WO2019024561A1 - 显示屏、电子设备及指纹识别方法 - Google Patents

显示屏、电子设备及指纹识别方法 Download PDF

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Publication number
WO2019024561A1
WO2019024561A1 PCT/CN2018/086330 CN2018086330W WO2019024561A1 WO 2019024561 A1 WO2019024561 A1 WO 2019024561A1 CN 2018086330 W CN2018086330 W CN 2018086330W WO 2019024561 A1 WO2019024561 A1 WO 2019024561A1
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Prior art keywords
control
electrical signal
photosensitive sensor
signal
finger
Prior art date
Application number
PCT/CN2018/086330
Other languages
English (en)
French (fr)
Inventor
张君勇
朱家庆
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华为技术有限公司
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Publication of WO2019024561A1 publication Critical patent/WO2019024561A1/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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix

Definitions

  • the present application relates to the field of electronic device technologies, and in particular, to a display screen, an electronic device, and a fingerprint identification method.
  • fingerprint recognition technology has become an important part of people's life as an important function of electronic devices.
  • the chin area will occupy a certain area, it affects the proportion of the display screen, so that the screen ratio of the mobile phone is not high.
  • the present application provides a display screen, an electronic device, and a fingerprint identification method, which improve the screen ratio of an electronic device while implementing fingerprint recognition.
  • the present application provides a display screen applied to an electronic device, and the display screen may include:
  • the photosensitive sensor is laid on the surface of the AMOLED panel, and is disposed between the AMOLED panel and the polarizer;
  • the photosensitive sensor is configured to convert an optical signal reflected by a user's finger into an electrical signal when the user's finger touches the cover glass;
  • the photosensitive sensor is also used to send an electrical signal to the control IC;
  • the control IC is used to convert the electrical signal into a fingerprint signal and perform fingerprint recognition based on the fingerprint signal.
  • the display screen provided by the present application by laying the photosensitive sensor on the surface of the AMOLED panel, causes the light reflected by the user's finger directly through the photosensitive sensor laid on the surface of the AMOLED panel in the process of determining whether there is a fingerprint touch or fingerprint recognition.
  • the signal is converted into an electrical signal, and the converted electrical signal is sent to the control IC, so that the control IC can determine whether there is a finger touch and fingerprint recognition according to the electrical signal, thereby realizing the fingerprint recognition and increasing the screen occupation of the electronic device. ratio.
  • the photosensitive sensor is evenly laid on the surface of the AMOLED panel.
  • the distance between the two photosensitive sensors is 0.02 mm or more and any value less than or equal to 0.2 mm.
  • the AMOLED panel includes M pixels in the horizontal direction, the AMOLED panel includes N pixels in the vertical direction, and each adjacent K pixels in the AMOLED panel is correspondingly disposed with one photosensitive sensor; wherein, M is greater than or equal to 720.
  • M is greater than or equal to 720.
  • An integer is an integer greater than or equal to 1080, and K is an integer greater than or equal to 1, and less than or equal to 10.
  • an infrared photosensitive element is further included, wherein
  • the infrared photosensitive element is disposed on the surface of the AMOLED panel, so that when the screen is off, the built-in light source of the AMOLED panel does not need to be activated, and the infrared photosensitive element can be used to fill light to collect the light signal reflected by the user's finger, and the optical signal is collected.
  • the first electrical signal is converted such that the control IC 202 can determine the finger touch area based on the first electrical signal.
  • the application provides an electronic device, which may include:
  • a memory, a processor, and a display screen as shown in any of the possible implementations of the above first aspect.
  • the present application provides a fingerprint identification method, which is applied to an electronic device.
  • the display screen of the electronic device includes: a photosensitive sensor, a control integrated circuit IC, and an active matrix organic light emitting diode display AMOLED panel to cover glass sequentially The AMOLED panel, the polarizer and the cover glass; the control IC is connected to the photosensitive sensor; wherein the photosensitive sensor is disposed on the surface of the AMOLED panel and disposed between the AMOLED panel and the polarizer;
  • the fingerprint identification method may include:
  • control IC When the user's finger touches the cover glass, the control IC receives the first electrical signal, and the first electrical signal is converted by the photosensitive sensor according to the optical signal reflected by the user's finger;
  • the control IC determines the finger touch area according to the first electrical signal
  • the control IC When the control IC receives the fingerprint recognition instruction, the control IC converts the second electrical signal into a fingerprint signal, and performs fingerprint recognition according to the fingerprint signal, and the second electrical signal is converted by the light sensor in the finger touch area according to the light signal reflected by the user finger. owned.
  • the fingerprint identification method when the user's finger touches the cover glass, the control IC receives the first electrical signal converted by the light sensor according to the light signal reflected by the user's finger, and determines the finger touch area according to the first electrical signal; After receiving the fingerprint recognition instruction, the second electrical signal converted by the photosensitive sensor in the touch area of the finger is converted into a fingerprint signal, and fingerprint recognition is performed according to the fingerprint signal, thereby realizing the identification of the electronic device while the fingerprint is being recognized. Screen ratio.
  • control IC determines the finger touch area according to the first electrical signal, and may include:
  • the control IC determines the primary touch area according to the first electrical signal; the control IC determines a center point of the primary touch area; and the control IC determines the finger touch area according to the center point and the preset fingerprint size.
  • control IC determines the primary touch area according to the first electrical signal, and may include:
  • the control IC detects a signal value of the first electrical signal
  • the control IC determines that the area where the photosensitive sensor corresponding to the first electrical signal is located is the primary touch area.
  • control IC determines the finger touch area according to the first electrical signal, and may include:
  • the control IC detects the signal value of the first electrical signal; the control IC determines that the position of the photosensitive sensor with the largest signal value of the first electrical signal is the center point of the primary touch area; the control IC determines the finger touch area according to the center point and the preset fingerprint size .
  • the display screen, the electronic device and the fingerprint identification method provided by the application comprises: a photosensitive sensor, a control integrated circuit IC, an active matrix organic light emitting diode display AMOLED panel, a polarizer and a cover glass, and the polarizer is disposed at Between the AMOLED panel and the cover glass, the control IC is connected to the photosensitive sensor; wherein the photosensitive sensor is placed on the surface of the AMOLED panel and disposed between the AMOLED panel and the polarizer; the photosensitive sensor is used when the user's finger touches the cover glass The light signal reflected by the user's finger is converted into an electrical signal; the light sensor is also used to send the electrical signal to the control IC; the control IC is used to convert the electrical signal into a fingerprint signal, and perform fingerprint recognition according to the fingerprint signal.
  • the display screen provided by the present application lays the photosensitive sensor on the surface of the AMOLED panel, so that in the process of judging whether there is fingerprint touch and fingerprint recognition, the user directly passes the photosensitive sensor laid on the surface of the AMOLED panel.
  • the light signal reflected by the finger is converted into an electrical signal, and the converted electrical signal is sent to the control IC, so that the control IC can determine whether there is a finger touch and fingerprint recognition according to the electrical signal, so as to improve the electronic while fingerprint recognition
  • the screen ratio of the device is compared to improve the electronic while fingerprint recognition
  • FIG. 1 is a schematic structural view of a display screen provided by the prior art
  • FIG. 2 is a schematic structural diagram of a display screen according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a manner of laying a photosensitive sensor according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another manner of laying a photosensitive sensor according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of distribution of a first type of photosensitive sensor according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of distribution of another type of photosensitive sensor according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of determining a finger touch area according to a first electrical signal according to an embodiment of the present disclosure
  • FIG. 8 is another schematic diagram of determining a finger touch area according to a first electrical signal according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart diagram of a fingerprint identification method according to an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a display screen provided by the prior art.
  • the existing mobile phone display screen includes an active matrix organic light emitting diode display arranged in order from the inside to the outside (Active Matrix Organic).
  • the display includes a photosensitive sensor, a control integrated circuit (IC), an AMOLED panel, a polarizer and a cover glass.
  • the polarizer is disposed between the AMOLED panel and the cover glass, and the photosensitive sensor is disposed on the AMOLED.
  • the surface of the screen is placed between the AMOLED screen and the polarizer.
  • the capacitive touch panel is not disposed in the display screen of the present application, but the photosensitive sensor is directly laid on the surface of the AMOLED panel, when determining whether there is a finger touch and fingerprint recognition,
  • the light sensor reflects the light signal reflected by the finger when the user touches the cover glass, and converts the light signal into an electrical signal, so that the control IC can determine whether there is a finger touch according to the electrical signal, and when receiving the fingerprint recognition instruction
  • the electrical signal can be converted into fingerprint information, thereby realizing the fingerprint recognition and increasing the screen ratio of the electronic device.
  • FIG. 2 is a schematic structural diagram of a display screen 20 according to an embodiment of the present disclosure, which is applied to an electronic device, and the electronic device may be a mobile phone or a tablet computer.
  • the display screen 20 can include:
  • the photosensitive sensor 201, the control integrated circuit IC 202, the AMOLED panel 203, the polarizer 204, and the cover glass 205 are disposed between the AMOLED panel 203 and the cover glass 205, and the control IC 202 is connected to the photosensitive sensor 201.
  • the photosensitive sensor 201 is laid on the surface of the AMOLED panel 203 and disposed between the AMOLED panel 203 and the polarizer 204.
  • the photosensitive sensor 201 is configured to convert an optical signal reflected by a user's finger into an electrical signal when the user's finger touches the cover glass 205; the photosensitive sensor 201 is further configured to transmit an electrical signal to the control IC 202.
  • the control IC 202 is configured to convert an electrical signal into a fingerprint signal and perform fingerprint recognition based on the fingerprint signal.
  • the display screen provided by the present application by laying the photosensitive sensor on the surface of the AMOLED panel, causes the light reflected by the user's finger directly through the photosensitive sensor laid on the surface of the AMOLED panel in the process of determining whether there is a fingerprint touch or fingerprint recognition.
  • the signal is converted into an electrical signal, and the converted electrical signal is sent to the control IC, so that the control IC can determine whether there is a finger touch and fingerprint recognition according to the electrical signal, thereby realizing the fingerprint recognition and increasing the screen occupation of the electronic device. ratio.
  • the AMOLED panel 203 includes a Thin Film Transistor (TFT) and an organic light emitting layer.
  • the organic light emitting layer is provided with three sub-pixels of red, yellow and blue, and the three sub-pixels are combined in a specific form to emit different Color light; TFT can precisely control each pixel to form a color image by matrix arrangement.
  • Each of the pixels includes at least three sub-pixels of red (Red, abbreviated as R), green (Green, abbreviated as G), and blue (Blue, abbreviated as B).
  • a commonly used pixel format is the Bayer format, which is composed of four sub-pixels of RGBG.
  • the working principle is: under the illumination of a specific wavelength of light, the carriers generated by the illumination participate in the conduction, when the user touches the cover In the case of glass 205, the light reflected by the finger reaches the photoresistor or the light pipe.
  • the photon energy is greater than the forbidden band width of the semiconductor material, the electrons in the valence band absorb the energy of one photon and then transition to the conduction band and generate a valence band. Positively charged holes, electrons rush to the positive pole of the power supply, and holes rush to the negative pole of the power supply.
  • the photosensitive sensor 201 can utilize the principle of refraction and reflection of light, and the light emitted by the finger under the illumination of the built-in light source of the display screen 20 Reflected by the surface of the finger back into the screen, the reflected light passes through the polarizer 204 to the photosensitive sensor 201, and the photosensitive sensor 201 can convert its own optical signal into an electrical signal, and send the converted electrical signal to the control IC 202 for control.
  • the IC 202 can calculate coordinate information of the finger touch according to the electrical signal, so that the finger touch area can be determined; after determining the finger touch area, the control IC 202 can convert the photosensitive sensor 201 in the finger touch area into fingerprint information, during the conversion process, Since the ridge line of the fingerprint is in contact with the surface of the cover glass 205, the valley line is not in contact with the surface of the cover glass 205, and therefore, the intensity of the corresponding generated electrical signal is different, thereby converting the electrical signal transmitted by the photosensitive sensor 201 into a fingerprint signal due to The density of the photosensitive sensor 201 is sufficiently large, and the control IC 202 can transmit each fingerprint letter. The number is combined into a fingerprint image for fingerprint recognition. It should be noted that the control IC 202 in the present application can also control the display screen 20 to display, such as displaying a picture or displaying a message.
  • the photosensitive sensor 201 can be laid on the surface of the AMOLED panel 203 in two possible ways, as follows:
  • FIG. 3 is a schematic diagram of a method for laying a photosensitive sensor according to an embodiment of the present application.
  • the photosensitive sensor 201 is uniformly laid on the surface of the AMOLED panel 203, and may be unevenly laid on the surface of the AMOLED panel 203 as long as it is ensured that the photosensitive sensor 201 can cover each of the surfaces of the AMOLED panel 203.
  • the distance between the two photosensitive sensors 201 is 0.02 mm or more and less than or equal to 0.2 mm.
  • the two photosensitive sensors 201 may be A 0.05 mm interval is evenly laid on the surface of the AMOLED panel 203.
  • FIG. 4 is a schematic diagram of another manner of laying a photosensitive sensor according to an embodiment of the present application.
  • the AMOLED panel 203 includes M pixels in the horizontal direction, and the AMOLED panel 203 includes N pixels in the vertical direction.
  • Each of the adjacent K pixels in the AMOLED panel 203 is correspondingly provided with a photosensitive sensor 201; wherein, M is 720 or more.
  • An integer, N is an integer greater than or equal to 1080, and K is an integer greater than or equal to 1, and less than or equal to 10.
  • each pixel can be regarded as a small square on the AMOLED panel 203, and each small square (ie, pixel) can be correspondingly disposed with one photosensitive sensor 201.
  • each small square ie, pixel
  • the normal display of the pattern is not affected.
  • the photo sensor 201 After the photo sensor 201 is completed, when the user's finger touches the cover glass 205 outside the AMOLED panel 203, if the screen of the mobile phone is in a bright state, the built-in light source of the AMOLED panel 203 will emit light, and the photosensitive sensor 201 The light signal reflected by the finger can be directly converted into the first electrical signal; when the screen of the mobile phone is in the off state, the light source of the AMOLED panel 203 does not emit light, and the photosensitive sensor 201 cannot collect the light signal reflected by the user's finger. The optical signal cannot be converted into the first electrical signal.
  • the control IC 202 can control the built-in light source of the AMOLED panel 203 to be activated, so that the screen of the mobile phone changes from the off-screen state to the bright-screen state, thereby collecting the optical signal reflected by the user's finger. And converting the optical signal into a first electrical signal.
  • an infrared photosensitive element can be disposed on the AMOLED panel 203, so that when the screen is off, there is no need to activate the built-in light source of the AMOLED panel 203, and the infrared light sensor can be used to fill the light.
  • the infrared photosensitive element and the photosensitive sensor 201 in the present application are both disposed on the surface of the AMOLED panel 203, and the arrangement thereof is similar to that of the photosensitive sensor 201, that is, the infrared photosensitive element can be uniformly laid on the AMOLED panel 203.
  • an infrared photosensitive element may be disposed correspondingly for each adjacent K pixels in the AMOLED panel 203, and details are not described herein.
  • the control IC 202 may control all the photosensitive sensors 201 laid on the surface of the AMOLED panel 203 to collect the light signals reflected by the user's fingers, and receive the first electrical signals sent by all the photosensitive sensors to convert the optical signals.
  • a part of the sensor laid on the surface of the AMOLED panel 203 can also be controlled, that is, the first type of photosensitive sensor 2011 collects the light signal reflected by the user's finger, and receives the light transmitted by the first type of photosensitive sensor 2011.
  • the first electrical signal obtained by the signal conversion.
  • FIG. 5 which is a schematic diagram of a distribution of a first type of photosensitive sensor 2011 according to an embodiment of the present application.
  • the first type of photosensitive sensor 2011 may be a specific row of photosensitive sensors in the AMOLED panel 203, such as odd lines in the first row, the third row, the fifth row, and the seventh row; or the second row and the fourth row
  • FIG. 6 is a schematic diagram showing the distribution of another type 1 photosensitive sensor 2011 according to an embodiment of the present invention; of course, the first row and the fifth row are also available.
  • the ninth line is equally spaced.
  • the control IC 202 can determine the finger touch area according to the first electrical signal sent by the first type of converter 2011.
  • control IC 202 determines the finger touch area based on the first electrical signal transmitted by the first type of converter 2011?
  • the control IC 202 determines, according to the first electrical signal, that the finger touch area can be implemented in the following two possible manners, as follows:
  • control IC 202 may determine the primary touch area according to the first electrical signal; and determine a center point of the primary touch area; and then determine the finger touch area according to the center point and the preset fingerprint size.
  • the preset fingerprint size can usually be set according to the size of the user's fingertip.
  • the target collection area may be a circular area centered on the center point, and the diameter of the circular area may be any value greater than or equal to 5 mm and less than or equal to 10 mm.
  • FIG. 7 is a schematic diagram of determining a finger touch area according to a first electrical signal according to an embodiment of the present application.
  • the established fingerprint model is similar to one.
  • a spherical model according to which the center of the sphere can be determined which is the center point A of the primary touch area M, due to The size of the user's fingertip is limited. Therefore, after determining the center point A of the primary touch area M, a circular area having a diameter of 5 mm can be determined according to the center point A and the preset fingerprint size, and the circular area is The finger touches the area MD.
  • control IC 202 can detect a signal value of a first electrical signal of each of the first type of photosensitive sensors 2011; and determine a position of the photosensitive sensor with the largest signal value as a primary touch area. The center point; then the finger touch area is determined according to the center point and the preset fingerprint size.
  • FIG. 8 is another schematic diagram of determining a finger touch area according to a first electrical signal according to an embodiment of the present application.
  • the control IC 202 determines that the first type of photosensitive sensor 2011 is activated, when the user's finger touches the surface of the cover glass 205, the first type of photosensitive sensor 2011 collects the optical signal reflected by the user's finger, and converts the optical signal into the first signal.
  • the electrical signal is then sent to the control IC 202, and the control IC 202 can determine the position of the photosensitive sensor with the largest signal value as the center point A of the primary acquisition area M.
  • the size of the user's fingertip is limited. Therefore, after determining the center point A of the primary touch area M, a circular area having a diameter of 5 mm can be determined according to the center point A and the preset fingerprint size, which is the finger touch area.
  • the display screen collects the light signal reflected by the user's finger through a part of the sensor (ie, the first type of photosensitive sensor 2011) laid on the surface of the AMOLED panel 203 when determining whether there is a finger touch, and
  • the optical signal converts the obtained first electrical signal, so that the control IC 202 can determine the primary touch area according to the first electrical signal; and determines that part of the sensor (ie, the finger touch area) that is laid on the surface of the AMOLED panel 203 is also controlled when fingerprinting is performed.
  • the second type of photosensitive sensor 2012 is activated, and receives the second optical signal converted by the second type of photosensitive sensor 2012 according to the optical signal reflected by the user's finger, and then converts the second electrical signal into a fingerprint signal, thereby realizing the fingerprint identification.
  • the photosensitive sensor in the other non-finger touch area since only the second type of photosensitive sensor in the finger touch area collects the light signal reflected by the user's finger, the photosensitive sensor in the other non-finger touch area does not need to collect the light signal reflected by the user's finger, thereby reducing the light signal. The amount of data collected by the mobile phone.
  • the display screen 20 provided by the embodiment of the present application includes the photosensitive sensor 201, the control IC 202, and the AMOLED panel 203 to the cover glass 205, and the AMOLED panel 203, the polarizer 204, and the cover glass 205 are sequentially disposed; the control IC 202 and the photosensitive device
  • the sensor 201 is connected; wherein the photosensitive sensor 201 is laid on the surface of the AMOLED panel 203 and disposed between the AMOLED panel 203 and the polarizer 204; the photosensitive sensor 201 is used to reflect the user's finger when the user's finger touches the cover glass 205.
  • the optical signal is converted into an electrical signal; the photosensitive sensor 201 is also used to transmit an electrical signal to the control IC 202; the control IC 202 is configured to convert the electrical signal into a fingerprint signal and perform fingerprint recognition based on the fingerprint signal.
  • the display screen 20 provided by the embodiment of the present application determines whether there is a finger touch
  • the optical signal reflected by the user's finger is collected by a part of the sensor (ie, the first type of photosensitive sensor 2011) laid on the surface of the AMOLED panel 203, and Converting the optical signal to the first electrical signal, so that the control IC 202 can determine the primary touch area according to the first electrical signal; and determining that part of the sensor (ie, the finger touch area) is placed on the surface of the AMOLED panel 203 when fingerprinting is performed.
  • the second type of photosensitive sensor 2012 is activated, and receives the second optical signal converted by the second type of photosensitive sensor 2012 according to the optical signal reflected by the user's finger, and then converts the second electrical signal into a fingerprint signal, thereby realizing fingerprint recognition.
  • the photosensitive sensor in the other non-finger touch area since only the second type of photosensitive sensor 2012 in the finger touch area collects the light signal reflected by the user's finger, the photosensitive sensor in the other non-finger touch area does not need to collect the light signal reflected by the user's finger, thereby reducing The amount of data collected by the mobile phone.
  • the size of the AMOLED panel is 6 feet, and the ratio of length to width is 18:9, that is, 68.16 mm * 136.32 mm, in the entire AMOLED panel area.
  • the photosensitive sensor in the other non-finger touch area since only the second type of photosensitive sensor in the finger touch area collects the light signal reflected by the user's finger, the photosensitive sensor in the other non-finger touch area does not need to collect the light signal reflected by the user's finger, thereby reducing the light signal. The amount of data collected by the mobile phone.
  • FIG. 9 is a schematic structural diagram of an electronic device 90 according to an embodiment of the present disclosure.
  • the electronic device 90 may include:
  • the memory 901, the processor 902, and the display screen 20 shown in the above embodiment are the same.
  • the electronic device 90 shown in the embodiment of the present application can perform the technical solution shown in the foregoing embodiment of the display screen 20.
  • the implementation principle and the beneficial effects are similar, and details are not described herein.
  • the display screen of the electronic device includes: a photosensitive sensor, a control integrated circuit IC, and an active matrix organic light emitting diode display AMOLED panel to The cover glass is sequentially provided with an AMOLED panel, a polarizer and a cover glass; the control IC is connected with the photosensitive sensor; wherein the photosensitive sensor is placed on the surface of the AMOLED panel and disposed between the AMOLED panel and the polarizer, as shown in FIG.
  • the fingerprint identification method includes:
  • the control IC receives the first electrical signal when the user's finger touches the cover glass.
  • the first electrical signal is obtained by converting the photosensitive sensor according to the optical signal reflected by the user's finger.
  • the control IC determines a finger touch area according to the first electrical signal.
  • control IC When the control IC receives the fingerprint identification instruction, the control IC converts the second electrical signal into a fingerprint signal, and performs fingerprint identification according to the fingerprint signal.
  • the second electrical signal is obtained by converting the photosensitive sensor in the touch area of the finger according to the optical signal reflected by the user's finger.
  • the S1002 control IC determines the finger touch area according to the first electrical signal, and may be implemented in the following two possible manners:
  • control IC determines the primary touch area according to the first electrical signal; then determines the center point of the primary touch area; and determines the finger touch area according to the center point and the preset fingerprint size.
  • the control IC determines the primary touch area according to the first electrical signal, and may include:
  • the control IC detects the signal value of the first electrical signal; if the signal value of the first electrical signal is greater than or equal to the reference signal value, determining that the area of the photosensitive sensor corresponding to the first electrical signal is the primary touch area.
  • control IC detects the signal value of the first electrical signal; and determines that the position of the photosensitive sensor with the largest signal value of the first electrical signal is the center point of the primary touch region;
  • the preset fingerprint size determines the finger touch area.
  • the fingerprint identification method shown in the embodiment of the present application can be implemented by the technical solution shown in the foregoing display screen embodiment, and the implementation principle and the beneficial effects are similar, and details are not described herein.

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Abstract

本申请提供一种显示屏、电子设备及指纹识别方法，包括：感光传感器、控制集成电路IC、有源矩阵有机发光二级体显示AMOLED面板、偏光片及盖板玻璃，偏光片设置在AMOLED面板和盖板玻璃之间，控制IC与感光传感器连接；其中，感光传感器铺设在AMOLED面板的表面，且设置在AMOLED面板和偏光片之间；感光传感器用于在用户手指触摸盖板玻璃时，将用户手指反射的光信号转换为电信号；感光传感器还用于将电信号发送给控制IC；控制IC用于将电信号转换成指纹信号，并根据指纹信号进行指纹识别，在实现指纹识别的同时，提高了电子设备的屏占比。

Description

显示屏、电子设备及指纹识别方法
本申请要求于2017年08月02日提交中国专利局，申请号为201710650785.0、发明名称为“显示屏、电子设备及指纹识别方法”的中国专利申请，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备技术领域，尤其涉及一种显示屏、电子设备及指纹识别方法。
背景技术
随着科技的不断发展，为了方便解锁和安全支付等，指纹识别技术作为电子设备的一种重要的功能，已经成为人们生活中至关重要的一部分。
以电子设备为手机为例，目前的大多数手机都是通过将指纹模组前置的方式，且将指纹模组装配在手机的下巴区，通过下巴区的指纹模组采集用户的指纹信号，以完成指纹识别。
然而，由于下巴区会占用一定的面积，影响了显示屏的占比，从而使得手机的屏占比不高。
发明内容
本申请提供一种显示屏、电子设备及指纹识别方法，在实现指纹识别的同时，提高电子设备的屏占比。
第一方面，本申请提供一种显示屏，应用于电子设备，显示屏可以包括：
感光传感器、控制集成电路IC、有源矩阵有机发光二级体显示AMOLED面板、偏光片及盖板玻璃，偏光片设置在AMOLED面板和盖板玻璃之间，控制IC与感光传感器连接；
其中，感光传感器铺设在AMOLED面板的表面，且设置在AMOLED面板和偏光片之间；
感光传感器用于在用户手指触摸盖板玻璃时，将用户手指反射的光信号转换为电信号；
感光传感器还用于将电信号发送给控制IC；
控制IC用于将电信号转换成指纹信号，并根据指纹信号进行指纹识别。
本申请提供的显示屏，通过将感光传感器铺设在AMOLED面板的表面，使得在判断是否有指纹触摸和进行指纹识别的过程中，直接通过铺设在AMOLED面板的表面的感光传感器将用户手指反射的光信号转换成电信号，并将转换得到的电信号发送给控制IC，使得控制IC可以根据该电信号确定是否有手指触摸和进行指纹识别，从而实现在指纹识别的同时，提高电子设备的屏占比。
在一种可能的实现方式中，感光传感器均匀地铺设在AMOLED面板的表面。
在一种可能的实现方式中，两个感光传感器之间的距离为大于等于0.02毫米，且小于等于0.2毫米内任一值。
在一种可能的实现方式中，AMOLED面板在横向包括M个像素，AMOLED面板在纵向包括N个像素，AMOLED面板中每相邻的K个像素对应设置一个感光传感器；其中，M为大于等于720的整数，N为大于等于1080的整数，K为大于等于1，且小于等于10的整数。
在一种可能的实现方式中，还包括红外光敏元件，其中，
红外光敏元件设置在AMOLED面板的表面，使得在灭屏状态时，无需启动AMOLED面板自带的内置光源，可以通过该红外光敏元件进行补光，以采集用户手指反射的光信号，并将光信号转换成第一电信号，从而使得控制IC202可以根据该第一电信号确定手指触摸区域。
第二方面，本申请提供一种电子设备，可以包括：
存储器，处理器和上述上述第一方面任一种可能的实现方式中所示的的显示屏。
第三方面，本申请提供一种指纹识别方法，应用于电子设备，电子设备的显示屏包括：感光传感器、控制集成电路IC和有源矩阵有机发光二级体显示AMOLED面板到盖板玻璃依次设置的AMOLED面板、偏光片及盖板玻璃；控制IC与感光传感器连接；其中，感光传感器铺设在AMOLED面板的表面，且设置在AMOLED面板和偏光片之间；指纹识别方法可以包括：
在用户手指触摸盖板玻璃时，控制IC接收第一电信号，第一电信号为感光传感器根据用户手指反射的光信号转换得到的；
控制IC根据第一电信号，确定手指触摸区域；
在控制IC接收到指纹识别指令时，控制IC将第二电信号转换成指纹信号，并根据指纹信号进行指纹识别，第二电信号为手指触摸区域中的感光传感器根据用户手指反射的光信号转换得到的。
本申请提供的指纹识别方法，在用户手指触摸盖板玻璃时，控制IC通过接收感光传感器根据用户手指反射的光信号转换得到的第一电信号，并根据第一电信号，确定手指触摸区域；之后，在接收到指纹识别指令时，将手指触摸区域中的感光传感器转换得到的第二电信号转换成指纹信号，并根据指纹信号进行指纹识别，从而实现在指纹识别的同时，提高电子设备的屏占比。
在一种可能的实现方式中，控制IC根据第一电信号，确定手指触摸区域，可以包括：
控制IC根据第一电信号，确定初级触摸区域；控制IC确定初级触摸区域的中心点；控制IC根据中心点和预设指纹大小确定手指触摸区域。通过确定手指触摸区域，在指纹识别过程中，由于只有手指触摸区域中的感光传感器采集用户手指反射的光信号，而其他非手指触摸区域中的感光传感器无需采集用户手指反射的光信号，从而减少了数据采集量。
在一种可能的实现方式中，控制IC根据第一电信号，确定初级触摸区域，可以包括：
控制IC检测第一电信号的信号值；
若第一电信号的信号值大于或等于基准信号值，则控制IC确定第一电信号对应的感光传感器所在的区域为初级触摸区域。
在一种可能的实现方式中，控制IC根据第一电信号，确定手指触摸区域，可以包括：
控制IC检测第一电信号的信号值；控制IC确定第一电信号的信号值最大的感光传感器所在的位置为初级触摸区域的中心点；控制IC根据中心点和预设指纹大小确定手指触摸区域。通过确定手指触摸区域，在指纹识别过程中，由于只有手指触摸区域中的感光传感器采集用 户手指反射的光信号，而其他非手指触摸区域中的感光传感器无需采集用户手指反射的光信号，从而减少了数据采集量。
本申请提供的显示屏、电子设备及指纹识别方法，该显示屏包括：感光传感器、控制集成电路IC、有源矩阵有机发光二级体显示AMOLED面板、偏光片及盖板玻璃，偏光片设置在AMOLED面板和盖板玻璃之间，控制IC与感光传感器连接；其中，感光传感器铺设在AMOLED面板的表面，且设置在AMOLED面板和偏光片之间；感光传感器用于在用户手指触摸盖板玻璃时，将用户手指反射的光信号转换为电信号；感光传感器还用于将电信号发送给控制IC；控制IC用于将电信号转换成指纹信号，并根据指纹信号进行指纹识别。由此可见，本申请提供的显示屏，通过将感光传感器铺设在AMOLED面板的表面，使得在判断是否有指纹触摸和进行指纹识别的过程中，直接通过铺设在AMOLED面板的表面的感光传感器将用户手指反射的光信号转换成电信号，并将转换得到的电信号发送给控制IC，使得控制IC可以根据该电信号确定是否有手指触摸和进行指纹识别，从而实现在指纹识别的同时，提高电子设备的屏占比。
附图说明
图1为现有技术提供的一种显示屏的结构示意图；
图2为本申请实施例提供的一种显示屏的结构示意图；
图3为本申请实施例提供的一种感光传感器的铺设方式示意图；
图4为本申请实施例提供的另一种感光传感器的铺设方式示意图；
图5为本申请实施例提供的一种第一类感光传感器的分布示意图；
图6为本申请实施例提供的另一种第一类感光传感器的分布示意图；
图7为本申请实施例提供的一种根据第一电信号确定手指触摸区域的示意图；
图8为本申请实施例提供的另一种根据第一电信号确定手指触摸区域的示意图；
图9为本申请实施例提供的一种电子设备的结构示意图；
图10为本申请实施例提供的一种指纹识别方法的流程示意图。
具体实施方式
为了方便解锁和安全支付等，可以通过将指纹模组前置在手机的下巴区，通过下巴区的指纹模组采集用户的指纹信号，以完成指纹识别。但是通过该方式，影响了显示屏的占比，使得手机的屏占比不高。请参见图1所示，图1为现有技术提供的一种显示屏的结构示意图，现有的手机显示屏包括由里到外依次设置的有源矩阵有机发光二级体显示(Active Matrix Organic Light Emitting display，简称AMOLED)面板、电容触摸面板、偏光片及盖板玻璃；在判断是否有手指触摸时，是通过电容触摸面板采集手指在盖板玻璃上产生的电容信号，并 形成磁场信号，再根据磁场信号确定是否有手指触摸。而本申请提供的显示屏包括感光传感器、控制集成电路(ntegrated circuit，简称IC)、AMOLED面板、偏光片及盖板玻璃，偏光片设置在AMOLED面板和盖板玻璃之间，感光传感器铺设在AMOLED屏幕的表面，且设置在AMOLED屏幕和偏光片之间。由此可见，与现有的显示屏相比，本申请中的显示屏中没有设置电容触摸面板，而是直接将感光传感器铺设在AMOLED面板表面，在判断是否有手指触摸和进行指纹识别时，是通过感光传感器采集用户手指触摸盖板玻璃时手指反射的光信号，并将光信号转换成电信号，以使控制IC可以根据该电信号确定是否有手指触摸，并且在接收到指纹识别指令时，可以将电信号转换成指纹信息，从而实现在指纹识别的同时，提高电子设备的屏占比。
下面，以具体的实施例对本申请的技术方案进行详细说明。需要说明的是，下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
图2为本申请实施例提供的一种显示屏20的结构示意图，应用于电子设备，该电子设备可以为手机，也可以为平板电脑。请参见图2所示，该显示屏20可以包括：
感光传感器201、控制集成电路IC202、AMOLED面板203、偏光片204及盖板玻璃205，偏光片204设置在AMOLED面板203和盖板玻璃205之间，控制IC202与感光传感器201连接。
其中，感光传感器201铺设在AMOLED面板203的表面，且设置在AMOLED面板203和偏光片204之间。
感光传感器201用于在用户手指触摸盖板玻璃205时，将用户手指反射的光信号转换为电信号；感光传感器201还用于将电信号发送给控制IC202。
控制IC202用于将电信号转换成指纹信号，并根据指纹信号进行指纹识别。
本申请提供的显示屏，通过将感光传感器铺设在AMOLED面板的表面，使得在判断是否有指纹触摸和进行指纹识别的过程中，直接通过铺设在AMOLED面板的表面的感光传感器将用户手指反射的光信号转换成电信号，并将转换得到的电信号发送给控制IC，使得控制IC可以根据该电信号确定是否有手指触摸和进行指纹识别，从而实现在指纹识别的同时，提高电子设备的屏占比。
在上述实施例中，AMOLED面板203包括薄膜晶体管(Thin Film Transistor，简称TFT)及有机发光层，有机发光层上设置有红、黄及蓝三种子像素，这三种子像素以特定形式组合发出不同颜色的光；TFT可以通过矩阵排列的方式，精确控制每一个像素形成彩色图像。其中，每一个像素至少包括红(Red，简称R)、绿(Green，简称G)、蓝(Blue，简称B)三个子像素。常用的像素格式为Bayer格式，该Bayer格式的像素由RGBG四个子像素构成。
示例的，在本申请实施例中，感光传感器201为光敏电阻或光导管时，其工作原理是：在特定波长的光照射下，光照产生的载流子都参与导电，当用户手指触摸盖板玻璃205时，手指反射的光线到光敏电阻或光导管，当光子能量大于半导体材料的禁带宽度，价带中的电子吸收一个光子的能量后可跃迁到导带，并在价带中产生一个带正电荷的空穴，电子奔向电源的正极，空穴奔向电源的负极，这种由光照产生的电子与空穴对增加了半导体材料中载流子的数目，使得光敏电阻或光导管的阻值迅速减小，从而将光信号转换为电信号。当感光传感器201为光敏二极管或光敏三极管时，其工作原理与光敏电阻类似，在此，本申请实施例 不再进行赘述。
在判断是否有手指触摸和进行指纹识别的过程中，当用户手指触摸盖板玻璃205时，感光传感器201可以利用光的折射和反射原理，手指在显示屏20内置光源的照射下，射出的光线经手指表面反射回屏幕内，反射光穿透偏光片204至感光传感器201上，感光传感器201可以将其自身的光信号转换成电信号，并将各自转化得到的电信号发送给控制IC202，控制IC202可以根据该电信号计算得到手指触摸的坐标信息，从而可以确定手指触摸区域；在确定手指触摸区域之后，控制IC202可以将手指触摸区域中的感光传感器201转换为指纹信息，在转换过程中，由于指纹的脊线与盖板玻璃205表面接触，谷线不与盖板玻璃205表面接触，因此，对应产生的电信号的强度不同，从而将感光传感器201发送的电信号转换为指纹信号，由于感光传感器201密度足够大，控制IC202可以将各个指纹信号合成一幅指纹图像，从而进行指纹识别。需要说明的是，本申请中的控制IC202，还可以控制显示屏20进行显示，如显示一张图片，或者显示一条消息等。
那么，在判断是否有手指触摸和进行指纹识别的过程中，感光传感器201是以什么方式铺设在AMOLED面板203上呢？可选的，在本申请实施例中，感光传感器201可以通过两种可能的方式铺设在AMOLED面板203的表面，具体如下所示：
在第一种可能的实现方式中，请参见图3所示，图3为本申请实施例提供的一种感光传感器的铺设方式示意图。在图3中，感光传感器201均匀地铺设在AMOLED面板203的表面，也可以非均匀地铺设在AMOLED面板203的表面，只要确保感光传感器201可以覆盖到AMOLED面板203表面的每一个区域即可。进一步地，在均匀铺设时，两个感光传感器201之间的距离为大于等于0.02毫米，且小于等于0.2毫米内任一值，示例的，在本申请实施例中，两个感光传感器201可以以0.05毫米的间隔均匀地铺设在AMOLED面板203的表面。
在第二种可能的实现方式中，请参见图4所示，图4为本申请实施例提供的另一种感光传感器的铺设方式示意图。在图4中，AMOLED面板203在横向包括M个像素，AMOLED面板203在纵向包括N个像素，AMOLED面板203中每相邻的K个像素对应设置一个感光传感器201；其中，M为大于等于720的整数，N为大于等于1080的整数，K为大于等于1，且小于等于10的整数。示例的，在本申请实施例中，每一个像素可以看作是AMOLED面板203上的一个小方格，每一个小方格(即像素)可以对应设置一个感光传感器201。在显示图案时，由于像素很小，且在有机发光层上设置的比较密集，因此，即使设置感光传感器的部分没有像素，也不会影响图案的正常显示。
在将感光传感器201铺设完成之后，当用户的手指触摸AMOLED面板203外部的盖板玻璃205时，若手机屏幕处于亮屏状态时，则AMOLED面板203自带的内置光源会射出光线，感光传感器201可以直接将手指反射的光信号转化为第一电信号；而在手机屏幕处于灭屏状态时，AMOLED面板203自带的光源不会射出光线，感光传感器201无法采集用户手指反射的光信号，更无法将光信号转换成第一电信号，此时，控制IC202可以控制AMOLED面板203自带的内置光源启动，使手机屏幕由灭屏状态变成亮屏状态，从而采集用户手指反射的光信号，并将光信号转换为第一电信号。此外，在手机屏幕处于灭屏状态时，可以在AMOLED面板203上设置一个红外光敏元件，使得在灭屏状态时，无需启动AMOLED面板 203自带的内置光源，可以通过该红外光敏元件进行补光，以采集用户手指反射的光信号，并将光信号转换成第一电信号，从而使得控制IC202可以根据该第一电信号确定手指触摸区域。需要说明的是，本申请中的红外光敏元件与感光传感器201均设置在AMOLED面板203的表面，且其设置方式与感光传感器201的设置方式类似，即红外光敏元件可以均匀地铺设在AMOLED面板203的表面，当然，也可以在AMOLED面板203中每相邻的K个像素对应设置一个红外光敏元件，此处不再进行赘述。
在确定手指触摸区域的过程中，控制IC202可以可以控制铺设在AMOLED面板203表面的所有感光传感器201采集用户手指反射的光信号，并接收所有感光传感器发送的将光信号转换得到的第一电信号，当然，为了减少数据的检测量，也可以控制铺设在AMOLED面板203表面的部分传感器，即第一类感光传感器2011采集用户手指反射的光信号，并接收第一类感光传感器2011发送的将光信号转换得到的第一电信号。示例的，请参见图5所示，图5为本申请实施例提供的一种第一类感光传感器2011的分布示意图。其中，第一类感光传感器2011可以为AMOLED面板203中特定行的感光传感器，如第一行、第三行、第五行及第七行等奇数行；也可以为第二行、第四行、第六行及第八行等偶数行，请参见图6所示，图6为本申请实施例提供的另一种第一类感光传感器2011的分布示意图；当然，也可以第一行、第五行、第九行等间隔多行。在此，对于第一类感光传感器，具体可以根据实际需要进行选取，只要控制IC202可以根据第一类转换器2011发送的第一电信号确定手指触摸区域即可。
那么，控制IC202如何根据第一类转换器2011发送的第一电信号确定手指触摸区域呢？可选的，在本申请实施例中，控制IC202根据第一电信号，确定手指触摸区域可以通过以下两种可能的方式实现，具体如下：
在第一种可能的实现方式中：控制IC202可以根据第一电信号确定初级触摸区域；并确定初级触摸区域的中心点；之后，再根据中心点和预设指纹大小确定手指触摸区域。
其中，预设指纹大小通常可以根据用户手指尖的大小进行设置。通常情况下，目标采集区域可以为以中心点为圆心的圆形区域，该圆形区域的直径可以为大于等于5毫米，且小于等于10毫米内的任一值。
为了更清楚地说明第一种可能的实现方式，请参见图7所示，图7为本申请实施例提供的一种根据第一电信号确定手指触摸区域的示意图。控制IC202在确定第一类感光传感器2011启动之后，当用户的手指触摸盖板玻璃205表面时，第一类感光传感器2011就会采集用户手指反射的光信号，并将该光信号转换成第一电信号，之后再将该第一电信号发送给控制IC202，控制IC202将每一个第一类感光传感器2011的第一电信号的信号值与基准信号值进行比较，若第一电信号的信号值大于或等于基准信号值，则确定第一电信号对应的感光传感器所在的区域为初级触摸区域M(即用户手指与盖板玻璃205的接触区域)；在初级采集区域M确定之后，控制IC202可以根据该初级采集区域M中第一类感光传感器2011的第一电信号建立指纹模型，由于手指中心点的电信号最强，手指中心点周围的电信号逐渐减弱，因此，建立的指纹模型类似一个球面模型，根据该球面模型可以确定球心，该球心即为该初级触摸区域M的中心点A，由于用户手指尖的大小有限，因此，在确定初级触摸区域M的中心点A之后，可以根据该中心点A和预设指纹大小确定一个直径长为5毫米的圆形区域，该圆形区域即为手指触摸区域MD。
在第二种可能的实现方式中：控制IC202可以检测第一类感光传感器2011中每一个感光传感器的第一电信号的信号值；并确定信号值最大的感光传感器所在的位置为初级触摸区域的中心点；之后再根据中心点和预设指纹大小确定手指触摸区域。
为了更清楚地说明第二种可能的实现方式，请参见图8所示，图8为本申请实施例提供的另一种根据第一电信号确定手指触摸区域的示意图。控制IC202在确定第一类感光传感器2011启动之后，当用户的手指触摸盖板玻璃205表面时，第一类感光传感器2011就会采集用户手指反射的光信号，并将该光信号转换成第一电信号，之后再将该第一电信号发送给控制IC202，控制IC202可以将信号值最大的感光传感器所在的位置确定为初级采集区域M的中心点A，同样的，由于用户手指尖的大小有限，因此，在确定初级触摸区域M的中心点A之后，就可以根据该中心点A和预设指纹大小确定一个直径长为5毫米的圆形区域，该圆形区域即为手指触摸区域。
请结合图7和图8所示，在通过上述两种可能的实现方式确定手指触摸区域MD之后，控制IC202就可以控制该手指触摸区域MD中的第二类感光传感器2012启动，并接收手指触摸区域MD中的第二类感光传感器2012根据用户手指反射的光信号转换得到的第二光信号，再将第二电信号转换成指纹信号，以根据指纹信号进行指纹识别。由此可见，本申请实施例提供的显示屏，在判断是否有手指触摸时，通过铺设在AMOLED面板203表面的部分传感器(即第一类感光传感器2011)采集用户手指反射的光信号，并将光信号转换得到的第一电信号，从而使得控制IC202可以根据第一电信号确定初级触摸区域；并确定进行指纹识别时，同样控制铺设在AMOLED面板203表面的部分传感器(即手指触摸区域中的第二类感光传感器2012)启动，并接收第二类感光传感器2012根据用户手指反射的光信号转换得到的第二光信号，再将第二电信号转换成指纹信号，从而实现在指纹识别的同时，提高电子设备的屏占比。并且，在指纹识别过程中，由于只有手指触摸区域中的第二类感光传感器采集用户手指反射的光信号，而其他非手指触摸区域中的感光传感器无需采集用户手指反射的光信号，从而减少了手机的数据采集量。
本申请实施例提供的显示屏20，该显示屏20包括感光传感器201、控制IC202和AMOLED面板203到盖板玻璃205依次设置的AMOLED面板203、偏光片204及盖板玻璃205；控制IC202与感光传感器201连接；其中，感光传感器201铺设在AMOLED面板203的表面，且设置在AMOLED面板203和偏光片204之间；感光传感器201用于在用户手指触摸盖板玻璃205时，将用户手指反射的光信号转换为电信号；感光传感器201还用于将电信号发送给控制IC202；控制IC202用于将电信号转换成指纹信号，并根据指纹信号进行指纹识别。由此可见，本申请实施例提供的显示屏20，在判断是否有手指触摸时，通过铺设在AMOLED面板203表面的部分传感器(即第一类感光传感器2011)采集用户手指反射的光信号，并将光信号转换得到的第一电信号，从而使得控制IC202可以根据第一电信号确定初级触摸区域；并确定进行指纹识别时，同样控制铺设在AMOLED面板203表面的部分传感器(即手指触摸区域中的第二类感光传感器2012)启动，并接收第二类感光传感器2012根据用户手指反射的光信号转换得到的第二光信号，再将第二电信号转换成指纹信号，从而实现在指纹识别的同时，提高电子设备的屏占比。并且，在指纹识别过程中，由于只有手指触摸区域中的第二类感光传感器2012采集用户手指反射的光信号，而其他非手指触摸区域中的感光传感器无 需采集用户手指反射的光信号，从而减少了手机的数据采集量。
进一步地，为了更好地说明手机在指纹识别过程中采集的数据量，假设AMOLED面板的尺寸为6英尺，长和宽的比例为18：9，即68.16毫米*136.32毫米，在整个AMOLED面板区域中，预设每一整数毫米的感光传感器为第一类感光传感器，共有68*136＝9248个第一类感光传感器，在通过第一类感光传感器确定手指触摸区域的过程中，需要采集的数据量为：9284*12bits*120HZ＝13.3M；进一步地，在通过手指触摸区域中的第二类感光传感器采集用户手指反射的光信号的过程中，共有68*136+6*6*1080*2160/(68.16*136.32)＝9248+9038＝18286个感光传感器，需要采集的数据量：18286*12bits*120Hz＝26.3M，由此可见，本申请实施例提供的显示屏，在指纹识别的同时，提高电子设备的屏占比。并且，在指纹识别过程中，由于只有手指触摸区域中的第二类感光传感器采集用户手指反射的光信号，而其他非手指触摸区域中的感光传感器无需采集用户手指反射的光信号，从而减少了手机的数据采集量。
图9为本申请实施例提供的一种电子设备90的结构示意图，请参见图9所示，该电子设备90可以包括：
存储器901，处理器902和上述实施例所示的显示屏20。
本申请实施例所示的电子设备90，可以执行上述显示屏20实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图10为本申请实施例提供的一种指纹识别方法的流程示意图，应用于电子设备，电子设备的显示屏包括：感光传感器、控制集成电路IC和有源矩阵有机发光二级体显示AMOLED面板到盖板玻璃依次设置的AMOLED面板、偏光片及盖板玻璃；控制IC与感光传感器连接；其中，感光传感器铺设在AMOLED面板的表面，且设置在AMOLED面板和偏光片之间，请参见图10所示，该指纹识别方法包括：
S1001、在用户手指触摸盖板玻璃时，控制IC接收第一电信号。
其中，第一电信号为感光传感器根据用户手指反射的光信号转换得到的。
S1002、控制IC根据第一电信号，确定手指触摸区域。
S1003、在控制IC接收到指纹识别指令时，控制IC将第二电信号转换成指纹信号，并根据指纹信号进行指纹识别。
其中，第二电信号为手指触摸区域中的感光传感器根据用户手指反射的光信号转换得到的。
可选的，在本申请实施例中，S1002控制IC根据第一电信号，确定手指触摸区域，可以通过以下两种可能的方式实现：
在第一种可能的实现方式中：控制IC根据第一电信号，确定初级触摸区域；之后再确定初级触摸区域的中心点；并根据中心点和预设指纹大小确定手指触摸区域。
其中，控制IC根据第一电信号，确定初级触摸区域，可以包括：
控制IC检测第一电信号的信号值；若第一电信号的信号值大于或等于基准信号值，则确定第一电信号对应的感光传感器所在的区域为初级触摸区域。
在第二种可能的实现方式中：控制IC检测第一电信号的信号值；并确定第一电信号的信号值最大的感光传感器所在的位置为初级触摸区域的中心点；再根据中心点和预设指纹大小确定手指触摸区域。
本申请实施例所示的指纹识别方法，可以通过上述显示屏实施例所示的技术方案实现，其实现原理以及有益效果类似，此处不再进行赘述。

Claims (10)

  1. 一种显示屏，其特征在于，应用于电子设备，所述显示屏包括：
    感光传感器、控制集成电路IC、有源矩阵有机发光二级体显示AMOLED面板、偏光片及盖板玻璃，所述偏光片设置在所述AMOLED面板和所述盖板玻璃之间，所述控制IC与所述感光传感器连接；
    其中，所述感光传感器铺设在所述AMOLED面板的表面，且设置在所述AMOLED面板和所述偏光片之间；
    所述感光传感器用于在用户手指触摸所述盖板玻璃时，将用户手指反射的光信号转换为电信号；
    所述感光传感器还用于将所述电信号发送给所述控制IC；
    所述控制IC用于将所述电信号转换成指纹信号，并根据所述指纹信号进行指纹识别。
  2. 根据权利要去1所述的显示屏，其特征在于，
    所述感光传感器均匀地铺设在所述AMOLED面板的表面。
  3. 根据权利要求2所述的显示屏，其特征在于，
    所述两个感光传感器之间的距离为大于等于0.02毫米，且小于等于0.2毫米内任一值。
  4. 根据权利要求1所述的显示屏，其特征在于，
    所述AMOLED面板在横向包括M个像素，所述AMOLED面板在纵向包括N个像素，所述AMOLED面板中每相邻的K个像素对应设置一个感光传感器；其中，M为大于等于720的整数，N为大于等于1080的整数，K为大于等于1，且小于等于10的整数。
  5. 根据权利要求1-4任一项所述的显示屏，其特征在于，还包括红外光敏元件，其中，
    所述红外光敏元件设置在所述AMOLED面板的表面。
  6. 一种电子设备，其特征在于，包括：
    存储器，处理器和上述权利要求1-5任一项所述的显示屏。
  7. 一种指纹识别方法，其特征在于，应用于电子设备，所述电子设备的显示屏包括：感光传感器、控制集成电路IC和有源矩阵有机发光二级体显示AMOLED面板到盖板玻璃依次设置的所述AMOLED面板、偏光片及所述盖板玻璃；所述控制IC与所述感光传感器连接；其中，所述感光传感器铺设在所述AMOLED面板的表面，且设置在所述AMOLED面板和所述偏光片之间；所述指纹识别方法包括：
    在用户手指触摸盖板玻璃时，所述控制IC接收第一电信号，所述第一电信号为所述感光传感器根据用户手指反射的光信号转换得到的；
    所述控制IC根据所述第一电信号，确定手指触摸区域；
    在所述控制IC接收到指纹识别指令时，控制IC将第二电信号转换成指纹信号，并根据所述指纹信号进行指纹识别，所述第二电信号为所述手指触摸区域中的感光传感器 根据用户手指反射的光信号转换得到的。
  8. 根据权利要求7所述的方法，其特征在于，所述控制IC根据所述第一电信号，确定手指触摸区域，包括：
    所述控制IC根据所述第一电信号，确定初级触摸区域；
    所述控制IC确定所述初级触摸区域的中心点；
    所述控制IC根据所述中心点和预设指纹大小确定所述手指触摸区域。
  9. 根据权利要求8所述的方法，其特征在于，所述控制IC根据所述第一电信号，确定初级触摸区域，包括：
    所述控制IC检测所述第一电信号的信号值；
    若所述第一电信号的信号值大于或等于基准信号值，则所述控制IC确定所述第一电信号对应的感光传感器所在的区域为所述初级触摸区域。
  10. 根据权利要求7所述的方法，其特征在于，所述控制IC根据所述第一电信号，确定手指触摸区域，包括：
    所述控制IC检测所述第一电信号的信号值；
    所述控制IC确定所述第一电信号的信号值最大的感光传感器所在的位置为所述初级触摸区域的中心点；
    所述控制IC根据所述中心点和预设指纹大小确定所述手指触摸区域。
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