WO2020124773A1 - 柔性oled显示面板及其制作方法 - Google Patents

柔性oled显示面板及其制作方法 Download PDF

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Publication number
WO2020124773A1
WO2020124773A1 PCT/CN2019/075620 CN2019075620W WO2020124773A1 WO 2020124773 A1 WO2020124773 A1 WO 2020124773A1 CN 2019075620 W CN2019075620 W CN 2019075620W WO 2020124773 A1 WO2020124773 A1 WO 2020124773A1
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WO
WIPO (PCT)
Prior art keywords
display panel
flexible oled
oled display
barrier wall
bending
Prior art date
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PCT/CN2019/075620
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English (en)
French (fr)
Inventor
邹新
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 US16/467,772 priority Critical patent/US11302891B2/en
Publication of WO2020124773A1 publication Critical patent/WO2020124773A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • 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
    • 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
    • H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
    • H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
    • H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
    • 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
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the field of display technology, in particular to a flexible OLED display panel and a manufacturing method thereof.
  • the existing flat display devices mainly include liquid crystal display devices (Liquid Crystal Display (LCD) and Organic Light Emitting Display (OLED).
  • LCD Liquid Crystal Display
  • OLED Organic Light Emitting Display
  • Organic light-emitting diode display devices have self-illumination, no backlight, high contrast, thin thickness, wide viewing angle, fast response speed, can be used in flexible panels, wide use temperature range, simple structure and manufacturing process, etc. It is considered to be an emerging application technology for next-generation flat panel displays.
  • An organic light emitting diode display device generally includes a substrate, an anode provided on the substrate, an organic light emitting layer provided on the anode, an electron transport layer provided on the organic light emitting layer, and a cathode provided on the electron transport layer.
  • the hole from the anode and the electron from the cathode are emitted to the organic light-emitting layer, and these electrons and holes are combined to generate an excited electron-hole pair, and the excited electron-hole pair is converted from the excited state to the ground state Achieve glow.
  • the flexible OLED panel is an important research direction of OLED display devices. It uses a flexible substrate to replace the traditional glass substrate to achieve the flexibility of the panel, bringing consumers a disruptive concept, which can enhance the user experience and enhance product competitiveness. .
  • the display technology of flexible OLED organic light-emitting devices has developed rapidly, and flexible mass production projects in various places have continued to be put into production. Compared with traditional glass rigid display devices, flexible display devices have impact resistance, shock resistance, light weight, small size and even A series of advantages such as wearing.
  • An object of the present invention is to provide a flexible OLED display panel, which can enhance the water-oxygen barrier ability of the flexible OLED display panel at the bend, improve the life of the flexible OLED display panel, and avoid display defects caused by cracks at the bend.
  • the purpose of the present invention is also to provide a method for manufacturing a flexible OLED display panel, which can enhance the water-oxygen barrier ability of the flexible OLED display panel at the bend, improve the life of the flexible OLED display panel, and avoid display defects caused by cracks at the bend .
  • the present invention provides a flexible OLED display panel, which includes a flexible substrate, a display layer provided on the flexible substrate, a first inorganic layer provided on the display layer, and the first A barrier wall on the inorganic layer for preventing water and oxygen from entering, an organic layer provided on the barrier wall and the first inorganic layer, and a second inorganic layer provided on the organic layer;
  • the flexible OLED display panel can be bent along a preset bending area, and the barrier wall is provided in the bending area and located outside the effective display area of the flexible OLED display panel.
  • the flexible OLED display panel can be bent once along a preset bending area, and the number of the barrier walls is two, which are arranged at both ends of the bending area.
  • the flexible OLED display panel can be bent twice along two preset bending regions spaced apart from each other.
  • the number of the barrier walls is four, and a barrier wall is provided at each end of each bending region.
  • the material of the barrier wall is a combination of high molecular polymer and water-absorbing nanoparticles.
  • the high-molecular polymer is a combination of one or more of acrylic, polyethylene and polycarbonate materials; the water-absorbing nanoparticles are one or a combination of calcium oxide and calcium chloride.
  • the invention also provides a method for manufacturing a flexible OLED display panel, including the following steps:
  • Step S1 providing a flexible substrate, and forming a display layer on the flexible substrate;
  • Step S2 forming a first inorganic layer on the display layer
  • Step S3 forming a barrier wall on the first inorganic layer
  • Step S4 Form an organic layer on the barrier wall and the first inorganic layer, and form a second inorganic layer on the organic layer to obtain a flexible OLED display panel;
  • the flexible OLED display panel can be bent along a preset bending area, the barrier wall is formed in the bending area, and is located outside the effective display area of the flexible OLED display panel.
  • the flexible OLED display panel can be bent once along a preset bending area, and the number of the barrier walls is two, which are arranged at two ends of the bending area.
  • the flexible OLED display panel can be bent twice along two preset bending regions spaced apart from each other.
  • the number of the barrier walls is four, and a barrier wall is provided at each end of each bending region.
  • the material of the barrier wall is a combination of high molecular polymer and water-absorbing nanoparticles
  • the high-molecular polymer is a combination of one or more of acrylic, polyethylene and polycarbonate materials; the water-absorbing nanoparticles are one or a combination of calcium oxide and calcium chloride.
  • the first inorganic layer and the second inorganic layer are formed by a chemical vapor deposition process, the organic layer is formed by a spin coating or inkjet printing process, and the barrier wall is formed by a spray coating or inkjet printing process.
  • the present invention provides a flexible OLED display panel, which includes a flexible substrate, a display layer provided on the flexible substrate, a first inorganic layer provided on the display layer, and a A barrier wall for preventing water and oxygen intrusion on an inorganic layer, an organic layer provided on the barrier wall and the first inorganic layer, and a second inorganic layer provided on the organic layer;
  • the flexible OLED display panel can Bending is performed in a predetermined bending area, and the barrier wall is provided in the bending area and is located outside the effective display area of the flexible OLED display panel.
  • the flexible OLED By adding a barrier wall in the bending area, the flexible OLED can be enhanced
  • the water-oxygen barrier capability of the display panel at the bend improves the life of the flexible OLED display panel and avoids poor display due to cracks at the bend.
  • the invention also provides a method for manufacturing a flexible OLED display panel, which can enhance the water-oxygen barrier ability of the flexible OLED display panel at the bend, improve the life of the flexible OLED display panel, and avoid poor display caused by cracks at the bend.
  • FIG. 1 is a plan view of a first embodiment of the flexible OLED display panel of the present invention.
  • Figure 2 is a cross-sectional view at A-A in Figure 1;
  • FIG. 3 is a schematic view of a first embodiment of the flexible OLED display panel of the present invention in a bent state
  • FIG. 4 is a top view of a second embodiment of the flexible OLED display panel of the present invention.
  • FIG. 5 is a cross-sectional view at B-B in FIG. 4;
  • FIG. 6 is a schematic view of a second embodiment of the flexible OLED display panel of the present invention in a bent state
  • FIG. 7 is a flowchart of a method for manufacturing a flexible OLED display panel of the present invention.
  • the present invention provides a flexible OLED Display panel, including flexible substrate 10 ⁇ Installed on the flexible substrate 10 Display layer 20 , Located on the display layer 20
  • the first inorganic layer 30 Located on the first inorganic layer 30 Barrier wall for preventing water and oxygen from entering 40 ⁇ Installed on the barrier wall 40 And the first inorganic layer 30 Organic layer 50 And on the organic layer 50 Second inorganic layer 60 ;
  • the flexibility OLED The display panel can be along the preset bending area 100 Bending, the barrier wall 40 Set in the bending zone 100 Inside and located in the flexible OLED The effective display area of the display panel is outside.
  • the bending zone 100 The position and number of the can be set according to needs, the barrier wall 40 The number and location of 100 The position and quantity of the
  • the flexible OLED The display panel can be divided into effective display areas according to whether it is displayed 201 ( Active Area , AA ) And surround the effective display area 101 Inactive display area 202 , And according to whether it is bent, it can be divided into bending areas 100 And in the bend zone 100 Non-bending zone 101 , Where the bending zone 100 And inactive display area 202
  • the overlapping area is the barrier wall 40 The area where, and in order to ensure the water and oxygen barrier effect, along the bending area 100 Direction of bending, the bending zone 100 Is equal to the barrier wall 40 The length of the barrier wall, so that after bending, the barrier wall 40 Ability to completely block from the bending zone 100 Infiltrating water vapor.
  • the flexible OLED The display panel can be along a preset bending zone 100 Bend once, the barrier wall 40 The number is two, located in the bending area 100 Both ends.
  • the flexible OLED The display panel is divided into bending areas 100 And are located in the bending zone 100
  • the two non-bending areas on the upper and lower sides of 101 The bending zone 100 Of the middle part falls into the effective display area 201 Inside, the left and right sides fall into the non-effective display area 202 Inside, the two barrier walls 40 Located in the bending zone 100 The left and right sides fall into the inactive display area 202 Within the two areas.
  • the flexible OLED The display panel can be along the bending area 100 Bend up and down to make two non-bent areas 101 Forming an angle while in the bending zone 100 Side of the barrier wall 40 Completely blocked the invasion path of water and oxygen, improving flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.
  • the flexible OLED The display panel can be along two preset bending zones 100 Bend once, the barrier wall 40 The number is four, and each bending zone 100 There is a barrier wall at each end 40 .
  • the flexible OLED The display panel is divided into two spaced-apart bending areas 100 And located in two bending zones 100 The two non-bending areas on the left and right sides of 101 And two bending zones 100 Non-bending zone 101 , The bending zone 100 Of the middle part falls into the effective display area 201 Inside, the upper and lower sides fall into the ineffective display area 202 Inside, the four barrier walls 40 Located in the two bending zones 100 The upper and lower sides fall into the ineffective display area 202 Within the four areas.
  • the flexible OLED The display panel can be along the bending area 100 Bend left and right to make the flexibility OLED
  • the display panel is bent into a " ⁇ " shape, in the bending area 100
  • Side of the barrier wall 40 Completely blocked the invasion path of water and oxygen, improving flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.
  • the barrier wall 40 The material is a particulate matter capable of absorbing water and oxygen, such as a combination of a polymer and a water-absorbing nanoparticle.
  • the polymer is one or more of acrylic, polyethylene and polycarbonate materials
  • the combination of the water-absorbing nanoparticles is one or a combination of calcium oxide and calcium chloride.
  • the barrier wall 40 Perpendicular to the first inorganic layer 30 The thickness in the direction of 1 ⁇ 3 ⁇ m .
  • the display layer 20 Including thin film transistor drive circuit layer twenty one And on the thin film transistor driver circuit layer twenty one Up OLED Device layer twenty two .
  • the first inorganic layer 30 And the second inorganic layer 60 The material is a combination of one or more of silicon nitride, silicon oxide and aluminum oxide.
  • the material of the organic layer is hexamethyldisiloxane, polyacrylate or polystyrene.
  • the organic layer 50 Is slightly thicker than the barrier wall 40 Thickness to ensure the organic layer 50 Capable of covering barrier walls 40 .
  • the manufacturing method of the display panel includes the following steps:
  • step S1 Provide a flexible substrate 10 , On the flexible substrate 10 Display layer 20 ;
  • step S2 In the display layer 20 Forming the first inorganic layer 30 ;
  • step S3 In the first inorganic layer 30 Barrier wall 40 ;
  • step S4 In the barrier wall 40 And the first inorganic layer 30 Organic layer 50 , In the organic layer 50 Forming a second inorganic layer 60 To get flexibility OLED Display panel
  • the flexibility OLED The display panel can be along the preset bending area 100 Bending, the barrier wall 40 Formed in the bending zone 100 Inside and located in the flexible OLED The effective display area of the display panel is outside.
  • the bending zone 100 The position and number of the can be set according to needs, the barrier wall 40 The number and location of 100 The position and quantity of the
  • the flexible OLED The display panel can be divided into effective display areas according to whether it is displayed 201 ( Active Area , AA ) And surround the effective display area 101 Inactive display area 202 , And according to whether it is bent, it can be divided into bending areas 100 And in the bend zone 100 Non-bending zone 101 , Where the bending zone 100 And inactive display area 202
  • the overlapping area is the barrier wall 40 The area where, and in order to ensure the water and oxygen barrier effect, along the bending area 100 Direction of bending, the bending zone 100 Is equal to the barrier wall 40 The length of the barrier wall, so that after bending, the barrier wall 40 Ability to completely block from the bending zone 100 Infiltrating water vapor.
  • the flexible OLED The display panel can be along a preset bending zone 100 Bend once, the barrier wall 40 The number is two, located in the bending area 100 Both ends.
  • the flexible OLED The display panel is divided into bending areas 100 And are located in the bending zone 100
  • the two non-bending areas on the upper and lower sides of 101 The bending zone 100 Of the middle part falls into the effective display area 201 Inside, the left and right sides fall into the non-effective display area 202 Inside, the two barrier walls 40 Located in the bending zone 100 The left and right sides fall into the inactive display area 202 Within the two areas.
  • the flexible OLED The display panel can be along the bending area 100 Bend up and down to make two non-bent areas 101 Forming an angle while in the bending zone 100 Side of the barrier wall 40 Completely blocked the invasion path of water and oxygen, improving flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.
  • the flexible OLED The display panel can be along two preset bending zones 100 Bend once, the barrier wall 40 The number is four, and each bending zone 100 There is a barrier wall at each end 40 .
  • the flexible OLED The display panel is divided into two spaced-apart bending areas 100 And located in two bending zones 100 The two non-bending areas on the left and right sides of 101 And two bending zones 100 Non-bending zone 101 , The bending zone 100 Of the middle part falls into the effective display area 201 Inside, the upper and lower sides fall into the ineffective display area 202 Inside, the four barrier walls 40 Located in the two bending zones 100 The upper and lower sides fall into the ineffective display area 202 Within the four areas.
  • the flexible OLED The display panel can be along the bending area 100 Bend left and right to make the flexibility OLED
  • the display panel is bent into a " ⁇ " shape, in the bending area 100
  • Side of the barrier wall 40 Completely blocked the invasion path of water and oxygen, improving flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.
  • the barrier wall 40 The material is a particulate matter capable of absorbing water and oxygen, such as a combination of a polymer and a water-absorbing nanoparticle.
  • the polymer is one or more of acrylic, polyethylene and polycarbonate materials
  • the combination of the water-absorbing nanoparticles is one or a combination of calcium oxide and calcium chloride.
  • the barrier wall 40 Perpendicular to the first inorganic layer 30 The thickness in the direction of 1 ⁇ 3 ⁇ m .
  • the display layer 20 Including thin film transistor drive circuit layer twenty one And on the thin film transistor driver circuit layer twenty one Up OLED Device layer twenty two .
  • the first inorganic layer 30 And the second inorganic layer 60 The material is a combination of one or more of silicon nitride, silicon oxide and aluminum oxide.
  • the material of the organic layer is hexamethyldisiloxane, polyacrylate or polystyrene.
  • the organic layer 50 Is slightly thicker than the barrier wall 40 Thickness to ensure the organic layer 50 Capable of covering barrier walls 40 .
  • the first inorganic layer is formed by a chemical vapor deposition process 30
  • the second inorganic layer 60 is formed by spin coating or inkjet printing process 50 , Forming the barrier wall by spraying or inkjet printing process 40 .
  • the present invention provides a flexible OLED Display panel, including a flexible substrate, a display layer provided on the flexible substrate, a first inorganic layer provided on the display layer, and a barrier wall provided on the first inorganic layer to prevent water and oxygen from entering , An organic layer provided on the barrier wall and the first inorganic layer, and a second inorganic layer provided on the organic layer; the flexibility OLED
  • the display panel can be bent along a preset bending area, and the barrier wall is provided in the bending area and located in the OLED Outside the effective display area of the display panel, by adding a barrier wall in the bending area, the flexibility can be enhanced OLED Water and oxygen barrier capacity at the bend of the display panel to improve flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.
  • the invention also provides a flexibility OLED Manufacturing method of display panel can enhance flexibility OLED Water and oxygen barrier capacity at the bend of the display panel to improve flexibility OLED The life of the display panel, to avoid poor display caused by cracks in the bend.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

本发明提供了一种柔性OLED显示面板及其制作方法。所述柔性OLED显示面板包括柔性基底、设于所述柔性基底上的显示层、设于所述显示层上的第一无机层、设于所述第一无机层上的用于防止水氧侵入的阻隔墙、设于所述阻隔墙及第一无机层上的有机层以及设于有机层上的第二无机层；所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙设于所述弯折区内，且位于所述OLED显示面板的有效显示区外，通过在弯折区增设阻隔墙，能够增强柔性OLED显示面板弯折处的水氧阻隔能力，提升柔性OLED显示面板的寿命，避免因弯折处裂纹导致的显示不良。

Description

柔性OLED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，尤其涉及一种柔性OLED显示面板及其制作方法。
 背景技术
平面显示器件具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。现有的平面显示器件主要包括液晶显示器件（Liquid Crystal Display，LCD）及有机发光二极管显示器件（Organic Light Emitting Display，OLED）。
有机发光二极管显示器件由于同时具备自发光，不需背光源、对比度高、厚度薄、视角广、反应速度快、可用于挠曲性面板、使用温度范围广、构造及制程较简单等优异特性，被认为是下一代平面显示器的新兴应用技术。有机发光二极管显示器件通常包括：基板、设于基板上的阳极、设于阳极上的有机发光层，设于有机发光层上的电子传输层、及设于电子传输层上的阴极。工作时向有机发光层发射来自阳极的空穴和来自阴极的电子，将这些电子和空穴组合产生激发性电子-空穴对，并将激发性电子-空穴对从受激态转换为基态实现发光。
柔性OLED面板是OLED显示器件的重要研究方向，其采用柔性衬底替代传统的玻璃基板以实现面板的可弯曲性，给消费者带来了颠覆性的概念，能够提升用户体验，增强产品竞争力。近年来，柔性OLED有机发光器件显示技术飞速发展，各地方柔性量产项目持续投产，与传统的玻璃刚性显示器件相比，柔性显示器件有耐冲击、抗震能力强，重量轻、体积小甚至可穿戴等一系列优势。
但是目前柔性OLED显示面板技术还不够成熟，在弯折半径、可靠性及产品量产性方面还存在很多问题，制约了柔性OLED显示面板的发展，特别是现有柔性显示器件为了保障弯折性能，广泛使用的是薄膜类柔性显示基板，但这类柔性OLED显示面板在保障显示器件的寿命仍有一些困难需要克服，主要问题在于当柔性OLED显示面板弯折时，其弯曲处容易出现裂纹被水氧渗透，造成产品性能下降，产品寿命缩短。
 技术问题
本发明的目的在于提供一种柔性OLED显示面板，能够增强柔性OLED显示面板弯折处的水氧阻隔能力，提升柔性OLED显示面板的寿命，避免因弯折处裂纹导致的显示不良。
本发明的目的还在于提供一种柔性OLED显示面板的制作方法，能够增强柔性OLED显示面板弯折处的水氧阻隔能力，提升柔性OLED显示面板的寿命，避免因弯折处裂纹导致的显示不良。
 技术解决方案
为实现上述目的，本发明提供了一种柔性OLED显示面板，包括柔性基底、设于所述柔性基底上的显示层、设于所述显示层上的第一无机层、设于所述第一无机层上的用于防止水氧侵入的阻隔墙、设于所述阻隔墙及第一无机层上的有机层以及设于有机层上的第二无机层；
所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙设于所述弯折区内，且位于所述柔性OLED显示面板的有效显示区外。
所述柔性OLED显示面板能够沿预设的一个弯折区进行一次弯折，所述阻隔墙的数量为两个，分设于该弯折区的两端。
所述柔性OLED显示面板能够沿预设的两个相互间隔的弯折区进行两次弯折，所述阻隔墙的数量为四个，每一个弯折区的两端分别设有一个阻隔墙。
所述阻隔墙的材料为高分子聚合物与吸水纳米颗粒的组合。
所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
本发明还提供一种柔性OLED显示面板的制作方法，包括如下步骤：
步骤S1、提供一柔性基底，在所述柔性基底上形成显示层；
步骤S2、在所述显示层上形成第一无机层；
步骤S3、在所述第一无机层上形成阻隔墙；
步骤S4、在所述阻隔墙及第一无机层上形成有机层，在所述有机层上形成第二无机层，得到柔性OLED显示面板；
所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙形成于所述弯折区内，且位于所述柔性OLED显示面板的有效显示区外。
所述柔性OLED显示面板能够沿预设的一个弯折区进行一次弯折，所述阻隔墙的数量为两个，分设于该弯折区的两端。
所述柔性OLED显示面板能够沿预设的两个相互间隔的弯折区进行两次弯折，所述阻隔墙的数量为四个，每一个弯折区的两端分别设有一个阻隔墙。
所述阻隔墙的材料为高分子聚合物与吸水纳米颗粒的组合；
所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
通过化学气相沉积工艺形成所述第一无机层和第二无机层，通过旋涂或喷墨打印工艺形成所述有机层，通过喷涂或喷墨打印工艺形成所述阻隔墙。
 有益效果
本发明的有益效果：本发明提供了一种柔性OLED显示面板，包括柔性基底、设于所述柔性基底上的显示层、设于所述显示层上的第一无机层、设于所述第一无机层上的用于防止水氧侵入的阻隔墙、设于所述阻隔墙及第一无机层上的有机层以及设于有机层上的第二无机层； 所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙设于所述弯折区内，且位于所述柔性OLED显示面板的有效显示区外，通过在弯折区增设阻隔墙，能够增强柔性OLED显示面板弯折处的水氧阻隔能力，提升柔性OLED显示面板的寿命，避免因弯折处裂纹导致的显示不良。本发明还提供一种柔性OLED显示面板的制作方法，能够增强柔性OLED显示面板弯折处的水氧阻隔能力，提升柔性OLED显示面板的寿命，避免因弯折处裂纹导致的显示不良。
 附图说明
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。
附图中，
图1为本发明的柔性OLED显示面板的第一实施例的俯视图；
图2为图1中A-A处的剖面图；
图3为本发明的柔性OLED显示面板的第一实施例在弯曲状态下的示意图
图4为本发明的柔性OLED显示面板的第二实施例的俯视图；。
图5为图4中B-B处的剖面图；
图6为本发明的柔性OLED显示面板的第二实施例在弯曲状态下的示意图；
图7为本发明的柔性OLED显示面板的的制作方法的流程图。
 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 至图 6 所示，本发明提供一种柔性 OLED 显示面板，包括柔性基底 10 、设于所述柔性基底 10 上的显示层 20 、设于所述显示层 20 上的第一无机层 30 、设于所述第一无机层 30 上的用于防止水氧侵入的阻隔墙 40 、设于所述阻隔墙 40 及第一无机层 30 上的有机层 50 以及设于有机层 50 上的第二无机层 60 ；
所述柔性 OLED 显示面板能够沿预设的弯折区 100 进行弯折，所述阻隔墙 40 设于所述弯折区 100 内，且位于所述柔性 OLED 显示面板的有效显示区外。
具体地，所述弯折区 100 的位置及数量可以根据需要设置，所述阻隔墙 40 的位置及数量随着弯折区 100 的位置及数量的改变而改变。
具体地，如图 1 或图 4 所示，所述柔性 OLED 显示面板按照是否显示可划分为有效显示区 201 （ Active Area ， AA ）及包围所述有效显示区 101 的非有效显示区 202 ，而按照是否弯折，又可以划分为弯折区 100 及位于弯折区 100 以外的非弯折区 101 ，其中，所述弯折区 100 与非有效显示区 202 重叠的区域即为阻隔墙 40 所在的区域，且为了保证水氧阻隔效果，沿弯折区 100 的弯折方向，所述弯折区 100 的长度等于所述阻隔墙 40 的长度，从而在弯折后，所述阻隔墙 40 能够完全阻挡从弯折区 100 的渗入的水汽。
具体地，如图 1 所示，所述柔性 OLED 显示面板能够沿预设的一个弯折区 100 进行一次弯折，所述阻隔墙 40 的数量为两个，分设于该弯折区 100 的两端。
进一步地，在本发明的第一实施例中，按照是否弯折，所述柔性 OLED 显示面板被划分为弯折区 100 及分别位于弯折区 100 的上下两侧的两非弯折区 101 ，所述弯折区 100 的中间部分落入有效显示区 201 内，左右两侧落入非有效显示区 202 内，所述两个阻隔墙 40 分别位于所述弯折区 100 左右两侧落入非有效显示区 202 内的两个区域中。
如图 3 所示，在本发明的第一实施例中，所述柔性 OLED 显示面板能够沿弯折区 100 上下弯折，使得两个非弯折区 101 形成一夹角，而在弯折区 100 的侧面，阻隔墙 40 完全阻挡了水氧的入侵路径，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。
具体地，如图 4 所示，所述柔性 OLED 显示面板能够沿预设的两个弯折区 100 进行一次弯折，所述阻隔墙 40 的数量为四个，每一个弯折区 100 的两端分别设有一个阻隔墙 40 。
进一步地，在本发明的第二实施例中，按照是否弯折，所述柔性 OLED 显示面板被划分为两个间隔排列的弯折区 100 及分别位于两个弯折区 100 的左右两侧的两非弯折区 101 以及两个弯折区 100 之间的一个非弯折区 101 ，所述弯折区 100 的中间部分落入有效显示区 201 内，上下两侧落入非有效显示区 202 内，所述四个阻隔墙 40 分别位于所述两个弯折区 100 上下两侧落入非有效显示区 202 内的四个区域中。
如图 6 所示，在本发明的第二实施例中，所述柔性 OLED 显示面板能够沿弯折区 100 左右弯折，使得所述柔性 OLED 显示面板弯曲成“Π”字型，在弯折区 100 的侧面，阻隔墙 40 完全阻挡了水氧的入侵路径，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。
具体地，所述阻隔墙 40 的材料为能够吸收水氧的颗粒物，例如高分子聚合物与吸水纳米颗粒的组合，优选地，所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
具体地，所述阻隔墙 40 垂直于第一无机层 30 的方向上的厚度为 1~3 μ m 。
具体地，所述显示层 20 包括薄膜晶体管驱动电路层 21 及位于薄膜晶体管驱动电路层 21 上的 OLED 器件层 22 。
具体地，所述第一无机层 30 及第二无机层 60 的材料为氮化硅、氧化硅和氧化铝中的一种或多种的组合。
具体地，所述有机层的材料为六甲基二硅醚类、聚丙烯酸酯类或聚苯乙烯类物质，所述有机层 50 的厚度略大于阻隔墙 40 的厚度，以保证有机层 50 能够覆盖阻隔墙 40 。
请参阅图 7 ，本发明还提供一种柔性 OLED 显示面板的制作方法，包括如下步骤：
步骤 S1 、提供一柔性基底 10 ，在所述柔性基底 10 上形成显示层 20 ；
步骤 S2 、在所述显示层 20 上形成第一无机层 30 ；
步骤 S3 、在所述第一无机层 30 上形成阻隔墙 40 ；
步骤 S4 、在所述阻隔墙 40 及第一无机层 30 上形成有机层 50 ，在所述有机层 50 上形成第二无机层 60 ，得到柔性 OLED 显示面板；
所述柔性 OLED 显示面板能够沿预设的弯折区 100 进行弯折，所述阻隔墙 40 形成于所述弯折区 100 内，且位于所述柔性 OLED 显示面板的有效显示区外。
具体地，所述弯折区 100 的位置及数量可以根据需要设置，所述阻隔墙 40 的位置及数量随着弯折区 100 的位置及数量的改变而改变。
具体地，如图 1 或图 4 所示，所述柔性 OLED 显示面板按照是否显示可划分为有效显示区 201 （ Active Area ， AA ）及包围所述有效显示区 101 的非有效显示区 202 ，而按照是否弯折，又可以划分为弯折区 100 及位于弯折区 100 以外的非弯折区 101 ，其中，所述弯折区 100 与非有效显示区 202 重叠的区域即为阻隔墙 40 所在的区域，且为了保证水氧阻隔效果，沿弯折区 100 的弯折方向，所述弯折区 100 的长度等于所述阻隔墙 40 的长度，从而在弯折后，所述阻隔墙 40 能够完全阻挡从弯折区 100 的渗入的水汽。
具体地，如图 1 所示，所述柔性 OLED 显示面板能够沿预设的一个弯折区 100 进行一次弯折，所述阻隔墙 40 的数量为两个，分设于该弯折区 100 的两端。
进一步地，在本发明的第一实施例中，按照是否弯折，所述柔性 OLED 显示面板被划分为弯折区 100 及分别位于弯折区 100 的上下两侧的两非弯折区 101 ，所述弯折区 100 的中间部分落入有效显示区 201 内，左右两侧落入非有效显示区 202 内，所述两个阻隔墙 40 分别位于所述弯折区 100 左右两侧落入非有效显示区 202 内的两个区域中。
如图 3 所示，在本发明的第一实施例中，所述柔性 OLED 显示面板能够沿弯折区 100 上下弯折，使得两个非弯折区 101 形成一夹角，而在弯折区 100 的侧面，阻隔墙 40 完全阻挡了水氧的入侵路径，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。
具体地，如图 4 所示，所述柔性 OLED 显示面板能够沿预设的两个弯折区 100 进行一次弯折，所述阻隔墙 40 的数量为四个，每一个弯折区 100 的两端分别设有一个阻隔墙 40 。
进一步地，在本发明的第二实施例中，按照是否弯折，所述柔性 OLED 显示面板被划分为两个间隔排列的弯折区 100 及分别位于两个弯折区 100 的左右两侧的两非弯折区 101 以及两个弯折区 100 之间的一个非弯折区 101 ，所述弯折区 100 的中间部分落入有效显示区 201 内，上下两侧落入非有效显示区 202 内，所述四个阻隔墙 40 分别位于所述两个弯折区 100 上下两侧落入非有效显示区 202 内的四个区域中。
如图 6 所示，在本发明的第二实施例中，所述柔性 OLED 显示面板能够沿弯折区 100 左右弯折，使得所述柔性 OLED 显示面板弯曲成“Π”字型，在弯折区 100 的侧面，阻隔墙 40 完全阻挡了水氧的入侵路径，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。
具体地，所述阻隔墙 40 的材料为能够吸收水氧的颗粒物，例如高分子聚合物与吸水纳米颗粒的组合，优选地，所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
具体地，所述阻隔墙 40 垂直于第一无机层 30 的方向上的厚度为 1~3 μ m 。
具体地，所述显示层 20 包括薄膜晶体管驱动电路层 21 及位于薄膜晶体管驱动电路层 21 上的 OLED 器件层 22 。
具体地，所述第一无机层 30 及第二无机层 60 的材料为氮化硅、氧化硅和氧化铝中的一种或多种的组合。
具体地，所述有机层的材料为六甲基二硅醚类、聚丙烯酸酯类或聚苯乙烯类物质，所述有机层 50 的厚度略大于阻隔墙 40 的厚度，以保证有机层 50 能够覆盖阻隔墙 40 。
具体地，通过化学气相沉积工艺形成所述第一无机层 30 和第二无机层 60 ，通过旋涂或喷墨打印工艺形成所述有机层 50 ，通过喷涂或喷墨打印工艺形成所述阻隔墙 40 。
综上所述，本发明提供了一种柔性 OLED 显示面板，包括柔性基底、设于所述柔性基底上的显示层、设于所述显示层上的第一无机层、设于所述第一无机层上的用于防止水氧侵入的阻隔墙、设于所述阻隔墙及第一无机层上的有机层以及设于有机层上的第二无机层；所述柔性 OLED 显示面板能够沿预设的弯折区进行弯折，所述阻隔墙设于所述弯折区内，且位于所述 OLED 显示面板的有效显示区外，通过在弯折区增设阻隔墙，能够增强柔性 OLED 显示面板弯折处的水氧阻隔能力，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。本发明还提供一种柔性 OLED 显示面板的制作方法，能够增强柔性 OLED 显示面板弯折处的水氧阻隔能力，提升柔性 OLED 显示面板的寿命，避免因弯折处裂纹导致的显示不良。
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 (10)

  1. 一种柔性OLED显示面板，包括柔性基底、设于所述柔性基底上的显示层、设于所述显示层上的第一无机层、设于所述第一无机层上的用于防止水氧侵入的阻隔墙、设于所述阻隔墙及第一无机层上的有机层以及设于有机层上的第二无机层；
    所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙设于所述弯折区内，且位于所述柔性OLED显示面板的有效显示区外。
  2. 如权利要求1所述的柔性OLED显示面板，能够沿预设的一个弯折区进行一次弯折，所述阻隔墙的数量为两个，分设于该弯折区的两端。
  3. 如权利要求1所述的柔性OLED显示面板，能够沿预设的两个相互间隔的弯折区进行两次弯折，所述阻隔墙的数量为四个，每一个弯折区的两端分别设有一个阻隔墙。
  4. 如权利要求1所述的柔性OLED显示面板，其中，所述阻隔墙的材料为高分子聚合物与吸水纳米颗粒的组合。
  5. 如权利要求4所述的柔性OLED显示面板，其中，所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
  6. 一种柔性OLED显示面板的制作方法，包括如下步骤：
    步骤S1、提供一柔性基底，在所述柔性基底上形成显示层；
    步骤S2、在所述显示层上形成第一无机层；
    步骤S3、在所述第一无机层上形成阻隔墙；
    步骤S4、在所述阻隔墙及第一无机层上形成有机层，在所述有机层上形成第二无机层，得到柔性OLED显示面板；
    所述柔性OLED显示面板能够沿预设的弯折区进行弯折，所述阻隔墙形成于所述弯折区内，且位于所述柔性OLED显示面板的有效显示区外。
  7. 如权利要求6所述的柔性OLED显示面板的制作方法，其中，所述柔性OLED显示面板能够沿预设的一个弯折区进行一次弯折，所述阻隔墙的数量为两个，分设于该弯折区的两端。
  8. 如权利要求6所述的柔性OLED显示面板的制作方法，其中，所述柔性OLED显示面板能够沿预设的两个相互间隔的弯折区进行两次弯折，所述阻隔墙的数量为四个，每一个弯折区的两端分别设有一个阻隔墙。
  9. 如权利要求6所述的柔性OLED显示面板的制作方法，其中，所述阻隔墙的材料为高分子聚合物与吸水纳米颗粒的组合；
    所述高分子聚合物为亚克力、聚乙烯类和聚碳酸酯类物质中的一种或多种的组合；所述吸水纳米颗粒为氧化钙和氯化钙中的一种或二者的组合。
  10. 如权利要求6所述的柔性OLED显示面板的制作方法，其中，通过化学气相沉积工艺形成所述第一无机层和第二无机层，通过旋涂或喷墨打印工艺形成所述有机层，通过喷涂或喷墨打印工艺形成所述阻隔墙。
     
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