WO2020133640A1 - 具有应力缓解结构的显示面板及其制作方法 - Google Patents

具有应力缓解结构的显示面板及其制作方法 Download PDF

Info

Publication number
WO2020133640A1
WO2020133640A1 PCT/CN2019/075031 CN2019075031W WO2020133640A1 WO 2020133640 A1 WO2020133640 A1 WO 2020133640A1 CN 2019075031 W CN2019075031 W CN 2019075031W WO 2020133640 A1 WO2020133640 A1 WO 2020133640A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
semi
pixel definition
flat layer
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/075031
Other languages
English (en)
French (fr)
Inventor
闫博
曹君
金江江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/326,372 priority Critical patent/US11139355B2/en
Publication of WO2020133640A1 publication Critical patent/WO2020133640A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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

Definitions

  • the invention relates to the field of display technology, in particular to a display panel with a stress relief structure and a manufacturing method thereof.
  • Organic light emitting diode organic light emitting diode, OLED
  • OLED organic light emitting diode
  • the OLED display panel includes an OLED device, a drive IC (Drive IC), and metal traces connecting the two.
  • the OLED device is disposed in a display area of the panel, the driving chip is disposed in a peripheral area of the panel, and the metal trace extends from the display area to the peripheral area to connect the OLED device to the Driver chip.
  • the panel portion where the driving chip is located is usually bent to the back of the panel portion where the OLED device is located, and the bent area is the bending area of the display panel.
  • the bending area of the display panel includes a flexible substrate, an organic material filled through hole (ODH), a metal trace, a flat layer, a pixel definition layer, and a photosensitive spacer spacer) layer.
  • ODH organic material filled through hole
  • the metal traces are subjected to bending to accumulate stress, and the metal traces are easily broken during the bending process, which reduces the reliability and manufacturing yield of the display panel.
  • An object of the present invention is to provide a display panel with a stress relief structure and a manufacturing method thereof, to solve the technical problems that the metal wiring in the prior art is easily broken and the manufacturing yield of the display panel is low.
  • the present invention provides a display panel with a stress relief structure, including:
  • a substrate the substrate has a display area, a bending area and a peripheral area, the bending area is located between the display area and the peripheral area;
  • a metal trace, the metal trace is disposed on the substrate and extends from the display area to the peripheral area;
  • a flat layer the flat layer is located in the bending region and is disposed on the metal trace;
  • a pixel definition layer is located in the bending region and is disposed on the flat layer;
  • At least one of the flat layer and the pixel definition layer includes a plurality of semi-cylinders parallel to each other.
  • a driving chip is provided in the peripheral area
  • an organic light emitting diode device is provided in the display area
  • the metal trace connects the driving chip and the organic light emitting diode device.
  • the flat layer and the pixel definition layer each include a plurality of semi-cylinders parallel to each other, and the semi-cylinder constituting the flat layer and the semi-cylinder constituting the pixel definition layer have The same extension direction and staggered with each other.
  • the flat layer and the pixel definition layer each include a plurality of semi-cylinders parallel to each other, and the semi-cylinder constituting the flat layer and the semi-cylinder constituting the pixel definition layer have Different directions of extension and there is an angle between them.
  • the flat layer includes a plurality of semi-cylinders parallel to each other, and the pixel definition layer includes a continuous sheet.
  • the display panel with a stress relief structure further includes:
  • a photosensitive gap sub-layer, the photosensitive gap sub-layer is located in the bending region and is disposed on the pixel definition layer.
  • the materials of the flat layer, the pixel definition layer and the photosensitive gap sub-layer are all polyimide.
  • the substrate has a through hole filled with organic material in the bending area, and the through hole is filled with polyimide material.
  • the invention also provides a method for manufacturing a display panel with a stress relief structure, including the following steps:
  • the substrate having a display area, a bending area and a peripheral area, the bending area is located between the display area and the peripheral area;
  • the flat layer is located in the bending region
  • the pixel definition layer is located in the bending region
  • At least one of the flat layer and the pixel definition layer includes a plurality of semi-cylinders parallel to each other.
  • the flat layer and the pixel definition layer each include a plurality of semi-cylinders parallel to each other, and the semi-cylinders constituting the flat layer and the semi-cylinders constituting the pixel definition layer have the same extending direction and are staggered with each other ;
  • the flat layer and the pixel definition layer each include a plurality of semi-cylinders parallel to each other, and the semi-cylinder constituting the flat layer and the semi-cylinder constituting the pixel definition layer have different extension directions and There is an angle between; or
  • the flat layer includes a plurality of semi-cylinders parallel to each other, and the pixel definition layer includes a continuous sheet.
  • the present invention provides a display panel with a stress relief structure and a manufacturing method thereof.
  • the stress relief structure is disposed in the bending area of the display panel, and the stress relief structure is formed by forming at least one of the flat layer and the pixel definition layer in the bending area to have a plurality of semi-cylindrical parallel to each other To form.
  • the stress relief structure can release the stress on the metal traces in the bending area, thereby solving the technical problems encountered by the existing display panel.
  • FIG. 1A is a schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 1 of the present invention.
  • FIG. 1B is a perspective view of the display panel of FIG. 1A with the photosensitive gap sublayer omitted for clarity.
  • FIG. 2A is a schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 2 of the present invention.
  • FIG. 2B is a perspective view of the display panel of FIG. 2A, with the photosensitive gap sublayer omitted for clarity.
  • FIG. 3 is a schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 3 of the present invention.
  • the invention provides a display panel with a stress relief structure and a manufacturing method thereof.
  • the stress relief structure is disposed in the bending area of the display panel, and the stress relief structure is formed by forming at least one of the flat layer and the pixel definition layer in the bending area to have a plurality of semi-cylindrical parallel to each other To form.
  • the stress relief structure can release the stress on the metal traces in the bending area, thereby solving the technical problems encountered by the existing display panel.
  • the present invention has three embodiments, as described in detail in the following examples one to three.
  • FIG. 1A is a schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 1 of the present invention.
  • FIG. 1B is a perspective view of the display panel of FIG. 1A with the photosensitive gap sublayer omitted for clarity.
  • Embodiment 1 of the present invention provides a display panel 1000 having a stress relief structure, including:
  • a substrate 100 the substrate 100 has a display area 101, a bending area 102 and a peripheral area 103, the bending area 102 is located between the display area 101 and the peripheral area 103;
  • a flat layer 30, the flat layer 30 is located in the bending region 102, and is disposed on the metal trace 20;
  • a pixel definition layer 40 is located in the bending region 102 and is disposed on the flat layer 30.
  • a driver IC (not shown) is provided in the peripheral area 103, an organic light emitting diode (OLED) 500 is provided in the display area 101, and the metal trace 20 is connected to the The driving chip and the organic light emitting diode device 500.
  • the metal trace 20 is formed in synchronization with the source/drain in the display area 101 shown.
  • the organic light emitting diode device 500 includes an anode 501, a light emitting layer 502, and a cathode 503.
  • the pixel definition layer 40 is used to define pixels in the display area 101.
  • an encapsulation layer 70 is provided in the display area 101.
  • the encapsulation layer 70 includes two organic sub-layers 71 and 73 and an inorganic sub-layer 72.
  • the encapsulation layer 70 is used to protect the organic light emitting diode device 500 from water And oxygen intrusion.
  • the flat layer 30 and the pixel definition layer 40 in the curved region 102 each include a plurality of semi-cylinders parallel to each other.
  • the semi-cylinders of the pixel definition layer 40 have the same extending direction and are staggered with each other.
  • the stress relief structure of the first embodiment is that the flat layer 30 and the pixel definition layer 40 in the curved region 102 each include a plurality of semi-cylinders parallel to each other. Therefore, when the bending region 102 of the display panel 1000 is bent, and therefore the metal trace 20 in the bending region 102 is subjected to tensile stress, both the flat layer 30 and the pixel defining layer 40 may be The tensile stress on the metal trace 20 in the bending region 102 is released.
  • the angle between the extension direction of the semi-cylinder and the extension direction of the metal trace (between 0° and 90°) can be adjusted appropriately according to different product designs to stretch the release The effect of stress is maximized.
  • the flat layer 30 and the pixel definition layer 40 in the bent region 102 can be formed in the same photomask process as the flat layer 30 and the pixel definition layer 40 of the display region 101 through processes such as exposure and development.
  • the flat layer 30 and the pixel definition layer 40 in the bent region 102 can also be formed by an imprint process.
  • the display panel with a stress relief structure further includes a photo spacer layer 60.
  • the photo spacer layer 60 is located in the bending region 102 and is disposed on the pixel definition layer 40.
  • the photosensitive gap sub-layer 60 serves as a process mask of the light-emitting layer 502 during the evaporation process.
  • the materials of the flat layer 30, the pixel definition layer 40 and the photosensitive gap sub-layer 60 are all polyimide.
  • the substrate 100 has an organic material filled hole (ODH) 80 in the bending region, and the polyimide material 81 fills the hole 80.
  • ODH organic material filled hole
  • Polyimide is an organic material. Therefore, according to the present invention, in addition to the stress relief structure including the semi-cylindrical body, which can release the stress borne by the metal trace, polyimide can also play the role of releasing the stress.
  • FIGS. 2A and 2B are schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 2 of the present invention.
  • FIG. 2B is a perspective view of the display panel of FIG. 2A, with the photosensitive gap sublayer omitted for clarity.
  • the difference between the second embodiment and the first embodiment is that the flat layer 30 and the pixel definition layer 40 each include a plurality of semi-cylindrical bodies parallel to each other.
  • the semi-cylinders of the pixel definition layer 40 have different extending directions and there is an angle between them.
  • the flat layer 30 and the semi-cylinder constituting the pixel definition layer 40 can separate the metal The tensile stress experienced by the trace 20 is released in different directions.
  • FIG. 3 is a schematic cross-sectional structure diagram of a display panel with a stress relief structure manufactured according to Embodiment 3 of the present invention.
  • the difference between the third embodiment and the first embodiment is that the flat layer 30 includes a plurality of semi-cylinders parallel to each other, and the pixel definition layer 40 includes a continuous sheet.
  • the stress relief structure can still significantly achieve the stress relief of the metal traces Technical effect.
  • the invention also proposes a method for manufacturing a display panel 1000 with a stress relief structure, which includes the following steps:
  • a substrate 100 is provided, the substrate having a display area 101, a bending area 102 and a peripheral area 103, the bending area 102 is located between the display area 101 and the peripheral area 103;
  • the flat layer 30 is located in the bending region 102;
  • the pixel definition layer 40 is located in the bending region 102;
  • At least one of the flat layer 30 and the pixel definition layer 20 is composed of a plurality of semi-cylinders parallel to each other.
  • the stress relief structure is formed by forming at least one of the flat layer 30 and the pixel definition layer 40 in the bending region 102 to have a plurality of semi-cylindrical bodies parallel to each other.
  • the flat layer 30 and the pixel definition layer 40 each include a plurality of semi-cylinders parallel to each other, and the semi-cylinder constituting the flat layer 30 is the same as the semi-cylinder constituting the pixel definition layer 40 The direction of extension is staggered.
  • the flat layer 30 and the pixel definition layer 40 each include a plurality of semi-cylinders parallel to each other, and the semi-cylinder constituting the flat layer 30 and the semi-cylinder constituting the pixel definition layer 40 have different Direction of extension and there is an angle between them.
  • the flat layer 30 includes a plurality of semi-cylinders parallel to each other, and the pixel definition layer 40 includes a continuous sheet.
  • the present invention provides a display panel with a stress relief structure and a manufacturing method thereof.
  • the stress relief structure is disposed in the bending area of the display panel, and the stress relief structure is formed by forming at least one of the flat layer and the pixel definition layer in the bending area to have a plurality of semi-cylindrical parallel to each other To form.
  • the stress relief structure can release the stress on the metal traces in the bending area, thereby solving the technical problems encountered by the existing display panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本发明提出一种具有应力缓解结构的显示面板及其制作方法。所述具有应力缓解结构的显示面板包括：一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；一金属走线，所述金属走线设置在所述基板上且从所述显示区域延伸至所述周边区域；一平坦层，所述平坦层位于所述弯折区域中，并设置在所述金属走线上；及一像素定义层，所述像素定义层位于所述弯折区域中，并设置在所述平坦层上；其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体。

Description

具有应力缓解结构的显示面板及其制作方法 技术领域
本发明涉及显示技术领域，特别涉及一种具有应力缓解结构的显示面板及其制作方法。
 背景技术
有机发光二极管(organic light emitting diode，OLED)显示器具有宽视角、高对比度和快速响应的优点，因此OLED显示器的研究与发展广受到关注。
OLED显示面板包括OLED器件、驱动芯片(Drive IC)与连接此两者的金属走线。所述OLED器件设置在面板的显示区域中，所述驱动芯片设置在面板的周边区域中，所述金属走线从所述显示区域延伸至所述周边区域以将所述OLED器件连接至所述驱动芯片。
为了减少显示面板的边框的宽度，通常将驱动芯片所在的面板部分弯折到OLED器件所在的面板部分的背面，被弯折的区域即为显示面板的弯折区域(bending area)。显示面板的弯折区域包括柔性基板、有机材料填充穿孔(organic deep hole，ODH)、金属走线、平坦层、像素定义层及感光间隙子(photo spacer)层。然而，在显示面板制作工艺的弯折过程中，金属走线受到弯折会累积应力，金属走线容易在弯折过程中断裂，这降低了显示面板的可靠性与制造良率。
因此，有必要提供一种具有应力缓解结构的显示面板及其制作方法，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种具有应力缓解结构的显示面板及其制作方法，以解决现有技术中金属走线容易断裂、显示面板的制造良率低的技术问题。
 技术解决方案
为解决上述技术问题，本发明提供一种具有应力缓解结构的显示面板，包括：
一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；
一金属走线，所述金属走线设置在所述基板上且从所述显示区域延伸至所述周边区域；
一平坦层，所述平坦层位于所述弯折区域中，并设置在所述金属走线上；及
一像素定义层，所述像素定义层位于所述弯折区域中，并设置在所述平坦层上；
其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体。
根据本发明一优选实施例，所述周边区域中设置有一驱动芯片，所述显示区域中设置有一有机发光二极管器件，所述金属走线连接所述驱动芯片与所述有机发光二极管器件。
根据本发明一优选实施例，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有相同的延伸方向且彼此交错排列。
根据本发明一优选实施例，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有不同的延伸方向且在其之间存在一角度。
根据本发明一优选实施例，所述平坦层包括多个彼此平行的半圆柱体，所述像素定义层包括一连续的片体。
根据本发明一优选实施例，所述具有应力缓解结构的显示面板更包括：
一感光间隙子层，所述感光间隙子层位于所述弯折区域中，并设置在所述像素定义层上。
根据本发明一优选实施例，所述平坦层、所述像素定义层与所述感光间隙子层的材质均为聚酰亚胺。
根据本发明一优选实施例，所述基板在弯折区域具有一有机材料填充穿孔，聚酰亚胺材料填满所述穿孔。
本发明还提供一种制作具有应力缓解结构的显示面板的方法，包括以下步骤：
提供一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；
形成一金属走线于所述基板上，所述金属走线从所述显示区域延伸至所述周边区域；
形成一平坦层于所述金属走线上，所述平坦层位于所述弯折区域中；及
形成一像素定义层于所述平坦层上，所述像素定义层位于所述弯折区域中；
其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体。
根据本发明一优选实施例，
所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有相同的延伸方向且彼此交错排列；
所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有不同的延伸方向且在其之间存在一角度；或
所述平坦层包括多个彼此平行的半圆柱体，所述像素定义层包括一连续的片体。
 有益效果
相较于现有技术，本发明提出一种具有应力缓解结构的显示面板及其制作方法。所述应力缓解结构设置在所述显示面板的弯折区域中，所述应力缓解结构是通过将弯折区域中的平坦层与像素定义层的至少一者形成为具有多个彼此平行的半圆柱体来形成。所述应力缓解结构可以释放弯折区域中的金属走线所承受的应力，藉此解决现有显示面板所遭遇的技术问题。
 附图说明
图1A为根据本发明的实施例一所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。
图1B为图1A的显示面板的立体图，其为了清晰起见而省略了感光间隙子层。
图2A为根据本发明的实施例二所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。
图2B为图2A的显示面板的立体图，其为了清晰起见而省略了感光间隙子层。
图3为根据本发明的实施例三所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是以相同标号表示。
本发明提出一种具有应力缓解结构的显示面板及其制作方法。所述应力缓解结构设置在所述显示面板的弯折区域中，所述应力缓解结构是通过将弯折区域中的平坦层与像素定义层的至少一者形成为具有多个彼此平行的半圆柱体来形成。当所述显示面板的弯折区域被弯折时，所述应力缓解结构可以释放弯折区域中的金属走线所承受的应力，藉此解决现有显示面板所遭遇的技术问题。
本发明具有三种实施方式，如以下实施例一至三所详细叙述。
实施例一：
请参照图1A与1B。图1A为根据本发明的实施例一所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。图1B为图1A的显示面板的立体图，其为了清晰起见而省略了感光间隙子层。
如图1A所示，本发明实施例一提出一种具有应力缓解结构的显示面板1000，包括：
一基板100，所述基板100具有一显示区域101、一弯折区域102与一周边区域103，所述弯折区域102位在所述显示区域101与所述周边区域103之间；
一金属走线20，所述金属走线20设置在所述基板100上且从所述显示区域101延伸至所述周边区域103；
一平坦层30，所述平坦层30位于所述弯折区域102中，并设置在所述金属走线20上；及
一像素定义层40，所述像素定义层40位于所述弯折区域102中，并设置在所述平坦层30上。
所述周边区域103中设置有一驱动芯片(Drive IC)(未示出)，所述显示区域101中设置有一有机发光二极管器件(organic light emitting diode，OLED)500，所述金属走线20连接所述驱动芯片与所述有机发光二极管器件500。优选地，所述金属走线20是与所示显示区域101中的源/漏极同步形成。
所述有机发光二极管器件500包括阳极501、发光层502与阴极503。所述像素定义层40用以定义显示区域101中的像素。
另外，所述显示区域101中设置有封装层70，封装层70包括两个有机子层71、73与一个无机子层72，封装层70用以保护所述有机发光二极管器件500免于受到水和氧的侵入影响。
如图1B所示，在本实施例一中，弯曲区域102中的平坦层30与像素定义层40均包括多个彼此平行的半圆柱体，构成所述平坦层30的半圆柱体与构成所述像素定义层40的半圆柱体具有相同的延伸方向且彼此交错排列。
本实施例一的应力缓解结构是通过将弯曲区域102中的平坦层30与像素定义层40均包括多个彼此平行的半圆柱体。是以，当所述显示面板1000的弯折区域102被弯折，且因此弯折区域102中的金属走线20受到拉伸应力(tensile stress)时，平坦层30与像素定义层40均可以释放弯折区域102中的金属走线20所承受的拉伸应力。
又，根据本发明，可以根据不同的产品设计适当地调整半圆柱体的延伸方向与金属走线的延伸方向之间的夹角(介于0°至90°之间)，以将释放拉伸应力的效果最大化。
弯折区域102中的平坦层30与像素定义层40可以通过曝光、显影等工序在与显示区域101的平坦层30与像素定义层40的相同的光罩工艺中形成。另外，弯折区域102中的平坦层30与像素定义层40也可以通过压印工艺来形成。
所述具有应力缓解结构的显示面板更包括一感光间隙子(photo spacer)层60，所述感光间隙子层60位于所述弯折区域102中，并设置在所述像素定义层40上。所述感光间隙子层60是作为发光层502在蒸镀过程期间的制程掩膜板(process mask)。
优选地，所述平坦层30、所述像素定义层40与所述感光间隙子层60的材质均为聚酰亚胺。优选地，所述基板100在弯折区域具有一有机材料填充穿孔(organic deep hole，ODH)80，聚酰亚胺材料81填满所述穿孔80。聚酰亚胺是有机材料。因此，根据本发明，除了包括半圆柱体的应力缓解结构可以释放金属走线所承受的应力，聚酰亚胺亦可以起到释放应力的效果。
实施例二：
请参照图2A与2B。图2A为根据本发明的实施例二所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。图2B为图2A的显示面板的立体图，其为了清晰起见而省略了感光间隙子层。
如图2B所示，本实施例二与实施例一的差异在于平坦层30与像素定义层40均包括多个彼此平行的半圆柱体，构成所述平坦层30的半圆柱体与构成所述像素定义层40的半圆柱体具有不同的延伸方向且在其之间存在一角度。
通过将构成所述平坦层30的半圆柱体与构成所述像素定义层40的半圆柱体形成为具有不同的延伸方向且在其之间存在一角度，平坦层30与像素定义层40可以将金属走线20所承受的拉伸应力释放到不同的方向。
实施例三：
请参照图3。图3为根据本发明的实施例三所制作的一种具有应力缓解结构的显示面板的剖面结构示意图。
如图3所示，本实施例三与实施例一的差异在于平坦层30包括多个彼此平行的半圆柱体，像素定义层40包括一连续的片体。
尽管仅有平坦层30被形成为包括多个彼此平行的半圆柱体，而像素定义层40被形成为包括一连续的片体，应力缓解结构仍可以显着地达到释放金属走线所承受的应力的技术效果。
本发明还提出一种制作具有应力缓解结构的显示面板1000的方法，包括以下步骤：
提供一基板100，所述基板具有一显示区域101、一弯折区域102与一周边区域103，所述弯折区域102位在所述显示区域101与所述周边区域103之间；
形成一金属走线20于所述基板上，所述金属走线20从所述显示区域101延伸至所述周边区域103；
形成一平坦层30于所述金属走线20上，所述平坦层30位于所述弯折区域102中；及
形成一像素定义层40于所述平坦层30上，所述像素定义层40位于所述弯折区域102中；
其中所述平坦层30与所述像素定义层20的至少一者由多个彼此平行的半圆柱体构成。
所述应力缓解结构是通过将弯折区域102中的平坦层30与像素定义层40的至少一者形成为具有多个彼此平行的半圆柱体来形成。例如，所述平坦层30与所述像素定义层40均包括多个彼此平行的半圆柱体，构成所述平坦层30的半圆柱体与构成所述像素定义层40的半圆柱体具有相同的延伸方向且彼此交错排列。或者，所述平坦层30与所述像素定义层40均包括多个彼此平行的半圆柱体，构成所述平坦层30的半圆柱体与构成所述像素定义层40的半圆柱体具有不同的延伸方向且在其之间存在一角度。又或者，所述平坦层30包括多个彼此平行的半圆柱体，所述像素定义层40包括一连续的片体。
相较于现有技术，本发明提出一种具有应力缓解结构的显示面板及其制作方法。所述应力缓解结构设置在所述显示面板的弯折区域中，所述应力缓解结构是通过将弯折区域中的平坦层与像素定义层的至少一者形成为具有多个彼此平行的半圆柱体来形成。所述应力缓解结构可以释放弯折区域中的金属走线所承受的应力，藉此解决现有显示面板所遭遇的技术问题。
综上所述，虽然本发明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发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (14)

  1. 一种具有应力缓解结构的显示面板，包括：
    一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；
    一金属走线，所述金属走线设置在所述基板上且从所述显示区域延伸至所述周边区域；
    一平坦层，所述平坦层位于所述弯折区域中，并设置在所述金属走线上；及
    一像素定义层，所述像素定义层位于所述弯折区域中，并设置在所述平坦层上；
    其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体；
    其中所述周边区域中设置有一驱动芯片，所述显示区域中设置有一有机发光二极管器件，所述金属走线连接所述驱动芯片与所述有机发光二极管器件。
  2. 根据权利要求1所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有相同的延伸方向且彼此交错排列。
  3. 根据权利要求1所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有不同的延伸方向且在其之间存在一角度。
  4. 根据权利要求1所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层包括多个彼此平行的半圆柱体，所述像素定义层包括一连续的片体。
  5. 一种具有应力缓解结构的显示面板，包括：
    一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；
    一金属走线，所述金属走线设置在所述基板上且从所述显示区域延伸至所述周边区域；
    一平坦层，所述平坦层位于所述弯折区域中，并设置在所述金属走线上；及
    一像素定义层，所述像素定义层位于所述弯折区域中，并设置在所述平坦层上；
    其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体。
  6. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述周边区域中设置有一驱动芯片，所述显示区域中设置有一有机发光二极管器件，所述金属走线连接所述驱动芯片与所述有机发光二极管器件。
  7. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有相同的延伸方向且彼此交错排列。
  8. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有不同的延伸方向且在其之间存在一角度。
  9. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层包括多个彼此平行的半圆柱体，所述像素定义层包括一连续的片体。
  10. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述具有应力缓解结构的显示面板更包括：
    一感光间隙子层，所述感光间隙子层位于所述弯折区域中，并设置在所述像素定义层上。
  11. 根据权利要求10所述的具有应力缓解结构的显示面板，其特征在于，所述平坦层、所述像素定义层与所述感光间隙子层的材质均为聚酰亚胺。
  12. 根据权利要求5所述的具有应力缓解结构的显示面板，其特征在于，所述基板在弯折区域具有一有机材料填充穿孔，聚酰亚胺材料填满所述穿孔。
  13. 一种制作具有应力缓解结构的显示面板的方法，包括以下步骤：
    提供一基板，所述基板具有一显示区域、一弯折区域与一周边区域，所述弯折区域位在所述显示区域与所述周边区域之间；
    形成一金属走线于所述基板上，所述金属走线从所述显示区域延伸至所述周边区域；
    形成一平坦层于所述金属走线上，所述平坦层位于所述弯折区域中；及
    形成一像素定义层于所述平坦层上，所述像素定义层位于所述弯折区域中；
    其中所述平坦层与所述像素定义层的至少一者包括多个彼此平行的半圆柱体。
  14. 根据权利要求13所述的制作具有应力缓解结构的显示面板的方法，其特征在于，
    所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有相同的延伸方向且彼此交错排列；
    所述平坦层与所述像素定义层均包括多个彼此平行的半圆柱体，构成所述平坦层的半圆柱体与构成所述像素定义层的半圆柱体具有不同的延伸方向且在其之间存在一角度；或
    所述平坦层包括多个彼此平行的半圆柱体，所述像素定义层包括一连续的片体。
PCT/CN2019/075031 2018-12-24 2019-02-14 具有应力缓解结构的显示面板及其制作方法 Ceased WO2020133640A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/326,372 US11139355B2 (en) 2018-12-24 2019-02-14 Display panel having stress releasing structure and method for manufacturing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811582355.0 2018-12-24
CN201811582355.0A CN109378339B (zh) 2018-12-24 2018-12-24 具有应力缓解结构的显示面板及其制作方法

Publications (1)

Publication Number Publication Date
WO2020133640A1 true WO2020133640A1 (zh) 2020-07-02

Family

ID=65371736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/075031 Ceased WO2020133640A1 (zh) 2018-12-24 2019-02-14 具有应力缓解结构的显示面板及其制作方法

Country Status (3)

Country Link
US (1) US11139355B2 (zh)
CN (1) CN109378339B (zh)
WO (1) WO2020133640A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110265569A (zh) 2019-06-10 2019-09-20 武汉华星光电半导体显示技术有限公司 柔性显示面板及其制造方法
CN110993653A (zh) * 2019-11-25 2020-04-10 武汉华星光电半导体显示技术有限公司 一种oled显示面板及显示装置
CN111627931B (zh) * 2020-05-28 2023-04-07 武汉华星光电半导体显示技术有限公司 Oled显示面板及其制作方法
WO2025213300A1 (zh) * 2024-04-07 2025-10-16 京东方科技集团股份有限公司 显示面板、显示面板的制造方法及显示装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017277A (zh) * 2015-10-22 2017-08-04 三星显示有限公司 有机发光二极管显示器
CN107910350A (zh) * 2017-11-14 2018-04-13 京东方科技集团股份有限公司 一种显示基板、显示装置
US20180197930A1 (en) * 2015-10-16 2018-07-12 Samsung Display Co., Ltd. Display device
CN108878687A (zh) * 2018-06-29 2018-11-23 上海天马微电子有限公司 一种显示面板和电子设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100637193B1 (ko) * 2004-11-25 2006-10-23 삼성에스디아이 주식회사 전계 발광 디스플레이 장치 및 이의 제조 방법
KR102079188B1 (ko) * 2012-05-09 2020-02-19 가부시키가이샤 한도오따이 에네루기 켄큐쇼 발광 장치 및 전자 기기
KR102000043B1 (ko) * 2012-10-31 2019-07-15 엘지디스플레이 주식회사 유기전계발광 표시소자 및 그 제조방법
KR102176719B1 (ko) * 2013-10-14 2020-11-10 삼성디스플레이 주식회사 플렉서블 표시판 및 그 제조 방법
US9544994B2 (en) * 2014-08-30 2017-01-10 Lg Display Co., Ltd. Flexible display device with side crack protection structure and manufacturing method for the same
KR102454152B1 (ko) * 2015-10-23 2022-10-13 삼성디스플레이 주식회사 표시 장치
CN106252380B (zh) * 2016-08-31 2020-04-03 上海天马有机发光显示技术有限公司 柔性显示面板及装置
CN107331686A (zh) * 2017-06-30 2017-11-07 武汉华星光电半导体显示技术有限公司 Oled显示面板、线路结构及oled显示设备
CN207116427U (zh) * 2017-08-23 2018-03-16 京东方科技集团股份有限公司 一种柔性显示面板及显示装置
CN107706220B (zh) * 2017-09-28 2020-04-21 上海天马微电子有限公司 柔性显示面板及其制作方法和显示装置
CN107742639B (zh) * 2017-11-27 2020-10-13 深圳市华星光电技术有限公司 柔性oled显示面板及显示装置
CN108198827B (zh) * 2018-01-29 2021-02-23 上海天马微电子有限公司 一种柔性显示面板及显示装置
CN108598135A (zh) * 2018-06-06 2018-09-28 武汉华星光电半导体显示技术有限公司 Oled显示面板及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180197930A1 (en) * 2015-10-16 2018-07-12 Samsung Display Co., Ltd. Display device
CN107017277A (zh) * 2015-10-22 2017-08-04 三星显示有限公司 有机发光二极管显示器
CN107910350A (zh) * 2017-11-14 2018-04-13 京东方科技集团股份有限公司 一种显示基板、显示装置
CN108878687A (zh) * 2018-06-29 2018-11-23 上海天马微电子有限公司 一种显示面板和电子设备

Also Published As

Publication number Publication date
CN109378339B (zh) 2021-09-24
US20210159290A1 (en) 2021-05-27
CN109378339A (zh) 2019-02-22
US11139355B2 (en) 2021-10-05

Similar Documents

Publication Publication Date Title
WO2020133640A1 (zh) 具有应力缓解结构的显示面板及其制作方法
CN109256412B (zh) 有机发光二极管显示器及其制造方法
US10798831B2 (en) Display device
CN108539016B (zh) 柔性衬底及其制备方法、显示面板的制备方法和显示装置
WO2020155517A1 (zh) 柔性阵列基板、显示面板及制备方法
CN109148530B (zh) 一种有机发光二极管显示器的制作方法
US11228007B2 (en) Flexible substrate, display panel, and method of fabricating flexible substrate comprising strengthening layer and flexible material
CN109301092B (zh) Oled显示面板及其制作方法
WO2021027095A1 (zh) 一种柔性显示面板
WO2015131515A1 (zh) 柔性显示器及其制备方法
TWI660499B (zh) 顯示裝置
WO2020118908A1 (zh) 显示装置及其制造方法
CN107910336A (zh) 阵列基板及其制造方法及显示屏
CN107699852A (zh) 掩膜板及其制造方法、蒸镀方法
CN100355107C (zh) 有机电致发光器件
WO2018059028A1 (zh) 双面显示面板及其制作方法、显示装置
WO2021082554A1 (zh) 一种柔性显示屏、显示终端
KR20140136762A (ko) 유기 발광 표시 장치 및 그 제조 방법
WO2020124823A1 (zh) 显示面板及显示模组
CN107425039B (zh) 一种显示面板、显示面板的制造方法和显示装置
JP2018506836A (ja) フレキシブル有機発光ディスプレイ及びその製造方法
WO2019184901A1 (zh) 显示面板及其制造方法、显示装置
WO2020077785A1 (zh) 柔性显示装置
CN204361100U (zh) 一种有机发光显示装置
WO2020211153A1 (zh) 双面白光有机发光二极管显示装置及其制造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19905405

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19905405

Country of ref document: EP

Kind code of ref document: A1