WO2016090749A1 - 柔性oled显示装置及其制造方法 - Google Patents

柔性oled显示装置及其制造方法 Download PDF

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WO2016090749A1
WO2016090749A1 PCT/CN2015/072488 CN2015072488W WO2016090749A1 WO 2016090749 A1 WO2016090749 A1 WO 2016090749A1 CN 2015072488 W CN2015072488 W CN 2015072488W WO 2016090749 A1 WO2016090749 A1 WO 2016090749A1
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flexible
metal layer
display device
substrate
layer
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PCT/CN2015/072488
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English (en)
French (fr)
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曾维静
吴泰必
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深圳市华星光电技术有限公司
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Priority to US14/424,426 priority Critical patent/US20160343969A1/en
Publication of WO2016090749A1 publication Critical patent/WO2016090749A1/zh

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    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • H10K50/841—Self-supporting sealing arrangements
    • 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
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • 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
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • 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
    • 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
    • H10K71/60—Forming conductive regions or layers, e.g. electrodes
    • 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
    • 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
    • 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 present invention relates to the field of display technologies, and in particular, to a flexible OLED display device and a method of fabricating the same.
  • OLED Organic Light-Emitting Diode
  • an OLED display device generally employs an ITO pixel electrode and a metal electrode as anodes and cathodes of the device, respectively. Under a certain voltage, electrons and holes are injected from the cathode and the anode to the electron transport layer and the hole transport layer, respectively. The holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer, respectively, and meet in the light-emitting layer to form excitons and excite the light-emitting molecules, and the latter emits visible light through radiation relaxation.
  • OLED displays Since organic materials are easily reacted with water and oxygen, as an organic material-based display device, OLED displays have very high requirements for packaging. In order to achieve commercial applications, OLED components are required to have a lifetime of 10,000 hours, and to meet the above life requirements, water vapor transmission rate of -610-6g/m2/day and oxygen permeability ⁇ 10-5cc/ M2/day (1 atm) package requirements.
  • the flexible OLED display device which is made of flexible substrate and which is flexible, lightweight and portable is an important development direction of the current display technology.
  • its packaging effect determines its luminous efficiency and service life.
  • the packaging method of the flexible OLED in the prior art is generally a thin film package, that is, an organic/inorganic repeated superimposed protective layer is formed on the OLED element.
  • the film package is directly completed on the OLED element, and the water blocking ability is poor, which is easy to damage the OLED element.
  • the object of the present invention is to provide a flexible OLED display device with good sealing performance, water and oxygen resistance, prevention of damage of the organic OLED element, improvement of the packaging effect of the OLED display device, and prolonging the service life of the OLED display device.
  • Another object of the present invention is to provide a manufacturing method of a flexible OLED display device, which is The method is simple and easy to operate, and the obtained flexible OLED display device has good sealing performance, can block water and block oxygen, and improve the quality of the flexible OLED display device.
  • the present invention provides a flexible OLED display device comprising: a flexible OLED substrate and a flexible package cover;
  • the flexible OLED substrate includes a transparent substrate, an anode metal layer disposed on the flexible substrate, an organic layer disposed on the anode metal layer, and a cathode metal layer disposed on the organic layer;
  • the flexible package cover comprises a barrier layer, a rollable hard coat layer, and a flexible metal layer disposed between the barrier layer and the rollable hard coat layer;
  • the flexible package cover is laminated on the flexible OLED substrate, and a barrier layer of the flexible package cover and a cathode metal layer of the flexible OLED substrate are bonded together by an adhesive.
  • the flexible substrate is a transparent TFT substrate, and the anode metal layer is a transparent electrode.
  • the cathode metal layer is a reflective electrode.
  • the material of the barrier layer is an insulating inorganic material or an insulating organic polymer material.
  • the material of the flexible metal layer is one of aluminum, silver, copper, and titanium.
  • the invention also provides a manufacturing method of a flexible OLED display device, comprising the following steps:
  • Step 1 providing a flexible substrate, depositing an anode metal layer, an organic layer, and a cathode metal layer on the transparent substrate to obtain a flexible OLED substrate;
  • Step 2 providing a flexible metal foil as a flexible metal layer of the flexible package cover, preparing a barrier layer on one side of the flexible metal layer, and providing a curlable hard coating on the other side of the flexible metal layer to obtain flexibility
  • Step 2 providing a flexible metal foil as a flexible metal layer of the flexible package cover, preparing a barrier layer on one side of the flexible metal layer, and providing a curlable hard coating on the other side of the flexible metal layer to obtain flexibility
  • Step 3 The cathode metal layer of the prepared flexible OLED substrate and the barrier layer of the flexible package cover are bonded together by a bonding adhesive in a vacuum environment to form a sealed flexible OLED display device.
  • the flexible substrate is a transparent TFT substrate
  • the anode metal layer is a transparent electrode
  • the cathode metal layer is a reflective electrode
  • the barrier layer in the step 2 is an insulating inorganic material which is prepared by sputtering, chemical deposition or thermal evaporation.
  • the barrier layer in the step 2 is an insulating organic polymer material which is formed by coating the insulating organic polymer precursor material on the flexible metal layer through a baking curing process.
  • the material of the flexible metal layer in the step 2 is one of aluminum, silver, copper and titanium.
  • the present invention also provides a flexible OLED display device comprising: a flexible OLED substrate and a flexible package cover;
  • the flexible OLED substrate includes a flexible substrate and an anode gold disposed on the flexible substrate. a genus layer, an organic layer disposed on the anode metal layer, and a cathode metal layer disposed on the organic layer;
  • the flexible package cover comprises a barrier layer, a rollable hard coat layer, and a flexible metal layer disposed between the barrier layer and the rollable hard coat layer;
  • the flexible package cover plate is laminated on the flexible OLED substrate, and a barrier layer of the flexible package cover plate and a cathode metal layer of the flexible OLED substrate are bonded together by an adhesive;
  • the flexible substrate is a transparent TFT substrate, and the anode metal layer is a transparent electrode;
  • the cathode metal layer is a reflective electrode.
  • the present invention provides a flexible OLED display device and a method of fabricating the same, which are excellent in a flexible metal layer by using a package cover plate composed of a barrier layer, a flexible metal layer, and a rollable hard coat layer.
  • the water-blocking oxygen barrier capability and the ductility protect the flexible OLED display device from reacting with external water and oxygen, improve the luminous efficiency of the flexible OLED display device, and prolong the service life of the flexible OLED display device.
  • FIG. 1 is a schematic structural view of a flexible OLED display device of the present invention.
  • FIG. 2 is a schematic flow chart of a method of fabricating a flexible OLED display device of the present invention.
  • the present invention provides a flexible OLED display device comprising: a flexible OLED substrate 100 and a flexible package cover 200;
  • the flexible OLED substrate 100 includes a flexible substrate 101, an anode metal layer 102 disposed on the flexible substrate 101, an organic layer 103 disposed on the anode metal layer 102, and a cathode metal layer 104 disposed on the organic layer 103;
  • the flexible substrate 101 is a transparent TFT substrate
  • the anode metal layer 102 is a transparent electrode
  • the cathode metal layer 104 is a reflective electrode
  • the organic layer 103 includes: a hole transport layer on the genus layer 102, a light-emitting layer provided on the hole transport layer, and an electron transport layer provided on the light-emitting layer, when a certain amount is applied between the anode metal layer 102 and the cathode metal layer 104
  • electrons and holes are injected from the cathode metal layer 104 and the anode metal layer 102 to the electron transport layer and the hole transport layer, respectively, and electrons and holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer, respectively.
  • the light is directly emitted from the transparent anode metal layer 102 or reflected by the reflective cathode metal layer 104 and then emitted from the transparent anode metal layer 102.
  • the flexible package cover 200 includes a barrier layer 201, a rollable hard coat layer 203, and a flexible metal layer 202 disposed between the barrier layer 201 and the rollable hard coat layer 203;
  • the barrier layer 201 is made of an insulating material, and the insulating material may be an insulating inorganic material such as SiO 2 , SiN x or Al 2 O 3 , or may be an insulating organic polymer material.
  • the barrier layer 201 prevents the flexible metal layer 202 from contacting the cathode metal layer 104 to cause a short circuit, and has a certain water blocking capacity.
  • the flexible package cover 200 is laminated on the flexible OLED substrate 200. Specifically, the barrier layer 201 of the flexible package cover 200 and the cathode metal layer 104 of the flexible OLED substrate 200 are bonded by an adhesive. Together.
  • the material of the flexible metal layer 202 is one of aluminum, silver, copper, and titanium.
  • the material of the flexible metal layer 202 needs to have good ductility and compactness to realize flexible display and water blocking and oxygen barrier.
  • the present invention also provides a method for manufacturing a flexible OLED display device, comprising the following steps:
  • Step 1 providing a flexible substrate 101, sequentially depositing an anode metal layer 102, an organic layer 103, and a cathode metal layer 104 on the flexible substrate 101 to obtain a flexible OLED substrate 100;
  • the flexible substrate 101 is a transparent TFT substrate, and the anode metal layer 102 is prepared by using a transparent conductive material such as ITO (indium tin oxide) as a transparent electrode; the cathode metal layer 104 is made of aluminum or magnesium.
  • a metal material such as silver is used as a reflective electrode; the organic layer 103 includes a hole transport layer disposed on the anode metal layer 102, a light emitting layer disposed on the hole transport layer, and an electron disposed on the light emitting layer. Transport layer.
  • Step 2 providing a flexible metal foil as the flexible metal layer 202 of the flexible package cover, preparing a barrier layer 201 on the side of the flexible metal layer 202, and providing a curlable hard coat on the other side of the flexible metal layer 202 Layer 203, the flexible package cover 200 is made;
  • the flexible metal layer 202 is made of a metal material having ductility and good compactness, such as aluminum, silver, copper, or titanium.
  • the good ductility enables flexible display of the flexible OLED substrate, and good compactness can block water resistance. Oxygen protects organic materials in flexible OLED display devices.
  • the material selected by the barrier layer 201 is required to have insulation to prevent short circuit between the flexible metal layer 202 and the cathode metal layer 104.
  • the barrier layer 201 in the step 2 may be an insulating inorganic material prepared by sputtering, chemical deposition or thermal evaporation, or may be an insulating organic polymer material coated on the flexible metal layer 202.
  • the organic polymer precursor material is formed by a baking curing process.
  • the rollable hard coat layer 203 has a function of protecting the metal sheet from damage and insulation, and can be prepared by any flexible material having the above functions, for example, an organic polymer material passing through the flexible metal layer 202.
  • the organic polymer precursor material is coated thereon and formed by a baking curing process.
  • Step 3 The cathode metal layer 104 of the prepared flexible OLED substrate 100 and the barrier layer 201 of the flexible package cover 200 are bonded by a bonding adhesive in a vacuum environment to form a sealed flexible OLED display device.
  • the present invention provides a flexible OLED display device and a method of fabricating the same that utilizes a package cover plate composed of a barrier layer, a flexible metal layer, and a rollable hard coat layer, and utilizes an excellent resistance of the flexible metal layer.
  • the water oxygen barrier capability and ductility protect the flexible OLED display device from reacting with external water oxygen, improve the luminous efficiency of the flexible OLED display device, and prolong the service life of the flexible OLED display device.

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

Abstract

一种柔性OLED显示装置及其制备方法，该柔性OLED显示装置包括柔性OLED基板(100)和柔性OLED封装盖板(200)，通过采用由阻隔层(201)、柔性金属层(202)和可卷曲硬涂层(203)组成的柔性封装盖板(200)进行封装，利用柔性金属层(202)优异的阻水阻氧能力和延展性，保护柔性OLED显示装置不与外界水氧反应，提升柔性OLED显示装置的发光效率，延长柔性OLED显示装置的使用寿命。

Description

柔性OLED显示装置及其制造方法 技术领域
本发明涉及显示技术领域，尤其涉及一种柔性OLED显示装置及其制造方法。
背景技术
有机发光二极管(Organic Light-Emitting Diode，OLED)，具有十分优异的显示性能，以及自发光、结构简单、超轻薄、响应速度快、宽视角、低功耗及可实现柔性显示等特性。
OLED发光原理为有机半导体材料和发光材料在电场驱动下，通过载流子注入和复合导致发光的现象。具体的，OLED显示器件通常采用ITO像素电极和金属电极分别作为器件的阳极和阴极，在一定电压驱动下，电子和空穴分别从阴极和阳极注入到电子传输层和空穴传输层，电子和空穴分别经过电子传输层和空穴传输层迁移到发光层，并在发光层中相遇，形成激子并使发光分子激发，后者经过辐射弛豫而发出可见光。
由于有机材料易与水氧反应，作为基于有机材料的显示设备，OLED显示屏对封装的要求非常高。为了实现商业化的应用，OLED元件要求达到使用寿命(lifetime)≧10,000小时，而要达到上述寿命要求需满足水汽穿透率≦10-6g/m2/day和氧气穿透率≦10-5cc/m2/day(1atm)的封装要求。
采用柔性衬底制成可弯曲、重量轻、便于携带的柔性OLED显示器件是目前显示技术的一个重要发展方向，而对柔性OLED显示器件而言其封装效果决定了其发光效率与使用寿命。现有技术中柔性OLED的封装方式一般为薄膜封装，即在OLED元件上，形成有机/无机重复叠加的保护层。但直接在OLED元件上完成薄膜封装，阻水阻氧能力不佳，容易对OLED元件造成损害。
发明内容
本发明的目的在于提供一种柔性OLED显示装置，密封性好，阻水阻氧，防止有机OLED元件损坏，提升OLED显示装置的封装效果，延长OLED显示装置的使用寿命。
本发明的目的还在于提供一种柔性OLED显示装置的制造方法，制作 方法简单，易操作，制得的一种柔性OLED显示装置密封性好，能阻水阻氧，提升柔性OLED显示装置的品质。
为实现上述目的，本发明提供了一种柔性OLED显示装置，包括：柔性OLED基板以及柔性封装盖板；
其中，所述柔性OLED基板包括透明基板、设于柔性基板上的阳极金属层、设于阳极金属层上的有机层、及设于有机层上的阴极金属层；
所述柔性封装盖板包括阻隔层、可卷曲硬涂层、及设于阻隔层和可卷曲硬涂层之间的柔性金属层；
所述柔性封装盖板层压于所述柔性OLED基板上，并且所述柔性封装盖板的阻隔层与所述柔性OLED基板的阴极金属层通过粘结胶粘接在一起。
所述柔性基板为透明TFT基板，所述阳极金属层为透明电极。
所述阴极金属层为反射电极。
所述阻隔层的材料为绝缘无机材料或绝缘有机聚合物材料。
所述柔性金属层的材料为铝、银、铜、钛其中的一种。
本发明还提供一种柔性OLED显示装置的制造方法，包括如下步骤：
步骤1、提供一柔性基板，在所述透明基板上依次沉积阳极金属层、有机层、阴极金属层，制得柔性OLED基板；
步骤2、提供一柔性金属薄片作为柔性封装盖板的柔性金属层，在所述柔性金属层一侧制备阻隔层，在所述柔性金属层的另一侧设置可卷曲硬涂层，制得柔性封装盖板；
步骤3、将制备完成的柔性OLED基板的阴极金属层与柔性封装盖板的阻隔层在真空环境中通过粘结胶粘接起来，形成密封的柔性OLED显示装置。
所述步骤1中，柔性基板为透明TFT基板，阳极金属层为透明电极，阴极金属层为反射电极。
所述步骤2中阻隔层为绝缘无机材料，其通过溅射、化学沉积或热蒸镀的方式制备。
所述步骤2中阻隔层为绝缘有机聚合物材料，其通过在柔性金属层上涂布所述绝缘有机聚合物前体材料，经过烘烤固化工艺形成。
所述步骤2中柔性金属层的材料为铝、银、铜、钛其中的一种。
本发明还提供一种柔性OLED显示装置，包括：柔性OLED基板以及柔性封装盖板；
其中，所述柔性OLED基板包括柔性基板、设于柔性基板上的阳极金 属层、设于阳极金属层上的有机层、及设于有机层上的阴极金属层；
所述柔性封装盖板包括阻隔层、可卷曲硬涂层、及设于阻隔层与可卷曲硬涂层之间的柔性金属层；
所述柔性封装盖板层压于所述柔性OLED基板上，并且所述柔性封装盖板的阻隔层与所述柔性OLED基板的阴极金属层通过粘结胶粘接在一起；
其中，所述柔性基板为透明TFT基板，所述阳极金属层为透明电极；
其中，所述阴极金属层为反射电极。
本发明的有益效果：本发明提供了一种柔性OLED显示装置及其制造方法，通过采用由阻隔层、柔性金属层和可卷曲硬涂层组成的封装盖板进行封装，利用柔性金属层优异的阻水阻氧能力和延展性，保护柔性OLED显示装置不与外界水氧反应，提升柔性OLED显示装置的发光效率，延长柔性OLED显示装置的使用寿命。
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。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为本发明的柔性OLED显示装置结构示意图；
图2为本发明的柔性OLED显示装置的制造方法的示意流程图。
具体实施方式
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，本发明提供了一种柔性OLED显示装置，包括：柔性OLED基板100以及柔性封装盖板200；
所述柔性OLED基板100包括柔性基板101、设于柔性基板101上的阳极金属层102、设于阳极金属层102上的有机层103、及设于有机层103上的阴极金属层104；
具体的，所述柔性基板101为透明TFT基板，该阳极金属层102为透明电极，阴极金属层104为反射电极；所述有机层103包括：设于阳极金 属层102上的空穴传输层、设于所述空穴传输层上的发光层、设于所述发光层上的电子传输层，当在阳极金属层102与阴极金属层104之间施加一定的驱动电压后，电子和空穴分别从阴极金属层104和阳极金属层102注入到电子传输层和空穴传输层，电子和空穴分别经过电子传输层和空穴传输层迁移到发光层，并在发光层中相遇，形成激子并使发光分子激发，后者经过辐射弛豫而发出可见光。光线经过透明的阳极金属层102直接射出或者经过反射型的阴极金属层104反射后从透明的阳极金属层102射出。
所述柔性封装盖板200包括阻隔层201、可卷曲硬涂层203、及设于阻隔层201与可卷曲硬涂层203之间的柔性金属层202；
其中，所述阻隔层201采用绝缘材料制备，所述绝缘材料可以为SiO2，SiNx，Al2O3等绝缘无机材料，也可以为具有绝缘性的有机聚合物材料。该阻隔层201可防止柔性金属层202与阴极金属层104接触而造成短路，同时具备一定的阻水阻氧能力。
所述柔性封装盖板200层压于所述柔性OLED基板200上，具体的，所述柔性封装盖板200的阻隔层201与所述柔性OLED基板200的阴极金属层104通过粘接胶粘接在一起。
优选的，所述柔性金属层202的材料为铝、银、铜、钛其中的一种，柔性金属层202的材料需要具备良好的延展性和致密性，以实现柔性显示和阻水阻氧的功能。
请参阅图2，本发明还提供了一种柔性OLED显示装置的制造方法，包括如下步骤：
步骤1、提供一柔性基板101，在所述柔性基板101上依次沉积阳极金属层102、有机层103、及阴极金属层104，制得柔性OLED基板100；
该步骤1中，所述柔性基板101为透明TFT基板，所述阳极金属层102选用ITO(氧化铟锡)等透明导电材料制备，用作透明电极；所述阴极金属层104选用铝、镁、银等金属材料制备，用作反射电极；所述有机层103包括：设于阳极金属层102上的空穴传输层、设于空穴传输层上的发光层、及设于发光层上的电子传输层。
步骤2、提供一柔性金属箔片作为柔性封装盖板的柔性金属层202，在所述柔性金属层202一侧制备阻隔层201，在所述柔性金属层202的另一侧设置可卷曲硬涂层203，制得柔性封装盖板200；
所述柔性金属层202采用具有延展性和良好致密性的金属材料，如铝、银、铜、或钛等，良好的延展性可使得柔性OLED基板实现柔性显示，良好的致密性可以阻水阻氧，保护柔性OLED显示装置中的有机材料。
阻隔层201选择的材料需具备绝缘性，防止柔性金属层202与阴极金属层104之间发生短路。具体的，所述步骤2中阻隔层201可以为绝缘无机材料，其通过溅射、化学沉积或热蒸镀的方式制备，也可以为绝缘有机聚合物材料，其通过在柔性金属层202上涂布有机聚合物前体材料，经过烘烤固化工艺形成。
所述可卷曲硬涂层203具有保护金属薄片不受损伤及绝缘的功能，可采用任意具备上述功能的柔性材料制备，例如，有机聚合物材料，所述有机聚合物材料通过在柔性金属层202上涂布有机聚合物前体材料，经过烘烤固化工艺形成。
步骤3、将制备完成的柔性OLED基板100的阴极金属层104与柔性封装盖板200的阻隔层201在真空环境中通过粘结胶粘接起来，形成密封的柔性OLED显示装置。
通过在真空环境下进行制备，可保证在制备完成时柔性OLED显示装置中没有残留的空气，保护柔性OLED显示装置中的有机材料。
综上所述，本发明提供的一种柔性OLED显示装置及其制造方法，通过采用由阻隔层、柔性金属层和可卷曲硬涂层组成的封装盖板进行封装，利用柔性金属层优异的阻水阻氧能力和延展性，保护柔性OLED显示装置不与外界水氧反应，提升柔性OLED显示装置的发光效率，延长柔性OLED显示装置的使用寿命。
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 (13)

  1. 一种柔性OLED显示装置，包括：柔性OLED基板以及柔性封装盖板；
    其中，所述柔性OLED基板包括柔性基板、设于柔性基板上的阳极金属层、设于阳极金属层上的有机层、及设于有机层上的阴极金属层；
    所述柔性封装盖板包括阻隔层、可卷曲硬涂层、及设于阻隔层与可卷曲硬涂层之间的柔性金属层；
    所述柔性封装盖板层压于所述柔性OLED基板上，并且所述柔性封装盖板的阻隔层与所述柔性OLED基板的阴极金属层通过粘结胶粘接在一起。
  2. 如权利要求1所述的柔性OLED显示装置，其中，所述柔性基板为透明TFT基板，所述阳极金属层为透明电极。
  3. 如权利要求1所述的柔性OLED显示装置，其中，所述阴极金属层为反射电极。
  4. 如权利要求1所述的柔性OLED显示装置，其中，所述阻隔层的材料为绝缘无机材料或绝缘有机聚合物材料。
  5. 如权利要求1所述的柔性OLED显示装置，其中，所述柔性金属层的材料为铝、银、铜、钛其中的一种。
  6. 一种柔性OLED显示装置的制造方法，包括如下步骤：
    步骤1、提供一柔性基板，在所述柔性基板上依次沉积阳极金属层、有机层、及阴极金属层，制得柔性OLED基板；
    步骤2、提供一柔性金属薄片作为柔性封装盖板的柔性金属层，在所述柔性金属层一侧制备阻隔层，在所述柔性金属层的另一侧设置可卷曲硬涂层，制得柔性封装盖板；
    步骤3、将制备完成的柔性OLED基板的阴极金属层与柔性封装盖板的阻隔层在真空环境中通过粘结胶粘接起来，形成密封的柔性OLED显示装置。
  7. 如权利要求6所述的柔性OLED显示装置的制造方法，其中，所述步骤1中，柔性基板为透明TFT基板，阳极金属层为透明电极，阴极金属层为反射电极。
  8. 如权利要求6所述的柔性OLED显示装置的制造方法，其中，所述步骤2中阻隔层为绝缘无机材料，其通过溅射、化学沉积或热蒸镀的方式 制备。
  9. 如权利要求6所述的柔性OLED显示装置的制造方法，其中，所述步骤2中阻隔层为绝缘有机聚合物材料，其通过在柔性金属层上涂布有机聚合物前体材料，经过烘烤固化工艺形成。
  10. 如权利要求6所述的柔性OLED显示装置的制造方法，其中，所述步骤2中柔性金属层的材料为铝、银、铜、钛其中的一种。
  11. 一种柔性OLED显示装置，包括：柔性OLED基板以及柔性封装盖板；
    其中，所述柔性OLED基板包括柔性基板、设于柔性基板上的阳极金属层、设于阳极金属层上的有机层、及设于有机层上的阴极金属层；
    所述柔性封装盖板包括阻隔层、可卷曲硬涂层、及设于阻隔层与可卷曲硬涂层之间的柔性金属层；
    所述柔性封装盖板层压于所述柔性OLED基板上，并且所述柔性封装盖板的阻隔层与所述柔性OLED基板的阴极金属层通过粘结胶粘接在一起；
    其中，所述柔性基板为透明TFT基板，所述阳极金属层为透明电极；
    其中，所述阴极金属层为反射电极。
  12. 如权利要求11所述的柔性OLED显示装置，其中，所述阻隔层的材料为绝缘无机材料或绝缘有机聚合物材料。
  13. 如权利要求11所述的柔性OLED显示装置，其中，所述柔性金属层的材料为铝、银、铜、钛其中的一种。
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