CN108805044B - Display screen, array substrate thereof, fingerprint identification method and electronic equipment - Google Patents
Display screen, array substrate thereof, fingerprint identification method and electronic equipment Download PDFInfo
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- CN108805044B CN108805044B CN201810515246.0A CN201810515246A CN108805044B CN 108805044 B CN108805044 B CN 108805044B CN 201810515246 A CN201810515246 A CN 201810515246A CN 108805044 B CN108805044 B CN 108805044B
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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
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- 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
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Abstract
The invention discloses a display screen, an array substrate thereof, a fingerprint identification method and electronic equipment, wherein the array substrate comprises: the device comprises a plurality of pixel units, a light emitting device and a control module, wherein each pixel unit comprises a driving module, at least one ultrasonic receiver of the light emitting device and the control module, and the driving module is used for providing driving current for the light emitting device to drive the light emitting device to light; the ultrasonic receiver is used for receiving ultrasonic signals; the control module controls the ultrasonic receiver to be started when the light-emitting device is lightened; and the ultrasonic transmitter transmits ultrasonic waves. Therefore, full-screen fingerprint identification can be realized, the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, the complexity and the circuit scale of the circuit can be reduced, the size of the module can be reduced, in addition, each pixel unit is provided with the ultrasonic receiver, and the identification accuracy can be greatly improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a display screen, an array substrate of the display screen, a fingerprint identification method and electronic equipment.
Background
At present, many cell-phones on the market have all added the fingerprint identification function, and the fingerprint identification function can provide the fingerprint unblock, functions such as fingerprint encryption, however because screen module thickness leads to the sensor to collect enough useful signals, capacitanc fingerprint identification sensor can't separate the fingerprint that the machine screen discernment was pressed on the screen.
Among the correlation technique, infrared light fingerprint identification sensor and ultrasonic fingerprint identification sensor come the fingerprint line of discernment on the screen, have strong enough penetration performance, nevertheless just mean higher consumption and bigger module volume. At present, companies such as European Fidelity light that provide ultrasonic fingerprint identification module encapsulation for the high pass still can not shrink the volume to small enough, and discernment rate of accuracy and speed also need promote by a wide margin.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above.
Therefore, a first objective of the present invention is to provide an array substrate of a display screen, which can realize full-screen fingerprint identification, and by integrating a control module of an ultrasonic receiver into a driving circuit of a light emitting device, the complexity and the scale of the circuit can be reduced, and the size of a module can be reduced.
A second object of the invention is to provide a display screen.
A third object of the invention is to propose an electronic device.
The fourth purpose of the invention is to provide a fingerprint identification method of the display screen.
A fifth object of the invention is to propose another display screen.
A sixth object of the present invention is to provide another fingerprint recognition method for a display screen.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides an array substrate for a display panel, including: a plurality of pixel cells, wherein each of the pixel cells comprises a driving module, a light emitting device, at least one ultrasonic receiver, and a control module: the driving module is used for providing a driving current for the light-emitting device to drive the light-emitting device to light; the ultrasonic receiver is used for receiving ultrasonic signals; the control module controls the ultrasonic receiver to be started when the light-emitting device is lightened; an ultrasonic transmitter that transmits ultrasonic waves.
According to the array substrate of the display screen, the driving module is used for providing the driving current for the light-emitting device to drive the light-emitting device to be lightened, so that the control module controls the ultrasonic receiver to be started when the light-emitting device is lightened, and when the ultrasonic transmitter transmits ultrasonic waves, the principle of the ultrasonic fingerprint identification sensor is used for identifying the finger fingerprints. Therefore, full-screen fingerprint identification can be realized by correspondingly arranging the ultrasonic receiver in each pixel unit. In addition, in the embodiment of the invention, the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, and a part of circuits of the drive circuit are shared to realize the starting control of the ultrasonic receiver, so that the complexity and the circuit scale of the circuit are reduced, and the size of a module can be reduced. Meanwhile, in the embodiment of the invention, each pixel unit is provided with the ultrasonic receiver, so that the identification accuracy can be greatly improved.
In addition, the array substrate of the display panel according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the present invention, the driving module includes: the control end of the first transistor is connected with the data line, and the first end of the first transistor is connected with the scanning line; and a control terminal of the second transistor is connected to the second terminal of the first transistor, a first terminal of the second transistor is connected to a power supply, and a second terminal of the second transistor is connected to an anode of the light emitting device, wherein a cathode of the light emitting device is grounded.
In one embodiment of the invention, the control module comprises: a first end of the storage capacitor is connected with the control end of the second transistor, and a second end of the storage capacitor is connected with the first end of the second transistor; and a control end of the third transistor is connected with the cathode of the light-emitting device, a first end of the third transistor is connected with the scanning line, and a second end of the third transistor is connected with the ultrasonic receiver.
In one embodiment of the present invention, the array substrate includes: a substrate; a Thin Film Transistor (TFT) layer formed over the substrate; an ITO (Indium Tin Oxide) layer formed on the TFT layer; an ultrasonic receiver layer formed over the ITO layer; a light emitting device layer formed over the ultrasonic receiver layer; wherein the driving module and the control module are formed in the TFT layer, the ultrasonic transmitter is formed in the ITO 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 order to achieve the above object, a second embodiment of the present invention provides a display screen, including: the array substrate of the display screen of the embodiment of the first aspect of the invention.
According to the display screen provided by the embodiment of the invention, full-screen fingerprint identification can be realized through the array substrate of the display screen, and the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, so that the complexity and the circuit scale of the circuit can be reduced, the size of a module can be reduced, and in addition, each pixel unit is provided with the ultrasonic receiver, so that the identification accuracy can be greatly improved.
In addition, the display screen proposed according to the above embodiment of the present invention may further have the following additional technical features:
in an embodiment of the present invention, the display screen further includes: and the fingerprint identification module is used for carrying out fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver.
In an embodiment of the present invention, the display screen further includes: the trigger identification module is used for acquiring the triggering times and triggering time of the user for triggering the display screen; and the starting module is used for controlling the ultrasonic transmitter to be started when judging that the starting condition is met according to the triggering times and the triggering time.
In an embodiment of the present invention, when the triggering time is less than a preset time threshold each time and the triggering time is equal to a preset time threshold, the starting module determines that the starting condition is satisfied.
To achieve the above object, an embodiment of a third aspect of the present invention provides an electronic device including: a display screen in accordance with an embodiment of the second aspect of the invention.
According to the display device provided by the embodiment of the invention, full-screen fingerprint identification can be realized through the display screen, and the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, so that the complexity and the circuit scale of the circuit can be reduced, the size of the module can be reduced, and in addition, each pixel unit is provided with the ultrasonic receiver, so that the identification accuracy can be greatly improved.
In order to achieve the above object, a fourth aspect of the present invention provides a method for identifying a fingerprint of a display screen, including the following steps: generating a data line signal, and lighting the light emitting device through the driving module; after the light-emitting device is lightened, controlling an ultrasonic receiver corresponding to the light-emitting device to be started; controlling the ultrasonic transmitter to transmit ultrasonic waves; acquiring an ultrasonic signal received by the ultrasonic receiver; and fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver.
According to the fingerprint identification method of the display screen, the data line signal is generated, the light-emitting device is lightened through the driving module, after the light-emitting device is lightened, the ultrasonic receiver corresponding to the light-emitting device is controlled to be started, the ultrasonic transmitter is controlled to transmit ultrasonic waves, then the ultrasonic signals received by the ultrasonic receiver are obtained, and fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver. Thereby, full-screen fingerprint identification can be realized.
In addition, the fingerprint identification method for the display screen according to the embodiment of the present invention may further have the following additional technical features:
in an embodiment of the present invention, before the generating the data line signal, the method further includes: judging whether the lighting condition of the display screen is met or not; generating the data line signal if the lighting condition is satisfied.
In an embodiment of the present invention, before the controlling the ultrasonic transmitter to transmit the ultrasonic wave, the method further includes: acquiring the triggering times and triggering time of a user for triggering the display screen; and controlling the ultrasonic transmitter to transmit ultrasonic waves when the starting condition is judged to be met according to the triggering times and the triggering time.
In order to achieve the above object, a fifth embodiment of the present invention provides another display screen, including: a plurality of display units, each of the display units including a light emitting device and an ultrasonic receiver; an ultrasonic transmitter for transmitting ultrasonic waves; and the controller is used for carrying out fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver.
The display screen of the embodiment of the invention utilizes the light-emitting device and the ultrasonic receiver in each display unit, and the ultrasonic transmitter and the controller to identify the finger fingerprint. Therefore, full-screen fingerprint identification can be realized, each display unit is provided with one ultrasonic receiver, and the identification accuracy can be greatly improved.
In addition, the display screen proposed according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the invention, the display screen comprises: a substrate; a Thin Film Transistor (TFT) layer formed over the substrate; an ITO layer formed over the TFT layer; an ultrasonic receiver layer formed over the ITO layer; a light emitting device layer formed over the ultrasonic receiver layer; wherein the ultrasonic transmitter is formed in the ITO 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 order to achieve the above object, a sixth embodiment of the present invention provides another display screen fingerprint identification method, including the following steps: controlling the display screen to emit light and controlling the ultrasonic receiver to be started; controlling the ultrasonic transmitter to transmit ultrasonic waves; acquiring an ultrasonic signal received by the ultrasonic receiver; and fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver.
According to the fingerprint identification method of the display screen, the display screen is controlled to emit light, the ultrasonic receiver is controlled to be started, the ultrasonic transmitter is controlled to transmit ultrasonic waves, ultrasonic signals received by the ultrasonic receiver are obtained, and finally fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver. Thereby, full-screen fingerprint identification can be realized.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic block diagram of an array substrate of a display panel according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a pixel cell according to one embodiment of the invention;
FIG. 3 is a timing diagram of a pixel cell according to one embodiment of the invention;
FIG. 4 is a schematic view of an array substrate of a display panel according to one embodiment of the present invention;
FIG. 5 is a flow diagram of a method for fingerprinting a display screen in accordance with one embodiment of the present invention;
FIG. 6 is a block schematic diagram of a display screen according to one embodiment of the invention; and
fig. 7 is a flowchart of a fingerprint recognition method of a display screen according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a display screen, an array substrate thereof, a fingerprint identification method and an electronic device according to an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of an array substrate of a display panel according to an embodiment of the present invention. It should be noted that the array substrate of the display screen in the embodiment of the present invention may be applied to a mobile terminal to implement full-screen fingerprint identification of the mobile terminal, where the mobile terminal may include a mobile phone, a tablet computer, a palmtop computer, and the like.
As shown in fig. 1, the array substrate of the display panel according to the embodiment of the present invention includes: a plurality of pixel cells 100, and an ultrasonic transmitter 400.
Each pixel unit 100 may include, among other things, a driving module 110, a light emitting device 120, at least one ultrasonic receiver 200, and a control module 300. It should be noted that when the at least one ultrasonic receiver 200 described in this embodiment is a plurality of ultrasonic receivers 200, the plurality of ultrasonic receivers 200 may be connected in series or in parallel.
Specifically, the driving module 110 is configured 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-LED (Light Emitting Diode).
Alternatively, the light emitting device 120 may also be a small pitch LED or a Micro-LED.
The ultrasonic receiver 200 is used to receive ultrasonic signals.
The control module 300 is used for controlling the ultrasonic receiver 200 to be turned on when the light emitting device 120 is lighted. It should be noted that the ultrasonic receiver 200 described in this embodiment may enter a signal waiting state after being turned on. Generally, when fingerprint identification is required to be performed on the display screen, the display screen needs to be in an illuminated state, so in the embodiment of the present invention, while the light emitting device 120 is illuminated, the ultrasonic receiver 200 is turned on to be in an operable state to wait for receiving the ultrasonic wave emitted by the ultrasonic transmitter.
The ultrasonic transmitter 400 is used to transmit ultrasonic waves.
Specifically, the ultrasonic transmitter 400 may perform ultrasonic transmission work when the display screen is touched by a finger, so as to identify the finger fingerprint by using the principle of the ultrasonic fingerprint identification sensor.
For convenience of description of the present invention, a mobile phone is taken as an example of the carrier of the array substrate of the display panel of the present invention. If the fingerprint screen-locking password is set in the mobile phone, when a user needs to use the mobile phone (for example, unlock the mobile phone to browse a webpage, play a game, enter a WeChat, etc.), the user may first touch the display screen of the mobile phone with a finger to control all the driving modules 110 to provide driving currents for the corresponding light-emitting devices 120 to drive the corresponding light-emitting devices 120 to light up (that is, all the driving modules 110 drive the light-emitting devices 120 corresponding to the pixel units 100 to light up by scanning the corresponding pixel units 100), and at this time, all the control modules 300 may control the corresponding ultrasonic receivers 200 to turn on to enable the corresponding ultrasonic receivers to enter a signal waiting state. It should be noted that, when the display screen described in this embodiment is touched, an Integrated Circuit (IC) of the display screen may receive a touch signal of the display screen, and control all the driving modules 110 to provide a driving current to the corresponding light emitting devices 120 when receiving the touch signal, so as to drive the corresponding light emitting devices 120 to light up.
In addition, when a finger touches the display screen of the mobile phone, the IC of the display screen may trigger the ultrasonic transmitter 400 to perform ultrasonic transmission, and when the transmitted ultrasonic wave hits the finger in contact with the display screen of the mobile phone, a reflected wave may be generated. When the ultrasonic receiver 200 receives the reflected wave, a fingerprint image may be formed using the reflected wave measurement. Then, a program or a display screen arranged in the mobile phone can verify the fingerprint image, and the mobile phone is unlocked after the fingerprint image is successfully verified. Therefore, the ultrasonic receiver is correspondingly arranged in each pixel unit, full-screen fingerprint identification is realized, each pixel unit is provided with one ultrasonic receiver, and the identification accuracy can be greatly improved. In addition, in the embodiment of the invention, the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, and a part of circuits of the drive circuit are shared to realize the starting control of the ultrasonic receiver, so that the complexity and the circuit scale of the circuit are reduced, and the size of a module can be reduced.
In other embodiments of the present invention, when a user needs to use the mobile phone described in this embodiment, the user may first press a wake-up button on the mobile phone to light up the screen, so that the control module 300 controls the ultrasonic receiver 200 to turn on to enter a signal waiting state. Specifically, when the user presses the wake-up button on the mobile phone, all the driving modules 110 may provide driving current to the corresponding light emitting devices 120 to drive the corresponding light emitting devices 120 to light up, and at this time, all the control modules 300 may control the corresponding ultrasonic receivers 200 to turn on so as to enable the corresponding ultrasonic receivers to enter a signal waiting state. Of course, in other embodiments of the present invention, other ways of illuminating the screen may also be used, such as triggering of an application program, such as an incoming call of a mobile phone, or voice triggering.
Further, in order to prevent signal interference and avoid the start-up of the ultrasonic transmitter 400 caused by the misoperation of the user, after the display screen is lighted by scanning each pixel unit 100, the display screen can obtain the triggering times and the triggering time of the triggering display screen of the user, and the ultrasonic transmitter is controlled to be started when the triggering times and the triggering time are judged to meet the starting condition. The starting condition may be calibrated according to an actual situation, for example, the starting condition may be that the display screen is triggered twice or three times continuously, and the time for triggering the display screen each time does not exceed 1 second.
Specifically, the above-mentioned mobile phone is taken as an example of the carrier of the array substrate of the display panel of the present invention. Wherein, the screen is lighted by pressing the wake-up key on the mobile phone by the user, so that the control module 300 controls the ultrasonic receiver 200 to be turned on to enable the ultrasonic receiver to enter a state of waiting for receiving signals, if the user triggers the display screen of the mobile phone for 3 times by using a finger for a short time (for example, not more than 1 second), the display screen can judge that the turn-on condition of the ultrasonic transmitter 400 is satisfied, and at this time, the IC of the display screen can control the ultrasonic transmitter 400 to perform ultrasonic emission work, so as to identify the finger fingerprint by using the principle of the ultrasonic fingerprint identification sensor.
In other embodiments of the present invention, after scanning each pixel cell 100 to illuminate the display screen, the ultrasonic transmitter 400 may also be triggered if the display screen is continuously pressed by a finger for a preset time. The preset time may be calibrated according to actual conditions, for example, the preset time may be 3 seconds, 4 seconds, 5 seconds, or the like.
Further, as shown in fig. 2, the driving module 110 (not shown in fig. 2) may include a first transistor T1 and a second transistor T2, and the control module 300 (not shown in fig. 3) may include: a storage capacitor C and a third transistor T3.
The control terminal of the first transistor T1 is connected to the data line Gate, and the first terminal of the first transistor T1 is connected to the scan line Source.
A control terminal of the second transistor T2 is connected to the second terminal of the first transistor T1, a first terminal of the second transistor T2 is connected to the power source Vee, and a second terminal of the second transistor T2 is connected to the anode of the light emitting device 120, wherein the cathode of the light emitting device 120 is grounded.
A first terminal of the storage capacitor C is connected to the control terminal of the second transistor T2, and a second terminal of the storage capacitor C is connected to the first terminal of the second transistor T2.
A control terminal of the third transistor T3 is connected to the cathode of the light emitting device 120, a first terminal of the third transistor T3 is connected to the scan line Source, and a second terminal of the third transistor T3 is connected to the ultrasonic receiver 200.
It should be noted that the first transistor T1, the second transistor T2, and the third transistor T3 described in this embodiment may be thin film transistors.
Specifically, as shown in fig. 2 and 3, for convenience of description of the present invention, a mobile phone is taken as an example of a carrier of the array substrate of the display panel of the present invention. When the user presses the wake-up button on the mobile phone to turn on the display screen, the IC of the display screen may control the data line Gate in the pixel unit 100 to output a high level signal, and the power source Vee in the pixel unit 100 generates a voltage (as shown in fig. 3), at this time, the first transistor T1 is turned on, so that the second transistor T2 is turned on, and the light emitting device 120 is turned on and turned on. When the light emitting device 120 is electrically turned on, the voltage generated by the power source Vee may be applied to the control terminal of the third transistor T3, so that the third transistor T3 is turned on to supply power to the ultrasonic receiver 200, so that the ultrasonic receiver 200 is turned on to enter a signal waiting state.
In addition, when the first transistor T1 and the second transistor T2 are turned on, the storage capacitor C starts to be charged to store the data signal, and after the scan line Source signal of the pixel unit 100 is ended, the storage capacitor C starts to be discharged to maintain the voltage of the control terminal of the second transistor T2, thereby supplying a Source-uninterrupted ground 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.
It should be noted that, when a mobile phone is used as the carrier of the array substrate of the display screen of the present invention, the data line Gate described in this embodiment may also be triggered by touching the display screen of the mobile phone with a finger.
Further, as shown in fig. 4, the display panel and the array substrate thereof may further include a substrate 500 (e.g., a glass substrate), a thin film transistor TFT layer 600 formed on the substrate 500, an ITO layer 700 formed on the TFT layer, an ultrasonic wave receiver layer 800 formed on the ITO layer, and a light emitting device layer 900 formed on the ultrasonic wave receiver layer.
Among them, the driving module 110 (not shown in fig. 4), the control module 300 (not shown in fig. 4) may be formed in the TFT layer 600, the ultrasonic transmitter 400 (not shown in fig. 4) may be formed in the ITO 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.
In summary, according to the array substrate of the display screen in the embodiment of the invention, the driving module supplies the driving current to the light emitting device to drive the light emitting device to light, so that the control module controls the ultrasonic receiver to be turned on when the light emitting device is lighted, and when the ultrasonic emitter emits the ultrasonic wave, the principle of the ultrasonic fingerprint identification sensor is used for identifying the fingerprint of the finger. Therefore, full-screen fingerprint identification can be realized by correspondingly arranging the ultrasonic receiver in each pixel unit. In addition, in the embodiment of the invention, the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, and a part of circuits of the drive circuit are shared to realize the starting control of the ultrasonic receiver, so that the complexity and the circuit scale of the circuit are reduced, and the size of a module can be reduced. Meanwhile, in the embodiment of the invention, each pixel unit is provided with the ultrasonic receiver, so that the identification accuracy can be greatly improved.
In order to implement the above embodiments, the present invention further provides a display panel, which includes the array substrate of the display panel.
In an embodiment of the present invention, the display screen further includes: and the fingerprint identification module is used for carrying out fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver.
In an embodiment of the present invention, the display screen further includes: the trigger identification module is used for acquiring the triggering times and the triggering time of the triggering display screen of the user; and the starting module is used for controlling the ultrasonic transmitter to be started when judging that the starting condition is met according to the triggering times and the triggering time.
In an embodiment of the present invention, when the triggering time of each time is less than the preset time threshold and the triggering time is equal to the preset time threshold, the starting module determines that the starting condition is satisfied. The preset time threshold and the preset time threshold can be calibrated according to actual conditions.
It should be noted that details not disclosed in the display panel of the embodiment of the present invention refer to details disclosed in the array substrate of the display panel of the embodiment of the present invention, and are not repeated herein.
In summary, the display screen according to the embodiment of the present invention can realize full-screen fingerprint identification through the array substrate of the display screen, and the control module of the ultrasonic receiver is integrated into the driving circuit of the light emitting device, so that the complexity and the circuit scale of the circuit can be reduced, and the size of the module can be reduced.
In order to implement the above embodiments, the present invention further provides an electronic device, which includes the above display screen.
According to the electronic equipment provided by the embodiment of the invention, full-screen fingerprint identification can be realized through the display screen, and the control module of the ultrasonic receiver is integrated into the drive circuit of the light-emitting device, so that the complexity and the circuit scale of the circuit can be reduced, the size of the module can be reduced, and in addition, each pixel unit is provided with the ultrasonic receiver, so that the identification accuracy can be greatly improved.
Fig. 5 is a flowchart of a fingerprint recognition method of a display screen according to an embodiment of the present invention.
As shown in fig. 5, the fingerprint identification method for a display screen according to an embodiment of the present invention includes the following steps:
and S1, generating a data line signal and lighting the light-emitting device through the driving module.
And S2, controlling the ultrasonic receiver corresponding to the light-emitting device to be started after the light-emitting device is lightened.
And S3, controlling the ultrasonic transmitter to transmit ultrasonic waves.
And S4, acquiring the ultrasonic signal received by the ultrasonic receiver.
And S5, fingerprint identification is carried out according to the ultrasonic wave signal received by the ultrasonic wave receiver.
In one embodiment of the present invention, before generating the data line signal, the method further includes: judging whether the lighting condition of the display screen is met or not; if the lighting condition is satisfied, a data line signal is generated.
In an embodiment of the present invention, before controlling the ultrasonic transmitter to transmit the ultrasonic wave, the method further includes: acquiring the triggering times and triggering time of a user for triggering a display screen; and controlling the ultrasonic transmitter to transmit ultrasonic waves when the starting condition is judged to be met according to the triggering times and the triggering time.
It should be noted that details not disclosed in the fingerprint identification method of the display screen according to the embodiment of the present invention refer to details disclosed in the array substrate of the display screen according to the embodiment of the present invention, and are not repeated herein.
In summary, according to the fingerprint identification method of the display screen in the embodiment of the present invention, a data line signal is generated, the light emitting device is turned on by the driving module, after the light emitting device is turned on, the ultrasonic receiver corresponding to the light emitting device is controlled to be turned on, the ultrasonic transmitter is controlled to transmit ultrasonic waves, then the ultrasonic signal received by the ultrasonic receiver is obtained, and fingerprint identification is performed according to the ultrasonic signal received by the ultrasonic receiver. Therefore, full-screen fingerprint identification can be realized, each pixel unit is provided with one ultrasonic receiver, and the identification accuracy can be greatly improved.
FIG. 6 is a block schematic diagram of a display screen according to one embodiment of the invention.
As shown in fig. 6, the display screen according to the embodiment of the present invention includes: a plurality of display units 10, an ultrasonic transmitter 200, and a controller 30.
Wherein each display unit 10 includes one light emitting device 120 and one ultrasonic receiver 200;
the ultrasonic transmitter 400 is used to transmit ultrasonic waves.
The controller 30 is used for fingerprint recognition according to the ultrasonic signal received by the ultrasonic receiver 200.
In an embodiment of the present invention, as shown in fig. 4, the display screen may further include: a substrate 500 (e.g., a glass substrate), a Thin Film Transistor (TFT) layer 600 formed over the substrate 500, an ITO (Indium Tin Oxide) layer 700 formed over the TFT layer, an ultrasonic receiver layer 800 formed over the ITO layer, and a light emitting device layer 900 formed over the ultrasonic receiver layer.
Among them, the ultrasonic transmitter 400 (not shown in fig. 4) is formed in the ITO layer 700, the ultrasonic receiver 200 is formed in the ultrasonic receiver layer 800, and the light emitting device 120 is formed in the light emitting device layer 900.
It should be noted that details not disclosed in the display panel of the embodiment of the present invention refer to details disclosed in the array substrate of the display panel of the embodiment of the present invention, and are not repeated herein.
In summary, the display screen according to the embodiment of the present invention utilizes the light emitting device and the ultrasonic receiver, as well as the ultrasonic transmitter and the controller in each display unit to identify the finger print. Therefore, full-screen fingerprint identification can be realized, each display unit is provided with one ultrasonic receiver, and the identification accuracy can be greatly improved.
Fig. 7 is a flowchart of a fingerprint recognition method of a display screen according to another embodiment of the present invention.
As shown in fig. 7, the fingerprint identification method for a display screen according to an embodiment of the present invention includes the following steps:
and S101, controlling the display screen to emit light and controlling the ultrasonic receiver to be started.
And S102, controlling the ultrasonic transmitter to transmit ultrasonic waves.
S103, acquiring the ultrasonic signal received by the ultrasonic receiver.
And S104, performing fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver.
It should be noted that details not disclosed in the fingerprint identification method of the display screen according to the embodiment of the present invention refer to details disclosed in the array substrate of the display screen according to the embodiment of the present invention, and are not repeated herein.
In summary, according to the fingerprint identification method for the display screen of the embodiment of the invention, the display screen is controlled to emit light, the ultrasonic receiver is controlled to be turned on, the ultrasonic transmitter is controlled to transmit ultrasonic waves, the ultrasonic signals received by the ultrasonic receiver are obtained, and finally fingerprint identification is performed according to the ultrasonic signals received by the ultrasonic receiver. Therefore, full-screen fingerprint identification can be realized, each display unit is provided with one ultrasonic receiver, and the identification accuracy can be greatly improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (14)
1. An array substrate of a display screen, comprising:
a plurality of pixel cells, wherein each of the pixel cells comprises a driving module, a light emitting device, at least one ultrasonic receiver, and a control module:
the driving module is used for providing a driving current for the light-emitting device to drive the light-emitting device to light;
the ultrasonic receiver is used for receiving ultrasonic signals;
the control module controls the ultrasonic receiver to be started when the light-emitting device is lightened;
an ultrasonic transmitter that transmits ultrasonic waves.
2. The array substrate for a display screen of claim 1, wherein the driving module comprises:
the control end of the first transistor is connected with the data line, and the first end of the first transistor is connected with the scanning line;
and a control terminal of the second transistor is connected to the second terminal of the first transistor, a first terminal of the second transistor is connected to a power supply, and a second terminal of the second transistor is connected to an anode of the light emitting device, wherein a cathode of the light emitting device is grounded.
3. The array substrate for a display screen of claim 2, wherein the control module comprises:
a first end of the storage capacitor is connected with the control end of the second transistor, and a second end of the storage capacitor is connected with the first end of the second transistor;
and a control end of the third transistor is connected with the cathode of the light-emitting device, a first end of the third transistor is connected with the scanning line, and a second end of the third transistor is connected with the ultrasonic receiver.
4. The array substrate for a display screen of claim 2, wherein the array substrate comprises:
a substrate;
a Thin Film Transistor (TFT) layer formed over the substrate;
an ITO layer formed over the TFT layer;
an ultrasonic receiver layer formed over the ITO layer;
a light emitting device layer formed over the ultrasonic receiver layer;
wherein the driving module and the control module are formed in the TFT layer, the ultrasonic transmitter is formed in the ITO layer, the ultrasonic receiver is formed in the ultrasonic receiver layer, and the light emitting device is formed in the light emitting device layer.
5. A display screen comprising the array substrate according to any one of claims 1 to 4.
6. The display screen of claim 5, further comprising:
and the fingerprint identification module is used for carrying out fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver.
7. The display screen of claim 5, further comprising:
the trigger identification module is used for acquiring the triggering times and triggering time of the user for triggering the display screen;
and the starting module is used for controlling the ultrasonic transmitter to be started when judging that the starting condition is met according to the triggering times and the triggering time.
8. The display screen of claim 7, wherein the enabling module determines that an enabling condition is met when the triggering time is less than a preset time threshold each time and the triggering time is equal to a preset time threshold.
9. An electronic device, characterized in that it comprises a display screen according to claims 5-8.
10. A fingerprint recognition method based on a display screen according to any one of claims 5 to 8, comprising the steps of:
generating a data line signal, and lighting the light emitting device through the driving module;
after the light-emitting device is lightened, controlling an ultrasonic receiver corresponding to the light-emitting device to be started;
controlling the ultrasonic transmitter to transmit ultrasonic waves;
acquiring an ultrasonic signal received by the ultrasonic receiver;
and fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver.
11. The method for fingerprint recognition of a display screen according to claim 10, further comprising, before said generating of the data line signal:
judging whether the lighting condition of the display screen is met or not;
generating the data line signal if the lighting condition is satisfied.
12. The method for fingerprint recognition of a display screen according to claim 10, further comprising, before said controlling said ultrasonic transmitter to transmit ultrasonic waves:
acquiring the triggering times and triggering time of a user for triggering the display screen;
and controlling the ultrasonic transmitter to transmit ultrasonic waves when the starting condition is judged to be met according to the triggering times and the triggering time.
13. A display screen, comprising:
a plurality of display units, each of the display units including a light emitting device and an ultrasonic receiver;
an ultrasonic transmitter for transmitting ultrasonic waves;
the controller is used for carrying out fingerprint identification according to the ultrasonic signals received by the ultrasonic receiver;
a substrate;
a Thin Film Transistor (TFT) layer formed over the substrate;
an ITO layer formed over the TFT layer;
an ultrasonic receiver layer formed over the ITO layer;
a light emitting device layer formed over the ultrasonic receiver layer;
wherein the ultrasonic transmitter is formed in the ITO layer, the ultrasonic receiver is formed in the ultrasonic receiver layer, and the light emitting device is formed in the light emitting device layer.
14. A fingerprint recognition method for a display screen according to claim 13, comprising the steps of:
controlling the display screen to emit light and controlling the ultrasonic receiver to be started;
controlling the ultrasonic transmitter to transmit ultrasonic waves;
acquiring an ultrasonic signal received by the ultrasonic receiver;
and fingerprint identification is carried out according to the ultrasonic signals received by the ultrasonic receiver.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515246.0A CN108805044B (en) | 2018-05-25 | 2018-05-25 | Display screen, array substrate thereof, fingerprint identification method and electronic equipment |
| PCT/CN2019/087836 WO2019223695A1 (en) | 2018-05-25 | 2019-05-21 | Display screen, array substrate and fingerprint recognition method therefor, and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515246.0A CN108805044B (en) | 2018-05-25 | 2018-05-25 | Display screen, array substrate thereof, fingerprint identification method and electronic equipment |
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| Publication Number | Publication Date |
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| CN108805044A CN108805044A (en) | 2018-11-13 |
| CN108805044B true CN108805044B (en) | 2021-03-16 |
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| CN201810515246.0A Active CN108805044B (en) | 2018-05-25 | 2018-05-25 | Display screen, array substrate thereof, fingerprint identification method and electronic equipment |
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| CN (1) | CN108805044B (en) |
| WO (1) | WO2019223695A1 (en) |
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| CN108805044B (en) * | 2018-05-25 | 2021-03-16 | 京东方科技集团股份有限公司 | Display screen, array substrate thereof, fingerprint identification method and electronic equipment |
| CN109598233B (en) * | 2018-12-04 | 2021-03-16 | 武汉华星光电半导体显示技术有限公司 | Display device with fingerprint identification function |
| CN110326038B (en) * | 2019-05-20 | 2023-02-03 | 京东方科技集团股份有限公司 | Pixel circuit, driving method thereof, pixel unit and display device |
| CN113239777A (en) * | 2021-05-10 | 2021-08-10 | 北京集创北方科技股份有限公司 | Awakening method of fingerprint identification module, fingerprint identification module and electronic device |
| CN114442807B (en) * | 2022-01-18 | 2024-01-19 | 惠州Tcl移动通信有限公司 | Ultrasonic wave generating assembly and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201106044A (en) * | 2010-09-09 | 2011-02-16 | Vastview Tech Inc | A liquid crystal display |
| CN105046243A (en) * | 2015-08-25 | 2015-11-11 | 业成光电（深圳）有限公司 | Display device |
| CN107134259A (en) * | 2017-06-28 | 2017-09-05 | 京东方科技集团股份有限公司 | Image element circuit, driving method, display module, driving method and display device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI370399B (en) * | 2007-07-18 | 2012-08-11 | Quanta Comp Inc | Electronic apparatus equipped with touch panel capable of identifying fingerprint |
| 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 |
| CN106951130B (en) * | 2017-03-28 | 2019-09-03 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel, display equipment and array substrate preparation method |
| CN107193430A (en) * | 2017-04-13 | 2017-09-22 | 上海与德科技有限公司 | Array base palte, display module, electronic equipment, fingerprint identification method and device |
| CN107195661B (en) * | 2017-05-31 | 2020-11-06 | 北京小米移动软件有限公司 | OLED panel |
| CN107220630B (en) * | 2017-06-07 | 2021-09-03 | 京东方科技集团股份有限公司 | Display substrate, driving method thereof and display device |
| CN107194384B (en) * | 2017-07-13 | 2019-09-06 | 京东方科技集团股份有限公司 | Display base plate and its driving method, display device |
| CN207182329U (en) * | 2017-09-12 | 2018-04-03 | 南昌欧菲生物识别技术有限公司 | Electronic equipment |
| CN108805044B (en) * | 2018-05-25 | 2021-03-16 | 京东方科技集团股份有限公司 | Display screen, array substrate thereof, fingerprint identification method and electronic equipment |
-
2018
- 2018-05-25 CN CN201810515246.0A patent/CN108805044B/en active Active
-
2019
- 2019-05-21 WO PCT/CN2019/087836 patent/WO2019223695A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201106044A (en) * | 2010-09-09 | 2011-02-16 | Vastview Tech Inc | A liquid crystal display |
| CN105046243A (en) * | 2015-08-25 | 2015-11-11 | 业成光电（深圳）有限公司 | Display device |
| CN107134259A (en) * | 2017-06-28 | 2017-09-05 | 京东方科技集团股份有限公司 | Image element circuit, driving method, display module, driving method and display device |
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|---|---|
| CN108805044A (en) | 2018-11-13 |
| WO2019223695A1 (en) | 2019-11-28 |
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