Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel has a display area and a non-display area, the non-display area at least partially surrounds the display area, a display panel substrate, a dam, a first encapsulation layer and a conductive layer, the dam is arranged on one side of the substrate and located in the non-display area, the first encapsulation layer is arranged on the side of at least one dam away from the substrate and located in the display area and the non-display area, and the conductive layer is arranged on the side of the first encapsulation layer away from the substrate. The conductive layer includes at least one blocking structure in the non-display area, and the orthographic projection of the at least one blocking structure on the substrate at least partially overlaps the orthographic projection of the at least one dam on the substrate. The display panel provided by the application can increase the blocking height on the basis of the dam by stacking the conductive layer on the first encapsulation layer, the blocking structure in the conductive layer will not be planarized by the first encapsulation layer, can effectively prevent the overflow of the encapsulation material above the first encapsulation layer, and guarantees the encapsulation quality of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) is an active light-emitting device with a sandwich structure composed of multiple organic layers and two electrodes. Currently, display screens based on AMOLED (Active-matrix Organic Light-Emitting Diode) have been commercialized in the fields of smart phones, watches, and notebook computers.

[0003] However, the performance of the existing display screen needs to be improved.

[0004] In some display panels, the use performance is effectively improved by introducing an auxiliary electrode technology. Patent CN118742138A, PCT / CN2024 / 107011, and 202411175069.8 describe the related content of the auxiliary electrode technology, which is referred to for reference. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a display panel and a display device, which can help to improve the anti-overflow effect.

[0006] In order to achieve the above purpose, the present application provides a display panel, which has a display area and a non-display area, the non-display area at least partially surrounds the display area, and the display panel further comprises:

[0007] a substrate;

[0008] at least one dam, which is arranged on one side of the substrate and located in the non-display area;

[0009] a first encapsulation layer, which is arranged on the side of the at least one dam away from the substrate and located in the display area and the non-display area;

[0010] a conductive layer, which is arranged on the side of the first encapsulation layer away from the substrate and comprises at least one blocking structure located in the non-display area, and the orthographic projection of the at least one blocking structure on the substrate at least partially overlaps the orthographic projection of the at least one dam on the substrate.

[0011] In one embodiment, the conductive layer further comprises at least one auxiliary electrode located in the display area, and the display panel further comprises a plurality of light emitting units arranged on one side of the substrate in the display area, the light emitting units comprising a light emitting functional layer and a first electrode arranged in a stacked manner away from the substrate, and the at least one auxiliary electrode is electrically connected to the first electrodes of the plurality of light emitting units.

[0012] Preferably, the first encapsulation layer is further arranged on a side of the plurality of light emitting units away from the substrate.

[0013] Preferably, the at least one auxiliary electrode and the at least one barrier structure are made of the same material.

[0014] Preferably, a distance between a side of the at least one dam away from the substrate and the substrate is greater than a distance between a side of the light emitting unit away from the substrate and the substrate.

[0015] In one embodiment, the first encapsulation layer is provided with a plurality of through holes, and the at least one auxiliary electrode is electrically connected to the first electrodes of the plurality of light emitting units through the plurality of through holes.

[0016] Preferably, the at least one auxiliary electrode comprises one auxiliary electrode, and the auxiliary electrode encloses a first opening, and a normal projection of the light emitting unit on the substrate is located within a normal projection of the corresponding first opening on the substrate.

[0017] Preferably, the at least one auxiliary electrode comprises a plurality of auxiliary electrodes, and the auxiliary electrodes are electrically connected to the first electrodes of the corresponding light emitting units through the corresponding through holes.

[0018] In one embodiment, the at least one dam comprises one dam, and the dam at least partially surrounds the display area; or,

[0019] The dam comprises a first dam and a second dam, and the second dam is arranged on a side of the first dam away from the display area.

[0020] The at least one barrier structure comprises a first barrier portion and a second barrier portion, and a normal projection of the first barrier portion on the substrate at least partially overlaps with a normal projection of the first dam on the substrate.

[0021] A normal projection of the second barrier portion on the substrate at least partially overlaps with a normal projection of the second dam on the substrate.

[0022] Preferably, in a direction perpendicular to the substrate, a size of the second dam is greater than a size of the first dam.

[0023] Preferably, the second barrier portion is farther away from the substrate than the first barrier portion.

[0024] In one embodiment, the conductive layer comprises a metallic material and / or a non-metallic conductive material.

[0025] Preferably, the conductive layer comprises a composite stack structure formed by at least two materials.

[0026] Preferably, the material of the conductive layer comprises at least one of molybdenum, aluminum, titanium, copper, and silver.

[0027] Preferably, the material of the conductive layer comprises at least one of indium tin oxide, indium zinc oxide, graphene, and carbon nanotube.

[0028] In one embodiment, the size of the conductive layer in a direction perpendicular to the substrate comprises 50-1000 nm.

[0029] Preferably, the orthographic projection of the barrier structure on the substrate is within the orthographic projection of the dam on the substrate, or the orthographic projection of the dam on the substrate is within the orthographic projection of the barrier structure on the substrate.

[0030] In one embodiment, the first encapsulation layer comprises an insulating material.

[0031] Preferably, the orthographic projection of the light emitting unit on the substrate is within the orthographic projection of the first encapsulation layer on the substrate.

[0032] Preferably, the orthographic projection of the dam on the substrate is within the orthographic projection of the first encapsulation layer on the substrate.

[0033] In one embodiment, the display panel further comprises a second encapsulation layer, which is disposed on a side of the first encapsulation layer away from the substrate and at least partially located in the display area; the orthographic projection of the auxiliary electrode on the substrate is within the orthographic projection of the second encapsulation layer on the substrate.

[0034] Preferably, the second encapsulation layer comprises an organic material.

[0035] Preferably, the dam is disposed on a side of the second encapsulation layer away from the display area.

[0036] Preferably, the orthographic projection of the barrier structure on the substrate does not overlap with the orthographic projection of the second encapsulation layer on the substrate.

[0037] In one embodiment, the display panel further comprises a third encapsulation layer, which is disposed on the side of the second encapsulation layer away from the substrate and located in the display area and the non-display area;

[0038] Preferably, the orthographic projection of the conductive layer on the substrate is within the orthographic projection of the third encapsulation layer on the substrate.

[0039] Preferably, the third encapsulation layer comprises an insulating material.

[0040] Based on the same inventive concept, the application further discloses a display device comprising the display panel.

[0041] Compared with the prior art, the display panel provided by the application can increase the barrier height on the basis of the dam by stacking the conductive layer on the first encapsulation layer, so that the overflow of the encapsulation material above the first encapsulation layer can be effectively prevented, and the encapsulation quality of the display panel can be ensured.

[0042] In addition, on the premise of improving the anti-overflow effect by the barrier structure, a dam can be arranged in the non-display area, so that the frame size of the display panel can be reduced, and a narrower frame can be realized.

[0043] Further, the conductive layer is reused as an auxiliary electrode in the display area, so that the existing process related to the auxiliary electrode can be utilized without increasing the process, so that the production efficiency and the manufacturability of the product can be improved while the anti-overflow function is improved. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the application or related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art descriptions. Obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0045] Figure 1 It is a schematic view of a related display panel;

[0046] Figure 2 It is a schematic view of the film layer structure of a related display panel;

[0047] Figure 3 It is a schematic view of the film layer structure of the display panel in an embodiment of the application;

[0048] Figure 4 It is a schematic view of the film layer structure of the display area of the display panel in an embodiment of the application;

[0049] Figure 5 Structure diagram of a display area of a display panel in an embodiment of the present application;

[0050] Figure 6 Structure diagram of a film layer of a display panel in another embodiment of the present application;

[0051] Figure 7 Structure diagram of a film layer of a display panel in another embodiment of the present application.

[0052] Marking description:

[0053] 100, display panel; 101, display area; 102, non-display area;

[0054] 1, substrate; 2, dam; 21, first dam; 22, second dam; 3, light emitting unit; 31, second electrode; 32, light emitting functional layer; 33, first electrode; 41, first encapsulation layer; 410, via hole; 42, second encapsulation layer; 43, third encapsulation layer; 5, conductive layer; 51, blocking structure; 511, first blocking part; 512, second blocking part; 52, auxiliary electrode; 520, first opening. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments and drawings.

[0056] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the common meanings understood by those skilled in the art to which the embodiments of the present application belong. The terms “first”, “second” and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms “include” or “contain” and similar terms mean that the components or objects before the terms cover the components or objects listed after the terms and their equivalents, and do not exclude other components or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “up”, “down”, “left”, “right” and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0057] Please refer to Figure 1 , Figure 2As shown in FIG. 1, a related stretchable display panel 100 includes a display area 101 and a non-display area 102 surrounding the display area 101. The display panel 100 includes a substrate 1, a dam 2 disposed on one side of the substrate 1, and a first encapsulation layer 41, a second encapsulation layer 42, and a third encapsulation layer 43 sequentially stacked away from the substrate 1. The display area 101 is provided with a light-emitting unit 3, and the first encapsulation layer 41 is located in the display area 101 and the non-display area 102, covering the light-emitting unit 3 and the dam 2. The second encapsulation layer 42 is mainly located in the display area 101, and the dam 2 is located in the non-display area 102 to prevent overflow of the organic material of the second encapsulation layer 42.

[0058] In addition, in the related art, an insulating layer is provided above the cathode of the light-emitting unit 3, and an auxiliary electrode is provided on the insulating layer, which is connected to the cathode via-hole to provide the cathode potential when the cathode is blocked.

[0059] The inventors have found through long-term research that the dam structure is flattened after the first encapsulation layer 41 covers the dam 2, which reduces the anti-overflow effect to some extent. Moreover, two dams 2 are usually provided in the non-display area 102 to form a double-dam design to ensure the anti-overflow effect, but this increases the frame width of the display panel.

[0060] Based on this, the present application provides a display panel solution to solve the above problems.

[0061] Please refer to Figure 3 As shown in FIG. 1, a related stretchable display panel 100 includes a display area 101 and a non-display area 102 surrounding the display area 101. The display panel 100 includes a substrate 1, a dam 2 disposed on one side of the substrate 1, and a first encapsulation layer 41, a second encapsulation layer 42, and a third encapsulation layer 43 sequentially stacked away from the substrate 1. The display area 101 is provided with a light-emitting unit 3, and the first encapsulation layer 41 is located in the display area 101 and the non-display area 102, covering the light-emitting unit 3 and the dam 2. The second encapsulation layer 42 is mainly located in the display area 101, and the dam 2 is located in the non-display area 102 to prevent overflow of the organic material of the second encapsulation layer 42.

[0062] Specifically, the conductive layer 5 is stacked on the first encapsulation layer 41, and a downward projection of the barrier structure 51 in the non-display area 102 can cover part or all of the dam 2, while the auxiliary electrode 52 in the display area 101 is arranged in the same layer as the barrier structure 51, which can provide a cathode potential. The non-display area 102 can be a frame area.

[0063] The display panel 100 provided by the embodiment has the conductive layer 5 stacked on the first encapsulation layer 41, and the barrier structure 51 in the conductive layer 5 is not planarized by the first encapsulation layer 41 and is arranged above the dam 2, which can increase the barrier height, lengthen the overflow path, and increase the difficulty, so as to effectively prevent the encapsulation material above the first encapsulation layer 41 from overflowing and ensure the encapsulation quality of the display panel. In addition, under the premise of improving the anti-overflow effect by the barrier structure 51, a single dam 2 can be arranged in the non-display area 102, which can reduce the frame size of the display panel 100 and achieve a narrower frame compared with a double-dam design.

[0064] Meanwhile, the conductive layer 5 is reused as the auxiliary electrode 52 in the display area 101, which can utilize the existing auxiliary electrode process related technology without increasing the process, so as to improve the anti-overflow function while avoiding the problems of cost increase and production cycle extension caused by process increase, and improve the production efficiency and product manufacturability.

[0065] Referring to FIGS. 1 to 5, Figure 4 Figure 5 In one embodiment, the conductive layer 5 further includes at least one auxiliary electrode 52, and the auxiliary electrode 52 is located in the display area 101. The display panel 100 includes a plurality of light emitting units 3 located in the display area 101, and the light emitting unit 3 is arranged on one side of the substrate 1. The light emitting unit 3 includes a second electrode 31, a light emitting functional layer 32, and a first electrode 33 stacked in a direction away from the substrate 1, and the at least one auxiliary electrode 52 is electrically connected to the first electrode 33 of the plurality of light emitting units 3.

[0066] Preferably, the first encapsulation layer 41 is further arranged on the side of the plurality of light emitting units 3 away from the substrate 1, so as to protect the light emitting units 3 in the display area 101.

[0067] Preferably, the materials of the auxiliary electrodes 52 and the barrier structures 51 are the same. In the preparation process, the barrier structure 51 and the auxiliary electrode 52 are made in the same layer, that is, the conductive layer 5 is reused as the auxiliary electrode 52 in the display area 101, which can utilize the existing auxiliary electrode process related technology without increasing the process, so as to improve the anti-overflow function while avoiding the problems of cost increase and production cycle extension caused by process increase, and improve the production efficiency and product manufacturability.

[0068] ​Preferably, the side of the dam 2 away from the substrate 1 is farther from the substrate 1 than the side of the light-emitting unit 3 away from the substrate 1. In the vertical direction of the substrate 1, the height of the dam 2 is higher than the height of the light-emitting unit 3, which can play a role in preventing overflow.

[0069] Referring to Figure 4 , Figure 5 As shown in FIG. 4, in an embodiment, a plurality of through holes 410 are formed in the first encapsulation layer 41, and the auxiliary electrode 52 is electrically connected to the first electrode 33 of the light-emitting unit 3 through the plurality of through holes 410.

[0070] In an embodiment, one auxiliary electrode 52 is used, which encloses a plurality of first openings 520. The auxiliary electrode 52 can be in a mesh structure, and the orthographic projection of the light-emitting unit 3 on the substrate 1 is located within the orthographic projection of the corresponding first opening 520 on the substrate 1. The first opening 520 as a mesh hole of the mesh structure has an opening size greater than the light-emitting unit 3, so as to avoid affecting the light-emitting effect of the light-emitting unit 3. The mesh structure of the auxiliary electrode 52 can reduce the resistance of electrode access and wiring, improve the potential uniformity, and avoid the problem of uneven potential distribution in the entire display area caused by large resistance.

[0071] In another embodiment, a plurality of auxiliary electrodes 52 can also be used. The auxiliary electrode 52 corresponds to the through hole 410 one by one, and the plurality of auxiliary electrodes 52 are electrically connected to the first electrode 33 of the corresponding light-emitting unit 3 through the corresponding through hole 410.

[0072] Exemplarily, the light-emitting units 3 of different colors include a light-emitting unit R, a light-emitting unit B, and a light-emitting unit G. The first electrode 33 is a cathode, and the second electrode 31 is an anode.

[0073] Referring to Figure 7 As shown in FIG. 5, in an embodiment, one dam 2 is used, which at least partially surrounds the display area 101. The single dam 2 in the non-display area 102 can reduce the frame size of the display panel 100, and achieve a narrower frame compared with the double dam design. Figure 6 As shown in FIG. 6, in another embodiment, at least one dam 2 includes a first dam 21 and a second dam 22, and the first dam 21 and the second dam 22 at least partially surround the display area 101. The second dam 22 is located on the side of the first dam 21 away from the display area 101. Correspondingly, the blocking structure 51 includes a first blocking part 511 and a second blocking part 512. The orthographic projection of the first blocking part 511 on the substrate 1 at least partially overlaps the orthographic projection of the first dam 21 on the substrate 1. The orthographic projection of the second blocking part 512 on the substrate 1 at least partially overlaps the orthographic projection of the second dam 22 on the substrate 1.

[0074] The double dam structure is adopted, and the first blocking part 511 and the second blocking part 512 are correspondingly arranged above the first dam 21 and the second dam 22 respectively, forming double protection, and the overflow of the organic material used for packaging can be better prevented during the packaging process.

[0075] Optionally, in the direction perpendicular to the substrate 1, the size of the second dam 22 is greater than the size of the first dam 21. That is, the height of the second dam 22 is greater than the height of the first dam 21.

[0076] Optionally, the distance between the side of the second blocking part 512 away from the substrate 1 and the substrate 1 is greater than the distance between the side of the first blocking part 511 away from the substrate 1 and the substrate 1. That is, the height of the second blocking part 512 is greater than the height of the first blocking part 511. The higher second dam 22 and the second blocking part 512 arranged outside the first dam 21 can further enhance the anti-overflow effect and provide more reliable protection for the packaging of the display panel.

[0077] In some embodiments, the conductive layer 5 can be made of a metal material, for example, one of molybdenum (Mo), aluminum (Al), titanium (Ti), copper (Cu), and silver (Ag). Non-metallic conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), graphene, and carbon nanotubes can also be used. Of course, the conductive layer 5 can adopt a composite laminated structure of at least two different materials.

[0078] The conductive layer 5 has good conductivity to realize the auxiliary electrode function, and the material can be flexibly selected according to different application scenarios. For example, transparent conductive materials such as indium tin oxide and indium zinc oxide can be selected in scenarios with requirements for transparency, while metal materials or composite laminates can be selected when high conductivity and stability are pursued.

[0079] In some embodiments, in the direction perpendicular to the substrate 1, the size of the conductive layer 5 includes 50-1000nm. For example, the thickness of the conductive layer 5 can be 50nm, 100nm, 500nm, 800nm, 1000nm, etc.

[0080] In addition, optionally, in the direction parallel to the substrate 1, the width of the blocking structure 51 can be less than the width of the corresponding dam 2, or can be greater than the width of the corresponding dam 2. That is, the orthographic projection of the blocking structure 51 on the substrate 1 is located within the orthographic projection of the dam 2 on the substrate 1. Alternatively, the orthographic projection of the dam 2 on the substrate 1 is located within the orthographic projection of the blocking structure 51 on the substrate 1.

[0081] Specifically, during the design and manufacturing process of the display panel, the size of the conductive layer 5 can be precisely adjusted according to the specific product requirements and process conditions. When space is limited, a smaller conductive layer 5 can be selected to accommodate design requirements such as narrow bezels, without affecting its overflow prevention and auxiliary electrode functions. For products with higher requirements for electrical performance or overflow prevention, a larger conductive layer 5 with an appropriate thickness can be used to ensure a stable cathode potential distribution and better overflow prevention.

[0082] Reference Figure 4 , Figure 5 As shown, in one embodiment, the first encapsulation layer 41 includes an insulating material. The orthographic projection of the light-emitting unit on the substrate 1 and the orthographic projection of the dam 2 on the substrate 1 are respectively located within the orthographic projection of the first encapsulation layer 41 on the substrate 1.

[0083] The first encapsulation layer 41 is an encapsulation layer formed by chemical vapor deposition (CVD) method. It covers the light-emitting unit 3 located in the display area 101 and the dam 2 located in the non-display area 102, and plays a certain planarization role.

[0084] Reference Figure 3 , Figure 4 , Figure 6 As shown, in some embodiments, the display panel 100 further includes a second encapsulation layer 42, which is disposed on the side of the first encapsulation layer 41 away from the substrate 1, and the second encapsulation layer 42 is at least partially located in the display area 101. The orthographic projection of the auxiliary electrode 52 on the substrate 1 is located within the orthographic projection of the second encapsulation layer 42 on the substrate 1. The second encapsulation layer 42 comprises an organic material.

[0085] Optionally, the dam 2 is disposed on the side of the second encapsulation layer 42 away from the display area 101. The orthographic projection of the blocking structure 51 on the substrate 1 does not overlap with the orthographic projection of the second encapsulation layer 42 on the substrate 1. In this way, the dam 2 and the blocking structure 51 together block the outer side of the second encapsulation layer 42, that is, the side closer to the non-display area 102, and can prevent the organic material of the second encapsulation layer 42 from overflowing outward.

[0086] Specifically, the second encapsulation layer 42 is mainly located in the display area 101 and covers the auxiliary electrode 52. The second encapsulation layer 42 is formed by inkjet printing (IJP), which has good flowability and formability, and can accurately cover a specific area of ​​the display panel 100 for encapsulation and protection, preventing external moisture, oxygen and other harmful factors from corroding the internal display structure.

[0087] Continue to refer to Figure 3 , Figure 4 , Figure 6As shown, in some embodiments, the display panel 100 further comprises a third encapsulation layer 43, which is disposed on the side of the second encapsulation layer 42 away from the substrate 1, and the third encapsulation layer 43 is located in the display area 101 and the non-display area 102.

[0088] Optionally, the orthographic projection of the conductive layer 5 on the substrate 1 is located within the orthographic projection of the third encapsulation layer 43 on the substrate 1. That is, the third encapsulation layer 43 covers parts of the conductive layer 5.

[0089] Optionally, the third encapsulation layer 43 comprises an insulating material. Among them, the first encapsulation layer 41 and the third encapsulation layer 43 are inorganic layers, which have high compactness to isolate water and oxygen, and the second encapsulation layer 42 is an organic layer, which has a larger thickness to flatten the surface of the display panel, realizing inorganic-organic-inorganic three-layer encapsulation.

[0090] Based on the same inventive concept, another embodiment of the present application further discloses a display device comprising the display panel in the above embodiments. Further, the display device comprises a mobile phone, a VR device, a computer, a television, a vehicle-mounted display device, etc.

[0091] The display device provided by the embodiment can prevent the overflow of the encapsulation material above the first encapsulation layer 41, and guarantee the encapsulation quality of the display panel, by stacking the barrier structure 51 on the first encapsulation layer 41 to avoid the barrier structure 51 being flattened by the first encapsulation layer 41, thereby increasing the barrier height, lengthening the overflow path, and increasing the difficulty. In addition, under the premise of improving the anti-overflow effect by the barrier structure 51, a single dam 2 can be arranged in the non-display area 102, which can reduce the frame size of the display panel 100 and realize a narrower frame compared with the double dam design.

[0092] Although the present application has been described in conjunction with the specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description.

[0093] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order and still achieve desirable results. Additionally, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous.

[0094] Embodiments of the present application are intended to embrace all such alterations, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any one or more features of a given embodiment are intended to be illustrative only and not limiting of the scope of the application.

Claims

1. A display panel, characterized in that, The display panel has a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the display panel includes: substrate; At least one dam is disposed on one side of the substrate and located in the non-display area; A first encapsulation layer is disposed on the side of the at least one dam away from the substrate, and is located between the display area and the non-display area; A conductive layer is disposed on the side of the first encapsulation layer away from the substrate, and includes at least one blocking structure located in the non-display area, wherein the orthographic projection of the at least one blocking structure on the substrate at least partially overlaps with the orthographic projection of the at least one dam on the substrate; The display panel further includes a plurality of light-emitting units, which are disposed on one side of the substrate and located in the display area; the first encapsulation layer is also disposed on the side of the plurality of light-emitting units away from the substrate; the distance between the side of at least one dam away from the substrate and the substrate is greater than the distance between the side of the light-emitting unit away from the substrate and the substrate.

2. The display panel according to claim 1, characterized in that, The conductive layer further includes at least one auxiliary electrode located in the display area. The light-emitting unit includes a light-emitting functional layer and a first electrode stacked sequentially in a direction away from the substrate. The at least one auxiliary electrode is electrically connected to the first electrode of the plurality of light-emitting units. The at least one auxiliary electrode and the at least one blocking structure are made of the same material.

3. The display panel according to claim 2, characterized in that, The first encapsulation layer has multiple vias, and the at least one auxiliary electrode is electrically connected to the first electrode of the multiple light-emitting units through the multiple vias.

4. The display panel according to claim 3, characterized in that, The at least one auxiliary electrode includes an auxiliary electrode, which surrounds and forms a plurality of first openings, and the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the corresponding first opening on the substrate.

5. The display panel according to claim 3, characterized in that, The at least one auxiliary electrode includes a plurality of auxiliary electrodes, and the auxiliary electrodes are electrically connected to the first electrode of the corresponding light-emitting unit through the corresponding via.

6. The display panel according to claim 1, characterized in that, The at least one dam includes a dam that at least partially surrounds the display area.

7. The display panel according to claim 1, characterized in that, The at least one dam includes a first dam and a second dam, the first dam and the second dam at least partially surrounding the display area, the second dam being disposed on the side of the first dam away from the display area.

8. The display panel according to claim 7, characterized in that, The at least one blocking structure includes a first blocking part and a second blocking part, wherein the orthographic projection of the first blocking part on the substrate at least partially overlaps with the orthographic projection of the first dam on the substrate; and the orthographic projection of the second blocking part on the substrate at least partially overlaps with the orthographic projection of the second dam on the substrate. In a direction perpendicular to the substrate, the size of the second dam is larger than the size of the first dam; the distance between the side of the second blocking portion away from the substrate and the substrate is greater than the distance between the side of the first blocking portion away from the substrate and the substrate.

9. The display panel according to claim 1, characterized in that, The conductive layer includes metallic materials and / or non-metallic conductive materials.

10. The display panel according to claim 9, characterized in that, The conductive layer comprises a composite stack structure formed of at least two materials.

11. The display panel according to claim 9, characterized in that, The conductive layer is made of at least one of molybdenum, aluminum, titanium, copper, and silver.

12. The display panel according to claim 9, characterized in that, The conductive layer is made of at least one of indium tin oxide, indium zinc oxide, graphene, and carbon nanotubes.

13. The display panel according to claim 1, characterized in that, The conductive layer has a size of 50-1000 nm in the direction perpendicular to the substrate.

14. The display panel according to claim 1, characterized in that, The orthographic projection of the barrier structure on the substrate is located within the orthographic projection of the dam on the substrate; or, the orthographic projection of the dam on the substrate is located within the orthographic projection of the barrier structure on the substrate.

15. The display panel according to claim 1, characterized in that, The first encapsulation layer includes an insulating material; the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the first encapsulation layer on the substrate; the orthographic projection of the dam on the substrate is located within the orthographic projection of the first encapsulation layer on the substrate.

16. The display panel according to claim 2, characterized in that, The display panel further includes a second encapsulation layer, which is disposed on the side of the first encapsulation layer away from the substrate and is at least partially located in the display area; the orthographic projection of the auxiliary electrode on the substrate is located within the orthographic projection of the second encapsulation layer on the substrate; the second encapsulation layer includes an organic material; the dam is disposed on the side of the second encapsulation layer away from the display area; the orthographic projection of the blocking structure on the substrate does not overlap with the orthographic projection of the second encapsulation layer on the substrate.

17. The display panel according to claim 16, characterized in that, The display panel further includes a third encapsulation layer, which is disposed on the side of the second encapsulation layer away from the substrate and located in the display area and the non-display area; the orthographic projection of the conductive layer on the substrate is located within the orthographic projection of the third encapsulation layer on the substrate; the third encapsulation layer includes an insulating material.

18. A display device, characterized in that, Includes the display panel as described in any one of claims 1-17.

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