Display panel, display device, and method for manufacturing a display panel

Abstract

To provide a display panel of which a display performance is improved, a display device thereof, and a display panel manufacturing method thereof.SOLUTION: A display panel 10 comprises: a substrate 100; a first power supply signal line 200; a conductor 310 that contains a plurality of conductive parts 310, to which the conductor 310 and the first power supply signal line 200 are alternately connected; a pixel definition layer 400 which contains a first opening 420 that is provided to a pixel limited part 410 and a pixel limited part 410, and a second opening 430, and into which a positive projection of at least one part of the second opening 430 and the conductor 310 in the substrate 100 is overlapped; a light emitting layer 500 that is provided to the side where a conductive layer 300 of the substrate 100 is positioned, and contains a plurality of light emitting parts 510, and in which each light emitting part 510 of at least one part is positioned in the first opening 420; a weir part 600 that is provided to the substrate 100 and surrounds the conductor 310; and a first electrode 700 that is provided to the side separated from the light emitting layer 500 and the substrate 100 of the weir part 600, and is connected to the conductor 310 via the second opening 430.SELECTED DRAWING: Figure 2

Description

Technical Field

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[0003]

[0001] This application relates to the technical field of display devices, and particularly to a display panel, a display device, and a method for manufacturing a display panel.

Background Art

[0002] An organic light-emitting diode (abbreviated as OLED) display is also called an organic electroluminescence display. Compared with conventional liquid crystal displays, it has a series of advantages such as self-emission, wide viewing angle, ultra-lightweight, extremely thin, high brightness, low power consumption, and high-speed response, and the response speed can reach 1000 times that of liquid crystal displays. Therefore, OLED displays have become very popular flat display products at home and abroad and have broad application prospects. Quantum dot (QD) materials have advantages such as high emission color purity, adjustable emission wavelength, and stable materials, and have significant advantages in the field of high-gamut color display.

[0003] A quantum dot light emitting diode (abbreviated as QLED) is a new type of light emitting device. Quantum dot light emitting diodes (QLEDs) are gradually becoming one of the future mainstream display technologies due to advantages such as self-emission characteristics without the need for an additional light source, narrow emission peaks, adjustable emission colors, and high emission efficiency. <00,00013>

[0004] However, the display performance of current display products needs to be improved.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Embodiments of this application provide a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the display performance of the display panel.

Means for Solving the Problems

[0006] An embodiment of the first aspect of the present application provides a display panel comprising: a substrate; a first power signal line provided on the substrate; a conductive layer provided on the first power signal line and including a plurality of conductive parts, the conductive parts and the first power signal line being connected to each other; a pixel definition layer including a pixel limiting portion and a first aperture and a second aperture opened in the pixel limiting portion, the orthographic projection of the second aperture on the substrate and the orthographic projection of the conductive part on the substrate overlapping in at least a portion; a light-emitting layer provided on the side of the substrate where the conductive layer is located and including a plurality of light-emitting parts, at least a portion of which are located within the first aperture; a weir provided on the substrate and surrounding the conductive parts, the material of which is sparse with the material of the light-emitting parts; and a first electrode provided on the side of the light-emitting layer and the weir away from the substrate and connected to the conductive layer via the second aperture.

[0007] According to an embodiment of the first aspect of the present application, the weir is located on the side away from the substrate of the pixel limiting portion and is provided surrounding the second opening.

[0008] According to any of the embodiments of the first aspect of the present application, the pixel limiting portion includes a first sub-part and a second sub-part spaced apart from each other, the first aperture is provided in the first sub-part, the second aperture is provided in the second sub-part, and the weir is located on the side of the second sub-part away from the substrate.

[0009] According to any of the above embodiments of the first aspect of the present application, the weir portion has a first surface away from the substrate, the first sub-portion has a second surface away from the substrate, and the first surface is located on the side where the second surface is away from the substrate.

[0010] According to any of the embodiments of the first aspect of the present application, the orthographic projection of the weir portion on the substrate is located within the second opening, and the weir portion is in direct contact with the substrate through the second opening.

[0011] According to any of the embodiments of the first aspect of the present application, the pixel limiting portion has an inner wall surface facing the second opening that is spaced apart from the weir portion.

[0012] According to any of the above embodiments of the first aspect of the present application, the display panel includes overlapping connection regions, the multiple overlapping connection regions are distributed at intervals, and the conductive parts are located in the overlapping connection regions.

[0013] According to any of the above embodiments of the first aspect of the present application, the weir is located in the overlapping connection region.

[0014] According to any of the above embodiments of the first aspect of the present application, the plurality of conductive parts are distributed at intervals along the extending direction of the overlapping connection region.

[0015] According to any of the above embodiments of the first aspect of the present application, the orthographic projection of the conductive portion on the substrate is circular.

[0016] According to any of the above embodiments of the first aspect of the present application, the orthographic projection on the substrate of the weir is annular.

[0017] According to any of the above embodiments of the first aspect of the present application, the overlapping connection regions are striped, and the multiple overlapping connection regions are arranged side by side along a first direction and / or a second direction, and the first and second directions intersect.

[0018] According to any of the embodiments of the first aspect of the present application, the extension dimension of the overlapping connection region in the second direction is greater than the extension dimension in the first direction, and the multiple overlapping connection regions are arranged side by side along the first direction.

[0019] According to any of the embodiments of the first aspect of the present application, the width of the overlapping connection region in the first direction is 10 μm to 50 μm, and the length of the overlapping connection region in the first direction is 10 μm or more.

[0020] According to any of the embodiments of the first aspect of the present application, the distance between two adjacent overlapping connection regions is 5 μm or more.

[0021] According to any of the above embodiments of the first aspect of the present application, the display panel further includes a display area, and the plurality of overlapping connection areas are uniformly distributed within the display area.

[0022] According to any of the above embodiments of the first aspect of the present application, the overlapping connection area is square.

[0023] According to any of the above embodiments of the first aspect of the present application, the distance between two adjacent overlapping connection areas is 50 μm or less, or the interval between two adjacent overlapping connection areas is 80 μm or more.

[0024] According to any of the above embodiments of the first aspect of the present application, the dam portion has a bottom surface facing the substrate and a side surface connected to the bottom surface and extending away from the substrate, and the included angle between the side surface and the bottom surface is 10 degrees or more and 70 degrees or less.

[0025] According to any of the above embodiments of the first aspect of the present application, the thickness d1 of the dam portion and the thickness d2 of the light-emitting portion satisfy d1 ≧ 15d2.

[0026] According to any of the above embodiments of the first aspect of the present application, the thickness d1 of the dam portion is 200 nm to 10 μm.

[0027] According to any of the above embodiments of the first aspect of the present application, the width of the dam portion is 2 μm to 10 μm.

[0028] According to any of the above embodiments of the first aspect of the present application, the conductive portion has concave grooves provided on the surface facing the first electrode.

[0029] According to any of the above embodiments of the first aspect of the present application, a plurality of concave grooves are provided at intervals.

[0030] According to any of the above embodiments of the first aspect of the present application, the concave grooves are formed to extend in the first direction, and the plurality of concave grooves are arranged side by side along the second direction.

[0031] According to any of the above embodiments of the first aspect of the present application, the pixel definition layer further includes a second electrode layer located on the side facing the substrate, the second electrode layer includes a second electrode provided corresponding to each first aperture.

[0032] The conductive portion and the second electrode are provided in the same layer, or the substrate is further provided with a planarization layer, the planarization layer is located on the side of the second electrode layer away from the pixel definition layer, the conductive layer is located on the side of the planarization layer away from the second electrode layer, communication holes are provided in the planarization layer, and the first electrodes are connected to each other via the communication holes and the conductive portion.

[0033] According to any of the above embodiments of the first aspect of the present application, the conductive portion is in contact with the first power signal line, or the conductive layer is via-connected to the first power signal line.

[0034] According to any of the above embodiments of the first aspect of the present application, the weir is a low-energy surface that is hydrophobic and / or oleophobic on the surface away from the substrate.

[0035] A second embodiment of the present application further provides a display device including a display panel according to any one embodiment of the first embodiment described above.

[0036] An embodiment of a third aspect of the present invention further provides a method for manufacturing a display panel, comprising the steps of: providing a conductive material layer on a substrate and patterning the conductive material layer to form a first power signal line; subsequently providing a conductive material layer on the substrate with the first power signal line and patterning the conductive material layer to form a conductive layer, the conductive layer including a plurality of conductive parts located on the side of the substrate away from the first power signal line; providing a pixel definition material layer on the substrate and patterning the pixel definition material layer to form a first aperture and a second aperture, with at least a portion of the conductive parts exposed from the second aperture; providing a hydrophobic material layer on the substrate and patterning the hydrophobic material layer to create a weir surrounding the conductive parts; subsequently manufacturing an emissive layer on the substrate, the emissive layer including a plurality of emissive parts, with at least a portion of the emissive parts located at the first aperture; and subsequently manufacturing a first electrode on the substrate, the first electrode being connected to each other via the second aperture and the conductive parts.

[0037] According to an embodiment of the third aspect of the present application, the display panel includes an overlapping connection region, the light-emitting portion includes a communication opening located in the overlapping connection region, the conductive portion is provided in the overlapping connection region, the extending dimension of the overlapping connection region in a first direction is greater than the extending dimension in a second direction, and in the step of continuing to manufacture a light-emitting layer on a substrate, a plurality of parallel nozzles are moved in a first direction to coat the substrate with a light-emitting material, and one or more adjacent nozzles are closed for a predetermined period of time to form a light-emitting portion including a communication opening in the overlapping connection region. [Effects of the Invention]

[0038] In the display panel according to the embodiment of the present application, the display panel includes a substrate, a first power signal line, a conductive layer, a pixel definition layer, a light-emitting layer, a weir, and a first electrode. The light-emitting portion of the light-emitting layer is provided in a first aperture opened in the pixel definition portion, and the pixel definition portion can improve the problem of color crosstalk between different light-emitting portions. A second aperture is further provided in the pixel definition portion, and the orthographic projection of the second aperture on the substrate and the orthographic projection of the conductive portion on the substrate overlap at least partially, thereby exposing the conductive portion from the second aperture, and the first electrode and the conductive portion can be connected to each other via the second aperture. Since the conductive portion of the conductive layer and the first power signal line are connected to each other, the first electrode can be connected to each other by the conductive portion and the first power signal line, improving the problem of excessive voltage drop at the first electrode and improving the display effect of the display panel. Furthermore, the substrate is provided with a weir surrounding the conductive portion. The materials of the weir and the light-emitting part are spaced apart, and during the manufacturing of the light-emitting part, the barrier and hydrophobic properties of the weir prevent the material of the light-emitting part from overflowing into the conductive part, which affects the electrical connection between the first electrode and the conductive part. This improves the connection yield between the first electrode and the conductive part, better resolves the voltage drop problem of the first electrode, and enhances the display effect of the display panel. Therefore, the embodiment of the present application can improve the display performance of the display panel by providing a weir. [Brief explanation of the drawing]

[0039] Other features, purposes, and advantages of the present application will become more apparent by referring to the following drawings and the detailed description of non-limiting embodiments, where the same or similar reference numerals in the drawings represent the same or similar features.

[0040] [Figure 1] This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention. [Figure 2] This is a cross-sectional view at point AA in Figure 1. [Figure 3] This is a cross-sectional view at AA in Figure 1 in another example. [Figure 4]This is a schematic diagram of a partially enlarged structure of a display panel according to an embodiment of the present invention. [Figure 5] This is a cross-sectional view at AA in Figure 1, in yet another example. [Figure 6] This is a schematic diagram of the structure of the conductive part and the weir part of the display panel according to an embodiment of the present application. [Figure 7] This is a schematic diagram of the structure of the conductive part and the weir part of a display panel according to another embodiment of the present application. [Figure 8] This is a schematic diagram of the structure of the conductive part and the weir part of a display panel according to another embodiment of the present application. [Figure 9] This is a schematic diagram of the structure of a display panel according to another embodiment of the present application. [Figure 10] This is a schematic diagram of the enlarged structure of the weir portion of the display panel according to an embodiment of the present application. [Figure 11] This is a cross-sectional view at AA in Figure 1, in yet another example. [Figure 12] This is a partial cross-sectional view of the conductive portion of a display panel according to an embodiment of the present application. [Figure 13] This is a partially enlarged view of the conductive part of the display panel according to an embodiment of the present application. [Figure 14] This is a partial cross-sectional view of the conductive portion of a display panel according to another embodiment of the present application. [Figure 15] This is a cross-sectional view at AA in Figure 1, in yet another example. [Figure 16] This is a schematic diagram of the structure of the light-emitting section of a display panel according to an embodiment of the present invention. [Figure 17] This is a flowchart of the method for manufacturing a display panel according to an embodiment of the present invention. [Figure 18] This is a schematic diagram of the manufacturing process of a display panel according to an embodiment of the present invention. [Figure 19] This is a schematic diagram of the manufacturing process of a display panel according to an embodiment of the present invention. [Figure 20] This is a schematic diagram of the manufacturing process of a display panel according to an embodiment of the present invention. [Figure 21] This is a schematic diagram of the manufacturing process of a display panel according to an embodiment of the present invention. [Figure 22]This is a schematic diagram of the manufacturing process of a display panel according to an embodiment of the present invention. [Modes for carrying out the invention]

[0041] The following describes in detail the features and exemplary embodiments of the present application in various aspects. In the following detailed description, many specific details are proposed in order to provide a complete understanding of the present application. However, as will be apparent to those skilled in the art, the present application can be implemented without requiring some of these specific details. The following description of embodiments is provided solely to illustrate an exemplary understanding of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessary ambiguity in the present application, and the dimensions of substructures may be exaggerated for clarity. Furthermore, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0042] In the description of this application, unless otherwise specified, "plural" means two or more, and the directions or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," and "outside" are merely for the purpose of describing and simplifying the description of this application and do not indicate or imply that the mentioned device or component has a specific direction or must be constructed and operated in a specific direction, and therefore cannot be understood as limitations on this application. Furthermore, terms such as "first," "second," etc., are merely for the purpose of describing the purpose and cannot be understood as indicating or implying relative importance.

[0043] The directional terms used in the following description all refer to the directions shown in the figures and do not limit the specific structure of the embodiments of this application. Unless otherwise specified in this description, the terms "attachment" and "connection" should be understood in a broad sense, for example, they may be fixed connections, removable connections, integral connections, direct connections, or indirect connections. Those skilled in the art will be able to understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] To better understand this application, the display panel, display device, and method for manufacturing the display panel of the embodiment of this application will be described in detail below with reference to Figures 1 to 22.

[0045] Referring to Figures 1 and 2, Figure 1 is a schematic diagram of the structure of the display panel 10 according to an embodiment of the present application, and Figure 2 is a cross-sectional view of AA in Figure 1, as an example.

[0046] As shown in Figures 1 and 2, an embodiment of the first aspect of the present application provides a display panel 10, the display panel 10 including a substrate 100, a first power signal line 200, a conductive layer 300, a pixel definition layer 400, a light-emitting layer 500, a weir 600, and a first electrode 700. The first power signal line 200 is provided on the substrate 100, the conductive layer 300 is provided on the first power signal line 200 and includes a plurality of conductive parts 310, the conductive parts 310 are connected to each other with respect to the first power signal line 200, the pixel definition layer 400 includes a pixel limiting part 410 and a first aperture 420 and a second aperture 430 opened in the pixel limiting part 410, the orthographic projection of the second aperture 430 on the substrate 100 and the orthographic projection of the conductive part 310 on the substrate 100 overlap at least partially, and the light-emitting layer 500 is The light-emitting layer 500 is provided on the side of the substrate 100 where the conductive layer 300 is located, and includes a plurality of light-emitting parts 510, at least some of which are located within the first opening 420, the weir 600 is provided on the substrate 100 and surrounds the conductive part 310, the material of the weir 600 and the material of the light-emitting parts 510 are coarse, and the first electrode 700 is provided on the side away from the substrate 100 where the light-emitting layer 500 and the weir 600 are located, and is connected to the conductive layer 300 via the second opening 430.

[0047] In the display panel 10 according to the embodiment of the present application, the display panel 10 includes a substrate 100, a first power signal line 200, a conductive layer 300, a pixel definition layer 400, a light-emitting layer 500, a weir 600, and a first electrode 700. The light-emitting portion 510 of the light-emitting layer 500 is provided within a first aperture 420 opened in the pixel limiting portion 410, and the pixel limiting portion 410 can improve the problem of color crosstalk between different light-emitting portions 510. The pixel limiting portion 410 is further provided with a second aperture 430, and the orthographic projection of the second aperture 430 on the substrate 100 and the orthographic projection of the conductive portion 310 on the substrate 100 overlap at least partially, allowing the conductive portion 310 to be exposed from the second aperture 430, and the first electrode 700 and the conductive portion 310 may be connected to each other via the second aperture 430. Since the conductive portion 310 of the conductive layer 300 and the first power signal line 200 are connected to each other, the first electrode 700 may also be connected to the first power signal line 200 via the conductive portion 310, thereby improving the problem of excessive voltage drop across the first electrode 700 and enhancing the display effect of the display panel 10. Furthermore, the substrate 100 is provided with a weir 600, which surrounds the conductive portion 310. The material of the weir 600 and the material of the light-emitting portion 510 are spaced apart, and when manufacturing the light-emitting portion 510, the barrier and hydrophobic effect of the weir 600 prevent the material of the light-emitting portion 510 from overflowing onto the conductive portion 310, which affects the electrical connection between the first electrode 700 and the conductive portion 310. This improves the connection yield between the first electrode 700 and the conductive portion 310, better resolves the voltage drop problem of the first electrode 700, and enhances the display effect of the display panel 10. Therefore, the embodiment of the present application can improve the display performance of the display panel 10 by providing the weir portion 600.

[0048] The fact that the materials of the weir 600 and the light-emitting part 510 are sparse means that the materials of the weir 600 and the light-emitting part 510 are difficult to dissolve, the material of the light-emitting part 510 is unlikely to remain in the weir 600, and the materials of the weir 600 and the light-emitting part 510 repel each other. For example, the material of the weir 600 contains a hydrophobic material, the material of the light-emitting part 510 contains water, and the material of the light-emitting part 510 is unlikely to remain in the weir 600.

[0049] Selectively, the weir 600 has a hydrophobic and / or oleophobic low-energy surface, and when manufacturing the light-emitting part 510, the barrier and hydrophobic action of the weir 600 can improve the situation where the material of the light-emitting part 510 overflows into the conductive part 310, affecting the electrical connection between the first electrode 700 and the conductive part 310, thereby improving the connection yield between the first electrode 700 and the conductive part 310.

[0050] The first power signal line 200 may be, for example, a low-level power signal line or a negative voltage power signal line.

[0051] The conductive layer 300 may be provided adjacent to the film layer on which the first power signal line 200 is located, the conductive portion 310 and the first power signal line 200 may be in contact with each other, or another film layer may be provided between the conductive layer 300 and the first power signal line 200, and the conductive portion 310 and the first power signal line 200 may be via-connected.

[0052] There are multiple installation methods for the light-emitting unit 510. For example, the material of the light-emitting unit 510 may include ink, and the light-emitting unit 510 may be manufactured on the pixel definition layer 400 by processes such as inkjet printing or coating. The light-emitting unit 510 may be a quantum dot light-emitting diode, and in other embodiments, the light-emitting unit 510 may be an organic light-emitting diode or the like.

[0053] There are multiple installation methods for the weir section 600. For example, the material of the weir section 600 includes, but is not limited to, hydrophobic materials such as polyimide, epoxy resin, acrylic resin, silicone resin, silicon nitride, and silicon oxide. Alternatively, the material of the weir section 600 includes a strongly hydrophobic and / or oleophobic material. For example, the material of the weir section 600 includes base materials such as perfluoromethyl groups, perfluoroethyl groups, and perfluorobenzene. The weir section 600 has good hydrophobic properties, improving the problem of the material of the light-emitting section 510 overflowing into the conductive section 310. The hydrophobic material has hydrophobic properties, and here hydrophobic properties refer to "hydrophobic and oleophobic" properties, meaning that liquids do not easily adhere to the weir section 600. Hydrophobic properties do not simply mean that it does not easily come into contact with water, but that it does not easily come into contact with liquids. The material of the weir section 600 includes a hydrophobic material such that the surface of the weir section 600 away from the substrate 100 becomes a low-energy surface.

[0054] There are multiple possible installation locations for the weir 600. For example, in several selectable embodiments, the weir 600 is located on the side of the pixel limiting section 410 away from the substrate 100 and is installed surrounding the second opening 430.

[0055] In these selectable embodiments, the weir 600 is directly provided on the pixel limiting portion 410 such that the height of the weir 600 relative to the substrate 100 is greater than the height of the pixel limiting portion 410 relative to the substrate 100, and the weir 600 protrudes from the pixel limiting portion 410. Furthermore, the weir 600 is provided surrounding the second opening 430, and if the light-emitting material overflows to the outer periphery of the weir 600, the weir 600 can dam the light-emitting material away from the second opening 430, thereby better improving the problem of electrical connection between the first electrode 700 and the first power signal line 200 due to overflow of the light-emitting material into the conductive portion 310.

[0056] In some selectable embodiments, referring to Figures 1 and 3, the pixel limiter 410 includes a first sub-part 411 and a second sub-part 412 spaced apart from each other, with a first opening 420 in the first sub-part 411 and a second opening 430 in the second sub-part 412, and a weir 600 located on the side of the second sub-part 412 away from the substrate 100.

[0057] In these selectable embodiments, the pixel limiting section 410 is divided into a first sub-section 411 and a second sub-section 412, and the first sub-section 411 and the second sub-section 412 are spaced apart from each other, with a gap between them. When the light-emitting material overflows from the first opening 420 of the first sub-section 411 to the second opening 430 of the second sub-section 412, at least some of the light-emitting material overflows into the gap between the first sub-section 411 and the second sub-section 412. By accommodating the overflowed light-emitting material in this gap, the volume of light-emitting material overflowing to the side away from the second opening 430 of the weir 600 can be further reduced, and the problem of the electrical connection between the first electrode 700 and the first power signal line 200 being affected by the light-emitting material overflowing into the conductive section 310 can be more favorably improved.

[0058] There are multiple ways to set the shapes of the first sub-part 411 and the second sub-part 412. For example, as shown in Figures 3 and 4, the first sub-part 411 is annular, and the first opening 420 is located within the annular first sub-part 411. And / or, the second sub-part 412 is annular, and the second opening 430 is located within the annular second sub-part 412, with multiple first sub-parts 411 and multiple second sub-parts 412 distributed at intervals on the substrate 100.

[0059] Selectively, the weir portion 600 has a first surface 610 that is away from the substrate 100, the first sub-portion 411 has a second surface 401 that is away from the substrate 100, and the first surface 610 is located on the side where the second surface 401 is away from the substrate 100.

[0060] In these selectable embodiments, the weir 600 is provided projecting from the first sub-part 411 in a direction away from the substrate 100, that is, the first surface 610 is provided projecting from the second surface 401, and the height of the weir 600 relative to the substrate 100 is greater than the height of the first sub-part 411 relative to the substrate 100. When light-emitting material is placed in the first opening 420, the barrier of the weir 600 makes it difficult for the light-emitting material to fall onto the first surface 610 of the weir 600 and further makes it difficult for it to overflow into the second opening 430, further improving the hydrophobic effect of the weir 600 and improving the connection yield between the first electrode 700 and the conductive part 310.

[0061] In some other selectable embodiments, as shown in Figure 5, the orthographic projection of the weir 600 on the substrate 100 is located within the second opening 430, and the weir 600 is in direct contact with the substrate 100 through the second opening 430.

[0062] In these selectable embodiments, the weir portion 600 falls into the second opening 430, the weir portion 600 is positioned to surround the conductive portion 310 within the second opening 430, there is no pixel limiting portion 410 between the weir portion 600 and the substrate 100, and the manufacturing method of the weir portion 600 can be simplified.

[0063] Selectively, the aperture size of the second aperture 430 is larger than the size of its exposed conductive portion 310, that is, the orthographic projection of the conductive portion 310 on the substrate 100 lies within the orthographic projection of the second aperture 430 on the substrate 100, ensuring that a sufficient area of ​​the conductive portion 310 can be exposed.

[0064] Selectively, the weir 600 surrounds the conductive portion 310 exposed from the second opening 430. There may be a gap between the weir 600 and the conductive portion 310, that is, the conductive portion 310 is located within the region formed by the weir 600, and the conductive portion 310 and the weir 600 are spaced apart. Alternatively, the weir 600 and the conductive portion 310 are adjacent, with the weir 600 surrounding the conductive portion 310 and connected to its edge. Alternatively, some of the weir 600 is superimposed on the conductive portion 310.

[0065] Selectively, the pixel limiting portion has an inner wall surface facing the second opening that is spaced apart from the weir portion.

[0066] In these selectable embodiments, there is a gap between the inner wall surface of the pixel limiting portion 410 facing the second opening 430 and the weir portion 600, and when the light-emitting material overflows from the first opening 420 to the second opening 430, the partially light-emitting material remains in the gap, thereby reducing the amount of light-emitting material that overflows onto the upper surface of the weir portion 600, further improving the hydrophobic effect of the weir portion 600, and improving the connection yield between the first electrode 700 and the conductive portion 310.

[0067] When the weir 600 is selectively located within the second opening 430, and both the weir 600 and the pixel limiting portion 410 are provided on the substrate 100, the weir 600 and the pixel limiting portion 410 may be at the same height, or, as shown in Figure 5, the height of the weir 600 may be lower than that of the pixel limiting portion 410, i.e., the first surface 610 may be located on the side where the second surface 401 faces the substrate 100, or, as shown in Figure 6, the height of the weir 600 may be higher than that of the pixel limiting portion 410, i.e., the first surface 610 may be located on the side where the second surface 401 is away from the substrate 100, thereby achieving better hydrophobic performance.

[0068] In several selectable embodiments, as shown in Figures 1 and 2, the display panel 10 includes overlapping connection regions DA, where multiple overlapping connection regions DA are distributed at intervals, and the conductive portion 310 is located within the overlapping connection regions DA.

[0069] In these selectable embodiments, the display panel 10 is provided with an overlapping connection area DA, and the conductive portion 310 is provided within the overlapping connection area DA. When the light-emitting portion 510 is manufactured using a process such as inkjet printing or coating, by controlling components such as the inkjet printing nozzle, the problem of the light-emitting material overflowing onto the conductive portion 310 can be better improved by not spraying the light-emitting material onto the substrate 100 within the overlapping connection area DA.

[0070] Selectively, the weir 600 is located in the overlapping connection region DA, thereby better improving the problem of the light-emitting material overflowing into the conductive portion 310 within the overlapping connection region DA.

[0071] Selectively, the multiple conductive parts 310 are distributed at intervals along the extending direction of the overlapping connection region DA. By providing multiple conductive parts 310 within the same overlapping connection region DA, the first electrode 700 is electrically connected to the multiple conductive parts 310 and the first power signal line 200, further improving the connection yield between the first electrode 700 and the first power signal line 200. As shown in Figure 1, if the overlapping connection region DA extends along the second direction Y, the conductive parts 310 may be distributed at intervals along the second direction Y.

[0072] Selectively, as shown in Figure 7, the orthographic projection of the conductive portion 310 on the substrate 100 is circular, which allows the light-emitting material to spread to the outer periphery of the conductive portion 310, thereby better improving the problem of the light-emitting material easily overflowing onto the conductive portion 310.

[0073] Selectively, as shown in Figure 7, the orthographic projection of the weir 600 on the substrate 100 is annular, and the light-emitting material spreads outwards on the outer circumference of the weir 600, making it less likely to overflow into the conductive portion 310.

[0074] In other embodiments, as shown in Figures 8 and 9, the orthographic projection of the conductive portion 310 on the substrate 100 may be a polygon, such as a triangle or a square, and the shape of the weir portion 600 and the shape of the conductive portion 310 may match, and the orthographic projection of the weir portion 600 on the substrate 100 may be a polygonal annular shape.

[0075] In several selectable embodiments, continuing with reference to Figure 1, the overlapping connection regions DA are striped, and multiple overlapping connection regions DA are arranged side by side along a first direction X and / or a second direction Y, where the first direction X and the second direction Y intersect. Figure 1 shows, as an example, that the overlapping connection regions DA extend in the first direction X, and multiple overlapping connection regions DA are arranged side by side along the second direction Y. In other embodiments, the overlapping connection regions may extend along the second direction Y, and multiple overlapping connection regions DA may be arranged side by side along the first direction X.

[0076] In these selectable embodiments, the overlapping connection region DA is striped, and when manufacturing the light-emitting portion 510 by processes such as coating, it is easy to form a long striped overlapping connection region DA by closing one or two adjacent nozzle members, thereby facilitating the manufacturing and molding of the display panel 10.

[0077] Selectively, the extended dimension of the overlapping connection region DA in the second direction Y is greater than the extended dimension in the first direction X, and multiple overlapping connection regions DA are arranged side by side along the first direction X. As described above, the overlapping connection regions DA have a stripe-like shape, and multiple stripe-shaped overlapping connection regions DA are arranged side by side along their first direction X. By closing one or more sets of nozzles, multiple side-by-side overlapping connection regions DA can be formed.

[0078] For example, the light-emitting section 510 is formed by a coating process, and the material for the light-emitting section 510 is contained in a housing having multiple nozzle members, and after the multiple nozzle members are arranged side by side along a first direction X, the multiple nozzle members are moved along a second direction Y, and while moving, the light-emitting section 510 material is sprayed onto a responsive substrate, and the first direction X and the second direction Y intersect, for example, the first direction X and the second direction Y are perpendicular, thereby realizing large-area coating of the material for the light-emitting section 510. During the spraying process, by closing one or more nozzles, an overlapping connection region DA where the light-emitting section 510 material is not provided is formed, making the manufacturing method simple and easy to operate.

[0079] Selectively, the width of the overlapping connection region DA in the first direction X is 10 μm to 50 μm, and the length of the overlapping connection region DA in the second direction Y is 10 μm or more. When the dimensions of the overlapping connection region DA are within the above range, it is easier to form the overlapping connection region DA by closing the nozzle, while at the same time providing a large installation area for the conductive part 310, thereby facilitating the interconnection between the first electrode 700 and the conductive part 310.

[0080] Selectively, the distance between two adjacent overlapping connection regions DA is 5 μm or more. This improves not only the issue of the distance between two adjacent overlapping connection regions being too small, which affects the placement of the light-emitting section 510 and thus the light-emitting effect of the display panel 10, but also the issue of the distance between two adjacent overlapping connection regions DA being too large, which affects the electrical connection between the first electrode 700 and the conductive section 310.

[0081] In some selectable embodiments, as shown in Figure 10, the display panel 10 further includes a display area AA, and multiple overlapping connection areas DA are uniformly distributed within the display area AA.

[0082] In these embodiments, the overlapping connection area DA is uniformly distributed in a point-like manner so that multiple conductive parts 310 are uniformly distributed in the display area AA, thereby improving the overlapping connection yield between the first electrode 700 and the conductive parts 310.

[0083] In these selectable embodiments, the light-emitting material can be printed onto the substrate 100 by a pixel-level printing device to form the light-emitting portion 510.

[0084] Selectively, the shape of the overlapping connection region DA may be square, which is convenient for manufacturing and forming the overlapping connection region. Selectively, if the distance between two adjacent overlapping connection regions DA is 50 μm or less, the light-emitting material can be printed using a pixel-level printing device. Alternatively, if the distance between two adjacent overlapping connection regions DA is 80 μm or more, the light-emitting material can be printed using a non-pixel-level printing device.

[0085] For example, when manufacturing the light-emitting section 510, a pixel-level printing device can be used to print the light-emitting material onto a predetermined substrate. During printing, the location of the overlapping connection area DA is avoided, and overlapping connection areas DA that are not coated with the light-emitting material are formed.

[0086] There are multiple configurations for the shape of the weir section 600, and the cross-section of the weir section 600 may be provided as an equal cross-section in the direction away from the base plate 100.

[0087] Alternatively, in other embodiments, as shown in Figures 2 and 11, the weir 600 has a bottom surface 620 facing the substrate 100, a top surface (i.e., a first surface 610) away from the substrate 100, and a side surface 630 connecting the top surface and the bottom surface 620, where the side surface 630 is connected to the bottom surface 620 and extends away from the substrate 100, and the angle b between the side surface 630 and the bottom surface 620 is 10 degrees or more and 70 degrees or less.

[0088] In these selectable embodiments, the angle b between the side surface 630 and the bottom surface 620 is between 10 and 70 degrees, which reduces the distribution area of ​​the weir 600 and improves the problem that a large angle affects the continuity of the first electrode 700, making the first electrode 700 prone to fracture on the outer circumference of the weir 600.

[0089] In several selectable embodiments, the thickness d1 of the weir portion 600 and the thickness d2 of the light-emitting portion 510 satisfy d1 ≥ 15d2.

[0090] In these selectable embodiments, when d1 and d2 satisfy the above relationship, the thickness d1 of the weir 600 is too small, affecting the barrier effect of the weir 600 on the light-emitting material and further enhancing the hydrophobic effect.

[0091] Selectively, the thickness d1 of the weir 600 is 200 nm to 10 μm. When the thickness of the weir 600 is within the above numerical range, it is possible to improve the problem where the thickness d1 of the weir 600 is too small and affects the barrier function of the light-emitting material by the weir 600, improve the problem where the thickness d1 of the weir 600 is too large and affects the continuity of the first electrode 700, and improve the problem where the first electrode 700 is prone to fracture on the outer circumference side of the weir 600.

[0092] Selectively, the width of the weir section 600 is 2 μm to 10 μm. When the width of the weir section 600 is within the above range, it is possible to improve not only the issue of the weir section 600 being too small and affecting the hydrophobic effect, but also the issue of the weir section 600 being too large and affecting the distribution area of ​​the light-emitting section 510, thereby affecting the display effect of the display panel 10.

[0093] There are several installation methods for the conductive portion 310, and in several selectable embodiments, as shown in Figures 12 and 13, the conductive portion 310 has grooves 311 on the surface facing the first electrode 700.

[0094] In these selectable embodiments, the weir 600 does not completely block the light-emitting material, and when some of the light-emitting material overflows from the weir 600 into the conductive part 310, the light-emitting material is able to flow more easily within the groove 311 provided adjacent to the weir 600. The groove 311 prevents some of the light-emitting material from continuing to flow into the central region of the conductive part 310, thereby connecting the first electrode 700 to the central region of the conductive part 310 and improving the connection yield between the first electrode 700 and the conductive part 310. Furthermore, when the light-emitting material is located within the groove 311, the protrusions 312 located on both sides of the groove 311 can be exposed from the groove 311, making it less likely for the protrusions 312 to be covered by the light-emitting material, thereby improving the connection yield between the first electrode 700 and the conductive part 310.

[0095] There are several ways to install the grooves 311. For example, multiple grooves 311 can be provided on the surface of the weir section 600 to enhance the hydrophobic effect on the surface of the conductive section 310.

[0096] Selectively, as shown in Figure 14, the grooves 311 are formed extending in a first direction X, and multiple grooves 311 are arranged side by side along a second direction Y. By providing multiple side by side grooves 311, the hydrophobic effect can be further enhanced.

[0097] Selectively, the conductive portion 310 has projections 312 on a surface away from the substrate 100, with grooves 311 formed between two adjacent projections 312. In some selectable embodiments, the display panel 10 further includes a second electrode layer 800, which is located on the substrate 100-facing side of the pixel definition layer 400, and the second electrode layer 800 includes second electrodes 810 provided corresponding to each first aperture 420.

[0098] In these selectable embodiments, the second electrode 810 and the first electrode 700 interact to drive the light-emitting unit 510 to emit light. One of the first electrode 700 and the second electrode 810 is an anode, and the other is a cathode. In the embodiments of the present application, the first electrode 700 is exemplified as the cathode and the second electrode 810 as the anode.

[0099] If the display panel 10 includes a second electrode 810, as shown in Figure 3, the conductive portion 310 and the second electrode 810 may be provided in the same layer. This allows the conductive portion 310 and the second electrode 810 to be manufactured and molded in the same process step, thereby simplifying the manufacturing process of the display panel 10. In this case, the conductive portion 310 and the first power signal line 200 may be connected via a via.

[0100] In some other embodiments, as shown in Figure 15, the substrate 100 is further provided with a planarization layer 900, which is located on the side of the second electrode layer 800 away from the pixel definition layer 400, the conductive layer 300 is located on the side of the planarization layer 900 away from the second electrode layer 800, communication holes 910 are provided in the planarization layer 900, and the first electrodes 700 are connected to each other via the communication holes 910 and the conductive portion 310.

[0101] In these selectable embodiments, the conductive portion 310 and the second electrode 810 are provided in different layers, the conductive portion 310 is located on the side where the second electrode 810 faces the substrate 100, a communication hole 910 is provided in the planarization layer 900, the communication hole 910 and the second opening 430 communicate with each other, and the first electrode 700 is cured and connected in advance via the communication hole 910 and the conductive portion 310. In this case, the conductive portion 310 and the first power signal line 200 may be via connected, for example, the conductive portion 310 and the first power signal line 200 may be located in different film layer structures, and furthermore, the first power signal line 200 may be located in the film layer structure on the side where the conductive layer 300 faces the substrate 100, thereby enabling via connection between the conductive portion 310 and the first power signal line 200. Alternatively, the conductive part 310 and the first power signal line 200 are located in adjacent film layer structures, and the conductive part 310 and the first power signal line 200 are directly connected in contact, improving the connection yield between the conductive part 310 and the first power signal line 200.

[0102] There are multiple installation methods for the light-emitting section 510. Selectively, as shown in Figure 16, the light-emitting section 510 includes a laminated hole injection layer 511, a hole transport layer 512, and a light-emitting material layer 513. The light-emitting material layer 513 may be a quantum dot material, and either the hole injection layer 511 or the hole transport layer 512 can be fitted with related ink on the substrate 100 by processes such as inkjet printing or coating. In the display panel 10 according to the embodiment of the present application, the presence of the weir 600 improves the situation where ink overflows into the hydrophobic overlapping connection portion during the manufacturing of the hole injection layer 511 and / or the hole transport layer 512, affecting the electrical connection between the first electrode 700 and the first power signal line 200. Selectively, the light-emitting section 510 further includes an electron transport layer 514, which is provided between the first electrode 700 and the light-emitting material layer 513.

[0103] Embodiments of a second aspect of the present application further provide a display device including a display panel 10 according to any one of the embodiments of the first aspect described above. Since the display device according to the embodiment of the second aspect of the present application includes a display panel 10 according to any one of the embodiments of the first aspect described above, the display device according to the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 according to any one of the embodiments of the first aspect described above, and such effects are omitted here.

[0104] The display devices in the embodiments of this application include, but are not limited to, devices having display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, gates, smart landlines, and consoles.

[0105] A third embodiment of the present application further provides a method for manufacturing a display panel 10, which may be the display panel 10 of any of the first embodiments described above. Referring to Figures 1 to 17, the method for manufacturing the display panel 10 includes the following steps.

[0106] In step S01, as shown in Figure 18, a conductive material layer is provided on the substrate 100, and the conductive material layer is patterned to form the first power signal line 200.

[0107] In step S02, as shown in Figure 19, a conductive material layer is subsequently provided on the substrate 100 with the first power signal line 200, and the conductive material layer is patterned to form a conductive layer 300, which includes a plurality of conductive parts 310 located on the side of the first power signal line 200 away from the substrate 100.

[0108] If, selectively, the conductive portion 310 and the first power signal line 200 are located in adjacent film layer structures, and the conductive portion 310 and the first power signal line 200 are directly in contact with each other, the conductive material layer can be directly installed on the substrate 100 with the first power signal line 200, and the conductive material layer can be patterned to form the conductive layer 300.

[0109] If, selectively, the conductive portion 310 and the first power signal line 200 are located in different film layer structures and the conductive portion 310 and the first power signal line 200 are via-connected, before step S02, an insulating material layer is further installed on the substrate 100 with the first power signal line 200, and the insulating material is patterned to form vias. In step S02, a conductive material layer is provided following the insulating material layer, and the conductive material layer is patterned to form a conductive layer 300.

[0110] In step S03, as shown in Figure 20, a pixel definition material layer is placed on the substrate 100, and the pixel definition material layer is patterned to form a first aperture 420 and a second aperture 430, so that at least a portion of the conductive portion 310 is exposed through the second aperture 430.

[0111] In step S04, as shown in Figure 21, a hydrophobic material layer is provided on the substrate 100, and the hydrophobic material layer is patterned to create the weir portion 600 that surrounds the conductive portion 310.

[0112] Selectively, as described above, the weir 600 may be located in the pixel limiting portion 410, or the weir 600 may be located on the substrate 100 exposed from the second opening 430.

[0113] In step S05, as shown in Figure 22, the light-emitting layer 500 is manufactured following the substrate 100, and the light-emitting layer 500 includes a plurality of light-emitting parts 510, at least some of which are located in the first aperture 420.

[0114] In step S06, as shown in Figure 6, the first electrode 700 is manufactured following the substrate 100, and the first electrode 700 is connected to each other via the second opening 430 and the conductive portion 310.

[0115] In a display panel 10 manufactured by the method according to the embodiment of the present application, the light-emitting portion 510 of the light-emitting layer 500 is provided within a first aperture 420 opened in the pixel limiting portion 410, and the pixel limiting portion 410 can improve the problem of color crosstalk between different light-emitting portions 510. A second aperture 430 is further provided in the pixel limiting portion 410, and the orthographic projection of the second aperture 430 on the substrate 100 and the orthographic projection of the conductive portion 310 on the substrate 100 overlap at least partially, thereby allowing the conductive portion 310 to be exposed from the second aperture 430, and the first electrode 700 and the conductive portion 310 may be connected to each other via the second aperture 430. Since the conductive portion 310 of the conductive layer 300 and the first power signal line 200 are connected to each other, the first electrode 700 can be connected to the first power signal line 200 via the conductive portion 310, improving the problem of excessive voltage drop across the first electrode 700 and improving the display effect of the display panel 10. Furthermore, the substrate 100 is provided with a weir 600, which surrounds the conductive part 310. When manufacturing the light-emitting part 510, the barrier action of the weir 600 prevents the material of the light-emitting part 510 from overflowing onto the conductive part 310 and affecting the electrical connection between the first electrode 700 and the conductive part 310. This improves the connection yield between the first electrode 700 and the conductive part 310, better resolves the voltage drop problem of the first electrode 700, and enhances the display effect of the display panel 10. Therefore, the embodiment of the present invention can improve the display performance of the display panel 10 by providing the weir 600.

[0116] Selectively, as described above, the display panel 10 includes an overlapping connection region DA. Selectively, the light-emitting portion 510 includes a communication opening located in the overlapping connection region DA, and the conductive portion 310 is provided in the overlapping connection region DA, wherein the extending dimension of the overlapping connection region DA in the first direction X is greater than the extending dimension in the second direction Y. Then, in step S05, the light-emitting material can be applied to the substrate 100 by moving a plurality of parallel nozzles along the first direction X, and one or more adjacent nozzles can be closed for a predetermined period of time to form the light-emitting portion 510 including the communication opening in the overlapping connection region DA.

[0117] In these selectable embodiments, when the light-emitting material is applied to the substrate 100 by inkjet printing, for example, when the light-emitting material is sprayed toward the substrate 100 by a row of nozzles arranged along a second direction Y, the light-emitting material can be applied to the entire surface of the substrate 100 by moving this series of nozzles along a first direction X. By closing one or two adjacent nozzles in a row, the light-emitting material is not directly sprayed into the striped overlapping connection area DA on the substrate 100, and it is possible to improve the situation in which the conductive portion 310 is covered with the light-emitting material and affects the connection with the first electrode 700.

[0118] In some other embodiments, in step S05, a light-emitting material may be printed on the substrate 100 using pixel-level or non-pixel-level printing techniques.

[0119] Although the present application has been described above with reference to preferred embodiments, various improvements are possible without departing from the scope of the application, and some of the components may be replaced with equivalents. In particular, the technical features mentioned in each embodiment can be combined in any way, as long as there is no structural inconsistency. The present application is not limited to the specific embodiments disclosed herein, but includes all embodiments included in the claims. [Explanation of Symbols]

[0120] 10: Display Panel 100: Circuit board 200: 1st power signal line 300: conductive layer, 310: conductive part, 311: groove, 312: projection, 312a: first subsegment, 312b: second subsegment 400: Pixel definition layer, 401: Second surface, 410: Pixel limiting area, 411: First sub-area, 412: Second sub-area, 420: First aperture, 430: Second aperture 500: Light-emitting layer, 510: Light-emitting section, 511: Hole injection layer, 512: Hole transport layer, 513: Light-emitting material layer, 514: Electron transport layer 600: Weir, 610: First surface, 620: Bottom, 630: Side 700: 1st electrode 800: Second electrode layer, 810: Second electrode 900: Flattening layer, 910: Communication hole DA: Overlay connection area, AA: Display area, X: First direction, Y: Second direction, Z: Third direction

Claims

1. circuit board and A first power signal line provided on the aforementioned substrate, A conductive layer provided on the first power signal line and including a plurality of conductive parts, wherein the conductive parts and the first power signal line are connected to each other, A pixel definition layer including a pixel limiting portion and a first aperture and a second aperture opened in the pixel limiting portion, wherein the orthographic projection of the second aperture on the substrate and the orthographic projection of the conductive portion on the substrate overlap in at least a portion of the same area. A light-emitting layer provided on the side of the substrate where the conductive layer is located and including a plurality of light-emitting portions, at least a portion of which are located within the first opening, A weir is provided on the substrate and surrounds the conductive portion, and the material of the weir is sparse with the material of the light-emitting portion, The first electrode is provided on the side of the light-emitting layer and the weir that is away from the substrate, and is connected to the conductive layer through the second opening, The orthographic projection of the weir portion on the substrate is located within the second opening, and the weir portion is in direct contact with the substrate within the second opening. A display panel characterized by the following features.

2. The pixel limiting portion includes a first sub-part and a second sub-part provided at a distance from each other, the first opening is provided in the first sub-part, the second opening is provided in the second sub-part, and the weir is located on the side of the second sub-part away from the substrate. The weir portion has a first surface that is separated from the substrate, and the first sub-portion has a second surface that is separated from the substrate, and the first surface is located on the side where the second surface is separated from the substrate. The display panel according to feature 1.

3. The inner wall surface of the pixel limiting portion facing the second opening and the weir portion are provided with a gap between them. The display panel according to feature 1.

4. The display panel includes overlapping connection regions, the multiple overlapping connection regions are distributed at intervals, the conductive portion is located in the overlapping connection region, and the overlapping connection region is a region where light-emitting material is not applied. The weir section is located in the overlapping connection area. The multiple conductive portions are distributed at intervals along the extending direction of the overlapping connection region, The orthographic projection of the conductive portion on the substrate is circular. The orthographic projection of the weir portion on the substrate is annular. The display panel according to feature 1.

5. The overlapping connection region exhibits a stripe-like shape, and the multiple overlapping connection regions are arranged side by side along a first direction and / or a second direction, and the first direction and the second direction intersect. The extension dimension of the overlapping connection region in the second direction is greater than the extension dimension in the first direction, and the multiple overlapping connection regions are arranged side by side along the first direction. The width of the overlapping connection region in the first direction is 10 μm to 50 μm, and the length of the overlapping connection region in the second direction is 10 μm or more. The distance between two adjacent overlapping connection regions is 5 μm or more. Alternatively, the display panel further includes a display area, and the multiple overlapping connection areas are uniformly distributed within the display area. The aforementioned overlapping connection region is square, The distance between two adjacent overlapping connection regions is 50 μm or less, or the spacing between two adjacent overlapping connection regions is 80 μm or more. The display panel according to feature 4.

6. The weir portion has a bottom surface facing the substrate and a side surface connected to the bottom surface and extending away from the substrate, and the angle between the side surface and the bottom surface is 10 degrees or more and 70 degrees or less. Alternatively, the thickness d of the weir section. １ and the thickness d of the light-emitting part ２ toga, d １ ≥15d ２ Satisfying the conditions, and / or the thickness d of the weir １ The range is 200 nm to 10 μm. And / or, the width of the weir is 2 μm to 10 μm. Alternatively, the conductive portion may have grooves facing the surface of the first electrode. Multiple grooves are provided at intervals. The grooves are formed extending in a first direction, and a plurality of the grooves are arranged side by side along a second direction. The display panel according to feature 1.

7. The display panel further comprises a second electrode layer located on the side of the pixel definition layer facing the substrate and including a second electrode provided corresponding to each of the first apertures. The conductive portion and the second electrode are provided in the same layer, or the substrate further comprises a planarization layer, the planarization layer is located on the side of the second electrode layer away from the pixel definition layer, the conductive layer is located on the side of the planarization layer away from the second electrode layer, a communication hole is provided in the planarization layer, and the first electrode is connected to each other via the communication hole and the conductive portion. The conductive portion is in contact with the first power signal line, or the conductive layer is via-connected to the first power signal line. Alternatively, the weir portion has a surface that is hydrophobic and / or oleophobic, low energy surface, The display panel according to feature 1.

8. Includes a display panel according to any one of claims 1 to 7, A display device characterized by the following features.

9. A method for manufacturing a display panel, The steps include: providing a conductive material layer on a substrate, and patterning the conductive material layer to form a first power signal line; The steps include: providing the conductive material layer on the substrate with the first power signal line; patterning the conductive material layer to form a conductive layer; and the conductive layer including a plurality of conductive portions located on the side of the first power signal line away from the substrate; The steps include providing a pixel definition material layer on the substrate, patterning the pixel definition material layer to form a first aperture and a second aperture, and exposing at least a portion of the conductive portion from the second aperture, The steps include: providing a hydrophobic material layer on the substrate, patterning the hydrophobic material layer to create a weir surrounding the conductive portion, the orthogonal projection of the weir on the substrate being located within the second opening, and the weir being in direct contact with the substrate within the second opening; The steps include: continuing to manufacture an emissive layer on the substrate, wherein the emissive layer includes a plurality of light-emitting parts, and at least some of the light-emitting parts are located at the first opening; The step of subsequently manufacturing a first electrode on the substrate, wherein the first electrode is connected to each other via the second opening and the conductive portion, A method for manufacturing a display panel, characterized by the following:

10. The display panel includes an overlapping connection region, the conductive portion is provided in the overlapping connection region, the extension dimension of the overlapping connection region in the first direction is greater than the extension dimension in the second direction, and in the step of continuing to manufacture the light-emitting layer on the substrate, Multiple nozzles arranged side by side are moved in the first direction to apply a light-emitting material to the substrate, and by closing one or more adjacent nozzles for a predetermined period of time, the light-emitting portion is formed in the overlapping connection region. The method for manufacturing a display panel according to feature 9.

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