WO2022052235A1 - 显示面板及其制作方法 - Google Patents

显示面板及其制作方法 Download PDF

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Publication number
WO2022052235A1
WO2022052235A1 PCT/CN2020/124379 CN2020124379W WO2022052235A1 WO 2022052235 A1 WO2022052235 A1 WO 2022052235A1 CN 2020124379 W CN2020124379 W CN 2020124379W WO 2022052235 A1 WO2022052235 A1 WO 2022052235A1
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Prior art keywords
protective layer
display panel
carboxylic acid
acid amide
organic compound
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PCT/CN2020/124379
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English (en)
French (fr)
Inventor
向昌明
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Tcl华星光电技术有限公司
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Priority to US15/734,416 priority Critical patent/US20220077422A1/en
Publication of WO2022052235A1 publication Critical patent/WO2022052235A1/zh

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    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays

Definitions

  • the present invention relates to the field of display technology, and in particular, to a display panel and a manufacturing method thereof.
  • Existing organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panels generally encapsulate the OLED device by arranging an encapsulation cover plate above the OLED device.
  • An existing display panel includes a substrate, a display device, an encapsulation substrate for encapsulating the display device, a sealant, and a hydrophobic barrier at the outermost layer of the encapsulation area.
  • the contact between the existing package structure and the display device is poor, and moisture easily enters the display panel, resulting in low performance and poor reliability performance of the display panel.
  • Embodiments of the present invention provide a display panel and a manufacturing method thereof, which are used to improve the problem that the reliability of the display panel is deteriorated due to the entry of water vapor into the display panel.
  • An embodiment of the present invention provides a method for fabricating a display panel, including the following steps:
  • An organic compound solution is coated on the first protective layer, and the organic compound solution is self-assembled on the first protective layer to form a second protective layer, and the second protective layer has a cross-linked three-dimensional network structure.
  • an organic compound solution is coated on the first protective layer, and the organic compound solution is self-assembled on the first protective layer to form a second protective layer. Steps include:
  • a second annealing process is performed on the one-dimensional structure to form the second protective layer, wherein the annealing temperature is between 25 degrees Celsius and 70 degrees Celsius.
  • the pH of the organic compound solution is between 3 and 7.
  • the organic compound includes an aromatic hydrocarbon derivative having a carboxylic acid amide group.
  • the organic compound includes at least one compound represented by the following chemical structural formula:
  • R represents an alkane group with a carbon chain number between 1 and 8
  • x is the number of carboxylic acid amide groups
  • y is the number of carboxylic acid amide groups, where 1 ⁇ x ⁇ 3, 1 ⁇ y ⁇ 2, 1 ⁇ z ⁇ 2.
  • the organic compound includes:
  • the organic compound solution is coated on the first protective layer, so that the organic compound solution is self-assembled on the first protective layer to form a second protective layer
  • the layer steps also include:
  • An encapsulation layer is formed on the second protective layer, and the encapsulation layer includes at least one inorganic layer and at least one organic layer alternately stacked.
  • the first protective layer is formed by anionic polymerization.
  • An embodiment of the present invention also provides a display panel, including:
  • first protective layer covering at least a part of the light emitting device, wherein the material of the first protective layer includes a polymer material;
  • a second protective layer covers the first protective layer, wherein the second protective layer has a cross-linked three-dimensional network structure formed by self-assembly.
  • the material of the second protective layer includes an aromatic hydrocarbon derivative having a carboxylic acid amide group.
  • the aromatic hydrocarbon derivative having a carboxylic acid amide group includes at least one of the following chemical structural formulas:
  • R represents an alkane group with a carbon chain number between 1 and 8
  • x is the number of carboxylic acid amide groups
  • y is the number of carboxylic acid amide groups, where 1 ⁇ x ⁇ 3, 1 ⁇ y ⁇ 2, 1 ⁇ z ⁇ 2.
  • the two carboxylic acid amide groups in formula (1) are meta-substituted or para-substituted.
  • the two carboxylic acid amide groups in the formula (2) are meta-substituted or para-substituted.
  • the aromatic hydrocarbon derivative having a carboxylic acid amide group includes:
  • the display panel further includes:
  • An encapsulation layer covers the second protective layer, and the encapsulation layer includes at least one inorganic layer and at least one organic layer alternately stacked.
  • the material of the first protective layer includes polyvinylidene fluoride, polyphenylene sulfide, ethylene/vinyl alcohol copolymer, polyphthalamide, polyamide-imide , at least one of polyamide, polyetherimide, polymethyl methacrylate, and polyethylene terephthalate.
  • Embodiments of the present invention also provide a display panel, including:
  • the first protective layer covers at least a part of the light-emitting device, wherein the material of the first protective layer includes a polymer material; the polymer material includes polyvinylidene fluoride, polyphenylene sulfide , at least one of ethylene/vinyl alcohol copolymer, polyphthalamide, polyamide-imide, polyamide, polyetherimide, polymethyl methacrylate, polyethylene terephthalate A sort of;
  • the second protective layer covers the first protective layer, wherein the second protective layer has a cross-linked three-dimensional network structure, and the material of the second protective layer is made of carboxylic acid amide group
  • the aromatic hydrocarbon derivative is formed by self-assembly, and the aromatic hydrocarbon derivative with a carboxylic acid amide group comprises at least one of the following chemical structural formulas:
  • R represents an alkane group with a carbon chain number between 1 and 8
  • x is the number of carboxylic acid amide groups
  • y is the number of carboxylic acid amide groups, where 1 ⁇ x ⁇ 3, 1 ⁇ y ⁇ 2, 1 ⁇ z ⁇ 2.
  • An embodiment of the present invention provides a display panel and a manufacturing method thereof.
  • a first protective layer and a second protective layer are formed on the light-emitting device in sequence.
  • the second protective layer has good hydrophobicity, and the self-assembly process of small molecular organic compounds is a supramolecular assembly process, due to the supramolecular assembly structure. It has self-healing ability, so its resistance to mechanical damage is good; further, because the second protective layer has a polymer-like structure, it has high mechanical strength and good heat resistance.
  • the first protective layer has good light transmittance, and if the light-emitting device is physically damaged, the water vapor can reduce the damage to the light-emitting device by consuming the side groups of the first protective layer. Therefore, the display panel and the manufacturing method thereof provided by the embodiments of the present invention are used to improve the problem that the reliability of the display panel is deteriorated due to the water vapor entering the display panel.
  • FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention
  • Fig. 3 is the flow chart of step S3 in Fig. 2;
  • FIG. 4 is a characterization diagram of a scanning electron microscope of a second protective layer provided in an embodiment of the present invention.
  • FIG. 5 is a characterization diagram of an infrared spectrum of a second protective layer provided in an embodiment of the present invention.
  • FIG. 6 is a characterization diagram of the ultraviolet spectrum of the second protective layer provided by the embodiment of the present invention.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • an embodiment of the present invention provides a method for manufacturing a display panel, including the following steps:
  • Step S1 providing a light-emitting device 201
  • the light-emitting device 201 includes a substrate (not shown in the figure), a driving circuit layer (not shown in the figure) disposed on the substrate, and a light-emitting functional layer (not shown in the figure) electrically connected to the driving circuit layer.
  • the light-emitting functional layer may include an anode, a light-emitting layer, a cathode, and a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like.
  • the present application does not limit the structure and type of the light emitting device 201 .
  • Step S2 coating a polymer solution on the light-emitting device 201, and performing a first annealing treatment on the light-emitting device after coating the polymer solution to form a first protective layer;
  • the polymer solution is coated on the light-emitting device 201 by means of spin coating, drop coating or blade coating, and then the light-emitting device coated with the polymer solution is subjected to a first annealing treatment to form the first protective layer 202 .
  • the annealing temperature is between 30 degrees Celsius and 120 degrees Celsius.
  • the first protective layer 202 is attached to the first surface of the light emitting device 201 .
  • the molecular weight of the first protective layer 202 is between 20000 g/mol (g/mol) and 50000 g/mol (g/mol), and the polymer dispersion index PDI of the first protective layer 202 is less than or equal to 1.06.
  • the material of the first protective layer 202 includes polyvinylidene fluoride, polyphenylene sulfide, ethylene/vinyl alcohol copolymer, polyphthalamide, polyamide-imide, polyamide, polyetherimide, polyamide Polymer materials such as methyl methacrylate and polyethylene terephthalate.
  • the first protective layer 202 may be formed by anionic polymerization.
  • Step S3 coating an organic compound solution on the first protective layer 202 , so that the organic compound solution self-assembles on the first protective layer 202 to form a second protective layer 203 , and the second protective layer 203 has a cross-linked three-dimensional network structure.
  • step S3 includes:
  • Step S31 Disperse the organic compound in the solvent, and adjust the pH of the solution to be acidic to form the above-mentioned organic compound solution;
  • the organic compounds include aromatic hydrocarbon derivatives having carboxyl amide groups, and the aromatic hydrocarbons include at least one of monocyclic aromatic hydrocarbons composed of benzene rings and polycyclic aromatic hydrocarbons composed of triphenylene and hexabenzocoronene.
  • the organic compound includes at least one of the compounds represented by the following chemical structural formulas:
  • R represents an alkane group with a carbon chain number between 1 and 8
  • x is the number of carboxylic acid amide groups
  • y is the number of carboxylic acid amide groups, where 1 ⁇ x ⁇ 3, 1 ⁇ y ⁇ 2, 1 ⁇ z ⁇ 2.
  • R is one of methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl
  • the type of R on the carboxylic acid amide group on the aromatic hydrocarbon may be the same or different.
  • x includes 1, 2, and 3
  • y includes 1 and 2
  • z includes 1 and 2.
  • Solvents include N-methylpyrrolidone, dimethylacetamide, and the like.
  • the pH of the organic compound solution is between 3 and 7, preferably, the pH of the organic compound solution is between 5 and 6.
  • the mass concentration of the organic compound solution is between 1% and 20%.
  • Step S32 coating the organic compound solution on the first protective layer 202, so that the organic compound self-assembles on the surface of the first protective layer 202 to form a one-dimensional structure;
  • the organic compound solution is coated on the first protective layer 202 by means of spin coating, drop coating or blade coating, and hydrogen ions in the compound solution induce molecular nucleation and chain growth to form a one-dimensional structure.
  • Step S33 Perform a second annealing process on the one-dimensional structure to form a second protective layer 203, wherein the annealing temperature is between 25 degrees Celsius and 70 degrees Celsius, and the second protective layer 203 includes a cross-linked three-dimensional network structure.
  • the second protective layer 203 has a highly cross-linked three-dimensional network structure.
  • the thickness of the second protective layer can be controlled by controlling the coating time of the organic compound solution and the concentration of the organic compound solution.
  • step S4 is also included:
  • An encapsulation layer 204 is formed on the second protective layer 203, and the encapsulation layer 204 includes at least one inorganic layer and at least one organic layer which are alternately stacked.
  • the inorganic layer may be selected from inorganic materials such as aluminum oxide, silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, titanium oxide, zirconium oxide, zinc oxide, and the like.
  • the organic layer is selected from organic materials such as epoxy resin, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), polyacrylate and the like.
  • the encapsulation layer 204 is a laminated structure of an aluminum oxide film, a polypropylene film and a silicon nitride film that are laminated in sequence. It should be noted that, in the embodiment of the present invention, the first protective layer 202 and the second protective layer 203 can be used alone as the thin film encapsulation structure of the light emitting device 201 , or can be used together with the encapsulation layer 204 .
  • the display panel 200 can be an active light-emitting display panel, such as an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panel, an active-matrix organic light-emitting diode (Active-matrix organic light-emitting diode, AMOLED) display panel, a passive matrix organic light-emitting diode (AMOLED) display panel.
  • OLED Organic Light-Emitting Diode
  • AMOLED active-matrix organic light-emitting diode
  • AMOLED passive matrix organic light-emitting diode
  • Light-emitting diode (Passive matrix OLED) display panel quantum dot organic light-emitting diode (Quantum Dot Light Emitting Diodes, QLED) display panel, etc.
  • the display panel 200 includes a light emitting device 201 , a first protective layer 202 and a second protective layer 203 .
  • the light-emitting device 201 includes a substrate (not shown in the figure), a driving circuit layer (not shown in the figure) disposed on the substrate, and a light-emitting functional layer (not shown in the figure) electrically connected to the driving circuit layer.
  • the light emitting device 201 includes an organic light emitting diode display device.
  • the light-emitting functional layer may include an anode, a light-emitting layer, a cathode, and a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like.
  • the present application does not limit the structure and type of the light emitting device 201 .
  • the first protective layer 202 covers at least a part of the light emitting device 201 , wherein the material of the first protective layer 202 includes a polymer material. In this embodiment of the present invention, the first protective layer 202 may only cover the light-emitting functional layer; or the first protective layer 202 may completely cover the entire substrate.
  • the molecular weight of the first protective layer 202 is between 20000 g/mol (gram/mol) and 50000 g/mol (gram/mol), and the polymer dispersion index PDI of the first protective layer 202 is less than or equal to 1.06.
  • the material of the first protective layer 202 includes polyvinylidene fluoride, polyphenylene sulfide, ethylene/vinyl alcohol copolymer, polyphthalamide, polyamide-imide, polyamide, polyetherimide, polyamide Polymer materials such as methyl methacrylate and polyethylene terephthalate.
  • the first protective layer 202 provided in the embodiment of the present invention has better light transmittance and better adhesion with the light emitting device 201, thereby protecting the light emitting device 201 from being corroded by water vapor.
  • the second protective layer 203 covers the first protective layer 202.
  • the second protective layer 203 is formed by self-assembly of organic compounds and has a cross-linked three-dimensional network structure. Wherein, the second protective layer 203 has self-healing ability, and the material of the second protective layer 203 includes an aromatic hydrocarbon derivative having a carboxylic acid amide group.
  • the aromatic hydrocarbons include at least one of monocyclic aromatic hydrocarbons composed of benzene rings and polycyclic aromatic hydrocarbons composed of triphenylene and hexabenzocoronene.
  • the aromatic hydrocarbon derivative with a carboxylic acid amide group includes at least one of the following chemical structural formulas:
  • R represents an alkane group with a carbon chain number between 1 and 8
  • x is the number of carboxylic acid amide groups
  • y is the number of carboxylic acid amide groups, where 1 ⁇ x ⁇ 3, 1 ⁇ y ⁇ 2, 1 ⁇ z ⁇ 2.
  • aromatic hydrocarbon derivatives with a carboxylic acid amide group include:
  • the first protective layer 202 and the second protective layer 203 can be used alone as the thin film encapsulation structure of the light emitting device 201 , or can be used together with the encapsulation layer 204 .
  • the display panel 200 further includes an encapsulation layer 204 , and the encapsulation layer 204 includes at least one inorganic layer and at least one organic layer which are alternately stacked.
  • the inorganic layer may be selected from inorganic materials such as aluminum oxide, silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, titanium oxide, zirconium oxide, zinc oxide, and the like.
  • the organic layer is selected from organic materials such as epoxy resin, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), polyacrylate and the like.
  • the encapsulation layer 204 is a laminated structure of an aluminum oxide film, a polypropylene film and a silicon nitride film that are laminated in sequence.
  • a polymer is used as the first protective layer of the light-emitting device, and then a second protective layer having a cross-linked three-dimensional network structure is formed by self-assembly of organic compounds. Due to the randomness of small molecules in the growth process, the second protective layer has good hydrophobicity, and the self-assembly process of organic compounds is a supramolecular assembly process. Since the supramolecular assembly structure has self-healing ability, it is resistant to mechanical damage. Good performance; further, because the second protective layer has a polymer-like structure, it has high mechanical strength and good heat resistance.
  • the first protective layer has good light transmittance, and if the light-emitting device is physically damaged, the water vapor can reduce the damage to the light-emitting device by consuming the side groups of the first protective layer.
  • an encapsulation layer is arranged on the second protective layer, which can further prevent water and oxygen from eroding the light-emitting device.
  • the nitrogen atom and the oxygen atom in the compound 1 have lone pair electrons, the unbonded electron pair in the nitrogen atom and the oxygen atom interacts with each other, And under acidic conditions, molecular nucleation and chain growth are induced to form one-dimensional structures.
  • a second annealing treatment a three-dimensional network structure with a high degree of crosslinking is formed to obtain the second protective layer 203 .
  • the second protective layer 203 is characterized by scanning electron microscopy, Fourier infrared spectroscopy and ultraviolet spectroscopy.
  • FIG. 4 is a scanning electron microscope image of compound 1 self-assembling to form the second protective layer 203 .
  • the second protective layer 203 formed by self-assembly of compound 1 is a highly cross-linked three-dimensional network film, and the network film is fibrous. Due to its random growth, the obtained second protective layer 203 has good properties. It is hydrophobic, and the self-assembly process of compound 1 is a supramolecular assembly process. Since the supramolecular assembly structure has self-healing ability, its anti-mechanical damage performance is good; further, because the second protective layer 203 has a polymer-like structure, Therefore, it has high mechanical strength and good heat resistance.
  • FIG. 5 is an infrared spectrum diagram of compound 1 self-assembling to form the second protective layer 203 .
  • the curve 1 is the infrared spectrum curve of the compound 1
  • the curve 2 is the infrared spectrum curve of the second protective layer 203 formed by the self-assembly of the compound 1. It can be seen from Fig. 5 that the blue-shifted peak at the wavenumber of 1649 cm -1 is shifted to 1627 cm -1 , indicating the formation of hydrogen bonds during the self-assembly process.
  • FIG. 6 is an ultraviolet spectrum diagram of compound 1 self-assembled to form the second protective layer 203 .
  • Curves a, b, c, and d are the UV spectra of compound 1 at 65 degrees Celsius, 45 degrees Celsius, 25 degrees Celsius, and 5 degrees Celsius, respectively. It can be seen from the figure that during the self-assembly process of compound 1, as the temperature decreases, compound 1 is slowly assembled and blue-shifted during the assembly process (from 65 °C to 5 °C), and the peak of the second protective layer 203 is formed. The deformation is wider, indicating that compound 1 has self-assembled to form a highly cross-linked three-dimensional network structure.
  • the second protective layer 203 has a strong absorption peak in the ultraviolet light band of 190 nm to 280 nm, that is to say, the second protective layer 203 can further reduce the absorption of ultraviolet light by the light-emitting device, thereby improving the display panel. stability.
  • An embodiment of the present invention provides a display panel and a manufacturing method thereof.
  • a first protective layer and a second protective layer are formed on the light-emitting device in sequence.
  • the second protective layer has good hydrophobicity, and the self-assembly process of small molecular organic compounds is a supramolecular assembly process, due to the supramolecular assembly structure. It has self-healing ability, so its mechanical damage performance is good; further, because the second protective layer has a polymer-like structure, it has high mechanical strength and good heat resistance.
  • the first protective layer has good light transmittance, and if the light-emitting device is physically damaged, the water vapor can reduce the damage to the light-emitting device by consuming the side groups of the first protective layer. Therefore, the display panel and the manufacturing method thereof provided by the embodiments of the present invention are used to improve the problem that the reliability of the display panel is deteriorated due to the water vapor entering the display panel.
  • an encapsulation layer is arranged on the second protective layer, which can further prevent water and oxygen from eroding the light-emitting device.

Abstract

一种显示面板及其制作方法，显示面板的制作方法包括以下步骤：（S1）提供一发光器件（201）；（S2）在发光器件（201）上涂布聚合物溶液，并将涂布聚合物溶液后的发光器件（201）进行第一次退火处理，以形成第一保护层（202）；（S3）在第一保护层（202）上涂布有机化合物溶液，使有机化合物溶液在第一保护层（202）上自组装形成第二保护层（203），第二保护层（203）具有交联的三维网络结构。

Description

显示面板及其制作方法 技术领域
本发明涉及显示技术领域，尤其涉及一种显示面板及其制作方法。
背景技术
现有的有机发光二极管(Organic Light-Emitting Diode，OLED)显示面板一般通过在OLED器件的上方设置封装盖板以对OLED器件进行封装。现有的显示面板包括基板、显示器件以及用于封装显示器件的封装基板、框胶以及位于封装区域最外层的疏水挡墙。然而，现有封装结构和显示器件的接触性较差，水汽容易进入到显示面板中，导致显示面板性能低，可靠度性能差。
故，有必要提出一种新的技术方案，以解决上述技术问题。
技术问题
本发明实施例提供一种显示面板及其制作方法，用于改善由于水汽进入显示面板内造成显示面板的可靠性能变差的问题。
技术解决方案
本发明实施例提供一种显示面板的制作方法，包括以下步骤：
提供一发光器件；
在所述发光器件上涂布聚合物溶液，并将涂布所述聚合物溶液后的所述发光器件进行第一次退火处理，以形成第一保护层；
在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成第二保护层，所述第二保护层具有交联的三维网络结构。
在本发明实施例提供的显示面板的制作方法中，在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成第二保护层的步骤包括：
将有机化合物分散在溶剂内，并将溶液的pH调节至酸性，以形成所述有机化合物溶液；
将所述有机化合物溶液涂布在所述第一保护层上，使得所述有机化合物在所述第一保护层的表面进行自组装，以形成一维结构；
对所述一维结构进行第二次退火处理，以形成所述第二保护层，其中，退火温度介于25摄氏度至70摄氏度之间。
在本发明实施例提供的显示面板的制作方法中，所述有机化合物溶液的pH介于3至7之间。
在本发明实施例提供的显示面板的制作方法中，所述有机化合物包括具有羧酸酰胺基的芳香烃衍生物。
在本发明实施例提供的显示面板的制作方法中，所述有机化合物包括以下化学结构式所表示的化合物中的至少一种：
Figure PCTCN2020124379-appb-000001
Figure PCTCN2020124379-appb-000002
其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
在本发明实施例提供的显示面板的制作方法中，当所述x＝2时，式(1)中两个所述羧酸酰胺基为间位取代或对位取代；当所述y＝2时，式(2)中两个所述羧酸酰胺基为间位取代或对位取代；当所述z＝2时，式(3)中两个所述羧酸酰胺基为间位取代。
在本发明实施例提供的显示面板的制作方法中，所述有机化合物包括：
Figure PCTCN2020124379-appb-000003
在本发明实施例提供的显示面板的制作方法中，所述在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成 第二保护层的步骤之后，还包括：
在第二保护层上形成封装层，所述封装层包括交替层叠设置的至少一无机层和至少一有机层。
在本发明实施例提供的显示面板的制作方法中，所述第一保护层通过阴离子聚合形成。
本发明实施例还提供一种显示面板，包括：
发光器件；
第一保护层，所述第一保护层覆盖所述发光器件的至少一部分，其中，所述第一保护层的材料包括聚合物材料；
第二保护层，所述第二保护层覆盖所述第一保护层，其中，所述第二保护层具有通过自组装形成的交联的三维网络结构。
在本发明实施例提供的显示面板中，所述第二保护层的材料包括具有羧酸酰胺基的芳香烃衍生物。
在本发明实施例提供的显示面板中，所述具有羧酸酰胺基的芳香烃衍生物包括以下化学结构式中的至少一种：
Figure PCTCN2020124379-appb-000004
Figure PCTCN2020124379-appb-000005
其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
在本发明实施例提供的显示面板中，当所述x＝2时，式(1)中两个所述羧酸酰胺基为间位取代或对位取代。
在本发明实施例提供的显示面板中，当所述y＝2时，式(2)中两个所述羧 酸酰胺基为间位取代或对位取代。
在本发明实施例提供的显示面板中，当所述z＝2时，式(3)中两个所述羧酸酰胺基为间位取代。
在本发明实施例提供的显示面板中，所述具有羧酸酰胺基的芳香烃衍生物包括：
Figure PCTCN2020124379-appb-000006
在本发明实施例提供的显示面板中，所述显示面板还包括：
封装层，所述封装层覆盖所述第二保护层，所述封装层包括交替层叠设置的至少一无机层和至少一有机层。
在本发明实施例提供的显示面板中，所述第一保护层的材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯中的至少一种。
本发明实施例还提供一种显示面板，其中，包括：
发光器件；
第一保护层，所述第一保护层覆盖所述发光器件的至少一部分，其中，所述第一保护层的材料包括聚合物材料；所述聚合物材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯中的至少一种；
第二保护层，所述第二保护层覆盖所述第一保护层，其中，所述第二保护层具有交联的三维网络结构，所述第二保护层的材料由具有羧酸酰胺基的芳香烃衍生物自组装形成，所述具有羧酸酰胺基的芳香烃衍生物包括以下化学结构式中的至少一种：
Figure PCTCN2020124379-appb-000007
Figure PCTCN2020124379-appb-000008
其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
有益效果
本发明实施例提供一种显示面板及其制作方法，在本发明提供的显示面板的制作方法中，依次在发光器件上形成第一保护层和第二保护层，由于第二保护层是通过小分子有机化合物自组装形成的，由于小分子在生长过程中的随机性，因此第二保护层具有良好的疏水性，并且小分子有机化合物自组装过程为超分子的组装过程，由于超分子组装结构具有自修复能力，因此其抗机械破坏性能好；进一步的，因为第二保护层具有类聚合物的结构，因此其机械强度高、耐热性好。而第一保护层具有良好的透光性，并且，若发光器件受到物理破坏，水汽可以通过消耗第一保护层的侧基来减缓对发光器件的损害。因此，本发明实施例提供的显示面板及其制作方法用于改善由于水汽进入显示面板内造成显示面板的可靠性能变差的问题。
附图说明
图1为本发明实施例提供的显示面板的结构示意图；
图2为本发明实施例提供的显示面板的制作方法的流程图；
图3为图2中步骤S3的流程图；
图4为本发明实施例提供的第二保护层的扫描电子显微镜的表征图；
图5为本发明实施例提供的第二保护层的红外光谱的表征图；
图6为本发明实施例提供的第二保护层的紫外光谱的表征图。
本发明的实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，请参照附图中的图式，其中相同的组件符号代表相同的组件，以下的说明是基于所示的本发明具体实施例，其不应被视为限制本发明未在此详述的其他具体实施例。本说明书所使用的词语“实施例”意指实例、 示例或例证。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
请结合图1和图2，本发明实施例提供一种显示面板的制作方法，包括以下步骤：
步骤S1：提供一发光器件201；
其中，发光器件201包括基板(图中未示出)，设置于基板上的驱动电路层(图中未示出)以及电连接于驱动电路层上的发光功能层(图中未示出)。
发光功能层可以包括阳极、发光层、阴极以及空穴注入层、空穴传输层、电子传输层和电子注入层等。本申请对发光器件201的结构和类型不做限定。
步骤S2：在发光器件201上涂布聚合物溶液，并将涂布聚合物溶液后的发光器件进行第一次退火处理，以形成第一保护层；
具体的，通过旋涂、滴涂或刮涂等方式在发光器件201上涂布聚合物溶液，然后将涂布聚合物溶液后的发光器件进行第一次退火处理，以形成第一保护层202。其中，退火温度介于30摄氏度至120摄氏度之间。第一保护层202贴附于发光器件201的第一表面。其中，第一保护层202的分子量介于20000g/mol(克/摩尔)至50000g/mol(克/摩尔)之间，且第一保护层202的聚合物分散指数PDI≤1.06。第一保护层202的材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯等聚合物材料。可选的，在一实施例中，第一保护层202可以通过阴离子聚合形成。
步骤S3：在第一保护层202上涂布有机化合物溶液，使有机化合物溶液在第一保护层202上自组装形成第二保护层203，第二保护层203具有交联的三维网络结构。
请参考图3，具体的，步骤S3包括：
步骤S31：将有机化合物分散在溶剂内，并将溶液的pH调节至酸性，以形 成上述有机化合物溶液；
其中，有机化合物包括具有羧基酰胺基的芳香烃衍生物，芳香烃包括由苯环组成的单环芳香烃以及由苯并菲和六苯并蔻组成的多环芳香烃中的至少一种。具体的，有机化合物包括以下化学结构式所表示的化合物中的至少一种：
Figure PCTCN2020124379-appb-000009
Figure PCTCN2020124379-appb-000010
其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。例如，R为甲基、乙基、丙基、丁基、戊基、己基、庚基或辛基中的一种，位于芳香烃上的羧酸酰胺基上R的种类可以相同也可以不同。x包括1、2和3，y包括1和2，z包括1和2。其中，当x＝2时，式(1)中两个羧酸酰胺基为间位取代或对位取代，当x＝3时，式(1)中三个羧酸酰胺基为1、3、5位取代；当y＝2时，式(2)中两个羧酸酰胺基为间位取代或对位取代；当z＝2时，式(3)中两个羧酸酰胺基为间位取代。
溶剂包括N-甲基吡咯烷酮和二甲基乙酰胺等。有机化合物溶液的pH介于3至7之间，优选的，有机化合物溶液的pH介于5至6之间。有机化合物溶液的质量浓度介于1％至20％之间。
步骤S32：将有机化合物溶液涂布在第一保护层202上，使得有机化合物在第一保护层202的表面上进行自组装，以形成一维结构；
具体的，通过旋涂、滴涂或刮涂等方式在第一保护层202上涂布有机化合物溶液，化合物溶液中的氢离子诱导分子成核和链增长以形成一维结构。
步骤S33：对一维结构进行第二次退火处理，以形成第二保护层203，其中，退火温度介于25摄氏度至70摄氏度之间，第二保护层203包括交联的三维网 络结构。在一实施例中，第二保护层203具有高度交联的三维网络结构。
本发明实施例可以通过控制有机化合物溶液的涂布时间以及有机化合物溶液的浓度以控制第二保护层的厚度。
可选的，在步骤S3之后，还包括步骤S4：
在第二保护层203上形成封装层204，封装层204包括交替层叠设置的至少一无机层和至少一有机层。无机层可以选自氧化铝、氧化硅、氮化硅、氮氧化硅、碳化硅、氧化钛、氧化锆、氧化锌等的无机材料。有机层选自环氧树脂、聚酰亚胺(PI)、聚对苯二甲酸乙二醇酯(PET)、聚碳酸酯(PC)、聚乙烯(PE)、聚丙烯酸酯等的有机材料。例如，封装层204为依次层叠的氧化铝薄膜、聚丙烯薄膜和氮化硅薄膜的叠层结构。需要说明的是，在本发明实施方式中，第一保护层202和第二保护层203可以单独作为发光器件201的薄膜封装结构使用，也可以与封装层204配合使用。
请继续参考图1，本发明实施例还提供一种显示面板200。显示面板200可以为主动发光型显示面板，例如有机发光二极管(Organic Light-Emitting Diode，OLED)显示面板，主动矩阵有机发光二极管(Active-matrix organic light-emitting diode，AMOLED)显示面板，被动矩阵有机发光二极管(Passive matrix OLED)显示面板、量子点有机发光二极管(Quantum Dot Light Emitting Diodes，QLED)显示面板等。
显示面板200包括发光器件201、第一保护层202和第二保护层203。其中，发光器件201包括基板(图中未示出)，设置于基板上的驱动电路层(图中未示出)以及电连接于驱动电路层上的发光功能层(图中未示出)。
发光器件201包括有机发光二极管显示器件。发光功能层可以包括阳极、发光层、阴极以及空穴注入层、空穴传输层、电子传输层和电子注入层等。本申请对发光器件201的结构和类型不做限定。
第一保护层202覆盖发光器件201的至少一部分，其中，第一保护层202的材料包括聚合物材料。在本发明实施例中，第一保护层202可以只覆盖发光功能层；或者第一保护层202完全包覆整个基板。第一保护层202的分子量介于20000g/mol(克/摩尔)至50000g/mol(克/摩尔)之间，且第一保护层202的聚合物分散指数PDI≤1.06。第一保护层202的材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯等聚合物材料。本发明实施例提供的第一保护层202透光性能较好，并且与发光器件201具有较好的粘附力，从而保护发光器件201免于受到水汽的侵蚀。
第二保护层203覆盖第一保护层202，第二保护层203通过有机化合物自组装形成，具有交联的三维网络结构。其中，第二保护层203具有自修复能力，第二保护层203的材料包括具有羧酸酰胺基的芳香烃衍生物。
其中，芳香烃包括由苯环组成的单环芳香烃以及由苯并菲和六苯并蔻组成的多环芳香烃中的至少一种。
具体的，具有羧酸酰胺基的芳香烃衍生物包括以下化学结构式中的至少一 种：
Figure PCTCN2020124379-appb-000011
Figure PCTCN2020124379-appb-000012
其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
具体的，具有羧酸酰胺基的芳香烃衍生物包括：
Figure PCTCN2020124379-appb-000013
在本实施方式中，第一保护层202和第二保护层203可以单独作为发光器件201的薄膜封装结构使用，也可以与封装层204配合使用。请参考图1，在一个实施方式中，显示面板200还包括封装层204，封装层204包括交替层叠设置的至少一无机层和至少一有机层。无机层可以选自氧化铝、氧化硅、氮化硅、氮氧化硅、碳化硅、氧化钛、氧化锆、氧化锌等的无机材料。有机层选自环氧树脂、聚酰亚胺(PI)、聚对苯二甲酸乙二醇酯(PET)、聚碳酸酯(PC)、聚乙烯(PE)、聚 丙烯酸酯等的有机材料。例如，封装层204为依次层叠的氧化铝薄膜、聚丙烯薄膜和氮化硅薄膜的叠层结构。
在本发明实施例提供的显示面板中，利用聚合物作为发光器件的第一保护层，再通过有机化合物自组装形成具有交联的三维网络结构的第二保护层。由于小分子在生长过程中的随机性，因此第二保护层具有良好的疏水性，并且有机化合物自组装过程为超分子的组装过程，由于超分子组装结构具有自修复能力，因此其抗机械破坏性能好；进一步的，因为第二保护层具有类聚合物的结构，因此其机械强度高、耐热性好。而第一保护层具有良好的透光性，并且，若发光器件受到物理破坏，水汽可以通过消耗第一保护层的侧基来减缓对发光器件的损害。另外，本发明实施例在第二保护层上设置封装层，可以进一步防止水氧侵蚀发光器件。
下面，参考具体实施例对本申请的显示面板及其制造方法进行说明。首先，将质量为1.0克的(1,3,5-三正戊酸乙酰胺基)苯，即化合物1(其分子结构式见式1)溶解于在N-甲基吡咯烷酮中，配制质量浓度为1％至20％的有机化合物溶液，再利用盐酸调节有机化合物溶液的pH，使得化合物1溶液的pH介于3至7之间。然后，将化合物1溶液涂布至第一保护层202的表面，由于化合物1中的氮原子和氧原子具有孤对电子，因此，氮原子和氧原子中未成键的电子对之间相互作用，并且在酸性条件下诱导分子成核和链增长以形成一维结构。接下来，通过第二次退火处理，形成具有高度交联的三维网络结构获得第二保护层203。
化学结构式为：
Figure PCTCN2020124379-appb-000014
进一步的，本发明实施例利用扫描电子显微镜、傅里叶红外光谱及紫外光谱技术对第二保护层203进行表征。
请参考图4，图4为化合物1自组装形成第二保护层203的扫描电镜图。由图可知，利用化合物1自组装形成的第二保护层203为高度交联的三维网络薄膜，该网络薄膜呈纤维状，由于其生长的随机性，因此获得的第二保护层203具有良好的疏水性，并且化合物1自组装过程为超分子的组装过程，由于超分子组装结构具有自修复能力，因此其抗机械破坏性能好；进一步的，因为第二保护层203具有类聚合物的结构，因此其机械强度高、耐热性好。
进一步的，请参考图5，图5为化合物1自组装形成第二保护层203的红 外光谱图。其中，曲线1为化合物1的红外光谱曲线，曲线2为化合物1自组装形成的第二保护层203的红外光谱曲线。由图5可知，波数(Wavenumber)为1649cm -1处的峰蓝移至1627cm -1，表明了自组装过程中氢键的形成。
请参考图6，图6为化合物1自组装形成第二保护层203的紫外光谱图。曲线a、b、c、d分别为化合物1在65摄氏度、45摄氏度、25摄氏度和5摄氏度下的紫外光谱图。由图可知，在化合物1进行自组装过程中，随着温度的降低，组装过程中(从65℃降到5℃)化合物1慢慢组装并发生蓝移，形成的第二保护层203的峰形变宽，说明化合物1发生了自组装，形成高度交联的三维网络结构。由此可知，第二保护层203在190纳米至280纳米的紫外光波段具有较强的吸收峰，也就是说，第二保护层203可以进一步削减发光器件对紫外光的吸收，从而提高显示面板的稳定性。
本发明实施例提供一种显示面板及其制作方法，在本发明提供的显示面板的制作方法中，依次在发光器件上形成第一保护层和第二保护层，由于第二保护层是通过小分子有机化合物自组装形成的，由于小分子在生长过程中的随机性，因此第二保护层具有良好的疏水性，并且小分子有机化合物自组装过程为超分子的组装过程，由于超分子组装结构具有自修复能力，因此其机械破坏性能好；进一步的，因为第二保护层具有类聚合物的结构，因此其机械强度高、耐热性好。而第一保护层具有良好的透光性，并且，若发光器件受到物理破坏，水汽可以通过消耗第一保护层的侧基来减缓对发光器件的损害。因此，本发明实施例提供的显示面板及其制作方法用于改善由于水汽进入显示面板内造成显示面板的可靠性能变差的问题。
另外，本发明实施例在第二保护层上设置封装层，可以进一步防止水氧侵蚀发光器件。
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 (19)

  1. 一种显示面板的制作方法，其中，包括以下步骤：
    提供一发光器件；
    在所述发光器件上涂布聚合物溶液，并将涂布所述聚合物溶液后的所述发光器件进行第一次退火处理，以形成第一保护层；
    在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成第二保护层，所述第二保护层具有交联的三维网络结构。
  2. 根据权利要求1所述的显示面板的制作方法，其中，在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成第二保护层的步骤包括：
    将有机化合物分散在溶剂内，并将溶液的pH调节至酸性，以形成所述有机化合物溶液；
    将所述有机化合物溶液涂布在所述第一保护层上，使得所述有机化合物在所述第一保护层的表面进行自组装，以形成一维结构；
    对所述一维结构进行第二次退火处理，以形成所述第二保护层，其中，退火温度介于25摄氏度至70摄氏度之间。
  3. 根据权利要求2所述的显示面板的制作方法，其中，所述有机化合物溶液的pH介于3至7之间。
  4. 根据权利要求2所述的显示面板的制作方法，其中，所述有机化合物包括具有羧酸酰胺基的芳香烃衍生物。
  5. 根据权利要求4所述的显示面板的制作方法，其中，所述有机化合物包括以下化学结构式所表示的化合物中的至少一种：
    Figure PCTCN2020124379-appb-100001
    Figure PCTCN2020124379-appb-100002
    其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
  6. 根据权利要求5所述的显示面板的制作方法，其中，当所述x＝2时，式(1)中两个所述羧酸酰胺基为间位取代或对位取代；当所述y＝2时，式(2)中两个所述羧酸酰胺基为间位取代或对位取代；当所述z＝2时，式(3)中两个所述羧酸酰胺基为间位取代。
  7. 根据权利要求5所述的显示面板的制作方法，其中，所述有机化合物包括：
    Figure PCTCN2020124379-appb-100003
  8. 根据权利要求1所述的显示面板的制作方法，其中，所述在所述第一保护层上涂布有机化合物溶液，使所述有机化合物溶液在所述第一保护层上自组装形成第二保护层的步骤之后，还包括：
    在第二保护层上形成封装层，所述封装层包括交替层叠设置的至少一无机层和至少一有机层。
  9. 根据权利要求1所述的显示面板的制作方法，其中，所述第一保护层通过阴离子聚合形成。
  10. 一种显示面板，其中，包括：
    发光器件；
    第一保护层，所述第一保护层覆盖所述发光器件的至少一部分，其中，所述第一保护层的材料包括聚合物材料；
    第二保护层，所述第二保护层覆盖所述第一保护层，其中，所述第二保护层具有通过自组装形成的交联的三维网络结构。
  11. 根据权利要求10所述的显示面板，其中，所述第二保护层的材料包括具有羧酸酰胺基的芳香烃衍生物。
  12. 根据权利要求11所述的显示面板，其中，所述具有羧酸酰胺基的芳香烃衍生物包括以下化学结构式中的至少一种：
    Figure PCTCN2020124379-appb-100004
    Figure PCTCN2020124379-appb-100005
    其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
  13. 根据权利要求12所述的显示面板，其中，当所述x＝2时，式(1)中两个所述羧酸酰胺基为间位取代或对位取代。
  14. 根据权利要求12所述的显示面板，其中，当所述y＝2时，式(2)中两个所述羧酸酰胺基为间位取代或对位取代。
  15. 根据权利要求12所述的显示面板，其中，当所述z＝2时，式(3)中两个所述羧酸酰胺基为间位取代。
  16. 根据权利要求12所述的显示面板，其中，所述具有羧酸酰胺基的芳香 烃衍生物包括：
    Figure PCTCN2020124379-appb-100006
  17. 根据权利要求10所述的显示面板，其中，所述显示面板还包括：
    封装层，所述封装层覆盖所述第二保护层，所述封装层包括交替层叠设置的至少一无机层和至少一有机层。
  18. 根据权利要求10所述的显示面板，其中，所述第一保护层的材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯中的至少一种。
  19. 一种显示面板，其中，包括：
    发光器件；
    第一保护层，所述第一保护层覆盖所述发光器件的至少一部分，其中，所述第一保护层的材料包括聚合物材料；所述聚合物材料包括聚偏氟乙烯、聚苯硫醚、乙烯/乙烯醇共聚物、聚邻苯二甲酰胺、聚酰胺-酰亚胺、聚酰胺、聚醚酰亚胺、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯中的至少一种；
    第二保护层，所述第二保护层覆盖所述第一保护层，其中，所述第二保护层具有交联的三维网络结构，所述第二保护层的材料由具有羧酸酰胺基的芳香烃衍生物自组装形成，所述具有羧酸酰胺基的芳香烃衍生物包括以下化学结构式中的至少一种：
    Figure PCTCN2020124379-appb-100007
    Figure PCTCN2020124379-appb-100008
    其中，R代表碳链数目为1至8之间的烷烃基，x为羧酸酰胺基的数量，y为羧酸酰胺基的数量，其中，1≤x≤3，1≤y≤2，1≤z≤2。
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