Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. According to the display panel, a pixel definition layer comprises a first sub-part, a second sub-part and a third sub-part, in the first direction, the third sub-part is at least arranged at at least one junction of a display area and a virtual pixel area, and the thickness of the third sub-part is larger than that of the second sub-part; the third sub-part can prevent the solution in the virtual pixel area from flowing into the display area and prevent the solution in the virtual pixel area from being mixed with the solution in the display area, so that color mixing of the sub-pixels in the display area is prevented, and the yield and the display effect of the display panel are improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices are widely used in various fields due to their light weight, wide viewing angle, low power consumption, fast response speed, low temperature resistance, high luminous efficiency, and the ability to produce curved flexible display screens. Inkjet printing is widely used in the preparation of luminescent materials for OLED display devices due to its advantages such as simple operation, low cost, simple process, and easy realization of large sizes. However, in the process of forming OLED display devices by inkjet printing, it was found that due to the obvious difference in the speed of solvent evaporation between the middle and edge parts of the display area, the film thickness of the display area is uneven, which affects the overall film thickness uniformity of the OLED display device, and thus leads to poor display effect of the OLED display device.

[0003] To address this issue, some OLED displays feature a ring of dummy pixels around the display area. During inkjet printing, a solution is also printed in these dummy pixels. This expands the saturation range, ensuring a consistent solvent atmosphere in the center and edges of the display area. However, in actual manufacturing, it has been found that color mixing is prone to occur at the edges of the display area, resulting in poor display quality.

[0004] Therefore, existing OLED display devices have a technical problem in which color mixing easily occurs at the edge of the display area, resulting in poor display. Summary of the Invention

[0005] Embodiments of the present application provide a display panel and a display device to alleviate the technical problem of conventional OLED display devices in which color mixing easily occurs at the edge of the display area, resulting in poor display.

[0006] To achieve the above objectives, according to a first aspect of the present application, a display panel is provided, comprising: a display area and a virtual pixel area disposed on at least one side of the display area; the display panel further comprising a plurality of pixels arranged in an array, each pixel comprising a plurality of sub-pixels, and adjacent sub-pixels emitting different colors in a first direction; the display panel comprising:

[0007] substrate;

[0008] a pixel definition layer disposed on one side of the substrate, the pixel definition layer comprising a first sub-portion, a second sub-portion, and a third sub-portion, the first sub-portion extending along a first direction and arranged along a second direction, the first sub-portion being disposed between two adjacent rows of sub-pixels, the second sub-portion extending along the second direction and arranged along the first direction, the second sub-portion being disposed between two adjacent columns of sub-pixels, and the third sub-portion extending along the second direction;

[0009] Wherein, in the first direction, the third sub-portion is at least provided at at least one junction between the display area and the virtual pixel area, and the thickness of the third sub-portion is greater than the thickness of the second sub-portion;

[0010] An included angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

[0011] According to a second aspect of the present application, a display device is provided, comprising a display panel as described in any one of the above embodiments.

[0012] An embodiment of the present application provides a display panel and a display device; the display panel comprises a pixel definition layer including a first sub-portion, a second sub-portion and a third sub-portion, wherein in a first direction, the third sub-portion is at least arranged at at least one junction between a display area and a virtual pixel area, and the thickness of the third sub-portion is greater than the thickness of the second sub-portion, so that the third sub-portion can prevent the solution in the virtual pixel area from flowing into the display area, and prevent the solution in the virtual pixel area from mixing with the solution in the display area, thereby preventing the sub-pixels in the display area from mixing colors, thereby improving the yield and display effect of the display panel.

[0013] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0015] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0016] Figure 1 This is a first planar schematic diagram of a display panel provided in an embodiment of the present application.

[0017] Figure 2 for Figure 1Schematic diagram of the A1-A2 cross-section of the display panel.

[0018] Figure 3 for Figure 1 Schematic diagram of the B1-B2 cross-section of the display panel.

[0019] Figure 4 This is a second planar schematic diagram of the display panel provided in an embodiment of the present application.

[0020] Figure 5 for Figure 4 Schematic diagram of the A1-A2 cross-section of the display panel.

[0021] Figure 6 for Figure 4 Schematic diagram of the B1-B2 cross-section of the display panel.

[0022] Figure 7 Schematic diagram of the film layer of the display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0024] The embodiments of the present application address the technical problem in existing OLED display devices that color mixing easily occurs at the edges of the display area, resulting in poor display, and provide a display panel and a display device to alleviate the above technical problem.

[0025] Figure 1 This is a first planar schematic diagram of a display panel provided in an embodiment of the present application. Figure 2 for Figure 1 Schematic diagram of the A1-A2 cross-section of the display panel. Figure 3 for Figure 1 Schematic diagram of the B1-B2 cross-section of the display panel. Figure 4 This is a second planar schematic diagram of the display panel provided in an embodiment of the present application. Figure 5 for Figure 4 Schematic diagram of the A1-A2 cross-section of the display panel. Figure 6 for Figure 4 Schematic diagram of the B1-B2 cross-section of the display panel. Figure 7 Schematic diagram of the film layer of the display panel provided in an embodiment of the present application.

[0026] like Figures 1 to 7As shown, an embodiment of the present application provides a display panel, the display panel 1 includes a display area 101 and a virtual pixel area 102a arranged on at least one side of the display area 101, the display panel 1 also includes a plurality of pixels 13 arranged in an array, each of the pixels 13 includes a plurality of sub-pixels (for example, the display pixel 11 includes a first sub-pixel 11a, a second sub-pixel 11b and a third sub-pixel 11c), and in a first direction X, the luminous colors of adjacent sub-pixels are different (for example, the luminous colors of the first sub-pixel 11a and the second sub-pixel 11b are different); the display panel 1 includes The pixel definition layer 24 is provided on one side of the substrate 21. The pixel definition layer 24 includes a first sub-portion 241, a second sub-portion 242, and a third sub-portion 243. The first sub-portion 241 extends along a first direction X and is arranged along a second direction Y. The first sub-portion 241 is provided between two adjacent rows of sub-pixels. The second sub-portion 242 extends along the second direction Y and is arranged along the first direction X. The second sub-portion 242 is provided between two adjacent columns of sub-pixels. The third sub-portion 243 extends along the second direction Y.

[0027] In the first direction X, the third sub-portion 243 is at least disposed at at least one boundary between the display area 101 and the virtual pixel area 102a, and a thickness L3 of the third sub-portion 243 is greater than a thickness L2 of the second sub-portion 242;

[0028] An included angle between the first direction X and the second direction Y is greater than 0 and less than or equal to 90 degrees.

[0029] An embodiment of the present application provides a display panel; the display panel 1 includes a pixel definition layer 24 including a first sub-portion 241, a second sub-portion 242 and a third sub-portion 243. In a first direction, the third sub-portion 243 is at least arranged at at least one junction between the display area 101 and the virtual pixel area 102a. The thickness of the third sub-portion 243 is greater than the thickness of the second sub-portion 242, so that the third sub-portion 243 can prevent the solution in the virtual pixel area 102a from flowing into the display area 101, and prevent the solution in the virtual pixel area 102a from mixing with the solution in the display area 101, thereby preventing the sub-pixels in the display area from mixing colors, thereby improving the yield and display effect of the display panel.

[0030] Specifically, such as Figure 2 、 Figure 5 As shown, it can be seen that the thickness L3 of the third sub-portion 243 is greater than the thickness L2 of the second sub-portion 242 .

[0031] Specifically, the display panel 1 includes a non-display area 102 disposed on at least one side of the display area 101 , and the non-display area 102 includes a dummy pixel area 102 a .

[0032] Specifically, the non-display area 102 may include a virtual pixel area 102a and other areas. The other areas may be gate drive circuit areas, binding areas and other areas, but the embodiments of the present application are not limited to this. The virtual pixel area 102a may have a complete film layer structure, that is, the film layer structure of the virtual pixel area 102a, except for preventing it from lighting up, other designs may be the same as the display area. For example, the pixel electrode in the virtual pixel area 102a may not be connected to the source / drain, so that it cannot input signals to work, or the virtual pixel area 102a may have a complete structure but does not input signals so that it cannot display; the virtual pixel area 102a may also be set with the gate drive circuit and the wiring required in the binding area, that is, the virtual pixel area 102a is also other areas in the non-display area.

[0033] Specifically, the non-display area may be provided on one side, two sides, three sides or four sides of the display area, and the non-display area may be bent to the back side of the display area.

[0034] Specifically, it is understood that various sub-pixels may be provided in the virtual pixel area 102a. For example, if red sub-pixels, green sub-pixels, and blue sub-pixels are provided in the display area 101, the virtual pixel area 102a may also be provided with red sub-pixels, green sub-pixels, and blue sub-pixels. The pixel arrangement in the virtual pixel area 102a may be the same as or different from the pixel arrangement in the display area 101. However, during display, the virtual pixel area 102a may not be displayed.

[0035] Specifically, the embodiment of the present application is described by taking the second sub-section 242 being separated by the first sub-section 241 as an example, but the embodiment of the present application is not limited to this. The second sub-section 242 can be continuous and cross the first sub-section 241. The first sub-section 241 and the second sub-section 242 can adopt a Line Bank design.

[0036] Specifically, when inkjet printing is used to form the luminescent material layer, in order to ensure the spreadability and fluidity of the ink when printing sub-pixels of the same luminescent color and to prevent the problem of color mixing when printing sub-pixels of different luminescent colors, one of the first sub-section and the second sub-section is made hydrophilic and the other is made hydrophobic. Figure 1 For example, if sub-pixels of the same luminous color are arranged along the second direction Y, the first sub-portion 241 will be hydrophilic and the second sub-portion 242 will be hydrophobic. However, the present invention is not limited thereto. For example, if sub-pixels of the same luminous color are arranged along the first direction X, the second sub-portion 242 will be hydrophilic and the first sub-portion 241 will be hydrophobic. Alternatively, both the first sub-portion 241 and the second sub-portion 242 may be hydrophilic or hydrophobic.

[0037] Specifically, compared to the current display device, the second sub-portion 242 is disposed at the junction of the display area 101 and the virtual pixel area 102a, resulting in the possibility of mutual flow between the ink in the display area 101 and the ink in the virtual pixel area 102a. Color mixing in the virtual pixel area 102a will not affect the display effect, but color mixing in the display area 101 will cause anomalies. The embodiment of the present application provides a third sub-portion 243, so that the third sub-portion 243 is disposed at least at least one junction between the display area 101 and the virtual pixel area 102a. The thickness of the third sub-portion 243 is greater than that of the second sub-portion 242, so that the third sub-portion 243 can prevent the solution in the virtual pixel area 102a from flowing into the display area 101, preventing the solution in the virtual pixel area 102a from mixing with the solution in the display area 101, thereby preventing color mixing in the sub-pixels in the display area, and improving the yield and display effect of the display panel.

[0038] Specifically, it can be understood that in the first direction, when the luminous colors of adjacent sub-pixels are different, the reason why color mixing occurs in the sub-pixels of the display area is that the sub-pixels in the virtual pixel area 102a and the sub-pixels in the display area 101 emit different luminous colors. When the sub-pixels in the virtual pixel area 102a are formed, the solution in the virtual pixel area 102a will flow into the display area 101, causing the inks corresponding to the sub-pixels of different luminous colors to mix together, resulting in color mixing. Therefore, in this embodiment of the present application, a third sub-portion 243 can be provided to block the solution in the virtual pixel area 102a and the solution in the display area 101 to prevent the two from mixing and avoid color mixing.

[0039] Specifically, in the second direction, the luminous colors of adjacent sub-pixels may be the same.

[0040] Specifically, it is understandable that Figure 1 、 Figure 4 As shown, the pixel 13 may include a display pixel 11 located in the display area 101 and a virtual pixel 12 located in the virtual pixel area 102a. The display pixel 11 may include a first sub-pixel 11a, a second sub-pixel 11b and a third sub-pixel 11c. The virtual pixel 12 may also include a first sub-pixel 11a, a second sub-pixel 11b and a third sub-pixel 11c, and the arrangement of the virtual pixel 12 may be the same as that of the display pixel 11.

[0041] Specifically, it can be understood that the sub-pixels refer to the first sub-pixel 11 a , the second sub-pixel 11 b and the third sub-pixel 11 c .

[0042] Specifically, such as Figure 1 、 Figure 4As shown, since the virtual pixel does not emit light, the sub-pixels in the virtual pixel are not distinguished, but it can be understood that when the arrangement of the virtual pixel is the same as the arrangement of the display pixel, the virtual pixel also includes the first sub-pixel 11a, the second sub-pixel 11b and the third sub-pixel 11c formed by different inks.

[0043] Specifically, in the embodiment of the present application, ink refers to a solution that forms a luminescent material layer. Different solutions can form different luminescent material layers, thereby forming sub-pixels with different luminescent colors.

[0044] In some embodiments, as Figures 1 to 7 As shown, the pixel definition layer 24 further includes a fourth sub-portion 244, which extends along the first direction X. The fourth sub-portion 244 is disposed at least at one boundary between the display area 101 and the dummy pixel area 102a. The thickness L4 of the fourth sub-portion 244 is greater than the thickness L1 of the first sub-portion 241. By providing the fourth sub-portion 244 at at least one boundary between the display area 101 and the dummy pixel area 102a, and the thickness L4 of the fourth sub-portion 244 is greater than the thickness L1 of the first sub-portion 241, the third sub-portion 243 and the fourth sub-portion 244 can be disposed around the display area 101, thereby controlling the atmosphere in the display area 101, improving film formation uniformity, and increasing the yield of the display panel.

[0045] Specifically, such as Figure 3 、 Figure 6 As shown, it can be seen that the thickness L4 of the fourth sub-portion 244 is greater than the thickness L1 of the first sub-portion 241 .

[0046] Specifically, for a display panel in which adjacent sub-pixels in the second direction have different luminous colors, the fourth sub-section 244 can be set to prevent color mixing between the sub-pixels in the display area and the sub-pixels in the virtual pixel area. For a display panel in which adjacent sub-pixels in the second direction have the same luminous color, the fourth sub-section 244 can be set to allow the third sub-section 243 and the fourth sub-section 244 to be arranged around the display area 101, thereby controlling the atmosphere of the display area 101, improving the film formation uniformity of the luminescent material layer of the display panel, and improving the yield of the display panel.

[0047] In some embodiments, as Figures 1 to 3As shown, the virtual pixel area 102a is arranged around the display area 101, and in the first direction X, the third sub-portion 243 is at least arranged at each intersection of the virtual pixel area 102a and the display area 101; in the second direction Y, the fourth sub-portion 244 is at least arranged at each intersection of the virtual pixel area 102a and the display area 101, and the orthographic projection of the third sub-portion 243 overlaps with the orthographic projection of the fourth sub-portion 244. By setting the third sub-section 243 at least at each junction of the virtual pixel area 102a and the display area 101, the third sub-section can prevent the sub-pixels at each junction of the virtual pixel area 102a and the display area 101 from mixing colors, thereby improving the yield of the display panel; the fourth sub-section is set at each junction of the virtual pixel area 102a and the display area 101, so that the third sub-section and the fourth sub-section can prevent the sub-pixels at each junction of the virtual pixel area 102a and the display area 101 from mixing colors, and the third sub-section and the fourth sub-section can be set around the display area 101, thereby controlling the atmosphere of the display area 101, improving the film formation uniformity when the display panel is formed, and improving the yield of the display panel.

[0048] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 As shown, it can be seen that the virtual pixel area 102a is arranged around the display area 101, and the display area 101 and the virtual pixel area 102a have boundaries in four directions. The third sub-section 243 can be set at the intersection of the left and right sides of the display area 101 and the virtual pixel area 102a, and the fourth sub-section 244 can be set at the intersection of the upper and lower sides of the display area 101 and the virtual pixel area 102a, and the orthographic projection of the third sub-section 243 overlaps with the orthographic projection of the fourth sub-section 244. The third sub-section 243 and the fourth sub-section 244 enclose the display area 101, so that the atmosphere of the display area 101 can be controlled, and the film formation uniformity can be improved when the display panel is formed, thereby improving the yield of the display panel.

[0049] Specifically, the third sub-section 243 is set corresponding to at least two rows of the pixels 13, and the fourth sub-section 244 is set corresponding to at least two columns of the pixels 13; specifically, the third sub-section 243 can be set corresponding to all rows of the pixels 13 in the display area, and the fourth sub-section 244 can be set corresponding to all columns of the pixels 13 in the display area.

[0050] Specifically, the above embodiment is described by taking the overlap of the orthographic projection of the third sub-section 243 and the orthographic projection of the fourth sub-section 244 as an example, but the embodiments of the present application are not limited to this. The end of the orthographic projection of the fourth sub-section 244 can be made to contact with the third sub-section 243, and the end of the orthographic projection of the third sub-section 243 can also be made to contact with the end of the fourth sub-section.

[0051] In some embodiments, as Figures 4 to 6 As shown, the third sub-section 243 is further disposed in the display area 101, and the fourth sub-section 244 is further disposed in the display area 101. By disposing the third sub-section 243 in the display area 101, the third sub-section 243 prevents color mixing between sub-pixels in the display area 101, and by disposing the fourth sub-section 244, color mixing between sub-pixels in the display area 101 is prevented. In addition, the third sub-section 243 and the fourth sub-section 244 can balance the steam atmosphere of the display panel, improve the concentration of the steam, adjust the local atmosphere parameters, improve the film formation uniformity of the display panel, and improve the yield of the display panel.

[0052] In some embodiments, as Figure 4 As shown, the display area 101 is provided with a plurality of third sub-sections 243 and a plurality of fourth sub-sections 244. The plurality of third sub-sections 243 and the plurality of fourth sub-sections 244 divide the display area 101 into a plurality of display sub-sections 101a. The number of pixels 13 in each display sub-section 101a is equal. By providing the plurality of third sub-sections 243 and the plurality of fourth sub-sections 244 in the display area 101, the plurality of third sub-sections 243 and the plurality of fourth sub-sections 244 can divide the display area 101 into a plurality of display sub-sections 101a, thereby preventing color mixing between the sub-pixels and ensuring that the number of pixels 13 in each display sub-section 101a is equal. This ensures that the atmosphere in each display sub-section 101a is similar or even identical, thereby improving film formation uniformity.

[0053] Specifically, in Figure 4 In the figure, the third sub-portion 243 is separated by the fourth sub-portion 244 for illustration, but in actual design, the fourth sub-portions 244 located in the same column can be continuous, and the orthographic projection of the fourth sub-portion 244 overlaps with the orthographic projection of each third sub-portion 243.

[0054] Specifically, Figure 4 In the description, an example is given in which one column of pixels is provided in each display sub-area 101 a divided by the third sub-portion 243 and the fourth sub-portion 244 . However, the embodiment of the present application is not limited thereto. Multiple columns of pixels may be provided in each display sub-area 101 a.

[0055] In some embodiments, as Figure 4As shown, a plurality of third sub-sections 243 and a plurality of fourth sub-sections 244 are provided in the display area 101. Each third sub-section 243 is provided corresponding to at least two rows of pixels 13, and each fourth sub-section 244 is provided corresponding to at least two columns of pixels 13. By providing the third sub-sections 243 corresponding to at least two rows of pixels 13 and the fourth sub-sections 244 corresponding to at least two columns of pixels 13, the arrangement density of the third sub-sections 243 and the fourth sub-sections 244 can be avoided from being too high, thereby adjusting the local atmosphere and improving film formation uniformity.

[0056] In some embodiments, the material of the third sub-section 243 is the same as that of the second sub-section 242, and the material of the fourth sub-section 244 is the same as that of the first sub-section 241. By making the material of the third sub-section 243 the same as that of the second sub-section 242, the third and second sub-sections can be formed in a single process without adding any additional process steps. By making the material of the fourth sub-section 244 the same as that of the first sub-section 241, the fourth and first sub-sections can be formed in a single process without adding any additional process steps, thereby improving the manufacturing efficiency of the display panel.

[0057] In some embodiments, the contact angle of the third sub-portion 243 is greater than the contact angle of the fourth sub-portion 244. By making the contact angle of the third sub-portion 243 greater than the contact angle of the fourth sub-portion 244, the hydrophobicity of the third sub-portion is greater than that of the fourth sub-portion, thereby preventing color mixing.

[0058] Specifically, the material of the first sub-part may be a hydrophilic material, and the material of the second sub-part may be a hydrophobic material.

[0059] Specifically, the material of the fourth sub-section may be a hydrophilic material, and the material of the third sub-section may be a hydrophobic material.

[0060] Specifically, the fourth sub-section and the first sub-section may be made of hydrophilic materials, and the second sub-section and the third sub-section may be made of hydrophobic materials.

[0061] In some embodiments, the thickness L3 of the third sub-portion 243 is equal to the thickness L4 of the fourth sub-portion 244. By making the thickness of the third sub-portion 243 equal to the thickness of the fourth sub-portion 244, the atmosphere at each junction between the display area 101 and the dummy pixel area 102a is similar or even the same, thereby improving film formation uniformity.

[0062] Specifically, the thickness of the third sub-portion 243 is greater than that of the first sub-portion, and the thickness of the third sub-portion is greater than that of the second sub-portion, thereby preventing color mixing of sub-pixels in the display area and improving the yield of the display panel.

[0063] Specifically, the thickness of the fourth sub-portion 244 is greater than that of the first sub-portion, and the thickness of the fourth sub-portion is greater than that of the second sub-portion, thereby preventing color mixing of sub-pixels in the display area and improving the yield of the display panel.

[0064] Specifically, such as Figure 7 As shown, the display panel 1 includes a substrate 21 , a driving circuit layer 22 , a pixel electrode layer 23 , a pixel definition layer 24 , a light-emitting material layer 25 , a common electrode layer 26 , an encapsulation layer 27 , an adhesive layer 28 and a cover plate 29 .

[0065] Specifically, the driving circuit layer 22 may include a buffer layer, an active layer, a gate insulating layer, a gate layer, an interlayer insulating layer, a source / drain electrode layer, and a planarization layer. However, the present invention is not limited thereto, and the driving circuit layer 22 may have other structures, such as two gate layers, two active layers made of different materials, or two or more source / drain electrode layers.

[0066] Specifically, the light emitting material layer 25 can be formed by inkjet printing.

[0067] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments.

[0068] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0069] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0070] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0071] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a virtual pixel area arranged on at least one side of the display area, the display panel also includes a plurality of pixels arranged in an array, each of the pixels includes a plurality of sub-pixels, and adjacent sub-pixels in a first direction emit different luminous colors; the display panel includes: substrate; a pixel definition layer disposed on one side of the substrate, the pixel definition layer comprising a first sub-portion, a second sub-portion, and a third sub-portion, the first sub-portion extending along a first direction and arranged along a second direction, the first sub-portion being disposed between two adjacent rows of sub-pixels, the second sub-portion extending along the second direction and arranged along the first direction, the second sub-portion being disposed between two adjacent columns of sub-pixels, and the third sub-portion extending along the second direction; Wherein, in the first direction, the third sub-portion is at least provided at at least one junction between the display area and the virtual pixel area, and the thickness of the third sub-portion is greater than the thickness of the second sub-portion; An included angle between the first direction and the second direction is greater than 0 and less than or equal to 90 degrees.

2. The display panel according to claim 1, wherein: The pixel definition layer also includes a fourth sub-portion, which extends along the first direction. The fourth sub-portion is at least arranged at at least one junction between the display area and the virtual pixel area. The thickness of the fourth sub-portion is greater than that of the first sub-portion.

3. The display panel according to claim 2, wherein: The virtual pixel area is arranged around the display area. In the first direction, the third sub-portion is at least arranged at each intersection of the virtual pixel area and the display area; in the second direction, the fourth sub-portion is at least arranged at each intersection of the virtual pixel area and the display area, and the orthographic projection of the third sub-portion overlaps with the orthographic projection of the fourth sub-portion.

4. The display panel according to claim 2, wherein: At least one of the third subsection and the fourth subsection is further disposed in the display area.

5. The display panel according to claim 4, wherein: A plurality of the third sub-sections are provided in the display area, and a plurality of the fourth sub-sections are provided in the display area. The plurality of the third sub-sections and the plurality of the fourth sub-sections divide the display area into a plurality of display sub-areas, and the number of the pixels in each display sub-area is equal.

6. The display panel according to claim 4, wherein: A plurality of the third sub-sections are provided in the display area, and a plurality of the fourth sub-sections are provided in the display area. Each of the third sub-sections is corresponding to at least two rows of pixels, and each of the fourth sub-sections is corresponding to at least two columns of pixels.

7. The display panel according to any one of claims 2 to 6, characterized in that: The material of the third sub-section is the same as that of the second sub-section, and the material of the fourth sub-section is the same as that of the first sub-section.

8. The display panel according to claim 7, wherein: The contact angle of the third sub-portion is greater than the contact angle of the fourth sub-portion.

9. The display panel according to any one of claims 2 to 6, characterized in that: The thickness of the third sub-portion is equal to the thickness of the fourth sub-portion.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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