WO2021031524A1 - 折叠oled显示面板 - Google Patents

折叠oled显示面板 Download PDF

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Publication number
WO2021031524A1
WO2021031524A1 PCT/CN2020/071724 CN2020071724W WO2021031524A1 WO 2021031524 A1 WO2021031524 A1 WO 2021031524A1 CN 2020071724 W CN2020071724 W CN 2020071724W WO 2021031524 A1 WO2021031524 A1 WO 2021031524A1
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WIPO (PCT)
Prior art keywords
metal layer
signal line
display panel
oled display
sub
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Application number
PCT/CN2020/071724
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English (en)
French (fr)
Inventor
郑园
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/640,887 priority Critical patent/US11114003B2/en
Publication of WO2021031524A1 publication Critical patent/WO2021031524A1/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
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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]
    • G09G3/3266—Details of drivers for scan electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • 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
    • G09G2300/0404—Matrix technologies
    • G09G2300/0408—Integration of the drivers onto the display substrate
    • 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
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • This application relates to the field of display driving technology, and in particular to a folding OLED display panel.
  • AMOLED (active matrix organic light-emitting diode) panels are self-luminous, unlike TFT-LCDs (thin film transistor liquid crystal displays) that require backlighting, wide viewing angles, high color saturation, especially low driving voltage and low power consumption, plus Quick response, light weight, thin thickness, simple structure, low cost, etc., are regarded as one of the most promising products.
  • the pixel drive of AMOLED display drive technology is of current type and requires GOA (gate on array, the array substrate is driven by nature) to supply scanning signals.
  • GOA gate on array, the array substrate is driven by nature
  • the signal lines located in the folded area are affected by the bending stress, they are prone to breakage, which causes the signal to be unable to transmit normally, and further causes display abnormalities in the folded OLED display panel.
  • the signal line located in the folding area is easily broken due to the bending stress, which causes the signal to be unable to transmit normally, and further causes abnormal display of the folded OLED display panel. .
  • an embodiment of the present application provides a folding OLED display panel, including a display area having a folding area and a non-folding area, and the display area further includes multiple rows of pixel units, multiple signal lines, and multi-level GOA unit circuits
  • the GOA unit circuit of each level is electrically connected to the pixel unit of the corresponding row through the signal line, and the GOA unit circuit of each level is used to drive the pixel unit of the corresponding row;
  • the signal line further includes a first part of the signal line that overlaps the folding area, the first sub-signal line is configured as a wavy line or the surface of the first sub-signal line is provided with a through hole; the signal line is also It includes a second sub-signal line overlapping with the non-folding area, and the second sub-signal line is a straight line.
  • the through holes on the surface of the first sub-signal line are arranged in a single row, and the through-holes are distributed and arranged along the bending path of the first sub-signal line.
  • the through holes on the surface of the first sub-signal line are arranged in double rows, and the through-holes are arranged distributed along the bending path of the first sub-signal line.
  • the shape of the through holes are all round or oval.
  • the signal lines include GOA signal lines, pixel unit signal lines, and power signal lines.
  • the input signal of the GOA unit circuit of the Nth stage is provided by the output signal of the GOA unit circuit of the N-1 stage, and the output signal of the GOA unit circuit of the Nth stage is provided The switching signal of the pixel unit in the Nth row and the input signal of the GOA unit circuit of the N+1th stage.
  • a buffer layer, an active layer, a first gate insulating layer, a first gate metal layer, and a second gate are arranged on the flexible substrate in the folded area from bottom to top.
  • the two ends of the active layer are provided with first via holes, and the first gate A second via hole is opened on the electrode metal layer, a third via hole is opened on the second gate metal layer, and a fourth via hole is opened on the source and drain metal layer.
  • the source/drain metal layer is electrically connected to the active layer via the first via hole, and the source/drain metal layer is electrically connected to the active layer via the second via hole.
  • the first gate metal layer is electrically connected, the source and drain metal layers are electrically connected to the second gate metal layer through the third via hole, and the anode metal layer is electrically connected through the fourth via hole It is electrically connected to the source and drain metal layer.
  • the material of the first sub-signal line is the same as the material of the source-drain metal line.
  • embodiments of the present application also provide a folding OLED display panel, including a display area with a folding area and a non-folding area, and the display area also includes multiple rows of pixel units, multiple signal lines, and multi-level GOA units Circuit, the GOA unit circuit of each stage is electrically connected to the pixel unit of the corresponding row through the signal line, and the GOA unit circuit of each stage is used to drive the pixel unit of the corresponding row;
  • the signal line further includes a first part of the signal line that overlaps the folding area, the first sub-signal line is configured as a wavy line or the surface of the first sub-signal line is provided with a through hole.
  • the through holes on the surface of the first sub-signal line are arranged in a single row, and the through-holes are distributed and arranged along the bending path of the first sub-signal line.
  • the through holes on the surface of the first sub-signal line are arranged in double rows, and the through-holes are distributed and arranged along the bending path of the first sub-signal line
  • the shape of the through holes are all round or oval.
  • the signal lines include GOA signal lines, pixel unit signal lines, and power signal lines.
  • the input signal of the GOA unit circuit of the Nth stage is provided by the output signal of the GOA unit circuit of the N-1 stage, and the output signal of the GOA unit circuit of the Nth stage is provided The switching signal of the pixel unit in the Nth row and the input signal of the GOA unit circuit of the N+1th stage.
  • a buffer layer, an active layer, a first gate insulating layer, a first gate metal layer, and a second gate are arranged on the flexible substrate in the folded area from bottom to top.
  • the two ends of the active layer are provided with first via holes, and the first gate A second via hole is opened on the electrode metal layer, a third via hole is opened on the second gate metal layer, and a fourth via hole is opened on the source and drain metal layer.
  • the source/drain metal layer is electrically connected to the active layer via the first via hole, and the source/drain metal layer is electrically connected to the active layer via the second via hole.
  • the first gate metal layer is electrically connected, the source and drain metal layers are electrically connected to the second gate metal layer through the third via hole, and the anode metal layer is electrically connected through the fourth via hole It is electrically connected to the source and drain metal layer.
  • the material of the first sub-signal line is the same as the material of the source-drain metal line.
  • part of the signal lines in the folding area are set as wavy lines or provided with through holes, which improves the bending resistance of the signal lines in the folding area and further reduces There is a risk of cracks in the signal line after multiple bends, resulting in poor display.
  • FIG. 1 is a schematic diagram of the structure of a folded OLED display panel of this application.
  • FIG. 2 is an enlarged schematic diagram of Embodiment 1 of the folded OLED display panel A of FIG. 1.
  • FIG. 3 is a schematic diagram of the second embodiment of the signal line in the folding area of the folded OLED display panel of the present application.
  • FIG. 4A is a schematic circuit diagram of the pixel 7T1C of the folded OLED display panel of the present application.
  • FIG. 4B is a plan design diagram of the pixel 7T1C circuit of the folded OLED display panel of this application.
  • FIG. 5 is a schematic diagram of the pixel film layer structure of the folded OLED display panel of the present application in the folding area.
  • This application is aimed at the technology of the existing folding OLED display panel in the folding process, because the signal line located in the folding area is affected by the bending stress, it is easy to break, resulting in the signal cannot be transmitted normally, and further causing the folding OLED display panel to produce abnormal display technology Problem, this embodiment can solve the defect.
  • the folded OLED display panel includes a display area 10 having a folded area 11 and a non-folded area 12.
  • the display area also includes multiple rows of pixel units, multiple signal lines 15 and a multi-level GOA unit circuit 13, each The GOA unit circuit 13 of each stage is electrically connected to the pixel unit of the corresponding row through the signal line 15.
  • the GOA unit circuit 13 of each stage is used to drive the pixel unit of the corresponding row.
  • the pixel unit is located in the effective display area 14 in the display area 10.
  • FIG. 2 is an enlarged schematic diagram of Embodiment 1 of the folded OLED display panel A of FIG. 1.
  • the GOA unit circuit 13 of each stage is connected to the signal line 15 through a scan data line.
  • the signal line 15 includes a GOA signal line, a pixel unit signal line, and a power signal line.
  • the GOA signal line includes a first clock signal line (CK1), a second clock signal line (CK2), a VGH signal line, and a VGL signal line for the GOA unit circuit 13 to work normally.
  • the input signal (IN) 131 in the GOA unit circuit 13 of the Nth stage is provided by the output signal (OUT) of the GOA unit circuit of the N-1 stage, and the output signal ( OUT) 132 provides the switching signal of the pixel unit in the Nth row and the input signal of the GOA unit circuit of the N+1th stage.
  • the signal line 15 further includes a first sub-signal line 151 that overlaps the folding area 11, and the first sub-signal line 151 is configured as a wavy line or a surface of the first sub-signal line 151 There are through holes 1511.
  • the through holes 151 on the surface of the first sub-signal line 151 are arranged in double rows, and the through-holes are arranged in a distributed arrangement along the bending path of the first sub-signal line 151.
  • the shape of the through hole 151 is circular or oval.
  • FIG 3 is a schematic diagram of the second embodiment of the signal line in the folding area of the folded OLED display panel of this application.
  • the through holes 31 on the surface of the signal line 30 in the folding area are arranged in a single row, and the through holes 31 are arranged in a distributed arrangement along the bending path of the signal line 30.
  • the shape of the through hole 31 is circular or oval.
  • this is a schematic diagram of the GOA circuit of the folding OLED display panel 7T1C of this application.
  • the GOA circuit is composed of 7 thin film transistors and a capacitor, which uses clock signal design to generate multi-pulse and arbitrary waveform scanning signals.
  • the layout design of the pixel 7T1C circuit of the folded OLED display panel of this application As shown in FIG. 4B, the layout design of the pixel 7T1C circuit of the folded OLED display panel of this application.
  • the 4 first scanning signal lines (GE1) arranged in the horizontal direction respectively correspond to the N-1th scanning circuit signal (Sn-1) and the Nth scanning circuit signal (Sn-1) in the schematic diagram from top to bottom.
  • the layer (SD) is connected to the positive power supply voltage (VDD) signal; the three SD traces identified in the vertical direction are the data signal line (Data), the power supply positive voltage signal line (VDD) and the voltage VI signal line from left to right. These 3 signals are provided directly by the driver chip.
  • the edge and the inside of the signal line (SD) arranged in the vertical direction are dug, and the purpose is to increase the signal transmission line after dug and reduce
  • the stress generated on the signal line during folding further enhances the bending resistance of the signal line and prolongs the service life of the screen.
  • this is a schematic diagram of the pixel film layer structure of the folded OLED display panel of the present application located in the folding area.
  • a buffer layer 52, an active layer 53, a first gate insulating layer 54, a first gate metal layer 55, and a second gate insulating layer 56 are arranged from bottom to top on the flexible substrate 51 in the folding area.
  • the active layer 53 has first via holes 531 at both ends of the edge, A second via 551 is formed on the first gate metal layer 55, a third via 571 is formed on the second gate metal layer 57, and a fourth via is formed on the source and drain metal layer 59. ⁇ 591.
  • the source and drain metal layer 59 is electrically connected to the active layer 53 through the first via hole 531, and the source and drain metal layer 59 is electrically connected to the active layer 53 through the second via hole 551.
  • a gate metal layer 55 is electrically connected, the source and drain metal layer 59 is electrically connected to the second gate metal layer 57 through the third via 571, and the anode metal layer 511 is electrically connected through the first
  • the four vias 591 are electrically connected to the source and drain metal layer 59.
  • the material of the first sub-signal line is the same as the material of the source-drain metal line 59.
  • the beneficial effects of this application are: in the folding OLED display panel provided by this application, part of the signal lines located in the folding area are set as wavy lines or provided with through holes, which improves the bending resistance of the signal lines in the folding area and further reduces There is a risk of cracks in the signal line after multiple bends, resulting in poor display.

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Abstract

一种折叠OLED显示面板，包括具有折叠区域的显示区域，所述显示区域内还包括多行像素单元、多条信号线以及多级GOA单元电路，每一级的所述GOA单元电路通过所述信号线电性连接于对应行的所述像素单元；所述信号线还包括与所述折叠区域交叠的第一子信号线，所述第一子信号线设置为波形线或所述第一子信号线的表面设置有通孔。

Description

折叠OLED显示面板 技术领域
本申请涉及显示驱动技术领域，尤其涉及一种折叠OLED显示面板。
 背景技术
AMOLED（有源矩阵有机发光二极体）面板是自发光，不像TFT -LCD(薄膜晶体管液晶显示器)需要背光，视角广，色饱和度高，尤其其驱动电压低且功耗低，加上反应快、重量轻、厚度薄，构造简单，成本低等，被视为最具前途的产品之一。AMOLED显示驱动技术的像素驱动属于电流型，需要GOA（gate on array，阵列基板性驱动）供给扫描信号。目前，折叠OLED显示面板由于具有可玩着、耐冲击、便于穿戴等特点，成为显示行业的研究热点。然而，折叠OLED显示面板在折叠过程中，由于位于折叠区域的信号线受到弯折应力的影响，容易发生断裂，导致信号无法正常传输，进一步使折叠OLED显示面板产生显示异常。
综上所述，现有的折叠OLED显示面板在折叠过程中，由于位于折叠区域的信号线受到弯折应力的影响，容易发生断裂，导致信号无法正常传输，进一步使折叠OLED显示面板产生显示异常。
因而现有技术还有待改进和提高。
 技术问题
现有的折叠OLED显示面板在折叠过程中，由于位于折叠区域的信号线受到弯折应力的影响，容易发生断裂，导致信号无法正常传输，进一步使折叠OLED显示面板产生显示异常。
 技术解决方案
第一方面，本申请实施例提供一种折叠OLED显示面板，包括具有折叠区域和非折叠区域的显示区域，所述显示区域内还包括多行像素单元、多条信号线以及多级GOA单元电路，每一级的所述GOA单元电路通过所述信号线电性连接于对应行的所述像素单元，每一级的所述GOA单元电路用于驱动对应行的所述像素单元；
所述信号线还包括与所述折叠区域交叠的第一部分信号线，所述第一子信号线设置为波形线或所述第一子信号线的表面设置有通孔；所述信号线还包括与所述非折叠区域交叠的第二子信号线，所述第二子信号线为直线。
在所述的折叠OLED显示面板中，所述第一子信号线表面的所述通孔为单排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
在所述的折叠OLED显示面板中，所述第一子信号线表面的所述通孔为双排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
在所述的折叠OLED显示面板中，所述通孔的形状均为圆形或椭圆形。在本申请实施例所提供的折叠OLED显示面板中，所述信号线包括GOA信号线、像素单元信号线以及电源信号线。
在所述的折叠OLED显示面板中，第N级所述GOA单元电路中的输入信号由第N-1级所述GOA单元电路的输出信号提供，第N级所述GOA单元电路的输出信号提供第N行所述像素单元的开关信号以及第N+1级所述GOA单元电路的输入信号。
在所述的折叠OLED显示面板中，在所述折叠区域的柔性衬底上由下至上设置有缓冲层、有源层、第一栅极绝缘层、第一栅极金属层、第二栅极绝缘层、第二栅极金属层、层间绝缘层、源漏极金属层、钝化层以及阳极金属层，所述有源层的边缘两端开设有第一过孔，所述第一栅极金属层上开设有第二过孔，所述第二栅极金属层上开设有第三过孔，所述源漏极金属层上开设有第四过孔。
在所述的折叠OLED显示面板中，所述源漏极金属层经由所述第一过孔与所述有源层电性连接，所述源漏极金属层经由所述第二过孔与所述第一栅极金属层电性连接，所述源漏极金属层经由所述第三过孔与所述第二栅极金属层电性连接，所述阳极金属层经由所述第四过孔与所述源漏极金属层电性连接。
在所述的折叠OLED显示面板中，所述第一子信号线的材质与所述源漏极金属线的材质相同。
第二方面，本申请实施例还提供一种折叠OLED显示面板，包括具有折叠区域和非折叠区域的显示区域，所述显示区域内还包括多行像素单元、多条信号线以及多级GOA单元电路，每一级的所述GOA单元电路通过所述信号线电性连接于对应行的所述像素单元，每一级的所述GOA单元电路用于驱动对应行的所述像素单元；
所述信号线还包括与所述折叠区域交叠的第一部分信号线，所述第一子信号线设置为波形线或所述第一子信号线的表面设置有通孔。
在所述的折叠OLED显示面板中，所述第一子信号线表面的所述通孔为单排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
在所述的折叠OLED显示面板中，所述第一子信号线表面的所述通孔为双排设置，所述通孔沿所述第一子信号线的弯折路径分布排列
在所述的折叠OLED显示面板中，所述通孔的形状均为圆形或椭圆形。在本申请实施例所提供的折叠OLED显示面板中，所述信号线包括GOA信号线、像素单元信号线以及电源信号线。
在所述的折叠OLED显示面板中，第N级所述GOA单元电路中的输入信号由第N-1级所述GOA单元电路的输出信号提供，第N级所述GOA单元电路的输出信号提供第N行所述像素单元的开关信号以及第N+1级所述GOA单元电路的输入信号。
在所述的折叠OLED显示面板中，在所述折叠区域的柔性衬底上由下至上设置有缓冲层、有源层、第一栅极绝缘层、第一栅极金属层、第二栅极绝缘层、第二栅极金属层、层间绝缘层、源漏极金属层、钝化层以及阳极金属层，所述有源层的边缘两端开设有第一过孔，所述第一栅极金属层上开设有第二过孔，所述第二栅极金属层上开设有第三过孔，所述源漏极金属层上开设有第四过孔。
在所述的折叠OLED显示面板中，所述源漏极金属层经由所述第一过孔与所述有源层电性连接，所述源漏极金属层经由所述第二过孔与所述第一栅极金属层电性连接，所述源漏极金属层经由所述第三过孔与所述第二栅极金属层电性连接，所述阳极金属层经由所述第四过孔与所述源漏极金属层电性连接。
在所述的折叠OLED显示面板中，所述第一子信号线的材质与所述源漏极金属线的材质相同。
 有益效果
相较于现有技术，本申请所提供的折叠OLED显示面板，将位于折叠区域的部分信号线设置为波形线或开设有通孔，提高了折叠区域信号线的抗弯折性能，进一步降低了信号线在多次弯折后出现裂纹而造成显示不良的风险。
 附图说明
图1为本申请折叠OLED显示面板的结构示意图。
图2为图1所述折叠OLED显示面板A处的实施例一放大示意图。
图3为本申请折叠OLED显示面板在折叠区域中信号线的实施例二示意图。
图4A为本申请折叠OLED显示面板的像素7T1C电路原理图。
图4B为本申请折叠OLED显示面板的像素7T1C电路平面设计图。
图5为本申请折叠OLED显示面板位于折叠区域的像素膜层结构示意图。
 本发明的实施方式
本申请提供一种实体键盘输入系统、键盘输入方法及存储介质，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请针对现有的折叠OLED显示面板在折叠过程中，由于位于折叠区域的信号线受到弯折应力的影响，容易发生断裂，导致信号无法正常传输，进一步使折叠OLED显示面板产生显示异常的技术问题，本实施例能够解决该缺陷。
如图1所示，为本申请折叠OLED显示面板的结构示意图。其中，所述折叠OLED显示面板包括具有折叠区域11和非折叠区域12的显示区域10，所述显示区域内还包括多行像素单元、多条信号线15以及多级GOA单元电路13，每一级的所述GOA单元电路13通过所述信号线15电性连接于对应行的所述像素单元，每一级的所述GOA单元电路13用于驱动对应行的所述像素单元，多行所述像素单元位于所述显示区域10中的有效显示区域14内。
图2为图1所述折叠OLED显示面板A处的实施例一放大示意图。其中，每一级的所述GOA单元电路13通过扫描数据线与所述信号线15相连接，所述信号线15包括GOA信号线、像素单元信号线以及电源信号线。所述GOA信号线包括供所述GOA单元电路13正常工作的第一时钟信号线（CK1）、第二时钟信号线（CK2）、VGH信号线以及VGL信号线。
具体的第N级所述GOA单元电路13中的输入信号（IN）131由第N-1级所述GOA单元电路的输出信号(OUT)提供，第N级所述GOA单元电路的输出信号(OUT)132提供第N行所述像素单元的开关信号以及第N+1级所述GOA单元电路的输入信号。
具体的，所述信号线15还包括与所述折叠区域11交叠的第一子信号线151，所述第一子信号线151设置为波形线或所述第一子信号线151的表面设置有通孔1511。
优选的，所述第一子信号线151表面的所述通孔151为双排设置，所述通孔沿所述第一子信号线151的弯折路径分布排列。
优选的，所述通孔151的形状均为圆形或椭圆形。
图3为本申请折叠OLED显示面板折叠区域中信号线的实施例二示意图。其中，位于所述折叠区域的信号线30表面的通孔31为单排设置，所述通孔31沿所述信号线30的弯折路径分布排列。优选的，所述通孔31的形状均为圆形或椭圆形。
如图4A所示，为本申请折叠OLED显示面板7T1C的GOA电路原理图。其中，GOA电路由7个薄膜晶体管和一个电容组成，利用时钟信号设计产生多脉冲以及任意波形的扫描信号。
如图4B所示，为本申请折叠OLED显示面板的像素7T1C电路平面设计图。其中，沿着水平方向排列的4根第一扫描信号线（GE1）从上往下分别对应原理图中的第N-1级扫描电路信号（Sn-1）、第N级扫描电路信号（Sn）、TFT开关控制电路信号 (EM)以及第N+1级扫描电路信号（Sn+1），这些信号线均是由GOA电路提供；水平方向标识的有源层（Poly）走线均通过过孔（CNT）连接到源漏极金属层（SD）与VI信号相连；水平方向标识的第二扫描信号线（GE2）与电容的一个极板相连，同时通过打孔到所述源漏极金属层（SD）与电源正电压（VDD）信号相连；垂直方向标识的3根SD走线从左往右依次为数据信号线（Data）、电源正电压信号线（VDD）及电压VI信号线，这3个信号直接由驱动芯片提供。
具体的，为了防止像素电路中位于折叠区域的信号线发生断裂，将垂直方向设置的所述信号线（SD）的边缘及内部做挖孔处理，目的在于挖孔后增加信号传输线路，减小折叠时在所述信号线上产生的应力，进一步加强信号线的抗弯折性能，延长屏幕使用寿命。
如图5所示，为本申请折叠OLED显示面板位于折叠区域的像素膜层结构示意图。其中，在所述折叠区域的柔性衬底51上由下至上设置有缓冲层52、有源层53、第一栅极绝缘层54、第一栅极金属层55、第二栅极绝缘层56、第二栅极金属层57、层间绝缘层58、源漏极金属层59、钝化层510以及阳极金属层511，所述有源层53的边缘两端开设有第一过孔531，所述第一栅极金属层55上开设有第二过孔551，所述第二栅极金属层57上开设有第三过孔571，所述源漏极金属层59上开设有第四过孔591。
具体的，所述源漏极金属层59经由所述第一过孔531与所述有源层53电性连接，所述源漏极金属层59经由所述第二过孔551与所述第一栅极金属层55电性连接，所述源漏极金属层59经由所述第三过孔571与所述第二栅极金属层57电性连接，所述阳极金属层511经由所述第四过孔591与所述源漏极金属层59电性连接。
具体的，所述第一子信号线的材质与所述源漏极金属线59的材质相同。
本申请的有益效果为：本申请所提供的折叠OLED显示面板，将位于折叠区域的部分信号线设置为波形线或开设有通孔，提高了折叠区域信号线的抗弯折性能，进一步降低了信号线在多次弯折后出现裂纹而造成显示不良的风险。
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 (20)

  1. 一种折叠OLED显示面板，其中，包括具有折叠区域和非折叠区域的显示区域，所述显示区域内还包括多行像素单元、多条信号线以及多级GOA单元电路，每一级的所述GOA单元电路通过所述信号线电性连接于对应行的所述像素单元，每一级的所述GOA单元电路用于驱动对应行的所述像素单元；
    其中，所述信号线还包括与所述折叠区域交叠的第一子信号线，所述第一子信号线设置为波形线或所述第一子信号线的表面设置有通孔；所述信号线还包括与所述非折叠区域交叠的第二子信号线，所述第二子信号线为直线。
  2. 根据权利要求1所述的折叠OLED显示面板，其中，所述第一子信号线表面的所述通孔为单排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
  3. 根据权利要求1所述的折叠OLED显示面板，其中，所述第一子信号线表面的所述通孔为双排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
  4. 根据权利要求2所述的折叠OLED显示面板，其中，所述通孔的形状均为圆形或椭圆形。
  5. 根据权利要求3所述的折叠OLED显示面板，其中，所述通孔的形状均为圆形或椭圆形。
  6. 根据权利要求1所述的折叠OLED显示面板，其中，所述信号线包括GOA信号线、像素单元信号线以及电源信号线。
  7. 根据权利要求1所述的折叠OLED显示面板，其中，第N级所述GOA单元电路中的输入信号由第N-1级所述GOA单元电路的输出信号提供，第N级所述GOA单元电路的输出信号提供第N行所述像素单元的开关信号以及第N+1级所述GOA单元电路的输入信号。
  8. 根据权利要求1所述的折叠OLED显示面板，其中，在所述折叠区域的柔性衬底上由下至上设置有缓冲层、有源层、第一栅极绝缘层、第一栅极金属层、第二栅极绝缘层、第二栅极金属层、层间绝缘层、源漏极金属层、钝化层以及阳极金属层，所述有源层的边缘两端开设有第一过孔，所述第一栅极金属层上开设有第二过孔，所述第二栅极金属层上开设有第三过孔，所述源漏极金属层上开设有第四过孔。
  9. 根据权利要求8所述的折叠OLED显示面板，其中，所述源漏极金属层经由所述第一过孔与所述有源层电性连接，所述源漏极金属层经由所述第二过孔与所述第一栅极金属层电性连接，所述源漏极金属层经由所述第三过孔与所述第二栅极金属层电性连接，所述阳极金属层经由所述第四过孔与所述源漏极金属层电性连接。
  10. 根据权利要求8所述的折叠OLED显示面板，其中，所述第一子信号线的材质与所述源漏极金属线的材质相同。
  11. 一种折叠OLED显示面板，其中，包括具有折叠区域和非折叠区域的显示区域，所述显示区域内还包括多行像素单元、多条信号线以及多级GOA单元电路，每一级的所述GOA单元电路通过所述信号线电性连接于对应行的所述像素单元，每一级的所述GOA单元电路用于驱动对应行的所述像素单元；
    其中，所述信号线还包括与所述折叠区域交叠的第一子信号线，所述第一子信号线设置为波形线或所述第一子信号线的表面设置有通孔。
  12. 根据权利要求11所述的折叠OLED显示面板，其中，所述第一子信号线表面的所述通孔为单排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
  13. 根据权利要求11所述的折叠OLED显示面板，其中，所述第一子信号线表面的所述通孔为双排设置，所述通孔沿所述第一子信号线的弯折路径分布排列。
  14. 根据权利要求12所述的折叠OLED显示面板，其中，所述通孔的形状均为圆形或椭圆形。
  15. 根据权利要求13所述的折叠OLED显示面板，其中，所述通孔的形状均为圆形或椭圆形。
  16. 根据权利要求11所述的折叠OLED显示面板，其中，所述信号线包括GOA信号线、像素单元信号线以及电源信号线。
  17. 根据权利要求11所述的折叠OLED显示面板，其中，第N级所述GOA单元电路中的输入信号由第N-1级所述GOA单元电路的输出信号提供，第N级所述GOA单元电路的输出信号提供第N行所述像素单元的开关信号以及第N+1级所述GOA单元电路的输入信号。
  18. 根据权利要求11所述的折叠OLED显示面板，其中，在所述折叠区域的柔性衬底上由下至上设置有缓冲层、有源层、第一栅极绝缘层、第一栅极金属层、第二栅极绝缘层、第二栅极金属层、层间绝缘层、源漏极金属层、钝化层以及阳极金属层，所述有源层的边缘两端开设有第一过孔，所述第一栅极金属层上开设有第二过孔，所述第二栅极金属层上开设有第三过孔，所述源漏极金属层上开设有第四过孔。
  19. 根据权利要求18所述的折叠OLED显示面板，其中，所述源漏极金属层经由所述第一过孔与所述有源层电性连接，所述源漏极金属层经由所述第二过孔与所述第一栅极金属层电性连接，所述源漏极金属层经由所述第三过孔与所述第二栅极金属层电性连接，所述阳极金属层经由所述第四过孔与所述源漏极金属层电性连接。
  20. 根据权利要求18所述的折叠OLED显示面板，其中，所述第一子信号线的材质与所述源漏极金属线的材质相同。
PCT/CN2020/071724 2019-08-22 2020-01-13 折叠oled显示面板 WO2021031524A1 (zh)

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208335702U (zh) * 2018-05-14 2019-01-04 北京京东方技术开发有限公司 显示面板及显示装置
CN110600509A (zh) * 2019-08-22 2019-12-20 武汉华星光电半导体显示技术有限公司 折叠oled显示面板
CN111129093A (zh) * 2019-12-23 2020-05-08 武汉华星光电半导体显示技术有限公司 阵列基板和显示面板
CN111128028A (zh) * 2019-12-31 2020-05-08 武汉华星光电半导体显示技术有限公司 一种可弯折显示面板、显示装置及显示设备
CN111725249B (zh) * 2020-06-03 2024-02-13 錼创显示科技股份有限公司 可挠式微型组件显示面板
CN111833745A (zh) * 2020-07-03 2020-10-27 武汉华星光电半导体显示技术有限公司 阵列基板和显示面板
CN112582454A (zh) * 2020-12-08 2021-03-30 武汉华星光电半导体显示技术有限公司 显示面板及显示装置
US11935470B2 (en) 2021-04-30 2024-03-19 Chengdu Boe Optoelectronics Technology Co., Ltd. Pixel circuit and driving method thereof, and display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002148645A (ja) * 2000-11-08 2002-05-22 Toshiba Corp 表示装置用電極基板
CN107862998A (zh) * 2017-11-09 2018-03-30 深圳市华星光电半导体显示技术有限公司 一种柔性goa显示面板及其制作方法
CN108807477A (zh) * 2018-06-07 2018-11-13 武汉华星光电半导体显示技术有限公司 Oled显示面板
CN110600509A (zh) * 2019-08-22 2019-12-20 武汉华星光电半导体显示技术有限公司 折叠oled显示面板

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102387786B1 (ko) * 2015-07-28 2022-04-15 엘지디스플레이 주식회사 백플레인 기판 및 이를 이용한 플렉서블 디스플레이
KR102643637B1 (ko) * 2016-03-02 2024-03-06 삼성디스플레이 주식회사 디스플레이 장치
CN105977400B (zh) * 2016-07-21 2018-01-26 京东方科技集团股份有限公司 一种显示面板及其制备方法、显示装置
CN108766979B (zh) * 2018-05-25 2020-09-25 武汉天马微电子有限公司 显示面板及显示装置
CN109449190B (zh) * 2018-11-14 2020-12-29 京东方科技集团股份有限公司 一种柔性显示面板及oled显示装置
CN110047381A (zh) * 2019-03-27 2019-07-23 武汉华星光电半导体显示技术有限公司 显示面板及制作方法
CN110112191B (zh) * 2019-04-29 2021-06-01 武汉华星光电半导体显示技术有限公司 一种显示面板、显示装置及其制造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002148645A (ja) * 2000-11-08 2002-05-22 Toshiba Corp 表示装置用電極基板
CN107862998A (zh) * 2017-11-09 2018-03-30 深圳市华星光电半导体显示技术有限公司 一种柔性goa显示面板及其制作方法
CN108807477A (zh) * 2018-06-07 2018-11-13 武汉华星光电半导体显示技术有限公司 Oled显示面板
CN110600509A (zh) * 2019-08-22 2019-12-20 武汉华星光电半导体显示技术有限公司 折叠oled显示面板

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