Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, and the display panel comprises a substrate; the signal line layer is positioned on one side of the substrate and comprises a first power supply signal line; the conductive part is located on the side, away from the substrate, of the signal line layer, and the conductive part is connected with the first power signal line; the pixel defining layer is arranged on the side, away from the substrate, of the signal line layer, and the pixel defining layer comprises a pixel limiting part and a pixel opening formed in the pixel limiting part; the light-emitting layer comprises a light-emitting part, at least part of the light-emitting part is located in the pixel opening, a receding opening is formed in the light-emitting part, and the orthographic projection of the receding opening on the substrate and the orthographic projection of the conductive part on the substrate are at least partially overlapped; the first electrode is arranged on the side, away from the substrate, of the light-emitting layer and connected with the conductive part through the receding opening. The use performance of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) displays, also known as organic electroluminescent displays, offer a range of advantages over existing liquid crystal displays (LCDs), including autonomous illumination, wide viewing angles, ultra-lightness, ultra-thinness, high brightness, low power consumption, and fast response times. Their response speed can be up to 1,000 times that of LCDs, making them a highly popular flat-panel display product both domestically and internationally, with broad application prospects. Quantum dot (QD) materials, with their high color purity, adjustable wavelength, and stable material properties, offer significant advantages in the pursuit of high-color-gamut color displays.

[0003] Quantum-dot light-emitting diodes (QLEDs) are a new type of light-emitting device. Due to their self-luminous properties (no need for an additional light source), narrow emission peaks, tunable color, and high luminous efficiency, QLEDs are becoming a mainstream development direction in display technology.

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

[0005] Embodiments of the present application provide a display panel and a display device, aiming to improve the performance of the display panel.

[0006] An embodiment of the first aspect of the present application provides a display panel, comprising: a substrate; a signal line layer, located on one side of the substrate and including a first power signal line; a conductive portion, located on a side of the signal line layer facing away from the substrate, the conductive portion being connected to the first power signal line; a pixel definition layer, arranged on a side of the signal line layer facing away from the substrate, the pixel definition layer including a pixel defining portion and a pixel opening opened in the pixel defining portion; a light-emitting layer, including a light-emitting portion, at least a portion of the light-emitting portion being located within the pixel opening, a clearance opening being provided on the light-emitting portion, the clearance opening being at least partially overlapped with the orthographic projection of the conductive portion on the substrate on the substrate; a first electrode, arranged on a side of the light-emitting layer facing away from the substrate and being interconnected with the conductive portion via the clearance opening.

[0007] According to the implementation of the first aspect of the present application, a plurality of conductive protrusions are provided on the surface of the conductive portion facing away from the substrate, and two adjacent conductive protrusions are spaced apart to form a hydrophobic groove.

[0008] According to any of the foregoing embodiments of the first aspect of the present application, the conductive protrusions are formed to extend in the first direction, and a plurality of conductive protrusions are spaced apart in the second direction, and the first direction intersects the second direction.

[0009] According to any of the foregoing embodiments of the first aspect of the present application, at least one conductive protrusion includes a first segment and a second segment distributed in a direction away from the substrate, and the orthographic projection of the second segment on the substrate is located within the orthographic projection of the first segment on the substrate.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, the width of the first segment is greater than the width of the second segment, and the length of the first segment is equal to the length of the second segment.

[0011] According to any of the foregoing embodiments of the first aspect of the present application, the width of the second segment is 10 nm to 1 μm.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, the width of the first segment is greater than or equal to 1 μm.

[0013] According to any of the foregoing embodiments of the first aspect of the present application, the conductive protrusions are provided with a constant cross-section in a direction away from the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the width of the conductive protrusions is 10 nm to 1 μm.

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the conductive portion includes a first surface facing away from the substrate, and the pixel defining portion includes a second surface facing away from the substrate, and the first surface is located on a side of the second surface facing away from the substrate.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the conductive portion includes a first surface facing away from the substrate, and the pixel defining portion includes a second surface facing away from the substrate, and the first surface is located on a side of the second surface facing away from the substrate.

[0017] According to any of the foregoing embodiments of the first aspect of the present application, the pixel defining portion includes a communication hole, the display panel includes a conductive filling portion, at least a part of the conductive filling portion is located in the communication hole and is connected to the first power signal line, and the conductive portion is connected to the conductive filling portion so that the conductive portion is connected to the first power signal line via the conductive filling portion.

[0018] According to any of the foregoing embodiments of the first aspect of the present application, the conductive filling portion is located in the communication hole, and the conductive portion is located on a side of the conductive filling portion facing away from the substrate.

[0019] According to any of the foregoing embodiments of the first aspect of the present application, the conductive filling portion includes a third surface facing away from the substrate, the third surface is located on a side of the second surface facing away from the substrate, or the third surface and the second surface are coplanar.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the conductive filling portion includes a first part and a second part that are connected to each other, the first part is located in the connecting hole and is connected to the first power signal line, and the second part is located on the side of the pixel defining portion away from the substrate, and the conductive portion and the second part are connected to each other.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the conductive portion is located on a side of the second portion away from the pixel defining portion, or the conductive portion is connected to a peripheral side of the second portion.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the conductive part includes a conductive material.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the conductive part includes at least one of a metal material and a metal oxide material.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the thickness of the conductive portion is 10 nm to 1 μm.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the light-emitting portion includes quantum dot material.

[0026] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel according to any one of the above-mentioned embodiments of the first aspect.

[0027] In the display panel provided in the present application, the display panel includes a substrate, a signal line layer, a conductive part, a light-emitting layer and a first electrode. The light-emitting part is used to emit light to realize the display of the display panel, and at least part of the light-emitting part is located in the pixel opening of the pixel definition layer to improve the light mixing between light-emitting parts of different colors. A clearance opening is provided on the light-emitting part, and the first electrode can be interconnected with the conductive part through the clearance opening, and then interconnected with the first power signal line, which can reduce the voltage drop on the first electrode and improve the display effect of the display panel. The conductive part has a hydrophobic effect. When the light-emitting part is prepared by inkjet printing, coating and other processes, it can improve the electrical connection effect of the light-emitting part falling on the conductive part and affecting the first electrode and the conductive part, which can further improve the display effect of the display panel and thus improve the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0029] Figure 1 is a structural diagram of a display panel provided in an embodiment of the present application;

[0030] Figure 2 yes Figure 1Cross-sectional view taken along line A-A in one example;

[0031] Figure 3 is a partial cross-sectional view of a conductive portion of a display panel provided by an embodiment of the present application;

[0032] Figure 4 is a top view of a conductive portion of a display panel provided by an embodiment of the present application;

[0033] Figure 5 is a partial cross-sectional view of a conductive portion of a display panel provided by another embodiment of the present application;

[0034] Figure 6 is Figure 1 Cross-sectional view taken along line A-A in another example;

[0035] Figure 7 is Figure 1 Cross-sectional view taken along line A-A in yet another example;

[0036] Figure 8 is Figure 1 Cross-sectional view taken along line A-A in still another example;

[0037] Figure 9 is a schematic structural diagram of a light-emitting portion of a display panel provided by an embodiment of the present application.

[0038] Explanation of reference numerals:

[0039] 10, display panel;

[0040] 100, substrate;

[0041] 200, signal line layer; 210, first power signal line;

[0042] 300, conductive portion; 301, first surface; 310, conductive protrusion; 311, first segment; 312, second segment; 320, drainage groove;

[0043] 400, pixel definition layer; 401, second surface; 410, pixel defining portion; 411, communication hole; 420, pixel opening;

[0044] 500, light-emitting layer; 510, light-emitting portion; 511, hole injection layer; 512, hole transport layer; 513, light-emitting material layer; 514, electron transport layer;

[0045] 600, first electrode;

[0046] 700, conductive filling portion; 701, third surface; 710, first part; 720, second part;

[0047] X, the first direction; Y, the second direction; Z, the third direction. Detailed implementation mode

[0048] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are presented to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown to avoid unnecessary obscurity to the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0049] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality" is more than two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] The orientation terms appearing in the following description are all the directions shown in the drawings, and do not specifically limit the structure of the embodiments of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0051] For a better understanding of the present application, the following is combined with Figures 1 to 9 The display panel and display device of the embodiments of the present application are described in detail.

[0052] Please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a display panel provided by an embodiment of the present application, Figure 2 is Figure 1 The cross-sectional view at A-A in

[0053] As shown in Figure 1 and Figure 2As shown in the figure, an embodiment of the first aspect of the present application provides a display panel 10, which includes a substrate 100, a signal line layer 200, a conductive portion 300, a pixel definition layer 400, a light-emitting layer 500, and a first electrode 600; the signal line layer 200 is located on one side of the substrate 100 and includes a first power supply signal line 210; the conductive portion 300 is located on the side of the signal line layer 200 away from the substrate 100, and the conductive portion 300 is connected to the first power supply signal line 210; the pixel definition layer 400 is disposed on the side of the signal line layer 200 away from the substrate 100, and the pixel definition layer 400 includes a pixel defining portion 410 and a pixel opening 420 formed in the pixel defining portion 410; the light-emitting layer 500 includes a light-emitting portion 510, at least part of the light-emitting portion 510 is located within the pixel opening 420, and a relief opening is provided on the light-emitting portion 510, and at least part of the orthographic projection of the relief opening on the substrate 100 overlaps with the orthographic projection of the conductive portion 300 on the substrate 100; the first electrode 600 is disposed on the side of the light-emitting layer 500 away from the substrate 100 and is interconnected with the conductive portion 300 via the relief opening.

[0054] In the display panel 10 provided by the present application, the display panel 10 includes a substrate 100, a signal line layer 200, a conductive portion 300, a light-emitting layer 500, and a first electrode 600. The light-emitting layer 500 includes a pixel definition layer 400 and a light-emitting portion 510, and the light-emitting portion 510 is used for emitting light to realize the display of the display panel 10. At least part of the light-emitting portion 510 is located within the pixel opening 420 of the pixel definition layer 400 to improve the light mixing between different color light-emitting portions 510. A relief opening is provided on the light-emitting portion 510, and the first electrode 600 can be interconnected with the conductive portion 300 through the relief opening, and then interconnected with the first power supply signal line 210, which can reduce the voltage drop on the first electrode 600 and improve the display effect of the display panel 10. The conductive portion 300 has a hydrophobic effect. When the light-emitting portion 510 is prepared by processes such as inkjet printing and coating, it can prevent the light-emitting portion 510 from falling onto the conductive portion 300 and affecting the electrical connection effect between the first electrode 600 and the conductive portion 300, which can further improve the display effect of the display panel 10 and thus improve the service performance of the display panel 10.

[0055] The first power supply signal line 210 can be, for example, a low-level power supply signal line or a negative voltage power supply signal line.

[0056] There are various ways to arrange the light-emitting portion 510. For example, the material of the light-emitting portion 510 includes ink, and the light-emitting portion 510 is prepared on the pixel definition layer 400 by processes such as inkjet printing and coating. The light-emitting portion 510 can be a quantum dot light-emitting diode, and in other embodiments, the light-emitting portion 510 can also be an organic light-emitting diode, etc.

[0057] There are various ways to set the relative position relationship between the pixel opening 420 and the conductive portion 300. For example, asFigure 1 As shown, a plurality of pixel apertures 420 are arranged in an array in a first direction X and a second direction Y. The conductive portion 300 can be located between adjacent two rows of pixel apertures 420, or the conductive portion 300 can be located between adjacent two columns of pixel apertures 420, or the conductive portion 300 is both located between adjacent two columns of pixel apertures 420 and between adjacent two rows of pixel apertures 420. There are various ways to set the number of the conductive portions 300 in the display panel 10. The conductive portion 300 can be one, or the conductive portion 300 can be multiple. When the conductive portion 300 is multiple, the conductive portions 300 can be evenly distributed in the display area of the display panel 10 to improve the electrical connection balance between the first electrode 600 and the conductive portion 300.

[0058] There are various ways to set the orthographic projection of the conductive portion 300 on the substrate 100. The orthographic projection of the conductive portion 300 on the substrate 100 can be circular, elliptical, polygonal, etc. Optionally, the orthographic projection of the conductive portion 3 on the substrate 100 is circular, so that the light-emitting material can spread better on the circumferential side of the conductive portion 300 and improve the hydrophobic and oleophobic effects of the conductive portion 300.

[0059] There are various ways to set the conductive portion 30, for example, the material of the conductive portion 300 includes a hydrophobic conductive material, so that the conductive portion 300 can not only have electrical conductivity but also have hydrophobic properties, improving the problem that the light-emitting portion 510 falls on the conductive portion 300 and affects the electrical connection effect between the first electrode 600 and the conductive portion 300. The hydrophobic property here refers to the "hydrophobic and oleophobic" property, which means that the liquid is not easily in contact with the conductive portion 300. The hydrophobic property refers to not being easily in contact with the liquid, rather than simply not being easily in contact with water.

[0060] In some other alternative embodiments, please refer to Figures 1 to 3 together. A plurality of conductive protrusions 310 are provided on the surface of the conductive portion opposite to the substrate 100, and adjacent two conductive protrusions 310 are arranged at intervals to form a hydrophobic groove 320.

[0061] In these alternative embodiments, when the hydrophobic grooves 320 can be formed between the conductive protrusions 310 on the conductive portion 300, when the light-emitting material overflows from the outside to the conductive portion 300, the light-emitting material will flow along the hydrophobic groove 320 in the hydrophobic groove 320, thereby improving the problem that the light-emitting material continues to overflow to the center of the conductive portion 300, so that the center of the conductive portion 300 can not be covered by the light-emitting material, thus improving the problem that the light-emitting portion 510 falls on the conductive portion 300 and affects the electrical connection effect between the first electrode 600 and the conductive portion 300, and can further improve the display effect of the display panel 10, and then improve the use performance of the display panel 10.

[0062] In addition, when the light-emitting material overflows to the conductive part 300, the light-emitting material can overflow into the water drainage groove 320, and the conductive protrusions 310 can be exposed by the light-emitting material to be connected to the first electrode 600, which can improve the connection yield between the first electrode 600 and the conductive part 300.

[0063] Optionally, the water drainage groove 320 is not provided through the conductive part 300, that is, the depth of the water drainage groove 320 is less than the thickness of the conductive part 300, so as to ensure the electrical connection performance of the conductive part 300.

[0064] Optionally, please refer to Figure 3 and Figure 4 , the number of the conductive protrusions 310 is more than three, and the more than three conductive protrusions 310 are arranged side by side, so as to form more than two water drainage grooves 320 arranged side by side. When the light-emitting material overflows from one side to the conductive part 300, it can flow in the first water drainage groove 320, improving the problem that it continues to overflow towards the conductive part 300. In order to more clearly distinguish the conductive protrusions 310 and the water drainage grooves 320, in Figure 4 , the position filled with the cross-sectional pattern is shown as the water drainage groove 320, and the position not filled with the cross-sectional pattern is shown as the conductive protrusion 310.

[0065] Optionally, the conductive protrusions 310 are formed by extending along the first direction X, and the plurality of conductive protrusions 310 are spaced apart along the second direction Y, and the first direction X intersects the second direction Y. When the light-emitting material overflows into the water drainage groove 320 along the second direction Y, the light-emitting material can flow along the first direction X in the water drainage groove 320, improving the problem that it continues to overflow along the second direction Y to other water drainage grooves 320 and affecting the electrical connection between the first electrode 600 and the conductive part 300.

[0066] There are various ways to set the shape of the conductive protrusions 310. The cross-section of the conductive protrusions 310 in the direction away from the substrate 100 can be set with an equal cross-section or an unequal cross-section.

[0067] For example, in some optional embodiments, as Figure 3 shown, the conductive protrusions 310 are set with an equal cross-section in the direction away from the substrate 100. This can simplify the preparation method of the conductive protrusions 310 and facilitate the preparation and forming of the conductive protrusions 310.

[0068] When the conductive protrusions 310 are set with an equal cross-section in the direction away from the substrate 100, the cross-section of the conductive protrusions 310 can be rectangular. In other embodiments, the conductive protrusions 310 gradually decrease in the direction away from the substrate 100. For example, the cross-section of the conductive protrusions 310 is trapezoidal.

[0069] When the conductive protrusion 310 is provided with a uniform cross-section in the direction away from the substrate 100, the width of the conductive protrusion 310 can be 10 nm to 1 μm, so as to improve the situation that the too large width of the conductive protrusion 310 affects the distribution area of the hydrophobic groove 320 and the hydrophobic effect of the conductive part 300, and can also improve the situation that the too small width of the conductive protrusion 310 affects the manufacturing difficulty.

[0070] Optionally, when the conductive protrusion 310 extends along the first direction X and a plurality of conductive protrusions 310 are arranged side by side along the second direction Y, the width of the conductive protrusion 310 can be the second direction Y.

[0071] Optionally, the distance between two adjacent conductive protrusions 310 can be 10 nm to 1 μm. For example, the distance between two adjacent conductive protrusions 310 can be 10 nm, 11 nm, 15 nm, etc., and the distance between two adjacent conductive protrusions 310 can also be 0.1 μm, 0.5 μm, 0.8 μm, 1 μm, etc., as long as the distance between two adjacent conductive protrusions 310 is between 10 nm and 1 μm. That is, the width of the hydrophobic groove 320 is 10 nm to 1 μm. This is to improve the situation that the hydrophobic ability is affected due to the too large or too small width of the hydrophobic groove 320.

[0072] In some other alternative embodiments, please refer to Figure 2 and Figure 5 , at least one conductive protrusion 310 includes a first segment 311 and a second segment 312 distributed in the direction away from the substrate 100, and the orthographic projection of the second segment 312 on the substrate 100 is located within the orthographic projection of the first segment 311 on the substrate 100.

[0073] In these alternative embodiments, the conductive protrusion 310 includes a first segment 311 and a second segment 312 with unequal cross-sections. The second segment 312 is located on the side of the first segment 311 away from the substrate 100, and the orthographic projection of the second segment 312 on the substrate 100 is located within the orthographic projection of the first segment 311 on the substrate 100. That is, the cross-section of the second segment 312 is smaller than that of the first segment 311, which can further reduce the contact between the light-emitting material and the conductive part 300 and thus reduce the surface energy, improving the hydrophobic effect.

[0074] Optionally, the width of the second segment 312 is smaller than the width of the first segment 311, so that the cross-section of the second segment 312 is smaller than that of the first segment 311 and the hydrophobic effect is improved.

[0075] Optionally, the length of the second segment 312 is equal to the length of the first segment 311, which improves the phenomenon that the light-emitting material overflows from one side in the length direction of the second segment 312 to the adjacent hydrophobic groove 320, further improving the hydrophobic effect.

[0076] As described above, when the conductive protrusions 310 extend along the first direction X and a plurality of conductive protrusions 310 are arranged side by side along the second direction Y, the length direction of the first segment 311 and the second segment 312 is the first direction X, and the width direction of the first segment 311 and the second segment 312 is the second direction Y.

[0077] Optionally, the width of the second segment 312 is 10 nm to 1 μm, so as to improve the distribution area of the water drainage groove 320 affected by the too large width of the second segment 312, affect the hydrophobic effect of the conductive part 300, and also improve the manufacturing difficulty affected by the too small width of the second segment 312.

[0078] Optionally, the width of the first segment 311 is greater than or equal to 1 μm, so that the width of the first segment 311 is relatively large, which can provide support for the second segment 312, and can also reduce the distance between two adjacent first segments 311 to a certain extent, making it difficult for the light-emitting material to overflow between two adjacent first segments 311, and further improving the hydrophobic effect.

[0079] Optionally, the distance between two adjacent second segments 312 can be 12 nm to 1000 nm. For example, the distance between two adjacent second segments 312 can be 12 nm, 13 nm, 14 nm, 14.5 nm, 998 nm, 999.5 nm, 1000 nm, etc.

[0080] Optionally, the distance between two adjacent first segments 311 can be 10 nm to 500 nm. The distance between two adjacent first segments 311 can be 10 nm, 11 nm, 11.2 nm, 11.8 nm, 12 nm, 13 nm, 14 nm, 14.5 nm, 49 nm, 49.5 nm, 500 nm, etc.

[0081] In some alternative embodiments, please also refer to Figure 1 and Figure 6 , the distance from the surface of the conductive part 300 facing away from the substrate 100 to the substrate 100 is greater than the distance from the surface of the pixel defining part 410 facing away from the substrate 100 to the substrate 100. For example, the conductive part 300 includes a first surface 301 facing away from the substrate 100, the pixel defining part 410 includes a second surface 401 facing away from the substrate 100, and the first surface 301 is located on the side of the second surface 401 facing away from the substrate 100.

[0082] In these alternative embodiments, the conductive portion 300 protrudes relative to the pixel defining portion 410 in a direction away from the substrate 100, that is, the first surface 301 protrudes relative to the second surface 401, and the height of the conductive portion 300 relative to the substrate 100 is greater than the height of the pixel defining portion 410 relative to the substrate 100. When a light-emitting material is disposed in the pixel opening 420 of the pixel defining portion 410, due to the blocking of the conductive portion 300, it is difficult for the light-emitting material to fall on the first surface 301 of the conductive portion 300, thereby improving the hydrophobic effect.

[0083] Optionally, when the conductive portion 300 includes a conductive protrusion 310 and a hydrophobic groove 320, the first surface 301 may be the surface of the conductive protrusion 310 facing away from the substrate 100, or the first surface 301 may also be the bottom wall surface of the hydrophobic groove 320. When the conductive protrusion 310 includes a first segment 311 and a second segment 312, the first surface 301 may be the surface of the first segment 311 facing away from the substrate 100, and the first surface 301 may also be the surface of the second segment 312 facing away from the substrate 100.

[0084] In some alternative embodiments, the pixel defining portion 410 includes a communication hole 411, the display panel 10 further includes a conductive filling portion 700, at least a part of the conductive filling portion 700 is located in the communication hole 411 and is connected to the first power signal line 210, and the conductive portion 300 is connected to the conductive filling portion 700 so that the conductive portion 300 is connected to the first power signal line 210 via the conductive filling portion 700.

[0085] In these alternative embodiments, the conductive filling portion 700 may be disposed in the communication hole 411 of the pixel defining portion 410, so that the conductive filling portion 700 is electrically connected to the first power signal line 210 through the communication hole 411, and the conductive portion 300 is electrically connected to the conductive filling portion 700, thereby realizing the electrical connection between the conductive portion 300 and the first power signal line 210.

[0086] There are various ways to dispose the conductive filling portion 700. Optionally, as Figure 6 shown, the conductive filling portion 700 is located in the communication hole 411, and the conductive portion 300 is located on the side of the conductive filling portion 700 facing away from the substrate 100. That is, the conductive filling portion 700 is filled in the communication hole 411 of the pixel defining portion 410 to support the conductive portion 300, and to improve the problem that the first surface 301 of the conductive portion 300 is lower than the second surface 401 when the conductive portion 300 is disposed in the communication hole 411.

[0087] Optionally, the conductive filling portion 700 includes a third surface 701 facing away from the substrate 100, and the third surface 701 is located on the side of the second surface 401 facing away from the substrate 100, or the third surface 701 and the second surface 401 are coplanar.

[0088] In these embodiments, when the conductive portion 300 is disposed on the third surface 701, since the conductive portion 300 has a certain thickness itself, it can ensure that the first surface 301 is located on the side of the second surface 401 away from the substrate 100, thereby ensuring the hydrophobic effect.

[0089] In some other alternative embodiments, such as Figure 7 and Figure 8 As shown, the conductive filling portion 700 includes a first portion 710 and a second portion 720 that are connected to each other. The first portion 710 is located in the communication hole 411 and is connected to the first power signal line 210. The second portion 720 is located on the side of the pixel defining portion 410 away from the substrate 100, and the conductive portion 300 and the second portion 720 are connected to each other.

[0090] In these alternative embodiments, a part of the conductive filling portion 700 (i.e., the first portion 710) is located in the communication hole 411 and is connected to the first power signal line 210. Another part of the conductive filling portion 700 (i.e., the second portion 720) extends onto the pixel defining portion 410. The conductive portion 300 can be directly disposed on the pixel defining portion 410 and connected to the second portion 720, so that the conductive portion 300 protrudes from the pixel defining portion 410, thereby ensuring the hydrophobic effect.

[0091] In the above embodiments, optionally, the thickness of the conductive filling portion 700 can be set to be relatively small, and the first portion 710 does not completely fill the communication hole 411. The surface of the first portion 710 away from the substrate 100 is located on the side of the second surface 401 facing the substrate 100. When the light-emitting material overflows, the light-emitting material can overflow to the side of the first portion 710 away from the substrate 100, which can reduce the light-emitting material overflowing to the second portion 720 and further improve the hydrophobic effect.

[0092] In the above embodiments, optionally, as Figure 7 shown, the conductive portion 300 can be disposed on the side of the second portion 720 away from the substrate 100 to further increase the height of the conductive portion 300 and can appropriately increase the overlapping area of the second portion 720 and the conductive portion 300 to improve the electrical connection effect. In some other embodiments, as Figure 8 shown, the conductive portion 300 can also be connected to the peripheral side of the second portion 720, that is, the conductive portion 300 and the second portion 720 are connected through the side surface.

[0093] In any of the above embodiments, the conductive portion 300 includes a conductive material, and the material of the conductive portion 300 can be a metal material or a metal oxide material, so that the conductive portion 300 has good electrical conductivity.

[0094] The thickness of the conductive portion 300 can be from 10 nm to 1 μm. For example, the thickness of the conductive portion 300 can be 10 nm, 11 nm, 11.2 nm, 11.6 nm, 12 nm, 13 nm, 200 nm, 500 nm, 800 nm, 961 nm, 1 μm, etc., so as to improve the case where the thickness of the conductive portion 300 is too small and affects its conductivity, or the case where the thickness of the conductive portion 300 is too large and increases the difficulty of the manufacturing process.

[0095] When the conductive portion 300 includes the conductive protrusion 310 and the drainage groove 320, the thickness of the conductive portion 300 can be the distance between the surface of the conductive protrusion 310 facing away from the substrate 100 and the surface of the conductive portion 300 facing the substrate 100, or the thickness of the conductive portion 300 can be the distance between the bottom wall surface of the drainage groove 320 and the surface of the conductive portion 300 facing the substrate 100. When the conductive protrusion 310 includes the first segment 311 and the second segment 312, the thickness of the conductive portion 300 can be the distance between the surface of the first segment 311 facing away from the substrate 100 and the surface of the conductive portion 300 facing the substrate 100, or the thickness of the conductive portion 300 can be the distance between the surface of the second segment 312 facing away from the substrate 100 and the surface of the conductive portion 300 facing the substrate 100.

[0096] There are various ways to arrange the light-emitting portion 510. Optionally, as Figure 9 shown, the light-emitting portion 510 includes a hole injection layer 511, a hole transport layer 512, and a light-emitting material layer 513 that are stacked. The light-emitting material layer 513 can be a quantum dot material. Then, at least one of the hole injection layer 511 and the hole transport layer 512 can be used to set relevant inks on the substrate by processes such as inkjet printing and coating. In the display panel 10 provided in the embodiments of the present application, due to the presence of the conductive portion 300, when preparing the hole injection layer 511 and / or the hole transport layer 512, it is possible to improve the case where the ink overflows onto the conductive portion 300 and affects the electrical connection between the first electrode 600 and the first power signal line 210. Optionally, the light-emitting portion 510 can further include an electron transport layer 514, and the first electrode 600 is disposed on the side of the electron transport layer 514 facing away from the substrate 100.

[0097] The embodiments of the second aspect of the present application further provide a display device, including the display panel 10 of any of the above first aspect embodiments. Since the display device provided in the embodiments of the second aspect of the present application includes the display panel 10 of any of the above first aspect embodiments, the display device provided in the embodiments of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above first aspect embodiments, which will not be elaborated here.

[0098] The display devices in the embodiments of the present application include, but are not limited to, devices with display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, etc.

[0099] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, include: substrate; a signal line layer, located on one side of the substrate and comprising a first power signal line; a conductive portion, located on a side of the signal line layer facing away from the substrate, the conductive portion being connected to the first power signal line; a pixel definition layer, disposed on a side of the signal line layer facing away from the substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening opened in the pixel defining portion; a light-emitting layer comprising a light-emitting portion, at least a portion of which is located within the pixel opening, a clearance opening being provided on the light-emitting portion, and an orthographic projection of the orthographic projection of the conductive portion on the substrate at least partially overlapping; The first electrode is arranged on a side of the light emitting layer away from the substrate and is connected to the conductive portion via the opening.

2. The display panel according to claim 1, wherein A plurality of conductive protrusions are provided on the surface of the conductive portion facing away from the substrate, and two adjacent conductive protrusions are spaced apart to form a hydrophobic groove; Preferably, the conductive protrusion is formed by extending along a first direction, and a plurality of the conductive protrusions are distributed at intervals along a second direction, and the first direction and the second direction intersect.

3. The display panel according to claim 2, wherein At least one of the conductive protrusions includes a first segment and a second segment distributed in a direction away from the substrate, wherein an orthographic projection of the second segment on the substrate is located within an orthographic projection of the first segment on the substrate; Preferably, the width of the first segment is greater than the width of the second segment, and the length of the first segment is equal to the length of the second segment; Preferably, the width of the second segment is 10 nm to 1 μm; Preferably, the width of the first segment is greater than or equal to 1 μm.

4. The display panel according to claim 2, wherein The conductive protrusions are arranged with equal cross-sections in a direction away from the substrate; Preferably, the width of the conductive protrusion is 10 nm to 1 μm.

5. The display panel according to claim 1, characterized in that, The conductive portion includes a first surface facing away from the substrate, the pixel defining portion includes a second surface facing away from the substrate, and the first surface is located on a side of the second surface facing away from the substrate.

6. The display panel according to claim 5, wherein The pixel defining portion includes a connecting hole, the display panel includes a conductive filling portion, at least part of the conductive filling portion is located in the connecting hole and is connected to the first power signal line, and the conductive portion and the conductive filling portion are connected so that the conductive portion is connected to the first power signal line via the conductive filling portion.

7. The display panel according to claim 6, wherein The conductive filling portion is located in the communicating hole, and the conductive portion is located on a side of the conductive filling portion facing away from the substrate; Preferably, the conductive filling portion includes a third surface facing away from the substrate, the third surface is located on a side of the second surface facing away from the substrate, or the third surface and the second surface are coplanar.

8. The display panel according to claim 6, wherein The conductive filling portion includes a first portion and a second portion connected to each other, the first portion is located in the communication hole and connected to the first power signal line, the second portion is located on a side of the pixel defining portion away from the substrate, and the conductive portion and the second portion are connected to each other; Preferably, the conductive portion is located on a side of the second portion away from the pixel defining portion, or the conductive portion is connected to a peripheral side of the second portion.

9. The display panel according to claim 1, wherein, The conductive part includes a conductive material. Preferably, the material of the conductive part includes at least one of a metal material and a metal oxide material; and / or, the thickness of the conductive part is 10 nm to 1 μm; and / or, the material of the light-emitting part includes a quantum dot material.

10. A display device, characterized in that, A display panel according to any one of claims 1-9 is included.

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