Display panel, display device and preparation method of display panel

Abstract

The invention 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 function layer and a first protection part, the isolation structure is arranged on one side of the substrate and encloses to form 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 function 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 located in the isolation opening, and at least part of the first protection part is attached to the isolation opening. According to the display panel, the first protection part can separate at least part of the isolation structure from the external environment in the preparation process of the display panel, so that the protection effect on the isolation structure is achieved, and the risk that the isolation structure is oxidized is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] Flat display panels such as organic light emitting diode (OLED) panels and display panels using light emitting diode (LED) devices have the advantages of high image quality, power saving, thin body and wide application range. They are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc., becoming the mainstream display device. Summary of the Invention

[0003] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, which can improve reliability.

[0004] In a first aspect, embodiments of the present application provide a display panel comprising 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, enclosing an isolation opening. The first electrode layer is disposed on one side of the substrate, comprising a first electrode disposed corresponding to the isolation opening. The light-emitting functional layer is disposed on a side of the first electrode layer facing away from the substrate, comprising a light-emitting structure disposed corresponding to the isolation opening. The first protective portion is located on a side of the first electrode layer facing away from the substrate and within the isolation opening, with at least a portion of the first protective portion being disposed in contact with the isolation opening.

[0005] In some embodiments, the isolation structure includes a first isolation portion and a second isolation portion stacked in sequence in a direction away from the substrate, 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, and the first protection portion is at least partially attached to the first isolation portion.

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

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

[0008] In some embodiments, the display panel further includes a second electrode layer disposed on a side of the light-emitting functional layer facing away from the substrate, and the second electrode layer includes 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 protection portion includes a first portion that is aligned with the first isolation portion, the first portion being sandwiched between the first isolation portion and the second electrode in a direction parallel to the plane of the substrate. The first portion includes a conductive material, and the second electrode abuts the first portion.

[0011] In some embodiments, the first protection portion further includes a second portion disposed on a 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 including a pixel defining portion and a pixel opening formed by the pixel defining portion. The second portion is located on a side of the pixel defining portion facing away from the substrate and is disposed in contact with the pixel defining portion.

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

[0014] In some embodiments, the display panel further includes a second protection portion disposed between the light-emitting functional layer and the first electrode, at least a portion of the second protection portion is disposed in contact with the first electrode, and the second protection portion is spaced apart from the first protection portion.

[0015] In some embodiments, the first protection portion and the second protection portion include the same material.

[0016] In some embodiments, the first protection portion and the second protection portion are provided in the same layer.

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

[0018] In some embodiments, the second protection 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, and the orthographic projection of the light emitting structure on the substrate overlaps with the orthographic projection of the fourth portion on the substrate.

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

[0020] In some embodiments, the orthographic projection of the fourth protection portion on the substrate covers the orthographic projection of the main portion on the substrate.

[0021] In some embodiments, an orthographic projection of the fourth protection portion on the substrate covers an orthographic projection of the second protection portion on the substrate.

[0022] In a second aspect, an embodiment of the present application further provides a display panel, comprising a substrate, an isolation structure, a first electrode layer, a second protective portion, and a light-emitting functional layer, wherein 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 a side of the first electrode layer facing away from the substrate, and at least a portion of the second protective portion is disposed in contact with the first electrode. The light-emitting functional layer is disposed on a side of the second protective portion facing 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 a side of the first electrode layer facing away from the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening enclosed by the pixel defining portion. The pixel defining portion covers a portion of the first electrode structure, while a portion of the first electrode structure is exposed relative to the pixel opening.

[0024] In some embodiments, the second protection 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, and the orthographic projection of the light-emitting structure on the substrate overlaps with the orthographic projection of the fourth portion on the substrate.

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

[0026] In a third aspect, an embodiment of the present application provides a display device, comprising the display panel in any of the aforementioned embodiments.

[0027] In a fourth aspect, an embodiment of the present application provides a method for manufacturing a display panel, comprising:

[0028] forming a first electrode layer on one side of the substrate, the first electrode layer comprising a plurality of first electrodes arranged at intervals;

[0029] An isolation structure is formed on one side of the substrate, the isolation structure encloses an isolation opening, and an 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 facing away from the substrate, and the protective layer includes a first protective portion that is at least partially in contact with the isolation structure.

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

[0032] forming a protective material layer on a side of the first electrode layer facing away from the substrate, the protective material layer comprising a protective material portion arranged corresponding to the isolation opening, the protective material portion covering the first electrode and extending to the isolation structure;

[0033] The protective material portion is patterned to form a first protective portion and a second protective portion that are spaced apart, wherein at least a portion of the first protective portion is aligned with the isolation structure, and at least a portion of the second protective portion is aligned with the first electrode.

[0034] In some embodiments, forming an isolation structure on one side of a substrate includes:

[0035] forming an isolation material layer on one side of the substrate, wherein the isolation material layer covers the first electrode arrangement;

[0036] The isolation material layer is patterned to form an isolation structure, and at least a portion of the oxidized 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, the method further includes:

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

[0041] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, which additionally includes a first protective portion formed behind a first electrode layer and an isolation structure. The first protective portion is located on one side of the first electrode layer, and on this basis, at least a portion of the first protective portion can be disposed in contact with the outer surface of the isolation structure. Therefore, during the display panel manufacturing process, the first protective portion can isolate at least a portion of the isolation structure from the external environment, thereby protecting the isolation structure and reducing the risk of oxidation of the isolation structure. This can ensure the reliability of the isolation structure in the final display panel after molding, and ensure the performance of the final display panel after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 is a schematic diagram of a cross-sectional structure of a display panel provided in an embodiment of the present application;

[0044] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at the middle area Q;

[0045] Figure 3 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0046] Figure 4 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0047] Figure 5 This is a schematic diagram of a manufacturing process of a display panel provided in an embodiment of the present application;

[0048] Figure 6 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0049] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at the middle area P;

[0050] Figure 8 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0051] Figure 9 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0052] Figure 10 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0053] Figure 11 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;

[0054] Figure 12 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0055] Figure 13 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

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

[0057] Figure 15 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

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

[0059] Figure 17 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0060] Figure 18 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

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

[0062] Marking Description:

[0063] 10. Substrate;

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

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

[0066] 40. First electrode layer; 41. First electrode; 411. Main body; 412. Fourth protection portion;

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

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

[0069] 70. Pixel definition layer; 71. Pixel defining portion; 72. Pixel opening;

[0070] 80. Planarization layer;

[0071] 90. Encapsulation layer;

[0072] B. Sacrifice Department;

[0073] 50', protective material layer; 51', protective material portion; 70', pixel definition material layer;

[0074] X, thickness direction. DETAILED DESCRIPTION

[0075] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0076] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0077] Organic light-emitting display panels typically use organic light-emitting devices as their light-emitting structure to achieve display effects. Two electrodes, a cathode and an anode, are typically provided on either side of the light-emitting structure to drive the light-emitting structure to achieve its light-emitting function.

[0078] In related art, display panels may be provided with isolation structures, which enable spacing between different light-emitting structures. However, during the manufacturing process, at least part of the isolation structure may be exposed to the environment and oxidized, thereby changing the isolation structure's inherent properties and affecting the performance of the resulting display panel.

[0079] In view of this, first of all, please refer to Figure 1 and Figure 2The embodiment of the present 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 arranged on one side of the substrate 10, and the isolation structure 20 encloses an isolation opening 21. The first electrode layer 40 is arranged on one side of the substrate 10, and the first electrode layer 40 includes a first electrode 41 arranged corresponding to the isolation opening 21. The light-emitting functional layer 30 is arranged on the side of the first electrode layer 40 facing away from the substrate 10, and the light-emitting functional layer 30 includes a light-emitting structure 31 arranged corresponding to the isolation opening 21. The first protective portion 51 is located on the side of the first electrode layer 40 facing away from the substrate 10 and is located within the isolation opening 21. At least a portion of the first protective portion 51 is arranged in contact with the isolation opening 21. In other words, at least a portion of the first protective portion 51 is arranged in contact with the isolation opening 21. It should be noted that the "adherent arrangement" recorded in this application can be understood as "close contact or direct contact with the surface."

[0080] The substrate 10 mainly plays a supporting role, and other film layers are stacked on the substrate 10 in sequence. The stacking arrangement mentioned here means that the other film layers are arranged in sequence along the thickness direction X of the substrate 10, wherein the substrate 10 may include multiple film layer structures. The specific film layer structure composition of the film layer is not limited in the embodiment of the present application. And the thickness direction X of the other film layers located on one side of the substrate 10 is usually consistent with the thickness direction X of the substrate 10 itself. Therefore, for the convenience of expression, the thickness direction X of the substrate 10 or the thickness direction X of other film layers mentioned later in the embodiment of the present application are all illustrated 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 on the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 on the substrate 10. The first electrode 41 can be at least partially disposed within the isolation opening 21, or at least partially located on the side of the isolation opening 21 facing the substrate 10, and this is not limited in this embodiment of the present application.

[0082] Similarly, the light-emitting functional layer 30 includes a light-emitting structure 31 disposed corresponding to the isolation opening 21. The phrase "the light-emitting structure 31 is disposed corresponding to the isolation opening 21" means that the orthographic projection of the light-emitting structure 31 on the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 on the substrate 10. The light-emitting structure 31 may be at least partially located within the isolation opening 21, or at least partially located on the side of the isolation opening 21 facing the substrate 10, and this is not limited in this embodiment of the present application.

[0083] The light-emitting structures 31 include, but are 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 disposed in correspondence with the light-emitting structure 31. For example, the orthographic projection of the first electrode 41 on the substrate 10 at least partially overlaps with the orthographic projection of the light-emitting structure 31 on the substrate 10. The first electrode 41 is used to drive and control the light-emitting structure 31 to emit light. Furthermore, the display panel may further 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. The first electrode 41 and the second electrode 61 are used to jointly drive the light-emitting structure 31 to emit light.

[0085] The light-emitting functional layer 30 is typically prepared and formed after the isolation structure 20 is formed. The arrangement of the isolation structure 20 allows the light-emitting functional layer 30 to form a plurality of 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 will first fall into each isolation opening 21, and then the red light-emitting material in the isolation openings 21 will be selectively etched away, while the red light-emitting material in the isolation openings 21 will be retained to form the red light-emitting structure 31. Subsequently, the green light-emitting material corresponding to the green light-emitting structure 31 will fall into each isolation opening 21, and then the green light-emitting material in the isolation openings 21 will be selectively etched away, while the green light-emitting material in the isolation openings 21 will be 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 of the different isolation openings 21, satisfying the preparation of the light-emitting functional layer 30.

[0086] Furthermore, during the display panel manufacturing process, the first electrode layer 40 is typically formed first, followed by the isolation structure 20, followed by the sequential formation of the light-emitting functional layer 30 and the second electrode layer 60, and finally, the encapsulation structure is formed to provide encapsulation and protection for the light-emitting structure 31 and the isolation structure 20. During this process, for a period of time after the isolation structure 20 is manufactured, the surface of at least part of the isolation structure 20 will be exposed to the environment, which may cause oxidation and affect the performance of the isolation structure 20.

[0087] To address this issue, the embodiment of the present application further includes a first protective portion 51, which is formed behind 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 on this basis, at least a portion of the first protective portion 51 can be disposed in contact with the outer surface of the isolation structure 20. Therefore, during the display panel manufacturing process, the first protective portion 51 can isolate at least a portion of the isolation structure 20 from the external environment, thereby protecting the isolation structure 20 and reducing the risk of oxidation of the isolation structure 20. This can ensure the reliability of the isolation structure 20 in the final display panel after molding, and ensure the performance of the final display panel after molding.

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

[0089] In some embodiments, 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 in sequence in a direction away from the substrate 10. The orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the second isolation portion 23 on the substrate 10, and the first protective portion 51 is at least partially arranged to fit the first isolation portion 22.

[0090] The isolation structure 20 includes at least two structures, a first isolation part 22 and a second isolation part 23. The orthographic projection of the first isolation part 22 on the substrate 10 is located within the orthographic projection of the second isolation part 23 on the substrate 10. For example, the longitudinal section of the isolation structure 20 can be T-shaped. This design helps in the preparation process of the light-emitting functional layer 30, making it difficult for the light-emitting material to extend along the side wall of the first isolation part 22 to the side wall of the second isolation part 23, thereby realizing the preparation and mutual separation of the light-emitting structures 31 corresponding to different isolation openings 21. Furthermore, according to different actual needs, the orthographic projection of the isolation structure 20 on the substrate 10 can be in a grid shape, or in a strip shape, etc.

[0091] The embodiment of the present application does not limit the material composition of the first isolation portion 22 and the second isolation portion 23. The first isolation portion 22 and the second isolation portion 23 may both include conductive materials, or the first isolation portion 22 may include conductive materials and the second isolation portion 23 may include insulating materials, or both may include insulating materials at the same time.

[0092] In addition, the specific shape and size of the first isolation portion 22 and the second isolation portion 23 are not limited in this embodiment of the application. Figure 1 As shown, in the direction away from the substrate 10, the cross-sectional dimension of the first isolation portion 22 tends to decrease gradually, that is, the longitudinal section of the first isolation portion 22 may be a trapezoidal structure. Figure 3 As shown, in the direction away from the substrate 10, the cross-sectional size of the first isolation portion 22 tends to gradually increase, that is, the longitudinal section of the first isolation portion 22 can also be an inverted trapezoidal structure, as long as the orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the second isolation portion 23 on the substrate 10.

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

[0094] In some embodiments, the display panel also includes a second electrode layer 60 arranged 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. The second electrode 61 is arranged corresponding to the isolation opening 21. It should be noted that "the second electrode 61 is arranged corresponding to the isolation opening 21" means that the orthographic projection of the second electrode 61 on the substrate 10 is at least partially located within the orthographic projection of the isolation opening 21 on the substrate 10.

[0095] In related art, the second electrode 61 is typically a planar electrode, whose orthographic projection on the substrate 10 can simultaneously cover all of the light-emitting structures 31. However, in the embodiment of the present application, the presence of the isolation structure 20 can separate the different second electrodes 61 corresponding to at least some different light-emitting structures 31 during the display panel manufacturing process, so that the second electrode layer 60 includes a plurality of second electrodes 61, and the second electrodes 61 are arranged corresponding to the isolation openings 21.

[0096] It should be noted that the “second electrode 61 is arranged corresponding to the isolation opening 21” mentioned in the embodiment of the present application means that 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. The second electrode 61 may be completely located within the isolation opening 21, or the second electrode 61 may be partially located within the isolation opening 21. Furthermore, each second electrode 61 may be arranged corresponding to each light-emitting structure 31, that is, the orthographic projection of a single second electrode 61 on the substrate 10 only overlaps with the orthographic projection of one light-emitting structure 31 on the substrate 10; or a single second electrode 61 may also be arranged corresponding to multiple light-emitting structures 31 at the same time, that is, the orthographic projection of a single second electrode 61 on the substrate 10 overlaps with the orthographic projection of multiple light-emitting structures 31 on the substrate 10 at the same time.

[0097] In the embodiment of the present application, the presence of the isolation structure 20 enables 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 realizing partitioned control or independent control of different light-emitting structures 31, which has strong flexibility and practicality.

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

[0099] The first isolation portion 22 includes a conductive material, and the second electrode 61 can be electrically connected to the first isolation portion 22 to achieve transmission of corresponding signals, thereby meeting the need to control whether the light-emitting structure 31 emits light. Specifically, at least a portion of the second electrode 61 can be directly in contact with the first isolation portion 22 to achieve electrical connection therebetween, or the second electrode 61 can be in contact with the first protection portion 51, and the first protection portion 51 can include a conductive material, which can also achieve electrical connection between the second electrode 61 and the first isolation portion 22.

[0100] Furthermore, since at least part of the structure in the first protection portion 51 is arranged in contact with the first isolation portion 22, the first protection portion 51 helps to reduce the probability of oxidation of the first isolation portion 22, thereby reducing the risk of the first isolation portion 22 increasing its own resistance due to oxidation, thereby helping to improve the conductivity between the first isolation portion 22 and the second electrode 61, and reducing the corresponding power consumption when the display panel is in use.

[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 an alloy. Furthermore, depending on actual needs, the second isolation portion 23 may include a conductive material or an insulating material.

[0102] In some optional embodiments, the first protection portion 51 includes a first portion 511 that is disposed in contact with the first isolation portion 22. The first portion 511 is sandwiched between the first isolation portion 22 and the second electrode 61 in a direction parallel to the plane of the substrate 10. 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 portion 511. The first portion 511 can be aligned with the sidewall of the first isolation portion 22. The first portion 511 is sandwiched between the first isolation portion 22 and the second electrode 61. After the isolation structure 20 is formed, the first portion 511 is formed first, followed by the second electrode 61. This reduces the risk of oxidation of the first isolation portion 22 during the preparation of the second electrode 61, thereby improving the reliability of the first isolation portion 22.

[0104] Furthermore, the first part 511 includes a conductive material, and the second electrode 61 is arranged in contact with the first part 511. This design allows the power signal to be transmitted between the second electrode 61 and the first isolation part 22 with the help of the first part 511, thereby meeting the signal transmission requirements and realizing the control of whether the light-emitting structure 31 emits light or not.

[0105] In some embodiments, as Figure 2 As shown, the first protection portion 51 further includes a second portion 512 which is disposed on a side of the light emitting structure 31 facing the substrate 10 and connected to the first portion 511 .

[0106] The first protection portion 51 includes a first portion 511 and a second portion 512. The first portion 511 and the second portion 512 are fabricated together in the same process. The second portion 512 is located on the side of the light-emitting structure 31 facing the substrate 10. This means that the first protection portion 51 is fabricated 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] Further optionally, the second portion 512 includes a conductive material, and the second electrode 61 is partially located on a side of the second portion 512 facing away from the substrate 10 and is disposed in contact with the second portion 512 .

[0108] From a manufacturing perspective, the second electrode 61 is more easily fitted with the second portion 512 than with the first portion 511. Therefore, the second portion 512 in the embodiment of the present application can also play a role in contacting and electrically connecting with the second electrode 61, which helps to improve the reliability of signal transmission between the first protective portion 51, the first isolation portion 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 a side of the pixel defining portion 71 facing away from the substrate 10 and is disposed in 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 is used to define the light-emitting structure 31, that is, 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 embodiment of the present application does not limit the relative positional relationship between the pixel definition layer 70 and the isolation structure 20. For example, at least part of the structure of the isolation structure 20 can be provided in the same layer as the pixel defining portion 71; or the isolation structure 20 can also be located on the side of the pixel defining portion 71 away from the substrate 10. Among them, Figure 1 FIG. 1 is a structural diagram illustrating a case where the isolation structure 20 is located on a side of the pixel defining portion 71 facing away from the substrate 10 .

[0111] In the embodiment of the present application, the second portion 512 is located on the side of the pixel defining portion 71 facing away from the substrate 10 and is arranged in contact with the pixel defining portion 71. That is, the first protective portion 51 is formed after the pixel definition 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 preparation of the light-emitting functional layer 30, thereby improving the structural integrity and reliability of the pixel defining portion 71. This further helps to improve the extension reliability of the portion 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, see Figure 4 The display panel further includes a third protection portion 53 disposed on a side of the second isolation portion 23 facing away from the substrate 10 . The third protection portion 53 and the first protection portion 51 are made of the same material.

[0113] In the embodiment of the present application, the first protection portion 51 and the third protection portion 53 can be formed together in the same process. Specifically, during the preparation process, part of the material falls on the side of the second isolation portion 23 facing away from the substrate 10 to form the third protection portion 53, and part of the material falls within the isolation opening 21 to form the first protection portion 51. The first protection portion 51 can be laminated to the first isolation portion 22 to protect the first isolation portion 22. The third protection portion 53 can be laminated to the second isolation portion 23 to protect the second isolation portion 23.

[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 preparation process, the material for forming the light-emitting structure 31, the material for forming the second electrode 61, and the material for forming the encapsulation layer 90 are sequentially formed at the corresponding positions of the isolation opening 21. Afterwards, a sacrificial portion B will be provided at the specific position of the isolation opening 21. The sacrificial portion B can protect the light-emitting structure 31, the second electrode 61 and the encapsulation layer 90 located at the position of the isolation opening 21 from being etched and removed, and the sacrificial portion B will be removed in subsequent processes.

[0115] But if Figure 5 As shown, the sacrificial portion B generally does not cover the second isolation portion 23, and therefore the sacrificial portion B cannot effectively protect the isolation structure 20. On this basis, the third protection portion 53 in the embodiment of the present application is located on the side of the second isolation portion 23 facing away from the substrate 10. The third protection portion 53 can protect the second isolation portion 23, reduce the 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, see Figure 6 and Figure 7 The display panel further includes a second protection portion 52 disposed between the light-emitting functional layer 30 and the first electrode 41 , at least a portion of the second protection portion 52 is adhered to the first electrode 41 , and the second protection portion 52 is spaced apart from the first protection portion 51 .

[0117] During the display panel manufacturing process, the first electrode layer 40 is typically prepared before the isolation structure 20. Specifically, the first electrode layer 40 can be formed using a physical vapor deposition (PVD) process, and then a specific film layer is formed above the first electrode layer 40 using a chemical vapor deposition (CVD) or physical vapor deposition process. This film layer is then etched using a wet or dry etching method to form the isolation structure 20. During this process, the first electrode 41 is easily affected by the etching corresponding to the isolation structure 20, resulting in the risk of 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 has to undergo an etching process. On this basis, the first electrode 41 is easily affected by the double etching corresponding to the pixel definition layer 70 and the isolation structure 20, further increasing the risk of damage to the first electrode 41.

[0119] To address this issue, the present embodiment includes a second protective portion 52 . The second protective portion 52 is located on the side of the first electrode 41 facing away from the substrate 10 and is in close contact with the first electrode 41 . The second protective portion 52 protects the first electrode 41 , reducing the risk of damage to the first electrode 41 during the etching process and improving the reliability of the first electrode 41 . Furthermore, the second protective portion 52 helps 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.

[0120] Furthermore, the second protection portion 52 needs to meet the driving requirements of the first electrode 41 for the light-emitting structure 31, so the second protection portion 52 is generally provided with a conductive material. The first protection portion 51 needs to meet the electrical connection requirements between the second electrode 61 and the first isolation portion 22, so the first protection portion 51 may also include a conductive material. Furthermore, to reduce the risk of signal crosstalk between the two, the embodiment of the present application further separates the first protection portion 51 and the second protection portion 52 to provide relative insulation between them.

[0121] In some embodiments, the first protection portion 51 and the second protection portion 52 include the same material.

[0122] As can be seen from the foregoing, the first protection portion 51 needs to be made of a conductive material to ensure electrical connection between the second electrode 61 and the first isolation portion 22. The second protection portion 52 needs to be made of a conductive material to ensure electrical drive of the light-emitting structure 31 by the first electrode 41. Based on this, the present embodiment of the present invention reduces the manufacturing cost of the display panel by configuring the first protection portion 51 and the second protection portion 52 to be made of the same material.

[0123] The embodiment of the present application does not limit the relative positional relationship between the first protection portion 51 and the second protection portion 52. In some optional embodiments, the first protection portion 51 and the second protection portion 52 are provided in the same layer.

[0124] In the embodiment of the present application, the first protection portion 51 and the second protection portion 52 are made of the same material and are provided in the same layer, so that the first protection portion 51 and the second protection portion 52 can 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 portion 51 and the second protective portion 52 need to be spaced apart, an etching process is required during the preparation of the first protective portion 51 and the second protective portion 52. During this process, the display panel can selectively include at least one of the first protective portion 51 and the second protective portion 52, depending on actual use needs. In other words, the display panel can retain only the first protective portion 51, only the second protective portion 52, or both the first and second protective portions 51 and 52, depending on needs.

[0126] In some embodiments, the display panel further includes a pixel definition layer 70 disposed on a 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 first electrode 41, and a portion of the first electrode 41 is exposed relative to the pixel opening 72.

[0127] In the embodiment of the present application, since the pixel defining portion 71 can cover a portion of the structure of the first electrode 41, the pixel defining portion 71 can protect the portion of the structure of the first electrode 41, thereby reducing the risk of damage and oxidation of the portion of the first electrode 41 during subsequent etching processes, thereby improving the reliability of the first electrode 41. The embodiment of the present application does not limit the specific material composition of the pixel defining portion 71. Optionally, the pixel defining portion 71 may include an insulating material, such as silicon oxide or silicon nitride.

[0128] In some embodiments, as Figure 6 and Figure 7 As shown, the second protection 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 defining portion 71 facing away from the substrate 10, and the orthographic projection of the light-emitting structure 31 on the substrate 10 overlaps with the orthographic projection of the fourth portion 522 on the substrate 10.

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

[0130] In the embodiment of the present application, the second protection portion 52 and the first electrode 41 can be electrically connected, so that the two can transmit the same signal. Furthermore, in addition to including the third portion 521 located within the pixel opening 72, the second protection portion 52 can also include a fourth portion 522 extending to the side of the pixel defining portion 71 away from the substrate 10. The fourth portion 522 can be arranged in affixed relation to the light-emitting structure 31. Therefore, the fourth portion 522 can also drive part of the structure 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, thereby helping to improve the maximum display brightness corresponding to the display panel, and having strong practicality.

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

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

[0133] The fourth protective portion 412 is used 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 manufacture and use of the display panel, moisture and other factors may penetrate the planarization layer 80, causing the first electrode 41 to oxidize, which is detrimental to the display panel's luminous efficiency. Furthermore, the placement of the fourth protective portion 412 on the side of the main body 411 facing the substrate 10 reduces the risk of oxidation of the main body 411, improves the structural reliability of the first electrode 41, and contributes to increased luminous efficiency and service life of the display panel.

[0134] Providing the fourth protective portion 412 on the side of the main body 411 away from the substrate 10 helps 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 help to improve the corresponding luminous efficiency and service life of the display panel.

[0135] The present embodiment does not limit the relative positional relationship between the fourth protection portion 412 and the main body portion 411. Optionally, the orthographic projection of the fourth protection portion 412 on the substrate 10 overlaps the orthographic projection of the main body portion 411 on the substrate 10. Further, optionally, the orthographic projection of the fourth protection portion 412 on the substrate 10 overlaps the orthographic projection of the second protection portion 52 on the substrate 10.

[0136] The present embodiment does not limit the composition of the second protection portion 52 and the fourth protection portion 412. Optionally, to ensure electrical connection to the first electrode 41 and to electrically drive the light-emitting structure 31, the second protection portion 52 and the fourth protection portion 412 may both comprise a conductive material. Furthermore, the second protection portion 52 and the fourth protection portion 412 may comprise the same material. For example, the second protection portion 52 and the fourth protection portion 412 may both comprise indium tin oxide, and the first electrode 41 may comprise metallic silver.

[0137] Second, see Figure 10 The embodiment of the present application further provides a display panel, which includes a substrate 10, an isolation structure 20, a first electrode layer 40, a second protection 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 protection portion 52 is located on the side of the first electrode layer 40 facing away from the substrate 10, and at least a portion of the second protection portion 52 is disposed in contact with the first electrode 41. The light-emitting functional layer 30 is disposed on the side of the second protection portion 52 facing 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] The embodiment of the present application adds a second protective portion 52, which is located on the side of the first electrode 41 away from the substrate 10 and is arranged in contact with the first electrode 41. The second protective portion 52 can protect the first electrode 41, reduce the risk of damage to the first electrode 41 due to subsequent etching processes, and improve the reliability of the first electrode 41. At the same time, the second protective portion 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 corresponding luminous efficiency and service life of the display panel.

[0139] It should be noted that the first protection portion 51 in the aforementioned embodiment can be provided in the same layer as the second protection portion 52 in the embodiment of the present application and made of the same material, so that both can be formed together in the same process. Based on this, the display panel can selectively include at least one of the first protection portion 51 and the second protection portion 52, depending on actual use needs. That is, the display panel can retain only the first protection portion 51, only the second protection portion 52, or both the first protection portion 51 and the second protection portion 52, depending on needs.

[0140] In some embodiments, the display panel further includes a pixel definition layer 70 disposed on a 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 first electrode 41, while a portion of the first electrode 41 is exposed relative to the pixel opening 72.

[0141] In the embodiment of the present application, since the pixel defining portion 71 can cover a portion of the structure of the first electrode 41, the pixel defining portion 71 can protect the portion of the structure of the first electrode 41, thereby reducing the risk of damage and oxidation of the portion of the first electrode 41 during subsequent etching processes, thereby improving the reliability of the first electrode 41. The embodiment of the present application does not limit the specific material composition of the pixel defining portion 71. Optionally, the pixel defining portion 71 may include an insulating material, such as silicon oxide or silicon nitride.

[0142] In some embodiments, the second protection 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 defining portion 71 facing away from the substrate 10, and the orthographic projection of the light-emitting structure 31 on the substrate 10 overlaps with the orthographic projection of the fourth portion 522 on the substrate 10.

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

[0144] In the embodiment of the present application, the second protection portion 52 and the first electrode 41 can be electrically connected, so that the two can transmit the same signal. Furthermore, in addition to including the third portion 521 located within the pixel opening 72, the second protection portion 52 can also include a fourth portion 522 extending to the side of the pixel defining portion 71 away from the substrate 10. The fourth portion 522 can be arranged in affixed relation to the light-emitting structure 31. Therefore, the fourth portion 522 can also drive part of the structure 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, thereby helping to improve the maximum display brightness corresponding to the display panel, and having strong practicality.

[0145] In some embodiments, see Figure 11 The display panel further includes a fifth protection portion 54, which is located on a side of the isolation structure 20 facing the substrate 10 and is aligned with the isolation structure 20. The fifth protection portion 54 is disposed on the same layer as the second protection portion 52 and includes the same material.

[0146] In the embodiment of the present application, the second protection portion 52 and the fifth protection portion 54 can be prepared and formed together in the same preparation process. Furthermore, the second protection portion 52 and the fifth protection portion 54 are prepared and formed before the isolation structure 20 .

[0147] With this design, the fifth protection portion 54 can be electrically connected to the first isolation portion 22 in the isolation structure 20. Furthermore, as long as the second electrode 61 contacts the fifth protection portion 54, it can be electrically connected to the first isolation portion 22. This reduces the difficulty of electrically connecting the second electrode 61 to the first isolation portion 22, improves the reliability of the electrical connection between the two, and provides greater practicality.

[0148] Thirdly, please refer to Figure 12 , an embodiment of the present application provides a display device, the display device including the display panel in any of the aforementioned embodiments.

[0149] It should be noted that the display device provided in the embodiment of the present application has the beneficial effects of the display panel in any of the aforementioned embodiments. Please refer to the aforementioned description of the beneficial effects of the display panel for details, and the embodiment of the present application will not be repeated.

[0150] Fifth, please refer to Figure 13 14 , an embodiment of the present application provides a method for manufacturing a display panel, including:

[0151] S100: forming a first electrode layer on one side of the substrate.

[0152] See also Figure 14aIn step S100 , a first electrode layer 40 is formed on one side of the substrate 10 in the thickness direction X. The first electrode layer 40 includes a plurality of first electrodes 41 that are spaced apart.

[0153] S110: forming an isolation structure on one side of the substrate.

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

[0155] S120: forming a protective layer on a side of the first electrode layer facing away from the substrate.

[0156] See also Figure 14c In step S120, the protective layer 50 includes a first protective portion 51 that is at least partially aligned with the isolation structure 20. The first protective portion 51 can protect a portion of 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 aligned with the first isolation portion 22.

[0157] See also Figure 15 As shown in FIG16 , in some embodiments, step S120 includes:

[0158] S121: forming a protective material layer on a side of the first electrode layer facing away from the substrate.

[0159] See also Figure 16a In step S121 , the protection material layer 50 ′ may include a protection material portion 51 ′ corresponding to the isolation opening 21 , where the protection material portion 51 ′ covers the first electrode 41 and extends to the isolation structure 20 .

[0160] S122: performing patterning on the protective material portion.

[0161] See also Figure 16b In step S122, the protective material portion may be patterned by etching or other methods to form a first protective portion 51 and a second protective portion 52 spaced apart from each other. The first protective portion 51 is at least partially aligned with the isolation structure 20 to protect the isolation structure 20. The second protective portion 52 is at least partially aligned with the first electrode 41 to protect the first electrode 41, thereby reducing damage to the first electrode 41 during subsequent etching processes and the risk of oxidation of the first electrode 41.

[0162] In some embodiments, see Figure 17 , step S110 includes:

[0163] S111: forming an isolation material layer on one side of the substrate.

[0164] In step S111, the isolation material layer may be a whole surface structure, and may include a plurality of film layer structures stacked. The isolation material layer covers the first electrode 41.

[0165] S112: patterning the isolation material layer.

[0166] In step S112, the isolation material layer is patterned through etching or other processes to form the isolation structure 20. During the preparation of the isolation structure 20, the surface of the first electrode 41 is easily exposed to the environment and forms an oxidized structure. Furthermore, step S112 can also remove at least a portion of the oxidized structure on the first electrode 41, thereby further reducing the impedance of the first electrode 41 and the corresponding light-emitting power consumption of the display panel.

[0167] See also Figure 18 and Figure 19 , or in some other embodiments, before step S110, the method further includes:

[0168] S130: forming a pixel definition material layer on one side of the substrate.

[0169] See also Figure 19 In step S130 , the pixel definition material layer 70 ′ is used to subsequently form the pixel definition layer 70 . The pixel definition material layer 70 ′ is a full-surface structure and covers the first electrode 41 , so that the pixel definition material layer 70 ′ can isolate the first electrode 41 from the environment.

[0170] Furthermore, after step S110, the method further includes:

[0171] S140: Patterning the pixel definition material layer.

[0172] In step S140, the pixel definition material layer 70' is patterned by etching or other processes to form the pixel definition layer 70. The pixel definition layer 70 may include a pixel defining portion 71 and a pixel opening 72 enclosed by the pixel defining portion 71. Since step S140 is performed after step S110, the pixel definition material layer 70' is always disposed over 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 preparation of the isolation structure 20.

[0173] Although the embodiments disclosed in this application are as described above, the contents described are merely embodiments adopted to facilitate understanding of this application and are not intended to limit the present invention. Any person skilled in the art to which this application belongs may make any modifications and changes in the form and details 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 based on the scope defined by the appended claims.

[0174] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the scope of protection of this application.

Claims

1. A display panel comprising a substrate, It is characterized in that The display panel further includes: An isolation structure, which is disposed on one side of the substrate and encloses an isolation opening; A first electrode layer, the first electrode layer is arranged on one side of the substrate, and comprises a first electrode, and the first electrode is arranged corresponding to the isolation opening; a light-emitting functional layer, the light-emitting functional layer being arranged on a side of the first electrode layer away from the substrate, and comprising a light-emitting structure, the light-emitting structure being arranged corresponding to the isolation opening; and A first protection portion is disposed on a side of the first electrode layer away from the substrate and is located in the isolation opening, and at least a portion of the first protection portion is disposed in contact with the isolation structure.

2. The display panel according to claim 1, It is characterized in that The isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in 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 protection portion is disposed in close contact with the first isolation portion; Preferably, the display panel further comprises a second electrode layer arranged on a side of the light-emitting functional layer away from the substrate, and the second electrode layer comprises a second electrode arranged corresponding to the isolation opening; Preferably, the first isolation portion comprises a conductive material, and the second electrode is electrically connected to the first isolation portion; Preferably, along a direction away from the substrate, the cross-sectional dimension of the first isolation portion tends to gradually increase; or, Along the direction away from the substrate, the cross-sectional dimension of the first isolation portion tends to decrease gradually.

3. The display panel according to claim 2, It is characterized in that The first protection portion includes a first portion that is disposed in contact with the first isolation portion, and the first portion is sandwiched between the first isolation portion and the second electrode in a direction parallel to the plane where the substrate is located; The first portion includes a conductive material, and the second electrode abuts against the first portion; Preferably, the first protection portion further includes a second portion which is arranged on a side of the light emitting structure facing the substrate and connected to the first portion; Preferably, the second portion comprises a conductive material, and the second electrode portion is located on a side of the second portion away from the substrate and is disposed in close contact with the second portion; Preferably, the display panel further comprises a pixel definition layer disposed on one side of the substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening formed by enclosing the pixel defining portion; The second portion is located on a side of the pixel defining portion away from the substrate and is arranged in close contact with the pixel defining portion; Preferably, the display panel further comprises a third protection portion disposed on a side of the second isolation portion away from the substrate, and the third protection portion and the first protection portion are made of the same material.

4. The display panel according to any one of claims 1 to 3, It is characterized in that It also includes a second protection portion disposed between the light-emitting functional layer and the first electrode, wherein at least a portion of the second protection portion is disposed in contact with the first electrode, and the second protection portion is spaced apart from the first protection portion; Preferably, the first protection portion and the second protection portion comprise the same material; Preferably, the first protection portion and the second protection portion are arranged on the same layer; Preferably, the display panel further comprises a pixel definition layer disposed on a side of the first electrode layer away from the substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening surrounded 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 located within the pixel opening is exposed relative to the pixel opening; Preferably, the second protection portion includes a third portion located in the pixel opening, and a fourth portion located on a side of the pixel defining portion away from the substrate; The orthographic projection of the light emitting structure on the substrate and the orthographic projection of the fourth portion on the substrate are arranged to overlap.

5. The display panel according to claim 4, It is characterized in that The first electrode comprises a main body portion and a fourth protection portion disposed on at least one side of the main body portion along the thickness direction of the substrate; Preferably, the orthographic projection of the fourth protection portion on the substrate covers the orthographic projection of the main body portion on the substrate; Preferably, the orthographic projection of the fourth protection portion on the substrate covers the orthographic projection of the second protection portion on the substrate; Preferably, the second protecting portion and the fourth protecting portion include the same material.

6. A display panel comprising a substrate, It is characterized in that The display panel further includes: An isolation structure, which is disposed on one side of the substrate and encloses an isolation opening; A first electrode layer, the first electrode layer is arranged on one side of the substrate, and comprises a first electrode, and the first electrode is arranged corresponding to the isolation opening; a light-emitting functional layer, the light-emitting functional layer being disposed on one side of the substrate and comprising a light-emitting structure, the light-emitting structure being disposed corresponding to the isolation opening; and The second protection portion is arranged on a side of the first electrode layer away from the substrate, and at least a portion of the second protection portion is arranged in contact with the first electrode.

7. The display panel according to claim 6, It is characterized in that It also includes a pixel definition layer, which is arranged on a side of the first electrode layer away from the substrate, and includes a pixel definition portion and a pixel opening, wherein the pixel opening is formed by enclosing the pixel definition portion; The pixel defining portion covers a portion of the structure of the first electrode, and a portion of the first electrode located within the pixel opening is exposed relative to the pixel opening; Preferably, the second protection portion includes a third portion located in the pixel opening, and a fourth portion located on a side of the pixel defining portion away from the substrate; The orthographic projection of the light emitting structure on the substrate overlaps with the orthographic projection of the fourth portion on the substrate; Preferably, the display panel further comprises a fifth protection portion, the fifth protection portion is located on a side of the isolation structure facing the substrate, and is disposed in close contact with the isolation structure; The fifth protection portion and the second protection portion are arranged in the same layer and include the same material.

8. A display device, It is characterized in that Comprising the display panel as claimed in any one of claims 1 to 7.

9. A method for preparing a display panel, It is characterized in that include: forming a first electrode layer on one side of the substrate, wherein the first electrode layer includes a plurality of first electrodes arranged at intervals; An isolation structure is formed on one side of the substrate, the isolation structure encloses an isolation opening, and an 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 a 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.

10. The preparation method according to claim 9, It is characterized in that The step of forming a protective layer on a side of the first electrode layer facing away from the substrate comprises: forming a protective material layer on a side of the first electrode layer away from the substrate, the protective material layer comprising a protective material portion arranged corresponding to the isolation opening, the protective material portion covering the first electrode and extending to the isolation structure; Patterning the protective material portion to form a first protective portion and a second protective portion that are spaced apart, wherein at least a portion of the first protective portion is disposed in contact with the isolation structure, and at least a portion of the second protective portion is disposed in contact with the first electrode; Preferably, an isolation structure is formed on one side of the substrate, comprising: forming an isolation material layer on one side of the substrate, wherein the isolation material layer covers the first electrode arrangement; Patterning the isolation material layer to form the isolation structure, and removing at least a portion of the oxidized structure on the first electrode; Preferably, before forming the isolation structure on one side of the substrate, the method further comprises: forming a pixel definition material layer on one side of the substrate, wherein the pixel definition material layer covers the first electrode arrangement; 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.

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