Display panel, manufacturing method thereof and display device

Abstract

The invention discloses a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display, the display panel comprises a plurality of pixel areas and non-pixel areas at least located between two adjacent pixel areas; the display panel further comprises a substrate; the pixel definition layer is located on one side of the substrate and comprises a pixel definition structure located in a non-pixel area and an opening located in a pixel area; the blocking part is arranged on one side, far away from the substrate, of the pixel defining structure; the light-emitting device layer comprises an organic common layer, and the organic common layer is located on the side, away from the substrate, of the blocking part; the blocking part comprises at least one protruding part, the protruding part comprises a first bottom face close to the substrate, a first side wall and a second side wall, the first side wall and the second side wall are opposite, the included angle between the first side wall and the first bottom face is alpha, the included angle between the second side wall and the first bottom face is beta, and one of alpha and beta is larger than the other one. By introducing the blocking part, the leakage phenomenon between the sub-pixels can be improved, and the display effect is improved.

Description

[0001] This application is a divisional application of the patent filed on November 30, 2022, with application number 202211527036.6 and invention title: Display panel and its preparation method, display device. Technical Field

[0002] This invention relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the same, and a display device. Background Technology

[0003] Organic light-emitting diodes (OLEDs) are considered a promising next-generation display technology that could replace thin-film transistor liquid crystal displays (TFT-LCDs) due to their numerous advantages, such as self-illumination, thinness, good color gamut, and low power consumption.

[0004] OLED technology has matured and is gradually entering the market. Organic light-emitting diode (OLED) display devices include an organic light-emitting diode (OLED) for converting electrical energy into light energy. The OLED includes an anode, a cathode, and an organic layer disposed between the cathode and anode. During the display process, holes and electrons injected from the anode and cathode, respectively, combine in the organic layer to form electron-hole pairs. As the electron-hole pairs transition from the excited state to the ground state, they emit light and display an image.

[0005] The aforementioned organic layer is formed within the pixel region and located on the anode, while the cathode is formed on the organic layer. During the deposition of the organic layer, an organic layer is also formed in the non-pixel region. At least the organic layers in the pixel region and non-pixel region are connected; that is, there may be interconnected organic layers between different sub-pixels. Under current-driven conditions, the phenomenon of sub-pixels "stealing" light is highly likely to occur. Summary of the Invention

[0006] In view of this, the present invention provides a display panel and a method for manufacturing the same, as well as a display device, which aims to improve the problem of sub-pixel light leakage.

[0007] In a first aspect, the present invention provides a display panel comprising a plurality of pixel regions and at least a non-pixel region located between two adjacent pixel regions;

[0008] The display panel also includes:

[0009] Substrate;

[0010] A pixel definition layer located on one side of the substrate includes pixel definition structures located in non-pixel regions and openings located in pixel regions;

[0011] The barrier portion is disposed on the side of the pixel definition structure away from the substrate;

[0012] The light-emitting device layer includes an organic common layer, which is located on the side of the barrier portion away from the substrate.

[0013] The barrier portion includes at least one protrusion, the protrusion including a first bottom surface near the substrate, a first sidewall and a second sidewall opposite each other, the angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β, wherein one of α and β is greater than the other.

[0014] Secondly, based on the same inventive concept, the present invention provides a method for manufacturing a display panel, comprising:

[0015] A substrate is provided, and an array layer is formed on the substrate;

[0016] An anode is formed on the side of the array layer away from the substrate, and the anode is electrically connected to the array layer;

[0017] A pixel definition layer is formed on the side of the anode that faces away from the substrate;

[0018] A first mask is provided on the side of the pixel definition layer away from the substrate. The first mask includes at least a fully transparent area, a semi-transparent area, and an opaque area.

[0019] The exposure process involves forming an opening in the fully transparent area of ​​the pixel definition layer to expose the anode, and forming a pixel definition structure and a barrier portion in the opaque and semi-transparent areas. The barrier portion is disposed on the side of the pixel definition structure away from the substrate. The barrier portion includes at least one protrusion, which includes a first bottom surface near the substrate, a first sidewall and a second sidewall facing each other. The angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β, wherein one of α and β is greater than the other.

[0020] A light-emitting device layer is formed at least in the opening of the pixel region, and the light-emitting device layer includes an organic common layer.

[0021] Thirdly, based on the same inventive concept, the present invention also displays another method for manufacturing the panel, comprising:

[0022] A substrate is provided, and an array layer is formed on the substrate;

[0023] An anode is formed on the side of the array layer away from the substrate, and the anode is electrically connected to the array layer;

[0024] A pixel definition layer is formed on the side of the anode that faces away from the substrate;

[0025] A first mask is disposed on the side of the pixel definition layer away from the substrate. The first mask includes a fully transparent area and an opaque area, or the first mask includes a fully transparent area and a semi-transparent area.

[0026] An opening is formed in the fully transparent area and the anode is exposed through exposure.

[0027] A first hard mask layer is formed on the side of the opening and pixel definition layer away from the substrate. A second organic film is formed on the side of the first hard mask layer away from the substrate. The second organic film is processed to form an opening area and a non-opening area on the second organic film. Along the direction perpendicular to the substrate, the opening area only overlaps with the pixel definition layer.

[0028] Remove the first hard mask layer located in the opening region;

[0029] A barrier portion and a pixel definition structure are formed on the pixel definition layer by etching. The barrier portion is disposed on the side of the pixel definition structure away from the substrate. The barrier portion includes at least one protrusion. The protrusion includes a first bottom surface close to the substrate, a first sidewall and a second sidewall opposite to each other. The angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β. One of α and β is greater than the other.

[0030] The second organic film and the first hard mask layer are removed sequentially.

[0031] A light-emitting device layer is formed at least in the opening of the pixel region, and the light-emitting device layer includes an organic common layer.

[0032] Fourthly, based on the same inventive concept, the present invention also provides a display device, including the display panel provided in the first aspect of the present invention.

[0033] Compared with related technologies, the display panel, its manufacturing method, and display device provided by the present invention achieve at least the following beneficial effects:

[0034] In the display panel and display device provided in the embodiments of the present invention, or in the display panel formed by the manufacturing method of the present invention, the pixel definition layer includes a pixel definition structure located in a non-pixel region and an opening located in a pixel region. A light-emitting device layer is disposed in the opening. Under the drive of current, the light-emitting device layer in the opening emits light to realize the display function. The light-emitting device layer includes an organic common layer. When forming the organic common layer, part of the organic common layer is located in the pixel region, and part of the organic common layer is located in the non-pixel region. In the present invention, a barrier portion is provided on the side of the pixel definition structure away from the substrate. This barrier portion includes at least one protrusion, and the protrusion has an asymmetrical structure. The angle between its first sidewall and the first bottom surface is α, and the angle between its second sidewall and the first bottom surface is β, where α and β are different. When forming an organic common layer in pixel and non-pixel regions, the asymmetrical protrusions in the barrier portion extend the laying path of the organic common layer, reducing the amount of organic common layer on the side of the protrusion away from the substrate. In some cases, the organic common layer can even be cut off on the side of the protrusion away from the substrate. The driving current of a certain pixel region will not be able to leak to the adjacent pixel region, or only a small amount of current that is insufficient to drive the light-emitting device layer to emit light may be transmitted to the adjacent pixel region. In this way, the leakage phenomenon of the display panel is effectively improved, which is conducive to improving the overall display effect of the display panel.

[0035] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0036] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0038] Figure 1 The image shown is a plan view of a display panel provided in an embodiment of the present invention;

[0039] Figure 2 As shown Figure 1 A cross-sectional view of the display panel along the AA direction;

[0040] Figure 3 The diagram shows a structural illustration of a non-pixel region between two adjacent pixel regions.

[0041] Figure 4 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0042] Figure 5The diagram shows a plan view of a first protrusion and a second protrusion located between two adjacent openings.

[0043] Figure 6 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0044] Figure 7 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0045] Figure 8 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0046] Figure 9 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0047] Figure 10 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0048] Figure 11 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0049] Figure 12 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0050] Figure 13 The diagram shows another structural illustration of the non-pixel region between two adjacent pixel regions.

[0051] Figure 14 The diagram shown illustrates the relative positional relationship between the second color light-emitting device and the blocking part provided in an embodiment of the present invention.

[0052] Figure 15 As shown Figure 14 A BB-direction cross-section diagram;

[0053] Figure 16 The diagram shown illustrates the relative positional relationship between the second color light-emitting device and the blocking part provided in an embodiment of the present invention.

[0054] Figure 17 The diagram shown is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention;

[0055] Figure 18 The diagram shown is a schematic representation of a display panel in which an array layer is formed on a substrate, according to an embodiment of the present invention.

[0056] Figure 19 The diagram shows a structure in which an anode is formed on an array layer.

[0057] Figure 20 The diagram shows a structure in which a pixel definition layer is formed on the side of the anode away from the substrate.

[0058] Figure 21 The diagram shows a structure in which a first mask is set on one side of the pixel definition layer.

[0059] Figure 22 The diagram shows a structure in which a pixel definition structure and a blocking part are formed on a pixel definition layer.

[0060] Figure 23 The diagram shows a structural schematic for forming an organic common layer.

[0061] Figure 24 The diagram shows another structural schematic of forming a pixel definition structure and a blocking part on a pixel definition layer;

[0062] Figure 25 The diagram shown is another flowchart of the manufacturing method of the fixed display panel provided in the embodiment of the present invention;

[0063] Figure 26 The diagram shown is a schematic of a structure that incorporates a first hard mask layer.

[0064] Figure 27 The diagram shows a structural schematic of forming a first organic film above a first hard mask layer.

[0065] Figure 28 The diagram shows a structure with part of the first hard mask layer removed.

[0066] Figure 29 The diagram shows a structure in which a recess is formed on a protrusion.

[0067] Figure 30 The image shown is in Figure 29 A schematic diagram of a structure based on the shown structure, with the first organic film and the first hard mask layer removed;

[0068] Figure 31 The diagram shown is another flowchart of the method for manufacturing a display panel provided in an embodiment of the present invention;

[0069] Figure 32 The diagram shows a scheme where the first mask only includes fully transparent and opaque areas when it is introduced.

[0070] Figure 33 The diagram shows a scheme where the first mask only includes fully transparent and semi-transparent areas when the first mask is introduced.

[0071] Figure 34 To utilize Figure 32A schematic diagram of the structure formed by exposing the corresponding first mask structure;

[0072] Figure 35 The following is a description of the use of Figure 33 A schematic diagram of the structure formed by exposing the corresponding first mask;

[0073] Figure 36 The image shown is in Figure 34 A schematic diagram of a structure in which a first hard mask layer is formed on the structure shown;

[0074] Figure 37 The image shown is in Figure 36 A schematic diagram of a structure in which a second organic membrane is formed on the structure shown;

[0075] Figure 38 The image shown is in Figure 35 A schematic diagram of a structure in which a first hard mask layer is formed on the structure shown;

[0076] Figure 39 The image shown is in Figure 38 A schematic diagram of a structure in which a second organic membrane is formed on the structure shown;

[0077] Figure 40 The image shown is in Figure 38 A schematic diagram of a structure based on the structure shown, with the first hard mask layer of the opening region removed;

[0078] Figure 41 The image shown is in Figure 39 A schematic diagram of a structure based on the structure shown, with the first hard mask layer of the opening region removed;

[0079] Figure 42 The image shown is in Figure 40 A schematic diagram of a structure in which a barrier part and a pixel definition structure are formed based on the structure shown;

[0080] Figure 43 The image shown is in Figure 41 A schematic diagram of a structure in which a barrier part and a pixel definition structure are formed based on the structure shown;

[0081] Figure 44 The image shows the removal process. Figure 42 A schematic diagram of a structure behind the second organic film and the first hard mask layer shown in the diagram;

[0082] Figure 45 The image shows the removal process. Figure 43 A schematic diagram of a structure behind the second organic film and the first hard mask layer shown in the diagram;

[0083] Figure 46 The image shown is in Figure 44A schematic diagram of a structure in which an organic common layer is formed based on the structure shown;

[0084] Figure 47 The image shown is in Figure 45 A schematic diagram of a structure in which an organic common layer is formed based on the structure shown;

[0085] Figure 48 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention. Detailed Implementation

[0086] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0087] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0088] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0089] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0090] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0091] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0092] In the OLED display panel provided by the related technology, since the organic layer is located in both the pixel area and the non-pixel area, when only one of the two adjacent pixel areas needs to emit light, the current driving the light emission of that pixel area will leak through the organic layer to the other pixel area, causing the pixel area that is not expected to emit light to have a phenomenon of "stealing light", which affects the display effect of the display panel.

[0093] Therefore, the present invention provides a display panel including a plurality of pixel regions and at least a non-pixel region located between two adjacent pixel regions; the display panel further includes: a substrate; a pixel definition layer located on one side of the substrate, including a pixel definition structure located in the non-pixel region and an opening located in the pixel region; a barrier portion disposed on the side of the pixel definition structure away from the substrate; a light-emitting device layer, the light-emitting device layer including an organic common layer, the organic common layer being located on the side of the barrier portion away from the substrate; the barrier portion includes at least one protrusion, the protrusion including a first bottom surface near the substrate, a first sidewall and a second sidewall opposite to each other, the included angle between the first sidewall and the first bottom surface being α, and the included angle between the second sidewall and the first bottom surface being β, wherein one of α and β is greater than the other. In this invention, the asymmetrical protrusions in the barrier portion extend the laying path of the organic common layer, reducing the amount of organic common layer on the side of the protrusion away from the substrate. In fact, the organic common layer can be cut off on the side of the protrusion away from the substrate, so the driving current of a certain pixel area cannot leak to the adjacent pixel area, or only a small amount of current that is insufficient to drive the light-emitting device layer to emit light may be transmitted to the adjacent pixel area. In this way, the leakage phenomenon of the display panel is effectively improved, which is beneficial to improving the overall display effect of the display panel.

[0094] The above is the core idea of ​​this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the embodiments of this invention.

[0095] Figure 1 The image shown is a plan view of a display panel provided in an embodiment of the present invention. Figure 2 As shown Figure 1 A cross-sectional view of the display panel along the AA direction. Figure 3 The diagram shown illustrates a possible structure of the non-pixel region between two adjacent pixel regions. Please refer to the provided text. Figures 1 to 3 The display panel 100 provided in this embodiment of the invention includes a plurality of pixel regions Q0 and at least a non-pixel region Q1 located between two adjacent pixel regions Q0;

[0096] The display panel 100 also includes:

[0097] Substrate 00;

[0098] The pixel definition layer 20 located on one side of the substrate 00 includes a pixel definition structure 21 located in the non-pixel region Q1 and an opening K located in the pixel region Q0;

[0099] The blocking portion 22 is disposed on the side of the pixel definition structure 21 away from the substrate 00;

[0100] The light-emitting device layer 30 includes an organic common layer 31, which is located on the side of the barrier portion 22 away from the substrate 00.

[0101] The barrier portion 22 includes at least one protrusion 220. The protrusion 220 includes a first bottom surface M0 near the substrate 00, a first sidewall M1 and a second sidewall M2 opposite to each other. The angle between the first sidewall M1 and the first bottom surface M0 is α, and the angle between the second sidewall M2 and the first bottom surface M0 is β. One of α and β is greater than the other.

[0102] Optionally, the display panel provided in this embodiment can be a display panel using organic light-emitting diode display technology, i.e., an OLED display panel. The basic structure of the light-emitting device layer 30 of an OLED display panel typically includes an anode 32, an organic common layer 31, and a cathode 33. When a suitable voltage is supplied, holes in the anode 32 and electrons in the cathode 33 combine in the light-emitting device layer 30 to generate light. Compared to thin-film transistor liquid crystal displays, OLED display panels have high visibility and high brightness, and are more energy-efficient, lightweight, and thinner. The opening K mentioned in this invention can be regarded as the area defined by the pixel definition layer 20 for accommodating the light-emitting material layer, i.e., the corresponding pixel area. Other areas in the display area besides the pixel area are non-pixel areas.

[0103] Continue to refer to Figure 2 Optionally, in some other embodiments of the present invention, a driving layer 10 is further disposed between the substrate 00 and the light-emitting device layer 30. The driving layer 10 includes a transistor T, which is used to provide an electrical signal to the anode 32 of the light-emitting device layer 30. Although Figure 2 The film structure only shows the transistor T connected to the anode 32. Optionally, the driving layer 10 also includes other transistors not directly connected to the anode 32 of the light-emitting device layer 30. For example, the driving layer includes multiple pixel driving circuits, each pixel driving circuit including at least two transistors. Optionally, the anode 32 of different light-emitting device layers 30 is connected to different pixel driving circuits. The pixel driving circuit can be, for example, a 2T1C (two transistors and one capacitor), 7T1C, 8T1C, etc. circuit in the related art, and the present invention does not specifically limit it.

[0104] Please refer to Figures 1 to 3In the display panel provided in this embodiment of the invention, the pixel definition layer 20 includes a pixel definition structure 21 located in a non-pixel region and an opening K located in a pixel region. A light-emitting device layer 30 is disposed in the opening K. Under the drive of current, the light-emitting device layer 30 in the opening emits light to achieve the display function. The light-emitting device layer 30 includes an organic common layer 31. When forming the organic common layer 31, a portion of the organic common layer 31 is located in the pixel region Q0, and a portion of the organic common layer 31 is located in the non-pixel region Q1. In this invention, a barrier portion 22 is provided on the side of the pixel definition structure 21 away from the substrate Q0. The barrier portion 22 includes at least one protrusion 220, and the protrusion 220 has an asymmetrical structure. Along the arrangement direction of two adjacent pixel regions Q0, the protrusion 220 located between the two pixel regions includes a first sidewall M1 and a second sidewall M2. The angle between the first sidewall M1 and the first bottom surface M0 is α, and the angle between the second sidewall M2 and the first bottom surface M0 is β. α and β are different. When an organic common layer 31 is formed in pixel region Q0 and non-pixel region Q1, the asymmetrical protrusion 220 in the barrier portion 22 extends the arrangement path of the organic common layer 31, reduces the amount of organic common layer 31 on the side of the protrusion 220 away from the substrate 00, and even allows the organic common layer 31 to be cut off on the side of the protrusion 220 away from the substrate 00. The driving current of a certain pixel region will not be able to leak to the adjacent pixel region, or only a small amount of current that is insufficient to drive the light-emitting device layer 30 to emit light may be transmitted to the adjacent pixel region. In this way, the leakage phenomenon of the display panel is effectively improved, which is beneficial to improving the overall display effect of the display panel.

[0105] In particular, considering that a cathode 33 is disposed on the side of the barrier portion 22 facing away from the substrate 00, when the barrier portion 22 is introduced, if the angles between the first sidewall M1 and the second sidewall M2 and the first bottom surface M0 are both set to be small, the first sidewall M1 and the second sidewall M2 are both relatively gentle, and a relatively gentle organic common layer 31 can be formed on the first sidewall M1 and the second sidewall M2, which does not play an effective blocking role for the organic common layer 31. If the angles between the first sidewall M1 and the second sidewall M2 and the first bottom surface M0 are both set to be large, the first sidewall M1 and the second sidewall M2 are both relatively steep, and the amount of organic common layer 31 formed on the side of the first sidewall M1 and the second sidewall M2 facing away from the substrate will be very small or even cut off. However, at the same time, the amount of cathode 33 formed on the side of the first sidewall M1 and the second sidewall M2 facing away from the substrate will also be reduced, which has a greater impact on the overall impedance of the cathode 33. Therefore, by setting different angles between the two opposing sidewalls of the protrusion 220 in the blocking portion 22 and the first bottom surface, one of the first sidewall M1 and the second sidewall M2 is steeper, while the other is gentler. This allows the steep sidewall to effectively block the organic common layer, while the gentle sidewall ensures that the amount of cathode that can be placed on the side of the first and second sidewalls facing away from the substrate is sufficient, thus avoiding a significant impact on the cathode resistance. Therefore, while improving the problem of sub-pixel light leakage, it also helps to protect and ensure the display effect.

[0106] It should be noted that, Figure 1 The illustration uses a rectangular display panel as an example only and does not limit the actual shape of the display panel. In some other embodiments of the present invention, the shape of the display panel may also be a rounded rectangle, a circle, or other irregular shapes. Furthermore, Figure 1 The image only shows a portion of the pixel area in the display area and does not represent the actual number of pixel areas contained in the display panel. Figure 2 This illustration only shows one type of film structure in the display panel and does not represent the actual number and thickness of the film layers contained in the display panel.

[0107] It should also be noted that, Figure 2 and Figure 3 The embodiment shown only illustrates a scheme in which the barrier portion 22 between adjacent pixel regions Q0 and the non-pixel region Q1 includes only one protrusion 220, but it is not limited thereto. In some other embodiments of the present invention, the same barrier portion 22 may also include two or more protrusions 220, which will be described in subsequent embodiments.

[0108] Please combine Figure 2 and Figure 3In an optional embodiment of the present invention, the opening K includes a first opening K1 and a second opening K2, and the light-emitting device layer 30 includes a first color light-emitting device P1 and a second color light-emitting device P2. The first opening K1 corresponds to the first color light-emitting device P1, and the second opening K2 corresponds to the second color light-emitting device P2. The wavelength of light emitted by the first color light-emitting device P1 is greater than the wavelength of light emitted by the second color light-emitting device P2. The first opening K1 and the second opening K2 are located on both sides of the protrusion 220 and are adjacent to the protrusion 220. Along the first direction F1, the first opening K1 is located on the side of the first sidewall M1 away from the second sidewall M2, and the second opening K2 is located on the side of the second sidewall M2 away from the first sidewall M1. The first direction is the arrangement direction of the first opening K1 and the second opening K2 adjacent to the same protrusion 220. Wherein, α < β.

[0109] This embodiment illustrates one configuration of a protrusion between two light-emitting devices of different wavelengths. Specifically, assuming that the light-emitting devices located on both sides of the same protrusion along a first direction and adjacent to the protrusion are a first-color light-emitting device P1 and a second-color light-emitting device P2, wherein the wavelength of light emitted by the first-color light-emitting device P1 is greater than the wavelength of light emitted by the second-color light-emitting device P2, then the turn-on voltage of the first-color light-emitting device P1 is less than the turn-on voltage of the second-color light-emitting device P2. That is, assuming that of the adjacent first-color light-emitting device P1 and second-color light-emitting device P2, only the second-color light-emitting device P2 needs to emit light, while the first-color light-emitting device P1 does not need to emit light, only the driving voltage needs to be provided to the second-color light-emitting device P2. In related technologies, since the organic common layer between the first color light-emitting device P1 and the second color light-emitting device P2 is connected, a larger driving voltage provided to the second color light-emitting device P2 may be transmitted to the first color light-emitting device P1 through the organic common layer. Since the first color light-emitting device P1 requires a smaller start-up voltage, when a larger driving voltage provided to the second color light-emitting device P2 is transmitted to the first color light-emitting device P1, it is very likely that the first color light-emitting device P1 will be lit up by itself, affecting the overall display effect. In this invention, after introducing a protrusion in the barrier portion 22 between the first color light-emitting device P1 and the second color light-emitting device P2, the second sidewall M2 adjacent to the second color light-emitting device P2 in the protrusion is set to be relatively steep. This results in a large step difference between the top of the protrusion at the position of the second sidewall M2 and the first bottom surface. The organic common layer at the top position of the second sidewall M2 is very likely to be broken, or only a small thickness of organic common layer can be retained at the aforementioned top position. When the driving voltage provided to the second color light-emitting device P2 reaches the top position corresponding to the second sidewall M2, it will not be able to be further transmitted to the first color light-emitting device P1. Or, due to the small thickness and large impedance of the organic common layer at the top position, only a small voltage may be transmitted to the first color light-emitting device P1, which is insufficient to drive the first color light-emitting device P1 to emit light. This effectively improves the phenomenon of possible light leakage of the first color light-emitting device P1 and is beneficial to improving the display effect of the display panel.

[0110] Continue to combine Figure 2 and Figure 3In an optional embodiment of the present invention, 0°<α≤70°, 60°≤β≤100°. Specifically, in the protrusion 220, the steeper the first sidewall M1, the better the effect of improving leakage current between sub-pixels. Considering that the first sidewall M1 is adjacent to the first color light-emitting device P1 with a smaller start-up voltage, even if the electrical signal provided to the first color light-emitting device P1 leaks to the second color light-emitting device P2, it is not enough to light up the second color light-emitting device P2. Therefore, the first sidewall M1 in the protrusion can be set to 0°<α≤70° without increasing the process difficulty. In the first protrusion 211, the second sidewall M2 is adjacent to the second light-emitting device with a larger start-up voltage. The steeper the second sidewall M2, the better it is to improve the blocking effect of leakage current. For example, the step difference between the top and bottom of the second sidewall M2 can be increased to increase the leakage current transmission path and improve the attenuation of leakage current, thereby avoiding the occurrence of stealth lighting. Within the limits of the process, the angle between the second sidewall M2 and the first bottom surface can be set to 60°≤β≤100° to better improve the phenomenon of light leakage.

[0111] Optionally, 40°≤α≤60°, 30°≤α≤50°; 90°≤β≤100°, 80°≤β≤90°.

[0112] In an optional embodiment of the present invention, the second color light-emitting device P2 is a blue light-emitting device. Optionally, the display panel includes red, green, and blue light-emitting devices. These three different colored light-emitting devices emit light to achieve the color display function of the display panel. Among the aforementioned three colors, the blue light-emitting device has the shortest wavelength and the highest turn-on voltage. Therefore, setting the second color light-emitting device P2 as a blue light-emitting device helps to avoid the large driving voltage provided to the blue light-emitting device being transmitted to other adjacent color light-emitting devices, thus preventing other color light-emitting devices from "stealing" light. Optionally, the first color light-emitting device P1 is a red or green light-emitting device.

[0113] Continue to combine Figure 2 and Figure 3 In an optional embodiment of the present invention, the minimum distance between the blocking part 22 and the first opening K1 along the direction from the first opening K1 to the second opening K2 is D1, and the minimum distance between the blocking part 22 and the second opening K2 is D2, wherein D1 < D2.

[0114] Specifically, when the activation voltage of the second color light-emitting device P2 located in the second opening K2 is large, the leakage current to other adjacent color light-emitting devices will be large. In this embodiment, the minimum distance D2 between the blocking part 22 and the adjacent second opening K2 is greater than the minimum distance D1 between the blocking part 22 and the adjacent first opening K1. This helps to extend the leakage current path from the second color light-emitting device P2 to the first color light-emitting device P1, and reduces the amount of electrical signal transmitted from the second color light-emitting device P2 to the first color light-emitting device P1. Therefore, it also helps to improve the leakage current phenomenon and avoid the occurrence of the light-emitting device stealth lighting.

[0115] It should be noted that the minimum distance D1 between the blocking portion 22 and the first opening K1 mentioned in this embodiment of the invention refers to the minimum distance between the first sidewall M1 of the protrusion 220 in the blocking portion 22 facing the first opening K1 and the edge of the first opening K1 facing the blocking portion 22, in the blocking portion 22 and the adjacent first opening K1. Similarly, the minimum distance D2 between the blocking portion 22 and the second opening K2 mentioned in this embodiment of the invention refers to the minimum distance between the second sidewall M2 of the protrusion 220 in the blocking portion 22 facing the second opening K2 and the edge of the second opening K2 facing the blocking portion 22.

[0116] In one optional embodiment of the present invention, the total thickness of the protrusion and the pixel definition structure 21 along the direction perpendicular to the substrate 00 is H1, where 1.5μm≤H1≤2.5μm.

[0117] It should be noted that the total thickness of the protrusion 220 and the pixel definition structure 21 directly determines the amount of organic common layer that can be accommodated on the side of the protrusion facing away from the pixel definition structure 21. When the total thickness of the two is less than 1.5 μm, the thickness of the organic common layer that can be accommodated on the side of the protrusion facing away from the pixel definition structure 21 will be relatively large, which will not significantly improve leakage current, meaning that the phenomenon of "sneak light" may still occur. When the total thickness of the two is greater than 2.5 μm, although the thickness of the organic common layer that can be accommodated on the side of the protrusion facing away from the pixel definition structure 21 is greatly reduced, the overall thickness of the display panel is also increased. Therefore, in this embodiment of the invention, setting the total thickness of the protrusion and the pixel definition structure 21 to 1.5 μm ≤ H1 ≤ 2.5 μm can effectively reduce the amount of organic common layer on the side of the protrusion facing away from the substrate 00, increase the impedance of the organic common layer, and avoid the occurrence of "sneak light" without affecting the thickness of the display panel, thus also helping to meet the requirements for thinner display panels. Alternatively, 1μm≤H1≤2μm, or 1.2μm≤H1≤2.4μm, etc.

[0118] Figure 4The diagram shows another structural schematic of the non-pixel region between two adjacent pixel regions. In an optional embodiment of the present invention, the opening K includes a first opening K1 and a second opening K2. The first opening K1 and the second opening K2 are located on both sides of the protrusion 220 and are adjacent to the protrusion 220. The first opening K1 and the second opening K2 are arranged along the first direction F1. The protrusion 220 includes a first protrusion 211 and a second protrusion 212. Along the first direction F1, the first protrusion 211 is located between the first opening K1 and the second protrusion 212, and the first sidewall of the first protrusion 211 is adjacent to the first opening K1. The second protrusion 212 is located between the second opening K2 and the first protrusion 211, and the first sidewall of the second protrusion 212 is adjacent to the second opening K2.

[0119] Please refer to Figure 4 This embodiment illustrates another arrangement of the protrusions in the barrier portion 22. Specifically, this embodiment shows a scheme in which the same barrier portion 22 includes two protrusions, namely a first protrusion 211 and a second protrusion 212. The arrangement direction of the first protrusion 211 and the second protrusion 212 is the same as the arrangement direction of the first opening K1 and the second opening K2. The first protrusion 211 is disposed between the second protrusion 212 and the first opening K1, and the second protrusion 212 is disposed between the first protrusion 211 and the second opening K2. The first sidewalls with gentler slopes in the first protrusion 211 and the second protrusion 212 are adjacent to the first opening K1 and the second opening K2, respectively. When two protrusions are introduced into the barrier portion 22 between the first opening K1 and the second opening K2, the arrangement of the two protrusions helps to extend the layout path of the organic common layer and the electrical signal transmission path. The longer the electrical signal transmission path, the more severe the signal attenuation. Therefore, even if the electrical signal provided to the second opening K2 is transmitted in the organic common layer, the amount of signal that can be transmitted to the first opening K1 will be reduced, thus helping to reduce the phenomenon of sub-pixel stealth lighting at the first opening K1. In addition, the space between the two first protrusions 211 can also accommodate more organic common layers, thereby reducing the amount of organic common layer on the side of the first protrusion 211 facing away from the substrate 00, increasing the impedance of the organic common layer, and further reducing the amount of electrical signal that may be transmitted to the first opening K1, thereby effectively preventing the phenomenon of sub-pixel stealth lighting at the first opening K1.

[0120] Figure 5 The diagram shows a plan view of a first protrusion 211 and a second protrusion 212 located between two adjacent openings. Please refer to... Figure 4 and Figure 5 In an optional embodiment of the present invention, the shape of the orthographic projection of the first protrusion 211 on the substrate 00 is the same as the shape of the orthographic projection of the second protrusion 212 on the substrate 00.

[0121] Specifically, when a first protrusion 211 and a second protrusion 212 are introduced between two adjacent openings, optionally, the first protrusion 211 and the second protrusion 212 can be formed in the same process. For example, when a masking process is combined with etching and other processes to form the first protrusion 211 and the second protrusion 212, the shapes of the openings on the mask corresponding to the first protrusion 211 and the second protrusion 212 are the same. When the first protrusion 211 and the second protrusion 212 are symmetrically arranged, the corresponding openings on the mask can also be symmetrically arranged, which helps to simplify the mask manufacturing process and, in turn, simplifies the overall manufacturing process of the display panel.

[0122] Optionally, Figure 4 The illustrated embodiment uses an acute angle α between the first sidewall M1 and the first bottom surface M0, and an obtuse angle β between the second sidewall M2 and the first bottom surface M0 as an example. When the angle β between the second sidewall M2 and the first bottom surface M0 is acute, it can be seen that the end of the second sidewall M2 connected to the first bottom surface M0 is offset towards the first sidewall, so that the inner diameter of the bottom of the first groove 221 formed between the first protrusion 211 and the second protrusion 212 is larger than the inner diameter of the groove opening. This arrangement is equivalent to increasing the amount of organic common layer that the first groove 221 can accommodate. This effectively extends the laying path of the organic common layer and the electrical signal transmission path, increases the attenuation of the electrical signal, and reduces the amount of organic common layer accommodated at the top of the first protrusion 211 and the second protrusion 212. This reduces the amount of electrical signal transmitted through the organic common layer to the sub-pixel corresponding to the first opening K1, which is more conducive to improving the phenomenon of sub-pixel stealing light.

[0123] Figures 6 to 8 The diagram shows another structural schematic of the non-pixel region between two adjacent pixel regions. In an optional embodiment of the present invention, a first groove 221 is formed between the second sidewall of the first protrusion 211 and the second sidewall M2 of the second protrusion 212. The protrusion includes a first top surface M4 facing away from the substrate 00. The angle between the first top surface M4 and the second sidewall M2 is θ, where 85°≤θ<180° and β≤90°.

[0124] Specifically, Figures 6 to 8 The illustrated embodiments show several feasible structures for the first protrusion 211, the second protrusion 212, and the first groove 221 located between the first protrusion 211 and the second protrusion 212 when a first protrusion 211 and a second protrusion 212 are introduced into the barrier portion 22 between the first opening K1 and the second opening K2. Figure 6The embodiment shown is illustrated using an example where the angle θ between the first top surface M4 and the second side wall M2 is obtuse and the bottom surface of the first groove 221 is arc-shaped. Figure 7 The embodiment shown is illustrated using the example where the angle θ between the first top surface M4 and the second side wall M2 is a right angle and the bottom surface of the first groove 221 is a plane. Figure 8 Taking the example of an acute angle θ between the first top surface M4 and the second sidewall M2 and the bottom surface of the first groove 221 being arc-shaped, in the three embodiments, the angle β between the second sidewall M2 and the first bottom surface is less than or equal to 90°. The first protrusion 211, the second protrusion 212, and the first groove 221 disposed between the first protrusion 211 and the second protrusion 212 can be formed by masking and etching processes. The specific manufacturing process will be described in detail in the subsequent embodiments. Therefore, while extending the layout path of the organic common layer and the electrical signal transmission path and improving the phenomenon of light stealing by sub-pixels, it is also beneficial to simplify the manufacturing process.

[0125] It should be noted that when the angle between the first top surface M4 and the second sidewall M2 is not 90 degrees, the first top surface M4 will have an inclined structure. The amount of organic common layer accommodated on the inclined first top surface M4 will be reduced. At the same time, since the first top surface M4 has an inclined structure, a protruding sharp corner will be formed at the junction of the first top surface M4 and the first sidewall, or at the junction of the first top surface M4 and the second sidewall M2. The thickness of the organic common layer that can be accommodated above the sharp corner will be less than the thickness of the organic common layer that can be accommodated at other locations. The impedance of the organic common layer at the sharp corner will increase, which is more conducive to reducing the amount of electrical signal transmitted from the second opening K2 to the first opening K1, and thus more conducive to improving the phenomenon of sub-pixel stealth lighting.

[0126] Optionally, the inner diameter of the first groove 221 is less than 2μm, so that the structure corresponding to the first protrusion 211, the second protrusion 212, and the first groove 221 in the present invention can be applied to products with high pixel density and small spacing between two adjacent openings, thereby improving the problem of sub-pixel light stealing in this type of product.

[0127] Optionally, Figures 6 to 8 In the illustrated embodiment, the total thickness of the pixel definition structure 21 and the barrier portion 22 can be set to 1.5μm to 2.1μm. The depth of the first groove 221 is less than the total thickness mentioned above, and the depth of the first groove 221 can be set to 0.7μm to 1.3μm. This ensures that the first groove 221 can have a large space to accommodate the organic common layer while not penetrating the pixel definition structure 21, thereby reducing the amount of organic common layer accommodated on the first top surface M4 of the first protrusion 211 and the second protrusion 212.

[0128] Figure 9 and Figure 10 The diagram shows another structural schematic of the non-pixel region between two adjacent pixel regions. In an optional embodiment of the present invention, the blocking part 22 further includes at least one boss 213, which is located between the first protrusion 211 and the second protrusion 212. The boss 213 and the first protrusion 211 and the boss 213 and the second protrusion 212 respectively form a second groove 222.

[0129] Specifically, this embodiment illustrates a scheme in which a first protrusion 211 and a second protrusion 212 are introduced into the barrier portion 22 between the first opening K1 and the second opening K2, and four bosses 213 are introduced between the first protrusion 211 and the second protrusion 212. The number of bosses 213 is shown for illustrative purposes only and is not limited to the actual number of bosses 213 contained between the first protrusion 211 and the second protrusion 212. Optionally, when bosses 213 are introduced between the first protrusion 211 and the second protrusion 212, the arrangement direction of the bosses 213 and the arrangement direction of the bosses 213 with the first protrusion 211 and the second protrusion 212 are the same as the arrangement direction of the first opening K1 and the second opening K2 located on both sides of the barrier portion 22 and respectively adjacent to the barrier portion 22. Thus, along the arrangement direction of the first opening K1 and the second opening K2, second grooves 222 are formed between adjacent protrusions 213, between the first protrusion 211 and its adjacent protrusion 213, and between the second protrusion 212 and its adjacent protrusion 213, respectively. This is equivalent to increasing the number of grooves contained in the barrier portion, which is more conducive to extending the layout path of the organic common layer between the first opening K1 and the second opening K2 and the transmission path of the electrical signal, and increasing the volume of the organic common layer that can be accommodated in the groove. Therefore, it is more conducive to reducing the amount of common layer that can be accommodated on the upper surface of the first protrusion 211, the second protrusion 212 and the protrusion 213, and more conducive to increasing the impedance of the organic common layer, improving the leakage problem from the second opening K2 to the first opening K1, and avoiding the occurrence of sub-pixel stealing.

[0130] Optionally, Figure 9 and Figure 10 In the illustrated embodiment, the inner diameter of the groove opening of the second groove 222 can be set to less than 2μm, so that the structure corresponding to the first protrusion 211, the second protrusion 212, and the first groove 221 in the present invention can be applied to products with high pixel density and small spacing between two adjacent openings, thereby improving the problem of sub-pixel light stealing in this type of product.

[0131] Figure 9 The illustrated embodiment shows that the second groove 222 has a trapezoidal cross-section. Figure 10The illustrated embodiment shows that the second groove 222 has an inverted trapezoidal cross-section, and both can serve to accommodate the organic common layer. Figure 9 The trapezoidal structure provided in the illustrated embodiment has a larger volume and can accommodate more organic common layers, which is more conducive to improving the problem of sub-pixel light stealing.

[0132] Continue to refer to Figure 9 and Figure 10 In an optional embodiment of the present invention, in the direction perpendicular to the substrate 00, the depth of at least one second groove 222 is H2, 0.7μm≤H2≤1.3μm.

[0133] It should be noted that when the inner diameter range of the second groove 222 is fixed, the depth of the second groove 222 directly determines the amount of organic common layer that can be accommodated in the second groove 222. If the depth of the second groove 222 is too small, for example, less than 0.7 μm, the amount of organic common layer that can be accommodated is small, and the amount of organic common layer that can be accommodated on the surfaces of the first protrusion 211, the second protrusion 212, and the boss 213 is still relatively large, and the improvement in leakage is not significant. If the depth of the second groove 222 is too large, for example, greater than 1.3 μm, the second groove 222 may penetrate the pixel definition structure 21, affecting the performance of other structures in the panel. Therefore, in this embodiment, setting the depth of the second groove 222 to 0.7 μm to 1.3 μm is beneficial to ensuring the amount of organic common layer that can be accommodated in the groove, avoiding the phenomenon of light leakage, and without affecting other structures in the display panel.

[0134] Optionally, the depth of the second groove 222 satisfies 0.8μm≤H2≤1.2μm, or 0.9μm≤H2≤1.1μm, or 1μm≤H2≤1.3μm, etc. The present invention does not impose specific limitations on this.

[0135] Continue to refer to Figure 9 and Figure 10 In an optional embodiment of the present invention, the first protrusion 211, the second protrusion 212 and the boss 213 are located on the same plane away from the surface of the pixel definition structure 21.

[0136] When the upper surfaces of the first protrusion 211, the second protrusion 212, and the boss 213 are coplanar, the first protrusion 211, the second protrusion 212, and the boss 213 can be manufactured using masks with the same transmittance, which simplifies the manufacturing process. Optionally, please refer to... Figure 9 and Figure 10 When multiple protrusions 213 are introduced between the first protrusion 211 and the second protrusion 212, the shape and size of the multiple protrusions 213 can be set to be the same, which also helps to simplify the overall manufacturing process of the display panel.

[0137] Figure 11 The diagram shown illustrates another structural representation of the non-pixel region between two adjacent pixel regions. Please refer to the provided text. Figure 11 In an optional embodiment of the present invention, at least one of the first protrusion 211, the second protrusion 212 and the boss 213 has a raised arc surface away from the surface of the pixel definition structure 21.

[0138] This embodiment illustrates a scheme in which three bosses 213 are provided between the first protrusion 211 and the second protrusion 212, and the shapes and sizes of the three bosses 213 are not exactly the same. In this embodiment, the surfaces of the first protrusion 211, the second protrusion 212, and the bosses 213 are all curved surfaces. In actual manufacturing, this structure can be formed by introducing masks with different transmittance. For example, the mask corresponding to the groove has the highest transmittance, the mask corresponding to the smaller boss 213 has the second highest transmittance, and the mask corresponding to the larger first and second protrusions and the bosses 213 has the lowest transmittance. The forming process is simple.

[0139] When the surfaces of the first protrusion 211, the second protrusion 212, or the boss 213 facing away from the pixel definition structure are curved, the amount of organic common layer that can be accommodated above the curved surface is smaller compared to a planar structure. The impedance of the corresponding organic common layer is larger, which is more conducive to reducing leakage from the second opening K2 to the first opening K1 and is more conducive to preventing the phenomenon of sub-pixel stealing light. Moreover, when the surfaces of the first protrusion 211, the second protrusion 212, and the boss 213 facing away from the pixel definition structure 21 are curved, it can also increase the layout path of the organic light-emitting layer and the electrical signal transmission path, reduce the amount of electrical signal transmitted from the first opening K1 to the second opening K2, and prevent the phenomenon of stealing light.

[0140] It should be noted that, Figure 11 Only three bosses 213 are shown between the first protrusion 211 and the second protrusion 212, and the heights of the three bosses 213 are not exactly the same. However, the number, shape, and thickness of the bosses 213 included between the first protrusion 211 and the second protrusion 212 are not limited.

[0141] Figure 12 The diagram shows another structural schematic of the non-pixel region between two adjacent pixel regions. In an optional embodiment of the present invention, at least one of the first protrusion 211, the second protrusion 212, and the boss 213 includes a recess 223. The recess 223 is recessed from the surface of the protrusion or boss 213 away from the pixel definition structure 21 toward the pixel definition structure 21. The depth of the recess 223 is greater than the depth of the second groove 222.

[0142] This embodiment illustrates a scheme incorporating recesses 223 on the first protrusion 211 and the second protrusion 212, but does not limit the actual position of the recesses 223; recesses 223 can also be provided on the boss 213. When a recess 223 is added to at least one of the first protrusion 211, the second protrusion 212, and the boss 213, the recess 223 can also accommodate the organic common layer. This extends the routing path of the organic common layer and the electrical signal transmission path, while also helping to further reduce the amount of organic common layer that can be accommodated on the upper surfaces of the first protrusion 211, the second protrusion 212, and the boss 213. This increases the impedance of the organic common layer in these areas, which helps to further reduce leakage from the second region to the first region and avoids the occurrence of light leakage.

[0143] In this embodiment, the depth of the recess 223 is greater than the depth of the second groove 222 between the first protrusion 211 and the boss 213, between the bosses 213 and the bosses 213, and between the second protrusion 212 and the boss 213. This increases the amount of organic common layer that can be accommodated in the recess 223 and increases the step difference between the top and bottom of the recess 223. This increases the possibility that the organic common layer will break at the top of the recess 223, which is beneficial for blocking the path of leakage current transmission and effectively avoiding the problem of sub-pixel stealing light.

[0144] Optionally, the inner diameter of the opening of the recess 223 is less than 2 μm. The depth of the recess 223, while greater than the depth of the second groove 222, must also be less than the height of the first protrusion 211, the second protrusion 212, or the boss 213 to prevent the recess 223 from penetrating through the first protrusion 211, the second protrusion 212, or the boss 213. The depth of the second groove 222 can be referenced from the depth of the second groove 222 in the above embodiments, for example, it can be 0.7 μm ≤ H2 ≤ 1.3 μm.

[0145] Optionally, the first protrusion 211, the second protrusion 212, and the boss 213 can be formed by introducing an organic mask combined with an exposure process, and the recess 223 can be formed by introducing a hard mask layer combined with an etching process. The detailed manufacturing process will be described in subsequent embodiments.

[0146] Figure 12 The embodiment shown only illustrates a scheme in which a recess 223 is provided on the first protrusion 211 and a boss 213, but does not limit the location of the recess 223.

[0147] Figure 13The diagram shows another structural schematic of the non-pixel region between two adjacent pixel regions. In an optional embodiment of the present invention, the height of the first protrusion 211 and the second protrusion 212 is greater than or equal to the height of the boss 213, and both the first protrusion 211 and the second protrusion 212 are provided with a recess 223.

[0148] Specifically, this embodiment shows a scheme in which recesses 223 are provided on the first protrusion 211, the second protrusion 212, and the boss 213. By increasing the number of recesses 223, the amount of organic common layer that can be accommodated by the recesses 223 is increased, thereby reducing the amount of organic common layer that can be accommodated on the first protrusion 211, the second protrusion 212, and the boss 213. It can even achieve the effect of disconnecting and blocking the signal transmission path at the junction of the first protrusion 211, the second protrusion 212, and the recesses 223, thus making it more beneficial to improve the phenomenon of sub-pixel stealth lighting.

[0149] Optionally, the height of the first protrusion 211 and the second protrusion 212 is greater than or equal to the height of the boss 213. When providing the recess 223, in addition to providing it on the first protrusion 211 and the second protrusion 212, the recess 223 can also be provided on the boss 213 with a larger height, thereby increasing the amount of organic common layer accommodated in the recess 223 as a whole. Of course, in some other embodiments of the present invention, in addition to providing the recess 223 on the first protrusion 211 and the second protrusion 212, the recess 223 can also be provided on all bosses 213, so as to further increase the amount of organic common layer accommodated in the recess 223 as a whole, reduce the amount of organic common layer accommodated on the upper surface of the first protrusion 211, the second protrusion 212 and the boss 213, and further improve the phenomenon of light leakage.

[0150] Continue to refer to Figure 13 In an optional embodiment of the present invention, the light-emitting device layer 30 further includes an anode 32, which is located on the side of the pixel definition structure 21 facing the substrate 00. In the direction perpendicular to the substrate 00, the distance between the surface of the anode 32 away from the substrate 00 and the bottom surface of the recess 223 is D0, where 0.7μm≤D0≤1μm.

[0151] When a recess 223 is formed on at least one of the first protrusion 211, the second protrusion 212, and the boss 213, the recess 223 must not penetrate the pixel definition structure 21 to avoid exposing the anode 32 and affecting it. If the distance between the anode 32 and the recess 223 is too small, for example, less than 0.7 μm, the anode 32 is very likely to be exposed during the etching process to form the recess 223. When the anode 32 is electrically connected to the organic common layer, it will interfere with the signal of the anode 32 and affect the light emission reliability of the display panel. If the distance between the anode 32 and the recess 223 is too large, for example, greater than 1 μm, the depth of the recess 223 may be small, and the amount of organic common layer it can accommodate may be small, resulting in insignificant improvement in leakage. Therefore, in this embodiment, the distance between the anode 32 and the recess 223 is set to 0.7μm≤D0≤1μm. This not only protects the anode 32 and prevents the recess 223 from being too deep and exposing the anode 32, thus affecting the reliability of light emission, but also ensures that the recess 223 has a certain depth to accommodate more organic common layers and increases the step difference between the top and bottom of the groove, thereby effectively improving the phenomenon of light leakage caused by leakage.

[0152] Figure 14 The diagram shown illustrates the relative positional relationship between the second color light-emitting device P2 and the blocking part 22 provided in an embodiment of the present invention. Figure 15 As shown Figure 14 A cross-sectional view along the BB direction is shown. In an optional embodiment of the present invention, the blocking portion 22 is disposed around the second color light-emitting device P2. It should be noted that, to clearly illustrate the relative positional relationship between the blocking portion 22 and the second color light-emitting device P2, Figure 14 The barrier portion 22 and the pixel definition structure 21 are filled with different materials, but in fact the barrier portion 22 and the pixel definition structure 21 can be made of the same material.

[0153] When the display panel includes at least three different colored light-emitting devices, assuming that the turn-on voltage of the second colored light-emitting device P2 is the largest, a feasible implementation of setting a barrier 22 between the second colored light-emitting device P2 and other adjacent light-emitting devices is to surround the second colored light-emitting device P2 with the barrier 22. In this way, the barrier 22 can block or reduce the leakage current of the electrical signal provided to the second colored light-emitting device P2 to any other colored light-emitting device adjacent to the second colored light-emitting device P2, thereby helping to improve the phenomenon of sub-pixel stealth lighting. When the barrier portion 22 surrounds the second color light-emitting device P2, in the protrusion of the barrier portion 22 adjacent to the second color light-emitting device P2, its second sidewall M2 is adjacent to the second color light-emitting device P2, and the first sidewall M1 is located on the side of the second sidewall M2 away from the second color light-emitting device P2. The angle β between the second sidewall M2 and the first bottom surface M0 is greater than the angle α between the first sidewall M1 and the first bottom surface M0. That is, the sidewall with a steeper slope in the protrusion is adjacent to the second color light-emitting device P2, while the sidewall with a gentler slope is positioned away from the second color light-emitting device P2 relative to the steeper sidewall. The second sidewall M2 adjacent to the second color light-emitting device P2 in the protrusion 220 is made relatively steep, so that the top of the protrusion at the position of the second sidewall M2 is... The large step difference between the first bottom surfaces M0 means that the organic common layer is very likely to break at the top of the second sidewall M2, or only a small thickness of organic common layer can be retained at the aforementioned top position. When the driving voltage provided to the second color light-emitting device P2 reaches the top position corresponding to the second sidewall M2, it will not be able to be further transmitted to other light-emitting devices adjacent to the second color light-emitting device P2. Or, due to the small thickness and large impedance of the organic common layer at the top position, only a small voltage may be transmitted to other light-emitting devices adjacent to the second color light-emitting device P2, but it is not enough to drive the other color light-emitting devices adjacent to the second color light-emitting device P2 to emit light. This effectively improves the phenomenon of possible light leakage of sub-pixels and helps to improve the display effect of the display panel.

[0154] Figure 16 The diagram illustrates a relative positional relationship between the second color light-emitting device and the blocking portion 22 according to an embodiment of the present invention. In an optional embodiment of the present invention, the protrusion on the blocking portion 22 is a ring-shaped closed structure. It should be noted that, to clearly illustrate the relative positional relationship between the blocking portion 22 and the second color light-emitting device P2, Figure 16 The barrier portion 22 and the pixel definition structure 21 are filled with different materials, but in fact the barrier portion 22 and the pixel definition structure 21 can be made of the same material.

[0155] Please refer to Figure 16 and refer to appropriately Figure 15This embodiment illustrates a scheme in which the protrusions on the barrier portion 22 are annular closed structures when the barrier portion 22 is provided around the second color light-emitting device P2. This embodiment is described using the example of the same barrier portion 22 including two protrusions 220, but the number of protrusions 220 actually included in the barrier portion 22 is not limited. In some other embodiments of the present invention, the same barrier portion 22 may also include multiple protrusions 220.

[0156] When the protrusion 220 is an annular closed structure, and two protrusions 220 are provided between the two openings K, it is equivalent to increasing the volume of the groove between the protrusions, increasing the amount of organic common layer that the groove can accommodate, thereby reducing the amount of organic common layer at the top of the protrusion 220, increasing the impedance of this part of the organic common layer, reducing the leakage phenomenon between two adjacent openings, and is more conducive to improving the problem of sub-pixel stealth lighting. In the scheme of setting the protrusion as an annular closed structure, the electrical signal provided to the second color light-emitting device is blocked by the annular closed protrusion, and the leakage from all directions is reduced, thus being more conducive to improving the problem of sub-pixel stealth lighting.

[0157] In one optional embodiment of the present invention, please refer to Figure 2 The barrier portion 22 and the pixel definition structure 21 are made of the same material. In actual display panel manufacturing, the pixel definition structure 21 and the barrier portion 22 can be formed by processing the same film layer, which simplifies the overall manufacturing process of the display panel and improves production efficiency. How to process the same film layer to form the pixel definition structure 21 and the barrier portion 22 will be described in detail in subsequent embodiments.

[0158] Figure 17 The diagram shown is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention. Based on the same inventive concept, the present invention also provides a method for manufacturing a display panel, comprising:

[0159] S01. A substrate 00 is provided, and an array layer 10 is formed on the substrate 00. For example, please refer to [reference needed]. Figure 18 , Figure 18 The diagram shown is a schematic diagram of a display panel in which an array layer 10 is formed on a substrate 00, according to an embodiment of the present invention.

[0160] S02. An anode 32 is formed on the side of the array layer 10 facing away from the substrate 00. The anode 32 is electrically connected to the array layer 10. Please refer to [reference needed]. Figure 19 , Figure 19 The diagram shows a structure in which an anode 32 is formed on the array layer 10;

[0161] S03. A pixel definition layer 20 is formed on the side of the anode 32 facing away from the substrate 00. Please refer to [reference needed]. Figure 20 , Figure 20 The diagram shows a structure in which a pixel definition layer 20 is formed on the side of the anode 32 facing away from the substrate 00.

[0162] S04. A first mask 41 is provided on the side of the pixel definition layer 20 facing away from the substrate 00. The first mask 41 includes at least a fully transparent area A2, a semi-transparent area A1, and an opaque area A0. Please refer to [reference needed]. Figure 21 , Figure 21 The diagram shows a structure in which a first mask 41 is set on one side of the pixel definition layer 20;

[0163] S05, Exposure Processing, please refer to... Figure 22 An opening is formed in the fully transparent region A2 of the pixel definition layer 20 to expose the anode 32. A pixel definition structure 21 and a barrier portion 22 are formed in the opaque region A0 and the semi-opaque region A1. The barrier portion 22 is disposed on the side of the pixel definition structure 21 away from the substrate 00. The barrier portion 22 includes at least one protrusion 220, which includes a first bottom surface M0 near the substrate 00, a first sidewall M1, and a second sidewall M2. The angle between the first sidewall M1 and the first bottom surface M0 is α, and the angle between the second sidewall M2 and the first bottom surface M0 is β, wherein one of α and β is greater than the other. Figure 22 The diagram shows a structure in which a pixel definition structure 21 and a blocking part 22 are formed on a pixel definition layer 20.

[0164] S06, please refer to Figure 23 An organic common layer 31 is formed at least in the opening of the pixel region, wherein, Figure 23 The diagram shows a structural schematic of forming an organic common layer 31.

[0165] Optionally, after forming the organic common layer 31, the process may further include forming a cathode 33 and an encapsulation layer on the side of the organic common layer 31 facing away from the substrate 00. The encapsulation layer encapsulates the light-emitting device layer 30 to isolate external water and oxygen from the light-emitting device layer 30, thereby preventing water and oxygen from affecting the performance of the light-emitting device layer 30.

[0166] It should be noted that the above embodiments only show a scheme in which a first protrusion 211 and a second protrusion 212 are formed in the same barrier portion 22 and three bosses 213 are formed between the first protrusion 211 and the second protrusion 212. However, the barrier portion 22 formed by the above method is not limited to... Figure 22 The structure shown does not limit the number of protrusions and bosses 213 included in the barrier portion 22. For example, the barrier portion 22 may also include only one protrusion 220. Please refer to [reference needed]. Figure 24 , Figure 24The diagram shows another structural schematic of forming a pixel definition structure 21 and a blocking portion 22 on the pixel definition layer 20. Optionally, for Figure 24 In the structure shown, in the non-pixel region between two adjacent openings K, along the arrangement direction of the two openings, the width of a single fully transparent region A2 can be set to 1.0μm to 2.8μm, and the opaque region A0 can be set to 2.5μm to 10μm. Along the direction perpendicular to the substrate 00, the height of the protrusion in the barrier portion 22 is 1μm to 1.5μm, and the height of the pixel definition structure 21 in the semi-transparent region A1 is 1μm.

[0167] for Figure 22 Optionally, in the non-pixel region between two adjacent openings, along the arrangement direction of the two openings, the width of the fully transparent region A2 between the semi-transparent region A1 and the opaque region A0 is 2μm to 2.8μm, and the distance between the highest point of the protrusion and the surface of the pixel definition layer 20 facing the array layer 10, i.e., the maximum thickness of the pixel definition layer 20, is 1.5μm to 2.1μm.

[0168] The protrusions formed using the above method have an asymmetrical structure. Along the arrangement direction of two adjacent pixel regions, the protrusion located between the two pixel regions includes a first sidewall M1 and a second sidewall M2. The angle between the first sidewall M1 and the first bottom surface M0 is α, and the angle between the second sidewall M2 and the first bottom surface M0 is β, where α and β are different. When forming an organic common layer in pixel regions and non-pixel regions, the asymmetrical protrusions in the barrier portion 22 extend the laying path of the organic common layer, reducing the amount of organic common layer on the side of the protrusion away from the substrate 00. The organic common layer can even be cut off on the side of the protrusion away from the substrate 00. The driving current of a certain pixel region will not leak to adjacent pixel regions, or only a small amount of current insufficient to drive the light-emitting device layer 30 to emit light may be transmitted to adjacent pixel regions. Thus, the leakage phenomenon of the display panel is effectively improved, thereby enhancing the overall display effect of the display panel.

[0169] Figure 25 The diagram shown is another flowchart of the manufacturing method of the fixed display panel provided in this embodiment of the invention. Please refer to it. Figure 25 In an optional embodiment of the present invention, after forming the opening, the pixel definition structure 21, and the blocking portion 22, that is, after the above-described step S05, the method further includes:

[0170] S10, please refer to Figure 26 A first hard mask layer 51 is formed on the side of the opening, pixel definition structure 21, and barrier portion 22 facing away from the substrate 00. Figure 26 The diagram shows a structure with a first hard mask layer 51. Optionally, the first hard mask layer 51 is an IZO layer.

[0171] S11, please refer to Figure 27 A first organic film 52 is formed on the side of the first hard mask layer 51 facing away from the substrate 00. The first organic film 52 is processed to form a non-opening region Q00 and an opening region Q01. Along a direction perpendicular to the substrate 00, the opening region Q01 of the first organic film 52 at least overlaps with the protrusion 22, and the opening region Q01 does not overlap with the opening K. Figure 27 The diagram shows a structural schematic of a first organic film 52 formed above a first hard mask layer 51. Optionally, the first organic film 52 can be photoresist or the like. The fully transparent area A2 of the first organic film 52 overlaps with the protrusion 22, and if the barrier portion 22 also includes a boss 213, it can also overlap with the boss 213. However, the fully transparent area A2 does not overlap with the groove between the protrusions. Optionally, the method for forming the non-opening area Q00 and the opening area Q01 on the first organic film 52 can be as follows: a mask is introduced onto the side of the first organic film 52 away from the first hard mask layer 51. The mask has fully transparent and opaque areas. Through exposure processing, the opening area Q01 will be formed on the first organic film 52 at the position corresponding to the fully transparent area of ​​the mask, and the non-opening area Q00 will be formed at the position corresponding to the opaque area of ​​the mask. The opening area Q01 penetrates the first organic film 52 along its thickness direction.

[0172] S12, please refer to Figure 28 The first hard mask layer 51 located in the opening region Q01 is removed. Optionally, the method for removing the first hard mask layer 51 can be, for example, wet etching. Figure 28 The diagram shows a structure in which part of the first hard mask layer 51 is removed.

[0173] S13, please refer to Figure 29 In the opening region Q01, a recess 223 is formed on the protrusion by etching. Optionally, the etching here can be, for example, dry etching. Figure 29 The diagram shows a structure in which a recess 223 is formed on a protrusion;

[0174] S14, please refer to Figure 30 The first organic film 52 and the first hard mask layer 51 are removed sequentially, wherein, Figure 30 The image shown is in Figure 29 A schematic diagram of a structure based on the shown structure, with the first organic film 52 and the first hard mask layer 51 removed.

[0175] Specifically, this embodiment further illustrates a method for forming a recess 223 on the protrusion of the barrier portion 22. Before forming the recess 223, a first hard mask layer 51 and a first organic film 52 are formed on the side of the opening, the pixel definition structure 21, and the barrier portion 22 facing away from the substrate 00. After removing the first hard mask layer 51 located at the opening region Q01, the protrusion or boss 213 in the opening region Q01 can be dry-etched under the blocking effect of the first hard mask layer 51 in the non-opening region Q00, forming the recess 223 on the protrusion or boss 213. The depth of the recess 223 formed by the dry etching method is relatively large, specifically greater than the depth of the groove in the barrier portion 22, that is, making the step difference between the top and bottom of the recess 223 relatively large. When the organic common layer is formed in the subsequent process, the amount of organic common layer that can be accommodated in the recess 223 will be larger, which is beneficial to extend the laying path of the organic common layer and the transmission path of electrical signals. The large step design of the recess 223 increases the possibility of the organic common layer being broken at the top of the recess 223, which is beneficial to block the leakage current transmission path and effectively avoid the problem of sub-pixel stealing light.

[0176] Figure 31 The diagram shown is another flowchart of a method for manufacturing a display panel according to an embodiment of the present invention. Based on the same inventive concept, the present invention also provides a method for manufacturing a display panel, comprising:

[0177] S21, please refer to Figure 18 A substrate 00 is provided, and an array layer 10 is formed on the substrate 00.

[0178] S22, please refer to Figure 19 An anode 32 is formed on the side of the array layer 10 away from the substrate 00, and the anode 32 is electrically connected to the array layer 10.

[0179] S23, please refer to Figure 20 A pixel definition layer 20 is formed on the side of the anode 32 that is away from the substrate 00.

[0180] S24, please refer to Figure 32 and Figure 33 A first mask 41 is disposed on the side of the pixel definition layer 20 facing away from the substrate 00. The first mask 41 includes a fully transparent area A2 and an opaque area A0, or the first mask 41 includes a fully transparent area A2, an opaque area A0, and a semi-transparent area A1; wherein, Figure 32 The diagram shows a scheme where the first mask 41 includes only the fully transparent area A2 and the opaque area A0 when the first mask 41 is introduced. Figure 33 The diagram shows a scheme in which the first mask 41 includes a fully transparent area A2, an opaque area A0, and a semi-transparent area A1 when the first mask 41 is introduced.

[0181] S25, please refer to Figure 34 and Figure 35 An opening is formed in the fully transparent region A2 through exposure, exposing the anode 32; wherein, Figure 34 To utilize Figure 32 A schematic diagram of the structure formed by exposing the corresponding first mask 41 structure. Figure 35 The following is a description of the use of Figure 33 The schematic diagram of the structure formed by exposing the corresponding first mask 41 is shown below. Figure 34 The structure shown has a groove structure formed at the position corresponding to the semi-transparent area A1 of the first mask 41.

[0182] S26, please refer to Figures 36 to 39 A first hard mask layer 51 is formed on the side of the opening and pixel definition layer 20 facing away from the substrate 00. A second organic film 53 is formed on the side of the first hard mask layer 51 facing away from the substrate 00. The second organic film 53 is processed to form an opening region Q21 and a non-opening region Q22. Along a direction perpendicular to the substrate 00, the opening region Q21 overlaps only with the pixel definition layer 20. Figure 36 The image shown is in Figure 34 The diagram shows a structure in which a first hard mask layer 51 is formed. Figure 37 The image shown is in Figure 36 The diagram shows a structure in which a second organic membrane 53 is formed. Figure 38 The image shown is in Figure 35 The diagram shows a structure in which a first hard mask layer 51 is formed. Figure 39 The image shown is in Figure 38 The diagram shows a structural schematic of a second organic film 53 formed on the structure shown. Optionally, in this embodiment, the first hard mask layer 51 may be, for example, an IZO layer, and the second organic film 53 may be, for example, a photoresist. The method for forming the opening region Q21 and the non-opening region Q22 on the second organic film 53 can be as follows: a mask is introduced onto the side of the second organic film 53 opposite to the first hard mask layer 51. The mask has fully transparent and opaque regions. Through exposure processing, the opening region Q21 will be formed on the second organic film 53 at the position corresponding to the fully transparent region of the mask, and the non-opening region Q22 will be formed at the position corresponding to the opaque region of the mask. The opening region Q21 penetrates the second organic film 53 along its thickness direction.

[0183] S27, Continue to refer to Figure 40 and Figure 41 Remove the first hard mask layer 51 located in the opening region Q21, wherein, Figure 40 The image shown is in Figure 38 A schematic diagram of a structure based on the shown structure, with the first hard mask layer 51 of the opening region Q21 removed. Figure 41 The image shown is in Figure 39 The diagram shows a structure in which the first hard mask layer 51 of the opening region Q21 is removed. Optionally, the method for removing the first hard mask layer 51 is wet etching.

[0184] S28, Continue to refer to Figure 42 and Figure 43 and combined Figure 4 A barrier portion 22 and a pixel definition structure 21 are formed on the pixel definition layer 20 by etching. The barrier portion 22 is disposed on the side of the pixel definition structure 21 away from the substrate 00. The barrier portion 22 includes at least one protrusion, which includes a first bottom surface near the substrate 00, a first sidewall, and a second sidewall. The angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β, wherein one of α and β is greater than the other. Figure 42 The image shown is in Figure 40 A schematic diagram of a structure in which a barrier portion 22 and a pixel definition structure 21 are formed based on the structure shown. Figure 43 The image shown is in Figure 41 A schematic diagram of a structure in which a barrier portion 22 and a pixel definition structure 21 are formed based on the structure shown.

[0185] S29, Continue to refer to Figure 44 and Figure 45 The second organic film 53 and the first hard mask layer 51 are removed sequentially, wherein, Figure 44 The image shows the removal process. Figure 42 A schematic diagram of a structure behind the second organic film 53 and the first hard mask layer 51 in the structure shown. Figure 45 The image shows the removal process. Figure 43 A schematic diagram of a structure behind the second organic film 53 and the first hard mask layer 51 in the structure shown.

[0186] S30, please refer to Figure 46 and Figure 47 An organic common layer 31 is formed at least in the opening of the pixel region, wherein, Figure 46 The image shown is in Figure 44 This is a schematic diagram of a structure in which an organic common layer is formed based on the structure shown. Figure 47 The image shown is in Figure 45 The diagram illustrates a structure in which an organic common layer is formed based on the structure shown. It should be noted that... Figure 46 and Figure 47 The cathode 33 shown is formed after the organic common layer 31 is formed. Optionally, after the anode is formed, a step of forming an encapsulation layer on the anode is also included.

[0187] Specifically, in the fabrication method provided in this embodiment of the invention, after forming the pixel definition layer 20 and the opening corresponding to the pixel, a first hard mask layer 51 and a second organic film 53 are sequentially formed on the pixel definition layer 20. Then, the first hard mask layer 51 located in the fully transparent region A2 is removed. Under the blocking effect of the first hard mask layer 51, the pixel definition layer 20 is etched from the fully transparent region A2. For example, the etching method is dry etching. This method is beneficial to increase the depth of the groove formed on the pixel definition layer 20 by etching, resulting in a larger step difference between the top and bottom of the groove. When the organic common layer is subsequently formed, the amount of organic common layer that can be accommodated in the groove will be larger, which is beneficial to extend the layout path of the organic common layer and the transmission path of electrical signals. The large step difference design of the groove increases the possibility of the organic common layer breaking at the top of the groove, thus helping to block the leakage current transmission path and effectively avoid the problem of sub-pixel stealing light.

[0188] Simultaneously, the above method can also form asymmetrical protrusions in the pixel definition layer 20. Along the arrangement direction of two adjacent pixel regions, the protrusion located between the two pixel regions includes a first sidewall and a second sidewall. The angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β, where α and β are different. When forming an organic common layer in pixel regions and non-pixel regions, the asymmetrical protrusions in the barrier portion 22 extend the laying path of the organic common layer, reducing the amount of organic common layer on the side of the protrusion away from the substrate 00. In fact, the organic common layer can even be cut off on the side of the protrusion away from the substrate 00. The driving current of a certain pixel region will not be able to leak to the adjacent pixel region, or only a small amount of current insufficient to drive the light-emitting device layer 30 to emit light may be transmitted to the adjacent pixel region. Thus, the leakage phenomenon of the display panel is effectively improved, which is beneficial to improving the overall display effect of the display panel.

[0189] Figure 48 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention. Based on the same inventive concept, the present invention also provides a display device 200, which includes the display panel 100 provided in the above embodiment of the present invention.

[0190] It is understood that the display device provided in the embodiments of the present invention can be other display devices with display functions, such as mobile phones, tablets, computers, televisions, and vehicle-mounted display devices, and the present invention does not impose specific limitations on them. The display device provided in the embodiments of the present invention has the beneficial effects of the display panel provided in the embodiments of the present invention. For details, please refer to the description of the display panel in the above embodiments, which will not be repeated here.

[0191] In summary, the display panel, its manufacturing method, and the display device provided by this invention achieve at least the following beneficial effects:

[0192] In the display panel and display device provided in the embodiments of the present invention, or in the display panel formed by the manufacturing method of the present invention, the pixel definition layer includes a pixel definition structure located in a non-pixel region and an opening located in a pixel region. A light-emitting device layer is disposed in the opening. Under the drive of current, the light-emitting device layer in the opening emits light to realize the display function. The light-emitting device layer includes an organic common layer. When forming the organic common layer, part of the organic common layer is located in the pixel region, and part of the organic common layer is located in the non-pixel region. In the present invention, a barrier portion is provided on the side of the pixel definition structure away from the substrate. This barrier portion includes at least one protrusion, and the protrusion has an asymmetrical structure. The angle between its first sidewall and the first bottom surface is α, and the angle between its second sidewall and the first bottom surface is β, where α and β are different. When forming an organic common layer in pixel and non-pixel regions, the asymmetrical protrusions in the barrier portion extend the laying path of the organic common layer, reducing the amount of organic common layer on the side of the protrusion away from the substrate. In some cases, the organic common layer can even be cut off on the side of the protrusion away from the substrate. The driving current of a certain pixel region will not be able to leak to the adjacent pixel region, or only a small amount of current that is insufficient to drive the light-emitting device layer to emit light may be transmitted to the adjacent pixel region. In this way, the leakage phenomenon of the display panel is effectively improved, which is conducive to improving the overall display effect of the display panel.

[0193] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, It includes multiple pixel regions and at least a non-pixel region located between two adjacent pixel regions; The display panel also includes: Substrate; A pixel definition layer located on one side of the substrate includes a pixel definition structure located in the non-pixel region and an opening located in the pixel region; A barrier portion is disposed on the side of the pixel definition structure away from the substrate; A light-emitting device layer, the light-emitting device layer including an organic common layer, the organic common layer being located on the side of the barrier portion away from the substrate; The barrier portion includes at least one protrusion, the protrusion comprising a first bottom surface near the substrate, a first sidewall, and a second sidewall opposite to each other, wherein the angle between the first sidewall and the first bottom surface is α, and the angle between the second sidewall and the first bottom surface is β. 0°＜α≤60°，60°＜β＜90°。 2. The display panel according to claim 1, characterized in that, 0°＜α≤50°，60°＜β≤80°。 3. The display panel according to claim 1, characterized in that, The opening includes a first opening and a second opening, and the light-emitting device layer includes a first color light-emitting device and a second color light-emitting device. The first opening corresponds to the first color light-emitting device, and the second opening corresponds to the second color light-emitting device. The wavelength of the light emitted by the first color light-emitting device is greater than the wavelength of the light emitted by the second color light-emitting device. Along the direction from the first opening to the second opening, the minimum distance between the blocking part and the first opening is D1, and the minimum distance between the blocking part and the second opening is D2, where D1 < D2.

4. The display panel according to claim 3, characterized in that, The second color light-emitting device is a blue light-emitting device.

5. The display panel according to claim 1, characterized in that, Along a direction perpendicular to the substrate, the total thickness of the protrusion and the pixel definition structure is H1, where 1μm≤H1≤2μm.

6. The display panel according to claim 1, characterized in that, The opening includes a first opening and a second opening, the first opening and the second opening are located on both sides of the protrusion and are adjacent to the protrusion, and the first opening and the second opening are arranged along a first direction; the protrusion includes a first protrusion and a second protrusion. Along the first direction, the first protrusion is located between the first opening and the second protrusion, and the first sidewall of the first protrusion is adjacent to the first opening; The second protrusion is located between the second opening and the first protrusion, and the first sidewall of the second protrusion is adjacent to the second opening.

7. The display panel according to claim 6, characterized in that, The shape of the orthographic projection of the first protrusion on the substrate is the same as the shape of the orthographic projection of the second protrusion on the substrate.

8. The display panel according to claim 6, characterized in that, A first groove is formed between the second sidewall of the first protrusion and the second sidewall of the second protrusion. The protrusion includes a first top surface facing away from the substrate. The angle between the first top surface and the second sidewall is θ, where 85°≤θ<180° and β<90°.

9. The display panel according to claim 6, characterized in that, The blocking portion further includes at least one boss, which is located between the first protrusion and the second protrusion, and a second groove is formed between the boss and the first protrusion and between the boss and the second protrusion.

10. The display panel according to claim 9, characterized in that, In the direction perpendicular to the substrate, at least one of the second grooves has a depth of H2, 0.7 μm ≤ H2 ≤ 1.3 μm.

11. The display panel according to claim 9, characterized in that, The first protrusion, the second protrusion, and the boss are located on the same plane away from the surface of the pixel definition structure.

12. The display panel according to claim 9, characterized in that, At least one of the first protrusion, the second protrusion, and the boss has a raised arc surface on the surface that faces away from the pixel definition structure.

13. The display panel according to claim 9, characterized in that, At least one of the first protrusion, the second protrusion, and the boss includes a recessed portion, the recessed portion being recessed from the surface of the protrusion or the boss away from the pixel definition structure toward the pixel definition structure, and the depth of the recessed portion being greater than the depth of the second groove.

14. The display panel according to claim 13, characterized in that, The height of the first protrusion and the second protrusion is greater than or equal to the height of the boss, and the first protrusion and the second protrusion are both provided with the recess.

15. The display panel according to claim 13, characterized in that, The light-emitting device layer further includes an anode, which is located on the side of the pixel definition structure facing the substrate. In the direction perpendicular to the substrate, the distance between the surface of the anode away from the substrate and the bottom surface of the recess is D0, where 0.7μm≤D0≤1μm.

16. The display panel according to claim 1, characterized in that, The barrier portion and the pixel definition structure are made of the same material.

17. A display panel, characterized in that, It includes multiple pixel regions and at least a non-pixel region located between two adjacent pixel regions; The display panel also includes: Substrate; A pixel definition layer located on one side of the substrate includes a pixel definition structure located in the non-pixel region and an opening located in the pixel region; A barrier portion is disposed on the side of the pixel definition structure away from the substrate; A light-emitting device layer, the light-emitting device layer including an organic common layer, the organic common layer being located on the side of the barrier portion away from the substrate; The barrier portion includes at least one protrusion, the protrusion including a first bottom surface near the substrate, a first sidewall opposite to the substrate, and a second sidewall; The opening includes a first opening and a second opening, the first opening and the second opening are located on both sides of the protrusion and are adjacent to the protrusion, and the first opening and the second opening are arranged along a first direction; the protrusion includes a first protrusion and a second protrusion. Along the first direction, the first protrusion is located between the first opening and the second protrusion, and the first sidewall of the first protrusion is adjacent to the first opening; the second protrusion is located between the second opening and the first protrusion, and the first sidewall of the second protrusion is adjacent to the second opening. A first groove is formed between the second sidewall of the first protrusion and the second sidewall of the second protrusion. The protrusion includes a first top surface facing away from the substrate. The angle between the first top surface and the second sidewall is θ, where 85°≤θ<180° and β<90°.

18. The display panel according to claim 17, characterized in that, The shape of the orthographic projection of the first protrusion on the substrate is the same as the shape of the orthographic projection of the second protrusion on the substrate.

19. The display panel according to claim 17, characterized in that, The blocking portion further includes at least one boss, which is located between the first protrusion and the second protrusion, and a second groove is formed between the boss and the first protrusion and between the boss and the second protrusion.

20. The display panel according to claim 19, characterized in that, In the direction perpendicular to the substrate, at least one of the second grooves has a depth of H2, 0.7 μm ≤ H2 ≤ 1.3 μm.

21. The display panel according to claim 19, characterized in that, The first protrusion, the second protrusion, and the boss are located on the same plane away from the surface of the pixel definition structure.

22. The display panel according to claim 19, characterized in that, At least one of the first protrusion, the second protrusion, and the boss has a raised arc surface on the surface that faces away from the pixel definition structure.

23. A display device, characterized in that, Includes the display panel described in any one of claims 1 to 22.

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