WO2020124927A1 - 柔性显示基板及有机发光二极管显示设备 - Google Patents

柔性显示基板及有机发光二极管显示设备 Download PDF

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Publication number
WO2020124927A1
WO2020124927A1 PCT/CN2019/084886 CN2019084886W WO2020124927A1 WO 2020124927 A1 WO2020124927 A1 WO 2020124927A1 CN 2019084886 W CN2019084886 W CN 2019084886W WO 2020124927 A1 WO2020124927 A1 WO 2020124927A1
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Prior art keywords
hole
metal trace
flexible display
substrate
metal
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PCT/CN2019/084886
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English (en)
French (fr)
Inventor
周思思
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/500,697 priority Critical patent/US20210328159A1/en
Publication of WO2020124927A1 publication Critical patent/WO2020124927A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, 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
    • H10K59/131—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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • 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

  • the present invention relates to a flexible display substrate, and in particular to a flexible display substrate for organic light emitting diode (OLED) display devices.
  • OLED organic light emitting diode
  • the organic light emitting diode display panel has the characteristics of high contrast, wide color gamut, low power consumption, and foldability.
  • the lower bezel of the flexible substrate needs to be bent to the rear of the flexible display substrate.
  • the metal traces used for data signal transmission are prone to cracks or even breaks, resulting in the signal line being unable to transmit.
  • the invention provides a flexible display substrate, including a flexible substrate and a wiring, wherein the flexible substrate includes a bending area, and the wiring is disposed in the bending area.
  • the bending area includes at least one through hole
  • the trace includes a first metal trace and a second metal trace. The first metal trace and the second metal trace are electrically connected to each other through at least one through hole at the edge of the bending area .
  • At least one through hole includes a first through hole and a second through hole, and the first metal trace and the second metal trace pass through the first through hole and the second via at the edge of the bending area
  • the holes are electrically connected to each other.
  • the diameter of the at least one through hole is between 2.5 microns and 5 microns.
  • the traces further include third metal traces or more metal traces.
  • the material of the traces includes molybdenum, aluminum, titanium or alloys thereof.
  • the traces include scan lines, data signal lines, clock signal lines, or touch signal lines.
  • the first metal trace and the second metal trace are configured independently of each other.
  • the flexible substrate includes an array substrate, a counter substrate, or a touch substrate.
  • an organic light emitting diode is further provided on the flexible substrate.
  • the first metal traces and the second metal traces are independent and cross-arranged.
  • a flexible display substrate including a flexible substrate and a wiring, wherein the flexible substrate includes a bending area, and the wiring is disposed in the bending area.
  • the bending region includes at least one through hole, and the diameter of the at least one through hole is between 2.5 ⁇ m and 5 ⁇ m.
  • the trace includes a first metal trace and a second metal trace, and the first metal trace and the second metal trace
  • the wires are electrically connected to each other at the edge of the bending area through at least one through hole.
  • the at least one through hole includes a first through hole and a second through hole. The first metal trace and the second metal trace pass through the edge of the bending area The first through hole and the second through hole are electrically connected to each other.
  • the traces further include third metal traces or more metal traces.
  • the material of the traces includes molybdenum, aluminum, titanium or alloys thereof.
  • the traces include scan lines, data signal lines, clock signal lines, or touch signal lines.
  • the first metal trace and the second metal trace are configured independently of each other.
  • the flexible substrate includes an array substrate, a counter substrate, or a touch substrate.
  • an organic light emitting diode is further provided on the flexible substrate.
  • the first metal traces and the second metal traces are independent and cross-arranged.
  • a flexible display substrate including a flexible substrate and a wiring, wherein the flexible substrate includes a bending area, and the wiring is disposed in the bending area.
  • the bending region includes at least one through hole, and the diameter of the at least one through hole is between 2.5 ⁇ m and 5 ⁇ m.
  • the trace includes a first metal trace and a second metal trace, and the first metal trace and the second metal trace. The wires are electrically connected to each other through at least one through hole at the edge of the bending region, and the first metal trace and the second metal trace are independent and cross-configured with each other.
  • the traces further include third metal traces or more metal traces.
  • the invention provides a flexible display substrate which can improve the arrangement of metal traces in the bending area of the flexible substrate to solve the problem of cracks or even breakage of the traces.
  • 1 is a schematic structural diagram of a flexible display substrate bent
  • FIG. 2 is a partially enlarged schematic view of a bending area of a flexible substrate according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of the configuration of traces and through holes according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the bending area AA' of the flexible substrate in FIG. 3;
  • FIG. 5 is a schematic diagram of the configuration of traces and through holes according to another embodiment of the invention.
  • FIG. 1 is a schematic structural diagram of a flexible display substrate that is bent.
  • the flexible display substrate includes a flexible substrate 10, a bending region 20, a polarizer module 30, a first support layer 40, a second support layer 41, a support member 50, and a foam layer 60.
  • the first support layer 40 and the second support layer 41 are provided on both sides of the inner side of the flexible substrate 10, wherein the support member 50 and the foam layer 60 are provided above the inner side of the first support layer 40.
  • the support member 50 supports the foam layer 60, and a second support layer 41 is provided above the foam layer 60, and the foam layer 60 has a function of bonding the second support layer 41.
  • the first support layer 40 and the second support layer 41 support the flexible substrate 10, and the polarizer module 30 is provided above the second support layer 41 and the bent flexible substrate 10.
  • the wiring is disposed in the bending region 20 of the flexible substrate 10.
  • the flexible substrate 10 may have an organic light emitting diode (OLED) (not shown).
  • the present invention provides preferred embodiments to solve the problems in the conventional technology.
  • the preferred embodiments are described in detail below, together with the attached drawings, for detailed description.
  • a specific embodiment of the present invention provides a flexible display substrate, which includes a flexible substrate having a bending area and a wiring disposed in the bending area, the wiring includes a first metal wiring and a second metal wiring, and the first metal wiring At least one through hole is electrically connected to the second metal trace at the edge of the bending region. At least one through hole is disposed at the edge of the flat area near the bending area.
  • the first metal trace is located on the top surface of the flexible display substrate, and the second metal trace is located on the bottom surface of the flexible display substrate.
  • the first metal wiring is located outside the flexible display panel, and the second metal wiring is located inside the flexible display panel.
  • the first metal trace extends in the flat area, and the second metal trace extends in the bending area.
  • the organic light emitting diode (OLED) is provided in a flat area.
  • FIG 2 is a partially enlarged schematic view of the bending region 20 of the flexible substrate 10 according to an embodiment of the present invention.
  • the trace 70 of the embodiment of the present invention is disposed on the edge 21 of the bending region of the flexible substrate 10 and electrically connected to each other through at least one through hole.
  • FIG. 3 is a schematic diagram of the configuration of traces and through holes according to an embodiment of the present invention.
  • the trace 70 includes a first metal trace 71 and a second metal trace 72.
  • the first metal trace 71 and the second metal trace are independent of each other and are arranged crosswise.
  • the first metal trace 71 and the second metal trace 72 are electrically connected to each other through the at least one through hole 80 at the edge 21 of the bending region of the flexible substrate, wherein the at least one through hole 80 includes the first through hole 81.
  • the diameter of the first through hole 81 is between 2.5 ⁇ m and 5 ⁇ m
  • the material of the traces includes molybdenum, aluminum, titanium, or alloys thereof, but it is not limited to the aforementioned metal materials.
  • the traces include scan lines, data signal lines, clock signal lines, or touch signal lines
  • the flexible substrate includes an array substrate, a counter substrate, or a touch substrate.
  • the trace 70 can also include a third metal trace or more metal traces. Those skilled in the art of the present invention can make appropriate adjustments according to actual needs.
  • FIG. 4 is a cross-sectional view of the bending area AA' of the flexible substrate in FIG. 3.
  • FIG. 4 can clearly show that the first metal trace 71 and the second metal trace 72 at the edge 21 of the bending zone are electrically connected to each other through the first through hole 81, and the first metal trace 71
  • the second metal traces 72 are arranged to cross each other independently.
  • FIG. 5 is a schematic diagram of the configuration of traces and through holes according to another embodiment of the invention. This embodiment is substantially the same as the embodiment of FIG. 3, except that at least one through hole 80 includes a second through hole 82.
  • the number of the second through holes 82 is greater than the number of the first through holes 81, but the size is smaller than the size of the first through holes 81.
  • Another embodiment of the present invention provides an organic light emitting diode (OLED) display device having the foregoing flexible display substrate. It is worth mentioning that those skilled in the art can apply the flexible display substrate of the embodiments of the present invention to various display devices according to actual conditions.
  • OLED organic light emitting diode

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种柔性显示基板及具有柔性显示基板的有机发光二极管(OLED)显示设备，柔性显示基板包括柔性基板（10）及走线（70）。柔性基板（10）包括弯折区（20），以及走线（70）设置在弯折区（20）。弯折区（20）包括至少一个通孔（80），走线（70）包括第一金属走线（71）及第二金属走线（72），第一金属走线（71）和第二金属走线（72）在弯折区（20）的边缘（21）通过至少一个通孔（82）彼此电性连接。

Description

柔性显示基板及有机发光二极管显示设备 技术领域
本发明是有关于一种柔性显示基板，特别是有关于一种用于有机发光二极管(OLED)显示设备的柔性显示基板。
 背景技术
有机发光二极管显示面板具有高对比度、广色域、低功耗及可折叠等特性。为了使有机发光二及管显示设备达到窄边框的目的，需要将柔性基板的下边框弯折至柔性显示基板的后方。在柔性基板弯折过程中，用于数据信号传输的金属走线容易出现裂纹甚至断裂，导致信号线无法传输。
 技术问题
在习知技术中，走线在柔性基板的弯折区因过度拉伸容易造成走线出现裂纹甚至断裂，导致信号线无法传输。故，有必要改善金属走线在柔性基板弯折区内的配置，以解决现有技术所存在的问题。
 技术解决方案
本发明提供一种柔性显示基板，包括柔性基板及走线，其中柔性基板包括弯折区，走线设置在弯折区内。弯折区包括至少一个通孔，走线包括第一金属走线及第二金属走线，第一金属走线和第二金属走线在弯折区的边缘通过至少一个通孔彼此电性连接。
在本发明的一实施例中，至少一个通孔包括第一通孔及第二通孔，第一金属走线和第二金属走线在弯折区的边缘通过第一通孔及第二通孔彼此电性连接。
在本发明的一实施例中，至少一个通孔的孔径介于2.5微米至5微米之间。
在本发明的一实施例中，走线还包括第三金属走线或更多金属走线。
在本发明的一实施例中，走线的材料包括钼、铝、钛或其合金。
在本发明的一实施例中，走线包括扫描线、数据信号线、时钟信号线或触控信号线。
在本发明的一实施例中，第一金属走线及第二金属走线彼此独立配置。
在本发明的一实施例中，柔性基板包括数组基板、对向基板或触控基板。
在本发明的一实施例中，进一步包括有机发光二极管(OLED)设在柔性基板上。
在本发明的一实施例中，第一金属走线及第二金属走线彼此独立且交叉配置。
本发明的另一实施例提供一种柔性显示基板，包括柔性基板及走线，其中柔性基板包括弯折区，走线设置在弯折区内。弯折区包括至少一个通孔，至少一个通孔的孔径介于2.5微米至5微米之间，走线包括第一金属走线及第二金属走线，第一金属走线和第二金属走线在弯折区的边缘通过至少一个通孔彼此电性连接，至少一个通孔包括第一通孔及第二通孔，第一金属走线和第二金属走线在弯折区的边缘通过第一通孔及第二通孔彼此电性连接。
在本发明的一实施例中，走线还包括第三金属走线或更多金属走线。
在本发明的一实施例中，走线的材料包括钼、铝、钛或其合金。
在本发明的一实施例中，走线包括扫描线、数据信号线、时钟信号线或触控信号线。
在本发明的一实施例中，第一金属走线及第二金属走线彼此独立配置。
在本发明的一实施例中，柔性基板包括数组基板、对向基板或触控基板。
在本发明的一实施例中，进一步包括有机发光二极管(OLED)设在柔性基板上。
在本发明的一实施例中，第一金属走线及第二金属走线彼此独立且交叉配置。
本发明另一实施例提供一种柔性显示基板，包括柔性基板及走线，其中柔性基板包括弯折区，走线设置在弯折区内。弯折区包括至少一个通孔，至少一个通孔的孔径介于2.5微米至5微米之间，走线包括第一金属走线及第二金属走线，第一金属走线和第二金属走线在弯折区的边缘通过至少一个通孔彼此电性连接，第一金属走线及第二金属走线彼此独立且交叉配置。
在本发明的一实施例中，走线还包括第三金属走线或更多金属走线。
 有益效果
在习知技术中走线在柔性基板的弯折区因过度拉伸容易造成走线出现裂纹甚至断裂，导致信号线无法传输。本发明提供一种柔性显示基板可改善金属走线在柔性基板弯折区内的配置，以解决走线出现裂纹甚至断裂的问题。
 附图说明
图1是弯折的柔性显示基板的结构示意图；
图2是本发明实施例柔性基板的弯折区的局部放大示意图；
图3是本发明实施例走线与通孔的配置示意图；
图4是图3中柔性基板弯折区AA’的截面图；以及
图5是本发明另一实施例走线与通孔的配置示意图。
 本发明的实施方式
图1是弯折的柔性显示基板的结构示意图。柔性显示基板包括柔性基板10、弯折区20、偏光片模块30、第一支撑层40、第二支撑层41、支撑部件50及发泡层60。在柔性基板10的内侧两边设置有第一支撑层40及第二支撑层41，其中第一支撑层40的内侧上方设置支撑部件50及发泡层60。支撑部件50支撑发泡层60，发泡层60上方设置第二支撑层41，发泡层60具有黏合第二支撑层41的功能。第一支撑层40及第二支撑层41支撑柔性基板10，在第二支撑层41及弯折的柔性基板10上方设置偏光片模块30。详言之，走线设置在柔性基板10的弯折区20内。柔性基板10上可具有有机发光二极管(OLED)(图未示)。
在习知技术中，走线在柔性基板的弯折区因过度拉伸容易造成走线出现裂纹甚至断裂，导致信号线无法传输。因此，本发明提供优选的实施例以解决习知技术中出现的问题。下文特举优选实施例，并配合所附图式，作详细说明。
本发明具体实施例提供一种柔性显示基板，包括具有弯折区的柔性基板及设置在弯折区的走线，走线包括第一金属走线及第二金属走线，第一金属走线和所述第二金属走线在弯折区的边缘通过至少一个通孔彼此电性连接。至少一个通孔系设置在平坦区靠近弯折区的边缘。在弯折前，第一金属走线位在柔性显示基板的顶面，第二金属走线位在柔性显示基板的底面。在弯折后，第一金属走线位在柔性显示面板的外侧，第二金属走线位在柔性显示面板的内侧。第一金属走线为延伸在平坦区域中，第二金属走线为延伸在弯曲区中。有机发光二极管(OLED)为设在平坦区域中。
图2是本发明实施例柔性基板10的弯折区20的局部放大示意图。本发明实施例的走线70配置在柔性基板10的弯折区边缘21，并通过至少一个通孔彼此电性连接。
图3是本发明实施例走线与通孔的配置示意图。走线70包括第一金属走线71及第二金属走线72。第一金属走线71及第二金属走线彼此独立且交叉配置。第一金属走线71及第二金属走线72在柔性基板的弯折区边缘21通过至少一个通孔80彼此电性连接，其中至少一个通孔80包括第一通孔81。具体而言，第一通孔81的孔径介于2.5微米至5微米之间，以及走线的材料包括，钼、铝、钛或其合金，但不限于上述金属材料。此外，走线包括扫描线、数据信号线、时钟信号线或触控信号线，以及柔性基板包括数组基板、对向基板或触控基板。此外，走线70还能包括第三金属走线或更多金属走线，本发明领域具有一般技艺者可视实际需要作适当调整。
图4是图3中柔性基板弯折区AA’的截面图。在本发明实施例中，图4可以清楚明了在弯折区边缘21的第一金属走线71及第二金属走线72是通过第一通孔81彼此电性连接，第一金属走线71及第二金属走线72是彼此独立交叉配置。
图5是本发明另一实施例走线与通孔的配置示意图。此一实施例和图3的实施例大致相同，不同处在于至少一个通孔80包括第二通孔82。第二通孔82的数量大于第一通孔81的数量, 然其尺寸是小于第一通孔81的尺寸。
本发明另一个实施例提供具有前述柔性显示基板的有机发光二极管(OLED)显示设备。值得一提的是，本领域具有通常技艺者可视实际情况将本发明实施例的柔性显示基板应用在各种显示设备。
虽然本发明结合其具体实施例而被描述，应该理解的是，许多替代、修改及变化对于那些本领域的技术人员将是显而易见的。因此，其意在包含落入所附权利要求书的范围内的所有替代、修改及变化。

Claims (20)

  1. 一种柔性显示基板，包括：
    柔性基板，所述柔性基板包括弯折区；以及
    设置在所述弯折区的走线；
    其中，所述弯折区包括至少一个通孔，所述走线包括第一金属走线及第二金属走线，所述第一金属走线和所述第二金属走线在所述弯折区的边缘通过所述至少一个通孔彼此电性连接。
  2. 如权利要求1所述的柔性显示基板，其中，所述至少一个通孔包括第一通孔及第二通孔，所述第一金属走线和所述第二金属走线在所述弯折区的边缘通过所述第一通孔及第二通孔彼此电性连接。
  3. 如权利要求1所述的柔性显示基板，其特征在于，所述至少一个通孔的孔径介于2.5微米至5微米之间。
  4. 如权利要求1所述的柔性显示基板，其中，所述走线还包括第三金属走线或更多金属走线。
  5. 如权利要求1所述的柔性显示基板，其中，所述走线的材料包括钼、铝、钛或其合金。
  6. 如权利要求1所述的柔性显示基板，其中，所述走线包括扫描线、数据信号线、时钟信号线或触控信号线。
  7. 如权利要求1所述的柔性显示基板，其中，所述第一金属走线及所述第二金属走线彼此独立配置。
  8. 如权利要求1所述的柔性显示基板，其中，所述柔性基板包括数组基板、对向基板或触控基板。
  9. 如权利要求1所述的柔性显示基板，其中，进一步包括有机发光二极管(OLED)设在所述柔性基板上。
  10. 如权利要求1所述的柔性显示基板，其中，所述第一金属走线及所述第二金属走线彼此独立且交叉配置。
  11. 一种柔性显示基板，包括：
    柔性基板，所述柔性基板包括弯折区；以及
    设置在所述弯折区的走线；
    其中，所述弯折区包括至少一个通孔，所述至少一个通孔的孔径介于2.5微米至5微米之间，所述走线包括第一金属走线及第二金属走线，所述第一金属走线和所述第二金属走线在所述弯折区的边缘通过所述至少一个通孔彼此电性连接，所述至少一个通孔包括第一通孔及第二通孔，所述第一金属走线和所述第二金属走线在所述弯折区的边缘通过所述第一通孔及第二通孔彼此电性连接。
  12. 如权利要求11所述的柔性显示基板，其中，所述走线还包括第三金属走线或更多金属走线。
  13. 如权利要求11所述的柔性显示基板，其中，所述走线的材料包括钼、铝、钛或其合金。
  14. 如权利要求11所述的柔性显示基板，其中，所述走线包括扫描线、数据信号线、时钟信号线或触控信号线。
  15. 如权利要求11所述的柔性显示基板，其中，所述第一金属走线及所述第二金属走线彼此独立配置。
  16. 如权利要求11所述的柔性显示基板，其中，所述柔性基板包括数组基板、对向基板或触控基板。
  17. 如权利要求11所述的柔性显示基板，其中，进一步包括有机发光二极管(OLED)设在所述柔性基板上。
  18. 如权利要求11所述的柔性显示基板，其中，所述第一金属走线及所述第二金属走线彼此独立且交叉配置。
  19. 一种柔性显示基板，包括：
    柔性基板，所述柔性基板包括弯折区；以及
    设置在所述弯折区的走线；
    其中，所述弯折区包括至少一个通孔，所述至少一个通孔的孔径介于2.5微米至5微米之间，所述走线包括第一金属走线及第二金属走线，所述第一金属走线和所述第二金属走线在所述弯折区的边缘通过所述至少一个通孔彼此电性连接，所述第一金属走线及所述第二金属走线彼此独立且交叉配置。
  20. 如权利要求19所述的柔性显示基板，其中，所述走线还包括第三金属走线或更多金属走线。
PCT/CN2019/084886 2018-12-18 2019-04-29 柔性显示基板及有机发光二极管显示设备 Ceased WO2020124927A1 (zh)

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