WO2021174647A1 - 一种显示面板及其缺陷修补方法 - Google Patents

一种显示面板及其缺陷修补方法 Download PDF

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Publication number
WO2021174647A1
WO2021174647A1 PCT/CN2020/084951 CN2020084951W WO2021174647A1 WO 2021174647 A1 WO2021174647 A1 WO 2021174647A1 CN 2020084951 W CN2020084951 W CN 2020084951W WO 2021174647 A1 WO2021174647 A1 WO 2021174647A1
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Prior art keywords
electrode
line
display panel
pixel
data line
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PCT/CN2020/084951
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English (en)
French (fr)
Inventor
朱静
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深圳市华星光电半导体显示技术有限公司
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Priority to US16/760,505 priority Critical patent/US20220187664A1/en
Publication of WO2021174647A1 publication Critical patent/WO2021174647A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G02F1/136263—Line defects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016—Brazing of electronic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/005—Soldering by means of radiant energy
    • B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/26—Seam welding of rectilinear seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/40—Removing material taking account of the properties of the material involved
    • B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
    • H01L21/76886—Modifying permanently or temporarily the pattern or the conductivity of conductive members, e.g. formation of alloys, reduction of contact resistances
    • H01L21/76892—Modifying permanently or temporarily the pattern or the conductivity of conductive members, e.g. formation of alloys, reduction of contact resistances modifying the pattern
    • H01L21/76894—Modifying permanently or temporarily the pattern or the conductivity of conductive members, e.g. formation of alloys, reduction of contact resistances modifying the pattern using a laser, e.g. laser cutting, laser direct writing, laser repair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/42—Printed circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • B23K2103/166—Multilayered materials
    • B23K2103/172—Multilayered materials wherein at least one of the layers is non-metallic
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G02F1/13629—Multilayer wirings

Definitions

  • the present application relates to the field of display technology, and in particular to a display panel and a defect repair method thereof.
  • Liquid crystal display is one of the most widely used flat panel displays.
  • the high aperture ratio, narrow frame and uniform charging rate at high frequency are TFT-LCD
  • Traditional pixel designs mainly include gate lines, data lines, common electrodes, and pixel electrodes.
  • the purpose of the existence of the common electrode (ACOM) is to realize the formation of a capacitance (Cst) between the common electrode and the pixel electrode, in order to improve the TFT-LCD Since leakage and other factors cause quality problems such as flicker, there is also a certain demand for the size of the capacitor (Cst), that is, the capacitor (Cst) cannot be too small. Therefore, the width of the common electrode (ACOM) at the frame position of the liquid crystal display is made wider, which is not conducive to the development of the narrow frame of the liquid crystal display.
  • the present application provides a display panel and a defect repairing method thereof, which can solve the problem of a wide frame of the traditional display panel and the prone to bright spots.
  • the present application provides a display panel including a display area and a frame area, and the display area includes:
  • the pixel electrode is correspondingly arranged in the pixel area enclosed by the scan line and the data line, and the pixel electrode includes a backbone electrode arranged in a cross shape;
  • a pixel driving device for electrically connecting the pixel electrode to the scan line and the data line;
  • a common electrode, the common electrode and the pixel electrode are arranged in a different layer structure, and the common electrode includes a first electrode line extending in a lateral direction and a second electrode line extending in a longitudinal direction;
  • the first electrode line and the second electrode line are arranged corresponding to the main electrode of the pixel electrode, and the part of the common electrode corresponding to the main electrode overlaps the main electrode.
  • the first electrode line and the scan line are provided in the same layer, and the second electrode line and the data line are provided in the same layer.
  • a dielectric layer is provided between the first electrode line and the second electrode line, and the first electrode line and the second electrode line pass through the Via electrical connection.
  • a plurality of the first electrode lines are arranged in parallel, and a plurality of the second electrode lines are arranged in parallel.
  • a row scan driving circuit and a row scan driving bus are provided in the frame area.
  • the orthographic projection of the portion of the common electrode corresponding to the main electrode on the display panel is within the range of the orthographic projection of the main electrode on the display panel.
  • the present application also provides a defect repair method for a display panel, the method includes the following steps:
  • Step S1 using a laser to cut off the part connecting the data line and the pixel driving device at the connection point of the data line and the pixel driving device;
  • Step S2 welding the pixel electrode and the second electrode line at a position where the pixel electrode and the second electrode line overlap.
  • the width of the portion of the data line corresponding to the cutting site is greater than or equal to the width of the rest of the data line.
  • an insulating layer is provided between the pixel electrode and the second electrode line, and the step S2 includes the following steps:
  • Step S201 using a laser at a preset position where the pixel electrode overlaps the second electrode line to form a welding hole penetrating the pixel electrode and the insulating layer;
  • step S202 laser irradiation is performed on the pixel electrode around the welding hole, so that the pixel electrode around the welding hole is in a molten state and is in line contact with the second electrode through the welding hole.
  • the present application also provides a display panel, including a display area and a frame area, the display area includes:
  • the pixel electrode is correspondingly arranged in the pixel area enclosed by the scan line and the data line, and the pixel electrode includes a backbone electrode arranged in a cross shape;
  • a pixel driving device for electrically connecting the pixel electrode to the scan line and the data line;
  • a common electrode, the common electrode and the pixel electrode are arranged in a different layer structure, and the common electrode includes a first electrode line extending in a lateral direction and a second electrode line extending in a longitudinal direction.
  • the second electrode lines cross to form a mesh structure;
  • the first electrode line and the second electrode line are arranged corresponding to the main electrode of the pixel electrode, and the part of the common electrode corresponding to the main electrode overlaps the main electrode.
  • the first electrode line and the scan line are provided in the same layer, and the second electrode line and the data line are provided in the same layer.
  • a dielectric layer is provided between the first electrode line and the second electrode line, and the first electrode line and the second electrode line pass through the Via electrical connection.
  • a plurality of the first electrode lines are arranged in parallel, and a plurality of the second electrode lines are arranged in parallel.
  • a row scan driving circuit and a row scan driving bus are provided in the frame area.
  • the orthographic projection of the portion of the common electrode corresponding to the main electrode on the display panel is within the range of the orthographic projection of the main electrode on the display panel.
  • the beneficial effects of this application are: the display panel and its defect repairing method provided in this application, by removing the common electrode (ACOM) as the reference capacitor (Cst Referene) in the frame area of the traditional display panel, and setting a double layer in the display area
  • the structure of the common electrode, and the common electrode is arranged at the cross main electrode of the pixel electrode, without occupying the pixel opening, thereby reducing the frame size and increasing the aperture ratio of the pixel.
  • the pixel electrode corresponding to the pixel that generates the bright spot is welded to the common electrode, so as to solve the problem that the pixel generates the bright spot due to the manufacturing process and the like.
  • FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of the frame area of a traditional display panel
  • FIG. 3 is a schematic diagram of the structure of the frame area of the display panel of the present application.
  • FIG. 4 is a schematic diagram of the structure of a common electrode provided by an embodiment of the application.
  • FIG. 5 is a flowchart of a defect repair method for a display panel provided by an embodiment of the application
  • FIG. 6 is a schematic diagram of defect repair of a display panel provided by an embodiment of the application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features.
  • “multiple” means two or more than two, unless otherwise specifically defined. In this application, “/” means “or”.
  • FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of this application.
  • the display panel includes a display area 100 and a frame area 200.
  • the display panel corresponding to the display area 100 includes: a plurality of scan lines 101 , Extending in the transverse direction; a plurality of data lines 102 extending in the longitudinal direction; the pixel area P enclosed by the scan line 101 and the data line 102; the pixel electrode 103, corresponding to the pixel area P, the pixel electrode 103 It includes a backbone electrode arranged in a cross shape; a pixel driving device 104 for electrically connecting the pixel electrode 103 to the scan line 101 and the data line 102; a common electrode 105, the common electrode 105 and the pixel
  • the electrodes 103 are arranged in a different-layer structure, and the common electrode 105 includes a first electrode line 105a extending in the lateral direction and a second electrode line 105b extending in the longitudinal direction.
  • the first electrode line 105a and the second electrode line 105a are arranged corresponding to the main electrode of the pixel electrode 103, and the main electrode includes a horizontal main electrode 103a arranged in a horizontal direction and a vertical main electrode 103b arranged in a longitudinal direction. .
  • the horizontal main electrode 103a and the vertical main electrode 103b are arranged in a crisscross pattern.
  • the portion of the common electrode 105 corresponding to the main electrode overlaps the main electrode, that is, the portion of the first electrode line 105a corresponding to the horizontal main electrode 103a overlaps the horizontal main electrode 103a, and the second electrode
  • the portion of the line 105a corresponding to the vertical main electrode 103b overlaps the vertical main electrode 103b.
  • the boundary area of the different domains in the pixel electrode that is, the area corresponding to the main electrode
  • appears as a dark pattern area which does not contribute to the transmittance and aperture ratio of the pixel electrode. .
  • the common electrode (ACOM) in the frame area of the traditional display panel is removed, and the common electrode (CF-COM) is arranged in the display area at the position corresponding to the cross-shaped main electrode, without occupying the pixel opening, which is in the reduction of frame size.
  • the aperture ratio of the pixel is improved. Since the level of the common electrode (CF-COM) is the reference electrode for liquid crystal rotation, there is no need to worry about light leakage.
  • first electrode line 105a and the scan line 101 are arranged in the same layer
  • second electrode line 105b and the data line 102 are arranged in the same layer.
  • first electrode line 105a and the scan line 101 are formed using the same material through the same photomask process
  • second electrode line 105b and the data line 102 are formed using the same material through the same photomask process.
  • the hood process is formed.
  • the common electrode 105 is used to form a capacitance (Cst) with the pixel electrode 103.
  • the orthographic projection of the portion of the common electrode 105 corresponding to the main electrode on the display panel is within the range of the orthographic projection of the main electrode on the display panel, so that the common electrode 105 does not affect the pixel performance. Opening rate.
  • FIG. 2 is a schematic diagram of the structure of the frame area of a traditional display panel
  • FIG. 3 is a schematic diagram of the structure of the frame area of the display panel of the present application.
  • a common electrode (ie, C-COM) 210, a GOA bus (ie, row scan drive bus) 220, a GOA circuit (ie, row scan drive circuit) 230, and a common electrode (ie, A-COM) 240 are provided in the frame area 200 of a conventional display panel. Only the GOA bus 220 and the GOA circuit 230 are provided in the frame area 200 of the display panel of this application. Because this application removes the common electrode (ie A-COM) 240 and moves the common electrode (C-COM) 210 to the display Therefore, the frame of the display panel of the present application is greatly reduced.
  • FIG. 4 it is a schematic diagram of the structure of the common electrode provided by the embodiment of this application.
  • the first electrode lines 105a and the second electrode lines 105b cross to form a mesh structure.
  • a dielectric layer is provided between the first electrode line 105a and the second electrode line 105b, and the first electrode line 105a and the second electrode line 105b are electrically connected through the via hole 300 on the dielectric layer. connect.
  • a plurality of the first electrode lines 105a are arranged in parallel in a horizontal direction
  • a plurality of the second electrode lines 105b are arranged in parallel in a longitudinal direction, so that the design of the common electrode 105 is relatively stable, and there is no need to worry about picture quality problems caused by coupling.
  • the frame area 200 of the display panel includes a bonding area in which a chip-on-chip film 201 is bonded.
  • the data line 102 and the first electrode line 105a are electrically connected to the chip-on-chip film 201, respectively. connect.
  • the pixel electrode 103 may further include a branch electrode connected to the main electrode, which is not limited here.
  • the pixel structure of the display panel is 4-domain. In other embodiments, the pixel structure of the display panel may also be 8-domain or the like.
  • the present application also provides a defect repair method for a display panel as provided in the above-mentioned embodiment.
  • the display panel is a liquid crystal panel.
  • the defect repair method of the display panel provided by the present application can effectively solve the defect.
  • the defect repair method of the display panel includes the following steps:
  • step S1 a laser is used to cut off the connection part of the data line 102 and the pixel driving device 104 at the connection site of the data line 102 and the pixel driving device 104.
  • the width of the part of the data line 102 corresponding to the cutting point Q is greater than or equal to the width of the remaining part of the data line 102. In this way, it is avoided that the data line 102 is damaged during the cutting process, thereby causing the risk of disconnection and the like.
  • Step S2 welding the pixel electrode 103 and the second electrode line 105b at a position where the pixel electrode 103 overlaps the second electrode line 105b.
  • step S2 includes the following steps:
  • step S201 at a preset position where the pixel electrode 103 overlaps the second electrode line 105b, a laser is used to form a welding hole 400 penetrating the pixel electrode 103 and the insulating layer.
  • Step S202 Perform laser irradiation on the pixel electrode 103 around the welding hole 400, so that the pixel electrode 103 around the welding hole 400 is in a molten state and passes through the welding hole 400 and the second electrode line. 105b contact.
  • the pixel electrode 103 Since the pixel electrode 103 is welded to the common electrode 105, the pixel electrode 103 and the common electrode 105 are short-circuited, that is, the potential of the pixel electrode 103 and the common electrode 105 are equal, so the pixel electrode The liquid crystal in the corresponding area will not be deflected, and it will be in the dark state, that is, the pixels with poor bright spots will be repaired to the dark state.
  • the display panel of the present application removes the common electrode (ACOM) used as the reference capacitor (Cst Referene) in the frame area of the traditional display panel, sets the common electrode of the double-layer structure in the display area, and connects the common electrode It is arranged at the cross main electrode of the pixel electrode without occupying the pixel opening, thereby reducing the frame size and increasing the pixel aperture ratio.
  • the defect repair method of the display panel of the present application welds the pixel electrode corresponding to the pixel that produces the bright spot with the common electrode, so that the potential of the pixel electrode and the common electrode are equal, so the liquid crystal corresponding to the pixel does not rotate, that is, the dark state, thereby solving Pixels produce bright spots due to manufacturing process and other reasons.

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Abstract

一种显示面板及其缺陷修补方法，该显示面板包括显示区（100）和边框区（200），显示区（100）包括扫描线（101）和数据线（102）；像素电极（103）对应设于扫描线（101）与数据线（102）围成的像素区域，其包括呈十字型的主干电极（103a, 103b）；公共电极（105）与像素电极（103）呈异层结构设置，公共电极（105）包括第一电极线（105a）和第二电极线（105b）；公共电极（105）对应主干电极（103a, 103b）的部分与主干电极（103a, 103b）重叠。

Description

一种显示面板及其缺陷修补方法 技术领域
本申请涉及显示技术领域，尤其涉及一种显示面板及其缺陷修补方法。
 背景技术
液晶显示器（LCD）是最广泛使用的平板显示器之一，高开口率、窄边框以及高频率下充电率均匀是TFT-LCD 面板厂追求的目标。传统的像素设计主要包括栅极线、数据线、公共电极以及像素电极等。其中，公共电极（ACOM）的存在目的是为了实现公共电极和像素电极之间形成电容（Cst），为了改善TFT-LCD 由于漏电等因素引起闪烁等品质问题，故而对电容（Cst）的大小亦有一定的需求，即电容（Cst）不能过小。从而，使得液晶显示器边框位置的公共电极（ACOM）的宽度较宽，不利于液晶显示器窄边框的发展。
因此，现有技术存在缺陷，急需解决。
 技术问题
本申请提供一种显示面板及其缺陷修补方法，能够解决传统显示面板边框较宽，以及容易产生亮点的问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种显示面板，包括显示区和边框区，所述显示区包括：
扫描线，沿横向延伸；
数据线，沿纵向延伸；
像素电极，对应设置于所述扫描线与所述数据线围成的像素区域，所述像素电极包括呈十字型设置的主干电极；
像素驱动器件，用于将所述像素电极电连接至所述扫描线和所述数据线；
公共电极，所述公共电极与所述像素电极呈异层结构设置，所述公共电极包括沿横向延伸的第一电极线和沿纵向延伸的第二电极线；
其中，所述第一电极线与所述第二电极线对应所述像素电极的主干电极设置，所述公共电极对应所述主干电极的部分与所述主干电极重叠。
在本申请的显示面板中，所述第一电极线与所述扫描线同层设置，所述第二电极线与所述数据线同层设置。
在本申请的显示面板中，所述第一电极线与所述第二电极线之间设置有介电层，所述第一电极线和所述第二电极线通过所述介电层上的过孔电连接。
在本申请的显示面板中，多条所述第一电极线并联设置，多条所述第二电极线并联设置。
在本申请的显示面板中，所述边框区内设有行扫描驱动电路和行扫描驱动总线。
在本申请的显示面板中，所述公共电极对应所述主干电极的部分在所述显示面板上的正投影位于所述主干电极在所述显示面板上的正投影的范围内。
本申请还提供一种显示面板的缺陷修补方法，所述方法包括以下步骤：
步骤S1，采用激光在所述数据线与所述像素驱动器件的连接位点处将所述数据线与所述像素驱动器件连接的部分切断；
步骤S2，在所述像素电极与所述第二电极线重叠的位置将所述像素电极与所述第二电极线熔接。
在本申请的显示面板的缺陷修补方法中，所述数据线与所述像素驱动器件切断后，所述数据线对应切割位点的部分的宽度大于或等于所述数据线其余部分的宽度。
在本申请的显示面板的缺陷修补方法中，所述像素电极与所述第二电极线之间设有绝缘层，所述步骤S2包括以下步骤：
步骤S201，在所述像素电极与所述第二电极线重叠的预设位置采用激光镭射形成贯穿所述像素电极和所述绝缘层的熔接孔；
步骤S202，对所述熔接孔周边的所述像素电极进行镭射，以使所述熔接孔周边的所述像素电极呈熔融状态并经由所述熔接孔与所述第二电极线接触。
为解决上述问题，本申请还提供一种显示面板，包括显示区和边框区，所述显示区包括：
扫描线，沿横向延伸；
数据线，沿纵向延伸；
像素电极，对应设置于所述扫描线与所述数据线围成的像素区域，所述像素电极包括呈十字型设置的主干电极；
像素驱动器件，用于将所述像素电极电连接至所述扫描线和所述数据线；
公共电极，所述公共电极与所述像素电极呈异层结构设置，所述公共电极包括沿横向延伸的第一电极线和沿纵向延伸的第二电极线，所述第一电极线与所述第二电极线交叉形成网状结构；
其中，所述第一电极线与所述第二电极线对应所述像素电极的主干电极设置，所述公共电极对应所述主干电极的部分与所述主干电极重叠。
在本申请的显示面板中，所述第一电极线与所述扫描线同层设置，所述第二电极线与所述数据线同层设置。
在本申请的显示面板中，所述第一电极线与所述第二电极线之间设置有介电层，所述第一电极线和所述第二电极线通过所述介电层上的过孔电连接。
在本申请的显示面板中，多条所述第一电极线并联设置，多条所述第二电极线并联设置。
在本申请的显示面板中，所述边框区内设有行扫描驱动电路和行扫描驱动总线。
在本申请的显示面板中，所述公共电极对应所述主干电极的部分在所述显示面板上的正投影位于所述主干电极在所述显示面板上的正投影的范围内。
 有益效果
本申请的有益效果为：本申请提供的显示面板及其缺陷修补方法，通过将传统显示面板边框区域的作为参考电容（Cst Referene）的公共电极（ACOM）移除，在显示区内设置双层结构的公共电极，并将公共电极设置于像素电极的十字主干电极处，无需占用像素开口，从而减小边框尺寸的同时，提高像素的开口率。此外，本申请通过将产生亮点的像素所对应的像素电极与公共电极熔接，从而解决像素由于制程等原因产生亮点的不良现象。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本申请实施例提供的显示面板的结构示意图；
图2为传统显示面板的边框区的结构示意图；
图3为本申请的显示面板的边框区的结构示意图；
图4为本申请实施例提供的公共电极的结构示意图；
图5为本申请实施例提供的显示面板的缺陷修补方法流程图；
图6为本申请实施例提供的显示面板的缺陷修补示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅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，本领域技术人员在没有作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，需要理解的是，术语“纵向”、“横向”、“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”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申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。在本申请中，“/”表示“或者”的意思。
本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。
请参照图1所示，为本申请实施例提供的显示面板的结构示意图，所述显示面板包括显示区100和边框区200，所述显示面板对应所述显示区100包括：多条扫描线101，沿横向延伸；多条数据线102，沿纵向延伸；所述扫描线101与所述数据线102围成的像素区域P；像素电极103，对应所述像素区域P设置，所述像素电极103包括呈十字型设置的主干电极；像素驱动器件104，用于将所述像素电极103电连接至所述扫描线101和所述数据线102；公共电极105，所述公共电极105与所述像素电极103呈异层结构设置，所述公共电极105包括沿横向延伸的第一电极线105a和沿纵向延伸的第二电极线105b。
其中，所述第一电极线105a与所述第二电极线105a对应所述像素电极103的主干电极设置，所述主干电极包括沿横向设置的横向主干电极103a和沿纵向设置的纵向主干电极103b。所述横向主干电极103a和所述纵向主干电极103b十字交叉设置。
所述公共电极105对应所述主干电极的部分与所述主干电极重叠，即所述第一电极线105a对应所述横向主干电极103a的部分与所述横向主干电极103a重叠，所述第二电极线105a对应所述纵向主干电极103b的部分与所述纵向主干电极103b重叠。通常由于像素电极设计的畴（Domain）的方式不同，通常像素电极中间不同畴的交界区域（即主干电极对应的区域）呈现为暗纹区域，对像素电极的透过率和开口率无所贡献。本实施例将传统显示面板的边框区的公共电极（ACOM）移除，将公共电极（CF-COM）设置于显示区内对应十字主干电极的位置，无需占用像素开口，在减小边框尺寸的同时，提高像素的开口率。由于公共电极（CF-COM）的位准是液晶旋转的参考电极，故无需担心漏光问题。
其中，所述第一电极线105a与所述扫描线101同层设置，所述第二电极线105b与所述数据线102同层设置。
进一步的，所述第一电极线105a与所述扫描线101是采用同种材料经同一光罩工艺形成的，所述第二电极线105b与所述数据线102是采用同种材料经同一光罩工艺形成的。
在本实施例中，所述公共电极105用于与所述像素电极103形成电容（Cst）。所述公共电极105对应所述主干电极的部分在所述显示面板上的正投影位于所述主干电极在所述显示面板上的正投影的范围内，从而使所述公共电极105不影响像素的开口率。
结合图2和图3所示，图2为传统显示面板的边框区的结构示意图；图3为本申请的显示面板的边框区的结构示意图。传统显示面板的边框区200内设置有公共电极（即C-COM）210、GOA总线（即行扫描驱动总线）220、GOA电路（即行扫描驱动电路）230以及公共电极（即A-COM）240。本申请的显示面板的边框区200内仅设置有GOA总线220和GOA电路230，由于本申请将公共电极（即A-COM）240移除，并将公共电极（C-COM）210移至显示区的主干电极处，因此，本申请的显示面板的边框大大减小。
结合图4所示，为本申请实施例提供的公共电极的结构示意图。所述第一电极线105a与所述第二电极线105b交叉形成网状结构。所述第一电极线105a与所述第二电极线105b之间设置有介电层，所述第一电极线105a和所述第二电极线105b通过所述介电层上的过孔300电连接。其中，多条所述第一电极线105a横向并联设置，多条所述第二电极线105b纵向并联设置，如此所述公共电极105设计较稳，无需担心耦合导致的画面品质问题。
所述显示面板的边框区200内包括绑定区，所述绑定区内绑定有覆晶薄膜201，所述数据线102及所述第一电极线105a分别与所述覆晶薄膜201电连接。
在一种实施例中，所述像素电极103还可以包括与所述主干电极连接的分支电极，此处不做限制。
在本实施例中，所述显示面板的像素结构为4畴，在其他实施例中显示面板的像素结构还可以为8畴等。
如图5所示，本申请还提供一种如上述实施例提供的显示面板的缺陷修补方法，所述显示面板为液晶面板，显示面板的像素由于制程等原因容易产生亮点等不良现象，影响显示面板的品质。本申请提供的显示面板的缺陷修补方法可以有效的解决该缺陷，结合图5和图6所示，显示面板的缺陷修补方法包括以下步骤：
步骤S1，采用激光在所述数据线102与所述像素驱动器件104的连接位点处将所述数据线102与所述像素驱动器件104连接的部分切断。
其中，所述数据线102与所述像素驱动器件104切断后，所述数据线102对应切割位点Q的部分的宽度大于或等于所述数据线102其余部分的宽度。从而避免在切割制程中对所述数据线102造成损伤，进而导致断线等风险。
可以理解的是，上述步骤只是将产生亮点等不良现象的像素所对应的像素驱动器件和与之连接的数据线进行切断，以将产生亮点的像素进行修补。
步骤S2，在所述像素电极103与所述第二电极线105b重叠的位置将所述像素电极103与所述第二电极线105b熔接。
具体地，所述像素电极103与所述第二电极线105b之间设有绝缘层，所述步骤S2包括以下步骤：
步骤S201，在所述像素电极103与所述第二电极线105b重叠的预设位置采用激光镭射形成贯穿所述像素电极103和所述绝缘层的熔接孔400。
步骤S202，对所述熔接孔400周边的所述像素电极103进行镭射，以使所述熔接孔400周边的所述像素电极103呈熔融状态并经由所述熔接孔400与所述第二电极线105b接触。
由于将所述像素电极103熔接至所述公共电极105上，使得所述像素电极103与所述公共电极105短路，即所述像素电极103与所述公共电极105的电位相等，故而该像素电极对应区域的液晶不发生偏转，就为暗态，也就是将产生亮点不良的像素修补为暗态。
综上所述，本申请的显示面板通过将传统显示面板边框区域的作为参考电容（Cst Referene）的公共电极（ACOM）移除，在显示区内设置双层结构的公共电极，并将公共电极设置于像素电极的十字主干电极处，无需占用像素开口，从而减小边框尺寸的同时，提高像素的开口率。本申请显示面板的缺陷修补方法通过将产生亮点的像素所对应的像素电极与公共电极熔接，使得像素电极和公共电极的电位相等，故而该像素对应的液晶不发生旋转即为暗态，从而解决像素由于制程等原因产生亮点的不良现象。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种显示面板，其包括显示区和边框区，所述显示区包括：
    扫描线，沿横向延伸；
    数据线，沿纵向延伸；
    像素电极，对应设置于所述扫描线与所述数据线围成的像素区域，所述像素电极包括呈十字型设置的主干电极；
    像素驱动器件，用于将所述像素电极电连接至所述扫描线和所述数据线；
    公共电极，所述公共电极与所述像素电极呈异层结构设置，所述公共电极包括沿横向延伸的第一电极线和沿纵向延伸的第二电极线；
    其中，所述第一电极线与所述第二电极线对应所述像素电极的主干电极设置，所述公共电极对应所述主干电极的部分与所述主干电极重叠。
  2. 根据权利要求1所述的显示面板，其中，所述第一电极线与所述扫描线同层设置，所述第二电极线与所述数据线同层设置。
  3. 根据权利要求2所述的显示面板，其中，所述第一电极线与所述第二电极线之间设置有介电层，所述第一电极线和所述第二电极线通过所述介电层上的过孔电连接。
  4. 根据权利要求3所述的显示面板，其中，多条所述第一电极线并联设置，多条所述第二电极线并联设置。
  5. 根据权利要求1所述的显示面板，其中，所述边框区内设有行扫描驱动电路和行扫描驱动总线。
  6. 根据权利要求1所述的显示面板，其中，所述公共电极对应所述主干电极的部分在所述显示面板上的正投影位于所述主干电极在所述显示面板上的正投影的范围内。
  7. 一种如权利要求1所述的显示面板的缺陷修补方法，其中，所述方法包括以下步骤：
    步骤S1，采用激光在所述数据线与所述像素驱动器件的连接位点处将所述数据线与所述像素驱动器件连接的部分切断；
    步骤S2，在所述像素电极与所述第二电极线重叠的位置将所述像素电极与所述第二电极线熔接。
  8. 根据权利要求7所述的显示面板的缺陷修补方法，其中，所述数据线与所述像素驱动器件切断后，所述数据线对应切割位点的部分的宽度大于或等于所述数据线其余部分的宽度。
  9. 根据权利要求7所述的显示面板的缺陷修补方法，其中，所述像素电极与所述第二电极线之间设有绝缘层，所述步骤S2包括以下步骤：
    步骤S201，在所述像素电极与所述第二电极线重叠的预设位置采用激光镭射形成贯穿所述像素电极和所述绝缘层的熔接孔；
    步骤S202，对所述熔接孔周边的所述像素电极进行镭射，以使所述熔接孔周边的所述像素电极呈熔融状态并经由所述熔接孔与所述第二电极线接触。
  10. 一种显示面板，其包括显示区和边框区，所述显示区包括：
    扫描线，沿横向延伸；
    数据线，沿纵向延伸；
    像素电极，对应设置于所述扫描线与所述数据线围成的像素区域，所述像素电极包括呈十字型设置的主干电极；
    像素驱动器件，用于将所述像素电极电连接至所述扫描线和所述数据线；
    公共电极，所述公共电极与所述像素电极呈异层结构设置，所述公共电极包括沿横向延伸的第一电极线和沿纵向延伸的第二电极线，所述第一电极线与所述第二电极线交叉形成网状结构；
    其中，所述第一电极线与所述第二电极线对应所述像素电极的主干电极设置，所述公共电极对应所述主干电极的部分与所述主干电极重叠。
  11. 根据权利要求10所述的显示面板，其中，所述第一电极线与所述扫描线同层设置，所述第二电极线与所述数据线同层设置。
  12. 根据权利要求11所述的显示面板，其中，所述第一电极线与所述第二电极线之间设置有介电层，所述第一电极线和所述第二电极线通过所述介电层上的过孔电连接。
  13. 根据权利要求12所述的显示面板，其中，多条所述第一电极线并联设置，多条所述第二电极线并联设置。
  14. 根据权利要求10所述的显示面板，其中，所述边框区内设有行扫描驱动电路和行扫描驱动总线。
  15. 根据权利要求10所述的显示面板，其中，所述公共电极对应所述主干电极的部分在所述显示面板上的正投影位于所述主干电极在所述显示面板上的正投影的范围内。
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