WO2019153151A1 - 指纹采集装置和指纹采集方法 - Google Patents

指纹采集装置和指纹采集方法 Download PDF

Info

Publication number
WO2019153151A1
WO2019153151A1 PCT/CN2018/075655 CN2018075655W WO2019153151A1 WO 2019153151 A1 WO2019153151 A1 WO 2019153151A1 CN 2018075655 W CN2018075655 W CN 2018075655W WO 2019153151 A1 WO2019153151 A1 WO 2019153151A1
Authority
WO
WIPO (PCT)
Prior art keywords
row
sensor
component
fingerprint
analog front
Prior art date
Application number
PCT/CN2018/075655
Other languages
English (en)
French (fr)
Inventor
王希林
王涛
钟鼎
邢骁
马威
刘俊彦
禹秀泳
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2018/075655 priority Critical patent/WO2019153151A1/zh
Priority to CN201880088470.4A priority patent/CN111684456B/zh
Priority to EP18905678.1A priority patent/EP3745297A4/en
Publication of WO2019153151A1 publication Critical patent/WO2019153151A1/zh
Priority to US16/986,609 priority patent/US11308305B2/en

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1335—Combining adjacent partial images (e.g. slices) to create a composite input or reference pattern; Tracking a sweeping finger movement
    • 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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • 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
    • G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
    • G06V40/1388—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using image processing
    • 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
    • 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
    • G06V40/1341—Sensing with light passing through the finger

Definitions

  • the present application relates to the field of fingerprint recognition and, more particularly, to a fingerprint collection device and a fingerprint collection method.
  • the working principle of implementing the fingerprint recognition under the mobile phone is as follows: when the screen of the mobile phone is lit and a finger is placed on the screen of the mobile phone, the finger is illuminated, and the light reflected by the fingerprint of the finger passes through the light between the pixels of the screen. After the gap, under the action of the convergence of the microlens or the small hole, the image is projected on the sensor array below the screen, and then the sensor converts the optical signal projected thereon into an electrical signal, and the fingerprint image can be obtained according to the electrical signal. .
  • the present invention provides a fingerprint collection method and related device. While collecting image information of a fingerprint, it also helps to reduce the size of the fingerprint collection device, and facilitates integration of the fingerprint collection device into the electronic device.
  • the present application provides a fingerprint collection device including a sensor array, a line scan circuit, a switch component, and an analog front end (AFE).
  • a fingerprint collection device including a sensor array, a line scan circuit, a switch component, and an analog front end (AFE).
  • AFE analog front end
  • the sensor array includes M rows and N columns of sensor units, the analog front end components include L input channels, M and N are positive integers greater than 1, and L is a positive integer less than N.
  • the N columns of sensor units are divided into groups of sensor units, and each of the plurality of groups of sensor units includes a sensor unit having a column number less than or equal to L.
  • the data lines of the plurality of sets of sensor units are time-multiplexed by the switch components to the L input channels of the analog front end components.
  • the line scan circuit is used to output the line scan signal of the sensor array row by row.
  • the sensor unit in the sensor array is configured to: generate original fingerprint data, and output original fingerprint data from the data line when receiving the line scan signal.
  • the switch component is configured to: select the raw fingerprint data of any one of the plurality of sets of sensor units to output to the L input channels of the analog front end component.
  • the analog front end component is configured to convert raw fingerprint data output by the any set of sensor units into digital fingerprint data.
  • the sensor unit in the sensor array is used to generate and save raw image data (analog electrical signals) of the fingerprint.
  • the row scan circuit is responsible for the scanning of the row scan lines in the sensor array (ie, the row scan circuit is equivalent to a shift register, and the sensor array is progressively scanned under the control of the clock signal).
  • the switching component is a multi-channel signal multiplexing device.
  • the row scanning circuit is combined with the switching component for selecting image data of the fingerprint output from the sensor unit in the partial column from the sensor array, that is, outputting the fingerprint image data of the finger.
  • the analog front end component is used to convert the simulated electrical signals generated and saved by the sensor array into digital signals to obtain digital image data of the fingerprint.
  • the line scanning circuit and the switch component may be located at an edge position of the fingerprint collection device, for example, a non-display area of the position fingerprint collection device.
  • the row scanning circuit may include a gate on array (GOA), and the sensor array may include a thin film transistor (TFT) substrate and an organic photodiode (OPD) disposed on the TFT substrate.
  • the switching component can be a TFT.
  • the switching component is a multi-channel signal multiplexing device
  • the data lines of the multi-column sensor unit can be multiplexed with the same input channel of the analog front-end component, thereby reducing the number of input channels of the analog front-end component, thereby reducing fingerprint collection.
  • the size of the device is a multi-channel signal multiplexing device.
  • the switch component includes a plurality of sets of switches, and the plurality of sets of switches are in one-to-one correspondence with the plurality of sets of sensor units, and the data lines of each of the plurality of sets of sensor units pass through the plurality of sets of switches A set of switches is connected to the L input channels of the analog front end components.
  • the fingerprint collection device also includes a first control component for transmitting a clock signal to the line scan circuitry.
  • the row scanning circuit is specifically configured to output the row scanning signals of the sensor array row by row according to the clock signal.
  • the first control component is further configured to send an enable signal to the plurality of sets of switches, the enable signal for turning on the target group switch of the plurality of sets of switches and turning off the other of the plurality of sets of switches.
  • the switch component is configured to: output original fingerprint data in the target group sensor unit corresponding to the target group switch to the L input channels.
  • each set of switches includes L switches; each of the plurality of sets of sensor units includes L columns of sensor units; and the data lines of the L columns of sensor units in each set of sensor units pass through a corresponding one
  • the L switches in the group switch are connected to the L input channels of the front-end analog component one by one.
  • the enable signals of the switches in the same group may be the same.
  • the sensor array can be divided into a plurality of regions by columns.
  • each region includes multiple columns of sensor units
  • the sensor units in different columns in each region are respectively connected to different input channels of the analog front end components through switches, but
  • the sensor units in the columns in the different zones are connected via switches to the same input channel of the analog front-end components. That is, one of the plurality of switches connected to the same input channel of the analog front end component can be turned on, and the other switches are turned off to realize the input of the sensor unit and the analog front end component connected to the turned-on switch. Signal transmission between channels. Switches in the same area can be turned on or off using the same signal.
  • the 1024 column sensor units can be divided into 4 regions, starting from the first column, and each 256 columns is an area.
  • the 256 columns of sensor units in each zone are a group of sensor units with a total of 4 sets of sensor units.
  • the switch component includes four sets of switches, each set of switches including 256 switches. The four sets of switches correspond to the four sets of sensor units one by one.
  • the data lines of the 256 columns of sensor units in each group of sensor units are connected one by one through 256 input channels of the analog front end components through corresponding 256 switches.
  • 1024 columns of sensor units in the 4 regions multiplex the 256 input channels of the analog front end components.
  • each of the four columns of sensor units multiplexes one input channel of the analog front end component.
  • the line scanning circuit includes M output channels
  • the switch component includes a plurality of sets of switches corresponding to the plurality of sets of sensor units, each set of switches including M switches, each set of sensor units
  • the scan lines are connected to the M output channels of the row scanning circuit through a corresponding one of the plurality of switches, and the data lines of each group of sensor units are connected to the L input channels of the analog front end component.
  • the fingerprint collection device also includes a first control component for transmitting a clock signal to the line scan circuitry.
  • the row scanning circuit is specifically configured to output the row scanning signals of the sensor array row by row according to the clock signal.
  • the first control component is further configured to send an enable signal to the plurality of sets of switches, the enable signal for turning on the target group switch of the plurality of sets of switches and turning off the other of the plurality of sets of switches.
  • the switch component is configured to: output original fingerprint data in the target group sensor corresponding to the target group switch to the L input channels.
  • the sensor array can be divided into a plurality of regions by columns.
  • each region includes multiple columns of sensor units, the data lines of the sensor units of different columns in each region are connected to different input channels of the analog front end components, but different regions The data lines of the sensor cells in the column are connected to the same input channel of the analog front end component.
  • the sensor unit located in the same area of each row of sensor units is connected to an output channel of the line scanning circuit through a switch.
  • the 1024 column sensor units can be divided into four regions. Among them, starting from the first column, each 256 columns is an area.
  • the line scan circuit includes 2048 output channels.
  • the 256 columns of sensor units in each zone are a group of sensor units with a total of 4 sets of sensor units.
  • the switch component includes four sets of switches, each set of switches including 2048 switches, and 2048 switches of each set of switches are respectively connected to the 2048 output channels of the row scanning circuit.
  • the four sets of switches correspond to the four sets of sensor units one by one.
  • the data lines of the 256 columns of sensor units in each group of sensor units are connected one to one with the 256 input channels of the analog front end components.
  • 1024 columns of sensor units in the 4 regions multiplex the 256 input channels of the analog front end components.
  • each of the four columns of sensor units multiplexes one input channel of the analog front end component.
  • the group of switches connected to the sensor unit in the region can be turned on, and the sensor unit connected to the other region can be turned off.
  • the switch allows the sensor unit in only the area to output raw fingerprint data to the input channel of the analog front end component.
  • the set of switches connected to the sensor unit in the other area can be turned on, and the switch connected to the sensor unit in the other area can be turned off, so that only the other can be made
  • the sensor unit in the area outputs raw fingerprint data to the input channel of the analog front end unit. Switches in the same area can be turned on or off using the same enable signal.
  • the fingers can be spread over multiple areas, for example in two areas.
  • the switches corresponding to the sensor units in the plurality of regions can be turned on and off in multiple times. Thereby, the original fingerprint data generated by the sensor units in the plurality of regions can be acquired.
  • the first control component is further configured to output an acquisition timing signal to the analog front end component when outputting the clock signal to the row scanning circuit and output the enable signal to the switching component, and acquiring the timing signal for controlling the analog front end
  • the component receives the raw fingerprint data output by the sensor array.
  • the first control component may be a dedicated chip of the fingerprint collection device, and may be, for example, a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC).
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • the switch connected to the sensor unit in the same area can be turned on or off by the same enable signal.
  • the fingerprint collection device further includes a screen and a second control component.
  • the second control unit is for determining position information of the finger on the screen and transmitting the position information of the finger to the first control unit.
  • the first control component is specifically configured to: determine a start row and an end row in the M row sensor unit according to the position information of the finger; determine the target group sensor unit from the plurality of sets of sensor units according to the position information of the finger; When the start line outputs a line scan signal, the acquisition timing signal is output to the analog front end component until the line scan circuit outputs a line scan signal to the end line, and stops outputting the acquisition timing signal to the analog front end part.
  • the target group switch corresponds to the target group sensor unit, and the sensor unit in the area corresponding to the position information of the finger in the sensor array is included between the start line and the end line and in the target group sensor unit.
  • the screen may be an optical liquid crystal display (LCD).
  • LCD optical liquid crystal display
  • the starting line may be the first line in the M line.
  • the first control component may be integrated in the second control component or the first control component may be a second control component.
  • the second control component may be an application processor in an electronic device to which the fingerprint collection device is applied.
  • the area corresponding to the positional information of the finger includes an area having a size of 10 mm * 10 mm centered on the position indicated by the position information.
  • each switch includes a thin film transistor.
  • each sensor unit in the sensor array includes a thin film transistor and an organic photodiode for generating and storing raw fingerprint data
  • the thin film transistor is configured to: output when receiving a line scan signal Raw fingerprint data generated by an organic photodiode.
  • the present application provides a fingerprint collection method, which is performed by the fingerprint collection device in the first aspect.
  • the fingerprint collection method includes:
  • the row scanning circuit outputs the line scan signal of the sensor array row by row
  • the sensor unit in the sensor array generates original fingerprint data, and outputs original fingerprint data from the data line when receiving the line scan signal;
  • the switch component selects to output raw fingerprint data in any one of the plurality of sets of sensor units to the L input channels of the analog front end component;
  • the analog front end component converts the raw fingerprint data output by the arbitrary set of sensor units into digital fingerprint data.
  • the fingerprint collection method further includes:
  • the first control unit sends a clock signal to the line scan circuit
  • the first control component sends an enable signal to the plurality of sets of switches, the enable signal for turning on the target group switch of the plurality of sets of switches and turning off the other of the plurality of sets of switches.
  • the row scanning circuit outputs the row scanning signals of the sensor array row by row
  • the line scanning circuit outputs the row scanning signals of the sensor array row by row according to the clock signal.
  • the switch component selects and outputs the original fingerprint data of any one of the plurality of sets of sensors to the L input channels of the analog front end component, and the switch component selects the target group of the target group corresponding to the target group switch according to the enable signal.
  • the original fingerprint data is output to the L input channels.
  • the fingerprint collection device further includes:
  • the first control component outputs an acquisition timing signal to the analog front end component when the clock signal and the enable signal are output, and the acquisition timing signal is used to control the analog front end component to receive the original fingerprint data output by the sensor array.
  • the analog front end component converts the original fingerprint data output by the any one of the sensor units into digital fingerprint data, including:
  • the analog front end component When the analog front end component receives the acquisition timing signal, the original fingerprint data output by the any one of the sensor units is converted into digital fingerprint data.
  • the fingerprint collection method further includes: the second control component determines location information of the finger on the screen, and transmits the location information to the first control component.
  • the first control unit outputs a clock signal to the row scanning circuit, outputs an enable signal to the switching component, and outputs an acquisition timing signal to the analog front end component, including:
  • the first control unit determines a start line and an end line in the M line sensor unit according to the position information
  • An enable signal for turning on the target group switch is sent to the target group switch, and an enable signal for turning off the other group switch is sent to the other group switches of the plurality of sets of switches.
  • the sensor in the area corresponding to the position information in the sensor array is included.
  • the fingerprint collection device comprises: the second control component transmitting the location information to the screen; and the screen lighting the pixels on the screen in the region corresponding to the location information according to the location information.
  • the area corresponding to the position information includes an area having a size of 10 mm * 10 mm centered on the position indicated by the position information.
  • each switch includes a thin film transistor.
  • each sensor unit includes a thin film transistor and an organic photodiode for generating raw fingerprint data, and the thin film transistor is configured to output an original fingerprint generated by the organic photodiode when receiving the line scan signal. data.
  • the above fingerprint collection device and fingerprint collection method can be used for a full screen terminal device.
  • the present application provides a computer readable storage medium storing program code for execution by a fingerprint collection device, the program code comprising means for performing the fingerprint collection method of the second aspect instruction.
  • the present application provides a computer program product comprising instructions.
  • the fingerprint collection device is caused to perform the fingerprint collection method in the second aspect.
  • the present application provides a system chip, including an input/output interface and at least one processor, where the at least one processor is configured to execute an instruction, and invoke an input/output interface to perform the fingerprint collection method in the second aspect. Operation.
  • the present disclosure provides a display screen, including the first aspect and the fingerprint collection device provided by various implementation manners of the first aspect, further comprising a display component, the display component being located above the fingerprint collection device, and the display component is used for performing Components for image display (such as various display components based on OLED, TFT, LCD, LED).
  • the present application provides a terminal, including the first aspect and the fingerprint collection device provided by various implementation manners of the first aspect, and further includes a processor (such as a processor of the HiSilicon series or a processing of the Qualcomm Xiaolong series) Various devices required for terminals such as memory, housing, and battery.
  • the processor can be configured to receive data from the fingerprint collection device and process the same.
  • FIG. 1 is a schematic diagram of the principle of the fingerprint identification method of the present application.
  • FIG. 2 is a schematic diagram of an application scenario of a fingerprint identification method according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a fingerprint collection device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a fingerprint collection device according to another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a fingerprint collection device according to another embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a fingerprint collection device according to another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a fingerprint identification method according to another embodiment of the present application.
  • the process of fingerprint recognition under the screen includes: the light emitted by the display screen 120 is irradiated to the finger 110; the fingerprint on the finger 110 reflects the light; and the light 125 reflected by the fingerprint on the finger 110 passes through the display screen 120.
  • the slit of the light is projected onto the sensor array 140 under the convergence of the lens 130; the sensor unit 141 of the sensor array 140 converts the optical signal projected onto itself into an electrical signal, which is the original data of the fingerprint. It can also be called raw fingerprint data.
  • the electrical signal converted by the sensor unit 141 is analog, it is also necessary to convert the analog electrical signal into a digital signal, thereby acquiring image information of the fingerprint.
  • the sensor array 140 If the display area of the display screen 120 is large, for example, when the display screen 120 is a full screen, in order to achieve full-screen screen fingerprint collection, the sensor array 140 generates a large amount of original fingerprint data, thereby requiring more modules.
  • the conversion component converts the original fingerprint data to analog to digital.
  • the current analog-to-digital conversion components are relatively large in size, and a larger number of analog-to-digital conversion components increase the size of the fingerprint acquisition device.
  • the present application proposes a fingerprint collection device and a fingerprint collection method, which output the same input channel of the data line multiplexing analog-to-digital conversion component of the original fingerprint data through a plurality of sensor units, that is, the original output of the plurality of sensor units.
  • the manner in which the fingerprint data is multiplexed into the same analog-to-digital conversion component can reduce the number of analog-to-digital conversion components, thereby reducing the size of the device for fingerprint acquisition.
  • FIG. 2 is a schematic diagram of an application scenario of a fingerprint collection device and a fingerprint collection method of the present application.
  • the same reference numerals in FIG. 2 and FIG. 1 denote the same or similar meanings, and are not described herein again. Only the contents of FIG. 2 which are different from those in FIG. 1 will be described below.
  • the touch screen 105 is located above the display screen 120. Of course, this is just an example, and the touch screen 105 can also be located below the display screen 120. Touch screen 105 and display screen 120 may be referred to as screens.
  • the touch screen 105 is configured to detect touch information of a user's finger on the screen and transmit the touch information to the processor 150.
  • the processor 150 can determine the location information of the user's finger on the screen according to the touch information detected by the touch screen 105.
  • the processor 150 may send the digital fingerprint data or the digital fingerprint data and the digital fingerprint pre-stored in the processor 150.
  • the data is matched. If the matching is successful, the corresponding operations, such as unlocking the screen or paying, can be performed.
  • the fingerprint collection device can include a sensor array 310, a row scan circuit 320, a switch component 330, an analog front end component 340, a first control component 350, and a second control component 360.
  • the sensor array 310 may include a TFT substrate and an OPD disposed on the TFT substrate.
  • the TFT substrate includes M rows and N columns of TFTs, and the TFT substrates are provided with M rows and N columns of OPDs, and the M rows and N columns of OPDs are connected to the M rows and N columns of TFTs one by one.
  • Each TFT is used to gate an OPD connected thereto, and each OPD is used to convert the sensed optical signal into an electrical signal.
  • the row scanning circuit 320 and the switching part 330 may be located at the edge position of the TFT substrate.
  • the row scanning circuit 320 and the switching part 330 may be located in a non-display area of the TFT substrate.
  • Row scan circuit 320 is equivalent to a shift register that is responsible for progressively scanning the sensors in sensor array 310 under the control of the clock signal.
  • the switching section 330 is a multiplexed device and can be implemented by a TFT.
  • the row scanning circuit 320 and the switching component 330 cooperate to select a sensor in a partial area of the sensor array 310 to output raw fingerprint data, that is, to output a fingerprint image signal of the finger on the screen.
  • the row scanning circuit 320 and the switching component 330 can be configured to select sensors in one of the four regions to output raw fingerprint data.
  • the input channel of the analog front end member 340 is coupled to the output channel of the switch member 330, and the output channel of the analog front end member 340 is coupled to the first control member 350.
  • the analog front end component 340 is configured to convert the received raw fingerprint data into digital fingerprint data and output it to the first control component 350.
  • the first control unit 350 is responsible for controlling the line scanning circuit 320 and the switching unit 330 to select the sensor unit in the sensor array, and controlling the analog front end unit 340 to convert the original fingerprint data, and then outputting the digital fingerprint data received from the analog front end unit 340 to The second control unit 360.
  • the first control component can be an FPGA or an ASIC or the like.
  • the second control component may perform fingerprint feature extraction on the digital fingerprint data, save the extracted fingerprint feature, or compare the extracted fingerprint feature with the pre-stored fingerprint feature. If the matching is successful, operations such as unlocking or paying may be performed.
  • the first control component and the second control component may be integrated, or the function of the first control component may be implemented by the second control component.
  • the fingerprint collection device shown in FIG. 3 is only an example, and the fingerprint collection device of the embodiment of the present application may further include other modules or units, or include modules similar to those of the modules in FIG. 3, or may not include All the modules in Figure 3.
  • the minimum unit of the fingerprint collection device in the embodiment of the present application may include only the row scanning circuit 320, the sensor array 310, the switch component 330, and the analog front end component 340; or the minimum unit of the fingerprint collection device in the embodiment of the present application may Only the row scanning circuit 320, the sensor array 310, the switching component 330, the analog front end component 340, and the first control component 350 are included.
  • FIG. 4 A more specific schematic structural diagram of the fingerprint collection device of the embodiment of the present application is shown in FIG. 4 .
  • the fingerprint collection device includes 2048 rows and 1024 columns of sensor units, and each sensor unit includes a TFT and an OPD.
  • the 1024 column sensor unit can be divided into four regions from left to right, namely A1, A2, A3 and A4, and each region includes 256 columns of sensor units.
  • the GOA as a line scan circuit includes 2048 output channels.
  • the 2048 output channels are connected to the 2048 row sensor units one by one, wherein each output channel of the GOA is connected to a corresponding row of sensor units.
  • the GOA is located on the left edge of the sensor array and is responsible for row selection of the sensor array. Each time the GOA inputs a clock signal, it strobes the next row of sensor units.
  • the switch component includes 1024 switches, one for each TFT.
  • the 1024 TFTs constituting the switching component are located at the bottom of the sensor array, and the 1024 TFTs are connected to the 1024 column sensor units one by one, and one TFT is connected to one column of sensor units.
  • the TFTs connected to the sensor array in the same area can be turned on by the same enable signal.
  • the switching TFTs connected to the sensor cells in the A1, A2, A3, and A4 regions can be gated by the S1, S2, S3, and S4 signals, respectively.
  • the FPGA when the FPGA sends a clock signal to the GOA and controls the GOA to output the line scan signal to the sensor array row by row, the S1 signal is input to the switch TFT corresponding to the A1 area. These switching TFTs are turned on to connect the sensor unit and the AFE in the A1 area.
  • the FPGA also sends an acquisition signal timing to the AFE to control the AFE to receive the raw fingerprint data output by the sensor array.
  • the AFE converts the raw fingerprint data generated by the sensor unit in the A1 area into digital fingerprint data and outputs it to the FPGA.
  • the FPGA as the first control component converts the digital fingerprint data from a low voltage differential signal (LVDS) interface format to a serial peripheral interface (SPI) format, and outputs it to the application as a second control component.
  • Processor application processor, AP.
  • the sensor array is divided into a plurality of groups according to the number of columns of the sensor array and the number of input ports of the AFE, and then the line scanning circuit and the switch component can be controlled to select a finger.
  • the sensor unit in the group corresponding to the area on the screen is in communication with the AFE, so that the fingerprint signal at any position on the full screen can be acquired by a small number of AFEs.
  • the fingerprint collection device can include a sensor array 510, a row scan circuit 520, a switch component 530, an analog front end component 540, a first control component 550, and a second control component 560.
  • the sensor array 510 may include a TFT substrate and an OPD disposed on the TFT substrate.
  • the TFT substrate includes M rows and N columns of TFTs, and the TFT substrates are provided with M rows and N columns of OPDs, and the M rows and N columns of OPDs are connected to the M rows and N columns of TFTs one by one.
  • Each TFT is used to gate an OPD connected thereto, and each OPD is used to convert the sensed optical signal into an electrical signal.
  • the row scanning circuit 520 and the switching part 530 may be located at the edge position of the TFT substrate.
  • the row scanning circuit 520 and the switching part 530 may be located in a non-display area of the TFT substrate.
  • Row scan circuit 520 is equivalent to a shift register that is responsible for progressively scanning the sensors in sensor array 510 under the control of the clock signal.
  • the switching section 530 is a multiplexed device and can be implemented by a TFT.
  • Row scan circuit 520 is coupled to the sensor array by switch component 530.
  • the row scanning circuit 520 and the switching component 530 cooperate to select a sensor unit in a partial area of the sensor array 510 to output raw fingerprint data, i.e., output a fingerprint image signal of the finger on the screen.
  • the row scanning circuit 520 and the switching component 530 can be configured to select sensor cells in one of the four regions to output raw fingerprint data.
  • the input channels of the analog front end component 540 are coupled to the data lines of the sensor array 510, wherein the data lines of the sensor cells in different regions of the sensor array multiplex the input channels of the analog front end components 540.
  • the output channel of the analog front end component 540 is coupled to the first control component 550.
  • the analog front end component 540 is configured to convert the received raw fingerprint data into digital fingerprint data and output it to the first control component 550.
  • the first control unit 550 is responsible for controlling the line scanning circuit 520 and the switching unit 530 to select the sensor unit in the sensor array, and controlling the analog front end unit 540 to convert the original fingerprint data, and then outputting the digital fingerprint data received from the analog front end unit 540 to the first Two control components 560.
  • the first control component can be an FPGA or an ASIC or the like.
  • the second control component may perform fingerprint feature extraction on the digital fingerprint data, save the extracted fingerprint feature, or compare the extracted fingerprint feature with the pre-stored fingerprint feature. If the matching is successful, operations such as unlocking or paying may be performed.
  • the first control component and the second control component may be integrated, or the function of the first control component may be implemented by a second control component.
  • the fingerprint collection device shown in FIG. 5 is only an example, and the fingerprint collection device of the embodiment of the present application may further include other modules or units, or include modules similar to those of the modules in FIG. 5, or may not include Figure 5 shows all the modules.
  • the minimum unit of the fingerprint collection device in the embodiment of the present application may include only the row scanning circuit 520, the sensor array 510, the switch component 530, and the analog front end component 540; or the minimum unit of the fingerprint collection device in the embodiment of the present application may Only the row scanning circuit 520, the sensor array 510, the switching component 530, the analog front end component 540, and the first control component 550 are included.
  • FIG. 6 A more specific schematic structural diagram of the fingerprint collection device of the embodiment of the present application is shown in FIG. 6.
  • the fingerprint collection device includes a sensor array composed of 2048 rows and 1024 columns of sensor units, each of which includes a TFT and an OPD.
  • the 1024 column sensor units can be divided into four regions from left to right, respectively, A1, A2, A3, and A4, each of which The area includes 256 columns of sensor units.
  • the switch component includes 2048 rows of switches. These 2048 line switches are divided into 4 groups of switches. The four sets of switches correspond to the four areas one by one, and the 2048 line switches are in one-to-one correspondence with the 2048 line sensor units.
  • the GOA as a line scan circuit includes 2048 output channels.
  • the 2048 output channels are connected to the 2048 row switching TFTs one by one, wherein each output channel of the GOA is connected to a corresponding row of switching TFTs.
  • the GOA is located on the left edge of the sensor array and is responsible for row selection of the sensor array. Each time the GOA inputs a clock signal, the next row of sensor units is strobed through the switching TFT.
  • the TFTs constituting the switching components are located in the sensor array and connect the GOA and the sensor unit.
  • Each row of switching TFTs includes four switching TFTs.
  • the four switching TFTs are respectively connected to the sensor units in the four regions.
  • the switching TFTs connected to the sensor arrays in the same area can be turned on by the same signal.
  • the switching TFTs connected to the sensors in the A1, A2, A3, and A4 regions can be gated by the S1, S2, S3, and S4 signals, respectively.
  • the FPGA sends a clock signal to the GOA, and when the GOA outputs the line scan signal line by line, the S1 signal is input to the switching TFT corresponding to the A1 area. These switching TFTs are turned on to connect the sensor unit in the A1 area with the GOA so that the sensor unit in the A1 area receives the line scan signal.
  • the FPGA also sends an acquisition timing signal to the AFE to control the AFE to receive the raw fingerprint data output by the sensor array.
  • the AFE converts the raw fingerprint data output by the sensor unit in the A1 area into digital fingerprint data, and outputs it to the FPGA.
  • the FPGA as the first control component converts the digital fingerprint data from the LVDS interface format to the SPI format and outputs it to the AP as the second control unit.
  • the number of rows and columns of the sensor array in FIG. 6, the number of switching TFTs, the number of interfaces of the AEF, and the like are all examples.
  • the number of sensor arrays and other AEFs of the number of input ports how to implement multiplexing of AEFs by the sensor unit for fingerprint collection, refer to the above content, and details are not described herein.
  • FIG. 7 shows the steps or operations of the fingerprint collection method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the operations in FIG. Moreover, the various steps in FIG. 7 may be performed in a different order than that presented in FIG. 7, and it is possible that not all operations in FIG. 7 are to be performed.
  • the fingerprint collection method shown in FIG. 7 can be performed by the fingerprint collection device shown in any of FIGS. 3 to 6.
  • the second control component acquires location information of a finger touch on the screen. This step can refer to the prior art, and details are not described herein again.
  • the second control unit controls the screen to light the area corresponding to the touched position according to the position information touched by the finger.
  • the light from these lit screen pixels will illuminate the finger.
  • the fingerprint on your finger reflects the light.
  • the light reflected by the fingerprint of the finger can be illuminated onto the sensor array through the gap between the pixels of the screen.
  • the sensor unit in the sensor array generates and stores an analog electrical signal based on the light reflected by the fingerprint, which is the original fingerprint data.
  • the second control component sends the location information of the finger to the first control component in the information collection device.
  • the first control component determines, according to the position information of the finger, the original fingerprint data generated by the sensor unit in the area in the sensor array, and further determines which switches in the group should be turned on and which switches in the group are turned off. . At the same time, the first control component further determines a start line and an end line in the sensor array based on the position information of the finger.
  • the group that should be turned on in the plurality of sets of switches can become the target switch group.
  • the first control component sends a clock signal to the row scanning circuit, so that the row scanning circuit outputs the row scanning signal to the sensor array row by row.
  • the first control component sends an enable signal to all the switches, wherein the enable signal sent to the target switch group is an enable signal of the turn-on switch, and the enable signal sent to the switch in the other group is the enable switch of the turn-off switch. signal.
  • the first control component can send the same enable signal to the switches in the same group.
  • the first control unit starts the line scan signal outputting the line scan signal to the start line, and sends the acquisition timing signal to the AFE, so that the AFE starts to receive the original fingerprint data generated by the sensor unit.
  • the first control unit stops outputting the acquisition timing signal to the AFE, so that the AFE stops receiving the original fingerprint data generated by the sensor array.
  • the AFE After receiving the original fingerprint data, the AFE converts the original fingerprint data into digital fingerprint data and sends it to the first control component.
  • the first control component converts the digital fingerprint data from the LVDS receive format to the SPI interface format and sends it to the second control component.
  • the first control unit determines whether S750 has been performed for all areas corresponding to the finger. If yes, execute S770, otherwise execute S750 for the next area where S750 has not been executed.
  • the application processor in the embodiment of the present application may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Device transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Input (AREA)

Abstract

一种指纹采集方法和相关装置。在该指纹采集方法和相关装置中，根据模拟前端部件的输入端口的数量和传感器阵列的列数，将传感器阵列按列划分为多个区域，不同区域中的传感器单元通过开关复用模拟前端部件的输入通道。这样，行扫描电路扫描传感器阵列中的行扫描线时，可以控制开关，分时向模拟前端部件输出不同区域中的传感器单元采集的原始指纹数据，从而可以减少模拟前端部件的输入通道的需求量，进而可以减小指纹采集装置的尺寸。

Description

指纹采集装置和指纹采集方法 技术领域
本申请涉及指纹识别领域，并且更具体地，涉及指纹采集装置和指纹采集方法。
背景技术
在手机中实现屏下指纹识别的工作原理为：手机屏幕点亮、且有手指置于手机屏幕上时，该手指会被照亮，该手指的指纹反射的光线经过屏幕像素之间的透光空隙后，在微透镜或小孔的汇聚作用下，在屏幕下方的传感器阵列上投影成像，然后，该传感器将投影在其上的光信号转换为电信号，根据该电信号可以获取到指纹图像。
基于上述原理，如何采集指纹图像，是丞待解决的技术问题。
发明内容
本申请提供指纹采集方法和相关装置，在采集指纹的图像信息的同时，还有助于减少指纹采集装置的尺寸，便于指纹采集装置集成到电子设备中。
第一方面，本申请提供了一种指纹采集装置，该指纹采集装置包括传感器阵列、行扫描电路、开关部件和模拟前端部件(analog front end，AFE)。
传感器阵列包括M行N列传感器单元，模拟前端部件包括L个输入通道，M和N为大于1的正整数，L为小于N的正整数。
以列为单位，这N列传感器单元划分为多组传感器单元，这多组传感器单元中的每组传感器单元包括的传感器单元的列数小于或等于L。
这多组传感器单元的数据线通过开关部件分时复用模拟前端部件的所述L个输入通道。
行扫描电路用于逐行输出传感器阵列的行扫描信号。
传感器阵列中的传感器单元用于：生成原始指纹数据，接收行扫描信号时从数据线输出原始指纹数据。
开关部件用于：选择将这多组传感器单元中的任意一组传感器单元中的原始指纹数据输出到模拟前端部件的L个输入通道。
模拟前端部件用于将所述任意一组传感器单元输出的原始指纹数据转换为数字指纹数据。
也就是说，传感器阵列中的传感器单元用于生成和保存指纹的原始图像数据(模拟电信号)。行扫描电路负责传感器阵列中的行扫描线的扫描(即行扫描电路相当于一个移位寄存器，在时钟信号的控制下对传感器阵列进行逐行扫描)。开关部件为多路信号复用器件。行扫描电路与开关部件配合起来用于从传感器阵列中选择部分列中的传感器单元输出指纹的图像数据，即输出手指的指纹图像数据。模拟前端部件用于将传感器阵列生成和保存的模拟的电信号转换为数字信号，从而得到指纹的数字图像数据。
其中，行扫描电路和开关部件可以位于指纹采集装置的边缘位置，例如，可以位置指纹采集装置的非显示区。
其中，行扫描电路可以包括栅极控制电路(gate on array，GOA)，传感器阵列可以包括薄膜晶体管(thin film transistor，TFT)基板以及设置于TFT基板上的有机光敏二极管(organic photodiode，OPD)，开关部件可以为TFT。
由于开关部件为多路信号复用器件，可以使得多列传感器单元的数据线可以复用模拟前端部件的同一个输入通道，从而可以减少模拟前端部件的输入通道的数量，进而可以减小指纹采集装置的尺寸。
在一种可能的设计中，开关部件包括多组开关，这多组开关与上述多组传感器单元一一对应，这多组传感器单元中的每组传感器单元的数据线通过这多组开关中对应的一组开关与模拟前端部件的L个输入通道相连。
指纹采集装置还包括第一控制部件，第一控制部件用于向行扫描电路发送时钟信号。
行扫描电路具体用于根据时钟信号逐行输出传感器阵列的行扫描信号。
第一控制部件还用于向这多组开关发送使能信号，该使能信号用于导通这多组开关中的目标组开关和关断该多组开关中的其他组开关。
开关部件用于：选择将目标组开关对应的目标组传感器单元中的原始指纹数据输出到L个输入通道。
例如，这多组开关中，每组开关包括L个开关；这多组传感器单元中，每组传感器单元包括L列传感器单元；每组传感器单元中的L列传感器单元的数据线通过对应的一组开关中的L个开关，与前端模拟部件的L个输入通道一一相连。
可选地，第一控制部件向这多组开关发送的使能信号中，同一组中的开关的使能信号可以是同一个。
例如，可以将传感器阵列按列划分为多个区域，每个区域包括多列传感器单元时，每个区域中，不同的列中的传感器单元分别通过开关与模拟前端部件的不同输入通道相连，但是，不同区域中的列中的传感器单元通过开关与模拟前端部件的同一个输入通道相连。也就是说，可以通过控制与模拟前端部件的同一个输入通道相连的多个开关中的一个开关导通，而其他开关关断来实现与导通的开关相连的传感器单元与模拟前端部件的输入通道之间的信号传输。同一个区域内的开关可以使用同一个信号来导通或关断。
例如，传感器阵列包括2048行和1024列传感器单元、模拟前端部件仅有256个输入通道时，可以将1024列传感器单元划分为4个区域，从第一列开始，每256列为一个区域。每个区域中的256列传感器单元为一组传感器单元，总共有4组传感器单元。开关部件包括4组开关，每组开关包括256个开关。这四组开关与这四组传感器单元一一对应。
其中，每组传感器单元中的256列传感器单元的数据线通过对应的256个开关与模拟前端部件的256个输入通道一一相连。这样，4个区域中的1024列传感器单元复用模拟前端部件的256个输入通道。其中，每4列传感器单元复用模拟前端部件的一个输入通道。
在一种可能的设计中，行扫描电路包括M个输出通道，开关部件包括多组开关，这多组开关与上述多组传感器单元一一对应，每组开关包括M个开关，每组传感器单元的扫描线均通过这多组开关中对应的一组开关与行扫描电路的M个输出通道相连，每组传感器单元的数据线均与模拟前端部件的L个输入通道相连。
指纹采集装置还包括第一控制部件，第一控制部件用于向行扫描电路发送时钟信号。
行扫描电路具体用于根据时钟信号逐行输出传感器阵列的行扫描信号。
第一控制部件还用于向这多组开关发送使能信号，该使能信号用于导通这多组开关中的目标组开关和关断该多组开关中的其他组开关。
开关部件用于：选择将目标组开关对应的目标组传感器中的原始指纹数据输出到L个输入通道。
例如，可以将传感器阵列按列划分为多个区域，每个区域包括多列传感器单元时，每个区域中不同列的传感器单元的数据线与模拟前端部件的不同输入通道相连，但是，不同区域中的列中的传感器单元的数据线与模拟前端部件的同一个输入通道相连。每行传感器单元中位于同一个区域中的传感器单元通过一个开关与行扫描电路的一个输出通道相连。
例如，传感器阵列包括2048行和1024列传感器单元、模拟前端部件仅有256个输入通道时，可以将这1024列传感器单元划分为4个区域。其中，从第一列开始，每256列为一个区域。行扫描电路包括2048个输出通道。每个区域中的256列传感器单元为一组传感器单元，总共有4组传感器单元。
开关部件包括4组开关，每组开关包括2048个开关，每组开关中的2048个开关分别与行扫描电路的2048个输出通道一一相连。这4组开关与4组传感器单元一一对应。
每组传感器单元中的256列传感器单元的数据线均与模拟前端部件的256个输入通道一一相连。这样，4个区域中的1024列传感器单元复用模拟前端部件的256个输入通道。其中，每4列传感器单元复用模拟前端部件的一个输入通道。
上述各个例子中，若手指落在了这四个区域中的某个区域中，就可以导通与该区域中的传感器单元相连的那一组开关，而关断与其他区域中的传感器单元相连的开关，从而可以使得仅有该区域中的传感器单元会向模拟前端部件的输入通道输出原始指纹数据。当手指落在另一个区域中时，可以导通与该另一个区域中传感器单元相连的那一组开关，而关断与其他区域中的传感器单元相连的开关，从而可以使得仅有该另一个区域中的传感器单元会向模拟前端部件的输入通道输出原始指纹数据。同一个区域中的开关可以使用同一个使能信号来导通或关断。
当然，手指可以扩在多个区域中，例如可以落在两个区域中。这种情况下，可以分多次对这多个区域中的传感器单元对应的开关进行导通和关断控制。从而可以获取到这多个区域中的传感器单元生成的原始指纹数据。
在一种可能的设计中，第一控制部件还用于在向行扫描电路输出时钟信号和向开关部件输出使能信号时，向模拟前端部件输出采集时序信号，采集时序信号用于控制模拟前端部件接收传感器阵列输出的原始指纹数据。
其中，该第一控制部件可以是该指纹采集装置的专用芯片，例如可以是现场可编程门阵列(field programmable gate array，FPGA)或专用集成电路(application specific integrated circuit，ASIC)。
其中，与同一个区域内的传感器单元相连的开关可以通过同一个使能信号来导通或关断。
在一种可能的设计中，该指纹采集装置还包括屏幕和第二控制部件。
第二控制部件用于确定手指在屏幕上的位置信息，并向第一控制部件发送手指的位置 信息。
第一控制部件具体用于：根据手指的位置信息确定M行传感器单元中的起始行和结束行；根据手指的位置信息从多组传感器单元中确定出目标组传感器单元；在行扫描电路向起始行输出行扫描信号时，向模拟前端部件输出采集时序信号，直到行扫描电路向结束行输出行扫描信号，停止向模拟前端部件输出采集时序信号。其中，目标组开关与目标组传感器单元对应，起始行与结束行之间以及目标组传感器单元中包括传感器阵列中位于手指的位置信息对应的区域内的传感器单元。
可选地，该屏幕可以是光学液晶显示器(optics liquid crystal display，LCD)。
可选地，起始行可以是M行中的第一行。
可选地，第一控制部件可以集成在第二控制部件中，或者第一控制部件为第二控制部件。
可选地，第二控制部件可以是应用该指纹采集装置的电子设备中的应用处理器。
在一种可能的设计中，手指的位置信息对应的区域包括以所述位置信息指示的位置为中心，尺寸为10毫米*10毫米的区域。
在一种可能的设计中，每个开关包括一个薄膜晶体管。
在一种可能的设计中，传感器阵列中的每个传感器单元包括一个薄膜晶体管和一个有机光敏二极管，有机光敏二极管用于生成和保存原始指纹数据，该薄膜晶体管用于：接收行扫描信号时输出有机光敏二极管生成的原始指纹数据。
第二方面，本申请提供了一种指纹采集方法，该指纹采集方法由第一方面中的指纹采集装置执行。
在一种实现方式中，该指纹采集方法包括：
行扫描电路逐行输出传感器阵列的行扫描信号；
传感器阵列中的传感器单元生成原始指纹数据，接收行扫描信号时从数据线输出原始指纹数据；
开关部件选择将多组传感器单元中的任意一组传感器单元中的原始指纹数据输出到模拟前端部件的L个输入通道；
模拟前端部件将所述任意一组传感器单元输出的原始指纹数据转换为数字指纹数据。
在一种可能的实现方式中，该指纹采集方法还包括：
第一控制部件向行扫描电路发送时钟信号；
第一控制部件向多组开关发送使能信号，使能信号用于导通所述多组开关中的目标组开关和关断所述多组开关中的其他组开关。
其中，行扫描电路逐行输出传感器阵列的行扫描信号，包括：行扫描电路根据时钟信号逐行输出传感器阵列的行扫描信号。
开关部件选择将多组传感器中的任意一组传感器中的原始指纹数据输出到模拟前端部件的L个输入通道，包括：开关部件根据使能信号，选择将目标组开关对应的目标组传感器单元中的原始指纹数据输出到所述L个输入通道。
在一种可能的设计中，该指纹采集装置还包括：
第一控制部件在输出时钟信号和使能信号时，向模拟前端部件输出采集时序信号，采集时序信号用于控制模拟前端部件接收传感器阵列输出的原始指纹数据。
其中，模拟前端部件将所述任意一组传感器单元输出的原始指纹数据转换为数字指纹数据，包括：
模拟前端部件接收到采集时序信号时，将所述任意一组传感器单元输出的原始指纹数据转换为数字指纹数据。
在一种可能的设计中，该指纹采集方法还包括；第二控制部件确定手指在屏幕上的位置信息，并向第一控制部件发送所述位置信息。
其中，第一控制部件向行扫描电路输出时钟信号，向开关部件输出使能信号和向模拟前端部件输出采集时序信号，包括：
第一控制部件根据所述位置信息确定M行传感器单元中的起始行和结束行；
根据所述位置信息从多组传感器单元中确定目标组传感器单元；
在行扫描电路向起始行输出行扫描信号时向模拟前端部件输出采集时序信号，直到行扫描电路向所述结束行输出行扫描信号，停止向模拟前端部件输出采集时序信号；
将多组开关中与目标组传感器单元对应的一组开关确定为目标组开关；
向目标组开关发送导通目标组开关的使能信号，以及向多组开关中其他组开关发送关断所述其他组开关的使能信号。
其中，起始行与结束行之间以及目标组传感器单元中包括传感器阵列中位于所述位置信息对应的区域内的传感器。
在一种可能的设计中，该指纹采集装置包括：第二控制部件向屏幕发送所述位置信息；屏幕根据所述位置信息点亮屏幕上位于所述位置信息对应的区域内的像素。
在一种可能的设计中，所述位置信息对应的区域包括以所述位置信息指示的位置为中心，尺寸为10毫米*10毫米的区域。
在一种可能的设计中，每个开关包括一个薄膜晶体管。
在一种可能的设计中，每个传感器单元包括一个薄膜晶体管和一个有机光敏二极管，有机光敏二极管用于生成原始指纹数据，该薄膜晶体管用于接收行扫描信号时输出有机光敏二极管生成的原始指纹数据。
上述指纹采集装置和指纹采集方法可以用于全面屏终端设备。
第三方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储用于指纹采集装置执行的程序代码，所述程序代码包括用于执行第二方面中的指纹采集方法的指令。
第四方面，本申请提供了一种包含指令的计算机程序产品。当该计算机程序产品在指纹采集装置上运行时，使得指纹采集装置执行第二方面中的指纹采集方法。
第五方面，本申请提供了一种系统芯片，该系统芯片包括输入输出接口和至少一个处理器，该至少一个处理器用于执行指令，调用输入输出接口，以进行第二方面中的指纹采集方法的操作。
第六方面，本申请提供了一种显示屏，包括第一方面及第一方面各种实现方式提供的指纹采集装置，还包括显示组件，显示组件位于指纹采集装置上方，显示组件即用于进行图像显示的组件(如基于OLED、TFT、LCD、LED的各种显示组件)。
第七方面，本申请提供了一种终端，包括第一方面及第一方面各种实现方式提供的指纹采集装置，还包括处理器(如海思麒麟系列的处理器或者高通骁龙系列的处理器)、存 储器、外壳、电池等终端所需的各种器件。其中，处理器可用于接收指纹采集装置的数据并进行处理。
附图说明
图1是本申请的指纹识别方法的原理示意图；
图2是本申请实施例的指纹识别方法的应用场景的示意性图；
图3是本申请一个实施例的指纹采集装置的示意性结构图；
图4是本申请另一个实施例的指纹采集装置的示意性结构图；
图5是本申请另一个实施例的指纹采集装置的示意性结构图；
图6是本申请另一个实施例的指纹采集装置的示意性结构图；
图7是本申请另一个实施例的指纹识别方法的示意性流程图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
如图1所示，屏下指纹识别的流程包括：显示屏120发出的光经照射到手指110；手指110上的指纹反射光；手指110上的指纹反射的光125穿过显示屏120上透光的缝隙，并在透镜130的汇聚作用下，投影在传感器阵列140上；传感器阵列140的传感器单元141将投射到自己上面的光信号转换为电信号，该电信号即为指纹的原始数据，也可以称为原始指纹数据。
由于传感器单元141转换的电信号是模拟的，因此，还需要将该模拟的电信号转换为数字信号，从而采集到指纹的图像信息。
若显示屏120的显示区域较大，例如，显示屏120为全面屏时，则要想实现全屏屏下指纹采集，传感器阵列140会产生数量较多的原始指纹数据，从而需要较多的模数转换部件来对原始指纹数据进行模数转换。但是，目前的模数转换部件的尺寸都相对较大，较多数量的模数转换部件会增大进行指纹采集装置的尺寸。
因此，本申请提出了一种指纹采集装置和一种指纹采集方法，通过多个传感器单元输出原始指纹数据的数据线复用模数转换部件的同一个输入通道，即多个传感器单元输出的原始指纹数据复用同一个模数转换部件的方式，可以减少模数转换部件的数量，进而可以减小进行指纹采集的装置的尺寸。
图2是本申请的指纹采集装置和指纹采集方法的应用场景的示意图。图2与图1中相同的附图标记标识相同或者相似的含义，此处不再赘述。下面只介绍图2中与图1中不相同的内容。
触摸屏105位于显示屏120之上。当然，这只是一种示例，触摸屏105也可以位于显示屏120之下。触摸屏105与显示屏120可以称为屏幕。
触摸屏105用于检测用户手指在屏幕上的触摸信息，并将触摸信息传输给处理器150。
处理器150根据触摸屏105检测到的触摸信息，可以确定出用户手指在屏幕上的位置信息。
另外，传感器阵列140生成的原始指纹数据转换为数字类型的指纹数据后，可以发送到处理器150；处理器150记录该数字指纹数据或者将该数字指纹数据与处理器150中预 先存储的数字指纹数据进行匹配，若匹配成功，可以执行相应的操作，如解锁屏幕或支付等。
本申请一个实施例的指纹采集装置的示意性结构图如图3所示。该指纹采集装置可以包括传感器阵列310、行扫描电路320、开关部件330、模拟前端部件340、第一控制部件350和第二控制部件360。
其中，传感器阵列310可以包括TFT基板以及在TFT基板上设置的OPD。例如，TFT基板上包括M行N列的TFT，该TFT基板上设置M行N列的OPD，M行N列的OPD与M行N列的TFT一一相连。每个TFT用于选通与之相连的OPD，每个OPD用于将感应到的光信号转换为电信号。
行扫描电路320和开关部件330可以位于TFT基板的边沿位置。例如，行扫描电路320和开关部件330可以位于TFT基板的非显示区。
行扫描电路320相当于一个移位寄存器，在时钟信号的控制下，负责逐行扫描传感器阵列310中的传感器。
开关部件330为多路复用器件，可以用TFT来实现。
行扫描电路320和开关部件330配合起来可以选择传感器阵列310的部分区域中的传感器输出原始指纹数据，即输出手指在屏幕上的指纹图像信号。
例如，将传感器阵列310分为A1、A2、A3和A4共四个区域时，行扫描电路320和开关部件330可以配置起来选择这四个区域中的一个区域中的传感器输出原始指纹数据。
模拟前端部件340的输入通道与开关部件330的输出通道相连，模拟前端部件340的输出通道与第一控制部件350相连。模拟前端部件340用于将接收到的原始指纹数据转换为数字指纹数据，并输出给第一控制部件350。
第一控制部件350负责控制行扫描电路320与开关部件330选择传感器阵列中的传感器单元，并控制模拟前端部件340对原始指纹数据进行转换，然后将从模拟前端部件340接收的数字指纹数据输出给第二控制部件360。第一控制部件可以是FPGA或ASIC等。
第二控制部件可以对数字指纹数据进行指纹特征提取，将提取的指纹特征保存下来，或将提取的指纹特征与预存的指纹特征进行对比，如果匹配成功，则可以进行解锁或支付等操作。
第一控制部件与第二控制部件可以集成在一起，或者，第一控制部件的功能可以由第二控制部件来实现。
应理解，图3示出的指纹采集装置仅是示例，本申请实施例的指纹采集装置还可包括其他模块或单元，或者包括与图3中的各个模块的功能相似的模块，或者并非要包括图3中所有模块。
例如，本申请实施例中的指纹采集装置的最小单位可以仅包括行扫描电路320、传感器阵列310、开关部件330和模拟前端部件340；或者，本申请实施例中的指纹采集装置的最小单位可以仅包括行扫描电路320、传感器阵列310、开关部件330、模拟前端部件340和第一控制部件350。
本申请实施例的指纹采集装置的一种较为具体的示意性结构图如图4所示。
如图4所示，该指纹采集装置包括2048行1024列传感器单元，每个传感器单元包括一个TFT和一个OPD。
其中，可以将这1024列传感器单元从左到右分为4个区域，分别为A1、A2、A3和A4，每个区域包括256列传感器单元。
作为行扫描电路的GOA包括2048个输出通道。这2048个输出通道与2048行传感器单元一一连接，其中，GOA的每个输出通道与对应的一行传感器单元全部相连。
GOA位于传感器阵列的左侧边缘，负责传感器阵列的行选择。GOA每输入一个时钟信号，则选通下一行传感器单元。
开关部件包括1024个开关，每个开关为一个TFT。
构成开关部件的1024个TFT位于传感器阵列的底部，这1024个TFT与1024列传感器单元一一相连，其中一个TFT与一列传感器单元相连。开关部件中，与同一个区域中的传感器阵列相连的TFT可以由同一个使能信号来导通。例如，与A1、A2、A3和A4区域中的传感器单元相连的开关TFT分别可以通过S1、S2、S3和S4信号来选通。
例如，FPGA向GOA发送时钟信号，控制GOA向传感器阵列逐行输出行扫描信号时，向A1区域对应的开关TFT输入S1信号。这些开关TFT会导通，从而连通A1区域内的传感器单元与AFE。FPGA还向AFE发送采集信号时序，控制AFE接收传感器阵列输出的原始指纹数据。AFE将A1区域中的传感器单元生成的原始指纹数据转换为数字指纹数据，并输出给FPGA。
作为第一控制部件的FPGA将数字指纹数据从低压差分信号(low voltage differential signal，LVDS)接口格式转换为串行外设接口(serial peripheral interface，SPI)格式，输出给作为第二控制部件的应用处理器(application processor，AP)。
应理解，图4中的传感器阵列的行数和列数、开关部件TFT的数量、AEF的接口数量等均是示例。对于其他数量的传感器阵列和其他输入端口数量的AEF，如何实现传感器单元对AEF的复用以进行指纹的采集，可以参考上述内容，此处不再赘述。
图3和图4所示的指纹采集装置中，根据传感器阵列的列数和AFE的输入端口的数量，将传感器阵列按列划分为多个组，然后可以控制行扫描电路和开关部件选择手指在屏幕上的区域对应的那个组中的传感器单元与AFE连通，从而可以通过较少数量的AFE采集全面屏上任意位置的指纹信号。
本申请另一个实施例的指纹采集装置的示意性结构图如图5所示。该指纹采集装置可以包括传感器阵列510、行扫描电路520、开关部件530、模拟前端部件540、第一控制部件550和第二控制部件560。
其中，传感器阵列510可以包括TFT基板以及在TFT基板上设置的OPD。例如，TFT基板上包括M行N列的TFT，该TFT基板上设置M行N列的OPD，M行N列的OPD与M行N列的TFT一一相连。每个TFT用于选通与之相连的OPD，每个OPD用于将感应到的光信号转换为电信号。
行扫描电路520和开关部件530可以位于TFT基板的边沿位置。例如，行扫描电路520和开关部件530可以位于TFT基板的非显示区。
行扫描电路520相当于一个移位寄存器，在时钟信号的控制下，负责逐行扫描传感器阵列510中的传感器。开关部件530为多路复用器件，可以用TFT来实现。
行扫描电路520通过开关部件530与传感器阵列相连。
行扫描电路520和开关部件530配合起来可以选择传感器阵列510的部分区域中的传 感器单元输出原始指纹数据，即输出手指在屏幕上的指纹图像信号。
例如，将传感器阵列510分为A1、A2、A3和A4共四个区域时，行扫描电路520和开关部件530可以配置起来选择这四个区域中的一个区域中的传感器单元输出原始指纹数据。
模拟前端部件540的输入通道与传感器阵列510的数据线相连，其中，传感器阵列中的不同区域中的传感器单元的数据线复用模拟前端部件540的输入通道。模拟前端部件540的输出通道与第一控制部件550相连。模拟前端部件540用于将接收到的原始指纹数据转换为数字指纹数据，并输出给第一控制部件550。
第一控制部件550负责控制行扫描电路520与开关部件530选择传感器阵列中传感器单元，并控制模拟前端部件540对原始指纹数据进行转换，然后将从模拟前端部件540接收的数字指纹数据输出给第二控制部件560。第一控制部件可以是FPGA或ASIC等。
第二控制部件可以对数字指纹数据进行指纹特征提取，将提取的指纹特征保存下来，或将提取的指纹特征与预存的指纹特征进行对比，如果匹配成功，则可以进行解锁或支付等操作。
第一控制部件与第二控制部件可以集成在一起，或者，第一控制部件的功能可以有第二控制部件来实现。
应理解，图5示出的指纹采集装置仅是示例，本申请实施例的指纹采集装置还可包括其他模块或单元，或者包括与图5中的各个模块的功能相似的模块，或者并非要包括图5中所有模块。
例如，本申请实施例中的指纹采集装置的最小单位可以仅包括行扫描电路520、传感器阵列510、开关部件530和模拟前端部件540；或者，本申请实施例中的指纹采集装置的最小单位可以仅包括行扫描电路520、传感器阵列510、开关部件530、模拟前端部件540和第一控制部件550。
本申请实施例的指纹采集装置的一种较为具体的示意性结构图如图6所示。
如图6所示，该指纹采集装置包括由2048行1024列传感器单元组成的传感器阵列，每个传感器单元包括一个TFT和一个OPD。
其中，由于传感器阵列包括1024列传感器单元，而AFE仅包括256个输入端口，因此可以将这1024列传感器单元从左到右分为4个区域，分别为A1、A2、A3和A4，每个区域包括256列传感器单元。
开关部件包括2048行开关。这2048行开关分为4组开关。这四组开关与4个区域一一对应，这2048行开关与2048行传感器单元一一对应。
作为行扫描电路的GOA包括2048个输出通道。这2048个输出通道与2048行开关TFT一一相连，其中，GOA的每个输出通道与对应的一行开关TFT全部相连。
GOA位于传感器阵列的左侧边缘，负责传感器阵列的行选择。GOA每输入一个时钟信号，则通过开关TFT选通下一行传感器单元。
构成开关部件的TFT位于传感器阵列之中，连接GOA和传感器单元。每行开关TFT包括4个开关TFT。这四个开关TFT分别与四个区域中的传感器单元相连。
与同一个区域中的传感器阵列相连的开关TFT可以由同一个信号来导通。例如，与A1、A2、A3和A4区域中的传感器相连的开关TFT分别可以通过S1、S2、S3和S4信号 来选通。
例如，FPGA向GOA发送时钟信号，控制GOA逐行输出行扫描信号时，向A1区域对应的开关TFT输入S1信号。这些开关TFT会导通，从而连通A1区域内的传感器单元与GOA，使得A1区域内的传感器单元接收到行扫描信号。FPGA还向AFE发送采集时序信号，控制AFE接收传感器阵列输出的原始指纹数据。AFE将A1区域中传感器单元输出的原始指纹数据转换为数字指纹数据，并输出给FPGA。
作为第一控制部件的FPGA将数字指纹数据从LVDS接口格式转换为SPI格式，输出给作为第二控制部件的AP。
应理解，图6中的传感器阵列的行数和列数、开关TFT的数量、AEF的接口数量等均是示例。对于其他数量的传感器阵列和其他输入端口数量的AEF，如何实现传感器单元对AEF的复用以进行指纹的采集，可以参考上述内容，此处不再赘述。
本申请一个实施例的指纹采集方法的示意性流程图如图7所示。应理解，图7示出了该指纹采集方法的步骤或操作，但这些步骤或操作仅是示例，本申请实施例还可以执行其他操作或者图7中的各个操作的变形。此外，图7中的各个步骤可以按照与图7呈现的不同的顺序来执行，并且有可能并非要执行图7中的全部操作。
图7所示的指纹采集方法可以由图3至图6中任意一个所示的指纹采集装置来执行。
S710，第二控制部件获取手指在屏幕上触摸的位置信息。该步骤可以参考现有技术，此处不再赘述。
S720，第二控制部件根据手指触摸的位置信息控制屏幕点亮与触摸的位置对应的区域。
此时，这些点亮的屏幕像素发出的光会照射到手指上。手指上的指纹会反射这些光。手指的指纹反射的光可以透过屏幕像素之间的缝隙照到传感器阵列上。传感器阵列中的传感器单元会根据指纹反射的光生成和保存模拟的电信号，该电信号即为原始指纹数据。
S730，第二控制部件将手指的位置信息发送给信息采集装置中的第一控制部件。
S740，第一控制部件根据手指的位置信息，确定应输出传感器阵列中那个区域内的传感器单元生成的原始指纹数据，进而可以确定出应导通那个组中的开关和关断哪些组中的开关。同时，第一控制部件还根据手指的位置信息确定传感器阵列中的起始行和结束行。
多组开关中应导通的那个组可以成为目标开关组。
S750，第一控制部件向行扫描电路发送时钟信号，使得行扫描电路逐行向传感器阵列输出行扫描信号。
第一控制部件向所有开关发送使能信号，其中，向目标开关组发送的使能信号为导通开关的使能信号，向其他组中的开关发送的使能信号为关断开关的使能信号。其中，第一控制部件可以向同一个组中的开关发送同一个使能信号。
并且，第一控制部件在行扫描电路向起始行输出行扫描信号开始，向AFE发送采集时序信号，使得AFE开始接收传感器单元生成的原始指纹数据。直到行扫描电路向结束行输出行扫描信号，第一控制部件停止向AFE输出采集时序信号，使得AFE停止接收传感器阵列生成的原始指纹数据。
AFE接收到原始指纹数据后，将原始指纹数据转换为数字指纹数据，并发送给第一控制部件。
第一控制部件将数字指纹数据从LVDS接收格式转换为SPI接口格式，并发送给第二控制部件。
S760，第一控制部件判断是否已针对手指对应的所有区域执行S750。若是，则执行S770，否则针对下一个未执行过S750的区域执行S750.
S770，原始指纹数据采集完成。
本申请实施例中的应用处理器可以是中央处理器(CPU)，通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)，现场可编程门阵列(FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种指纹采集装置，其特征在于，包括：传感器阵列、模拟前端部件、行扫描电路和开关部件；
    所述传感器阵列包括M行N列传感器单元，所述模拟前端部件包括L个输入通道，M和N为大于1的正整数，L为小于N的正整数；
    以列为单位，所述N列传感器单元划分为多组传感器单元，所述多组传感器单元中的每组传感器单元包括的传感器单元的列数小于或等于L；
    所述多组传感器单元的数据线通过所述开关部件分时复用所述模拟前端部件的所述L个输入通道；
    所述行扫描电路用于逐行输出所述传感器阵列的行扫描信号；
    所述传感器阵列中的传感器单元用于：生成原始指纹数据，接收所述行扫描信号时从数据线输出所述原始指纹数据；
    所述开关部件用于：选择将所述多组传感器单元中的任意一组传感器单元中的所述原始指纹数据输出到所述L个输入通道；
    所述模拟前端部件用于将所述任意一组传感器单元输出的所述原始指纹数据转换为数字指纹数据。
  2. 根据权利要求1所述的指纹采集装置，其特征在于，所述开关部件包括多组开关，所述多组开关与所述多组传感器单元一一对应，每组开关包括L个开关，所述多组传感器单元中的每组传感器单元包括L列传感器单元；
    所述多组传感器单元中的每组传感器单元包括的L列传感器单元的数据线通过所述多组开关中对应的一组开关包括的L个开关与所述模拟前端部件的所述L个输入通道一一相连；
    所述指纹采集装置还包括第一控制部件，所述第一控制部件用于向所述行扫描电路发送时钟信号；
    所述行扫描电路具体用于根据所述时钟信号逐行输出所述传感器阵列的行扫描信号；
    所述第一控制部件还用于向所述多组开关发送使能信号，所述使能信号用于导通所述多组开关中的目标组开关和关断所述多组开关中的其他组开关；
    所述开关部件用于：选择将所述目标组开关对应的目标组传感器单元中的所述原始指纹数据输出到所述L个输入通道。
  3. 根据权利要求2所述的指纹采集装置，其特征在于，所述第一控制部件还用于在输出所述时钟信号和所述使能信号时，向所述模拟前端部件输出采集时序信号，所述采集时序信号用于控制所述模拟前端部件接收所述传感器阵列输出的所述原始指纹数据。
  4. 根据权利要求3所述的指纹采集装置，其特征在于，所述指纹采集装置还包括屏幕和第二控制部件；
    所述第二控制部件用于确定手指在所述屏幕上的位置信息，并向所述第一控制部件发送所述位置信息；
    所述第一控制部件具体用于：根据所述位置信息确定所述M行传感器单元中的起始 行和结束行，根据所述位置信息从所述多组传感器单元中确定所述目标组传感器单元，在所述行扫描电路向所述起始行输出所述行扫描信号时向所述模拟前端部件输出所述采集时序信号，直到所述行扫描电路向所述结束行输出所述行扫描信号，停止向所述模拟前端部件输出所述采集时序信号，所述目标组开关与所述目标组传感器单元对应，所述起始行与所述结束行之间以及所述目标组传感器单元中包括所述传感器阵列中位于所述位置信息对应的区域内的传感器单元。
  5. 根据权利要求4所示的指纹采集装置，其特征在于，所述第二控制部件还用于向所述屏幕发送所述位置信息；
    所述屏幕用于根据所述位置信息点亮所述屏幕上位于所述位置信息对应的区域内的像素。
  6. 根据权利要求4或5所述的指纹采集装置，其特征在于，所述位置信息对应的区域包括以所述位置信息指示的位置为中心，尺寸为10毫米*10毫米的区域。
  7. 根据权利要求1至6中任一项所述的指纹采集装置，其特征在于，所述开关包括一个薄膜晶体管。
  8. 根据权利要求1至7中任一项所述的指纹采集装置，其特征在于，所述传感器阵列中的每个传感器单元包括一个薄膜晶体管和一个有机光敏二极管，所述有机光敏二极管用于生成所述原始指纹数据，所述传感器单元包括的薄膜晶体管用于：接收所述行扫描信号时输出所述有机光敏二极管生成的所述原始指纹数据。
  9. 一种指纹采集方法，其特征在于，所述指纹采集方法由权利要求1至9中任一项所述的指纹采集装置执行，所述指纹采集方法包括：
    所述行扫描电路逐行输出所述传感器阵列的行扫描信号；
    所述传感器阵列中的传感器单元生成原始指纹数据，接收所述行扫描信号时从数据线输出所述原始指纹数据；
    所述开关部件选择将所述多组传感器单元中的任意一组传感器单元中的所述原始指纹数据输出到所述L个输入通道；
    所述模拟前端部件将所述任意一组传感器单元输出的所述原始指纹数据转换为数字指纹数据。
  10. 根据权利要求9所述的指纹采集方法，其特征在于，所述指纹采集方法还包括：
    所述第一控制部件向所述行扫描电路发送时钟信号；
    所述第一控制部件向所述多组开关发送使能信号，所述使能信号用于导通所述多组开关中的目标组开关和关断所述多组开关中的其他组开关；
    其中，所述行扫描电路逐行输出所述传感器阵列的行扫描信号，包括：
    所述行扫描电路根据所述时钟信号逐行输出所述传感器阵列的行扫描信号；
    所述开关部件选择将所述多组传感器单元中的任意一组传感器单元中的所述原始指纹数据输出到所述L个输入通道，包括：
    所述开关部件根据所述使能信号，选择将所述目标组开关对应的目标组传感器单元中的所述原始指纹数据输出到所述L个输入通道。
  11. 根据权利要求10所述的指纹采集方法，其特征在于，所述指纹采集装置还包括：
    所述第一控制部件在输出所述时钟信号和所述使能信号时，向所述模拟前端部件输出 采集时序信号，所述采集时序信号用于控制所述模拟前端部件接收所述传感器阵列输出的所述原始指纹数据；
    其中，所述模拟前端部件将所述任意一组传感器单元输出的所述原始指纹数据转换为数字指纹数据，包括：
    所述模拟前端部件接收到所述采集时序信号时，将所述任意一组传感器单元输出的所述原始指纹数据转换为数字指纹数据。
  12. 根据权利要求11所述的指纹采集方法，其特征在于，所述指纹采集方法还包括；
    所述第二控制部件确定手指在所述屏幕上的位置信息，并向所述第一控制部件发送所述位置信息；
    其中，所述第一控制部件向所述行扫描电路输出所述时钟信号，向所述开关部件输出所述使能信号和向所述模拟前端部件输出采集时序信号，包括：
    所述第一控制部件根据所述位置信息确定所述M行传感器单元中的起始行和结束行；
    根据所述位置信息从所述多组传感器单元中确定所述目标组传感器单元；
    在所述行扫描电路向所述起始行输出所述行扫描信号时向所述模拟前端部件输出所述采集时序信号，直到所述行扫描电路向所述结束行输出所述行扫描信号，停止向所述模拟前端部件输出所述采集时序信号；
    将所述多组开关中与所述目标组传感器单元对应的一组开关确定为所述目标组开关；
    向所述目标组开关发送导通所述目标组开关的使能信号，以及向所述多组开关中其他组开关发送关断所述其他组开关的使能信号；
    其中，所述起始行与所述结束行之间以及所述目标组传感器单元中包括所述传感器阵列中位于所述位置信息对应的区域内的传感器单元。
  13. 根据权利要求12所示的指纹采集方法，其特征在于，所述指纹采集装置包括：
    所述第二控制部件向所述屏幕发送所述位置信息；
    所述屏幕根据所述位置信息点亮所述屏幕上位于所述位置信息对应的区域内的像素。
  14. 根据权利要求12或13所述的指纹采集方法，其特征在于，所述位置信息对应的区域包括以所述位置信息指示的位置为中心，尺寸为10毫米*10毫米的区域。
  15. 根据权利要求9至14中任一项所述的指纹采集方法，其特征在于，所述开关包括一个薄膜晶体管。
  16. 根据权利要求9至15中任一项所述的指纹采集方法，其特征在于，所述传感器阵列中的每个传感器单元包括一个薄膜晶体管和一个有机光敏二极管，所述有机光敏二极管用于生成所述原始指纹数据，所述传感器单元包括的薄膜晶体管用于：接收所述行扫描信号时输出所述有机光敏二极管生成的所述原始指纹数据。
  17. 一种显示屏，其特征在于，包括显示组件以及根据权利要求1-8任一所述的指纹采集装置。
  18. 一种终端，其特征在于，包括处理器、存储器以及根据权利要求1-8任一所述的指纹采集装置。
PCT/CN2018/075655 2018-02-07 2018-02-07 指纹采集装置和指纹采集方法 WO2019153151A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/CN2018/075655 WO2019153151A1 (zh) 2018-02-07 2018-02-07 指纹采集装置和指纹采集方法
CN201880088470.4A CN111684456B (zh) 2018-02-07 2018-02-07 指纹采集装置和指纹采集方法
EP18905678.1A EP3745297A4 (en) 2018-02-07 2018-02-07 DEVICE FOR COLLECTING FINGERPRINTS AND METHOD FOR COLLECTING FINGERPRINTS
US16/986,609 US11308305B2 (en) 2018-02-07 2020-08-06 Fingerprint collection apparatus and fingerprint collection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/075655 WO2019153151A1 (zh) 2018-02-07 2018-02-07 指纹采集装置和指纹采集方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/986,609 Continuation US11308305B2 (en) 2018-02-07 2020-08-06 Fingerprint collection apparatus and fingerprint collection method

Publications (1)

Publication Number Publication Date
WO2019153151A1 true WO2019153151A1 (zh) 2019-08-15

Family

ID=67548715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/075655 WO2019153151A1 (zh) 2018-02-07 2018-02-07 指纹采集装置和指纹采集方法

Country Status (4)

Country Link
US (1) US11308305B2 (zh)
EP (1) EP3745297A4 (zh)
CN (1) CN111684456B (zh)
WO (1) WO2019153151A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3092685B1 (fr) * 2019-02-11 2021-07-02 Isorg Système de reconnaissance d’empreinte digitale équipé d’un dispositif amélioré d’adressage de lignes
CN115472636A (zh) * 2021-06-11 2022-12-13 群创光电股份有限公司 感测装置以及电子装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101079099A (zh) * 2006-05-24 2007-11-28 芯微技术（深圳）有限公司 滑动式半导体指纹采集器件及其降噪方法
CN103745194A (zh) * 2013-12-20 2014-04-23 深圳市汇顶科技股份有限公司 指纹检测装置和移动终端
US20170154198A1 (en) * 2015-11-26 2017-06-01 Xiaomi Inc. Method, device and computer-readable storage medium for fingerprint recognition
CN106815565A (zh) * 2016-12-28 2017-06-09 华勤通讯技术有限公司 一种电容式指纹识别芯片、移动终端和芯片控制方法
CN107578026A (zh) * 2017-09-15 2018-01-12 京东方科技集团股份有限公司 指纹检测电路、指纹检测电路的检测方法和指纹传感器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104318199B (zh) * 2014-06-23 2020-03-24 上海箩箕技术有限公司 复合式光学传感器及其制作方法和使用方法
US9639733B2 (en) * 2014-11-25 2017-05-02 Cypress Semiconductor Corporation Methods and sensors for multiphase scanning in the fingerprint and touch applications
CN104881238A (zh) * 2015-06-25 2015-09-02 京东方科技集团股份有限公司 一种触控显示装置及其触控方法
CN106570442B (zh) 2015-10-09 2021-05-14 小米科技有限责任公司 指纹识别方法及装置
CN106709405B (zh) * 2015-11-16 2021-01-01 小米科技有限责任公司 移动设备及其屏幕模组、指纹采集方法、装置及电子设备
CN106980808B (zh) * 2016-01-18 2023-11-28 江西指芯智能科技有限公司 一种指纹采集电路及指纹传感器
JP6751359B2 (ja) * 2016-01-27 2020-09-02 株式会社ジャパンディスプレイ 指紋検出装置
US9961178B2 (en) * 2016-03-24 2018-05-01 Motorola Mobility Llc Embedded active matrix organic light emitting diode (AMOLED) fingerprint sensor
CN106095211B (zh) * 2016-06-30 2019-06-18 京东方科技集团股份有限公司 显示面板及其制备方法、显示装置
CN107066920A (zh) * 2016-12-23 2017-08-18 浙江大学 指纹识别面板及装置
KR102364855B1 (ko) * 2017-07-26 2022-02-18 삼성전자주식회사 지문/터치 센서 및 이를 포함하는 전자 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101079099A (zh) * 2006-05-24 2007-11-28 芯微技术（深圳）有限公司 滑动式半导体指纹采集器件及其降噪方法
CN103745194A (zh) * 2013-12-20 2014-04-23 深圳市汇顶科技股份有限公司 指纹检测装置和移动终端
US20170154198A1 (en) * 2015-11-26 2017-06-01 Xiaomi Inc. Method, device and computer-readable storage medium for fingerprint recognition
CN106815565A (zh) * 2016-12-28 2017-06-09 华勤通讯技术有限公司 一种电容式指纹识别芯片、移动终端和芯片控制方法
CN107578026A (zh) * 2017-09-15 2018-01-12 京东方科技集团股份有限公司 指纹检测电路、指纹检测电路的检测方法和指纹传感器

Also Published As

Publication number Publication date
US11308305B2 (en) 2022-04-19
EP3745297A4 (en) 2021-01-20
US20200364437A1 (en) 2020-11-19
EP3745297A1 (en) 2020-12-02
CN111684456B (zh) 2023-12-08
CN111684456A (zh) 2020-09-18

Similar Documents

Publication Publication Date Title
RU2667714C2 (ru) Мобильное устройство и его модуль экрана, способ и устройство для получения отпечатка пальца и электронное устройство
EP3168782B1 (en) Screen module and fingerprint acquisition method
US20180173923A1 (en) Display device, display panel, fingerprint-sensing method, and circuit for sensing fingerprint
US10955953B2 (en) Liquid crystal display device
US20210232791A1 (en) Display panel, fingerprint identification display module and fingerprint identification method
US10671218B2 (en) Floating touch control panel, touch control method of the same, and display device
CN110058717B (zh) 触摸驱动电路、触摸显示装置及通过触摸电路识别笔数据的方法
US10365723B2 (en) Keyboard device with built-in sensor and light source module
KR20160056759A (ko) 이미지 스캔이 가능한 플렉서블 디스플레이 장치 및 이의 구동 방법
KR102140791B1 (ko) 터치 컨트롤러, 터치 컨트롤러를 포함하는 디스플레이 장치 및 전자 장치, 및 터치 센싱 방법
WO2015090082A1 (zh) 指纹检测装置和移动终端
WO2018081981A1 (zh) 生物识别装置和电子装置
US10430632B2 (en) Display device and driving method thereof
CN109002218B (zh) 一种显示面板及其驱动方法、显示装置
US20090122024A1 (en) Display Device Provided With Optical Input Function
KR102458529B1 (ko) 표시장치, 표시패널, 지문 감지 방법 및 이를 위한 회로
US11308305B2 (en) Fingerprint collection apparatus and fingerprint collection method
US20220012452A1 (en) Fingerprint identification method, fingerprint identification device, display panel and readable storage medium
US20170068384A1 (en) Driving circuit, touch display device, and method for driving the touch display device
CN111160287A (zh) 显示面板及其指纹识别方法、显示装置
CN111325142B (zh) 指纹检测的装置和电子设备
US11244139B2 (en) Fingerprint recognition integrated circuit and fingerprint recognition device including the same
US20210374380A1 (en) Fingerprint detection module, electronic device, detection method and apparatus, and storage medium
JP2007102729A (ja) 画像入出力装置、物体認識プログラム、情報入力プログラム、命令入力プログラムおよびパネル制御方法
CN110210421B (zh) 一种成像背板及其驱动方法、指纹识别面板

Legal Events

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

Ref document number: 18905678

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018905678

Country of ref document: EP

Effective date: 20200824