WO2019223695A1 - 显示屏及其阵列基板和指纹识别方法、电子设备 - Google Patents

显示屏及其阵列基板和指纹识别方法、电子设备 Download PDF

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Publication number
WO2019223695A1
WO2019223695A1 PCT/CN2019/087836 CN2019087836W WO2019223695A1 WO 2019223695 A1 WO2019223695 A1 WO 2019223695A1 CN 2019087836 W CN2019087836 W CN 2019087836W WO 2019223695 A1 WO2019223695 A1 WO 2019223695A1
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WIPO (PCT)
Prior art keywords
ultrasonic
display screen
transistor
emitting device
light emitting
Prior art date
Application number
PCT/CN2019/087836
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English (en)
French (fr)
Inventor
禹映雪
赵婷婷
金美灵
李璐璐
金正具
李良梁
郑财
辛秦
牛亚辉
刘雨杰
谷林硕
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2019223695A1 publication Critical patent/WO2019223695A1/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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • 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

Definitions

  • Embodiments of the present disclosure relate to a display screen, an array substrate thereof, a fingerprint recognition method, and an electronic device.
  • the fingerprint recognition function can provide fingerprint unlocking, fingerprint encryption and other functions.
  • the sensor cannot collect enough useful signals. Fingerprints on the screen cannot be recognized across the phone screen.
  • the method of infrared fingerprint recognition sensor and ultrasonic fingerprint recognition sensor to identify fingerprint lines on the screen has sufficiently strong penetrating performance.
  • this method requires higher power consumption and larger module volume.
  • companies that provide ultrasonic fingerprint recognition module packaging have not been able to reduce the size to a sufficiently small size, and the accuracy and speed of recognition need to be greatly improved.
  • At least one embodiment of the present disclosure provides an array substrate for a display screen, including: an ultrasonic transmitter and a plurality of pixel units; the ultrasonic transmitter is configured to transmit ultrasonic waves; each of the plurality of pixel units includes a pixel circuit structure A light emitting device, an ultrasonic receiver, and an ultrasonic receiving circuit structure; the pixel circuit structure is configured to provide a driving current to the light emitting device to drive the light emitting device to light; the ultrasonic receiver is configured to receive an ultrasonic signal; The ultrasonic receiving circuit structure is connected to the pixel circuit structure and is configured to control the ultrasonic receiver to be turned on when the light emitting device is turned on.
  • the array substrate further includes a gate line, a data line, a first voltage signal line, and a second voltage signal line, the gate line, the data line, the first The voltage signal line and the second voltage signal line are respectively connected to the pixel circuit structure to provide a scanning signal, a data signal, a first voltage signal, and a second voltage signal, respectively;
  • the pixel circuit structure includes: a first transistor, and The control terminal of the first transistor is connected to the gate line, and the first terminal of the first transistor is connected to the data line; and the second transistor, the control terminal of the second transistor is connected to the first transistor.
  • the second terminal is connected, the first terminal of the second transistor is connected to the first voltage signal line, and the second terminal of the second transistor is connected to the first electrode of the light emitting device.
  • a second electrode is connected to the second voltage signal line; the second transistor outputs a driving current under the control of the scan signal and the data signal to drive the light emitting device to emit light.
  • the first voltage signal is larger than the second voltage signal.
  • the second voltage signal is a ground voltage.
  • the pixel circuit structure further includes a storage capacitor, a first end of the storage capacitor is connected to a control terminal of the second transistor, and a second end of the storage capacitor A terminal is connected to the first terminal of the second transistor or to the first voltage signal line.
  • the ultrasonic receiving circuit structure includes a third transistor, a control terminal of the third transistor is connected to a first electrode of the light emitting device, and the third transistor The first end of is connected to the data line, and the second end of the third transistor is connected to the first electrode of the ultrasonic receiver.
  • a second electrode of the ultrasonic receiver is connected to a reference voltage terminal.
  • the second electrode of the ultrasonic receiver is connected to a signal output line.
  • the array substrate includes: a base substrate; a thin film transistor (TFT) layer formed on the base substrate; and an ultrasonic wave formed on the TFT layer A transmitter layer; an ultrasonic receiver layer formed on the ultrasonic transmitter layer; and a light emitting device layer formed on the ultrasonic receiver layer; the pixel circuit structure and the ultrasonic receiving circuit structure are formed on Among the TFT layers, the ultrasonic transmitter is formed in the ultrasonic transmitter layer, the ultrasonic receiver is formed in the ultrasonic receiver layer, and the light emitting device is formed in the light emitting device layer In.
  • TFT thin film transistor
  • At least one embodiment of the present disclosure further provides a display screen including any one of the above array substrates.
  • the display screen further includes a fingerprint recognition module, wherein the fingerprint recognition module is configured to perform fingerprint recognition according to an electrical signal generated or output by the ultrasonic receiver.
  • the display screen further includes: a trigger recognition module configured to obtain a user's trigger count and trigger time for triggering the display screen; and an opening module configured to When the number of triggers and the trigger time are determined to meet the turning-on conditions, the ultrasound transmitter is controlled to turn on.
  • the enabling module determines that the enabling condition is satisfied.
  • At least one embodiment of the present disclosure also provides an electronic device including any one of the above display screens.
  • At least one embodiment of the present disclosure also provides a fingerprint recognition method for any of the above display screens, including: generating a grid signal and a data signal, and lighting the light emitting device through the pixel circuit structure; When it is on, control the ultrasonic receiver to turn on so that the ultrasonic receiver generates an electric signal according to the received ultrasonic signal; control the ultrasonic transmitter to transmit ultrasonic waves; and obtain the output of the ultrasonic receiver through the ultrasonic receiving circuit structure. Electrical signals; and performing fingerprint recognition based on the electrical signals output by the ultrasonic receiver.
  • the method before the generating the grid signal and the data signal, the method further includes: determining whether a lighting condition of the display screen is satisfied; and if the lighting condition is satisfied, Condition, the gate signal and the data signal are generated.
  • the method before controlling the ultrasonic transmitter to transmit ultrasonic waves, the method further includes: obtaining a number of trigger times and a trigger time of the user to trigger the display screen; When the number of triggers and the trigger time are determined to meet the opening conditions, the ultrasonic transmitter is controlled to emit ultrasonic waves.
  • At least one embodiment of the present disclosure also provides a display screen including: a plurality of display units, each of the plurality of display units including a light emitting device and an ultrasonic receiver; an ultrasonic transmitter configured to transmit ultrasonic waves; and a controller , Configured to perform fingerprint recognition according to an ultrasonic signal received by the ultrasonic receiver.
  • the ultrasonic receiver is configured to receive an ultrasonic signal and generate an electrical signal according to the received ultrasonic signal;
  • the display unit further includes a pixel circuit structure and an ultrasonic receiving circuit structure.
  • the ultrasonic receiving circuit structure is connected to the pixel circuit structure and is configured to be turned on when the light emitting device is turned on to output the electrical signal.
  • a display screen further includes a grid line, a data line, a first voltage signal line, and a second voltage signal line.
  • the grid line, the data line, the first A voltage signal line and the second voltage signal line are respectively connected to the pixel circuit structure to provide a scanning signal, a data signal, a first voltage signal, and a second voltage signal;
  • the pixel circuit structure includes: a first transistor, and The control terminal of the first transistor is connected to the gate line, and the first terminal of the first transistor is connected to the data line; and the second transistor, the control terminal of the second transistor is connected to the first transistor.
  • the second terminal is connected, the first terminal of the second transistor is connected to the first voltage signal line, and the second terminal of the second transistor is connected to the first electrode of the light emitting device.
  • a second electrode is connected to the second voltage signal line; the second transistor outputs a driving current under the control of the scan signal and the data signal to drive the light emitting device to emit light.
  • the pixel circuit structure further includes a storage capacitor, a first terminal of the storage capacitor is connected to a control terminal of the second transistor, and a second terminal of the storage capacitor is connected to the first terminal of the second transistor or Connected to the first voltage signal line.
  • the ultrasonic receiving circuit structure includes a third transistor, a control terminal of the third transistor is connected to a first electrode of the light emitting device, a first terminal of the third transistor is connected to the data line, and A second terminal of the third transistor is connected to a first electrode of the ultrasonic receiver.
  • the second electrode of the ultrasonic receiver is connected to a reference voltage terminal.
  • the second electrode of the ultrasonic receiver is connected to a signal output line.
  • the display screen includes: a base substrate; a thin film transistor (TFT) layer formed over the base substrate; an ultrasonic transmitter layer formed over the TFT layer; and an ultrasonic transmitter formed An ultrasonic receiver layer above the layer; and a light emitting device layer formed over the ultrasonic receiver layer; the ultrasonic transmitter is formed in the ultrasonic transmitter layer, and the ultrasonic receiver is formed in the Among the ultrasonic receiver layers, the light emitting device is formed in the light emitting device layer.
  • TFT thin film transistor
  • At least one embodiment of the present disclosure also provides a fingerprint recognition method for any of the above display screens, including: controlling the display screen to emit light and controlling the ultrasonic receiver to be turned on; controlling the ultrasonic transmitter to emit ultrasonic waves; and acquiring the An ultrasonic signal received by the ultrasonic receiver; and performing fingerprint recognition based on the ultrasonic signal received by the ultrasonic receiver.
  • At least one embodiment of the present disclosure also provides a fingerprint recognition method for any of the above display screens, including: controlling the display screen to emit light and controlling the ultrasonic receiver to be turned on; controlling the ultrasonic transmitter to emit ultrasonic waves; and acquiring the The ultrasonic receiver outputs an electrical signal according to the received ultrasonic signal; and performs fingerprint recognition according to the electrical signal output by the ultrasonic receiver.
  • FIG. 1 is a schematic block diagram of an array substrate for a display screen according to an embodiment of the present disclosure
  • 2A is a circuit diagram of a pixel unit according to an embodiment of the present disclosure.
  • 2B is a timing diagram of a pixel unit according to an embodiment of the present disclosure.
  • 3A is a schematic circuit structure diagram of an array substrate according to another embodiment of the present disclosure.
  • 3B is a timing diagram of a pixel unit according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of an array substrate of a display screen according to an embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a fingerprint recognition method of a display screen according to an embodiment of the present disclosure
  • FIG. 6 is a block diagram of a display screen according to an embodiment of the present disclosure.
  • FIG. 7 is a flowchart of a fingerprint recognition method of a display screen according to another embodiment of the present disclosure.
  • FIG. 1 is a schematic block diagram of an array substrate for a display screen according to an embodiment of the present disclosure. It should be noted that the array substrate of the display screen of the embodiment of the present disclosure may be applied to a mobile terminal to implement full-screen fingerprint recognition of the mobile terminal.
  • Mobile terminals can include mobile phones, tablets, and handheld computers.
  • an array substrate of a display screen includes a plurality of pixel units 100 and an ultrasonic transmitter 400.
  • each pixel unit 100 may include a pixel circuit structure (driving module) 110, a light emitting device 120, at least one ultrasonic receiver 200, and an ultrasonic receiving circuit structure (control module) 300.
  • driving module driving module
  • control module ultrasonic receiving circuit structure
  • the pixel circuit structure 110 is used to provide a driving current to the light emitting device 120 to drive the light emitting device 120 to light up.
  • the light emitting device 120 may be a mini-light emitting diode (mini-LED), but is not limited thereto.
  • the light emitting device 120 may be a small-pitch LED or a micro-LED.
  • the ultrasonic receiver 200 is configured to receive an ultrasonic signal. For example, after the ultrasonic transmitter transmits ultrasonic waves, the ultrasonic signals reflected by the fingers are received by the ultrasonic receiver 200. The ultrasonic receiver 200 generates electrical signals according to the received ultrasonic signals. The electrical signals include, for example, but not limited to this. For example, the ultrasonic receiver 200 is configured to receive an ultrasonic signal and generate an electrical signal according to the received ultrasonic signal.
  • the ultrasound receiving circuit structure 300 is configured to be turned on when the light emitting device 120 is turned on, thereby controlling the ultrasound receiver 200 to turn on. It should be noted that after being turned on, the ultrasonic receiver 200 described in this embodiment may enter a state of waiting for receiving signals. Generally speaking, when the display screen needs to be fingerprint-recognized, the display screen needs to be lit. Therefore, in the embodiment of the present disclosure, while the light-emitting device 120 is lit, the ultrasonic receiver 200 is turned on to make it It is in a working state and waiting to receive the ultrasonic wave emitted by the ultrasonic transmitter. For example, when the ultrasound receiver 200 is turned on, it may mean that the ultrasound receiver 200 is in a state capable of outputting signals. For example, an electric signal may be generated and output according to the received ultrasound signals.
  • the ultrasonic receiving circuit structure 300 is configured to be turned on when the light emitting device 120 is turned on to output an electrical signal generated by the ultrasonic receiver 200 according to an ultrasonic signal.
  • the ultrasonic receiver 200 includes a first electrode, a second electrode, and a first piezoelectric material located between the first electrode and the second electrode.
  • the materials of the first electrode and the second electrode of the ultrasonic receiver 200 may be metal materials, conductive metal oxide materials, or other conductive materials, which is not limited.
  • the conductive metal oxide material includes, but is not limited to, indium tin oxide (ITO).
  • the first piezoelectric material in this embodiment may include a piezoelectric polymer material such as polyvinylidene fluoride (PVDF), but is not limited thereto.
  • PVDF polyvinylidene fluoride
  • the first piezoelectric material can be selected as required.
  • the ultrasonic transmitter 400 is used to transmit ultrasonic waves.
  • the ultrasonic transmitter 400 may perform an ultrasonic transmission operation to identify a finger fingerprint by using an ultrasonic fingerprint recognition sensor principle.
  • each pixel unit 100 may be provided with one ultrasonic transmitter 400, but is not limited thereto.
  • the ultrasonic transmitter 400 includes a first electrode, a second electrode, and a second piezoelectric material located between the first electrode and the second electrode.
  • the materials of the first electrode and the second electrode of the ultrasonic transmitter 400 may be metal materials, conductive metal oxide materials, or other conductive materials, which is not limited.
  • the conductive metal oxide material includes, but is not limited to, indium tin oxide (ITO).
  • the second piezoelectric material may include, but is not limited to, a piezoelectric polymer material such as polyvinylidene fluoride (PVDF).
  • PVDF polyvinylidene fluoride
  • the second piezoelectric material can be selected as required.
  • the first piezoelectric material and the second piezoelectric material may be the same or different. As long as the second piezoelectric material can be excited to generate an ultrasonic signal, the first piezoelectric material can convert the received ultrasonic signal Just an electrical signal.
  • a mobile phone is taken as an example for description as a carrier of an array substrate of a display screen provided by the embodiments of the present disclosure.
  • a fingerprint lock screen password is set on the mobile phone
  • the user can first touch the display screen of the mobile phone with his finger to control all
  • the pixel circuit structure 110 provides a driving current to the corresponding light emitting device 120 to drive the corresponding light emitting device 120 to light (ie, all the pixel circuit structures 110 scan the corresponding pixel unit 100 to drive the light emitting device 120 corresponding to the pixel unit 100 to light up.
  • all the ultrasonic receiving circuit structures 300 can control the corresponding ultrasonic receiver 200 to be turned on to make it enter a state of waiting for receiving signals. It should be noted that when the display screen described in this embodiment is touched, an integrated circuit (IC) of the display screen can receive a touch signal of the display screen, and control all of the touch signals when the touch signal is received.
  • the pixel circuit structure 110 provides driving current to the corresponding light-emitting device 120 and drives the corresponding light-emitting device 120 to light up.
  • the IC of the display screen can also trigger the ultrasonic transmitter 400 to perform ultrasonic transmission.
  • the emitted ultrasonic wave hits the finger that is in contact with the display screen of the mobile phone, reflection will occur. wave.
  • the ultrasonic wave receiver 200 receives the reflected wave, the reflected wave measurement can be used to form a fingerprint image. For example, the intensity of the reflected wave at the position of the valley and ridge corresponding to the fingerprint received by the ultrasonic receiver 200 is different, and the positions of the valley and ridge in the fingerprint can be determined based on the electrical signal.
  • the phone's built-in program or display can then verify the fingerprint image and unlock the phone after successful verification.
  • the ultrasonic receiver can be correspondingly arranged in each pixel unit to realize full-screen fingerprint recognition, and each pixel unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • the ultrasonic receiving circuit structure of the ultrasonic receiver is integrated into the driving circuit of the light emitting device, and a part of the circuit of the pixel circuit structure is shared to realize the opening control of the ultrasonic receiver or the electrical signal of the ultrasonic receiver. Output control reduces the complexity and scale of the circuit, and also reduces the size of the module.
  • the ultrasonic signal received by the ultrasonic receiver includes a reflected wave signal, but is not limited thereto.
  • the ultrasonic signal received by the ultrasonic receiver may further include an ultrasonic signal transmitted by an ultrasonic transmitter.
  • the ultrasonic signal transmitted by the ultrasonic transmitter and the reflected wave signal arrive at the ultrasonic receiver at different times, the two types of waves can be distinguished by the derived electrical signal.
  • the user may also first press the wake-up button on the mobile phone to light up the screen, so that the ultrasonic receiving circuit structure 300 controls the ultrasonic receiver 200. Turn it on to wait for signal reception.
  • the user presses the wake-up button on the mobile phone all the pixel circuit structures 110 can provide driving current to the corresponding light emitting device 120 and drive the corresponding light emitting device 120 to light up.
  • all the ultrasonic receiving circuit structures 300 can control the corresponding The ultrasonic receiver 200 is turned on so that it enters a state of waiting for receiving signals.
  • the screen may be illuminated in other ways, such as triggering of an application program, such as an incoming call from a mobile phone, or a voice trigger, and so on.
  • the display screen can obtain the user's trigger count and trigger time of the display screen. And when it is judged that the opening condition is satisfied according to the number of triggers and the trigger time, the ultrasonic transmitter is controlled to be turned on.
  • the turning-on condition may be set according to actual conditions.
  • the turning-on condition may be that the display screen is triggered twice or three times in a row, and each time the display screen is triggered does not exceed 1 second.
  • the above-mentioned mobile phone is taken as an example for description as a carrier of an array substrate of a display screen provided by an embodiment of the present disclosure.
  • the ultrasonic receiving circuit structure 300 controls the ultrasonic receiver 200 to turn on to enter the state of waiting for signal reception
  • the IC of the display can control the ultrasonic transmitter 400 to perform ultrasonic transmission to use ultrasonic fingerprint recognition.
  • the sensor principle recognizes finger fingerprints.
  • the ultrasonic transmitter 400 may also be triggered.
  • the preset time can be set according to the actual situation.
  • the preset time can be 3 seconds, 4 seconds, or 5 seconds.
  • the pixel circuit structure 110 may include a first transistor T1 and a second transistor T2.
  • the pixel circuit structure 110 further includes a storage capacitor C.
  • the ultrasonic receiving circuit structure 300 may include a third transistor T3.
  • control terminal of the first transistor T1 is connected to the gate line GT, and the first terminal of the first transistor T1 is connected to the data line SL.
  • the control terminal of the second transistor T2 is connected to the second terminal of the first transistor T1, the first terminal of the second transistor T2 is connected to the power source Vee, and the second terminal of the second transistor T2 is connected to the first electrode of the light emitting device 120 (for example, (Anode).
  • the first terminal of the second transistor T2 is connected to the power source Vee through the first voltage signal line L1.
  • the second electrode (for example, the cathode) of the light emitting device 120 is connected to the second voltage signal line L2.
  • the first voltage signal line L1 is configured to provide a first voltage signal.
  • the second voltage signal line L2 is configured to provide a second voltage signal.
  • the first voltage signal is greater than the second voltage signal, but is not limited thereto.
  • the second voltage signal is a reference voltage Vref1, and for example, the reference voltage Vref1 is a ground voltage.
  • the first electrode in other pixel circuit structures, may be a cathode, and accordingly, the first electrode may be an anode.
  • the first terminal of the storage capacitor C is connected to the control terminal of the second transistor T2, and the second terminal of the storage capacitor C is connected to the first terminal of the second transistor T2.
  • the second terminal of the storage capacitor C is connected to the first voltage signal line L1.
  • the control terminal of the third transistor T3 is connected to the first electrode of the light emitting device 120, the first terminal of the third transistor T3 is connected to the data line SL, and the second terminal of the third transistor T3 is connected to the ultrasonic wave receiver. ⁇ 200 ⁇ 200 connected.
  • the second terminal of the third transistor T3 is connected to the first electrode of the ultrasonic receiver 200.
  • the second electrode of the ultrasonic receiver 200 is connected to the signal output line L3.
  • the signal output line L3 may be located on the same layer as the data line SL and insulated from the data line SL.
  • first transistor T1, the second transistor T2, and the third transistor T3 described in this embodiment may all be thin film transistors.
  • the first transistor T1, the second transistor T2, and the third transistor T3 may be turned on when the gate signal is at a high level.
  • the power supply Vee provides a high-level signal.
  • a mobile phone is used as an example for description as a carrier of an array substrate of a display screen provided by the embodiments of the present disclosure.
  • the IC of the display can control the grid line GT in the pixel unit 100 to output a high-level signal, and the power source Vee in the pixel unit 100 generates a voltage (such as As shown in FIG. 2B), at this time, the first transistor T1 is turned on, and then the second transistor T2 is turned on, so that the light emitting device 120 is turned on and turned on.
  • the voltage generated by the power source Vee can be applied to the control terminal of the third transistor T3, so that the third transistor T3 is turned on to power the ultrasonic receiver 200, so that the ultrasonic receiver 200 is turned on and entered. Waiting for signal status.
  • the ultrasonic receiver 200 may generate an electrical signal according to the received ultrasonic signal, and the electrical signal may be output through the signal output line L3.
  • the signal output line L3 may be connected to a fingerprint recognition module or a pattern recognition circuit to implement a fingerprint recognition function.
  • the storage capacitor C starts to charge to store the data signal.
  • the storage capacitor C can start to discharge to maintain the second The voltage at the control terminal of the transistor T2 provides a continuous current to the light emitting device 120 and the ultrasonic receiver 200 of the pixel unit 100 until the power in the storage capacitor C is exhausted.
  • the grid line GT described in this embodiment may also be triggered by touching the display screen of the mobile phone with a finger.
  • an electrical signal generated by the ultrasonic receiver may be output.
  • adjustment can be made on the basis of FIG. 2A, and the control terminal of the third transistor T3 is connected to the first electrode of the light emitting device 120 to be adjusted to the control terminal of the third transistor T3 and the light emitting device 120.
  • the second electrode is connected. Except for this, reference may be made to FIG. 2A, which is not repeated here.
  • FIG. 3A is a schematic circuit structure diagram of an array substrate according to another embodiment of the present disclosure. As shown in FIG. 3A, compared with the structure shown in FIG. 2A, the ultrasonic receiver 200 is connected to a reference voltage line L4. For example, the reference voltage line L4 is configured to provide a reference voltage Vref2.
  • the reference voltage Vref1 or the reference voltage Vref2 may be a fixed voltage.
  • the same pixel unit can use the same data signal, but it is not limited thereto.
  • the output electrical signals may be compensated by an algorithm so that each ultrasonic receiver 200 has the same reference voltage, but is not limited thereto.
  • FIG. 3B is a timing diagram of a pixel unit according to an embodiment of the present disclosure. For example, this timing can be applied to the array substrate shown in FIG. 3A.
  • the gate signal when the gate signal is at a high level stage (T1 stage, signal input stage) within one frame time, the data signal is applied to the gate of the second transistor T2, and during the sustain stage (T2 Stage), no data signal is applied.
  • the data line SL can be used as a signal output line of the ultrasonic receiver 200.
  • fingerprint recognition can be performed by a fingerprint recognition circuit.
  • the structure shown in FIG. 3A uses the data line SL as a signal output line of the ultrasonic receiver 200, and further uses a pixel circuit structure.
  • the above display screen and its array substrate may further include a base substrate 500 (for example, a glass base substrate), a thin film transistor (TFT) layer 600 formed on the base substrate 500, An ultrasonic transmitter layer 700 formed on the TFT layer 600, an ultrasonic receiver layer 800 formed on the ultrasonic transmitter layer, and a light emitting device layer 900 formed on the ultrasonic receiver layer 800.
  • a base substrate 500 for example, a glass base substrate
  • TFT thin film transistor
  • the pixel circuit structure 110 (not shown in FIG. 4 and referring to FIG. 1) and the ultrasonic receiving circuit structure 300 (not shown in FIG. 4 and referring to FIG. 1) may be formed in the TFT layer 600 and the ultrasonic transmitter 400 (FIG. 4) (Not shown) may be formed in the ultrasonic transmitter layer 700, the ultrasonic receiver 200 may be formed in the ultrasonic receiver layer 800, and the light emitting device 120 may be formed in the light emitting device layer 900.
  • a driving current is provided to a light emitting device through a pixel circuit structure to drive the light emitting device to light, so that the ultrasonic receiving circuit structure controls the ultrasonic receiver when the light emitting device is lighted.
  • the ultrasonic receiving circuit structure controls the ultrasonic receiver when the light emitting device is lighted.
  • the ultrasonic receiving circuit structure of the ultrasonic receiver is integrated into the driving circuit of the light emitting device, and a part of the driving circuit is shared to realize the opening control of the ultrasonic receiver, which reduces the circuit complexity and The circuit scale can also reduce the size of the module.
  • each pixel unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • At least one embodiment of the present disclosure further provides a display screen including an array substrate of any of the above display screens.
  • the display screen further includes a fingerprint recognition module configured to perform fingerprint recognition according to an ultrasonic signal received by the ultrasonic receiver or an electrical signal output by the ultrasonic receiver.
  • the display screen further includes: a trigger recognition module and an opening module.
  • the trigger recognition module is configured to obtain a user's trigger count and trigger time of the display screen;
  • the open module is configured to When the trigger time judges that the opening condition is satisfied, the ultrasonic transmitter is controlled to be turned on.
  • the enabling module determines that the enabling condition is satisfied.
  • the preset time threshold and the preset number of times threshold can be set according to actual conditions.
  • the display screen of the embodiment of the present disclosure can realize full-screen fingerprint recognition through the above-mentioned array substrate of the display screen, and by integrating the ultrasonic receiving circuit structure of the ultrasonic receiver into the driving circuit of the light emitting device, the circuit can be reduced.
  • the complexity and circuit scale can reduce the size of the module.
  • each pixel unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • the present disclosure also provides an electronic device including any of the above display screens.
  • the electronic device provided by the embodiment of the present disclosure can realize full-screen fingerprint recognition through the above display screen, and the circuit can be reduced by integrating the ultrasonic receiving circuit structure of the ultrasonic receiver into the driving circuit (pixel circuit structure) of the light emitting device.
  • the complexity and circuit scale can reduce the size of the module.
  • each pixel unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • a polarizer 001 is further disposed on a side of the light emitting device 120 that is far from the base substrate 500.
  • the polarizer 001 can reduce the metal reflection in the display.
  • the light emitting device 120 may include a first electrode, a second electrode, and a light emitting functional layer located between the first electrode and the second electrode.
  • FIG. 5 is a flowchart of a fingerprint recognition method of a display screen according to an embodiment of the present disclosure.
  • the fingerprint recognition method of a display screen includes the following steps.
  • S5. Perform fingerprint recognition according to the ultrasonic signals received by the ultrasonic receiver.
  • the method before generating the grid line signal, the method further includes: determining whether a lighting condition of the display screen is satisfied; and if the lighting condition is satisfied, generating a grid line signal.
  • a fingerprint recognition method includes the following steps: generating a gate signal and a data signal, and lighting the light emitting device through the pixel circuit structure; and controlling the light emitting device when the light emitting device is lit.
  • the ultrasonic receiver is turned on so that the ultrasonic receiver generates an electric signal according to the received ultrasonic signal; controlling the ultrasonic transmitter to emit ultrasonic waves; obtaining the electrical signal output by the ultrasonic receiver through the ultrasonic receiving circuit structure; and The electrical signal output by the ultrasonic receiver is used for fingerprint identification.
  • the method before controlling the ultrasonic transmitter to transmit ultrasonic waves, the method further includes: obtaining the number of triggers and the trigger time of the display screen triggered by the user; and controlling the ultrasonic waves when the opening condition is satisfied according to the trigger number and the trigger time.
  • the transmitter emits ultrasound.
  • a grid signal and a data signal are generated, and the light emitting device is lit by the pixel circuit structure.
  • the ultrasonic receiver corresponding to the light emitting device is controlled to be turned on.
  • the ultrasonic transmitter to transmit ultrasonic waves, then obtain the ultrasonic signals received by the ultrasonic receiver, and perform fingerprint recognition based on the ultrasonic signals received by the ultrasonic receiver. Therefore, full-screen fingerprint recognition can be achieved, and each pixel unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • FIG. 6 is a block diagram of a display screen according to an embodiment of the present disclosure.
  • a display screen provided by an embodiment of the present disclosure includes a plurality of display units 10, an ultrasonic transmitter 400, and a controller 30.
  • each display unit 10 includes a light emitting device 120 and an ultrasonic receiver 200; the ultrasonic transmitter 400 is configured to emit ultrasonic waves.
  • the controller 30 is configured to perform fingerprint recognition based on an ultrasonic signal received by the ultrasonic receiver 200.
  • the display screen may further include: a base substrate 500 (for example, a glass substrate), and a thin film transistor (Thin Film Transistor, TFT) formed on the base substrate 500. ) Layer 600, an ultrasonic transmitter layer 700 formed on the TFT layer, an ultrasonic receiver layer 800 formed on the ultrasonic transmitter layer 700, and a light emitting device layer 900 formed on the ultrasonic receiver layer 800.
  • a base substrate 500 for example, a glass substrate
  • TFT Thin Film Transistor
  • an ultrasonic transmitter 400 (not shown in FIG. 4) is formed in the ultrasonic transmitter layer 700
  • an ultrasonic receiver 200 is formed in the ultrasonic receiver layer 800
  • a light emitting device 120 is formed in the light emitting device layer 900.
  • the display screen uses a light emitting device and an ultrasonic receiver, and an ultrasonic transmitter and a controller in each display unit to identify a finger fingerprint. Therefore, full-screen fingerprint recognition can be achieved, and each display unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • FIG. 7 is a flowchart of a fingerprint recognition method of a display screen according to another embodiment of the present disclosure.
  • the fingerprint recognition method of a display screen includes the following steps.
  • S104 Perform fingerprint recognition according to the ultrasonic signal received by the ultrasonic receiver.
  • a fingerprint recognition method of a display screen includes: controlling the display screen to emit light and controlling the ultrasonic receiver to be turned on; controlling the ultrasonic transmitter to emit ultrasonic waves; and acquiring the ultrasonic receiver An electrical signal output according to the received ultrasonic signal; and fingerprint recognition is performed according to the electrical signal output by the ultrasonic receiver.
  • the fingerprint recognition method of a display screen provided in the embodiments of the present disclosure, firstly control the display screen to emit light, and control the ultrasonic receiver to turn on, then control the ultrasonic transmitter to emit ultrasonic waves, and obtain the ultrasonic signals received by the ultrasonic receiver.
  • the ultrasonic signal received by the ultrasonic receiver is used for fingerprint identification. Therefore, full-screen fingerprint recognition can be achieved, and each display unit has an ultrasonic receiver, which can greatly improve the accuracy of recognition.
  • the transistors used in the embodiments of the present disclosure may be thin film transistors, field effect transistors, or other switching devices with the same characteristics.
  • the source and drain of the transistor used here can be symmetrical in structure, so there can be no difference in structure of the source and drain of the transistor.
  • one terminal is directly described as the first terminal and the other terminal is the second terminal. Therefore, the first terminal of all or part of the transistors in the embodiments of the present disclosure It can be interchanged with the second end as required.
  • the first terminal of the transistor according to the embodiment of the present disclosure may be a source and the second terminal may be a drain; or, the first terminal of the transistor is a drain and the second terminal is a source.

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Abstract

一种显示屏及其阵列基板和指纹识别方法、电子设备，所述阵列基板包括：超声波发射器(400)和多个像素单元(100)；超声波发射器(400)被配置为发射超声波；多个像素单元(100)的每个包括像素电路结构(110)、发光器件(120)、超声波接收器(200)和超声波接收电路结构(300)；像素电路结构(110)被配置为给发光器件(120)提供驱动电流以驱动发光器件点亮；超声波接收器(200)被配置为接收超声波信号并根据接收到的超声波信号产生电信号；超声波接收电路结构(300)与像素电路结构(110)相连，并被配置为在发光器件(120)被点亮时控制超声波接收器(200)开启。可简化电路结构。

Description

显示屏及其阵列基板和指纹识别方法、电子设备
相关申请的交叉引用
本专利申请要求于2018年5月25日递交的中国专利申请第201810515246.0号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及一种显示屏及其阵列基板和指纹识别方法、电子设备。
背景技术
目前在市面上的很多手机都添加了指纹识别功能，指纹识别功能可以提供指纹解锁，指纹加密等功能，然而由于屏幕模组厚度大导致传感器收集不到足够多有用的信号，电容式指纹识别传感器无法隔着手机屏识别按在屏幕上的指纹。
相关技术中，红外光指纹识别传感器和超声波指纹识别传感器来识别屏幕上的指纹纹路的方法，具有足够强的穿透性能，然而这种方法需要更高的功耗和更大的模组体积。目前，提供超声波指纹识别模组封装的公司，还无法将体积缩到足够小，识别准确率和速度也需要大幅提升。
发明内容
本公开至少一实施例提供一种显示屏的阵列基板，包括：超声波发射器和多个像素单元；所述超声波发射器被配置为发射超声波；所述多个像素单元的每个包括像素电路结构、发光器件、超声波接收器和超声波接收电路结构；所述像素电路结构被配置为给所述发光器件提供驱动电流以驱动所述发光器件点亮；所述超声波接收器被配置为接收超声波信号；所述超声波接收电路结构与所述像素电路结构相连，并被配置为在所述发光器件被点亮时控制所述超声波接收器开启。
根据本公开一个或多个实施例提供的阵列基板，阵列基板还包括栅线、 数据线、第一电压信号线和第二电压信号线，所述栅线、所述数据线、所述第一电压信号线和所述第二电压信号线分别与所述像素电路结构连接以分别提供扫描信号、数据信号、第一电压信号和第二电压信号；所述像素电路结构包括：第一晶体管，所述第一晶体管的控制端与所述栅线相连，所述第一晶体管的第一端与所述数据线相连；以及第二晶体管，所述第二晶体管的控制端与所述第一晶体管的第二端相连，所述第二晶体管的第一端与所述第一电压信号线相连，且所述第二晶体管的第二端与所述发光器件的第一电极相连，所述发光器件的第二电极与所述第二电压信号线相连；所述第二晶体管在所述扫描信号及所述数据信号的控制下输出驱动电流以驱动所述发光器件发光。
根据本公开一个或多个实施例提供的阵列基板，所述第一电压信号大于所述第二电压信号。
根据本公开一个或多个实施例提供的阵列基板，所述第二电压信号为接地电压。
根据本公开一个或多个实施例提供的阵列基板，所述像素电路结构还包括存储电容，所述存储电容的第一端与所述第二晶体管的控制端相连，所述存储电容的第二端与所述第二晶体管的第一端或与所述第一电压信号线相连。
根据本公开一个或多个实施例提供的阵列基板，所述超声波接收电路结构包括：第三晶体管，所述第三晶体管的控制端与所述发光器件的第一电极相连，所述第三晶体管的第一端与所述数据线相连，所述第三晶体管的第二端与所述超声波接收器的第一电极相连。
根据本公开一个或多个实施例提供的阵列基板，所述超声波接收器的第二电极与参考电压端相连。
根据本公开一个或多个实施例提供的阵列基板，所述超声波接收器的第二电极与信号输出线相连。
根据本公开一个或多个实施例提供的阵列基板，该阵列基板包括：衬底基板；形成在所述衬底基板之上的薄膜晶体管(TFT)层；形成在所述TFT层之上的超声波发射器层；形成在所述超声波发射器层之上的超声波接收器层；以及形成在所述超声波接收器层之上的发光器件层；所述像素电路结构、 所述超声波接收电路结构形成在所述TFT层之中，所述超声波发射器形成在所述超声波发射器层之中，所述超声波接收器形成在所述超声波接收器层之中，所述发光器件形成在所述发光器件层之中。
本公开至少一实施例还提供一种显示屏，包括上述任一阵列基板。
根据本公开一个或多个实施例提供的显示屏，该显示屏还包括：指纹识别模块，其中，所述指纹识别模块被配置为根据所述超声波接收器产生或输出的电信号进行指纹识别。
根据本公开一个或多个实施例提供的显示屏，该显示屏还包括：触发识别模块，被配置为获取用户的触发所述显示屏的触发次数和触发时间；以及开启模块，被配置为根据所述触发次数和所述触发时间判断满足开启条件时，控制所述超声波发射器开启。
根据本公开一个或多个实施例提供的显示屏，当每次的所述触发时间小于预设时间阈值，且触发次数等于预设次数阈值时，所述开启模块判断满足开启条件。
本公开至少一实施例还提供一种电子设备，包括上述任一显示屏。
本公开至少一实施例还提供一种上述任一显示屏的指纹识别方法，包括：生成栅信号和数据信号，通过所述像素电路结构将所述发光器件点亮；在所述发光器件被点亮时，控制所述超声波接收器开启，以使超声波接收器根据接收到的超声波信号产生电信号；控制所述超声波发射器发射超声波；通过所述超声波接收电路结构获取所述超声波接收器输出的电信号；以及根据所述超声波接收器输出的电信号进行指纹识别。
根据本公开一个或多个实施例提供的显示屏的指纹识别方法，在所述生成栅信号和数据信号之前，还包括：判断是否满足所述显示屏的点亮条件；如果满足所述点亮条件，则生成所述栅信号和数据信号。
根据本公开一个或多个实施例提供的显示屏的指纹识别方法，在控制所述超声波发射器发射超声波之前，该方法还包括：获取用户的触发所述显示屏的触发次数和触发时间；根据所述触发次数和所述触发时间判断满足开启条件时，控制所述超声波发射器发射超声波。
本公开至少一实施例还提供一种显示屏，包括：多个显示单元，所述多个显示单元的每个包括发光器件和超声波接收器；超声波发射器，被配置为 发射超声波；以及控制器，被配置为根据所述超声波接收器接收到的超声波信号进行指纹识别。
根据本公开一个或多个实施例提供的显示屏，所述超声波接收器被配置为接收超声波信号并根据接收到的超声波信号产生电信号；所述显示单元还包括像素电路结构和超声波接收电路结构，所述超声波接收电路结构与所述像素电路结构相连，并被配置为在所述发光器件被点亮时被开启，以输出所述电信号。
根据本公开一个或多个实施例提供的显示屏，该显示屏还包括栅线、数据线、第一电压信号线和第二电压信号线，所述栅线、所述数据线、所述第一电压信号线和所述第二电压信号线分别与所述像素电路结构连接以提供扫描信号、数据信号、第一电压信号和第二电压信号；所述像素电路结构包括：第一晶体管，所述第一晶体管的控制端与所述栅线相连，所述第一晶体管的第一端与所述数据线相连；以及第二晶体管，所述第二晶体管的控制端与所述第一晶体管的第二端相连，所述第二晶体管的第一端与所述第一电压信号线相连，且所述第二晶体管的第二端与所述发光器件的第一电极相连，所述发光器件的第二电极与所述第二电压信号线相连；所述第二晶体管在所述扫描信号及所述数据信号的控制下输出驱动电流以驱动所述发光器件发光。
例如，所述像素电路结构还包括存储电容，所述存储电容的第一端与所述第二晶体管的控制端相连，所述存储电容的第二端与所述第二晶体管的第一端或与所述第一电压信号线相连。
例如，所述超声波接收电路结构包括：第三晶体管，所述第三晶体管的控制端与所述发光器件的第一电极相连，所述第三晶体管的第一端与所述数据线相连，所述第三晶体管的第二端与所述超声波接收器的第一电极相连。
例如，所述超声波接收器的第二电极与参考电压端相连。
例如，所述超声波接收器的第二电极与信号输出线相连。
例如，所述显示屏包括：衬底基板；形成在所述衬底基板之上的薄膜晶体管(TFT)层；形成在所述TFT层之上的超声波发射器层；形成在所述超声波发射器层之上的超声波接收器层；以及形成在所述超声波接收器层之上的发光器件层；所述超声波发射器形成在所述超声波发射器层之中，所述超声波接收器形成在所述超声波接收器层之中，所述发光器件形成在所述发光 器件层之中。
本公开至少一实施例还提供一种上述任一显示屏的指纹识别方法，包括：控制所述显示屏发光，并控制所述超声波接收器开启；控制所述超声波发射器发射超声波；获取所述超声波接收器接收的超声波信号；以及根据所述超声波接收器接收到的超声波信号进行指纹识别。
本公开至少一实施例还提供一种上述任一显示屏的指纹识别方法，包括：控制所述显示屏发光，并控制所述超声波接收器开启；控制所述超声波发射器发射超声波；获取所述超声波接收器根据接收到的超声波信号输出的电信号；以及根据所述超声波接收器输出的所述电信号进行指纹识别。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1是根据本公开一个实施例的显示屏的阵列基板的方框示意图；
图2A是根据本公开一个实施例的像素单元的电路图；
图2B是根据本公开一个实施例的像素单元的时序图；
图3A为本公开另一实施例提供的阵列基板的电路结构示意图；
图3B是根据本公开一个实施例的像素单元的时序图；
图4是根据本公开一个实施例的显示屏的阵列基板的示意图；
图5是根据本公开一个实施例的显示屏的指纹识别方法的流程图；
图6是根据本公开一个实施例的显示屏的方框示意图；以及
图7是根据本公开另一个实施例的显示屏的指纹识别方法的流程图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
下面结合附图来描述本公开实施例的显示屏及其阵列基板和指纹识别方法、电子设备。
图1是根据本公开一个实施例的显示屏的阵列基板的方框示意图。需要说明的是，本公开实施例的显示屏的阵列基板可应用在移动终端中，以实现移动终端的全屏指纹识别。移动终端可包括手机、平板电脑和掌上电脑等。
如图1所示，本公开实施例的显示屏的阵列基板包括：多个像素单元100、和超声波发射器400。
例如，每个像素单元100可包括像素电路结构(驱动模块)110、发光器件120、至少一个超声波接收器200和超声波接收电路结构(控制模块)300。应说明的是，当该实施例中所描述的至少一个超声波接收器200为多个超声波接收器200时，该多个超声波接收器200可串联或并联在一起。
例如，像素电路结构110用于给发光器件120提供驱动电流以驱动发光器件120点亮。例如，发光器件120可为微型发光二极管(mini-Light Emitting Diode，mini-LED)，但不限于此。
可选地，发光器件120还可为小间距LED或微LED(Micro-LED)。
例如，超声波接收器200被配置为接收超声波信号。例如，超声波发射器发射超声波后，经过手指被反射的超声波信号被超声波接收器200接收，超声波接收器200根据接收到的超声波信号产生电信号，电信号例如包括电压，但不限于此。例如，超声波接收器200被配置为接收超声波信号并根据接收到的超声波信号产生电信号。
例如，在一些实施例中，超声波接收电路结构300被配置为在发光器件120被点亮时被开启，从而控制超声波接收器200开启。应说明的是，该实施例中所描述的超声波接收器200在被开启后，可进入等待接收信号状态。通常来说，当显示屏需要进行指纹识别时，是需要显示屏处于点亮状态的，因此在本公开实施例中，在发光器件120被点亮的同时，将超声波接收器200开启，使其处于可工作状态，等待接收超声波发射器发射的超声波。例如，超声波接收器200被开启可指超声波接收器200处于可输出信号的状态，例如，可根据接收的超声波信号产生并输出电信号。
例如，在另一些实施例中，超声波接收电路结构300被配置为在发光器件120被点亮时开启以输出超声波接收器200根据超声波信号而产生的电信号。
例如，超声波接收器200包括第一电极、第二电极和位于第一电极和第二电极之间的第一压电材料。
例如，超声波接收器200的第一电极和第二电极的材料可以为金属材料、导电的金属氧化物材料，也可以为其他导电材料，对此不作限制。导电的金属氧化物材料例如包括氧化铟锡(ITO)，但不限于此。
例如，本实施例中的第一压电材料可以包括聚偏氟乙烯(PVDF)等压电聚合物材料，但不限于此。第一压电材料可根据需要进行选择。
例如，超声波发射器400用于发射超声波。
例如，超声波发射器400可在显示屏被手指触摸时，进行超声发射工作，以利用超声波指纹识别传感器原理对手指指纹进行识别。
例如，在一些实施例中，每个像素单元100可设置一个超声波发射器400，但不限于此。
例如，超声波发射器400包括第一电极、第二电极和位于第一电极和第二电极之间的第二压电材料。
例如，超声波发射器400的第一电极和第二电极的材料可以为金属材料、导电的金属氧化物材料，也可以为其他导电材料，对此不作限制。导电的金属氧化物材料例如包括氧化铟锡(ITO)，但不限于此。
例如，第二压电材料可以包括聚偏氟乙烯(PVDF)等压电聚合物材料，但不限于此。第二压电材料可根据需要进行选择。
本公开的实施例中，第一压电材料和第二压电材料可以相同，也可以不同，只要第二压电材料能被激发产生超声波信号，第一压电材料能将接收的超声波信号转化为电信号即可。
为了便于对本公开的实施例的描述，以手机作为本公开实施例提供的显示屏的阵列基板的载体为例来进行说明。例如，如果手机设定了指纹锁屏密码，则当用户需要使用手机时(例如，解锁手机浏览网页、打游戏、上微信等)，可先利用手指触摸该手机的显示屏，以控制所有的像素电路结构110给对应的发光器件120提供驱动电流，驱动对应的发光器件120点亮(即，所有的像素电路结构110通过扫描对应的像素单元100以驱动像素单元100对应的发光器件120点亮)，此时所有的超声波接收电路结构300可控制对应的超声波接收器200开启以使其进入等待接收信号状态。应说明的是，当该实施例中所描述的显示屏被触摸时，该显示屏的集成电路(Integrated Circuit，IC)可接收到显示屏的触摸信号，并在接收到该触摸信号时控制所有的像素电路结构110给对应的发光器件120提供驱动电流，驱动对应的发光器件120点亮。
另外，在手指触摸该手机的显示屏时，该显示屏的IC还可触发超声波发射器400进行超声发射，当该发射的超声波打在与该手机的显示屏接触的手指时，将会产生反射波。当超声波接收器200接收到该反射波时，可使用该反射波测量来形成指纹图像。例如，超声波接收器200接收到的对应指纹的谷和脊的位置处的反射波的震动强度有差异，根据该电信号可判断指纹中谷和脊的位置。然后，该手机内置的程序或显示屏可对该指纹图像进行验证，并在验证成功后解锁手机。由此，能够通过将超声波接收器对应设置在每个像素单元中，以实现全屏指纹识别，且每个像素单元都具有一个超声波接收器，可以极大地提高识别的准确率。此外，本公开实施例中，将超声波接收器的超声波接收电路结构集成到发光器件的驱动电路之中，共用像素电路结构的一部分电路来实现对超声波接收器的开启控制或超声波接收器的电信号输出控制，降低了电路的复杂度和电路规模，同时也可以降低模组的尺寸。
例如，本公开的实施例中，超声波接收器接收的超声波信号包括反射波信号，但不限于此。例如，超声波接收器接收的超声波信号还可包括超声波发射器发射的超声波信号。例如，因为超声波发射器发射的超声波信号与反 射波信号到达超声波接收器的时间不同，可以通过导出的电信号对这两种波进行区分。
在本公开的其他实施例中，当用户需要使用该实施例中所描述的手机时，还可先通过按压手机上的唤醒按键来点亮屏幕，以使超声波接收电路结构300控制超声波接收器200开启以使其进入等待接收信号状态。例如，当用户按压手机上的唤醒按键时，所有的像素电路结构110可给对应的发光器件120提供驱动电流，驱动对应的发光器件120点亮，此时所有的超声波接收电路结构300可控制对应的超声波接收器200开启以使其进入等待接收信号状态。当然在本公开的其他实施例中，还可以使用其他方式点亮屏幕，例如应用程序的触发，如手机的来电，或者语音触发等等。
例如，为了防止信号干扰及避免用户误操作导致超声波发射器400启动工作，在扫描每个像素单元100已点亮显示屏后，该显示屏可获取用户的触发显示屏的触发次数和触发时间，并根据触发次数和触发时间判断满足开启条件时，控制超声波发射器开启。例如，开启条件可根据实际情况进行设定，例如，开启条件可为连续两次或三次触发显示屏，且每次触发显示屏的时间不超过1秒。
例如，以上述的手机作为本公开的实施例提供的显示屏的阵列基板的载体为例来进行说明。例如，在用户通过按压手机上的唤醒按键来点亮屏幕，以使超声波接收电路结构300控制超声波接收器200开启以使其进入等待接收信号状态之后，如果用户利用手指连续短时间(例如，不超过1秒)触发该手机的显示屏3次，显示屏则会判断满足超声波发射器400的开启条件，此时，显示屏的IC可控制超声波发射器400进行超声发射工作，以利用超声波指纹识别传感器原理对手指指纹进行识别。
在本公开的其他实施例中，在扫描每个像素单元100以点亮显示屏后，如果显示屏被手指持续按压预设时间，超声波发射器400也可被触发。例如，预设时间可根据实际情况进行设定，例如，预设时间可以是3秒、4秒或5秒等。
例如，如图2A所示，像素电路结构110可包括第一晶体管T1、第二晶体管T2。例如，像素电路结构110还包括存储电容C。超声波接收电路结构300可包括：第三晶体管T3。
例如，第一晶体管T1的控制端与栅线GT相连，第一晶体管T1的第一端与数据线SL相连。
第二晶体管T2的控制端与第一晶体管T1的第二端相连，第二晶体管T2的第一端与电源Vee相连，且第二晶体管T2的第二端与发光器件120的第一电极(例如为阳极)相连。第二晶体管T2的第一端通过第一电压信号线L1与电源Vee相连。例如，发光器件120的第二电极(例如为阴极)与第二电压信号线L2相连。例如，第一电压信号线L1被配置为提供第一电压信号。例如，第二电压信号线L2被配置为提供第二电压信号。例如，第一电压信号大于第二电压信号，但不限于此。例如，第二电压信号为参考电压Vref1，例如，参考电压Vref1为接地电压。
本公开的实施例中，在其他像素电路结构中，第一电极可为阴极，相应地，第一电极可为阳极。
例如，如图2A所示，存储电容C的第一端与第二晶体管T2的控制端相连，存储电容C的第二端与第二晶体管T2的第一端相连。或者说，存储电容C的第二端与第一电压信号线L1相连。
例如，如图2A所示，第三晶体管T3的控制端与发光器件120的第一电极相连，第三晶体管T3的第一端与数据线SL相连，第三晶体管T3的第二端与超声波接收器200相连。例如，第三晶体管T3的第二端与超声波接收器200的第一电极相连。例如，如图2A所示，超声波接收器200的第二电极与信号输出线L3相连。例如，信号输出线L3可与数据线SL位于同一层，且与数据线SL彼此绝缘。
需要说明的是，该实施例中所描述的第一晶体管T1、第二晶体管T2和第三晶体管T3均可为薄膜晶体管。例如，第一晶体管T1、第二晶体管T2和第三晶体管T3可在栅信号为高电平时打开。例如，电源Vee提供高电平信号。
例如，如图2A和2B所示，为了便于对本公开的实施例的描述，以手机作为本公开的实施例提供的显示屏的阵列基板的载体为例来进行说明。例如，当用户通过按压手机上的唤醒按键来点亮显示屏时，该显示屏的IC可控制像素单元100中的栅线GT输出高电平信号，像素单元100中的电源Vee产生电压(如图2B所示)，此时，第一晶体管T1导通，进而使得第二晶体管 T2导通，以使发光器件120上电点亮。当发光器件120上电点亮时，可将电源Vee产生的电压施加在第三晶体管T3的控制端，从而使第三晶体管T3导通为超声波接收器200供电，以使超声波接收器200开启进入等待接收信号状态。当超声波接收器200接收到超声波信号时，超声波接收器200可根据接收到的超声波信号产生电信号，该电信号可通过信号输出线L3输出。例如，信号输出线L3可与指纹识别模块或纹识别电路相连，以实现指纹识别功能。
另外，当第一晶体管T1和第二晶体管T2导通时，存储电容C开始充电，以存储数据信号，当像素单元100的数据线SL信号结束后，储存电容C可开始放电，以保持第二晶体管T2控制端的电压，从而为像素单元100的发光器件120和超声波接收器200提供源源不断地电流，直到存储电容C中的电量耗尽。
需要说明的是，当以手机作为本公开的实施例提供的显示屏的阵列基板的载体时，该实施例中所描述的栅线GT还可由手指触摸该手机的显示屏触发。
例如，本公开的一些实施例中，第三晶体管T3被开启时，超声波接收器产生的电信号可被输出。
例如，在其他的实施例中，可在图2A的基础上进行调整，将第三晶体管T3的控制端与发光器件120的第一电极相连调整为第三晶体管T3的控制端与发光器件120的第二电极相连，除此之外，均可参照图2A，在此不再赘述。
图3A为本公开另一实施例提供的阵列基板的电路结构示意图。如图3A所示，与图2A所示的结构相比，超声波接收器200与参考电压线L4相连，例如，参考电压线L4被配置为提供参考电压Vref2。
例如，本公开的实施例中，参考电压Vref1或者参考电压Vref2可为固定电压。
例如，同的像素单元可采用相同的数据信号，但不限于此。当不同的像素单元采用不同的数据信号时，可通过算法来对输出的电信号进行补偿，以使得各超声波接收器200具有相同的基准电压，但不限于此。
图3B是根据本公开一个实施例的像素单元的时序图。例如，该时序可 应用与图3A所示的阵列基板。
结合图3A和图3B，一帧时间内，当栅信号处于高电平的阶段(T1阶段，信号输入阶段)时，在数据信号被施加到第二晶体管T2的栅极，在维持阶段(T2阶段)，不施加数据信号，此阶段，数据线SL可作为超声波接收器200的信号输出线，超声波接收器200产生的电信号被输出后可通过指纹识别电路进行指纹识别。图3A所示的结构，利用数据线SL作为超声波接收器200的信号输出线，更进一步的利用了像素电路结构。
例如，如图4所示，上述的显示屏及其阵列基板还可包括衬底基板500(例如，玻璃的衬底基板)、形成在衬底基板500之上的薄膜晶体管(TFT)层600、形成在TFT层600之上的超声波发射器层700、形成在超声波发射器层之上的超声波接收器层800和形成在超声波接收器层800之上的发光器件层900。
例如，像素电路结构110(图4未示出，参照图1)、超声波接收电路结构300(图4未示出，参照图1)可形成在TFT层600之中，超声波发射器400(图4未示出)可形成在超声波发射器层700之中，超声波接收器200可形成在超声波接收器层800之中，发光器件120可形成在发光器件层900之中。
综上，根据本公开实施例提供的显示屏的阵列基板，通过像素电路结构给发光器件提供驱动电流以驱动发光器件点亮，以使超声波接收电路结构在发光器件被点亮时控制超声波接收器开启或使得超声波接收电路结构被开启以传输超声波接收器200根据接收到的超声波信号而产生的电信号，并在超声波发射器发射超声波时，利用超声波指纹识别传感器原理对手指指纹进行识别。由此，能够通过将超声波接收器对应设置在每个像素单元中，以实现全屏指纹识别。此外，本公开实施例中，将超声波接收器的超声波接收电路结构集成到发光器件的驱动电路之中，共用驱动电路的一部分电路来实现对超声波接收器的开启控制，降低了电路的复杂度和电路规模，同时也可以降低模组的尺寸。同时，在本公开实施例中，每个像素单元都具有一个超声波接收器，可以极大地提高识别的准确率。
本公开的至少一实施例还提供一种显示屏，其包括上述任一显示屏的阵列基板。
在本公开的一个实施例中，上述显示屏还包括：指纹识别模块，用于根据超声波接收器接收到的超声波信号或超声波接收器输出的电信号进行指纹识别。
在本公开的一个实施例中，上述显示屏还包括：触发识别模块和开启模块，触发识别模块被配置为获取用户的触发显示屏的触发次数和触发时间；开启模块被配置为根据触发次数和触发时间判断满足开启条件时，控制超声波发射器开启。
在本公开的一个实施例中，当每次的触发时间小于预设时间阈值，且触发次数等于预设次数阈值时，开启模块判断满足开启条件。例如，预设时间阈值和预设次数阈值均可根据实际情况进行设定。
需要说明的是，本公开实施例的显示屏中未披露的细节，请参照本公开实施例的显示屏的阵列基板中所披露的细节，在此不再赘述。
综上，本公开实施例的显示屏，通过上述显示屏的阵列基板，能够实现全屏指纹识别，且通过将超声波接收器的超声波接收电路结构集成到发光器件的驱动电路之中，既可降低电路的复杂度和电路规模，又可降低模组的尺寸，另外，每个像素单元都具有一个超声波接收器，可以极大地提高识别的准确率。
为了实现上述实施例，本公开还提供一种电子设备，其包括上述任一显示屏。
本公开实施例提供的电子设备，通过上述显示屏，能够实现全屏指纹识别，且通过将超声波接收器的超声波接收电路结构集成到发光器件的驱动电路(像素电路结构)之中，既可降低电路的复杂度和电路规模，又可降低模组的尺寸，另外，每个像素单元都具有一个超声波接收器，可以极大地提高识别的准确率。
如图4所示，在发光器件120的远离衬底基板500的一侧还设置有偏光片001。偏光片001可起到减少显示屏中的金属反射的作用。
例如，本公开的实施例中，发光器件120可包括第一电极、第二电极和位于第一电极和第二电极之间的发光功能层。
图5是根据本公开一个实施例的显示屏的指纹识别方法的流程图。
如图5所示，本公开实施例的显示屏的指纹识别方法，包括以下步骤。
S1，生成栅信号和数据信号，通过像素电路结构将发光器件点亮。
S2，在发光器件被点亮之后，控制发光器件对应的超声波接收器开启。
S3，控制超声波发射器发射超声波。
S4，获取超声波接收器接收到的超声波信号。
S5，根据超声波接收器接收到的超声波信号进行指纹识别。
在本公开的一个实施例中，在生成栅线信号之前，该方法还包括：判断是否满足显示屏的点亮条件；如果满足点亮条件，则生成栅线信号。
例如，本公开的一个实施例中，指纹识别方法包括以下步骤：生成栅信号和数据信号，通过所述像素电路结构将所述发光器件点亮；在所述发光器件被点亮时，控制所述超声波接收器开启，以使超声波接收器根据接收到的超声波信号产生电信号；控制所述超声波发射器发射超声波；通过所述超声波接收电路结构获取所述超声波接收器输出的电信号；以及根据所述超声波接收器输出的电信号进行指纹识别。
在本公开的一个实施例中，在控制超声波发射器发射超声波之前，该方法还包括：获取用户的触发显示屏的触发次数和触发时间；根据触发次数和触发时间判断满足开启条件时，控制超声波发射器发射超声波。
需要说明的是，本公开实施例提供的显示屏的指纹识别方法中未披露的细节，请参照本公开实施例提供的显示屏的阵列基板中所披露的细节，在此不再赘述。
综上，根据本公开实施例的显示屏的指纹识别方法，生成栅信号和数据信号，通过像素电路结构将发光器件点亮，在发光器件被点亮之后，控制发光器件对应的超声波接收器开启，并控制超声波发射器发射超声波，然后获取超声波接收器接收到的超声波信号，并根据超声波接收器接收到的超声波信号进行指纹识别。由此，能够实现全屏指纹识别，且每个像素单元都具有一个超声波接收器，可以极大地提高识别的准确率。
图6是根据本公开一个实施例的显示屏的方框示意图。
如图6所示，本公开实施例提供的显示屏，包括：多个显示单元10、超声波发射器400和控制器30。例如，每个显示单元10包括一个发光器件120和一个超声波接收器200；超声波发射器400被配置为发射超声波。控制器30被配置为根据超声波接收器200接收到的超声波信号进行指纹识别。
在本公开的一个实施例中，如图4所示，上述显示屏还可包括：衬底基板500(例如，玻璃基板)、形成在衬底基板500之上的薄膜晶体管(Thin Film Transistor，TFT)层600、形成在TFT层之上的超声波发射器层700、形成在超声波发射器层700之上的超声波接收器层800和形成在超声波接收器层800之上的发光器件层900。
例如，超声波发射器400(图4未示出)形成在超声波发射器层700之中，超声波接收器200形成在超声波接收器层800之中，发光器件120形成在发光器件层900之中。
需要说明的是，本公开实施例提供的显示屏中未披露的细节，请参照本公开实施例提供的显示屏的阵列基板中所披露的细节，在此不再赘述。
综上，本公开实施例提供的显示屏，利用每个显示单元中的发光器件和超声波接收器，以及超声波发射器和控制器，对手指指纹进行识别。由此，能够实现全屏指纹识别，且每个显示单元都具有一个超声波接收器，可以极大地提高识别的准确率。
图7是根据本公开另一个实施例的显示屏的指纹识别方法的流程图。
如图7所示，本公开实施例的显示屏的指纹识别方法，包括以下步骤。
S101，控制显示屏发光，并控制超声波接收器开启。
S102，控制超声波发射器发射超声波。
S103，获取超声波接收器接收的超声波信号。
S104，根据超声波接收器接收到的超声波信号进行指纹识别。
例如，本公开的另一实施例中，显示屏的指纹识别方法包括：控制所述显示屏发光，并控制所述超声波接收器开启；控制所述超声波发射器发射超声波；获取所述超声波接收器根据接收到的超声波信号输出的电信号；根据所述超声波接收器输出的所述电信号进行指纹识别。
需要说明的是，本公开实施例提供的显示屏的指纹识别方法中未披露的细节，请参照本公开实施例提供的显示屏的阵列基板中所披露的细节，具体这里不再赘述。
综上，根据本公开实施例提供的显示屏的指纹识别方法，首先控制显示屏发光，并控制超声波接收器开启，然后控制超声波发射器发射超声波，并获取超声波接收器接收的超声波信号，最后根据超声波接收器接收到的超声 波信号进行指纹识别。由此，能够实现全屏指纹识别，且每个显示单元都具有一个超声波接收器，可以极大地提高识别的准确率。
需要说明的是，本公开的实施例中采用的晶体管均可以为薄膜晶体管或场效应晶体管或其他特性相同的开关器件。这里采用的晶体管的源极、漏极在结构上可以是对称的，所以其源极、漏极在结构上可以是没有区别的。在本公开的实施例中，为了区分晶体管除栅极之外的两极，直接描述了其中一极为第一端，另一极为第二端，所以本公开实施例中全部或部分晶体管的第一端和第二端根据需要是可以互换的。例如，本公开实施例所述的晶体管的第一端可以为源极，第二端可以为漏极；或者，晶体管的第一端为漏极，第二端为源极。
以上所述，仅为本公开的具体实施方式，但本公开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公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (27)

  1. 一种显示屏的阵列基板，包括：超声波发射器和多个像素单元；
    其中，所述超声波发射器被配置为发射超声波；
    所述多个像素单元的每个包括像素电路结构、发光器件、超声波接收器和超声波接收电路结构；
    所述像素电路结构被配置为给所述发光器件提供驱动电流以驱动所述发光器件点亮；
    所述超声波接收器被配置为接收超声波信号；
    所述超声波接收电路结构与所述像素电路结构相连，并被配置为在所述发光器件被点亮时控制所述超声波接收器开启。
  2. 如权利要求1所述的显示屏的阵列基板，还包括栅线、数据线、第一电压信号线和第二电压信号线，其中，
    所述栅线、所述数据线、所述第一电压信号线和所述第二电压信号线分别与所述像素电路结构连接以分别提供扫描信号、数据信号、第一电压信号和第二电压信号；
    所述像素电路结构包括：
    第一晶体管，所述第一晶体管的控制端与所述栅线相连，所述第一晶体管的第一端与所述数据线相连；以及
    第二晶体管，所述第二晶体管的控制端与所述第一晶体管的第二端相连，所述第二晶体管的第一端与所述第一电压信号线相连，且所述第二晶体管的第二端与所述发光器件的第一电极相连，所述发光器件的第二电极与所述第二电压信号线相连；所述第二晶体管在所述扫描信号及所述数据信号的控制下输出驱动电流以驱动所述发光器件发光。
  3. 如权利要求2所述的显示屏的阵列基板，其中，所述第一电压信号大于所述第二电压信号。
  4. 如权利要求3所述的显示屏的阵列基板，其中，所述第二电压信号为接地电压。
  5. 如权利要求2-4任一项所述的显示屏的阵列基板，其中，所述像素电路结构还包括存储电容，所述存储电容的第一端与所述第二晶体管的控制端相连，所述存储电容的第二端与所述第二晶体管的第一端或与所述第一电压 信号线相连。
  6. 如权利要求2-5任一项所述的显示屏的阵列基板，其中，所述超声波接收电路结构包括：
    第三晶体管，所述第三晶体管的控制端与所述发光器件的第一电极相连，所述第三晶体管的第一端与所述数据线相连，所述第三晶体管的第二端与所述超声波接收器的第一电极相连。
  7. 如权利要求6所述的显示屏的阵列基板，其中，所述超声波接收器的第二电极与参考电压端相连。
  8. 如权利要求6所述的显示屏的阵列基板，其中，所述超声波接收器的第二电极与信号输出线相连。
  9. 如权利要求1-8任一项所述的显示屏的阵列基板，包括：
    衬底基板；
    形成在所述衬底基板之上的薄膜晶体管(TFT)层；
    形成在所述TFT层之上的超声波发射器层；
    形成在所述超声波发射器层之上的超声波接收器层；以及
    形成在所述超声波接收器层之上的发光器件层；
    其中，所述像素电路结构、所述超声波接收电路结构形成在所述TFT层之中，所述超声波发射器形成在所述超声波发射器层之中，所述超声波接收器形成在所述超声波接收器层之中，所述发光器件形成在所述发光器件层之中。
  10. 一种显示屏，包括如权利要求1-9任一项所述的阵列基板。
  11. 如权利要求10所述的显示屏，还包括：指纹识别模块，其中，所述指纹识别模块被配置为根据所述超声波接收器接收到的超声波信号进行指纹识别。
  12. 如权利要求11所述的显示屏，还包括：
    触发识别模块，被配置为获取用户的触发所述显示屏的触发次数和触发时间；以及
    开启模块，被配置为根据所述触发次数和所述触发时间判断满足开启条件时，控制所述超声波发射器开启。
  13. 如权利要求12所述的显示屏，其中，当每次的所述触发时间小于预 设时间阈值，且触发次数等于预设次数阈值时，所述开启模块判断满足开启条件。
  14. 一种电子设备，包括如权利要求10-13任一项所述的显示屏。
  15. 一种基于如权利要求10-13任一项所述的显示屏的指纹识别方法，包括：
    生成栅信号和数据信号，通过所述像素电路结构将所述发光器件点亮；
    在所述发光器件被点亮时，控制所述超声波接收器开启，以使超声波接收器根据接收到的超声波信号产生电信号；
    控制所述超声波发射器发射超声波；
    通过所述超声波接收电路结构获取所述超声波接收器输出的电信号；以及
    根据所述超声波接收器输出的电信号进行指纹识别。
  16. 如权利要求15所述的显示屏的指纹识别方法，在所述生成栅信号和数据信号之前，还包括：
    判断是否满足所述显示屏的点亮条件；
    如果满足所述点亮条件，则生成所述栅信号和数据信号。
  17. 如权利要求15所述的显示屏的指纹识别方法，在控制所述超声波发射器发射超声波之前，还包括：
    获取用户的触发所述显示屏的触发次数和触发时间；以及
    根据所述触发次数和所述触发时间判断满足开启条件时，控制所述超声波发射器发射超声波。
  18. 一种显示屏，包括：
    多个显示单元，所述多个显示单元的每个包括发光器件和超声波接收器；
    超声波发射器，被配置为发射超声波；以及
    控制器，被配置为根据所述超声波接收器接收到的超声波信号进行指纹识别。
  19. 如权利要求18所述的显示屏，其中，所述超声波接收器被配置为接收超声波信号并根据接收到的超声波信号产生电信号；所述显示单元还包括像素电路结构和超声波接收电路结构，所述超声波接收电路结构与所述像素电路结构相连，并被配置为在所述发光器件被点亮时被开启，以输出所述电 信号。
  20. 如权利要求19所述的显示屏，还包括栅线、数据线、第一电压信号线和第二电压信号线，其中，
    所述栅线、所述数据线、所述第一电压信号线和所述第二电压信号线分别与所述像素电路结构连接以提供扫描信号、数据信号、第一电压信号和第二电压信号；
    所述像素电路结构包括：
    第一晶体管，所述第一晶体管的控制端与所述栅线相连，所述第一晶体管的第一端与所述数据线相连；以及
    第二晶体管，所述第二晶体管的控制端与所述第一晶体管的第二端相连，所述第二晶体管的第一端与所述第一电压信号线相连，且所述第二晶体管的第二端与所述发光器件的第一电极相连，所述发光器件的第二电极与所述第二电压信号线相连；所述第二晶体管在所述扫描信号及所述数据信号的控制下输出驱动电流以驱动所述发光器件发光。
  21. 如权利要求20所述的显示屏，其中，所述像素电路结构还包括存储电容，所述存储电容的第一端与所述第二晶体管的控制端相连，所述存储电容的第二端与所述第二晶体管的第一端或与所述第一电压信号线相连。
  22. 如权利要求20所述的显示屏，其中，所述超声波接收电路结构包括：
    第三晶体管，所述第三晶体管的控制端与所述发光器件的第一电极相连，所述第三晶体管的第一端与所述数据线相连，所述第三晶体管的第二端与所述超声波接收器的第一电极相连。
  23. 如权利要求22所述的显示屏，其中，所述超声波接收器的第二电极与参考电压端相连。
  24. 如权利要求22所述的显示屏，其中，所述超声波接收器的第二电极与信号输出线相连。
  25. 如权利要求18-24任一项所述的显示屏，所述显示屏包括：
    衬底基板；
    形成在所述衬底基板之上的薄膜晶体管(TFT)层；
    形成在所述TFT层之上的超声波发射器层；
    形成在所述超声波发射器层之上的超声波接收器层；以及
    形成在所述超声波接收器层之上的发光器件层；
    其中，所述超声波发射器形成在所述超声波发射器层之中，所述超声波接收器形成在所述超声波接收器层之中，所述发光器件形成在所述发光器件层之中。
  26. 一种如权利要求18-24任一项所述的显示屏的指纹识别方法，包括：
    控制所述显示屏发光，并控制所述超声波接收器开启；
    控制所述超声波发射器发射超声波；
    获取所述超声波接收器接收的超声波信号；以及
    根据所述超声波接收器接收到的超声波信号进行指纹识别。
  27. 一种如权利要求18-24任一项所述的显示屏的指纹识别方法，包括：
    控制所述显示屏发光，并控制所述超声波接收器开启；
    控制所述超声波发射器发射超声波；
    获取所述超声波接收器根据接收到的超声波信号输出的电信号；以及
    根据所述超声波接收器输出的所述电信号进行指纹识别。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111079719A (zh) * 2020-01-19 2020-04-28 成都芯曌科技有限公司 一种超声波电路及指纹识别传感器和电子设备
CN113239777A (zh) * 2021-05-10 2021-08-10 北京集创北方科技股份有限公司 指纹识别模组的唤醒方法、指纹识别模组和电子装置
CN114442807A (zh) * 2022-01-18 2022-05-06 惠州Tcl移动通信有限公司 超声波发生组件及电子设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108805044B (zh) * 2018-05-25 2021-03-16 京东方科技集团股份有限公司 显示屏及其阵列基板和指纹识别方法、电子设备
CN109598233B (zh) * 2018-12-04 2021-03-16 武汉华星光电半导体显示技术有限公司 具有指纹辨识功能的显示装置
WO2020232595A1 (zh) * 2019-05-20 2020-11-26 京东方科技集团股份有限公司 像素单路及其驱动方法、像素单元和显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021487A1 (en) * 2007-07-18 2009-01-22 Quanta Computer Inc. Electronic apparatus equipped with touch panel capable of identifying fingerprint
CN106951130A (zh) * 2017-03-28 2017-07-14 京东方科技集团股份有限公司 一种阵列基板、显示面板、显示设备及阵列基板制备方法
CN107193430A (zh) * 2017-04-13 2017-09-22 上海与德科技有限公司 阵列基板、显示模组、电子设备、指纹识别方法及装置
CN107195661A (zh) * 2017-05-31 2017-09-22 北京小米移动软件有限公司 Oled面板
CN107220630A (zh) * 2017-06-07 2017-09-29 京东方科技集团股份有限公司 显示基板及其驱动方法、显示装置
CN207182329U (zh) * 2017-09-12 2018-04-03 南昌欧菲生物识别技术有限公司 电子设备
CN108805044A (zh) * 2018-05-25 2018-11-13 京东方科技集团股份有限公司 显示屏及其阵列基板和指纹识别方法、电子设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI408437B (zh) * 2010-09-09 2013-09-11 液晶顯示器
WO2014018115A1 (en) * 2012-07-26 2014-01-30 Changello Enterprise Llc Ultrasound-based force sensing of inputs
US9244581B2 (en) * 2013-09-30 2016-01-26 Synaptics Incorporated Modulated power supply for reduced parasitic capacitance
CN105046243B (zh) * 2015-08-25 2019-12-20 业成光电（深圳）有限公司 显示装置
CN107134259B (zh) * 2017-06-28 2019-04-30 京东方科技集团股份有限公司 像素电路、驱动方法、显示模组、驱动方法和显示装置
CN107194384B (zh) * 2017-07-13 2019-09-06 京东方科技集团股份有限公司 显示基板及其驱动方法、显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021487A1 (en) * 2007-07-18 2009-01-22 Quanta Computer Inc. Electronic apparatus equipped with touch panel capable of identifying fingerprint
CN106951130A (zh) * 2017-03-28 2017-07-14 京东方科技集团股份有限公司 一种阵列基板、显示面板、显示设备及阵列基板制备方法
CN107193430A (zh) * 2017-04-13 2017-09-22 上海与德科技有限公司 阵列基板、显示模组、电子设备、指纹识别方法及装置
CN107195661A (zh) * 2017-05-31 2017-09-22 北京小米移动软件有限公司 Oled面板
CN107220630A (zh) * 2017-06-07 2017-09-29 京东方科技集团股份有限公司 显示基板及其驱动方法、显示装置
CN207182329U (zh) * 2017-09-12 2018-04-03 南昌欧菲生物识别技术有限公司 电子设备
CN108805044A (zh) * 2018-05-25 2018-11-13 京东方科技集团股份有限公司 显示屏及其阵列基板和指纹识别方法、电子设备

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111079719A (zh) * 2020-01-19 2020-04-28 成都芯曌科技有限公司 一种超声波电路及指纹识别传感器和电子设备
CN113239777A (zh) * 2021-05-10 2021-08-10 北京集创北方科技股份有限公司 指纹识别模组的唤醒方法、指纹识别模组和电子装置
CN114442807A (zh) * 2022-01-18 2022-05-06 惠州Tcl移动通信有限公司 超声波发生组件及电子设备
CN114442807B (zh) * 2022-01-18 2024-01-19 惠州Tcl移动通信有限公司 超声波发生组件及电子设备

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