Display panel and display device

Abstract

The application provides a display panel and a display device, and relates to the technical field of display. The display panel comprises a substrate, a planarization layer, a pixel definition layer and a plurality of light emitting units. The planarization layer is located on one side of the substrate in the thickness direction. The pixel definition layer is located on the side of the planarization layer away from the substrate. The pixel definition layer has a plurality of pixel openings. At least part of the light emitting units is located in the corresponding pixel openings. The light emitting unit comprises a first electrode, a light emitting layer and a second electrode arranged in sequence in the direction away from the substrate. The first electrodes of at least two adjacent light emitting units are arranged in the thickness direction of the substrate. The orthographic projection of the at least two first electrodes arranged in the thickness direction of the substrate on the substrate is overlapped. Alternatively, the interval distance of the orthographic projection of the at least two first electrodes arranged in the thickness direction of the substrate on the substrate in the direction parallel to the substrate is 0. The display panel provided by the application can improve the use performance.

Description

Technical Field

[0001] This application belongs to the field of display technology, and more specifically, relates to a display panel and a display device. Background Technology

[0002] Currently, organic light-emitting diode (OLED) display panels have advantages such as high image quality, energy saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0003] However, the performance and manufacturing process of current display devices need to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and a display device to improve the performance of the display device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a display panel, which includes a substrate, a planarization layer, a pixel definition layer, and a plurality of light-emitting units. The planarization layer is located on one side of the substrate in the thickness direction, and the pixel definition layer is located on the side of the planarization layer away from the substrate. The pixel definition layer has a plurality of pixel openings, and at least a portion of the light-emitting units is located in the corresponding pixel openings. The light-emitting unit includes a first electrode, a light-emitting layer, and a second electrode arranged sequentially in the direction away from the substrate. The first electrodes of at least two adjacent light-emitting units are staggered in the thickness direction of the substrate.

[0007] Wherein, the orthographic projections of at least two first electrodes staggered along the thickness direction of the substrate overlap on the substrate, or the orthographic projections of at least two first electrodes staggered along the thickness direction of the substrate have a spacing of 0 in the direction parallel to the substrate.

[0008] Through the above technical solution, the display panel provided in this application can reduce the distance between the first electrodes of two adjacent light-emitting units, allowing more light-emitting units to be arranged in the same space, thereby increasing the density of light-emitting units, i.e., increasing the pixel density, which is beneficial to improving the light-emitting effect. In addition, the first electrodes of at least two adjacent light-emitting units are staggered along the thickness direction of the substrate, which helps to avoid short circuits between the first electrodes of two adjacent light-emitting units.

[0009] Therefore, the display panel provided in this application can improve performance.

[0010] In some embodiments, the planarization layer includes multiple planar portions, with the first electrode of the light-emitting unit located on the side of the corresponding planar portion facing away from the substrate. The orthographic projection of the first electrode of the light-emitting unit on the substrate overlaps with the orthographic projection of the corresponding planar portion on the substrate. The thicknesses of the planar portions corresponding to at least two first electrodes, which are staggered along the thickness direction of the substrate, are different. In this way, the display panel provided in this application can stagger the first electrodes of adjacent light-emitting units by adjusting the thickness of the planarization layer, thereby helping to avoid short circuits between the first electrodes of adjacent light-emitting units.

[0011] In some embodiments, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different emitting colors. The first electrodes of at least two of the first, second, and third light-emitting units are staggered along the thickness direction of the substrate. In this way, the display panel provided by this application can stagger the first electrodes of the light-emitting units with different emitting colors along the thickness direction of the substrate, which helps to reduce the distance between the light-emitting units with different emitting colors, thereby improving the light-emitting effect.

[0012] In some embodiments, the display panel provided in this application includes multiple repeating units; each repeating unit includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; or, the repeating unit includes two first light-emitting units, one second light-emitting unit, and two third light-emitting units; or, the repeating unit includes two first light-emitting units, two second light-emitting units, and two third light-emitting units. The display panel provided in this application allows for adjustment of the layout of the light-emitting units by varying the number and type of light-emitting units within the repeating units, enabling adjustments for different products and improving applicability.

[0013] In some embodiments, the plurality of light-emitting units include a plurality of light-emitting unit groups arranged along a first direction, and a plurality of light-emitting unit groups including a plurality of light-emitting units arranged along a second direction, wherein the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the thickness direction of the substrate; in the light-emitting unit group, the first electrodes of two adjacent light-emitting units are spaced equidistant from the substrate; the first electrodes of the light-emitting units in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate; in the light-emitting unit group, the second electrodes of two adjacent light-emitting units are spaced equidistant from the substrate and are integrally connected; the second electrodes of the light-emitting units in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate.

[0014] In this way, the display panel provided in this application can be prepared in groups, which helps to improve the preparation efficiency of the display panel.

[0015] In some embodiments, the plurality of light-emitting unit groups include a first light-emitting unit group, a second light-emitting unit group, and a third light-emitting unit group arranged along a first direction. The first light-emitting unit group includes a plurality of first light-emitting units arranged along a second direction. The second light-emitting unit group includes a plurality of second light-emitting units arranged along a second direction. The third light-emitting unit group includes a plurality of third light-emitting units arranged along a second direction.

[0016] In this way, the same light-emitting unit group includes light-emitting units with the same light-emitting color, which facilitates the preparation of the light-emitting unit group and thus facilitates the preparation of the display panel.

[0017] In some embodiments, in the first light-emitting unit group, the first electrodes of two adjacent first light-emitting units are spaced apart from the substrate; and / or, in the second light-emitting unit group, the first electrodes of two adjacent second light-emitting units are spaced apart from the substrate; and / or, in the third light-emitting unit group, the first electrodes of two adjacent third light-emitting units are spaced apart from the substrate.

[0018] In this way, the distance between the first electrode of adjacent light-emitting units in the same light-emitting unit group and the substrate is equal, which facilitates the preparation of the first electrode of the light-emitting unit, thereby facilitating the preparation of the light-emitting unit group and, consequently, the preparation of the display panel.

[0019] In some embodiments, in the first light-emitting unit group, the second electrodes of two adjacent first light-emitting units are spaced equidistantly from the substrate and are integrally connected; and / or, in the second light-emitting unit group, the second electrodes of two adjacent second light-emitting units are spaced equidistantly from the substrate and are integrally connected; and / or, in the third light-emitting unit group, the second electrodes of two adjacent third light-emitting units are spaced equidistantly from the substrate and are integrally connected.

[0020] In this way, different light-emitting units in the same light-emitting unit group can share a second electrode, which facilitates the fabrication of the second electrode of the light-emitting unit, thereby facilitating the fabrication of the light-emitting unit group and, consequently, the fabrication of the display panel.

[0021] In some embodiments, the display panel includes a display area and a non-display area, wherein at least a portion of the non-display area surrounds the display area, and the light-emitting unit is located in the display area;

[0022] The display panel also includes a first conductive line and a second conductive line. Both the first conductive line and the second conductive line are located in the non-display area. The first conductive line is disposed on the same layer as the first electrode, and the second conductive line is disposed on the same layer as the second electrode and connected to it. The first conductive line and the second conductive line are connected.

[0023] The second conductive line includes a first conductive sub-line, a second conductive sub-line, and a third conductive sub-line. The first conductive sub-line is connected to the second electrode of the first light-emitting unit in the first light-emitting unit group, the second conductive sub-line is connected to the second electrode of the second light-emitting unit in the second light-emitting unit group, and the third conductive sub-line is connected to the second electrode of the third light-emitting unit in the third light-emitting unit group.

[0024] Optionally, the display panel also includes a semiconductor device, which includes a source and a drain, with a first conductive line electrically connected to the source and a first electrode electrically connected to the drain.

[0025] Secondly, this application provides a display device that includes the display panel of any of the above embodiments. The display device provided by this application has the same or similar technical effects as the display panel of any of the above embodiments. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0029] Figure 3 For along Figure 2 One of the cross-sectional structural diagrams of the CC line;

[0030] Figure 4 For along Figure 2 Sectional view of the CC line, part two;

[0031] Figure 5 For along Figure 2 One of the cross-sectional structural diagrams of the DD line in the middle;

[0032] Figure 6 This is one of the schematic diagrams of the planar structure of the repeating unit provided in the embodiments of this application;

[0033] Figure 7 For along Figure 2 Sectional view of the DD line, part two;

[0034] Figure 8 A second schematic diagram of the planar structure of the repeating unit provided in the embodiments of this application;

[0035] Figure 9 The third schematic diagram of the planar structure of the repeating unit provided in the embodiments of this application;

[0036] Figure 10 This is one of the side view structural schematic diagrams of the repeating unit provided in the embodiments of this application;

[0037] Figure 11 A second side view of the repeating unit provided in an embodiment of this application;

[0038] Figure 12 The third side view of the repeating unit provided in the embodiments of this application;

[0039] Figure 13 Fourth side view of the repeating unit provided in the embodiments of this application;

[0040] Figure 14 Fifth side view structural schematic diagram of the repeating unit provided in the embodiments of this application;

[0041] Figure 15 Sixth side view structural schematic diagram of the repeating unit provided in the embodiments of this application;

[0042] Figure 16 for Figure 1 A magnified view of a portion of point E in the middle;

[0043] Figure 17 For along Figure 16 Cross-sectional view of the middle FF line;

[0044] Figure 18 For along Figure 16 Cross-sectional view of the middle HH line.

[0045] The following are the labeling elements in the figure:

[0046] 100 - Display panel; 110 - Display area; 120 - Non-display area;

[0047] 1-Substrate; 2-First gate dielectric layer; 3-Capacitor dielectric layer; 4-Buffer layer; 5-Second gate dielectric layer; 6-Interlayer dielectric layer; 7-First planarization layer; 8-Second planarization layer; 801-Planarization portion; 9-Pixel definition layer; 91-Isolation structure;

[0048] 10a-Repeating unit; 10-Light-emitting unit; 101-First electrode; 102-Light-emitting layer; 103-Second electrode; 11-Bottom light-shielding layer; 12-First active layer; 13-First conductive layer; 14-Second conductive layer; 15-Second active layer; 16-Third conductive layer; 17-Fourth conductive layer; 18-Fifth conductive layer; 191-First inorganic encapsulation layer; 192-Organic encapsulation layer; 193-Second inorganic encapsulation layer;

[0049] 20 - First conductive line; 21 - Second conductive line. Detailed Implementation

[0050] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0051] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0052] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] Currently, organic light-emitting diode (OLED) display panels have advantages such as high image quality, energy saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0055] However, the performance and manufacturing process of current display devices need to be improved.

[0056] This application provides a display device, which can be a mobile phone, television, tablet computer, laptop computer, desktop computer, vehicle display terminal, wearable device, advertising display device, etc.

[0057] Please see Figure 1 , Figure 1 This is a schematic diagram of the planar structure of the display panel 100 provided in the embodiments of this application. The display device provided in the embodiments of this application includes a display panel 100, which can be an organic light-emitting diode (OLED) display panel 100 or a micro light-emitting diode (Micro LED / μLED) display panel 100.

[0058] The display panel 100 provided in this application embodiment includes a substrate 1 and a plurality of light-emitting units 10 located on one side of the substrate 1. The plurality of light-emitting units 10 include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit with different light-emitting colors.

[0059] Optionally, the light-emitting unit 10 includes a first electrode layer, a light-emitting layer 102, and a second electrode layer sequentially stacked along the direction away from the substrate 1. The first electrode layer is electrically connected to the drain electrode, and the second electrode layer is electrically connected to the source electrode.

[0060] Optionally, the first electrode layer may include a plurality of first electrodes 101. Optionally, the second electrode layer may include a plurality of second electrodes 103. Optionally, the second electrode layer may be composed of second electrodes 103 deposited over its entire surface.

[0061] Optionally, the first electrode 101 can be an anode, and the second electrode 103 can be a cathode.

[0062] That is, the light-emitting unit 10 may include a first electrode 101, a light-emitting layer 102 and a second electrode 103 arranged sequentially in a direction away from the substrate 1.

[0063] Please refer to the following: Figure 2 and Figure 3 , Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Figure 3 For along Figure 2 One of the cross-sectional structural diagrams of the CC line in this application embodiment shows that the display panel 100 provided in this application includes a semiconductor device, which is located on one side of the substrate 1 in the thickness direction (Z direction in the figure).

[0064] Optionally, the substrate 1 can be a flexible substrate 1.

[0065] Optionally, the semiconductor device includes a source, a drain, and a gate.

[0066] Optionally, the display panel 100 provided in this application embodiment includes a driving device layer, which includes a first active layer 12 (Polysilicon, PSI), a first conductive layer 13 (M1), a second conductive layer 14 (M2), a second active layer 15 (Indium Gallium Zinc Oxide, IGZO), a third conductive layer 16 (M3), and a fourth conductive layer 17 (M4) that are sequentially stacked and insulated from each other along a direction away from the substrate 1.

[0067] Optionally, the driving device layer further includes a fifth conductive layer 18 (M5) located on the side of the fourth conductive layer 17 away from the substrate 1, and the fourth conductive layer 17 and the fifth conductive layer 18 are insulated from each other.

[0068] Optionally, the driving device layer includes semiconductor devices.

[0069] The display panel 100 provided in this application embodiment further includes multiple insulating film layers, which include a first gate dielectric layer 2 (GL1), a capacitor dielectric layer 3 (CI), a buffer layer 4, a second gate dielectric layer 5 (GL2), an inter-layer dielectric layer 6 (ILD), a first planarization layer 7 (PLN1), a second planarization layer 8 (PLN2), and a pixel definition layer 9 (PDL) arranged sequentially along the direction away from the substrate 1.

[0070] The first conductive layer 13 is disposed between the first gate dielectric and the capacitor dielectric layer 3, the second conductive layer 14 is disposed between the capacitor dielectric layer 3 and the buffer layer 4, the third conductive layer 16 is disposed between the second gate dielectric layer 5 and the interlayer dielectric layer 6, the fourth conductive layer 17 is disposed between the interlayer dielectric layer 6 and the first planarization layer 7, and the fifth conductive layer 18 is disposed between the first planarization layer 7 and the second planarization layer 8.

[0071] In addition, the first active layer 12 is disposed between the substrate 1 and the first gate dielectric layer 2, the second active layer 15 is disposed between the buffer layer 4 and the second gate dielectric layer 5, the first electrode layer is disposed between the second planarization layer 8 and the pixel definition layer 9, and the pixel definition layer 9 is provided with a pixel opening that exposes a portion of the first electrode layer.

[0072] Optionally, the substrate 1 is provided with a bottom light-shielding layer 11 opposite to the first active layer 12.

[0073] Please continue reading. Figure 2 and Figure 3 Optionally, the display panel 100 provided in this application embodiment further includes a light-emitting unit 10, which is located on one side of the substrate 1 and is electrically connected to the source and drain respectively.

[0074] Please continue reading. Figure 2 and Figure 3 Multiple conductive layers are sequentially spaced along the thickness direction of substrate 1 (Z direction in the figure), and the multiple conductive layers are located between substrate 1 and light-emitting unit 10. The conductive layer closer to light-emitting unit 10 can be the fourth conductive layer 17, or the conductive layer closer to light-emitting unit 10 can be the fifth conductive layer 18.

[0075] Optionally, the conductive layers are all metallic layers. For example, the material of the conductive layer may include molybdenum (Mo). Alternatively, the material of the conductive layer may include molybdenum (Mo), aluminum (Al), and titanium (Ti). For example, a conductive layer may include three film layers, the materials of which may be molybdenum (Mo), aluminum (Al), and titanium (Ti), respectively.

[0076] Please refer to the following: Figure 2 and Figure 4 , Figure 4 For along Figure 2 The second cross-sectional view of the CC line. Optionally, the display panel 100 provided in this application embodiment includes an isolation structure 91. The isolation structure 91 is located on the side of the pixel definition layer 9 away from the substrate 1. The isolation structure 91 encloses and forms an isolation opening, which is connected to the pixel opening.

[0077] Optionally, the material of the isolation structure 91 may include a metallic material.

[0078] Optionally, the isolation structure 91 may include a first layer and a second layer, the second layer being located on the side of the first layer away from the substrate 1, the material of the first layer may include aluminum (Al), and the material of the second layer may include titanium (Ti).

[0079] Optionally, the isolation structure 91 may further include a third layer located on the side of the first layer facing the substrate 1. Exemplarily, the material of the third layer may include titanium (Ti). Exemplarily, the material of the third layer may include molybdenum (Mo).

[0080] To seal the light-emitting unit 10, in some embodiments, the display panel 100 provided in this application further includes a first inorganic encapsulation layer 191, an organic encapsulation layer 192, and a second inorganic encapsulation layer 193 sequentially stacked along a direction away from the substrate 1. The first inorganic encapsulation layer 191 is located on the side of the light-emitting unit 10 facing away from the substrate 1. That is, the organic encapsulation layer 192 covers the first inorganic encapsulation layer 191, and the second inorganic encapsulation layer 193 covers the organic encapsulation layer 192.

[0081] Optionally, the first inorganic encapsulation layer 191 can be an inorganic encapsulation layer formed by chemical vapor deposition (CVD) and patterning.

[0082] Alternatively, the organic encapsulation layer 192 can be made by inkjet printing (IJP).

[0083] Alternatively, the second inorganic encapsulation layer 193 may be an inorganic encapsulation layer formed by chemical vapor deposition (CVD).

[0084] The inventor discovered this; please refer to it as well. Figure 5 and Figure 6 , Figure 5 For along Figure 2 One of the cross-sectional structural diagrams of the DD line in the middle. Figure 6 This is one of the planar structural schematic diagrams of the repeating unit 10a provided in the embodiments of this application.

[0085] In related technologies, the first electrode 101 of different light-emitting units 10 is spaced at the same distance from the substrate 1. To avoid short circuits and leakage between adjacent first electrodes 101, two adjacent first electrodes 101 are spaced apart along a direction parallel to the substrate 1. This results in a low arrangement density of the light-emitting units 10, that is, a low pixel density (Pixels Per Inch, PPI).

[0086] For example, please see Figure 2 The display panel 100 provided in this application embodiment may include a plurality of repeating units 10a, and each repeating unit 10a includes a plurality of light-emitting units 10. For example, the repeating unit 10a includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit. The sum of the areas of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit projected onto the substrate 1 is much smaller than the area of ​​the repeating unit 10a, resulting in a relatively low pixel density.

[0087] To resolve the above technical issues, please refer to [link / reference]. Figure 7 , Figure 7 For along Figure 2The second cross-sectional view of the DD line in this application embodiment provides a display panel 100, which includes a substrate 1, a planarization layer, a pixel definition layer 9, and a plurality of light-emitting units 10. The planarization layer is located on one side of the substrate 1 in the thickness direction, and the pixel definition layer 9 is located on the side of the planarization layer opposite to the substrate 1. The pixel definition layer 9 has a plurality of pixel openings, and at least a portion of the light-emitting units 10 is located in the corresponding pixel openings. The light-emitting unit 10 includes a first electrode 101, a light-emitting layer 102, and a second electrode 103 arranged sequentially along the direction opposite to the substrate 1. The first electrodes 101 of at least two adjacent light-emitting units 10 are arranged along the thickness direction of the substrate 1 (e.g., ...). Figure 7 The Z-direction is offset.

[0088] The staggered arrangement refers to the two first electrodes 101 being spaced apart in the thickness direction of the substrate 1, with the spacing being greater than 0.

[0089] In some examples, please refer to Figure 8 , Figure 8 This is a second schematic diagram of the planar structure of the repeating unit 10a provided in this application embodiment. The orthographic projections of at least two first electrodes 101, which are staggered along the thickness direction of the substrate 1, on the substrate 1 have a spacing of 0 in the direction parallel to the substrate 1. That is, the first electrodes 101 of two adjacent light-emitting units 10 are spaced apart in the thickness direction of the substrate 1 in the direction parallel to the substrate 1, and the orthographic projections of the two first electrodes 101 on the substrate 1 do not overlap, but they share a common edge.

[0090] In other examples, please refer to Figure 9 , Figure 8 This is a third schematic diagram of the planar structure of the repeating unit 10a provided in this application embodiment. At least two first electrodes 101, which are staggered along the thickness direction of the substrate 1, have overlapping orthographic projections on the substrate 1. That is, the first electrodes 101 of two adjacent light-emitting units 10 are spaced apart in the thickness direction of the substrate 1 in a direction parallel to the substrate 1, and the orthographic projections of the two first electrodes 101 on the substrate 1 overlap.

[0091] Through the above technical solutions, the display panel 100 provided in this application embodiment can reduce the distance between the first electrodes 101 of two adjacent light-emitting units 10, and more light-emitting units 10 can be arranged in the same space, thereby increasing the density of light-emitting units 10, that is, increasing the pixel density, which is beneficial to improving the light-emitting effect. In addition, the first electrodes 101 of at least two adjacent light-emitting units 10 are staggered along the thickness direction of the substrate 1, which can help avoid short circuits between the first electrodes 101 of two adjacent light-emitting units 10.

[0092] Therefore, the display panel 100 provided in this application embodiment can improve performance.

[0093] It is understandable that when the fourth conductive layer 17 is closer to the light-emitting unit 10 among the multiple conductive layers, the planarization layer is a single layer, and the first planarization layer 7 and the second planarization layer 8 are connected as a single unit and fabricated simultaneously to form the planarization layer. When the fifth conductive layer 18 is closer to the light-emitting unit 10 among the multiple conductive layers, the planarization layer consists of two layers, namely the first planarization layer 7 and the second planarization layer 8. The first planarization layer 7 and the second planarization layer 8 are fabricated separately, and the fifth conductive layer 18 is located between the first planarization layer 7 and the second planarization layer 8. That is, the fifth conductive layer 18 is fabricated after the first planarization layer 7 is fabricated, and the second planarization layer 8 is fabricated after the fifth conductive layer 18 is fabricated.

[0094] In some embodiments, the planarization layer includes a plurality of planar portions 801. The first electrode 101 of the light-emitting unit 10 is located on the side of the corresponding planar portion 801 facing away from the substrate 1. The orthographic projection of the first electrode 101 of the light-emitting unit 10 on the substrate 1 overlaps with the orthographic projection of the corresponding planar portion 801 on the substrate 1. The thicknesses of the planar portions 801 corresponding to at least two first electrodes 101 that are staggered along the thickness direction of the substrate 1 are different. In this way, the display panel 100 provided in this application embodiment can stagger the first electrodes 101 of adjacent light-emitting units 10 by adjusting the thickness of the planarization layer, thereby helping to avoid short circuits of the first electrodes 101 of adjacent light-emitting units 10.

[0095] It is understood that the multiple planar portions 801 of the planarization layer are integrally connected, and the distance between the first electrode 101 corresponding to the planar portion 801 with a larger thickness and the substrate 1 is greater than the distance between the first electrode 101 corresponding to the planar portion 801 with a smaller thickness and the substrate 1.

[0096] Please refer to the following: Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 , Figure 10 This is one of the side view structural schematic diagrams of the repeating unit 10a provided in the embodiments of this application. Figure 11 This is the second side view structural schematic diagram of the repeating unit 10a provided in the embodiments of this application. Figure 12 This is the third side view structural schematic diagram of the repeating unit 10a provided in the embodiments of this application. Figure 13 This is the fourth side view structural schematic diagram of the repeating unit 10a provided in the embodiments of this application. Figure 14 This is the fifth side view structural schematic diagram of the repeating unit 10a provided in the embodiments of this application. Figure 15 This is the sixth side view structural schematic diagram of the repeating unit 10a provided in the embodiments of this application.

[0097] In some embodiments, the plurality of light-emitting units 10 include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors, and the first electrodes 101 of at least two of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are staggered along the thickness direction of the substrate 1.

[0098] For example, the first electrode 101 of the first light-emitting unit and the first electrode 101 of the second light-emitting unit are offset along the thickness direction of the substrate 1.

[0099] For example, the first electrode 101 of the second light-emitting unit and the first electrode 101 of the third light-emitting unit are offset along the thickness direction of the substrate 1.

[0100] For example, the first electrode 101 of the first light-emitting unit and the first electrode 101 of the third light-emitting unit are offset along the thickness direction of the substrate 1.

[0101] For example, the first electrode 101 of the first light-emitting unit, the first electrode 101 of the second light-emitting unit, and the first electrode 101 of the third light-emitting unit are staggered along the thickness direction of the substrate 1.

[0102] In this way, the display panel 100 provided in this application embodiment can stagger the first electrodes 101 of the light-emitting units 10 of different light-emitting colors along the thickness direction of the substrate 1, which is beneficial to reducing the distance between the light-emitting units 10 of different light-emitting colors, thereby improving the light-emitting effect.

[0103] In some embodiments, please refer to the following: Figure 10 and Figure 11 The display panel 100 provided in this application embodiment includes a plurality of repeating units 10a, and the repeating unit 10a includes two first light-emitting units, one second light-emitting unit and two third light-emitting units.

[0104] For example, two first light-emitting units are located on one side of a second light-emitting unit, and two third light-emitting units are located on the other side of the second light-emitting unit.

[0105] For example, two first light-emitting units are located on either side of a second light-emitting unit, and two third light-emitting units are located on either side of the second light-emitting unit, with the third light-emitting units located on the side of the first light-emitting unit furthest from the second light-emitting unit; that is, the first light-emitting unit is located between the second and third light-emitting units. The second light-emitting unit can emit blue light, the first light-emitting unit can emit red light, and the third light-emitting unit can emit green light.

[0106] Please see Figure 10The distance between the first electrode 101 of the second light-emitting unit and the substrate 1 is the largest, which means the thickness of the flat portion 801 corresponding to the first electrode 101 of the second light-emitting unit is the largest. The distance between the first electrode 101 of the third light-emitting unit and the substrate 1 is smaller than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1, and the distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is smaller than the distance between the first electrode 101 of the third light-emitting unit and the substrate 1, which means the distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is the smallest.

[0107] Please see Figure 11 The distance between the first electrode 101 of the second light-emitting unit and the substrate 1 is the smallest, which means the thickness of the flat portion 801 corresponding to the first electrode 101 of the second light-emitting unit is the smallest. The distance between the first electrode 101 of the third light-emitting unit and the substrate 1 is greater than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1. The distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is greater than the distance between the first electrode 101 of the third light-emitting unit and the substrate 1. That is, the distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is the largest.

[0108] In some embodiments, please refer to Figure 12 The display panel 100 provided in this application embodiment includes a plurality of repeating units 10a, and the repeating unit 10a includes two first light-emitting units, two second light-emitting units and two third light-emitting units.

[0109] For example, two first light-emitting units, two second light-emitting units, and two third light-emitting units are arranged side by side in sequence.

[0110] For example, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit alternate in sequence. For instance, the arrangement order of the six light-emitting units 10 in the repeating unit 10a is: first light-emitting unit, second light-emitting unit, third light-emitting unit, first light-emitting unit, second light-emitting unit, third light-emitting unit. Among them, the first light-emitting unit can emit red light, the second light-emitting unit can emit blue light, and the third light-emitting unit can emit green light.

[0111] In some embodiments, please refer to the following: Figure 13 , Figure 14 and Figure 15 The display panel 100 provided in this application embodiment includes a plurality of repeating units 10a, each repeating unit 10a including a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit. The first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are arranged sequentially. The first light-emitting unit can emit red light, the second light-emitting unit can emit blue light, and the third light-emitting unit can emit green light.

[0112] For example, please refer to Figure 13 The distance between the first electrode 101 of the third light-emitting unit and the substrate 1 is smaller than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1. The distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is smaller than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1. The distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is equal to the distance between the first electrode 101 of the third light-emitting unit and the substrate 1. Among them, the distance between the first electrode 101 of the second light-emitting unit and the substrate 1 is the largest, that is, the thickness of the flat portion 801 corresponding to the first electrode 101 of the second light-emitting unit is the largest.

[0113] For example, please refer to Figure 14 The distance between the first electrode 101 of the third light-emitting unit and the substrate 1 is greater than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1. The distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is greater than the distance between the first electrode 101 of the second light-emitting unit and the substrate 1. The distance between the first electrode 101 of the first light-emitting unit and the substrate 1 is equal to the distance between the first electrode 101 of the third light-emitting unit and the substrate 1. Among these, the distance between the first electrode 101 of the second light-emitting unit and the substrate 1 is the smallest, which means that the thickness of the flat portion 801 corresponding to the first electrode 101 of the second light-emitting unit is the smallest.

[0114] For example, please refer to Figure 15 The distance between the first electrode 101 of the first light-emitting unit, the first electrode 101 of the second light-emitting unit, the first electrode 101 of the third light-emitting unit and the substrate 1 gradually increases, that is, the thickness of the flat portion 801 corresponding to the first electrode 101 of the first light-emitting unit, the first electrode 101 of the second light-emitting unit and the first electrode 101 of the third light-emitting unit gradually increases.

[0115] It is understood that the display panel 100 provided in this application embodiment can adjust the layout of the light-emitting units 10 by changing the number and type of the light-emitting units 10 in the repeating unit 10a, which can be adjusted according to different products and improve applicability.

[0116] In some embodiments, please refer to the following: Figure 16 and Figure 17 , Figure 16 for Figure 1 A magnified view of a portion of point E in the middle. Figure 17 For along Figure 16 A cross-sectional view of the FF line shows that multiple light-emitting units 10 include those along a first direction (e.g., Figure 16 Multiple light-emitting unit groups arranged in the X direction (as shown in the image), the light-emitting unit groups including multiple units arranged along the second direction (e.g., ... Figure 16Multiple light-emitting units 10 are arranged in the Y direction of the substrate 1. The first direction is perpendicular to the second direction, and both the first and second directions are perpendicular to the thickness direction of the substrate 1.

[0117] Optionally, in the light-emitting unit group, the first electrodes 101 of two adjacent light-emitting units 10 are spaced equidistant from the substrate 1, and the first electrodes 101 of the light-emitting units 10 in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate 1. In this way, the first electrodes 101 of different light-emitting units 10 can be fabricated simultaneously in the same light-emitting unit group.

[0118] Optionally, in the light-emitting unit group, the second electrodes 103 of two adjacent light-emitting units 10 are spaced equidistant from the substrate 1 and are integrally connected. The second electrodes 103 of the light-emitting units 10 in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate 1. In this way, the second electrodes 103 of different light-emitting units 10 can be fabricated simultaneously in the same light-emitting unit group.

[0119] Therefore, the display panel 100 provided in this application embodiment can be prepared in groups, and each light-emitting unit group can be prepared simultaneously, which is beneficial to improving the preparation efficiency of the display panel 100.

[0120] In some embodiments, the plurality of light-emitting unit groups include a first light-emitting unit group, a second light-emitting unit group, and a third light-emitting unit group arranged along a first direction. The first light-emitting unit group includes a plurality of first light-emitting units arranged along a second direction. The second light-emitting unit group includes a plurality of second light-emitting units arranged along a second direction. The third light-emitting unit group includes a plurality of third light-emitting units arranged along a second direction.

[0121] In this way, the same light-emitting unit group includes light-emitting units 10 with the same light-emitting color, which facilitates the preparation of the light-emitting unit group and thus facilitates the preparation of the display panel 100.

[0122] In some embodiments, in the first light-emitting unit group, the first electrodes 101 of two adjacent first light-emitting units are spaced equidistant from the substrate 1.

[0123] Optionally, in the second light-emitting unit group, the first electrode 101 of two adjacent second light-emitting units is spaced equidistant from the substrate 1.

[0124] Optionally, in the third light-emitting unit group, the first electrode 101 of two adjacent third light-emitting units is spaced equidistant from the substrate 1.

[0125] In this way, the distance between the first electrode 101 of adjacent light-emitting units 10 in the same light-emitting unit group and the substrate 1 is equal, which facilitates the preparation of the first electrode 101 of the light-emitting unit 10, thereby facilitating the preparation of the light-emitting unit group and further facilitating the preparation of the display panel 100.

[0126] In some embodiments, in the first light-emitting unit group, the second electrodes 103 of two adjacent first light-emitting units are spaced at equal distances from the substrate 1, and the second electrodes 103 of two adjacent first light-emitting units are integrally connected.

[0127] Optionally, in the second light-emitting unit group, the second electrodes 103 of two adjacent second light-emitting units are spaced at equal distances from the substrate 1, and the second electrodes 103 of two adjacent second light-emitting units are integrally connected.

[0128] Optionally, in the third light-emitting unit group, the second electrodes 103 of two adjacent third light-emitting units are spaced at equal distances from the substrate 1, and the second electrodes 103 of two adjacent third light-emitting units are integrally connected.

[0129] In this way, different light-emitting units 10 in the same light-emitting unit group can share a second electrode 103, which facilitates the preparation of the second electrode 103 of the light-emitting unit 10, thereby facilitating the preparation of the light-emitting unit group and, consequently, the preparation of the display panel 100.

[0130] In some embodiments, the display panel 100 provided in this application includes an active area 110 (AA) and a non-display area 120 (NA), with at least a portion of the non-display area 120 surrounding the active area 110.

[0131] Optionally, the non-display area 120 includes a package area (PA) connected to the display area 110 and a surrounding area (SA) surrounding the package area.

[0132] Optionally, the non-display area 120 can be the area of ​​the display area 110 near the border, and at least a portion of the non-display area 120 surrounds the display area 110.

[0133] Optionally, the non-display area 120 can also be a hole area.

[0134] Optionally, please refer to the following as well. Figure 17 and Figure 18 , Figure 18 For along Figure 16The cross-sectional view of the HH line shows that the display panel 100 provided in this embodiment of the application also includes a first conductive line 20 and a second conductive line 21. The first conductive line 20 and the second conductive line 21 are both located in the non-display area 120. The first conductive line 20 is disposed in the same layer as the first electrode 101, and the second conductive line 21 is disposed in the same layer as the second electrode 103 and connected thereto. The first conductive line 20 and the second conductive line 21 are connected.

[0135] The second conductive line 21 includes a first conductive sub-line, a second conductive sub-line, and a third conductive sub-line. The first conductive sub-line is connected to the second electrode 103 of the first light-emitting unit in the first light-emitting unit group, the second conductive sub-line is connected to the second electrode 103 of the second light-emitting unit in the second light-emitting unit group, and the third conductive sub-line is connected to the second electrode 103 of the third light-emitting unit in the third light-emitting unit group.

[0136] Optionally, the first conductive line 20 is electrically connected to the source, and the first electrode 101 is electrically connected to the drain.

[0137] It is understandable that the first, second, and third conductive sub-lines of the second conductive line 21 are spaced apart from the substrate 1 at different distances. That is, the first, second, and third conductive sub-lines of the second conductive line 21 are staggered in the thickness direction of the substrate 1 in a stepped manner, which can help improve the impedance and thus help avoid lateral (parallel to substrate 1) leakage of the second conductive line 21 and the second electrode 103.

[0138] It should be noted that when the fourth conductive layer 17 is closer to the light-emitting unit 10 among the multiple conductive layers, the second conductive line 21 is connected to the third conductive layer 16 via a bridging wire passing through a via, and the third conductive layer 16 is connected to the semiconductor device. When the fifth conductive layer 18 is closer to the light-emitting unit 10 among the multiple conductive layers, the second conductive line 21 is connected to the fourth conductive layer 17 via a bridging wire passing through a via, and the fourth conductive layer 17 is connected to the semiconductor device.

[0139] Optionally, the display device in this application embodiment includes the display panel 100 of any of the above embodiments. The display device provided in this application embodiment has the same or similar technical effects as the display panel 100 of any of the above embodiments.

[0140] The above are merely specific embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; A planarization layer, wherein the planarization layer is located on one side of the substrate in the thickness direction; A pixel definition layer is located on the side of the planarization layer opposite to the substrate, and the pixel definition layer has multiple pixel openings; Multiple light-emitting units, at least a portion of which are located within the corresponding pixel opening, each light-emitting unit including a first electrode, a light-emitting layer, and a second electrode arranged sequentially in a direction away from the substrate, wherein the first electrodes of at least two adjacent light-emitting units are staggered along the thickness direction of the substrate; in, The orthographic projections of at least two first electrodes, which are offset along the thickness direction of the substrate, overlap on the substrate; or, the orthographic projections of at least two first electrodes, which are offset along the thickness direction of the substrate, have a spacing of 0 in a direction parallel to the substrate.

2. The display panel as described in claim 1, characterized in that, The planarization layer includes multiple planar portions. The first electrode of the light-emitting unit is located on the side of the corresponding planar portion away from the substrate. The orthographic projection of the first electrode of the light-emitting unit on the substrate overlaps with the orthographic projection of the corresponding planar portion on the substrate. The thicknesses of the planar portions corresponding to at least two first electrodes that are staggered along the thickness direction of the substrate are different.

3. The display panel as described in claim 1, characterized in that, The plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors, wherein the first electrodes of at least two of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are staggered along the thickness direction of the substrate.

4. The display panel as described in claim 3, characterized in that, The display panel includes multiple repeating units; The repeating unit includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; Alternatively, the repeating unit may include two first light-emitting units, one second light-emitting unit, and two third light-emitting units; Alternatively, the repeating unit may include two first light-emitting units, two second light-emitting units, and two third light-emitting units.

5. The display panel as described in claim 3, characterized in that, The plurality of light-emitting units include a plurality of light-emitting unit groups arranged along a first direction, and the light-emitting unit groups include a plurality of light-emitting units arranged along a second direction, wherein the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the thickness direction of the substrate; In the light-emitting unit group, the first electrode of two adjacent light-emitting units is spaced equidistant from the substrate; The first electrodes of the light-emitting units in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate; In the light-emitting unit group, the second electrodes of two adjacent light-emitting units are spaced equidistant from the substrate and are integrally connected. The second electrodes of the light-emitting units in two adjacent light-emitting unit groups are staggered along the thickness direction of the substrate.

6. The display panel as described in claim 5, characterized in that, The plurality of light-emitting unit groups include a first light-emitting unit group, a second light-emitting unit group, and a third light-emitting unit group arranged along a first direction. The first light-emitting unit group includes a plurality of first light-emitting units arranged along a second direction. The second light-emitting unit group includes a plurality of second light-emitting units arranged along the second direction. The third light-emitting unit group includes a plurality of third light-emitting units arranged along the second direction.

7. The display panel as described in claim 6, characterized in that, In the first light-emitting unit group, the first electrodes of two adjacent first light-emitting units are spaced equidistant from the substrate; and / or, in the second light-emitting unit group, the first electrodes of two adjacent second light-emitting units are spaced equidistant from the substrate; and / or, in the third light-emitting unit group, the first electrodes of two adjacent third light-emitting units are spaced equidistant from the substrate.

8. The display panel as described in claim 6, characterized in that, In the first light-emitting unit group, the second electrodes of two adjacent first light-emitting units are spaced equidistantly from the substrate and are integrally connected; and / or, in the second light-emitting unit group, the second electrodes of two adjacent second light-emitting units are spaced equidistantly from the substrate and are integrally connected; and / or, in the third light-emitting unit group, the second electrodes of two adjacent third light-emitting units are spaced equidistantly from the substrate and are integrally connected.

9. The display panel as described in claim 8, characterized in that, The display panel includes a display area and a non-display area, wherein at least a portion of the non-display area surrounds the display area, and the light-emitting unit is located in the display area; The display panel further includes a first conductive line and a second conductive line. Both the first conductive line and the second conductive line are located in the non-display area. The first conductive line is disposed on the same layer as the first electrode, and the second conductive line is disposed on the same layer as the second electrode and connected to it. The first conductive line is connected to the second conductive line. The second conductive line includes a first conductive sub-line, a second conductive sub-line, and a third conductive sub-line. The first conductive sub-line is connected to the second electrode of the first light-emitting unit in the first light-emitting unit group, the second conductive sub-line is connected to the second electrode of the second light-emitting unit in the second light-emitting unit group, and the third conductive sub-line is connected to the second electrode of the third light-emitting unit in the third light-emitting unit group. Preferably, the display panel further includes a semiconductor device, the semiconductor device including a source and a drain, the first conductive line being electrically connected to the source, and the first electrode being electrically connected to the drain.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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