Display panel and display device

Abstract

The invention provides a display panel and a display device. The problem that in the prior art, the yield of a display panel is low is solved. The display panel comprises: a substrate; the isolation structure is located on one side of the substrate, at least one isolation opening is defined by the isolation structure, and the isolation opening comprises a first side and a second side which are oppositely arranged; the auxiliary lap joint structure comprises at least one auxiliary lap joint part, the auxiliary lap joint part is located between the isolation structure and the substrate and located on the second side, and the edge, close to the isolation opening, of the auxiliary lap joint part is exposed out of the isolation opening; and at least one light-emitting device, at least part of the light-emitting device is located in the isolation opening, the light-emitting device comprises a first electrode, and on the second side, the first electrode is in lap joint with the auxiliary lap joint part and the isolation structure.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] In the process of fabricating a traditional display panel, light-emitting pixel patterning is usually achieved through a fine metal mask (FMM). The FMM technology is mature and has rich mass production experience. However, the FMM technology also has problems such as limited precision, high development cost, and long development cycle. The fine metal maskless technology eliminates the limitations of the traditional OLED process on the display screen size, resolution, and other screen performance, and has the advantages of high performance, full-domain size, and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, CN118781966 record the relevant content of the fine metal maskless technology for reference.

[0003] However, the yield of the display panel fabricated based on the fine metal maskless process is relatively low. Summary of the Invention

[0004] In view of this, embodiments of this application provide a display panel and a display device, which solve the problem of relatively low yield of the display panel in the prior art.

[0005] In a first aspect of this application, a display panel is provided, including: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing at least one isolation opening, the isolation opening including a first side and a second side that are oppositely arranged; an auxiliary overlapping structure including at least one auxiliary overlapping portion, the auxiliary overlapping portion being located between the isolation structure and the substrate and on the second side, and the auxiliary overlapping portion being exposed to the isolation opening near the edge of the isolation opening; and at least one light-emitting device, at least a part of the light-emitting device being located in the isolation opening, the light-emitting device including a first electrode, and on the second side, the first electrode overlapping with the auxiliary overlapping portion and the isolation structure.

[0006] In combination with the first aspect, in some possible implementation manners, the isolation structure covers one side edge of the auxiliary overlapping structure facing away from the isolation opening. The isolation structure includes an overlapping first part and second part. The first part is disposed on the side of the auxiliary overlapping part facing away from the substrate; the second part is located on the side of the first part facing away from the substrate and within the isolation opening, and the edge of the second part protrudes into the isolation opening and protrudes beyond the edge of the first part; preferably, the side of the auxiliary overlapping structure close to the isolation opening protrudes beyond the first part; the orthographic projection of the auxiliary overlapping part on the substrate is within the orthographic projection range of the second part on the substrate; preferably, the isolation structure further includes a third part located on the side of the first part close to the substrate, the orthographic projection of the first part on the substrate is within the orthographic projection range of the third part on the substrate, and the orthographic projection of the third part on the substrate is within the orthographic projection range of the second part on the substrate.

[0007] In combination with the first aspect, in some possible implementation manners, the edge of the third part protrudes into the isolation opening and protrudes beyond the edge of the first part. On the second side, a part of the first electrode covers the side of the auxiliary overlapping part facing away from the substrate and extends onto the isolation structure; preferably, on the second side, the first electrode covers the side surface of the third part close to the isolation opening and the side surface facing away from the substrate; in the direction pointing from the first side to the second side, the total overlapping length of the first electrode with the auxiliary overlapping part and the first part on the second side is 0.7 - 1 micrometer; preferably, on the second side, the first electrode is spaced apart from the first part; preferably, in the thickness direction of the display panel, the thickness of the auxiliary overlapping part is less than or equal to the thickness of the third part, and the thickness of the auxiliary overlapping part is 500 - 1000 angstroms; preferably, the display panel further includes a pixel definition layer located between the substrate and the isolation structure; on the first side, a part of the first electrode is located on the side of the pixel definition layer facing away from the substrate; preferably, on the first side, the thickness of the first electrode within the orthographic projection range of the second part on the substrate is 25 - 45 angstroms; preferably, on the second side, the thickness of the first electrode on the side of the pixel definition layer facing away from the substrate is 125 - 145 angstroms.

[0008] In combination with the first aspect, in some possible implementation manners, the distance between the edge of the third part close to the isolation opening and the edge of the second part close to the isolation opening is 0.2 - 0.7 micrometer; preferably, on the first side, the first electrode is spaced apart from the isolation structure; preferably, on the second side, the distance between the edge of the third part close to the isolation opening and the edge of the auxiliary overlapping part close to the isolation opening is 0.3 - 0.6 micrometer; preferably, in the direction pointing from the first side to the second side, the overlapping length of the first electrode with the auxiliary overlapping part is greater than 0.4 micrometer.

[0009] In combination with the first aspect, in some possible implementation manners, the distance between the edge of the first part close to the isolation opening and the edge of the second part close to the isolation opening is 0.7 - 1.4 micrometers; preferably, on the first side, the first electrode covers a part of the side of the third part facing away from the substrate; preferably, on the second side, the distance between the edge of the third part close to the isolation opening and the edge of the auxiliary overlapping part close to the isolation opening is 0.1 - 0.4 micrometers.

[0010] In combination with the first aspect, in some possible implementation manners, the resistivity of the auxiliary overlapping part is less than that of the first part; preferably, the material of the auxiliary overlapping part includes a metal material; preferably, the material of the auxiliary overlapping part includes copper.

[0011] In combination with the first aspect, in some possible implementation manners, at least one light-emitting device includes a first light-emitting device and a second light-emitting device arranged adjacent to each other, and the first light-emitting device and the second light-emitting device are arranged along a first direction; at least one auxiliary overlapping part includes a first auxiliary overlapping part on the side of the first light-emitting device close to the substrate and a second auxiliary overlapping part on the side of the second light-emitting device close to the substrate; the orthographic projection of the first auxiliary overlapping part on the substrate overlaps with a part of the orthographic projection of the first light-emitting device on the substrate; the orthographic projection of the second auxiliary overlapping part on the substrate overlaps with a part of the orthographic projection of the second light-emitting device on the substrate; preferably, the first auxiliary overlapping part and the second auxiliary overlapping part are arranged at intervals along the first direction, and the first auxiliary overlapping part and the second auxiliary overlapping part are respectively located on the same side of the first light-emitting device and the second light-emitting device; preferably, the side surface of the first auxiliary overlapping part facing away from the first light-emitting device is connected to the side surface of the second auxiliary overlapping part facing away from the second light-emitting device, and the first auxiliary overlapping part and the second auxiliary overlapping part are respectively located in different layers of the first light-emitting device and the second light-emitting device; preferably, the auxiliary overlapping part extends along a second direction perpendicular to the first direction; preferably, the shape of the orthographic projection of the auxiliary overlapping part on the substrate includes a rectangle; preferably, the light-emitting colors of the first light-emitting device and the second light-emitting device are the same or different.

[0012] In combination with the first aspect, in some possible implementation manners, the at least one light-emitting device further includes a first light-emitting device, a second light-emitting device, a fourth light-emitting device, and a fifth light-emitting device. The first light-emitting device and the second light-emitting device, and the fourth light-emitting device and the fifth light-emitting device are arranged along a first direction. The fourth light-emitting device and the first light-emitting device, and the fifth light-emitting device and the second light-emitting device are respectively arranged along a second direction perpendicular to the first direction. The at least one auxiliary overlapping portion includes a first auxiliary overlapping portion, a second auxiliary overlapping portion, a fourth auxiliary overlapping portion, and a fifth auxiliary overlapping portion. The orthographic projection of the first auxiliary overlapping portion on the substrate partially overlaps with the orthographic projection of the first light-emitting device on the substrate. The orthographic projection of the second auxiliary overlapping portion on the substrate partially overlaps with the orthographic projection of the second light-emitting device on the substrate. The orthographic projection of the fourth auxiliary overlapping portion on the substrate partially overlaps with the orthographic projection of the fourth light-emitting device on the substrate. The orthographic projection of the fifth auxiliary overlapping portion on the substrate partially overlaps with the orthographic projection of the fifth light-emitting device on the substrate. The first auxiliary overlapping portion and the fourth auxiliary overlapping portion are respectively located on the same side of the first light-emitting device and the fourth light-emitting device. In the second direction, the first auxiliary overlapping portion is connected to the fourth auxiliary overlapping portion. The second auxiliary overlapping portion and the fifth auxiliary overlapping portion are respectively located on the same side of the second light-emitting device and the fifth light-emitting device. In the second direction, the second auxiliary overlapping portion is connected to the fifth auxiliary overlapping portion. Preferably, the first auxiliary overlapping portion and the fourth auxiliary overlapping portion are disconnected, and the second auxiliary overlapping portion and the fifth auxiliary overlapping portion are disconnected.

[0013] In combination with the first aspect, in some possible implementation manners, the at least one light-emitting device includes a first light-emitting device and a fourth light-emitting device arranged along a second direction, and the second direction is perpendicular to a first direction pointing from a first side to a second side. The light-emitting device further includes a second electrode located on a side of the first electrode close to the substrate. The fourth light-emitting device and the first light-emitting device share the second electrode. Preferably, the first light-emitting device and the fourth light-emitting device have the same light-emitting color.

[0014] In combination with the first aspect, in some possible implementation manners, the light-emitting device further includes a first light-emitting unit and a second electrode. The first light-emitting unit is located on a side of the first electrode close to the substrate and is located within an isolation opening. The second electrode is located on a side of the first light-emitting unit close to the substrate, and at least a part of the second electrode is located within the isolation opening. Preferably, the first light-emitting unit includes a light-emitting layer. Preferably, the light-emitting device further includes a second light-emitting unit and a charge generation layer, and the first light-emitting unit, the charge generation layer, and the second light-emitting unit are stacked in sequence.

[0015] In combination with the first aspect, in some possible implementation manners, the display panel further includes a pixel definition layer, and the pixel definition layer is located between the auxiliary isolation structure and the substrate; within the isolation opening, the edge of the pixel definition layer protrudes inward toward the edge of the auxiliary overlapping portion within the isolation opening; preferably, the pixel definition layer encloses a pixel opening, and the pixel opening communicates with the isolation opening; preferably, the material of the pixel definition layer includes an inorganic material; preferably, the included angle between the side wall of the pixel definition layer enclosing the pixel opening and the substrate is 30 degrees - 45 degrees; preferably, the display panel further includes a planarization layer, and the planarization layer is located between the substrate and the first electrode; the planarization layer includes a groove, and the first electrode is located within the groove; preferably, the surface of the first electrode facing away from the substrate is flush with the surface of the planarization layer facing away from the substrate; preferably, the display panel further includes at least one encapsulation portion, the encapsulation portion includes a main body portion and a suspended portion, the suspended portion surrounds the main body portion, the main body portion covers the isolation opening, and the suspended portion is located on the side of the isolation structure facing away from the substrate; preferably, the display panel further includes an organic encapsulation layer and an inorganic encapsulation layer stacked in sequence on the side of the encapsulation portion and the isolation structure facing away from the substrate.

[0016] The second aspect of the present application provides a method for manufacturing a display panel, including: preparing an auxiliary overlapping structure on a substrate, the substrate including at least one second electrode, the auxiliary overlapping structure including at least one auxiliary overlapping portion, the orthographic projection of the auxiliary overlapping portion on the substrate being located on one side of the orthographic projection of the second electrode on the substrate and covering a partial area of the orthographic projection of the second electrode; preparing an isolation material layer on the side of the auxiliary overlapping structure facing away from the substrate; performing at least one patterning process on the isolation material layer to obtain a plurality of isolation openings, the isolation openings including a first side and a second side disposed opposite to each other; the auxiliary overlapping portion is located on the second side, and the edge of the auxiliary overlapping portion close to the isolation opening is exposed in the isolation opening; and after each patterning process, at least one light-emitting unit and a first electrode are sequentially prepared in a partial isolation opening, and the stacked second electrode, at least one light-emitting unit, and the first electrode form a light-emitting device.

[0017] In combination with the second aspect, in some possible implementation manners, preparing the auxiliary overlapping structure on the substrate includes: electroplating an auxiliary overlapping material layer on the substrate; performing a patterning process on the auxiliary overlapping material layer to obtain the auxiliary overlapping structure.

[0018] Combined with the second aspect, in some possible implementation manners, the isolation material layer is subjected to at least one patterning process to obtain a plurality of isolation openings. After each patterning process, at least one light-emitting unit and a first electrode are sequentially fabricated in some of the isolation openings, including: performing a first patterning process on the isolation material layer to obtain a first isolation opening; fabricating at least one first light-emitting unit and a first electrode of a first light-emitting device in the first isolation opening at one time, and the stacked second electrode, at least one first light-emitting unit and the first electrode of the first light-emitting device form a first light-emitting device; performing a second patterning process on the isolation material layer to obtain a second isolation opening; fabricating at least one second light-emitting unit and a first electrode of a second light-emitting device in the second isolation opening at one time, and the stacked second electrode, at least one second light-emitting unit and the first electrode of the second light-emitting device form a second light-emitting device; performing a third patterning process on the isolation material layer to obtain a third isolation opening; fabricating at least one third light-emitting unit and a first electrode of a third light-emitting device in the third isolation opening at one time, and the stacked second electrode, at least one third light-emitting unit and the first electrode of the third light-emitting device form a third light-emitting device; or, performing a first patterning process on the isolation material layer to obtain a first isolation opening and a second isolation opening; fabricating at least one first light-emitting unit and a first electrode of a first light-emitting device in the first isolation opening at one time, and the stacked second electrode, at least one first light-emitting unit and the first electrode of the first light-emitting device form a first light-emitting device; fabricating at least one second light-emitting unit and a first electrode of a second light-emitting device in the second isolation opening at one time, and the stacked second electrode, at least one second light-emitting unit and the first electrode of the second light-emitting device form a second light-emitting device; performing a second patterning process on the isolation material layer to obtain a third isolation opening; fabricating at least one third light-emitting unit and a first electrode of a third light-emitting device in the third isolation opening at one time, and the stacked second electrode, at least one third light-emitting unit and the first electrode of the third light-emitting device form a third light-emitting device; or, performing a first patterning process on the isolation material layer to obtain a first isolation opening, a second isolation opening and a third isolation opening; fabricating at least one first light-emitting unit and a first electrode of a first light-emitting device in the first isolation opening at one time, and the stacked second electrode, at least one first light-emitting unit and the first electrode of the first light-emitting device form a first light-emitting device; fabricating at least one second light-emitting unit and a first electrode of a second light-emitting device in the second isolation opening at one time, and the stacked second electrode, at least one second light-emitting unit and the first electrode of the second light-emitting device form a second light-emitting device; fabricating at least one third light-emitting unit and a first electrode of a third light-emitting device in the third isolation opening at one time, and the stacked second electrode, at least one third light-emitting unit and the first electrode of the third light-emitting device form a third light-emitting device.

[0019] The third aspect of the present application provides a display device, including the display panel provided in any one of the above embodiments and the display panel prepared by using the preparation method provided in any one of the above embodiments.

[0020] According to the display panel and the display device provided by the embodiments of the present application, by adding an auxiliary overlapping structure, the auxiliary overlapping structure includes an auxiliary overlapping portion, and the auxiliary overlapping portion is used as a bridge between the isolation structure and the first electrode, so that the first electrode overlaps with the auxiliary overlapping portion and the isolation structure, which is equivalent to increasing the overlapping length, reducing the risk of poor overlap between the first electrode and the isolation structure, avoiding the generation of dark spots or black patches, and improving the yield of the display panel. Description of the Drawings

[0021] Figure 1 It is a partial top view structural schematic diagram of the display panel provided by the first embodiment of the present application.

[0022] Figure 2 is Figure 1 a cross-sectional structural schematic diagram of the shown display panel.

[0023] Figure 3 It is a cross-sectional structural schematic diagram of the display panel provided by the second embodiment of the present application.

[0024] Figure 4 is Figure 3 a first partial enlarged view of the shown display panel.

[0025] Figure 5 is Figure 3 a second partial enlarged view of the shown display panel.

[0026] Figure 6a It is a partial top view of the display panel provided by the third embodiment of the present application.

[0027] Figure 6b It is another partial top view of the display panel provided by the third embodiment of the present application.

[0028] Figure 6c It is yet another partial top view of the display panel provided by the third embodiment of the present application.

[0029] Figure 7 It is a cross-sectional structural schematic diagram of the display panel provided by an embodiment.

[0030] Figure 8 For another embodiment provided Figure 6a a cross-sectional structural schematic diagram of the shown display panel.

[0031] Figure 9 It is a cross-sectional structural schematic diagram of the display panel provided by the fourth embodiment of the present application.

[0032] Figure 10 It is a flowchart of the manufacturing method of the display panel provided by an embodiment of the present application.

[0033] Figure 11a , Figure 11b and Figure 11c are schematic structural diagrams of intermediate products obtained by performing the preparation method shown in Figure 10 for the first embodiment.

[0034] Figure 12a , Figure 12b , Figure 12c and Figure 12d are schematic structural diagrams of intermediate products obtained by performing the preparation method shown in Figure 10 for the second embodiment.

[0035] Figure 13a , Figure 13b , Figure 13c and Figure 13d are schematic structural diagrams of intermediate products obtained by performing the preparation method shown in Figure 10 for the third embodiment.

[0036] Figure 14a and Figure 14b are schematic structural diagrams of intermediate products obtained by performing the preparation method shown in Figure 10 for the fourth embodiment.

[0037] Figure 15 is a schematic structural diagram of a display device provided by an embodiment of the present application. Detailed Description

[0038] In the related art, an isolation structure is provided in a display panel prepared by a fine metal mask technology. The isolation structure encloses an isolation opening, and at least part of the light-emitting device is located within the isolation opening. The isolation structure includes a conductive portion, and the cathode of the light-emitting device is overlapped with the conductive portion to form a structure similar to a full-surface cathode structure. However, when the length of the conductive portion extending horizontally into the isolation opening is too short, on the one hand, the internal film layers of the light-emitting device, such as the light-emitting layer, overlapping with the conductive portion will cause lateral leakage current; on the other hand, the overlapping of the film layers on both sides of the light-emitting layer will cause longitudinal leakage current. The longitudinal leakage current will result in a small current, insufficient brightness in low gray levels, and affect the color shift of white color dots, causing color deviation.

[0039] By adjusting the process parameters of the isolation structure to increase the length of the conductive portion extending into the isolation opening, the leakage current problem can be improved, but at the same time, it will cause poor overlap between the cathode and the isolation structure, resulting in a high contact impedance and causing defects such as dark spots or black spots. Further, the contact impedance between the cathode and the isolation structure can be reduced by increasing the cathode thickness, but it will also cause serious color shift in a large viewing angle and an increase in power consumption.

[0040] In view of this, the embodiments of the present application provide a display panel, a manufacturing method thereof, and a display device. By adding an auxiliary overlapping structure, using the auxiliary overlapping structure as a bridge between the isolation structure and the cathode, it is equivalent to increasing the overlapping length, reducing the risk of poor overlapping between the cathode and the isolation structure, and avoiding the occurrence of defective dark spots or black spots. Further, by setting the resistivity of the auxiliary overlapping structure to be less than the resistivity of the isolation structure overlapping with the cathode, it is possible to further avoid high contact impedance, thereby avoiding large viewing angle color shift and increased power consumption.

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0042] In the drawings, for the sake of clarity of illustration, the dimensions of layers and regions may be exaggerated. It can be understood that when a structure is referred to as being "on or under" another structure, the structure can be directly on or under the other structure, or there may also be an intermediate structure. The same reference numerals always denote the same structure. The structures mentioned here include any one of a film layer, an element, a device, a component, and a component.

[0043] When a structure is referred to as being "connected" to another structure, the structure can be directly connected to the other structure, or indirectly connected to the other structure in such a way that one or more intermediate structures are disposed therebetween.

[0044] In this specification, "electrically connected" includes the case where constituent elements are connected together through an element having a certain electrical effect. There is no particular limitation on the "element having a certain electrical effect" as long as it can transfer electrical signals between the constituent elements to be connected. Examples of the "element having a certain electrical effect" include not only electrodes and wirings, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0045] In this specification, the "same-layer setting" adopted means that two (or more) structures are formed through the same patterning process, and their materials may be the same or different.

[0046] Figure 1 It is a partial top view structural schematic diagram of the display panel provided in the first embodiment of the present application. Figure 2 is Figure 1 a cross-sectional structural schematic diagram of the shown display panel. Figure 2 The shown cross-section corresponds to Figure 1 the first cross-section line A1A2 in. Combining Figure 1 andFigure 2 As shown in Figure 2 , the display panel includes a substrate 10, an isolation structure 20, an auxiliary overlapping structure 30, and at least one light-emitting device 40. Among them, the isolation structure 20 is located on one side of the substrate 10. The isolation structure 20 encloses at least one isolation opening H1, and the isolation opening H1 includes a first side S1 and a second side S2 that are oppositely arranged. The auxiliary overlapping structure 30 includes at least one auxiliary overlapping portion 310, and the auxiliary overlapping portion 310 is located between the isolation structure 20 and the substrate 10 and on the second side S2 of the isolation opening H1. At least a part of the auxiliary overlapping portion 310 near the edge of the isolation opening H1 is exposed in the isolation opening H1. At least a part of the light-emitting device 40 is located in the isolation opening H1. The light-emitting device 40 includes a first electrode 41, and on the second side S2, the first electrode 41 overlaps with the auxiliary overlapping portion 310 and the isolation structure 20.

[0047] The substrate 10 can be an array substrate or a substrate substrate. Among them, the array substrate includes a substrate substrate and a pixel circuit array formed on the substrate substrate. In some embodiments, the substrate substrate can be a glass-based substrate. In some embodiments, the substrate substrate can include an organic resin material such as epoxy resin, triazine, silicone resin, or polyimide. In some embodiments, the substrate substrate can include a ceramic material such as silicon nitride, aluminum nitride, or aluminum oxide, or include a metal or a metal compound.

[0048] The isolation opening H1 enclosed by the isolation structure 20 is used to accommodate at least a part of the light-emitting device 40 and form a light-emitting outlet. The isolation structure 20 also has the function of separating the film layers formed thereon. Exemplarily, the side wall of the isolation structure 20 is concave, and the film layer evaporated above the isolation structure will be automatically disconnected at the isolation structure. In this case, the evaporated film layer will be disconnected into multiple evaporated portions that are located in different isolation openings H1 and are independent of each other. When the evaporated portion includes a light-emitting layer, crosstalk between adjacent light-emitting devices 40 can be avoided.

[0049] The light-emitting device 40 can be an Organic Light-Emitting Diode (OLED), a Micro Light-Emitting Diode (Micro LED), a Quantum Dot Light Emitting Diodes (QLED), etc. The color of the light-emitting device can be reasonably selected according to actual needs. Exemplarily, the display panel includes multiple light-emitting devices 40 of different colors, such as a red light-emitting device R, a green pixel G, a blue pixel B, etc.

[0050] The light-emitting device 40 includes a first electrode 41, a light-emitting unit 42, and a second electrode 43 that are sequentially stacked in a direction close to the substrate 10. Exemplarily, the first electrode 41 is a cathode, and the second electrode 43 is an anode. Alternatively, the first electrode 41 is an anode, and the second electrode 43 is a cathode. The light-emitting unit 42 includes a light-emitting layer, and may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL) located between the anode and the light-emitting layer, and at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL) located between the cathode and the light-emitting layer.

[0051] The isolation opening H1 includes a first side S1 and a second side S2 that are oppositely arranged. Exemplarily, when the evaporation source scans, the evaporation source moves from the second side S2 to the first side S1. At the second side S2, the first electrode 41 is overlapped with the auxiliary overlapping portion 310 and the isolation structure 20. The auxiliary overlapping portion 310 is used to provide an auxiliary overlapping function, which is equivalent to a bridge between the first electrode 41 and the isolation structure 20, reducing the overlapping difficulty between the first electrode 41 and the isolation structure 20. Therefore, even if the production process fluctuates, the first electrode 41 and the isolation structure 20 can be successfully overlapped, improving the overlapping success rate between the first electrode 41 and the isolation structure 20, avoiding the formation of dark spots and black spots, and thus improving the yield of the display panel.

[0052] In one embodiment, as Figure 2 shown, the display panel further includes a plurality of first encapsulation portions 51, and the first encapsulation portions 51 are located on a side of the light-emitting device 40 away from the substrate 10. Exemplarily, the first encapsulation portion 51 includes a main body portion 511 and a suspended portion 512. The suspended portion 512 surrounds the main body portion 511. The main body portion 511 covers the isolation opening H1, and the suspended portion 512 is located on a side of the isolation structure 20 away from the substrate 10. That is, the edge of the first encapsulation portion 51 extends to a side of the isolation structure 20 away from the substrate 10, and adjacent first encapsulation portions 51 are disconnected on a side of the isolation structure 20 away from the substrate 10. Exemplarily, the material of the first encapsulation portion 411 includes an inorganic material, such as silicon nitride, silicon dioxide, etc.

[0053] In this case, the display panel may further include an organic encapsulation layer 52 and an inorganic encapsulation layer 53 that are sequentially stacked on a side of the first encapsulation portion 51 and the isolation structure 20 away from the substrate 10. The orthographic projection of the inorganic encapsulation layer 53 on the substrate 10 covers the orthographic projection of the organic encapsulation layer 52 on the substrate 10.

[0054] In one embodiment, as Figure 2As shown, the display panel further includes a pixel definition layer 60, and the pixel definition layer 60 is located between the auxiliary isolation structure 20 and the substrate 10. Inside the isolation opening H1, the edge of the pixel definition layer 60 faces inward and protrudes beyond the edge of the auxiliary overlapping portion 310 within the isolation opening H1. Exemplarily, the material of the pixel definition layer 60 includes inorganic materials.

[0055] In one embodiment, as Figure 2 shown, the pixel definition layer 60 encloses a pixel opening H2, and the pixel opening H2 communicates with the isolation opening H1.

[0056] In one embodiment, as Figure 2 shown, the included angle α between the side wall of the pixel opening H2 enclosed by the pixel definition layer 60 and the substrate 10 is 30 degrees - 45 degrees. Exemplarily, the included angle α is 30 degrees, 35 degrees, 40 degrees, 45 degrees, etc. Thus, it can facilitate the first electrode 41 to smoothly climb to the side of the pixel definition layer 60 away from the substrate 10.

[0057] In one embodiment, as Figure 2 shown, the display panel further includes a planarization layer 70, and the planarization layer 70 is located between the substrate 10 and the first electrode 41; the planarization layer 70 includes a groove G, and the first electrode 41 is located within the groove G. Exemplarily, the surface of the first electrode 41 facing away from the substrate 10 is flush with the surface of the planarization layer 70 facing away from the substrate 10. Thus, the flatness of the pixel definition layer 60 and the isolation structure 20 can be improved, and the structural stability can be enhanced.

[0058] In one embodiment, as Figure 2 shown, the isolation structure 20 covers one side edge of the auxiliary overlapping structure 30 facing away from the isolation opening H1. The isolation structure 20 includes a stacked first part 21 and a second part 22. The first part 21 is disposed on the side of the auxiliary overlapping portion 310 facing away from the substrate 10, and the second part 22 is located on the side of the first part 21 facing away from the substrate 10. Inside the isolation opening, the edge of the second part 22 faces inward and protrudes beyond the edge of the first part. In this case, in the direction perpendicular to the display panel, the cross-sectional shape of the isolation structure 20 can be a T shape. Exemplarily, the material of the first part 21 includes at least one of molybdenum and aluminum, and the material of the second part 22 can be titanium.

[0059] In one embodiment, as Figure 2 shown, the side of the auxiliary overlapping portion 310 close to the isolation opening H1 protrudes from the first part 21, and the orthographic projection of the auxiliary overlapping portion 310 on the substrate 10 is within the orthographic projection range of the second part 22 on the substrate 10.

[0060] In one embodiment, as Figure 2As shown, the resistivity of the auxiliary overlap portion 310 is less than the resistivity of the first portion 21. In one embodiment, the material of the auxiliary overlap portion includes a metal material. Exemplarily, the material of the auxiliary overlap portion includes copper. The auxiliary overlap portion 310 is prepared using a material with a resistivity less than that of the first portion 21, which can avoid high contact impedance, thereby avoiding color deviation and increased power consumption.

[0061] In one embodiment, Figure 2 As shown, there is a gap between two edge lines of the first portion 21 that are arranged opposite to each other in the direction from the first side S1 to the second side S2. The orthographic projection of the edge of the auxiliary overlapping portion 310 away from the isolation opening H1 on the substrate 10 is located within the range of 1 / 3-2 / 3 of the gap, that is, the orthographic projection of the edge of the auxiliary overlapping portion 310 away from the isolation opening H1 on the substrate 10 is located in the central area of ​​the orthographic projection of the first portion 21 on the substrate 10. In this way, the risk of structural instability caused by the height difference formed by the thickness of the auxiliary overlapping portion 310 can be reduced, and the yield of the display panel can be further improved.

[0062] Figure 3 FIG. 1 is a schematic diagram of a cross-sectional structure of a display panel provided in the second embodiment of the present application. Figure 3 The display panel and Figure 2 The difference between the display panel shown is that, in this embodiment, the isolation structure 20 further includes a third portion 23, and the third portion 23 is located on the side of the first portion 21 close to the substrate 10. The orthographic projection of the first portion 21 on the substrate 10 is located within the orthographic projection range of the third portion 23 on the substrate 10, and the orthographic projection of the third portion 23 on the substrate 10 is located within the orthographic projection range of the second portion 22 on the substrate 10. In this case, in the direction perpendicular to the display panel, the cross-sectional shape of the isolation structure 20 can be an I-shaped.

[0063] In one embodiment, Figure 3 As shown, the edge of the third portion 23 protrudes from the edge of the first portion 21 toward the isolation opening H1 . On the second side S2 , part of the first electrode 41 covers the side of the auxiliary overlapping portion 310 away from the substrate 10 and extends onto the isolation structure 20 .

[0064] In one embodiment, Figure 3 As shown, on the second side S2, the first electrode 41 covers a side of the third portion 23 close to the isolation opening H1 and a side away from the substrate 10. Along the first direction x from the first side S1 to the second side S2, the total overlap length L1 of the first electrode 41, the auxiliary overlap portion 310 and the first portion 21 is 0.7-1 micron. Exemplarily, the total overlap length L1 is 0.7 micron, 0.8 micron, 0.9 micron, etc. The advantage is that it can be compatible with the size parameters of the isolation structure 20 in the conventional display panel and can ensure a good overlap effect.

[0065] In one embodiment, as Figure 3 shown, on the second side S2, the first electrode 41 is spaced apart from the first portion 21.

[0066] In one embodiment, as Figure 3 shown, in the thickness direction of the display panel, the thickness of the auxiliary overlapping portion 310 is less than or equal to the thickness of the third portion 23, and the thickness of the auxiliary overlapping portion 310 is 500 - 1000 angstroms. Exemplarily, for ease of explanation, the thickness of the auxiliary overlapping portion 310 is denoted as the first thickness L2, and the first thickness L2 is any one of 600 angstroms, 700 angstroms, 800 angstroms, and 900 angstroms. The advantage is that it ensures the successful overlapping of the auxiliary overlapping portion 310 and the first portion 21, and there will be no occurrence of dark spots and black patches with high impedance. At the same time, it will not cause color deviation in large viewing angles and will not increase power consumption.

[0067] In one embodiment, as Figure 3 shown, the display panel further includes a pixel definition layer 60, and the pixel definition layer 60 is located between the substrate 10 and the isolation structure 20. On the first side S1, a part of the first electrode 41 is located on the side of the pixel definition layer 60 away from the substrate 10. That is, on the first side S1, after the first electrode 41 climbs along the side wall of the pixel definition layer 60, it terminates on the side of the pixel definition layer 60 away from the substrate 10.

[0068] In one embodiment, as Figure 3 shown, on the second side S2, the thickness of the first electrode 41 on the side of the pixel definition layer 60 away from the substrate 10 is 125 - 145 angstroms. For ease of explanation, the thickness of the first electrode 41 on the side of the pixel definition layer 60 away from the substrate 10 on the second side S2 is denoted as the second thickness L3. Exemplarily, the second thickness L3 is 125 angstroms, 130 angstroms, 145 angstroms, etc. The advantage of this is that on the second side S2, since the film formation thickness L3 of the first electrode 41 is relatively thick, it will not cause color deviation in large viewing angles and increase in power consumption.

[0069] In one embodiment, as Figure 3 shown, on the first side S1, the thickness of the first electrode 41 within the orthographic projection range of the second portion 22 on the substrate 10 is 25 - 45 angstroms. For ease of explanation, the thickness of the first electrode 41 within the orthographic projection range of the second portion 22 on the substrate 10 on the first side S1 is denoted as the third thickness L4. Exemplarily, the third thickness L4 is 25 angstroms, 30 angstroms, 45 angstroms, etc. The advantage of this is that on the first side S1, since the film formation thickness L4 of the first electrode 41 is relatively thin, even if the first electrode 41 and the first portion 21 overlap, it will lead to poor overlapping, avoiding the leakage current of the light-emitting device 40 to the isolation structure 20.

[0070] According to the actual product process, the following provides two embodiments of parameter settings. Figure 4 ForFigure 3 The first partial enlarged view of the display panel shown. Figure 5 is Figure 3 The second partial enlarged view of the display panel shown.

[0071] In one embodiment, in combination with Figure 4 and Figure 5 shown, the distance between the edge of the third part 23 close to the isolation opening H1 and the edge of the second part 22 close to the isolation opening H1 is 0.2 - 0.7 microns. For the convenience of description, the distance between the edge of the third part 23 close to the isolation opening H1 and the edge of the second part 22 close to the isolation opening H1 is denoted as the first distance L5. Exemplarily, the first distance L5 is 0.2 microns, 0.5 microns, 0.7 microns, etc.

[0072] In this case, referring to Figure 5 , on the second side S2, the distance between the edge of the third part 23 close to the isolation opening H1 and the edge of the auxiliary overlapping part 310 close to the isolation opening H1 is 0.3 - 0.6 microns. For the convenience of description, the distance between the edge of the third part 23 close to the isolation opening H1 and the edge of the auxiliary overlapping part 310 close to the isolation opening H1 on the second side S2 is denoted as the second distance. Exemplarily, the second distance L6 is 0.3 microns, 0.4 microns, 0.5 microns or 0.6 microns, etc.

[0073] In one embodiment, on the first side S1, the first electrode 41 and the isolation structure 20 are spaced apart.

[0074] Referring to Figure 5 , in the first direction x pointing from the first side S1 to the second side S2, the overlapping length L7 between the first electrode 41 and the auxiliary overlapping part 310 is greater than 0.4 microns. Exemplarily, the overlapping length L7 is 0.41 microns, 0.42 microns, etc. It should be noted that the overlapping length L7 and the distance L6 can be equal. Or, the overlapping length L7 is less than the second distance L6, which may be due to the step structure formed on the surface of the auxiliary overlapping part 310 away from the substrate 10 and the side wall of the first part 21 close to the isolation opening H1. Due to the shielding of the side wall of the first part 21, the first electrode 41 cannot form a good overlap with the auxiliary overlapping part 310.

[0075] In another embodiment, in combination with Figure 4 and Figure 5 shown, the first distance L5 between the edge of the first part 21 close to the isolation opening H1 and the edge of the second part 22 close to the isolation opening H1 is 0.7 - 1.4 microns. Exemplarily, the first distance L5 is 0.7 microns, 1.0 microns, 1.4 microns, etc.

[0076] In this case, referring to Figure 5, on the first side S1, the first electrode 41 covers a side surface of a part of the third portion 23 facing away from the substrate 10.

[0077] On the second side S2, the second distance L6 between the edge of the third portion 23 close to the isolation opening H1 and the edge of the auxiliary overlapping portion 310 close to the isolation opening H1 is 0.1 - 0.4 micrometers. Exemplarily, the second distance L6 is 0.1 micrometer, 0.2 micrometers, 0.4 micrometers, etc.

[0078] Figure 6a A partial top view of a display panel provided by the third embodiment of the present application. Figure 6b Another partial top view of a display panel provided by the third embodiment of the present application. Figure 6c Yet another partial top view of a display panel provided by the third embodiment of the present application. Figure 7 A schematic cross-sectional structure diagram of a display panel provided by an embodiment. Figure 7 The cross-sectional structure shown can correspond to Figures 6a - 6c the top view shown in any of the Figure 6a figures. Taking the Figure 7 top view shown as an example, Figure 6a it corresponds to the second cross-sectional line A3A4 in the

[0079] Combined with Figure 6a , Figure 6b , Figure 6c and Figure 7 shown, at least one light-emitting device 40 includes a first light-emitting device 410 and a second light-emitting device 420 arranged adjacent to each other, and the first light-emitting device 410 and the second light-emitting device 420 are arranged in a first direction x pointing from the first side S1 to the second side S2. At least one auxiliary overlapping portion 310 includes a first auxiliary overlapping portion 311 and a second auxiliary overlapping portion 312. The first auxiliary overlapping portion 311 is located on the side of the first light-emitting device 410 close to the substrate 10, and the orthographic projection of the first auxiliary overlapping portion 311 on the substrate 10 overlaps with a part of the orthographic projection of the first light-emitting device 410 on the substrate 10. The second auxiliary overlapping portion 312 is located on the side of the second light-emitting device 420 close to the substrate 10, and the orthographic projection of the second auxiliary overlapping portion 312 on the substrate 10 overlaps with a part of the orthographic projection of the second light-emitting device 420 on the substrate 10.

[0080] Referring to Figure 6a , in one embodiment, the first auxiliary overlapping portion 311 and the second auxiliary overlapping portion 312 are arranged at intervals along the first direction x, and the first auxiliary overlapping portion 311 and the second auxiliary overlapping portion 312 are respectively located on the same side of the first light-emitting device 410 and the second light-emitting device 420. Exemplarily, the first auxiliary overlapping portion 311 is located on the second side S2 of the first light-emitting device 410, and the second auxiliary overlapping portion 312 is located on the second side S2 of the second light-emitting device 420.

[0081] In Figure 6a the display panel shown, the auxiliary overlapping portion 310 extends along a second direction y perpendicular to the first direction x.

[0082] In Figure 6a the display panel shown, the shape of the orthographic projection of the auxiliary overlapping portion 310 on the substrate 10 includes a rectangle.

[0083] In Figure 6a the display panel shown, the light emitting colors of the first light emitting device 410 and the second light emitting device 420 are the same or different. Exemplarily, the first light emitting device 410 includes a blue light emitting device B, the second light emitting device 420 includes a green light emitting device G, and the third light emitting device 430 includes a red light emitting device R.

[0084] In Figure 6a the display panel shown, at least one light emitting device 40 further includes a fourth light emitting device 440 and a fifth light emitting device 450. The fourth light emitting device 440 and the fifth light emitting device 450 are arranged along the first direction x. The fourth light emitting device 440 and the first light emitting device 410, and the fifth light emitting device 450 and the second light emitting device 420 are respectively arranged along a second direction y perpendicular to the first direction x. Exemplarily, the fourth light emitting device 440 and the first light emitting device 410 have the same color, and the fifth light emitting device 450 and the second light emitting device 420 have the same color. At least one auxiliary overlapping portion 310 further includes a fourth auxiliary overlapping portion 314 and a fifth auxiliary overlapping portion 315. The orthographic projection of the fourth auxiliary overlapping portion 314 on the substrate 10 overlaps with a part of the orthographic projection of the fourth light emitting device 440 on the substrate 10. The orthographic projection of the fifth auxiliary overlapping portion 315 on the substrate 10 overlaps with a part of the orthographic projection of the fifth light emitting device 450 on the substrate 10.

[0085] In Figure 6a the display panel shown, the first auxiliary overlapping portion 311 and the fourth auxiliary overlapping portion 314 are disconnected, and the second auxiliary overlapping portion 312 and the fifth auxiliary overlapping portion 315 are disconnected.

[0086] In Figure 6aIn the shown display panel, at least one light-emitting device 40 further includes a third light-emitting device 430 and a sixth light-emitting device 460. The third light-emitting device 430 is located on a side of the second light-emitting device 420 away from the first light-emitting device 410, and the sixth light-emitting device 460 is located on a side of the fifth light-emitting device 450 away from the fourth light-emitting device 440. At least one auxiliary overlapping portion 310 further includes a third auxiliary overlapping portion 313 and a sixth auxiliary overlapping portion 316. A positive projection of the third auxiliary overlapping portion 313 on the substrate 10 overlaps with a partial positive projection of the third light-emitting device 430 on the substrate 10. A positive projection of the sixth auxiliary overlapping portion 316 on the substrate 10 overlaps with a partial positive projection of the sixth light-emitting device 460 on the substrate 10. The third auxiliary overlapping portion 313 and the sixth auxiliary overlapping portion 316 are disconnected. Exemplarily, the third light-emitting device 430 has a different light-emitting color from the first light-emitting device 410 and the second light-emitting device 420, and has the same light-emitting color as the sixth light-emitting device 460.

[0087] Figure 6b The difference between the shown display panel and Figure 6a the shown display panel is that in Figure 6b the shown display panel, in a top view of the display panel, a side surface of the first auxiliary overlapping portion 311 facing away from the first light-emitting device 410 is connected to a side surface of the second auxiliary overlapping portion 312 facing away from the second light-emitting device 420. The first auxiliary overlapping portion 311 and the second auxiliary overlapping portion 312 are respectively located on different sides of the first light-emitting device 410 and the second light-emitting device 420. Exemplarily, the first auxiliary overlapping portion 311 is located on the second side S2 of the first light-emitting device 410, and the second auxiliary overlapping portion 312 is located on the first side S1 of the second light-emitting device 420.

[0088] In this embodiment, the first auxiliary overlapping portion 311 and the second auxiliary overlapping portion 312 are connected to each other, which is equivalent to the first light-emitting device 410 and the second light-emitting device 420 sharing the same auxiliary overlapping portion 310, making the design of the auxiliary overlapping portion 310 simpler and easier to implement.

[0089] Figure 6c The difference between the shown display panel and Figure 6a 、 Figure 6b the shown display panel is that in Figure 6c the shown display panel, in the second direction y, the first auxiliary overlapping portion 311 and the fourth auxiliary overlapping portion 314 are connected to each other, and the second auxiliary overlapping portion 312 and the fifth auxiliary overlapping portion 315 are connected to each other. Equivalently, the first light-emitting device 410 and the fourth light-emitting device 440 share the same auxiliary overlapping portion 310, and the second light-emitting device 420 and the fifth light-emitting device 450 share the same auxiliary overlapping portion 310, making the design of the auxiliary overlapping portion 310 simpler and easier to implement.

[0090] The display panel provided according to this embodiment provides a pixel arrangement method, and further provides the layout of the auxiliary overlapping portion 310 under this pixel arrangement method, as well as the positional relationship between the auxiliary overlapping portion 310 and the light-emitting device 40, with a simple structure and easy to implement.

[0091] Figure 8 Provided for another embodiment Figure 6a Schematic cross-sectional structure diagram of the shown display panel. Figure 8 The shown cross-section corresponds to Figure 6a the second cross-section line A3A4 in. As Figure 8 the shown display panel and Figure 7 the difference between the shown display panel is that in this embodiment, the fourth light-emitting device 440 and the first light-emitting device 410 share the second electrode 43, and the fifth light-emitting device 450 and the second light-emitting device 420 share the second electrode 43.

[0092] In one embodiment, the first light-emitting device 410 and the fourth light-emitting device 440 have the same emission color.

[0093] According to the display panel provided by this embodiment, by setting two adjacent light-emitting devices 40 in the second direction y to share the second electrode 43, even if the overlapping effect of one of the light-emitting devices 40 is poor, it does not affect the normal light emission of the other light-emitting device 40, improving the reliability of the display panel.

[0094] Figure 9 Schematic cross-sectional structure diagram of the display panel provided by the fourth embodiment of the present application. As Figure 9 the difference between the shown display panel and the display panel provided by any of the above embodiments is that in this embodiment, the light-emitting device 40 is a stacked light-emitting device.

[0095] Specifically, the light-emitting device 40 includes a first light-emitting unit 421, a second light-emitting unit 422, and a charge generation layer 44. The charge generation layer 44 is located between the first light-emitting unit 421 and the second light-emitting unit 422. The charge generation layer 44 is used to generate electrons and holes. After the electrons and holes are separated, the electrons are transmitted and injected into the first light-emitting unit 421, and the holes are transmitted and injected into the second light-emitting unit 422. Then, at the first light-emitting unit 421, they recombine with the holes generated by the second electrode 43 to emit light. At the second light-emitting unit 422, they recombine with the electrons generated by the first electrode 41 to emit light. The colors of the light-emitting layers in the first light-emitting unit 421 and the second light-emitting unit 422 are the same or different.

[0096] The present application also provides a method for manufacturing a display panel. Figure 10 Flowchart of the method for manufacturing a display panel provided by an embodiment of the present application. Figures 11a - 11c For the first embodiment to execute Figure 10Schematic diagram of the structure of the intermediate product obtained by the preparation method shown. In combination with Figure 10 、 Figures 11a - 11c As shown, the preparation method 1000 of the display panel includes: Step S1100, referring to Figure 11a , an auxiliary overlapping structure 30 is prepared on the substrate 10.

[0097] The substrate 10 includes at least one second electrode 43, and the auxiliary overlapping structure 30 includes at least one auxiliary overlapping portion 310. The orthographic projection of the auxiliary overlapping portion 310 on the substrate 10 is located on one side of the orthographic projection of the second electrode 43 on the substrate 10 and covers a partial area of the orthographic projection of the second electrode 43.

[0098] Specifically, an auxiliary overlapping material layer is electroplated on the substrate 10; the auxiliary overlapping material layer is patterned to obtain the auxiliary overlapping structure 30. Exemplarily, the auxiliary overlapping material layer is etched with hydrogen peroxide to obtain the auxiliary overlapping structure 30.

[0099] In one embodiment, before step S1100, it further includes: preparing a pixel defining material layer 600 on the substrate 10, and the pixel defining material layer 600 covers the second electrode 43.

[0100] Step S1200, referring to Figure 11b , an isolation material layer 200 is prepared on the side of the auxiliary overlapping structure 30 away from the substrate 10.

[0101] Step S1300, referring to Figure 11c , the isolation material layer 200 is patterned at least once to obtain a plurality of isolation openings H1. The isolation opening H1 includes a first side S1 and a second side S2 which are oppositely arranged; the auxiliary overlapping portion 310 is located on the second side S2, and the edge of the auxiliary overlapping portion 310 close to the isolation opening H1 is exposed in the isolation opening H1.

[0102] In one embodiment, after step S1300, the preparation method 1000 further includes a step of patterning the pixel defining material layer 600 to obtain a plurality of pixel openings H2, and the pixel openings H2 communicate with the isolation openings H1.

[0103] Step S1400, continue to refer to Figure 11c , after each patterning process, at least one light-emitting unit 42 and a first electrode 41 are sequentially prepared in part of the isolation openings H1, and the stacked second electrode 43, at least one light-emitting unit 42 and the first electrode 41 form a light-emitting device 40.

[0104] Three implementation manners of step S1300 and step S1400 are provided below.

[0105] In one embodiment,Figures 12a - 12d Execution provided for the second embodiment Figure 10 Schematic diagram of the structure of the intermediate product obtained by the preparation method shown

[0106] First, on the basis of the intermediate product shown Figure 11b the isolation material layer 200 is subjected to a first patterning process to obtain a first isolation opening H11. The pixel definition material layer 600 is subjected to a first patterning process to obtain a first pixel opening H21, as shown Figure 12a in the figure

[0107] Secondly, as shown Figure 12b at least one first light-emitting unit 421 and a first electrode 411 of the first light-emitting device are sequentially prepared in the first isolation opening H11. The stacked second electrode 43, at least one first light-emitting unit 421 and the first electrode 411 of the first light-emitting device form a first light-emitting device 410

[0108] Then, as shown Figure 12c the isolation material layer 200 is subjected to a second patterning process to obtain a second isolation opening H12. The pixel definition material layer 600 is subjected to a second patterning process to obtain a second pixel opening H22

[0109] Thirdly, continuing to refer to Figure 12c at least one second light-emitting unit 422 and a first electrode 412 of the second light-emitting device are sequentially prepared in the second isolation opening H12. The stacked second electrode 43, at least one second light-emitting unit 422 and the first electrode 412 of the second light-emitting device form a second light-emitting device 420

[0110] Next, referring to Figure 12d the isolation material layer 200 is subjected to a third patterning process to obtain a third isolation opening H13. The pixel definition layer 300 is subjected to a third patterning process to obtain a third pixel opening H23

[0111] Finally, continuing to refer to Figure 12d at least one third light-emitting unit 423 and a first electrode 413 of the third light-emitting device are prepared at one time in the third isolation opening H13. The stacked second electrode 43, at least one third light-emitting unit 423 and the first electrode 413 of the third light-emitting device form a third light-emitting device 430

[0112] In another embodiment Figures 13a - 13d Execution provided for the third embodiment Figure 10 Schematic diagram of the structure of the intermediate product obtained by the preparation method shown

[0113] First, referring to Figure 13a, the isolation material layer 200 is subjected to a first patterning process to obtain a first isolation opening H11 and a second isolation opening H12. The pixel definition material layer 600 is subjected to a first patterning process to obtain a first pixel opening H21 and a second pixel opening H22.

[0114] Secondly, referring to Figure 13b , at least one first light-emitting unit 421 and a first electrode 411 of the first light-emitting device are sequentially prepared in the first isolation opening H11. The stacked second electrode 43, at least one first light-emitting unit 421, and the first electrode 411 of the first light-emitting device constitute the first light-emitting device 410.

[0115] Next, continue to refer to Figure 13b , at least one second light-emitting unit 422 and a first electrode 412 of the second light-emitting device are prepared at one time in the second isolation opening H12. The stacked second electrode 43, at least one second light-emitting unit 422, and the first electrode 412 of the second light-emitting device constitute the second light-emitting device 420.

[0116] Again, referring to Figure 13c , the isolation material layer 200 is subjected to a second patterning process to obtain a third isolation opening H13. The pixel definition material layer 600 is subjected to a second patterning process to obtain a third pixel opening H23.

[0117] Then, referring to Figure 13d , at least one third light-emitting unit 423 and a first electrode 413 of the third light-emitting device are prepared at one time in the third isolation opening H13. The stacked second electrode 43, at least one third light-emitting unit 423, and the first electrode 413 of the third light-emitting device constitute the third light-emitting device 430.

[0118] In yet another embodiment, Figure 14a and Figure 14b is a schematic structural diagram of an intermediate product obtained by the manufacturing method provided for the fourth embodiment and Figure 10 shown.

[0119] First, referring to Figure 14a , the isolation material layer 200 is subjected to a first patterning process to obtain a first isolation opening H11, a second isolation opening H12, and a third isolation opening H13. The pixel definition material layer 600 is subjected to a first patterning process to obtain a first pixel opening H21, a second pixel opening H22, and a third pixel opening H23.

[0120] Secondly, referring to Figure 14b, at least one first light-emitting unit 421 and a first electrode 411 of the first light-emitting device are sequentially prepared in the first isolation opening H11. The stacked second electrode 43, at least one first light-emitting unit 421, and the first electrode 411 of the first light-emitting device form the first light-emitting device 410.

[0121] Next, continue to refer to Figure 14b , at least one second light-emitting unit 422 and a first electrode 412 of the second light-emitting device are sequentially prepared in the second isolation opening H12. The stacked second electrode 43, at least one second light-emitting unit 422, and the first electrode 412 of the second light-emitting device form the second light-emitting device 420.

[0122] Again, continue to refer to Figure 14b , at least one third light-emitting unit 423 and a first electrode 413 of the third light-emitting device are sequentially prepared in the third isolation opening H13. The stacked second electrode 43, at least one third light-emitting unit 423, and the first electrode 413 of the third light-emitting device form the third light-emitting device 430.

[0123] This application also provides a display device. Figure 15 It is a schematic structural diagram of the display device provided by an embodiment of this application. As Figure 15 shown, the display device 1500 includes the display panel provided by any of the above embodiments or the display panel obtained by the manufacturing method provided by any of the above embodiments.

[0124] The display device 1500 is a product with an image display function. For example, the display device 1500 can be used to display static images, such as pictures or photos. The display device 1500 can also be used to display dynamic images, such as videos.

[0125] The display device 1500 can be a notebook computer, a mobile phone, a handheld or portable computer, a camera, a video camera, an in-vehicle intelligent central control screen, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic billboard or sign, a projector, etc.

[0126] In addition, the display device 1500 can also have functions such as taking pictures, recording videos, fingerprint recognition, and face recognition. Correspondingly, the display device 1500 further includes at least one functional module for implementing the above functions, such as an under-screen camera, an under-screen fingerprint recognition sensor, etc.

[0127] The basic principles of the present application have been described above in connection with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present application. Additionally, the specific details disclosed above are only for illustrative and facilitating understanding purposes, rather than limitations, and these details do not limit the present application to necessarily implement using the above specific details.

[0128] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that, Comprising: A substrate; An isolation structure located on one side of the substrate, the isolation structure enclosing at least one isolation opening, the isolation opening including a first side and a second side arranged opposite to each other; An auxiliary overlapping structure including at least one auxiliary overlapping portion, the auxiliary overlapping portion being located between the isolation structure and the substrate and on the second side of the isolation opening, and the auxiliary overlapping portion being exposed to the isolation opening near the edge of the isolation opening; And At least one light-emitting device, at least a part of the light-emitting device being located within the isolation opening, the light-emitting device including a first electrode, on the second side, the first electrode overlapping with the auxiliary overlapping portion and the isolation structure.

2. The display panel according to claim 1, wherein The isolation structure covers a side edge of the auxiliary overlapping structure facing away from the isolation opening, the isolation structure including a stacked first part and a second part, the first part being arranged on a side of the auxiliary overlapping portion facing away from the substrate; the second part is located on a side of the first part facing away from the substrate, and within the isolation opening, an edge of the second part protrudes into the isolation opening from the edge of the first part; A side of the auxiliary overlapping structure close to the isolation opening protrudes from the first part; A positive projection of the auxiliary overlapping structure on the substrate is located within a positive projection range of the second part on the substrate; The isolation structure further includes a third part, the third part being located on a side of the first part close to the substrate, a positive projection of the first part on the substrate is located within a positive projection range of the third part on the substrate, and a positive projection of the third part on the substrate is located within a positive projection range of the second part on the substrate.

3. The display panel according to claim 2, wherein The isolation structure further includes a third part, the third part being located on a side of the first part close to the substrate, a positive projection of the first part on the substrate is located within a positive projection range of the third part on the substrate, and a positive projection of the third part on the substrate is located within a positive projection range of the second part on the substrate; An edge of the third part protrudes into the isolation opening from the edge of the first part, on the second side, a part of the first electrode covers a side of the auxiliary overlapping portion facing away from the substrate and extends onto the isolation structure.

4. The display panel according to claim 3, wherein In a direction from the first side pointing to the second side, a total overlapping length of the first electrode with the auxiliary overlapping portion and the first part is 0.7 - 1 micrometer; On the second side, the first electrode is arranged at an interval from the second part; On the first side, the first electrode is arranged at an interval from the isolation structure.

5. The display panel according to claim 3, wherein The display panel further includes a pixel definition layer located between the substrate and the auxiliary overlapping structure, within the isolation opening, an edge of the pixel definition layer protrudes into the isolation opening from the edge of the first part; On the first side, a part of the first electrode is located on a side of the pixel definition layer facing away from the substrate; On the first side, the first electrode covers a side surface of a part of the third part facing away from the substrate.

6. The display panel according to claim 2, wherein The resistivity of the auxiliary overlapping portion is less than the resistivity of the first part; The material of the auxiliary overlapping portion includes a metal material.

7. The display panel according to claim 1, wherein the at least one light-emitting device includes a first light-emitting device and a second light-emitting device arranged adjacent to each other, and the first light-emitting device and the second light-emitting device are arranged along a first direction; the at least one auxiliary overlapping portion includes a first auxiliary overlapping portion on a side of the first light-emitting device close to the substrate and a second auxiliary overlapping portion on a side of the second light-emitting device close to the substrate; a positive projection of the first auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the first light-emitting device on the substrate; a positive projection of the second auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the second light-emitting device on the substrate; the first auxiliary overlapping portion and the second auxiliary overlapping portion are arranged at intervals along the first direction, and the first auxiliary overlapping portion and the second auxiliary overlapping portion are respectively located on the same side of the first light-emitting device and the second light-emitting device.

8. The display panel according to claim 7, wherein the at least one light-emitting device includes a first light-emitting device and a second light-emitting device arranged adjacent to each other, and the first light-emitting device and the second light-emitting device are arranged along a first direction; the at least one auxiliary overlapping portion includes a first auxiliary overlapping portion on a side of the first light-emitting device close to the substrate and a second auxiliary overlapping portion on a side of the second light-emitting device close to the substrate; a positive projection of the first auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the first light-emitting device on the substrate; a positive projection of the second auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the second light-emitting device on the substrate; a side surface of the first auxiliary overlapping portion facing away from the first light-emitting device is connected to a side surface of the second auxiliary overlapping portion facing away from the second light-emitting device, and the first auxiliary overlapping portion and the second auxiliary overlapping portion are respectively located on different sides of the first light-emitting device and the second light-emitting device.

9. The display panel according to claim 1, wherein the at least one light-emitting device includes a first light-emitting device, a second light-emitting device, a fourth light-emitting device, and a fifth light-emitting device, the first light-emitting device and the second light-emitting device, the fourth light-emitting device and the fifth light-emitting device are arranged along a first direction, and the fourth light-emitting device and the first light-emitting device, the fifth light-emitting device and the second light-emitting device are respectively arranged along a second direction perpendicular to the first direction; the at least one auxiliary overlapping portion includes a first auxiliary overlapping portion, a second auxiliary overlapping portion, a fourth auxiliary overlapping portion, and a fifth auxiliary overlapping portion; a positive projection of the first auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the first light-emitting device on the substrate; a positive projection of the second auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the second light-emitting device on the substrate, a positive projection of the fourth auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the fourth light-emitting device on the substrate, and a positive projection of the fifth auxiliary overlapping portion on the substrate overlaps with a part of a positive projection of the fifth light-emitting device on the substrate; The first auxiliary overlapping portion and the fourth auxiliary overlapping portion are respectively located on the same side of the first light-emitting device and the fourth light-emitting device, and in the second direction, the first auxiliary overlapping portion and the fourth auxiliary overlapping portion are connected to each other; The second auxiliary overlapping portion and the fifth auxiliary overlapping portion are respectively located on the same side of the second light-emitting device and the fifth light-emitting device, and in the second direction, the second auxiliary overlapping portion and the fifth auxiliary overlapping portion are connected to each other.

10. The display panel according to claim 9, wherein The at least one light-emitting device includes a first light-emitting device, a second light-emitting device, a fourth light-emitting device, and a fifth light-emitting device. The first light-emitting device and the second light-emitting device, the fourth light-emitting device and the fifth light-emitting device are arranged along the first direction, and the fourth light-emitting device and the first light-emitting device, the fifth light-emitting device and the second light-emitting device are respectively arranged along a second direction perpendicular to the first direction; The at least one auxiliary overlapping portion includes a first auxiliary overlapping portion, a second auxiliary overlapping portion, a fourth auxiliary overlapping portion, and a fifth auxiliary overlapping portion; The orthographic projection of the first auxiliary overlapping portion on the substrate overlaps with a part of the orthographic projection of the first light-emitting device on the substrate; The orthographic projection of the second auxiliary overlapping portion on the substrate overlaps with a part of the orthographic projection of the second light-emitting device on the substrate, the orthographic projection of the fourth auxiliary overlapping portion on the substrate overlaps with a part of the orthographic projection of the fourth light-emitting device on the substrate, and the orthographic projection of the fifth auxiliary overlapping portion on the substrate overlaps with a part of the orthographic projection of the fifth light-emitting device on the substrate; The first auxiliary overlapping portion and the fourth auxiliary overlapping portion are disconnected, and the second auxiliary overlapping portion and the fifth auxiliary overlapping portion are disconnected.

11. The display panel according to claim 1, characterized in that, The at least one light-emitting device includes a first light-emitting device and a fourth light-emitting device arranged along the second direction, and the second direction is perpendicular to the first direction pointing from the first side to the second side; the light-emitting device further includes a second electrode located on the side of the first electrode close to the substrate; the fourth light-emitting device and the first light-emitting device share the second electrode.

12. The display panel according to claim 1, wherein, The light-emitting device further includes a first light-emitting unit and a second electrode. The first light-emitting unit is located on the side of the first electrode close to the substrate and is located within the isolation opening. The second electrode is located on the side of the first light-emitting unit close to the substrate, and at least a part of the second electrode is located within the isolation opening; The first light-emitting unit includes a light-emitting layer. The light-emitting device further includes a second light-emitting unit and a charge generation layer. The first light-emitting unit, the charge generation layer, and the second light-emitting unit are stacked in sequence.

13. The display panel according to claim 1, characterized in that, It further includes a pixel defining layer located between the auxiliary overlapping portion and the substrate; within the isolation opening, the edge of the pixel defining layer protrudes towards the inside of the isolation opening beyond the edge of the auxiliary overlapping portion; The pixel defining layer encloses a pixel opening, and the pixel opening communicates with the isolation opening; The material of the pixel defining layer includes an inorganic material.

14. The display panel according to claim 13, wherein The included angle between the side wall of the pixel defining layer enclosing the pixel opening and the substrate is 30 degrees - 45 degrees.

15. A display device, characterized in that, Including the display panel according to any one of claims 1-14.

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