WO2018223656A1 - 像素单元及驱动方法、显示面板及驱动方法、显示装置 - Google Patents

像素单元及驱动方法、显示面板及驱动方法、显示装置 Download PDF

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Publication number
WO2018223656A1
WO2018223656A1 PCT/CN2017/116576 CN2017116576W WO2018223656A1 WO 2018223656 A1 WO2018223656 A1 WO 2018223656A1 CN 2017116576 W CN2017116576 W CN 2017116576W WO 2018223656 A1 WO2018223656 A1 WO 2018223656A1
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Prior art keywords
circuit
line
switch
sub
control
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PCT/CN2017/116576
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English (en)
French (fr)
Inventor
杨盛际
董学
吕敬
陈小川
玄明花
张粲
杨明
李艳
徐晓玲
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京东方科技集团股份有限公司
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Priority to US16/070,513 priority Critical patent/US10741125B2/en
Publication of WO2018223656A1 publication Critical patent/WO2018223656A1/zh

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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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Definitions

  • Embodiments of the present disclosure relate to display technologies, and in particular, to a pixel unit and a driving method, a display panel, a driving method, and a display device.
  • a conventional technique consists in performing interlaced scanning in a frame of a picture to charge a pixel that does not need to be charged once every n frames, thereby achieving energy saving.
  • the conventional technology accesses the AND gate at the gate end, and controls the state of each row by pulse control, thereby achieving the purpose of scanning only the specified row. Since the "AND gate” needs to be fabricated on the array when manufacturing the GOA, the process becomes complicated, which is disadvantageous for product production and yield improvement.
  • embodiments of the present disclosure provide a pixel unit and a driving method, a display panel, a driving method, and a display device.
  • a pixel unit includes: a driving sub circuit, a first switching sub circuit, a second switching sub circuit, and a light emitting element;
  • the first end of the driving sub-circuit is electrically connected to the first power end, and the second end is electrically connected to the first end of the light emitting element;
  • the first switch sub-circuit is disposed in series with the second switch sub-circuit, the input end of the first switch sub-circuit is electrically connected to the data line, and the output end of the first switch sub-circuit is electrically connected to the input end of the second switch sub-circuit, first The control end of the switch sub-circuit is connected to the scan line; the output end of the second switch sub-circuit is electrically connected to the input end of the drive sub-circuit, and the control end of the first switch sub-circuit is electrically connected to one of the scan line and the switch control line, The control end of the second switch sub-circuit is electrically connected to the other of the scan line and the switch control line;
  • the first switch sub-circuit and the second switch sub-circuit are configured to selectively input the data voltage signal on the data line under the control of the scan signal on the scan line and the switch control signal on the switch control line. Driving the sub-circuit to control whether the light-emitting element emits light.
  • the first switch sub-circuit is connected to a scan line; the second switch sub-circuit is electrically connected to the switch control line, and the second switch sub-circuit is configured as a switch control signal on the switch control line Turning on or off under control to control whether a data voltage signal on the data line is written to the light emitting element.
  • the first switch sub-circuit includes a switching transistor, a first pole of the switching transistor is electrically connected to the data line, a control electrode is electrically connected to the scan line; and the second switch sub-circuit includes a control transistor, A first pole of the control transistor is electrically coupled to a second pole of the switching transistor, a second pole of the control transistor is electrically coupled to the driver subcircuit, and a control pole is electrically coupled to the switch control line.
  • the driving subcircuit includes: a driving transistor, the first electrode of the driving transistor is electrically connected to the first power terminal, the second electrode is electrically connected to the first end of the light emitting element, and the control electrode is electrically connected to the a second pole of the second switch subcircuit; and a storage capacitor, the first end of the storage capacitor being electrically connected to the first power terminal, and the second end being electrically connected to the control terminal of the drive transistor.
  • the second end of the light emitting element is connected to the second power end.
  • the pixel unit is disposed on a silicon-based substrate.
  • a driving method of a pixel unit includes:
  • the driving subcircuit writes a data voltage signal on the data line to the light emitting element to cause the light emitting element to emit light.
  • a display panel that includes at least one pixel unit in accordance with an embodiment of the present disclosure.
  • the display panel is divided into a plurality of display areas arranged in an array, wherein a second switch sub-circuit among a plurality of the pixel units located in the same display area is electrically connected to the same switch control line.
  • a second one of the plurality of pixel units located in the same column in the display panel is electrically connected to the same one of the switch control lines.
  • the display panel further includes a line-of-sight capturing device configured to capture and track a line of sight of a human eye, and a position control device, wherein the line of sight of the human eye falls into a position of a display area in the display panel
  • the position of the human eye line acquired by the line-of-sight capturing device falling into the display area in the display panel is set as the first display area, and the display area other than the first display area is set to Second display area;
  • the timing control device is configured such that the number of times the pixel unit in the first display area is written to the data voltage is greater than the number of times the pixel unit in the second display area is written to the data voltage within one frame display time .
  • the display panel further includes a plurality of gate driving units and a plurality of source driving units connected to the timing control device; wherein scan line connections connected to the pixel units in the display area in the same row And to the same one of the gate driving units; and the data lines connected to the pixel units in the display area of the same column are connected to the same one of the source driving units.
  • the refresh rate of the first display area is twice the refresh frequency of the second display area.
  • a driving method of a display panel includes:
  • the driving subcircuit writes a data voltage signal on the data line to the light emitting element to cause the light emitting element to emit light.
  • the driving method further includes: before inputting an effective working level signal to the scan line and the switch control line,
  • Obtaining and tracking the line of sight of the human eye by the line-of-sight capturing device acquiring a position where the line of sight of the human eye falls into the display area in the display panel; wherein the line of sight of the human eye acquired by the line of sight capturing device falls into the display area in the display panel
  • the position is set as the first display area, and the display area other than the first display area is set as the second display area.
  • the timing control device is configured such that, within one frame display time, the number of times the scan line switch control line connected to the pixel unit in the first display area is input to the active work level signal is greater than the second The number of times the scan line and the switch control line to which the pixel unit in the display area is connected is input with the effective work level signal; and the number of times the data line connected to the pixel unit in the first display area is written to the data voltage, And a number of times that the data line connected to the pixel unit in the second display area is written with the data voltage, so that the refresh frequency of the first display area is greater than the refresh frequency of the second display area.
  • a display device including a display panel according to an embodiment of the present disclosure.
  • FIG. 1A is a schematic structural diagram of a pixel unit according to an embodiment of the present disclosure
  • FIG. 1B is an example circuit diagram of a pixel unit in accordance with an embodiment of the present disclosure
  • 1C is another example circuit diagram of a pixel unit in accordance with an embodiment of the present disclosure.
  • FIG. 2 is a flowchart of a driving method of a pixel unit according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a driving method of a display panel according to an embodiment of the present disclosure
  • FIG. 4A is a schematic block diagram of a display panel in accordance with an embodiment of the present disclosure.
  • Figure 4B is a schematic block diagram of the line of sight capture device of Figure 4A;
  • FIG. 5 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic block diagram of a display device in accordance with an embodiment of the present disclosure.
  • the transistors employed in the embodiments of the present disclosure may be thin film transistors or field effect transistors or other devices of the same characteristics. Since the source and drain of the transistor used are interchangeable under certain conditions, there is no difference in the description of the source and drain connections.
  • one of the poles is referred to as a first pole
  • the other pole is referred to as a second pole
  • the gate is referred to as a gate.
  • the transistors can be classified into an N-type and a P-type according to the characteristics of the transistors. In the following embodiments, the transistors are N-type transistors.
  • the drain of the first very N-type transistor and the source of the second N-type transistor have a source-drain conduction when the gate input is high, and the P-type is opposite. It is conceivable that the implementation of a transistor using a P-type transistor is easily conceivable by those skilled in the art without any inventive effort, and is therefore within the scope of protection of the embodiments of the present disclosure.
  • the effective operating level signal is a high level signal. It should be understood that if the thin film transistor is a P-type transistor, the effective operating level signal is a low level signal.
  • an embodiment of the present disclosure provides a pixel unit including: a driving sub-circuit 101, a first switching sub-circuit 102, a second switching sub-circuit 103, and a light-emitting element 104.
  • the first end of the driving sub-circuit 101 is electrically connected to the first power terminal V1, and the second end is electrically connected to the first end of the light emitting element 104.
  • the input end of the first switch sub-circuit 102 is electrically connected to the data line Data
  • the output end of the first switch sub-circuit 102 is electrically connected to the input end of the second switch sub-circuit 103
  • the control end of the first switch sub-circuit 102 is electrically Connected to one of the scan line Gate L and the switch control line Gate R
  • the control terminal of the second switch sub-circuit 103 is electrically connected to the other of the scan line Gate L and the switch control line Gate R.
  • the output of the second switching subcircuit is electrically coupled to the input of the drive subcircuit.
  • the first switch sub-circuit 102 and the second switch sub-circuit 103 are configured to selectively place the data line Data under the control of the scan signal on the scan line Gate L and the switch control signal on the switch control line Gate R
  • the data voltage signal is input to the control terminal of the driving sub-circuit 101. That is, although the control terminal of the first switch sub-circuit 102 is electrically connected to the scan line Gate L, the control terminal of the second switch sub-circuit 103 is electrically connected to the switch control line Gate R, substantially the first switch.
  • the positions of the sub-circuit 102 and the second switch sub-circuit 103 may be interchanged, that is, the control terminal of the first switch sub-circuit 102 may be electrically connected to the switch control line Gate R, and the control terminal of the second switch sub-circuit 103 is electrically connected to Scan line Gate L.
  • the light emitting element 104 may be a current-driven organic light emitting diode OLED, or may be a voltage-driven light emitting element such as a liquid crystal capacitor, and embodiments of the present disclosure are not limited thereto.
  • FIG. 1B illustrates one example circuit diagram of a pixel unit in which a light emitting element is an OLED, in accordance with an embodiment of the present disclosure.
  • the control terminal of the first switch sub-circuit 102 is electrically connected to the scan line Gate L
  • the control terminal of the second switch sub-circuit 103 is electrically connected to the switch control line Gate R.
  • the second switch sub-circuit 103 is configured to be turned on or off under the control of the switch control signal on the switch control line Gate R to control whether the data voltage signal Dada on the data line is written to the light emitting element OLED .
  • the first switch sub-circuit may include a switching transistor T1, the first pole of the switching transistor T1 being electrically connected to the data line Dada as an input terminal of the first switching sub-circuit, and the control electrode being electrically connected to the control terminal of the first switching sub-circuit to The scan line Gate L.
  • the second switch sub-circuit 103 may include a control transistor T2, and the first electrode of the control transistor T2 is electrically connected to the second terminal of the switching transistor T1 as an input terminal of the second switch sub-circuit.
  • the second electrode of the control transistor T2 is electrically connected to the driving sub-circuit as an output terminal of the second switching sub-circuit, and the control electrode is electrically connected to the switching control line Gate R as a control terminal of the second switching sub-circuit.
  • the driving sub-circuit 101 may include a driving transistor DTFT, the first electrode of which is electrically connected to the first power supply terminal V1 as an input terminal of the driving sub-circuit, and the second electrode is electrically connected to the light-emitting element as an output terminal of the driving sub-circuit The first end, and the control electrode is electrically coupled to the second terminal of the control transistor as a control terminal of the driver subcircuit.
  • the first power terminal can be a voltage signal Vdd.
  • the second end of the OLED element can be connected to the second power supply terminal V2.
  • the second power terminal V2 can be the voltage signal Vss or grounded.
  • the circuit may also include, for example, a threshold voltage compensation sub-circuit, a reset sub-circuit, an illumination control sub-circuit, and the like.
  • the second pole of the switching transistor T1 in the original pixel unit is connected to a certain component, according to an embodiment of the present disclosure, the second pole of the switching transistor T1 is connected to the first pole of the control transistor T2, and the control transistor T2 The second pole is connected to the one of the components.
  • the second switch sub-circuit 103 is disposed in the pixel unit in this embodiment, when the pixel unit is applied to the display panel, when the scan line Gate L is scanned, it can be input on the switch control line Gate R. Under the control of the control signal, the second switch sub-circuit 103 is controlled to be turned on or off, thereby controlling whether the data voltage signal on the corresponding data line Data is written to a light-emitting element such as an organic electroluminescent diode OLED or a liquid crystal capacitor. That is, whether or not the data voltage is written to a specific pixel unit in the display panel is controlled by the second switch sub-circuit 103, and the smart display can be realized according to the display demand of the display panel.
  • a light-emitting element such as an organic electroluminescent diode OLED or a liquid crystal capacitor. That is, whether or not the data voltage is written to a specific pixel unit in the display panel is controlled by the second switch sub-circuit 103, and the smart display can be realized according to the
  • both the scan line Gate L and the switch control line Gate R are written to the high level signal
  • both the switching transistor T1 and the control transistor T2 are turned on, and at this time, the data voltage written on the data line Data is paired with the storage capacitor.
  • C1 is charged until the driving transistor DTFT is turned on, thereby driving the organic electroluminescent diode OLED to emit light.
  • FIG. 1C illustrates an example circuit diagram of a pixel unit in which a light emitting element is a pixel capacitance Clc such as a liquid crystal capacitor, according to an embodiment of the present disclosure.
  • the control terminal of the first switch sub-circuit 102 is electrically coupled to the scan line Gate L
  • the control terminal of the second switch sub-circuit 103 is electrically coupled to the switch control line Gate R.
  • the second switch sub-circuit 103 is configured to be turned on or off under the control of a switch control signal on the switch control line Gate R to control whether the data voltage signal Dada on the data line is to be Write to the pixel capacitor Clc.
  • the first switch sub-circuit may include a switching transistor T1 whose first pole is electrically connected to the data line Dada and whose control electrode is electrically connected to the scan line Gate L.
  • the second switch sub-circuit 103 may include a control transistor T2, a first pole of the control transistor T2 is connected to a second pole of the switching transistor T1, and a second pole of the control transistor T2 is connected to a driver.
  • the circuit, the control pole is electrically connected to the switch control line Gate R.
  • the driving sub-circuit 101 may include a storage capacitor Cst in parallel with the pixel capacitor Clc.
  • the first end of the pixel capacitor Clc may be connected to the first power terminal V1
  • the second end of the pixel capacitor Clc may be connected to the second power terminal V2.
  • the second power terminal V2 can be a common voltage or grounded.
  • a common voltage compensation sub-circuit, a reset sub-circuit, an emission control sub-circuit, or the like can be added to the circuit.
  • the second pole of the switching transistor T1 in the original pixel unit is connected to a certain component, according to an embodiment of the present disclosure, the second pole of the switching transistor T1 is connected to the first pole of the control transistor T2, and the control transistor T2 The second pole is connected to the one of the components.
  • the second switch sub-circuit 103 is disposed in the pixel unit in this embodiment, when the pixel unit is applied to the display panel, when the scan line Gate L is progressive, it can be input on the switch control line Gate R. Under the control of the control signal, the second switch sub-circuit 103 is controlled to be turned on or off, thereby controlling whether or not the data voltage signal on the corresponding data line Data is written to the light-emitting element such as the pixel capacitance Clc. That is, it is controlled by the second switch sub-circuit 103 whether or not a data voltage is written to a specific pixel unit in the display panel, and intelligent display can be realized according to the display requirement of the display panel.
  • both the scan line Gate L and the switch control line Gate R are written to the high level signal
  • both the switching transistor T1 and the control transistor T2 are turned on, and at this time, the data voltage written on the data line Data is paired with the storage capacitor. Cst is charged to drive the light emitting element to emit light.
  • the pixel unit in this embodiment is suitable for silicon based display.
  • the pixel unit can be formed on a silicon-based substrate.
  • FIG. 2 illustrates a flow chart of a method of driving a pixel unit in accordance with an embodiment of the present disclosure.
  • the driving method 20 of the pixel unit according to an embodiment of the present disclosure may include the following steps.
  • step S201 an effective working level signal is input to the scan line and the switch control line, respectively, so that both the first switch sub-circuit and the second switch sub-circuit are turned on.
  • step S202 the driving sub-circuit writes the data voltage signal on the data line to the light-emitting element to cause the light-emitting element to emit light.
  • each pixel unit needs to keep displaying the display time of one frame until the arrival of the scan signal of the next frame.
  • the scan signal input to the scanning line Gate L connected to the pixel unit is a low level signal.
  • An embodiment of the present disclosure also provides a display panel including at least one pixel unit according to an embodiment of the present disclosure.
  • a second switch sub-circuit is disposed in the pixel unit. Therefore, when the scan line Gate L is progressively scanned, the second switch sub-circuit can be controlled to be turned on or off under the control of the control signal input on the switch control line Gate R, thereby controlling whether the data line Data is to be The upper data voltage signal is written to the light emitting element. Therefore, whether the data voltage is written to a specific pixel unit in the display panel is controlled by the second switch sub-circuit, thereby realizing intelligent display according to the display requirement of the display panel.
  • FIG. 3 shows a flow chart showing a driving method of a display panel according to an embodiment of the present disclosure.
  • the driving method 30 of the display panel according to an embodiment of the present disclosure may include the following steps.
  • step S301 an effective working level signal is input to the scan line and the switch control line, respectively, so that both the first switch sub-circuit and the second switch sub-circuit are turned on.
  • step S302 the driving sub-circuit writes the data voltage signal on the data line to the light-emitting element to cause the light-emitting element to emit light.
  • An embodiment of the present disclosure also provides a display panel.
  • the display panel is divided into a plurality of display areas arranged in an array, and pixel units according to embodiments of the present disclosure are disposed in each display area.
  • the second switch sub-circuit among the plurality of pixel units located in the same display area is electrically connected to the same switch control line Gate R. That is, the pixel unit in the same display area is controlled by a switch control line Gate R. Further, the second switch sub-circuit among the plurality of pixel units located in the same column in the display panel may be electrically connected to the same one of the switch control lines.
  • the switch control line Gate R is written to the effective working level signal, and the data voltage signal can be written to the pixel unit in the corresponding display area through the data line Data. Therefore, the data voltage can be selectively written to the pixel unit in at least part of the display area of the display panel, so that the number of times the pixel unit in each display area is written into the data voltage within one frame display time can be controlled, thereby implementing different display areas.
  • the display panel may further include a line-of-sight capturing device 411, a timing control device 412, a plurality of source driving units 413, and a plurality of gate driving units 414.
  • the scan lines Gate L connected to the pixel units in the display area of the same row are connected to the same gate driving unit, and the data lines Data connected to the pixel units in the display area of the same column are connected to the same The source driving unit.
  • a plurality of source driving units 413 and a plurality of gate driving units 414 are each connected to the timing control device 412.
  • the source driving unit 413 can be implemented by the source driving chip, the gate driving unit 414 by the gate driving chip, and the timing control device 412 by the timing controller.
  • the gaze capture device 411 is configured to capture and track the line of sight of the human eye, and to capture the position of the display area of the display panel in which the human eye line of sight falls.
  • the position of the human eye line of sight acquired by the gaze capturing device 411 falling into the display area of the display panel is set as the first display area, and the display area other than the first display area is set to the second Display area.
  • FIG. 4B illustrates an example block diagram of a line of sight capture device 411 in accordance with an embodiment of the present disclosure.
  • the line-of-sight capture device 411 can include at least one image capture device, such as a pupil camera, for capturing an image of the user's eye.
  • the eye data of the user's one eye or both eyes may be collected, including but not limited to video data such as visible light and infrared light in the eye region, and the collected eye data is transmitted to the processor.
  • the processor calculates a line of sight direction, a gaze point position coordinate, and the like based on the received data, and outputs the calculation result to the timing control device.
  • the line of sight capture device of FIG. 4B is merely an example, and the line of sight capture device in accordance with embodiments of the present disclosure may be implemented by various conventional line of sight capture techniques or line of sight tracking techniques.
  • the gate driving unit 414 is configured to scan the scan lines connected thereto at a predetermined scanning frequency line by line.
  • the source drive unit 413 is configured to provide a data voltage signal to a data line connected thereto.
  • the timing control device 412 is configured to control the gate driving unit 414 and the source driving unit 413 such that the gate driving chip corresponding to the first display region outputs the scanning signal for a number of times greater than the second display region within one frame display time.
  • the number of times the gate drive chip of the corresponding row outputs the scan signal; and the number of times the source drive chip corresponding to the first display area outputs the data voltage signal is greater than the output signal voltage signal of the source drive chip corresponding to the column corresponding to the second display area The number of times.
  • the timing control device 412 can control the number of times the pixel unit in the first display area is written to the data voltage is greater than the number of times the pixel unit in the second display area is written to the data voltage, so that the first display The refresh rate of the area is greater than the refresh frequency of the second display area.
  • the refresh rate of the first display area is 120 Hz
  • the refresh rate of the second display area is 60 Hz.
  • the refresh rate of the first display area is twice the refresh rate of the second display area.
  • the display panel is divided into nine display areas: Q11, Q12, Q13, Q21, Q22, Q23, Q31, Q32, and Q33.
  • the gate driving unit for providing a scan signal for the scan lines in the first row display regions (Q11, Q12, Q13) is Gate GOA1; for displaying the regions in the second row (Q21, Q22, Q23)
  • the gate driving unit that scans the scan signal is Gate GOA2;
  • the gate driving unit that supplies the scan signal to the scan lines in the third row display area (Q31, Q32, Q33) is Gate GOA3;
  • the data driving line in the column display area (Q11, Q21, Q31) provides the data driving signal source source unit as Source Unit1; and is used to provide data voltage signals for the data lines in the second column display area (Q12, Q22, Q32)
  • the source drive unit is Source Unit 2; the source drive unit for providing data voltage signals for the data lines in the third column display area (Q13, Q
  • the switch control lines corresponding to the display areas Q11, Q12, Q13, Q21, Q22, Q23, Q31, Q32, and Q33 are Gate R11, Gate R12, Gate R13, Gate R21, Gate R22, Gate R23, Gate R31, and Gate R32, respectively. , Gate R33.
  • the driving method of the display panel in this embodiment may further include the following steps.
  • the position of the display area in the display panel by the line of sight of the human eye is acquired by the line-of-sight capturing device according to the line of sight of the human eye.
  • the position of the human eye line acquired by the line-of-sight capturing device falling into the display area in the display panel is set as the first display area, and the display area other than the first display area is set as the second display area.
  • the line of sight of the human eye acquired by the line of sight capture unit falls into Q22, that is, Q22 is the first display area, and the remaining 8 display areas are all the second display area.
  • the effective control level signal (high power) is sequentially input to all the switch control lines (Gate R11, Gate R12, Gate R13, Gate R21, Gate R22, Gate R23, Gate R31, Gate R32, Gate R33) through the timing control device. Ping signal), to control Gate GOA1, Gate GOA2, Gate GOA3 to work one by one.
  • the Gate GOA1 scans the pixel units in the display area of the first row as an example, and the Gate GOA1 scans the scan lines corresponding to the first line display area line by line at a preset scanning frequency (60 Hz).
  • the timing control unit controls the Source Unit1, Source Unit2, and Source Unit3 to output data voltage signals, and writes them to the corresponding pixel units for display.
  • the working process in which each pixel unit is driven is as described above and will not be described in detail herein.
  • Gate GOA2 and Gate GOA3 scan the second line display area and the third line display area, respectively, according to the same working principle.
  • the gate drive unit for driving each pixel unit in Q22 is Gate GOA2
  • the source drive unit is Source Unit2
  • the switch control line is Gate. R22
  • the timing control device only controls the Gate R22 to input a high level signal, that is, only controls the pixel unit in the Q22 display area to operate.
  • the timing control device controls the Gate GOA2 to scan the scan line corresponding to the second line display area at a preset scan frequency (60 Hz), and controls the Source Unit 2 output data voltage signal to each of the pixel units in Q22.
  • the refresh frequency in the display area Q22 is 120 Hz.
  • each pixel unit in the display area Q22 is scanned twice, the data voltage is also written twice, and the other display areas are scanned once. Therefore, the display area in which the human eye is dropped has a refresh rate twice that of the other display areas.
  • the scanning order of the display area of the second column is Q12 ⁇ Q22 ⁇ Q32 ⁇ Q22 in one frame display time, so as to achieve the effect that the refresh frequency of the display area Q22 is twice as large as other display areas.
  • the scanning order of the second column display area is Q12 ⁇ Q22 ⁇ Q32 ⁇ Q12. If it is determined that the display area of the human eye line of sight is Q12, the scanning order of the second column display area is Q12 ⁇ Q32 ⁇ Q22 ⁇ Q32.
  • the line of sight capturing unit determines which display area of the display panel the human eye line of sight is positioned, and displays different refresh frequency pictures for different display areas according to the display requirements. Therefore, the power consumption of the display itself can be effectively reduced, so that the screen can have a selective high and low refresh frequency switching, and the refresh rate can be adjusted.
  • FIG. 6 shows a schematic block diagram of a display device in accordance with an embodiment of the present disclosure.
  • display device 60 may include display panel 600 in accordance with an embodiment of the present disclosure.
  • a display device according to an embodiment of the present disclosure can realize display of different refresh frequencies in different display regions.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device of the embodiment may further include other conventional structures such as a power supply unit, a display driving unit, and the like.

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Abstract

本公开提供一种像素单元及驱动方法、显示面板及驱动方法、显示装置。根据本公开实施例的像素单元包括：驱动子电路、第一开关子电路、第二开关子电路以及发光元件；其中，驱动子电路的第一端电连接至第一电源端，第二端电连接至发光元件的第一端；第一开关子电路与第二开关子电路串联设置，第一开关子电路的输入端电连接至数据线，第一开关子电路的输出端电连接至第二开关子电路的输入端，第一开关子电路的控制端连接至扫描线；第二开关子电路的输出端电连接至驱动子电路的输入端，第一开关子电路的控制端电连接至扫描线和开关控制线中的一个，第二开关子电路的控制端电连接至扫描线和开关控制线中的另一个；第一开关子电路和第二开关子电路被配置为在扫描线上的扫描信号以及开关控制线上的开关控制信号的控制下，选择性地将数据线上的数据电压信号输入至驱动子电路以控制发光元件是否发光。

Description

像素单元及驱动方法、显示面板及驱动方法、显示装置
本申请要求于2017年6月5日提交的、申请号为201710413896.X的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开实施例涉及显示技术，具体涉及一种像素单元及驱动方法、显示面板及驱动方法、显示装置。
背景技术
通常，显示设备的画面品质越高(即显示分辨率越高)，屏幕刷新频率越高。然而高屏幕刷新频率会导致功耗的增加。一种传统技术在于通过在一帧画面内进行隔行扫描，对不需要充电的像素进行每n帧一次充电，进而达到节能的目的。例如，传统技术在栅极端接入“与门”，通过脉冲控制与门的状态，从而实现对各行的开关状态进行控制，进而达到仅扫描指定行的目的。由于需要在制造GOA时在阵列上制作“与门”，因此工艺变得复杂，不利于产品生产及良率提高。
发明内容
为此，本公开实施例提供了一种像素单元及驱动方法、显示面板及驱动方法、显示装置。
根据本公开的一个方面，提供了一种像素单元，包括：驱动子电路、第一开关子电路、第二开关子电路以及发光元件；其中，
所述驱动子电路的第一端电连接至第一电源端，第二端电连接至所述发光元件的第一端；
第一开关子电路与第二开关子电路串联设置，第一开关子电路的输入端电连接至数据线，第一开关子电路的输出端电连接至第二开关子电路的输入端，第一开关子电路的控制端连接至扫描线；第二开关子电路的输出端电连接至驱动子电路的输入端，第一开关子电路的控制端电连接至扫描线和开关控制线中的一个，第二开关子电路的控制端电连接至扫描线和开关控制线中的另一个；
其中，所述第一开关子电路和第二开关子电路被配置为在扫描线上的扫描信号以及 开关控制线上的开关控制信号的控制下，选择性地将数据线上的数据电压信号输入至驱动子电路以控制所述发光元件是否发光。
例如，所述第一开关子电路连接扫描线；所述第二开关子电路电连接至所述开关控制线，所述第二开关子电路被配置为在所述开关控制线上的开关控制信号的控制下开启或关断，以控制是否将所述数据线上的数据电压信号写入至所述发光元件。
例如，所述第一开关子电路包括开关晶体管，所述开关晶体管的第一极电连接至所述数据线，控制极电连接至所述扫描线；所述第二开关子电路包括控制晶体管，所述控制晶体管的第一极电连接至所述开关晶体管的第二极，所述控制晶体管的第二极电连接至所述驱动子电路，控制极电连接至所述开关控制线。
例如，所述驱动子电路包括：驱动晶体管，所述驱动晶体管的第一极电连接至第一电源端，第二极电连接至所述发光元件的第一端，以及控制极电连接至所述第二开关子电路的第二极；以及存储电容，所述存储电容的第一端电连接至所述第一电源端，第二端电连接至所述驱动晶体管的控制端。
例如，所述发光元件的第二端连接第二电源端。
例如，所述像素单元设置在硅基基底上。
根据本公开的另一方面，提供了一种根据本公开实施例的像素单元的驱动方法，包括：
分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启；以及
所述驱动子电路将数据线上的数据电压信号写入所述发光元件，以使所述发光元件发光。
根据本公开的另一方面，提供了一种显示面板，其包括至少一个根据本公开实施例的像素单元。
例如，所述显示面板划分为呈阵列排布的多个显示区域，其中，位于同一所述显示区域中的多个所述像素单元中的第二开关子电路电连接至同一条所述开关控制线。
例如，位于所述显示面板中的同一列的多个所述像素单元中的第二开关子电路电连接至同一条所述开关控制线。
例如，所述显示面板还包括视线捕获装置和时序控制装置，其中，所述视线捕获装置配置为捕获并跟踪人眼的视线，获取人眼视线所落入所述显示面板中的显示区域的位 置；其中，所述视线捕获装置所获取的人眼视线所落入所述显示面板中的显示区域的位置被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域；
所述时序控制装置配置为使得在一帧显示时间内，所述第一显示区域内的像素单元被写入数据电压的次数大于所述第二显示区域内的像素单元被写入数据电压的次数。
例如，所述显示面板还包括与所述时序控制装置连接的多个栅极驱动单元和多个源极驱动单元；其中，位于同一行的所述显示区域中的像素单元所连接的扫描线连接至同一个所述栅极驱动单元；以及位于同一列的所述显示区域中的像素单元所连接的数据线连接至同一个所述源极驱动单元。
例如，所述第一显示区域的刷新频率为所述第二显示区域的刷新频率的2倍。
根据本公开的另一方面，提供了一种根据本公开实施例的显示面板的驱动方法，包括：
分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启；以及
所述驱动子电路将数据线上的数据电压信号写入所述发光元件，以使所述发光元件发光。
例如，所述驱动方法还包括：在向扫描线和开关控制线输入有效工作电平信号之前，
通过视线捕获装置捕获并跟踪人眼的视线，获取人眼视线所落入显示面板中的显示区域的位置；其中，所述视线捕获装置所获取的人眼视线所落入显示面板中的显示区域的位置被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域。
例如，时序控制装置被配置为使得在一帧显示时间内，与所述第一显示区域内的像素单元所连接的扫描线开关控制线被输入有效工作电平信号的次数大于与所述第二显示区域内的像素单元所连接的扫描线和开关控制线被输入有效工作电平信号的次数；以及与所述第一显示区域内的像素单元所连接的数据线被写入数据电压的次数，大于与所述第二显示区域内的像素单元所连接的数据线被写入数据电压的次数，以使所述第一显示区域的刷新频率大于所述第二显示区域的刷新频率。
根据本公开的另一方面，提供了一种显示装置，包括根据本公开实施例的显示面板。
附图说明
图1A为根据本公开实施例的像素单元的结构示意图；
图1B为根据本公开实施例的像素单元的一个示例电路图；
图1C为根据本公开实施例的像素单元的另一个示例电路图；
图2为根据本公开实施例的像素单元的驱动方法的流程图；
图3为根据本公开实施例的显示面板的驱动方法的流程图；
图4A为根据本公开实施例的显示面板的示意方框图；
图4B为图4A中的视线捕获装置的示意方框图；
图5为根据本公开实施例的显示面板的结构示意图；以及
图6为根据本公开实施例的显示装置的示意方框图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
本公开实施例中的所采用的晶体管可以为薄膜晶体管或场效应管或其他特性的相同器件。由于采用的晶体管的源极和漏极在一定条件下是可以互换的，所以其源极、漏极从连接关系的描述上是没有区别的。在本公开实施例中，为区分晶体管的源极和漏极，将其中一极称为第一极，另一极称为第二极，栅极称为控制极。此外按照晶体管的特性区分可以将晶体管分为N型和P型，以下实施例中是以晶体管为N型晶体管进行说明的。当采用N型晶体管时，第一极为N型晶体管的漏极，第二极为N型晶体管的源极，栅极输入高电平时，源漏极导通，P型相反。可以想到的是采用晶体管为P型晶体管实现是本领域技术人员可以在没有付出创造性劳动前提下轻易想到的，因此也是在本公开实施例的保护范围内的。
由于本实施例中是以薄膜晶体管为N型晶体管为例进行说明的，因此有效工作电平信号为高电平信号。应当理解的是，如果薄膜晶体管采用为P型晶体管，则有效工作电平信号为低电平信号。
如图1A所示，本公开实施例提供了一种像素单元，包括：驱动子电路101、第一开关子电路102、第二开关子电路103以及发光元件104。所述驱动子电路101的第一端电连接至第一电源端V1，第二端电连接至所述发光元件104的第一端。所述第一开关子电路102的输入端电连接至数据线Data，第一开关子电路102的输出端电连接至第二开关子电路103的输入端，第一开关子电路102的控制端电连接至扫描线Gate L和开关控制线Gate R中的一个，第二开关子电路103的控制端电连接至扫描线Gate L和开关控制线Gate R中 的另一个。第二开关子电路的输出端电连接至驱动子电路的输入端。所述第一开关子电路102和第二开关子电路103被配置为在扫描线Gate L上的扫描信号以及开关控制线Gate R上的开关控制信号的控制下，选择性地将数据线Data上的数据电压信号输入至驱动子电路101的控制端。也就是说，尽管图中示出了第一开关子电路102的控制端电连接至扫描线Gate L，第二开关子电路103的控制端电连接至开关控制线Gate R，实质上第一开关子电路102和第二开关子电路103的位置可以互换，即，可以将第一开关子电路102的控制端电连接至开关控制线Gate R，第二开关子电路103的控制端电连接至扫描线Gate L。
根据本公开实施例，发光元件104可以是电流驱动的有机发光二极管OLED，也可以是电压驱动的例如液晶电容的发光元件，本公开实施例并不局限于此。
图1B示出了根据本公开实施例的像素单元的一个示例电路图，其中发光元件为OLED。如图1B所示，在图1B的示例中，第一开关子电路102的控制端电连接至扫描线Gate L，第二开关子电路103的控制端电连接至开关控制线Gate R。第二开关子电路103被配置为在所述开关控制线Gate R上的开关控制信号的控制下开启或关断，以控制是否将所述数据线上的数据电压信号Dada写入至发光元件OLED。第一开关子电路可以包括开关晶体管T1，所述开关晶体管T1的第一极作为第一开关子电路的输入端电连接至数据线Dada，控制极作为第一开关子电路的控制端电连接至所述扫描线Gate L。如图1B所示，第二开关子电路103可以包括控制晶体管T2，所述控制晶体管T2的第一极作为第二开关子电路的输入端电连接至所述开关晶体管T1的第二极，所述控制晶体管T2的第二极作为第二开关子电路的输出端电连接至驱动子电路，控制极作为第二开关子电路的控制端电连接至所述开关控制线Gate R。驱动子电路101可以包括驱动晶体管DTFT，所述驱动晶体管DTFT的第一极作为驱动子电路的输入端电连接至第一电源端V1，第二极作为驱动子电路的输出端电连接至发光元件的第一端，以及控制极作为驱动子电路的控制端电连接至控制晶体管的第二极。例如，第一电源端可以是电压信号Vdd。
例如，OLED元件的第二端可以连接至第二电源端V2。本领域技术人员可以理解，第二电源端V2可以是电压信号Vss，也可以接地。
本领域技术人员可以理解，以上针对OLED发光元件的像素单元的示例电路图中仅示出了一种基本的电路结构。例如，该电路还可以包括例如阈值电压补偿子电路、复位子电路、发光控制子电路等。在这种情况下，只需在开关晶体管T1的第二极与相关电路组件之间连接第二开关子电路即可。例如，如果原像素单元中开关晶体管T1的第二极与某一组件相连，根据本公开实施例，将开关晶体管T1的第二极与控制晶体管的T2的第一极 相连，并且将控制晶体管T2的第二极与所述某一组件相连接。
由于本实施例中的像素单元中设置了第二开关子电路103，当将该像素单元应用至显示面板中时，在对扫描线Gate L进行扫描时，可以在开关控制线Gate R上输入的控制信号的控制下，控制第二开关子电路103开启或关断，从而控制是否将对应数据线Data上的数据电压信号写入至例如有机电致发光二极管OLED或液晶电容的发光元件。即，通过第二开关子电路103控制是否向显示面板中的特定像素单元写入数据电压，能够根据显示面板的显示需求来实现智能显示。
在示例中，当扫描线Gate L和开关控制线Gate R均被写入高电平信号时，开关晶体管T1和控制晶体管T2均开启，此时通过数据线Data上写入的数据电压对存储电容C1进行充电，直至驱动晶体管DTFT开启，从而驱动有机电致发光二极管OLED发光。
图1C示出了根据本公开实施例的像素单元的一个示例电路图，其中发光元件为例如液晶电容的像素电容Clc。在图1C的示例中，第一开关子电路102的控制端电连接至扫描线Gate L，第二开关子电路103的控制端电连接至开关控制线Gate R。如图1C所示，第二开关子电路103被配置为在所述开关控制线Gate R上的开关控制信号的控制下开启或关断，以控制是否将所述数据线上的数据电压信号Dada写入至像素电容Clc。类似地，第一开关子电路可以包括开关晶体管T1，所述开关晶体管T1的第一极电连接至数据线Dada，控制极电连接至所述扫描线Gate L。如图1C所示，第二开关子电路103可以包括控制晶体管T2，所述控制晶体管T2的第一极连接所述开关晶体管T1的第二极，所述控制晶体管T2的第二极连接驱动子电路，控制极电连接至所述开关控制线Gate R。驱动子电路101可以包括存储电容Cst，存储电容Cst与像素电容Clc并联。
类似地，像素电容Clc的第一端可以连接至第一电源端V1，像素电容Clc的第二端可以连接至第二电源端V2。本领域技术人员可以理解，第二电源端V2可以是公共电压，也可以接地。
本领域技术人员可以理解，以上针对液晶电容发光元件的像素单元的示例电路图中仅示出了一种基本的电路结构。例如，可以在该电路中增加例如公共电压补偿子电路、复位子电路、发光控制子电路等。在这种情况下，只需在开关晶体管T1的第二极与相关电路组件之间连接第二开关子电路即可。例如，如果原像素单元中开关晶体管T1的第二极与某一组件相连，根据本公开实施例，将开关晶体管T1的第二极与控制晶体管的T2的第一极相连，并且将控制晶体管T2的第二极与所述某一组件相连接。
由于本实施例中的像素单元中设置了第二开关子电路103，当该像素单元应用至显示 面板中时，在对扫描线Gate L进行逐行时，可以在开关控制线Gate R上输入的控制信号的控制下，控制第二开关子电路103开启或关断，从而控制是否将对应数据线Data上的数据电压信号写入至例如像素电容Clc的发光元件。即，通过第二开关子电路103控制是否向显示面板中的特定像素单元是写入数据电压，能够根据显示面板的显示需求来实现智能显示。
在示例中，当扫描线Gate L和开关控制线Gate R均被写入高电平信号时，开关晶体管T1和控制晶体管T2均开启，此时通过数据线Data上写入的数据电压对存储电容Cst进行充电，从而驱动发光元件发光。
本实施例中的像素单元适用于硅基显示。可以将该像素单元形成在硅基基底上。
本公开实施例还提供了一种上述像素单元的驱动方法。图2示出了根据本公开实施例的像素单元的驱动方法的流程图。如图2所示，根据本公开实施例的像素单元的驱动方法20可以包括以下步骤。
在步骤S201，分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启。
在步骤S202，驱动子电路将数据线上的数据电压信号写入发光元件，以使所述发光元件发光。
本领域技术人员可以理解，当将根据本公开实施例的像素单元应用至显示面板时，每一个像素单元需要保持显示一帧画面的显示时间，直至下一帧画面的扫描信号的到来。在像素单元保持显示的阶段，与该像素单元连接的扫描线Gate L被输入的扫描信号为低电平信号。
本公开实施例还提供了一种显示面板，包括至少一个根据本公开实施例的像素单元。
根据本公开实施例，像素单元中设置了第二开关子电路。因此在对扫描线Gate L进行逐行扫描时，可以在开关控制线Gate R上所输入的控制信号的控制下，控制第二开关子电路开启或关断，从而控制是否将所述数据线Data上的数据电压信号写入至发光元件。因此，通过第二开关子电路控制是否将数据电压写入显示面板中的特定像素单元，从而根据显示面板的显示需求，实现智能显示。
本公开实施例还提供了一种显示面板的驱动方法。图3示出了示出了根据本公开实施例的显示面板的驱动方法的流程图。如图3所示，根据本公开实施例的显示面板的驱动方法30可以包括以下步骤。
在步骤S301，分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启。
在步骤S302，驱动子电路将数据线上的数据电压信号写入发光元件，以使所述发光元件发光。
本公开实施例还提供了一种显示面板。该显示面板划分为阵列排布的多个显示区域，在每个显示区域中设置有根据本公开实施例的像素单元。其中，位于同一显示区域中的多个像素单元中的第二开关子电路电连接至同一条所述开关控制线Gate R。也即，同一个显示区域中的像素单元由一条开关控制线Gate R控制。此外，也可以使得位于显示面板中同一列的多个像素单元中的第二开关子电路电连接至同一条所述开关控制线。
当对显示面板上的扫描线Gate L进行逐行扫描时，开关控制线Gate R被写入有效工作电平信号，则可以通过数据线Data向对应显示区域内的像素单元写入数据电压信号。因此可以选择性地向显示面板中至少部分显示区域内的像素单元写入数据电压，从而可以控制一帧显示时间内各个显示区域内的像素单元被写入数据电压的次数，进而实现不同显示区域的具有不同的刷新频率。本领域技术人员可以理解，特定显示区域被写入数据电压的次数越多，则刷新频率越高。
图4A示出了根据本公开实施例的显示面板的示意方框图。如图4A所示，显示面板还可以包括视线捕获装置411、时序控制装置412、多个源极驱动单元413和多个栅极驱动单元414。位于同一行的所述显示区域中的像素单元所连接的扫描线Gate L连接同一个所述栅极驱动单元，位于同一列的所述显示区域中的像素单元所连接的数据线Data连接同一个所述源极驱动单元。多个源极驱动单元413和多个栅极驱动单元414均与时序控制装置412连接。本领域技术人员可以理解，可以由源极驱动芯片来实现源极驱动单元413，由栅极驱动芯片来实现栅极驱动单元414，以及由时序控制器来实现时序控制装置412。
视线捕获装置411配置为捕获并跟踪人眼的视线，获取人眼视线所落入所述显示面板中的显示区域的位置。其中，视线捕获装置411所获取的人眼视线所落入所述显示面板中的显示区域的位置被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域。
图4B示出了根据本公开实施例的视线捕获装置411的一个示例方框图。如图4B所示，视线捕获装置411可以包括至少一个图像采集装置，例如瞳孔摄像头等，用于采集用户的眼部图像。例如，可以采集用户单眼或者双眼的眼部数据，包括但不限于眼部区域的可见光、 红外光等视频数据等，并将采集的眼部数据传输到处理器。处理器根据接收到的数据计算视线方向及注视点位置坐标等，并将计算结果输出到时序控制装置。本领域技术人员可以理解，图4B中的视线捕获装置仅为示例，可以由各种传统的视线捕获技术或视线跟踪技术来实现根据本公开实施例的视线捕获装置。
栅极驱动单元414配置为以预设扫描频率对其连接的扫描线逐行进行扫描。源极驱动单元413配置为向与其连接的数据线提供数据电压信号。
时序控制装置412配置为控制栅极驱动单元414和源极驱动单元413，使得在一帧显示时间内，与第一显示区域对应行的栅极驱动芯片输出扫描信号的次数大于与第二显示区域对应行的栅极驱动芯片输出扫描信号的次数；以及使得与第一显示区域对应列的源极驱动芯片输出数据电压信号的次数大于与第二显示区域对应列的源极驱动芯片输出数据电压信号的次数。因此，该时序控制装置412能够控制第一显示区域内的像素单元被写入数据电压的次数大于所述第二显示区域内的像素单元被写入数据电压的次数，以使所述第一显示区域的刷新频率大于所述第二显示区域的刷新频率。
接下来结合下述显示面板的驱动方法，对本实施例中的显示面板的结构进行说明。以第一显示区域的刷新频率为120Hz第二显示区域的刷新频率为60Hz为例进行说明。在这种情况下，第一显示区域的刷新频率为第二显示区域的刷新频率的2倍。
以图5所示的显示面板结构为例，显示面板划分为9个显示区域分别为Q11、Q12、Q13、Q21、Q22、Q23、Q31、Q32、Q33。其中，用于为第一行显示区域(Q11、Q12、Q13)中的扫描线提供扫描信号的栅极驱动单元为Gate GOA1；用于为第二行显示区域(Q21、Q22、Q23)中的扫描线提供扫描信号的栅极驱动单元为Gate GOA2；用于为第三行显示区域(Q31、Q32、Q33)中的扫描线提供扫描信号的栅极驱动单元为Gate GOA3；用于为第一列显示区域(Q11、Q21、Q31)中的数据线提供数据电压信号的源极驱动单元为Source Unit1；用于为第二列显示区域(Q12、Q22、Q32)中的数据线提供数据电压信号的源极驱动单元为Source Unit2；用于为第三列显示区域(Q13、Q23、Q33)中的数据线提供数据电压信号的源极驱动单元为Source Unit3。与显示区域Q11、Q12、Q13、Q21、Q22、Q23、Q31、Q32、Q33对应的开关控制线分别为Gate R11、Gate R12、Gate R13、Gate R21、Gate R22、Gate R23、Gate R31、Gate R32、Gate R33。
本实施例中的显示面板的驱动方法还可以包括以下步骤。
首先，通过视线捕获装置根据人眼的视线，获取人眼视线所落入显示面板中的显示区域的位置。其中，视线捕获装置所获取的人眼视线所落入显示面板中的显示区域的位置 被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域。
例如，如果视线捕获单元所获取到的人眼视线恰好落入Q22中，也即Q22为第一显示区域，其余的8个显示区域均为第二显示区域。
然后，通过时序控制装置依次向所有的开关控制线(Gate R11、Gate R12、Gate R13、Gate R21、Gate R22、Gate R23、Gate R31、Gate R32、Gate R33)输入有效工作电平信号(高电平信号)，以控制Gate GOA1、Gate GOA2、Gate GOA3逐一进行工作。
以Gate GOA1对第一行显示区域中的像素单元进行扫描为例，Gate GOA1以预设扫描频率(60Hz)对与第一行显示区域对应的扫描线逐行扫描。同时，时序控制单元控制Source Unit1、Source Unit2、Source Unit3输出数据电压信号，写入至相应的像素单元中以进行显示。而每一个像素单元被驱动的工作过程如上文所述，在此不再详细描述。
类似地，在第一行显示区域中所有扫描线扫描完成之后，Gate GOA2、Gate GOA3按照相同的工作原理分别对第二行显示区域和第三行显示区域进行扫描。
接下来，由于视线捕获装置所获取的第一显示区域为Q22，而用于驱动Q22中的各个像素单元工作的栅极驱动单元为Gate GOA2、源极驱动单元为Source Unit2、开关控制线为Gate R22，故此时时序控制装置仅控制Gate R22输入高电平信号，即仅控制Q22显示区域中的像素单元进行工作。与此同时，时序控制装置控制Gate GOA2以预设的扫描频率(60Hz)对第二行显示区域所对应的扫描线进行扫描，以及控制Source Unit2输出数据电压信号至Q22中的每一个像素单元中，此时显示区域Q22中的刷新频率为120Hz。
可以看出，在一帧显示时间内，显示区域Q22中的各个像素单元被扫描两次，数据电压也被写入两次，其他显示区域均被扫描一次。因此人眼视线所落入的显示区域的刷新频率为其他显示区域的两倍。
在上述扫描过程中，在一帧显示时间内，第二列显示区域的扫描顺序为Q12→Q22→Q32→Q22，以达到显示区域Q22的刷新频率为其它显示区域2倍的效果。类似地，如果确定人眼视线所定位的显示区域为Q12，此时第二列显示区域的扫描顺序为Q12→Q22→Q32→Q12。如果确定人眼视线所定位的显示区域为Q12，此时第二列显示区域的扫描顺序为Q12→Q32→Q22→Q32。
根据本公开实施例中的显示面板及其驱动方法，通过视线捕获单元来确定人眼视线定位在显示面板的哪一个显示区域中，按显示要求对不同的显示区域显示不同的刷新频率的画面。因此可以有效降低显示本身的功耗，使得屏幕可以有选择的高低刷新频率切换，实现刷新率可调。
本实施例还提供一种显示装置，其包括根据本公开实施例的显示面板。图6示出了根据本公开实施例的显示装置的示意方框图。如图6所示，显示装置60可以包括根据本公开实施例的显示面板600。根据本公开实施例的显示装置可以在不同显示区域实现不同刷新频率的显示。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
当然，本实施例的显示装置中还可以包括其他常规结构，如电源单元、显示驱动单元等。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为在本公开的保护范围内。

Claims (16)

  1. 一种像素单元，包括：驱动子电路、第一开关子电路、第二开关子电路以及发光元件；其中，
    所述驱动子电路的第一端电连接至第一电源端，第二端电连接至所述发光元件的第一端；
    第一开关子电路与第二开关子电路串联设置，第一开关子电路的输入端电连接至数据线，第一开关子电路的输出端电连接至第二开关子电路的输入端，第一开关子电路的控制端电连接至扫描线；
    第二开关子电路的输出端电连接至驱动子电路的输入端；
    第一开关子电路的控制端电连接至扫描线和开关控制线中的一个，第二开关子电路的控制端电连接至扫描线和开关控制线中的另一个，所述第一开关子电路和第二开关子电路被配置为在扫描线上的扫描信号以及开关控制线上的开关控制信号的控制下，选择性地将数据线上的数据电压信号输入至驱动子电路的控制端以便控制所述发光元件是否发光。
  2. 根据权利要求1所述的像素单元，其中，所述第一开关子电路连接扫描线；所述第二开关子电路电连接至所述开关控制线，所述第二开关子电路被配置为在所述开关控制线上的开关控制信号的控制下开启或关断，以控制是否将所述数据线上的数据电压信号写入至所述发光元件。
  3. 根据权利要求1或2所述的像素单元，其中，所述第一开关子电路包括开关晶体管，所述开关晶体管的第一极电连接至所述数据线，控制极电连接至所述扫描线；所述第二开关子电路包括控制晶体管，所述控制晶体管的第一极电连接至所述开关晶体管的第二极，所述控制晶体管的第二极电连接至所述驱动子电路，控制极电连接至所述开关控制线。
  4. 根据权利要求1所述的像素单元，其中，所述驱动子电路包括：
    驱动晶体管，所述驱动晶体管的第一极电连接至第一电源端，第二极电连接至所述发光元件的第一端，以及控制极电连接至所述第二开关子电路的输出端；以及
    存储电容，所述存储电容的第一端电连接至所述第一电源端，第二端电连接至所述驱动晶体管的控制极。
  5. 根据权利要求1所述的像素单元，其中，所述像素单元设置在硅基基底上。
  6. 一种如权利要求1-5中任一项所述的像素单元的驱动方法，包括：
    分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启；以及
    所述驱动子电路将数据线上的数据电压信号写入所述发光元件，以使所述发光元件发光。
  7. 一种显示面板，包括至少一个如权利要求1-5中任一项所述的像素单元。
  8. 根据权利要求7所述的显示面板，其中，所述显示面板划分为呈阵列排布的多个显示区域，其中，
    位于同一所述显示区域中的多个所述像素单元中的第二开关子电路电连接至同一条所述开关控制线。
  9. 根据权利要求8所述的显示面板，还包括视线捕获装置和时序控制装置，其中，
    所述视线捕获单元配置为捕获并跟踪人眼的视线，获取人眼视线所落入所述显示面板中的显示区域的位置；其中，所述视线捕获装置所获取的人眼视线所落入所述显示面板中的显示区域的位置被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域；
    所述时序控制装置配置为使得在一帧显示时间内，所述第一显示区域内的像素单元被写入数据电压的次数大于所述第二显示区域内的像素单元被写入数据电压的次数。
  10. 根据权利要求9所述的显示面板，还包括与所述时序控制装置连接的多个栅极驱动单元和多个源极驱动单元；其中，
    位于同一行的所述显示区域中的像素单元所连接的扫描线连接至同一个所述栅极驱动单元；
    位于同一列的所述显示区域中的像素单元所连接的数据线连接至同一个所述源极驱动单元。
  11. 根据权利要求7所述的显示面板，其中，位于所述显示面板中的同一列的多个所述像素单元中的第二开关子电路电连接至同一条所述开关控制线。
  12. 根据权利要求9所述的显示面板，其中，所述第一显示区域的刷新频率为所述第二显示区域的刷新频率的2倍。
  13. 一种如权利要求7-12中任一项所述的显示面板的驱动方法，包括：
    分别向扫描线和开关控制线输入有效工作电平信号，以使第一开关子电路和第二开关子电路均开启；以及
    所述驱动子电路将数据线上的数据电压信号写入所述发光元件，以使所述发光元件发光。
  14. 根据权利要求13所述的显示面板的驱动方法，其中，所述显示面板还包括视线捕获装置和时序控制装置，所述方法还包括：
    在向扫描线和开关控制线输入有效工作电平信号之前，通过视线捕获装置捕获并跟踪人眼的视线，获取人眼视线所落入显示面板中的显示区域的位置；其中，所述视线捕获装置所获取的人眼视线所落入显示面板中的显示区域的位置被设定为第一显示区域，除第一显示区域之外的显示区域被设定为第二显示区域。
  15. 根据权利要求14所述的显示面板的驱动方法，其中，所述方法还包括，在时序控制装置的控制下，使得在一帧显示时间内，与所述第一显示区域内的像素单元所连接的扫描线、开关控制线被输入有效工作电平信号的次数大于与所述第二显示区域内的像素单元所连接的扫描线和开关控制线被输入工作电平信号的次数；以及与所述第一显示区域内的像素单元所连接的数据线被写入数据电压的次数大于与所述第二显示区域内的像素单元所连接的数据线被写入数据电压的次数。
  16. 一种显示装置，包括权利要求7-12中任一项所述的显示面板。
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