WO2020093355A1 - 液晶显示指纹模组、指纹识别方法、电子设备及存储介质 - Google Patents

液晶显示指纹模组、指纹识别方法、电子设备及存储介质 Download PDF

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Publication number
WO2020093355A1
WO2020093355A1 PCT/CN2018/114757 CN2018114757W WO2020093355A1 WO 2020093355 A1 WO2020093355 A1 WO 2020093355A1 CN 2018114757 W CN2018114757 W CN 2018114757W WO 2020093355 A1 WO2020093355 A1 WO 2020093355A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
liquid crystal
light
sensor
film
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Application number
PCT/CN2018/114757
Other languages
English (en)
French (fr)
Inventor
谢浩
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 CN201880002303.3A priority Critical patent/CN109564630A/zh
Priority to PCT/CN2018/114757 priority patent/WO2020093355A1/zh
Publication of WO2020093355A1 publication Critical patent/WO2020093355A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms

Definitions

  • Embodiments of the present application relate to identification technology, and in particular, to a liquid crystal display fingerprint module, fingerprint identification method, electronic device, and storage medium.
  • OLED Organic Light-Emitting Diode
  • liquid crystal display Liquid Crystal Display, referred to as LCD
  • LCD liquid Crystal Display
  • the embodiments of the present application provide a liquid crystal display fingerprint module, a fingerprint recognition method, an electronic device, and a storage medium, so as to realize the under-screen optical fingerprint recognition of the LCD.
  • An embodiment of the present application provides a liquid crystal display fingerprint module, including: a display module, a fingerprint light source, and a fingerprint sensor; wherein, the display module includes: a liquid crystal panel and a backlight module;
  • the liquid crystal panel is located above the backlight module;
  • the backlight module includes: a first film material, a light guide plate, a second film material and a backlight, the light guide plate includes a light guide body, a first protrusion and A second raised portion; the first film is located on the side of the light guide body facing the liquid crystal panel, the second film is located on the side of the light guide body facing away from the liquid crystal panel;
  • the side of the light guide body is provided with the backlight;
  • the first film material has a through hole in the field of view of the fingerprint sensor, so that the first protrusion extends to a side of the first film material close to the liquid crystal panel;
  • the second film has a through hole in the field of view of the fingerprint sensor, so that the end of the second protrusion facing away from the liquid crystal panel faces the photosensitive surface of the fingerprint sensor; the fingerprint After being reflected, the light emitted by the light source enters the photosensitive surface of the fingerprint sensor through the light guide plate.
  • An embodiment of the present application also provides an electronic device, including: the above-mentioned liquid crystal display fingerprint module.
  • An embodiment of the present application also provides a fingerprint identification method, including:
  • fingerprint identification is performed according to the data of the second preset block on the photosensitive surface; the number of blocks of the first preset block is smaller than the number of blocks of the second preset block number.
  • An embodiment of the present application also provides a fingerprint identification method, including:
  • the induction diode determines whether the finger is pressed
  • fingerprint recognition is performed according to the data on the photosensitive surface of the fingerprint sensor; the sensing diode and the fingerprint sensor are located in the same sensor.
  • An embodiment of the present application also provides a fingerprint identification device, including:
  • the determining module is used to determine whether the finger is pressed according to the data of the first preset block on the photosensitive surface of the fingerprint sensor;
  • the identification module is used to perform fingerprint identification based on the data of the second preset block on the photosensitive surface if a finger is pressed; the number of blocks in the first preset block is smaller than the second preset area The number of blocks in the block.
  • An embodiment of the present application also provides a fingerprint identification device, including:
  • a determining module configured to determine whether the finger is pressed according to the light intensity information detected by the induction diode
  • the detection module is used for fingerprint recognition based on the data on the photosensitive surface of the fingerprint sensor if the finger is pressed; the sensing diode and the fingerprint sensor are located in the same sensor.
  • An embodiment of the present application further provides an electronic device, including: a memory and a processor; the memory is connected to the processor;
  • the memory is used to store program instructions
  • the processor is configured to execute any of the fingerprint identification methods described above when executing the program instructions stored in the memory.
  • An embodiment of the present application further provides a computer-readable storage medium, characterized in that the storage medium stores a computer program, and when the computer program is executed by a processor, any of the fingerprint identification methods described above is implemented.
  • An embodiment of the present application provides an under-screen fingerprint identification system, which is suitable for under-screen optical fingerprint detection under a liquid crystal display module with a backlight module.
  • the under-screen fingerprint identification system includes a fingerprint light source and a fingerprint sensor;
  • the fingerprint light source is used to provide light for fingerprint detection
  • the fingerprint sensor is used to detect a fingerprint image of a finger pressed above the liquid crystal display module
  • the field of view of the fingerprint sensor is located in the liquid crystal display module Display area
  • the liquid crystal display module includes a liquid crystal panel and a backlight module provided on the back of the liquid crystal panel, the backlight module includes a light guide plate having a first convex portion and a second convex portion, the first The convex portion is provided within the field of view of the fingerprint sensor, and the second convex portion faces the photosensitive surface of the fingerprint sensor;
  • the light emitted by the fingerprint light source is formed in the finger and the return light enters the photosensitive surface of the fingerprint sensor through the first convex portion and the second convex portion of the light guide plate.
  • Embodiments of the present application provide a liquid crystal display fingerprint module, a fingerprint recognition method, an electronic device, and a storage medium
  • the liquid crystal display fingerprint module may include: a display module, a fingerprint light source, and a fingerprint sensor; the display module includes a liquid crystal panel And a backlight module, the liquid crystal panel is located above the backlight module; the backlight module includes a light guide plate and a backlight, the light guide plate includes a light guide body, a first protrusion and a second protrusion; the light guide The side of the body is provided with the backlight; the first protrusion extends to the side of the liquid crystal panel facing away from the cover plate; the end of the second protrusion facing away from the liquid crystal panel faces the photosensitive surface of the fingerprint sensor; the fingerprint After being reflected, the light emitted by the light source enters the photosensitive surface of the fingerprint sensor through the light guide plate.
  • the liquid crystal display module can provide a light source for fingerprint detection by setting a fingerprint light source, and the light reflected by the finger is incident on the photosensitive surface of the fingerprint sensor through the convex portion of the light guide plate in the backlight module, and then generated on the photosensitive surface
  • the fingerprint image used for fingerprint recognition realizes the optical fingerprint recognition under the screen of the LCD.
  • FIG. 1 is a schematic diagram 1 of a stack of a liquid crystal display fingerprint module provided by an embodiment of the present application;
  • FIG. 2 is a top view 1 of an electronic device provided with an LCD fingerprint module according to an embodiment of the present application;
  • FIG. 3 is a top plan view 2 of an electronic device provided with an LCD fingerprint module according to an embodiment of the present application;
  • FIG. 4 is a second schematic diagram 2 of a stacked LCD fingerprint module according to an embodiment of the present application.
  • FIG. 5 is a positional relationship diagram of a backlight source, a fingerprint light source, and a light guide plate adopted by an embodiment of the present application;
  • FIG. 6 is a schematic diagram 1 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application;
  • FIG. 7 is a second schematic layout diagram of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application;
  • FIG. 8 is a schematic diagram 3 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application;
  • FIG. 9 is a schematic diagram 4 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application;
  • FIG. 10 is a schematic diagram 3 of a stack of a liquid crystal display fingerprint module provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram 4 of a stack of a liquid crystal display fingerprint module provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram 1 of a layout of a supplementary light source on each side of a second protrusion of a light guide plate provided by an embodiment of the present application;
  • FIG. 13 is a second schematic layout diagram of a supplementary light source on each side of a second protrusion of a light guide plate according to an embodiment of the present application;
  • FIG. 14 is a schematic diagram 3 of a layout of a supplementary light source on each side of a second protrusion of a light guide plate provided by an embodiment of the present application;
  • 15 is a schematic structural diagram 1 of an electronic device according to an embodiment of the present application.
  • 16 is a flowchart 1 of a fingerprint identification method provided by an embodiment of the present application.
  • 17 is a schematic diagram of the work of each component in the implementation process of a fingerprint identification method provided by an embodiment of the present application.
  • FIG. 19 is a flowchart 3 of a fingerprint identification method provided by an embodiment of the present application.
  • 21 is a schematic diagram of the work of each component in the implementation process of another fingerprint identification method provided by an embodiment of the present application.
  • FIG. 22 is a flowchart 2 of another fingerprint identification method provided by an embodiment of the present application.
  • FIG. 23 is a schematic structural diagram of a fingerprint identification device provided by an embodiment of the present application.
  • FIG. 24 is a schematic structural diagram of another fingerprint identification device provided by an embodiment of the present application.
  • FIG. 25 is a second structural diagram of an electronic device according to an embodiment of the present application.
  • the following embodiments of the present application provide a liquid crystal display fingerprint module, a fingerprint recognition method, an electronic device, and a storage medium, which can be applied to any under-screen optical fingerprint recognition with an LCD, such as a smartphone, notebook computer, wearable device, home appliance, etc. Functional electronic devices.
  • the optical fingerprint under the screen of the LCD can be realized in a local area preset in the LCD.
  • FIG. 1 is a schematic diagram 1 of a stack of a liquid crystal display fingerprint module provided by an embodiment of the present application.
  • the liquid crystal display fingerprint module may include: a display module 1, a fingerprint light source 2 and a fingerprint sensor 3; wherein, the display module 1 includes: a liquid crystal panel 12 and a backlight module 13.
  • the liquid crystal panel 12 is located above the backlight module 13.
  • the display module 1 may further include a cover 11, and the liquid crystal panel 12 may be located between the cover 11 and the backlight module 13.
  • the backlight module 13 includes a first film, a light guide plate 131, a second film and a backlight 132.
  • the light guide plate 131 includes a light guide body 1311, a first protrusion 1312 and a second protrusion 1313.
  • the first film is located on the side of the light guide body 1311 facing the liquid crystal panel 12, and the second film is located on the side of the light guide body 1311 facing away from the liquid crystal panel 12.
  • the side end of the light guide body 1311 is provided with a backlight 132.
  • the first film material has a through hole in the field of view of the fingerprint sensor 3, so that the first protrusion 1312 extends to the side of the first film material close to the liquid crystal panel 12.
  • the second film material has a through hole in the field of view of the fingerprint sensor 3, so that the end of the second protrusion 1313 facing away from the liquid crystal panel 12 faces the photosensitive surface of the fingerprint sensor 3. That is, the photosensitive surface of the fingerprint sensor 3 faces the end of the second protrusion 1313 facing away from the liquid crystal panel 12.
  • the field of view of the fingerprint sensor 3 may be, for example, the field of view corresponding to the field of view 31 shown in FIG. 1.
  • the light emitted by the fingerprint light source 2 is reflected and enters the photosensitive surface of the fingerprint sensor 3 through the light guide plate 131.
  • the display module 1 may be referred to as an LCD display module, and the cover 11 may be a glass cover.
  • the backlight 132 in the backlight module 13 can provide light to the liquid crystal panel 12, and the liquid crystal panel 12 can realize the display function under the illumination of the light emitted by the backlight 132.
  • the backlight 132 is located at the side end of the light guide body 1311 of the light guide plate 131 and is used to enter the liquid crystal panel 12 through the light guide plate 131.
  • the backlight 132 may be a white light emitting diode (Light Emitting Diode, LED for short).
  • the light guide plate 131 Since the light guide plate 131 has the first convex portion 1312 and the second convex portion 1313, the light guide plate 131 may be referred to as a special-shaped light guide plate.
  • the fingerprint light source 2 is a light source for generating a fingerprint image. After the light emitted by the fingerprint light source 2 is reflected by a finger pressed on the cover plate 11, it can pass through the cover plate 11, the liquid crystal panel 12, the first protrusion 1312, and the first The two protrusions 1313 are incident on the photosensitive surface of the fingerprint sensor 3 provided on the side of the second protrusion 1313 facing away from the liquid crystal panel 12 to generate fingerprint image data for fingerprint recognition on the photosensitive surface of the fingerprint sensor 3.
  • the fingerprint sensor 3 may be referred to as an optical sensor, an image sensor, an optical fingerprint sensor, an optical sensor, or a fingerprint detection sensor.
  • the liquid crystal display fingerprint module may include: a display module, a fingerprint light source and a fingerprint sensor; the display module includes a liquid crystal panel and a backlight module, the liquid crystal panel is located above the backlight module; the backlight
  • the module includes a first film material, a light guide plate, a second film material and a backlight, the light guide plate includes a light guide body, a first convex portion and a second convex portion; the first film material is located on the light guide body towards On one side of the liquid crystal panel, the second film material is located on the side of the light guide body facing away from the liquid crystal panel; the side end of the light guide body is provided with the backlight; the first film material is viewed from the fingerprint sensor Within the field, there is a through hole for the first protrusion to extend to the side of the first film close to the liquid crystal panel; the second film has a through hole in the field of view of the fingerprint sensor The end of the second protrusion facing away from the liquid crystal panel faces the photosensitive surface
  • the liquid crystal display module can provide a light source for fingerprint detection by setting a fingerprint light source, and the light reflected by the finger is incident on the photosensitive surface of the fingerprint sensor through the convex portion of the light guide plate in the backlight module, and then generated on the photosensitive surface
  • the fingerprint image used for fingerprint recognition realizes the optical fingerprint recognition under the screen of the LCD.
  • FIG. 2 is a top view 1 of an electronic device provided with an LCD fingerprint module according to an embodiment of the present application.
  • the display screen of the electronic device has a display area 160 and a non-display area 170.
  • the display area 160 refers to an area where the liquid crystal panel 12 is laid under the cover 11 in the display screen.
  • the display area 160 may display a first virtual key 111, a second virtual key 112, and a third virtual key 113.
  • the first virtual key 111 may be a virtual return key
  • the second virtual key 112 may be a virtual home screen key
  • the third virtual key 113 may be a virtual task key.
  • the return key can be used to exit the application
  • the home screen key can be used to return to the home screen interface
  • the task key can be used to display the running program.
  • the first virtual button 111, the second virtual button 112, and the third virtual button 113 may be located in the chin area of the display area, also called a lower partial area.
  • the fingerprint sensor shown in FIG. 1 may be provided below the display screen corresponding to the second virtual key 112.
  • the design of the stacks in its area can be seen in Figure 1 above, and will not be repeated here.
  • the first virtual key 111, the second virtual key 112 and the third virtual key 113 are displayed in the display area 112, and the fingerprint sensor 3 is located below the display screen corresponding to the second virtual key 112, which can make the second virtual key press as a fingerprint
  • the indication of the area also reduces the fill light requirement displayed by the fingerprint pressing area.
  • the non-display area 170 is an area where the liquid crystal panel 12 is not arranged below the cover plate 11 in the display screen.
  • the non-display area 170 on the top of the electronic device further includes an earpiece 180 and a light sensor 190.
  • a volume key 150 and a power key 140 are also provided on the frame of the electronic device.
  • FIG. 3 is a top plan view 2 of an electronic device provided with an LCD fingerprint module according to an embodiment of the present application.
  • the same points in FIG. 3 as those in FIG. 2 are not repeated here.
  • the fingerprint detection area 114 in the display area 160, the area where the first virtual key 111, the second virtual key 112, and the third virtual key 113 are displayed may be referred to as the fingerprint detection area 114.
  • the fingerprint detection area 114 may be set as a non-display area, that is, only the first virtual button 111 and the second virtual key are displayed in the fingerprint detection area
  • the button 112 and the third virtual button 113 do not display the content such as video or image. In this way, the display fill light requirement in the fingerprint detection area can be reduced, and the fill light cost can be reduced.
  • the fingerprint light source 2 can be set in any way.
  • the light emitted by the main fingerprint light source 2 can be incident on the finger, and after being reflected by the finger, it can pass through the light guide plate 131 may be incident on the photosensitive surface of the fingerprint sensor 3.
  • the setting of the fingerprint light source 2 will be described as an example as follows.
  • the fingerprint light source 2 may be located under the cover 11 in the chin area of the electronic device. That is, the fingerprint light source 2 may be located at a vacant position on the side of the cover plate 11 facing the liquid crystal panel 12.
  • the fingerprint light source 2 may be attached to the surface of the vacant position of the side of the cover plate 11 facing the liquid crystal panel 12, that is, the lower surface, by optical glue in a flat or oblique manner.
  • the refractive index of the optical glue can be the same as that of the cover plate 11, or the difference between the refractive index of the optical glue and the cover plate 11 is within a preset range, which can reduce the light emitted by the fingerprint light source 2 under the cover plate 11.
  • the proportion of the light reflected off the surface improves the utilization rate of the fingerprint light source 2, so that the light emitted by the fingerprint light source 2 can be irradiated to the finger as much as possible to realize fingerprint recognition and ensure the accuracy of fingerprint recognition.
  • FIG. 1 shows the flat attachment method of the fingerprint light source 2.
  • the fingerprint light source 2 can be attached to the lower surface of the cover plate 11 at the vacant position in a flat attachment manner through an optical glue 4.
  • the light exit surface of 2 may be parallel to the lower surface of the cover plate 11. Adopting the flat bonding method to fit the fingerprint light source 2 makes the assembly more convenient, and can make the structural tolerance of the liquid crystal display fingerprint module better controlled.
  • FIG. 4 is a second schematic diagram 2 of a stacked LCD fingerprint module provided by an embodiment of the present application.
  • This FIG. 4 shows the oblique sticking method of the fingerprint light source 2.
  • the fingerprint light source 2 can be attached to the lower surface of the cover plate 11 at the vacant position through the optical glue 4 in an oblique sticking manner, so that the fingerprint light source 2 There is a preset angle between the light exit surface and the cover 11.
  • Adopting the oblique sticking method to attach the fingerprint light source 2 and the cover plate 11 can make the light emitted by the fingerprint light source 2 exit to the cover plate 11 at a predetermined angle, so as to prevent the light from exiting in a direction away from the fingerprint sensor 3, thereby improving the light Utilization.
  • the fingerprint light source 2 may also be located at the side end of the light guide body 1311. Since the backlight 132 is also located at the side end of the light guide body 1311, in this example, the fingerprint light source 2 can emit light to the finger through the light guide plate 131 for fingerprint recognition.
  • FIG. 5 is a positional relationship diagram of a backlight source, a fingerprint light source, and a light guide plate adopted by an embodiment of the present application.
  • the fingerprint light source 2 may also be disposed on the side end of the light guide body 1311 of the light guide plate 131, and the fingerprint light source 2 and the backlight 132 may be distributed on the side end of the light guide body 1311 , So that the fingerprint light source 2 can make the light incident on the finger by the light guide of the light guide plate 131.
  • a fingerprint light source 2 is provided at the symmetrical position of the side end of the light guide body 1311, which can ensure the fingerprint detection effect when the finger is pressed at different angles on the LCD screen.
  • the embodiments of the present application also provide various layout examples of the fingerprint light source 2 , So that the fingerprint light source 2 can be symmetrically distributed.
  • the fingerprint light source 2 may be an independent light source, a plurality of independent light sources, or a band light source composed of a plurality of light sources.
  • FIG. 6 is a schematic diagram 1 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application. If an independent fingerprint light source 2 is provided, as shown in FIG. 6, the fingerprint light source 2 may be the lower position of the display screen corresponding to the second virtual button 112.
  • FIG. 7 is a second schematic layout diagram of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application. If two independent fingerprint light sources 2 are provided, as shown in FIG. 7, the two fingerprint light sources 2 may be respectively located at two symmetrical positions below the display screen corresponding to the second virtual button 112.
  • FIG. 8 is a schematic diagram 3 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application. If three independent fingerprint light sources 2 are provided, as shown in FIG. 8, the three fingerprint light sources 2 may be respectively located at a lower position of the display screen corresponding to the second virtual button 112 and two symmetric positions of the lower position.
  • FIG. 9 is a schematic diagram 4 of a layout of a fingerprint module in an electronic device with a liquid crystal display fingerprint module adopted by an embodiment of the present application. If a band-shaped fingerprint light source 2 composed of a plurality of light sources is provided, as shown in FIG. 9, the band-shaped fingerprint light source 2 may be located in the area below the display screen corresponding to the second virtual button 112. The end positions are symmetrical, that is, the distance from the lower position of the display screen corresponding to the second virtual button 112 is the same.
  • the number of fingerprint light sources 2 can also be increased to increase the amount of fingerprint detection signal and the accuracy of fingerprint detection.
  • the fingerprint light source 2 may be an infrared light source.
  • the infrared light source as the fingerprint light source 2 can prevent visible light from the display screen from interfering with fingerprint detection and ensure the accuracy of fingerprint detection.
  • the infrared light source is invisible and will not affect the display of the display screen, that is, the display effect of the display screen can be ensured while ensuring the accuracy of fingerprint detection.
  • the infrared light source may be, for example, an infrared LED light source, an infrared vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL for short), an infrared laser diode (Laser Diode), or the like.
  • an infrared LED light source an infrared vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL for short), an infrared laser diode (Laser Diode), or the like.
  • VCSEL Vertical Cavity Surface Emitting Laser
  • Laser Diode Laser Diode
  • the fingerprint light source 2 can be modulated, the signal detected by the fingerprint sensor 3 can be demodulated and then transmitted to the control process unit.
  • the fingerprint light source 2 can be turned on or off by using a preset modulation frequency, thereby realizing the modulation of the light emitted by the fingerprint light source 2. Since most of the light in the environment can be regarded as an optical signal with a constant frequency or a very slow frequency, the modulation of the fingerprint light source 2 can well shield the influence of strong light in the environment.
  • the light emitted by the modulated fingerprint light source 2 has a specific frequency, that is, the preset modulation frequency. Therefore, the signal collected by the fingerprint sensor 3 will also include the signal of the preset modulation frequency.
  • a demodulation circuit may be used to demodulate the signal collected by the fingerprint sensor 3 to obtain a fingerprint signal, which is then transmitted to the control processing unit for fingerprint identification.
  • the control processing unit may be a processing unit of a fingerprint identification chip or a processor of an electronic device, such as a central processing unit.
  • the first film material includes: a composite film 133.
  • the composite film 133 is located on the side of the light guide body 1311 facing the liquid crystal panel 12; the composite film 133 has a through hole in the field of view of the fingerprint sensor 3 to extend the first protrusion 1312 until the first film material approaches One side of the liquid crystal panel 12.
  • the field of view of the fingerprint sensor 3 may be, for example, the field of view corresponding to the field of view 31 shown in FIG. 10.
  • the first protrusion 1312 can pass through the through hole in the composite film 133 and extend to the side of the first film material close to the liquid crystal panel 12.
  • a through hole is formed in the composite film 133, which can avoid the restriction feature of the composite film 133 to the light required for fingerprint detection and ensure fingerprint detection.
  • the first raised portion 1312 is extended through the through hole in the composite film 133 to the side of the first film material close to the liquid crystal panel 12 to realize the filling of the through hole, avoiding the display position corresponding to the through hole in the composite film 133 Light loss to ensure the display effect.
  • the first film material further includes: a light enhancement film 134; the light enhancement film 134 is located between the composite film 133 and the light guide body 1311.
  • the brightness enhancement film 134 has a through hole in the field of view of the fingerprint sensor 3 to extend the first protrusion 1312 to the side of the first film material close to the liquid crystal panel 12.
  • the field of view of the fingerprint sensor 3 may be, for example, the field of view corresponding to the field of view 31 shown in FIG. 10.
  • the first raised portion 1312 may pass through the through hole in the light-enhancing film 134 and the through hole in the composite film 133 in sequence, and extend to the side of the first film material close to the liquid crystal panel 12.
  • a through hole is formed in the light-increasing film 134 to prevent the physical prism of the light-increasing film 134 from obstructing the light in the fingerprint detection, and to ensure effective fingerprint detection.
  • the first convex portion 1312 is extended to the side of the first film material close to the liquid crystal panel 12 through the through holes in the light-enhancing film 134 and the through holes in the composite film 133 in order to fill the through holes and avoid the light-enhancing film 134
  • the light loss of the display position corresponding to the through hole of the through hole and the through hole on the composite film 133 can also ensure the display effect.
  • the first film material includes: a diffusion film 135; the diffusion film 135 is located between the light enhancement film 134 and the light guide body 1311.
  • the diffusion film 135 has a through hole in the field of view of the fingerprint sensor 3 to extend the first protrusion 1312 to the side of the first film material close to the liquid crystal panel 12.
  • the field of view of the fingerprint sensor 3 may be, for example, the field of view corresponding to the field of view 31 shown in FIG.
  • the first convex portion 1312 may pass through the through hole in the diffusion film 135, the through hole in the light-enhancing film 134, and the through hole in the composite film 133 in order, and extend to the side of the first film material close to the liquid crystal panel 12.
  • a through hole is formed in the diffusion film 135 to prevent the diffusion film 135 from fogging the fingerprint detection light, so as to effectively detect the light reflected by the finger and ensure effective fingerprint detection.
  • the first convex portion 1312 is extended through the through holes in the diffusion film 135, the through holes in the brightness enhancement film 134, and the through holes in the composite film 133 to the side of the first film material close to the liquid crystal panel 12, in order to realize the through holes
  • the filling avoids the light loss of the display positions corresponding to the through holes in the diffusion film 135, the through holes in the light enhancement film 134, and the through holes in the composite film 133, and also ensures the display effect.
  • the second film material includes: a first reflective film 136.
  • the first reflective film 136 is located on the side of the light guide body 1311 facing away from the liquid crystal panel 12.
  • the first reflective film 136 has a through hole in the field of view of the fingerprint sensor 3, so that the end of the second protrusion 1313 facing away from the liquid crystal panel 12 faces the photosensitive surface of the fingerprint sensor 3.
  • a through hole is formed in the first reflective film 136 so that the second protrusion 1313 faces away from the liquid crystal panel 12 through the through hole in the first reflective film 136 toward the photosensitive surface of the fingerprint sensor 3, It can ensure that the fingerprint detection signal is transmitted to the photosensitive surface of the fingerprint sensor 3 through the second protrusion 1313, avoiding the influence of the first reflective film 136 on fingerprint detection, and ensuring effective fingerprint detection.
  • the backlight module 13 further includes: a support plate 137; the support plate 137 is located on a side of the first reflective film 136 facing away from the liquid crystal panel 12.
  • the supporting plate 137 may be a steel plate for supporting the backlight module 13, the cover plate 11 and the liquid crystal panel 12.
  • the supporting plate 137 has a through hole within the field of view of the fingerprint sensor 3, so that the end of the second protrusion 1313 facing away from the liquid crystal panel 12 faces the photosensitive surface of the fingerprint sensor 3.
  • a through hole is formed in the support plate 137 so that the second protrusion 1313 faces away from the end of the liquid crystal panel 12 and passes through the through hole on the first reflective film 136 and the through hole on the support plate 137 in order toward the fingerprint
  • the photosensitive surface of the sensor 3 can ensure that the fingerprint detection signal is transmitted to the photosensitive surface of the fingerprint sensor 3 through the second protrusion 1313, avoiding the influence of the support plate 137 on the fingerprint detection and ensuring effective fingerprint detection.
  • An embodiment of the present application also provides a liquid crystal display fingerprint module.
  • 11 is a schematic diagram 4 of a stack of a liquid crystal display fingerprint module provided by an embodiment of the present application.
  • the LCD fingerprint module further includes: a fill light component; the fill light component may include: a fill light source 5; .
  • the fill light source 5 can be attached to the side surface of the second protrusion 1313 by optical glue, for example.
  • the supplementary light source 5 By providing the supplementary light source 5 on the side of the second protrusion 1313, the light loss caused by the stacked openings in the backlight module 13 can be compensated for, and the display effect is ensured.
  • the cross section of the second convex portion 1313 parallel to each surface of the lower layer in the backlight module 13 may have a preset shape, such as a triangle, a quadrangle, a hexagon, and other polygons. If the cross section of the second convex portion 131 is polygonal, the second convex portion 131 may have the supplementary light source 5 uniformly on the side surfaces corresponding to the sides of the polygon. In order to ensure the uniformity of the fill light, for example, a fill light source 5 may be provided on each side.
  • the layout of the supplementary light source 5 will be described below with triangles, quadrilaterals, and hexagons as cross-sectional shapes of the second protrusions 1313, respectively.
  • FIG. 12 is a schematic diagram 1 of a layout of a supplementary light source on each side of a second protrusion of a light guide plate provided by an embodiment of the present application.
  • a supplementary light source 5 may be provided on each side of the triangle.
  • FIG. 13 is a second schematic layout diagram of a supplementary light source on each side of a second protrusion of a light guide plate according to an embodiment of the present application.
  • a supplementary light source 5 may be provided on each side of the quadrangle.
  • FIG. 14 is a schematic diagram 3 of a layout of a supplementary light source on each side of a second protrusion of a light guide plate provided by an embodiment of the present application.
  • a supplementary light source 5 may be provided on each side of the hexagon.
  • the fill light source 5 shown above may be the same light source as the backlight 132, for example, all LEDs of the same white light.
  • the same fill light source as that of the backlight 132 can be used to keep the fill light and the backlight light of the backlight module constant, ensuring the fill light effect of the display screen.
  • the light and chromaticity of the backlight and the fill light source can be calibrated, so that the control current of the fill light source and the control current of the backlight source are synchronized Control, so that under different backlight brightness, the fill light and the backlight light source are guaranteed to be consistent, thereby ensuring the fill light effect and improving the display effect.
  • the light supplement assembly further includes: a second reflective film 6; the second reflective film 6 is located on the side of the second convex portion 1313 facing the photosensitive surface of the fingerprint sensor 3.
  • the second reflective film 6 may adopt a separate solution, and it is an independent part from the second protrusion 1313.
  • the second reflective film 6 may also be formed by coating a reflective material on the side of the second convex portion 1313 facing the photosensitive surface of the fingerprint sensor 3 to form a reflective film.
  • the second reflective film 6 may have a through hole in the field of view of the fingerprint sensor 3, so that the light emitted by the second protrusion 1313 can pass through the through hole and be transmitted to the photosensitive surface of the fingerprint sensor 3.
  • a through hole is formed in the second reflective film 6 to avoid the influence of the second reflective film 6 on the light transmission of fingerprint detection and to ensure effective fingerprint detection.
  • the light supplement assembly further includes: a filter 7; the filter 7 is located between the second reflective film 6 and the photosensitive surface of the fingerprint sensor 3.
  • a filter 7 is provided between the second reflective film 6 and the photosensitive surface of the fingerprint sensor 3 to filter out visible light, so as to avoid interference of the visible light of the backlight module and the ambient visible light on the fingerprint detection and ensure Fingerprint detection accuracy.
  • An embodiment of the present application may also provide an electronic device having the above-mentioned liquid crystal display fingerprint module.
  • 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 15, the electronic device may include: a housing 151 and a liquid crystal display fingerprint module 152. The LCD fingerprint module 152 is located in the housing 151.
  • the liquid crystal display fingerprint module 152 may be any of the liquid crystal display fingerprint modules shown in any of FIGS. 1 to 15 described above.
  • the electronic device may include any one of the liquid crystal display fingerprint modules mentioned above. Since the liquid crystal display fingerprint module can realize the under-screen optical fingerprint of the LCD, the electronic device can realize the under-screen optical fingerprint of the LCD.
  • An embodiment of the present application also provides an under-screen fingerprint identification system, which can be applied to an under-screen optical fingerprint detection under a liquid crystal display module with a backlight module.
  • the under-screen fingerprint identification system includes a fingerprint light source and a fingerprint sensor;
  • the fingerprint light source is used to provide light for fingerprint detection
  • the fingerprint sensor is used to detect a fingerprint image of a finger pressed above the liquid crystal display module
  • the field of view of the fingerprint sensor is located in the display area of the liquid crystal display module.
  • the liquid crystal display module includes a liquid crystal panel and a backlight module disposed on the back of the liquid crystal panel, the backlight module includes a light guide plate having a first protrusion and a second protrusion, the first protrusion is provided Within the field of view of the fingerprint sensor, the second convex portion faces the photosensitive surface of the fingerprint sensor.
  • the light emitted by the fingerprint light source is formed in the finger, and the return light enters the photosensitive surface of the fingerprint sensor through the first convex portion and the second convex portion of the light guide plate.
  • the backlight module may further include a first film material and a second film material, the first film material is located on a side of the light guide plate facing the liquid crystal panel, and the second film material is located on the light guide plate Located on the side facing away from the liquid crystal panel, wherein the first film material and the second film material respectively have a first through hole and a second through hole in the field of view of the fingerprint sensor, the first through hole is used to The first protrusion is extended to a surface of the first film close to the liquid crystal panel; the second through hole is used to extend the end of the second protrusion away from the liquid crystal panel to the photosensitive surface of the fingerprint sensor.
  • the backlight module may further include a backlight
  • the light guide plate further includes a light guide body, and the first protrusion and the second protrusion extend from both sides of the light guide body The backlight is provided at the side end of the light guide body.
  • the first film material includes at least one of a composite film, a light-enhancing film, and a diffusion film, which is disposed between the light guide plate and the liquid crystal panel, and is within the field of view of the fingerprint sensor Each has through holes for extending the first protrusion to a side of the first film material close to the liquid crystal panel.
  • the second film includes a first reflective film; the first reflective film is located on a side of the light guide plate facing away from the liquid crystal panel, and has a through hole in the field of view of the fingerprint sensor For extending the end of the second protrusion away from the liquid crystal panel to the photosensitive surface of the fingerprint sensor.
  • the under-screen fingerprint recognition system further includes a fill light component; the fill light component includes a fill light source; the fill light source is located on the side of the second protrusion.
  • the light supplementing assembly further includes a second reflective film; the second reflective film is located on a side of the second protrusion facing the photosensitive surface of the fingerprint sensor.
  • the light supplementing component further includes a filter; the filter is located between the second reflective film and the photosensitive surface of the fingerprint sensor.
  • the liquid crystal display module further includes a cover plate, and the fingerprint light source is located at a vacant position on the side of the cover plate facing the liquid crystal panel; wherein, the fingerprint light source is in flat contact with the cover plate
  • the lower surface of the vacant position is adhered so that the light emitting surface of the fingerprint light source is parallel to the lower surface of the cover plate; or, the fingerprint light source is adhered to the lower surface of the vacant position on the cover plate by obliquely attaching, Therefore, there is a preset angle between the light emitting surface of the fingerprint light source and the lower surface of the cover plate.
  • the fingerprint light source is provided at a side end of the light guide body, and the fingerprint light source is an infrared light source.
  • the under-screen fingerprint recognition system provided by the embodiment of the present application can provide a light source for fingerprint detection by setting a fingerprint light source, and the light reflected by the finger is incident on the photosensitive surface of the fingerprint sensor through the convex portion of the light guide plate in the backlight module Then, a fingerprint image for fingerprint recognition is generated on the photosensitive surface, which realizes the optical fingerprint recognition under the screen of the LCD.
  • the embodiments of the present application provide the following fingerprint identification methods to first determine whether the finger is pressed, and in the case of finger pressing, perform fingerprint identification based on the data of the photosensitive surface of the fingerprint sensor.
  • the data on the photosensitive surface of the fingerprint sensor can also be called fingerprint image or fingerprint data.
  • the fingerprint recognition method provided by the embodiments of the present application can be applied to the LCD fingerprint module with any one of the above-mentioned FIG. 1 to FIG. 15 to improve the speed of the on-screen fingerprint recognition of the LCD in the locked state.
  • the fingerprint identification method provided in the embodiments of the present application can also be applied to electronic devices having other fingerprint modules, so as to increase the speed of other types of off-screen fingerprint identification in the locked state.
  • FIG. 16 is a flowchart 1 of a fingerprint identification method provided by an embodiment of the present application.
  • the method may be implemented by a processor of an electronic device or a processing unit of a fingerprint identification chip such as a control processing unit through software and / or hardware.
  • the fingerprint identification method may include the following:
  • S1601 Determine whether the finger is pressed according to the data of the first preset block on the photosensitive surface of the fingerprint sensor.
  • the first predetermined block may be, for example, a partial block on the photosensitive surface, such as a central block and / or a peripheral block on the photosensitive surface.
  • the peripheral blocks can be evenly distributed around the photosensitive surface.
  • the number of blocks pressed in the first preset block may be determined according to the data of the first preset block to determine whether the finger is pressed. For example, if the number of pressed blocks is greater than or equal to the preset number, it can be determined that the finger is pressed; otherwise, if the number of pressed blocks is less than the preset number, it can be determined that the finger is not pressed .
  • fingerprint recognition is performed according to the data of the second preset block on the photosensitive surface; the number of blocks in the first preset block is smaller than the number of blocks in the second preset block .
  • the second predetermined block may be, for example, all blocks on the photosensitive surface. Of course, it may also be a partial block, as long as the number of the second preset blocks is greater than the number of the first preset zone levels.
  • the liquid crystal display fingerprint module shown in any of the above FIGS. 1 to 15 is taken as an example for description as follows.
  • 17 is a schematic diagram of the work of each component in the implementation process of a fingerprint identification method provided by an embodiment of the present application.
  • the control processing unit may modulate the current signal of the fingerprint light source 2 through a modulation circuit, and the driving circuit drives the fingerprint light source 2 according to the modulated current signal, so that the fingerprint light source 2 emits the modulation The optical signal of the preset modulation frequency used by the circuit.
  • the light signal of the preset modulation frequency emitted by the fingerprint light source 2 is reflected by the finger, and then passes through the cover plate 11, the liquid crystal panel 12, the first convex portion 1312 of the light guide plate 13, and the second convex of the light guide plate 13 in sequence
  • the raised portion 1313 and the like enter the sensing surface of the fingerprint sensor 3.
  • the data of the first preset block on the sensing surface of the fingerprint sensor 3 can be used, and the data of the first preset block can be demodulated by the modulation circuit according to the preset modulation frequency And transmit the demodulated signal to the control processing unit, and the control processing unit determines whether the finger is pressed according to the data of the first preset block.
  • the first predetermined block may include, for example, a central block 34, a peripheral block 31, a peripheral block 32, a peripheral block 33, and a peripheral block 34 on the sensing surface of the fingerprint sensor 3 shown in FIG. .
  • the peripheral block 31, the peripheral block 32, the peripheral block 33 and the peripheral block 34 may be located around the sensing surface of the fingerprint sensor 3.
  • control processing unit may obtain the data of the second preset block of the sensing surface of the fingerprint sensor 3 such as all the blocks through the demodulation circuit, and according to the data on the photosensitive surface Fingerprint identification is performed on the data of the second preset block.
  • FIG. 18 is a flowchart 2 of a fingerprint identification method provided by an embodiment of the present application.
  • the method performs fingerprint identification according to the data of the second preset block on the photosensitive surface in S1602 according to the data of the second preset block on the photosensitive surface Before the data is fingerprinted, it can also include:
  • the light intensity information detected by the light sensor can be obtained, and whether the light sensor is blocked is determined according to the light intensity information. For example, if the light intensity information is greater than or equal to a preset value, it can be determined that the light sensor is not Occlusion. On the contrary, if the light intensity information is less than the preset value, it can be determined that the light sensor is blocked.
  • the fingerprint identification according to the data of the second preset block on the photosensitive surface in S1602 may include:
  • the method provided in this embodiment can perform fingerprint recognition based on the data of the second preset block when it is determined that the light sensor is not blocked, which effectively avoids, for example, the false touch of the finger of the electronic device in the pocket, reducing unnecessary Operation.
  • FIG. 19 is a flowchart 3 of a fingerprint identification method provided by an embodiment of the present application. As shown in FIG. 19, based on the method shown in FIG. 16 or FIG. 18, the method may further include:
  • S1901 Determine the block pressing sequence in the first preset block.
  • the pressing sequence of the block can be determined according to the time information of each block in the first preset block.
  • S1902 Determine the direction of the sliding operation of the finger according to the order of pressing the blocks.
  • the sliding direction of the finger can be determined as the sliding direction from bottom to top.
  • the direction of the sliding operation of the finger can be determined as the sliding direction from top to bottom.
  • the block pressing sequence is the peripheral block 31, the central block 34, and the peripheral block 33 shown in FIG. 17 above, it can be determined that the sliding direction of the finger is the sliding direction from left to right.
  • the block pressing sequence is the peripheral block 33, the central block 34, and the peripheral block 31 shown in FIG. 17 above, it can be determined that the direction of the sliding operation of the finger is the sliding direction from right to left.
  • the method may further include:
  • the software function corresponding to the direction of the sliding operation is executed according to the direction of the sliding operation.
  • the software function corresponding to the direction of the sliding operation may be, for example, any software function such as returning to the upper interface or returning to the main menu.
  • Different sliding operation directions can correspond to different software functions.
  • the software function corresponding to the direction of the sliding operation is executed according to the direction of the sliding operation, and on the basis of implementing the fingerprint recognition, the navigation of the software function is realized, which improves the operation efficiency.
  • an embodiment of the present application may also provide a fingerprint identification method.
  • the method may further include:
  • the pressing force of the finger can be determined according to the size of the data of the first preset block. For example, if the data of the first preset block is greater than or equal to the preset value, it is determined that the pressing force of the finger is heavy pressing. If the data of the first preset block is smaller than the preset value, it is determined that the pressing force of the finger is light pressing.
  • the software function corresponding to the pressing force may be, for example, any software function such as returning to a superior interface or returning to a main menu. Different pressing strengths can correspond to different software functions.
  • the software function corresponding to the pressing strength is executed according to the pressing strength of the finger, and on the basis of realizing the fingerprint recognition, the navigation of the software function is realized, and the operation efficiency is improved.
  • FIG. 20 is a flowchart 1 of another fingerprint recognition method provided by an embodiment of the present application.
  • the method may be implemented by a processor of an electronic device or a processing unit of a fingerprint recognition chip, such as a control processing unit, through software and / or hardware .
  • the fingerprint identification method may include the following:
  • the light intensity information is greater than or equal to a preset value, it may be determined that the finger is not pressed. On the contrary, if the light intensity information is less than the preset value, it can be determined that the finger is pressed.
  • the liquid crystal display fingerprint module shown in any of the above FIGS. 1 to 15 is taken as an example for description as follows.
  • 21 is a schematic diagram of the work of each component in the implementation process of another fingerprint identification method provided by an embodiment of the present application.
  • the control processing unit may modulate the current signal of the fingerprint light source 2 through a modulation circuit, and the driving circuit drives the fingerprint light source 2 according to the modulated current signal, so that the fingerprint light source 2 emits the modulation The optical signal of the preset modulation frequency used by the circuit.
  • the light signal of the preset modulation frequency emitted by the fingerprint light source 2 is reflected by the finger, and then passes through the cover plate 11, the liquid crystal panel 12, the first convex portion 1312 of the light guide plate 13, and the second convex of the light guide plate 13 in sequence
  • the starting portion 1313 and the like are incident on the sensing surface of the fingerprint sensor 3 and the sensing diode 36
  • the sensing diode 36 can be located on the same sensor or chip as the fingerprint sensor 3.
  • the light intensity information obtained by the sensing diode can be obtained by the control processing unit, and it is determined whether the light intensity information is within a preset range, and if the light intensity information is within the preset range, it is determined that the finger is pressed ; If the light intensity information is not within the preset range, it is determined that the finger is not pressed.
  • the control processing unit determines that the finger is pressed, the control processing unit can obtain the sensing surface of the fingerprint sensor 3 such as data of all blocks through the demodulation circuit, and perform fingerprinting based on the data of all blocks on the photosensitive surface Identify.
  • whether the finger is pressed can be determined according to the light intensity information detected by the sensing diode, and when the finger is pressed, fingerprint identification can be performed based on the data on the sensing surface, thereby reducing the amount of data processing , Improve the fingerprint recognition speed.
  • the sensor diode does not collect heart rate data, which improves the recognition speed and thus the fingerprint detection speed.
  • an embodiment of the present application may further provide a fingerprint identification method.
  • the method shown in FIG. 20 before performing fingerprint identification based on data on the photosensitive surface of the fingerprint sensor in S2002, the method further includes:
  • the method provided in this embodiment can perform fingerprint recognition based on the data of the sensing surface when it is determined that the light sensor is not blocked, effectively avoiding, for example, the misjudgment of the finger of the electronic device in the pocket, and reducing unnecessary operations.
  • FIG. 22 is a flowchart 2 of another fingerprint identification method provided by an embodiment of the present application. As shown in FIG. 22, before the above S2002 performs fingerprint recognition based on the data on the photosensitive surface of the fingerprint sensor, the method may further include:
  • S2201 Obtain heart rate data detected by the sensing diode.
  • the sensing diode when it is determined that the finger is pressed, the sensing diode can be controlled to collect heart rate data, and the heart rate data detected by the sensing diode can be obtained.
  • S2202 According to the heart rate data, determine whether the data on the photosensitive surface of the fingerprint sensor is living fingerprint data.
  • the control processing unit can also amplify and filter the heart rate data through the amplification and filtering circuit, and convert the heart rate data into a digital signal through an analog-to-digital converter, and The heart rate data of the digital signal determines whether the data on the photosensitive surface of the fingerprint sensor is living fingerprint data.
  • the above S2002 fingerprint identification based on the data on the photosensitive surface of the fingerprint sensor may include:
  • the method may further include:
  • fingerprint recognition can be performed based on the data on the photosensitive surface of the fingerprint sensor, which improves the accuracy of fingerprint recognition.
  • the user can know the current heart rate data.
  • the fingerprint identification device can be applied to an electronic device with fingerprint identification.
  • the electronic device includes: a display screen and a fingerprint sensor; the fingerprint sensor is located below the display screen.
  • the fingerprint identification device can be implemented by software and / or hardware, and can be integrated within the electronic device. As shown in FIG. 23, the fingerprint identification device 2300 includes:
  • the determining module 2301 is configured to determine whether the finger is pressed according to the data of the first preset block on the photosensitive surface of the fingerprint sensor.
  • the identification module 2302 is used to perform fingerprint identification based on the data of the second preset block on the photosensitive surface if the finger is pressed; the number of blocks of the first preset block is smaller than that of the second preset block The number of blocks.
  • the first preset block includes: a central block and / or a peripheral block of the photosensitive surface; the peripheral blocks are evenly distributed around the photosensitive surface.
  • the fingerprint identification device 2300 further includes:
  • the detection module is used to detect whether the light sensor is blocked.
  • the identification module 2302 is specifically configured to perform fingerprint identification based on the data of the second preset block if the light sensor is not blocked.
  • the determining module 2301 is also used to determine the order of pressing the blocks in the first preset block; and according to the order of pressing the blocks, determine the direction of the sliding operation of the finger.
  • the fingerprint identification device 2300 further includes:
  • the execution module is used to execute the software function corresponding to the direction of the sliding operation according to the direction of the sliding operation if the fingerprint recognition passes.
  • the fingerprint identification device provided in this embodiment can perform any of the fingerprint identification methods shown in FIG. 16 to FIG. 19, and the specific implementation and effective effects thereof can be referred to the above and will not be repeated here.
  • the fingerprint identification device can be applied to an electronic device with fingerprint identification.
  • the electronic device includes: a display screen and a fingerprint sensor; the fingerprint sensor is located below the display screen.
  • the fingerprint identification device can be implemented by software and / or hardware, and can be integrated within the electronic device. As shown in FIG. 24, the fingerprint identification device 2400 includes:
  • the determining module 2401 is configured to determine whether the finger is pressed according to the light intensity information detected by the sensing diode.
  • the identification module 2402 is specifically used to perform fingerprint identification based on the data on the photosensitive surface of the fingerprint sensor if the finger is pressed; the sensor diode and the fingerprint sensor are located in the same sensor.
  • the determination module 2401 is specifically configured to determine whether the light intensity information is within a preset range; if the light intensity information is within the preset range, determine the finger press; if the light intensity information is not within the preset range Inside, it is determined that the finger is not pressed.
  • the fingerprint identification device 2400 further includes:
  • the detection module is used to detect whether the light sensor is blocked.
  • the identification module 2402 is specifically configured to perform fingerprint identification based on data on the photosensitive surface of the fingerprint sensor if the light sensor is not blocked.
  • the fingerprint identification device 2400 further includes:
  • the obtaining module is used for obtaining the heart rate data detected by the induction diode.
  • the determining module 2401 is further configured to determine whether the data on the photosensitive surface of the fingerprint sensor is living fingerprint data according to the heart rate data.
  • the identification module 2402 is specifically configured to perform fingerprint identification based on the data on the photosensitive surface of the fingerprint sensor if the data on the photosensitive surface of the fingerprint sensor is living fingerprint data.
  • the fingerprint identification device 2400 further includes:
  • the output module is used to output the heart rate data.
  • the fingerprint identification device provided in this embodiment may execute any of the fingerprint identification methods shown in any of FIG. 20 to FIG. 22, and the specific implementation and effective effects thereof may refer to the above, and will not be repeated here.
  • FIG. 25 is a second structural diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 7, the electronic device 25 of this embodiment includes a memory 2501 and a processor 2502. The memory 2501 is connected to the processor 2502 through a bus.
  • the memory 2501 is used to store program instructions.
  • the processor 2502 is configured to execute the fingerprint identification method described in any of the above FIGS. 16-22 when calling the program instructions stored in the memory 2501.
  • An embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, which can be executed by the processor 2502 described in FIG. 25 to implement any of the above embodiments in any of FIGS. 16-22
  • a computer program which can be executed by the processor 2502 described in FIG. 25 to implement any of the above embodiments in any of FIGS. 16-22
  • the specific implementation and effective effect of the fingerprint identification method mentioned above can be referred to the above, and will not be repeated here.

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Abstract

一种液晶显示指纹模组、指纹识别方法、电子设备及存储介质。该液晶显示指纹模组包括显示模组（1）、指纹光源（2）及指纹传感器（3）；显示模组（1）中背光模组（13）包括导光板（131）和背光源（132），导光板（131）的第一凸起部（1312）延伸至第一膜材靠近液晶面板（12）的一面；第二凸起部（1313）背离液晶面板（12）的一端朝向指纹传感器（3）。本方案可实现LCD的屏下光学指纹识别。

Description

液晶显示指纹模组、指纹识别方法、电子设备及存储介质 技术领域
本申请实施例涉及识别技术，尤其涉及一种液晶显示指纹模组、指纹识别方法、电子设备及存储介质。
背景技术
随着电子技术的发展，电子设备的显示屏逐渐向全面屏发展，越来越高的屏占比，这使得目前主流的电容式指纹模组无处放置，屏下光学指纹应运而生。
目前，屏下光学指纹方案在有机发光二极管(Organic Light-Emitting Diode，简称OLED)显示屏的应用已经越来越多。OLED显示屏的屏下光学指纹方案，通过利用OLED显示屏本身的透光性以及屏幕自身的光照射手指后检测指纹。
然而，对于液晶显示器(Liquid Crystal Display，简称LCD)，由于其透光性差等确定，无法实现屏下光学指纹识别。
发明内容
本申请实施例提供一种液晶显示指纹模组、指纹识别方法、电子设备及存储介质，以实现LCD的屏下光学指纹识别。
本申请实施例提供一种液晶显示指纹模组，包括：显示模组、指纹光源及指纹传感器；其中，所述显示模组包括：液晶面板和背光模组；
所述液晶面板位于所述背光模组上方；所述背光模组包括：第一膜材、导光板、第二膜材和背光源，所述导光板包括导光本体、第一凸起部及第二凸起部；所述第一膜材位于所述导光本体朝向所述液晶面板的一侧，所述第二膜材位于所述导光本体位于背离所述液晶面板的一侧；所述导光本体的侧端设置有所述背光源；
所述第一膜材在所述指纹传感器的视场范围内，具有通孔，用以使得所 述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面；
所述第二膜材在所述指纹传感器的视场范围内，具有通孔，用以使得所述第二凸起部背离所述液晶面板的一端朝向所述指纹传感器的感光面；所述指纹光源发出的光线经反射后通过所述导光板入射至所述指纹传感器的感光面。
本申请实施例还提供一种电子设备，包括：上述液晶显示指纹模组。
本申请实施例还提供一种指纹识别方法，包括：
根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压；
若手指按压，则根据所述感光面上的第二预设区块的数据进行指纹识别；所述第一预设区块的区块个数小于所述第二预设区块的区块个数。
本申请实施例还提供一种指纹识别方法，包括：
根据感应二极管检测到的光强信息，确定所述手指是否按压；
若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；所述感应二极管与所述指纹传感器位于同一感应器内。
本申请实施例还提供一种指纹识别装置，包括：
确定模块，用于根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压；
识别模块，用于若手指按压，则根据所述感光面上的第二预设区块的数据进行指纹识别；所述第一预设区块的区块个数小于所述第二预设区块的区块个数。
本申请实施例还提供一种指纹识别装置，包括：
确定模块，用于根据感应二极管检测到的光强信息，确定所述手指是否按压；
检测模块，用于若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；所述感应二极管与所述指纹传感器位于同一感应器内。
本申请实施例还提供一种电子设备，包括：存储器和处理器；所述存储器和所述处理器连接；
所述存储器用于存储程序指令；
所述处理器，用于执行所述存储器存储的所述程序指令时执行上任一所述的指纹识别方法。
本申请实施例还提供一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述任一所述的指纹识别方法。
本申请实施例提供一种屏下指纹识别系统，适用于具有背光模组的液晶显示模组下方以进行屏下光学指纹检测，所述屏下指纹识别系统包括指纹光源和指纹传感器；
所述指纹光源用于提供指纹检测的光线，所述指纹传感器用于检测按压在所述液晶显示模组上方的手指的指纹图像，且所述指纹传感器的视场范围位于所述液晶显示模组的显示区域；
其中，所述液晶显示模组包括液晶面板和设置在所述液晶面板背面的背光模组，所述背光模组包括具有第一凸起部和第二凸起部的导光板，所述第一凸起部设置在所述指纹传感器的视场范围之内，所述第二凸起部朝向所述指纹传感器的感光面；
所述指纹光源发出的光线在手指形成在返回光通过所述导光板的第一凸起部和第二凸起部入射至所述指纹传感器的感光面。
本申请实施例提供一种液晶显示指纹模组、指纹识别方法、电子设备及存储介质，其中，液晶显示指纹模组可包括：显示模组、指纹光源及指纹传感器；该显示模组包括液晶面板和背光模组，该液晶面板位于该背光模组的上方；该背光模组包括导光板和背光源，该导光板包括导光本体、第一凸起部及第二凸起部；该导光本体的侧端设置有该背光源；该第一凸起部延伸至该液晶面板背离该盖板的一面；该第二凸起部背离该液晶面板的一端朝向该指纹传感器的感光面；该指纹光源发出的光线经反射后通过该导光板入射至该指纹传感器的感光面。该液晶显示模组可通过设置指纹光源为指纹检测提供光源，并通过背光模组中的导光板的凸起部将经手指反射后的光线入射至指纹传感器的感光面，继而在该感光面生成用以进行指纹识别的指纹图像，实现了LCD的屏下光学指纹识别。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下 面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种液晶显示指纹模组的叠层示意图一；
图2为本申请实施例提供的一种具有液晶显示指纹模组的电子设备的俯视图一；
图3为本申请实施例提供的一种具有液晶显示指纹模组的电子设备的俯视图二；
图4为本申请实施例提供的一种液晶显示指纹模组的叠层示意图二；
图5为本申请实施例通过的一种背光源和指纹光源与导光板的位置关系图；
图6为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图一；
图7为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图二；
图8为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图三；
图9为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图四；
图10为本申请实施例提供的一种液晶显示指纹模组的叠层示意图三；
图11为本申请实施例提供的一种液晶显示指纹模组的叠层示意图四；
图12为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图一；
图13为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图二；
图14为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图三；
图15为本申请实施例提供的一种电子设备的结构示意图一；
图16为本申请实施例提供的一种指纹识别方法的流程图一；
图17为本申请实施例提供的一种指纹识别方法的实现过程中的各部件的工作示意图；
图18为本申请实施例提供的一种指纹识别方法的流程图二；
图19为本申请实施例提供的一种指纹识别方法的流程图三；
图20为本申请实施例提供的另一种指纹识别方法的流程图一；
图21为本申请实施例提供的另一种指纹识别方法的实现过程中的各部件的工作示意图；
图22为本申请实施例提供的另一种指纹识别方法的流程图二；
图23为本申请实施例提供的一种指纹识别装置的结构示意图；
图24为本申请实施例提供的另一种指纹识别装置的结构示意图；
图25为本申请实施例提供的一种电子设备的结构示意图二。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本申请一部分实施例，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在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
本申请下述各实施例提供液晶显示指纹模组、指纹识别方法、电子设备及存储介质，可应用于智能手机、笔记本电脑、可穿戴设备、家电设备等任一具有LCD的屏下光学指纹识别功能的电子设备中。LCD的屏下光学指纹可以在LCD中预设的局部区域实现。
如下结合多个实例对本申请实施例提供的进行说明。
图1为本申请实施例提供的一种液晶显示指纹模组的叠层示意图一。如图1所示，该液晶显示指纹模组可包括：显示模组1、指纹光源2及指纹传感器3； 其中，显示模组1包括：液晶面板12、背光模组13。
液晶面板12位于背光模组13的上方。显示模组1还可包括：盖板11，液晶面板12便可位于盖板11和背光模组13之间。背光模组13包括：第一膜材、导光板131、第二膜材和背光源132。导光板131包括导光本体1311、第一凸起部1312及第二凸起部1313。该第一膜材位于导光本体1311朝向液晶面板12的一侧，该第二膜材位于导光本体1311位于背离液晶面板12的一侧。导光本体1311的侧端设置有背光源132。
该第一膜材在指纹传感器3的视场范围内，具有通孔，用以使得第一凸起部1312延伸至第一膜材靠近液晶面板12的一面。该第二膜材在指纹传感器3的视场范围内，具有通孔，用以使得第二凸起部1313背离液晶面板12的一端朝向指纹传感器3的感光面。即指纹传感器3的感光面朝向第二凸起部1313背离液晶面板12的一端。指纹传感器3的视场范围例如可以为图1中所示的视场角31对应的视场范围。
指纹光源2发出的光线经反射后通过导光板131入射至指纹传感器3的感光面。
在本实施例中，显示模组1可称为LCD的显示模组，盖板11可以为玻璃盖板。背光模组13中的背光源132可为液晶面板12提供光线，液晶面板12可在背光源132发出的光线照射下，实现显示功能。背光源132位于导光板131的导光本体1311的侧端，用以将光线，通过导光板131入射至液晶面板12。背光源132可以为白光的发光二极管(Light Emitting Diode，简称LED)。
由于导光板131具有第一凸起部1312和第二凸起部1313，则该导光板131可称为异形导光板。
指纹光源2为用于生成指纹图像的光源，指纹光源2发出的光线经过按压在盖板11上的手指的反射后，可依次通过盖板11、液晶面板12、第一凸起部1312以及第二凸起部1313，入射至设置于第二凸起部1313背离液晶面板12的一面的指纹传感器3的感光面，以在指纹传感器3的感光面生成用于指纹识别的指纹图像数据。其中，指纹传感器3可以称为光学传感器、图像传感器、光学指纹传感器、光学感应器或指纹检测感应器等。
本申请实施例提供的液晶显示指纹模组，可包括：显示模组、指纹光源及指纹传感器；该显示模组包括液晶面板和背光模组，该液晶面板位于该背 光模组的上方；该背光模组包括第一膜材、导光板、第二膜材和背光源，该导光板包括导光本体、第一凸起部及第二凸起部；该第一膜材位于该导光本体朝向该液晶面板的一侧，该第二膜材位于该导光本体位于背离该液晶面板的一侧；该导光本体的侧端设置有该背光源；该第一膜材在该指纹传感器的视场范围内，具有通孔，用以使得该第一凸起部延伸至第一膜材靠近该液晶面板的一面；该第二膜材在该指纹传感器的视场范围内，具有通孔，用以使得该第二凸起部背离该液晶面板的一端朝向该指纹传感器的感光面；该指纹光源发出的光线经反射后通过该导光板入射至该指纹传感器的感光面。该液晶显示模组可通过设置指纹光源为指纹检测提供光源，并通过背光模组中的导光板的凸起部将经手指反射后的光线入射至指纹传感器的感光面，继而在该感光面生成用以进行指纹识别的指纹图像，实现了LCD的屏下光学指纹识别。
图2为本申请实施例提供的一种具有液晶显示指纹模组的电子设备的俯视图一。参见图2可知，电子设备的显示屏上具有显示区域160和非显示区域170。
显示区域160指的是，显示屏中盖板11的下方布局有液晶面板12的区域。显示区域160可显示有第一虚拟按键111、第二虚拟按键112和第三虚拟按键113。该第一虚拟按键111可以为虚拟的返回键，第二虚拟按键112可以为虚拟的主屏键，第三虚拟按键113可以为虚拟的任务键。该返回键可用于退出应用，该主屏键可用于回到主屏幕的界面，该任务键可用于显示正在运行的程序。图2中，第一虚拟按键111、第二虚拟按键112和第三虚拟按键113可位于显示区域的下巴区域，又称下部分区域。
若该第二虚拟按键112位于显示区域160中的下巴区域的中间位置，该第二虚拟按键112对应的显示屏的下方可具有上述图1所示指纹传感器。其区域各叠层的设计可参见上述图1，在此不再赘述。
显示区域112中显示有第一虚拟按键111、第二虚拟按键112和第三虚拟按键113，而指纹传感器3位于第二虚拟按键112对应的显示屏的下方，可使得第二虚拟按键作为指纹按压区域的指示，同时还降低指纹按压区域显示的补光要求。
非显示区域170为显示屏中盖板11的下方未布局液晶面板12的区域。电子设备顶部的非显示区域170中，还具有听筒180及光线感应器190。在电子设备的边框上还具有音量键150和电源键140。
需指出的是，第一虚拟按键111、第二虚拟按键112和第三虚拟按键113的相对位置、音量键150、电源键140、光线感应器190以及听筒180等的位置仅为一种可能的示例，在此不再赘述。
图3为本申请实施例提供的一种具有液晶显示指纹模组的电子设备的俯视图二。图3与上述图2相同之处不再赘述。如图3可知，在显示区域160中，显示有第一虚拟按键111、第二虚拟按键112以及第三虚拟按键113的区域可称为指纹检测区域114。在一些对显示需求较高的场合，如视频或图像的显示场景中，可将该指纹检测区域114设置为非显示区域，即在该指纹检测区域内仅显示第一虚拟按键111、第二虚拟按键112以及第三虚拟按键113，而不显示该视频或图像等内容。如此，可降低对该指纹检测区域内的显示补光要求，降低补光成本。
在本申请上述图1所提供的液晶显示指纹模组中，指纹光源2可才采用任一方式设置，主要指纹光源2发出的光线可入射至手指，并在由手指反射后，可通过导光板131入射至指纹传感器3的感光面即可。
如下通过示例对指纹光源2的设置进行说明。
在一种方式中，该指纹光源2可位于电子设备的下巴区域的盖板11下方。即该指纹光源2可位于盖板11朝向液晶面板12一侧的空缺位置。
指纹光源2可通过光学胶以平贴方式或斜贴方式贴合在盖板11朝向液晶面板12一侧的空缺位置的表面，即下表面。
该光学胶的折射率可与盖板11相同，或者，光学胶的折射率与盖板11的折射率的差值在预设范围内，可降低指纹光源2发出的光线在盖板11的下表面被反射掉的光线占比，提高指纹光源2的利用率，如此，可使得指纹光源2发出的光线尽可能多地照射至手指，实现指纹识别，保证了指纹识别的准确度。
上述图1示出了指纹光源2的平贴方式，参照图1，该指纹光源2可通过光学胶4，以平贴方式与盖板11上该空缺位置处的下表面贴合，该指纹光 源2的出光面可与盖板11的下表面平行。采用该平贴方式贴合指纹光源2，其装配更方便，可使得液晶显示指纹模组的结构公差更好控制。
图4为本申请实施例提供的一种液晶显示指纹模组的叠层示意图二。该图4示出了指纹光源2的斜贴方式，参照图4，指纹光源2可通过光学胶4，以斜贴方式与盖板11上该空缺位置处的下表面贴合，使得指纹光源2的出光面与盖板11存在预设的夹角。采用该斜贴方式贴合指纹光源2与盖板11，可使得指纹光源2发出的光线以预设的夹角，出射至盖板11，避免光线以背离指纹传感器3的方向出射，提高了光线利用率。
在另一种方式中，指纹光源2还可位于导光本体1311的侧端。由于背光源132也位于导光本体1311的侧端，因而，在该示例中，指纹光源2可通过导光板131向手指发出光线，用以进行指纹识别。
图5为本申请实施例通过的一种背光源和指纹光源与导光板的位置关系图。如图5所示，该实施例中，可将指纹光源2也设置在导光板131的导光本体1311的侧端，指纹光源2可与背光源132均分布在该导光本体1311的侧端，使得指纹光源2可借助导光板131的导光性将光线入入射至手指。例如，在该导光本体1311的侧端的对称位置分别设置一个指纹光源2，可保证了手指在LCD屏上不同角度按压下的指纹检测效果。
无论指纹光源是位于盖板11下方，还是导光本体1311的侧端，为保证手指在LCD屏上不同角度按压下的指纹检测效果，本申请实施例还提供了多种指纹光源2的布局示例，以使得指纹光源2可对称分布。该指纹光源2可以为一个独立的光源，也可以为多个独立的光源，还可以为多个光源组成的带状光源等。
图6为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图一。若设置一个独立的指纹光源2，如图6所示，指纹光源2可为第二虚拟按键112对应的显示屏的下方位置。
图7为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图二。若设置两个独立的指纹光源2，如图7所示，两个指纹光源2可分别位于第二虚拟按键112对应的显示屏的下方位置的两个对称位置。
图8为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指 纹模组的布局示意图三。若设置三个独立的指纹光源2，如图8所示，三个指纹光源2可分别位于第二虚拟按键112对应的显示屏的下方位置、以及该下方位置的两个对称位置。
图9为本申请实施例通过的一种具有液晶显示指纹模组的电子设备中指纹模组的布局示意图四。若设置多个光源组成的带状的指纹光源2，如图9所示，带状的指纹光源2可位于第二虚拟按键112对应的显示屏的下方区域，该带状的指纹光源2的两端位置对称，即距离第二虚拟按键112对应的显示屏的下方位置的距离相同。
需要说明的是，本实施例中，还可通过增加指纹光源2的数目提高指纹检测信号量，提高指纹检测的准确度。
可选的，如上任一实施例所涉及的指纹光源2可以为红外光源，采用该红外光源作为指纹光源2可避免显示屏的可见光对指纹检测干扰，保证指纹检测的准确度。并且，红外光源不可见，不会对显示屏的显示造成影响，即在保证指纹检测准确度的情况下，还可保证显示屏的显示效果。
该红外光源例如可以为红外LED光源、红外的垂直腔面发射激光器(Vertical Cavity Surface Emitting Laser，简称VCSEL)、红外的激光二极管(Laser Diode)等。
为避免环境中的强光对指纹检测的干扰，例如用户在室外的太阳底下，为了解决该问题，可通过对指纹光源2进行调制，对指纹传感器3检测的信号进行解调后传输给控制处理单元。例如，可采用预设的调制频率对指纹光源2进行开启或关闭，实现了指纹光源2发出光线的调制。由于环境中的光线绝大部分可视为频率不变的或频率非常缓慢的光信号，采用对指纹光源2进行调制，可以很好的屏蔽环境中强光的影响。
该调制后的指纹光源2发出的光线具备特定的频率即预设的调制频率，因而指纹传感器3所采集的信号也会包含该预设的调制频率的信号，为了获得最终有效的指纹信号，本申请实施例中，可采用解调电路将对指纹传感器3所采集的信号进行解调，得到指纹信号，继而将该指纹信号传输至控制处理单元，用以进行指纹识别。该控制处理单元可以为指纹识别芯片的处理单元，也可以为电子设备的处理器，如中央处理器。
本申请实施例还提供一种液晶显示指纹模组。图10为本申请实施例提供的一种液晶显示指纹模组的叠层示意图三。在上述图1或图4的基础上，该第一膜材包括：复合膜133。复合膜133位于该导光本体1311朝向液晶面板12的一侧；复合膜133在指纹传感器3的视场范围内，具有通孔，用以使得第一凸起部1312延伸至第一膜材靠近液晶面板12的一面。
指纹传感器3的视场范围例如可以为图10中所示的视场角31对应的视场范围。该第一凸起部1312可穿过该复合膜133上的通孔，延伸至第一膜材靠近液晶面板12的一面。
该实施例中，在复合膜133上开设通孔，可避免复合膜133对指纹检测所需的光线的约束特征，保证指纹检测。
将第一凸起部1312通过该复合膜133上的通孔延伸至第一膜材靠近液晶面板12的一面，实现了通孔的填充，避免了复合膜133上的通孔对应的显示位置的光损失，保证显示效果。
继续参照图10，可选的，第一膜材还包括：增光膜134；增光膜134位于复合膜133与导光本体1311之间。
增光膜134在指纹传感器3的视场范围内，具有通孔，用以使得第一凸起部1312延伸至第一膜材靠近液晶面板12的一面。
指纹传感器3的视场范围例如可以为图10中所示的视场角31对应的视场范围。该第一凸起部1312可依次穿过增光膜134上的通孔、该复合膜133上的通孔，延伸至第一膜材靠近液晶面板12的一面。
在该实施例中，在增光膜134上开设通孔，可避免增光膜134的物理棱镜对指纹检测中的光线的阻碍，保证有效的指纹检测。
将第一凸起部1312依次通过增光膜134上的通孔、复合膜133上的通孔延伸至第一膜材靠近液晶面板12的一面，实现了通孔的填充，避免了增光膜134上的通孔和复合膜133上的通孔对应的显示位置的光损失，还可保证显示效果。
继续参照上述图10，可选的，第一膜材包括：扩散膜135；扩散膜135位于增光膜134与导光本体1311之间。
扩散膜135在指纹传感器3的视场范围内，具有通孔，用以使得第一凸起部1312延伸至第一膜材靠近液晶面板12的一面。
指纹传感器3的视场范围例如可以为图10中所示的视场角31对应的视场 范围。该第一凸起部1312可依次穿过扩散膜135上的通孔、增光膜134上的通孔、复合膜133上的通孔，延伸至第一膜材靠近液晶面板12的一面。
在该实施例中，在扩散膜135上开设通孔，可避免扩散膜135对指纹检测光线的雾化，以有效检测经过手指反射的光线，保证有效的指纹检测。
将第一凸起部1312依次通过扩散膜135上的通孔、增光膜134上的通孔、复合膜133上的通孔延伸至第一膜材靠近液晶面板12的一面，实现了通孔的填充，避免了扩散膜135上的通孔、增光膜134上的通孔和复合膜133上的通孔对应的显示位置的光损失，还可保证显示效果。
继续参照上述图10，可选的，第二膜材包括：第一反射膜136。第一反射膜136位于导光本体1311背离液晶面板12的一侧。
第一反射膜136在指纹传感器3的视场范围内，具有通孔，用以使得第二凸起部1313背离液晶面板12的一端朝向指纹传感器3的感光面。
在该实施例中，在第一反射膜136开设通孔，使得第二凸起部1313背离液晶面板12的一端，通过该第一反射膜136上的通孔，朝向指纹传感器3的感光面，可保证了指纹检测的信号通过第二凸起部1313传输至指纹传感器3的感光面，避免第一反射膜136对指纹检测的影响，保证了有效地指纹检测。
可选的，背光模组13还包括：支撑板137；支撑板137位于第一反射膜136背离液晶面板12的一侧。支撑板137可以为钢板，用以对背光模组13以及盖板11、液晶面板12进行支撑。
支撑板137在指纹传感器3的视场范围内，具有通孔，用以使得第二凸起部1313背离液晶面板12的一端朝向指纹传感器3的感光面。
在该实施例中，在支撑板137开设通孔，使得第二凸起部1313背离液晶面板12的一端，依次通过第一反射膜136上的通孔、撑板137上的通孔，朝向指纹传感器3的感光面，可保证了指纹检测的信号通过第二凸起部1313传输至指纹传感器3的感光面，避免支撑板137对指纹检测的影响，保证了有效地指纹检测。
本申请实施例还提供一种液晶显示指纹模组。图11为本申请实施例提供的一种液晶显示指纹模组的叠层示意图四。在上述图1、图4或图10的基础上，液晶显示指纹模组还包括：补光组件；补光组件可包括：补光光源5； 补光光源5位于第二凸起部1313的侧面。补光光源5例如可通过光学胶贴合在第二凸起部1313的侧面。
通过在第二凸起部1313的侧面设置补光光源5可弥补背光模组13中各叠层开孔造成的光损失，保证显示效果。
该第二凸起部1313平行于背光模组13中各低层表面的截面可以为预设形状，例如三角形、四边形、六边形等多边形。若该第二凸起部131的截面为多边形，则第二凸起部131在多边形的各个边对应的侧面可均匀具有补光光源5。为保证补光光线的均匀，例如，在每个侧面上可设置有一个补光光源5。
如下分别以三角形、四边形以及六边形为第二凸起部1313的截面形状对补光光源5的布局进行说明。
图12为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图一。如图12可知，若导光板131的第二凸起部1313的截面为三角形，则可在三角形的每个侧面可设置一个补光光源5。
图13为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图二。如图13可知，若导光板131的第二凸起部1313的截面为四边形，则可在四边形的每个侧面可设置一个补光光源5。
图14为本申请实施例提供的一种导光板的第二凸起部的各侧面的补光光源的布局示意图三。如图14可知，若导光板131的第二凸起部1313的截面为六边形，则可在六边形的每个侧面可设置一个补光光源5。
可选的，如上所示的补光光源5可以为与背光源132相同的光源，例如均为同一种白光的LED。
采用与背光源132相同的补光光源，可使得补光光线与背光模组的背光光线一直，保证了显示屏的补光效果。
可选的，在本申请实施例所示的液晶显示指纹模组出厂前，可对背光源和补光光源的光线及色度进行校准，使得补光光源的控制电流与背光源的控制电流同步控制，使得不同背光亮度下，补光光线与背光光源保证一致，从而保证补光效果，提高显示效果。
继续参照上述图11，可选的，补光组件还包括：第二反射膜6；第二反射膜6位于第二凸起部1313朝向指纹传感器3的感光面的一侧。
第二反射膜6可采用分离的方案，其与第二凸起部1313互为独立的部分。第二反射膜6还可通过在第二凸起部1313朝向指纹传感器3的感光面的一侧，采用镀膜方式，涂布反射材料，以形成反射膜。
第二反射膜6上指纹传感器3的视场范围内，可具有通孔，用以使得第二凸起部1313射出的光线，可穿过该通孔，传输至指纹传感器3的感光面。
在第二反射膜6上开设通孔，可避免第二反射膜6对指纹检测的光线传输的影响，保证有效的指纹检测。
继续参照上述图11，可选的，补光组件还包括：滤光片7；滤光片7位于第二反射膜6与指纹传感器3的感光面之间。
该实施例中，在第二反射膜6与指纹传感器3的感光面之间设置滤光片7，可对可见光进行滤除，以避免背光模组的可见光以及环境可见光对指纹检测的干扰，保证指纹检测准确度。
本申请实施例还可提供一种具有上述液晶显示指纹模组的电子设备。图15为本申请实施例提供的一种电子设备的结构示意图。如图15所示，该电子设备可包括：外壳151和液晶显示指纹模组152。液晶显示指纹模组152位于外壳151内。
液晶显示指纹模组152可以为上述图1-图15中任一所示的液晶显示指纹模组。
该电子设备可包括上述任一所述的液晶显示指纹模组，由于液晶显示指纹模组可实现LCD的屏下光学指纹，可使得电子设备实现LCD的屏下光学指纹。
本申请实施例还提供一种屏下指纹识别系统，可适用于具有背光模组的液晶显示模组下方以进行屏下光学指纹检测，该屏下指纹识别系统包括指纹光源和指纹传感器；
该指纹光源用于提供指纹检测的光线，该指纹传感器用于检测按压在该液晶显示模组上方的手指的指纹图像，且该指纹传感器的视场范围位于该液晶显示模组的显示区域。
其中，该液晶显示模组包括液晶面板和设置在该液晶面板背面的背光模组，该背光模组包括具有第一凸起部和第二凸起部的导光板，该第一凸起部设置在该指纹传感器的视场范围之内，该第二凸起部朝向该指纹传感器的感 光面。
该指纹光源发出的光线在手指形成在返回光通过该导光板的第一凸起部和第二凸起部入射至该指纹传感器的感光面。
在一种实现方式中，该背光模组还可包括第一膜材和第二膜材，该第一膜材位于该导光板朝向该液晶面板的一侧，该第二膜材位于该导光板位于背离该液晶面板的一侧，其中，该第一膜材和该第二膜材在该指纹传感器的视场范围内分别具有第一通孔和第二通孔，该第一通孔用以使得该第一凸起部延伸至该第一膜材靠近该液晶面板的一面；该第二通孔用以使得该第二凸起部背离该液晶面板的一端延伸至该指纹传感器的感光面。
在另一种实现方式中，该背光模组还可包括背光源，且该导光板还包括导光本体，该第一凸起部和该第二凸起部从该导光本体两侧延伸而成，该背光源设置在该导光本体的侧端。
在又一种实现方式中，该第一膜材包括复合膜、增光膜和扩散膜中的至少一个，其设置在该导光板和该液晶面板之间，并且在该指纹传感器的视场范围内分别具有通孔，用以使得该第一凸起部延伸至该第一膜材靠近该液晶面板的一面。
在再一种实现方式中，该第二膜材包括第一反射膜；该第一反射膜位于该导光板背离该液晶面板的一侧，且其在该指纹传感器的视场范围内具有通孔，用以使得该第二凸起部背离该液晶面板的一端延伸至该指纹传感器的感光面。
在再一种可实现方式中，该屏下指纹识别系统还包括补光组件；该补光组件包括补光光源；该补光光源位于该第二凸起部的侧面。
在再一种可实现方式中，该补光组件还包括第二反射膜；该第二反射膜位于该第二凸起部朝向该指纹传感器的感光面的一侧。
在再一种可实现方式中，该补光组件还包括滤光片；该滤光片位于该第二反射膜与该指纹传感器的感光面之间。
在再一种可实现方式中，该液晶显示模组还包括盖板，该指纹光源位于该盖板朝向该液晶面板一侧的空缺位置；其中，该指纹光源通过平贴方式与该盖板上该空缺位置处的下表面贴合，使得该指纹光源的出光面与该盖板的下表面平行；或者，该指纹光源通过斜贴方式与该盖板上该空缺位置处的下 表面贴合，使得该指纹光源的出光面与该盖板的下表面存在预设的夹角。
可选的，该指纹光源设置在该导光本体的侧端，且该指纹光源为红外光源。
本申请实施例提供的屏下指纹识别系统，可通过设置指纹光源为指纹检测提供光源，并通过背光模组中的导光板的凸起部将经手指反射后的光线入射至指纹传感器的感光面，继而在该感光面生成用以进行指纹识别的指纹图像，实现了LCD的屏下光学指纹识别。
为提高锁屏下指纹检测速度，本申请实施例提供下述各指纹识别方法，以先确定手指是否按压，在手指按压的情况下，根据指纹传感器的感光面的数据进行指纹识别。该指纹传感器的感光面的数据还可称为指纹图像，或者指纹数据等。
需要说明的是，本申请实施例提供的指纹识别方法可适用于具有上述图1-图15中任一所示的液晶显示指纹模组，以提高锁屏状态下LCD的屏下指纹识别速度。本申请实施例提供的指纹识别方法还可适用于具有其它的指纹模组的电子设备，以提高锁屏状态下其它类型的屏下指纹识别速度。
图16为本申请实施例提供的一种指纹识别方法的流程图一，该方法可由电子设备的处理器，或者指纹识别芯片的处理单元如控制处理单元，通过软件和/或硬件的方式实现。如图16所示，该指纹识别方法可包括如下：
S1601、根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压。
该第一预设区块例如可以为该感光面上的部分区块，如该感光面的中心区块和/或周边区块。其中，该周边区块可均匀分布在该感光面的四周。
示例地，该方法中，可根据该第一预设区块的数据，确定该第一预设区块中被按压的区块个数，确定该手指是否按压。例如，若该被按压的区块个数大于或等于预设个数，则可确定该手指按压；反之，若该被按压的区块个数小于预设个数，则可确定该手指未按压。
若手指按压，则继续执行下述S1602。若手指未按压，则返回执行上述S1601。
S1602、若手指按压，则根据该感光面上的第二预设区块的数据进行指纹 识别；该第一预设区块的区块个数小于该第二预设区块的区块个数。
该第二预设区块例如可以为该感光面上的所有区块。当然，也可以为部分区块，只要该第二预设区块的个数大于该第一预设区级的个数即可。
如下以上述图1-图15中任一所示的液晶显示指纹模组为例进行说明。图17为本申请实施例提供的一种指纹识别方法的实现过程中的各部件的工作示意图。如图17所示，控制处理单元可通过调制电路对指纹光源2的电流信号进行调制，并由该驱动电路根据该调制后的电流信号对该指纹光源2进行驱动，使得指纹光源2发出该调制电路所采用的预设的调制频率的光信号。该指纹光源2发出的该预设的调制频率的光信号，经手指反射后，可依次通过盖板11、液晶面板12、导光板13的第一凸起部1312、导光板13的第二凸起部1313等入射至指纹传感器3的感应面。该指纹识别方法中，可采用该指纹传感器3的感应面上的第一预设区块的数据，并由该调制电路根据预设的调制频率对该第一预设区块的数据进行解调，并将该解调后的信号传输至控制处理单元，由该控制处理单元根据该第一预设区块的数据，确定手指是否按压。其中，该第一预设区块例如可以包括：图17所示的指纹传感器3的感应面上的中心区块34、周边区块31、周边区块32、周边区块33以及周边区块34。周边区块31、周边区块32、周边区块33以及周边区块34可位于指纹传感器3的感应面的四周。
在控制处理单元确定手指按压的情况下，该控制处理单元可通过解调电路，获取该指纹传感器3的感应面的第二预设区块如所有区块的数据，并根据该感光面上的第二预设区块的数据进行指纹识别。
本申请实施例提供的指纹识别方法中，可在根据该感应面上的第一预设区块的数据确定手指是否按压，在手指按压的情况下，根据该感应面上的第二预设区块的数据进行指纹识别，减少了数据处理量，提高了指纹识别速度。
可选的，本申请实施例还可提供一种指纹识别方法。图18为本申请实施例提供的一种指纹识别方法的流程图二。如图18所示，该方法在上述图16所示的方法中S1602中根据该感光面上的第二预设区块的数据进行指纹识别根据所述感光面上的第二预设区块的数据进行指纹识别之前，还可包括：
S1801、检测光线传感器是否被遮挡。
该方法中，可获取光线传感器检测的光强信息，并根据该光强信息确定该光线传感器是否被遮挡，例如，若该光强信息大于或等于预设值，则可确 定该光线传感器未被遮挡。反之，若该光强信息小于预设值，则可确定该光线传感器被遮挡。
若该光线传感器未被遮挡，则继续执行下述S1802。若该光线传感器被遮挡，则返回执行上述S1801。
则上述S1602中根据该感光面上的第二预设区块的数据进行指纹识别，可包括：
S1802、若该光线传感器未被遮挡，则根据该第二预设区块的数据进行指纹识别。
该实施例提供的方法，可在确定该光线传感器未被遮挡的情况下，根据该第二预设区块的数据进行指纹识别，有效避免例如电子设备在口袋中手指的误触，减少不必要的操作。
可选的，本申请实施例还可提供一种指纹识别方法。图19为本申请实施例提供的一种指纹识别方法的流程图三。如图19所示，该方法在上述图16或图18所示的方法的基础上，还可包括：
S1901、确定该第一预设区块中的区块按压顺序。
该方法中，可根据该第一预设区块中各区块的时间信息，确定该区块按压顺序。
S1902、根据该区块按压顺序，确定手指的滑动操作的方向。
假设，若该区块按压顺序为上述图17中所示的周边区块35、中心区块34及周边区块32，则可确定该手指的滑动操作的方向为从下至上的滑动方向。
若该区块按压顺序为上述图17中所示的周边区块32、中心区块34及周边区块35，则可确定该手指的滑动操作的方向为从上至下的滑动方向。
若该区块按压顺序为上述图17中所示的周边区块31、中心区块34及周边区块33，则可确定该手指的滑动操作的方向为从左至右的滑动方向。
若该区块按压顺序为上述图17中所示的周边区块33、中心区块34及周边区块31，则可确定该手指的滑动操作的方向为从右至左的滑动方向。
可选的，该方法还可包括：
S1903、若指纹识别通过，则根据该滑动操作的方向，执行该滑动操作的方向所对应的软件功能。
该滑动操作的方向所对应的软件功能例如可以为返回上级界面、返回主 菜单等任一软件功能。不同的滑动操作的方向，可对应不同的软件功能。
该方法中，可在指纹识别通过，则根据该滑动操作的方向，执行该滑动操作的方向所对应的软件功能，在实现指纹识别的基础上，实现软件功能的导航，提高了操作效率。
可选的，本申请实施例还可提供一种指纹识别方法。可选的，该方法在上述图16或图18所示的方法的基础上，还可包括：
根据该第一预设区块的数据，确定手指的按压力度；
根据该手指的按压力度，确定执行该按压力度对应的软件功能。
该方法中，可根据该第一预设区块的数据的大小，确定该手指的按压力度。例如，若第一预设区块的数据大于或等于预设值的情况下，确定该手指的按压力度为重按压。若该第一预设区块的数据小于预设值的情况下，确定该手指的按压力度为轻按压。
该按压力度对应的软件功能例如可以为返回上级界面、返回主菜单等任一软件功能。不同的按压力度，可对应不同的软件功能。
该方法中，可在指纹识别通过，则根据该手指的按压力度，执行该按压力度所对应的软件功能，在实现指纹识别的基础上，实现软件功能的导航，提高了操作效率。
图20为本申请实施例提供的另一种指纹识别方法的流程图一，该方法可由电子设备的处理器，或者指纹识别芯片的处理单元如控制处理单元，通过软件和/或硬件的方式实现。如图20所示，该指纹识别方法可包括如下：
S2001、根据感应二极管(Photo Diode)检测到的光强信息，确定该手指是否按压。
在一种示例中，若该光强信息大于或等于预设值，则可确定该手指未按压。反之，若该光强信息小于预设值，则可确定该手指按压。
在另一种示例中，可确定光强信息是否在预设范围内；若该光强信息在该预设范围内，则确定该手指按压；若该光强信息不在预设范围内，则确定该手指未按压。
若手指按压，则继续执行下述S2002。若手指未按压，则返回执行上述 S2001。
S2002、若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；该感应二极管与该指纹传感器位于同一感应器内。
如下以上述图1-图15中任一所示的液晶显示指纹模组为例进行说明。图21为本申请实施例提供的另一种指纹识别方法的实现过程中的各部件的工作示意图。如图21所示，控制处理单元可通过调制电路对指纹光源2的电流信号进行调制，并由该驱动电路根据该调制后的电流信号对该指纹光源2进行驱动，使得指纹光源2发出该调制电路所采用的预设的调制频率的光信号。该指纹光源2发出的该预设的调制频率的光信号，经手指反射后，可依次通过盖板11、液晶面板12、导光板13的第一凸起部1312、导光板13的第二凸起部1313等入射至指纹传感器3的感应面及感应二极管36
该感应二极管36可与指纹传感器3位于同一感应器或芯片上。
该方法中，可通过该控制处理单元获取该感应二极管获取的光强信息，并确定该光强信息是否在预设范围内，若该光强信息在该预设范围内，则确定该手指按压；若该光强信息不在预设范围内，则确定该手指未按压。
在控制处理单元确定手指按压的情况下，该控制处理单元可通过解调电路，获取该指纹传感器3的感应面如所有区块的数据，并根据该感光面上的所有区块的数据进行指纹识别。
本申请实施例提供的指纹识别方法中，可在根据感应二极管检测到的光强信息确定手指是否按压，在手指按压的情况下，根据该感应面上的数据进行指纹识别，减少了数据处理量，提高了指纹识别速度。
需指出的是，在感应二极管检测光强信息的过程中，该感应二极管可不采集心率数据，提高了识别速度，从而提高了指纹检测速度。
可选的，本申请实施例还可提供一种指纹识别方法可在上述图20所示的方法中S2002中根据指纹传感器的感光面上的数据进行指纹识别之前，还包括：
检测光线传感器是否被遮挡；若该光线传感器未被遮挡，则根据该指纹传感器的感光面上的数据进行指纹识别。
检测该光线传感器是否被遮挡的实现可参见上述S1801的描述，在此不再赘述。
该实施例提供的方法，可在确定该光线传感器未被遮挡的情况下，根据 该感应面的数据进行指纹识别，有效避免例如电子设备在口袋中手指的误判，减少不必要的操作。
可选的，本申请实施例还可提供一种指纹识别方法。图22为本申请实施例提供的另一种指纹识别方法的流程图二。如图22所示，该方法在上述S2002根据指纹传感器的感光面上的数据进行指纹识别之前，还可包括：
S2201、获取该感应二极管检测到的心率数据。
该方法中，可在确定手指按压的情况下，控制该感应二极管采集心率数据，并获取该感应二极管所检测到的心率数据。
S2202、根据该心率数据，确定该指纹传感器的感光面上的数据是否为活体指纹数据。
结合上述图21，该方法中，控制处理单元在获取到该心率数据后，还可通过放大和滤波电路对心率数据进行放大滤波，通过模数转换器将该心率数据转换为数字信号，继而根据该数字信号的心率数据，确定该指纹传感器的感光面上的数据是否为活体指纹数据。
则上述S2002根据指纹传感器的感光面上的数据进行指纹识别可包括：
S2203、若该指纹传感器的感光面上的数据为活体指纹数据，则根据该指纹传感器的感光面上的数据进行指纹识别。
可选的，该方法还可包括：
S2204、输出该心率数据。
该方法中，可在确定该指纹传感器的感光面上的数据为活体指纹数据的情况下，根据该指纹传感器的感光面上的数据进行指纹识别，提高了指纹识别的准确度。同时，输出该心率数据可用户获知当前心率数据。
下述为本申请装置实施例，可以用于执行本申请上述方法实施例，其实现原理和技术效果类似。
图23为本申请实施例提供的一种指纹识别装置的结构示意图。该指纹识别装置可应用于具有指纹识别的电子设备中，该电子设备包括：显示屏和指纹传感器；该指纹传感器位于该显示屏的下方。该指纹识别装置可通过软件和/或硬件的方式实现，可集成在该电子设备内部。如图23所示，该指纹识别装置2300包括：
确定模块2301，用于根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压。
识别模块2302，用于若手指按压，则根据该感光面上的第二预设区块的数据进行指纹识别；该第一预设区块的区块个数小于该第二预设区块的区块个数。
可选的，该第一预设区块包括：该感光面的中心区块和/或周边区块；该周边区块均匀分布在该感光面的四周。
可选的，该指纹识别装置2300还包括：
检测模块，用于检测光线传感器是否被遮挡。
识别模块2302，具体用于若该光线传感器未被遮挡，则根据该第二预设区块的数据进行指纹识别。
可选的，确定模块2301，还用于确定该第一预设区块中的区块按压顺序；根据该区块按压顺序，确定手指的滑动操作的方向。
可选的，该指纹识别装置2300还包括：
执行模块，用于若指纹识别通过，则根据该滑动操作的方向，执行该滑动操作的方向所对应的软件功能。
本实施例提供的指纹识别装置可执行上述图16至图19中任一所示的指纹识别方法，其具体实现及有效效果，可参见上述，在此不再赘述。
图24为本申请实施例提供的另一种指纹识别装置的结构示意图。该指纹识别装置可应用于具有指纹识别的电子设备中，该电子设备包括：显示屏和指纹传感器；该指纹传感器位于该显示屏的下方。该指纹识别装置可通过软件和/或硬件的方式实现，可集成在该电子设备内部。如图24所示，该指纹识别装置2400包括：
确定模块2401，用于根据感应二极管检测到的光强信息，确定该手指是否按压。
识别模块2402，具体用于若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；该感应二极管与该指纹传感器位于同一感应器内。
可选的，确定模块2401，具体用于确定该光强信息是否在预设范围内；若该光强信息在该预设范围内，则确定该手指按压；若该光强信息不在预设 范围内，则确定该手指未按压。
可选的，该指纹识别装置2400还包括：
检测模块，用于检测光线传感器是否被遮挡。
识别模块2402，具体用于若该光线传感器未被遮挡，则根据该指纹传感器的感光面上的数据进行指纹识别。
可选的，该指纹识别装置2400还包括：
获取模块，用于获取该感应二极管检测到的心率数据。
确定模块2401，还用于根据该心率数据，确定该指纹传感器的感光面上的数据是否为活体指纹数据。
识别模块2402，具体用于若该指纹传感器的感光面上的数据为活体指纹数据，则根据该指纹传感器的感光面上的数据进行指纹识别。
可选的，该指纹识别装置2400还包括：
输出模块，用于输出该心率数据。
本实施例提供的指纹识别装置可执行上述图20至图22中任一所示的指纹识别方法，其具体实现及有效效果，可参见上述，在此不再赘述。
图25为本申请实施例提供的一种电子设备的结构示意图二。如图7所示，本实施例的电子设备25包括：存储器2501和处理器2502。存储器2501通过总线与处理器2502连接。
存储器2501，用于存储程序指令。
处理器2502，用于调用存储器2501存储的该程序指令时，执行上述图16-图22中任一所述的指纹识别方法。
本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序可被上述图25所述的处理器2502执行实现上任一实施例上述图16-图22中任一所述的指纹识别方法，其具体实现及有效效果，可参见上述，在此不再赘述。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (40)

  1. 一种液晶显示指纹模组，其特征在于，包括：显示模组、指纹光源及指纹传感器；其中，所述显示模组包括液晶面板和背光模组；
    所述液晶面板位于所述背光模组上方；所述背光模组包括：第一膜材、导光板、第二膜材和背光源；所述导光板包括导光本体、第一凸起部及第二凸起部；所述第一膜材位于所述导光本体朝向所述液晶面板的一侧，所述第二膜材位于所述导光本体位于背离所述液晶面板的一侧；所述导光本体的侧端设置有所述背光源；
    所述第一膜材在所述指纹传感器的视场范围内，具有通孔，用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面；所述第二膜材在所述指纹传感器的视场范围内，具有通孔，用以使得所述第二凸起部背离所述液晶面板的一端朝向所述指纹传感器的感光面；所述指纹光源发出的光线经反射后通过所述导光板入射至所述指纹传感器的感光面。
  2. 根据权利要求1所述的液晶显示指纹模组，其特征在于，所述第一膜材包括：复合膜；所述复合膜位于所述导光本体朝向所述液晶面板的一侧；所述复合膜在所述指纹传感器的视场范围内，具有通孔，用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面。
  3. 根据权利要求2所述的液晶显示指纹模组，其特征在于，所述第一膜材还包括：增光膜；所述增光膜位于所述复合膜与所述导光本体之间；
    所述增光膜在所述指纹传感器的视场范围内，具有通孔，用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面。
  4. 根据权利要求3所述的液晶显示指纹模组，其特征在于，所述第一膜材还包括：扩散膜；所述扩散膜位于所述增光膜与所述导光本体之间；
    所述扩散膜在所述指纹传感器的视场范围内，具有通孔，用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面。
  5. 根据权利要求1所述的液晶显示指纹模组，其特征在于，所述第二膜材还包括：第一反射膜；所述第一反射膜位于所述导光本体背离所述液晶面板的一侧；
    所述第一反射膜在所述指纹传感器的视场范围内，具有通孔，用以使得所述第二凸起部背离所述液晶面板的一端朝向所述指纹传感器的感光面。
  6. 根据权利要求5所述的液晶显示指纹模组，其特征在于，所述第二膜材还包括：支撑板；所述支撑板位于所述第一反射膜背离所述液晶面板的一侧；
    所述支撑板在所述指纹传感器的视场范围内，具有通孔，用以使得所述第二凸起部背离所述液晶面板的一端朝向所述指纹传感器的感光面。
  7. 根据权利要求1-6中任一项所述的液晶显示指纹模组，其特征在于，所述液晶显示指纹模组还包括：补光组件；所述补光组件包括：补光光源；所述补光光源位于所述第二凸起部的侧面。
  8. 根据权利要求7所述的液晶显示指纹模组，其特征在于，所述补光组件还包括：第二反射膜；所述第二反射膜位于所述第二凸起部朝向所述指纹传感器的感光面的一侧。
  9. 根据权利要求8所述的液晶显示指纹模组，其特征在于，所述补光组件还包括：滤光片；所述滤光片位于所述第二反射膜与所述指纹传感器的感光面之间。
  10. 根据权利要求7所述的液晶显示指纹模组，其特征在于，所述补光光源和所述背光源为同一种白光的发光二极管LED。
  11. 根据权利要求1-6中任一项所述的液晶显示指纹模组，其特征在于，还包括盖板，所述指纹光源位于所述盖板朝向所述液晶面板一侧的空缺位置。
  12. 根据权利要求11所述的液晶显示指纹模组，其特征在于，所述指纹光源通过平贴方式与所述盖板上所述空缺位置处的下表面贴合，使得所述指纹光源的出光面与所述盖板的下表面平行。
  13. 根据权利要求11所述的液晶显示指纹模组，其特征在于，所述指纹光源通过斜贴方式与所述盖板上所述空缺位置处的下表面贴合，使得所述指纹光源的出光面与所述盖板的下表面存在预设的夹角。
  14. 根据权利要求1-6中任一项所述的液晶显示指纹模组，其特征在于，所述指纹光源位于所述导光本体的侧端。
  15. 根据权利要求1-6中任一项所述的液晶显示指纹模组，其特征在于，所述指纹光源为红外光源。
  16. 一种电子设备，其特征在于，包括：上述权利要求1-15中任一项所述的液晶显示指纹模组。
  17. 一种指纹识别方法，其特征在于，包括：
    根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压；
    若手指按压，则根据所述感光面上的第二预设区块的数据进行指纹识别；所述第一预设区块的区块个数小于所述第二预设区块的区块个数。
  18. 根据权利要求17所述的方法，其特征在于，所述第一预设区块包括：所述感光面的中心区块和/或周边区块；所述周边区块均匀分布在所述感光面的四周。
  19. 根据权利要求17所述的方法，其特征在于，所述根据所述感光面上的第二预设区块的数据进行指纹识别之前，所述方法还包括：
    检测光线传感器是否被遮挡；
    所述根据所述感光面上的第二预设区块的数据进行指纹识别，包括：
    若所述光线传感器未被遮挡，则根据所述第二预设区块的数据进行指纹识别。
  20. 根据权利要求17所述的方法，其特征在于，所述方法还包括：
    确定所述第一预设区块中的区块按压顺序；
    根据所述区块按压顺序，确定手指的滑动操作的方向。
  21. 根据权利要求20所述的方法，其特征在于，所述方法还包括：
    若指纹识别通过，则根据所述滑动操作的方向，执行所述滑动操作的方向所对应的软件功能。
  22. 一种指纹识别方法，其特征在于，包括：
    根据感应二极管检测到的光强信息，确定所述手指是否按压；
    若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；所述感应二极管与所述指纹传感器位于同一感应器内。
  23. 根据权利要求22所述的方法，其特征在于，所述根据所述光强信息，确定所述手指是否按压，包括：
    确定所述光强信息是否在预设范围内；
    若所述光强信息在所述预设范围内，则确定所述手指按压；
    若所述光强信息不在预设范围内，则确定所述手指未按压。
  24. 根据权利要求22所述的方法，其特征在于，所述根据指纹传感器的感光面上的数据进行指纹识别之前，所述方法还包括：
    检测光线传感器是否被遮挡；
    所述根据指纹传感器的感光面上的数据进行指纹识别，包括：
    若所述光线传感器未被遮挡，则根据所述指纹传感器的感光面上的数据进行指纹识别。
  25. 根据权利要求22-24中任一项所述的方法，其特征在于，所述根据指纹传感器的感光面上的数据进行指纹识别之前，所述方法还包括：
    获取所述感应二极管检测到的心率数据；
    根据所述心率数据，确定所述指纹传感器的感光面上的数据是否为活体指纹数据；
    所述根据指纹传感器的感光面上的数据进行指纹识别，包括：
    若所述指纹传感器的感光面上的数据为活体指纹数据，则根据所述指纹传感器的感光面上的数据进行指纹识别。
  26. 根据权利要求25所述的方法，其特征在于，所述方法还包括：
    输出所述心率数据。
  27. 一种指纹识别装置，其特征在于，包括：
    确定模块，用于根据指纹传感器的感光面上第一预设区块的数据，确定手指是否按压；
    识别模块，用于若手指按压，则根据所述感光面上的第二预设区块的数据进行指纹识别；所述第一预设区块的区块个数小于所述第二预设区块的区块个数。
  28. 一种指纹识别装置，其特征在于，包括：
    确定模块，用于根据感应二极管检测到的光强信息，确定所述手指是否按压；
    检测模块，用于若手指按压，则根据指纹传感器的感光面上的数据进行指纹识别；所述感应二极管与所述指纹传感器位于同一感应器内。
  29. 一种电子设备，其特征在于，包括：存储器和处理器；所述存储器和所述处理器连接；
    所述存储器用于存储程序指令；
    所述处理器，用于执行所述存储器存储的所述程序指令时执行上述权利要求17-26中任一项所述的指纹识别方法。
  30. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述权利要求17-26中任一项所述的指纹识别方法。
  31. 一种屏下指纹识别系统，适用于具有背光模组的液晶显示模组下方以进行屏下光学指纹检测，其特征在于，所述屏下指纹识别系统包括指纹光源和指纹传感器；
    所述指纹光源用于提供指纹检测的光线，所述指纹传感器用于检测按压在所述液晶显示模组上方的手指的指纹图像，且所述指纹传感器的视场范围位于所述液晶显示模组的显示区域；
    其中，所述液晶显示模组包括液晶面板和设置在所述液晶面板背面的背光模组，所述背光模组包括具有第一凸起部和第二凸起部的导光板，所述第一凸起部设置在所述指纹传感器的视场范围之内，所述第二凸起部朝向所述指纹传感器的感光面；
    所述指纹光源发出的光线在手指形成在返回光通过所述导光板的第一凸起部和第二凸起部入射至所述指纹传感器的感光面。
  32. 根据权利要求31所述的屏下指纹识别系统，其特征在于，所述背光模组还包括第一膜材和第二膜材，所述第一膜材位于所述导光板朝向所述液晶面板的一侧，所述第二膜材位于所述导光板位于背离所述液晶面板的一侧，其中，所述第一膜材和所述第二膜材在所述指纹传感器的视场范围内分别具有第一通孔和第二通孔，所述第一通孔用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面；所述第二通孔用以使得所述第二凸起部背离所述液晶面板的一端延伸至所述指纹传感器的感光面。
  33. 根据权利要求32所述的屏下指纹识别系统，其特征在于，所述背光模组还包括背光源，且所述导光板还包括导光本体，所述第一凸起部和所述第二凸起部从所述导光本体两侧延伸而成，所述背光源设置在所述导光本体的侧端。
  34. 根据权利要求32所述的屏下指纹识别系统，其特征在于，所述第一膜材包括复合膜、增光膜和扩散膜中的至少一个，其设置在所述导光板和所述液晶面板之间，并且在所述指纹传感器的视场范围内分别具有通孔，用以使得所述第一凸起部延伸至所述第一膜材靠近所述液晶面板的一面。
  35. 根据权利要求32所述的屏下指纹识别系统，其特征在于，所述第二膜材包括第一反射膜；所述第一反射膜位于所述导光板背离所述液晶面板的一侧，且其在所述指纹传感器的视场范围内具有通孔，用以使得所述第二凸起部背离所述液晶面板的一端延伸至所述指纹传感器的感光面。
  36. 根据权利要求31-35中任一项所述的屏下指纹识别系统，其特征在于，所述屏下指纹识别系统还包括补光组件；所述补光组件包括补光光源；所述补光光源位于所述第二凸起部的侧面。
  37. 根据权利要求36所述的屏下指纹识别系统，其特征在于，所述补光组件还包括第二反射膜；所述第二反射膜位于所述第二凸起部朝向所述指纹传感器的感光面的一侧。
  38. 根据权利要求36所述的屏下指纹识别系统，其特征在于，所述补光组件还包括滤光片；所述滤光片位于所述第二反射膜与所述指纹传感器的感光面之间。
  39. 根据权利要求31-35中任一项所述的屏下指纹识别系统，其特征在于，所述液晶显示模组还包括盖板，所述指纹光源位于所述盖板朝向所述液晶面板一侧的空缺位置；其中，所述指纹光源通过平贴方式与所述盖板上所述空缺位置处的下表面贴合，使得所述指纹光源的出光面与所述盖板的下表面平行；或者，所述指纹光源通过斜贴方式与所述盖板上所述空缺位置处的下表面贴合，使得所述指纹光源的出光面与所述盖板的下表面存在预设的夹角。
  40. 根据权利要求33所述的屏下指纹识别系统，其特征在于，所述指纹光源设置在所述导光本体的侧端，且所述指纹光源为红外光源。
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