WO2024078014A1 - 像素驱动电路、显示面板及显示装置 - Google Patents

像素驱动电路、显示面板及显示装置 Download PDF

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Publication number
WO2024078014A1
WO2024078014A1 PCT/CN2023/102793 CN2023102793W WO2024078014A1 WO 2024078014 A1 WO2024078014 A1 WO 2024078014A1 CN 2023102793 W CN2023102793 W CN 2023102793W WO 2024078014 A1 WO2024078014 A1 WO 2024078014A1
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Prior art keywords
light
transistor
voltage
electrically connected
emitting
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Ceased
Application number
PCT/CN2023/102793
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English (en)
French (fr)
Inventor
周仁杰
郑浩旋
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HKC Co Ltd
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HKC Co Ltd
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Filing date
Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to EP23876224.9A priority Critical patent/EP4597481A4/en
Priority to JP2025516292A priority patent/JP7760799B2/ja
Priority to KR1020257015410A priority patent/KR20250084211A/ko
Publication of WO2024078014A1 publication Critical patent/WO2024078014A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—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 voltage across the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0262—The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared

Definitions

  • the present application relates to the field of display technology, and in particular to a pixel driving circuit, a display panel having the pixel driving circuit, and a display device having the display panel.
  • Micro Light Emitting Diode is a new generation of display technology. It has the advantages of being lighter, thinner, brighter, lower power consumption, faster response, higher clarity, better flexibility, higher luminous efficiency and higher contrast. It can meet consumers' new requirements for display technology and is therefore widely used in various display devices, such as Micro LED display panels and Organic Light Emitting Diode (OLED) display panels.
  • the existing Micro LED display panels or OLED display panels usually use DC drive.
  • This DC drive method causes the operating temperature of the driving transistor of the pixel driving circuit to be higher, which in turn leads to a significant reduction in the life of the driving transistor and increases the overall power consumption of the display panel.
  • the purpose of the present application is to provide a pixel driving circuit, a display panel and a display device.
  • Each transistor of the pixel driving circuit can transmit voltage intermittently, and use the intermittent time to release the heat generated by the transmitted voltage, thereby reducing the operating temperature of each transistor, which is conducive to increasing the service life of each transistor.
  • the present application provides a pixel driving circuit, which includes a first driving module, a light-emitting unit, and a second driving module, wherein the first driving module and the second driving module are electrically connected to the light-emitting unit, a first power supply terminal, and a second power supply terminal, respectively, and the first driving module receives a first scanning signal and a data signal, and selectively receives a first voltage from the first power supply terminal and a second voltage from the second power supply terminal according to the first scanning signal and the data signal; or,
  • the second driving module receives a second scanning signal and the data signal, and drives the second scanning signal according to the second scanning signal.
  • the scanning signal and the data signal selectively receive the second voltage from the first power terminal and receive the first voltage from the second power terminal;
  • the first voltage and the second voltage received by the first driving module or the second driving module are used to be alternately applied to two ends of the light-emitting unit to drive the light-emitting unit to emit light.
  • the first driving module includes a first light-emitting driving circuit and a second light-emitting driving circuit, wherein the first end of the first light-emitting driving circuit is electrically connected to the first power supply end for receiving the first voltage from the first power supply end, and the second end of the first light-emitting driving circuit is electrically connected to the light-emitting unit; the first end of the second light-emitting driving circuit is electrically connected to the light-emitting unit, and the second end of the second light-emitting driving circuit is electrically connected to the second power supply end for receiving the second voltage from the second power supply end.
  • the second driving module includes a third light-emitting driving circuit and a fourth light-emitting driving circuit, wherein a first end of the third light-emitting driving circuit is electrically connected to the second power supply end for receiving the first voltage from the second power supply end, and a second end of the third light-emitting driving circuit is electrically connected to the light-emitting unit; a first end of the fourth light-emitting driving circuit is electrically connected to the first power supply end for receiving the second voltage from the first power supply end, and a second end of the fourth light-emitting driving circuit is electrically connected to the light-emitting unit.
  • the light emitting unit includes a light emitting element, the light emitting element includes a first end and a second end, and the first end and the second end of the light emitting element are electrically connected to the first driving module and the second driving module, respectively.
  • the first light-emitting driving circuit includes a first transistor and a second transistor
  • the second light-emitting driving circuit includes a third transistor
  • the control end of the first transistor is used to receive the data signal
  • the first end of the first transistor is electrically connected to the first power supply end, and is used to receive the first voltage from the first power supply end
  • the second end of the first transistor is electrically connected to the first end of the second transistor
  • the control end of the second transistor is used to receive the first scan signal
  • the second end of the second transistor is electrically connected to the first end of the light-emitting element
  • the control end of the third transistor is used to receive the first scan signal
  • the first end of the third transistor is electrically connected to the second end of the light-emitting element
  • the second end of the third transistor is electrically connected to the second power supply end, and is used to receive the second voltage from the second power supply end.
  • the third light-emitting driving circuit includes a fourth transistor and a fifth transistor
  • the fourth light-emitting driving circuit includes a sixth transistor
  • the control terminal of the fourth transistor is used to receive the The data signal
  • the first end of the fourth transistor is electrically connected to the second power supply end, for receiving the first voltage from the second power supply end
  • the second end of the fourth transistor is electrically connected to the first end of the fifth transistor
  • the control end of the fifth transistor is used to receive the second scan signal
  • the second end of the fifth transistor is electrically connected to the first end of the light-emitting element
  • the control end of the sixth transistor is used to receive the second scan signal
  • the first end of the sixth transistor is electrically connected to the second end of the light-emitting element
  • the second end of the sixth transistor is electrically connected to the first power supply end, for receiving the second voltage from the first power supply end.
  • the first transistor, the second transistor and the third transistor are all in an on state
  • the first voltage is transmitted to the first end of the light-emitting element via the first transistor and the second transistor
  • the second voltage is transmitted to the second end of the light-emitting element via the third transistor
  • the light-emitting element emits light under the drive of the first voltage and the second voltage
  • the control end of the fourth transistor receives the data signal and the second scan signal is at a first potential
  • the fourth transistor, the fifth transistor and the sixth transistor are all in an on state
  • the first voltage is transmitted to the first end of the light-emitting element via the fourth transistor and the fifth transistor
  • the second voltage is transmitted to the second end of the light-emitting element via the sixth transistor
  • the light-emitting element emits light under the drive of the first voltage and the second voltage
  • the pixel driving circuit also includes a signal short-circuiting circuit, which includes a plurality of switch sub-circuits, and the switch sub-circuits are electrically connected to the first driving module and the second driving module.
  • the switch sub-circuit short-circuits the first scanning signal and the second scanning signal.
  • the present application provides a display panel, which includes a signal controller and several of the above-mentioned pixel driving circuits, and the signal controller is used to provide a first scanning signal and a second scanning signal to the pixel driving circuit.
  • the present application provides a display device, comprising a power module and the above-mentioned display panel, wherein the power module is used to supply power to the display panel.
  • the pixel driving circuit is provided with a first driving module and a second driving module
  • the first driving module is provided with a first light-emitting driving circuit and a second light-emitting driving circuit to apply a first voltage and a second voltage to the light-emitting element respectively.
  • the third light-emitting driving circuit and the fourth light-emitting driving circuit are respectively provided in the second driving module.
  • the light-emitting element is applied with a first voltage and a second voltage.
  • the first driving module and the second driving module alternately drive the light-emitting unit to emit light. Therefore, it can be achieved that each transistor of the first driving module and the second driving module can transmit voltage intermittently, and the heat generated by the transmission voltage is released during the intermittent time, thereby reducing the operating temperature of each transistor, which is conducive to improving the service life of each transistor, and thus improving the service life of the display panel and the display device.
  • a signal shorting circuit is provided in the pixel driving circuit, and in the interval of switching the first driving module or the second driving module to drive the light-emitting unit to emit light, the signal shorting circuit shorts the first scanning signal and the second scanning signal to realize charge sharing between the first scanning signal and the second scanning signal. Therefore, the power consumption required for the potential switching of the first scanning signal and the second scanning signal can be reduced, the power consumption of the pixel driving circuit is reduced, and the power consumption of the display panel and the display device is effectively reduced.
  • FIG. 1 is a schematic diagram of a circuit structure of a pixel driving circuit disclosed in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a specific circuit structure of the pixel driving circuit shown in FIG. 1 .
  • FIG. 3 is a driving timing diagram of the pixel driving circuit shown in FIG. 2 .
  • the terms “including”, “may include”, “include”, or “may include” used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc.
  • the terms “including” or “include” indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.
  • FIG1 is a schematic diagram of a circuit structure of a pixel driving circuit 100 disclosed in an embodiment of the present application.
  • the pixel driving circuit 100 provided in the embodiment of the present application includes a first driving module 10, a second driving module 20 and a light emitting unit 30.
  • the first driving module 10 and the second driving module 20 are electrically connected to the light emitting unit 30, the first power supply terminal Vodd and the second power supply terminal Veven, respectively.
  • the first driving module 10 receives the first scanning signal Scan1 and the data signal Data, and The first scan signal Scan1 and the data signal Data selectively receive a first voltage from the first power terminal Vodd and a second voltage from the second power terminal Veven; or,
  • the second driving module 20 receives a second scan signal Scan2 and a data signal Data, and selectively receives a second voltage from the first power terminal Vodd and a first voltage from the second power terminal Veven according to the second scan signal Scan2 and the data signal Data.
  • the first voltage and the second voltage received by the first driving module 10 or the second driving module 20 are used to be applied alternately to two ends of the light emitting unit 30 to drive the light emitting unit 30 to emit light.
  • the first driving module 10 and the second driving module 20 are provided to alternately drive the light-emitting unit 30 to emit light, so that the driving components in the first driving module 10 and the second driving module 20 are driven by AC and can work intermittently, which is beneficial for the driving components to release the heat generated during operation in a timely manner, thereby effectively reducing the operating temperature of the driving components and thereby improving their service life.
  • the light-emitting unit 30 may include a light-emitting element 31, and the light-emitting element 31 includes a first end and a second end, and the first end and the second end of the light-emitting element 31 are electrically connected to the first driving module 10 and the second driving module 20, respectively.
  • the first driving module 10 and the second driving module 20 are used to apply a first voltage and a second voltage to both ends of the light-emitting element 31 to drive the light-emitting element 31 to emit light.
  • the first end of the light emitting element 31 may be an anode, and the second end of the light emitting element 31 may be a cathode, and the present application does not impose any specific limitation on this.
  • the light emitting element 31 can be an organic light emitting diode (OLED) or a micro light emitting diode (Micro LED), and the present application does not impose any specific restrictions on this.
  • OLED organic light emitting diode
  • Micro LED micro light emitting diode
  • the first driving module 10 includes a first light-emitting driving circuit 12 and a second light-emitting driving circuit 14.
  • the first light-emitting driving circuit 12 is used to provide a first voltage to the light-emitting unit 30, and the second light-emitting driving circuit 14 is used to provide a second voltage to the light-emitting unit 30.
  • the first end of the first light-emitting driving circuit 12 is electrically connected to the first power supply terminal Vodd, and is used to receive the first voltage from the first power supply terminal Vodd.
  • the second end of the first light-emitting driving circuit 12 is electrically connected to the light-emitting unit 30.
  • the first light-emitting driving circuit 12 receives the data signal Data and the first scanning signal Scan1 with a first potential, the first voltage is transmitted to the light emitting unit 30 via the first light emitting driving circuit 12. Specifically, the first voltage is transmitted to the first end of the light emitting element 31 via the first light emitting driving circuit 12.
  • the first end of the second light-emitting driving circuit 14 is electrically connected to the light-emitting unit 30, and the second end of the second light-emitting driving circuit 14 is electrically connected to the second power supply end Veven, for receiving a second voltage from the second power supply end Veven.
  • the second light-emitting driving circuit 14 receives the data signal Data and the first scan signal Scan1 having a first potential, the second voltage is transmitted to the light-emitting unit 30 via the second light-emitting driving circuit 14. Specifically, the second voltage is transmitted to the second end of the light-emitting element 31 via the second light-emitting driving circuit 14.
  • the first voltage is transmitted to the first end of the light-emitting element 31 via the first light-emitting driving circuit 12
  • the second voltage is transmitted to the second end of the light-emitting element 31 via the second light-emitting driving circuit 14.
  • the first voltage and the second voltage applied to the light-emitting element 31 can drive the light-emitting element 31 to emit light.
  • the first light-emitting driving circuit 12 may include a first transistor 12a and a second transistor 12b, which are used to receive the first voltage from the first power supply terminal Vodd and selectively transmit the first voltage to the light-emitting unit 30.
  • the first transistor 12a and the second transistor 12b are connected in series to the first power supply terminal Vodd and the first end of the light-emitting element 31.
  • the first transistor 12a and the second transistor 12b each include a control end, a first end, and a second end.
  • the control end of the first transistor 12a is used to receive the data signal Data, and the first end of the first transistor 12a is electrically connected to the first power supply terminal Vodd, and is used to receive the first voltage from the first power supply terminal Vodd.
  • the second end of the first transistor 12a is electrically connected to the first end of the second transistor 12b, and the control end of the second transistor 12b is used to receive the first scan signal Scan1, and the second end of the second transistor 12b is electrically connected to the first end of the light-emitting element 31.
  • the control end of the first transistor 12a receives the data signal Data and the first scan signal Scan1 is at the first potential, the first transistor 12a and the second transistor 12b are both in the on state, and the first voltage is transmitted to the first end of the light-emitting element 31 through the first transistor 12a and the second transistor 12b.
  • the first transistor 12a When the control terminal of the first transistor 12a receives the data signal Data and the first scan signal Scan1 is at the second potential, the first transistor 12a is in the on state and the second transistor 12a is in the on state. The transistor 12b is in a cut-off state. The first voltage cannot be transmitted from the first transistor 12a and the second transistor 12b to the first end of the light emitting element 31.
  • the second light-emitting driving circuit 14 may include a third transistor 14a, and the third transistor 14a includes a control end, a first end, and a second end.
  • the control end of the third transistor 14a is used to receive the first scan signal Scan1
  • the first end of the third transistor 14a is electrically connected to the second end of the light-emitting element 31
  • the second end of the third transistor 14a is electrically connected to the second power supply end Veven, and is used to receive a second voltage from the second power supply end Veven.
  • the third transistor 14 a When the first scan signal Scan1 received by the third transistor 14 a is at a first potential, the third transistor 14 a is in a turned-on state, and the second voltage is transmitted to the second end of the light emitting element 31 through the third transistor 14 a .
  • the third transistor 14 a When the first scan signal Scan1 received by the third transistor 14 a is at the second potential, the third transistor 14 a is in a cut-off state, and the second voltage cannot be transmitted to the second end of the light emitting element 31 through the third transistor 14 a .
  • the second driving module 20 includes a third light-emitting driving circuit 22 and a fourth light-emitting driving circuit 24.
  • the third light-emitting driving circuit 22 is used to provide a first voltage to the light-emitting unit 30, and the fourth light-emitting driving circuit 24 is used to provide a second voltage to the light-emitting unit 30.
  • the first end of the third light-emitting driving circuit 22 is electrically connected to the second power supply end Veven, and is used to receive the first voltage from the second power supply end Veven.
  • the second end of the third light-emitting driving circuit 22 is electrically connected to the light-emitting unit 30.
  • the first end of the fourth light emitting driving circuit 24 is electrically connected to the first power supply terminal Vodd, and is used to receive the second voltage from the first power supply terminal Vodd.
  • the second end of the fourth light emitting driving circuit 24 is electrically connected to the light emitting unit 30.
  • the first voltage is transmitted to the light emitting element 31 via the third light emitting driving circuit 22.
  • the second voltage is transmitted to the first end of the light emitting element 31 through the fourth light emitting driving circuit 24, and the first voltage and the second voltage applied to the light emitting element 31 can drive the light emitting element 31 to emit light.
  • the third light-emitting driving circuit 22 may include a fourth transistor 22a and a fifth transistor 22b, which are used to receive the first voltage from the second power supply terminal Veven and selectively transmit the first voltage to the light-emitting unit 30.
  • the fourth transistor 22a and the fifth transistor 22b are connected in series to the second power supply terminal Veven and the first end of the light-emitting element 31.
  • the fourth transistor 22a and the fifth transistor 22b each include a control end, a first end, and a second end.
  • the control end of the fourth transistor 22a is used to receive the data signal Data, and the first end of the fourth transistor 22a is electrically connected to the second power supply terminal Veven, and is used to receive the first voltage from the second power supply terminal Veven.
  • the second end of the fourth transistor 22a is electrically connected to the first end of the fifth transistor 22b, and the control end of the fifth transistor 22b is used to receive the second scan signal Scan2, and the second end of the fifth transistor 22b is electrically connected to the first end of the light-emitting element 31.
  • the fourth transistor 22a and the fifth transistor 22b are both in the on state, and the first voltage is transmitted to the first end of the light-emitting element 31 through the fourth transistor 22a and the fifth transistor 22b.
  • the fourth transistor 22a When the control end of the fourth transistor 22a receives the data signal Data and the second scan signal Scan2 is at the second potential, the fourth transistor 22a is in the on state and the fifth transistor 22b is in the off state, and the first voltage cannot be transmitted to the first end of the light-emitting element 31 through the fourth transistor 22a and the fifth transistor 22b.
  • the fourth light-emitting driving circuit 24 may include a sixth transistor 24a, and the sixth transistor 24a includes a control end, a first end, and a second end.
  • the control end of the sixth transistor 24a is used to receive the second scan signal Scan2
  • the first end of the sixth transistor 24a is electrically connected to the second end of the light-emitting element 31
  • the second end of the sixth transistor 24a is electrically connected to the first power supply end Vodd, and is used to receive the second voltage from the first power supply end Vodd.
  • the sixth transistor 24 a When the second scan signal Scan2 received by the sixth transistor 24 a is at the first potential, the sixth transistor 24 a is in a turned-on state, and the second voltage is transmitted to the second end of the light emitting element 31 through the sixth transistor 24 a .
  • the sixth transistor 24 a When the second scan signal Scan2 received by the sixth transistor 24 a is at the second potential, the sixth transistor 24 a is in a cut-off state, and the second voltage cannot be transmitted to the second end of the light emitting element 31 through the sixth transistor 24 a .
  • the first transistor 12a, the second transistor 12b, the third transistor 14a, the fourth transistor 22a, the fifth transistor 22b and the sixth transistor 24a can all be metal-oxide-semiconductor field-effect transistors (MOSFET), MOS tubes for short, or metal-oxide-semiconductor field-effect transistors.
  • MOSFET metal-oxide-semiconductor field-effect transistors
  • the first transistor 12a, the second transistor 12b, the third transistor 14a, the fourth transistor 22a, the fifth transistor 22b and the sixth transistor 24a can be N-type MOS tubes or P-type transistors, and the present application does not make specific restrictions on this.
  • the first end may be the drain (D) of each transistor
  • the second end may be the source (S) of each transistor
  • the control end may be the gate (G) of each transistor
  • the first potential may be a high potential
  • the second potential may be a low potential
  • a first driving module 10 and a second driving module 20 are provided, and a first light-emitting driving circuit 12 and a second light-emitting driving circuit 14 are provided in the first driving module 10 to apply a first voltage and a second voltage to the first end and the second end of the light-emitting element 31, respectively.
  • a third light-emitting driving circuit 22 and a fourth light-emitting driving circuit 24 are provided in the second driving module 20 to apply a first voltage and a second voltage to the first end and the second end of the light-emitting element 31, respectively.
  • the first driving module 10 and the second driving module 20 apply the first voltage and the second voltage to the light-emitting element 31 in turn, so as to drive the light-emitting unit 30 to emit light.
  • the transistors of the first driving module 10 and the second driving module 20 can transmit voltage intermittently, and use the intermittent time to release the heat generated by the transmission voltage, thereby reducing the operating temperature of each transistor. Further, it is conducive to improving the service life of each transistor.
  • the first power supply end Vodd is used to transmit the first voltage
  • the second power supply end Veven is used to transmit the second voltage.
  • the control end of the fourth transistor 22a receives the data signal Data and the second scan signal Scan2 is at the second potential
  • the first power supply end Vodd is used to transmit the second voltage
  • the second power supply end Veven is used to transmit the second voltage.
  • the second power supply terminal Veven is used to transmit the first voltage.
  • FIG. 1 and FIG. 2 Please refer to FIG. 1 and FIG. 2 together. Next, the working process of the pixel driving circuit 100 will be generally described.
  • the first transistor 12a, the second transistor 12b, and the third transistor 14a are all in a conducting state, the first voltage is transmitted to the first end of the light emitting element 31 via the first transistor 12a and the second transistor 12b, and the second voltage is transmitted to the second end of the light emitting element 31 via the third transistor 14a. At this time, the light emitting element 31 emits light under the drive of the first driving module 10.
  • the fourth transistor 22a, the fifth transistor 22b, and the sixth transistor 24a are all in the on state, the first voltage is transmitted to the first end of the light emitting element 31 via the fourth transistor 22a and the fifth transistor 22b, and the second voltage is transmitted to the second end of the light emitting element 31 via the sixth transistor 24a. At this time, the light emitting element 31 emits light under the drive of the second driving module 20.
  • the first driving module 10 and the second driving module 20 drive the light emitting unit 30 to emit light in turn.
  • the pixel driving circuit 100 may further include a signal shorting circuit 50, and the signal shorting circuit 50 is electrically connected to both the first driving module 10 and the second driving module 20.
  • the signal shorting circuit 50 shorts the first scanning signal Scan1 and the second scanning signal Scan2 to achieve charge sharing between the first scanning signal Scan1 and the second scanning signal Scan2. In this way, the power consumption required for the potential switching of the first scanning signal Scan1 and the second scanning signal Scan2 can be further reduced, thereby reducing the power consumption of the pixel driving circuit 100.
  • the so-called charge sharing is to short-circuit the first potential and the second potential together during the period when the scanning signal switches between high and low levels, that is, during the period when the first potential switches to the second potential. Then, the speed at which the first potential changes to the second potential is accelerated, and at the same time, the speed at which the second potential changes to the first potential is also accelerated. When this frequency reaches the preset frequency value, the power consumption of the light-emitting unit can be effectively saved.
  • FIG. 2 only schematically shows the electrical connection relationship between the circuits and does not limit Functions of the number and physical position of each component.
  • the first scanning signal Scan1 transmitted to the second transistor 12b and the first scanning signal Scan1 transmitted to the third transistor 14a can be provided by one signal controller or two signal controllers, and this application does not impose any specific limitation on this.
  • the second scan signal Scan2 transmitted to the fifth transistor 22b and the sixth transistor 24a may be provided by one signal controller or provided by two signal controllers respectively, and the present application does not impose any specific limitation on this.
  • the signal shorting circuit 50 may include a plurality of switch subcircuits.
  • the signal shorting circuit 50 includes a switch subcircuit, and the switch subcircuit includes a control end, a first end, and a second end.
  • the control end of the switch subcircuit is used to receive the third scan signal Scan3, the first end of the switch subcircuit is electrically connected to the control end of the second transistor 12b and the control end of the third transistor 14a, and the second end of the switch subcircuit is electrically connected to the control end of the fifth transistor 22b and the control end of the sixth transistor 24a, so as to short-circuit the first scan signal Scan1 and the second scan signal Scan2.
  • the first driving module 10 and the second driving module 20 provide the first voltage and the second voltage to the light emitting unit 30 in turn, under the control of the first scanning signal Scan1 and the second scanning signal Scan2, the potentials of the first driving module 10 and the second driving module 20 when switching to provide voltages to the light emitting unit 30 in turn are opposite. Therefore, when the first scanning signal Scan1 and the second scanning signal Scan2 are short-circuited, the power consumption of the potential switching of the first scanning signal Scan1 and the second scanning signal Scan2 can be effectively reduced.
  • the first scanning signal Scan1 is at the first potential
  • the second scanning signal Scan2 is at the second potential.
  • the first scanning signal Scan1 and the second scanning signal Scan2 are short-circuited, and the first scanning signal Scan1 transfers the charge at the first potential to the second scanning signal Scan2, so that the potential of the first scanning signal Scan1 is reduced, and the potential of the second scanning signal Scan2 is increased, thereby effectively reducing the power consumption of the potential conversion.
  • the signal short-circuit circuit 50 includes two switch sub-circuits, which can be defined as a first switch sub-circuit 52 and a second switch sub-circuit 54, respectively.
  • the first switch sub-circuit 52 and the second switch sub-circuit 54 both include a control end, a first end, and a second end.
  • control end of the first switch subcircuit 52 is used to receive the third scan signal Scan3, the first end of the first switch subcircuit 52 is electrically connected to the control end of the third transistor 14a, and the second end of the first switch subcircuit 52 is electrically connected to the control end of the sixth transistor 24a.
  • the control end of the second switch subcircuit 54 is used to receive the third scan signal Scan3, the first end of the second switch subcircuit 54 is electrically connected to the control end of the fifth transistor 22b, and the second end of the second switch subcircuit 54 is electrically connected to the control end of the second transistor 12b.
  • the first driving module 10 and the second driving module 20 provide the first voltage and the second voltage to the light-emitting unit 30 in turn, under the control of the first scanning signal Scan1 and the second scanning signal Scan2, the potentials of the first driving module 10 and the second driving module 20 when switching to provide voltages to the light-emitting unit 30 in turn are opposite. Therefore, when the first scanning signal Scan1 and the second scanning signal Scan2 are short-circuited, the power consumption of the potential switching of the first scanning signal Scan1 and the second scanning signal Scan2 can be effectively reduced.
  • the first switch subcircuit 52 may include a first sharing transistor 52a
  • the second switch subcircuit 54 may include a second sharing transistor 54a.
  • the control end of the first sharing transistor 52a is used to receive the third scan signal Scan3.
  • the first end of the first sharing transistor 52a is electrically connected to the control end of the third transistor 14a
  • the second end of the first sharing transistor 52a is electrically connected to the control end of the sixth transistor 24a.
  • the control end of the second sharing transistor 54a is used to receive the third scan signal Scan3, the first end of the second sharing transistor 54a is electrically connected to the control end of the fifth transistor 22b, and the second end of the second sharing transistor 54a is electrically connected to the control end of the second transistor 12b.
  • FIG3, is a driving timing diagram of the pixel driving circuit 100 shown in FIG2.
  • the curve corresponding to the data signal Data is the timing of the data signal Data
  • the curve corresponding to the first scanning signal Scan1 is the timing of the first scanning signal Scan1
  • the curve corresponding to the second scanning signal Scan2 is the timing of the second scanning signal Scan2.
  • the first scanning signal Scan1 corresponds to two curves, which represent the first scanning signal transmitted to the second transistor 12b and the first scanning signal transmitted to the third transistor 14a in the pixel driving circuit 100.
  • the signal Scan1 is provided by two signal controllers, so there are two curves, but because of the same function, the timing of the two curves is the same.
  • the second scanning signal Scan2 corresponds to two curves, which means that in the pixel driving circuit 100, the second scanning signal Scan2 transmitted to the fifth transistor 22b and the second scanning signal Scan2 transmitted to the sixth transistor 24a are provided by two signal controllers, so there are two curves, but because of the same function, the timing of the two curves is the same.
  • the magnitude of the data signal Data corresponds to adjusting the magnitude of the current flowing through the light emitting element 31 , that is, adjusting the brightness of the light emitting element 31 .
  • the high and low potentials of the data signal Data correspond to different brightness of the light emitting element 31 .
  • the first scanning signal Scan1 and the second scanning signal Scan2 are at opposite first and second potentials, which reflects that the first driving module 10 and the second driving module 20 drive the light emitting unit 30 to emit light alternately.
  • the timing starts, and the first driving module 10 drives the light emitting unit 30 to emit light.
  • the left end point of the t1 period indicates that the pixel driving circuit 100 is ready to switch from the first driving module 10 to the second driving module 20 to drive the light emitting unit 30 to emit light.
  • the signal shorting circuit 50 shorts the first scanning signal Scan1 and the second scanning signal Scan2 to realize the charge sharing between the first scanning signal Scan1 and the second scanning signal Scan2.
  • the first scanning signal Scan1 and the second scanning signal Scan2 complete the charge sharing, and the potentials of the two tend to the middle position between the first potential and the second potential.
  • the first scanning signal Scan1 and the second scanning signal Scan2 are both at a position tending to be in the middle between the first potential and the second potential and remain unchanged.
  • the signal controller outputs the second scan signal Scan2 to make the second scan signal Scan2 continuously rise to the first potential.
  • the second driving module 20 drives the light emitting unit 30 to emit light.
  • the first scanning signal Scan1 is at the second potential.
  • the first driving module 10 and the second driving module 20 alternately drive the light emitting unit 30 to emit light.
  • the embodiment of the present application also discloses a display panel, wherein the display panel comprises Several of the above-mentioned pixel driving circuits 100 and signal controllers.
  • the signal controller is used to provide the pixel driving circuit 100 with a first scanning signal Scan1 and a second scanning signal Scan2.
  • an embodiment of the present application further discloses a display device, which includes the above-mentioned display panel and a power module, and the power module is used to supply power to the display panel to display an image.
  • the pixel driving circuit 100 is provided with a first driving module 10 and a second driving module 20, and the first driving module 10 is provided with a first light-emitting driving circuit 12 and a second light-emitting driving circuit 14 to apply a first voltage and a second voltage to the first end and the second end of the light-emitting element 31, respectively.
  • the third light-emitting driving circuit 22 and the fourth light-emitting driving circuit 24 are provided in the second driving module 20 to apply a first voltage and a second voltage to the first end and the second end of the light-emitting element 31, respectively.
  • each transistor of the first driving module 10 and the second driving module 20 can intermittently transmit voltage, and use the intermittent time to release the heat generated by the transmission voltage, thereby reducing the operating temperature of each transistor, which is conducive to improving the service life of each transistor, and thus improving the service life of the display panel and the display device.
  • a signal shorting circuit 50 is provided in the pixel driving circuit 100.
  • the signal shorting circuit 50 shorts the first scanning signal Scan1 and the second scanning signal Scan2 to realize the charge sharing between the first scanning signal Scan1 and the second scanning signal Scan2. Therefore, the power consumption required for the potential switching of the first scanning signal Scan1 and the second scanning signal Scan2 can be reduced, the power consumption of the pixel driving circuit 100 is reduced, and the power consumption of the display panel and the display device is effectively reduced.

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Abstract

一种像素驱动电路（100）、显示面板及显示装置。像素驱动电路（100）的第一驱动模块（10）接收并根据第一扫描信号（Scan1）和数据信号（Data）选择性自第一电源端（Vodd）接收第一电压以及自第二电源端（Veven）接收第二电压；第二驱动模块（20）接收并根据第二扫描信号（Scan2）和数据信号（Data）选择性自第一电源端（Vodd）接收第二电压以及自第二电源端（Veven）接收第一电压。第一驱动模块（10）和第二驱动模块（20）接收的第一电压和第二电压用于交替施加于发光单元（30）两端，以驱动发光单元（30）发光。像素驱动电路（100）内各自的驱动元器件采用交流驱动，可以间歇性工作，有利于驱动元器件及时地释放工作时产生的热量，从而能够有效减少驱动元器件的工作温度，进而提升使用寿命。

Description

像素驱动电路、显示面板及显示装置
本申请要求于2022年10月12日提交至中国知识产权局，申请号为202211248819.0，申请名称为“像素驱动电路、显示面板及显示装置”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
本申请涉及显示技术领域，尤其涉及一种像素驱动电路、一种具有该像素驱动电路的显示面板以及一种具有该显示面板的显示装置。
背景技术
微米发光二极管(Micro Light Emitting Diode，Micro LED)作为新一代显示技术，其具有更轻薄、亮度高、功耗低、响应快、清晰度高、柔性好、发光效率高、对比度高等优势，能满足消费者对显示技术的新要求，因此被广泛应用于各种显示装置，例如Micro LED显示面板、有机发光二极管(Organic Light Emitting Diode，OLED)显示面板等。
然而，现有技术的Micro LED显示面板或OLED显示面板通常采用直流驱动，这种直流驱动方式造成像素驱动电路的驱动晶体管工作温度较高，进而导致驱动晶体管的寿命明显降低，而且会增加显示面板的整体功耗。
发明内容
鉴于现有技术的不足，本申请的目的在于提供一种像素驱动电路、显示面板及显示装置。像素驱动电路的各个晶体管可以间歇传输电压，利用间歇时间释放传输电压产生的热量，进而降低各个晶体管的工作温度，有利于提升各个晶体管的使用寿命。
第一方面，本申请提供了一种像素驱动电路，其包括第一驱动模块、发光单元和第二驱动模块，所述第一驱动模块和所述第二驱动模块分别电性连接至所述发光单元、第一电源端和第二电源端，所述第一驱动模块接收第一扫描信号和数据信号，并根据所述第一扫描信号和所述数据信号选择性自所述第一电源端接收第一电压以及自所述第二电源端接收第二电压；或者，
所述第二驱动模块接收第二扫描信号和所述数据信号，并根据所述第二扫 描信号和所述数据信号选择性自所述第一电源端接收所述第二电压以及自所述第二电源端接收所述第一电压；
所述第一驱动模块或所述第二驱动模块接收的所述第一电压和所述第二电压用于交替施加于所述发光单元的两端，以驱动所述发光单元发光。
在一些实施方式中，所述第一驱动模块包括第一发光驱动电路和第二发光驱动电路，所述第一发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一发光驱动电路的第二端电性连接至所述发光单元；所述第二发光驱动电路的第一端电性连接至所述发光单元，所述第二发光驱动电路的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
在一些实施方式中，所述第二驱动模块包括第三发光驱动电路和第四发光驱动电路，所述第三发光驱动电路的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第三发光驱动电路的第二端电性连接至所述发光单元；所述第四发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压，所述第四发光驱动电路的第二端电性连接至所述发光单元。
在一些实施方式中，所述发光单元包括发光元件，所述发光元件包括第一端和第二端，所述发光元件的第一端和第二端分别电性连接至所述第一驱动模块和所述第二驱动模块。
在一些实施方式中，所述第一发光驱动电路包括第一晶体管和第二晶体管，所述第二发光驱动电路包括第三晶体管，所述第一晶体管的控制端用于接收所述数据信号，所述第一晶体管的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一晶体管的第二端电性连接至所述第二晶体管的第一端，所述第二晶体管的控制端用于接收所述第一扫描信号，所述第二晶体管的第二端电性连接至所述发光元件的第一端；所述第三晶体管的控制端用于接收所述第一扫描信号，所述第三晶体管的第一端电性连接至所述发光元件的第二端，所述第三晶体管的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
在一些实施方式中，所述第三发光驱动电路包括第四晶体管和第五晶体管，所述第四发光驱动电路包括第六晶体管，所述第四晶体管的控制端用于接收所 述数据信号，所述第四晶体管的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第四晶体管的第二端电性连接至所述第五晶体管的第一端，所述第五晶体管的控制端用于接收所述第二扫描信号，所述第五晶体管的第二端电性连接至所述发光元件的第一端；所述第六晶体管的控制端用于接收所述第二扫描信号，所述第六晶体管的第一端电性连接至所述发光元件的第二端，所述第六晶体管的第二端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压。
在一些实施方式中，当所述第一晶体管的控制端接收到所述数据信号且所述第一扫描信号处于第一电位时，所述第一晶体管、所述第二晶体管和所述第三晶体管均处于导通状态，所述第一电压经所述第一晶体管和所述第二晶体管传输至所述发光元件的第一端，所述第二电压经所述第三晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光；当第四晶体管的控制端接收到所述数据信号且所述第二扫描信号处于第一电位时，所述第四晶体管、所述第五晶体管和所述第六晶体管均处于导通状态，所述第一电压经所述第四晶体管和所述第五晶体管传输至所述发光元件的第一端，所述第二电压经所述第六晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光。
在一些实施方式中，所述像素驱动电路还包括信号短接电路，所述信号短接电路包括若干开关子电路，所述开关子电路与所述第一驱动模块和第二驱动模块均电性连接，在所述第一驱动模块和所述第二驱动模块切换驱动所述发光单元发光时，所述开关子电路将所述第一扫描信号和所述第二扫描信号短接。
第二方面，本申请提供了一种显示面板，所述显示面板包括信号控制器以及若干上述的像素驱动电路，所述信号控制器用于为所述像素驱动电路提供第一扫描信号和第二扫描信号。
第三方面，本申请提供了一种显示装置，所述显示装置包括电源模组以及上述的显示面板，所述电源模组用于为所述显示面板供电。
综上所述，在本申请的像素驱动电路、显示面板和显示装置中，像素驱动电路设置第一驱动模块和第二驱动模块，第一驱动模块中设置第一发光驱动电路和第二发光驱动电路分别为所述发光元件施加第一电压和第二电压。
在第二驱动模块中设置第三发光驱动电路和第四发光驱动电路分别为所述 发光元件施加第一电压和第二电压。通过控制传输至所述第一驱动模块的第一扫描信号和传输至所述第二驱动模块的第二扫描信号的电位情况，使得所述第一驱动模块和所述第二驱动模块交替驱动所述发光单元发光。因此，可以实现第一驱动模块和所述第二驱动模块的各个晶体管可以间歇传输电压，利用间歇时间释放传输电压产生的热量，进而降低各个晶体管的工作温度，有利于提升各个晶体管的使用寿命，进而提高显示面板和显示装置的使用寿命。
此外，在所述像素驱动电路中设置信号短接电路，在切换第一驱动模块或第二驱动模块驱动所述发光单元发光的间隙，所述信号短接电路将所述第一扫描信号和所述第二扫描信号短接，以实现所述第一扫描信号和所述第二扫描信号之间的电荷分享。因此，可以减少第一扫描信号和所述第二扫描信号的电位切换所需的功耗，降低所述像素驱动电路的功耗，进而有效降低显示面板和显示装置的功耗。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例公开的一种像素驱动电路的电路结构示意图。
图2为图1所示的像素驱动电路的具体电路结构示意图。
图3为图2所示的像素驱动电路的驱动时序图。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施方式。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本申请的公开内容理解的更加透彻全面。
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无 特别说明，均包括直接和间接连接(联接)。本申请中所提到的方向用语，例如，“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向，因此，使用的方向用语是为了更好、更清楚地说明及理解本申请，而不是指示或暗指所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸地连接，或者一体地连接；可以是机械连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。需要说明的是，本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，本申请中使用的术语“包括”、“可以包括”、“包含”、或“可以包含”表示公开的相应功能、操作、元件等的存在，并不限制其他的一个或多个更多功能、操作、元件等。此外，术语“包括”或“包含”表示存在说明书中公开的相应特征、数目、步骤、操作、元素、部件或其组合，而并不排除存在或添加一个或多个其他特征、数目、步骤、操作、元素、部件或其组合，意图在于覆盖不排他的包含。还需要理解的是，本文中描述的“至少一个”的含义是一个及其以上，例如一个、两个或三个等，而“多个”的含义是至少两个，例如两个或三个等，除非另有明确具体的限定。本申请的说明书和权利要求书及所述附图中的术语“步骤1”、“步骤2”等是用于区别不同对象，而不是用于描述特定顺序。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。
请参阅图1，图1为本申请实施例公开的一种像素驱动电路100的电路结构示意图。如图1所示，本申请实施例提供的像素驱动电路100包括第一驱动模块10、第二驱动模块20和发光单元30。其中，所述第一驱动模块10和所述第二驱动模块20分别电性连接至所述发光单元30、第一电源端Vodd和第二电源端Veven。
所述第一驱动模块10接收第一扫描信号Scan1和数据信号Data，并根据所 述第一扫描信号Scan1和所述数据信号Data选择性自所述第一电源端Vodd接收第一电压以及自所述第二电源端Veven接收第二电压；或，
所述第二驱动模块20接收第二扫描信号Scan2和数据信号Data，并根据所述第二扫描信号Scan2和所述数据信号Data选择性自所述第一电源端Vodd接收第二电压以及自所述第二电源端Veven接收第一电压。
所述第一驱动模块10或所述第二驱动模块20接收的所述第一电压和所述第二电压用于轮流交替施加于所述发光单元30的两端，以驱动所述发光单元30发光。
在本申请实施例中，通过设置所述第一驱动模块10和所述第二驱动模块20，以轮流交替驱动所述发光单元30发光，使得所述第一驱动模块10和所述第二驱动模块20内各自的驱动元器件采用交流驱动，可以间歇性工作，有利于驱动元器件及时地释放工作时产生的热量，从而能够有效减少驱动元器件的工作温度，进而提升其使用寿命。
请一并参阅图2，图2为图1所示的像素驱动电路100的具体电路结构示意图。在本申请实施例中，所述发光单元30可以包括发光元件31，所述发光元件31包括第一端和第二端，所述发光元件31的第一端和第二端分别电性连接至所述第一驱动模块10和所述第二驱动模块20。所述第一驱动模块10和所述第二驱动模块20用于向所述发光元件31的两端施加第一电压和第二电压，以驱动所述发光元件31发光。
在本申请具体实施例中，所述发光元件31的第一端可以为阳极，所述发光元件31的第二端可以为阴极，本申请对此不做具体限制。
在本申请具体实施例中，所述发光元件31可以为有机发光二极管(Organic Light Emitting Diode，OLED)或微米发光二极管(Micro Light Emitting Diode，Micro LED)，本申请对此不做具体限制。
在本申请实施例中，所述第一驱动模块10包括第一发光驱动电路12和第二发光驱动电路14。所述第一发光驱动电路12用于为所述发光单元30提供第一电压，所述第二发光驱动电路14用于为所述发光单元30提供第二电压。
其中，所述第一发光驱动电路12的第一端电性连接至所述第一电源端Vodd，用于自所述第一电源端Vodd接收第一电压，所述第一发光驱动电路12的第二端电性连接至所述发光单元30。当所述第一发光驱动电路12接收所述数据信号 Data和具有第一电位的所述第一扫描信号Scan1时，所述第一电压经所述第一发光驱动电路12传输至所述发光单元30。具体地，所述第一电压经所述第一发光驱动电路12传输至所述发光元件31的第一端。
所述第二发光驱动电路14的第一端电性连接至所述发光单元30，所述第二发光驱动电路14的第二端电性连接至所述第二电源端Veven，用于自所述第二电源端Veven接收第二电压。当所述第二发光驱动电路14接收所述数据信号Data和具有第一电位的所述第一扫描信号Scan1时，所述第二电压经所述第二发光驱动电路14传输至所述发光单元30。具体地，所述第二电压经所述第二发光驱动电路14传输至所述发光元件31的第二端。
此时，所述第一电压经所述第一发光驱动电路12传输至所述发光元件31的第一端，所述第二电压经所述第二发光驱动电路14传输至所述发光元件31的第二端，施加于所述发光元件31的所述第一电压和所述第二电压可以驱动所述发光元件31发光。
如图2所示，在本申请具体实施例中，所述第一发光驱动电路12可以包括第一晶体管12a和第二晶体管12b，用于自所述第一电源端Vodd接收所述第一电压，并将所述第一电压选择性传输至所述发光单元30。所述第一晶体管12a和所述第二晶体管12b串联连接于所述第一电源端Vodd和所述发光元件31的第一端。具体而言，所述第一晶体管12a和所述第二晶体管12b均包括控制端、第一端和第二端。所述第一晶体管12a的控制端用于接收所述数据信号Data，所述第一晶体管12a的第一端电性连接至所述第一电源端Vodd，用于自所述第一电源端Vodd接收所述第一电压。所述第一晶体管12a的第二端电性连接至所述第二晶体管12b的第一端，所述第二晶体管12b的控制端用于接收所述第一扫描信号Scan1，所述第二晶体管12b的第二端电性连接至所述发光元件31的第一端。
当所述第一晶体管12a的控制端接收到所述数据信号Data，且所述第一扫描信号Scan1处于所述第一电位时，所述第一晶体管12a和所述第二晶体管12b均处于导通状态，所述第一电压经所述第一晶体管12a和所述第二晶体管12b传输至所述发光元件31的第一端。
当所述第一晶体管12a的控制端接收到所述数据信号Data，且所述第一扫描信号Scan1处于第二电位时，所述第一晶体管12a处于导通状态，所述第二晶 体管12b处于截止状态。所述第一电压无法自所述第一晶体管12a和所述第二晶体管12b传输至所述发光元件31的第一端。
在本申请具体实施例中，所述第二发光驱动电路14可以包括第三晶体管14a，所述第三晶体管14a包括控制端、第一端和第二端，所述第三晶体管14a的控制端用于接收所述第一扫描信号Scan1，所述第三晶体管14a的第一端电性连接至所述发光元件31的第二端，所述第三晶体管14a的第二端电性连接至所述第二电源端Veven，用于自所述第二电源端Veven接收第二电压。
当所述第三晶体管14a接收的所述第一扫描信号Scan1处于第一电位时，所述第三晶体管14a处于导通状态，所述第二电压经所述第三晶体管14a传输至所述发光元件31的第二端。
当所述第三晶体管14a接收的所述第一扫描信号Scan1处于第二电位时，所述第三晶体管14a处于截止状态，所述第二电压无法经所述第三晶体管14a传输至所述发光元件31的第二端。
如图2所示，在本申请实施例中，所述第二驱动模块20包括第三发光驱动电路22和第四发光驱动电路24。所述第三发光驱动电路22用于为所述发光单元30提供第一电压，所述第四发光驱动电路24用于为所述发光单元30提供第二电压。
其中，所述第三发光驱动电路22的第一端电性连接至所述第二电源端Veven，用于自所述第二电源端Veven接收第一电压，所述第三发光驱动电路22的第二端电性连接至所述发光单元30。当所述第三发光驱动电路22接收所述数据信号Data和具有第一电位的第二扫描信号Scan2时，所述第一电压经所述第三发光驱动电路22传输至所述发光单元30。具体地，所述第一电压经所述第三发光驱动电路22传输至所述发光元件31的第一端。
所述第四发光驱动电路24的第一端电性连接至所述第一电源端Vodd，用于自所述第一电源端Vodd接收第二电压，所述第四发光驱动电路24的第二端电性连接至所述发光单元30。当所述第四发光驱动电路24接收所述数据信号Data和具有第一电位的第二扫描信号Scan2时，所述第二电压经所述第四发光驱动电路24传输至所述发光单元30。具体地，所述第二电压经所述第四发光驱动电路24传输至所述发光元件31的第二端。
此时，所述第一电压经所述第三发光驱动电路22传输至所述发光元件31 的第一端，所述第二电压经所述第四发光驱动电路24传输至所述发光元件31的第二端，施加于所述发光元件31的所述第一电压和所述第二电压可以驱动所述发光元件31发光。
如图2所示，在本申请具体实施例中，所述第三发光驱动电路22可以包括第四晶体管22a和第五晶体管22b，用于自所述第二电源端Veven接收所述第一电压，并将所述第一电压选择性传输至所述发光单元30。所述第四晶体管22a和所述第五晶体管22b串联连接于所述第二电源端Veven和所述发光元件31的第一端。具体而言，所述第四晶体管22a和所述第五晶体管22b均包括控制端、第一端和第二端。其中，所述第四晶体管22a的控制端用于接收所述数据信号Data，所述第四晶体管22a的第一端电性连接至所述第二电源端Veven，用于自所述第二电源端Veven接收所述第一电压。所述第四晶体管22a的第二端电性连接至所述第五晶体管22b的第一端，所述第五晶体管22b的控制端用于接收所述第二扫描信号Scan2，所述第五晶体管22b的第二端电性连接至所述发光元件31的第一端。
当所述第四晶体管22a的控制端接收到所述数据信号Data，且所述第二扫描信号Scan2处于第一电位时，所述第四晶体管22a和所述第五晶体管22b均处于导通状态，所述第一电压经所述第四晶体管22a和所述第五晶体管22b传输至所述发光元件31的第一端。
当所述第四晶体管22a的控制端接收到所述数据信号Data，且所述第二扫描信号Scan2处于第二电位时，所述第四晶体管22a处于导通状态，所述第五晶体管22b处于截止状态，所述第一电压无法经所述第四晶体管22a和所述第五晶体管22b传输至所述发光元件31的第一端。
如图2所示，在本申请具体实施例中，所述第四发光驱动电路24可以包括第六晶体管24a，所述第六晶体管24a包括控制端、第一端和第二端，所述第六晶体管24a的控制端用于接收所述第二扫描信号Scan2，所述第六晶体管24a的第一端电性连接至所述发光元件31的第二端，所述第六晶体管24a的第二端电性连接至所述第一电源端Vodd，用于自所述第一电源端Vodd接收第二电压。
当所述第六晶体管24a接收的所述第二扫描信号Scan2处于第一电位时，所述第六晶体管24a处于导通状态，所述第二电压经所述第六晶体管24a传输至所述发光元件31的第二端。
当所述第六晶体管24a接收的所述第二扫描信号Scan2处于第二电位时，所述第六晶体管24a处于截止状态，所述第二电压无法经所述第六晶体管24a传输至所述发光元件31的第二端。
在本申请实施例中，所述第一晶体管12a、第二晶体管12b、第三晶体管14a、第四晶体管22a、第五晶体管22b和第六晶体管24a均可以为金属-氧化物半导体场效应晶体管(Metal-Oxide-Semiconductor Field-Effect Transistor，MOSFET)，简称MOS管，或者金氧半场效晶体管。具体而言，所述第一晶体管12a、第二晶体管12b、第三晶体管14a、第四晶体管22a、第五晶体管22b和第六晶体管24a可以为N型MOS管，也可以为P型晶体管，本申请对此不做具体限制。
在本申请实施例中，所述第一端可以为各个晶体管的漏极(D)，所述第二端可以为各个晶体管的源极(S)，所述控制端可以为各个晶体管的栅极(G)，本申请对此不做具体限制。
在本申请实施例中，所述第一电位可以为高电位，第二电位可以为低电位，本申请对此不做具体限制。
在本申请实施例中，通过设置第一驱动模块10和第二驱动模块20，并在所述第一驱动模块10中设置第一发光驱动电路12和第二发光驱动电路14分别为所述发光元件31的第一端和第二端施加第一电压和第二电压。在第二驱动模块20中设置第三发光驱动电路22和第四发光驱动电路24分别为所述发光元件31的第一端和第二端施加第一电压和第二电压。通过控制传输至所述第一驱动模块10的第一扫描信号Scan1和传输至所述第二驱动模块20的第二扫描信号Scan2的电位情况，使得所述第一驱动模块10和所述第二驱动模块20轮流为所述发光元件31施加第一电压和第二电压，以驱动得所述发光单元30发光。使得第一驱动模块10和所述第二驱动模块20的各个晶体管可以间歇传输电压，利用间歇时间释放传输电压产生的热量，进而降低各个晶体管的工作温度。进一步地，有利于提升各个晶体管的使用寿命。
在本申请实施例中，当所述第一晶体管12a的控制端接收到所述数据信号Data，且所述第一扫描信号Scan1处于所述第一电位时，所述第一电源端Vodd用于传输所述第一电压，所述第二电源端Veven用于传输所述第二电压。当所述第四晶体管22a的控制端接收到所述数据信号Data，且所述第二扫描信号Scan2处于所述第二电位时，所述第一电源端Vodd用于传输所述第二电压，所 述第二电源端Veven用于传输所述第一电压。
请一并参阅图1和图2，接下来，对所述像素驱动电路100的工作过程做总体阐述。
当所述第一晶体管12a的控制端接收到所述数据信号Data，且所述第一扫描信号Scan1处于第一电位时，所述第一晶体管12a、所述第二晶体管12b和所述第三晶体管14a均处于导通状态，所述第一电压经所述第一晶体管12a和所述第二晶体管12b传输至所述发光元件31的第一端，所述第二电压经所述第三晶体管14a传输至所述发光元件31的第二端。此时，所述发光元件31在所述第一驱动模块10的驱动下发光。
当第四晶体管22a的控制端接收到所述数据信号Data，且所述第二扫描信号Scan2处于第一电位时，所述第四晶体管22a、所述第五晶体管22b和所述第六晶体管24a均处于导通状态，所述第一电压经所述第四晶体管22a和所述第五晶体管22b传输至所述发光元件31的第一端，所述第二电压经所述第六晶体管24a传输至所述发光元件31的第二端。此时，所述发光元件31在所述第二驱动模块20的驱动下发光。
随着第一扫描信号Scan1和所述第二扫描信号Scan2的电位切换，所述第一驱动模块10和所述第二驱动模块20轮流驱动所述发光单元30发光。
如图2所示，在本申请一实施例中，所述像素驱动电路100还可以包括信号短接电路50，所述信号短接电路50与所述第一驱动模块10和第二驱动模块20均电性连接。在切换第一驱动模块10或第二驱动模块20驱动所述发光单元30发光的间隙，所述信号短接电路50将所述第一扫描信号Scan1和所述第二扫描信号Scan2短接，以实现所述第一扫描信号Scan1和所述第二扫描信号Scan2之间的电荷分享。这样可以进一步地减少第一扫描信号Scan1和所述第二扫描信号Scan2的电位切换所需的功耗，进而降低所述像素驱动电路100的功耗。
可以理解的是，所谓电荷分享，就是在扫描信号高低电平切换期间，也即所述第一电位切换为所述第二电位的期间，将所述第一电位和所述第二电位短接在一起，那么所述第一电位变为第二电位的速度加快，同时所述第二电位变为第一电位的速度也加快，当此频率达到预设频率值的时候，则可以有效节省发光单元的功耗。
需要说明的是，图2中仅示意性表示电路之间的电连接关系，不具有限制 各元器件数量和物理位置的作用。具体而言，传输至所述第二晶体管12b和传输至所述第三晶体管14a的所述第一扫描信号Scan1，可以由一个信号控制器提供，也可以分别由两个信号控制器提供，本申请对此不做具体限制。
传输至所述第五晶体管22b和传输至所述第六晶体管24a的所述第二扫描信号Scan2，可以由一个信号控制器提供，也可以分别由两个信号控制器提供，本申请对此不做具体限制。
在本申请具体实施例中，所述信号短接电路50可以包括若干开关子电路。当传输至所述第二晶体管12b和传输至所述第三晶体管14a的所述第一扫描信号Scan1由一个信号控制器提供，传输至所述第五晶体管22b和传输至所述第六晶体管24a的所述第二扫描信号Scan2由另一个信号控制器提供时，所述信号短接电路50包括一个开关子电路，所述开关子电路包括控制端、第一端和第二端。所述开关子电路的控制端用于接收第三扫描信号Scan3，所述开关子电路的第一端电性连接至所述第二晶体管12b的控制端和所述第三晶体管14a的控制端，所述开关子电路的第二端电性连接至所述第五晶体管22b的控制端和所述第六晶体管24a的控制端，以将所述第一扫描信号Scan1和所述第二扫描信号Scan2短接。由于所述第一驱动模块10和所述第二驱动模块20轮流为所述发光单元30提供第一电压和第二电压，故在所述第一扫描信号Scan1和所述第二扫描信号Scan2的控制下，轮流切换所述第一驱动模块10和所述第二驱动模块20为所述发光单元30提供电压时的电位相反，故，当所述第一扫描信号Scan1和所述第二扫描信号Scan2短接时，可以有效降低所述第一扫描信号Scan1和所述第二扫描信号Scan2电位切换的功耗。
例如，当由所述第一驱动模块10准备切换至所述第二驱动模块20为所述发光单元30提供第一电压和第二电压时，所述第一扫描信号Scan1处于第一电位，所述第二扫描信号Scan2处于第二电位。此时，将所述第一扫描信号Scan1和所述第二扫描信号Scan2短接，所述第一扫描信号Scan1将处于第一电位的电荷传输至所述第二扫描信号Scan2，以使所述第一扫描信号Scan1电位降低，所述第二扫描信号Scan2电位升高，进而有效降低电位转换的功耗。
如图2所示，在本申请具体实施例中，当传输至所述第二晶体管12b的所述第一扫描信号Scan1和传输至所述第三晶体管14a的所述第一扫描信号Scan1分别由两个信号控制器提供，传输至所述第五晶体管22b的所述第二扫描信号 Scan2和传输至所述第六晶体管24a的所述第二扫描信号Scan2分别由另外两个信号控制器提供时，所述信号短接电路50包括两个开关子电路，可分别定义为第一开关子电路52和第二开关子电路54，所述第一开关子电路52和所述第二开关子电路54均包括控制端、第一端和第二端。
具体为，所述第一开关子电路52的控制端用于接收所述第三扫描信号Scan3，所述第一开关子电路52的第一端电性连接至所述第三晶体管14a的控制端，所述第一开关子电路52的第二端电性连接至所述第六晶体管24a的控制端。所述第二开关子电路54的控制端用于接收所述第三扫描信号Scan3，所述第二开关子电路54的第一端电性连接至所述第五晶体管22b的控制端，所述第二开关子电路54的第二端电性连接至所述第二晶体管12b的控制端。
由于所述第一驱动模块10和第二驱动模块20轮流为所述发光单元30提供第一电压和第二电压，在所述第一扫描信号Scan1和所述第二扫描信号Scan2的控制下，轮流切换所述第一驱动模块10和所述第二驱动模块20为所述发光单元30提供电压时的电位相反，故，当所述第一扫描信号Scan1和所述第二扫描信号Scan2短接时，可以有效降低所述第一扫描信号Scan1和所述第二扫描信号Scan2电位切换的功耗。
在本申请具体实施例中，所述第一开关子电路52可以包括第一分享晶体管52a，所述第二开关子电路54可以包括第二分享晶体管54a。所述第一分享晶体管52a的控制端用于接收所述第三扫描信号Scan3。所述第一分享晶体管52a的第一端电性连接至所述第三晶体管14a的控制端，所述第一分享晶体管52a的第二端电性连接至所述第六晶体管24a的控制端。
所述第二分享晶体管54a的控制端用于接收所述第三扫描信号Scan3，所述第二分享晶体管54a的第一端电性连接至所述第五晶体管22b的控制端，第二分享晶体管54a的第二端电性连接至所述第二晶体管12b的控制端。
请一并参阅图3，图3为图2所示的像素驱动电路100的驱动时序图。如图3所示，在本申请实施例中，数据信号Data对应的曲线为数据信号Data的时序，第一扫描信号Scan1对应的曲线为第一扫描信号Scan1的时序，第二扫描信号Scan2对应的曲线为第二扫描信号Scan2的时序。
图中可见，第一扫描信号Scan1对应两条曲线，即表示该像素驱动电路100中，传输至所述第二晶体管12b和传输至所述第三晶体管14a的所述第一扫描 信号Scan1分别由两个信号控制器提供，故有两条曲线，但由于功能相同，故两条曲线的时序相同。第二扫描信号Scan2对应两条曲线，即表示该像素驱动电路100中，传输至所述第五晶体管22b和传输至所述第六晶体管24a的所述第二扫描信号Scan2分别由两个信号控制器提供，故有两条曲线，但由于功能相同，故两条曲线的时序相同。
在本申请实施例中，所述数据信号Data的大小对应调节所述发光元件31中流过的电流大小，即调节所述发光元件31的发光亮度。其电位的高低对应发光元件31不同的发光亮度。
如图3所示，所述第一扫描信号Scan1和所述第二扫描信号Scan2处于第一电位和第二电位的情况相反，即反映出所述第一驱动模块10和所述第二驱动模块20交替驱动所述发光单元30发光。
如图3所示，时序开始，由所述第一驱动模块10驱动所述发光单元30发光。
t1时段部分，t1时段左端点时刻即表示所述像素驱动电路100准备由所述第一驱动模块10切换至所述第二驱动模块20驱动所述发光单元30发光。
t1时段内，所述信号短接电路50将所述第一扫描信号Scan1和所述第二扫描信号Scan2短接，以实现所述第一扫描信号Scan1和所述第二扫描信号Scan2之间的电荷分享。图中可见，t1时段的右端点时刻第一扫描信号Scan1和所述第二扫描信号Scan2完成电荷分享，二者的电位趋于第一电位和第二电位的中间位置。
整个t2时段，所述第一扫描信号Scan1和所述第二扫描信号Scan2均处于趋于第一电位和第二电位的中间位置不变。
t3时段，信号控制器输出第二扫描信号Scan2以使所述第二扫描信号Scan2持续升高至第一电位。
t4时段，当所述第二扫描信号Scan2处于第一电位时，所述第二驱动模块20驱动所述发光单元30发光。此时，所述第一扫描信号Scan1处于第二电位。
因此，通过控制传输至所述第一驱动模块10的第一扫描信号Scan1和传输至所述第二驱动模块20的第二扫描信号Scan2的电位情况，使得所述第一驱动模块10和所述第二驱动模块20交替驱动所述发光单元30发光。
基于同一构思，本申请实施例还公开了一种显示面板，所述显示面板包括 若干上述的像素驱动电路100以及信号控制器。信号控制器用于为所述像素驱动电路100提供第一扫描信号Scan1和第二扫描信号Scan2。
基于同一构思，本申请实施例还公开了一种显示装置，所述显示装置包括上述的显示面板以及电源模组，所述电源模组用于为所述显示面板显示画面供电。
综上所述，在本申请的像素驱动电路100、显示面板和显示装置中，像素驱动电路100设置第一驱动模块10和第二驱动模块20，第一驱动模块10中设置第一发光驱动电路12和第二发光驱动电路14分别为所述发光元件31的第一端和第二端施加第一电压和第二电压。在第二驱动模块20中设置第三发光驱动电路22和第四发光驱动电路24分别为所述发光元件31的第一端和第二端施加第一电压和第二电压。通过控制传输至所述第一驱动模块10的第一扫描信号Scan1和传输至所述第二驱动模块20的第二扫描信号Scan2的电位情况，使得所述第一驱动模块10和所述第二驱动模块20交替驱动所述发光单元30发光。因此，可以实现第一驱动模块10和所述第二驱动模块20的各个晶体管可以间歇传输电压，利用间歇时间释放传输电压产生的热量，进而降低各个晶体管的工作温度，有利于提升各个晶体管的使用寿命，进而提高显示面板和显示装置的使用寿命。
此外，在所述像素驱动电路100中设置信号短接电路50，在切换第一驱动模块10或第二驱动模块20驱动所述发光单元30发光的间隙，所述信号短接电路50将所述第一扫描信号Scan1和所述第二扫描信号Scan2短接，以实现所述第一扫描信号Scan1和所述第二扫描信号Scan2之间的电荷分享。因此，可以减少第一扫描信号Scan1和所述第二扫描信号Scan2的电位切换所需的功耗，降低所述像素驱动电路100的功耗，进而有效降低显示面板和显示装置的功耗。
对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
在本说明书的描述中，参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的 一个或多个实施方式或示例中以合适的方式结合。
应当理解的是，以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种像素驱动电路，其包括第一驱动模块和发光单元，其中，所述像素驱动电路还包括第二驱动模块，所述第一驱动模块和所述第二驱动模块分别电性连接至所述发光单元、第一电源端和第二电源端；
    所述第一驱动模块接收第一扫描信号和数据信号，并根据所述第一扫描信号和所述数据信号选择性自所述第一电源端接收第一电压以及自所述第二电源端接收第二电压；或者，
    所述第二驱动模块接收第二扫描信号和所述数据信号，并根据所述第二扫描信号和所述数据信号选择性自所述第一电源端接收所述第二电压以及自所述第二电源端接收所述第一电压；
    所述第一驱动模块或所述第二驱动模块接收的所述第一电压和所述第二电压用于交替施加于所述发光单元的两端，以驱动所述发光单元发光。
  2. 如权利要求1所述的像素驱动电路，其中，所述第一驱动模块包括第一发光驱动电路和第二发光驱动电路，所述第一发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一发光驱动电路的第二端电性连接至所述发光单元；
    所述第二发光驱动电路的第一端电性连接至所述发光单元，所述第二发光驱动电路的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
  3. 如权利要求2所述的像素驱动电路，其中，所述第二驱动模块包括第三发光驱动电路和第四发光驱动电路，所述第三发光驱动电路的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第三发光驱动电路的第二端电性连接至所述发光单元；
    所述第四发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压，所述第四发光驱动电路的第二端电性连接至所述发光单元。
  4. 如权利要求3所述的像素驱动电路，其中，所述发光单元包括发光元件，所述发光元件包括第一端和第二端，所述发光元件的第一端和第二端分别电性连接至所述第一驱动模块和所述第二驱动模块。
  5. 如权利要求4所述的像素驱动电路，其中，所述第一发光驱动电路包括第一晶体管和第二晶体管，所述第二发光驱动电路包括第三晶体管，所述第一 晶体管的控制端用于接收所述数据信号，所述第一晶体管的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一晶体管的第二端电性连接至所述第二晶体管的第一端，所述第二晶体管的控制端用于接收所述第一扫描信号，所述第二晶体管的第二端电性连接至所述发光元件的第一端；
    所述第三晶体管的控制端用于接收所述第一扫描信号，所述第三晶体管的第一端电性连接至所述发光元件的第二端，所述第三晶体管的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
  6. 如权利要求5所述的像素驱动电路，其中，所述第三发光驱动电路包括第四晶体管和第五晶体管，所述第四发光驱动电路包括第六晶体管，所述第四晶体管的控制端用于接收所述数据信号，所述第四晶体管的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第四晶体管的第二端电性连接至所述第五晶体管的第一端，所述第五晶体管的控制端用于接收所述第二扫描信号，所述第五晶体管的第二端电性连接至所述发光元件的第一端；
    所述第六晶体管的控制端用于接收所述第二扫描信号，所述第六晶体管的第一端电性连接至所述发光元件的第二端，所述第六晶体管的第二端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压。
  7. 如权利要求6所述的像素驱动电路，其中，当所述第一晶体管的控制端接收到所述数据信号且所述第一扫描信号处于第一电位时，所述第一晶体管、所述第二晶体管和所述第三晶体管均处于导通状态，所述第一电压经所述第一晶体管和所述第二晶体管传输至所述发光元件的第一端，所述第二电压经所述第三晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光；
    当第四晶体管的控制端接收到所述数据信号且所述第二扫描信号处于第一电位时，所述第四晶体管、所述第五晶体管和所述第六晶体管均处于导通状态，所述第一电压经所述第四晶体管和所述第五晶体管传输至所述发光元件的第一端，所述第二电压经所述第六晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光。
  8. 如权利要求1所述的像素驱动电路，其中，所述像素驱动电路还包括信号短接电路，所述信号短接电路包括若干开关子电路，所述开关子电路与所述 第一驱动模块和所述第二驱动模块均电性连接，在所述第一驱动模块和所述第二驱动模块切换驱动所述发光单元发光时，所述开关子电路将所述第一扫描信号和所述第二扫描信号短接。
  9. 一种显示面板，其包括信号控制器以及若干像素驱动电路，所述信号控制器用于为所述像素驱动电路提供第一扫描信号和第二扫描信号，所述像素驱动电路包括第一驱动模块和发光单元，其中，所述像素驱动电路还包括第二驱动模块，所述第一驱动模块和所述第二驱动模块分别电性连接至所述发光单元、第一电源端和第二电源端；
    所述第一驱动模块接收第一扫描信号和数据信号，并根据所述第一扫描信号和所述数据信号选择性自所述第一电源端接收第一电压以及自所述第二电源端接收第二电压；或者，
    所述第二驱动模块接收第二扫描信号和所述数据信号，并根据所述第二扫描信号和所述数据信号选择性自所述第一电源端接收所述第二电压以及自所述第二电源端接收所述第一电压；
    所述第一驱动模块或所述第二驱动模块接收的所述第一电压和所述第二电压用于交替施加于所述发光单元的两端，以驱动所述发光单元发光。
  10. 如权利要求9所述的显示面板，其中，所述第一驱动模块包括第一发光驱动电路和第二发光驱动电路，所述第一发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一发光驱动电路的第二端电性连接至所述发光单元；所述第二发光驱动电路的第一端电性连接至所述发光单元，所述第二发光驱动电路的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压；
    所述第二驱动模块包括第三发光驱动电路和第四发光驱动电路，所述第三发光驱动电路的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第三发光驱动电路的第二端电性连接至所述发光单元；所述第四发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压，所述第四发光驱动电路的第二端电性连接至所述发光单元；
    所述发光单元包括发光元件，所述发光元件包括第一端和第二端，所述发光元件的第一端和第二端分别电性连接至所述第一驱动模块和所述第二驱动模块。
  11. 如权利要求10所述的显示面板，其中，所述第一发光驱动电路包括第一晶体管和第二晶体管，所述第二发光驱动电路包括第三晶体管，所述第一晶体管的控制端用于接收所述数据信号，所述第一晶体管的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一晶体管的第二端电性连接至所述第二晶体管的第一端，所述第二晶体管的控制端用于接收所述第一扫描信号，所述第二晶体管的第二端电性连接至所述发光元件的第一端；
    所述第三晶体管的控制端用于接收所述第一扫描信号，所述第三晶体管的第一端电性连接至所述发光元件的第二端，所述第三晶体管的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
  12. 如权利要求11所述的显示面板，其中，所述第三发光驱动电路包括第四晶体管和第五晶体管，所述第四发光驱动电路包括第六晶体管，所述第四晶体管的控制端用于接收所述数据信号，所述第四晶体管的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第四晶体管的第二端电性连接至所述第五晶体管的第一端，所述第五晶体管的控制端用于接收所述第二扫描信号，所述第五晶体管的第二端电性连接至所述发光元件的第一端；
    所述第六晶体管的控制端用于接收所述第二扫描信号，所述第六晶体管的第一端电性连接至所述发光元件的第二端，所述第六晶体管的第二端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压。
  13. 如权利要求12所述的显示面板，其中，当所述第一晶体管的控制端接收到所述数据信号且所述第一扫描信号处于第一电位时，所述第一晶体管、所述第二晶体管和所述第三晶体管均处于导通状态，所述第一电压经所述第一晶体管和所述第二晶体管传输至所述发光元件的第一端，所述第二电压经所述第三晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光；
    当第四晶体管的控制端接收到所述数据信号且所述第二扫描信号处于第一电位时，所述第四晶体管、所述第五晶体管和所述第六晶体管均处于导通状态，所述第一电压经所述第四晶体管和所述第五晶体管传输至所述发光元件的第一端，所述第二电压经所述第六晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光。
  14. 如权利要求9所述的显示面板，其中，所述像素驱动电路还包括信号短接电路，所述信号短接电路包括若干开关子电路，所述开关子电路与所述第一驱动模块和所述第二驱动模块均电性连接，在所述第一驱动模块和所述第二驱动模块切换驱动所述发光单元发光时，所述开关子电路将所述第一扫描信号和所述第二扫描信号短接。
  15. 一种显示装置，其包括电源模组以及显示面板，所述电源模组用于为所述显示面板供电，所述显示面板包括信号控制器以及若干像素驱动电路，所述信号控制器用于为所述像素驱动电路提供第一扫描信号和第二扫描信号，所述像素驱动电路包括第一驱动模块和发光单元，其中，所述像素驱动电路还包括第二驱动模块，所述第一驱动模块和所述第二驱动模块分别电性连接至所述发光单元、第一电源端和第二电源端；
    所述第一驱动模块接收第一扫描信号和数据信号，并根据所述第一扫描信号和所述数据信号选择性自所述第一电源端接收第一电压以及自所述第二电源端接收第二电压；或者，
    所述第二驱动模块接收第二扫描信号和所述数据信号，并根据所述第二扫描信号和所述数据信号选择性自所述第一电源端接收所述第二电压以及自所述第二电源端接收所述第一电压；
    所述第一驱动模块或所述第二驱动模块接收的所述第一电压和所述第二电压用于交替施加于所述发光单元的两端，以驱动所述发光单元发光。
  16. 如权利要求15所述的显示装置，其中，所述第一驱动模块包括第一发光驱动电路和第二发光驱动电路，所述第一发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一发光驱动电路的第二端电性连接至所述发光单元；所述第二发光驱动电路的第一端电性连接至所述发光单元，所述第二发光驱动电路的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压；
    所述第二驱动模块包括第三发光驱动电路和第四发光驱动电路，所述第三发光驱动电路的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第三发光驱动电路的第二端电性连接至所述发光单元；所述第四发光驱动电路的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压，所述第四发光驱动电路的第二端电性连接至所述发光单元；
    所述发光单元包括发光元件，所述发光元件包括第一端和第二端，所述发光元件的第一端和第二端分别电性连接至所述第一驱动模块和所述第二驱动模块。
  17. 如权利要求16所述的显示装置，其中，所述第一发光驱动电路包括第一晶体管和第二晶体管，所述第二发光驱动电路包括第三晶体管，所述第一晶体管的控制端用于接收所述数据信号，所述第一晶体管的第一端电性连接至所述第一电源端，用于自所述第一电源端接收所述第一电压，所述第一晶体管的第二端电性连接至所述第二晶体管的第一端，所述第二晶体管的控制端用于接收所述第一扫描信号，所述第二晶体管的第二端电性连接至所述发光元件的第一端；
    所述第三晶体管的控制端用于接收所述第一扫描信号，所述第三晶体管的第一端电性连接至所述发光元件的第二端，所述第三晶体管的第二端电性连接至所述第二电源端，用于自所述第二电源端接收所述第二电压。
  18. 如权利要求17所述的显示装置，其中，所述第三发光驱动电路包括第四晶体管和第五晶体管，所述第四发光驱动电路包括第六晶体管，所述第四晶体管的控制端用于接收所述数据信号，所述第四晶体管的第一端电性连接至所述第二电源端，用于自所述第二电源端接收所述第一电压，所述第四晶体管的第二端电性连接至所述第五晶体管的第一端，所述第五晶体管的控制端用于接收所述第二扫描信号，所述第五晶体管的第二端电性连接至所述发光元件的第一端；
    所述第六晶体管的控制端用于接收所述第二扫描信号，所述第六晶体管的第一端电性连接至所述发光元件的第二端，所述第六晶体管的第二端电性连接至所述第一电源端，用于自所述第一电源端接收所述第二电压。
  19. 如权利要求18所述的显示装置，其中，当所述第一晶体管的控制端接收到所述数据信号且所述第一扫描信号处于第一电位时，所述第一晶体管、所述第二晶体管和所述第三晶体管均处于导通状态，所述第一电压经所述第一晶体管和所述第二晶体管传输至所述发光元件的第一端，所述第二电压经所述第三晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光；
    当第四晶体管的控制端接收到所述数据信号且所述第二扫描信号处于第一电位时，所述第四晶体管、所述第五晶体管和所述第六晶体管均处于导通状态， 所述第一电压经所述第四晶体管和所述第五晶体管传输至所述发光元件的第一端，所述第二电压经所述第六晶体管传输至所述发光元件的第二端，所述发光元件在所述第一电压和所述第二电压的驱动下发光。
  20. 如权利要求15所述的显示装置，其中，所述像素驱动电路还包括信号短接电路，所述信号短接电路包括若干开关子电路，所述开关子电路与所述第一驱动模块和所述第二驱动模块均电性连接，在所述第一驱动模块和所述第二驱动模块切换驱动所述发光单元发光时，所述开关子电路将所述第一扫描信号和所述第二扫描信号短接。
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