Display panel, display device and preparation method of display panel

Abstract

The application provides a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure, a first electrode layer, a light-emitting functional layer and a first protection part. The isolation structure is arranged on one side of the substrate and encloses an isolation opening. The first electrode layer is arranged on one side of the substrate and comprises a first electrode arranged corresponding to the isolation opening. The light-emitting functional layer is arranged on the side, away from the substrate, of the first electrode layer and comprises a light-emitting structure arranged corresponding to the isolation opening. The first protection part is located on the side, away from the substrate, of the first electrode layer and is located in the isolation opening. At least part of the first protection part is arranged in close contact with the isolation opening. In the application, at least part of the isolation structure can be spaced apart from the external environment during the preparation of the display panel, thereby playing a protective role on the isolation structure and reducing the risk of oxidation of the isolation structure.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] Organic light-emitting diode (OLED) display panels and display panels using light-emitting diode (LED) devices are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices. Summary of the Invention

[0003] This application provides a display panel, a display device, and a method for manufacturing the display panel, which can improve reliability.

[0004] In a first aspect, embodiments of this application provide a display panel, which includes a substrate, an isolation structure, a first electrode layer, a light-emitting functional layer, and a first protective portion. The isolation structure is disposed on one side of the substrate, forming an isolation opening. The first electrode layer is disposed on one side of the substrate and includes a first electrode corresponding to the isolation opening. The light-emitting functional layer is disposed on the side of the first electrode layer away from the substrate and includes a light-emitting structure corresponding to the isolation opening. The first protective portion is located on the side of the first electrode layer away from the substrate and within the isolation opening, with at least a portion of the first protective portion adhering to the isolation opening.

[0005] In some embodiments, the isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthographic projection of the first isolation portion onto the substrate is located within the orthographic projection of the second isolation portion onto the substrate, and the first protective portion is at least partially attached to the first isolation portion.

[0006] In some embodiments, the cross-sectional size of the first isolation portion gradually increases along the direction away from the substrate.

[0007] In some embodiments, the cross-sectional size of the first isolation portion gradually decreases along the direction away from the substrate.

[0008] In some embodiments, the display panel further includes a second electrode layer disposed on the side of the light-emitting functional layer away from the substrate, the second electrode layer including a second electrode disposed corresponding to the isolation opening.

[0009] In some embodiments, the first isolation portion includes a conductive material, and the second electrode is electrically connected to the first isolation portion.

[0010] In some embodiments, the first protective portion includes a first part that is fitted to the first insulating portion, and the first part is sandwiched between the first insulating portion and the second electrode in a direction parallel to the plane of the substrate. The first part includes a conductive material, and the second electrode abuts against the first part.

[0011] In some embodiments, the first protective portion further includes a second portion disposed on the side of the light-emitting structure facing the substrate and connected to the first portion.

[0012] In some embodiments, the display panel further includes a pixel definition layer disposed on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The second portion is located on the side of the pixel defining portion away from the substrate and is disposed in close contact with the pixel defining portion.

[0013] In some embodiments, the display panel further includes a third protective portion disposed on the side of the second isolation portion away from the substrate, the third protective portion being made of the same material as the first protective portion.

[0014] In some embodiments, the display panel further includes a second protective portion disposed between the light-emitting functional layer and the first electrode, at least a portion of the second protective portion being attached to the first electrode, and the second protective portion being spaced apart from the first protective portion.

[0015] In some embodiments, the first protective part and the second protective part comprise the same material.

[0016] In some embodiments, the first protective part and the second protective part are disposed on the same layer.

[0017] In some embodiments, the display panel further includes a pixel definition layer disposed on the side of the first electrode layer facing away from the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel defining portion covers a portion of the structure of the first electrode, and a portion of the first electrode is exposed relative to the pixel opening.

[0018] In some embodiments, the second protective portion includes a third portion located within the pixel opening and a fourth portion located on the side of the pixel defining portion away from the substrate, wherein the orthographic projection of the light-emitting structure on the substrate and the orthographic projection of the fourth portion on the substrate overlap.

[0019] In some embodiments, the first electrode includes a body portion and a fourth protective portion located on at least one side of the body portion along the thickness direction.

[0020] In some embodiments, the orthographic projection of the fourth protective portion onto the substrate covers the orthographic projection of the body portion onto the substrate.

[0021] In some embodiments, the orthographic projection of the fourth protective portion onto the substrate covers the orthographic projection of the second protective portion onto the substrate.

[0022] Secondly, embodiments of this application also provide a display panel, which includes a substrate, an isolation structure, a first electrode layer, a second protective portion, and a light-emitting functional layer. The isolation structure is disposed on one side of the substrate, and the isolation structure encloses an isolation opening. The first electrode layer is disposed on one side of the substrate, and the first electrode layer includes a first electrode disposed corresponding to the isolation opening. The second protective portion is located on the side of the first electrode layer away from the substrate, and at least a portion of the second protective portion is attached to the first electrode. The light-emitting functional layer is disposed on the side of the second protective portion away from the substrate, and the light-emitting functional layer includes a light-emitting structure disposed corresponding to the isolation opening.

[0023] In some embodiments, the display panel further includes a pixel definition layer disposed on the side of the first electrode layer facing away from the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel defining portion covers a portion of the structure of the first electrode, and a portion of the structure of the first electrode is exposed relative to the pixel opening.

[0024] In some embodiments, the second protective portion includes a third portion located within the pixel opening and a fourth portion located on the side of the pixel defining portion away from the substrate, wherein the orthographic projection of the light-emitting structure on the substrate and the orthographic projection of the fourth portion on the substrate overlap.

[0025] In some embodiments, the display panel further includes a fifth protective portion located on the side of the isolation structure facing the substrate and bonded to the isolation structure. The fifth protective portion is disposed in the same layer as the second protective portion and comprises the same material.

[0026] Thirdly, embodiments of this application provide a display device, including the display panel in any of the foregoing embodiments.

[0027] Fourthly, embodiments of this application provide a method for manufacturing a display panel, comprising:

[0028] A first electrode layer is formed on one side of the substrate, the first electrode layer including a plurality of first electrodes spaced apart;

[0029] An isolation structure is formed on one side of the substrate, and the isolation structure encloses an isolation opening. The orthographic projection of the first electrode on the substrate is at least partially located within the orthographic projection of the isolation opening on the substrate.

[0030] A protective layer is formed on the side of the first electrode layer away from the substrate, and the protective layer includes a first protective portion that is at least partially attached to the isolation structure.

[0031] In some embodiments, the formation of a protective layer on the side of the first electrode layer away from the substrate includes:

[0032] A protective material layer is formed on the side of the first electrode layer away from the substrate. The protective material layer includes a protective material portion disposed corresponding to the isolation opening. The protective material portion covers the first electrode and extends to the isolation structure.

[0033] The protective material is patterned to form a first protective part and a second protective part spaced apart. At least a portion of the first protective part is attached to the isolation structure, and at least a portion of the second protective part is attached to the first electrode.

[0034] In some embodiments, an isolation structure is formed on one side of the substrate, including:

[0035] An isolation material layer is formed on one side of the substrate, and the isolation material layer covers the first electrode.

[0036] The insulating material layer is patterned to form an insulating structure, and at least part of the oxide structure on the first electrode is removed.

[0037] In some embodiments, before forming the isolation structure on one side of the substrate, the method further includes:

[0038] A pixel definition material layer is formed on one side of the substrate, and the pixel definition material layer covers the first electrode.

[0039] After forming the isolation structure on one side of the substrate, it also includes:

[0040] The pixel definition material layer is patterned to form the pixel definition layer.

[0041] This application provides a display panel, a display device, and a method for manufacturing the display panel, additionally comprising a first protective portion formed after a first electrode layer and an isolation structure. The first protective portion is located on one side of the first electrode layer, and at least a portion thereof can be attached to the outer surface of the isolation structure. Therefore, the first protective portion can isolate at least a portion of the isolation structure from the external environment during the display panel manufacturing process, thereby protecting the isolation structure, reducing the risk of oxidation of the isolation structure, and ultimately ensuring the reliability of the isolation structure in the final formed display panel, thus guaranteeing the performance of the final formed display panel. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a cross-sectional structural diagram of a display panel provided in an embodiment of this application;

[0044] Figure 2 yes Figure 1 Enlarged structural diagram of region Q in the middle region;

[0045] Figure 3 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0046] Figure 4 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0047] Figure 5 This is a schematic diagram illustrating the manufacturing process of a display panel according to an embodiment of this application;

[0048] Figure 6 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0049] Figure 7 yes Figure 6 A magnified structural diagram of region P in the middle area;

[0050] Figure 8 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0051] Figure 9 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0052] Figure 10 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0053] Figure 11 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0054] Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0055] Figure 13 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0056] Figures 14a to 14c This is a schematic diagram of the process structure of a method for manufacturing a display panel according to an embodiment of this application;

[0057] Figure 15 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0058] Figures 16a to 16b This is a schematic diagram of the process structure of a method for manufacturing a display panel according to an embodiment of this application;

[0059] Figure 17 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0060] Figure 18 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0061] Figure 19 This is a schematic diagram of the process structure of a method for manufacturing a display panel provided in an embodiment of this application.

[0062] Marker explanation:

[0063] 10. Substrate;

[0064] 20. Isolation structure; 21. Isolation opening; 22. First isolation section; 23. Second isolation section;

[0065] 30. Light-emitting functional layer; 31. Light-emitting structure;

[0066] 40. First electrode layer; 41. First electrode; 411. Main body; 412. Fourth protective part;

[0067] 50. Protective layer; 51. First protective section; 511. First part; 512. Second part; 52. Second protective section; 521. Third part; 522. Fourth part; 53. Third protective section; 54. Fifth protective section;

[0068] 60. Second electrode layer; 61. Second electrode;

[0069] 70. Pixel definition layer; 71. Pixel limiting section; 72. Pixel opening;

[0070] 80. Planarization layer;

[0071] 90. Encapsulation layer;

[0072] B. Sacrifice Department;

[0073] 50', Protective material layer; 51', Protective material section; 70', Pixel definition material layer;

[0074] X, thickness direction. Detailed Implementation

[0075] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0077] Organic light-emitting display panels typically use organic light-emitting devices (OLEDs) as the light-emitting structure to achieve the display effect. Furthermore, two electrodes, a cathode and an anode, are usually located on both sides of the light-emitting structure. These two electrodes drive the light-emitting structure to enable it to emit light.

[0078] In related technologies, display panels can incorporate isolation structures, which allow for spacing between different light-emitting structures. However, during the fabrication process, at least a portion of the isolation structure is exposed to the environment and undergoes oxidation, altering its inherent properties and affecting the performance of the final display panel.

[0079] In view of this, firstly, please refer to Figure 1 and Figure 2This application provides a display panel, which includes a substrate 10, an isolation structure 20, a first electrode layer 40, a light-emitting functional layer 30, and a first protective portion 51. The isolation structure 20 is disposed on one side of the substrate 10, forming an isolation opening 21. The first electrode layer 40 is disposed on one side of the substrate 10 and includes a first electrode 41 corresponding to the isolation opening 21. The light-emitting functional layer 30 is disposed on the side of the first electrode layer 40 away from the substrate 10 and includes a light-emitting structure 31 corresponding to the isolation opening 21. The first protective portion 51 is located on the side of the first electrode layer 40 away from the substrate 10 and is located within the isolation opening 21. At least a portion of the first protective portion 51 is fitted with the isolation opening 21. In other words, at least a portion of the structure of the first protective portion 51 is fitted with the isolation opening 21. It should be noted that the term "fitted" in this application can be understood as "close contact or direct contact of surfaces".

[0080] The substrate 10 primarily serves a supporting and load-bearing function. Other film layers are sequentially stacked on the substrate 10. This stacking refers to the sequential arrangement of the other film layers along the thickness direction X of the substrate 10. The substrate 10 may include multiple film layer structures. The specific composition of the film layer structures is not limited in this embodiment. Furthermore, the thickness direction X of other film layers located on one side of the substrate 10 is generally consistent with the thickness direction X of the substrate 10 itself. Therefore, for ease of description, the thickness direction X of the substrate 10 or other film layers mentioned later in this embodiment will be shown in the same direction.

[0081] The first electrode layer 40, the light-emitting functional layer 30, and the isolation structure 20 are all located on the same side of the substrate 10. The first electrode layer 40 includes a first electrode 41 disposed corresponding to the isolation opening 21. The phrase "the first electrode 41 is disposed corresponding to the isolation opening 21" means that the orthographic projection of the first electrode 41 onto the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 onto the substrate 10. The first electrode 41 may be at least partially disposed within the isolation opening 21, or it may be at least partially located on the side of the isolation opening 21 facing the substrate 10. This embodiment of the application does not limit this.

[0082] Similarly, the light-emitting functional layer 30 includes a light-emitting structure 31 corresponding to the isolation opening 21. Here, "the light-emitting structure 31 corresponding to the isolation opening 21" means that the orthographic projection of the light-emitting structure 31 onto the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 onto the substrate 10. The light-emitting structure 31 may be at least partially located within the isolation opening 21, or it may be at least partially located on the side of the isolation opening 21 facing the substrate 10; this embodiment does not impose any limitations on this.

[0083] The light-emitting structure 31 includes, but is not limited to, a red light-emitting structure 31 for emitting red light, a green light-emitting structure 31 for emitting green light, and a blue light-emitting structure 31 for emitting blue light. Each light-emitting structure 31 may include a stacked hole injection layer (HIL), a hole transport layer (HTL), a light-emitting layer, an electron injection layer (EIL), and an electron transport layer (ETL).

[0084] The first electrode 41 is correspondingly disposed with respect to the light-emitting structure 31. Exemplarily, the orthographic projection of the first electrode 41 onto the substrate 10 at least partially overlaps with the orthographic projection of the light-emitting structure 31 onto the substrate 10. The first electrode 41 is used to drive and control whether the light-emitting structure 31 emits light. Further optionally, the display panel may also include a second electrode layer 60 located on the side of the light-emitting functional layer 30 facing away from the substrate 10. The second electrode layer 60 includes a second electrode 61, and the first electrode 41 and the second electrode 61 are used together to drive whether the light-emitting structure 31 emits light.

[0085] The light-emitting functional layer 30 is typically formed after the isolation structure 20 is molded. The isolation structure 20 allows the light-emitting functional layer 30 to form multiple spaced light-emitting structures 31. Specifically, taking the red light-emitting structure 31 before the green light-emitting structure 31 is prepared as an example, the red light-emitting material corresponding to the red light-emitting structure 31 first falls into each isolation opening 21, and then a portion of the red light-emitting material in the isolation opening 21 is selectively etched away, while a portion of the red light-emitting material in the isolation opening 21 is retained to form the red light-emitting structure 31. After this, the green light-emitting material corresponding to the green light-emitting structure 31 falls into each isolation opening 21, and then a portion of the green light-emitting material in the isolation opening 21 is selectively etched away, while a portion of the green light-emitting material in the isolation opening 21 is retained to form the green light-emitting structure 31. The above operation is then repeated to prepare light-emitting structures 31 of other colors, thereby forming light-emitting structures 31 of different colors in at least some different isolation openings 21, satisfying the preparation of the light-emitting functional layer 30.

[0086] Furthermore, in the display panel manufacturing process, a first electrode layer 40 is typically formed first, followed by an isolation structure 20, then a light-emitting functional layer 30 and a second electrode layer 60 are formed sequentially, and finally an encapsulation structure is formed to encapsulate and protect the light-emitting structure 31 and the isolation structure 20. During this process, for a period of time after the isolation structure 20 is fabricated, at least a portion of its surface will come into contact with the environment, potentially leading to oxidation and affecting the performance of the isolation structure 20 itself.

[0087] To address this, this embodiment of the application additionally provides a first protective portion 51, which is formed after the first electrode layer 40 and the isolation structure 20. The first protective portion 51 is located on one side of the first electrode layer 40, and at least a portion of the first protective portion 51 can be attached to the outer surface of the isolation structure 20. Therefore, the first protective portion 51 can isolate at least a portion of the isolation structure 20 from the external environment during the display panel manufacturing process, thereby protecting the isolation structure 20, reducing the risk of oxidation of the isolation structure 20, and thus ensuring the reliability of the isolation structure 20 in the final formed display panel and ensuring the performance of the final formed display panel.

[0088] It should be noted that the embodiments of this application do not limit the relative positional relationship between the first protective portion 51 and the light-emitting functional layer 30, nor the order in which they are prepared. The first protective portion 51 may be formed before or after the light-emitting functional layer 30. Furthermore, the embodiments of this application do not limit the material composition of the first protective portion 51. The first protective portion 51 may include a conductive material, or it may include an insulating material.

[0089] In some embodiments, such as Figure 1 and Figure 2 As shown, the isolation structure 20 includes a first isolation portion 22 and a second isolation portion 23 stacked sequentially along the direction away from the substrate 10. The orthographic projection of the first isolation portion 22 onto the substrate 10 is located within the orthographic projection of the second isolation portion 23 onto the substrate 10. The first protective portion 51 is at least partially attached to the first isolation portion 22.

[0090] The isolation structure 20 includes at least two parts: a first isolation portion 22 and a second isolation portion 23. The orthographic projection of the first isolation portion 22 onto the substrate 10 lies within the orthographic projection of the second isolation portion 23 onto the substrate 10. For example, the longitudinal section of the isolation structure 20 can be T-shaped. This design helps to prevent the luminescent material from extending along the sidewall of the first isolation portion 22 to the sidewall of the second isolation portion 23 during the fabrication of the light-emitting functional layer 30, thus enabling the fabrication and separation of the light-emitting structures 31 corresponding to different isolation openings 21. Furthermore, depending on the actual needs, the orthographic projection of the isolation structure 20 onto the substrate 10 can be a grid or a strip, etc.

[0091] The embodiments of this application do not limit the material composition of the first isolation part 22 and the second isolation part 23. The first isolation part 22 and the second isolation part 23 may both include conductive materials, or the first isolation part 22 may include conductive materials and the second isolation part 23 may include insulating materials, or both may include insulating materials at the same time.

[0092] Furthermore, the specific shape and dimensions of the first isolation portion 22 and the second isolation portion 23 are not limited in the embodiments of this application. Optionally, as... Figure 1 As shown, in the direction away from the substrate 10, the cross-sectional size of the first isolation portion 22 gradually decreases, that is, the longitudinal section of the first isolation portion 22 can be trapezoidal. Or as... Figure 3 As shown, in the direction away from the substrate 10, the cross-sectional size of the first isolation portion 22 gradually increases, that is, the longitudinal section of the first isolation portion 22 can also be an inverted trapezoidal structure, as long as the orthogonal projection of the first isolation portion 22 on the substrate 10 is located within the orthogonal projection of the second isolation portion 23 on the substrate 10.

[0093] Furthermore, the first protective part 51 is at least partially attached to the first isolation part 22. The first protective part 51 can isolate at least a portion of the structure in the first isolation part 22 from the external environment during the manufacturing process of the display panel, thereby reducing the risk of oxidation of the first isolation part 22 and improving the reliability of the first isolation part 22.

[0094] In some embodiments, the display panel further includes a second electrode layer 60 disposed on the side of the light-emitting functional layer 30 away from the substrate 10. The second electrode layer 60 includes a second electrode 61, which is disposed corresponding to the isolation opening 21. It should be noted that "the second electrode 61 is disposed corresponding to the isolation opening 21" means that the orthogonal projection of the second electrode 61 on the substrate 10 is at least partially located within the orthogonal projection of the isolation opening 21 on the substrate 10.

[0095] In related technologies, the second electrode 61 is typically a planar electrode, whose orthogonal projection onto the substrate 10 can simultaneously cover all light-emitting structures 31. However, in this embodiment, the presence of the isolation structure 20 can separate at least some of the different second electrodes 61 corresponding to different light-emitting structures 31 during the display panel manufacturing process, so that the second electrode layer 60 includes multiple second electrodes 61, and the second electrodes 61 are disposed corresponding to the isolation opening 21.

[0096] It should be noted that the phrase "the second electrode 61 is disposed corresponding to the isolation opening 21" mentioned in the embodiments of this application refers to the following: the orthographic projection of the second electrode 61 on the substrate 10 at least partially overlaps with the orthographic projection of the isolation opening 21 on the substrate 10. Specifically, the second electrode 61 may be completely located within the isolation opening 21, or it may be partially located within the isolation opening 21. Further, each second electrode 61 may be disposed corresponding to each light-emitting structure 31, meaning that the orthographic projection of a single second electrode 61 on the substrate 10 overlaps only with the orthographic projection of one light-emitting structure 31 on the substrate 10; or a single second electrode 61 may simultaneously be disposed corresponding to multiple light-emitting structures 31, meaning that the orthographic projection of a single second electrode 61 on the substrate 10 simultaneously overlaps with the orthographic projections of multiple light-emitting structures 31 on the substrate 10.

[0097] In this embodiment, the presence of the isolation structure 20 allows the second electrode layer 60 to include multiple second electrodes 61. The multiple second electrodes 61 can be used to drive and control different light-emitting structures 31, thereby achieving partitioned or independent control of different light-emitting structures 31, which has strong flexibility and practicality.

[0098] In some embodiments, such as Figure 1 and Figure 2 As shown, the first isolation part 22 includes a conductive material, and the second electrode 61 is electrically connected to the first isolation part 22.

[0099] The first isolation section 22 includes a conductive material. The second electrode 61 can be electrically connected to the first isolation section 22 to transmit corresponding signals and meet the need to control whether the light-emitting structure 31 emits light. At least a portion of the second electrode 61 can be in direct contact with the first isolation section 22 to achieve an electrical connection between them. Alternatively, the second electrode 61 can also be in contact with the first protection section 51, which may include a conductive material, thus also achieving an electrical connection between the second electrode 61 and the first isolation section 22.

[0100] Furthermore, since at least a portion of the structure in the first protective part 51 is attached to the first isolation part 22, the first protective part 51 helps to reduce the probability of oxidation of the first isolation part 22, thereby reducing the risk of increased resistance of the first isolation part 22 due to oxidation, which helps to improve the conductivity between the first isolation part 22 and the second electrode 61 and reduce the power consumption corresponding to the use of the display panel.

[0101] The specific material composition of the first isolation portion 22 is not limited in this embodiment. Optionally, the first isolation portion 22 may include at least one of titanium, aluminum, molybdenum, copper, and alloy materials. Furthermore, depending on the actual needs, the second isolation portion 23 may include a conductive material or an insulating material.

[0102] In some alternative embodiments, the first protective portion 51 includes a first portion 511 that is fitted to the first insulating portion 22. In a direction parallel to the plane of the substrate 10, the first portion 511 is sandwiched between the first insulating portion 22 and the second electrode 61. The first portion 511 includes a conductive material, and the second electrode 61 abuts against the first portion 511.

[0103] The first protective portion 51 includes at least a first part 511, which can be fitted to the sidewall of the first isolation portion 22. The first part 511 is sandwiched between the first isolation portion 22 and the second electrode 61. After the isolation structure 20 is formed, the first part 511 is formed first and then the second electrode 61 is formed. This reduces the risk of oxidation of the first isolation portion 22 during the fabrication of the second electrode 61 and improves the reliability of the first isolation portion 22.

[0104] Furthermore, the first part 511 includes a conductive material, and the second electrode 61 is disposed in contact with the first part 511. This design, by means of the first part 511, allows the power signal to be transmitted between the second electrode 61 and the first isolation part 22, thereby meeting the signal transmission requirements and enabling control over whether the light-emitting structure 31 emits light.

[0105] In some embodiments, such as Figure 2 As shown, the first protective part 51 also includes a second part 512 disposed on the side of the light-emitting structure 31 facing the substrate 10 and connected to the first part 511.

[0106] The first protective portion 51 includes a first part 511 and a second part 512, which are formed together in the same process. The second part 512 is located on the side of the light-emitting structure 31 facing the substrate 10, that is, the first protective portion 51 is formed before the light-emitting functional layer 30. This reduces the risk of oxidation of the first isolation portion 22 during the fabrication of the light-emitting functional layer 30 and improves the reliability of the first isolation portion 22.

[0107] Alternatively, the second portion 512 includes a conductive material, and the second electrode 61 is located on the side of the second portion 512 away from the substrate 10 and is attached to the second portion 512.

[0108] From a manufacturing perspective, compared to the second electrode 61 being abutted against the first portion 511, the second electrode 61 is easier to attach to the second portion 512. Therefore, in this embodiment, the second portion 512 can also serve to contact and electrically connect with the second electrode 61, which helps to improve the reliability of signal transmission among the first protection part 51, the first isolation part 22, and the second electrode 61.

[0109] In some embodiments, the display panel further includes a pixel definition layer 70 disposed on one side of the substrate 10. The pixel definition layer 70 includes a pixel defining portion 71 and a pixel opening 72 formed by the pixel defining portion 71. The second portion 512 is located on the side of the pixel defining portion 71 facing away from the substrate 10 and is disposed in close contact with the pixel defining portion 71.

[0110] The pixel definition layer 70 includes a pixel defining portion 71 and a pixel opening 72 formed by the pixel defining portion 71. The pixel opening 72 defines the light-emitting structure 31, meaning that at least a portion of the light-emitting structure 31 is located within the pixel opening 72. The pixel definition layer 70 and the isolation structure 20 are located on the same side of the substrate 10. The relative positional relationship between the pixel definition layer 70 and the isolation structure 20 is not limited in this embodiment. Exemplarily, at least a portion of the isolation structure 20 may be disposed on the same layer as the pixel defining portion 71; or the isolation structure 20 may be located on the side of the pixel defining portion 71 facing away from the substrate 10. Figure 1 This is a schematic diagram showing the structure of the isolation structure 20 located on the side of the pixel limiting portion 71 away from the substrate 10.

[0111] In this embodiment, the second portion 512 is located on the side of the pixel defining portion 71 facing away from the substrate 10 and is attached to the pixel defining portion 71. That is, the first protective portion 51 is formed after the pixel defining layer 70, and the second portion 512 in the first protective portion 51 can cover and protect the pixel defining portion 71. This design can reduce the damage to the pixel defining portion 71 caused by the etching process corresponding to the light-emitting functional layer 30 during the subsequent fabrication of the light-emitting functional layer 30, thereby improving the structural integrity and reliability of the pixel defining portion 71. This, in turn, helps to improve the extension reliability of the second electrode 61 on the side of the pixel defining portion 71 facing away from the substrate 10, thereby indirectly improving the electrical connection reliability between the second electrode 61 and the first isolation portion 22.

[0112] In some embodiments, please refer to Figure 4 The display panel also includes a third protective portion 53 disposed on the side of the second isolation portion 23 away from the substrate 10, and the third protective portion 53 and the first protective portion 51 are made of the same material.

[0113] In this embodiment, the first protective portion 51 and the third protective portion 53 can be formed together in the same process. Specifically, during the fabrication process, some material falls onto the side of the second isolation portion 23 away from the substrate 10 to form the third protective portion 53, and some material falls into the isolation opening 21 to form the first protective portion 51. The first protective portion 51 can be attached to the first isolation portion 22 to protect it. Similarly, the third protective portion 53 can be attached to the second isolation portion 23 to protect it.

[0114] Specifically, the display panel may also include an encapsulation layer 90, which is located on the side of the second electrode layer 60 away from the substrate 10. During the manufacturing process, the materials used to form the light-emitting structure 31, the materials used to form the second electrode 61, and the materials used to form the encapsulation layer 90 are sequentially formed at corresponding positions of the isolation opening 21. Then, a sacrificial portion B is provided at a specific isolation opening 21 position. The sacrificial portion B can protect the light-emitting structure 31, the second electrode 61, and the encapsulation layer 90 located at the isolation opening 21 position from being etched away. In subsequent processes, the sacrificial portion B will be removed.

[0115] However, as Figure 5 As shown, the sacrificial portion B typically does not cover the second isolation portion 23, therefore the sacrificial portion B cannot effectively protect the isolation structure 20. Based on this, in this embodiment, the third protective portion 53 is located on the side of the second isolation portion 23 facing away from the substrate 10. The third protective portion 53 can protect the second isolation portion 23, reduce the etching impact of subsequent etching processes on the second isolation portion 23, and improve the overall structural reliability of the isolation structure 20.

[0116] In some embodiments, please refer to Figure 6 and Figure 7 The display panel also includes a second protective portion 52 disposed between the light-emitting functional layer 30 and the first electrode 41. At least a portion of the second protective portion 52 is attached to the first electrode 41, and the second protective portion 52 is spaced apart from the first protective portion 51.

[0117] In the manufacturing process of a display panel, the fabrication of the first electrode layer 40 typically precedes the fabrication of the isolation structure 20. Specifically, the first electrode layer 40 can be formed using physical vapor deposition (PVD), followed by the formation of a specific film layer on top of the first electrode layer 40 using chemical vapor deposition (CVD) or physical vapor deposition. This film layer is then etched using wet or dry etching to form the isolation structure 20. During this process, the first electrode 41 is susceptible to the etching effect corresponding to the isolation structure 20, potentially leading to damage to the first electrode 41.

[0118] Furthermore, the display panel may also include a pixel definition layer 70. The preparation of the pixel definition layer 70 is located after the preparation of the first electrode layer 40, and the pixel definition layer 70 also needs to undergo an etching process. On this basis, the first electrode 41 is easily affected by the double etching of the pixel definition layer 70 and the isolation structure 20, which further increases the risk of damage to the first electrode 41.

[0119] Therefore, this embodiment adds a second protective part 52. The second protective part 52 is located on the side of the first electrode 41 away from the substrate 10 and is attached to the first electrode 41. The second protective part 52 can protect the first electrode 41, reduce the risk of damage to the first electrode 41 due to the etching process, and improve the reliability of the first electrode 41. At the same time, the second protective part 52 also helps to isolate the first electrode 41 from the environment, thereby reducing the risk of oxidation of the first electrode 41 and improving the luminous efficiency and lifespan of the display panel.

[0120] Furthermore, the second protection part 52 needs to meet the driving requirements of the first electrode 41 on the light-emitting structure 31, therefore the second protection part 52 is usually provided with a conductive material. The first protection part 51 needs to meet the electrical connection requirements between the second electrode 61 and the first isolation part 22, therefore the first protection part 51 may also include a conductive material. Based on this, in order to reduce the risk of signal crosstalk between the two, the embodiments of this application further arrange the first protection part 51 and the second protection part 52 at intervals so that they can be relatively insulated from each other.

[0121] In some embodiments, the first protective part 51 and the second protective part 52 comprise the same material.

[0122] As can be seen from the foregoing, the first protective part 51 needs to include a conductive material to meet the electrical connection requirements between the second electrode 61 and the first isolation part 22. The second protective part 52 needs to include a conductive material to meet the electrical driving requirements of the first electrode 41 on the light-emitting structure 31. Based on this, the embodiments of this application help reduce the manufacturing cost required for display panel fabrication by making the first protective part 51 and the second protective part 52 include the same material.

[0123] The relative positional relationship between the first protective part 51 and the second protective part 52 is not limited in the embodiments of this application. In some optional embodiments, the first protective part 51 and the second protective part 52 are arranged on the same layer.

[0124] In this embodiment, the first protective portion 51 and the second protective portion 52 are made of the same material and are disposed in the same layer. This allows the first protective portion 51 and the second protective portion 52 to be formed together in the same manufacturing process, thereby improving the manufacturing efficiency of the display panel.

[0125] It should be noted that since the first protective part 51 and the second protective part 52 need to be spaced apart, etching is required during the fabrication of the first protective part 51 and the second protective part 52. During this process, the display panel can selectively include at least one of the first protective part 51 and the second protective part 52, depending on actual usage requirements. That is, the display panel can retain only the first protective part 51, or only the second protective part 52, or both the first protective part 51 and the second protective part 52, as needed.

[0126] In some embodiments, the display panel further includes a pixel definition layer 70 disposed on the side of the first electrode layer 40 facing away from the substrate 10. The pixel definition layer 70 includes a pixel defining portion 71 and a pixel opening 72 formed by the pixel defining portion 71. The pixel defining portion 71 covers a portion of the structure of the first electrode 41, and a portion of the first electrode 41 is exposed relative to the pixel opening 72.

[0127] In this embodiment, since the pixel defining portion 71 can cover a portion of the structure of the first electrode 41, it can protect that portion of the structure, thereby reducing the risk of damage and oxidation to the portion of the first electrode 41 by subsequent etching processes and improving the reliability of the first electrode 41. The specific material composition of the pixel defining portion 71 is not limited in this embodiment; optionally, the pixel defining portion 71 may include insulating materials, such as silicon oxide and silicon nitride.

[0128] In some embodiments, such as Figure 6 and Figure 7 As shown, the second protection part 52 includes a third part 521 located inside the pixel opening 72 and a fourth part 522 located on the side of the pixel limiting part 71 away from the substrate 10. The projection of the light-emitting structure 31 onto the substrate 10 and the projection of the fourth part 522 onto the substrate 10 overlap.

[0129] In related technologies, the structure in the light-emitting structure 31 that can achieve the light-emitting effect usually needs to be in contact with the first electrode 41. In other words, the light-emitting part of the light-emitting structure 31 is usually located in the orthogonal projection of the pixel opening 72 into the orthogonal projection of the substrate 10.

[0130] In this embodiment, the second protective portion 52 and the first electrode 41 can be electrically connected, so they can transmit the same signal. Furthermore, in addition to the third portion 521 located within the pixel opening 72, the second protective portion 52 can also include a fourth portion 522 extending to the side of the pixel limiting portion 71 facing away from the substrate 10. The fourth portion 522 can be attached to the light-emitting structure 31, so it can also drive a portion of the light-emitting structure 31 to achieve a light-emitting effect, thereby increasing the light-emitting area corresponding to a single light-emitting structure 31, which helps to improve the maximum display brightness of the display panel and has strong practicality.

[0131] In some embodiments, please refer to Figure 8 or Figure 9 The first electrode 41 includes a body portion 411 and a fourth protective portion 412 located on at least one side of the body portion 411 along the thickness direction X.

[0132] The first electrode 41 includes multiple film layers stacked together. The first electrode 41 includes at least a body portion 411 and a fourth protective portion 412. The body portion 411 is the main part of the first electrode 41. The number of fourth protective portions 412 can be one or two. Specifically, the fourth protective portion 412 can be located only on the side of the body portion 411 near the substrate 10, or the fourth protective portion 412 can be located only on the side of the body portion 411 away from the substrate 10, or there can be two fourth protective portions 412, one located on the side of the body portion 411 near the substrate 10 and the other located on the side of the body portion 411 away from the substrate 10.

[0133] The fourth protective part 412 serves to protect the main body 411. Specifically, a planarization layer 80 is typically provided on the side of the first electrode 41 facing the substrate 10. During the manufacturing and use of the display panel, moisture or other substances may seep into the planarization layer 80, leading to a risk of oxidation of the first electrode 41, which is detrimental to the luminous efficiency of the display panel. Therefore, by providing the fourth protective part 412 on the side of the main body 411 facing the substrate 10, the risk of oxidation of the main body 411 can be reduced, the structural reliability of the first electrode 41 can be improved, and the corresponding luminous efficiency and lifespan of the display panel can be enhanced.

[0134] The placement of the fourth protective part 412 on the side of the main body 411 away from the substrate 10 helps to reduce the impact of subsequent etching processes on the main body 411 and reduces the probability of the main body 411 coming into contact with the environment. It also helps to improve the structural reliability of the first electrode 41 and improve the luminous efficiency and lifespan of the display panel.

[0135] The relative positional relationship between the fourth protective part 412 and the main body part 411 is not limited in the embodiments of this application. Optionally, the orthographic projection of the fourth protective part 412 onto the substrate 10 covers the orthographic projection of the main body part 411 onto the substrate 10. More optionally, the orthographic projection of the fourth protective part 412 onto the substrate 10 covers the orthographic projection of the second protective part 52 onto the substrate 10.

[0136] The composition of the second protection part 52 and the fourth protection part 412 is not limited in this embodiment. Optionally, in order to meet the electrical connection requirements of the first electrode 41 and the electrical driving requirements of the light-emitting structure 31, both the second protection part 52 and the fourth protection part 412 may include conductive materials. Further, the second protection part 52 and the fourth protection part 412 may include the same material. For example, both the second protection part 52 and the fourth protection part 412 may include indium tin oxide, and the first electrode 41 may include metallic silver.

[0137] Secondly, please refer to Figure 10 This application also provides a display panel, which includes a substrate 10, an isolation structure 20, a first electrode layer 40, a second protective portion 52, and a light-emitting functional layer 30. The isolation structure 20 is disposed on one side of the substrate 10, and the isolation structure 20 encloses an isolation opening 21. The first electrode layer 40 is disposed on one side of the substrate 10, and the first electrode layer 40 includes a first electrode 41 disposed corresponding to the isolation opening 21. The second protective portion 52 is located on the side of the first electrode layer 40 away from the substrate 10, and at least a portion of the second protective portion 52 is attached to the first electrode 41. The light-emitting functional layer 30 is disposed on the side of the second protective portion 52 away from the substrate 10, and the light-emitting functional layer 30 includes a light-emitting structure 31 disposed corresponding to the isolation opening 21.

[0138] This embodiment adds a second protective part 52, which is located on the side of the first electrode 41 facing away from the substrate 10 and is attached to the first electrode 41. The second protective part 52 can protect the first electrode 41, reducing the risk of damage to the first electrode 41 due to subsequent etching processes and improving the reliability of the first electrode 41. At the same time, the second protective part 52 also helps to isolate the first electrode 41 from the environment, thereby reducing the risk of oxidation of the first electrode 41 and improving the luminous efficiency and service life of the display panel.

[0139] It should be noted that the first protective part 51 in the aforementioned embodiments can be disposed in the same layer as the second protective part 52 in the embodiments of this application, and include the same material, so that the two can be formed together in the same process. Based on this, the display panel can selectively include at least one of the first protective part 51 and the second protective part 52 according to actual use needs. That is, the display panel can retain only the first protective part 51, or only the second protective part 52, or both the first protective part 51 and the second protective part 52, as needed.

[0140] In some embodiments, the display panel further includes a pixel definition layer 70 disposed on the side of the first electrode layer 40 facing away from the substrate 10. The pixel definition layer 70 includes a pixel defining portion 71 and a pixel opening 72 formed by the pixel defining portion 71. The pixel defining portion 71 covers a portion of the structure of the first electrode 41, and a portion of the structure of the first electrode 41 is exposed relative to the pixel opening 72.

[0141] In this embodiment, since the pixel defining portion 71 can cover a portion of the structure of the first electrode 41, it can protect that portion of the structure, thereby reducing the risk of damage and oxidation to the portion of the first electrode 41 by subsequent etching processes and improving the reliability of the first electrode 41. The specific material composition of the pixel defining portion 71 is not limited in this embodiment; optionally, the pixel defining portion 71 may include insulating materials, such as silicon oxide and silicon nitride.

[0142] In some embodiments, the second protective portion 52 includes a third portion 521 located within the pixel opening 72 and a fourth portion 522 located on the side of the pixel limiting portion 71 facing away from the substrate 10, wherein the orthographic projection of the light-emitting structure 31 on the substrate 10 and the orthographic projection of the fourth portion 522 on the substrate 10 overlap.

[0143] In related technologies, the structure in the light-emitting structure 31 that can achieve the light-emitting effect usually needs to be in contact with the first electrode 41. In other words, the light-emitting part of the light-emitting structure 31 is usually located in the orthogonal projection of the pixel opening 72 into the orthogonal projection of the substrate 10.

[0144] In this embodiment, the second protective portion 52 and the first electrode 41 can be electrically connected, so they can transmit the same signal. Furthermore, in addition to the third portion 521 located within the pixel opening 72, the second protective portion 52 can also include a fourth portion 522 extending to the side of the pixel limiting portion 71 facing away from the substrate 10. The fourth portion 522 can be attached to the light-emitting structure 31, so it can also drive a portion of the light-emitting structure 31 to achieve a light-emitting effect, thereby increasing the light-emitting area corresponding to a single light-emitting structure 31, which helps to improve the maximum display brightness of the display panel and has strong practicality.

[0145] In some embodiments, please refer to Figure 11 The display panel also includes a fifth protective portion 54, which is located on the side of the isolation structure 20 facing the substrate 10 and is attached to the isolation structure 20. The fifth protective portion 54 is disposed in the same layer as the second protective portion 52 and includes the same material.

[0146] In this embodiment, the second protective part 52 and the fifth protective part 54 can be manufactured together in the same manufacturing process. Furthermore, the second protective part 52 and the fifth protective part 54 are manufactured before the isolation structure 20.

[0147] In this design, the fifth protective part 54 can be electrically connected to the first isolation part 22 in the isolation structure 20. Based on this, the second electrode 61 only needs to contact the fifth protective part 54 to achieve the electrical connection between itself and the first isolation part 22. This reduces the difficulty of electrical connection between the second electrode 61 and the first isolation part 22, improves the reliability of the electrical connection between the two, and has strong practicality.

[0148] Thirdly, please refer to Figure 12 This application provides a display device, which includes the display panel in any of the foregoing embodiments.

[0149] It should be noted that the display device provided in this application embodiment has the beneficial effects of the display panel in any of the foregoing embodiments. For details, please refer to the foregoing description of the beneficial effects of the display panel. This application embodiment will not repeat the description.

[0150] Fifthly, please refer to Figure 13 and Figures 14a to 14c This application provides a method for manufacturing a display panel, comprising:

[0151] S100: A first electrode layer is formed on one side of the substrate.

[0152] Please see Figure 14aIn step S100, a first electrode layer 40 is formed on one side of the substrate 10 in the thickness direction X, and the first electrode layer 40 includes a plurality of first electrodes 41 disposed at intervals.

[0153] S110: An isolation structure is formed on one side of the substrate.

[0154] Please see Figure 14b In step S110, the isolation structure 20 encloses and forms an isolation opening 21, and the orthographic projection of the first electrode 41 onto the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 onto the substrate 10. The specific structural composition of the isolation structure 20 is not limited in this embodiment. Optionally, the isolation structure 20 includes a first isolation portion 22 and a second isolation portion 23 sequentially stacked along a direction away from the substrate 10.

[0155] S120: A protective layer is formed on the side of the first electrode layer away from the substrate.

[0156] Please see Figure 14c In step S120, the protective layer 50 includes a first protective portion 51 that is at least partially attached to the isolation structure 20. The first protective portion 51 can protect a portion of the structure in the isolation structure 20 and reduce the risk of oxidation on the surface of the isolation structure 20. Optionally, the first protective portion 51 is at least partially attached to the first isolation portion 22.

[0157] Please see Figure 15 and Figures 16a to 16b In some embodiments, step S120 includes:

[0158] S121: A protective material layer is formed on the side of the first electrode layer away from the substrate.

[0159] Please see Figure 16a In step S121, the protective material layer 50' may include a protective material portion 51' corresponding to the isolation opening 21, which covers the first electrode 41 and extends to the isolation structure 20.

[0160] S122: Pattern the protective material section.

[0161] Please see Figure 16b In step S122, the protective material portion can be patterned by etching or other methods to form a first protective portion 51 and a second protective portion 52 spaced apart. The first protective portion 51 is at least partially attached to the isolation structure 20 to protect it. The second protective portion 52 is at least partially attached to the first electrode 41 to protect it, reducing damage to the first electrode 41 from subsequent etching processes and the risk of oxidation.

[0162] In some embodiments, please refer to Figure 17 Step S110 includes:

[0163] S111: An isolation material layer is formed on one side of the substrate.

[0164] In step S111, the insulating material layer can be a full-surface structure and can include multiple stacked film layers. The insulating material layer covers the first electrode 41.

[0165] S112: Patterning of the isolation material layer.

[0166] In step S112, the isolation material layer is patterned through etching and other processes to form the isolation structure 20. Furthermore, during the fabrication of the isolation structure 20, the surface of the first electrode 41 easily comes into contact with the environment and forms an oxide structure. Based on this, step S112 can also remove at least part of the oxide structure on the first electrode 41, thereby helping to further reduce the impedance corresponding to the first electrode 41 and reduce the light-emitting power consumption of the display panel.

[0167] Please see Figure 18 and Figure 19 Or, in some other embodiments, before step S110, the method further includes:

[0168] S130: A pixel definition material layer is formed on one side of the substrate.

[0169] Please see Figure 19 In step S130, the pixel definition material layer 70' is used to form the pixel definition layer 70 in the future. The pixel definition material layer 70' is a whole surface structure and is set to cover the first electrode 41. In this way, the pixel definition material layer 70' can isolate the first electrode 41 from the environment.

[0170] Furthermore, after step S110, the following steps are also included:

[0171] S140: Defines the material layer patterning process for pixels.

[0172] In step S140, the pixel definition material layer 70' is patterned using processes such as etching to form the pixel definition layer 70. The pixel definition layer 70 may include a pixel defining portion 71 and a pixel opening 72 formed by the pixel defining portion 71. Since step S140 occurs after step S110, the pixel definition material layer 70' always covers the first electrode 41 during the formation of the isolation structure 20. This reduces the risk of oxidation of the first electrode 41 during the fabrication of the isolation structure 20.

[0173] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0174] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A display panel, comprising a substrate, characterized in that, The display panel also includes: An isolation structure is disposed on one side of the substrate and encloses an isolation opening; A first electrode layer is disposed on one side of the substrate and includes a first electrode, which is disposed corresponding to the isolation opening; A light-emitting functional layer, disposed on the side of the first electrode layer opposite to the substrate, includes a light-emitting structure corresponding to the isolation opening; and... A first protective portion is disposed on the side of the first electrode layer away from the substrate and located within the isolation opening. The first protective portion includes a second portion disposed on the side of the light-emitting structure facing the substrate. At least a portion of the first protective portion is attached to the isolation structure. The first protective portion is formed after the first electrode layer and the isolation structure and before the light-emitting functional layer.

2. The display panel according to claim 1, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate. At least a portion of the first protective part is fitted to the first isolation part.

3. The display panel according to claim 2, characterized in that, The display panel further includes a second electrode layer disposed on the side of the light-emitting functional layer opposite to the substrate, the second electrode layer including a second electrode disposed corresponding to the isolation opening.

4. The display panel according to claim 3, characterized in that, The first isolation portion includes a conductive material, and the second electrode is electrically connected to the first isolation portion.

5. The display panel according to claim 2, characterized in that, Along the direction away from the substrate, the cross-sectional dimension of the first isolation portion gradually increases; or, Along the direction away from the substrate, the cross-sectional size of the first isolation portion gradually decreases.

6. The display panel according to claim 3, characterized in that, The first protective portion includes a first part that is attached to the first isolation portion, and the first part is sandwiched between the first isolation portion and the second electrode in a direction parallel to the plane of the substrate. The first part includes a conductive material, and the second electrode abuts against the first part.

7. The display panel according to claim 6, characterized in that, The second part includes a conductive material, and the second electrode part is located on the side of the second part away from the substrate and is attached to the second part.

8. The display panel according to claim 7, characterized in that, The display panel further includes a pixel definition layer disposed on one side of the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion; The second part is located on the side of the pixel defining portion away from the substrate and is attached to the pixel defining portion.

9. The display panel according to claim 6, characterized in that, The display panel further includes a third protective portion disposed on the side of the second isolation portion away from the substrate, and the third protective portion and the first protective portion are made of the same material.

10. The display panel according to any one of claims 1 to 3, characterized in that, It also includes a second protective portion disposed between the light-emitting functional layer and the first electrode, at least a portion of the second protective portion being attached to the first electrode, and the second protective portion being spaced apart from the first protective portion.

11. The display panel according to claim 10, characterized in that, The first protective part and the second protective part are made of the same material.

12. The display panel according to claim 11, characterized in that, The first protection section and the second protection section are arranged on the same layer.

13. The display panel according to claim 10, characterized in that, The display panel further includes a pixel definition layer disposed on the side of the first electrode layer opposite to the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion; The pixel defining portion covers a portion of the structure of the first electrode, and the portion of the first electrode located within the pixel opening is exposed relative to the pixel opening.

14. The display panel according to claim 13, characterized in that, The second protective portion includes a third portion located within the pixel opening and a fourth portion located on the side of the pixel defining portion facing away from the substrate; The light-emitting structure is arranged in an overlapping manner with the orthographic projection of the fourth part on the substrate.

15. The display panel according to claim 10, characterized in that, The first electrode includes a body portion and a fourth protective portion disposed on at least one side of the body portion along the thickness direction of the substrate.

16. The display panel according to claim 15, characterized in that, The orthographic projection of the fourth protective part onto the substrate covers the orthographic projection of the body part onto the substrate.

17. The display panel according to claim 15, characterized in that, The orthographic projection of the fourth protective part onto the substrate covers the orthographic projection of the second protective part onto the substrate.

18. The display panel according to claim 15, characterized in that, The second protective part and the fourth protective part are made of the same material.

19. A display panel, comprising a substrate, characterized in that, The display panel also includes: An isolation structure is disposed on one side of the substrate and encloses an isolation opening; A first electrode layer is disposed on one side of the substrate and includes a first electrode, which is disposed corresponding to the isolation opening; A light-emitting functional layer, disposed on one side of the substrate, includes a light-emitting structure, the light-emitting structure being disposed corresponding to the isolation opening; and... The second protective portion is disposed on the side of the first electrode layer away from the substrate, and at least a portion of the second protective portion is attached to the first electrode. A pixel definition layer is disposed on the side of the first electrode layer away from the substrate, and includes a pixel defining portion and a pixel opening, wherein the pixel opening is formed by the pixel defining portion. The portion of the first electrode located within the pixel opening is exposed relative to the pixel opening. The second protective portion and the pixel defining portion together cover the orthogonal projection of the light-emitting structure onto the substrate. The second protective portion is formed in front of the isolation structure.

20. The display panel according to claim 19, characterized in that, The second protective portion includes a third portion located within the pixel opening and a fourth portion located on the side of the pixel defining portion facing away from the substrate; The light-emitting structure is arranged in an overlapping manner with the orthographic projection of the fourth part on the substrate.

21. The display panel according to claim 20, characterized in that, The display panel further includes a fifth protective part, which is located on the side of the isolation structure facing the substrate and is attached to the isolation structure. The fifth protective section and the second protective section are arranged in the same layer and contain the same material.

22. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 21.

23. A method for manufacturing a display panel, characterized in that, include: A first electrode layer is formed on one side of the substrate, the first electrode layer including a plurality of first electrodes spaced apart; An isolation structure is formed on one side of the substrate, and the isolation structure encloses an isolation opening. The orthographic projection of the first electrode on the substrate is at least partially located within the orthographic projection of the isolation opening on the substrate. A protective layer is formed on the side of the first electrode layer away from the substrate, and the protective layer includes a first protective portion that is at least partially attached to the isolation structure. A light-emitting functional layer is formed on the side of the protective layer opposite to the substrate.

24. The preparation method according to claim 23, characterized in that, The step of forming a protective layer on the side of the first electrode layer away from the substrate includes: A protective material layer is formed on the side of the first electrode layer away from the substrate. The protective material layer includes a protective material portion disposed corresponding to the isolation opening. The protective material portion covers the first electrode and extends to the isolation structure. The protective material is patterned to form a first protective portion and a second protective portion spaced apart. At least a portion of the first protective portion is attached to the isolation structure, and at least a portion of the second protective portion is attached to the first electrode.

25. The preparation method according to claim 24, characterized in that, An isolation structure is formed on one side of the substrate, including: An isolation material layer is formed on one side of the substrate, and the isolation material layer covers the first electrode. The insulating material layer is patterned to form the insulating structure, and at least a portion of the oxide structure on the first electrode is removed.

26. The preparation method according to claim 24, characterized in that, Before forming the isolation structure on one side of the substrate, the method further includes: A pixel definition material layer is formed on one side of the substrate, and the pixel definition material layer covers the first electrode. After forming the isolation structure on one side of the substrate, the method further includes: The pixel definition material layer is patterned to form a pixel definition layer.

Images