WO2020191907A1 - 薄膜封装结构、oled显示面板及其制作方法 - Google Patents

薄膜封装结构、oled显示面板及其制作方法 Download PDF

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WO2020191907A1
WO2020191907A1 PCT/CN2019/087554 CN2019087554W WO2020191907A1 WO 2020191907 A1 WO2020191907 A1 WO 2020191907A1 CN 2019087554 W CN2019087554 W CN 2019087554W WO 2020191907 A1 WO2020191907 A1 WO 2020191907A1
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film
thin film
organic
tautomer
inorganic
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孙佳佳
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
    • 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

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  • the invention relates to the field of electronic display, in particular to a thin film packaging structure, an OLED display panel and a manufacturing method thereof.
  • OLED devices have the advantages of light weight, wide viewing angle, fast response time, and high luminous efficiency, and have huge application prospects.
  • OLED devices can be fabricated on a flexible substrate to form a flexible display screen that can be bent, so that OLED display panels have greater advantages compared to traditional liquid crystal panels.
  • TFE thin film encapsulation
  • inorganic film layer acts as a water and oxygen barrier layer
  • organic film layer acts as a buffer layer to slow the internal stress of the inorganic film layer and enhance the flexibility of the OLED device.
  • the present invention provides a thin film packaging structure, an OLED display panel and a manufacturing method thereof, so as to delay the loss and aging of the organic film layer in the TFE.
  • the present invention provides a thin film packaging structure, which includes:
  • a first organic film located on the first inorganic film
  • a second inorganic film covering the first organic film and the first inorganic film;
  • the material constituting the first organic thin film is an organic polymer with self-healing ability.
  • the organic polymer with self-healing ability includes 6 methyl-2 butyl ureidopyrimidinone dimer.
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a first tautomer, and the first tautomer is 4[1H]-pyrimidine A ketone monomer, the chemical structure of the 4[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a second tautomer, and the second tautomer is 6[1H]-pyrimidine A ketone monomer, the chemical structure of the 6[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a third tautomer, and the third tautomer is pyrimidin-4-ol mono
  • the chemical structure of the pyrimidin-4-ol monomer is:
  • the present invention also provides an OLED display panel, which includes a thin film packaging structure; the thin film packaging structure includes:
  • a first organic film located on the first inorganic film
  • a second inorganic film covering the first organic film and the first inorganic film;
  • the material constituting the first organic thin film is an organic polymer with self-healing ability.
  • the organic polymer with self-healing ability includes 6 methyl-2 butyl ureidopyrimidinone dimer.
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a first tautomer, and the first tautomer is 4[1H]-pyrimidine A ketone monomer, the chemical structure of the 4[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a second tautomer, and the second tautomer is 6[1H]-pyrimidine A ketone monomer, the chemical structure of the 6[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a third tautomer, and the third tautomer is pyrimidin-4-ol mono
  • the chemical structure of the pyrimidin-4-ol monomer is:
  • the present invention also provides a manufacturing method of an OLED display panel, which includes the following steps:
  • a second inorganic film covering the first organic film is formed; wherein the material constituting the first organic film is an organic polymer with self-healing ability.
  • the organic polymer with self-healing ability includes 6 methyl-2 butyl ureidopyrimidinone dimer.
  • the method for forming the organic polymer with self-healing ability includes inkjet printing, electrofluid printing, spin coating, and printing.
  • the present invention replaces the organic film in the original film encapsulation structure with the organic polymer 6 methyl-2 butyl ureidopyrimidinone dimer with self-repairing ability.
  • 6Methyl-2-butylureidopyrimidinone dimer has super self-healing ability. After tensile damage occurs, it can "self-heal” under normal temperature and pressure through a large number of internal hydrogen bonds, and " After self-healing, it has the same mechanical properties as before damage.
  • Using 6methyl-2-butylureidopyrimidinone dimer as the organic film can effectively avoid the loss and aging of the packaging structure after multiple folding, thereby improving the bending ability of the OLED device.
  • FIG. 1 is a comparative schematic diagram of a thin-film packaging structure in the prior art before and after bending;
  • FIG. 2 is a schematic structural diagram of an OLED display panel before packaging in a specific embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an OLED display panel covered with a first inorganic film in a specific embodiment of the present invention
  • FIG. 4 is a schematic diagram of the structure of an OLED display panel covered with a first organic film in a specific embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an OLED display panel covered with a second inorganic film in a specific embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an OLED display panel in another embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the process of damage and self-repair of the first organic film in the film packaging structure of the present invention.
  • FIG. 1 is a comparative schematic diagram of a thin film packaging structure in the prior art before and after bending.
  • the existing thin film packaging structure often includes a film layer structure composed of a first inorganic thin film 102, a first organic thin film 104, and a second inorganic thin film 106.
  • the first inorganic thin film 102 and the second inorganic thin film 106 serve as a water and oxygen barrier layer;
  • the first organic thin film 104 serves as a buffer layer, which is used to release the internal stress of the inorganic layer and enhance the flexibility of the OLED device.
  • the present invention proposes a thin film packaging structure, an OLED display panel and a manufacturing method thereof, so as to delay the loss and aging of the organic film layer in the TFE.
  • FIG. 5 is a schematic structural diagram of an OLED display panel covered with a second inorganic film in a specific embodiment of the present invention.
  • the present invention provides an OLED display panel.
  • the OLED display panel includes a substrate 20 and an OLED device 30 on the substrate 20.
  • the OLED display panel further includes a thin film packaging structure, and the thin film packaging structure includes:
  • a first organic film 14, the first organic film 14 is located on the first inorganic film 12;
  • the second inorganic film 16 covers the first organic film 14 and the first inorganic film 12.
  • the thin film packaging structure further includes a third inorganic thin film 13 located above the second inorganic thin film 16, and The second organic film 15 above the third inorganic film 13 and the fourth inorganic film 17 above the second organic film 15.
  • the number and structure of the organic thin films and inorganic thin films of the thin film encapsulation structure can be set as required, and are not limited to the embodiments of the present invention.
  • the material constituting the first organic thin film 14 is an organic polymer with self-healing ability.
  • the organic polymer with self-repairing ability includes 6 methyl-2 butyl ureidopyrimidinone dimer.
  • the monomers of the dimer of 6-methyl-2 butyl ureidopyrimidinone have 3 tautomers, and each tautomer contains 2 pairs of hydrogen bond donors and 2 pairs of hydrogen bond acceptors.
  • the existence of 4-hydrogen bond pairs makes the dimer of 6-methyl-2 butyl ureidopyrimidinone super self-repairing ability.
  • FIG. 7 is a schematic diagram of a process of damage and self-repair of the first organic film in the film packaging structure of the present invention.
  • 6-methyl-2 butyl ureidopyrimidinone dimer can achieve "self-healing" under normal temperature and pressure through a large number of internal hydrogen bonds, and after "self-healing", it has the same effect as before damage.
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a first tautomer, and the first tautomer is a 4[1H]-pyrimidinone monomer, and The chemical structure of 4[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a second tautomer, and the second tautomer is a 6[1H]-pyrimidinone monomer, and the 6[1H ]-The chemical structure of pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a third tautomer, and the third tautomer is a pyrimidin-4-ol monomer, and the pyrimidin-4-ol
  • the chemical structure of the monomer is:
  • the present invention also provides a manufacturing method of an OLED display panel.
  • 2 is a schematic structural diagram of an OLED display panel before encapsulation in a specific embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an OLED display panel after covering the first inorganic film in a specific embodiment of the present invention
  • 4 is a schematic diagram of the structure of the OLED display panel covered with the first organic film in a specific embodiment of the present invention.
  • the method includes the following steps:
  • a flexible substrate 20 is provided, and an OLED device 30 formed on the flexible substrate 20 is provided.
  • the method of forming an OLED device is a conventional technology in the field, and will not be repeated here.
  • the first inorganic thin film 12 includes one or a combination of silicon nitride, silicon oxide, silicon oxynitride, silicon carbide, silicon carbonitride, and aluminum oxide.
  • the method of forming the first inorganic thin film 12 includes, but is not limited to, chemical vapor deposition, atomic layer deposition and other technologies.
  • a first organic film 14 covering the first inorganic film 12 is formed.
  • the material constituting the first organic film 14 is an organic polymer with self-healing ability.
  • the organic polymer with self-healing ability includes 6 methyl-2 butyl ureidopyrimidinone dimer.
  • the method of forming the organic polymer with self-healing ability includes inkjet printing, electrofluid printing, spin coating and printing.
  • the monomers of the 6-methyl-2 butyl ureidopyrimidinone dimer have three tautomers, and each tautomer contains two pairs of hydrogen bond donors and two pairs of hydrogen bond acceptors.
  • the existence of 4-hydrogen bond pairs makes the dimer of 6-methyl-2 butyl ureidopyrimidinone super self-repairing ability.
  • Fig. 7 is a schematic diagram of the process of damage and self-repair of the first organic film in the film packaging structure of the present invention.
  • 6-methyl-2 butyl ureidopyrimidinone dimer can achieve "self-healing" under normal temperature and pressure through a large number of internal hydrogen bonds, and after "self-healing", it has the same effect as before damage. The same mechanical properties.
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a first tautomer, and the first tautomer is 4[1H]-pyrimidinone monomer, and The chemical structure of 4[1H]-pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a second tautomer, and the second tautomer is a 6[1H]-pyrimidinone monomer, and the 6[1H ]-The chemical structure of pyrimidinone monomer is:
  • the 6-methyl-2-butylureidopyrimidinone dimer includes a third tautomer, and the third tautomer is a pyrimidin-4-ol monomer, and the pyrimidin-4-ol
  • the chemical structure of the monomer is:
  • the second inorganic thin film 16 includes one or a combination of silicon nitride, silicon oxide, silicon oxynitride, silicon carbide, silicon carbonitride, and aluminum oxide.
  • the method for forming the second inorganic thin film 16 includes, but is not limited to, chemical vapor deposition, atomic layer deposition and other technologies.
  • the present invention replaces the organic film in the original film encapsulation structure with the organic polymer 6 methyl-2 butyl ureidopyrimidinone dimer with self-repairing ability.
  • the 6-methyl-2 butyl ureidopyrimidinone dimer has super self-healing ability. After tensile damage occurs, it can achieve "self-healing" under normal temperature and pressure through a large number of internal hydrogen bonds. And after "self-healing", it has the same mechanical properties as before damage.
  • Using 6methyl-2-butylureidopyrimidinone dimer as the organic film can effectively avoid the loss and aging of the packaging structure after multiple folding, thereby improving the bending ability of the OLED device.

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Abstract

一种薄膜封装结构、OLED显示面板及其制作方法。所述薄膜封装结构包括：第一无机薄膜(12)；第一有机薄膜(14)，所述第一有机薄膜(14)位于所述第一无机薄膜(12)上；第二无机薄膜(16)，所述第二无机薄膜(16)覆盖所述第一有机薄膜(14)和所述第一无机薄膜(12)；其中，构成所述第一有机薄膜(14)的材料为具有自修复能力的有机聚合物。

Description

薄膜封装结构、OLED显示面板及其制作方法 技术领域
本发明涉及电子显示领域，尤其涉及一种薄膜封装结构、OLED显示面板及其制作方法。
背景技术
有机发光二极管(organiclightemittingdiode,OLED)器件的具有重量轻、视角广、响应时间快、发光效率高等优点，具有巨大的应用前景。此外，OLED器件可以制作在柔性基板上，形成能弯曲的柔性显示屏，使得OLED显示面板相比于传统的液晶面板具有更大的优势。
为了保证OLED器件的弯折性，当前通常采用薄膜封装(thin film encapsulation,TFE)技术来对其进行封装。TFE常采用无机/有机/无机交叠的膜层结构。无机膜层作为阻隔水氧层，有机膜层则作为缓冲层，用于缓释无机膜层内应力，增强OLED器件的柔性。
技术问题
对于可折叠的柔性设备，在多次折叠后，TFE中的有机膜层不可避免的会出现损耗和老化现象，在外弯表面出现裂纹，造成TFE有机膜层缓冲应力能力严重下降，限制了可折叠手机的使用寿命。如何延缓TFE中有机膜层的损耗和老化，进而提高OLED器件的弯折能力是一个急需解决的现实问题。
技术解决方案
本发明提供一种薄膜封装结构、OLED显示面板及其 制作方法，以延缓TFE中有机膜层的损耗和老化。
为解决上述问题，本发明提供了一种薄膜封装结构，其包括：
第一无机薄膜；
第一有机薄膜，所述第一有机薄膜位于所述第一无机薄膜上；
第二无机薄膜，所述第二无机薄膜覆盖所述第一有机薄膜和所述第一无机薄膜；其中，
构成所述第一有机薄膜的材料为具有自修复能力的有机聚合物。
根据本发明中的其中一个方面，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体，所述4[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000001
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000002
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
Figure PCTCN2019087554-appb-000003
相应的，本发明还提供了一种OLED显示面板，其包括薄膜封装结构；所述薄膜封装结构包括：
第一无机薄膜；
第一有机薄膜，所述第一有机薄膜位于所述第一无机薄膜上；
第二无机薄膜，所述第二无机薄膜覆盖所述第一有机薄膜和所述第一无机薄膜；其中，
构成所述第一有机薄膜的材料为具有自修复能力的有机聚合物。
根据本发明中的其中一个方面，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体，所述4[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000004
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000005
根据本发明中的其中一个方面，所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
Figure PCTCN2019087554-appb-000006
相应的，本发明还提供了一种OLED显示面板的制作方法，该方法包括以下步骤：
提供柔性基板；
在所述柔性基板上形成的OLED器件；
形成覆盖所述OLED器件的第一无机薄膜；
形成覆盖所述第一无机薄膜的第一有机薄膜；
形成覆盖所述第一有机薄膜的第二无机薄膜；其中，构成所述第一有机薄膜的材料为具有自修复能力的有机聚合物。
根据本发明中的其中一个方面，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
根据本发明中的其中一个方面，形成所述具有自修复能力的有机聚合物的方法包括喷墨打印、电流体喷印、旋涂和印刷。
有益效果
本发明将原有的薄膜封装结构中的有机薄膜替换为具有自修复能力的有机聚合物6甲基-2丁基脲基嘧啶酮二聚体。6甲基-2丁基脲基嘧啶酮二聚体具有超强的自修复能力，在出现拉伸损坏后，可通过其内部大量的氢键在 常温常压下实现“自愈”，且“自愈”后具有与损坏前相同的机械性能。使用6甲基-2丁基脲基嘧啶酮二聚体作为有机薄膜可有效避免封装结构经多次折叠后的损耗和老化，进而提高OLED器件的弯折能力。
附图说明
图1为现有技术中的薄膜封装结构在弯折前和弯折后的对比示意图；
图2为本发明的一个具体实施例中的封装前的OLED显示面板的结构示意图；
图3为本发明的一个具体实施例中的覆盖了第一无机薄膜以后的OLED显示面板的结构示意图；
图4为本发明的一个具体实施例中的覆盖了第一有机薄膜以后的OLED显示面板的结构示意图；
图5为本发明的一个具体实施例中的覆盖了第二无机薄膜以后的OLED显示面板的结构示意图；
图6为本发明的另一个实施例中的OLED显示面板的结构示意图；
图7为本发明中的薄膜封装结构中的第一有机薄膜损坏和自修复的过程示意图。
本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图 中，结构相似的单元是用以相同标号表示。
首先对现有技术进行简要说明。参见图1，图1为现有技术中的薄膜封装结构在弯折前和弯折后的对比示意图。现有的薄膜封装结构常包括由第一无机薄膜102、第一有机薄膜104和第二无机薄膜106构成的膜层结构。其中，第一无机薄膜102和第二无机薄膜106作为阻隔水氧层；第一有机薄膜104作为缓冲层，用于缓释无机膜层内应力，增强OLED器件的柔性。
参见图1，对于可折叠的柔性设备，在多次折叠后，薄膜封装结构中的有机薄膜不可避免的会出现损耗和老化现象，在外弯表面出现裂纹，造成TFE有机膜层缓冲应力能力严重下降，限制了可折叠手机的使用寿命。
因此，本发明提出了一种薄膜封装结构、OLED显示面板及其制作方法，以延缓TFE中有机膜层的损耗和老化。
参见图5，图5为本发明的一个具体实施例中的覆盖了第二无机薄膜以后的OLED显示面板的结构示意图。
参见图5，本发明提供了一种OLED显示面板，所述OLED显示面板包括基板20和位于基板20上的OLED器件30。所述OLED显示面板还包括薄膜封装结构，所述薄膜封装结构包括：
第一无机薄膜12；
第一有机薄膜14，所述第一有机薄膜14位于所述第一无机薄膜12上；
第二无机薄膜16，所述第二无机薄膜16覆盖所述第一 有机薄膜14和所述第一无机薄膜12。
当然，所述封装结构中的有机薄膜和无机薄膜的数量和结构可以根据需要进行设置，而不仅限于本实施例所述。参见图6，为了增强薄膜封装结构的阻水氧的效果，在本发明的另一个实施例中，所述薄膜封装结构还包括位于所述第二无机薄膜16上方的第三无机薄膜13、位于所述第三无机薄膜13上方的第二有机薄膜15，以及位于所述第二有机薄膜15上方的第四无机薄膜17。
在本发明的其他实施例中，所述薄膜封装结构的有机薄膜和无机薄膜的数量和结构可以根据需要进行设置，而不限于本发明的实施例。
在本发明中，构成所述第一有机薄膜14的材料为具有自修复能力的有机聚合物。具体的，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。6甲基-2丁基脲基嘧啶酮二聚体的单体共有3种互变异构体，每种互变异构体内含有2对氢键供体和2对氢键受体。4氢键对的存在使得6甲基-2丁基脲基嘧啶酮二聚体具有超强的自修复能力。
参见图7，图7为本发明中的薄膜封装结构中的第一有机薄膜损坏和自修复的过程示意图。在拉伸损坏后，6甲基-2丁基脲基嘧啶酮二聚体可通过其内部大量的氢键作用在常温常压下实现“自愈”，且“自愈”后具有与损坏前相同的机械性能。
具体的，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体， 所述4[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000007
所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000008
所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
Figure PCTCN2019087554-appb-000009
参见图2至图5，本发明还提供了一种OLED显示面板 的制作方法。图2为本发明的一个具体实施例中的封装前的OLED显示面板的结构示意图；图3为本发明的一个具体实施例中的覆盖了第一无机薄膜以后的OLED显示面板的结构示意图；图4为本发明的一个具体实施例中的覆盖了第一有机薄膜以后的OLED显示面板的结构示意图。该方法包括以下步骤：
首先，如图2所示，提供柔性基板20，并在所述柔性基板20上形成的OLED器件30。形成OLED器件的方法为本领域的常规技术，在此不再赘述。
之后，如图3所示，形成覆盖所述OLED器件的第一无机薄膜12。所述第一无机薄膜12包括氮化硅、氧化硅、氮氧化硅、碳化硅、碳氮化硅和氧化铝中的一种或多种的组合。形成所述第一无机薄膜12的方法包括但不限于化学气相淀积、原子层淀积等技术。
之后，如图4所示，形成覆盖所述第一无机薄膜12的第一有机薄膜14。其中，构成所述第一有机薄膜14的材料为具有自修复能力的有机聚合物。所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。形成所述具有自修复能力的有机聚合物的方法包括喷墨打印、电流体喷印、旋涂和印刷。
所述6甲基-2丁基脲基嘧啶酮二聚体的单体共有3种互变异构体，每种互变异构体内含有2对氢键供体和2对氢键受体。4氢键对的存在使得6甲基-2丁基脲基嘧啶酮二聚体具有超强的自修复能力。
参见图7，图7为本发明中的薄膜封装结构中的第一 有机薄膜损坏和自修复的过程示意图。在拉伸损坏后，6甲基-2丁基脲基嘧啶酮二聚体可通过其内部大量的氢键作用在常温常压下实现“自愈”，且“自愈”后具有与损坏前相同的机械性能。
具体的，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体，所述4[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000010
所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
Figure PCTCN2019087554-appb-000011
所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
Figure PCTCN2019087554-appb-000012
最后，形成覆盖所述第一有机薄膜14的第二无机薄膜16。所述第二无机薄膜16包括氮化硅、氧化硅、氮氧化硅、碳化硅、碳氮化硅和氧化铝中的一种或多种的组合。形成所述第二无机薄膜16的方法包括但不限于化学气相淀积、原子层淀积等技术。
本发明将原有的薄膜封装结构中的有机薄膜替换为具有自修复能力的有机聚合物6甲基-2丁基脲基嘧啶酮二聚体。所述6甲基-2丁基脲基嘧啶酮二聚体具有超强的自修复能力，在出现拉伸损坏后，可通过其内部大量的氢键在常温常压下实现“自愈”，且“自愈”后具有与损坏前相同的机械性能。使用6甲基-2丁基脲基嘧啶酮二聚体作为有机薄膜可有效避免封装结构经多次折叠后的损耗和老化，进而提高OLED器件的弯折能力。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (14)

  1. 一种薄膜封装结构，其中，所述薄膜封装结构包括：
    第一无机薄膜；
    第一有机薄膜，所述第一有机薄膜位于所述第一无机薄膜上；
    第二无机薄膜，所述第二无机薄膜覆盖所述第一有机薄膜和所述第一无机薄膜；其中，
    构成所述第一有机薄膜的材料为具有自修复能力的有机聚合物。
  2. 根据权利要求1所述的薄膜封装结构，其中，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
  3. 根据权利要求2所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体，所述4[1H]-嘧啶酮单体的化学结构为：
    Figure PCTCN2019087554-appb-100001
  4. 根据权利要求2所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
    Figure PCTCN2019087554-appb-100002
  5. 根据权利要求2所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
    Figure PCTCN2019087554-appb-100003
  6. 一种OLED显示面板，其中，所述OLED显示面板包括的薄膜封装结构，所述薄膜封装结构包括：
    第一无机薄膜；
    第一有机薄膜，所述第一有机薄膜位于所述第一无机薄膜上；
    第二无机薄膜，所述第二无机薄膜覆盖所述第一有机薄膜和所述第一无机薄膜；其中，
    构成所述第一有机薄膜的材料为具有自修复能力的有机聚合物。
  7. 根据权利要求6所述的薄膜封装结构，其中，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
  8. 根据权利要求7所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第一互变异构体，所述第一互变异构体为4[1H]-嘧啶酮单体，所述4[1H]-嘧啶酮单体的化学结构为：
    Figure PCTCN2019087554-appb-100004
  9. 根据权利要求7所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第二互变异构体，所述第二互变异构体为6[1H]-嘧啶酮单体，所述6[1H]-嘧啶酮单体的化学结构为：
    Figure PCTCN2019087554-appb-100005
  10. 根据权利要求7所述的薄膜封装结构，其中，所述6甲基-2丁基脲基嘧啶酮二聚体包括第三互变异构体，所述第三互变异构体为嘧啶-4-醇单体，所述嘧啶-4-醇单体的化学结构为：
    Figure PCTCN2019087554-appb-100006
  11. 一种OLED显示面板的制作方法，其中，该方法包括以下步骤：
    提供柔性基板；
    在所述柔性基板上形成的OLED器件；
    形成覆盖所述OLED器件的第一无机薄膜；
    形成覆盖所述第一无机薄膜的第一有机薄膜；
    形成覆盖所述第一有机薄膜的第二无机薄膜；其中，构成所述第一有机薄膜的材料为具有自修复能力的有机 聚合物。
  12. 根据权利要求11所述的OLED显示面板的制作方法，其中，所述具有自修复能力的有机聚合物包括6甲基-2丁基脲基嘧啶酮二聚体。
  13. 根据权利要求12所述的OLED显示面板的制作方法，其中，形成所述具有自修复能力的有机聚合物的方法包括喷墨打印、电流体喷印、旋涂和印刷。
  14. 根据权利要求11所述的OLED显示面板的制作方法，其中，所述第一无机薄膜和第二无机薄膜包括氮化硅、氧化硅、氮氧化硅、碳化硅、碳氮化硅和氧化铝中的一种或多种的组合。
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