Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, a first conductive part, a first insulating layer and a first electrode, the first conductive part is arranged on one side of the substrate; the first insulating layer is arranged on one side of the substrate and at least partially covers the first conductive part, and the first insulating layer is provided with a first via hole; the first electrode is arranged on the side, away from the substrate, of the first insulating layer, and the first electrode is electrically connected with the first conductive part through the first via hole; wherein the first orthographic projection of the first via hole on the substrate comprises a first boundary, the first boundary is located in the orthographic projection of the first electrode on the substrate, the first boundary is located in the second orthographic projection of the first conductive part on the substrate, and the boundary of the first boundary and the boundary of the second orthographic projection are arranged at an interval. The reliability and the use performance of the display panel are improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the reliability of current OLED display products needs to be improved. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device, aiming to improve the reliability of OLED display products.

[0005] A first aspect of the present application provides a display panel, which includes a substrate, a first conductive portion, a first insulating layer and a first electrode; the first conductive portion is arranged on one side of the substrate; the first insulating layer is arranged on one side of the substrate and at least partially covers the first conductive portion, and the first insulating layer is provided with a first via hole; the first electrode is arranged on a side of the first insulating layer away from the substrate, and the first electrode is electrically connected to the first conductive portion via the first via hole; wherein the first via hole includes a first boundary in a first orthographic projection of the substrate, the first boundary is located within the orthographic projection of the first electrode on the substrate, the first boundary is located within the second orthographic projection of the first conductive portion on the substrate, and the first boundary is spaced apart from the boundary of the second orthographic projection.

[0006] According to an implementation of the first aspect of the present application, the minimum distance between the first boundary and the boundary of the second orthographic projection is m, where m satisfies: m≥0.2 μm.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, m satisfies: m≥1.65μm.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, m satisfies: m≥1.85μm.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes an isolation structure, which is arranged on the side of the first electrode facing away from the substrate and encloses an isolation opening, and the third orthographic projection of the isolation opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the third orthographic projection is spaced apart from the first orthographic projection, and the first boundary is located on a side of the first orthographic projection close to the third orthographic projection.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first sublayer and a second sublayer located on a side of the first sublayer facing away from the substrate, and the second sublayer protrudes from the first sublayer toward the isolation opening.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure further includes a third sublayer located on the side of the first sublayer facing the substrate, and the third sublayer protrudes from the first sublayer toward the isolation opening.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the first sublayer includes a conductive material, and / or the third sublayer includes a conductive material.

[0014] According to any of the aforementioned implementations of the first aspect of the present application, the first orthographic projection is located within the second orthographic projection, and the boundary of the first orthographic projection is spaced apart from the boundary of the second orthographic projection.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the minimum distance between the boundary of the first orthographic projection and the boundary of the second orthographic projection is n, where n satisfies: n≥0.2 μm.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, n satisfies: n≥1.65μm.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, n satisfies: n≥1.85μm.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the first conductive portion includes a overlapping portion and a routing portion connected to each other, the first electrode is electrically connected to the overlapping portion via a first via, and the first orthographic projection is located within the orthographic projection of the overlapping portion on the substrate.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the overlapping portion on the substrate includes a second boundary close to the orthographic projection of the routing portion on the substrate, a fourth boundary opposite to the second boundary, and a third boundary connected between the second boundary and the fourth boundary, and the first boundary is arranged parallel to the third boundary.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the minimum distances between the second boundary, the third boundary, and the fourth boundary and the boundary of the first orthographic projection are equal.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, along a direction perpendicular to the extension direction of the routing portion, the width of the routing portion is equal to the width of the overlapping portion; or, the width of the routing portion is smaller than the width of the overlapping portion.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the first orthographic projection also includes a fifth boundary arranged opposite to the first boundary, and the fifth boundary is located outside the orthographic projection of the first electrode on the substrate, or the fifth boundary is located inside the orthographic projection of the first electrode on the substrate.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the first orthographic projection is located within the orthographic projection of the first electrode on the substrate.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of a side of the first via hole close to the first conductive portion on the substrate forms a first orthographic projection.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the opening area of ​​the first via hole gradually decreases along a direction approaching the substrate.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the side of the first conductive portion facing away from the substrate on the substrate forms a second orthographic projection.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the first conductive portion includes a first sub-film layer and a second sub-film layer stacked in sequence in a direction away from the substrate, and the orthographic projection of the second sub-film layer on the substrate is located within the orthographic projection of the first sub-film layer on the substrate.

[0028] According to any of the aforementioned embodiments of the first aspect of the present application, the first conductive portion also includes a third sub-film layer, which is located on the side of the first sub-film layer close to the substrate, and the orthographic projection of the first sub-film layer on the substrate is located within the orthographic projection of the third sub-film layer on the substrate.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a pixel definition layer and a light-emitting unit, the pixel definition layer is arranged on the side of the first electrode away from the substrate and encloses a pixel opening, and the pixel opening is connected to the isolation opening; the light-emitting unit is at least partially located in the pixel opening, and the light-emitting unit is electrically connected to the first electrode.

[0030] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure is located on a side of the pixel definition layer facing away from the substrate.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the pixel definition layer includes an inorganic insulating material, and / or the material of the first insulating layer includes an organic insulating material.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the thickness of the pixel definition layer is less than the thickness of the first insulating layer.

[0033] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a second electrode, and the second electrode is arranged on a side of the light-emitting unit facing away from the substrate.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the isolation structure includes a conductive material, and the second electrode is electrically connected to the isolation structure.

[0035] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a first encapsulation layer, and the first encapsulation layer is arranged on a side of the second electrode facing away from the substrate.

[0036] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a second encapsulation layer, and the second encapsulation layer is disposed on a side of the first encapsulation layer facing away from the substrate.

[0037] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

[0038] The first aspect embodiment of the present application also provides a display panel, including a substrate, a first conductive part, a first insulating layer, a first electrode and a pixel definition layer; the first conductive part is arranged on one side of the substrate; the first insulating layer is arranged on one side of the substrate and covers the first conductive part, the first insulating layer is provided with a first via hole, and the first via hole exposes part of the first conductive part; the first electrode is arranged on the side of the first insulating layer away from the substrate, and the first electrode is electrically connected to the first conductive part via the first via hole; the pixel definition layer is arranged on the side of the first electrode away from the substrate and encloses a pixel opening, and the orthographic projection of the pixel opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate; wherein the first orthographic projection of the first via hole on the substrate includes a first boundary, the first boundary is located within the orthographic projection of the first electrode on the substrate, the first boundary is located within the second orthographic projection of the first conductive part on the substrate, and the first boundary and the boundary of the second orthographic projection are arranged at intervals.

[0039] According to an implementation of the first aspect of the present application, the minimum distance between the first boundary and the boundary of the second orthographic projection is m, where m satisfies: m≥0.2 μm.

[0040] According to any of the aforementioned embodiments of the first aspect of the present application, m satisfies: m≥1.65μm.

[0041] According to any of the aforementioned embodiments of the first aspect of the present application, m satisfies: m≥1.85μm.

[0042] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth orthographic projection of the pixel opening on the substrate is spaced apart from the first orthographic projection, and the first boundary is located on a side of the first orthographic projection close to the fourth orthographic projection.

[0043] According to any of the aforementioned implementations of the first aspect of the present application, the first orthographic projection is located within the second orthographic projection, and the boundary of the first orthographic projection is spaced apart from the boundary of the second orthographic projection.

[0044] According to any of the aforementioned embodiments of the first aspect of the present application, the minimum distance between the boundary of the first orthographic projection and the boundary of the second orthographic projection is n, where n satisfies: n≥0.2 μm.

[0045] According to any of the aforementioned implementations of the first aspect of the present application, n satisfies: n≥1.65μn.

[0046] According to any of the aforementioned embodiments of the first aspect of the present application, n satisfies: n≥1.85μm.

[0047] According to any of the aforementioned embodiments of the first aspect of the present application, the first conductive portion includes a overlapping portion and a routing portion connected to each other, the first electrode is electrically connected to the overlapping portion via a first via, and the first orthographic projection is located within the orthographic projection of the overlapping portion on the substrate.

[0048] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the overlapping portion on the substrate includes a second boundary close to the orthographic projection of the routing portion on the substrate, a fourth boundary opposite to the second boundary, and a third boundary connected between the second boundary and the fourth boundary, and the first boundary is arranged parallel to the third boundary.

[0049] According to any of the aforementioned embodiments of the first aspect of the present application, the minimum distances between the second boundary, the third boundary, and the fourth boundary and the boundary of the first orthographic projection are equal.

[0050] According to any of the aforementioned embodiments of the first aspect of the present application, along a direction perpendicular to the extension direction of the routing portion, the width of the routing portion is equal to the width of the overlapping portion; or, the width of the routing portion is smaller than the width of the overlapping portion.

[0051] According to any of the aforementioned embodiments of the first aspect of the present application, the first orthographic projection also includes a fifth boundary arranged opposite to the first boundary, and the fifth boundary is located outside the orthographic projection of the first electrode on the substrate, or the fifth boundary is located inside the orthographic projection of the first electrode on the substrate.

[0052] According to any of the aforementioned embodiments of the first aspect of the present application, the first orthographic projection is located within the orthographic projection of the first electrode on the substrate.

[0053] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a light-emitting unit and a second electrode, the light-emitting unit is at least partially located in the pixel opening, and the light-emitting unit is electrically connected to the first electrode; the second electrode is arranged on a side of the light-emitting unit away from the substrate.

[0054] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first insulating layer includes an organic insulating material.

[0055] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the pixel definition layer includes an inorganic insulating material.

[0056] An embodiment of a second aspect of the present application provides a display device, which includes a display panel provided by any one of the implementations of the first aspect above.

[0057] According to the display panel of the embodiment of the present application, the display panel includes a substrate, a first conductive part, a first insulating layer and a first electrode, the first boundary is located in both the orthographic projection and the second orthographic projection of the first electrode on the substrate, and the first boundary and the boundary of the second orthographic projection are arranged at intervals, which can reduce the stress on the position of the first insulating layer corresponding to the first boundary and reduce the risk of cracks in the first insulating layer. The first electrode overlaps with the first conductive part along the side wall surface of the first via hole, which can reduce the risk of the first electrode breaking due to the step difference, and the first electrode located above the first boundary also reduces the risk of breaking due to cracks in the first insulating layer, thereby improving the reliability and performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Other features, objects and advantages of the present application will become more apparent by reading 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 and the accompanying drawings are not drawn to scale.

[0059] Figure 1 is a schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0060] Figure 2 The embodiment of this application provides Figure 1 One of the cross-sectional views at AA in the middle;

[0061] Figure 3 The embodiment of this application provides Figure 1 The second section view at AA in the middle;

[0062] Figure 4 It is one of the structural schematic diagrams of a first orthographic projection, a second orthographic projection and a third orthographic projection in a display panel provided in an embodiment of the present application;

[0063] Figure 5 This is the second structural schematic diagram of a first orthographic projection, a second orthographic projection and a third orthographic projection in a display panel provided in an embodiment of the present application;

[0064] Figure 6 The embodiment of this application provides Figure 1 Sectional view 3 at AA in the middle;

[0065] Figure 7 It is a schematic diagram of the cross-sectional structure of a display panel provided in an embodiment of the present application.

[0066] Description of reference numerals:

[0067] 1. substrate; 11. first conductive portion; 110. second orthographic projection; 111. overlapping portion; 1111. second boundary; 1112. third boundary; 1113. fourth boundary; 112. routing portion; 101. first sub-film layer; 102. second sub-film layer; 103. third sub-film layer; 12. first insulating layer; 13. first via hole; 130. first orthographic projection; 131. first boundary; 132. fifth boundary;

[0068] 2. Pixel definition layer; 20. Pixel opening;

[0069] 3. Isolation structure; 30. Isolation opening; 300. Third orthographic projection; 31. First sublayer; 32. Second sublayer; 33. Third sublayer;

[0070] 4. Light-emitting device; 40. Light-emitting unit; 41. First electrode; 42. Second electrode;

[0071] 5. First packaging layer; 50. Packaging part; 6. Second packaging layer; 7. Third packaging layer. DETAILED DESCRIPTION

[0072] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0074] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0075] Embodiments of the present application provide a display panel and a display device. Embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0076] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0077] Please also read Figures 1 to 4 In a first aspect, an embodiment of the present application provides a display panel, which includes a substrate 1, a first conductive portion 11, a first insulating layer 12 and a first electrode 41; the first conductive portion 11 is arranged on one side of the substrate 1; the first insulating layer 12 is arranged on one side of the substrate 1 and at least partially covers the first conductive portion 11, and the first insulating layer 12 is provided with a first via 13; the first electrode 41 is arranged on a side of the first insulating layer 12 away from the substrate 1, and the first electrode 41 is electrically connected to the first conductive portion 11 via the first via 13; wherein the first via 13 includes a first boundary 131 on a first orthographic projection 130 of the substrate 1, the first boundary 131 is located within the orthographic projection of the first electrode 41 on the substrate 1, the first boundary 131 is located within the second orthographic projection 110 of the first conductive portion 11 on the substrate 1, and the first boundary 131 is spaced apart from the boundary of the second orthographic projection 110.

[0078] Optionally, the orthographic projection direction of a structure in the present application on the substrate 1 can refer to Figure 2 The Z-axis direction in the figure, and the direction indicated by the Z-axis can also be the thickness direction of the display panel.

[0079] Optionally, the orthographic projection of structures such as “openings” and “vias” on the substrate 1 in the present application can be understood as: the area enclosed by the orthographic projection of the structure that encloses the “opening” or “via” on the substrate 1 .

[0080] Optionally, the first electrode 41 can be used as a power supply electrode of the light-emitting device 4, and the first conductive part 11 can be used as a data signal line. The first electrode 41 and the first conductive part 11 are located in different layers, and the first electrode 41 is electrically connected to the first conductive part 11 via the first via 13, thereby realizing signal transmission.

[0081] Since the first insulating layer 12 is provided with a first via hole 13 to expose the first conductive part 11 so as to facilitate the overlap of the first electrode 41 with the first conductive part 11, if the first boundary 131 coincides with the boundary of the second orthographic projection 110, under the stress of the film layer, cracks may appear in the first insulating layer 12, and then the first electrode 41 is formed along the first via hole 13, and the first electrode 41 covers the crack, which may cause the first electrode 41 to also break, and the signal cannot be effectively transmitted from the first conductive part 11 to the light-emitting device 4, resulting in dark spots and affecting the reliability of the display panel. If the cracks in the first insulating layer 12 are small, they may gradually increase during the subsequent reliability test process, thereby causing the first electrode 41 to be disconnected, resulting in dark spots on the display panel after the reliability test.

[0082] In a display panel provided in an embodiment of the present application, the display panel includes a substrate 1, a first conductive portion 11, a first insulating layer 12, and a first electrode 41. The first boundary 131 is located within both the orthographic projection 110 of the first electrode 41 on the substrate 1, and the first boundary 131 is spaced from the boundary of the second orthographic projection 110, which can reduce the stress on the first insulating layer 12 at a position corresponding to the first boundary 131, and reduce the risk of cracks in the first insulating layer 12. The first electrode 41 overlaps the first conductive portion 11 along the side wall surface of the first via 13, which can reduce the risk of fracture of the first electrode 41 caused by the step difference, and the first electrode 41 located above the first boundary 131 also reduces the risk of fracture caused by cracks in the first insulating layer 12, thereby improving the reliability and performance of the display panel.

[0083] Optionally, the minimum distance between the first boundary 131 and the boundary of the second orthographic projection 110 is m, where m satisfies: m≥0.2 μm.

[0084] When designing the layout, the size deviation of the first via 13, the size deviation of the first conductive part 11, and the alignment deviation between the center point of the first via 13 and the center point of the first conductive part 11 are comprehensively considered. There may also be fluctuations in other processes that cause the first boundary 131 to be extremely close to the boundary of the second orthographic projection 110, or even overlap or exceed it. The fluctuation influence distance is increased by 0.2μm, so that even in the case of extreme deviation, but without fluctuation influence, the minimum distance between the first boundary 131 and the boundary of the second orthographic projection 110 is still greater than or equal to 0.2μm, thereby further reducing the risk of cracks in the first insulating layer 12 and the breakage of the first electrode 41, and improving the reliability of the display panel. That is, in the case of extreme deviation, when the influence caused by fluctuations in other processes is 0, in the molded product, m≥0.2μm; if there are fluctuations in other processes, m may be less than 0.2μm, but greater than 0, which also reduces the risk of the first electrode 41 breaking.

[0085] Optionally, m satisfies: m≥1.65μm.

[0086] For example, during layout design, the size deviation a1 of the first conductive portion 11 is ±0.7 μm, so that the size deviation a2 of the boundary of the second orthographic projection 110 is ±0.7 μm, the size deviation b1 of the first via 13 is ±0.8 μm, so that the size deviation b2 of the first boundary 131 is ±0.8 μm, the alignment deviation c1 of the center point of the first via 13 and the preset point is ±0.8 μm, and the alignment deviation c2 of the center point of the first conductive portion 11 and the preset point is ±0.8 μm. The limit tolerance design calculation formula is as follows:

[0087] D1=(a2*a2+b2*b2+c1+c2) 1 / 2

[0088] It can be calculated that D1 = (0.7*0.7+0.8*0.8+0.8+0.8) 1 / 2 μm≈1.65μm.

[0089] In these embodiments, when the deviation impact value is 0 and the influence of process fluctuations is not considered, in the molded product, m≥1.65μm; when the deviation is taken into account, the limit deviation of the molded product from the preset layout is approximately 1.65μm, and the layout design standard of m≥1.65μm can also reduce the situation where the first boundary 131 is extremely close to the boundary of the second orthographic projection 110 or even overlaps or exceeds it, thereby reducing the risk of cracks in the first insulating layer 12 and breakage of the first electrode 41, and improving the reliability of the display panel.

[0090] Optionally, m satisfies: m≥1.85μm.

[0091] In these embodiments, the extreme deviation and the influence of process fluctuations are comprehensively considered. When the deviation influence value is 0 and the process fluctuation influence value is 0, in the molded product, m≥1.85μm; when the deviation is taken into account, the extreme deviation of the molded product from the preset layout is approximately 1.65μm, and the process fluctuation influence value is 0.2μm. The layout design standard of m≥1.85μm can also reduce the situation where the first boundary 131 is extremely close to the boundary of the second orthographic projection 110 or even overlaps or exceeds it, thereby further reducing the risk of cracks in the first insulating layer 12 and breakage of the first electrode 41, thereby improving the reliability of the display panel.

[0092] Exemplarily, m=1.85 μm, which can effectively reduce the risk of the first electrode 41 being broken and can prevent the area of ​​the first orthographic projection 130 from being too compressed, thereby improving the effect of the first electrode 41 and the first conductive portion 11 .

[0093] In some optional embodiments, the display panel also includes an isolation structure 3, which is arranged on the side of the first electrode 41 facing away from the substrate 1 and encloses an isolation opening 30, and a third orthographic projection 300 of the isolation opening 30 on the substrate 1 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 1, so that the subsequently prepared light-emitting unit 40 overlaps with the first electrode 41.

[0094] Optional, see Figure 1 The isolation structure 3 may be in a grid shape, and the isolation structure 3 encloses an isolation opening 30, which can be used to define the light-emitting area of ​​the display panel, so that the isolation structure 3 can divide the sub-pixels in the display panel.

[0095] Optionally, the display panel further includes a light-emitting functional layer, the light-emitting functional layer includes a plurality of light-emitting units 40, and the light-emitting units 40 are used to realize the light-emitting display of the display panel. Optionally, an array layer may be included between the substrate 1 and the light-emitting functional layer, the array layer may include a pixel circuit, and the pixel circuit is electrically connected to the first electrode 41. Exemplarily, the pixel circuit provided in the array layer includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source and a drain. The storage capacitor includes a first plate and a second plate.

[0096] The light-emitting unit 40 may include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer, an emitting layer (EML), a hole blocking layer, an electron injection layer (EIL) and an electron transport layer (ETL).

[0097] The isolation structure 3 is disposed on one side of the substrate 1 and encloses a plurality of isolation openings 30, which can be used to accommodate at least part of the light-emitting unit 40. The isolation structure 3 can be used to divide the sub-pixels of the display panel. The isolation structure 3 is disposed on the substrate 1 and encloses a plurality of isolation openings 30, which can separate the light-emitting functional layer to form mutually disconnected light-emitting units 40, thereby reducing the crosstalk of carriers in the light-emitting functional layer and improving the display effect of the display panel. In addition, the light-emitting unit 40 does not need to use a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost.

[0098] The composition, preparation, etc. of the isolation structure 3 (or partition structure or isolation column) are described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099 072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, CN117500332A for reference.

[0099] In some optional embodiments, the display panel also includes a pixel definition layer 2, which is arranged on the side of the first electrode 41 away from the substrate 1 and encloses a plurality of pixel openings 20, and the pixel openings 20 are connected to the isolation openings 30; the light-emitting unit 40 is at least partially located in the pixel opening 20, and the light-emitting unit 40 is electrically connected to the first electrode 41.

[0100] In these embodiments, when the light-emitting functional layer is prepared through the isolation opening 30, the light-emitting unit 40 separated by the isolation structure 3 falls into the pixel opening 20 and overlaps with the first electrode 41 exposed by the pixel opening 20. Part of the light-emitting unit 40 may also extend from the pixel opening 20 to the isolation opening 30 connected thereto.

[0101] Optionally, there are multiple ways to set the relative position relationship between the isolation structure 3 and the pixel definition layer 2. For example, the isolation structure 3 can be set on the side of the pixel definition layer 2 facing away from the substrate 1, or a clearance opening is provided on the pixel definition layer 2, and the isolation structure 3 can be located in the clearance opening. The embodiment of the present application is described by taking the isolation structure 3 being located on the side of the pixel definition layer 2 facing away from the substrate 1 as an example.

[0102] Optionally, the material of the pixel definition layer 2 includes an inorganic insulating material. Inorganic materials have good compactness and water vapor resistance, and the thickness of the preparation can be thin. Exemplarily, the material of the pixel definition layer 2 includes oxygen silicon compounds and / or nitrogen silicon compounds, such as silicon oxide, silicon nitride, etc.

[0103] Optionally, the material of the first insulating layer 12 includes an organic insulating material. The organic material has good fluidity, so that the surface of the first insulating layer 12 facing away from the substrate 1 is relatively flat to facilitate the preparation of the film layer thereon. Exemplarily, the organic material may include one or more of an optical glue, a photoresist, and a negative organic glue.

[0104] Optionally, the thickness of the pixel definition layer 2 is smaller than the thickness of the first insulating layer 12 .

[0105] Combined with reference Figures 4 to 6 In some optional embodiments, the third orthographic projection 300 is spaced apart from the first orthographic projection 130 , and the first boundary 131 is located on a side of the first orthographic projection 130 close to the third orthographic projection 300 .

[0106] In these embodiments, the third orthographic projection 300 is spaced apart from the first orthographic projection 130 to reduce the influence of the depression of the first via hole 13 on the light-emitting unit 40 prepared at the isolation opening 30, so that the light-emitting unit 40 can avoid the position of the first via hole 13, and the whole can be relatively flat with good light-emitting effect. One end of the first electrode 41 extends from the isolation opening 30 toward the first via hole 13, and first covers the position in the first via hole 13 corresponding to the first boundary 131.

[0107] In some optional embodiments, the isolation structure 3 includes a first sublayer 31 and a second sublayer 32 located on a side of the first sublayer 31 facing away from the substrate 1 , and the second sublayer 32 protrudes from the first sublayer 31 toward the isolation opening 30 .

[0108] In these optional embodiments, the first sublayer 31 and the second sublayer 32 are stacked in sequence to form the isolation structure 3. The side of the first sublayer 31 disposed close to the substrate 1, which is away from the substrate 1, is located within the orthographic projection of the second sublayer 32 on the substrate 1. The second sublayer 32 covers the surface of the first sublayer 31 away from the substrate 1. At this time, the first sublayer 31 is recessed relative to the second sublayer 32 in the direction away from the isolation opening 30. When preparing the light-emitting functional layer, the light-emitting functional layer has a large drop at the edge of the isolation opening 30, and the first sublayer 31 is recessed relative to the second sublayer 32. The light-emitting functional layer is difficult to connect at the edge of the isolation opening 30, and thus breaks. The light-emitting functional layer breaks to form mutually disconnected light-emitting units 40.

[0109] Optionally, the display panel further includes a second electrode 42 located on the side of the light-emitting unit 40 facing away from the substrate 1. One of the first electrode 41 and the second electrode 42 can be used as an anode, and the other can be used as a cathode to drive the light-emitting unit 40 to emit light. In the embodiment of the present application, the first electrode 41 is used as the anode of the display panel, and the second electrode 42 is used as the cathode of the display panel for example.

[0110] Optionally, the orthographic projection of the first electrode 41 on the substrate 1 at least partially overlaps the orthographic projection of the isolation opening 30 on the substrate 1. By preparing the light-emitting unit 40 and the second electrode 42 in the isolation opening 30, the light-emitting unit 40 can be driven to emit light by the first electrode 41 and the second electrode 42.

[0111] In some optional embodiments, the material of the isolation structure 3 includes a conductive material, and the second electrode 42 is electrically connected to the isolation structure 3. The isolation structure 3 separates the second electrode 42 layer to form mutually spaced second electrodes 42, and the mutually spaced second electrodes 42 are electrically connected through the isolation structure 3 to form a whole-surface electrode, thereby ensuring normal light emission of the light-emitting unit 40.

[0112] Optionally, the material of the first sublayer 31 may include a conductive material, and the second electrode 42 may be connected to the first sublayer 31 , so that the second electrodes 42 of adjacent sub-pixels may be electrically connected through the first sublayer 31 .

[0113] Optionally, when vapor-depositing the light-emitting functional layer and the second electrode 42 layer of the display panel, the second sublayer 32 is capable of shielding at least part of the material used to prepare the light-emitting functional layer and the second electrode 42 layer, so as to separate the light-emitting functional layer and the second electrode 42 layer between adjacent sub-pixels, and facilitate the formation of a plurality of light-emitting units 40 that are spaced apart and located within the isolation opening 30, and facilitate the formation of a plurality of second electrodes 42 that are spaced apart and located within the isolation opening 30, so that when vapor-depositing the light-emitting functional layer and the second electrode 42 layer of the display panel, there is no need to set a mask with high precision, for example, when vapor-depositing the light-emitting functional layer and the second electrode 42 layer, there is no need to set a high-precision metal mask (Fine Metal Mask, FMM), thereby effectively reducing the production and preparation cost of the display panel.

[0114] In some optional embodiments, the isolation structure 3 further includes a third sublayer 33 located on the side of the first sublayer 31 facing the substrate 1, and the third sublayer 33 is arranged to protrude from the first sublayer 31 toward the isolation opening 30. Optionally, the material of the third sublayer 33 may include a conductive material, and the second electrode 42 may be connected to the third sublayer 33, so that the second electrodes 42 of adjacent sub-pixels can be electrically connected through the third sublayer 33. By setting the third sublayer 33 to protrude from the first sublayer 31 toward the isolation opening 30, the third sublayer 33 may have a larger size to facilitate connection with the second electrode 42. The film thickness of the third sublayer 33 may be less than the film thickness of the first sublayer 31.

[0115] Optionally, the second sublayer 32 is made of titanium (Ti) or molybdenum (Mo), the first sublayer 31 is made of aluminum (Al), silver (Ag) or copper (Cu), and the third sublayer 33 is made of titanium (Ti) or molybdenum (Mo). For example, the isolation structure 3 is a three-layer metal composite material of Ti / Al / Ti (titanium / aluminum / titanium) or Ti / Al / Mo (titanium / aluminum / molybdenum). For example, the cross section of the isolation structure 3 perpendicular to the substrate 1 is in an I-shape.

[0116] Reference Figure 4In some optional embodiments, the first orthographic projection 130 is located within the second orthographic projection 110 , and a boundary of the first orthographic projection 130 is spaced apart from a boundary of the second orthographic projection 110 .

[0117] In these embodiments, except for the first boundary 131, the other boundaries of the first orthographic projection 130 are also located within the second orthographic projection 110, which facilitates the overlap of the first electrode 41 and the first conductive portion 11, and can simplify the alignment of the center point of the first via 13 and the center point of the first conductive portion 11, that is, the center point of the first via 13 and the center point of the first conductive portion 11 can be directly set to coincide.

[0118] Optionally, the minimum distance between the boundary of the first orthographic projection 130 and the boundary of the second orthographic projection 110 is n, where n satisfies: n≥0.2μm. In the layout design, the size deviation of the first via 13, the size deviation of the first conductive part 11, and the alignment deviation between the center point of the first via 13 and the center point of the first conductive part 11 are comprehensively considered. There may also be other process fluctuations that cause the first boundary 131 to be extremely close to the boundary of the second orthographic projection 110 or even overlap or exceed it. The fluctuation influence distance is increased by 0.2μm, so that even in the case of extreme deviation, but without fluctuation influence, the minimum distance between the boundary of the first orthographic projection 130 in all directions and the boundary of the second orthographic projection 110 is still greater than or equal to 0.2μm, so that in addition to the area corresponding to the first boundary 131, other positions of the first insulating layer 12 also cover the boundary of the surface of the side of the first conductive part 11 facing away from the substrate 1, thereby reducing the risk of cracks in all directions of the first via 13 and anode fracture, thereby improving the reliability of the display panel.

[0119] In these embodiments, under extreme deviation conditions, when the impact of fluctuations in other processes is 0, in the molded product, n≥0.2μm; if there are still fluctuations in other processes, n may be less than 0.2μm, but greater than 0. This design also reduces the risk of breakage of the first electrode 41.

[0120] Optionally, n satisfies: n≥1.65μm.

[0121] For example, during layout design, the dimension deviation a1 of the first conductive portion 11 is ±0.7 μm, so that the dimension deviation a2 of the boundary of the second orthographic projection 110 is ±0.7 μm, the dimension deviation b1 of the first via 13 is ±0.8 μm, so that the dimension deviation b3 of the boundary of the first orthographic projection 130 is ±0.8 μm, the alignment deviation c1 of the center point of the first via 13 and the preset point is ±0.8 μm, and the alignment deviation c2 of the center point of the first conductive portion 11 and the preset point is ±0.8 μm. The limit tolerance design calculation formula is as follows:

[0122] D2=(a2*a2+b3*b3+c1+c2) 1 / 2

[0123] Calculation shows that D2 = (0.7*0.7+0.8*0.8+0.8+0.8) 1 / 2 μm≈1.65μm.

[0124] In these embodiments, when the deviation impact value is 0 and the influence of process fluctuations is not considered, in the molded product, n≥1.65μm, that is, the minimum distance between the boundary of the first orthographic projection 130 in each direction and the boundary of the second orthographic projection 110 is still greater than or equal to 1.65μm; taking the deviation into consideration, the limit deviation of the molded product from the preset layout is approximately 1.65μm, and the layout design standard of n≥1.65μm can also reduce the situation where the boundary of the first orthographic projection 130 in any direction is extremely close to the boundary of the second orthographic projection 110 or even overlaps or exceeds it, thereby reducing the risk of cracks in the first insulating layer 12 and breakage of the first electrode 41, and improving the reliability of the display panel.

[0125] Optionally, n satisfies: n≥1.85μm.

[0126] It can be understood that the size of the first orthographic projection 130 in each direction within the plane where the substrate 1 is located is at least greater than 3.7 μm.

[0127] In these embodiments, the extreme deviation and the influence of process fluctuations are comprehensively considered. When the deviation influence value is 0 and the process fluctuation influence value is 0, in the molded product, n≥1.85μm; when the deviation is taken into account, the extreme deviation of the molded product from the preset layout is approximately 1.65μm, and the process fluctuation influence value is 0.2μm. The layout design standard of n≥1.85μm can also reduce the situation where the boundary of the first orthographic projection 130 in any direction is extremely close to the boundary of the second orthographic projection 110 or even overlaps or exceeds it, thereby further reducing the risk of cracks in the first insulating layer 12 and breakage of the first electrode 41, and improving the reliability of the display panel.

[0128] Exemplarily, n=1.85 μm, which can effectively reduce the risk of the first electrode 41 being broken, and can prevent the area of ​​the first orthographic projection 130 from being too compressed, thereby improving the effect of the first electrode 41 and the first conductive portion 11 .

[0129] Reference Figure 4 and Figure 5In some optional embodiments, the first conductive portion 11 includes a lap portion 111 and a routing portion 112 connected to each other, the first electrode 41 is electrically connected to the lap portion 111 via the first via 13, and the first orthographic projection 130 is located within the orthographic projection of the lap portion 111 on the substrate 1. The first conductive portion 11 can be used as a data signal line, the lap portion 111 is used to overlap with the first electrode 41, and the routing portion 112 extends outward from the lap portion 111. The first orthographic projection 130 is located in the orthographic projection of the lap portion 111 on the substrate 1, which can improve the lap effect of the first electrode 41.

[0130] Optionally, the orthographic projection of the overlap portion 111 on the substrate 1 includes a second boundary 1111 close to the orthographic projection of the wiring portion 112 on the substrate 1, a fourth boundary 1113 opposite to the second boundary 1111, and a third boundary 1112 connected between the second boundary 1111 and the fourth boundary 1113, and the first boundary 131 is arranged in parallel with the third boundary 1112. In these embodiments, the number of the third boundaries 1112 can be two oppositely arranged ones, and the orthographic projection of the wiring portion 112 on the substrate 1 extends outward from the second boundary 1111, so that the wiring portion 112 can avoid the orthographic projection of the pixel opening 20 and the isolation opening 30 on the substrate 1, thereby reducing the influence of the wiring portion 112 on the light-emitting effect of the light-emitting unit 40; the first boundary 131 is arranged in parallel with the third boundary 1112, so as to increase the opening area of ​​the first via 13.

[0131] Optionally, the minimum distances between the second boundary 1111, the third boundary 1112 and the fourth boundary 1113 and the boundary of the first orthographic projection 130 are equal, for example, all are n. The minimum distances between the second boundary 1111, the third boundary 1112 and the fourth boundary 1113 located at different orientations of the first orthographic projection 130 and the first orthographic projection 130 are equal, so that the positional relationship between the orthographic projection of the overlapping portion 111 on the substrate 1 and the first orthographic projection 130 is consistent with the layout design, reducing the size deviation of the first via 13, the size deviation of the first conductive portion 11, the alignment deviation between the center point of the first via 13 and the center point of the first conductive portion 11, and the influence of process fluctuations.

[0132] In some optional embodiments, such as Figure 4 As shown, along the direction perpendicular to the extension direction of the routing portion 112, the width of the routing portion 112 is equal to the width of the overlapping portion 111. If the layout space allows, this implementation can be used for routing, and the process is relatively simple. Figure 5 As shown, along the direction perpendicular to the extension direction of the routing portion 112, the width of the routing portion 112 is smaller than the width of the overlapping portion 111. If the structure within the display panel is relatively compact, the size relationship between the overlapping portion 111 and the first via 13 remains unchanged to ensure the overlapping effect, and the width of the routing portion 112 can be reduced, thereby improving the space utilization of the display panel.

[0133] Optionally, the first orthographic projection 130 further includes a fifth boundary 132 arranged opposite to the first boundary 131. Figure 3 and Figure 4 , the fifth boundary 132 is located outside the orthographic projection of the first electrode 41 on the substrate 1, and the first electrode 41 may not completely cover the first via hole 13, and the first electrode 41 may also overlap the first conductive portion 11. Figure 2 and Figure 4 , the fifth boundary 132 is located within the orthographic projection of the first electrode 41 on the substrate 1 , the coverage area of ​​the first electrode 41 is larger, and the overlapping effect is better.

[0134] Optionally, the first orthographic projection 130 is located within the orthographic projection of the first electrode 41 on the substrate 1. The first electrode 41 completely covers the first via hole 13, which can further increase the overlap area between the first electrode 41 and the first conductive portion 11 and reduce the impedance of signal transmission.

[0135] Optionally, the first orthographic projection 130 can be understood as the orthographic projection of the side of the first via 13 close to the first conductive portion 11 on the substrate 1, and the area enclosed and defined by the side of the first via 13 close to the first conductive portion 11 is the maximum overlapping area of ​​the first conductive portion 11 and the first electrode 41. Optionally, the opening area of ​​the first via 13 gradually decreases along the direction close to the substrate 1.

[0136] Optionally, the second orthographic projection 110 can be understood as the orthographic projection of the side of the first conductive portion 11 away from the substrate 1 on the substrate 1, the side of the first conductive portion 11 away from the substrate 1 is an effective overlap area with the first electrode 41, and the first insulating layer 12 covers the surface of the side of the first conductive portion 11 away from the substrate 1 to reduce the risk of cracks in itself. Optionally, the first conductive portion 11 includes a first sub-film layer 101 and a second sub-film layer 102 stacked in sequence in a direction away from the substrate 1, and the orthographic projection of the second sub-film layer 102 on the substrate 1 is located within the orthographic projection of the first sub-film layer 101 on the substrate 1. The activity of the material of the second sub-film layer 102 is less than the activity of the material of the first sub-film layer 101. Exemplarily, the material of the first sub-film layer 101 can be aluminum, and the material of the second sub-film layer 102 can be titanium. For example, the first sub-film layer 101 can be an aluminum layer, and the second sub-film layer 102 can be a titanium layer.

[0137] Optionally, the first conductive portion 11 further includes a third sub-film layer 103 , which is located on a side of the first sub-film layer 101 close to the substrate 1 , and an orthographic projection of the first sub-film layer 101 on the substrate 1 is located within an orthographic projection of the third sub-film layer 103 on the substrate 1 .

[0138] In these optional embodiments, the first conductive part 11 includes a titanium layer (Ti), an aluminum layer (Al), and a titanium layer (Ti) stacked along the thickness direction of the substrate 1. The multilayer composite structure of the titanium layer, the aluminum layer, and the titanium layer can improve the self-protection capability of the first conductive part 11 and enhance its conductive effect.

[0139] Combined with reference Figure 6 and Figure 7 Optionally, the display panel includes a plurality of light emitting devices 4 with different luminous colors, and the plurality of light emitting devices 4 with different luminous colors are located in different isolation openings 30. The light emitting device 4 includes a first electrode 41, a light emitting unit 40 and a second electrode 42. Exemplarily, the light emitting device 4 can have three colors, namely red, green and blue.

[0140] In some optional embodiments, the display panel further includes a first encapsulation layer 5, and the first encapsulation layer 5 may include an encapsulation portion 50 disposed on the side of the second electrode 42 away from the substrate 1. A plurality of encapsulation portions 50 are arranged at intervals, and the number of the light-emitting units 40 is multiple. The plurality of encapsulation portions 50 may be arranged one-to-one with the plurality of light-emitting units 40, and the encapsulation portions 50 corresponding to the light-emitting devices 4 of different light-emitting colors are different. Optionally, the encapsulation portion 50 is located on the side of the second electrode 42 away from the substrate 1. Optionally, the material of the first encapsulation layer 5 may include an inorganic material, which has good compactness and water vapor resistance, a thin thickness, and also has a good encapsulation effect. The first encapsulation layer 5 can be prepared by a chemical vapor deposition process (Chemical Vapor Deposition, CVD). For example, the encapsulation portion 50 extends through the isolation structure 3 toward the side wall of the isolation opening 30 to the side of the isolation structure 3 away from the substrate 1.

[0141] Optionally, the display panel further includes a second encapsulation layer 6 disposed on the side of the first encapsulation layer 5 facing away from the substrate 1. As shown in the figure, optionally, the display panel further includes a third encapsulation layer 7 disposed on the side of the second encapsulation layer 6 facing away from the substrate 1. The material of the second encapsulation layer 6 may include an organic material so that the second encapsulation layer 6 has good fluidity, so that the surface of the second encapsulation layer 6 facing away from the substrate 1 is relatively flat. The material of the third encapsulation layer 7 may include an inorganic material to further enhance the encapsulation effect of the display panel. Optionally, the second encapsulation layer 6 may be prepared by inkjet printing (IJP); the third encapsulation layer 7 may be prepared by a chemical vapor deposition process.

[0142] Optionally, the display panel further includes a touch layer, a polarizing layer and a cover plate disposed on the third encapsulation layer 7. The touch layer can be used to realize the touch operation of the display panel, the polarizing layer can be used to filter light to improve the display effect of the display panel, and the cover plate can be used to protect the underlying film layer to improve the strength of the display panel.

[0143] Please also read Figures 1 to 7 The first embodiment of the present application further provides a display panel, including a substrate 1, a first conductive portion 11, a first insulating layer 12, a first electrode 41 and a pixel definition layer 2; the first conductive portion 11 is arranged on one side of the substrate 1; the first insulating layer 12 is arranged on one side of the substrate 1 and covers the first conductive portion 11, the first insulating layer 12 is provided with a first via hole 13, and the first via hole 13 exposes a portion of the first conductive portion 11; the first electrode 41 is arranged on a side of the first insulating layer 12 away from the substrate 1, and the first electrode 41 is electrically connected to the first conductive portion 11 via the first via hole 13 ; The pixel definition layer 2 is arranged on the side of the first electrode 41 away from the substrate 1 and encloses a pixel opening 20, and the orthographic projection of the pixel opening 20 on the substrate 1 at least partially overlaps with the orthographic projection of the first electrode 41 on the substrate 1; wherein, the first orthographic projection 130 of the first via 13 on the substrate 1 includes a first boundary 131, the first boundary 131 is located within the orthographic projection of the first electrode 41 on the substrate 1, the first boundary 131 is located within the second orthographic projection 110 of the first conductive portion 11 on the substrate 1, and the first boundary 131 is spaced from the boundary of the second orthographic projection 110.

[0144] In a display panel provided in an embodiment of the present application, the display panel includes a substrate 1, a first conductive portion 11, a first insulating layer 12, a first electrode 41 and a pixel definition layer 2, and the first boundary 131 is located in both the orthographic projection 110 and the second orthographic projection 110 of the first electrode 41 on the substrate 1, and the first boundary 131 is arranged at a boundary interval with the second orthographic projection 110, which can reduce the stress on the first insulating layer 12 and the position corresponding to the first boundary 131, and reduce the risk of cracks in the first insulating layer 12. The first electrode 41 extends from the light-emitting area of ​​the pixel opening 20 to the first via hole 13, and overlaps with the first conductive portion 11 along the side wall surface of the first via hole 13, which can reduce the risk of the first electrode 41 being broken due to the step difference, and the first electrode 41 located above the first boundary 131 also reduces the risk of breaking due to cracks in the first insulating layer 12, and reduces the risk of poor light emission of the display panel due to the break of the first electrode 41, thereby improving the reliability and performance of the display panel.

[0145] Optionally, a display panel provided in an embodiment of the first aspect of the present application may be a display panel in any of the aforementioned embodiments, so a display panel provided in an embodiment of the present application may have the beneficial effects of the display panel in any of the aforementioned embodiments, and the present application will not elaborate on it. For example, the first conductive portion 11 may be the first conductive portion 11 in any of the aforementioned embodiments. For example, the first via 13 may be the first via 13 in any of the aforementioned embodiments.

[0146] This embodiment can be combined with some or all of the features of the above embodiments, which will not be described in detail here.

[0147] The embodiment of the second aspect of the present application provides a display device, which includes the display panel of any embodiment of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel provided by any embodiment of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any embodiment of the first aspect, which will not be repeated here.

[0148] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0149] According to the embodiments described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; A first conductive portion, disposed on one side of the substrate; A first insulating layer, disposed on one side of the substrate and at least partially covering the first conductive portion, wherein the first insulating layer is provided with a first via hole; a first electrode, disposed on a side of the first insulating layer away from the substrate, and the first electrode is electrically connected to the first conductive portion via the first via hole; The first via hole includes a first boundary in the first orthographic projection of the substrate, the first boundary is located within the orthographic projection of the first electrode on the substrate, the first boundary is located within the second orthographic projection of the first conductive portion on the substrate, and the first boundary is spaced apart from a boundary of the second orthographic projection.

2. The display panel according to claim 1, characterized in that: The minimum distance between the first boundary and the boundary of the second orthographic projection is m, where m satisfies: m≥0.2 μm; Preferably, m satisfies: m≥1.65 μm; Preferably, m satisfies: m≥1.85 μm.

3. The display panel according to claim 1, characterized in that: Also includes: an isolation structure, disposed on a side of the first electrode facing away from the substrate and enclosing an isolation opening, wherein a third orthographic projection of the isolation opening on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate; Preferably, the third orthographic projection is spaced apart from the first orthographic projection, and the first boundary is located on a side of the first orthographic projection close to the third orthographic projection; Preferably, the isolation structure comprises a first sublayer and a second sublayer located on a side of the first sublayer facing away from the substrate, and the second sublayer protrudes from the first sublayer toward the isolation opening; Preferably, the isolation structure further comprises a third sublayer located on a side of the first sublayer facing the substrate, and the third sublayer protrudes from the first sublayer toward the isolation opening; Preferably, the first sublayer includes a conductive material, and / or the third sublayer includes a conductive material.

4. The display panel according to claim 1, characterized in that: The first orthographic projection is located within the second orthographic projection, and a boundary of the first orthographic projection is spaced apart from a boundary of the second orthographic projection; Preferably, the minimum distance between the boundary of the first orthographic projection and the boundary of the second orthographic projection is n, where n satisfies: n≥0.2 μm; Preferably, n satisfies: n≥1.65 μm; Preferably, n satisfies: n≥1.85 μm.

5. The display panel according to claim 4, characterized in that: The first conductive portion includes a lap portion and a routing portion connected to each other, the first electrode is electrically connected to the lap portion via the first via hole, and the first orthographic projection is located within the orthographic projection of the lap portion of the substrate; Preferably, the orthographic projection of the overlapping portion on the substrate includes a second boundary close to the orthographic projection of the routing portion on the substrate, a fourth boundary opposite to the second boundary, and a third boundary connected between the second boundary and the fourth boundary, and the first boundary is arranged in parallel with the third boundary; Preferably, the minimum distances between the second boundary, the third boundary, the fourth boundary and the boundary of the first orthographic projection are equal.

6. The display panel according to claim 5, characterized in that: Along a direction perpendicular to the extending direction of the routing portion, the width of the routing portion is equal to the width of the overlapping portion; Alternatively, the width of the routing portion is smaller than the width of the overlapping portion.

7. The display panel according to claim 1, characterized in that: The first orthographic projection further includes a fifth boundary arranged opposite to the first boundary, the fifth boundary is located outside the orthographic projection of the first electrode on the substrate, or the fifth boundary is located inside the orthographic projection of the first electrode on the substrate; Preferably, the first orthographic projection is located within the orthographic projection of the first electrode on the substrate.

8. The display panel according to any one of claims 1 to 7, characterized in that: The orthographic projection of a side of the first via hole close to the first conductive portion on the substrate forms the first orthographic projection; Preferably, the opening area of ​​the first via hole gradually decreases along a direction approaching the substrate.

9. The display panel according to claim 8, characterized in that: The orthographic projection of the side of the first conductive portion facing away from the substrate on the substrate forms the second orthographic projection; Preferably, the first conductive portion comprises a first sub-film layer and a second sub-film layer which are sequentially stacked in a direction away from the substrate, and an orthographic projection of the second sub-film layer on the substrate is located within an orthographic projection of the first sub-film layer on the substrate; Preferably, the first conductive portion further includes a third sub-film layer, the third sub-film layer is located on a side of the first sub-film layer close to the substrate, and the orthographic projection of the first sub-film layer on the substrate is located within the orthographic projection of the third sub-film layer on the substrate.

10. The display panel according to claim 3, characterized in that: Also includes: A pixel definition layer, disposed on a side of the first electrode away from the substrate and enclosing a pixel opening, wherein the pixel opening is connected to the isolation opening; a light-emitting unit, at least partially located in the pixel opening, the light-emitting unit being electrically connected to the first electrode; Preferably, the isolation structure is located on a side of the pixel definition layer away from the substrate; Preferably, the material of the pixel definition layer includes an inorganic insulating material, and / or the material of the first insulating layer includes an organic insulating material; Preferably, the thickness of the pixel definition layer is less than the thickness of the first insulating layer; Preferably, the display panel further comprises a second electrode, and the second electrode is arranged on a side of the light emitting unit away from the substrate; Preferably, the material of the isolation structure includes a conductive material, and the second electrode is electrically connected to the isolation structure.

11. The display panel according to claim 10, characterized in that: Also includes: A first encapsulation layer is disposed on a side of the second electrode facing away from the substrate; Preferably, the display panel further comprises a second encapsulation layer, and the second encapsulation layer is arranged on a side of the first encapsulation layer away from the substrate; Preferably, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

12. A display panel, characterized in that: include: substrate; A first conductive portion, disposed on one side of the substrate; a first insulating layer, disposed on one side of the substrate and covering the first conductive portion, wherein the first insulating layer is provided with a first via hole, and the first via hole exposes a portion of the first conductive portion; a first electrode, disposed on a side of the first insulating layer away from the substrate, and the first electrode is electrically connected to the first conductive portion via the first via hole; a pixel definition layer, disposed on a side of the first electrode away from the substrate and enclosing a pixel opening, wherein an orthographic projection of the pixel opening on the substrate at least partially overlaps an orthographic projection of the first electrode on the substrate; The first via hole includes a first boundary in the first orthographic projection of the substrate, the first boundary is located within the orthographic projection of the first electrode on the substrate, the first boundary is located within the second orthographic projection of the first conductive portion on the substrate, and the first boundary is spaced apart from a boundary of the second orthographic projection.

13. The display panel according to claim 12, characterized in that: The minimum distance between the first boundary and the boundary of the second orthographic projection is m, where m satisfies: m≥0.2 μm; Preferably, m satisfies: m≥1.65 μm; Preferably, m satisfies: m≥1.85 μm.

14. The display panel according to claim 12, characterized in that: A fourth orthographic projection of the pixel opening on the substrate is spaced apart from the first orthographic projection, and the first boundary is located on a side of the first orthographic projection close to the fourth orthographic projection.

15. The display panel according to claim 12, characterized in that: The first orthographic projection is located within the second orthographic projection, and a boundary of the first orthographic projection is spaced apart from a boundary of the second orthographic projection; Preferably, the minimum distance between the boundary of the first orthographic projection and the boundary of the second orthographic projection is n, where n satisfies: n≥0.2 μm; Preferably, n satisfies: n≥1.65μn; Preferably, n satisfies: n≥1.85 μm.

16. The display panel according to claim 12, characterized in that: The first conductive portion includes a lap portion and a routing portion connected to each other, the first electrode is electrically connected to the lap portion via the first via hole, and the first orthographic projection is located within the orthographic projection of the lap portion of the substrate; Preferably, the orthographic projection of the overlapping portion on the substrate includes a second boundary close to the orthographic projection of the routing portion on the substrate, a fourth boundary opposite to the second boundary, and a third boundary connected between the second boundary and the fourth boundary, and the first boundary is arranged in parallel with the third boundary; Preferably, the minimum distances between the second boundary, the third boundary, the fourth boundary and the boundary of the first orthographic projection are equal.

17. The display panel according to claim 16, characterized in that: Along a direction perpendicular to the extending direction of the routing portion, the width of the routing portion is equal to the width of the overlapping portion; Alternatively, the width of the routing portion is smaller than the width of the overlapping portion.

18. The display panel according to claim 17, characterized in that: The first orthographic projection further includes a fifth boundary arranged opposite to the first boundary, the fifth boundary is located outside the orthographic projection of the first electrode on the substrate, or the fifth boundary is located inside the orthographic projection of the first electrode on the substrate; Preferably, the first orthographic projection is located within the orthographic projection of the first electrode on the substrate.

19. The display panel according to claim 12, characterized in that: Also includes: a light-emitting unit, at least partially located in the pixel opening, the light-emitting unit being electrically connected to the first electrode; A second electrode is disposed on a side of the light emitting unit away from the substrate; Preferably, the material of the first insulating layer includes an organic insulating material; Preferably, the material of the pixel definition layer includes an inorganic insulating material.

20. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 19.

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