Display panel

Abstract

The invention provides a display panel, the display panel comprises an array substrate, an organic insulating layer, an anode, a pixel definition layer and a light emitting layer, the organic insulating layer is arranged on the array substrate, the organic insulating layer comprises a plurality of first protruding parts, a groove is arranged between the adjacent first protruding parts, the anode is arranged in the groove, the pixel definition layer is arranged on the pixel definition layer, and the light emitting layer is arranged on the pixel definition layer. The organic insulating layer is arranged on the substrate, the pixel defining layer is arranged on the organic insulating layer and comprises a plurality of second protruding parts, the second protruding parts are arranged on the outer layers of the first protruding parts, the light-emitting layer is arranged on the anode, the first protruding parts and the grooves are formed in the organic insulating layer, and the second protruding parts are formed in the pixel defining layer. The second protruding parts are arranged on the outer layers of the first protruding parts, so that the height of the interval between the adjacent grooves can be increased, the amount of ink capable of being contained in the grooves is increased, ink is prevented from overflowing from the grooves in the ink-jet printing process, and therefore the risk of color mixing can be reduced.

Description

Technical Field

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

[0002] Organic Light Emitting Diodes (OLED) display technology has many advantages such as self-luminescence, low driving voltage, high luminous efficiency, short response time, high clarity and contrast, wide viewing angle, wide operating temperature range, flexible display and large-area full-color display, etc. It is recognized by the industry as the display technology with the most development potential. At present, the main methods for preparing organic light-emitting diode display panels are evaporation and inkjet printing. The technology of preparing large, medium and small-sized organic light-emitting diode display panels by evaporation technology is quite mature compared with inkjet printing technology and has been used in commercial production, but the material utilization rate of evaporation technology is low and it is difficult to use it to prepare high-resolution display panels. The working principle of inkjet printing technology is to eject ink from a tiny nozzle under the control of a computer program and land it at a specified position on the substrate, and finally form a pre-designed pattern. The material utilization rate of this process is higher than that of evaporation technology, and the process cycle time can be reduced by increasing the number of nozzles, which is suitable for preparing large-sized organic light-emitting diode display panels. At the same time, the inkjet printing process does not require the establishment of a vacuum cavity, and the manufacturing cost is lower.

[0003] Generally, when using inkjet printing to make an organic light-emitting diode display panel, it is necessary to first form a pixel opening on the pixel definition layer to define the ink film forming area. During inkjet printing, the pixel opening will be filled with the specified ink. If the amount of ink filled is too much, the ink will overflow from the pixel opening and mix with the ink in the adjacent pixel opening, causing the color of the pixel to shift and mix.

[0004] Therefore, it is necessary to provide a display panel to improve this defect. Summary of the invention

[0005] The embodiments of the present application provide a display panel that can reduce the risk of color mixing.

[0006] In order to achieve the above object, according to a first aspect of the present application, a display panel is provided, comprising:

[0007] An array substrate;

[0008] An organic insulating layer, disposed on the array substrate, the organic insulating layer comprising a plurality of first protrusions, and grooves are disposed between adjacent first protrusions;

[0009] an anode, disposed in the groove;

[0010] a pixel definition layer, disposed on the organic insulating layer, the pixel definition layer comprising a plurality of second protrusions, the second protrusions being disposed on an outer layer of the first protrusions; and

[0011] The light-emitting layer is disposed on the anode.

[0012] Optionally, the anode includes a main body and an inclined portion, the inclined portion is connected to the main body and is arranged at an angle with the main body, the main body is arranged at the bottom of the groove, and the inclined portion is arranged on the side wall of the first protrusion.

[0013] Optionally, the second protrusion is disposed on the first protrusion and a portion of the anode, and the inclined portion of the anode is disposed between a side wall of the first protrusion and a side wall of the second protrusion.

[0014] Optionally, a plurality of the anodes are arranged in rows at intervals along a first direction, and a plurality of the anodes are arranged in columns at intervals along a second direction, and the first direction is different from the second direction;

[0015] The first protrusions are extended along the second direction, and are disposed on both sides of each column of the anodes.

[0016] Optionally, along a film thickness direction of the organic insulating layer, a height of the inclined portion is smaller than a height of the first protruding portion.

[0017] Optionally, the second protrusion includes a first sub-protrusion, the first sub-protrusion is extended along the second direction, and the first sub-protrusion is arranged on both sides of each column of the anodes;

[0018] The first sub-protrusion is arranged on the outer layer of the first protrusion, and the inclined portion is arranged between the side wall of the first protrusion and the side wall of the first sub-protrusion.

[0019] Optionally, the second protrusion includes a plurality of second sub-protrusions, the second sub-protrusions are extended along the first direction, and the second sub-protrusions are arranged between any two adjacent rows of anodes;

[0020] The second sub-protrusion is arranged on the outer layer of the first protrusion, the inclined portion is arranged between the side wall of the first protrusion and the side wall of the second sub-protrusion, and part of the first sub-protrusion is arranged on the outer layer of the second sub-protrusion.

[0021] Optionally, the pixel definition layer further includes a plurality of spacers, the spacers are arranged in the grooves, and the spacers are continuously arranged with the second sub-convex portions;

[0022] The spacer is disposed between any two adjacent rows of the anodes, and along the film thickness direction of the pixel definition layer, the spacer covers ends of the two adjacent rows of the anodes that are close to each other.

[0023] Optionally, the organic insulating layer includes:

[0024] A first organic insulating layer is disposed on the array substrate;

[0025] a second organic insulating layer, disposed on the first organic insulating layer;

[0026] The second organic insulating layer includes the first protrusion and the groove, and along the film thickness direction of the second organic insulating layer, the depth of the groove is the same as the thickness of the second organic insulating layer.

[0027] Optionally, the organic insulating layer includes:

[0028] A first organic insulating layer is disposed on the array substrate;

[0029] a second organic insulating layer, disposed on the first organic insulating layer;

[0030] The second organic insulating layer includes a flat portion, the first protruding portion and the groove, the flat portion is arranged on the first organic insulating layer, the first protruding portion is arranged on the flat portion, and along the film thickness direction of the second organic insulating layer, the depth of the groove is less than the thickness of the second organic insulating layer.

[0031] In the display panel of the embodiment of the present application, by forming a plurality of first protrusions and grooves in the organic insulating layer and forming a plurality of second protrusions in the pixel definition layer, and arranging the second protrusions on the outer layer of the first protrusions, the height of the interval between adjacent grooves can be increased, thereby increasing the amount of ink that the grooves can accommodate, avoiding ink overflow from the grooves during inkjet printing, and thus reducing the risk of color mixing.

[0032] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0034] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0035] Figure 1 A schematic diagram of the film layer structure of a display panel provided in an embodiment of the present application;

[0036] Figure 2 A partial top view of a display panel provided in an embodiment of the present application;

[0037] Figure 3 A cross-sectional view of a display panel along the AA' direction provided in an embodiment of the present application;

[0038] Figure 4 A cross-sectional view of a display panel along the BB' direction provided by an embodiment of the present application;

[0039] Figure 5 A cross-sectional view of a display panel along the CC' direction provided in an embodiment of the present application;

[0040] Figure 6 A cross-sectional view of a display panel along the DD' direction provided by an embodiment of the present application;

[0041] Figure 7 A schematic diagram of an organic insulating layer in a display panel provided in an embodiment of the present application;

[0042] Figure 8 A schematic diagram of an organic insulating layer in another display panel provided in an embodiment of the present application;

[0043] Fig. 9 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] An embodiment of the present application provides a display panel, which includes an array substrate, an organic insulating layer, an anode, a pixel definition layer and a light-emitting layer. The organic insulating layer is arranged on the array substrate, the organic insulating layer includes a plurality of first protrusions, grooves are arranged between adjacent first protrusions, the anode is arranged in the grooves, the pixel definition layer is arranged on the organic insulating layer, the pixel definition layer includes a plurality of second protrusions, the second protrusions are arranged on the outer layer of the first protrusions, and the light-emitting layer is arranged on the anode.

[0046] In an embodiment of the present application, by forming a plurality of first protrusions and grooves on an organic insulating layer and forming a plurality of second protrusions on a pixel definition layer, and arranging the second protrusions on the outer layer of the first protrusions, the height of the interval between adjacent grooves can be increased, thereby increasing the amount of ink that the grooves can accommodate, avoiding ink overflowing from the grooves during inkjet printing, and thereby reducing the risk of color mixing.

[0047] See also Figure 1 , Figure 1 The schematic diagram of the film structure of the display panel provided in the embodiment of the present application, the display panel includes an array substrate 1, an organic insulating layer 2, an anode 3, a pixel definition layer 4 and a light-emitting layer 5, the organic insulating layer 2 is arranged on the array substrate 1, the organic insulating layer 2 includes a plurality of first protrusions 221, and grooves 222 are arranged between adjacent first protrusions 221. The anode 3 is arranged in the groove 222, the pixel definition layer 4 is arranged on the organic insulating layer 2, the pixel definition layer 4 includes a plurality of second protrusions 40, the second protrusions 40 are arranged on the outer layer of the first protrusions 221, and the light-emitting layer 5 is arranged on the anode 3.

[0048] In an embodiment of the present application, a plurality of first protrusions 221 and grooves 222 are formed on the organic insulating layer 2, and a plurality of second protrusions 40 are formed on the pixel definition layer 4, and the second protrusions 40 are arranged on the outer layer of the first protrusions 221. In this way, the height of the interval between adjacent grooves 222 can be increased, thereby increasing the amount of ink that the grooves 222 can accommodate, avoiding ink overflowing from the grooves 222 during inkjet printing, thereby reducing the risk of color mixing of ink in adjacent grooves 222.

[0049] In an embodiment of the present application, the pixel definition layer 4 is hydrophobic and oleophobic, which not only allows the ink sprayed on the pixel definition layer 4 to flow directly into the groove 222 along the side wall of the second protrusion 40 to prevent the ink from accumulating on the second protrusion 40, but also prevents the ink in the groove 222 from overflowing along the side wall of the second protrusion 40, thereby further reducing the risk of color mixing.

[0050] In some embodiments, see Figure 1 The array substrate 1 includes a substrate 11 and a driving circuit layer 12, and the driving circuit layer 12 is arranged on the substrate 11. The driving circuit layer 12 includes a barrier layer 121, an active layer 122, a first gate insulating layer 123, a first gate 124, a second gate insulating layer 125, a second gate 126, an interlayer dielectric layer 127, a first source-drain electrode layer 128, a passivation layer 129, a planar layer 131, and a second source-drain electrode layer 132, which are sequentially stacked on the substrate 11.

[0051] In practical applications, the film structure of the array substrate 1 is not limited to Figure 1 The film layer structure of the array substrate 1 shown in the figure can be replaced by an array substrate in a known display panel to achieve the same or similar function.

[0052] In some embodiments, see Figure 1 The anode 3 includes a main body 31 and an inclined portion 32 . The inclined portion 32 is connected to the main body 31 and is arranged at an angle with the main body 31 . The main body 31 is arranged at the bottom of the groove 222 , and the inclined portion 32 is arranged on the side wall of the first protrusion 221 .

[0053] It should be noted that after the anode 3 is formed on the organic insulating layer 2, the organic insulating layer 2 is first formed on the array substrate 1, and then the organic insulating layer 2 is etched to form a plurality of first protrusions 221 and grooves 222 located between the plurality of adjacent first protrusions 221, and then the anode 3 is deposited and etched on the organic insulating layer 2. To ensure that the anode 3 can cover the bottom of the groove 222, it is necessary to extend the anode 3 to the side wall of the first protrusion 221, thereby forming an inclined portion 32 located on the side wall of the first protrusion 221, and the main body 31 and the inclined portion 32 are continuously arranged, and the main body 31 and the inclined portion 32 are an integrated structure.

[0054] In some embodiments, see Figure 1 The flat layer 131 is provided with a via hole, and the main body 31 of the anode 3 is electrically connected to the second source-drain electrode layer 132 through the via hole on the flat layer 131 .

[0055] In some embodiments, see Figure 1 The cross-sectional shape of the groove 222 is an inverted trapezoid, and the inclined portion 32 and the main body portion 31 are arranged at an obtuse angle.

[0056] In some embodiments, the inclined portion 32 is sandwiched between the side wall of the first protruding portion 221 and the side wall of the second protruding portion 40 .

[0057] See also Figure 1 After the pixel definition layer 4 is formed on the anode 3, the inclined portion 32 of the anode 3 is formed on the side wall of the first protrusion 221. After the pixel definition layer 4 is formed, the second protrusion 40 of the pixel definition layer 4 is not only arranged on the outer layer of the first protrusion 221, but also covers the inclined portion 32 located on the side wall of the first protrusion 221. The pixel definition layer 4 exposes the main body 31 of the anode 3.

[0058] In some embodiments, see Figure 2 , Figure 2A partial top view of a display panel provided in an embodiment of the present application, wherein a plurality of anodes 3 are arranged in rows at intervals along a first direction X, and a plurality of anodes 3 are arranged in columns at intervals along a second direction Y, wherein the first direction X is different from the second direction Y, and a first protrusion 221 is extended along the second direction Y, and the first protrusion 221 is arranged on both sides of each column of anodes 3.

[0059] In some embodiments, see Figure 2 , the first direction X is horizontal, the second direction Y is vertical, and the first direction X is perpendicular to the second direction Y. In some other embodiments, the first direction X and the second direction Y may also be arranged at an angle, and the angle may be an acute angle or an obtuse angle.

[0060] In some embodiments, see 1 and Figure 2 , along the film thickness direction of the organic insulating layer 2, the height of the inclined portion 32 is less than the height of the first protruding portion 221, so that the anodes 3 in adjacent grooves 222 are insulated and separated by the first protruding portion 221, so as to avoid the anodes 3 in adjacent grooves 222 overlapping and causing display abnormality. It should be noted that the film thickness direction of the organic insulating layer 2 is a direction perpendicular to the plane defined by the first direction X and the second direction Y.

[0061] In some embodiments, see Figure 2 and Figure 3 , Figure 3 A cross-sectional view of the display panel along the A-A' direction provided for an embodiment of the present application, wherein the second protrusion 40 includes a first sub-protrusion 401, the first sub-protrusion 401 is extended along the second direction Y, the first sub-protrusion 401 is arranged on both sides of each column of anodes 3, the first sub-protrusion 401 is arranged in the outer layer of the first protrusion 221, and the partial inclined portion 32 is arranged between the side wall of the first protrusion 221 and the side wall of the first sub-protrusion 401.

[0062] In some embodiments, see Figure 2 and Figure 3 The pixel definition layer 4 includes a first pixel definition layer 41, which is disposed on the organic insulating layer 2. The first pixel definition layer 41 includes a first sub-protrusion 401, which is formed by the material of the first pixel definition layer 41 through an etching process.

[0063] In some embodiments, see Figure 2 and Figure 4 and Figure 5 , Figure 4 A cross-sectional view of a display panel along the BB' direction provided in an embodiment of the present application, Figure 5The cross-sectional view of the display panel provided in the embodiment of the present application along the C-C' direction, the second protrusion 40 includes a plurality of second sub-protrusions 402, the second sub-protrusions 402 are extended along the first direction X, the second sub-protrusions 402 are arranged between any two adjacent rows of anodes 3, the second sub-protrusions 402 are arranged on the outer layer of the first protrusion 221, the inclined portion 32 is arranged between the side wall of the first protrusion 221 and the side wall of the second sub-protrusion 402, and part of the first sub-protrusion 401 is arranged on the outer layer of the second sub-protrusion 402. In this way, the height of the interval between adjacent grooves 222 can be further increased, thereby further reducing the risk of color mixing of ink in adjacent grooves.

[0064] In some embodiments, see Figure 1 The pixel definition layer 4 further includes a second pixel definition layer 42, which is disposed on the organic insulating layer 2, and a portion of the first pixel definition layer 41 is disposed on the second pixel definition layer 42. The second pixel definition layer 42 includes a second sub-convex portion 402, that is, the second sub-convex portion 402 is formed by the material of the second pixel definition layer 42 through an etching process.

[0065] In some embodiments, see Figure 2 , Figure 4 and Figure 6 , Figure 6 The cross-sectional view of the display panel provided in the embodiment of the present application along the D-D' direction, the pixel definition layer 4 further includes a plurality of spacers 403, the spacers 403 are arranged in the groove 222, and the spacers 403 are arranged continuously with the second sub-protrusion 402. The spacers 403 are arranged between any two adjacent rows of anodes 3, and along the film thickness direction of the pixel definition layer 4, the spacers 403 cover the ends of the two adjacent rows of anodes 3 close to each other.

[0066] In some embodiments, see Figure 2 , Figure 4 and Figure 6 The second pixel definition layer 42 includes a second sub-convex portion 402 and a spacer 403, and the second sub-convex portion 402 and the spacer 403 are both formed by etching the material of the second pixel definition layer 42. When forming the second pixel definition layer 42, the second sub-convex portion 402 is formed on the outer layer of the first convex portion 221, and the spacer 403 is formed in the groove 222. The second sub-convex portion 402 and the spacer 403 are alternately repeated and continuously arranged along the first direction X, and the second sub-convex portion 402 and the spacer 403 can be regarded as an integral structure.

[0067] In some embodiments, see Figure 1 and Figure 7 , Figure 7A schematic diagram of an organic insulating layer in a display panel provided in an embodiment of the present application, wherein the organic insulating layer 2 includes a first organic insulating layer 21 and a second organic insulating layer 22, wherein the first organic insulating layer 21 is disposed on an array substrate 1, and the second organic insulating layer 22 is disposed on the first organic insulating layer 21. The second organic insulating layer 22 includes a first protrusion 221 and a groove 222, and along the film thickness direction of the second organic insulating layer 22, the depth of the groove 222 is the same as the thickness of the second organic insulating layer 22.

[0068] In some embodiments, see Figure 8 , Figure 8 A schematic diagram of an organic insulating layer in another display panel provided in an embodiment of the present application, wherein the width of the first protrusion 221 is 10 microns, the height of the first sub-protrusion 401 is 3 microns, and the width of the first sub-protrusion 401 is 14 microns.

[0069] In some embodiments, see Figure 1 and Figure 8 , the organic insulating layer 2 includes a first organic insulating layer 21 and a second organic insulating layer 22, the first organic insulating layer 21 is disposed on the array substrate 1, and the second organic insulating layer 22 is disposed on the first organic insulating layer 21. The second organic insulating layer 22 includes a flat portion 223, a first convex portion 221, and a groove 222, the flat portion 223 is disposed on the first organic insulating layer 21, the first convex portion 221 is disposed on the flat portion 223, and along the film thickness direction of the second organic insulating layer 22, the depth of the groove 222 is less than the thickness of the second organic insulating layer 22. In this way, the flat portion of the second organic insulating layer 22 can be retained, thereby maintaining the flatness of the organic insulating layer 2, and at the same time, the height of the interval between adjacent grooves 222 can be increased, which reduces the risk of color mixing of ink in adjacent grooves 222.

[0070] According to the display panel provided in the above embodiment of the present application, the embodiment of the present application further provides a display device, see Fig. 9 , Fig. 9 The structure diagram of the display device provided in the embodiment of the present application is as follows. The display device 1000 includes a display panel 100 and a housing 200. The display panel 100 is disposed on the housing 200. The display panel 100 can be the display panel provided in any of the above embodiments. The display device provided in the embodiment of the present application can achieve the same technical effect as the display panel provided in any of the above embodiments, which will not be described in detail here.

[0071] Beneficial effects of the embodiments of the present application: The embodiments of the present application provide a display panel and a display device, wherein the display panel includes an array substrate, an organic insulating layer, an anode, a pixel definition layer and a light-emitting layer, wherein the organic insulating layer is arranged on the array substrate, the organic insulating layer includes a plurality of first protrusions, a groove is arranged between adjacent first protrusions, the anode is arranged in the groove, the pixel definition layer is arranged on the organic insulating layer, the pixel definition layer includes a plurality of second protrusions, the second protrusions are arranged on the outer layer of the first protrusions, and the light-emitting layer is arranged on the anode, by forming a plurality of first protrusions and grooves on the organic insulating layer, and forming a plurality of second protrusions on the pixel definition layer, and arranging the second protrusions on the outer layer of the first protrusions, the height of the interval between adjacent grooves can be increased, thereby increasing the amount of ink that the grooves can accommodate, avoiding ink overflowing from the grooves during inkjet printing, and thereby reducing the risk of color mixing.

[0072] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0075] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: include: An array substrate; An organic insulating layer, disposed on the array substrate, the organic insulating layer comprising a plurality of first protrusions, and grooves are disposed between adjacent first protrusions; an anode, disposed in the groove; A pixel definition layer is disposed on the organic insulating layer, wherein the pixel definition layer comprises a plurality of second protrusions, and the second protrusions are disposed on an outer layer of the first protrusions; as well as The light-emitting layer is disposed on the anode.

2. The display panel according to claim 1, wherein: The anode includes a main body and an inclined portion, wherein the inclined portion is connected to the main body and is arranged at an angle with the main body, the main body is arranged at the bottom of the groove, and the inclined portion is arranged on the side wall of the first protrusion.

3. The display panel according to claim 2, wherein: The second protrusion is disposed on the first protrusion and a portion of the anode, and the inclined portion of the anode is disposed between a side wall of the first protrusion and a side wall of the second protrusion.

4. The display panel according to claim 2, wherein: A plurality of the anodes are arranged in rows at intervals along a first direction, and a plurality of the anodes are arranged in columns at intervals along a second direction, and the first direction is different from the second direction; The first protrusions are extended along the second direction, and are disposed on both sides of each column of the anodes.

5. The display panel according to claim 2, wherein: Along a film thickness direction of the organic insulating layer, a height of the inclined portion is smaller than a height of the first protruding portion.

6. The display panel according to claim 4, wherein: The second protrusion includes a first sub-protrusion, the first sub-protrusion is extended along the second direction, and the first sub-protrusion is arranged on both sides of each column of the anodes; The first sub-protrusion is arranged on the outer layer of the first protrusion, and the inclined portion is arranged between the side wall of the first protrusion and the side wall of the first sub-protrusion.

7. The display panel according to claim 6, wherein: The second protrusion includes a plurality of second sub-protrusions, the second sub-protrusions are extended along the first direction, and the second sub-protrusions are arranged between any two adjacent rows of anodes; The second sub-protrusion is arranged on the outer layer of the first protrusion, the inclined portion is arranged between the side wall of the first protrusion and the side wall of the second sub-protrusion, and part of the first sub-protrusion is arranged on the outer layer of the second sub-protrusion.

8. The display panel according to claim 7, wherein: The pixel definition layer further includes a plurality of spacers, the spacers are arranged in the grooves, and the spacers are continuously arranged with the second sub-convex portions; The spacer is disposed between any two adjacent rows of the anodes, and along the film thickness direction of the pixel definition layer, the spacer covers ends of the two adjacent rows of the anodes that are close to each other.

9. The display panel according to claim 1, wherein: The organic insulating layer comprises: A first organic insulating layer is disposed on the array substrate; a second organic insulating layer, disposed on the first organic insulating layer; The second organic insulating layer includes the first protrusion and the groove, and along the film thickness direction of the second organic insulating layer, the depth of the groove is the same as the thickness of the second organic insulating layer.

10. The display panel according to claim 1, wherein: The organic insulating layer comprises: A first organic insulating layer is disposed on the array substrate; a second organic insulating layer, disposed on the first organic insulating layer; The second organic insulating layer includes a flat portion, the first protruding portion and the groove, the flat portion is arranged on the first organic insulating layer, the first protruding portion is arranged on the flat portion, and along the film thickness direction of the second organic insulating layer, the depth of the groove is less than the thickness of the second organic insulating layer.

Images