Display panel

Abstract

The display panel comprises an array substrate, a light emitting device layer, a pixel definition layer and a packaging layer, the light emitting device layer comprises a plurality of light emitting units, the pixel definition layer comprises a plurality of openings, the light emitting units are correspondingly located in the openings, and the packaging layer comprises a first organic layer and a first inorganic layer arranged on the first organic layer. The refractive index of the first organic layer is smaller than that of the first inorganic layer, the first organic layer comprises a plurality of organic units, each organic unit comprises a first main body part and a first protruding part connected with the first main body part, the first main body parts are located in the corresponding openings, and the first protruding parts protrude out of the openings; the surfaces of the sides, deviating from the array substrate, of the first protruding parts are arc-shaped surfaces, so that the organic units can form a micro-lens structure, and the light emitting efficiency is effectively improved; compared with a micro-lens structure additionally arranged on the packaging layer, the requirement for the alignment precision of the micro-lens can be lowered, the bending stress can be reduced, and the process and equipment cost 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] In order to improve the light extraction efficiency of organic light-emitting diode (OLED) display panels, a microlens structure is usually set on the light-emitting device. However, to form a microlens structure, a photomask is generally required to form a specific pattern structure, which increases the process and equipment costs.

[0003] In addition, for OLED display panels with high resolution requirements, the increase in resolution will lead to an increase in mask accuracy, and the requirements for illumination accuracy will be more stringent. At present, the mask used to form the microlens structure may not meet the requirements in terms of accuracy, resulting in deviations in the alignment accuracy of the microlens structure and the light-emitting device. Summary of the invention

[0004] The embodiments of the present application provide a display panel that can reduce the alignment accuracy requirements of the microlens structure, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, a display panel is provided, comprising:

[0006] An array substrate;

[0007] A light emitting device layer, disposed on the array substrate, the light emitting device layer comprising a plurality of light emitting units;

[0008] a pixel definition layer, disposed on the array substrate, the pixel definition layer comprising a plurality of openings, the plurality of light emitting units being located in the plurality of openings in a one-to-one correspondence; and

[0009] an encapsulation layer, comprising a first organic layer disposed on the light-emitting unit and a first inorganic layer disposed on the first organic layer;

[0010] Wherein, the refractive index of the first organic layer is less than the refractive index of the first inorganic layer;

[0011] The first organic layer includes a plurality of organic units, and the plurality of organic units correspond one by one to the plurality of openings. The organic unit includes a first main body and a first protruding portion connected to the first main body, the first main body is located in the corresponding opening, the first protruding portion protrudes from the opening, and a surface of the first protruding portion facing away from the array substrate is an arc-shaped surface.

[0012] In some embodiments of the present application, the arc surface includes a first central axis along the thickness direction of the display panel, the light-emitting unit includes a second central axis along the thickness direction of the display panel, and the first central axis coincides with a corresponding second central axis.

[0013] In some embodiments of the present application, the encapsulation layer further includes a second organic layer, where the second organic layer is disposed on the first inorganic layer, and a refractive index of the first inorganic layer is smaller than a refractive index of the second organic layer.

[0014] In some embodiments of the present application, the first inorganic layer includes a plurality of second protrusions and a flat portion located between adjacent second protrusions, the second protrusions cover corresponding first protrusions, and a surface of the second protrusion facing away from the array substrate is an arc-shaped surface.

[0015] In some embodiments of the present application, the refractive index of the first inorganic layer is 1.5-1.6, and the refractive index of the second organic layer is greater than 1.6.

[0016] In some embodiments of the present application, the encapsulation layer further includes a second inorganic layer, the second inorganic layer is disposed between the first organic layer and the light-emitting device layer, and the second inorganic layer covers the light-emitting device layer and the pixel definition layer.

[0017] In some embodiments of the present application, a periphery of an orthographic projection of the first protrusion on the array substrate coincides with a boundary of an orthographic projection of the opening on the array substrate.

[0018] In some embodiments of the present application, the first main body portion includes a top surface and a bottom surface opposite to each other, the top surface is flush with the upper end of the opening and connected to the first protrusion, and the bottom surface is located in the opening and closer to the array substrate than the top surface;

[0019] Wherein, the maximum vertical distance between the surface of the first protrusion facing away from the array substrate and the top surface is 0.1 to 1 times the vertical distance between the top surface and the bottom surface.

[0020] In some embodiments of the present application, the refractive index of the first organic layer is 1.4 to 1.5, and the refractive index of the first inorganic layer is 1.5 to 1.6.

[0021] In some embodiments of the present application, the surface tension of the first organic layer is 20 mN to 40 mN.

[0022] In the display panel of the embodiment of the present application, the first organic layer of the encapsulation layer is arranged as a plurality of organic units, and the plurality of organic units are arranged one by one in the opening of the pixel definition layer, and the organic unit part protrudes from the opening, and the surface of the first protrusion facing away from the array substrate is an arc surface, and the refractive index of the first organic layer is designed to be smaller than the refractive index of the first inorganic layer above, so that the organic unit can form a microlens structure, which can effectively improve the light extraction efficiency while avoiding the invasion of water and oxygen; relative to the additional arrangement of the microlens structure on the encapsulation layer, the design of the above-mentioned organic unit provided in the embodiment of the present application can not only reduce the requirements for the alignment accuracy of the microlens, but also reduce the bending stress, and there is no need to use a separate mask, thereby reducing the process and equipment costs, and in addition, the thickness of the display panel is also reduced.

[0023] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] 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.

[0026] Figure 1 is a schematic diagram of a first structure of a display panel provided in an exemplary embodiment of the present disclosure;

[0027] Figure 2 is a second structural schematic diagram of a display panel provided in an exemplary embodiment of the present disclosure;

[0028] Figure 3 is a third structural schematic diagram of a display panel provided in an exemplary embodiment of the present disclosure;

[0029] Figure 4 yes Figure 3 A partial enlarged schematic diagram of .

[0030] Description of reference numerals:

[0031] 100. Display panel;

[0032] 10. Array substrate;

[0033] 20. pixel definition layer; 201. opening;

[0034] 30. Light-emitting device layer; 31. Anode; 32. Light-emitting unit;

[0035] 40. Encapsulation layer; 41. Second inorganic layer; 42. First inorganic layer; 43. First organic layer; 44. Second organic layer; 45. Third inorganic layer; 421. Second raised portion; 422. Flat portion; 430. Organic unit; 431. First main body portion; 432. First raised portion; 4311. Top surface; 4312. Bottom surface. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] See also Figure 1 , Figure 1 The first structural schematic diagram of the display panel 100 provided in the embodiment of the present application. The display panel 100 provided in the embodiment of the present application includes an array substrate 10, a light emitting device layer 30 disposed on the array substrate 10, a pixel definition layer 20 disposed on the array substrate 10, and an encapsulation layer 40 disposed on the light emitting device layer 30.

[0039] The array substrate 10 may include a substrate and a pixel driving circuit layer disposed on the substrate.

[0040] The substrate may be formed of an organic material, may be formed as a single layer formed of, for example, polyimide, or may be formed as a plurality of layers formed of polyimide repeatedly stacked by coating and curing. The substrate may also be formed as a composite laminate structure, for example, of a first flexible substrate, an intermediate barrier layer, and a second flexible substrate, the first substrate and the second substrate may be formed of the same material, such as polyimide, and the intermediate barrier layer may be formed of, for example, an inorganic material including at least one of SiOx and SiNx.

[0041] The pixel driving circuit layer is used to drive the light emitting device layer 30 to perform light emitting display. The pixel driving circuit layer may include driving circuits such as 7T1C (7 transistors and 1 capacitor), 8T1C (8 transistors and 1 capacitor), but is not limited thereto. The specific structure of the pixel driving circuit layer can refer to the prior art and will not be repeated here.

[0042] The light-emitting device layer 30 includes a plurality of light-emitting units 32, one of which may correspond to one sub-pixel, that is, one of which is the smallest light-emitting unit. The light-emitting unit 32 may be an organic light-emitting diode. The light-emitting device layer 30 includes an anode 31 disposed on the array substrate 10, a hole injection layer, an organic emission layer, an electron transport layer, and a cathode stacked in sequence on the anode 31. The anode 31, the cathode, and the above-mentioned functional layers between the anode 31 and the cathode constitute a plurality of light-emitting units 32. The light-emitting device layer 30 may be a top-emitting device, the anode 31 being a reflective anode, and the cathode being a semi-transmissive cathode or a transmissive cathode. The anode 31 may be made of, for example, one or more metals selected from magnesium (Mg), silver (Ag), gold (Au), calcium (Ca), lithium (Li), chromium (Cr), and aluminum (Al), or alloys thereof. The cathode may be formed of materials such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium oxide (In2O3). The film layers of the light-emitting device layer 30 excluding the cathode and the anode 31 may include low molecular weight organic materials or high molecular weight organic materials. All hole injection / transport materials, electron injection / transport materials, and organic emission materials suitable for OLED devices can be used in the light-emitting device layer 30 of the present application.

[0043] The pixel definition layer 20 includes a plurality of openings 201, and the openings 201 can expose corresponding anodes 31. The plurality of light emitting units 32 are located in the plurality of openings 201 in a one-to-one correspondence. The pixel definition layer 20 can be formed to include resin, such as polyacrylate or polyimide, silica-based organic materials, etc.

[0044] The encapsulation layer 40 is at least used to block the invasion of water and oxygen. The encapsulation layer 40 may include a stacked multi-layer inorganic layer and a multi-layer organic layer. The organic layer may be formed by a polymer, and may be, for example, a laminate or a monolayer formed by any one of polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The organic layer may be formed by polyacrylate, specifically including a substance obtained by polymerizing a monomer composition including a monomer based on a diacrylate and a monomer based on a triacrylate. The monomer composition may also include a monomer based on a monoacrylate. In addition, the monomer composition may also include a well-known photoinitiator such as TPO, but the monomer composition is not limited thereto. The inorganic layer may be a laminate or a monolayer including a metal oxide or a metal nitride. For example, the inorganic layer may include any one of SiNx, Al2O3, SiO2, and TiO2.

[0045] In the embodiment of the present application, the encapsulation layer 40 includes a first organic layer 43 disposed on the light emitting unit 32 and a first inorganic layer 42 disposed on the first organic layer 43 . The refractive index of the first organic layer 43 is smaller than that of the first inorganic layer 42 .

[0046] The first organic layer 43 includes a plurality of organic units 430, and the plurality of organic units 430 correspond to the plurality of openings 201 one by one. The organic unit 430 includes a first main body 431 and a first protrusion 432 connected to the first main body 431, the first main body 431 is located in the corresponding opening 201, and the first protrusion 432 protrudes from the opening 201.

[0047] By setting the first organic layer 43 of the encapsulation layer 40 as a plurality of organic units 430, the plurality of organic units 430 are respectively and one by one set in the opening 201 of the pixel definition layer 20, and the organic units 430 are partially protruded from the opening 201, and the refractive index of the first organic layer 43 is designed to be smaller than the refractive index of the first inorganic layer 42 above, so that the organic units 430 can form a microlens structure, which can effectively improve the light extraction efficiency while avoiding the invasion of water and oxygen; relative to the additional microlens structure on the encapsulation layer 40, the design of the above-mentioned organic unit 430 provided in the embodiment of the present application can not only reduce the requirements for the alignment accuracy of the microlens, but also reduce the bending stress, without the need to use a separate mask, thereby reducing the process and equipment costs, and in addition, also reducing the thickness of the display panel 100.

[0048] In an embodiment of the present application, the refractive index of the first organic layer 43 may be 1.4-1.5, specifically 1.4, 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.48, 1.49, 1.5 or a range between any two of the above values.

[0049] The material of the first organic layer 43 includes, but is not limited to, one or more combinations of polyethersulfone (PES), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyimide (PI) compounds, polycarbonate (PC), cellulose triacetate, cellulose acetate propionate (CAP) and polyarylene ether sulfone.

[0050] The first organic layer 43 can be formed in the corresponding opening 201 by inkjet printing. On the one hand, the opening 201 can limit the organic liquid during inkjet printing to prevent the organic liquid from overflowing. On the other hand, compared with the technical solution of forming a microlens on the encapsulation layer 40 by a mask process such as coating, exposure, development, and etching, the first organic layer 43 with a microlens function is formed in the corresponding opening 201 by inkjet printing. It can not only simplify the process without using a separate mask, but also avoid the risk of the mask accuracy not meeting the requirements and causing the alignment accuracy (alignment of the microlens and the light-emitting unit) to shift.

[0051] Please continue reading Figure 1 The surface of the first protrusion 432 facing away from the array substrate 10 may be an arc-shaped surface. Compared with the trapezoidal surface, the arc-shaped surface can better release stress and reduce bending stress. The flat surface has no focusing effect, and the arc-shaped surface has a better focusing effect.

[0052] Furthermore, in the embodiment of the present application, the central axis of the arc surface along the thickness direction of the display panel 100 coincides with the central axis of the corresponding light emitting unit 32 along the thickness direction of the display panel 100. With such a design, the convergence center of the light source refracted from the arc surface can coincide with the center of the light emitting unit 32, further improving the focusing effect and maximizing the light extraction efficiency.

[0053] In the embodiment of the present application, it is understood that adjacent organic units 430 need to be disconnected. When the first organic layer 43 is formed by inkjet printing, its material is in a liquid state. If it is not disconnected during printing, it is difficult to ensure the convex morphology of the organic unit 430 printed in each opening 201, that is, it is impossible to better control the formation of the first protrusion 432.

[0054] The surface tension of the first organic layer 43 may be 20 mN to 40 Mn. If the surface tension is too low, the organic units 430 in each opening 201 are in a liquid state during inkjet printing and may be connected together. If the surface tension is too high, the organic units 430 in the opening 201 may not be leveled.

[0055] Optionally, the surface tension of the first organic layer 43 may be 20 mN to 27 mN. By selecting an organic material with a surface tension within this range, it is easier to print arc-shaped droplets in the corresponding openings 201 during inkjet printing, which is more capable of releasing stress than traditional trapezoidal droplets.

[0056] In the embodiment of the present application, the refractive index of the first inorganic layer 42 is 1.5 to 1.6, specifically 1.5, 1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58, 1.59, 1.6 or a range between any two of the above values. However, it should be noted that the refractive index of the first inorganic layer 42 needs to be greater than the refractive index of the first organic layer 43, so that the light emitted by the light-emitting unit 32 can be refracted when passing through the interface between the first organic layer 43 and the first inorganic layer 42, thereby achieving a focusing effect.

[0057] The material of the first inorganic layer 42 includes but is not limited to at least one of SiO2, Si3N4 and SiON. The first inorganic layer 42 can not only change the emission direction of light, but also protect the first organic layer 43 and block the invasion of water and oxygen.

[0058] The first inorganic layer 42 can be deposited on the entire surface of the first organic layer 43 and the pixel definition layer 20 by chemical vapor deposition (CVD). The first inorganic layer 42 covers the first organic layer 43 and the pixel definition layer 20.

[0059] In the embodiment of the present application, the first inorganic layer 42 may include a plurality of second protrusions 421 and a flat portion 422 located between adjacent second protrusions 421. The surface of the second protrusion 421 facing away from the array substrate 10 is not flat relative to the surface of the array substrate 10, and the surface of the flat portion 422 facing away from the array substrate 10 is flat. That is, the surface of the first inorganic layer 42 facing away from the array substrate 10 is undulating as a whole.

[0060] In the embodiment of the present application, the second protrusion 421 covers the corresponding first protrusion 432. The top surface (the side surface facing away from the array substrate 10) of the second protrusion 421 can be consistent with the top surface (the side surface facing away from the array substrate 10) of the first protrusion 432.

[0061] Specifically, a surface of the second protrusion 421 facing away from the array substrate 10 may be an arc-shaped surface.

[0062] See also Figure 1The encapsulation layer 40 may further include a second organic layer 44, which is disposed on the first inorganic layer 42, and the refractive index of the first inorganic layer 42 is smaller than the refractive index of the second organic layer 44. With such a design, the light refracted from the first organic layer 43 may be refracted twice when reaching the interface between the first inorganic layer 42 and the second organic layer 44, further increasing the light focusing effect.

[0063] Optionally, a refractive index of the second organic layer 44 is greater than 1.6.

[0064] Specifically, the material of the second organic layer 44 includes, but is not limited to, one or more materials selected from the group consisting of polyethersulfone (PES), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyimide (PI) compounds, polycarbonate (PC), cellulose triacetate, cellulose acetate propionate (CAP) and polyarylene ether sulfone.

[0065] In an embodiment of the present application, the second organic layer 44 may be formed by inkjet printing. The surface of the second organic layer 44 facing away from the array substrate 10 may be a flat surface to provide a flat surface for subsequent devices such as a touch electrode layer.

[0066] See also Figure 2 , Figure 2 A second structural diagram of the display panel 100 provided in an embodiment of the present application. Figure 1 The difference between the illustrated embodiment is that the display panel 100 may further include a second inorganic layer 41. The second inorganic layer 41 is disposed between the first organic layer 43 and the light-emitting device layer 30, and the first inorganic layer 42 covers the light-emitting device layer 30 and the pixel definition layer 20, so as to extend the effective encapsulation distance and improve the reliability of the encapsulation layer 40 while realizing the light focusing of the encapsulation layer 40.

[0067] The first inorganic layer 42 can be deposited on the opening 201 of the pixel definition layer 20 and the body of the pixel definition layer 20 by a CVD process. The first inorganic layer 42 can block the invasion of water and oxygen, and the material of the first inorganic layer 42 includes but is not limited to at least one of SiO2, Si3N4 and SiON.

[0068] Further, in an embodiment of the present application, the encapsulation layer 40 may further include a third inorganic layer 45, and the third inorganic layer 45 is disposed on the second organic layer 44. The third inorganic layer 45 covers the second organic layer 44, and the third inorganic layer 45 may be entirely deposited on the second organic layer 44 by CVD to protect the second organic layer 44.

[0069] See also Figure 3 , Figure 3 The third structural diagram provided in the embodiment of the present application. Figure 1 The difference of the embodiment shown is that the first protrusion 432 does not overflow the boundary of the opening 201 in the plane direction of the array substrate 10. That is, the periphery (boundary) of the orthographic projection of the first protrusion 432 on the array substrate 10 and the boundary of the orthographic projection of the opening 201 on the array substrate 10 can overlap. With such a design, the projection area of ​​the first organic layer 43 can be reduced, and the water and oxygen intrusion path can be minimized to the greatest extent.

[0070] See also Figure 4 , Figure 4 for Figure 3 As a partially enlarged schematic diagram, the first main body portion 431 may include a relative top surface 4311 and a bottom surface 4312, the top surface 4311 is flush with the upper end of the opening 201 and is connected to the first protrusion 432, and the bottom surface 4312 is located in the opening 201 and is closer to the array substrate 10 than the top surface 4311.

[0071] In the embodiment of the present application, the maximum vertical distance a between the surface of the first protrusion 432 facing away from the array substrate 10 and the top surface 4311 is 0.1 to 1 times the vertical distance b between the top surface 4311 and the bottom surface 4312. Figure 4 As shown. Since the surface of the first protrusion 432 facing away from the array substrate 10 may not be a flat surface, such as an arc-shaped surface, the vertical distance between the surface of the first protrusion 432 facing away from the array substrate 10 and the top surface 4311 of the first main body 431 is not unique, and there is a maximum value. By setting the maximum vertical distance a and the vertical distance b within the above range, a better focusing effect can be ensured.

[0072] In summary, the embodiment of the present application provides a display panel 100, by setting the first organic layer 43 of the encapsulation layer 40 as a plurality of organic units 430, and respectively setting the plurality of organic units 430 in the opening 201 of the pixel definition layer 20 in a one-to-one correspondence, and making the organic unit 430 partially protrude from the opening 201, and the refractive index of the first organic layer 43 is designed to be smaller than the refractive index of the first inorganic layer 42 above, so that the organic unit 430 can form a microlens structure, while avoiding the invasion of water and oxygen, it can effectively improve the light extraction efficiency; relative to the additional microlens structure on the encapsulation layer 40, the design of the above-mentioned organic unit 430 provided in the embodiment of the present application can not only reduce the requirements for the alignment accuracy of the microlens, but also reduce the bending stress, without the need to use a separate mask, reducing the process and equipment costs, and also reducing the thickness of the display panel 100.

[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; A light emitting device layer, disposed on the array substrate, the light emitting device layer comprising a plurality of light emitting units; A pixel definition layer is disposed on the array substrate, the pixel definition layer comprises a plurality of openings, and the plurality of light emitting units are located in the plurality of openings in a one-to-one correspondence; as well as an encapsulation layer, comprising a first organic layer disposed on the light-emitting unit and a first inorganic layer disposed on the first organic layer; Wherein, the refractive index of the first organic layer is less than the refractive index of the first inorganic layer; The first organic layer includes a plurality of organic units, and the plurality of organic units correspond one by one to the plurality of openings. The organic unit includes a first main body and a first protruding portion connected to the first main body, the first main body is located in the corresponding opening, the first protruding portion protrudes from the opening, and a surface of the first protruding portion facing away from the array substrate is an arc-shaped surface.

2. The display panel according to claim 1, characterized in that: The arc surface includes a first central axis along the thickness direction of the display panel, the light emitting unit includes a second central axis along the thickness direction of the display panel, and a first central axis coincides with a corresponding second central axis.

3. The display panel according to claim 1, characterized in that: The encapsulation layer further includes a second organic layer, which is disposed on the first inorganic layer, and a refractive index of the first inorganic layer is smaller than a refractive index of the second organic layer.

4. The display panel according to claim 3, characterized in that: The first inorganic layer includes a plurality of second protrusions and a flat portion located between adjacent second protrusions, the second protrusions cover corresponding first protrusions, and a surface of the second protrusion facing away from the array substrate is an arc surface.

5. The display panel according to claim 3, characterized in that: The refractive index of the first inorganic layer is 1.5-1.6, and the refractive index of the second organic layer is greater than 1.

6.

6. The display panel according to claim 1, characterized in that: The encapsulation layer further includes a second inorganic layer, which is disposed between the first organic layer and the light-emitting device layer, and covers the light-emitting device layer and the pixel definition layer.

7. The display panel according to claim 1, characterized in that: The periphery of the orthographic projection of the first protrusion on the array substrate coincides with the boundary of the orthographic projection of the opening on the array substrate.

8. The display panel according to claim 1, characterized in that: The first main body portion includes a top surface and a bottom surface opposite to each other, the top surface is flush with the upper end of the opening and connected to the first protrusion, and the bottom surface is located in the opening and closer to the array substrate than the top surface; Wherein, the maximum vertical distance between the surface of the first protrusion facing away from the array substrate and the top surface is 0.1 to 1 times the vertical distance between the top surface and the bottom surface.

9. The display panel according to claim 1, characterized in that: The refractive index of the first organic layer is 1.4 to 1.5, and the refractive index of the first inorganic layer is 1.5 to 1.

6.

10. The display panel according to claim 1, characterized in that: The surface tension of the first organic layer is 20 mN to 40 mN.

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