WO2020211141A1 - 显示面板的垂直淡线修复方法及显示面板 - Google Patents

显示面板的垂直淡线修复方法及显示面板 Download PDF

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Publication number
WO2020211141A1
WO2020211141A1 PCT/CN2019/087493 CN2019087493W WO2020211141A1 WO 2020211141 A1 WO2020211141 A1 WO 2020211141A1 CN 2019087493 W CN2019087493 W CN 2019087493W WO 2020211141 A1 WO2020211141 A1 WO 2020211141A1
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Prior art keywords
wire
fan
display panel
out line
line
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Ceased
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PCT/CN2019/087493
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English (en)
French (fr)
Inventor
刘梦阳
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US16/605,570 priority Critical patent/US20220050345A1/en
Publication of WO2020211141A1 publication Critical patent/WO2020211141A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • 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
    • 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
    • B23K26/244—Overlap seam welding
    • 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
    • G02F1/133345—Insulating layers
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • 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
    • G02F1/136—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
    • G02F1/136295—Materials; Compositions; Manufacture processes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/441—Interconnections, e.g. scanning lines
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/031—Manufacture or treatment of conductive parts of the interconnections
    • H10W20/067—Manufacture or treatment of conductive parts of the interconnections by modifying the pattern of conductive parts
    • H10W20/068—Manufacture or treatment of conductive parts of the interconnections by modifying the pattern of conductive parts by using a laser, e.g. laser cutting or laser direct writing
    • 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
    • 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
    • B23K2101/38—Conductors
    • 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
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • 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 invention relates to the field of display technology, and in particular to a method for repairing vertical thin lines of a display panel.
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates, and control the direction of the liquid crystal molecules to change the direction of the liquid crystal molecules through whether the glass substrate is energized or not, and to refract the light from the backlight module to produce images.
  • a liquid crystal display panel consists of a color filter (CF) substrate, a thin film transistor (TFT) array substrate, a liquid crystal (LC) sandwiched between the color filter substrate and the TFT array substrate, and a sealant frame (Sealant) composition.
  • CF color filter
  • TFT thin film transistor
  • LC liquid crystal
  • the array substrate includes a display area and a non-display area.
  • the display area is provided with criss-crossed gate lines and data lines for controlling each pixel to achieve image display
  • the non-display area is provided with a driving chip and its Fanout line connected.
  • the gate drive signal and data signal are sent from the control chip in the liquid crystal display, usually using Chip On Film (COF) to transmit the gate drive signal and data signal to the gate line and data line on the substrate respectively .
  • COF Chip On Film
  • Each fan-out line provides a display signal for the display area.
  • the fan-out lines are usually designed to be concentrated toward the driving chip to form a fan-out area (Fan-out).
  • fan-out lines have single-layer and double-layer wire structures.
  • the double-layer wire structure can reduce the resistance of the fan-out line, thereby reducing signal loss. Therefore, the fan-out line on the array substrate generally adopts double-layer wires.
  • the structure includes two wires. After the two wires are connected in parallel, one end is connected to one of the signal lines, and the other end is connected to a connection terminal on the control chip.
  • the two wires of the fan-out line are made, one of the two wires may be disconnected due to foreign matter in the film, which will increase the impedance of the fan-out line and make the fan-out line pass through.
  • the loss of the transmitted signal is large, causing vertical fading lines on the display screen, which affects the display effect.
  • the purpose of the present invention is to provide a method for repairing the vertical thin lines of the display panel, which can solve the problem that the single-layer wire in the fan-out line of the double-layer wire structure is disconnected and the impedance increases, thereby causing the display screen to appear vertical thin lines, which affects the display effect And the technical problem of reducing the quality level of the display panel.
  • the object of the present invention is also to provide a display panel, which can solve the problem of increased impedance due to the disconnection of the single-layer wire in the fan-out line of the double-layer wire structure, thereby causing vertical thin lines in the display screen, affecting the display effect and reducing the quality of the display panel Level of technical issues.
  • the present invention provides a method for repairing a vertical thin line of a display panel.
  • the display panel is provided with a fan-out line, the fan-out line adopts a double-layer wire structure, and the fan-out line includes a laminated first wire and A second wire, an insulating layer for insulating the space is provided between the first wire and the second wire, and one of the first wire and the second wire has a gap; the vertical thin wire of the display panel is repaired Methods include:
  • N welding points at equal intervals are formed on the fan-out line, and the n welding points divide the fan-out line into n+1 line segments.
  • the first wire and the second wire are located at each welding point. It is conducted by the soldering point, where n is a natural number greater than or equal to 4.
  • the welding point is formed by laser welding.
  • the step of forming the welding point by using a laser welding method includes: irradiating the fan-out line with a laser, the insulating layer is broken under the laser irradiation, and the first wire and the second wire are melted under the laser irradiation. A solder joint is formed in the broken insulating layer.
  • Both ends of the first wire are electrically connected to both ends of the second wire to form both ends of the fan-out wire.
  • the display panel is divided into a display area and a bonding area located outside the display area, the display area has a plurality of signal lines, and the bonding area is provided with pads for connecting a driver chip; the plurality of signal lines include Multiple crisscrossed gate lines and data lines.
  • the fan-out line is arranged on the bonding area, one end of the fan-out line is connected with the gate line or the data line, and the other end is connected with the pad.
  • Both the first wire and the second wire are metal wires.
  • the first wire and the second wire are both aluminum wires.
  • the present invention also provides a display panel, which is manufactured by adopting the method for repairing the vertical thin lines of the display panel as described above.
  • the beneficial effects of the present invention when vertical thin lines appear on the display screen of the display panel, 4 or If there are more than 4 soldering points, the first wire and the second wire laminated by the conductive fan-out line and separated by the insulating layer, no matter where the single-layer wire of the fan-out line is disconnected, the impedance difference between the fan-out line and the normal fan-out line All are reduced from 100% before repair to 20% or below 20%, which can solve the problem that the single-layer wire in the fan-out line of the double-layer wire structure is disconnected and the impedance increases, which in turn makes the display screen appear vertical thin lines, which affects the display effect. Reduce the technical problems of the display panel quality level, effectively improve the efficiency and success rate of vertical thin line repair.
  • FIG. 1 is a schematic diagram of a method for repairing vertical thin lines of a display panel of the present invention
  • Figure 2 is a schematic diagram of a fan-out line with a double-layer wire structure in a normal state
  • Figure 3 is a schematic diagram of a fan-out line with a double-layer wire structure when a single-layer film is broken;
  • FIG. 4 is a schematic diagram of the fan-out line of FIG. 3 after being repaired using the vertical thin line repair method of the present invention.
  • the present invention first provides a method for repairing a vertical thin line of a display panel, which is used to repair a display panel that has a vertical thin line on the display screen due to the disconnection of a single-layer wire in the fan-out line of the double-layer wire structure .
  • the display panel is provided with a fan-out line 1
  • the fan-out line 1 adopts a double-layer wire structure
  • the fan-out line 1 includes a first wire 11 and a second wire 12 that are stacked
  • the first wire 11 and the second wire 12 is provided with an insulating layer 15 for insulating and spacing it
  • one of the first wire 11 and the second wire 12 has a gap 19, and both ends of the first wire 11 are connected to two of the second wire 12 respectively.
  • the ends are electrically connected to form both ends of the fan-out line 1.
  • the method for repairing vertical thin lines of the display panel of the present invention includes:
  • n welding points 3 are formed at equal intervals, and the n welding points 3 divide the fan-out line 1 into n+1 line segments.
  • the first wire 11 and the second wire 12 are Each welding point 3 is connected by the welding point 3, where n is a natural number greater than or equal to 4.
  • the impedance of the fan-out line 1 after welding will be greatly reduced compared to the impedance of the fan-out line 1 after the single-layer wire is broken and there is a gap 19, thereby solving the problem of the first wire 11 or the first wire 11 or When one of the second wires 12 is disconnected, the loss of the signal transmitted through the fan-out line 1 is relatively large, and a thin line appears on the display screen, which affects the display effect.
  • the first wire 11 or the second wire 12 is disconnected and the impedance is doubled, and the impedance difference rate is 100%.
  • the signal loss transmitted by the fan-out line 1 is relatively large, causing the display screen to appear vertical thin lines, making the display panel The quality is degraded and scrapped.
  • the present invention forms 4 or more welding points 3 on the fan-out line 1 where the single-layer film is broken.
  • the impedance difference rate will be further reduced to less than 20%.
  • the present invention preferably forms four welding points 3 on the fan-out line 1.
  • the welding point 3 is formed by a laser welding method.
  • the step of forming the welding point 3 by using a laser welding method includes: irradiating the fan-out line 1 with a laser, the insulating layer 15 is broken down under the laser irradiation, and the first wire 11 and the second wire 12 Melting occurs under laser irradiation to form solder joints 3 in the breakdown insulating layer 15.
  • the display panel is divided into a display area 51 and a bonding area 52 located outside the display area 51.
  • the fan-out line 1 is provided on the bonding area 52, one end of the fan-out line 1 is connected to the gate line or the data line, and the other end is connected to the pad 4.
  • first wire 11 and the second wire 12 are both metal wires.
  • first wire 11 and the second wire 12 are both aluminum wires.
  • soldering points 3 are formed at equal intervals on the fan-out line 1 adopting a double-layer wire structure, so as to conduct the fan-out lines 1 stacked and separated by the insulating layer 15
  • the impedance difference between the fan-out line 1 and the normal fan-out line is reduced from 100% before repair to 20% or less, which can be solved
  • the impedance increases, which causes vertical thin lines to appear on the display screen, which affects the display effect and reduces the technical problem of the display panel quality level, effectively improving the repair of vertical thin lines Efficiency and success rate.
  • the present invention also provides a display panel, which is manufactured by adopting the method for repairing the vertical thin lines of the display panel as described above. It can solve the technical problem that the single-layer wire in the fan-out line 1 of the double-layer wire structure is disconnected and the impedance increases, thereby causing the display screen to appear vertical thin lines, affecting the display effect and reducing the quality level of the display panel.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示面板的垂直淡线修复方法及显示面板，显示面板上设有扇出线（1），扇出线（1）采用双层导线结构，扇出线（1）包括层叠的第一导线（11）与第二导线（12），第一导线（11）与第二导线（12）之间设有对其进行绝缘间隔的绝缘层，通过在扇出线（1）上等间距形成4个或4个以上导通第一导线（11）和第二导线（12）的焊接点（3），不论扇出线（1）的单层导线在哪里断开，扇出线（1）与正常扇出线（1）的阻抗差异都由修复前的100％降低为20％或20％以下，能够解决由于双层导线结构的扇出线（1）中单层导线断开而阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题。

Description

显示面板的垂直淡线修复方法及显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种显示面板的垂直淡线修复方法。
 背景技术
随着显示技术的发展，液晶显示器（Liquid Crystal Display，LCD）等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶显示面板及背光模组（backlight module）。液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过玻璃基板通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。通常液晶显示面板由彩膜（Color Filter，CF）基板、薄膜晶体管（Thin Film Transistor，TFT）阵列基板、夹于彩膜基板与TFT阵列基板之间的液晶（Liquid Crystal，LC）及密封胶框（Sealant）组成。
在液晶显示面板中，阵列基板包括显示区和非显示区，显示区内设置有纵横交错的栅线和数据线用于控制各个像素，以实现图像的显示，非显示区设置有驱动芯片以及与其连接的扇出线。栅极驱动信号和数据信号是从液晶显示器中的控制芯片发出的，通常利用覆晶薄膜(Chip On Film，简称COF) 将栅极驱动信号和数据信号分别传输至基板上的栅线和数据线。各所述扇出线为上述显示区提供显示信号，为了减小非显示区并增大显示区，通常设计各扇出线朝向驱动芯片集中而构成扇出区域（Fan-out）。
目前，扇出线有单层和双层两种导线结构，其中，双层导线结构能够使扇出线的阻值减小，进而可以减小信号损耗，因此，阵列基板上扇出线一般采用双层导线结构而包括两条导线，两条导线并联后，一端连接至一条所述信号线，另一端连接至所述控制芯片上的一个连接端子。但是，在实际制程中，制作扇出线的两条导线时，可能会由于成膜异物等原因造成两条导线的其中之一断开，进而使得扇出线的阻抗增大，进而使得通过该扇出线传输的信号损耗较大，使得显示画面出现垂直淡线，影响显示效果。
 技术问题
本发明的目的在于提供一种显示面板的垂直淡线修复方法，能够解决由于双层导线结构的扇出线中单层导线断开而阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题。
本发明的目的还在于提供一种显示面板，能够解决由于双层导线结构的扇出线中单层导线断开而阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题。
 技术解决方案
为实现上述目的，本发明提供一种显示面板的垂直淡线修复方法，所述显示面板上设有扇出线，所述扇出线采用双层导线结构，所述扇出线包括层叠的第一导线与第二导线，所述第一导线与第二导线之间设有对其进行绝缘间隔的绝缘层, 所述第一导线和第二导线中的一个具有缺口；所述显示面板的垂直淡线修复方法包括：
在所述扇出线上形成等间距的n个焊接点，该n个焊接点将所述扇出线平均分为n+1个线段，所述第一导线与第二导线在每一焊接点位置处由焊接点导通，其中，n为大于或等于4的自然数。
在所述扇出线上形成4个焊接点。
采用激光焊接的方法形成所述焊接点。
采用激光焊接的方法形成所述焊接点的步骤包括：采用激光照射所述扇出线，所述绝缘层在激光照射下被击穿，且第一导线和第二导线在激光照射下发生熔融而在击穿的绝缘层内形成焊接点。
所述第一导线的两端分别与第二导线的两端电连接而形成所述扇出线的两端。
所述显示面板划分有显示区和位于显示区外侧的接合区，所述显示区上有多条信号线，所述接合区上设置有用于外接驱动芯片的焊盘；所述多条信号线包括多条纵横交错的栅极线和数据线。
所述扇出线设于所述接合区上，所述扇出线的一端与所述栅极线或数据线相连接，另一端与所述焊盘相连接。
所述第一导线与第二导线均为金属线。
所述第一导线与第二导线均为铝线。
本发明还提供一种显示面板，采用如上所述的显示面板的垂直淡线修复方法制得。
 有益效果
本发明的有益效果：本发明的显示面板的垂直淡线修复方法及显示面板，当显示面板的显示画面出现垂直淡线时，通过在采用双层导线结构的扇出线上等间距形成4个或4个以上的焊接点，以导通扇出线层叠且由绝缘层间隔的第一导线和第二导线，则不论扇出线的单层导线在哪里断开，该扇出线与正常扇出线的阻抗差异都由修复前的100%降低为20%或20%以下，能够解决由于双层导线结构的扇出线中单层导线断开，阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题，有效地提高垂直淡线修复的效率及成功率。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
 附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为本发明的显示面板的垂直淡线修复方法的示意图；
图2为采用双层导线结构的扇出线在正常状态下的示意图；
图3为采用双层导线结构的扇出线在发生单层膜破时的示意图；
图4为图3的扇出线经过使用本发明的垂直淡线修复方法修复后的示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明首先提供一种显示面板的垂直淡线修复方法，用于对由于双层导线结构的扇出线中单层导线断开而使得显示画面出现垂直淡线的显示面板进行修复。所述显示面板上设有扇出线1，所述扇出线1采用双层导线结构，所述扇出线1包括层叠的第一导线11与第二导线12，所述第一导线11与第二导线12之间设有对其进行绝缘间隔的绝缘层15，所述第一导线11和第二导线12中的一个具有缺口19，所述第一导线11的两端分别与第二导线12的两端电连接而形成所述扇出线1的两端。
本发明的显示面板的垂直淡线修复方法包括：
在所述扇出线1上形成等间距的n个焊接点3，该n个焊接点3将所述扇出线1平均分为n+1个线段，所述第一导线11与第二导线12在每一焊接点3位置处由焊接点3导通，其中，n为大于或等于4的自然数。焊接后的所述扇出线1的阻抗相对于扇出线1在单层导线断裂而存在缺口19后的阻抗将大大降低，进而解决了由于成膜异物等原因造成扇出线1的第一导线11或第二导线12的其中之一断开时，通过该扇出线1传输的信号损耗较大，显示画面出现淡线，影响显示效果的技术问题。
需要说明的是，本发明的显示面板的垂直淡线修复方法的设计原理在于：设第一导线11和第二导线12的线长均为L，电阻率均为ρ，面积均为S，第一导线11和第二导线12的电阻相等均为R=ρL/S，那么如图2所示，扇出线1在正常情况下的电阻值为Ro= ρL/S*1/2=0.5R，如图3所示，而当扇出线1发生单层膜破即第一导线11或第二导线12发生断裂时，扇出线1的电阻值为Rn= ρL/S=R，即扇出线1因第一导线11或第二导线12断开而阻抗增大1倍，阻抗差异率为100%，进而此时该扇出线1传输的信号损耗较大，使得显示画面出现垂直淡线，使得显示面板品质降等而报废，如图4所示，本发明通过在发生单层膜破的扇出线1上形成4个或4个以上的焊接点3，假如在扇出线1设置为4个焊接点3，此时，无论扇出线1的第一导线11或第二导线12在哪里断开，扇出线1的电阻值此时均为Rs= ρL/S*1/5+ρL/S*4/5*1/2=0.6R，阻抗差异率降低为20%，从而可有效改善显示画面的垂直淡线问题，避免显示面板品质降等而报废，显然假使在扇出线1上形成4个以上的焊接点3时，阻抗差异率会进一步降低至20%以下，但从修复效果及修复效率上综合考虑，本发明优选在扇出线1上形成4个焊接点3。
具体地，采用激光焊接的方法形成所述焊接点3。
进一步地，采用激光焊接的方法形成所述焊接点3的步骤包括：采用激光照射所述扇出线1，所述绝缘层15在激光照射下被击穿，且第一导线11和第二导线12在激光照射下发生熔融而在击穿的绝缘层15内形成焊接点3。
具体地，所述显示面板划分有显示区51和位于显示区51外侧的接合区52，所述显示区51上有多条信号线2，所述接合区52上设置有用于外接驱动芯片的焊盘4；所述多条信号线2包括多条纵横交错的栅极线和数据线。
具体地，所述扇出线1设于所述接合区52上，所述扇出线1的一端与所述栅极线或数据线相连接，另一端与所述焊盘4相连接。
具体地，所述第一导线11与第二导线12均为金属线。
进一步地，所述第一导线11与第二导线12均为铝线。
本发明的垂直淡线修复方法及显示面板，通过在采用双层导线结构的扇出线1上等间距形成4个以上的焊接点3，以导通扇出线1层叠且由绝缘层15间隔的第一导线11和第二导线12，则不论扇出线1的单层导线在哪里断开，该扇出线1与正常扇出线的阻抗差异都由修复前的100%降低为20%及以下，能够解决由于双层导线结构的扇出线1中单层导线断开，阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题，有效地提高垂直淡线修复的效率及成功率。
本发明还提供一种显示面板，采用如上所述的显示面板的垂直淡线修复方法制得。能够解决由于双层导线结构的扇出线1中单层导线断开而阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题。
本发明的显示面板的垂直淡线修复方法及显示面板，当显示面板的显示画面出现垂直淡线时，通过在采用双层导线结构的扇出线上等间距形成4个或4个以上的焊接点，以导通扇出线层叠且由绝缘层间隔的第一导线和第二导线，则不论扇出线的单层导线在哪里断开，该扇出线与正常扇出线的阻抗差异都由修复前的100%降低为20%及以下，能够解决由于双层导线结构的扇出线中单层导线断开，阻抗增大，进而使得显示画面出现垂直淡线，影响显示效果而降低显示面板品质等级的技术问题，有效地提高垂直淡线修复的效率及成功率。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (18)

  1. 一种显示面板的垂直淡线修复方法，所述显示面板上设有扇出线，所述扇出线采用双层导线结构，所述扇出线包括层叠的第一导线与第二导线，所述第一导线与第二导线之间设有对其进行绝缘间隔的绝缘层, 所述第一导线和第二导线中的一个具有缺口；所述显示面板的垂直淡线修复方法包括：
    在所述扇出线上形成等间距的n个焊接点，该n个焊接点将所述扇出线平均分为n+1个线段，所述第一导线与第二导线在每一焊接点位置处由焊接点导通，其中，n为大于或等于4的自然数。
  2. 如权利要求1所述的显示面板的垂直淡线修复方法，其中，在所述扇出线上形成4个焊接点。
  3. 如权利要求1所述的显示面板的垂直淡线修复方法，其中，采用激光焊接的方法形成所述焊接点。
  4. 如权利要求3所述的显示面板的垂直淡线修复方法，其中，采用激光焊接的方法形成所述焊接点的步骤包括：采用激光照射所述扇出线，所述绝缘层在激光照射下被击穿，且第一导线和第二导线在激光照射下发生熔融而在击穿的绝缘层内形成焊接点。
  5. 如权利要求1所述的显示面板的垂直淡线修复方法，其中，所述第一导线的两端分别与第二导线的两端电连接而形成所述扇出线的两端。
  6. 如权利要求5所述的显示面板的垂直淡线修复方法，其中，所述显示面板划分有显示区和位于显示区外侧的接合区，所述显示区上有多条信号线，所述接合区上设置有用于外接驱动芯片的焊盘；所述多条信号线包括多条纵横交错的栅极线和数据线。
  7. 如权利要求6所述的显示面板的垂直淡线修复方法，其中，所述扇出线设于所述接合区上，所述扇出线的一端与所述栅极线或数据线相连接，另一端与所述焊盘相连接。
  8. 如权利要求1所述的显示面板的垂直淡线修复方法，其中，所述第一导线与第二导线均为金属线。
  9. 如权利要求8所述的显示面板的垂直淡线修复方法，其中，所述第一导线与第二导线均为铝线。
  10. 一种显示面板，采用一种显示面板的垂直淡线修复方法制得；
    所述显示面板上设有扇出线，所述扇出线采用双层导线结构，所述扇出线包括层叠的第一导线与第二导线，所述第一导线与第二导线之间设有对其进行绝缘间隔的绝缘层, 所述第一导线和第二导线中的一个具有缺口；所述显示面板的垂直淡线修复方法包括：
    在所述扇出线上形成等间距的n个焊接点，该n个焊接点将所述扇出线平均分为n+1个线段，所述第一导线与第二导线在每一焊接点位置处由焊接点导通，其中，n为大于或等于4的自然数。
  11. 如权利要求10所述的显示面板，其中，在所述扇出线上形成4个焊接点。
  12. 如权利要求10所述的显示面板，其中，采用激光焊接的方法形成所述焊接点。
  13. 如权利要求12所述的显示面板，其中，采用激光焊接的方法形成所述焊接点的步骤包括：采用激光照射所述扇出线，所述绝缘层在激光照射下被击穿，且第一导线和第二导线在激光照射下发生熔融而在击穿的绝缘层内形成焊接点。
  14. 如权利要求10所述的显示面板，其中，所述第一导线的两端分别与第二导线的两端电连接而形成所述扇出线的两端。
  15. 如权利要求14所述的显示面板，划分有显示区和位于显示区外侧的接合区，所述显示区上有多条信号线，所述接合区上设置有用于外接驱动芯片的焊盘；所述多条信号线包括多条纵横交错的栅极线和数据线。
  16. 如权利要求15所述的显示面板，其中，所述扇出线设于所述接合区上，所述扇出线的一端与所述栅极线或数据线相连接，另一端与所述焊盘相连接。
  17. 如权利要求10所述的显示面板，其中，所述第一导线与第二导线均为金属线。
  18. 如权利要求17所述的显示面板，其中，所述第一导线与第二导线均为铝线。
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