WO2020228264A1 - 一种喷墨打印墨水及其应用 - Google Patents

一种喷墨打印墨水及其应用 Download PDF

Info

Publication number
WO2020228264A1
WO2020228264A1 PCT/CN2019/115842 CN2019115842W WO2020228264A1 WO 2020228264 A1 WO2020228264 A1 WO 2020228264A1 CN 2019115842 W CN2019115842 W CN 2019115842W WO 2020228264 A1 WO2020228264 A1 WO 2020228264A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing ink
inkjet printing
organic
surface tension
solvent
Prior art date
Application number
PCT/CN2019/115842
Other languages
English (en)
French (fr)
Inventor
王士攀
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
Priority to US16/620,876 priority Critical patent/US11359106B2/en
Publication of WO2020228264A1 publication Critical patent/WO2020228264A1/zh

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

Definitions

  • the invention relates to the field of display technology, in particular to an inkjet printing ink and its application.
  • the display device can transform computer data into various characters, numbers, symbols or intuitive images for display, and can use keyboard and other input tools to input commands or data into the computer, and add, delete, modify, and change the display at any time with the help of system hardware and software content.
  • Display devices are classified into plasma, liquid crystal, light emitting diode and cathode ray tube types according to the display device used.
  • CRT Cathode Ray Tube cathode ray tube display
  • the filament heats up after power on, the cathode is excited, and the electron flow is emitted.
  • the electron flow is accelerated by the internal metal layer with high voltage and is focused by the lens to form a very thin
  • the electron beam hits the phosphor screen, and the phosphor glows after being hit at high speed.
  • LCD short for Liquid Crystal Display
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • the principle of the LCD is completely different from that of the CRT.
  • the LCD is constructed by placing a liquid crystal cell between two parallel glass substrates, with a TFT (thin film transistor) on the lower substrate glass and a CF (color filter) on the upper substrate glass.
  • each sub-pixel has a TFT, the gate of which is connected to the horizontal scan line, the drain is connected to the data line in the vertical direction, and the source is connected to the pixel electrode.
  • Applying enough voltage on the horizontal scan line will turn on all the TFTs on the horizontal scan line.
  • the pixel electrode on the horizontal scan line will be connected to the data line in the vertical direction, thereby connecting the data line
  • the display signal voltage is written into the pixels, and the rotation direction of the liquid crystal molecules is controlled by the signal and voltage changes on the TFT, so as to control whether the polarized light of each pixel point is emitted or not to achieve the display purpose.
  • TFT liquid crystal is equipped with a semiconductor switch for each pixel, so as to achieve complete and independent control of a pixel.
  • the liquid crystal material is sandwiched between the TFT glass layer and the color filter layer, and it is controlled by changing the voltage value that stimulates the liquid crystal.
  • the rotation direction of the liquid crystal molecules controls whether the polarized light of each pixel is emitted or not to achieve the purpose of display, and control the intensity and color of the light that appears at the end.
  • OLED Organic Light-Emitting Diode
  • OLED Organic Light-Emitting Diode
  • ITO indium tin oxide
  • the entire structure layer includes: hole transport layer (HTL), light emitting layer (EL) and electron transport layer (ETL).
  • the positive electrode holes and the surface cathode charges When the power is supplied to an appropriate voltage, the positive electrode holes and the surface cathode charges will combine in the light-emitting layer, and under the action of the Coulomb force, they will recombine with a certain probability to form excitons (electron-hole pairs) in an excited state.
  • the excited state is unstable in the normal environment.
  • the excitons in the excited state recombine and transfer energy to the luminescent material, making it transition from the ground state energy level to the excited state.
  • the excited state energy generates photons through the radiation relaxation process and releases light It can produce light, and the three primary colors of red, green and blue are produced according to different formulas, which constitute the basic colors.
  • OLED the characteristic of OLED is that it emits light by itself, unlike the thin film transistor liquid crystal display device (English full name: Thin film transistor-liquid crystal display, TFT-LCD for short) requires a backlight, so both visibility and brightness are high.
  • OLED has the advantages of low voltage demand, high power saving efficiency, fast response, light weight, thin thickness, simple structure, low cost, wide viewing angle, almost infinitely high contrast, low power consumption, and extremely high response speed. It has become One of today's most important display technologies is gradually replacing TFT-LCD and is expected to become the next-generation mainstream display technology after LCD.
  • the inkjet printing OLED technology configures organic functional materials into ink
  • the ink is precisely controlled drop by drop into the pixel pits through inkjet printing, which can realize the maximum use of materials, because high vacuum evaporation equipment and fine metals are not required.
  • the reticle achieves high resolution, effectively reduces costs, and has great advantages in preparing large-size OLED panels. .
  • the structure of inkjet printing OLED devices is generally a multi-organic layer structure.
  • a hole injection layer, a hole transport layer and an organic light-emitting layer are prepared layer by layer on the electrode, and then the electron transport layer and the cathode are prepared by evaporation.
  • the organic material is a solution coating method, there is a problem of mutual solubility between the organic layer and the layer, so it is not yet possible to effectively realize the printing preparation of the organic electron transport layer.
  • most of the organic light-emitting layer and electron transport layer materials can be dissolved in the same solvent, so that it is difficult to avoid solvent damage to the light-emitting layer when printing the electron transport layer ink. Therefore, in order to realize the printing process of the organic electron transport layer, it is urgent to develop a crosslinkable organic light-emitting layer to solve the above-mentioned problems.
  • An object of the present invention is to provide an inkjet printing ink and its application, which can solve the problems of damage to the organic light-emitting layer when printing an electron transport layer on the organic light-emitting layer.
  • an inkjet printing ink which includes a cross-linked organic host material, an organic doped luminescent material, a surface tension regulator, a viscosity regulator, and a solvent.
  • the cross-linking temperature of the cross-linked organic host material ranges from 80 to 120° C., and the mass fraction content of the cross-linked organic host material ranges from 5% to 30%; the high glass of the organic doped luminescent material
  • the transition temperature is greater than 120°C, the mass fraction of the organic doped luminescent material ranges from 0.1% to 5%; the mass fraction of the surface tension modifier ranges from 0.1% to 5%; the viscosity modifier
  • the mass fraction content range is 0.1%-5%; the mass fraction content range of the solvent is 55%-94.7%.
  • cross-linking organic host material contains a cross-linking group
  • the cross-linking group includes one or more of a vinyl group, an epoxy group and a uracil group.
  • the organic doped luminescent material includes one or more of fluorescent material, phosphorescent material and thermally activated delayed fluorescent material.
  • the surface tension adjusting agent includes one or more of a co-solvent, a surfactant, and a small molecule compound for adjusting surface tension
  • the small molecule compound for adjusting surface tension includes imidazole and its derivatives, phenol , One or more of hydroquinone.
  • the viscosity modifier includes one or more of alcohol, ether, ester, phenol, and amine.
  • the solvent includes one or more of toluene, xylene, chlorobenzene, o-dichlorobenzene, cyclohexylbenzene, and benzoic acid esters.
  • the organic doped luminescent material is Ir(mppy)3, and its chemical structure is as follows:
  • the mixing ratio of u-CzTP and Ir(mppy)3 ranges from 1:(0.01-0.05).
  • the solvent is a mixed solvent with a mixing ratio of o-xylene and cyclohexylbenzene in the range of 3: (1-10).
  • the inkjet printing ink concentration range is 5-15 mg/mL
  • the surface tension range is 20-60 mN/m
  • the viscosity range is 1-100 mPa ⁇ s.
  • Another embodiment of the present invention also provides an application of inkjet printing ink, wherein the inkjet printing ink is used in the preparation process of the organic light-emitting layer in the display panel, which is to print the inkjet printing ink.
  • the organic light-emitting layer is formed on the substrate of the display panel to be prepared, dried, and baked at 120°C.
  • the invention relates to an inkjet printing ink and its application.
  • the inkjet printing ink includes: a cross-linked organic host material, an organic doped luminescent material, a surface tension regulator, a viscosity regulator, and a solvent.
  • the present invention prints the above-mentioned inkjet printing ink on the substrate of the display panel to be prepared, vacuum-drys it, and after baking at 120°C, the organic light-emitting layer is formed.
  • FIG. 1 is a schematic diagram of the structure of the OLED display of the present invention.
  • the component can be directly placed on the other component; there may also be an intermediate component on which the component is placed , And the intermediate component is placed on another component.
  • a component is described as “installed to” or “connected to” another component, both can be understood as directly “installed” or “connected”, or a component is “installed to” or “connected to” through an intermediate component Another component.
  • This embodiment provides an inkjet printing ink, which includes a cross-linked organic host material, an organic doped luminescent material, a surface tension regulator, a viscosity regulator, and a solvent.
  • the cross-linking temperature of the cross-linked organic host material ranges from 80 to 120°C; the mass fraction content of the cross-linked organic host material ranges from 5% to 30%.
  • the cross-linked organic host material contains a cross-linking group, and the cross-linking group can be one or more of vinyl group, epoxy group and uracil group.
  • the chemical structural formulas of uracil group are as follows:
  • the high glass transition temperature of the organic doped luminescent material is greater than 120° C., and the mass fraction of the organic doped luminescent material ranges from 0.1% to 5%.
  • the organic doped luminescent material includes one or more of fluorescent materials, phosphorescent materials, and thermally activated delayed fluorescent materials.
  • the content of the mass fraction of the surface tension modifier ranges from 0.1% to 5%.
  • the surface tension regulator includes one or more of co-solvents, surfactants, and small molecule compounds that adjust surface tension; the small molecule compounds that adjust surface tension include imidazole and its derivatives, phenol, and p-benzene. One or more of diphenols.
  • the content of the mass fraction of the viscosity regulator ranges from 0.1% to 5%.
  • the viscosity modifier includes one or more of alcohol, ether, ester, phenol and amine.
  • the solvent includes one or more of toluene, xylene, chlorobenzene, o-dichlorobenzene, cyclohexylbenzene, and benzoic acid esters.
  • the cross-linked organic host material in this embodiment is u-CzTP, and its chemical structure is as follows:
  • the organic doped luminescent material is Ir(mppy)3, and its chemical structure is as follows: Specifically, the mixing ratio of u-CzTP and Ir(mppy)3 ranges from 1: (0.01-0.05).
  • the solvent used in this embodiment is specifically a mixed solvent with a mixing ratio of o-xylene and cyclohexylbenzene in the range of 3: (1-10).
  • the inkjet printing ink concentration range of this embodiment is 5-15 mg/mL, the surface tension range is 20-60 mN/m, and the viscosity range is 1-100 mPa ⁇ s.
  • This embodiment provides an application of inkjet printing ink, which includes: wherein the inkjet printing ink is used in the preparation process of the organic light-emitting layer in the display panel, which is to print the inkjet printing ink to the
  • the organic light-emitting layer 4 is formed on the substrate for preparing the display panel, vacuum drying it, and baking treatment at 120°C.
  • This can avoid the problem of miscibility between the organic light-emitting layer and the electron transport layer when inkjet printing the electron transport layer on the organic light-emitting layer, and avoid damage to the organic light-emitting layer, thereby realizing the inkjet printing process of the organic electron transport layer. reduce manufacturing cost.
  • this embodiment also provides an OLED display, which includes an anode 1, a hole injection layer 2, a hole transport layer 3, an organic light emitting layer 4, an electron transport layer 5, and a cathode 6.
  • the hole injection layer 2 is arranged on the anode 1; the hole transport layer 3 is arranged on the hole injection layer 2; the organic light emitting layer 4 is arranged on the hole transport layer 3
  • the organic light-emitting layer 3 is the organic light-emitting layer 4 prepared by the above-mentioned organic light-emitting layer preparation method; the electron transport layer 5 is disposed on the organic light emitting layer 4; the cathode 6 is disposed on the electron transport layer 5 on.
  • the anode 1 can be composed of ITO (Indium Tin Oxide), and the anode 1 made of ITO has good light transmittance; wherein the hole transport layer 3 controls the transport of holes, and then controls the holes in the organic The recombination of electrons in the light-emitting layer 3 improves the light-emitting efficiency.
  • the electron transport layer 5 controls the transport of electrons, and further controls the recombination of electrons and holes in the organic light-emitting layer 4, thereby improving luminous efficiency.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Electroluminescent Light Sources (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

一种喷墨打印墨水，包括：交联型有机主体材料、有机掺杂发光材料、表面张力调节剂、黏度调节剂以及溶剂。将该喷墨打印墨水打印到待制备显示面板的基板上，对其进行真空干燥，在120℃下烘烤处理后形成有机发光层（4）。

Description

一种喷墨打印墨水及其应用 技术领域
本发明涉及显示技术领域，具体涉及一种喷墨打印墨水及其应用。
背景技术
显示装置可以把计算机的数据变换成各种文字、数字、符号或直观的图像显示出来，并且可以利用键盘等输入工具把命令或数据输入计算机，借助系统的硬件和软件随时增添、删改、变换显示内容。显示装置根据所用之显示器件分为等离子、液晶、发光二极管和阴极射线管等类型。
CRT(Cathode Ray Tube的简称)阴极射线管显示器的工作原理是通电后灯丝发热，阴极被激发，发射出电子流，电子流受到带有高电压的内部金属层的加速，经过透镜聚焦形成极细的电子束，打击在荧光屏上，荧光粉受到高速撞击之后发光。
LCD(Liquid Crystal Display的简称)液晶显示器。目前主流的LCD是TFT-LCD(薄膜晶体管液晶显示器)，是由原有的液晶显示技术发展扩展而来的。与CRT的原理完全不同的是，LCD的构造是在两片平行的玻璃基板当中放置液晶盒，下基板玻璃上设置TFT(薄膜晶体管)，上基板玻璃上设置CF(彩色滤光片)。
TFT-LCD主动式液晶显示器中，每个子像素具有一个TFT，其栅极(Gate)连接至水平扫描线，漏极(Drain)连接至垂直方向的数据线，源极(Source)则连接至像素电极。在水平扫描线上施加足够的电压，会使得该条水平扫描线上的所有TFT打开，此时该条水平扫描线上的像素电极会与垂直方向上的数据线连通，从而将数据线上的显示信号 电压写入像素，通过TFT上的信号与电压改变来控制液晶分子的转动方向，从而达到控制每个像素点偏振光出射与否而达到显示目的。TFT液晶为每个像素都设有一个半导体开关，以此做到完全的单独的控制一个像素点，液晶材料被夹在TFT玻璃层和颜色过滤层之间，通过改变刺激液晶的电压值进而控制液晶分子的转动方向，从而控制每个像素点偏振光出射与否而达到显示目的，控制最后出现的光线强度与色彩。
OLED(英文全称：Organic Light-Emitting Diode,简称OLED)器件又称为有机电激光显示装置、有机发光半导体。OLED的基本结构是由一薄而透明具有半导体特性的铟锡氧化物(ITO)与电力之正极相连，再加上另一个金属面阴极，包成如三明治的结构。整个结构层中包括了:空穴传输层(HTL)、发光层(EL)与电子传输层(ETL)。当电力供应至适当电压时，正极空穴与面阴极电荷就会在发光层中结合，在库伦力的作用下以一定几率复合形成处于激发态的激子(电子-空穴对)，而此激发态在通常的环境中是不稳定的，激发态的激子复合并将能量传递给发光材料，使其从基态能级跃迁为激发态，激发态能量通过辐射驰豫过程产生光子，释放出光能，产生光亮，依其配方不同产生红、绿和蓝RGB三基色，构成基本色彩。
首先OLED的特性是自己发光，不像薄膜晶体管液晶显示装置(英文全称：Thin film transistor-liquid crystal display，简称TFT-LCD)需要背光，因此可视度和亮度均高。其次OLED具有电压需求低、省电效率高、反应快、重量轻、厚度薄，构造简单，成本低、 广视角、几乎无穷高的对比度、较低耗电、极高反应速度等优点，已经成为当今最重要的显示技术之一，正在逐步替代TFT-LCD，有望成为继LCD之后的下一代主流显示技术。
喷墨打印OLED技术将有机功能材料配置成墨水后，通过喷墨印刷的方式精确控制墨水逐滴滴入像素坑内，可以实现材料的最大程度利用，由于不需要高真空蒸镀设备，及精细金属掩模版实现高分辨率，有效降低了成本，在制备大尺寸OLED面板方面具有极大的优势。。
技术问题
喷墨打印OLED器件结构一般为多有机层结构，在电极上逐层印刷制备空穴注入层，空穴传输层及有机发光层，然后通过蒸镀的方式制备电子传输层及阴极。，由于有机材料为溶液涂布的方式，有机层与层之间存在互溶问题，因此目前尚无法有效实现有机电子传输层的打印制备。而目前有机发光层及电子传输层材料大多数都能溶解于相同溶剂中，使得打印电子传输层墨水时，难以避免对发光层的溶剂破坏。因此为实现有机电子传输层的印刷制程，亟需开发可交联的有机发光层以解决上述问题。
技术解决方案
本发明的一个目的是提供一种喷墨打印墨水及其应用，其能够解决在有机发光层上印刷电子传输层时对有机发光层产生破坏等问题。
为了解决上述问题，本发明的一个实施方式提供了一种喷墨打印墨水，其中包括：交联型有机主体材料、有机掺杂发光材料、表面张力调节剂、黏度调节剂以及溶剂。其中所述交联型有机主体材料的交联温度范围为80-120℃，所述交联型有机主体材料的质量分数含量 范围为5％-30％；所述有机掺杂发光材料的高玻璃化转变温度大于120℃，所述有机掺杂发光材料的质量分数含量范围为0.1％-5％；所述表面张力调节剂的质量分数含量范围为0.1％-5％；所述黏度调节剂的质量分数含量范围为0.1％-5％；所述溶剂的质量分数含量范围为55％-94.7％。
进一步地，其中所述交联型有机主体材料中含有交联基团，所述交联基团包括乙烯基、环氧基以及尿嘧啶基中的一种或多种。
进一步地，其中所述有机掺杂发光材料中包括荧光材料、磷光材料以及热活化延迟荧光材料中的一种或多种。
进一步地，其中所述表面张力调节剂包括共溶剂、表面活性剂、调节表面张力的小分子化合物中的一种或多种；所述调节表面张力的小分子化合物包括咪唑及其衍生物、苯酚、对苯二酚中的一种或多种。
进一步地，其中所述黏度调节剂包括醇、醚、酯、酚、胺中的一种或多种。
进一步地，其中所述溶剂包括甲苯、二甲苯、氯苯、邻二氯苯、环己基苯及苯甲酸酯类的一种或多种。
进一步地，其中所述交联型有机主体材料u-CzTP，其化学结构式如下：
Figure PCTCN2019115842-appb-000001
所述有机掺杂发光材料为Ir(mppy)3，其化学结构式如下：
Figure PCTCN2019115842-appb-000002
所述u-CzTP与Ir(mppy)3的混合比例范围为1：(0.01-0.05)。
进一步地，其中所述溶剂为邻二甲苯和环己基苯的混合比例范围为3：(1-10)的混合溶剂。
进一步地，其中所述喷墨打印墨水浓度范围为5-15mg/mL，表面张力范围为20-60mN/m，黏度范围为1-100mPa.s。
本发明的另一个实施方式还提供了一种喷墨打印墨水的应用，其中所述喷墨打印墨水用于显示面板中的有机发光层的制备工艺中，其为将所述喷墨打印墨水打印到待制备显示面板的基板上，对其进行干燥，在120℃下烘烤处理后形成所述有机发光层。
有益效果
本发明涉及一种喷墨打印墨水及其应用。一方面，所述喷墨打印墨水包括：交联型有机主体材料、有机掺杂发光材料、表面张力调节剂、黏度调节剂以及溶剂。另一方面，本发明将上述喷墨打印墨水打印到待制备显示面板的基板上，对其进行真空干燥，在120℃下烘烤 处理后形成所述有机发光层。由此可以避免在有机发光层上喷墨打印电子传输层时存在的有机发光层与电子传输层互溶问题，避免对有机发光层造成破坏，由此实现有机电子传输层的喷墨打印制程，从而降低生产成本。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明OLED显示器的结构示意图。
图中部件标识如下：
1、阳极                         2、空穴注入层
3、空穴传输层                   4、有机发光层
5、电子传输层                   6、阴极
本发明的实施方式
以下结合说明书附图详细说明本发明的优选实施例，以向本领域中的技术人员完整介绍本发明的技术内容，以举例证明本发明可以实施，使得本发明公开的技术内容更加清楚，使得本领域的技术人员更容易理解如何实施本发明。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例，下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，本文所使用的 方向用语是用来解释和说明本发明，而不是用来限定本发明的保护范围。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。此外，为了便于理解和描述，附图所示的每一组件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。
当某些组件，被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
实施例1
本实施方式提供了一种喷墨打印墨水，其中包括：交联型有机主体材料、有机掺杂发光材料、表面张力调节剂、黏度调节剂以及溶剂。
其中所述交联型有机主体材料的交联温度范围为80-120℃；所述交联型有机主体材料的质量分数含量范围为5％-30％。其中所述交联型有机主体材料中含有交联基团，所述交联基团可以是乙烯基、环氧基以及尿嘧啶基中的一种或多种，所述乙烯基、环氧基以及尿嘧啶基的化学结构式分别如下：
Figure PCTCN2019115842-appb-000003
其中所述有机掺杂发光材料的高玻璃化转变温度大于120℃，所述有机掺杂发光材料的质量分数含量范围为0.1％-5％。其中所述有机掺杂发光材料包括荧光材料、磷光材料以及热活化延迟荧光材料中的一种或多种。
其中所述表面张力调节剂的质量分数含量范围为0.1％-5％。其中所述表面张力调节剂包括共溶剂、表面活性剂、调节表面张力的小分子化合物中的一种或多种；所述调节表面张力的小分子化合物包括咪唑及其衍生物、苯酚、对苯二酚中的一种或多种。
其中所述黏度调节剂的质量分数含量范围为0.1％-5％。其中所述黏度调节剂包括醇、醚、酯、酚、胺中的一种或多种。
其中所述溶剂的质量分数含量范围为55％-94.7％。其中所述溶剂包括甲苯、二甲苯、氯苯、邻二氯苯、环己基苯及苯甲酸酯类的一种或多种。
本实施例中的交联型有机主体材料为u-CzTP，其化学结构式如下所示：
Figure PCTCN2019115842-appb-000004
有机掺杂发光材料为Ir(mppy)3，其化学结构式如下所示：
Figure PCTCN2019115842-appb-000005
具体的，所述u-CzTP与Ir(mppy)3的混合比例范围为1：(0.01-0.05)。
本实施例采用的溶剂具体为邻二甲苯和环己基苯的混合比例范围为3：(1-10)的混合溶剂。
本实施例所述的喷墨打印墨水浓度范围为5-15mg/mL，表面张力范围为20-60mN/m，黏度范围为1-100mPa.s。
实施例2
本实施方式提供了一种喷墨打印墨水的应用，其中包括：其中所述喷墨打印墨水用于显示面板中的有机发光层的制备工艺中，其为将所述喷墨打印墨水打印到待制备显示面板的基板上，对其进行真空干燥，在120℃下烘烤处理后形成所述有机发光层4。由此可以避免在 有机发光层上喷墨打印电子传输层时存在的有机发光层与电子传输层互溶问题，避免对有机发光层造成破坏，由此实现有机电子传输层的喷墨打印制程，从而降低生产成本。
实施例3
如图1所示，本实施方式还提供了一种OLED显示器，其中包括：阳极1、空穴注入层2、空穴传输层3、有机发光层4、电子传输层5以及阴极6。其中所述空穴注入层2设置于所述阳极1上；所述空穴传输层3设置于所述空穴注入层2上；所述有机发光层4设置于所述空穴传输层3上，所述有机发光层3为上述有机发光层制备方法制备出的有机发光层4；所述电子传输层5设置于所述有机发光层4上；所述阴极6设置于所述电子传输层5上。
其中所述阳极1可以由ITO(氧化铟锡)组成，由ITO制成的阳极1具有良好的透光性；其中所述空穴传输层3控制着空穴的传输，进而控制空穴在有机发光层3中与电子的复合，进而提高发光效率。其中所述电子传输层5控制着电子的传输，进而控制电子在所述有机发光层4中与空穴的复合，进而提高发光效率。
以上对本发明所提供的喷墨打印墨水及其应用以及OLED显示器进行了详细介绍。应理解，本文所述的示例性实施方式应仅被认为是描述性的，用于帮助理解本发明的方法及其核心思想，而并不用于限制本发明。在每个示例性实施方式中对特征或方面的描述通常应被视作适用于其他示例性实施例中的类似特征或方面。尽管参考示例性实施例描述了本发明，但可建议所属领域的技术人员进行各种变化和更 改。本发明意图涵盖所附权利要求书的范围内的这些变化和更改，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种喷墨打印墨水，其中包括：
    交联型有机主体材料，所述交联型有机主体材料的交联温度范围为80-120℃，所述交联型有机主体材料的质量分数含量范围为5％-30％；
    有机掺杂发光材料，所述有机掺杂发光材料的高玻璃化转变温度大于120℃，所述有机掺杂发光材料的质量分数含量范围为0.1％-5％；
    表面张力调节剂，所述表面张力调节剂的质量分数含量范围为0.1％-5％；
    黏度调节剂，所述黏度调节剂的质量分数含量范围为0.1％-5％；以及
    溶剂，所述溶剂的质量分数含量范围为55％-94.7％。
  2. 根据权利要求1所述的喷墨打印墨水，其中所述交联型有机主体材料中含有交联基团，所述交联基团包括乙烯基、环氧基以及尿嘧啶基中的一种或多种。
  3. 根据权利要求1所述的喷墨打印墨水，其中所述有机掺杂发光材料中包括荧光材料、磷光材料以及热活化延迟荧光材料中的一种或多种。
  4. 根据权利要求1所述的喷墨打印墨水，其中所述表面张力调节剂包括共溶剂、表面活性剂、调节表面张力的小分子化合物中的一种或多种；所述调节表面张力的小分子化合物包括咪唑及其衍生 物、苯酚、对苯二酚中的一种或多种。
  5. 根据权利要求1所述的喷墨打印墨水，其中所述黏度调节剂包括醇、醚、酯、酚、胺中的一种或多种。
  6. 根据权利要求1所述的喷墨打印墨水，其中所述溶剂包括甲苯、二甲苯、氯苯、邻二氯苯、环己基苯及苯甲酸酯类的一种或多种。
  7. 根据权利要求1所述的喷墨打印墨水，其中所述交联型有机主体材料为u-CzTP，其化学结构式如下：
    Figure PCTCN2019115842-appb-100001
    所述有机掺杂发光材料为Ir(mppy)3，其化学结构式如下：
    Figure PCTCN2019115842-appb-100002
    所述u-CzTP与Ir(mppy)3的混合比例范围为1：(0.01-0.05)。
  8. 根据权利要求1所述的喷墨打印墨水，其中所述溶剂为邻二甲苯和环己基苯的混合比例范围为3：(1-10)的混合溶剂。
  9. 根据权利要求1所述的喷墨打印墨水，其中所述喷墨打印墨水浓度范围为5-15mg/mL，表面张力范围为20-60mN/m，黏度范围为1-100mPa.s。
  10. 一种权利要求1所述的喷墨打印墨水的应用，其中所述喷墨打印 墨水用于显示面板中的有机发光层的制备工艺中，其为将所述喷墨打印墨水打印到待制备显示面板的基板上，对其进行干燥，在120℃下烘烤处理后形成所述有机发光层。
PCT/CN2019/115842 2019-05-13 2019-11-06 一种喷墨打印墨水及其应用 WO2020228264A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/620,876 US11359106B2 (en) 2019-05-13 2019-11-06 Inkjet printing ink and application thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910391908.2A CN110157241A (zh) 2019-05-13 2019-05-13 一种喷墨打印墨水及其应用
CN201910391908.2 2019-05-13

Publications (1)

Publication Number Publication Date
WO2020228264A1 true WO2020228264A1 (zh) 2020-11-19

Family

ID=67634175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/115842 WO2020228264A1 (zh) 2019-05-13 2019-11-06 一种喷墨打印墨水及其应用

Country Status (2)

Country Link
CN (1) CN110157241A (zh)
WO (1) WO2020228264A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110157241A (zh) * 2019-05-13 2019-08-23 深圳市华星光电半导体显示技术有限公司 一种喷墨打印墨水及其应用
US11359106B2 (en) 2019-05-13 2022-06-14 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Inkjet printing ink and application thereof
US11441045B2 (en) * 2019-12-16 2022-09-13 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Ink composition for inkjet printing organic light-emitting diodes and method of manufacturing the same
CN115772341A (zh) * 2021-09-06 2023-03-10 牛津大学(苏州)科技有限公司 用于形成有机发光层或感光层的涂布液、发光层或感光层及其制备方法
CN114525058A (zh) * 2022-04-21 2022-05-24 季华恒烨(佛山)电子材料有限公司 一种有机发光层墨水及制备方法、发光层形成方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102076729A (zh) * 2008-08-29 2011-05-25 默克专利有限公司 电致发光聚合物、其制备方法及其应用
WO2017052308A2 (ko) * 2015-09-25 2017-03-30 한국생산기술연구원 유기소자에 사용되는 유기화합물 및 이를 이용한 유기소자의 제조방법
CN107706318A (zh) * 2017-10-16 2018-02-16 深圳市华星光电半导体显示技术有限公司 电子传输层喷墨打印墨水及其制备方法
CN110157241A (zh) * 2019-05-13 2019-08-23 深圳市华星光电半导体显示技术有限公司 一种喷墨打印墨水及其应用

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102076729A (zh) * 2008-08-29 2011-05-25 默克专利有限公司 电致发光聚合物、其制备方法及其应用
WO2017052308A2 (ko) * 2015-09-25 2017-03-30 한국생산기술연구원 유기소자에 사용되는 유기화합물 및 이를 이용한 유기소자의 제조방법
CN107706318A (zh) * 2017-10-16 2018-02-16 深圳市华星光电半导体显示技术有限公司 电子传输层喷墨打印墨水及其制备方法
CN110157241A (zh) * 2019-05-13 2019-08-23 深圳市华星光电半导体显示技术有限公司 一种喷墨打印墨水及其应用

Also Published As

Publication number Publication date
CN110157241A (zh) 2019-08-23

Similar Documents

Publication Publication Date Title
WO2020228264A1 (zh) 一种喷墨打印墨水及其应用
JP4440523B2 (ja) インクジェット法による有機ｅｌ表示装置及びカラーフィルターの製造方法、製造装置
Gorter et al. Toward inkjet printing of small molecule organic light emitting diodes
WO2020199445A1 (zh) 一种oled显示器件及其制备方法
JP4413535B2 (ja) インクジェット法による有機ｅｌ表示装置及びカラーフィルターの製造方法、製造装置
KR20080054626A (ko) 유기 전계발광표시소자 및 그 제조방법
WO2018120362A1 (zh) Oled基板及其制作方法
WO2020172930A1 (zh) 一种可交联空穴传输层材料及其制备方法
US20160276617A1 (en) Opposed substrate of an oled array substrate and method for preparing the same, and display device
WO2020215434A1 (zh) 一种 oled 器件及其制备方法
US20120025732A1 (en) Light emitting device and method for driving the same
CN107732029B (zh) 一种oled显示面板及其制作方法
US20220059794A1 (en) Organic emitting diode and organic light emitting diode display device including the same
US6856088B2 (en) Organic electroluminescence display device and method of fabricating the same
US11315984B2 (en) Color filter substrate, manufacturing method thereof, and OLED display device
US10879498B2 (en) OLED display device and manufacturing method thereof
EP2713399A2 (en) Organic light emitting display device and method for manufacturing the same
US11359106B2 (en) Inkjet printing ink and application thereof
WO2021097981A1 (zh) 有机电致发光二极管器件、显示面板及其制备方法
WO2020237875A1 (zh) 一种显示面板及其制备方法
KR20150074241A (ko) 투명표시장치
KR100712122B1 (ko) 평판표시장치
WO2021017312A1 (zh) 一种显示面板及其显示装置
US11094752B2 (en) Display panel and preparation method thereof
JP2019160771A (ja) 有機発光ダイオードの準備のための熱転写フィルムおよび同フィルムの準備方法

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: 19928497

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: 19928497

Country of ref document: EP

Kind code of ref document: A1