Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises an array substrate, the array substrate comprises a substrate, a first planarization layer and a first metal layer, the first planarization layer and the first metal layer are stacked on one side of the substrate, and the first metal layer is located between the substrate and the first planarization layer; the first metal layer comprises a plurality of auxiliary electrodes; the plurality of light-emitting devices are arranged on one side of the array substrate; the light-emitting device comprises a first electrode, a light-emitting part and a second electrode which are stacked along one side far away from the array substrate; the side, close to the light emitting device, of the array substrate is provided with a plurality of first grooves, and the first grooves at least penetrate through the first planarization layer. The orthographic projection of the first groove on the substrate surrounds at least part of the periphery of the orthographic projection of the light-emitting part of the corresponding light-emitting device on the substrate; a part of the structure of the first electrode of the light-emitting device covers the first groove and is electrically connected with the corresponding auxiliary electrode through the first groove. By adopting the scheme, the finished product yield of the display panel can be improved.

Description

Technical Field

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

[0002] OLED (Organic Light Emitting Diode) display panel is one of the hot topics in the current display panel research field. Compared with liquid crystal display panels, OLED display panels have the advantages of low energy consumption, low cost, self-luminescence, wide viewing angle and fast response speed.

[0003] In the traditional display panel manufacturing process, the light-emitting pixel patterning is usually achieved through a fine metal mask (FMM). FMM technology is mature and has rich experience in mass production. However, FMM technology also has problems such as limited accuracy, high development cost, and long development cycle.

[0004] At present, the fine metal mask-free technology eliminates the limitations of traditional OLED processes on display size, resolution and other screen performance, and has the advantages of high performance, full-range size and agile delivery. Further described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, CN117500332A for reference. However, the finished product yield of OLED display panels made by this preparation process is currently low. Summary of the invention

[0005] Based on this, it is necessary to provide a display panel and a display device that can improve the yield rate of finished display panels in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a display panel, the display panel comprising:

[0007] An array substrate, the array substrate comprising a substrate and a first planarization layer and a first metal layer stacked on one side of the substrate, the first metal layer being located between the substrate and the first planarization layer; the first metal layer comprising a plurality of auxiliary electrodes;

[0008] A plurality of light emitting devices are arranged on one side of the array substrate; the light emitting devices include a first electrode, a light emitting portion, and a second electrode stacked along a side away from the array substrate; the plurality of light emitting devices are arranged corresponding to the plurality of auxiliary electrodes;

[0009] A plurality of first grooves are provided on a side of the array substrate close to the light-emitting device, the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices, the first grooves at least penetrate the first planarization layer, and the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices;

[0010] The orthographic projection of the first groove on the substrate surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; a partial structure of the first electrode of the light-emitting device is covered by the first groove and is electrically connected to the corresponding auxiliary electrode through the first groove.

[0011] In one of the embodiments, the orthographic projection of the first groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate.

[0012] In one embodiment, the first groove includes a plurality of groove segments, and the plurality of groove segments are arranged at intervals.

[0013] In one embodiment, the orthographic projection of the first groove on the substrate is annular;

[0014] Optionally, the orthographic projection of the auxiliary electrode on the substrate is ring-shaped.

[0015] In one of the embodiments, the array substrate further comprises a second planarization layer and a second metal layer stacked on one side of the substrate, and the second metal layer is located between the first planarization layer and the second planarization layer;

[0016] The first groove also penetrates at least the second planarization layer and the second metal layer.

[0017] In one of the embodiments, the array substrate further includes a third planarization layer and a third metal layer which are stacked, and the third metal layer is located between the second planarization layer and the third planarization layer;

[0018] The first groove also penetrates at least the third planarization layer and the third metal layer.

[0019] In one of the embodiments, the array substrate further includes a fourth planarization layer and a fourth metal layer which are stacked, and the fourth metal layer is located between the third planarization layer and the fourth planarization layer;

[0020] The first groove also at least penetrates the fourth planarization layer and the fourth metal layer.

[0021] In one embodiment, the display panel further comprises an isolation structure, which is disposed on one side of the array substrate and defines a plurality of isolation openings; the plurality of isolation openings are disposed corresponding to the plurality of light emitting devices, and at least a portion of the light emitting devices is disposed in the corresponding isolation openings;

[0022] Optionally, the orthographic projection of the isolation structure on the substrate covers the orthographic projection of the plurality of first grooves on the substrate;

[0023] Optionally, the orthographic projection of the isolation structure on the substrate is in a grid shape;

[0024] Optionally, the isolation structure comprises a first isolation portion and a second isolation portion stacked in a direction away from the substrate, and an orthographic projection of the second isolation portion on the substrate covers an orthographic projection of the first isolation portion on the substrate;

[0025] Optionally, the first isolation portion comprises a conductive material;

[0026] Optionally, the first isolation portion includes at least one conductive layer;

[0027] Optionally, the first isolation portion includes a first conductive layer and a second conductive layer stacked in a direction away from the substrate, and an orthographic projection outer contour of the first conductive layer on the substrate is located outside an orthographic projection outer contour of the second conductive layer on the substrate;

[0028] Optionally, the second electrode of the light emitting device is electrically connected to the first isolation portion;

[0029] Optionally, the material of the second isolation portion includes titanium or molybdenum; the material of the first conductive layer includes molybdenum or titanium; and the material of the second conductive layer includes aluminum or copper or silver.

[0030] In one of the embodiments, the display panel includes a bending region, and part of the light emitting device and part of the isolation structure are located in the bending region;

[0031] The isolation structure in the bending area is provided with a plurality of second grooves penetrating the isolation structure; the plurality of second grooves are arranged corresponding to the plurality of light emitting devices located in the bending area;

[0032] Optionally, the orthographic projection of the second groove on the substrate surrounds at least a portion of the outer periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate;

[0033] Optionally, the orthographic projection of the second groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate;

[0034] Optionally, the orthographic projection of the second groove on the substrate is annular;

[0035] Optionally, an orthographic projection outer contour of the first groove on the substrate is located outside an orthographic projection outer contour of the second groove on the substrate.

[0036] In one embodiment, the display panel further includes a pixel definition layer, which is disposed between the isolation structure and the array substrate and defines a plurality of pixel openings;

[0037] The plurality of pixel openings are arranged corresponding to the plurality of light emitting devices, and portions of the first electrodes of the light emitting devices are exposed from the corresponding pixel openings;

[0038] Optionally, the orthographic projection of the pixel definition layer on the substrate covers the orthographic projection of the plurality of first grooves on the substrate.

[0039] In a second aspect, the present application provides another display panel, the display panel comprising:

[0040] An array substrate, the array substrate comprising a substrate and a first planarization layer and a first metal layer stacked on one side of the substrate, the first metal layer being located between the substrate and the first planarization layer; the first metal layer comprising a plurality of auxiliary electrodes;

[0041] An isolation structure, the isolation structure is disposed on one side of the array substrate and defines a plurality of isolation openings;

[0042] A plurality of light-emitting devices are arranged on one side of the array substrate; the light-emitting devices include a first electrode, a light-emitting portion, and a second electrode stacked along a side away from the array substrate; the plurality of light-emitting devices are arranged corresponding to the plurality of isolation openings, and at least part of the light-emitting devices is arranged in the corresponding isolation openings; the plurality of light-emitting devices are arranged corresponding to the plurality of auxiliary electrodes;

[0043] A plurality of first grooves are provided on a side of the array substrate close to the light-emitting device, the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices, the first grooves at least penetrate the first planarization layer, and the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices;

[0044] The orthographic projection of the first groove on the substrate surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; a partial structure of the first electrode of the light-emitting device is covered by the first groove and is electrically connected to the corresponding auxiliary electrode through the first groove.

[0045] In one embodiment, the orthographic projection of the first groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate;

[0046] Optionally, the first groove includes a plurality of groove segments, and the plurality of groove segments are arranged at intervals, or the orthographic projection of the first groove on the substrate is annular;

[0047] Optionally, the orthographic projection of the auxiliary electrode on the substrate is ring-shaped.

[0048] In one of the embodiments, the display panel includes a bending region, and part of the light emitting device and part of the isolation structure are located in the bending region;

[0049] The isolation structure in the bending area is provided with a plurality of second grooves penetrating the isolation structure; the plurality of second grooves are arranged corresponding to the plurality of light emitting devices located in the bending area;

[0050] Optionally, the orthographic projection of the second groove on the substrate surrounds at least a portion of the outer periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate;

[0051] Optionally, the orthographic projection of the second groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate;

[0052] Optionally, the orthographic projection of the second groove on the substrate is annular;

[0053] Optionally, an orthographic projection outer contour of the first groove on the substrate is located outside an orthographic projection outer contour of the second groove on the substrate.

[0054] In one of the embodiments, the array substrate further comprises a second planarization layer and a second metal layer stacked on one side of the substrate, the second metal layer is located between the first planarization layer and the second planarization layer; the first groove also at least penetrates the second planarization layer and the second metal layer;

[0055] The array substrate further comprises a third planarization layer and a third metal layer which are stacked, wherein the third metal layer is located between the second planarization layer and the third planarization layer; and the first groove at least penetrates the third planarization layer and the third metal layer;

[0056] The array substrate further includes a fourth planarization layer and a fourth metal layer which are stacked, and the fourth metal layer is located between the third planarization layer and the fourth planarization layer; and the first groove at least penetrates the fourth planarization layer and the fourth metal layer.

[0057] In a third aspect, the present application also provides a method for preparing a display panel, comprising:

[0058] An array substrate is provided, the array substrate comprising a substrate and a first planarization layer and a first metal layer stacked on one side of the substrate, the first metal layer being located between the substrate and the first planarization layer; the first metal layer comprising a plurality of auxiliary electrodes;

[0059] A plurality of light emitting devices are formed on one side of the array substrate; the light emitting devices include a first electrode, a light emitting portion, and a second electrode stacked along a side away from the array substrate; the plurality of light emitting devices are arranged corresponding to the plurality of auxiliary electrodes;

[0060] A plurality of first grooves are provided on a side of the array substrate close to the light-emitting device, the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices, the first grooves at least penetrate the first planarization layer, and the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices;

[0061] The orthographic projection of the first groove on the substrate surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; a partial structure of the first electrode of the light-emitting device is covered by the first groove and is electrically connected to the corresponding auxiliary electrode through the first groove.

[0062] In a fourth aspect, the present application further provides a display device, comprising the display panel according to any one of the first aspect or the second aspect.

[0063] The array substrate of the display panel is provided with a plurality of first grooves on one side close to the light-emitting device, and the first grooves at least penetrate the first planarization layer in the display substrate, and the orthographic projection of the first grooves on the substrate surrounds at least part of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate, and a part of the structure of the first electrode of the light-emitting device is covered by the first grooves. In this way, the first planarization layer can be at least partially blocked by the first electrode, so that water vapor cannot be transmitted in the blocked part of the first planarization layer, and the first electrode does not necessarily have a cavity in the place where there is water vapor, and the first planarization layer corresponding to the cavity in the first electrode does not necessarily have water vapor, thereby reducing the probability of the light-emitting portion being oxidized and corroded by water vapor, thereby reducing the probability of dark spots on the display panel, and improving the yield rate of the finished product of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 is a cross-sectional view showing a panel in one embodiment;

[0066] Figure 2 is a structural diagram of a first groove in an embodiment;

[0067] Figure 3 is a structural diagram of a first groove in another embodiment;

[0068] Figure 4 is a top view of a display panel in one embodiment;

[0069] Figure 5 A structural diagram of a display panel in one embodiment;

[0070] Figure 6 is a cross-sectional view of a bending area of ​​a display panel in one embodiment;

[0071] Figure 7 A top view of a bending area of ​​a display panel in one embodiment;

[0072] Figure 8 is a cross-sectional view showing a panel in another embodiment;

[0073] Fig. 9 FIG. 1 is a schematic diagram of a process for preparing a display panel in an embodiment.

[0074] Description of reference numerals:

[0075] AA, display area; NA, non-display area;

[0076] 11, substrate; 11a, first groove; 111, substrate; 112, first planarization layer; 113, first metal layer; 114, second planarization layer; 115, second metal layer; 116, third planarization layer; 117, third metal layer; 118, fourth planarization layer; 119, fourth metal layer; 113a, auxiliary electrode;

[0077] 21. Light-emitting device; 211. First electrode; 212. Light-emitting portion; 213. Second electrode;

[0078] 31, isolation structure; 31a, isolation opening; 311, first isolation portion; 312, second isolation portion; 311a, first conductive layer; 311b, second conductive layer;

[0079] 41. pixel definition layer; 51. bending area; 51a. second groove; 61. packaging part. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0081] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0083] The applicant has discovered that after the planarization layer in the array substrate of the display panel is evaporated, although a drying process is performed, there is often residual water vapor. This water vapor will be transmitted in the planarization layer. If anode voids are caused due to process reasons, the water vapor will corrode the light-emitting part of the upper layer of the anode through the anode voids, causing dark spots to appear on the display panel, resulting in a low yield rate of the finished display panel.

[0084] Furthermore, the applicant opens a first groove around the light-emitting part on the array substrate and at least penetrates the first planarization layer, and a part of the structure of the first electrode covers the first groove, so that the first planarization layer can be separated by the first electrode to form isolated islands, so that water vapor in the first planarization layer cannot be transmitted. Where there is water vapor, the first electrode does not necessarily have a hole, and where there is a hole in the first electrode, there is not necessarily water vapor in the first planarization layer. When water vapor cannot be transmitted in the first planarization layer, the probability of the light-emitting part being oxidized and corroded by water vapor is reduced, thereby reducing the probability of dark spots on the display panel and improving the yield rate of the finished product of the display panel.

[0085] Specifically, refer to Figure 1 As shown, a cross-sectional view of a display panel is provided. The display panel may be an OLED display panel or a QLED (Quantum Dot Light Emitting Diodes) display panel.

[0086] The display panel includes an array substrate 11 and a plurality of light-emitting devices 21. The array substrate 11 includes a substrate 111 and a first planarization layer 112 and a first metal layer 113 stacked on one side of the substrate 111, wherein the first metal layer 113 is located between the substrate 111 and the first planarization layer 112; the first metal layer 113 includes a plurality of auxiliary electrodes 113a; the plurality of light-emitting devices 21 are disposed on one side of the array substrate 11; the light-emitting device 21 includes a first electrode 211, a light-emitting portion 212, and a second electrode 213 stacked along a side away from the array substrate 11; and the plurality of light-emitting devices 21 are disposed correspondingly to the plurality of auxiliary electrodes 113a. A plurality of first grooves 11a are provided on one side of the array substrate 11 close to the light-emitting device 21. The plurality of first grooves 11a are arranged in one-to-one correspondence with the plurality of light-emitting devices 21. The first grooves 11a at least penetrate the first planarization layer 112. The plurality of first grooves 11a are arranged in one-to-one correspondence with the plurality of light-emitting devices 21. The orthographic projection of the first groove 11a on the substrate 111 surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111. Part of the structure of the first electrode 211 of the light-emitting device 21 is covered by the first groove 11a, and is electrically connected to the corresponding auxiliary electrode 113a through the first groove 11a.

[0087] The array substrate 11 includes a plurality of planarization layers and a plurality of metal layers that are stacked, and the plurality of planarization layers and the plurality of metal layers that are stacked are arranged between the first electrode 211 and the substrate 111. The specific arrangement structure of the plurality of planarization layers and the plurality of metal layers is as follows: a planarization layer is arranged between two adjacent metal layers, and a planarization layer is arranged between the metal layer farthest from the substrate 111 among the plurality of metal layers and the first electrode 211. The first planarization layer 112 refers to any one of the plurality of planarization layers, and the first metal layer 113 refers to a metal layer that is arranged on the side of the first planarization layer 112 close to the substrate 111.

[0088] Preferably, the first planarization layer 112 refers to the planarization layer closest to the substrate 111 among the multiple planarization layers, and the first metal layer 113 refers to the metal layer closest to the substrate 111 among the multiple metal layers. In this way, the first groove 11a will penetrate all the planarization layers in the array substrate 11, so that all the planarization layers are separated by the first electrode 211 to form isolated islands.

[0089] In one example, if Figure 1 As shown, the array substrate 11 further includes a second planarization layer 114 and a second metal layer 115 stacked on one side of the substrate 111, and the second metal layer 115 is located between the first planarization layer 112 and the second planarization layer 114; the first groove 11a also at least penetrates the second planarization layer 114 and the second metal layer 115. The array substrate 11 further includes a third planarization layer 116 and a third metal layer 117 stacked, and the third metal layer 117 is located between the second planarization layer 114 and the third planarization layer 116; the first groove 11a also at least penetrates the third planarization layer 116 and the third metal layer 117. The array substrate 11 further includes a fourth planarization layer 118 and a fourth metal layer 119 stacked, and the fourth metal layer 119 is located between the third planarization layer 116 and the fourth planarization layer 118; the first groove 11a also at least penetrates the fourth planarization layer 118 and the fourth metal layer 119.

[0090] The material of the planarization layer (including the first planarization layer 112, the second planarization layer 114, the third planarization layer 116 and the fourth planarization layer 118) can be an insulating material such as silicon nitride, silicon oxide and silicon oxynitride or a combination thereof, or a resin material such as photoresist. The material of the metal layer (including the first metal layer 113, the second metal layer 115, the third metal layer 117 and the fourth metal layer 119) can be molybdenum, titanium, aluminum or a combination thereof. For example, the first metal layer 113 can be composed of a stacked titanium material layer, an aluminum material layer and a titanium material layer.

[0091] The stacked first electrode 211, the light-emitting portion 212 and the second electrode 213 constitute a sub-pixel. It can be understood that the first electrode 211 can be an anode and the second electrode 213 can be a cathode. The light-emitting portion 212 includes at least a light-emitting layer (Emissionlayer, EML), and can also include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole blocking layer (HBL) and an electron blocking layer (EBL). Alternatively, the light-emitting functional layer 104b can also be a stacked light-emitting layer, that is, it includes at least two light-emitting layers and a charge generation layer (CGL) located between each adjacent light-emitting layer.

[0092] The plurality of light-emitting devices 21 are arranged correspondingly to the plurality of auxiliary electrodes 113a of the first metal layer 113, which may refer to a one-to-one correspondence between the plurality of light-emitting devices 21 and the plurality of auxiliary electrodes 113a, that is, to achieve individual control of sub-pixels, or may refer to a correspondence between three light-emitting devices 21 and one auxiliary electrode 113a, that is, to achieve control of three sub-pixels by one control electrode. Preferably, the plurality of light-emitting devices 21 correspond one-to-one to the plurality of auxiliary electrodes 113a. It should be noted that "a plurality of A's correspond one-to-one to a plurality of B's" means: each A corresponds to one B.

[0093] The orthographic projection of the first groove 11a on the substrate 111 surrounds at least a portion of the outer periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111, which means that the orthographic projection of the first groove 11a on the substrate 111 surrounds a portion of the outer periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111, or the orthographic projection of the first groove 11a on the substrate 111 surrounds the entire outer periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111.

[0094] To achieve that the orthographic projection of the first groove 11a on the substrate 111 surrounds a portion of the outer periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111, the first groove 11a may include a plurality of groove segments 11aa, and the plurality of groove segments 11aa are arranged at intervals, such as Figure 2As shown, the orthographic projections of the multiple slot segments 11aa arranged at intervals on the substrate 111 surround the orthographic projection periphery of the corresponding light emitting portion 212 on the substrate 111. The first electrode 211 is electrically connected to the auxiliary electrode 113a through the multiple slot segments 11aa, that is, the first electrode 211 and the auxiliary electrode 113a are connected at points.

[0095] To achieve that the orthographic projection of the first groove 11a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111, the orthographic projection of the first groove 11a on the substrate 111 may be annular, such as Figure 3 As shown, the ring shape can be a circular ring, an elliptical ring or a polygonal ring (quadrilateral ring), which is not limited here. It can be understood that Figure 2 and Figure 3 Two structural diagrams of the first groove 11 a are provided, and the structural diagram of the first groove 11 a shows the positional relationship between the first groove 11 a and the light-emitting portion 212 of the corresponding light-emitting device 21 .

[0096] Preferably, the orthographic projection of the first groove 11a on the substrate 111 is selected to surround the entire periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111, so that the first planarization layer 112 can be separated by the first electrode 211 to form isolated islands, so that water vapor in the first planarization layer 112 cannot be transmitted. Where there is water vapor, the first electrode 211 does not necessarily have a hole, and where there is a hole in the first electrode 211, there is not necessarily water vapor in the corresponding first planarization layer 112. When water vapor cannot be transmitted in the first planarization layer 112, the probability of the light-emitting portion 212 being oxidized and corroded by water vapor is reduced, thereby reducing the probability of dark spots on the display panel and improving the yield rate of the display panel.

[0097] Since a part of the structure of the first electrode 211 covers the first groove 11a, the part of the structure of the first electrode 211 covers the sidewall and the bottom wall of the first groove 11a, and the sidewall of the first groove 11a at least penetrates the first planarization layer 112, and is electrically connected to the corresponding auxiliary electrode 113a through the first groove 11a, therefore, the part of the structure of the first electrode 211 at least covers the sidewall of the first planarization layer 112 and at least a part of the surface of the corresponding auxiliary electrode 113a. It can be understood that when the first planarization layer 112 is the planarization layer closest to the substrate 111 among the multiple planarization layers, the part of the structure of the first electrode 211 covers the sidewall of the first planarization layer 112 and the sidewalls of all planarization layers between the first planarization layer 112 and the first electrode 211.

[0098] In addition, since the orthographic projection of the first groove 11a on the substrate 111 surrounds at least part of the periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 111, and the first electrode 211 is electrically connected to the corresponding auxiliary electrode 113a through the first groove 11a, the orthographic projection of the auxiliary electrode 113a on the substrate 111 can also be annular.

[0099] Figure 1 The area framed by the dotted line is the first groove 11a. It can be understood that Figure 1 The two 11a marked in the figure actually refer to one first groove 11a, and similarly, the two 113a marked in the figure actually refer to one auxiliary electrode 113a.

[0100] In the present embodiment, a plurality of first grooves 11a are provided on a side of the array substrate 11 of the display panel close to the light emitting device 21. The first grooves 11a at least penetrate the first planarization layer 112 in the display substrate 11, and the orthographic projection of the first grooves 11a on the substrate 111 surrounds at least a portion of the outer periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111. Part of the structure of the first electrode 211 of the light emitting device 21 is covered by the first grooves 11a. In this way, the first planarization layer 112 can be at least partially blocked by the first electrode 211, so that water vapor cannot be transmitted at the blocked part of the first planarization layer 112, and the first electrode 211 does not necessarily have a cavity at the place where there is water vapor, and the first planarization layer 112 corresponding to the cavity of the first electrode 211 does not necessarily have water vapor, thereby reducing the probability of the light emitting portion 212 being oxidized and corroded by water vapor, thereby reducing the probability of dark spots on the display panel, and improving the yield rate of the finished product of the display panel.

[0101] In one embodiment, continue to refer to Figure 1 As shown, the display panel also includes an isolation structure 31, which is arranged on one side of the array substrate 11 and defines a plurality of isolation openings 31a; the plurality of isolation openings 31a are arranged corresponding to the plurality of light-emitting devices 21, and at least part of the light-emitting devices 21 are arranged in the corresponding isolation openings 31a.

[0102] Among them, the isolation structure 31 refers to: a structure that can isolate the light-emitting portion 212 of the adjacent light-emitting device 21 when the light-emitting portion 212 of the light-emitting device 21 is evaporated. By setting the isolation structure 31, the light-emitting device 21 can be processed by a graphic lithography process, thereby eliminating FMM, which is beneficial to improve PPI. Furthermore, since the light-emitting device 21 is manufactured by a graphic lithography process, compared with the display panel that uses FMM to evaporate the light-emitting device 21, the isolation structure 31 can make the shape of the light-emitting device 21 richer and the arrangement more optimized. In the embodiment of the present application, the isolation structure 31 is an undercut structure with a "large top and small bottom". When the light-emitting portion 212 of the light-emitting device 21 is evaporated, the undercut structure can isolate the light-emitting portion 212.

[0103] The plurality of isolation openings 31a are arranged correspondingly to the plurality of light emitting devices 21, which means that the plurality of isolation openings 21a and the plurality of light emitting devices 22 are arranged one by one. Since at least part of the light emitting device 21 is arranged in the corresponding isolation opening 31a, the area to which the isolation opening 31a belongs is also called the light emitting area.

[0104] The orthographic projection of the isolation structure 31 on the substrate 111 is in a grid shape, so that the light-emitting parts of adjacent sub-pixels are isolated when the light-emitting parts of the sub-pixels are evaporated.

[0105] The isolation structure 31 may be a single-layer structure or a laminated structure. Preferably, the isolation structure 31 is a laminated structure.

[0106] In one example, the isolation structure 31 includes a first isolation portion 311 and a second isolation portion 312 stacked in a direction away from the substrate 111 , and an orthographic projection of the second isolation portion 312 on the substrate 111 covers an orthographic projection of the first isolation portion 311 on the substrate 111 .

[0107] The material of the second isolation portion 312 includes metal, for example, the material of the second isolation portion is titanium or molybdenum.

[0108] The first isolation portion 311 includes a conductive material. The materials constituting the first isolation portion 311 may be all conductive materials or may not be all conductive materials. For example, the materials constituting the first isolation portion 311 include an insulating material and a conductive material.

[0109] Specifically, the first isolation portion 311 includes at least one conductive layer. Figure 1As shown, the first isolation portion 311 includes a first conductive layer 311a and a second conductive layer 311b stacked in a direction away from the substrate 111, and the outer contour of the orthographic projection of the first conductive layer 311a on the substrate 111 is located outside the outer contour of the orthographic projection of the second conductive layer 311b on the substrate 111, wherein the material of the first conductive layer 311a includes molybdenum or titanium; the material of the second conductive layer 311b includes aluminum, copper or silver.

[0110] It can be understood that the first conductive layer 311a and the second conductive layer 311b in the second isolation portion 312 and the first isolation portion 311 form an I-shaped structure. By setting up three stacked conductive layers, the resistance of the isolation structure 31 can be reduced, thereby reducing the power consumption of the display panel.

[0111] The second electrode 213 of the light emitting device 21 is electrically connected to the first isolation portion 311. Figure 1 As shown, the second electrode 213 includes a lap portion (not marked in the figure), and the lap portion covers at least part of the side wall of the first isolation portion 311. It can be understood that the second electrode 213 also includes a main body (not marked in the figure), and the main body at least covers the light-emitting portion 212. By making the lap portion cover the side wall of the first isolation portion 311, the electrical connection resistance between the lap portion and the first isolation portion 311 can be reduced, and then the electrical connection resistance between the lap portion and the isolation structure 31 can be reduced, which is conducive to improving display uniformity.

[0112] The positional relationship between the isolation structure 31 and the first grooves 11 a is as follows: the orthographic projection of the isolation structure 31 on the substrate 111 covers the orthographic projections of the plurality of first grooves 11 a on the substrate 111 .

[0113] In addition, it should be noted that when the first planarization layer 112 is the planarization layer closest to the substrate 111 among multiple planarization layers, the first groove 11a will cause a step difference in the film layer in the isolation structure 31, which can be reduced by increasing the thickness of the first metal layer 113.

[0114] In one embodiment, continue to refer to Figure 1 As shown, the display panel also includes a pixel definition layer 41, which is arranged between the isolation structure 31 and the array substrate 11, and defines a plurality of pixel openings (not marked in the figure), and the plurality of pixel openings are arranged corresponding to the plurality of light-emitting devices 21, and a portion of the first electrode 211 of the light-emitting device 21 is exposed from the corresponding pixel opening.

[0115] The plurality of isolation openings 31a are connected to the plurality of pixel openings in a one-to-one correspondence. Part of the first electrode 211 is exposed from the corresponding pixel opening, that is, for each pixel opening, the orthographic projection of the pixel opening on the substrate 111 covers at least part of the orthographic projection of the corresponding first electrode 211 on the substrate 111.

[0116] The material of the pixel definition layer 41 can be an inorganic insulating material, such as silicon nitride, silicon oxide, etc. The pixel definition layer 41 defines the light-emitting area of ​​each sub-pixel, avoiding the diffusion and color mixing of the light-emitting parts between sub-pixels. In addition, the pixel definition layer 41 has a protective effect on the first electrode 211, preventing the first electrode 211 from being oxidized, etc.

[0117] The positional relationship between the pixel definition layer 41 and the first grooves 11 a is as follows: the orthographic projection of the pixel definition layer 41 on the substrate 111 covers the orthographic projections of the plurality of first grooves 11 a on the substrate 111 .

[0118] based on Figure 1 The display panel, the top view of the display panel is as shown Figure 4 It should be noted that the arrangement of sub-pixels R (red), G (green), and B (blue) is not limited in this application. Figure 4 is just an example.

[0119] In one embodiment, if Figure 5 and Figure 6 As shown, Figure 5 A structural diagram of a display panel is provided. Figure 6 A cross-sectional view of a bending area of ​​a display panel is provided. The display panel includes a display area AA and a non-display area NA surrounding the display area AA; the display area includes a bending area 51, a portion of the light emitting device 21 and a portion of the isolation structure 31 are located in the bending area 51, and of course a portion of the array substrate 11 and a portion of the pixel definition layer 41 are also located in the bending area. Figure 5 In FIG. (a), the bending region 51 extends along a first direction x, Figure 5 In FIG. (b), the bending area 51 extends along the second direction y. The display panel can be applied to electronic devices with a folding function.

[0120] The isolation structure 31 of the bending region 51 is provided with a plurality of second grooves 51a penetrating the isolation structure 31; the plurality of second grooves 51a are arranged corresponding to the plurality of light emitting devices 21 located in the bending region 51. The orthographic projections of the plurality of second grooves 51a on the substrate 111 are in a grid shape.

[0121] The second groove 51 a may have a similar structure to the first groove 11 a , that is, the orthographic projection of the second groove 51 a on the substrate 111 surrounds at least a portion of the outer periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111 .

[0122] The orthographic projection of the second groove 51a on the substrate 111 surrounds at least part of the periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111, which means: the orthographic projection of the second groove 51a on the substrate 111 surrounds part of the periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111, or the orthographic projection of the second groove 51a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111. Preferably, the orthographic projection of the second groove 51a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111.

[0123] The orthographic projection of the second groove 51a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light-emitting portion 212 of the corresponding light-emitting device 21 on the substrate 11, and the orthographic projection of the second groove 51a on the substrate 111 can be annular, which can be a circular ring, an elliptical ring or a polygonal ring (quadrilateral ring), which is not limited here.

[0124] The positional relationship between the second groove 51a and the first groove 11a is: the orthographic projection outer contour of the first groove 11a on the substrate 111 is located outside the orthographic projection outer contour of the second groove 51a on the substrate 111, or the orthographic projection outer contour of the second groove 51a on the substrate 111 is located outside the orthographic projection outer contour of the first groove 11a on the substrate 111. Preferably, the orthographic projection outer contour of the first groove 11a on the substrate 111 is selected to be located outside the orthographic projection outer contour of the second groove 51a on the substrate 111.

[0125] It can be understood that the side walls of the second groove 51a and the first groove 11a can both be arc-shaped or inclined, which is not limited here.

[0126] In this embodiment, first, the first groove 11a can reduce the thickness of the film layer in the bending area, thereby reducing the bending stress and improving the folding ability of the display panel. Second, because the material constituting the isolation structure 31 includes metal, which is not easy to be bent, the isolation structure 31 in the bending area 51 of the display panel and the light-emitting part made by IJP (Ink-jet Printing) technology are prone to peeling off due to deformation differences, causing product display abnormalities. Therefore, the applicant has improved the problem of the light-emitting part peeling off due to deformation differences between the isolation structure 31 and the light-emitting part by opening a plurality of second grooves 51a that penetrate the isolation structure 31 on the isolation structure 31 in the bending area 51.

[0127] based on Figure 6 The display panel, the top view of the bending area of ​​the display panel is as shown in Figure 7It should be noted that the arrangement of sub-pixels R (red), G (green), and B (blue) is not limited in this application. Figure 7 is just an example.

[0128] In one embodiment, if Figure 8 As shown, a method based on Figure 1 The display panel further includes a plurality of packaging parts, and the plurality of packaging parts 61 are disposed one by one correspondingly on a side of the second electrode 213 away from the substrate 111 .

[0129] The encapsulation part 61 may be a single-layer inorganic film layer or multiple-layer inorganic film layers, and the inorganic film layer may be a silicon oxide layer, a silicon nitride layer, etc. The encapsulation part 61 may also be a mixture of an organic film layer and an inorganic film layer. The encapsulation part 61 may prevent the sub-pixel from being corroded by water vapor.

[0130] In one embodiment, Figure 1-Figure 8 As shown, the present application also provides another display panel, including an array substrate 11, a plurality of light-emitting devices 21 and an isolation structure 31. The array substrate 11 includes a substrate 111 and a first planarization layer 112 and a first metal layer 113 stacked on one side of the substrate 11, wherein the first metal layer 113 is located between the substrate 111 and the first planarization layer 112; the first metal layer 113 includes a plurality of auxiliary electrodes 113a.

[0131] An isolation structure 31 is provided on one side of the array substrate 11 and defines a plurality of isolation openings 31a. A plurality of light emitting devices 21 are provided on one side of the array substrate 11; the light emitting device 21 comprises a first electrode 211, a light emitting portion 212 and a second electrode 213 stacked and arranged along a side away from the array substrate 11; the plurality of light emitting devices 21 are provided corresponding to the plurality of isolation openings 31a, and at least a portion of the light emitting devices 21 is provided in the corresponding isolation openings 31a; the plurality of light emitting devices 21 are provided corresponding to the plurality of auxiliary electrodes 113a. Among them, a plurality of first grooves 11a are provided on one side of the array substrate 11 close to the light-emitting device 21, and the plurality of first grooves 11a are arranged in a one-to-one correspondence with the plurality of light-emitting devices 21. The first grooves 11a at least penetrate the first planarization layer 112, and the plurality of first grooves 11a are arranged in a one-to-one correspondence with the plurality of light-emitting devices 21; the orthographic projection of the first groove 11a on the substrate 11 surrounds at least part of the periphery of the orthographic projection of the light-emitting part of the corresponding light-emitting device 21 on the substrate 111; a partial structure of the first electrode 211 of the light-emitting device 21 is covered by the first groove 11a, and is electrically connected to the corresponding auxiliary electrode 113a through the first groove 11a.

[0132] In one embodiment, the orthographic projection of the first groove 11 a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111 .

[0133] Optionally, the first groove 11 a includes a plurality of groove segments 11 aa , and the plurality of groove segments 11 aa are arranged at intervals, or the orthographic projection of the first groove 11 a on the substrate 111 is annular.

[0134] Optionally, the orthographic projection of the auxiliary electrode 113 a on the substrate 111 is ring-shaped.

[0135] In one embodiment, the display panel includes a bending area 51, and part of the light-emitting device 21 and part of the isolation structure 31 are located in the bending area 51; a plurality of second grooves 51a penetrating the isolation structure 31 are opened on the isolation structure 31 of the bending area 51; and the plurality of second grooves 51a are arranged corresponding to the plurality of light-emitting devices 21 located in the bending area 51.

[0136] Optionally, the orthographic projection of the second groove 51 a on the substrate 111 surrounds at least a portion of the outer periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111 .

[0137] Optionally, the orthographic projection of the second groove 51 a on the substrate 111 surrounds the entire periphery of the orthographic projection of the light emitting portion 212 of the corresponding light emitting device 21 on the substrate 111 ;

[0138] Optionally, the orthographic projection of the second groove 51 a on the substrate 111 is ring-shaped.

[0139] Optionally, an orthographic projection outer contour of the first groove 11 a on the substrate 111 is located outside an orthographic projection outer contour of the second groove 51 a on the substrate 111 .

[0140] In one embodiment, the array substrate 11 further includes a second planarization layer 114 and a second metal layer 115 stacked on one side of the substrate 111, the second metal layer 115 is located between the first planarization layer 112 and the second planarization layer 114; the first groove 11a also at least penetrates the second planarization layer 114 and the second metal layer 115. The array substrate 11 further includes a third planarization layer 116 and a third metal layer 117 stacked, the third metal layer 117 is located between the second planarization layer 114 and the third planarization layer 116; the first groove 11a also at least penetrates the third planarization layer 116 and the third metal layer 117. The array substrate 11 further includes a fourth planarization layer 118 and a fourth metal layer 119 stacked, the fourth metal layer 119 is located between the third planarization layer 116 and the fourth planarization layer 118; the first groove 11a also at least penetrates the fourth planarization layer 118 and the fourth metal layer 119.

[0141] The display panel in this embodiment has been described in detail above and will not be described again here.

[0142] In one embodiment, Fig. 9 As shown, the present application also provides a method for preparing a display panel, and the method for preparing a display panel can be used to prepare the display panel in the above display panel embodiment.

[0143] The method for preparing the display panel includes:

[0144] Step 901, providing an array substrate 11, the array substrate 11 includes a substrate 111 and a first planarization layer 112 and a first metal layer 113 stacked on one side of the substrate 111, the first metal layer 113 is located between the substrate 111 and the first planarization layer 112; the first metal layer 113 includes a plurality of auxiliary electrodes 113a.

[0145] Step 902, forming a plurality of light-emitting devices 21 on one side of the array substrate 11; the light-emitting devices 21 include a first electrode 211, a light-emitting portion 212 and a second electrode 213 stacked along a side away from the array substrate 11; the plurality of light-emitting devices 21 are arranged corresponding to the plurality of isolation openings 31a, and at least part of the light-emitting devices 21 are arranged in the corresponding isolation openings 31a; the plurality of light-emitting devices 21 are arranged corresponding to the plurality of auxiliary electrodes 113a.

[0146] Among them, a plurality of first grooves 11a are provided on one side of the array substrate 11 close to the light-emitting device 21, and the plurality of first grooves 11a are arranged in a one-to-one correspondence with the plurality of light-emitting devices 21, and the first grooves 11a at least penetrate the first planarization layer 112, and the plurality of first grooves 11a are arranged in a one-to-one correspondence with the plurality of light-emitting devices 21; the orthographic projection of the first groove 11a on the substrate 111 surrounds at least part of the periphery of the orthographic projection of the light-emitting part of the corresponding light-emitting device 21 on the substrate 111; a partial structure of the first electrode 211 of the light-emitting device 21 is covered by the first groove 11a, and is electrically connected to the corresponding auxiliary electrode 113a through the first groove 11a.

[0147] Optionally, before forming a plurality of light emitting devices 21 on one side of the array substrate 11 , the manufacturing method further includes: forming an isolation structure 31 on one side of the array substrate 11 , and defining a plurality of isolation openings 31 a .

[0148] Optionally, before forming the isolation structure 31 on one side of the array substrate 11 , the manufacturing method further includes: forming a pixel definition layer 41 on one side of the array substrate 11 to define a plurality of pixel openings.

[0149] Optionally, the preparation method further includes: forming a plurality of second grooves 51 a penetrating the isolation structure 31 on the isolation structure 31 in the bending area 51 of the display panel; and the plurality of second grooves 51 a are arranged corresponding to the plurality of light-emitting devices 21 located in the bending area 51 .

[0150] In one embodiment, the present application provides a display device, which includes the display panel described in any of the above display panel embodiments.

[0151] The display device can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat-panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0152] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0153] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel comprises: An array substrate, the array substrate comprising a substrate and a first planarization layer and a first metal layer stacked on one side of the substrate, the first metal layer being located between the substrate and the first planarization layer; the first metal layer comprising a plurality of auxiliary electrodes; A plurality of light emitting devices are arranged on one side of the array substrate; the light emitting devices include a first electrode, a light emitting portion, and a second electrode stacked along a side away from the array substrate; the plurality of light emitting devices are arranged corresponding to the plurality of auxiliary electrodes; A plurality of first grooves are provided on a side of the array substrate close to the light-emitting device, the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices, the first grooves at least penetrate the first planarization layer, and the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices; The orthographic projection of the first groove on the substrate surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; a partial structure of the first electrode of the light-emitting device is covered by the first groove and is electrically connected to the corresponding auxiliary electrode through the first groove.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the first groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate.

3. The display panel according to claim 1, characterized in that: The first groove includes a plurality of groove segments, and the plurality of groove segments are arranged at intervals.

4. The display panel according to claim 1, characterized in that: The orthographic projection of the first groove on the substrate is annular; Optionally, the orthographic projection of the auxiliary electrode on the substrate is ring-shaped.

5. The display panel according to claim 1, characterized in that: The array substrate further comprises a second planarization layer and a second metal layer stacked on one side of the substrate, wherein the second metal layer is located between the first planarization layer and the second planarization layer; The first groove also penetrates at least the second planarization layer and the second metal layer.

6. The display panel according to claim 5, characterized in that: The array substrate further comprises a third planarization layer and a third metal layer which are stacked, and the third metal layer is located between the second planarization layer and the third planarization layer; The first groove also penetrates at least the third planarization layer and the third metal layer.

7. The display panel according to claim 6, characterized in that: The array substrate further comprises a fourth planarization layer and a fourth metal layer which are stacked, and the fourth metal layer is located between the third planarization layer and the fourth planarization layer; The first groove also at least penetrates the fourth planarization layer and the fourth metal layer.

8. The display panel according to claim 1, characterized in that: The display panel further includes an isolation structure, which is disposed on one side of the array substrate and defines a plurality of isolation openings; The plurality of isolation openings are arranged corresponding to the plurality of light emitting devices, and at least a portion of the light emitting devices is arranged in the corresponding isolation openings; Optionally, the orthographic projection of the isolation structure on the substrate covers the orthographic projection of the plurality of first grooves on the substrate; Optionally, the orthographic projection of the isolation structure on the substrate is in a grid shape; Optionally, the isolation structure comprises a first isolation portion and a second isolation portion stacked in a direction away from the substrate, and an orthographic projection of the second isolation portion on the substrate covers an orthographic projection of the first isolation portion on the substrate; Optionally, the first isolation portion comprises a conductive material; Optionally, the first isolation portion includes at least one conductive layer; Optionally, the first isolation portion includes a first conductive layer and a second conductive layer stacked in a direction away from the substrate, and an orthographic projection outer contour of the first conductive layer on the substrate is located outside an orthographic projection outer contour of the second conductive layer on the substrate; Optionally, the second electrode of the light emitting device is electrically connected to the first isolation portion; Optionally, the material of the second isolation portion includes titanium or molybdenum; the material of the first conductive layer includes molybdenum or titanium; and the material of the second conductive layer includes aluminum or copper or silver.

9. The display panel according to claim 8, characterized in that: The display panel comprises a bending region, and part of the light emitting device and part of the isolation structure are located in the bending region; The isolation structure in the bending area is provided with a plurality of second grooves penetrating the isolation structure; The plurality of second grooves are arranged corresponding to the plurality of light emitting devices located in the bending area; Optionally, the orthographic projection of the second groove on the substrate surrounds at least a portion of the outer periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; Optionally, the orthographic projection of the second groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; Optionally, the orthographic projection of the second groove on the substrate is annular; Optionally, an orthographic projection outer contour of the first groove on the substrate is located outside an orthographic projection outer contour of the second groove on the substrate.

10. The display panel according to claim 8, characterized in that: The display panel further includes a pixel definition layer, which is disposed between the isolation structure and the array substrate and defines a plurality of pixel openings; The plurality of pixel openings are arranged corresponding to the plurality of light emitting devices, and portions of the first electrodes of the light emitting devices are exposed from the corresponding pixel openings; Optionally, the orthographic projection of the pixel definition layer on the substrate covers the orthographic projection of the plurality of first grooves on the substrate.

11. A display panel, characterized in that: The display panel comprises: An array substrate, the array substrate comprising a substrate and a first planarization layer and a first metal layer stacked on one side of the substrate, the first metal layer being located between the substrate and the first planarization layer; the first metal layer comprising a plurality of auxiliary electrodes; An isolation structure, the isolation structure is disposed on one side of the array substrate and defines a plurality of isolation openings; A plurality of light-emitting devices are arranged on one side of the array substrate; the light-emitting devices include a first electrode, a light-emitting portion, and a second electrode stacked along a side away from the array substrate; the plurality of light-emitting devices are arranged corresponding to the plurality of isolation openings, and at least part of the light-emitting devices is arranged in the corresponding isolation openings; the plurality of light-emitting devices are arranged corresponding to the plurality of auxiliary electrodes; A plurality of first grooves are provided on a side of the array substrate close to the light-emitting device, the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices, the first grooves at least penetrate the first planarization layer, and the plurality of first grooves are arranged in a one-to-one correspondence with the plurality of light-emitting devices; The orthographic projection of the first groove on the substrate surrounds at least a portion of the periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; a partial structure of the first electrode of the light-emitting device is covered by the first groove and is electrically connected to the corresponding auxiliary electrode through the first groove.

12. The display panel according to claim 11, characterized in that: The orthographic projection of the first groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; Optionally, the first groove includes a plurality of groove segments, and the plurality of groove segments are arranged at intervals, or the orthographic projection of the first groove on the substrate is annular; Optionally, the orthographic projection of the auxiliary electrode on the substrate is ring-shaped.

13. The display panel according to claim 11, characterized in that: The display panel comprises a bending region, and part of the light emitting device and part of the isolation structure are located in the bending region; The isolation structure in the bending area is provided with a plurality of second grooves penetrating the isolation structure; The plurality of second grooves are arranged corresponding to the plurality of light emitting devices located in the bending area; Optionally, the orthographic projection of the second groove on the substrate surrounds at least a portion of the outer periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; Optionally, the orthographic projection of the second groove on the substrate surrounds the entire periphery of the orthographic projection of the light-emitting portion of the corresponding light-emitting device on the substrate; Optionally, the orthographic projection of the second groove on the substrate is annular; Optionally, an orthographic projection outer contour of the first groove on the substrate is located outside an orthographic projection outer contour of the second groove on the substrate.

14. The display panel according to claim 11, characterized in that: The array substrate further comprises a second planarization layer and a second metal layer stacked on one side of the substrate, the second metal layer being located between the first planarization layer and the second planarization layer; the first groove also at least penetrates the second planarization layer and the second metal layer; The array substrate further comprises a third planarization layer and a third metal layer which are stacked, wherein the third metal layer is located between the second planarization layer and the third planarization layer; and the first groove at least penetrates the third planarization layer and the third metal layer; The array substrate further includes a fourth planarization layer and a fourth metal layer which are stacked, and the fourth metal layer is located between the third planarization layer and the fourth planarization layer; and the first groove at least penetrates the fourth planarization layer and the fourth metal layer.

15. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 14.

Images