Display panel, manufacturing method thereof and display device

Abstract

The invention discloses a display panel, a manufacturing method thereof and a display device, and belongs to the technical field of display. The display panel comprises a substrate, a pixel defining layer, an organic supporting layer, a first electrode layer, a light-emitting layer and a second electrode layer, a plurality of first bulges are arranged on the part, positioned in the pixel region, of the organic supporting layer, and the plurality of first bulges are arranged in an array to form a micro-lens structure. Therefore, when the display panel emits light, the light extraction rate can be effectively improved through the micro-lens structure. A plurality of second protrusions are arranged on the portion, located in the non-pixel area, of the organic supporting layer, the second electrode layer and the auxiliary electrode are in effective lap joint in groove structures of the second protrusions, the contact area of the second electrode layer and the auxiliary electrode can be effectively increased through a microstructure formed by the second protrusions, and therefore the contact resistance is reduced, and the display effect is improved. Therefore, the electrical connection performance between the second electrode layer and the auxiliary electrode is effectively improved, and the display effect of the display panel is good.

Description

Display panel, manufacturing method thereof, and display device Technical Field

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

[0002] Current organic light-emitting diode (OLED) display panels typically consist of an anode layer, an organic light-emitting layer, and a cathode layer. Top-emission OLED display panels, which offer a larger aperture ratio, have become a research hotspot in recent years.

[0003] Top-emitting OLED display panels require a thin, transparent cathode layer and a reflective anode layer to increase light transmittance. However, thin, transparent cathode layers often suffer from high resistance and significant IR drop. Typically, the farther away from the power supply point in the cathode layer, the more pronounced the voltage drop, resulting in noticeable uneven light emission in OLED display panels.

[0004] Summary of the Invention

[0005] The present invention provides a display panel, a manufacturing method thereof, and a display device. The present invention can solve the problem of obvious uneven light emission in OLED display panels in the prior art. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, comprising:

[0007] substrate;

[0008] A pixel defining layer located on the substrate, the pixel defining layer being used to define a plurality of pixel regions and a non-pixel region located outside the pixel regions on the substrate;

[0009] an organic supporting layer located on a side of the pixel defining layer facing the substrate, wherein a portion of the organic supporting layer located in the pixel area has a plurality of first protrusions, and a portion of the organic supporting layer located in the non-pixel area has a plurality of second protrusions, and sidewalls of the second protrusions have groove structures;

[0010] and, a first electrode layer, a light-emitting layer, and a second electrode layer sequentially arranged in a direction perpendicular to and away from the substrate, wherein the first electrode layer is located on a side of the organic supporting layer away from the substrate;

[0011] Among them, the first electrode layer includes: a first electrode located at least in the pixel area and distributed on the multiple first protrusions, and an auxiliary electrode located in the non-pixel area and separated from the first electrode, a portion of the auxiliary electrode is located in the groove structure, and the second electrode layer can extend into the groove structure and be electrically connected to the auxiliary electrode.

[0012] Optionally, the plurality of second protrusions are divided into at least one group of second protrusions, and a group of second protrusions includes a plurality of second protrusions arranged in an array, and the orthographic projection of the second protrusion on the substrate is in a ring shape.

[0013] Optionally, for two adjacent second protrusions in a group of second protrusions, a portion of one second protrusion is reused with a portion of the other second protrusion.

[0014] Optionally, a group of the second protrusions includes: a first annular protrusion and a plurality of second annular protrusions, wherein the plurality of second annular protrusions are distributed around the periphery of the first annular protrusion;

[0015] The shape formed by the orthographic projections of the first annular protrusion on the substrate is a first polygon, and the shape formed by the orthographic projections of the second annular protrusion on the substrate is a second polygon; the number of sides of the first polygon is greater than the number of sides of the second polygon.

[0016] Optionally, when the multiple second protrusions are divided into multiple groups of second protrusions, for two adjacent groups of second protrusions, a portion of the second annular protrusion in one group of second protrusions is reused with a portion of the second annular protrusion in the other group of second protrusions.

[0017] Optionally, the thickness of the second protrusion first gradually decreases and then gradually increases in a direction perpendicular to and away from the substrate.

[0018] Optionally, the light-emitting layer includes: a first sub-light-emitting layer, a second sub-light-emitting layer and a third sub-light-emitting layer;

[0019] The first sub-light emitting layer is located in the pixel area and distributed on the first electrode; the second sub-light emitting layer and the third sub-light emitting layer are both located in the non-pixel area, and the second sub-light emitting layer is distributed on the second protrusion, and the orthographic projection of the third sub-light emitting layer on the substrate does not overlap with the orthographic projection of the second protrusion on the substrate;

[0020] Wherein, the second sub-light emitting layer is separated from the third sub-light emitting layer.

[0021] Optionally, the second electrode layer includes: a first part located in the pixel area, a second part located in the non-pixel area and distributed on the second sub-light-emitting layer, and a third part for connecting the first part and the second part, and a part of the third part can extend into the groove structure and overlap with the auxiliary electrode.

[0022] Optionally, a surface of the first protrusion facing away from the substrate is a first arc-shaped convex surface.

[0023] Optionally, the plurality of first protrusions are divided into: at least one group of first protrusions, wherein a group of first protrusions includes a plurality of first protrusions arranged in an array, and the shape of the orthographic projection of the first protrusions on the substrate is a polygon.

[0024] Optionally, a group of the first protrusions includes: a middle protrusion and a plurality of edge protrusions, wherein the plurality of edge protrusions are distributed around the periphery of the middle protrusion;

[0025] There is a first distance between the middle protrusion and the edge protrusion, a second distance between two adjacent edge protrusions, and the first distance is equal to the second distance.

[0026] Optionally, the number of sides of the orthographic projection of the middle protrusion on the substrate is equal to the number of sides of the orthographic projection of the edge protrusion on the substrate.

[0027] Optionally, a side of the first electrode facing away from the first protrusion has a plurality of second arc-shaped convex surfaces that match the plurality of first arc-shaped convex surfaces one by one.

[0028] Optionally, the pixel defining layer is also used to define multiple transparent areas on the substrate, and the organic supporting layer has multiple hollow grooves corresponding one-to-one to the multiple transparent areas, and the orthographic projections of the hollow grooves on the substrate are located within the orthographic projections of the transparent areas on the substrate.

[0029] Optionally, the substrate includes: a pixel driving circuit electrically connected to the first electrode, and a cathode signal line electrically connected to the auxiliary electrode.

[0030] Optionally, the display panel further includes: a passivation protection layer located between the substrate and the organic support layer, the passivation protection layer having a plurality of first via holes;

[0031] A portion of the organic supporting layer located in the non-pixel area has a plurality of second via holes connected to the plurality of first via holes in a one-to-one correspondence;

[0032] The first electrode is electrically connected to the substrate through a portion of the first via hole and the second via hole that are interconnected; the auxiliary electrode is electrically connected to the cathode signal line through another portion of the first via hole and the second via hole that are interconnected.

[0033] Optionally, the material of the organic support layer includes: polyamide fiber or resin.

[0034] Optionally, the display panel further includes: an encapsulation layer located on a side of the second electrode layer facing away from the substrate.

[0035] In another aspect, a method for manufacturing a display panel is provided. The method for manufacturing a display panel can be used to prepare any of the above-mentioned display panels, and the method comprises:

[0036] forming a pixel defining layer, an organic support layer, and a first electrode layer, a light-emitting layer, and a second electrode layer sequentially arranged in a direction perpendicular to and away from the substrate on a substrate;

[0037] In which, the organic support layer is located on the side of the pixel definition layer facing the substrate, and the pixel definition layer is used to define multiple pixel areas and non-pixel areas located outside the pixel areas on the substrate; the part of the organic support located in the pixel area has multiple first protrusions, and the part of the organic support located in the non-pixel area has multiple second protrusions, and the sidewalls of the second protrusions have a groove structure; the first electrode layer is located on the side of the organic support layer away from the substrate, and the first electrode layer includes: a first electrode at least located in the pixel area and distributed on the multiple first protrusions, and an auxiliary electrode located in the non-pixel area and separated from the first electrode, a part of the auxiliary electrode is located in the groove structure, and the second electrode layer can extend into the groove structure and be electrically connected to the auxiliary electrode.

[0038] On the other hand, a display device is provided, comprising: a power supply component and a display panel, wherein the power supply component is used to supply power to the display panel, and the display panel is any one of the display panels given above.

[0039] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0040] A display panel may include: a substrate, a pixel defining layer located on the substrate, an organic support layer located on the side of the pixel defining layer facing the substrate, and a first electrode layer, a light-emitting layer, and a second electrode layer arranged in sequence in a direction perpendicular to and away from the substrate. By arranging the organic support layer on the side of the pixel defining layer facing the substrate, a portion of the organic support layer located within the pixel area of ​​the display panel is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged in an array to form a microlens structure. In this way, when the display panel emits light, the light extraction rate can be effectively improved by the microlens structure. In addition, a portion of the organic support layer located within the non-pixel area of ​​the display panel is provided with a plurality of second protrusions. Since when the light-emitting layer is formed within the non-pixel area of ​​the display panel, the light-emitting layer will be disconnected in the area where the second protrusions are located, and each second protrusion has a groove structure on its sidewall. Therefore, a portion of the auxiliary electrode can be located within the groove structure, and a portion of the second electrode layer can extend into the groove structure and be electrically connected to this portion of the auxiliary electrode. In this way, effective overlap between the second electrode layer and the auxiliary electrode in the first electrode layer can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer and the auxiliary electrode, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer and the auxiliary electrode, so that the display effect of the display panel is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] FIG1 is a schematic diagram of a film structure of a display panel provided in an embodiment of the present application;

[0043] FIG2 is a schematic diagram showing the distribution of first protrusions and second protrusions in an organic supporting layer provided in an embodiment of the present application;

[0044] FIG3 is a top view of a group of second protrusions provided in an embodiment of the present application;

[0045] FIG4 is a top view of a plurality of groups of second protrusions provided in an embodiment of the present application;

[0046] FIG5 is a cross-sectional view of a second protrusion provided in an embodiment of the present application;

[0047] FIG6 is a schematic diagram of a film structure of another display panel provided in an embodiment of the present application;

[0048] FIG7 is a top view of a group of first protrusions provided in an embodiment of the present application;

[0049] FIG8 is a top view of a display panel provided in an embodiment of the present application;

[0050] FIG9 is a top view of another display panel provided in an embodiment of the present application;

[0051] FIG10 is a schematic diagram of a film structure of another display panel provided in an embodiment of the present application;

[0052] FIG11 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application;

[0053] FIG12 is a schematic diagram of a film structure of a substrate provided in an embodiment of the present application;

[0054] FIG13 is a top view of a light shielding layer provided in an embodiment of the present application;

[0055] FIG14 is a top view of an active layer pattern provided in an embodiment of the present application;

[0056] FIG15 is a top view of a gate insulating layer provided in an embodiment of the present application;

[0057] FIG16 is a top view of an interlayer dielectric layer provided in an embodiment of the present application;

[0058] FIG17 is a top view of a second conductive pattern provided in an embodiment of the present application;

[0059] FIG18 is a schematic diagram of a structure for forming a passivation protection layer according to an embodiment of the present application;

[0060] FIG19 is a schematic diagram of a structure for forming an organic support layer provided in an embodiment of the present application;

[0061] FIG20 is a top view of an organic support layer provided in an embodiment of the present application;

[0062] FIG21 is a schematic diagram of a structure for forming a first via hole provided in an embodiment of the present application;

[0063] FIG22 is a schematic diagram of forming a first electrode layer on a substrate according to an embodiment of the present application;

[0064] FIG23 is a top view of a first electrode layer provided in an embodiment of the present application;

[0065] FIG24 is a schematic diagram of forming a pixel defining layer on a first electrode layer according to an embodiment of the present application;

[0066] FIG25 is a top view of a pixel defining layer provided in an embodiment of the present application;

[0067] FIG26 is a schematic diagram of forming a light-emitting layer on a pixel defining layer according to an embodiment of the present application;

[0068] FIG27 is a schematic diagram of forming a second electrode layer on a light-emitting layer according to an embodiment of the present application.

[0069] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0070] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0071] Please refer to Figure 1, which is a schematic diagram of the film layer structure of a display panel provided in an embodiment of the present application. The display panel 000 may include: a substrate 100, a pixel defining layer 200 located on the substrate 100, an organic support layer 300 located on the side of the pixel defining layer 200 facing the substrate 100, and a first electrode layer 400, a light-emitting layer 500, and a second electrode layer 600 arranged in a direction perpendicular to and away from the substrate 100.

[0072] The pixel defining layer 200 in the display panel 000 may be used to define a plurality of pixel regions 100 a and non-pixel regions 100 b located around the pixel regions 100 a on the substrate 100 .

[0073] The portion of the organic supporting layer 300 in the display panel 000 located within the pixel area 100a of the display panel may have a plurality of first protrusions 301, and the portion of the organic supporting layer 300 located within the non-pixel area 100b of the display panel may have a plurality of second protrusions 302, and the sidewalls of the second protrusions 302 may have a groove structure 302a. It should be noted that the second protrusions 302 in the organic supporting layer 300 have an upper surface and a lower surface parallel to the direction of the substrate 100, and the sidewalls of the second protrusions 302 may be located between the upper surface and the lower surface and connected to the upper surface and the lower surface respectively. In the present application, since the groove structure 302a is provided on the sidewalls of the second protrusions 302 in the organic supporting layer 300. Therefore, when the light-emitting layer 500 is formed in the non-pixel area 100b of the display panel by an evaporation process, the light-emitting layer 500 will experience a disconnection phenomenon in the area where the second protrusions 302 are located. That is, the portion of the light emitting layer 500 located on the second protrusion 302 is disconnected from other portions of the light emitting layer 500 .

[0074] The first electrode layer 400 in the display panel 000 can be located on the side of the organic support layer 300 facing away from the substrate 100. The first electrode layer 400 may include: a first electrode 401 located at least within the pixel region 100a of the display panel 000 and distributed on a plurality of first protrusions 301, and an auxiliary electrode 402 located in the non-pixel region 100b and separated from the first electrode 401. A portion of the auxiliary electrode 402 may be located within the groove structure 302a in the second protrusion 302, and the second electrode layer 600 may extend into the groove structure 302a to be electrically connected to the auxiliary electrode 402. It should be noted that in an optional implementation, the first electrode layer 400 may be an anode layer in the display panel, and the second electrode layer 600 may be a cathode layer in the display panel.

[0075] In an embodiment of the present application, an organic support layer 300 is provided on the side of the pixel defining layer 200 facing the substrate 100. A plurality of first protrusions 301 are provided on the portion of the organic support layer 300 located within the pixel region 100a of the display panel 000. These first protrusions 301 are arranged in an array to form a microlens structure. Thus, when the display panel 000 emits light, the microlens structure can effectively improve light extraction efficiency. Furthermore, a plurality of second protrusions 302 are provided on the portion of the organic support layer 300 located within the non-pixel region 100b of the display panel 000. When the light-emitting layer 500 is formed within the non-pixel region 100b of the display panel, the light-emitting layer 500 may experience disconnection within the region where the second protrusions 302 are located. Furthermore, a groove structure 302a is provided on the sidewall of each second protrusion 302. Therefore, a portion of the auxiliary electrode 402 can be located within the groove structure 302a, while a portion of the second electrode layer 600 can extend into the groove structure 302a and electrically connect to the auxiliary electrode 402. In this way, effective overlap between the second electrode layer 600 and the auxiliary electrode 402 in the first electrode layer 400 can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer 600 and the auxiliary electrode 402, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer 600 and the auxiliary electrode 402, so that the display effect of the display panel 000 is better.

[0076] It should be noted that a plurality of first protrusions are formed in the portion of the organic support layer located in the pixel area. Such a plurality of protrusion microstructures can change the angle of the emitted light reflected back at the interface and then emit it again, thereby allowing the emitted light to be taken out while undergoing multiple reflections, significantly increasing the light extraction rate.

[0077] In summary, an embodiment of the present application provides a display panel, which may include: a substrate, a pixel defining layer located on the substrate, an organic support layer located on the side of the pixel defining layer facing the substrate, and a first electrode layer, a light-emitting layer, and a second electrode layer arranged in sequence in a direction perpendicular to and away from the substrate. By arranging an organic support layer on the side of the pixel defining layer facing the substrate, a portion of the organic support layer located in the pixel area of ​​the display panel is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged in an array to form a microlens structure. In this way, when the display panel emits light, the light extraction rate can be effectively improved by the microlens structure. In addition, a portion of the organic support layer located in the non-pixel area of ​​the display panel is provided with a plurality of second protrusions. Since when the light-emitting layer is formed in the non-pixel area of ​​the display panel, the light-emitting layer will be disconnected in the area where the second protrusion is located, and each second protrusion has a groove structure on its sidewall. Therefore, a portion of the auxiliary electrode can be located in the groove structure, and a portion of the second electrode layer can extend into the groove structure and be electrically connected to this portion of the auxiliary electrode. In this way, effective overlap between the second electrode layer and the auxiliary electrode in the first electrode layer can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer and the auxiliary electrode, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer and the auxiliary electrode, so that the display effect of the display panel is better.

[0078] Alternatively, please refer to FIG. 2 , which is a schematic diagram of the distribution of first and second protrusions in an organic support layer provided in an embodiment of the present application. The plurality of second protrusions 302 in the organic support layer 300 can be divided into at least one group of second protrusions A. A group of second protrusions A can include a plurality of arrayed second protrusions 302, each of which has a circular orthographic projection on the substrate 100. In this case, by providing a plurality of arrayed second protrusions 302 in a group of second protrusions A, the orthographic projection of each second protrusion 302 on the substrate 100 can be circular. In this way, the arrangement rate of the second protrusions in a group of second protrusions A can be increased per unit area in the organic support layer 300, and the second electrode layer 600 can be overlapped with the auxiliary electrode 402 within the groove structures 302a of the plurality of second protrusions 302 in the group of second protrusions A, thereby further increasing the overlap area between the second electrode layer 600 and the auxiliary electrode 402, reducing contact resistance, and improving electrical connection performance. When the display panel is a transparent top-emitting panel, the microstructure formed by the arrangement of multiple second protrusion arrays ensures the overlapping area between the second electrode layer and the auxiliary electrode, without the need to set up more auxiliary cathode connection holes as in the related art, thereby increasing the transparent area and further improving the transmittance.

[0079] In an embodiment of the present application, please refer to Figure 3, which is a top view of a set of second protrusions provided in an embodiment of the present application. For two adjacent second protrusions 302 in a set of second protrusions A in an organic supporting layer 300, a portion of one second protrusion 302 is reused with a portion of the other second protrusion 302. For example, for a set of second protrusions A in an organic supporting layer 300, the set of second protrusions A may include: second protrusion A1, second protrusion B1, second protrusion B2, second protrusion B3, second protrusion B4, second protrusion B5, and second protrusion B6. A portion of second protrusion A1 may be reused with a portion of at least one of second protrusions B1, second protrusion B2, second protrusion B3, second protrusion B4, second protrusion B5, and second protrusion B6. Between two adjacent second protrusions among second protrusions B1, B2, B3, B4, B5, and B6, a portion of one second protrusion can be reused with a portion of another second protrusion. It should be noted that the grid-filled portion in FIG3 is the portion removed by the dry etching process during the formation of the plurality of second protrusions on the organic support layer.

[0080] Optionally, as shown in FIG3 , a group of second protrusions A in the organic support layer 300 may include: a first annular protrusion and a plurality of second annular protrusions, wherein the plurality of second annular protrusions may be distributed around the periphery of the first annular protrusion. The shape enclosed by the orthographic projection of the first annular protrusion on the substrate may be a first polygon, and the shape enclosed by the orthographic projection of the second annular protrusion on the substrate may be a second polygon, and the number of sides of the first polygon may be greater than the number of sides of the second polygon. In the present application, the first annular protrusion may be a first annular protrusion A1′, and the plurality of second annular protrusions may be: a second annular protrusion B1′, a second annular protrusion B2′, a second annular protrusion B3′, a second annular protrusion B4′, a second annular protrusion B5′, and a second annular protrusion B6′. The second annular protrusion B1′, the second annular protrusion B2′, the second annular protrusion B3′, the second annular protrusion B4′, the second annular protrusion B5′, and the second annular protrusion B6′ may be distributed around the periphery of the first annular protrusion A1′. For example, when the shape formed by the orthographic projection of the first annular protrusion A1' on the substrate is a first polygon, the first polygon may be a hexagon; when the shape formed by the orthographic projection of the second annular protrusion (for example, the second annular protrusion B1', the second annular protrusion B2', the second annular protrusion B3', the second annular protrusion B4', the second annular protrusion B5', and the second annular protrusion B6') on the substrate 100 is a second polygon, the second polygon may be a trapezoid. For example, the first polygon may be a regular hexagon, and the second polygon may be an isosceles trapezoid. The isosceles trapezoid may have a first edge and a second edge that are oppositely arranged, and two third edges that are oppositely arranged, the length of the first edge is less than the length of the second edge, and the first edge is equal to the length of one of the edges in the regular hexagon and is arranged in parallel. As shown in FIG3 , the distance a1 between the first and second edges opposite to each other in the isosceles trapezoid may range from 2.6 μm to 2.8 μm; the distance b1 between two edges opposite to each other in the regular hexagon may range from 3.6 μm to 3.8 μm.

[0081] In an embodiment of the present application, please refer to Figure 4, which is a top view of a plurality of groups of second protrusions provided in an embodiment of the present application. When the plurality of second protrusions 302 in the organic support layer 300 are divided into a plurality of groups of second protrusions, for two adjacent groups of second protrusions, a portion of the second annular protrusion in one group of second protrusions can be reused with a portion of the second annular protrusion in the other group of second protrusions. For example, as shown in the figure, the plurality of second protrusions 302 can be divided into: a first group of second protrusions and a plurality of second groups of second protrusions, and the plurality of second groups of second protrusions can be distributed around the periphery of a first group of second protrusions. For example, the plurality of groups of second protrusions can include: a first group of second protrusions Z1, a second group of second protrusions Z2, a second group of second protrusions Z3, a second group of second protrusions Z4, a second group of second protrusions Z5, a second group of second protrusions Z6, and a second group of second protrusions Z7. A portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z2; a portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z3; a portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z4; a portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z5; a portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z6; a portion of the second annular protrusion in the first group of second protrusions Z1 can be reused with a portion of the second annular protrusion in the second group of second protrusions Z7.

[0082] Alternatively, please refer to FIG5 , which is a cross-sectional view of a second protrusion provided in an embodiment of the present application. The thickness d of the second protrusion 302 in the organic supporting layer 300 first gradually decreases and then gradually increases in a direction perpendicular to and away from the substrate 100. In the present application, the thickness d of the second protrusion 302 in the organic supporting layer 300 may be the width in a direction parallel to the substrate 100. Thus, when the thickness d of the second protrusion 302 in the organic supporting layer 300 first gradually decreases and then gradually increases in a direction perpendicular to and away from the substrate 100, a groove structure 302a can be formed on the sidewall of the second protrusion 302, and the bottom surface of the groove structure 302a can be an arc-shaped concave surface. It should be noted that in other possible implementations, in a direction perpendicular to the substrate 100, the groove structure 302a provided on the sidewall of the second protrusion 302 in the organic supporting layer 300 may include: a bottom surface (not shown in the figure), and an annular side plane (not shown in the figure) distributed around the bottom surface, and the extension direction of the annular side plane may intersect with the bottom surface.

[0083] In an embodiment of the present application, please refer to FIG6 , which is a schematic diagram of the film structure of another display panel provided in an embodiment of the present application. The light-emitting layer 500 in the display panel 000 may include: a first sub-light-emitting layer 501, a second sub-light-emitting layer 502, and a third sub-light-emitting layer 503. The first sub-light-emitting layer 501 may be located in the pixel region 100a of the display panel 000 and distributed on the first electrode 401. The second sub-light-emitting layer 502 and the third sub-light-emitting layer 503 may both be located in the non-pixel region 100b of the display panel 000, and the second sub-light-emitting layer 502 may be distributed on the second protrusion 302 in the organic supporting layer 300. The orthographic projection of the third sub-light-emitting layer 503 on the substrate 100 may not overlap with the orthographic projection of the second protrusion 302 in the organic supporting layer 300 on the substrate 100. The second sub-light-emitting layer 502 in the light-emitting layer 500 may be separated from the third sub-light-emitting layer 503. In this case, the first sub-light-emitting layer 501 in the light-emitting layer 500 is disposed within the pixel region 100a and distributed on the first electrode 401, so that the first sub-light-emitting layer 501 can emit light normally after a potential is applied. During the process of forming the second sub-light-emitting layer 502 and the third sub-light-emitting layer 503 in the light-emitting layer 500 through the evaporation process, they are disconnected at the area where the second protrusion 302 is located to facilitate the subsequent overlap of the second electrode layer 600 and the auxiliary electrode 402.

[0084] Optionally, as shown in FIG6 , the second electrode layer 600 in the display panel 000 may include: a first portion 601 located within the pixel region 100a of the display panel 000; a second portion 602 located in the non-pixel region 100b of the display panel 000 and distributed over the second sub-light-emitting layer 502; and a third portion 603 for connecting the first portion 601 and the second portion 602 of the second electrode layer 600. A portion of the third portion 603 of the second electrode layer 600 can extend into the groove structure 302a of the second protrusion 302 and overlap with the auxiliary electrode 402. In this case, by disposing the first portion 601 of the second electrode layer 600 within the pixel region 100a, the first portion 601 of the second electrode layer 600 can apply a potential to the first sub-light-emitting layer 501 of the light-emitting layer 500. The third portion 603 of the second electrode layer 600 can overlap with the auxiliary electrode 402. In the present application, the first electrode 401 in the first electrode layer 400, the first sub-light-emitting layer 501, and the first portion 601 in the second electrode layer 600 can constitute a light-emitting device. It should be noted that the display panel 000 in the embodiment of the present application also has multiple light-emitting devices, and these multiple light-emitting devices can correspond one-to-one to multiple pixel regions, and each light-emitting device can be located in a corresponding pixel region.

[0085] For example, the light-emitting device may be an OLED light-emitting device, and the OLED light-emitting device may be a top-emitting light-emitting device. In this case, the first electrode 401 in the light-emitting device is an anode layer having a reflective property, and the second electrode layer 600 in the light-emitting device may be a thin and transparent cathode layer. Since the thin and transparent cathode layer has a high resistance value and a serious voltage drop, the second electrode layer 600 needs to be overlapped with the auxiliary electrode 402 with a smaller resistance value. The auxiliary electrode 402 can make the voltage at each position in the second electrode layer 600 the same, thereby improving the display effect of the display panel 000. For example, the material of the second electrode layer 600 may include: indium tin oxide (English: Indium Tin Oxide; abbreviated: ITO) or indium zinc oxide (English: Indium Zinc Oxide; abbreviated: IZO).

[0086] In an embodiment of the present application, as shown in FIG6 , the side of the first protrusions 301 in the organic supporting layer 300 facing away from the substrate 100 can be a first arcuate convex surface t1. In this case, by setting the side of each first protrusion 301 facing away from the substrate 100 as the first arcuate convex surface t1, the microlens structure formed by the multiple first protrusions 301 can further improve the light extraction efficiency. For example, the side of the first protrusions 301 in the organic supporting layer 300 facing away from the substrate 100 can be a first arcuate convex surface.

[0087] Optionally, as shown in Figure 2, the multiple first protrusions 301 in the organic supporting layer 300 can be divided into at least one group of first protrusions C. Each group of first protrusions C can include multiple first protrusions 301 arranged in an array, and the orthographic projection of each first protrusion 301 on the substrate 100 can be a polygon. In this application, please refer to Figure 7, which is a top view of a group of first protrusions provided in an embodiment of the present application. A group of first protrusions C can include: a central protrusion and multiple edge protrusions, and the multiple edge protrusions can be distributed around the periphery of the central protrusion. A first spacing d1 can be defined between the central protrusion and each edge protrusion, and a second spacing d2 can be defined between two adjacent edge protrusions. The first spacing d1 and the second spacing d2 can be equal. For example, a group of first protrusions can include: a central protrusion C1, an edge protrusion C2, an edge protrusion C3, an edge protrusion C4, an edge protrusion C5, an edge protrusion C6, and an edge protrusion C7. A first spacing may be provided between the middle protrusion C1 and the edge protrusion C2, a first spacing may be provided between the middle protrusion C1 and the edge protrusion C3, a first spacing may be provided between the middle protrusion C1 and the edge protrusion C4, a first spacing may be provided between the middle protrusion C1 and the edge protrusion C5, a first spacing may be provided between the middle protrusion C1 and the edge protrusion C6, and a first spacing may be provided between the middle protrusion C1 and the edge protrusion C7. A second spacing may be provided between the edge protrusion C2 and the edge protrusion C3, a second spacing may be provided between the edge protrusion C3 and the edge protrusion C4, a second spacing may be provided between the edge protrusion C4 and the edge protrusion C5, a second spacing may be provided between the edge protrusion C5 and the edge protrusion C6, a second spacing may be provided between the edge protrusion C6 and the edge protrusion C7, and a second spacing may be provided between the edge protrusion C7 and the edge protrusion C2.

[0088] In an embodiment of the present application, as shown in Figure 7, the number of sides of the orthographic projection of the middle protrusion in a group of first protrusions on the substrate can be equal to the number of sides of the orthographic projection of the edge protrusions in this group of first protrusions on the substrate. That is, when the orthographic projection of the middle protrusion in a group of first protrusions on the substrate is a third polygon, and the orthographic projection of the edge protrusion in a group of first protrusions on the substrate is a fourth polygon, the number of sides of the third polygon can be equal to the number of sides of the fourth polygon. For example, the third polygon presented by the orthographic projection of the middle protrusion on the substrate can be a hexagon, and the fourth polygon presented by the orthographic projection of the edge protrusion on the substrate can also be a hexagon. For example, the orthographic projection of the middle protrusion on the substrate can be a regular hexagon, and when the orthographic projection of each edge protrusion on the substrate is a hexagon, the shapes of the hexagons can be the same. In this application, a hexagonal projection of an edge protrusion on a substrate is used as an example for schematic illustration: the hexagon has two opposing first edges, two opposing second edges, and two opposing third edges. A first edge can be located between a second edge and a third edge, and the length of the first edge of the hexagon is equal to the length of an edge of the regular hexagon and they are arranged parallel. As shown in Figure 7, the distance b2 between the two opposing edges can range from 2.6 microns to 2.8 microns; the distance a2 between the two opposing sides of the regular hexagon can range from 3.6 microns to 3.8 microns; and the first spacing d1 and the second spacing d2 can range from 0.7 microns to 2 microns.

[0089] Optionally, as shown in FIG6 , a first electrode 401 in the first electrode layer 400 may have a plurality of second curved convex surfaces t2 that match the plurality of first curved convex surfaces t1 on a one-to-one basis on a side of the first electrode 401 facing away from the first protrusion 301 in the organic support layer 300. In the present application, the shape of the second curved convex surfaces t2 in the first electrode 401 may be the same as the shape of the first curved convex surface t1 of the first protrusion 301 in the organic support layer 300.

[0090] In the embodiment of the present application, please refer to Figures 6 and 8. Figure 8 is a top view of a display panel provided in the embodiment of the present application. The pixel defining layer 200 in the display panel 000 can also be used to define multiple transparent areas 100c on the substrate 100. The organic support layer 300 can have multiple hollow grooves 303 corresponding one-to-one to the multiple transparent areas 100c in the display panel 000, and the orthographic projection of the hollow grooves 303 in the organic support layer 300 on the substrate 100 can be located within the orthographic projection of the transparent area 100c in the display panel 000 on the substrate 100. In this case, the pixel defining layer 200 in the display panel 000 can define multiple transparent areas 100c on the substrate 100, and the hollow grooves 303 are opened at positions corresponding to the transparent areas 100c in the organic support layer 300, that is, the organic support layer 300 can be omitted from the transparent areas 100c in the display panel 000, forming transparent areas with better transparency. It should be noted that, in other possible implementations, please refer to Figure 9, which is a top view of another display panel provided in an embodiment of the present application. This display panel does not have transparent areas on either side, and a plurality of second protrusions are provided on the organic support layer in the non-pixel area of ​​the display panel. The arrangement of the auxiliary electrode, light-emitting layer, second electrode layer, and the plurality of second protrusions can be referred to the above description and will not be repeated here.

[0091] Optionally, as shown in FIG6 , the substrate 100 in the display panel 000 may include a pixel driving circuit 100 d electrically connected to the first electrode 401, and a cathode signal line 100 e electrically connected to the auxiliary electrode 402. In this case, the pixel driving circuit 100 d may be used to apply a driving voltage to the first electrode 401, and the cathode signal line 100 e may be used to apply a cathode voltage to the second electrode layer 600 through the auxiliary electrode 402. For example, the cathode voltage may be a voltage with a voltage value of 0.

[0092] For example, as shown in FIG6 , the substrate 100 may include: a substrate 101, and a light shielding layer 102, a buffer layer 103, an active layer pattern 104, a gate insulating layer 105, a first conductive pattern 106, an interlayer dielectric layer 107, and a second conductive pattern 108, stacked on the substrate 101 in a direction perpendicular to and away from the substrate 101. The light shielding layer 102 is used to shield the active layer pattern 104, preventing the active layer pattern 104 from experiencing a voltage threshold shift when exposed to light. The buffer layer 103 is used to block ions in the substrate 101 from entering the active layer pattern 104, thereby preventing the ions from entering the active layer pattern 104 and affecting its performance.

[0093] The first conductive pattern 106 may include a gate electrode 1061 and a gate line (not shown) connected to the gate electrode 1061. The gate line is used to apply a gate voltage to the gate electrode 1061.

[0094] The second conductive pattern 108 may include a source electrode (not shown), a drain electrode 1081, a cathode signal line 100e, and a data line (not shown). The data line may be electrically connected to one of the source electrode 1081 and the drain electrode 1082, and the other of the source electrode 1081 and the drain electrode 1082 may be electrically connected to the first electrode 401. In this application, the drain electrode 1082 may be electrically connected to the first electrode 401, and the source electrode needs to be electrically connected to the data line.

[0095] It should be noted that the gate electrode 1061 , the active layer pattern 104 , the source electrode and the drain electrode 1081 and other structures can constitute the pixel driving circuit 100 d in the above embodiment.

[0096] In an embodiment of the present application, please refer to FIG10 , which is a schematic diagram of a membrane structure of another display panel provided in an embodiment of the present application. The display panel 000 also includes: a passivation protective layer 700 located between the substrate 100 and the organic support layer 300, and the passivation protective layer 700 may have a plurality of first vias 701. The portion of the organic support layer 300 located in the non-pixel area 100b of the display panel may have a plurality of second vias 304 that are connected one-to-one with the plurality of first vias 701 in the passivation protective layer 700. Among them, the first electrode 401 can be electrically connected to the pixel driving circuit in the substrate 100 through a portion of the first vias 701 and the second vias 304 that are interconnected; the auxiliary electrode 402 can be electrically connected to the cathode signal line 100e through another portion of the first vias 701 and the second vias 304 that are interconnected. In this case, the first electrode 401 in the first electrode layer 400 can be electrically connected to the pixel driving circuit in the substrate 100 through the first via 701 and the second via 304 that are interconnected, and the auxiliary electrode 402 in the first electrode layer 400 can be electrically connected to the cathode signal line in the substrate 100 through the first via 701 and the second via 304 that are interconnected.

[0097] In this application, the material of the organic support layer 300 in the display panel 000 may include polyamide fiber or resin. It should be noted that in other possible implementations, the material of the organic support layer may also be other organic materials, which is not limited in this embodiment of the application.

[0098] Optionally, as shown in FIG10 , the display panel 000 may further include an encapsulation layer 800 located on a side of the second electrode layer 600 facing away from the substrate 100. In this case, the encapsulation layer 800 is used to encapsulate the light-emitting devices within the display panel to isolate the light-emitting devices from the outside air and prevent the light-emitting layer 800 from being corroded by components such as moisture and oxygen in the air.

[0099] In summary, an embodiment of the present application provides a display panel, which may include: a substrate, a pixel defining layer located on the substrate, an organic support layer located on the side of the pixel defining layer facing the substrate, and a first electrode layer, a light-emitting layer, and a second electrode layer arranged in sequence in a direction perpendicular to and away from the substrate. By arranging an organic support layer on the side of the pixel defining layer facing the substrate, a portion of the organic support layer located in the pixel area of ​​the display panel is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged in an array to form a microlens structure. In this way, when the display panel emits light, the light extraction rate can be effectively improved by the microlens structure. In addition, a portion of the organic support layer located in the non-pixel area of ​​the display panel is provided with a plurality of second protrusions. Since when the light-emitting layer is formed in the non-pixel area of ​​the display panel, the light-emitting layer will be disconnected in the area where the second protrusion is located, and each second protrusion has a groove structure on its sidewall. Therefore, a portion of the auxiliary electrode can be located in the groove structure, and a portion of the second electrode layer can extend into the groove structure and be electrically connected to this portion of the auxiliary electrode. In this way, effective overlap between the second electrode layer and the auxiliary electrode in the first electrode layer can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer and the auxiliary electrode, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer and the auxiliary electrode, so that the display effect of the display panel is better.

[0100] The present application also provides a method for manufacturing a display panel, which can be used to manufacture the display panel shown in FIG1 . The method for manufacturing a display panel may include:

[0101] A pixel defining layer, an organic supporting layer, and a first electrode, a light-emitting layer and a second electrode layer are sequentially arranged in a direction perpendicular to and away from the substrate.

[0102] The organic supporting layer may be located on a side of the pixel defining layer facing the substrate, and the pixel defining layer may be used to define a plurality of pixel regions and a non-pixel region located outside the pixel regions on the substrate.

[0103] The portion of the organic supporting layer located in the pixel area may have a plurality of first protrusions, the portion of the organic supporting layer located in the non-pixel area may have a plurality of second protrusions, and a sidewall of each second protrusion may have a groove structure.

[0104] The first electrode layer can be located on the side of the organic supporting layer facing away from the substrate. The first electrode layer may include: a first electrode located at least in the pixel area and distributed on multiple first protrusions, and an auxiliary electrode located in the non-pixel area and separated from the first electrode. A portion of the auxiliary electrode can be located in the groove structure in the second protrusion, and the second electrode layer can extend into the groove structure in the second protrusion and be electrically connected to the auxiliary electrode.

[0105] In summary, the manufacturing method of the display panel provided by the embodiment of the present application may include: forming a pixel defining layer, an organic support layer, and a first electrode, a light-emitting layer, and a second electrode layer arranged in sequence in a direction perpendicular to and away from the substrate on a substrate. By arranging an organic support layer on the side of the pixel defining layer facing the substrate, a portion of the organic support layer located in the pixel area of ​​the display panel is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged in an array to form a microlens structure. In this way, when the display panel emits light, the light extraction rate can be effectively improved by the microlens structure. In addition, a portion of the organic support layer located in the non-pixel area of ​​the display panel is provided with a plurality of second protrusions. When the light-emitting layer is formed in the non-pixel area of ​​the display panel, the light-emitting layer will be disconnected in the area where the second protrusion is located, and each second protrusion has a groove structure on its sidewall. Therefore, a portion of the auxiliary electrode can be located in the groove structure, and a portion of the second electrode layer can extend into the groove structure and be electrically connected to this portion of the auxiliary electrode. In this way, effective overlap between the second electrode layer and the auxiliary electrode in the first electrode layer can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer and the auxiliary electrode, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer and the auxiliary electrode, so that the display effect of the display panel is better.

[0106] Please refer to FIG11, which is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application. The method for manufacturing a display panel is used to manufacture the display panel 000 shown in FIG6 or FIG10. The method for manufacturing a display panel may include the following steps:

[0107] S101. Provide a substrate having a pixel driving circuit and cathode signal lines.

[0108] In an embodiment of the present application, the substrate may have a pixel driving circuit and a cathode signal line. For example, please refer to Figure 12, which is a schematic diagram of a film layer structure of a substrate provided in an embodiment of the present application. The substrate 100 may include: a substrate 101, and a light shielding layer 102, a buffer layer 103, an active layer pattern 104, a gate insulating layer 105, a first conductive pattern 106, an interlayer dielectric layer 107, and a second conductive pattern 108 stacked on the substrate 101 in a direction perpendicular to and away from the substrate 101. Please refer to Figures 13, 14, 15, 16 and 17. Figure 13 is a top view of a light shielding layer provided in an embodiment of the present application, Figure 14 is a top view of an active layer pattern provided in an embodiment of the present application, Figure 15 is a top view of a gate insulating layer provided in an embodiment of the present application, Figure 16 is a top view of an interlayer dielectric layer provided in an embodiment of the present application, and Figure 17 is a top view of a second conductive pattern provided in an embodiment of the present application.

[0109] In the present application, providing a substrate having a pixel driving circuit and a cathode signal line may include the following processes:

[0110] First, a light shielding layer 102 is formed on a substrate 101 .

[0111] Afterwards, a buffer layer 103 is formed on the substrate 101 having the light shielding layer 102 formed thereon. Optionally, the material of the buffer layer 103 may include inorganic materials such as silicon nitride, silicon oxide, or silicon oxynitride.

[0112] Then, an active material thin film is formed on the substrate 101 with the buffer layer 103 formed thereon, and a patterning process is performed on the active material thin film to form an active layer pattern 104. Optionally, the material of the active layer pattern 104 may include semiconductor materials such as polysilicon, amorphous silicon or oxide semiconductor.

[0113] Next, a gate insulating film and a first conductive layer are formed on the substrate 101 having the active layer pattern 104 formed thereon. A patterning process is then performed on the first conductive layer to form a gate insulating layer 105 and a first conductive pattern 106. The first conductive pattern 106 may include a gate electrode 1061 and a gate line (not shown) connected to the gate electrode 1061. Optionally, the material of the first conductive pattern 106 may include a metal material such as aluminum, silver, molybdenum, or an alloy thereof.

[0114] Then, an interlayer dielectric film is formed on the substrate 101 having the first conductive pattern 106 formed thereon, and a patterning process is performed on the interlayer dielectric film to form an interlayer dielectric layer 107. Optionally, the material of the interlayer dielectric layer 107 may include silicon dioxide, silicon nitride, or a mixture of silicon dioxide and silicon nitride.

[0115] Next, a second conductive layer is formed on the substrate 101 having the interlayer dielectric layer 107 formed thereon, and a patterning process is performed on the second conductive layer to form a second conductive pattern 108. The second conductive pattern 108 may include a source electrode 1081, a drain electrode 1082, a cathode signal line 100e, and a data line (not shown). Optionally, the material of the second conductive pattern 108 may include a metal material such as aluminum, silver, molybdenum, or an alloy. The gate 1061, active layer pattern 104, source and drain electrodes 1081, and other structures can constitute the pixel region circuit 100d in the above-described embodiment.

[0116] It should be noted that the above process can form a substrate 100 having a pixel region circuit 100d and a cathode signal line 100e. It should also be noted that the one-time patterning process in the above embodiment may include: photoresist coating, exposure, development, etching and photoresist stripping.

[0117] S102, forming a passivation protection layer on the substrate.

[0118] In an embodiment of the present application, please refer to FIG. 18 , which is a schematic structural diagram of forming a passivation protection layer provided in an embodiment of the present application.

[0119] The material of the passivation protection layer includes silicon oxide, silicon nitride or silicon oxynitride.

[0120] For example, a passivation protection layer film may be formed on a substrate by evaporation, and a patterning process may be performed on the passivation protection layer film to obtain the passivation protection layer.

[0121] S103 , forming an organic support layer on the passivation protection layer.

[0122] In the embodiments of the present application, please refer to Figures 19 and 20. Figure 19 is a schematic diagram of a structure for forming an organic support layer according to an embodiment of the present application, and Figure 20 is a top view of an organic support layer according to an embodiment of the present application. It should be noted that the shaded area in Figure 20 may be a transparent area of ​​the display panel and not provided with an organic support layer. The remaining areas of the display panel may be provided with an organic support layer.

[0123] Materials of the organic support layer include: polyamide fiber or resin.

[0124] For example, an organic support film can be formed on the passivation protective layer by any of a variety of methods, such as deposition, coating, evaporation, and sputtering. A single patterning process can be performed on the organic support film to form multiple second via holes on the organic support layer. It should be noted that, corresponding to the multiple transparent areas in the display panel, hollow grooves corresponding to the multiple transparent areas can be simultaneously formed in this step.

[0125] Then, forming a photoresist film on the organic support film;

[0126] performing exposure and development processing on the photoresist film to obtain different photoresist patterns;

[0127] The organic support film is dry-etched to form an organic support layer with the photoresist pattern; for example, through this process step, a plurality of first protrusions can be formed in the portion of the organic support layer located in the pixel area, and a plurality of second protrusions can be formed in the portion of the organic support layer located in the non-pixel area.

[0128] Finally, the photoresist pattern is stripped.

[0129] S104 , forming a plurality of first via holes on the passivation protection layer.

[0130] Optionally, please refer to Figure 21, which is a schematic diagram of a structure for forming a first via provided in an embodiment of the present application. For example, a plurality of second vias on the passivation protective layer can be obtained by performing a patterning process on the passivation protective layer once, and the plurality of first vias are connected to the plurality of second vias on the organic support layer in a one-to-one correspondence. It should be noted that a plurality of first vias on the passivation protective layer can also be formed simultaneously in the process of patterning the organic support layer (forming a plurality of first protrusions and a plurality of second protrusions) in the above steps. In this way, it is only necessary to perform a single patterning process on the patterning of the organic support layer and the formation of a plurality of first vias on the passivation protective layer.

[0131] S105 , forming a first electrode layer on the organic supporting layer.

[0132] In an embodiment of the present application, please refer to Figures 22 and 23. Figure 22 is a schematic diagram of forming a first electrode layer on a substrate provided in an embodiment of the present application, and Figure 23 is a top view of a first electrode layer provided in an embodiment of the present application. The first electrode layer may include: a first electrode located at least in a pixel area, and an auxiliary electrode located in a non-pixel area and separated from the first electrode. The first electrode may be electrically connected to a pixel driving circuit in the substrate, and the auxiliary electrode may be electrically connected to a cathode signal line in the substrate.

[0133] For example, forming a first electrode layer on a substrate may include the following process: first, forming a first conductive film on the substrate, and then performing a single patterning process on the first conductive film to form the first electrode layer. The single patterning process may include: photoresist coating, exposure, development, etching, and photoresist stripping.

[0134] S106 , forming a pixel defining layer on the first electrode layer.

[0135] Optionally, the material of the pixel defining layer may include: at least one selected from polymers based on polymethyl methacrylate and polystyrene, polymers and derivatives based on phenol groups, acrylic-based polymers, paraxylene-based polymers, aromatic ether-based polymers, amide-based polymers, fluoride-based polymers, and vinyl alcohol-based polymers.

[0136] In the present application, please refer to Figures 24 and 25. Figure 24 is a schematic diagram of a pixel defining layer formed on a first electrode layer provided in an embodiment of the present application, and Figure 25 is a top view of a pixel defining layer provided in an embodiment of the present application. A pixel defining film can be formed on a substrate having a first electrode layer by any of a variety of methods such as deposition, coating and sputtering, and then a patterning process is performed on the pixel defining film to form a pixel defining layer. The single patterning process may include: photoresist coating, exposure, development, etching and photoresist stripping. It should be noted that a pixel defining layer is not provided in the shaded filled area (i.e., transparent area) in Figure 25.

[0137] The pixel defining layer is used to divide the substrate into a plurality of pixel regions and a non-pixel region located outside the pixel regions. At least a portion of the first electrode in the first electrode layer may be located within the pixel region, and the auxiliary electrode in the first electrode layer may be located within the non-pixel region.

[0138] S107 , forming a light-emitting layer on the pixel definition layer.

[0139] Optionally, the material of the light-emitting layer may include phosphorescent or fluorescent light-emitting materials.

[0140] In an embodiment of the present application, please refer to Figure 26, which is a schematic diagram of forming a light-emitting layer on a pixel defining layer according to an embodiment of the present application. The light-emitting layer can be formed on a substrate having a pixel defining layer formed thereon by an evaporation process.

[0141] In this application, because the sidewalls of the second protrusions in the organic support layer have grooves, when the light-emitting layer is formed on the area where the second protrusions are located in the organic support layer through an evaporation process, the light-emitting layer 400 may be disconnected in the area where the second protrusions are located. In other words, the portion of the light-emitting layer located on the second protrusions is disconnected from the rest of the light-emitting layer.

[0142] S108 , forming a second electrode layer (cathode layer) on the light-emitting layer.

[0143] In an embodiment of the present application, please refer to Figure 27, which is a schematic diagram of forming a second electrode layer on a light-emitting layer according to an embodiment of the present application. The second electrode layer can be formed on a substrate having a light-emitting layer formed thereon by a sputtering process. The second electrode layer may include: a first portion located in the pixel area, a second portion located in the non-pixel area and disposed on a second protrusion in the organic support layer, and a third portion for connecting the first portion and the second portion. A portion of the third portion can extend into a groove structure on the sidewall of the second protrusion to overlap with the auxiliary electrode.

[0144] In the present application, since the film layer formed by the sputtering process has good diffusivity, when the second electrode layer is formed by the sputtering process, the third portion of the second electrode layer can overlap with the auxiliary electrode.

[0145] Step S109: forming an encapsulation layer on the second electrode layer.

[0146] In the embodiment of the present application, after forming the encapsulation layer on the second electrode layer, the display panel shown in Figure 6 or Figure 10 can be obtained. For example, the encapsulation layer can be formed on the second electrode layer by deposition.

[0147] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the working principles and connection relationships of the various structures in the display panel described above can refer to the corresponding contents in the aforementioned embodiment of the display panel structure and will not be repeated here.

[0148] In summary, the manufacturing method of the display panel provided by the embodiment of the present application may include: forming a pixel defining layer, an organic support layer, and a first electrode, a light-emitting layer, and a second electrode layer arranged in sequence in a direction perpendicular to and away from the substrate on a substrate. By arranging an organic support layer on the side of the pixel defining layer facing the substrate, a portion of the organic support layer located in the pixel area of ​​the display panel is provided with a plurality of first protrusions, and the plurality of first protrusions are arranged in an array to form a microlens structure. In this way, when the display panel emits light, the light extraction rate can be effectively improved by the microlens structure. In addition, a portion of the organic support layer located in the non-pixel area of ​​the display panel is provided with a plurality of second protrusions. When the light-emitting layer is formed in the non-pixel area of ​​the display panel, the light-emitting layer will be disconnected in the area where the second protrusion is located, and each second protrusion has a groove structure on its sidewall. Therefore, a portion of the auxiliary electrode can be located in the groove structure, and a portion of the second electrode layer can extend into the groove structure and be electrically connected to this portion of the auxiliary electrode. In this way, effective overlap between the second electrode layer and the auxiliary electrode in the first electrode layer can be achieved, and the microstructure formed by multiple second protrusions can effectively increase the contact area between the second electrode layer and the auxiliary electrode, thereby reducing the contact impedance, and further effectively improving the electrical connection performance between the second electrode layer and the auxiliary electrode, so that the display effect of the display panel is better.

[0149] The present application also provides a display device, which can be any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigation system. The display device can include a power supply component and a display panel. The power supply component can be used to power the display panel, which can be any of the display panels listed above.

[0150] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0151] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0152] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A pixel defining layer located on the substrate, the pixel defining layer being used to define a plurality of pixel regions and a non-pixel region located outside the pixel regions on the substrate; an organic supporting layer located on a side of the pixel defining layer facing the substrate, wherein a portion of the organic supporting layer located in the pixel area has a plurality of first protrusions, and a portion of the organic supporting layer located in the non-pixel area has a plurality of second protrusions, and sidewalls of the second protrusions have groove structures; and, a first electrode layer, a light-emitting layer, and a second electrode layer sequentially arranged in a direction perpendicular to and away from the substrate, wherein the first electrode layer is located on a side of the organic supporting layer away from the substrate; Among them, the first electrode layer includes: a first electrode located at least in the pixel area and distributed on the multiple first protrusions, and an auxiliary electrode located in the non-pixel area and separated from the first electrode, a portion of the auxiliary electrode is located in the groove structure, and the second electrode layer can extend into the groove structure and be electrically connected to the auxiliary electrode.

2. The display panel according to claim 1, wherein: The plurality of second protrusions are divided into at least one group of second protrusions, each group of second protrusions includes a plurality of second protrusions arranged in an array, and the orthographic projection of the second protrusions on the substrate is in a ring shape.

3. The display panel according to claim 2, wherein: For two adjacent second protrusions in a set of second protrusions, a portion of one second protrusion is reused with a portion of the other second protrusion.

4. The display panel according to claim 3, wherein: A group of the second protrusions includes: a first annular protrusion and a plurality of second annular protrusions, wherein the plurality of second annular protrusions are distributed around the periphery of the first annular protrusion; The shape formed by the orthographic projection of the first annular protrusion on the substrate is a first polygon, and the shape formed by the orthographic projection of the second annular protrusion on the substrate is a second polygon; The number of sides of the first polygon is greater than the number of sides of the second polygon.

5. The display panel according to claim 4, wherein: When the plurality of second protrusions are divided into a plurality of groups of second protrusions, for two adjacent groups of second protrusions, a portion of the second annular protrusion in one group of second protrusions is reused with a portion of the second annular protrusion in the other group of second protrusions.

6. The display panel according to claim 2, wherein: The thickness of the second protrusion gradually decreases and then gradually increases in a direction perpendicular to and away from the substrate.

7. The display panel according to claim 1, wherein: The light-emitting layer includes: a first sub-light-emitting layer, a second sub-light-emitting layer and a third sub-light-emitting layer; The first sub-light emitting layer is located in the pixel area and distributed on the first electrode; the second sub-light emitting layer and the third sub-light emitting layer are both located in the non-pixel area, and the second sub-light emitting layer is distributed on the second protrusion, and the orthographic projection of the third sub-light emitting layer on the substrate does not overlap with the orthographic projection of the second protrusion on the substrate; Wherein, the second sub-light emitting layer is separated from the third sub-light emitting layer.

8. The display panel according to claim 7, wherein: The second electrode layer includes: a first part located in the pixel area, a second part located in the non-pixel area and distributed on the second sub-light-emitting layer, and a third part for connecting the first part and the second part, and a part of the third part can extend into the groove structure and overlap with the auxiliary electrode.

9. The display panel according to any one of claims 1 to 8, characterized in that: A surface of the first protrusion facing away from the substrate is a first arc-shaped convex surface.

10. The display panel according to claim 9, wherein: The plurality of first protrusions are divided into at least one group of first protrusions, each group of first protrusions comprising a plurality of first protrusions arranged in an array, and the orthographic projection of the first protrusions on the substrate is a polygon.

11. The display panel according to claim 10, wherein: A group of the first protrusions includes: a middle protrusion and a plurality of edge protrusions, wherein the plurality of edge protrusions are distributed around the periphery of the middle protrusion; There is a first distance between the middle protrusion and the edge protrusion, a second distance between two adjacent edge protrusions, and the first distance is equal to the second distance.

12. The display panel according to claim 11, wherein: The number of sides of the orthographic projection of the middle protrusion on the substrate is equal to the number of sides of the orthographic projection of the edge protrusion on the substrate.

13. The display panel according to claim 9, wherein: The first electrode has a side facing away from the first protrusion and has a plurality of second arc-shaped convex surfaces matched one-to-one with the plurality of first arc-shaped convex surfaces.

14. The display panel according to any one of claims 1-8 and 10-13, characterized in that: The pixel defining layer is also used to define multiple transparent areas on the substrate. The organic supporting layer has multiple hollow grooves corresponding to the multiple transparent areas one by one. The orthographic projections of the hollow grooves on the substrate are located within the orthographic projections of the transparent areas on the substrate.

15. The display panel according to any one of claims 1-8 and 10-13, characterized in that: The substrate includes a pixel driving circuit electrically connected to the first electrode, and a cathode signal line electrically connected to the auxiliary electrode.

16. The display panel according to claim 15, wherein: The display panel further includes: a passivation protection layer located between the substrate and the organic support layer, the passivation protection layer having a plurality of first via holes; A portion of the organic supporting layer located in the non-pixel area has a plurality of second via holes connected to the plurality of first via holes in a one-to-one correspondence; The first electrode is electrically connected to the substrate through a portion of the first via hole and the second via hole that are interconnected; the auxiliary electrode is electrically connected to the cathode signal line through another portion of the first via hole and the second via hole that are interconnected.

17. The display panel according to any one of claims 1-8 and 10-13, characterized in that: The material of the organic support layer includes: polyamide fiber or resin.

18. The display panel according to any one of claims 1-8, 10-13, characterized in that: The display panel further includes: an encapsulation layer located on a side of the second electrode layer facing away from the substrate.

19. A method for manufacturing a display panel, characterized in that: The method is used to prepare the display panel according to any one of claims 1 to 18, and the method comprises: forming a pixel defining layer, an organic support layer, and a first electrode layer, a light-emitting layer, and a second electrode layer sequentially arranged in a direction perpendicular to and away from the substrate on a substrate; In which, the organic support layer is located on the side of the pixel definition layer facing the substrate, and the pixel definition layer is used to define multiple pixel areas and non-pixel areas located outside the pixel areas on the substrate; the portion of the organic support layer located in the pixel area has multiple first protrusions, and the portion of the organic support layer located in the non-pixel area has multiple second protrusions, and the sidewalls of the second protrusions have a groove structure; the first electrode layer is located on the side of the organic support layer away from the substrate, and the first electrode layer includes: a first electrode at least located in the pixel area and distributed on the multiple first protrusions, and an auxiliary electrode located in the non-pixel area and separated from the first electrode, a portion of the auxiliary electrode is located in the groove structure, and the second electrode layer can extend into the groove structure and be electrically connected to the auxiliary electrode.

20. A display device, characterized in that: include: A power supply component and a display panel, wherein the power supply component is used to supply power to the display panel, and the display panel is the display panel according to any one of claims 1 to 18.

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