Display panel, manufacturing method thereof, and electronic device

Abstract

This application provides a display panel, its manufacturing method, and an electronic device. The manufacturing method includes sequentially fabricating an array of anode layers on one side of a substrate; fabricating a pixel definition layer covering the substrate and the peripheral areas of each anode layer, such that the pixel openings of the pixel definition layer expose the central area of ​​the anode layer; and forming a polymer film on the surface of the pixel definition layer away from the anode layer under first design conditions, where the first design conditions include oxygen. In this application embodiment, the formation of the polymer film requires oxygen consumption, which helps reduce oxygen infiltration, thereby reducing the oxygen concentration on the anode surface, thus reducing the surface voltage of the display panel and improving its lifespan.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel and its manufacturing method, and an electronic device. Background Technology

[0002] In recent years, organic light-emitting diode (OLED) panels have become the main research and development direction in the display field due to their characteristics such as self-illumination, wide viewing angle, wide color gamut, high contrast, thinness, foldability, flexibility, and portability. Moreover, the end products using OLED panels are becoming more and more diversified, and the usage environment of these products is placing increasingly higher demands on their performance.

[0003] The organic light-emitting materials in OLED panels are extremely sensitive to water and oxygen, which leads to the problem of short lifespan of OLED panels. Summary of the Invention

[0004] This application addresses the shortcomings of existing methods by proposing a display panel, its manufacturing method, and electronic equipment to solve the technical problem of the short lifespan of existing display panels.

[0005] In a first aspect, embodiments of this application provide a method for manufacturing a display panel, comprising:

[0006] An array of anode layers is sequentially fabricated on one side of the substrate;

[0007] A pixel definition layer is manufactured that covers the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer;

[0008] A polymer film is formed on the surface of the pixel definition layer away from the anode layer under first design conditions; the first design conditions include oxygen.

[0009] Optionally, a pixel definition layer is fabricated covering the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer, including:

[0010] A pixel definition layer is manufactured that covers the peripheral regions of the substrate and each of the anode layers, and a polyester material is coated on the surface of the pixel definition layer away from the anode layer, such that the pixel openings of the pixel definition layer expose the central region of the anode layer; the polyester material includes at least one functional group selected from naphthalene rings and unsaturated carbon-carbon double bonds.

[0011] Optionally, forming a polymer film on the surface of the pixel definition layer away from the anode layer, under first design conditions, includes:

[0012] The entire substrate is baked, causing the polyester material to react with oxygen in the environment to form the polymer film; the oxygen in the environment includes oxygen generated by at least one film layer, including the substrate and the pixel definition layer, during the baking process.

[0013] Optionally, the entire substrate is baked to allow the polyester material to react with oxygen in the environment to form the polymer film, including:

[0014] The entire substrate is baked so that the naphthalene ring of the polyester material reacts with the oxygen to form a first polymer, and / or the unsaturated carbon-carbon double bonds of the polyester material react with the oxygen to form a second polymer, and / or both the naphthalene ring and the unsaturated carbon-carbon double bonds of the polyester material react with the oxygen to form a third polymer.

[0015] The polymer film includes at least one polymer selected from the first polymer, the second polymer, and the third polymer.

[0016] Optionally, after the pixel definition layer is formed on the surface away from the anode layer and under the first design conditions, the method further includes:

[0017] An organic light-emitting layer and a cathode layer are sequentially fabricated on the side of the polyester material away from the pixel definition layer.

[0018] Optionally, the polyester material further includes hydroxyl groups;

[0019] And, forming a polymer film on the surface of the pixel definition layer away from the anode layer under the first design conditions, including:

[0020] The hydroxyl groups of the polyester material react with the pixel definition layer under ultraviolet light radiation and / or thermal radiation to generate a fourth polymer and a fifth polymer, and the polymer film includes the fourth polymer and the fifth polymer.

[0021] Optionally, a pixel definition layer is fabricated covering the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer, including:

[0022] A pixel definition layer is manufactured that covers the peripheral regions of the substrate and each of the anode layers and is doped with polyester material; the polyester material includes at least one functional group selected from naphthalene rings and unsaturated carbon-carbon double bonds;

[0023] And, forming a polymer film on the surface of the pixel definition layer away from the anode layer under the first design conditions, including:

[0024] The entire substrate is baked, causing the polyester material in the pixel definition layer to react with oxygen in the environment, forming the polymer film on the surface of the pixel definition layer away from the anode layer; the oxygen in the environment includes oxygen generated by the substrate and at least one film layer in the pixel definition layer during the baking process.

[0025] Secondly, embodiments of this application provide a display panel, including: a display panel obtained based on any of the manufacturing methods described in the first aspect.

[0026] Thirdly, embodiments of this application provide an electronic device, including: a display panel as described in the second aspect.

[0027] The beneficial technical effects of the technical solutions provided in this application include:

[0028] The formation of the polymer film requires oxygen, which helps reduce oxygen penetration, thereby reducing the oxygen concentration on the anode surface, which in turn reduces the surface voltage of the display panel and extends its lifespan.

[0029] Furthermore, the unsaturated carbon-carbon double bond functional groups in polyester materials are easily oxidized, which improves the oxygen absorption capacity of the polyester material, helps reduce oxygen penetration, thereby reducing the water and oxygen content on the anode surface, and thus reducing the surface voltage of the display panel and extending its lifespan. Additionally, the naphthalene ring functional groups inherent in polyester materials can absorb ultraviolet light smaller than 380 nanometers. These naphthalene ring functional groups have strong ultraviolet absorption capabilities, which helps reduce the degradation of the pixel definition layer under ultraviolet radiation, thereby reducing the generation of acidic gases such as sulfur dioxide (SO2) and carbon dioxide (CO2). This helps protect the organic light-emitting layer, cathode, and anode, and further extends the lifespan of the display panel under ultraviolet radiation.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0033] Figure 2 A schematic cross-sectional view of the film layer after a polymer film is formed on the surface of the pixel definition layer away from the anode layer under first design conditions in a method for manufacturing a display panel according to an embodiment of this application.

[0034] Figure 3 A schematic cross-sectional view of the film layers after an organic light-emitting layer and a cathode layer are sequentially fabricated on the side of the polyester material away from the pixel definition layer, according to a method for manufacturing a display panel provided in this application.

[0035] Figure 4 In a method for manufacturing a display panel provided in this application, a pixel definition layer is manufactured covering the peripheral areas of the substrate and each anode layer, and a polyester material is coated on the surface of the pixel definition layer away from the anode layer, so that the pixel opening of the pixel definition layer exposes the central area of ​​the anode layer.

[0036] Figure 5 A schematic cross-sectional view of a film layer after manufacturing a pixel definition layer doped with polyester material, in a method for manufacturing a display panel according to an embodiment of this application.

[0037] Figure 6 In a method for manufacturing a display panel provided in this application embodiment, the entire substrate is baked, causing the polyester material in the pixel definition layer to react with oxygen in the environment, and a polymer film is generated on the surface of the pixel definition layer away from the anode layer. This is a schematic diagram of the cross-sectional view of the film layer.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-Substrate;

[0040] 2-Anode layer;

[0041] 3-Pixel definition layer; 31-Polyester material;

[0042] 4-Polymer membrane;

[0043] 5-Organic light-emitting layer;

[0044] 6-Cathode layer. Detailed Implementation

[0045] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0046] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term “and / or” as used herein refers to at least one of the items defined by the term; for example, “A and / or B” can be implemented as “A,” or as “B,” or as “A and B.”

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0048] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0049] The research and development approach of this application includes the following: In related technologies, the organic light-emitting layer of a display panel is extremely sensitive to water and oxygen molecules. Water and oxygen molecules act as traps, causing exciton quenching in the organic light-emitting layer, which is detrimental to hole injection and results in a relatively high surface voltage of the display panel. A high surface voltage accelerates the degradation of the display panel, thereby reducing its lifespan, for example, by 0.6%. Furthermore, under ultraviolet radiation, the lifespan of the display panel decreases by approximately 60%. This is because the material of the pixel definition layer is easily degraded under heat or ultraviolet radiation, producing acidic gases such as sulfur dioxide (SO2) and carbon dioxide (CO2). These acidic gases have a corrosive effect on the organic light-emitting layer, anode, and cathode, thus leading to a reduction in the display panel's lifespan.

[0050] This application provides a method for manufacturing a display panel, the process flow diagram of which is shown below. Figure 1 As shown, steps S1 to S3 are included:

[0051] S1: An array of anode layers 2 are sequentially fabricated on one side of substrate 1.

[0052] S2: Fabricate a pixel definition layer 3 covering the peripheral areas of the substrate 1 and each anode layer 2, such that the pixel openings of the pixel definition layer 3 expose the central area of ​​the anode layer 2.

[0053] S3: A polymer film 4 is formed on the surface of the pixel definition layer 3 away from the anode layer 2, and under first design conditions; the first design conditions include oxygen.

[0054] In this embodiment, Figure 2 This is a schematic cross-sectional view of the polymer film 4 formed on the surface of the pixel definition layer 3 away from the anode layer 2 under the first design conditions. The formation of the polymer film 4 consumes oxygen, which helps reduce oxygen infiltration, thereby lowering the oxygen concentration on the anode surface, reducing the surface voltage of the display panel, and extending the lifespan of the display panel. In this application, the oxygen consumption on the surface of the anode layer 2 during the formation of the polymer film 4 helps ensure the atmosphere on the surface of the anode layer 2, thus guaranteeing the work function of the anode.

[0055] The substrate 1 may include a substrate, a buffer layer, thin-film transistor array elements, and a planarization layer. The anode layer 2 may be a stacked structure of indium tin oxide, silver, and indium tin oxide.

[0056] Optionally, after step S3 above, the method further includes: sequentially fabricating an organic light-emitting layer 5 and a cathode layer 6 on the side of the polyester material 31 away from the pixel definition layer 3.

[0057] In this embodiment, Figure 3 This is a schematic cross-sectional view of the film layer after the organic light-emitting layer 5 and the cathode layer 6 are sequentially fabricated on the side of the polyester material 31 away from the pixel definition layer 3. Because oxygen is consumed during the formation of the polymer film 4, the normal function of the organic light-emitting layer 5 and the cathode layer 6 can be protected.

[0058] In one feasible embodiment, in step S2 above, a pixel definition layer 3 is fabricated covering the peripheral regions of the substrate 1 and each anode layer 2, such that the pixel openings of the pixel definition layer 3 expose the central region of the anode layer 2, including:

[0059] A pixel definition layer 3 is manufactured that covers the peripheral areas of the substrate 1 and each anode layer 2, and a polyester material 31 is coated on the surface of the pixel definition layer 3 away from the anode layer 2, so that the pixel opening of the pixel definition layer 3 exposes the central area of ​​the anode layer 2; the polyester material 31 includes at least one functional group selected from naphthalene ring and unsaturated carbon-carbon double bond.

[0060] In this embodiment, the unsaturated carbon-carbon double bond functional groups contained in the polyester material 31 are easily oxidized, which can improve the oxygen absorption capacity of the polyester material 31, reduce oxygen penetration, thereby reducing the water and oxygen content on the anode surface, and thus reducing the surface voltage of the display panel and extending the service life of the display panel. In addition, the naphthalene ring functional groups contained in the polyester material 31 can absorb ultraviolet light smaller than 380 nanometers. The naphthalene ring functional groups themselves have strong ultraviolet absorption capacity, which can help reduce the degradation of the pixel definition layer 3 under ultraviolet radiation, thereby reducing the generation of acidic gases such as sulfur dioxide (SO2) and carbon dioxide (CO2), thus helping to protect the organic light-emitting layer 5, cathode and anode, and extending the service life of the display panel under ultraviolet radiation.

[0061] Optionally, in step S3 above, forming a polymer film 4 on the surface of the pixel definition layer 3 away from the anode layer 2 and under the first design conditions includes:

[0062] The entire substrate 1 is baked, causing the polyester material 31 to react with oxygen in the environment to generate a polymer film 4; the oxygen in the environment includes oxygen generated by at least one film layer, such as the substrate 1 and the pixel definition layer 3, during baking.

[0063] In this embodiment, the entire substrate 1 is baked in a vacuum. The baking temperature is not less than 200°C and not more than 260°C. Baking the entire substrate 1 allows water to generate oxygen, releasing oxygen to a greater extent. During the baking process, the polyester material 31 can undergo an oxidation reaction with oxygen to consume it, which helps reduce the water and oxygen molecule content on the anode surface, thereby reducing the surface voltage of the display panel, reducing the degree of display panel degradation, and significantly improving the lifespan of the display panel, for example, by 27.9%.

[0064] In another feasible approach, step S2 above involves fabricating a pixel definition layer 3 covering the peripheral regions of the substrate 1 and each anode layer 2, such that the pixel openings of the pixel definition layer 3 expose the central region of the anode layer 2, including:

[0065] A pixel definition layer 3 is fabricated covering the peripheral areas of the substrate 1 and each anode layer 2 and doped with polyester material 31, such that the pixel opening of the pixel definition layer 3 exposes the central area of ​​the anode layer 2; the polyester material 31 includes at least one functional group selected from naphthalene rings and unsaturated carbon-carbon double bonds.

[0066] In this embodiment, during the manufacturing process of the pixel definition layer 3, polyester material 31 is doped into the pixel definition layer 3. This allows the pixel definition layer 3 to consume oxygen, which helps reduce oxygen penetration, thereby reducing the water and oxygen content on the anode surface, and consequently reducing the surface voltage of the display panel and extending its service life. By doping the pixel definition layer 3 with polyester material 31 to consume oxygen, the process can be simplified.

[0067] Optionally, the doping concentration of the polyester material 31 is not less than 0.1% and not more than 5%.

[0068] Optionally, in step S3 above, forming a polymer film 4 on the surface of the pixel definition layer 3 away from the anode layer 2 and under the first design conditions includes:

[0069] The entire substrate 1 is baked, causing the polyester material 31 in the pixel definition layer 3 to react with oxygen in the environment, forming a polymer film 4 on the surface of the pixel definition layer 3 away from the anode layer 2; the oxygen in the environment includes oxygen generated by at least one film layer in the substrate 1 and the pixel definition layer 3 during baking.

[0070] In this embodiment, Figure 6 This is a schematic cross-sectional view of the substrate 1 after the entire substrate 1 is baked, and the polyester material 31 in the pixel definition layer 3 reacts with oxygen to form a polymer film 4 on the surface of the pixel definition layer 3 away from the anode layer 2. During the baking process, the polyester material 31 can undergo an oxidation reaction with oxygen to consume it, which helps reduce the water and oxygen molecule content on the anode surface, thereby reducing the surface voltage of the display panel, reducing the degree of display panel degradation, and significantly extending the lifespan of the display panel.

[0071] Optionally, the entire substrate 1 is baked, causing the polyester material 31 to react with oxygen in the environment to form a polymer film 4, including:

[0072] The entire substrate 1 is baked, causing the naphthalene ring of the polyester material 31 to react with oxygen to generate a first polymer; and / or, the entire substrate 1 is baked, causing the unsaturated carbon-carbon double bonds of the polyester material 31 to react with oxygen to generate a second polymer; and / or, the entire substrate 1 is baked, causing both the naphthalene ring and the unsaturated carbon-carbon double bonds of the polyester material 31 to react with oxygen to generate a third polymer; wherein, the polymer film 4 includes at least one polymer selected from the first polymer, the second polymer, and the third polymer.

[0073] In this embodiment, during the baking process of the entire substrate 1, the polyester material 31 consumes oxygen, which can remove water molecules and oxygen molecules on the surface of the anode layer 2 to a large extent, thereby reducing the surface voltage of the display panel and reducing the initial decrease in the lifespan of the display panel, which is beneficial to improving the lifespan of the display panel.

[0074] It is understood that the polymer membrane 4 may include at least one of the first polymer, the second polymer, and the third polymer; the polymer membrane 4 may also include unconsumed polyester material 31.

[0075] Optionally, the first general formula of polyester material 31 is:

[0076]

[0077] The second general formula for the first polymer is:

[0078]

[0079] The third general formula for the second polymer is:

[0080]

[0081] The fourth general formula for the third polymer is:

[0082]

[0083] In the first, second, third, and fourth general formulas above, m is a positive integer.

[0084] Optionally, polyester material 31 also includes hydroxyl groups.

[0085] In step S3 above, forming a polymer film 4 on the surface of the pixel definition layer 3 away from the anode layer 2 under the first design conditions includes:

[0086] The hydroxyl groups of polyester material 31 react with pixel definition layer 3 under ultraviolet light radiation and / or thermal radiation to generate a fourth polymer and a fifth polymer, and the first polymer film 4 includes the fourth polymer and the fifth polymer.

[0087] It should be noted that pixel definition layer 3 is prone to degradation under ultraviolet light radiation, and the degradation process is as follows:

[0088]

[0089] In the above reaction formula, the α-diazocarbonyl structure of the pixel definition layer 3 is easily stripped of 1 molecule of N2 under ultraviolet radiation (UV-hv) or thermal radiation (Δ) to form the first intermediate.

[0090] The first intermediate undergoes intramolecular rearrangement under ultraviolet (UV-hv) or thermal (Δ) radiation to form the second intermediate. The second intermediate is then decomposed into small molecules such as carbon dioxide (CO2), sulfur dioxide (SO2), and H2O under UV-hv or thermal (Δ) radiation. The generation of acidic gases such as CO2 and SO2 exacerbates damage to the organic light-emitting layer 5, anode, and cathode of the display panel, reducing its lifespan.

[0091] In this embodiment, the hydroxyl groups of polyester material 31 can undergo a substitution reaction with the first intermediate under ultraviolet or thermal radiation to generate the first and fifth polymers in the fourth polymer, thus preventing further degradation of the first intermediate. The specific reaction formula is as follows:

[0092]

[0093] The chemical formula of R2 in the fourth polymer is:

[0094]

[0095] Furthermore, the hydroxyl groups of polyester material 31 can undergo a condensation reaction with the second intermediate under ultraviolet or thermal radiation to generate a fifth polymer. This avoids the decomposition of the second intermediate to generate acidic gases CO2 and SO2, which helps reduce damage to the organic light-emitting layer 5, anode, and cathode of the display panel, and thus improves the lifespan of the display panel. The specific reaction formula is as follows:

[0096]

[0097] The chemical formula of R2 in the fifth polymer is:

[0098]

[0099] As can be seen from the above, the hydroxyl groups of the polyester material 31 of this application can form a polymer film 4 on the surface of the pixel definition layer 3 away from the anode under ultraviolet radiation or thermal radiation. The polymer film 4 includes a fourth polymer and a fifth polymer. The polymer film 4 formed on the surface of the pixel definition layer 3 has high thermal stability and resistance to ultraviolet radiation. This polymer film 4 encapsulates the pixel definition layer, preventing the pixel definition layer 3 from degrading and generating acidic gases under ultraviolet radiation or thermal radiation, which helps to extend the service life of the display panel.

[0100] Based on the same inventive concept, this application provides a display panel, including a display panel obtained based on the manufacturing method provided in the above embodiments.

[0101] In this embodiment, the display panel is obtained by the manufacturing method provided in the above embodiments. Specifically, the display panel includes a substrate 1, a plurality of anode layers 2, a pixel definition layer 3, and a polymer film 4.

[0102] Multiple anode layers 2 are arranged in an array on one side of the substrate 1.

[0103] The pixel definition layer 3 covers the peripheral areas of the substrate 1 and each anode layer 2, and the pixel openings in the pixel definition layer 3 expose the central area of ​​the anode layer 2.

[0104] The polymer film 4 is disposed on the surface of the pixel definition layer 3 away from the anode layer 2. The polymer film 4 is formed under first design conditions, which include oxygen.

[0105] In this embodiment, the formation of the polymer film 4 requires the consumption of oxygen, which helps to reduce oxygen infiltration, thereby reducing the oxygen concentration on the anode surface, and consequently reducing the surface voltage of the display panel and extending its service life. This application consumes oxygen on the surface of the anode layer 2 during the formation of the polymer film 4, which helps to ensure the atmosphere on the surface of the anode layer 2 and guarantees the work function of the anode.

[0106] Optionally, the display panel also includes an organic light-emitting layer 5 and a cathode disposed sequentially on the side of the polymer film 4 away from the substrate 1.

[0107] Based on the same inventive concept, this application provides an electronic device including the display panel described in the above embodiments.

[0108] In this embodiment, since the electronic device uses any of the display panels provided in the foregoing embodiments, the principle and technical effects are described in the foregoing embodiments and will not be repeated here.

[0109] Optionally, the electronic device includes a smartphone, computer, tablet, artificial intelligence device, wearable device, power bank, or vehicle-mounted device.

[0110] It should be noted that the electronic devices are not limited to the above-mentioned types. Those skilled in the art can set any of the display panels provided in the above embodiments of this application in different devices according to actual application needs, thereby obtaining the electronic devices provided in the embodiments of this application.

[0111] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0112] 1. In the process of forming the polymer film in the embodiments of this application, oxygen is consumed, which helps to reduce oxygen penetration, thereby reducing the oxygen concentration on the anode surface, thereby reducing the surface voltage of the display panel and improving the service life of the display panel.

[0113] 2. The polyester material in this application contains naphthalene ring functional groups, which can absorb ultraviolet light smaller than 380 nanometers. The naphthalene ring functional groups themselves have strong ultraviolet absorption capabilities, which can help reduce the degradation of the pixel definition layer under ultraviolet radiation, thereby reducing the generation of acidic gases such as sulfur dioxide (SO2) and carbon dioxide (CO2), thus helping to protect the organic light-emitting layer, cathode and anode, and improving the service life of the display panel under ultraviolet radiation.

[0114] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0115] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0116] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0117] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0118] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0119] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially according to the arrows, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of this application, the steps in each process can be executed in other orders as required. Moreover, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of these sub-steps or stages may be executed at the same time or at different times. In scenarios where the execution times are different, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and this application does not limit this.

[0120] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A method for manufacturing a display panel, characterized in that, include: An array of anode layers is sequentially fabricated on one side of the substrate; A pixel definition layer is manufactured that covers the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer; A polymer film is formed on the surface of the pixel definition layer away from the anode layer under first design conditions; the first design conditions include oxygen. Fabricating a pixel definition layer covering the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer, includes: A pixel definition layer is manufactured covering the peripheral regions of the substrate and each of the anode layers, and a polyester material is coated on the surface of the pixel definition layer away from the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer; the polyester material includes at least one functional group selected from naphthalene rings and unsaturated carbon-carbon double bonds. A polymer film is formed on the surface of the pixel definition layer away from the anode layer, under a first design condition, comprising: The entire substrate is baked, causing the polyester material to react with oxygen in the environment to form the polymer film; the oxygen in the environment includes oxygen generated by at least one film layer, including the substrate and the pixel definition layer, during the baking process. Baking the entire substrate to allow the polyester material to react with oxygen in the environment to form the polymer film includes: The entire substrate is baked so that the naphthalene ring of the polyester material reacts with the oxygen to form a first polymer, and / or the unsaturated carbon-carbon double bonds of the polyester material react with the oxygen to form a second polymer, and / or both the naphthalene ring and the unsaturated carbon-carbon double bonds of the polyester material react with the oxygen to form a third polymer. The polymer film includes at least one polymer selected from the first polymer, the second polymer, and the third polymer.

2. The manufacturing method according to claim 1, characterized in that, The first general formula for the polyester material is: ； The second general formula of the first polymer is: ； The third general formula of the second polymer is: ； The fourth general formula of the third polymer is: ； Wherein, m in the first general formula, the second general formula, the third general formula, and the fourth general formula is a positive integer.

3. The manufacturing method according to claim 1, characterized in that, After the pixel definition layer is formed on the surface away from the anode layer and under the first design conditions, the process further includes: An organic light-emitting layer and a cathode layer are sequentially fabricated on the side of the polyester material away from the pixel definition layer.

4. The manufacturing method according to claim 3, characterized in that, The polyester material also includes hydroxyl groups; And, forming a polymer film on the surface of the pixel definition layer away from the anode layer, and under first design conditions, including: The hydroxyl groups of the polyester material react with the pixel definition layer under ultraviolet light radiation and / or thermal radiation to generate a fourth polymer and a fifth polymer, and the polymer film includes the fourth polymer and the fifth polymer.

5. The manufacturing method according to claim 1, characterized in that, Fabricating a pixel definition layer covering the peripheral regions of the substrate and each of the anode layers, such that the pixel openings of the pixel definition layer expose the central region of the anode layer, includes: A pixel definition layer is fabricated covering the peripheral regions of the substrate and each of the anode layers and doped with polyester material, such that the pixel openings of the pixel definition layer expose the central region of the anode layer; the polyester material includes at least one functional group selected from naphthalene rings and unsaturated carbon-carbon double bonds; And, forming a polymer film on the surface of the pixel definition layer away from the anode layer under the first design conditions, including: The entire substrate is baked, causing the polyester material in the pixel definition layer to react with oxygen in the environment, forming the polymer film on the surface of the pixel definition layer away from the anode layer; the oxygen in the environment includes oxygen generated by the substrate and at least one film layer in the pixel definition layer during the baking process.

6. A display panel, characterized in that, This includes display panels obtained based on the manufacturing method described in any one of claims 1 to 5.

7. An electronic device, characterized in that, Includes the display panel as described in claim 6.

Images