WO2021134853A1 - 像素电路及其显示面板、显示装置 - Google Patents

像素电路及其显示面板、显示装置 Download PDF

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Publication number
WO2021134853A1
WO2021134853A1 PCT/CN2020/073427 CN2020073427W WO2021134853A1 WO 2021134853 A1 WO2021134853 A1 WO 2021134853A1 CN 2020073427 W CN2020073427 W CN 2020073427W WO 2021134853 A1 WO2021134853 A1 WO 2021134853A1
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WIPO (PCT)
Prior art keywords
pixel
sub
unit
light
emitting unit
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Application number
PCT/CN2020/073427
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English (en)
French (fr)
Inventor
赵隋鑫
Original Assignee
深圳市华星光电半导体显示技术有限公司
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Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US16/644,475 priority Critical patent/US20210407406A1/en
Publication of WO2021134853A1 publication Critical patent/WO2021134853A1/zh

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Classifications

    • 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]
    • G09G3/3266—Details of drivers for scan 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
    • 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]
    • G09G3/3275—Details of drivers for 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
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • 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
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0278—Details of driving circuits arranged to drive both scan and 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
    • G09G2320/02—Improving the quality of display appearance
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • 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
    • G09G2330/10—Dealing with defective pixels

Definitions

  • This application relates to the field of display technology, and more specifically, to a pixel circuit, a display panel, and a display device.
  • the inventor found that there are at least the following problems in the traditional technology: during the production process of the traditional OLED panel, there are certain abnormalities of bright spots and dark spots in the panel, and the display effect is poor, and the abnormal bright spots are repaired. It takes a long time.
  • an embodiment of the present invention provides a pixel circuit, including:
  • a light-emitting unit includes at least one sub-pixel light-emitting unit
  • a pixel drive unit includes at least one sub-pixel drive unit
  • a fuse unit which is connected between the sub-pixel driving unit and the anode of the sub-pixel light-emitting unit;
  • the fusing unit is disconnected.
  • an embodiment of the present invention also provides a display panel including a pixel circuit; the pixel circuit includes:
  • a light-emitting unit includes at least one sub-pixel light-emitting unit
  • a pixel drive unit includes at least one sub-pixel drive unit
  • a fuse unit which is connected between the sub-pixel driving unit and the anode of the sub-pixel light-emitting unit;
  • the fusing unit is disconnected.
  • an embodiment of the present invention also provides a display device including a display panel; the display panel includes a pixel circuit; and the pixel circuit includes:
  • a light-emitting unit includes at least one sub-pixel light-emitting unit
  • a pixel drive unit includes at least one sub-pixel drive unit
  • a fuse unit which is connected between the sub-pixel driving unit and the anode of the sub-pixel light-emitting unit;
  • the fusing unit is disconnected.
  • the light-emitting unit includes at least one sub-pixel light-emitting unit;
  • the pixel drive unit includes at least one sub-pixel drive unit;
  • the fuse unit is connected between the sub-pixel drive unit and the anode of the sub-pixel light-emitting unit; Furthermore, when the current output by the sub-pixel driving unit is greater than the fusing current threshold, the fusing unit is disconnected, so that the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit are disconnected, and the effect of abnormal bright spots is eliminated.
  • a fuse unit that can be fused under high current is provided at the connection between the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, and then when the sub-pixel light-emitting unit has a bright spot abnormality, that is, the output current of the sub-pixel light-emitting unit is greater than
  • the fusing unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot, improves the display effect, and improves the panel production efficiency.
  • FIG. 1 is a schematic diagram of a first structure of a pixel circuit in an embodiment
  • FIG. 2 is a schematic diagram of a second structure of a pixel circuit in an embodiment
  • FIG. 3 is a schematic diagram of a third structure of a pixel circuit in an embodiment
  • FIG. 4 is a schematic diagram of a fourth structure of a pixel circuit in an embodiment
  • FIG. 5 is a schematic diagram of a fifth structure of a pixel circuit in an embodiment.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meanings of the above terms in this application can be understood under specific circumstances.
  • FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5 Please refer to FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5.
  • the pixel circuit, the display panel, and the display device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
  • a pixel circuit including:
  • the light-emitting unit 110 includes at least one sub-pixel light-emitting unit 112;
  • a pixel driving unit 120 includes at least one sub-pixel driving unit 122;
  • the fuse unit 130 is connected between the sub-pixel driving unit 122 and the anode of the sub-pixel light-emitting unit 112;
  • the fusing unit 130 when the current output by the sub-pixel driving unit 122 is greater than the fusing current threshold, the fusing unit 130 is turned off.
  • the light-emitting unit 110 refers to a device or unit module capable of generating a light source.
  • the light-emitting unit 110 may include at least one sub-pixel light-emitting unit 112, wherein the position of each sub-pixel light-emitting unit 112 included in the light-emitting unit 110 can be arranged and determined according to actual requirements.
  • the sub-pixel light-emitting unit 112 refers to a light-emitting device or unit module corresponding to a single sub-pixel.
  • the sub-pixel light-emitting unit 112 may be a light-emitting unit corresponding to any one of the RGB pixels.
  • the pixel driving unit 120 can be used to drive the light-emitting unit to light up.
  • the pixel driving unit 120 may output a current driving signal, and transmit the output current driving signal to the light-emitting unit 110, and then the light-emitting unit 110 lights up according to the current driving signal.
  • the pixel driving unit 120 may include at least one sub-pixel driving unit 122, wherein the position of each sub-pixel driving unit 122 included in the pixel driving unit 120 can be arranged and determined according to actual requirements.
  • the number of sub-pixel driving units 122 included in the pixel driving unit 120 is equal to the number of sub-pixel light-emitting units 112 included in the light-emitting unit 110, and the pixel driving unit 120 includes each sub-pixel driving unit 122 and the light-emitting unit 110 includes The sub-pixel light-emitting units 112 are connected in a one-to-one correspondence.
  • the fusing unit 130 refers to a device with high current fusing characteristics. According to the high-current fusing characteristics of the fuse unit 130, when the current input to the fuse unit 130 exceeds the fuse current threshold, the fuse is automatically generated. Since the fuse unit 130 is connected between the sub-pixel driving unit 122 and the anode of the sub-pixel light-emitting unit 112, when the current output by the sub-pixel driving unit 122 is greater than the fuse current threshold, the fuse unit 130 is automatically disconnected, so that the sub-pixel driving unit The connection path between 122 and the anode of the sub-pixel light-emitting unit 112 is disconnected to prevent the influence of abnormal bright spots.
  • the light-emitting unit 110 includes at least one sub-pixel light-emitting unit 112; the pixel driving unit 120 includes at least one sub-pixel driving unit 122; the fuse unit 130 is connected between the sub-pixel driving unit 122 and the anode of the sub-pixel light-emitting unit 112 Further, when the current output by the sub-pixel driving unit 122 is greater than the fusing current threshold, the fusing unit 130 is disconnected, so that the anode of the sub-pixel light-emitting unit 112 and the sub-pixel driving unit 122 are disconnected, eliminating the effect of abnormal bright spots.
  • a fuse unit that can be fused under high current is provided at the connection between the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, so that when a bright spot abnormality occurs in the sub-pixel light-emitting unit, That is, when the output current of the sub-pixel light-emitting unit is greater than the fuse current threshold, the fuse unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot, improves the display effect, and improves the panel production efficiency.
  • a pixel circuit in one embodiment, as shown in FIG. 2, a pixel circuit is provided, the pixel circuit includes a light-emitting unit 210, the light-emitting unit 210 includes at least one sub-pixel light-emitting unit 212; a pixel driving unit 220, the pixel driving unit 220 includes at least A sub-pixel driving unit 222; a fuse unit 230, which is connected between the sub-pixel driving unit 222 and the anode of the sub-pixel light-emitting unit 212; when the current output by the sub-pixel driving unit 222 is greater than the fuse current threshold, the fuse unit 230 disconnect.
  • the sub-pixel driving unit 222 includes a driving thin film transistor 224; the drain of the driving thin film transistor 224 is connected to the anode of the sub-pixel light-emitting unit 212 through a fuse unit.
  • the driving thin film transistor 224 refers to a thin film transistor (TFT) for driving the light-emitting unit of the sub-pixel to light up.
  • TFT thin film transistor
  • the driving thin film transistor 224 can increase the power source connected to the source.
  • the voltage signal is converted into a current signal, and then the drain of the thin film transistor 224 is driven to transmit the output current signal to the anode of the sub-pixel light-emitting unit 212 through the fuse unit 230, so that the sub-pixel light-emitting unit 212 is lighted up.
  • the fusing unit 230 When the current value of the current signal is greater than the fusing current threshold of the fusing unit, the fusing unit 230 is automatically disconnected, so that the connection path between the driving thin film transistor 224 and the sub-pixel light-emitting unit 212 is disconnected, thereby avoiding abnormal bright spots and achieving elimination
  • the impact of abnormal bright spots greatly shortens the repair time of abnormal bright spots, improves the display effect, and improves the panel production efficiency.
  • the sub-pixel driving unit 222 further includes a switch driving thin film transistor 226; the drain of the switch thin film transistor 226 is connected to the gate of the driving thin film transistor 224, and the source is used to access data. Signal, the gate is used to access the scan signal.
  • the switch driving thin film transistor 226 refers to a thin film transistor (TFT) used to control the on and off of the driving thin film transistor.
  • TFT thin film transistor
  • the drain of the switching thin film transistor 226 is connected to the gate of the driving thin film transistor 224, the source is used to connect the data signal, the gate is used to connect the scan signal, and then the gate of the switching thin film transistor 226 is connected to the high
  • the switching thin film transistor 226 is turned on, and the data signal can be connected to the source of the switching thin film transistor 226 and transmitted to the gate of the driving thin film transistor 224, so that the gate of the driving thin film transistor 224 is turned on.
  • the driving thin film transistor 224 can convert the high voltage signal of the power source connected to the source into a current signal, and then the drain of the driving thin film transistor 224 transmits the output current signal through the fuse unit 230 To the anode of the sub-pixel light-emitting unit 212, the sub-pixel light-emitting unit 212 is lighted up.
  • the fusing unit 230 When the current value of the current signal is greater than the fusing current threshold of the fusing unit, the fusing unit 230 is automatically disconnected, so that the connection path between the driving thin film transistor 224 and the sub-pixel light-emitting unit 212 is disconnected, thereby avoiding abnormal bright spots and achieving elimination
  • the impact of abnormal bright spots greatly shortens the repair time of abnormal bright spots, improves the display effect, and improves the panel production efficiency.
  • the scan signal may be transmitted to the gate of the switching thin film transistor through the scan line
  • the data signal may be transmitted to the source of the switching thin film transistor through the data line.
  • the sub-pixel driving unit is a 2TIC driving unit or a 3T1C driving unit.
  • the 2TIC driving unit refers to a sub-pixel driving unit that includes 2 TFTs (thin film transistors) and 1 capacitor.
  • the 3TIC drive unit refers to a sub-pixel drive unit that contains 3 TFTs (thin film transistors) and 1 capacitor.
  • a pixel circuit in one embodiment, as shown in FIG. 3, a pixel circuit is provided, the pixel circuit includes a light-emitting unit 310, the light-emitting unit 310 includes at least one sub-pixel light-emitting unit 312; a pixel driving unit 320, the pixel driving unit 320 includes at least A sub-pixel driving unit 322; a fuse unit, which is connected between the sub-pixel driving unit 322 and the anode of the sub-pixel light-emitting unit 312; when the current output by the sub-pixel driving unit 322 is greater than the fuse current threshold, the fuse unit is disconnected.
  • the fuse unit is a high-conductivity metal piece 330.
  • the high-conductivity metal piece 330 refers to a metal piece with high-current and easy-to-fuse characteristics.
  • the high-conductivity metal piece 330 can automatically fuse when the current input to the high-conductivity metal piece 330 exceeds the fusing current threshold according to the high-current fusing characteristics.
  • the high-conductivity metal member 330 is connected between the anode of the sub-pixel driving unit 322 and the sub-pixel light-emitting unit 312, and then when the current output by the sub-pixel driving unit 322 is greater than the fuse current threshold, the high-conductivity metal member 330 is automatically cut off Open, so that the connection path between the sub-pixel driving unit 322 and the anode of the sub-pixel light-emitting unit 312 is disconnected, preventing abnormal bright spots and eliminating the influence of abnormal bright spots.
  • a high-conductivity metal piece that can be fused under high current is provided at the connection between the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, so that bright spot abnormality occurs in the sub-pixel light-emitting unit.
  • the fusing unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot.
  • the high-conductivity metal Due to the large current in the bright spot in the panel, the high-conductivity metal The components are automatically fused to disconnect the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, eliminating the effect of bright spots, realizing self-repairing of pixel bright spots, improving display effects and improving panel production efficiency.
  • a pixel circuit in one embodiment, as shown in FIG. 4, a pixel circuit is provided, the pixel circuit includes a light-emitting unit 410, the light-emitting unit 410 includes at least one sub-pixel light-emitting unit 412; a pixel driving unit 420, the pixel driving unit 420 includes at least A sub-pixel driving unit 422; a fuse unit 430, which is connected between the sub-pixel driving unit 422 and the anode of the sub-pixel light-emitting unit 412; when the current output by the sub-pixel driving unit 422 is greater than the fuse current threshold, the fuse unit 430 disconnect.
  • the light-emitting unit 410 includes three sub-pixel light-emitting units 412; the pixel drive unit 420 includes three sub-pixel drive units 422; each sub-pixel drive unit 422 is connected to the anode of each sub-pixel light-emitting unit 412 in a one-to-one correspondence; each sub-pixel drive unit A fuse unit 430 is connected between the 422 and the anode of each sub-pixel light-emitting unit 412.
  • each sub-pixel driving unit 422 and the sub-pixel light-emitting unit are connected in a one-to-one correspondence, and each sub-pixel driving unit 422 and the anode of each sub-pixel light-emitting unit 412 are connected to each fuse unit 430 in a one-to-one correspondence. Furthermore, the abnormal bright spot self-repairing can be performed on the three sub-pixel light-emitting units 412 respectively.
  • any sub-pixel light-emitting unit 412 included in the light-emitting unit 410 has a bright spot abnormality, that is, when the output current of the sub-pixel light-emitting unit 412 is greater than the fuse current threshold, the corresponding fuse unit 430 will automatically fuse to automatically repair the bright spot abnormality. It greatly shortens the repair time of abnormal bright spots, improves the display effect, and improves the panel production efficiency.
  • a pixel circuit in one embodiment, as shown in FIG. 5, a pixel circuit is provided, the pixel circuit includes a light-emitting unit 510, the light-emitting unit 510 includes at least one sub-pixel light-emitting unit; a pixel driving unit 520, the pixel driving unit 520 includes at least one Sub-pixel driving unit 522; fuse unit 530, the fuse unit 530 is connected between the sub-pixel drive unit 522 and the anode of the sub-pixel light-emitting unit; when the current output by the sub-pixel drive unit 522 is greater than the fuse current threshold, the fuse unit 530 is disconnected .
  • the light-emitting unit 510 includes a red pixel light-emitting unit 512, a green pixel light-emitting unit 514, and a blue pixel light-emitting unit 516;
  • the pixel driving unit 520 includes three sub-pixel driving units 522; each sub-pixel driving unit 522 is respectively connected to the red pixel light-emitting unit 512 ,
  • the anodes of the green pixel light-emitting unit 514 and the blue pixel light-emitting unit 516 are connected in a one-to-one correspondence;
  • the red pixel light-emitting unit 512 and the corresponding sub-pixel driving unit 522 are connected with a fuse unit 530;
  • the green pixel light-emitting unit 514 and the corresponding sub-pixel A fuse unit 530 is connected between the pixel driving units 522;
  • a fuse unit 530 is connected between the blue pixel light-emitting unit 516 and the corresponding sub-pixel driving unit 522.
  • the red pixel light-emitting unit, the green pixel light-emitting unit and the blue pixel light-emitting unit can be self-repaired for abnormal bright spots.
  • any one of the sub-pixel light-emitting units (red pixel light-emitting unit, green pixel light-emitting unit or blue pixel light-emitting unit) included in the light-emitting unit has a bright spot abnormality, that is, the sub-pixel light-emitting unit (red pixel light-emitting unit, green pixel light-emitting unit) (Or blue pixel light-emitting unit) when the output current is greater than the fusing current threshold, the corresponding fusing unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot, improves the display effect, and improves the panel production efficiency .
  • the sub-pixel light-emitting unit is an OLED (Organic Light-Emitting Diode, organic light-emitting diode).
  • light-emitting diodes can also be Micro LED (mini light emitting diode), Mini LED (mini light emitting diode) or ⁇ LED (mini light emitting diode).
  • a display panel which includes the pixel circuit as described above.
  • a fuse unit that can be fused under high current is provided at the connection between the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, and then when the sub-pixel light-emitting unit has a bright spot abnormality, that is, the sub-pixel light-emitting unit outputs current When it is greater than the fuse current threshold, the fuse unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot, improves the display effect of the display panel, and improves the production efficiency of the display panel.
  • this application is particularly suitable for organic light-emitting diode display panels, but is not limited to this, and can be applied to various current-driven display panels, such as miniature light-emitting diode display panels, mini light-emitting diodes (Mini The LED) display panel can automatically repair the abnormal bright spots of the panel, greatly shorten the repair time of the abnormal bright spots, improve the display effect, and improve the production efficiency of the panel.
  • various current-driven display panels such as miniature light-emitting diode display panels, mini light-emitting diodes (Mini The LED) display panel can automatically repair the abnormal bright spots of the panel, greatly shorten the repair time of the abnormal bright spots, improve the display effect, and improve the production efficiency of the panel.
  • a display device is also provided, and the display device includes the above-mentioned display panel.
  • a fuse unit that can be fused under high current is provided at the connection between the anode of the sub-pixel light-emitting unit and the sub-pixel driving unit, and then when the sub-pixel light-emitting unit has a bright spot abnormality, that is, the sub-pixel light-emitting unit outputs current When it is greater than the fuse current threshold, the fuse unit will automatically fuse to automatically repair the abnormal bright spot, which greatly shortens the repair time of the abnormal bright spot, improves the display effect of the display device, and improves the production efficiency of the display device.
  • the display panel is an OLED display panel, a Micro LED display panel, a Mini LED display panel or a ⁇ LED display panel.

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Abstract

一种像素电路及其显示面板、显示装置，其中，像素电路包括：发光单元（110, 210, 310, 410, 510），发光单元（110, 210, 310, 410, 510）包括至少一个子像素发光单元（112, 212, 312, 412）；像素驱动单元（120, 220, 320, 420, 520），像素驱动单元（120, 220, 320, 420, 520）包括至少一个子像素驱动单元（122, 222, 322, 422, 522）；熔断单元（130, 230, 430, 530），熔断单元（130, 230, 430, 530）连接在子像素驱动单元（122, 222, 322, 422, 522）与子像素发光单元（112, 212, 312, 412）的阳极之间；其中，在子像素驱动单元（122, 222, 322, 422, 522）输出的电流大于熔断电流阈值时，熔断单元（130, 230, 430, 530）断开。通过在子像素发光单元（112, 212, 312, 412）的阳极与子像素驱动单元（122, 222, 322, 422, 522）之间的连接处设置能够在高电流下熔断的熔断单元（130, 230, 430, 530），进而在子像素发光单元（112, 212, 312, 412）发生亮点异常时，即子像素发光单元（112, 212, 312, 412）输出电流大于熔断电流阈值时，熔断单元（130, 230, 430, 530）会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。

Description

像素电路及其显示面板、显示装置 技术领域
本申请涉及显示技术领域，更具体地说，涉及一种像素电路及其显示面板、显示装置。
 背景技术
在OLED 面板制作的过程中，受到机台稳定性及产线异物的影响，像素电路中不可避免的会出现异常亮点的情况，但由于异常情况复杂多样，需要解析后进行修复，此过程中可能会损伤面板且需要消耗巨大的时间，造成严重的资源浪费，由于OLED发生异常亮点现象时，通常是因为VDD直接与OLED阳极短路，产生较大的电流。
 技术问题
在实现过程中，发明人发现传统技术中至少存在如下问题：传统的OLED面板在制作的过程中，面板内存在一定的亮点、暗点的异常，显示效果差，且对其异常亮点进行修复所耗时间长。
 技术解决方案
基于此，有必要针对传统的OLED面板在制作的过程中，面板内存在一定的亮点、暗点的异常，显示效果差，且对其异常亮点进行修复所耗时间长的问题，提供一种像素电路及其显示面板、显示装置。
为了实现上述目的，本发明实施例提供了一种像素电路，包括：
发光单元，发光单元包括至少一个子像素发光单元；
像素驱动单元，像素驱动单元包括至少一个子像素驱动单元；
熔断单元，熔断单元连接在子像素驱动单元与子像素发光单元的阳极之间；
其中，在子像素驱动单元输出的电流大于熔断电流阈值时，熔断单元断开。
另一方面，本发明实施例还提供了一种显示面板，包括像素电路；像素电路包括：
发光单元，发光单元包括至少一个子像素发光单元；
像素驱动单元，像素驱动单元包括至少一个子像素驱动单元；
熔断单元，熔断单元连接在子像素驱动单元与子像素发光单元的阳极之间；
其中，在子像素驱动单元输出的电流大于熔断电流阈值时，熔断单元断开。
另一方面，本发明实施例还提供了一种显示装置，包括显示面板；显示面板包括像素电路；像素电路包括：
发光单元，发光单元包括至少一个子像素发光单元；
像素驱动单元，像素驱动单元包括至少一个子像素驱动单元；
熔断单元，熔断单元连接在子像素驱动单元与子像素发光单元的阳极之间；
其中，在子像素驱动单元输出的电流大于熔断电流阈值时，熔断单元断开。
 有益效果
上述的像素电路的各实施例中，基于发光单元包括至少一个子像素发光单元；像素驱动单元包括至少一个子像素驱动单元；熔断单元连接在子像素驱动单元与子像素发光单元的阳极之间；进而在子像素驱动单元输出的电流大于熔断电流阈值时，熔断单元断开，使得子像素发光单元的阳极与子像素驱动单元之间断开，消除异常亮点影响。本申请通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置能够在高电流下熔断的熔断单元，进而在子像素发光单元发生亮点异常时，即子像素发光单元输出电流大于熔断电流阈值时，熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。
 附图说明
下面将结合附图及实施例对本申请作进一步说明，附图中：
图1为一个实施例中像素电路的第一结构示意图；
图2为一个实施例中像素电路的第二结构示意图；
图3为一个实施例中像素电路的第三结构示意图；
图4为一个实施例中像素电路的第四结构示意图；
图5为一个实施例中像素电路的第五结构示意图。
 本发明的实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示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发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
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，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；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。
以下结合附图对本申请的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。
请参照图1、图2、图3、图4和图5，下面将结合附图对本申请实施例提供的像素电路及其显示面板、显示装置作详细说明。
为了解决传统的OLED面板在制作的过程中，面板内存在一定的亮点、暗点的异常，显示效果差，且对其异常亮点进行修复所耗时间长的问题。在一个实施例中，如图1所示，提供了一种像素电路，包括：
发光单元110，发光单元110包括至少一个子像素发光单元112；
像素驱动单元120，像素驱动单元120包括至少一个子像素驱动单元122；
熔断单元130，熔断单元130连接在子像素驱动单元122与子像素发光单元112的阳极之间；
其中，在子像素驱动单元122输出的电流大于熔断电流阈值时，熔断单元130断开。
具体地，发光单元110指的是能够产生光源的器件或单元模块。发光单元110包括可包括至少一个子像素发光单元112，其中，发光单元110包含的各子像素发光单元112的位置可根据实际要求进行排列确定。子像素发光单元112指的是对应单个子像素的发光器件或单元模块，例如子像素发光单元112可以是对应RGB像素中的任意一种子像素的发光单元。像素驱动单元120可用来驱动发光单元点亮工作。例如，像素驱动单元120可输出电流驱动信号，并将输出的电流驱动信号传输至发光单元110，进而发光单元110根据电流驱动信号点亮。像素驱动单元120可包括至少一个子像素驱动单元122，其中，像素驱动单元120包含的各子像素驱动单元122的位置可根据实际要求进行排列确定。需要说明的是，像素驱动单元120包含的子像素驱动单元122个数与发光单元110包含的子像素发光单元112个数相等，且像素驱动单元120包含各子像素驱动单元122与发光单元110包含的子像素发光单元112一一对应连接。
熔断单元130指的是具有高电流熔断特性的器件。熔断单元130根据高电流熔断特性，在输入熔断单元130的电流超过熔断电流阈值时，会自动产生熔断。基于熔断单元130连接在子像素驱动单元122与子像素发光单元112的阳极之间，进而在子像素驱动单元122输出的电流大于熔断电流阈值时，熔断单元130自动断开，使得子像素驱动单元122与子像素发光单元112的阳极之间连接通路断开，防止异常亮点的影响。
具体而言，基于发光单元110包括至少一个子像素发光单元112；像素驱动单元120包括至少一个子像素驱动单元122；熔断单元130连接在子像素驱动单元122与子像素发光单元112的阳极之间；进而在子像素驱动单元122输出的电流大于熔断电流阈值时，熔断单元130断开，使得子像素发光单元112的阳极与子像素驱动单元122之间断开，消除异常亮点影响。
上述的的像素电路的实施例中，通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置能够在高电流下熔断的熔断单元，进而在子像素发光单元发生亮点异常时，即子像素发光单元输出电流大于熔断电流阈值时，熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。
在一个实施例中，如图2所示，提供了一种像素电路，该像素电路包括发光单元210，发光单元210包括至少一个子像素发光单元212；像素驱动单元220，像素驱动单元220包括至少一个子像素驱动单元222；熔断单元230，熔断单元230连接在子像素驱动单元222与子像素发光单元212的阳极之间；在子像素驱动单元222输出的电流大于熔断电流阈值时，熔断单元230断开。
其中，子像素驱动单元222包括驱动薄膜晶体管224；驱动薄膜晶体管224的漏极通过熔断单元连接子像素发光单元212的阳极。
具体地，驱动薄膜晶体管224指的是用于驱动子像素发光单元点亮工作的薄膜晶体管（TFT）。
进一步的，基于驱动薄膜晶体管224的漏极通过熔断单元230连接子像素发光单元212的阳极，进而在驱动薄膜晶体管224的栅极导通时，驱动薄膜晶体管224可将接入源极的电源高电压信号转换为电流信号，进而驱动薄膜晶体管224的漏极将输出的电流信号通过熔断单元230传输至子像素发光单元212的阳极，实现点亮子像素发光单元212。在电流信号的电流值大于熔断单元的熔断电流阈值时，熔断单元230自动断开，使得驱动薄膜晶体管224与子像素发光单元212之间的连接通路断开，进而可避免产生异常亮点，实现消除异常亮点影响，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。
在一个具体的实施例中，如图2所示，子像素驱动单元222还包括开关驱动薄膜晶体管226；开关薄膜晶体管226的漏极连接驱动薄膜晶体管224的栅极，源极用于接入数据信号，栅极用于接入扫描信号。
其中，开关驱动薄膜晶体管226指的是用于控制驱动薄膜晶体管通断的薄膜晶体管（TFT）。
具体地，基于开关薄膜晶体管226的漏极连接驱动薄膜晶体管224的栅极，源极用于接入数据信号，栅极用于接入扫描信号，进而在开关薄膜晶体管226的栅极接入高电位的扫描信号时，开关薄膜晶体管226导通，进而数据信号可接入开关薄膜晶体管226的源极后，并传输至驱动薄膜晶体管224的栅极，从而驱动薄膜晶体管224的栅极导通。在驱动薄膜晶体管224的栅极导通时，驱动薄膜晶体管224可将接入源极的电源高电压信号转换为电流信号，进而驱动薄膜晶体管224的漏极将输出的电流信号通过熔断单元230传输至子像素发光单元212的阳极，实现点亮子像素发光单元212。在电流信号的电流值大于熔断单元的熔断电流阈值时，熔断单元230自动断开，使得驱动薄膜晶体管224与子像素发光单元212之间的连接通路断开，进而可避免产生异常亮点，实现消除异常亮点影响，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。
在一个示例中，可通过扫描线向开关薄膜晶体管的的栅极传输扫描信号，可通过数据线向开关薄膜晶体管的源极传输数据信号。
在一个实施例中，子像素驱动单元为2TIC驱动单元或3T1C驱动单元。
具体地，2TIC驱动单元指的是包含2个TFT（薄膜晶体管）和1个电容的子像素驱动单元。3TIC驱动单元指的是包含3个TFT（薄膜晶体管）和1个电容的子像素驱动单元。
在一个实施例中，如图3所示，提供了一种像素电路，该像素电路包括发光单元310，发光单元310包括至少一个子像素发光单元312；像素驱动单元320，像素驱动单元320包括至少一个子像素驱动单元322；熔断单元，熔断单元连接在子像素驱动单元322与子像素发光单元312的阳极之间；在子像素驱动单元322输出的电流大于熔断电流阈值时，熔断单元断开。其中，熔断单元为高导金属件330。
具体地，高导金属件330指的是具有高电流易熔断特性的金属件。高导金属件330可根据高电流熔断特性，在输入高导金属件330的电流超过熔断电流阈值时，会自动产生熔断。
进一步的，基于高导金属件330连接在子像素驱动单元322与子像素发光单元312的阳极之间，进而在子像素驱动单元322输出的电流大于熔断电流阈值时，高导金属件330自动断开，使得子像素驱动单元322与子像素发光单元312的阳极之间连接通路断开，防止异常亮点，消除异常亮点影响。
上述的的像素电路的实施例中，通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置能够在高电流下熔断的高导金属件，进而在子像素发光单元发生亮点异常时，即子像素发光单元输出电流大于熔断电流阈值时，熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长。通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置高导金属件，相当于在像素电路中增加一道光罩，由于面板内的亮点内电流较大，将该高导金属件自动熔断，使得子像素发光单元的阳极与子像素驱动单元之间断开，消除亮点影响，实现了像素亮点自修复，提高了显示效果，提高了面板生产效率。
在一个实施例中，如图4所示，提供了一种像素电路，该像素电路包括发光单元410，发光单元410包括至少一个子像素发光单元412；像素驱动单元420，像素驱动单元420包括至少一个子像素驱动单元422；熔断单元430，熔断单元430连接在子像素驱动单元422与子像素发光单元412的阳极之间；在子像素驱动单元422输出的电流大于熔断电流阈值时，熔断单元430断开。
其中，发光单元410包括三个子像素发光单元412；像素驱动单元420包括三个子像素驱动单元422；各子像素驱动单元422与各子像素发光单元412的阳极一一对应连接；各子像素驱动单元422与各子像素发光单元412的阳极之间连接有熔断单元430。
具体地，当发光单元410包括三个子像素发光单元412；像素驱动单元420包括三个子像素驱动单元422时，熔断单元430的个数为三个，则各子像素驱动单元422与子像素发光单元412的阳极一一对应连接，各子像素驱动单元422与各子像素发光单元412的阳极之间一一对应连接各熔断单元430。进而可分别对三个子像素发光单元412进行异常亮点自修复。实现在发光单元410包含的任意一个子像素发光单元412发生亮点异常时，即该子像素发光单元412输出电流大于熔断电流阈值时，相应的熔断单元430会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高面板生产效率。
在一个实施例中，如图5所示，提供了一种像素电路，该像素电路包括发光单元510，发光单元510包括至少一个子像素发光单元；像素驱动单元520，像素驱动单元520包括至少一个子像素驱动单元522；熔断单元530，熔断单元530连接在子像素驱动单元522与子像素发光单元的阳极之间；在子像素驱动单元522输出的电流大于熔断电流阈值时，熔断单元530断开。
其中，发光单元510包括红色像素发光单元512，绿色像素发光单元514和蓝色像素发光单元516；像素驱动单元520包括三个子像素驱动单元522；各子像素驱动单元522分别与红色像素发光单元512，绿色像素发光单元514、蓝色像素发光单元516的阳极一一对应连接；红色像素发光单元512与相应的子像素驱动单元522之间连接有熔断单元530；绿色像素发光单元514与相应的子像素驱动单元522之间连接有熔断单元530；蓝色像素发光单元516与相应的子像素驱动单元522之间连接有熔断单元530。
上述实施例中，可分别对红色像素发光单元，绿色像素发光单元和蓝色像素发光单元进行异常亮点自修复。实现在发光单元包含的任意一个子像素发光单元（红色像素发光单元，绿色像素发光单元或蓝色像素发光单元）发生亮点异常时，即该子像素发光单元（红色像素发光单元，绿色像素发光单元或蓝色像素发光单元）输出电流大于熔断电流阈值时，相应的熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高面板生产效率。
在一个具体地实施例中，子像素发光单元为OLED（Organic Light-Emitting Diode，有机发光二极管）。
需要说明的是，发光二极管除了可以是OLED（有机发光二极管），还可以是Micro LED（微型发光二极管），Mini LED（迷你型发光二极管）或μLED（微型发光二极管）。
在一个实施例中，还提供了一种显示面板，该显示面板包括如上述任一项的像素电路。
具体地，通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置能够在高电流下熔断的熔断单元，进而在子像素发光单元发生亮点异常时，即子像素发光单元输出电流大于熔断电流阈值时，熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示面板的显示效果，提高了显示面板生产效率。
关于显示面板的具体限定可以参见上文中对于像素电路的限定，在此不再赘述。
需要说明的是，本申请特别适用于有机发光二极管显示面板，但不限于此，可以应用于各种电流驱动显示面板，如微型发光二极管显示面板，迷你发光二极管(Mini LED)显示面板，可实现对面板亮点异常的自动修复，极大的缩短了异常亮点的修复时长，提高了显示效果，提高了面板生产效率。
在一个实施例中，还提供了一种显示装置，该显示装置包括如上述的显示面板。
具体地，通过在子像素发光单元的阳极与子像素驱动单元之间的连接处设置能够在高电流下熔断的熔断单元，进而在子像素发光单元发生亮点异常时，即子像素发光单元输出电流大于熔断电流阈值时，熔断单元会自动熔断，对亮点异常进行自动修复，极大的缩短了异常亮点的修复时长，提高了显示装置的显示效果，提高了显示装置的生产效率。
在一个实施例中，显示面板为OLED显示面板，Micro LED显示面板，Mini LED显示面板或μLED显示面板。
关于显示装置的具体限定可以参见上文中对于像素电路及显示面板的限定，在此不再赘述。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未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。
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发明专利范围的限制。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 (17)

  1. 一种像素电路，其中，包括：
    发光单元，所述发光单元包括至少一个子像素发光单元；
    像素驱动单元，所述像素驱动单元包括至少一个子像素驱动单元；
    熔断单元，所述熔断单元连接在所述子像素驱动单元与所述子像素发光单元的阳极之间；
    其中，在所述子像素驱动单元输出的电流大于熔断电流阈值时，所述熔断单元断开。
  2. 根据权利要求1所述的像素电路，其中，所述子像素驱动单元包括驱动薄膜晶体管；
    所述驱动薄膜晶体管的漏极通过所述熔断单元连接所述子像素发光单元的阳极。
  3. 根据权利要求2所述的像素电路，其中，所述子像素驱动单元还包括开关驱动薄膜晶体管；
    所述开关薄膜晶体管的漏极连接所述驱动薄膜晶体管的栅极，源极用于接入数据信号，栅极用于接入扫描信号。
  4. 根据权利要求1所述的像素电路，其中，所述子像素驱动单元为2TIC驱动单元或3T1C驱动单元。
  5. 根据权利要求1所述的像素电路，其中，所述熔断单元为高导金属件。
  6. 根据权利要求1所述的像素电路，其中，所述发光单元包括三个子像素发光单元；所述像素驱动单元包括三个子像素驱动单元；
    各所述子像素驱动单元与所述子像素发光单元的阳极一一对应连接；
    各所述子像素驱动单元与各所述子像素发光单元的阳极之间连接有所述熔断单元。
  7. 根据权利要求6所述的像素电路，其中，三个所述子像素发光单元分别为红色像素发光单元，绿色像素发光单元和蓝色像素发光单元。
  8. 根据权利要求1所述的像素电路，其中，所述子像素发光单元为OLED。
  9. 一种显示面板，其中，包括像素电路；所述像素电路包括：
    发光单元，所述发光单元包括至少一个子像素发光单元；
    像素驱动单元，所述像素驱动单元包括至少一个子像素驱动单元；
    熔断单元，所述熔断单元连接在所述子像素驱动单元与所述子像素发光单元的阳极之间；
    其中，在所述子像素驱动单元输出的电流大于熔断电流阈值时，所述熔断单元断开。
  10. 根据权利要求9所述的显示面板，其中，所述子像素驱动单元包括驱动薄膜晶体管；
    所述驱动薄膜晶体管的漏极通过所述熔断单元连接所述子像素发光单元的阳极。
  11. 根据权利要求10所述的显示面板，其中，所述子像素驱动单元还包括开关驱动薄膜晶体管；
    所述开关薄膜晶体管的漏极连接所述驱动薄膜晶体管的栅极，源极用于接入数据信号，栅极用于接入扫描信号。
  12. 根据权利要求9所述的显示面板，其中，所述子像素驱动单元为2TIC驱动单元或3T1C驱动单元。
  13. 根据权利要求9所述的显示面板，其中，所述熔断单元为高导金属件。
  14. 根据权利要求9所述的显示面板，其中，所述发光单元包括三个子像素发光单元；所述像素驱动单元包括三个子像素驱动单元；
    各所述子像素驱动单元与所述子像素发光单元的阳极一一对应连接；
    各所述子像素驱动单元与各所述子像素发光单元的阳极之间连接有所述熔断单元。
  15. 根据权利要求14所述的显示面板，其中，三个所述子像素发光单元分别为红色像素发光单元，绿色像素发光单元和蓝色像素发光单元。
  16. 根据权利要求9所述的显示面板，其中，所述子像素发光单元为OLED。
  17. 一种显示装置，其中，包括显示面板；所述显示面板包括像素电路；所述像素电路包括：
    发光单元，所述发光单元包括至少一个子像素发光单元；
    像素驱动单元，所述像素驱动单元包括至少一个子像素驱动单元；
    熔断单元，所述熔断单元连接在所述子像素驱动单元与所述子像素发光单元的阳极之间；
    其中，在所述子像素驱动单元输出的电流大于熔断电流阈值时，所述熔断单元断开。
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