WO2020232805A1 - 基于喷墨打印技术的有机发光显示装置及其制作方法 - Google Patents

基于喷墨打印技术的有机发光显示装置及其制作方法 Download PDF

Info

Publication number
WO2020232805A1
WO2020232805A1 PCT/CN2019/095179 CN2019095179W WO2020232805A1 WO 2020232805 A1 WO2020232805 A1 WO 2020232805A1 CN 2019095179 W CN2019095179 W CN 2019095179W WO 2020232805 A1 WO2020232805 A1 WO 2020232805A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
organic light
bedding
display device
emitting display
Prior art date
Application number
PCT/CN2019/095179
Other languages
English (en)
French (fr)
Inventor
刘华龙
吴聪原
Original Assignee
深圳市华星光电半导体显示技术有限公司
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 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Publication of WO2020232805A1 publication Critical patent/WO2020232805A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0023—Digital printing methods characterised by the inks used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0058—Digital printing on surfaces other than ordinary paper on metals and oxidised metal surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/007—Digital printing on surfaces other than ordinary paper on glass, ceramic, tiles, concrete, stones, etc.
    • 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
    • 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

Definitions

  • the present invention relates to the field of display technology, and in particular to an organic light emitting display device based on inkjet printing technology and a manufacturing method thereof.
  • OLEDs Organic light emitting diodes
  • the main methods of preparing OLED devices are evaporation method and printing method.
  • the technology for preparing OLED display devices of various sizes using the full evaporation method is quite mature relative to the printing technology, and has been used in commercial production.
  • the full-evaporation technology has the problem of low material utilization and difficult to be used to prepare high-resolution devices.
  • the material utilization rate of the display device prepared by printing technology is as high as 90%, and the cost of preparing the display device is about 17% lower than that of the full evaporation technology.
  • the printing process does not require a mask, which can be used for the preparation of high-resolution display devices. Therefore, the preparation of large-size, high-resolution OLED devices is now a research hotspot in the display field.
  • the traditional printing technology has the following problems: the printing process is to prepare the pixel bank (photoresist material) after indium tin oxide (ITO) is patterned, the ITO at the bottom is a hydrophilic material, and the surrounding Bank is a hydrophobic substance.
  • ITO indium tin oxide
  • the surrounding Bank is a hydrophobic substance.
  • the purpose of the present invention is to provide an organic light-emitting display device based on inkjet printing technology and a manufacturing method thereof, which can change the surface of the functional area of the pixel unit, and the surface characteristics of organic residues and particulate foreign matter caused by the manufacturing process. Furthermore, the spreadability of the printing ink on the surface of the functional area is improved.
  • the present invention provides an organic light emitting display device based on inkjet printing technology, including: a substrate; a metal layer provided on the substrate; a pixel bank layer provided on the substrate and part of the metal layer And includes a plurality of dykes arranged at intervals, and there is a functional area between the plurality of dykes and the metal layer; a bedding layer is arranged on the metal layer and exposed to the functional area, and The bedding layer includes an organic solvent substance; and a functional film layer, which is arranged on the bedding layer and located in the functional area.
  • the bedding layer completely covers the metal layer and extends a predetermined distance along the surface of the plurality of dams facing the functional area.
  • the bedding layer extends to a predetermined distance of the plurality of jetties, which is higher than or equal to the height of the functional film layer in the functional area.
  • the bedding layer has a thickness of nanometer level
  • the metal layer is made of indium tin oxide.
  • the organic solvent substance of the bedding layer and the ink used in the printing technology are the same kind of organic substance or the same substance.
  • the functional film layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, and a cathode layer.
  • the present invention also provides a method for manufacturing an organic light-emitting display device, including: forming a metal layer on a substrate; forming a pixel bank layer on the substrate and part of the metal layer by inkjet printing technology, wherein the pixel bank layer A bedding layer is formed on the metal layer by ink-jet printing technology using organic solvents, and a bedding layer is formed on the metal layer, which is exposed to the metal layer. Functional area; and forming a functional film layer on the bedding layer by inkjet printing technology.
  • the bedding layer including the organic solvent is formed by the inkjet printing technology, and after the functional film layer is formed in the functional area, it is further dried by natural drying, air extraction, and Or a drying method of heating and drying completes the preparation of the bedding layer and the functional film layer.
  • the bedding layer completely covers the metal layer and extends a predetermined distance along the surface of the plurality of dams facing the functional area.
  • the bedding layer extends to a predetermined distance of the plurality of jetties, which is higher than or equal to the height of the functional film layer in the functional area.
  • the present invention also provides an organic light-emitting display device based on inkjet printing technology, including: a substrate; a metal layer provided on the substrate; a pixel bank layer provided on the substrate and part of the metal layer and including A plurality of jetties arranged at intervals, and there is a functional area between the plurality of jetties and the metal layer; a bedding layer is provided on the metal layer and exposed to the functional area, and the bedding layer includes An organic solvent substance; and a functional film layer disposed on the bedding layer and located in the functional area; wherein the bedding layer completely covers the metal layer and faces the functional area along the plurality of dams
  • the surface extends a predetermined distance, and the organic solvent substance of the bedding layer and the ink used in the printing technology are the same kind of organic substance or the same substance.
  • the bedding layer extends to a predetermined distance of the plurality of jetties, which is higher than or equal to the height of the functional film layer in the functional area.
  • the bedding layer has a thickness of nanometer level
  • the metal layer is made of indium tin oxide.
  • the functional film layer includes a hole injection layer, a hole transport layer, an organic light-emitting layer, and a cathode layer.
  • the advantage of the organic light-emitting display device based on inkjet printing technology of the present invention is that by printing on the metal layer a bedding layer of an organic solvent substance with the same hydrophilicity and hydrophobicity as the surface of the functional film layer, it can change the hydrophobicity.
  • the surface characteristics of organic residues and particulate foreign matter make it appear similar to the surface characteristics of the printed functional film, thereby improving the spreadability of the ink on the surface of the functional area, and improving the uniformity of light emission of the functional area, effectively solving the traditional
  • the ink printed by inkjet printing has the problem of uneven spreading due to hydrophobic organic residues and particulate foreign matter.
  • FIG. 1 is a schematic structural diagram of an organic light emitting display device based on inkjet printing technology according to a preferred embodiment of the present invention.
  • 2A-2E are exploded schematic diagrams of the organic light emitting display device of FIG. 1 and used to illustrate the manufacturing process thereof.
  • FIG. 3 is a flowchart of a method of manufacturing the organic light emitting display device of the present invention.
  • FIG. 1 is a schematic structural diagram of an organic light-emitting display device based on inkjet printing technology according to a preferred embodiment of the present invention.
  • the organic light-emitting display device shown in FIG. 1 is only schematically represented by a single pixel unit, and the organic light-emitting display device of the present invention
  • the light-emitting display device is composed of a plurality of pixel units.
  • 2A-2C are exploded schematic diagrams of the organic light emitting display device of FIG. 1 and used to illustrate the manufacturing process thereof. Please refer to Figure 1 and cooperate with Figure 2A-2D to view it.
  • the organic light emitting display device 1 based on inkjet printing technology of the present invention includes a substrate 2, a metal layer 21, a pixel bank layer 3, a bedding layer 4 and a functional film layer 5.
  • the substrate 2 may be a glass substrate, and the metal layer 21 is provided on the substrate 2, wherein the metal layer 21 is made of indium tin oxide (ITO), and its function For anode metal.
  • the pixel bank layer 3 is formed on the substrate 2 and part of the metal layer 21 by inkjet printing (IJP) technology. Specifically, the pixel bank layer 3 is patterned to include a plurality of banks 31 spaced apart from each other, and a functional area 10 is formed between the plurality of banks 31 and the metal layer 21.
  • the pixel bank layer 3 can be made of photoresist material. Specifically, the plurality of dams 31 protrude from the substrate 2, and the plurality of dams 31 face the surface of the functional area 10, and respectively incline toward the outside of the functional area 10, so that the functional area 10 is The upper presents an inverted trapezoid. In this embodiment, the height of each bank 31 is 1-2 micrometers (um).
  • the bedding layer 4 is disposed on the metal layer 21 and exposed in the functional area 10, and the bedding layer 4 includes an organic solvent substance.
  • the bedding layer 4 is formed on the metal layer 21 by an inkjet printing technology using an organic solvent, which has a thickness of nanometer level.
  • the bedding layer 4 completely covers the metal layer 21, and extends a predetermined distance along the surface of the plurality of dams 31 facing the functional area 10; that is, the bedding layer 4 Covering the plurality of dams 31 is located on the surface of the functional area 10 and forms an extended sidewall 41 which covers the corners formed by the dams 31 and the metal layer 21.
  • the preparation of the bedding layer 4 is completed by a drying method such as natural drying, suction drying, or heating and drying.
  • the ITO metal layer 21 and the side edges of the plurality of dams 31 form the same solvent environment as the printing ink. That is, in this preferred embodiment, the organic solvent substance of the bedding layer 4 and the ink used in the printing technology are the same kind of organic substance or the same substance.
  • the bedding layer 4 of the organic solvent is the same material of the ink used for printing, for example, pure solvents used to prepare inks of different concentrations, which are hydrophilic substances.
  • the functional film layer 5 is disposed on the bedding layer 4 and is located in the functional area 10.
  • the functional film layer 5 is formed on the bedding layer 4 by inkjet printing technology.
  • the height of the extension sidewall 41 relative to the functional area 10 is higher than or equal to the height of the functional film layer 5 in the functional area 10.
  • its opposite sides are inclined outwardly and form an obtuse angle with the metal layer 21, so that the printing ink can be sprayed onto the bedding layer 4 in the functional area 10 reliably.
  • the printing ink used is a certain ratio of solute and solvent, which will not have compatibility problems with the organic solvent substance of the bedding layer 4, and has the same spreadability on the anode metal. It will affect the spreadability of subsequent printing inks.
  • the preparation of the functional film layer 5 is completed by a drying method such as natural drying, suction drying, or heating and drying.
  • the functional film layer 5 includes a hole injection layer 51, a hole transport layer 52, an organic light emitting layer 53, an electron injection layer 54, an electron transport layer 55 and a cathode layer 56.
  • FIG. 3 is a flowchart of a method of manufacturing the organic light emitting display device of the present invention.
  • the manufacturing method of the organic light emitting display device of the present invention includes steps S10-S40, which are detailed as follows.
  • Step S10 forming a metal layer on the substrate, and the metal layer is made of indium tin oxide.
  • Step S20 forming a pixel bank layer on the substrate and part of the metal layer by inkjet printing technology, wherein the pixel bank layer includes a plurality of mutually spaced apart banks through a patterning process, and the plurality of bank and Functional regions are formed between the metal layers.
  • Step S30 Form a bedding layer on the metal layer by using an organic solvent inkjet printing technology, which is exposed to the functional area, wherein the organic solvent substance and the ink used in the printing technology are the same type of organic matter or The same substance.
  • Step S40 forming a functional film layer on the bedding layer by inkjet printing technology, wherein the bedding layer completely covers the metal layer and extends a predetermined distance along the surface of the plurality of dams facing the functional area.
  • organic light-emitting display device In the manufacturing process of an organic light-emitting display device based on inkjet printing technology, after the functional area is developed and patterned, there may be hydrophobic organic residues, or particulate matter may be introduced during the device manufacturing process, which may cause subsequent inkjet printing.
  • the printed ink has uneven spreading.
  • the organic light-emitting display device of the present invention can change the surface characteristics of hydrophobic organic residues and particulate foreign matter by printing on the metal layer a bedding layer of an organic solvent substance with the same hydrophilicity and hydrophobicity as the surface of the functional film layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种基于喷墨打印技术的有机发光显示装置及其制作方法，有机发光显示装置包括基板（2）、金属层（21）、像素堤层（3）、铺垫层（4）及功能膜层（5），金属层（21）设于基板（2）上，像素堤层设于基板（2）和部分金属层（21）上，并包括复数个相互间隔排列的突堤（31），且复数突堤（31）和金属层（21）之间具有功能区（10），铺垫层（4）设于金属层（21）上，并曝露于功能区（10）内，且铺垫层（4）包括有机溶剂物质，功能膜层（5）设于铺垫层（4）上，并位于功能区（10）内。

Description

基于喷墨打印技术的有机发光显示装置及其制作方法 技术领域
本发明涉及显示技术领域，特别是涉及一种基于喷墨打印技术的有机发光显示装置及其制作方法。
 背景技术
有机发光器件(organic light emitting diode, OLED)以其良好的自发光特性、高的对比度、快速响应等优势，在显示领域、照明领域以及智能穿戴领域等都得到了广泛的应用。
制备OLED器件的主要方法有蒸镀法和打印法两种。现今利用全蒸镀方法制备各种尺寸的OLED显示器件的技术，相对于打印技术来说已相当成熟，且已经用于商业化生产。但全蒸镀技术存在材料利用率低，难用于制备高分辨率的器件的问题。打印技术制备显示器件的材料利用率高达90%以上，其制备显示器件的成本较全蒸镀技术低17%左右。此外，打印过程中无需掩模板，可用于高分辨率显示器件的制备。所以制备出大尺寸、高分辨率的OLED器件是现在显示领域的研究热点。然而，传统打印技术存在如下的问题：打印制程是在氧化铟锡(indium tin oxide, ITO)图形化后制备像素堤层（bank，为光阻物质），底部的ITO为亲水性物质，周围bank为疏水性物质。但在打印过程中发现，ITO表面有部分打印材料铺展不开，且个别像素内有微米级的异物颗粒，因此造成干燥后的膜层出现边缘和异物处无功能膜覆盖，从而引起器件在发光时，出现发光不均，亮点或暗点的亮度不均匀(mura)问题。
 技术问题
本发明的目的在于提供一种基于喷墨打印技术的有机发光显示装置及其制作方法，其可改变像素单元的功能区的表面，因为制备过程而造成的有机残余物及微粒异物的表面特性，进而提高打印墨水在所述功能区表面的铺展性。
 技术解决方案
为实现上述目的，本发明提供一种基于喷墨打印技术的有机发光显示装置，包括：基板；金属层，设于所述基板上；像素堤层，设于所述基板和部分所述金属层上，并包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间具有功能区；铺垫层，设于所述金属层上，并曝露于所述功能区内，且所述铺垫层包括有机溶剂物质；以及功能膜层，设于所述铺垫层上，并位于所述功能区内。
依据本发明的一实施例，所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离。
依据本发明的另一实施例，所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
依据本发明的另一实施例，所述铺垫层具有纳米等级的厚度，且所述金属层为氧化铟锡所制。
依据本发明的另一实施例，所述铺垫层的有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。
依据本发明的另一实施例，所述功能膜层包括空穴注入层、空穴传输层、有机发光层及阴极层。
本发明另外提供一种制作有机发光显示装置的方法，包括：在基板上形成金属层；通过喷墨打印技术在所述基板及部分所述金属层上形成像素堤层，其中所述像素堤层包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间形成有功能区；通过采用有机溶剂的喷墨打印技术在所述金属层上形成铺垫层，其曝露于所述功能区；以及通过喷墨打印技术在所述铺垫层上形成功能膜层。
依据本发明的一实施例，在以喷墨打印技术形成包括所述有机溶剂的铺垫层后，与形成于位于所述功能区内的功能膜层后，更分别通过自然干燥、抽气干燥、或加温干燥的干燥方法完成所述铺垫层及所述功能膜层的制备。
依据本发明的另一实施例，所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离。
依据本发明的另一实施例，所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
本发明另外提供一种基于喷墨打印技术的有机发光显示装置，包括：基板；金属层，设于所述基板上；像素堤层，设于所述基板和部分所述金属层上，并包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间具有功能区；铺垫层，设于所述金属层上，并曝露于所述功能区内，且所述铺垫层包括有机溶剂物质；以及功能膜层，设于所述铺垫层上，并位于所述功能区内；其中所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离，且所述铺垫层的有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。
依据本发明的另一实施例，所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
依据本发明的另一实施例，所述铺垫层具有纳米等级的厚度，且所述金属层为氧化铟锡所制。
依据本发明的另一实施例，所述功能膜层包括空穴注入层、空穴传输层、有机发光层及阴极层。
 有益效果
本发明基于喷墨打印技术的有机发光显示装置的优点在于：通过在所述金属层上打印一层与所述功能膜层表面亲疏水性相同的有机溶剂物质的铺垫层，其可改变疏水性的有机残余物和微粒异物的表面特性，使其呈现与打印功能膜层相似的表面特性，进而改善墨水在所述功能区的表面铺展性，并提升所述功能区的发光均匀性，有效解决传统喷墨打印出的墨水，因为疏水性的有机残余物质和微粒异物造成铺展不均的问题。
 附图说明
图1为根据本发明一较佳实施例的基于喷墨打印技术的有机发光显示装置的结构示意图。
图2A-图2E为图1的有机发光显示装置的分解示意图，并用以说明其制作过程。
图3为制作本发明的有机发光显示装置的方法的流程图。
 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。
本发明为一种基于喷墨打印技术的有机发光显示装置。图1为根据本发明一较佳实施例的基于喷墨打印技术的有机发光显示装置的结构示意图，其中图1所示的有机发光显示装置仅以单一像素单元为示意表示，而本发明的有机发光显示装置由多个像素单元构成。图2A-图2C为图1的有机发光显示装置的分解示意图，并用以说明其制作过程。请参阅图1并配合图2A-图2D观之。
如图1所示，本发明基于喷墨打印技术的有机发光显示装置1包括基板2、金属层21、像素堤层3、铺垫层4及功能膜层5。请参阅图2A，所述基板2可为玻璃基板，而所述金属层21设于所述基板2上，其中所述金属层21为氧化铟锡(indium tin oxide, ITO)所制，其作用为阳极金属。通过喷墨打印(inkjet printing, IJP)技术在所述基板2及部分所述金属层21上形成像素堤层3。具体而言，所述像素堤层3经过图形化而包括复数个相互间隔排列的突堤(bank)31，且所述复数突堤31和所述金属层21之间形成有功能区10。所述像素堤层3可为光阻材料所制。特别说明的是，所述复数突堤31突出于所述基板2，且所述复数突堤31面向所述功能区10的表面，分别朝所述功能区10外倾斜，使所述功能区10在断面上呈现倒梯形。于此实施例中，每一突堤31的高度为1-2微米(um)。
如图2B所示，所述铺垫层4设于所述金属层21上，并曝露于所述功能区10内，且所述铺垫层4包括有机溶剂物质。具体而言，通过采用有机溶剂的喷墨打印技术在所述金属层21上形成所述铺垫层4，其具有纳米等级的厚度。于此较佳实施例中，所述铺垫层4完整覆盖所述金属层21，并沿着所述复数突堤31面向所述功能区10的表面延伸一预定距离；亦即，所述铺垫层4覆盖所述复数突堤31位于所述功能区10的表面，并形成延伸侧壁41，其遮盖所述突堤31和所述金属层21构成的边角。
如图2C所示，在以喷墨打印技术形成包括所述有机溶剂的铺垫层4后，更通过自然干燥、抽气干燥、或加温干燥的干燥方法完成所述铺垫层4的制备，进而使所述ITO金属层21及所述复数突堤31的侧边缘形成与打印墨水相同的溶剂环境。亦即，于此较佳实施例中，所述铺垫层4的有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。具体而言，所述有机溶剂的铺垫层4为打印所用墨水的同种材料，例如，用来配备不同浓度墨水的纯溶剂，其为亲水性物质。
如图2D及图2E所示，所述功能膜层5设于所述铺垫层4上，并位于所述功能区10内。于此实施例中，通过喷墨打印技术在所述铺垫层4上形成功能膜层5。特别说明的是，所述延伸侧壁41相对于所述功能区10的高度，是高于或等于所述功能膜层5位于所述功能区10的高度。此时，配合所述倒梯形的功能区10，其相对二侧向外倾斜，并与所述金属层21形成钝角，打印墨水可以确实地喷涂到所述功能区10内的铺垫层4上。于此实施例中，所用打印墨水为一定的溶质和溶剂配比而成，其不会和所述铺垫层4的有机溶剂物质有相溶性问题，且在阳极层金属上的铺展性相同，不会影响后续打印墨水的铺展性。此外，在以喷墨打印技术形成所述功能膜层5后，更通过自然干燥、抽气干燥、或加温干燥的干燥方法完成所述功能膜层5的制备。
如图2E所示，所述功能膜层5包括空穴注入层51、空穴传输层52、有机发光层53、电子注入层54、电子传输层55及阴极层56。
图3为制作本发明的有机发光显示装置的方法的流程图。本发明有机发光显示装置的制作方法包括步骤S10-S40，其详述如下。
步骤S10：在基板上形成金属层，所述金属层为氧化铟锡所制。
步骤S20：通过喷墨打印技术在所述基板及部分所述金属层上形成像素堤层，其中所述像素堤层经由图形化工艺而包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间形成有功能区。
步骤S30：通过采用有机溶剂的喷墨打印技术在所述金属层上形成铺垫层，其曝露于所述功能区，其中所述有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。
步骤S40：通过喷墨打印技术在所述铺垫层上形成功能膜层，其中所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离。
所述有机发光显示装置的制作方法中，有关所述有机发光显示装置的各种构造元件与前述实施例的有机发光显示装置相同，于此不再复述。
基于喷墨打印技术的有机发光显示装置的制作过程中，所述功能区在显影图形化后，可能会存在疏水性的有机残余物质，或者在器件制备过程中引入微粒物质，进而造成后续喷墨打印出的墨水出现铺展不均问题。本发明的有机发光显示装置通过在所述金属层上打印一层与所述功能膜层表面亲疏水性相同的有机溶剂物质的铺垫层，其可改变疏水性的有机残余物和微粒异物的表面特性，使其呈现与打印功能膜层相似的表面特性，进而改善墨水在所述功能区的表面铺展性，并提升所述功能区的发光均匀性，有效解决传统喷墨打印出的墨水，因为疏水性的有机残余物质和微粒异物造成铺展不均的问题。
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. 一种基于喷墨打印技术的有机发光显示装置，包括：
    基板；
    金属层，设于所述基板上；
    像素堤层，设于所述基板和部分所述金属层上，并包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间具有功能区；
    铺垫层，设于所述金属层上，并曝露于所述功能区内，且所述铺垫层包括有机溶剂物质；以及
    功能膜层，设于所述铺垫层上，并位于所述功能区内。
  2. 如权利要求1的基于喷墨打印技术的有机发光显示装置，其中所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离。
  3. 如权利要求2的基于喷墨打印技术的有机发光显示装置，其中所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
  4. 如权利要求1的基于喷墨打印技术的有机发光显示装置，其中所述铺垫层具有纳米等级的厚度，且所述金属层为氧化铟锡所制。
  5. 如权利要求1的基于喷墨打印技术的有机发光显示装置，其中所述铺垫层的有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。
  6. 如权利要求1的基于喷墨打印技术的有机发光显示装置，其中所述功能膜层包括空穴注入层、空穴传输层、有机发光层及阴极层。
  7. 一种制作有机发光显示装置的方法，包括：
    在基板上形成金属层；
    通过喷墨打印技术在所述基板及部分所述金属层上形成像素堤层，其中所述像素堤层包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间形成有功能区；
    通过采用有机溶剂的喷墨打印技术在所述金属层上形成铺垫层，其曝露于所述功能区；以及
    通过喷墨打印技术在所述铺垫层上形成功能膜层。
  8. 如权利要求7的制作有机发光显示装置的方法，其中在以喷墨打印技术形成包括所述有机溶剂的铺垫层后，与形成于位于所述功能区内的功能膜层后，更分别通过自然干燥、抽气干燥、或加温干燥的干燥方法完成所述铺垫层及所述功能膜层的制备。
  9. 如权利要求7的制作有机发光显示装置的方法，其中所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离。
  10. 如权利要求9的制作有机发光显示装置的方法，其中所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
  11. 一种基于喷墨打印技术的有机发光显示装置，包括：
    基板；
    金属层，设于所述基板上；
    像素堤层，设于所述基板和部分所述金属层上，并包括复数个相互间隔排列的突堤，且所述复数突堤和所述金属层之间具有功能区；
    铺垫层，设于所述金属层上，并曝露于所述功能区内，且所述铺垫层包括有机溶剂物质；以及
    功能膜层，设于所述铺垫层上，并位于所述功能区内；
    其中所述铺垫层完整覆盖所述金属层，并沿着所述复数突堤面向所述功能区的表面延伸一预定距离，且所述铺垫层的有机溶剂物质与所述打印技术使用的墨水为相同类的有机物或同种物质。
  12. 如权利要求11的基于喷墨打印技术的有机发光显示装置，其中所述铺垫层延伸至所述复数突堤的预定距离，其高于或等于所述功能膜层位于所述功能区的高度。
  13. 如权利要求11的基于喷墨打印技术的有机发光显示装置，其特征在于，所述铺垫层具有纳米等级的厚度，且所述金属层为氧化铟锡所制。
  14. 如权利要求11的基于喷墨打印技术的有机发光显示装置，其中所述功能膜层包括空穴注入层、空穴传输层、有机发光层及阴极层。
PCT/CN2019/095179 2019-05-20 2019-07-09 基于喷墨打印技术的有机发光显示装置及其制作方法 WO2020232805A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910418890.0A CN110176477A (zh) 2019-05-20 2019-05-20 基于喷墨打印技术的有机发光显示装置及其制作方法
CN201910418890.0 2019-05-20

Publications (1)

Publication Number Publication Date
WO2020232805A1 true WO2020232805A1 (zh) 2020-11-26

Family

ID=67691735

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/095179 WO2020232805A1 (zh) 2019-05-20 2019-07-09 基于喷墨打印技术的有机发光显示装置及其制作方法

Country Status (2)

Country Link
CN (1) CN110176477A (zh)
WO (1) WO2020232805A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112319081A (zh) * 2019-12-12 2021-02-05 广东聚华印刷显示技术有限公司 喷墨打印方法、喷墨打印装置及发光器件
CN111129361B (zh) 2019-12-26 2021-04-27 深圳市华星光电半导体显示技术有限公司 显示面板制造方法以及显示面板

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014170761A (ja) * 2011-06-30 2014-09-18 Pioneer Electronic Corp 有機半導体装置および有機半導体装置の製造方法
US20150031147A1 (en) * 2013-06-25 2015-01-29 Cambridge Display Technology Limited Organic light emitting diode fabrication
US20160372670A1 (en) * 2015-06-16 2016-12-22 Samsung Display Co., Ltd. Organic light emitting diode display and manufacturing method thereof
CN106972115A (zh) * 2017-05-27 2017-07-21 深圳市华星光电技术有限公司 Oled显示面板的制作方法及oled显示面板
CN107565040A (zh) * 2017-08-30 2018-01-09 深圳市华星光电半导体显示技术有限公司 Oled基板及其制作方法
CN107819079A (zh) * 2017-10-18 2018-03-20 武汉华星光电半导体显示技术有限公司 有机发光显示面板及其制造方法、有机发光显示装置
CN108598110A (zh) * 2018-04-23 2018-09-28 深圳市华星光电半导体显示技术有限公司 Oled器件
CN109285963A (zh) * 2018-09-25 2019-01-29 合肥鑫晟光电科技有限公司 一种有机电致发光显示面板及其制备方法
CN109713021A (zh) * 2019-01-18 2019-05-03 深圳市华星光电半导体显示技术有限公司 一种oled显示面板及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120116237A (ko) * 2011-04-12 2012-10-22 (주)에스이피 플라즈마 전처리를 이용한 ｒｇｂ 인쇄 방법 및 이를 위한 플라즈마 장치
KR101640803B1 (ko) * 2014-09-26 2016-07-20 엘지디스플레이 주식회사 유기발광다이오드 표시장치 및 그 제조방법
CN104733505B (zh) * 2015-03-19 2017-11-24 京东方科技集团股份有限公司 发光显示器的像素界定层及其制作方法
CN105590957B (zh) * 2016-03-03 2019-07-12 深圳市华星光电技术有限公司 一种基于喷墨打印技术的有机发光显示装置及其制造方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014170761A (ja) * 2011-06-30 2014-09-18 Pioneer Electronic Corp 有機半導体装置および有機半導体装置の製造方法
US20150031147A1 (en) * 2013-06-25 2015-01-29 Cambridge Display Technology Limited Organic light emitting diode fabrication
US20160372670A1 (en) * 2015-06-16 2016-12-22 Samsung Display Co., Ltd. Organic light emitting diode display and manufacturing method thereof
CN106972115A (zh) * 2017-05-27 2017-07-21 深圳市华星光电技术有限公司 Oled显示面板的制作方法及oled显示面板
CN107565040A (zh) * 2017-08-30 2018-01-09 深圳市华星光电半导体显示技术有限公司 Oled基板及其制作方法
CN107819079A (zh) * 2017-10-18 2018-03-20 武汉华星光电半导体显示技术有限公司 有机发光显示面板及其制造方法、有机发光显示装置
CN108598110A (zh) * 2018-04-23 2018-09-28 深圳市华星光电半导体显示技术有限公司 Oled器件
CN109285963A (zh) * 2018-09-25 2019-01-29 合肥鑫晟光电科技有限公司 一种有机电致发光显示面板及其制备方法
CN109713021A (zh) * 2019-01-18 2019-05-03 深圳市华星光电半导体显示技术有限公司 一种oled显示面板及其制备方法

Also Published As

Publication number Publication date
CN110176477A (zh) 2019-08-27

Similar Documents

Publication Publication Date Title
CN107887423B (zh) 一种显示面板、其制备方法及显示装置
CN107591432B (zh) 像素界定层、显示基板及制造方法、显示装置
US10886343B2 (en) Pixel defining layer and method for manufacturing the same, display panel and method for manufacturing the same, and display device
CN103928497B (zh) Oled显示器件及其制作方法、显示装置
KR101325577B1 (ko) 유기전계 발광소자 및 그 제조방법
CN110931653B (zh) 显示面板及其制备方法
US10497764B2 (en) Substrate, method of preparing the same, and display device
WO2016145965A1 (zh) 像素界定层及其制作方法以及相应的发光显示器
CN109817826B (zh) 一种oled显示面板的制作方法
WO2019196587A1 (zh) 有机电致发光显示面板、其制作方法及显示装置
WO2018120362A1 (zh) Oled基板及其制作方法
US10505138B2 (en) Organic light-emitting diode structure
US10734583B2 (en) Electroluminescent substrate plate, method for manufacturing the same and display device
CN203787433U (zh) Oled显示器件及显示装置
WO2021031414A1 (zh) 显示面板的制备方法及其功能层的制备方法
CN107393946A (zh) 一种有机发光二极管显示面板及其制作方法
WO2020232805A1 (zh) 基于喷墨打印技术的有机发光显示装置及其制作方法
CN107403828A (zh) 一种显示面板及其制作方法
US11765922B2 (en) Display panel, display device and fabricating method of display panel comprising carrier functional layer having molecular chanins formed by cross-linking under light irradiation
JP2004253179A (ja) 機能性素子の製造方法およびその製造装置
KR102057470B1 (ko) 유기 발광 디스플레이 장치 및 그의 제조방법
US11289554B2 (en) Organic light emitting device and fabricating method thereof
US20220416217A1 (en) Oled device and manufacturing method thereof
WO2020147210A1 (zh) 一种 oled 显示面板及其制备方法
CN110071143A (zh) 有机发光器件及其制作方法

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: 19929899

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: 19929899

Country of ref document: EP

Kind code of ref document: A1