) display Screen.
  • a self-luminous display unit such as an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display screen or a micro light-emitting diode (Micro-LED) display Screen.
  • OLED Organic Light-Emitting Diode
  • Micro-LED micro light-emitting diode
  • the terminal device 100 may include a touch controller, and the touch controller may specifically be a touch panel, which may be provided on the surface of the display screen 120, or may be partially integrated or integrated as a whole Go inside the display screen 120 to form the touch display screen.
  • the fingerprint recognition device 130 may use a display unit (ie, an OLED light source) of the OLED display screen 120 located in the fingerprint detection area 103 as an excitation light source for optical fingerprint detection.
  • the fingerprint identification device 130 may also use an internal light source or an external light source to provide an optical signal for fingerprint detection.
  • the fingerprint identification device 130 may be applicable to non-self-luminous display screens, such as liquid crystal display screens or other passive light-emitting display screens.
  • the fingerprint recognition device 130 may further include an excitation light source for optical fingerprint detection, the excitation light source It may be specifically an infrared light source or a light source with a non-visible light of a specific wavelength, which may be provided under the backlight module of the liquid crystal display or the edge area under the protective cover of the terminal device 100, and the fingerprint identification device 130 is arranged under the backlight module, and the backlight module allows the fingerprint detection light to pass through the liquid crystal panel and the backlight module through openings or other optical design of the film layers such as the diffusion sheet, the brightness enhancement sheet, the reflection sheet, etc. Reach the induction array of the fingerprint identification device 130.
  • the excitation light source It may be specifically an infrared light source or a light source with a non-visible light of a specific wavelength, which may be provided under the backlight module of the liquid crystal display or the edge area under the protective cover of the terminal device 100, and the fingerprint identification device 130 is arranged under the backlight module, and the backlight module allows the fingerprint detection light to pass through the liquid crystal panel and
  • the sensing array of the fingerprint recognition device 130 may specifically be a photodetector array, which includes a plurality of photodetectors distributed in an array, and the photodetectors may be used as the optical sensing unit as described above .
  • the sensing array of the fingerprint recognition device 130 may specifically be a photodetector array, which includes a plurality of photodetectors distributed in an array, and the photodetectors may be used as the optical sensing unit as described above .
  • the sensing array of the fingerprint recognition device 130 may specifically be a photodetector array, which includes a plurality of photodetectors distributed in an array, and the photodetectors may be used as the optical sensing unit as described above .
  • the terminal device 100 may further include a transparent protective cover 110, and the cover 110 may be a glass cover or a sapphire cover, which is located above the display 120 and covers The front of the terminal device 100.
  • the so-called finger pressing on the display screen 120 actually means pressing on the cover plate 110 above the display screen 120 or covering the surface of the protective layer of the cover plate 110.
  • the fingerprint recognition device 130 may include a light detection part 134 and an optical component 132, the light detection part 134 includes the sensing array and is electrically connected to the sensing array
  • the connected reading circuit and other auxiliary circuits may be fabricated on a chip through a semiconductor process; that is, the light detection portion 134 may be fabricated on an optical imaging chip or an image sensor chip.
  • the optical component 132 may be disposed above the sensing array of the light detection portion 134, and the optical component 132 may include a filter layer, a light guide layer, and other optical elements; the filter layer may be used for The ambient light penetrating the finger is filtered out, and the light guide layer is mainly used for guiding (such as optical collimation or convergence) of the reflected light reflected from the finger surface to the sensing array for optical detection.
  • the light emitted by the display screen 120 is reflected on the surface of the finger to be detected above the display screen 120, and the reflected light reflected from the finger is optically collimated or concentrated by the micro-hole array or the lens unit, and then further After being filtered by the filter layer, the optical detection portion 134 receives the reflected light, and the optical detection portion 134 can further detect the received reflected light, so as to obtain a fingerprint image of the finger to realize fingerprint recognition.
  • the position of the filter layer of the optical component 132 is not limited to below the light guide layer; for example, in an alternative
  • the filter layer may also be disposed between the light guide layer and the display screen 120, that is, above the light guide layer; or, the optical component 132 may include two filter layers, The two are respectively arranged above and below the light guide layer.
  • the filter layer may also be integrated into the light guide layer, or may even be omitted, which is not limited in this application.
  • the optical component 132 and the light detection part 134 can be packaged in the same optical fingerprint chip. It may also be installed in the fingerprint recognition device as a relatively independent component from the optical detection part 134, that is, the optical component 732 is provided outside the chip where the light detection part 734 is located, for example, the optical component 732 is attached Above the chip, or integrate some elements of the optical assembly 732 into the above chip. There are various implementation solutions for the light guide layer of the optical component 732.
  • the light guide layer of the optical component 732 is specifically an optical path modulator or an optical path collimator made of a semiconductor silicon wafer or other substrate (such as silicon oxide or nitride), which has Multiple optical path modulation units or collimation units.
  • the optical path modulation unit or collimation unit may be specifically a through hole having a high aspect ratio. Therefore, the multiple collimation units or lens units may constitute a through hole array.
  • the light incident on the optical path modulation unit or the collimating unit can pass through and be received by the optical sensing unit below it, and each optical sensing unit can basically receive the light passing above it.
  • the light guide layer may also include an optical lens (Lens) layer having one or more optical lens units, such as a lens group composed of one or more aspheric lenses.
  • an optical lens (Lens) layer having one or more optical lens units, such as a lens group composed of one or more aspheric lenses.
  • the sensor array of the light detection part 134 may specifically include only a single sensor array, or a dual sensor array (Dual Array) or multiple sensor array (Multiple Array) with two or more sensor arrays arranged side by side ) Architecture.
  • the optical component 732 may use a single light guide layer to simultaneously cover the two or more sensing arrays; alternatively, the optical component 732 may also include two or more light guide layers arranged side by side, such as two or more optical path modulators or optical path collimators, or two or more optical lens layers, the two or more light guide layers arranged side by side
  • the light layers are respectively arranged above the two or more sensing arrays, and are used for guiding or concentrating the related reflected light to the sensing arrays below them.
  • the display screen 120 may also use a non-self-luminous display screen, such as a backlit liquid crystal display screen; in this case, the fingerprint recognition device 130 cannot use the display screen 120
  • the display unit is used as an excitation light source. Therefore, it is necessary to integrate an excitation light source inside the fingerprint recognition device 130 or set an excitation light source outside to realize optical fingerprint detection.
  • the detection principle is consistent with the content described above.
  • FIG. 2 shows a schematic flowchart of a fingerprint identification method 200 according to an embodiment of the present application.
  • the method may be performed by a terminal device, which may adopt the structure shown in FIG. 1, that is, it includes a fingerprint recognition device (such as the fingerprint identification device 130 described above) located below the screen (such as the display screen 120). ), Alternatively, the terminal device may also adopt a fingerprint identification system of other structures.
  • the method 200 includes some or all of the following:
  • S210 During the process of the user's finger approaching the display screen of the terminal device, determine whether the distance between the finger and the display screen is less than or equal to the first threshold;
  • S220 If the distance is less than or equal to the first threshold, collect a fingerprint image of the finger.
  • the terminal device when the terminal device is in a state requiring unlocking or in a state to be paid, the user's finger may be close to the display screen of the terminal device, and during the approach, the terminal device may detect the distance between the finger and the display screen, and It is determined whether it is less than or equal to the predefined first threshold, and if it is determined that the currently detected distance is less than or equal to the first threshold, the terminal device may collect the fingerprint image of the finger. If the currently detected distance is greater than the first threshold, the terminal device does not collect the fingerprint image when the finger is at the current distance. The terminal device can detect the distance between the finger and the display screen again while the finger continues to approach the display screen.
  • the terminal device detects that the distance between the finger and the display screen is less than or equal to the first threshold.
  • the distance between the finger and the display screen can be detected by the processor of the terminal device, or by a separate ranging sensor in the terminal device, and can also be detected by the touch controller of the above display screen or fingerprint recognition with proximity sensing function Device detection and so on.
  • the first threshold may be the maximum distance that the fingerprint recognition device can detect the fingerprint image, or any distance smaller than the maximum distance, for example, the first threshold is 2 cm. And the first threshold can be obtained by testing before the terminal device leaves the factory, and stored in the terminal device.
  • the terminal device When the terminal device senses that a finger is approaching the display screen, it detects the distance between the finger and the display screen and compares it with the first threshold stored internally, thereby determining whether to collect the fingerprint image this time.
  • the first threshold should be a value greater than 0, that is to say, during the process of the finger approaching the display screen, the terminal device may collect the fingerprint image of the finger, and further complete the fingerprint recognition operation, that is, it can The realization of collecting fingerprint images in the air is helpful to reduce the impact of the outside world on fingerprint recognition, which may bring users a very fast unlocking experience.
  • collecting a fingerprint image of the finger includes: if it is determined for the first time that the distance is less than or equal to the first threshold, collecting the finger Multiple fingerprint images when approaching the display screen from the distance; the method further includes: if the difference between the multiple fingerprint images is within the first range, processing the multiple fingerprint images to complete the fingerprint recognition operation.
  • the terminal device In the process of the finger approaching the display screen, the terminal device continuously detects the distance between the finger and the display screen and judges with the first threshold. If it is greater than the first threshold, it continues to detect the distance between the finger and the display screen. Or equal to the first threshold, the fingerprint image when the finger is at the current distance can be collected. In addition, the finger continues to approach the display screen. At this time, the terminal device may directly collect fingerprint images when the finger is at a different distance without continuing to detect the distance between the finger and the display screen. When the terminal device collects multiple fingerprint images, it can further determine whether the quality difference of the multiple images is obvious, if it is obvious, it is considered that the fingerprint image collected multiple times is not available, if it is not obvious, it is considered Fingerprint images are available.
  • the terminal device can determine whether the difference between the fingerprint images collected twice is within a certain range, and if the difference between the fingerprint images collected twice is within the range, the multiple fingerprint images are merged. , And send the algorithm for feature extraction, and subsequent fingerprint recognition actions. Or, the terminal device only needs to judge that the difference between two fingerprint images in the multiple fingerprint images is within a certain range, and merge the multiple fingerprint images, and send the algorithm for feature extraction, and subsequent fingerprint recognition action.
  • the process of determining whether the distance between the finger and the display screen is less than or equal to the first threshold during the user's finger approaching the display screen of the terminal device includes: During the process of the display screen, the display screen detects the distance and determines whether the distance is less than or equal to the first threshold; the method further includes: if the distance is less than or equal to the first threshold, the display screen triggers the The fingerprint recognition device collects the fingerprint image of the finger.
  • the detection of the distance between the finger and the display screen can be implemented by a processor other than the fingerprint recognition device, the touch controller of the display screen, etc., and the processor or touch controller determines the detected finger and the display screen The distance between them is within the measurable range, which in turn can trigger the fingerprint recognition device to collect the fingerprint image of the finger. In other words, if it is determined that the distance between the detected finger and the display screen is not within the measurable range, it is not necessary to trigger the fingerprint recognition device to collect fingerprint images.
  • the touch controller when the touch controller detects the distance between the finger and the display screen, the touch controller can be set to a floating state.
  • the detection of the distance between the finger and the display screen may be performed by a fingerprint recognition device, which may have a proximity sensing function. That is, during the process of the finger approaching the display screen, the fingerprint recognition device can detect the distance between the finger and the display screen and determine the magnitude relationship with the first threshold. If the distance is less than or equal to the first threshold, the fingerprint recognition device can Collect fingerprint images of fingers directly.
  • determining whether the distance between the finger and the display screen is less than or equal to the first threshold during the user's finger approaching the display screen of the terminal device includes: detecting the finger The magnitude of the signal amount of the reflected light; if the signal amount exceeds the second threshold, determine that the distance is less than or equal to the first threshold.
  • the terminal device can determine whether the distance between the finger and the display screen is less than or equal to the signal amount of the reflected light formed by the display screen irradiating the finger and judging whether the signal amount exceeds the second threshold The first threshold.
  • the terminal device does not need the current distance value between the finger and the display screen, and only needs to determine the relationship between the distance between the finger and the display screen and the first threshold value through the relationship between the size of the semaphore and the second threshold value. can.
  • the relationship between the distance between the finger and the display and the first threshold can also be obtained in other ways. For example, the distance between the finger and the display can be directly obtained through a distance measuring sensor, and the distance and the The relationship between a threshold.
  • the specific process of the fingerprint identification method 300 of the embodiment of the present application will be described in detail below with reference to FIG. 3.
  • the method 300 may be executed by a terminal device. As shown in FIG. 3, the method 300 is executed by a mobile phone, and specifically includes some or all of the following:
  • the display screen of the mobile phone is in a sleep state.
  • the display screen is in a non-bright screen state.
  • the user can wake up the display screen through step S302 + step S304, and the user can also wake up the display screen through step S303 + step S305.
  • the user can pick up the mobile phone, that is, the posture of the mobile phone changes (relative to the default posture, the posture of the mobile phone lying flat can be considered as the default posture), when the fingerprint sensor senses that the posture of the mobile phone changes, the fingerprint sensor You can wake up the display.
  • step S302 + S304 or step S303 + S305 the display screen is in a bright state.
  • the touch controller may be converted into a suspended state, and the relationship between the distance when the finger approaches the display screen and the above-mentioned first threshold value is continuously detected.
  • the touch controller detects that the distance between the finger and the display screen is less than or equal to the first threshold, taking 2 cm as an example, the touch controller triggers the fingerprint sensor in the fingerprint recognition device to collect an image.
  • the fingerprint sensor continuously collects fingerprint images to facilitate image merge processing and complete the fingerprint recognition operation.
  • FIG. 3 is only used to schematically illustrate the fingerprint recognition method of the embodiment of the present application, and the embodiment of the present application should not be limited thereto.
  • the display screen involved in the embodiments of the present application may be an OLED display screen.
  • the light emitted from the display screen reflects the fingerprint on the surface of the finger to reflect and form reflected light.
  • the reflected light may pass through the display screen and pass through the fingerprint recognition device
  • the filter layer in the filter reaches the fingerprint sensor after filtering. It should be understood that the filter layer can filter out invisible light in the reflected light, and the fingerprint sensor receives visible light.
  • the filter layer can also filter out visible light in the reflected light, and the fingerprint sensor receives invisible light. Since visible light is extremely susceptible to the influence of the external light environment, resulting in poor image quality of fingerprint imaging, the above problems can be solved by using invisible light.
  • FIG. 4 shows a schematic block diagram of a fingerprint identification device 400 according to an embodiment of the present application. As shown in FIG. 4, the device 400 includes:
  • the fingerprint sensor 410 is used to collect a fingerprint image of the finger when the distance between the user's finger and the display screen of the terminal device is less than or equal to the first threshold.
  • the terminal device may collect the fingerprint image of the finger and further complete the fingerprint recognition operation, that is, the fingerprint image can be collected in the air, which is beneficial to reduce The influence of the outside world on fingerprint recognition may bring users a very fast unlocking experience.
  • the device further includes: a processing circuit, configured to determine whether the distance between the finger and the display screen is less than or equal to the first when the finger approaches the display screen Threshold.
  • the fingerprint sensor is specifically used to collect the fingerprint image of the finger according to the trigger of the display when the distance between the finger and the display is less than or equal to the first threshold .
  • the fingerprint recognition device may be the fingerprint recognition device 130 in FIG. 1.
  • the fingerprint sensor may be the optical detection part 134 in FIG. 1, and the fingerprint sensor is a sensing array having a plurality of optical sensing units.
  • the fingerprint identification device may also include the optical component 132 in FIG. 1. Refer to Figure 1 for the positional relationship between the optical component and the fingerprint sensor.
  • FIG. 5 shows a schematic structural diagram of an off-screen fingerprint identification system composed of a fingerprint identification device and a display screen.
  • the fingerprint identification system is based on the optical path design principle of the collimated hole.
  • the fingerprint identification device includes an optical component composed of a through-hole array and a filter layer and a fingerprint sensor, and the filter layer is located in the through-hole array Below.
  • the light emitted by the display screen is reflected on the surface of the finger to be detected above the display screen, and the reflected light reflected from the finger surface is collimated and modulated by the through-hole array, and the reflected light is guided to the filter layer, the reflected light After being filtered by the filtering light layer, it is received by a fingerprint sensor, which can further detect the received reflected light to realize fingerprint recognition.
  • FIG. 6 shows another schematic structural diagram of an off-screen fingerprint identification system composed of a fingerprint identification device and a display screen.
  • the fingerprint identification system is based on the optical path design principle of microlens imaging.
  • the fingerprint identification device includes an optical component composed of a lens and a filter layer and a fingerprint sensor, and the filter layer is located below the lens.
  • the light emitted by the display screen is reflected on the surface of the finger to be detected above the display screen, and the reflected light reflected from the finger surface is modulated by the lens, and the reflected light is guided to the filter layer.
  • the reflected light passes through the filter layer After filtering, it is received by the fingerprint sensor, and the fingerprint sensor can further detect the received reflected light to realize fingerprint recognition.
  • the fingerprint identification device in FIG. 5 or FIG. 6 is only an exemplary structure.
  • the position of the optical filter layer of the optical component is not limited to below the through-hole array / lens; A hole array is used as an example.
  • the filter layer may also be disposed between the through-hole array and the display screen, that is, above the through-hole array; or, the optical component may include two filter layers, two They are arranged above and below the via array, respectively.
  • the filter layer may also be integrated into the through-hole array, or may even be omitted, which is not limited in this application.
  • the fingerprint sensors in the fingerprint identification device may be arranged on a flexible printed circuit (FPC), that is, the fingerprint identification device may include an FPC.
  • FPC flexible printed circuit
  • FIG. 7 shows a structure diagram of a fingerprint recognition system composed of the fingerprint recognition device and the display screen.
  • the fingerprint recognition device includes an optical component composed of a lens and a filter layer and a fingerprint sensor, and the filter layer is located below the lens.
  • the optical assembly includes two lenses, and each lens has an independent fingerprint sensor, that is, two fingerprint sensors are arranged side by side on the FPC, and the light emitted by the display is to be detected above the display The surface of the finger is reflected to form two sets of optical paths.
  • the two sets of optical paths are modulated by different lenses, and the two sets of optical paths are led to the filter layer.
  • the two sets of optical paths are respectively filtered by the respective fingerprint sensors after being filtered by the filter layer Receiving, the fingerprint sensor can further detect the reflected light in the respective optical paths to realize fingerprint recognition.
  • the two fingerprint sensors may have different focal lengths or different apertures.
  • the fingerprint sensor with a longer focal length can quickly capture a fingerprint image with a longer distance
  • the fingerprint sensor with a shorter focal length can quickly capture a fingerprint image with a shorter distance; the larger the actual diameter of the aperture can quickly capture the fingerprint image with a longer distance, aperture If the actual diameter is smaller, you can quickly capture a closer fingerprint image. Therefore, the fingerprint recognition device shown in FIG. 7 can realize clear imaging, and at the same time, it can expand the depth of field, enhance the resolution of the image, and enhance the texture information of the finger, so as to better realize the collection of floating fingerprint images.
  • the arrangement of the two fingerprint sensors can be within a certain range, so that the angle of view (FOV) of the two fingerprint sensors is close to coincide, and the image processing algorithm can be used to The images collected by each fingerprint sensor are specially merged.
  • FOV angle of view
  • the fingerprint recognition device in FIG. 7 is only an exemplary structure.
  • the fingerprint recognition device may include a plurality of lenses and a fingerprint sensor corresponding to each of the lenses, the plurality of fingerprint sensors It can be distributed side by side on the FPC. At least two of the multiple fingerprint sensors can have different focal lengths and different apertures.
  • the filter layers in each optical path may be provided separately, or all the optical paths use the same filter layer, which is not limited in this embodiment of the present application.
  • the disclosed fingerprint sensor can be used not only to capture and detect the patterns of fingers or palms associated with a person using optical sensing, but also to use optical sensing or other sensing mechanisms to detect Whether the fingerprint or palm pattern captured or detected by the “finger” detection mechanism comes from the hand of a living person.
  • the detection mechanism may be based on, for example, different light absorption behaviors of blood at different optical wavelengths, in fact, due to the natural movement or movement of a living person (intentional or unintentional) or the pulsation when blood flows through the body connected to the heartbeat Human fingers are usually moving or stretching.
  • the fingerprint sensor can detect changes in the returned light from the finger or palm, thereby detecting whether there is a live heartbeat in the object that appears as the finger or palm.
  • the fingerprint recognition device provided in FIGS. 4 to 7 may correspond to the executive body in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the fingerprint recognition device are for realizing FIG. 2 and FIG. The corresponding flow of each method in 3 is not repeated here for the sake of brevity.
  • an embodiment of the present application further provides a fingerprint identification system, which may include the fingerprint identification device and the display screen in the various embodiments described above.
  • the fingerprint identification system may be a terminal device, including but not limited to a mobile phone, a computer, a multimedia machine, and a game machine.
  • the display screen in the fingerprint identification system may be an OLED display screen.
  • FIG. 8 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application.
  • the terminal device 500 shown in FIG. 8 includes: a radio frequency (Radio Frequency) circuit 510, a memory 520, other input devices 530, a display screen 540, a sensor 550, an audio circuit 560, an I / O subsystem 570, a processor 580, And power supply 590 and other components.
  • a radio frequency (Radio Frequency) circuit 510 included in FIG. 8
  • a memory 520 included in FIG. 8
  • the structure of the terminal device shown in FIG. 8 does not constitute a limitation on the terminal device, and may include more or less components than the illustration, or combine some components, or split some components. , Or different component arrangements.
  • the display screen 540 belongs to a user interface (User Interface, UI), and the terminal device 500 may include a user interface that is less than that illustrated or less.
  • UI User Interface
  • the RF circuit 510 can be used for receiving and sending signals during receiving and sending information or during a call. In particular, after receiving the downlink information of the base station, it is processed by the processor 580; in addition, the uplink data designed to be sent to the base station.
  • the RF circuit includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like.
  • the RF circuit 510 can also communicate with the network and other devices through wireless communication.
  • the memory 520 may be used to store software programs and modules.
  • the processor 580 executes various functional applications and data processing of the terminal device 500 by running the software programs and modules stored in the memory 520.
  • the memory 520 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the storage data area may store Data created by the use of the terminal device 500 (such as audio data, phone book, etc.), etc.
  • the memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the other input device 530 may be used to receive input numeric or character information, and generate signal input related to user settings and function control of the terminal device 500.
  • other input devices 530 may include but are not limited to physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and light mice (light mice are touch sensitive that do not display visual output Surface, or an extension of a touch-sensitive surface formed by a screen), or the like.
  • the other input device 530 is connected to the other input device controller 571 of the I / O subsystem 570, and performs signal interaction with the processor 580 under the control of the other device input controller 571.
  • the display screen 540 may be used to display information input by the user or information provided to the user and various menus of the terminal device 500, and may also accept user input.
  • the specific display screen 540 may be a touch screen, which may include a display panel 541 and a touch panel 542.
  • the touch panel 542 may cover the display panel 541, and the user may cover the Operate on or near the control panel 542, after detecting the operation on or near it, the touch panel 542 transmits it to the processor 580 through the I / O subsystem 570 to determine the user input, and then the processor 580 passes the I according to the user input.
  • the / O subsystem 570 provides corresponding visual output on the display panel 541.
  • the touch panel 542 and the display panel 541 are implemented as two independent components to realize the input and input functions of the terminal device 500, in some embodiments, the touch panel 542 and the display panel 541 may be The input and output functions of the terminal device 500 are integrated.
  • the terminal device 500 may further include at least one sensor 550.
  • the sensor 550 may be a fingerprint sensor located under or within the display screen 540, that is, the fingerprint identification device in the embodiment of the present application.
  • the audio circuit 560, the speaker 561, and the microphone 562 may provide an audio interface between the user and the terminal device 500.
  • the audio circuit 560 can convert the received audio data converted signal to the speaker 561, which converts the speaker 561 into a sound signal output; on the other hand, the microphone 562 converts the collected sound signal into a signal, which is received by the audio circuit 560 Convert to audio data, and then output the audio data to the RF circuit 510 to send to another mobile phone, for example, or output the audio data to the memory 520 for further processing.
  • the I / O subsystem 570 is used to control input and output external devices, and may include other device input controllers 571, sensor controllers 572, and display controllers 573.
  • one or more other input control device controllers 571 receive signals from other input devices 530 and / or send signals to other input devices 530.
  • the other input devices 530 may include physical buttons (press buttons, rocker buttons, etc.) , Dial, slide switch, joystick, click wheel, light mouse (light mouse is a touch-sensitive surface that does not display visual output, or an extension of the touch-sensitive surface formed by the screen). It is worth noting that the other input control device controller 571 can be connected to any one or more of the above devices.
  • the display controller 573 in the I / O subsystem 570 receives signals from the display screen 540 and / or sends signals to the display screen 540. After the display screen 540 detects the user input, the display controller 573 converts the detected user input into interaction with the user interface object displayed on the display screen 540, that is, realizes human-computer interaction.
  • the sensor controller 572 may receive signals from one or more sensors 550 and / or send signals to one or more sensors 550.
  • the processor 580 is the control center of the terminal device 500, and uses various interfaces and lines to connect the various parts of the entire terminal device, by running or executing the software programs and / or modules stored in the memory 520, and calling the Data, perform various functions and process data of the terminal device 500, thereby performing overall monitoring of the terminal device.
  • the processor 580 may include one or more processing units; preferably, the processor 580 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs, etc.
  • the modem processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 580.
  • the processor 580 may be used to execute various steps in the method embodiments of the present application.
  • the terminal device 500 further includes a power supply 590 (such as a battery) that supplies power to various components.
  • a power supply 590 such as a battery
  • the power supply may be logically connected to the processor 580 through a power management system, so that functions such as charging, discharging, and power consumption are managed through the power management system.
  • the terminal device 500 may further include a camera, a Bluetooth module, etc., which will not be repeated here.
  • circuits, branches, and units may be implemented in other ways.
  • the branch described above is schematic.
  • the division of the unit is only a logical function division. In actual implementation, there may be other divisions.
  • multiple units or components may be combined or integrated into A branch, or some features can be ignored, or not implemented.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

Abstract

本申请实施例提供了一种指纹识别方法、装置和终端设备，该方法包括：在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值；若该距离小于或等于该第一阈值，采集该手指的指纹图像。本申请实施例的方法、装置和终端设备，有利于减少外界对指纹识别的影响，从而能够给用户带来极速的解锁体验。

Description

指纹识别方法、装置和终端设备 技术领域
本申请涉及指纹识别技术领域，尤其涉及一种指纹识别方法、装置和终端设备。
背景技术
光学指纹识别技术通常采用终端设备的屏幕作为发光主体，通过光路照射到触摸到屏幕的手指，由手指反射的光线再通过屏幕由屏幕下方的指纹识别装置接收并采集指纹图像，进而针对采集的指纹图像与数据库进行分析比对，最终识别指纹。
相关技术中，终端设备在待机时，必须需要手指接触到屏幕表面才能识别，容易受外界比如贴膜、屏幕脏污、曝光时间长的影响。
发明内容
有鉴于此，本申请实施例提供了一种指纹识别方法、装置和终端设备，有利于减少外界对指纹识别的影响，从而能够给用户带来极速的解锁体验。
第一方面，提供了一种指纹识别方法，该方法包括：在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值；若该距离小于或等于该第一阈值，采集该手指的指纹图像。
通过在手指接近显示屏的过程中，判断手指与显示屏之间的距离与第一阈值的关系，在该距离小于或等于该第一阈值时，采集该手指的指纹图像，也就是说在手指接近显示屏的过程中，终端设备就有可能采集到该手指的指纹图像，并进一步地完成指纹识别操作，即能够实现悬空采集指纹图像，有利于减少外界对指纹识别的影响，从而可能给用户带来极速的解锁体验。
在一种可能的实现方式中，该若该距离小于或等于该第一阈值，采集该手指的指纹图像，包括：若第一次确定该距离小于或等于该第一阈值，采集该手指从该距离开始靠近该显示屏时的多次指纹图像；该方法还包 括：若该多次指纹图像的差异在第一范围之内，对该多次指纹图像进行处理，以完成指纹识别操作。
在一种可能的实现方式中，该在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值，包括：在该手指接近该显示屏的过程中，该显示屏检测该距离，并确定该距离是否小于或等于该第一阈值；该方法还包括：若该距离小于或等于该第一阈值，该显示屏触发该终端设备的指纹识别装置采集该手指的指纹图像。
在一种可能的实现方式中，在该显示屏检测该距离时，该显示屏处于悬空状态。
在一种可能的实现方式中，该方法由该终端设备的指纹识别装置执行。
在一种可能的实现方式中，该在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值，包括：检测该手指的反射光的信号量的大小；若该信号量超过第二阈值，确定该距离小于或等于该第一阈值。
在一种可能的实现方式中，在确定该手指与该显示屏之间的距离是否小于或等于第一阈值之前，该方法还包括：若该终端设备的体位发生变化，该终端设备的指纹识别装置唤醒该显示屏。
在一种可能的实现方式中，在确定该手指与该显示屏之间的距离是否小于或等于第一阈值之前，该方法还包括：若该终端设备的体位未发生变化，根据用户的触摸输入，唤醒该终端设备的显示屏。
在一种可能的实现方式中，该显示屏为有机发光二极管OLED显示屏。
在一种可能的实现方式中，该终端设备的指纹识别装置检测的该手指的反射光为可见光或不可见光。
第二方面，提供一种指纹装置，用于执行第一方面或第一方面任意可能的实现方式中的方法。具体地，该装置可以包括用于执行第一方面或第一方面任意可能的实现方式中的方法的单元。
在一种可能的实现方式中，该装置还包括：光学组件，该光学组件设置在该指纹传感器的上方。
在一种可能的实现方式中，该光学组件包括通孔阵列，该通孔阵列用于将该手指的反射光指向该指纹传感器的光学感应单元上。
在一种可能的实现方式中，该光学组件包括透镜，该透镜用于将该手指反射的光调制到该指纹传感器的光学感应单元上。
在一种可能的实现方式中，该装置包括多个指纹传感器，该多个指纹传感器中的每个指纹传感器分别对应独立的透镜，该多个指纹传感器并排分布在柔性连接板FPC上。
在一种可能的实现方式中，该多个指纹传感器中至少两个指纹传感器对应的透镜的焦距不同。
采用不同焦距的指纹传感器可以实现清晰的成像，同时，可以扩大景深，增强图像的解析力，增强手指的纹路信息，以更好地实现悬空指纹图像采集。
在一种可能的实现方式中，该多个指纹传感器中的任两个相邻指纹传感器之间的距离小于或等于第三阈值。
在一种可能的实现方式中，该装置还包括处理电路，该处理电路用于对该多个指纹传感器采集的该手指的指纹图像进行合并处理。
在一种可能的实现方式中，该光学组件包括滤波层，该滤波层用于将该手指的反射光中的可见光或不可见光滤出，并指向该指纹传感器的光学感应单元上。
第三方面，提供一种终端设备，包括存储器、处理器、触摸屏和指纹模组，该存储器用于存储计算机程序，处理器用于从存储器中调用并运行计算机程序，当程序被运行时，该处理器执行上述第一方面或第一方面任意可能的实现方式中的方法。
第四方面，提供一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第五方面，提供了一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任一可选的实现方式中的方法。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1示出了本申请实施例的应用场景的示意性框图。
图2示出了本申请实施例的指纹识别方法的示意性框图。
图3示出了本申请实施例的指纹识别方法的示意性流程图。
图4示出了本申请实施例的指纹识别系统的示意性框图。
图5示出了本申请实施例的指纹识别系统的一种结构示意图。
图6示出了本申请实施例的指纹识别系统的另一种结构示意图。
图7示出了本申请实施例的指纹识别系统的再一种结构示意图。
图8示出了本申请实施例的终端设备的示意性框图。
具体实施方式
为了使本领域的人员更好地理解本申请实施例中的技术方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请实施例的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都应当属于本申请实施例保护的范围。
一种常见的应用场景，本申请实施例提供的指纹识别装置可以应用在智能手机、平板电脑以及其他具有显示屏的移动终端或者其他终端设备；更具体地，在上述终端设备中，指纹识别装置可以具体为光学指纹装置，其可以设置在显示屏下方的局部区域或者全部区域从而形成屏下(Under-display)光学指纹系统。
如图1所示为本申请实施例可以适用的终端设备的结构示意图，所述终端设备100包括显示屏120和指纹识别装置130，其中，所述指纹识别装置130设置在所述显示屏120下方的局部区域。所述指纹识别装置130可以包括具有多个光学感应单元的感应阵列，其中，所述感应阵列也可以是一个指纹传感器。所述感应阵列所在区域或者其光学感应区域为所述指纹识别装置130的指纹检测区域103。如图1所示，所述指纹检测区域103位于所述显示屏120的显示区域102之中，因此，使用者在需要对所述终端设备100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120的指纹检测区域103，便可以实现指纹输入。由于指纹检测可 以在屏内实现，因此采用上述结构的终端设备100无需其正面专门预留空间来设置指纹按键(比如Home键)。
作为一种优选的实施例中，所述显示屏120可以采用具有自发光显示单元的显示屏，比如有机发光二极管(Organic Light-Emitting Diode，OLED)显示屏或者微型发光二极管(Micro-LED)显示屏。另外，所述显示屏120可以具体为触控显示屏，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，所述终端设备100可以包括触摸控制器，所述触摸控制器可以具体为触控面板，其可以设置在所述显示屏120表面，也可以部分集成或者整体集成到所述显示屏120内部，从而形成所述触控显示屏。以采用OLED显示屏为例，所述指纹识别装置130可以利用所述OLED显示屏120位于所述指纹检测区域103的显示单元(即OLED光源)来作为光学指纹检测的激励光源。
在其他实施例中，所述指纹识别装置130也可以采用内置光源或者外置光源来提供用于进行指纹检测的光信号。在这种情况下，所述指纹识别装置130可以适用于非自发光显示屏，比如液晶显示屏或者其他的被动发光显示屏。以应用在具有背光模组和液晶面板的液晶显示屏为例，为支持液晶显示屏的屏下指纹检测，所述指纹识别装置130还可以包括用于光学指纹检测的激励光源，所述激励光源可以具体为红外光源或者特定波长非可见光的光源，其可以设置在所述液晶显示屏的背光模组下方或者设置在所述终端设备100的保护盖板下方的边缘区域，而所述指纹识别装置130设置在所述背光模组下方，且所述背光模组通过对扩散片、增亮片、反射片等膜层进行开孔或者其他光学设计以允许指纹检测光穿过液晶面板和背光模组并到达所述指纹识别装置130的感应阵列。
并且，所述指纹识别装置130的感应阵列具体可以为光探测器(Photo detector)阵列，其包括多个呈阵列式分布的光探测器，所述光探测器可以作为如上所述的光学感应单元。当手指按压在所述指纹检测区域103时，所述指纹检测区域103的显示单元发出的光线在手指表面的指纹发生反射并形成反射光，其中所述手指指纹的脊和谷的反射光是不同的，反射光从所述显示屏120透过并被所述光探测器阵列所接收并转换为相应的电信号，即指纹检测信号；基于所述指纹检测信号便可以获得指纹图像数据， 并且可以进一步进行指纹匹配验证，从而在所述终端设备100实现光学指纹识别功能。
应当理解的是，在具体实现上，所述终端设备100还可以包括透明保护盖板110，所述盖板110可以为玻璃盖板或者蓝宝石盖板，其位于所述显示屏120的上方并覆盖所述终端设备100的正面。因为，本申请实施例中，所谓的手指按压在所述显示屏120实际上是指按压在所述显示屏120上方的盖板110或者覆盖所述盖板110的保护层表面。
作为一种可选的实现方式，如图1所示，所述指纹识别装置130可以包括光检测部分134和光学组件132，所述光检测部分134包括所述感应阵列以及与所述感应阵列电连接的读取电路及其他辅助电路，其可以在通过半导体工艺制作在一个芯片(Die)；即所述光检测部分134可以制作在光学成像芯片或者图像传感芯片。
所述光学组件132可以设置在所述光检测部分134的感应阵列的上方，所述光学组件132可以包括滤光层(Filter)、导光层以及其他光学元件；所述滤光层可以用于滤除穿透手指的环境光，而所述导光层主要用于从手指表面反射回来的反射光导引(比如光学准直或者汇聚)至所述感应阵列进行光学检测。
所述显示屏120发出的光线在所述显示屏120上方的待检测手指表面发生反射，从手指反射回来的反射光经所述微孔阵列或者所述透镜单元进行光学准直或者汇聚之后，进一步经过滤光层的滤波后被所述光学检测部分134接收，所述光学检测部分134可以进一步对接收到的该反射光进行检测，从而获取到所述手指的指纹图像以实现指纹识别。
应当理解，上述指纹识别装置130仅是一种示例性的结构，在具体实现上，该光学组件132的滤光层的位置并不局限在所述导光层的下方；比如，在一种替代实施例中，该滤光层也可以设置在所述导光层和所述显示屏120之间，即位于所述导光层上方；或者，所述光学组件132可以包括两层滤光层，二者分别设置在所述导光层的上方和下方。在其他替代实施例中，该滤光层也可以集成到所述导光层内部，甚至也可以省略掉，本申请对此不做限制。
在具体实现上，所述光学组件132可以与所述光检测部分134封装在同一个光学指纹芯片。也可以是作为与光学检测部分134相对独立的部件 安装在指纹识别装置内部，即是将所述光学组件732设置在所述光检测部分734所在的芯片外部，比如将所述光学组件732贴合在所述芯片上方，或者将所述光学组件732的部分元件集成在上述芯片之中。其中，所述光学组件732的导光层有多种实现方案。
在一种实施例中，所述光学组件732的导光层具体为在半导体硅片或者其他基材(比如硅氧化物或氮化物)制作而成的光路调制器或者光路准直器，其具有多个光路调制单元或者准直单元，具体地，所述光路调制单元或者准直单元可以具体为具有高深宽比的通孔，因此所述多个准直单元或者透镜单元可以构成通孔阵列。在从手指反射回来的反射光中，入射到所述光路调制单元或者准直单元的光线可以穿过并被其下方的光学感应单元接收，每一个光学感应单元基本上能够接收到其上方的通孔导引过来的指纹纹路的反射光，从而所述感应阵列便可以检测出手指的指纹图像。
在其他替代实施例中，所述导光层也可以包括光学透镜(Lens)层，其具有一个或多个光学透镜单元，比如一个或多个非球面透镜组成的透镜组。从手指反射回来的反射光经所述光学透镜单元进行光路准直或者汇聚之后，并被其下方的光学感应单元接收，据此，所述感应阵列可以检测出手指的指纹图像。
另一方面，所述光检测部分134的感应阵列可以具体只包括单一的感应阵列，也可以采用具有两个或以上并排设置的感应阵列的双感应阵列(Dual Array)或多感应阵列(Multiple Array)的架构。当所述光检测部分134采用双感应阵列或者多感应阵列架构时，所述光学组件732可以采用单独一个导光层同时覆盖所述两个或以上的感应阵列；可替代地，所述光学组件732也可以包括两个或以上并排设置的导光层，比如两个或以上的光路调制器或光路准直器，或者两个或以上的光学透镜层，所述两个或以上并排设置的导光层分别对应设置在所述两个或以上的感应阵列的上方，用于将相关反射光导引或者汇聚到其下方的感应阵列。
在其他替代实现方式中，所述显示屏120也可以采用非自发光的显示屏，比如采用背光的液晶显示屏；在这种情况下，所述指纹识别装置130便无法采用所述显示屏120的显示单元作为激励光源，因此需要在所述指纹识别装置130内部集成激励光源或者在其外部设置激励光源来实现光学指纹检测，其检测原理与上面描述内容是一致的。
图2示出了本申请实施例的指纹识别方法200的流程示意图。如图2所示，该方法可以由终端设备执行，该终端设备可以采用如图1所示的结构，即包括位于屏幕(比如上述显示屏120)下方的指纹识别装置(比如上述指纹识别装置130)，可替代地，该终端设备也可以采用其他结构的指纹识别系统。具体地，该方法200包括以下部分或全部内容：
S210，在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值；
S220，若所述距离小于或等于所述第一阈值，采集该手指的指纹图像。
具体地，当终端设备处于需要解锁的状态或处于待支付状态时，用户的手指可以靠近终端设备的显示屏，在靠近的过程中，终端设备可以检测该手指与显示屏之间的距离，并确定是否小于或等于预定义的第一阈值，若确定当前检测的距离小于或等于该第一阈值时，则终端设备可以采集该手指的指纹图像。若当前检测的距离大于该第一阈值时，则终端设备不采集所述手指处于当前距离时的指纹图像。终端设备可以在手指继续靠近显示屏的过程中，再次检测手指与显示屏之间的距离。直到终端设备检测到手指与显示屏的距离小于或等于该第一阈值为止。手指与显示屏之间的距离可以由终端设备的处理器检测获得，也可以由终端设备中单独的测距传感器检测获得，还可以由上述显示屏的触摸控制器或者具有接近感应功能的指纹识别装置检测获得等。该第一阈值可以是指纹识别装置能够检测到指纹图像的最大距离，或者小于该最大距离的任一距离，例如该第一阈值为2cm。并且该第一阈值可以在终端设备出厂之前通过测试获得，并存储在该终端设备内部。当终端设备感应到有手指靠近显示屏时，检测手指与显示屏之间的距离，并与内部存储的第一阈值进行比较，由此确定是否采集此次指纹图像。应理解，所述第一阈值应该为大于0的值，也就是说在手指接近显示屏的过程中，终端设备就有可能采集到该手指的指纹图像，并进一步地完成指纹识别操作，即能够实现悬空采集指纹图像，有利于减少外界对指纹识别的影响，从而可能给用户带来极速的解锁体验。
可选地，在本申请实施例中，该若该距离小于或等于该第一阈值，采集该手指的指纹图像，包括：若第一次确定该距离小于或等于该第一阈值，采集该手指从该距离开始靠近该显示屏时的多次指纹图像；该方法还 包括：若该多次指纹图像的差异在第一范围之内，对该多次指纹图像进行处理，以完成指纹识别操作。
在手指接近显示屏的过程中，终端设备不断检测手指与显示屏之间的距离，并与第一阈值进行判断，若大于第一阈值，则继续检测手指与显示屏之间的距离，若小于或等于第一阈值，则可以采集所述手指处于当前距离时的指纹图像。并且手指继续靠近显示屏，此时终端设备可以不需要继续检测手指与显示屏之间的距离，直接采集手指处于不同距离时的指纹图像。当终端设备采集到多次指纹图像时，可以进一步判断该多次图像的质量差异是否明显，若明显，则认为该多次采集的指纹图像不可用，若不明显，则认为该多次采集的指纹图像可用。例如，终端设备可以判断相邻两次采集的指纹图像的差异是否在一定范围之内，若每两次采集的指纹图像的差异均在该范围之内，则对该多次指纹图像进行合并处理，并送算法进行特征提取，以及后续的指纹识别动作。又或者，终端设备只需要判断该多次指纹图像中有两次指纹图像的差异在一定范围之内，就对该多次指纹图像进行合并处理，并送算法进行特征提取，以及后续的指纹识别动作。
在一种可能的实现方式中，该在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值，包括：在该手指接近该显示屏的过程中，该显示屏检测该距离，并确定该距离是否小于或等于该第一阈值；该方法还包括：若该距离小于或等于该第一阈值，该显示屏触发该终端设备的指纹识别装置采集该手指的指纹图像。
如上所述，该手指与显示屏之间的距离的检测可以由指纹识别装置之外的处理器、显示屏的触摸控制器等实现，而处理器或触摸控制器确定检测到的手指与显示屏之间的距离在可测范围之内，进而可以触发指纹识别装置采集该手指的指纹图像。也就是说，若确定检测到的手指与显示屏之间的距离不在可测范围之内，则不用触发指纹识别装置采集指纹图像。以触摸控制器为例，在触摸控制器检测手指与显示屏之间的距离时，可以将该触摸控制器设置为悬浮状态。
在一种可替代地实现方式中，该手指与显示屏之间的距离的检测可以由指纹识别装置执行，该指纹识别装置可以具有接近感应功能。即，在手指接近显示屏的过程中，指纹识别装置可以检测手指与显示屏之间的距 离，并判断与第一阈值的大小关系，若该距离小于或等于第一阈值，则指纹识别装置可以直接采集手指的指纹图像。
可选地，在本申请实施例中，该在用户的手指接近终端设备的显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于第一阈值，包括：检测该手指的反射光的信号量的大小；若该信号量超过第二阈值，确定该距离小于或等于该第一阈值。
也就是说，终端设备可以通过检测由显示屏照射到手指上形成的反射光的信号量大小，并判断该信号量是否超过第二阈值，来判断手指与显示屏之间的距离是否小于或等于第一阈值。在此情况下，终端设备无需当前手指与显示屏之间的距离值，只需要通过信号量的大小与第二阈值的关系，来判断手指与显示屏之间的距离与第一阈值的关系即可。应理解，手指与显示屏之间的距离与第一阈值的关系也可以通过其他方式获取，例如，可以先通过测距传感器直接获取手指与显示屏之间的距离，并直接判断该距离与第一阈值之间的关系。
下面将结合图3详细描述本申请实施例的指纹识别方法300的具体流程。该方法300可以由终端设备执行，如图3所示，该方法300由手机执行，具体地，包括以下部分或全部内容：
S301，手机的显示屏处于休眠状态。也就是说该显示屏处于非亮屏状态。当用户需要对手机进行解锁时，用户可以通过步骤S302+步骤S304唤醒显示屏，用户也可以通过步骤S303+步骤S305唤醒显示屏。
S302+S304，用户可以拿起手机，即手机的体位发生变化(相对于默认体位，手机平放时的体位可以认为是默认体位)，当指纹传感器感应到手机的体位发生变换时，该指纹传感器可以唤醒显示屏。
S303+S305，相对地，该手机平放在桌面上，即手机的体位未发生变化，此时需要用户对该手机进行触摸操作，以此来唤醒显示屏。
S306，在经过步骤S302+S304或步骤S303+S305之后，该显示屏处于亮屏状态。
S307，在显示屏处于亮屏状态之后，可以将触摸控制器转换为悬空状态，并不断检测手指靠近显示屏时的距离与上述第一阈值之间的关系。
S308，当触摸控制器检测到手指与显示屏之间的距离小于或等于第一阈值时，以2cm为例，由触摸控制器触发指纹识别装置中的指纹传感器采 集图像。
S309，在S308之后，指纹传感器连续采集指纹图像，以便于进行图像合并处理，完成指纹识别操作。
应理解，图3所示的流程图仅仅用于示意性说明本申请实施例的指纹识别方法，本申请实施例应不限于此。
本申请实施例中所涉及的显示屏可以是OLED显示屏，该显示屏发出的光线照射到手指表面的指纹发生反射并形成反射光，该反射光可以从该显示屏透过并经过指纹识别装置中的滤波层过滤之后到达该指纹传感器。应理解，该滤波层可以将反射光中的不可见光过滤掉，指纹传感器接收的是可见光。该滤波层也可以将反射光中的可见光过滤掉，指纹传感器接收的是不可见光。由于可见光极其容易受到外界光环境的影响，导致指纹成像的图像质量差，采用不可见光则可以解决上述问题。
应理解，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。
尽管已对本申请及其优点做了详细说明，但应理解，在不脱离如所附权利要求书所界定的本申请的精神和范围的情况下，可以对本申请进行各种变化、替代和更改。
图4示出了本申请实施例的指纹识别装置400的示意性框图。如图4所示，该装置400包括：
指纹传感器410，用于在用户的手指与终端设备的显示屏之间的距离小于或等于第一阈值时，采集该手指的指纹图像。
因此，本申请实施例的指纹识别装置，通过在手指接近显示屏的过程中，判断手指与显示屏之间的距离与第一阈值的关系，在该距离小于或等于该第一阈值时，采集该手指的指纹图像，也就是说在手指接近显示屏的过程中，终端设备就有可能采集到该手指的指纹图像，并进一步地完成指纹识别操作，即能够实现悬空采集指纹图像，有利于减少外界对指纹识别的影响，从而可能给用户带来极速的解锁体验。
可选地，在本申请实施例中，该装置还包括：处理电路，用于在该手指接近该显示屏的过程中，确定该手指与该显示屏之间的距离是否小于或等于该第一阈值。
可选地，在本申请实施例中，该指纹传感器具体用于在该手指与该显示屏之间的距离小于或等于该第一阈值时，根据该显示屏的触发，采集该手指的指纹图像。
该指纹识别装置可以是图1中的指纹识别装置130。该指纹传感器可以是图1中的光学检测部分134，该指纹传感器为具有多个光学感应单元的感应阵列。该指纹识别装置也可以包括图1中的光学组件132。该光学组件与指纹传感器的位置关系可参考图1。
图5示出了由指纹识别装置和显示屏构成的屏下指纹识别系统的一种结构示意图。该指纹识别系统基于准直孔的光路设计原理，具体地，如图5所示，该指纹识别装置包括由通孔阵列和滤波层构成的光学组件以及指纹传感器，该滤波层位于该通孔阵列的下方。显示屏发出的光线在显示屏上方的待检测手指表面发生反射，通过通孔阵列对从手指表面反射回来的反射光进行准直和调制，并将反射光导引至滤光层，该反射光经过滤光层的滤波后被指纹传感器接收，所述指纹传感器可以进一步对接收到的该反射光进行检测，以实现指纹识别。
为了实现悬空采集指纹图像，可以增大通孔阵列中每个通孔的尺寸，并且增大指纹传感器中每个光学感应单元的尺寸，以此来增大光通量，提升手指反射到指纹传感器的信号量。
图6示出了由指纹识别装置和显示屏构成的屏下指纹识别系统的另一种结构示意图。该指纹识别系统基于微透镜成像的光路设计原理，具体地，如图6所示，该指纹识别装置包括由透镜和滤波层构成的光学组件以及指纹传感器，该滤波层位于该透镜的下方。显示屏发出的光线在显示屏上方的待检测手指表面发生反射，通过透镜对从手指表面反射回来的反射光进行调制，并将反射光导引至滤光层，该反射光经过滤光层的滤波后被指纹传感器接收，所述指纹传感器可以进一步对接收到的该反射光进行检测，以实现指纹识别。
为了实现悬空采集指纹图像，可以增大透镜的尺寸，并且增大指纹传感器的尺寸，以此来增大光通量，提升手指反射到指纹传感器的信号量。
应当理解，图5或图6中的指纹识别装置仅是一种示例性的结构，在具体实现上，该光学组件的滤光层的位置并不局限在通孔阵列/透镜的下方；以通孔阵列为例，在一种替代实施例中，该滤光层也可以设置在通孔 阵列和显示屏之间，即位于通孔阵列上方；或者，光学组件可以包括两层滤光层，二者分别设置在通孔阵列的上方和下方。在其他替代实施例中，该滤光层也可以集成到通孔阵列内部，甚至也可以省略掉，本申请对此不做限制。
在具体实现上，指纹识别装置中的指纹传感器可以排布在柔性连接电路板(Flexible Printed Circuit board，FPC)上，即指纹识别装置可以包括FPC。
为了进一步提高指纹图像质量，结合图6，本申请实施例还提供了指纹识别装置的另一结构图。图7示出了由该指纹识别装置和显示屏构成的指纹识别系统的结构图。如图7所示，该指纹识别装置包括由透镜和滤波层构成的光学组件以及指纹传感器，该滤波层位于该透镜的下方。在图7中，该光学组件包括两个透镜，并且每个透镜都具有独立的指纹传感器，也就是说，FPC上并列排布两个指纹传感器，显示屏发出的光线在显示屏上方的待检测手指表面发生反射形成两组光路，该两组光路分别通过不同的透镜进行调制，并将该两组光路引至滤光层，该两组光路经过滤光层的滤波后分别被各自的指纹传感器接收，指纹传感器可以进一步对各自光路中的反射光进行检测，以实现指纹识别。
在一种可能的实现方式中，该两个指纹传感器可以具有不同的焦距或不同的光圈。较长焦距的指纹传感器可以快速捕获距离较远的指纹图像，较短焦距的指纹传感器则可以快速捕获较近的指纹图像；光圈的实际直径较大的可以快速捕获距离较远的指纹图像，光圈的实际直径较小的则可以快速捕获较近的指纹图像。因此，图7所示的指纹识别装置可以实现清晰的成像，同时，可以扩大景深，增强图像的解析力，增强手指的纹路信息，以更好地实现悬空指纹图像采集。
可选地，该两个指纹传感器在排布上还可以在一定范围之内，使的两个个指纹传感器的视场角(angle of view，FOV)接近重合，并可以利用图像处理算法将2个指纹传感器采集到的图像进行特殊的合并处理。
应当理解，图7中的指纹识别装置仅是一种示例性的结构，在具体实现上，该指纹识别装置可以包括多个透镜和与多个透镜一一对应的指纹传感器，该多个指纹传感器可以并排分布在FPC上，该多个指纹传感器中至少有两个指纹传感器可以具有不同的焦距和不同的光圈。还应理解，每个光路中的滤波层可以是单独设置，也可以是所有的光路使用同一个滤波 层，本申请实施例对此不够成限定。
在本申请实施例中，所公开的指纹传感器不但可以用于使用光学感应来捕获和检测与人相关联的手指或手掌的图案，还可以用于使用光学感应或其他感应机制来检测通过“活体手指”检测机制所捕获的或检测到的指纹或手掌的图案是否来自活着的人的手。该检测机制可以基于例如不同光学波长下血液的不同光吸收行为，事实上，由于活着的人的自然移动或运动(有意或无意的)或当血液流过与心跳相连的人体时的脉动，这个人的手指通常是移动着或伸展着的。在一个实现中，由于心跳/血流变化，指纹传感器可以检测来自手指或手掌的返回的光的变化，从而检测在表现为手指或手掌的物体中是否存在活着的心跳。
图4至图7中所提供的指纹识别装置可对应于本申请方法实施例中的执行主体，并且该指纹识别装置中的各个单元的上述和其它操作和/或功能分别为了实现图2和图3中各方法的相应流程，为了简洁，在此不再赘述。
可选地，本申请实施例还提供了一种指纹识别系统，该指纹识别系统可以包括上述各种实施例中的指纹识别装置和显示屏。
可选地，该指纹识别系统可以是终端设备，包括但不限于手机、电脑、多媒体机和游戏机。
可选地，该指纹识别系统中的显示屏可以是OLED显示屏。
图8是根据本申请实施例提供的终端设备500的示意性框图。图8所示的终端设备500包括：射频(Radio Frequency，RF)电路510、存储器520、其他输入设备530、显示屏540、传感器550、音频电路560、I/O子系统570、处理器580、以及电源590等部件。本领域技术人员可以理解，图8中示出的终端设备结构并不构成对终端设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。本领领域技术人员可以理解显示屏540属于用户界面(User Interface，UI)，且终端设备500可以包括比图示或者更少的用户界面。
下面结合图8对终端设备500的各个构成部件进行具体的介绍：
RF电路510可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器580处理；另外，将设计上行 的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路510还可以通过无线通信与网络和其他设备通信。存储器520可用于存储软件程序以及模块，处理器580通过运行存储在存储器520的软件程序以及模块，从而执行终端设备500的各种功能应用以及数据处理。存储器520可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据终端设备500的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器520可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
其他输入设备530可用于接收输入的数字或字符信息，以及产生与终端设备500的用户设置以及功能控制有关的信号输入。具体地，其他输入设备530可包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由屏幕形成的触摸敏感表面的延伸)等中的一种或多种。其他输入设备530与I/O子系统570的其他输入设备控制器571相连接，在其他设备输入控制器571的控制下与处理器580进行信号交互。
显示屏540可用于显示由用户输入的信息或提供给用户的信息以及终端设备500的各种菜单，还可以接受用户输入。具体的显示屏540可以是触控屏，可包括显示面板541，以及触控面板542。触控面板542可覆盖显示面板541，用户可以根据显示面板541显示的内容(该显示内容包括但不限于，软键盘、虚拟鼠标、虚拟按键、图标等等)，在显示面板541上覆盖的触控面板542上或者附近进行操作，触控面板542检测到在其上或附近的操作后，通过I/O子系统570传送给处理器580以确定用户输入，随后处理器580根据用户输入通过I/O子系统570在显示面板541上提供相应的视觉输出。虽然在图8中，触控面板542与显示面板541是作为两个独立的部件来实现终端设备500的输入和输入功能，但是在某些实施例中，可以将触控面板542与显示面板541集成而实现终端设备500的输入和输出功能。
终端设备500还可包括至少一种传感器550，例如，该传感器550可 以是位于显示屏540下或显示屏540内的指纹传感器，也就是本申请实施例中的指纹识别装置。
音频电路560、扬声器561，麦克风562可提供用户与终端设备500之间的音频接口。音频电路560可将接收到的音频数据转换后的信号，传输到扬声器561，由扬声器561转换为声音信号输出；另一方面，麦克风562将收集的声音信号转换为信号，由音频电路560接收后转换为音频数据，再将音频数据输出至RF电路510以发送给比如另一手机，或者将音频数据输出至存储器520以便进一步处理。
I/O子系统570用来控制输入输出的外部设备，可以包括其他设备输入控制器571、传感器控制器572、显示控制器573。可选的，一个或多个其他输入控制设备控制器571从其他输入设备530接收信号和/或者向其他输入设备530发送信号，其他输入设备530可以包括物理按钮(按压按钮、摇臂按钮等)、拨号盘、滑动开关、操纵杆、点击滚轮、光鼠(光鼠是不显示可视输出的触摸敏感表面，或者是由屏幕形成的触摸敏感表面的延伸)。值得说明的是，其他输入控制设备控制器571可以与任一个或者多个上述设备连接。所述I/O子系统570中的显示控制器573从显示屏540接收信号和/或者向显示屏540发送信号。显示屏540检测到用户输入后，显示控制器573将检测到的用户输入转换为与显示在显示屏540上的用户界面对象的交互，即实现人机交互。传感器控制器572可以从一个或者多个传感器550接收信号和/或者向一个或者多个传感器550发送信号。
处理器580是终端设备500的控制中心，利用各种接口和线路连接整个终端设备的各个部分，通过运行或执行存储在存储器520内的软件程序和/或模块，以及调用存储在存储器520内的数据，执行终端设备500的各种功能和处理数据，从而对终端设备进行整体监控。可选的，处理器580可包括一个或多个处理单元；优选的，处理器580可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器580中。该处理器580可以用来执行本申请方法实施例中的各个步骤。
终端设备500还包括给各个部件供电的电源590(比如电池)，优选 的，电源可以通过电源管理系统与处理器580逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗等功能。
尽管未示出，终端设备500还可以包括摄像头、蓝牙模块等，在此不再赘述。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
本领域普通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电路，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的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的电路、支路和单元，可以通过其它的方式实现。例如，以上所描述的支路是示意性的，例如，该单元的划分，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，例如多个单元或组件可以结合或者可以集成到一个支路，或一些特征可以忽略，或不执行。
所述集成的单元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)执行本申请各个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(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请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，都应涵盖在本申请的保护范围之内。因此，本申请的 保护范围应以该权利要求的保护范围为准。

Claims (23)

  1. 一种指纹识别方法，其特征在于，包括：
    在用户的手指接近终端设备的显示屏的过程中，确定所述手指与所述显示屏之间的距离是否小于或等于第一阈值；
    若所述距离小于或等于所述第一阈值，采集所述手指的指纹图像。
  2. 根据权利要求1所述的方法，其特征在于，所述若所述距离小于或等于所述第一阈值，采集所述手指的指纹图像，包括：
    若第一次确定所述距离小于或等于所述第一阈值，采集所述手指从所述距离开始靠近所述显示屏时的多次指纹图像；
    所述方法还包括：
    若所述多次指纹图像的差异在第一范围之内，对所述多次指纹图像进行处理，以完成指纹识别操作。
  3. 根据权利要求1或2所述的方法，其特征在于，所述在用户的手指接近终端设备的显示屏的过程中，确定所述手指与所述显示屏之间的距离是否小于或等于第一阈值，包括：
    在所述手指接近所述显示屏的过程中，所述显示屏检测所述距离，并确定所述距离是否小于或等于所述第一阈值；
    所述方法还包括：
    若所述距离小于或等于所述第一阈值，所述显示屏触发所述终端设备的指纹识别装置采集所述手指的指纹图像。
  4. 根据权利要求3所述的方法，其特征在于，在所述显示屏检测所述距离时，所述显示屏处于悬空状态。
  5. 根据权利要求1或2所述的方法，其特征在于，所述方法由所述终端设备的指纹识别装置执行。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述在用户的手指接近终端设备的显示屏的过程中，确定所述手指与所述显示屏之间的距离是否小于或等于第一阈值，包括：
    检测所述手指的反射光的信号量的大小；
    若所述信号量超过第二阈值，确定所述距离小于或等于所述第一阈值。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，在确定所 述手指与所述显示屏之间的距离是否小于或等于第一阈值之前，所述方法还包括：
    若所述终端设备的体位发生变化，所述终端设备的指纹识别装置唤醒所述显示屏。
  8. 根据权利要求1至6中任一项所述的方法，其特征在于，在确定所述手指与所述显示屏之间的距离是否小于或等于第一阈值之前，所述方法还包括：
    若所述终端设备的体位未发生变化，根据用户的触摸输入，唤醒所述终端设备的显示屏。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述显示屏为有机发光二极管OLED显示屏。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述终端设备的指纹识别装置检测的所述手指的反射光为可见光或不可见光。
  11. 一种指纹识别装置，其特征在于，所述装置包括：
    指纹传感器，用于在用户的手指与终端设备的显示屏之间的距离小于或等于第一阈值时，采集所述手指的指纹图像。
  12. 根据权利要求11所述的装置，其特征在于，所述装置还包括：
    处理电路，用于在所述手指接近所述显示屏的过程中，确定所述手指与所述显示屏之间的距离是否小于或等于所述第一阈值。
  13. 根据权利要求11所述的装置，其特征在于，所述指纹传感器具体用于在所述手指与所述显示屏之间的距离小于或等于所述第一阈值时，根据所述显示屏的触发，采集所述手指的指纹图像。
  14. 根据权利要求11至13中任一项所述的装置，其特征在于，所述装置还包括：
    光学组件，所述光学组件设置在所述指纹传感器的上方。
  15. 根据权利要求14所述的装置，其特征在于，所述光学组件包括通孔阵列，所述通孔阵列用于将所述手指的反射光指向所述指纹传感器的光学感应单元上。
  16. 根据权利要求14所述的装置，其特征在于，所述光学组件包括透镜，所述透镜用于将所述手指反射的光调制到所述指纹传感器的光学感应单元上。
  17. 根据权利要求16所述的装置，其特征在于，所述装置包括多个指纹传感器，所述多个指纹传感器中的每个指纹传感器分别对应独立的透镜，所述多个指纹传感器并排分布在柔性连接板FPC上。
  18. 根据权利要求17所述的装置，其特征在于，所述多个指纹传感器中至少两个指纹传感器对应的透镜的焦距不同。
  19. 根据权利要求17或18所述的装置，其特征在于，所述多个指纹传感器中的任两个相邻指纹传感器之间的距离小于或等于第三阈值。
  20. 根据权利要求17至19中任一项所述的装置，其特征在于，所述装置还包括处理电路，所述处理电路用于对所述多个指纹传感器采集的所述手指的指纹图像进行合并处理。
  21. 根据权利要求14至20中任一项所述的装置，其特征在于，所述光学组件包括滤波层，所述滤波层用于将所述手指的反射光中的可见光或不可见光滤出，并指向所述指纹传感器的光学感应单元上。
  22. 一种终端设备，其特征在于，包括如权利要求11至21中任一项所述的指纹识别装置和显示屏，所述指纹识别装置设于所述显示屏的下方。
  23. 根据权利要求22所述的终端设备，其特征在于，所述显示屏为有机发光二极管OLED显示屏。
PCT/CN2018/109331 2018-10-08 2018-10-08 指纹识别方法、装置和终端设备 WO2020073166A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/109331 WO2020073166A1 (zh) 2018-10-08 2018-10-08 指纹识别方法、装置和终端设备
CN201880001620.3A CN109496310B (zh) 2018-10-08 2018-10-08 指纹识别方法、装置和终端设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/109331 WO2020073166A1 (zh) 2018-10-08 2018-10-08 指纹识别方法、装置和终端设备

Publications (1)

Publication Number Publication Date
WO2020073166A1 true WO2020073166A1 (zh) 2020-04-16

Family

ID=65713822

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/109331 WO2020073166A1 (zh) 2018-10-08 2018-10-08 指纹识别方法、装置和终端设备

Country Status (2)

Country Link
CN (1) CN109496310B (zh)
WO (1) WO2020073166A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111723689A (zh) * 2020-06-02 2020-09-29 深圳阜时科技有限公司 屏下光学检测系统及电子设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110377139A (zh) * 2019-06-04 2019-10-25 努比亚技术有限公司 一种终端控制方法、终端及计算机可读存储介质
CN111881719B (zh) * 2020-06-09 2024-04-16 青岛奥美克生物信息科技有限公司 非接触式生物识别引导装置、方法以及生物特征识别系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104751106A (zh) * 2013-12-30 2015-07-01 比亚迪股份有限公司 指纹传感器及指纹传感器的控制方法
CN105488464A (zh) * 2015-11-26 2016-04-13 小米科技有限责任公司 指纹识别方法及装置
CN106462756A (zh) * 2016-09-17 2017-02-22 深圳市汇顶科技股份有限公司 指纹采集装置及方法、终端设备及屏幕亮灭的控制方法
CN106980832A (zh) * 2017-03-22 2017-07-25 上海创功通讯技术有限公司 指纹识别方法及装置
CN107944361A (zh) * 2017-11-15 2018-04-20 维沃移动通信有限公司 一种用于移动终端的指纹扫描方法和装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104598870A (zh) * 2014-07-25 2015-05-06 北京智膜科技有限公司 基于智能移动信息设备的指纹活体检测方法
CN108345826A (zh) * 2017-01-24 2018-07-31 创智能科技股份有限公司 指纹验证方法与电子装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104751106A (zh) * 2013-12-30 2015-07-01 比亚迪股份有限公司 指纹传感器及指纹传感器的控制方法
CN105488464A (zh) * 2015-11-26 2016-04-13 小米科技有限责任公司 指纹识别方法及装置
CN106462756A (zh) * 2016-09-17 2017-02-22 深圳市汇顶科技股份有限公司 指纹采集装置及方法、终端设备及屏幕亮灭的控制方法
CN106980832A (zh) * 2017-03-22 2017-07-25 上海创功通讯技术有限公司 指纹识别方法及装置
CN107944361A (zh) * 2017-11-15 2018-04-20 维沃移动通信有限公司 一种用于移动终端的指纹扫描方法和装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111723689A (zh) * 2020-06-02 2020-09-29 深圳阜时科技有限公司 屏下光学检测系统及电子设备
CN111723689B (zh) * 2020-06-02 2023-09-12 深圳阜时科技有限公司 屏下光学检测系统及电子设备

Also Published As

Publication number Publication date
CN109496310B (zh) 2021-03-19
CN109496310A (zh) 2019-03-19

Similar Documents

Publication Publication Date Title
US20200097699A1 (en) Fingerprint identification apparatus and electronic device
US20200349332A1 (en) Hybrid optical and capacitive sensor
US10318786B2 (en) Integration of touch screen and fingerprint sensor assembly
WO2020077506A1 (zh) 指纹识别方法、装置及具有指纹识别功能的终端设备
US10936840B2 (en) Optical sensor with angled reflectors
EP3465399B1 (en) Optical collimators for under-screen optical sensor module for on-screen fingerprint sensing
US10410037B2 (en) Under-screen optical sensor module for on-screen fingerprint sensing implementing imaging lens, extra illumination or optical collimator array
EP3254235B1 (en) Under-screen optical sensor module for on-screen fingerprint sensing
CN109478083B (zh) 具有力感测能力的光学指纹传感器
WO2020082380A1 (zh) 指纹识别装置和电子设备
US10055637B2 (en) Optical sensor with substrate light filter
WO2019178793A1 (zh) 屏下生物特征识别装置和电子设备
EP3608829A1 (en) In-screen biological feature recognition apparatus and electronic device
KR20190006374A (ko) 복수의 수광 센서간의 간섭을 차단하기 위한 차광 부재를 포함하는 이미지 센서 및 이미지 센서를 포함하는 전자 장치
US20190129530A1 (en) Under display biometric sensor
EP3796208A1 (en) Fingerprint recognition apparatus and electronic device
WO2020177083A1 (zh) 指纹识别的方法、装置和终端设备
WO2020073166A1 (zh) 指纹识别方法、装置和终端设备
CN108235750A (zh) 指纹识别系统的按压检测方法、装置和终端设备
WO2020220219A1 (zh) 生物特征识别装置、方法和电子设备
US10558838B2 (en) Optimized scan sequence for biometric sensor
US11417141B2 (en) In-screen fingerprint identification apparatus and electronic device
CN210534801U (zh) 指纹识别装置和电子设备
WO2020253615A1 (zh) 指纹处理方法及电子设备
WO2021093721A1 (zh) 一种指纹识别方法和电子设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18936650

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18936650

Country of ref document: EP

Kind code of ref document: A1