Display panel and display device

Abstract

The utility model provides a display panel and a display device. The display panel includes: a substrate; the partition structure is arranged on one side of the base plate, and an opening structure is defined by the partition structure; the light-emitting layer comprises a plurality of light-emitting structures separated by partition structures, and the light-emitting structures are located in the opening structures; the first electrode layer is arranged on the side, away from the substrate, of the light-emitting layer and comprises a plurality of first electrodes, and the first electrodes corresponding to the adjacent light-emitting structures are separated by separation structures; the electrode connecting layers are arranged on the sides, away from the substrate, of the first electrode layers, and the adjacent first electrodes are electrically connected through the electrode connecting layers. According to the utility model, the adjacent first electrodes are electrically connected by arranging the electrode connecting layers on the sides, deviating from the substrate, of the first electrode layers, so that the problem of open circuit generated by the first electrode layers under the influence of the partition structures is solved, and the circuit stability of the first electrode layers is ensured.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices have attracted widespread attention due to their display characteristics and quality that surpass those of liquid crystal displays, such as thinness, short response time, low driving voltage, better display colors and display viewing angles.

[0003] However, the display effect of the existing OLED display device cannot reach the ideal state. Utility Model Content

[0004] The purpose of the utility model is to provide a display panel and a display device to solve the problem of poor display effect of the existing OLED display device.

[0005] To achieve the above-mentioned purpose, the present application provides a display panel, which includes a substrate, a partition structure, a light-emitting layer, a first electrode layer and an electrode connection layer. The partition structure is arranged on one side of the substrate, and the partition structure encloses an opening structure. The light-emitting layer includes a plurality of light-emitting structures separated by the partition structure, and the light-emitting structure is located in the opening structure. The first electrode layer is arranged on the side of the light-emitting layer away from the substrate, and the first electrode layer includes a plurality of first electrodes, and the first electrodes corresponding to adjacent light-emitting structures are separated by the partition structure. The electrode connection layer is arranged on the side of the first electrode layer away from the substrate, and adjacent first electrodes are electrically connected through the electrode connection layer.

[0006] Further, the electrode connection layer covers at least a portion of the top surface of the partition structure and at least a portion of the side surface of the partition structure. Preferably, the electrode connection layer covers the top surface of the partition structure and the side surface of the partition structure.

[0007] Furthermore, the display panel further comprises a pixel defining layer, the pixel defining layer is located on one side of the substrate, the pixel defining layer comprises a pixel defining portion and a pixel opening formed by the pixel defining portion, and at least part of the pixel opening is connected to the opening structure. Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the corresponding opening structure on the substrate.

[0008] Further, the electrode connection layer includes a plurality of electrode connection portions arranged at intervals, and the positive projection of the pixel defining portion on the substrate covers the positive projection of the corresponding electrode connection portion on the substrate. Preferably, the electrode connection portion includes an opaque material. Preferably, the electrode connection portion includes at least one of a metal material and a conductive polymer.

[0009] Further, the electrode connection layer includes a plurality of light extraction sub-portions, and the positive projection of the plurality of light extraction sub-portions on the substrate covers the positive projection of the corresponding light-emitting structure on the substrate. Preferably, the light extraction sub-portion includes a first light extraction sub-portion and a second light extraction sub-portion arranged side by side in the same layer, and the first light extraction sub-portion and the second light extraction sub-portion have different thicknesses or different refractive indices. Preferably, the light extraction sub-portion includes a conductive oxide. Preferably, the electrode connection layer is a transparent film layer provided as a whole surface.

[0010] Further, the partition structure at least includes a first partition portion and a second partition portion. The second partition portion is located on a side of the first partition portion away from the substrate, and the positive projection of the first partition portion on the substrate is located within the positive projection of the second partition portion on the substrate. Preferably, the first partition portion and the second partition portion are integrally formed, or the first partition portion and the second partition portion are separately provided. Preferably, the partition structure is trapezoidal in reverse or T-shaped. Preferably, the partition structure includes a plurality of inorganic film layers stacked, or the partition structure includes an organic film layer and an inorganic film layer stacked. Preferably, the first partition portion and / or the second partition portion includes a conductive material, and the first partition portion and / or the second partition portion is electrically connected to the corresponding first electrode. Preferably, the height of the partition structure is 0.2 - 2 microns. Preferably, the bottom width of the partition structure is 0.5 - 8 microns. Preferably, the positive projections of the plurality of partition structures on the substrate form a network structure.

[0011] The present application also provides a display panel, which includes a substrate, a partition structure, a light-emitting layer, a first electrode layer and an electrode connection layer. The partition structure is arranged on one side of the substrate, and the partition structure encloses an opening structure. The light-emitting layer includes a plurality of light-emitting structures separated by the partition structure, and the light-emitting structure is located in the opening structure. The first electrode layer is arranged on the side of the light-emitting layer away from the substrate, the first electrode layer includes a plurality of first electrodes, and the first electrodes corresponding to adjacent light-emitting structures are separated by the partition structure. The electrode connection layer is arranged on the side of the first electrode layer away from the substrate, the electrode connection layer includes a plurality of electrode connection parts and a plurality of light extraction sub-parts, and the adjacent first electrodes are electrically connected through the corresponding electrode connection parts, and the orthographic projections of the plurality of light extraction sub-parts on the substrate cover the orthographic projections of the corresponding light-emitting structures on the substrate.

[0012] Further, the light extraction sub-section includes a first light extraction sub-section and a second light extraction sub-section arranged in parallel in the same layer, and the first light extraction sub-section and the second light extraction sub-section have different thicknesses or different refractive indices. Preferably, the light extraction sub-section includes a conductive oxide. Preferably, the electrode connection layer is a transparent film layer arranged on the entire surface.

[0013] Furthermore, the display panel also includes a pixel defining layer, the pixel defining layer is located on one side of the substrate, the pixel defining layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, and at least part of the pixel opening is connected to the opening structure. Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the opening structure on the substrate. Preferably, the electrode connection layer includes a plurality of electrode connection portions arranged at intervals, and the orthographic projection of the pixel defining portion on the substrate covers the orthographic projection of the corresponding electrode connection portion on the substrate. Preferably, the electrode connection portion includes an opaque material. Preferably, the electrode connection portion includes at least one of a metal material and a conductive polymer.

[0014] The utility model also provides a display device, which includes the display panel as described above.

[0015] The advantages of the present application are: a display panel and a display device of the utility model block the leakage path between adjacent light-emitting structures by adding a partition structure, and at the same time conduct the first electrodes that are blocked together by setting an electrode connection layer located on the side of the first electrode layer away from the substrate, thereby preventing the organic film layers in the adjacent light-emitting structures from transmitting charges laterally while ensuring the integrity of the light-emitting circuit, avoiding crosstalk between adjacent light-emitting areas, and thus improving the picture quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 It is a top view schematic diagram of the isolation layer in the display panel in the embodiment of the present application;

[0018] Figure 2 It is Figure 1 a schematic cross-sectional structure diagram of the display panel at the AA' line in

[0019] Figure 3 It is Figure 2 an enlarged schematic diagram of the structure within the dashed box in

[0020] Figure 4 a schematic cross-sectional structure diagram of the display panel in other embodiments of the present application;

[0021] Figure 5 It is Figure 4 an enlarged schematic diagram of the structure within the dashed box in

[0022] Figure 6 a schematic cross-sectional structure diagram of the display panel in another embodiment of the present application;

[0023] Figure 7 a schematic cross-sectional structure diagram of the light extraction layer in another embodiment of the embodiment of the present application;

[0024] Figure 8 a simplified schematic cross-sectional structure diagram of the light extraction layer in other embodiments of the present application;

[0025] Figure 9 a simplified schematic cross-sectional structure diagram of the light extraction layer in other embodiments of the present application;

[0026] Figure 10 a simplified schematic cross-sectional structure diagram of the light extraction layer in other embodiments of the present application;

[0027] Figure 11 a schematic diagram of the display device in the embodiment of the present application.

[0028] The components in the figure are represented as follows:

[0029] Display panel 1; Substrate 10;

[0030] Thin film transistor 11; Pixel defining layer 20;

[0031] Pixel defining part 21; Pixel opening 22;

[0032] Partition structure 30; Opening structure 31;

[0033] First partition portion 32; Second partition portion 33;

[0034] Second electrode layer 40; Second electrode 41;

[0035] Light-emitting layer 50; Light-emitting structure 51;

[0036] First electrode layer 60; First electrode 61;

[0037] Electrode connection layer 70; Electrode connection portion 71;

[0038] Light extraction sub-portion 80; First light extraction sub-portion 81;

[0039] Second light extraction sub-portion 82; Third light extraction sub-portion 83. Detailed implementation manners

[0040] The following introduces the preferred embodiments of the present utility model with reference to the accompanying drawings of the specification, demonstrating that the present utility model can be implemented. The embodiments of the present utility model can fully introduce the present utility model to those skilled in the art, making its technical content clearer and easier to understand. The present utility model can be embodied in many different forms of embodiments, and the protection scope of the present utility model is not limited to the embodiments mentioned in the text.

[0041] In the drawings, components with the same structure are denoted by the same numerical reference signs, and components with similar structures or functions are denoted by similar numerical reference signs. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model does not limit the size and thickness of each component. To make the drawings clearer, the thickness of some components is appropriately exaggerated in the drawings.

[0042] In addition, the descriptions of the following embodiments of the present utility model refer to the attached drawings, which are used to illustrate specific embodiments in which the present utility model can be implemented. The directional terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] When some components are described as "on" another component, the component can be directly placed on the other component; there can also be an intermediate component, with the component placed on the intermediate component and the intermediate component placed on the other component. When a component is described as "mounted to" or "connected to" another component, the two can be understood as being directly "mounted" or "connected", or a component is indirectly "mounted to" or "connected to" another component through an intermediate component.

[0044] In the related art, in order to simplify the production steps of the light-emitting layer and the cathode layer and improve the production efficiency, the entire surface evaporation or the entire surface deposition method is generally used for preparation. The light-emitting layer prepared by the entire surface preparation extends from the pixel opening to cover the top surface of the pixel defining layer (i.e., the surface of the pixel defining layer facing the light-emitting layer). In the display panel prepared by this process, the organic film layer in the light-emitting layer will transfer charges horizontally, resulting in crosstalk between different light-emitting regions, and further resulting in non-compliance of the chromaticity uniformity of the display panel and poor display image quality of the low gray level of the display panel. Therefore, a process of disconnecting the connection of the light-emitting layers in adjacent pixel openings by setting isolation columns, protrusions and other structures has emerged. The inventors of the present application found that: structures such as isolation columns and protrusions will also disconnect the cathode layer provided on the light-emitting layer while disconnecting the entire surface light-emitting layer, thus easily causing the problem of cathode disconnection.

[0045] To solve the above problems, in the embodiments of the first aspect of the present application, a display panel 1 is proposed, as Figure 1 and Figure 2 shown, the display panel 1 includes a substrate 10, a partition structure 30, a light-emitting layer 50, a first electrode layer 60, and an electrode connection layer 70.

[0046] The substrate 10 can be an array substrate, which includes thin film transistors 11 (Thin Film Transistor, TFT) and an insulating film layer. The thin film transistors 11 are arranged in an array in the insulating film layer and are used to control whether the light-emitting layer 50 emits light.

[0047] Furthermore, the display panel 1 further includes a second electrode layer 40 and a pixel defining layer 20 provided thereon.

[0048] The second electrode layer 40 is disposed on the side of the light-emitting layer 50 facing the substrate 10, and includes a plurality of second electrodes 41. Adjacent second electrodes 41 are insulated from each other. A connection end extends from the bottom surface of each second electrode 41 (i.e., the surface of the second electrode 41 facing the substrate 10), and the connection end passes through the insulating film layer in the substrate 10 and is electrically connected to the source and drain electrodes of the corresponding thin film transistor 11.

[0049] The pixel defining layer 20 is disposed on a side of the second electrode layer 40 close to the light emitting layer 50. The pixel defining layer 20 includes a pixel defining portion 21 and a pixel opening 22 formed by enclosing the pixel defining portion 21. At least a part of the second electrode 41 is exposed through the pixel opening 22, that is, the orthographic projection of the pixel opening 22 on the substrate 10 and the orthographic projection of the second electrode 41 on the substrate 10 at least partially overlap, so that at least a part of the top surface of the second electrode 41 (i.e., the surface of the second electrode 41 away from the substrate 10) is exposed in the pixel opening 22.

[0050] The partition structure 30 is disposed on a side of the pixel defining layer 20 away from the substrate 10. The partition structure 30 encloses a plurality of opening structures 31. The orthographic projection of the plurality of partition structures 30 on the substrate 10 is a mesh structure, which is used to partition the light emitting layer 50 and the second electrode layer 40.

[0051] At least a part of the opening structure 31 communicates with the pixel opening 22. The orthographic projection of the pixel opening 22 on the substrate 10 is located within the orthographic projection range of the corresponding opening structure 31 on the substrate 10.

[0052] The light emitting layer 50 is disposed on a side of the pixel defining layer 20 away from the substrate 10, and includes a plurality of light emitting structures 51. Further, one light emitting structure 51 can be correspondingly disposed in each opening structure 31. The light emitting layer 50 in adjacent opening structures 31 is disconnected by the partition of the partition structure 30 to form a plurality of light emitting structures 51. The light emitting structure 51 covers the exposed surface of the second electrode 41 in the corresponding pixel opening 22 and is electrically connected to the corresponding thin film transistor 11 through the second electrode 41. Each light emitting structure 51 in the light emitting layer 50 can be electrically connected to at least one thin film transistor 11 in the substrate 10 through the corresponding second electrode 41, and realizes independent light emission through the control of the thin film transistor 11.

[0053] The first electrode layer 60 is disposed on a side of the light emitting layer away from the substrate 10. The first electrode layer 60 includes a plurality of first electrodes 61, and the first electrodes 61 corresponding to adjacent light emitting structures 51 are partitioned by the partition structure 30. Specifically, the first electrode layer 60 is disposed on a surface of the light emitting layer 50 away from the substrate 10, and a first electrode 61 is correspondingly disposed on a surface of each light emitting structure 51 away from the second electrode 41. In this embodiment, the first electrode layer 60 is a cathode layer, the second electrode layer 40 is an anode layer, the first electrode 61 is the cathode, and the second electrode 41 is the anode. After the first electrode 61 and the second electrode 41 are connected to the circuit, electrons and holes are respectively input into the light emitting layer 50. The electrons and holes are combined in the light emitting layer 50 to excite the light emitting layer 50 to generate light, thereby realizing independent light emission.

[0054] The electrode connection layer 70 is disposed on a side of the first electrode layer 60 away from the substrate 10, and adjacent first electrodes 41 are electrically connected through the electrode connection layer 79. As Figure 2and Figure 3 As shown in Figure 3 , the electrode connection layer 70 includes a plurality of electrode connection portions 71 arranged at intervals. The orthographic projection of the pixel definition portion 21 on the substrate 10 covers the orthographic projection of the corresponding electrode connection portion 71 on the substrate 10. The electrode connection portion 71 covers at least a part of the top surface of the partition structure 30 (i.e., the surface of the partition structure facing away from the light-emitting layer 50) and at least a part of the side surface of the partition structure 30, and extends from one side of the partition structure 30 to the edge of the first electrode 61 to achieve electrical connection with the edge of the first electrode 61. At the same time, adjacent first electrodes 61 are electrically connected through the electrode connection portion 71, thereby solving the problem of open circuit of the first electrode 61 in the first electrode layer 60 caused by the partition of the partition structure 30. Further, the boundary of the orthographic projection of the first electrode 61 on the substrate 10 coincides with the boundary of the orthographic projection of the partition structure 30 on the substrate 10, that is, the distance between adjacent two first electrodes 61 is equal to the maximum width of the partition structure 30, maximizing the reduction of the distance between adjacent two first electrodes 61, thereby reducing the difficulty of electrical connection between the electrode connection layer 70 and the first electrode 61.

[0055] In some embodiments of the present application, as Figure 4 and Figure 5 shown, the electrode connection layer 70 can also cover the top surface of the partition structure 30 and all side surfaces of the partition structure 30 by adjusting the direction of material spraying during its preparation, so as to fill the gap between the light-emitting structure 51 and the first electrode 61 and the side surface of the partition structure 30, increase the contact area between the electrode connection layer 70 and the panel, and improve the adhesion between the electrode connection layer 70 and the isolation structure 30 and the first electrode layer 70, thereby reducing the risk of peeling and falling off of the electrode connection layer 70.

[0056] Optionally, the electrode connection layer 70 includes an opaque conductive material, and the opaque conductive material includes at least one of a metal material and a conductive polymer. Among them, the metal material can be selected from tin, silver, aluminum, copper, tungsten, nickel, etc., and the conductive polymer can be selected from polyacetylene, polythiophene, polypyrrole, polyaniline, etc. The electrode connection layer 70 can be prepared by selecting one of evaporation coating process, inkjet printing process, chemical vapor deposition (CVD) or physical vapor deposition (PVD) and other processes according to the selected preparation materials.

[0057] In the embodiment of the present application, a partition structure 30 is added to the display panel 1 to disconnect the light-emitting layer 50 in adjacent opening structures 31, so as to form a plurality of independent light-emitting structures 51, thereby preventing crosstalk between adjacent light-emitting structures 51, and further improving the chromaticity uniformity of the display panel 1. At the same time, an electrode connection layer 70 is provided on the side of the partition structure 30 facing away from the substrate 10, and adjacent first electrodes 61 are electrically connected through the electrode connection layer 70, thereby solving the open-circuit problem generated by the first electrode layer 60 under the influence of the partition structure 30 and ensuring the stability of the circuit.

[0058] At the same time, the electrode connection layer 70 in the embodiment of the present application is prepared on the side of the first electrode layer 60 facing away from the substrate 10. Compared with being prepared inside the substrate 10, the preparation method of the electrode connection layer 70 in the embodiment of the present application is simpler, without the need to additionally provide a via structure to realize the electrical connection of adjacent first electrodes 61. It is also more convenient to repair after problems occur in the circuit of the first electrode layer, and the space of the via can be saved to improve the resolution of the display panel 1, thereby enhancing the display effect of the display panel.

[0059] When preparing the light-emitting layer 50 and the first electrode layer 60, some light-emitting materials and conductive materials will accumulate on the top surface of the isolation structure 30. To prevent the light-emitting structure 51 from making a lateral connection with other adjacent light-emitting structures 51 through the light-emitting materials accumulated on the partition structure 30, the sum of the thicknesses of the light-emitting layer 50 and the first electrode layer 60 is less than the thickness of the partition structure 30, eliminating the possibility of the light-emitting materials accumulated on the partition structure 30 coming into contact with adjacent light-emitting structures 51, thereby further preventing lateral connection between adjacent light-emitting structures 51.

[0060] Such as Figure 2As shown, the partition structure 30 includes a first partition portion 32 and a second partition portion 33. The second partition portion 33 is disposed on a side of the first partition portion 32 away from the substrate 10, and a front projection of the first partition portion 32 on the substrate 10 is within a range of a front projection of the second partition portion 33 on the substrate 10. The first partition portion 32 and the second partition portion 33 may be integrally formed or separately provided. Specifically, a width of a bottom surface of the first partition portion 32 (i.e., a surface of the first partition portion 32 close to the pixel defining layer 20) is smaller than a width of a bottom surface of the second partition portion 33 (i.e., a bottom surface of the second partition portion 33 close to the pixel defining layer 20), so as to form the partition structure 30 with a wider upper part and a narrower lower part, such that the second partition portion 33 can completely cover the first partition portion 32. Further, a width of a bottom surface of the opening structure 31 (i.e., a surface of the opening structure 31 close to the pixel defining layer 20) is larger than a width of a top end thereof (i.e., an end of the opening structure 31 away from the pixel defining layer 20). When preparing the light-emitting layer 50, due to the shielding of the second partition portion 33, the light-emitting material will not fall on a side surface of the partition structure 30, thereby preventing the phenomenon that the light-emitting material climbs (i.e., the light-emitting material covers the side surface of the partition structure 30). Meanwhile, a gap is generated between the light-emitting structure 51 and the first electrode 61 and the partition structure 30, further reducing the possibility of lateral connection between adjacent light-emitting structures 51. Optionally, a height of the partition structure 30 is 0.2 - 2 micrometers, and a bottom surface width of the partition structure 30 is 0.5 - 8 micrometers. Preferably, the height of the partition structure 30 may be 1 micrometer or 1.5 micrometers, so as to ensure that the light-emitting layer 50 can be partitioned. Preferably, the bottom surface width of the partition structure 30 may be 0.6 micrometer or 1 micrometer, so as not to affect the resolution of the display panel 1 while ensuring the stability of the partition structure. Further, the partition structure 30 is an inverted trapezoidal structure or a T-shaped structure.

[0061] The partition structure 30 includes at least one of an organic material and an inorganic material. Specifically, the partition structure 30 can be an inorganic film layer arranged in multiple layers, or an organic film layer and an inorganic film layer arranged in layers. Among them, the inorganic film layer can be formed by depositing at least one of inorganic materials such as metals, silicon oxide, and silicon nitride and patterning it, and the organic film layer can be formed by coating a negative photoresist and patterning it through an etching process. Further, the material of the first partition portion 32 or the second partition portion 33 includes a conductive material. The first partition portion 32 or the second partition portion 33 containing the conductive material can be electrically connected to the corresponding first electrode 61. When the electrode connection portion 71 between adjacent first electrodes 61 has an open circuit fault, it can also be electrically connected through the first partition portion 32 or the second partition portion 33, thereby ensuring the electrical connection of the first electrode layer 60 and further reducing the risk of circuit faults in the first electrode layer 60. Among them, the conductive material can be selected from elemental metals or alloys containing silver, copper, aluminum, tungsten, nickel, etc. with excellent electrical conductivity. Preferably, the first partition portion 32 and the second partition portion 33 can be prepared from the same material, thereby simplifying the preparation work of the partition structure 30.

[0062] Further, as Figures 6 to 10 shown, the electrode connection layer 70 further includes a plurality of light extraction sub - portions 80. The orthographic projection of the plurality of light extraction sub - portions 80 on the substrate 10 covers the orthographic projection of the corresponding light - emitting structure 51 on the substrate 10. One light extraction sub - portion 80 is provided on each surface of each first electrode 61 facing away from the light - emitting structure 41. Specifically, the light extraction sub - portion 80 includes a first light extraction sub - portion 81, a second light extraction sub - portion 82, and a third light extraction sub - portion 83. There are different thicknesses or different refractive indices between the first light extraction sub - portion 81, the second light extraction sub - portion 82, and the third light extraction sub - portion 83. As Figure 6 shown, the first light extraction sub - portion 81 is provided on the light - emitting structure 51 that emits red light, the second light extraction sub - portion 82 is provided on the light - emitting structure 51 that emits green light, and the third light extraction sub - portion 83 is provided on the light - emitting structure 51 that emits blue light. The thickness of the first light extraction sub - portion 81 is greater than the thickness of the second light extraction sub - portion 82, and the thickness of the second light extraction sub - portion 82 is greater than the thickness of the third light extraction sub - portion 83; or, as Figure 7As shown, the first light extraction sub - part 81, the second light extraction sub - part 82, and the third light extraction sub - part 83 have the same thickness but different refractive indices: the refractive index of the first light extraction sub - part 81 disposed on the red light - emitting structure 51 is less than that of the second light extraction sub - part 82 disposed on the green light - emitting structure 51, and the refractive index of the second light extraction sub - part 83 disposed on the blue light - emitting structure 51 is less than that of the second light extraction sub - part 82 disposed on the green light - emitting structure 51. Since the light extraction efficiencies between the red light - emitting structure 51, the green light - emitting structure 51, and the blue light - emitting structure 51 are different, by setting light extraction sub - parts 80 with different thicknesses or different refractive indices, the gap in light extraction rates between different light - emitting structures 51 is narrowed, thereby weakening the display difference between different light - emitting structures 51 and improving the display effect of the display panel 1.

[0063] In some embodiments of the present application, as Figure 8 shown, on one surface of each first electrode 61 facing away from the light - emitting structure 41, a plurality of spaced - apart light extraction sub - parts 80 are provided, and the densities of the light extraction sub - parts 80 provided on the sides of different light - emitting structures 51 facing away from the substrate 10 are different. Specifically, the density of the light extraction sub - parts 80 provided above the light - emitting structure 51 that emits red light is less than the density of the light extraction sub - parts 80 provided above the light - emitting structure 51 that emits green light, and the density of the light extraction sub - parts 80 provided above the light - emitting structure 51 that emits blue light is less than the density of the light extraction sub - parts 80 provided above the light - emitting structure 51 that emits green light. In this embodiment, the gap in light extraction rates between different light - emitting structures 51 is narrowed by setting light extraction sub - parts 80 with different densities, thereby weakening the display difference between different light - emitting structures 51 and improving the display effect of the display panel 1.

[0064] In some embodiments of the present application, at least two light extraction sub - parts 80 are provided on one surface of each first electrode 61 facing away from the light - emitting structure 41. Specifically, the light extraction sub - part 80 includes a first light extraction sub - part 81 and a second light extraction sub - part 82 arranged side - by - side in the same layer, and there are different thicknesses or different refractive indices between the first light extraction sub - part 81 and the second light extraction sub - part 82. As Figure 9 shown, the first light extraction sub - part 81 and the second light extraction sub - part 82 may have the same thickness but different refractive indices; or, as Figure 10 shown, the first light extraction layer unit 211 and the second light extraction layer unit 212 may have different thicknesses and the same refractive index. By providing at least two light extraction sub - parts 80 with different thicknesses or different refractive indices on the same light - emitting structure 51, the brightness - viewing angle characteristics of the light - emitting structure 51 can be improved, and further, the brightness - viewing angle characteristics of the display panel 1 can be improved.

[0065] Optionally, the thickness of the light extraction sub - part 80 is 40 - 80 nanometers, and the refractive index of the light extraction sub - part 80 is 1.8 - 2.2. Preferably, the thickness of the light extraction sub - part 80 can be 75 nanometers, 65 nanometers, 55 nanometers or 50 nanometers, and the refractive index of the light extraction sub - part 80 can be 2.1 or 1.9.

[0066] Optionally, the light extraction sub - part 80 includes a transparent conductive material, and the transparent conductive material includes a conductive oxide. Among them, the transparent conductive material can be at least one of materials such as indium tin oxide, gallium oxide, titanium dioxide, etc. Further, both the electrode connection part 71 and the light extraction sub - part 80 include a transparent conductive material, so that the electrode connection layer 70 is a transparent film layer arranged as a whole surface, thereby reducing the influence of the electrode connection part 71 on the emitted light, further increasing the light extraction rate of the display panel, reducing light loss, and improving the display brightness.

[0067] In the display panel 1 provided in this embodiment, compared with the display panel provided in the first - aspect embodiment, a light extraction sub - part is added in the electrode connection layer, and the light extraction efficiency of each light - emitting structure 51 is improved through the light extraction sub - part. Also, by setting the light extraction sub - part 80 with different thicknesses, different refractive indexes or different densities, the display difference between different light - emitting structures 51 is weakened, thereby improving the brightness uniformity of the display panel 1.

[0068] As Figure 11 shown, an embodiment of the present application provides a display device 100. The display device 100 can be an OLED (Organic Light - Emitting Diode) display device, and it includes the display panel 1 provided in any of the above - mentioned embodiments. The display device 100 can be any display device with a display function, such as a mobile phone, a laptop computer, a tablet computer, etc.

[0069] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and the features in this document can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A display panel, characterized in that, include: substrate; A partition structure is provided on one side of the substrate, and the partition structure is enclosed to form an opening structure; a light-emitting layer, comprising a plurality of light-emitting structures separated by the partition structure, wherein the light-emitting structures are located in the opening structure; A first electrode layer, disposed on a side of the light-emitting layer away from the substrate, the first electrode layer comprising a plurality of first electrodes, wherein the first electrodes corresponding to adjacent light-emitting structures are separated by the partition structure; The electrode connection layer is arranged on a side of the first electrode layer away from the substrate, and adjacent first electrodes are electrically connected via the electrode connection layer.

2. The display panel according to claim 1, wherein The electrode connection layer covers at least a portion of the top surface of the partition structure and at least a portion of the side surfaces of the partition structure.

3. The display panel according to claim 2, wherein The electrode connection layer covers the top surface of the partition structure and the side surfaces of the partition structure.

4. The display panel according to claim 1, characterized in that, The display panel further includes a pixel defining layer, which is located on one side of the substrate. The pixel defining layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, and at least part of the pixel opening is connected to the opening structure.

5. The display panel according to claim 4, wherein The orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the corresponding opening structure on the substrate.

6. The display panel according to claim 4, wherein The electrode connection layer includes a plurality of electrode connection portions that are spaced apart from each other, and the orthographic projection of the pixel defining portion on the substrate covers the orthographic projection of the corresponding electrode connection portion on the substrate.

7. The display panel according to claim 6, wherein, The electrode connecting portion includes a light-proof material.

8. The display panel according to claim 6, wherein The electrode connection portion includes at least one of a metal material and a conductive polymer.

9. The display panel according to claim 1, wherein The electrode connection layer includes a plurality of light extraction sub-portions, and the orthographic projections of the plurality of light extraction sub-portions on the substrate cover the orthographic projections of the corresponding light emitting structures on the substrate; The light extraction sub-portion includes a first light extraction sub-portion and a second light extraction sub-portion which are arranged in parallel in the same layer, and the first light extraction sub-portion and the second light extraction sub-portion have different thicknesses or different refractive indices.

10. The display panel according to claim 9, wherein The light extraction sub-section includes a conductive oxide.

11. The display panel according to claim 9, wherein The electrode connection layer is a transparent film layer disposed on the entire surface.

12. The display panel according to claim 1, wherein The partition structure comprises at least a first partition portion and a second partition portion, wherein the second partition portion is located on a side of the first partition portion away from the substrate, and an orthographic projection of the first partition portion on the substrate is located within an orthographic projection of the second partition portion on the substrate; The first partition part and the second partition part are integrally formed, or the first partition part and the second partition part are separately provided.

13. The display panel according to claim 12, wherein The partition structure is in an inverted trapezoidal shape or a T-shape.

14. The display panel according to claim 12, characterized in that, The partition structure includes a plurality of inorganic film layers stacked together, or the partition structure includes an organic film layer and an inorganic film layer stacked together.

15. The display panel according to claim 12, wherein The first partition portion and / or the second partition portion include a conductive material, and the first partition portion and / or the second partition portion are electrically connected to the corresponding first electrode.

16. The display panel according to claim 12, wherein, The height of the partition structure is 0.2-2 microns.

17. The display panel according to claim 12, wherein The bottom surface width of the partition structure is 0.5-8 microns.

18. The display panel according to claim 12, wherein The orthographic projections of the plurality of partition structures on the substrate form a mesh structure.

19. A display panel, characterized in that, include: substrate; A partition structure is provided on one side of the substrate, and the partition structure is enclosed to form an opening structure; The light-emitting layer includes a plurality of light-emitting structures separated by the partition structure, and the light-emitting structures are located within the opening structure; The first electrode layer is disposed on a side of the light-emitting layer facing away from the substrate. The first electrode layer includes a plurality of first electrodes, and the first electrodes corresponding to adjacent light-emitting structures are separated by the partition structure; The electrode connection layer is disposed on a side of the first electrode layer facing away from the substrate. The electrode connection layer includes a plurality of electrode connection portions and a plurality of light extraction sub-portions. Adjacent first electrodes are electrically connected through the corresponding electrode connection portions, and the positive projections of the plurality of light extraction sub-portions on the substrate cover the positive projections of the corresponding light-emitting structures on the substrate.

20. The display panel according to claim 19, wherein The light extraction sub-portion includes a first light extraction sub-portion and a second light extraction sub-portion arranged side by side in the same layer, and the first light extraction sub-portion and the second light extraction sub-portion have different thicknesses or different refractive indices.

21. The display panel according to claim 20, characterized in that, The light extraction sub-portion includes a conductive oxide.

22. The display panel according to claim 20, wherein, The electrode connection layer is a transparent film layer provided as a whole surface.

23. The display panel according to claim 19, wherein, The display panel further includes a pixel defining layer located on one side of the substrate. The pixel defining layer includes pixel defining portions and pixel openings formed by enclosing the pixel defining portions. At least part of the pixel openings communicate with the opening structure.

24. The display panel according to claim 23, wherein The positive projection of the pixel opening on the substrate is located within the positive projection of the opening structure on the substrate.

25. The display panel according to claim 23, characterized in that, The electrode connection layer includes a plurality of electrode connection portions arranged at intervals, and the positive projection of the pixel defining portion on the substrate covers the positive projection of the corresponding electrode connection portion on the substrate.

26. The display panel according to claim 23, wherein The electrode connection portion includes an opaque material.

27. The display panel according to claim 23, wherein The electrode connection portion includes at least one of a metal material and a conductive polymer.

28. A display device, characterized in that, A display panel including any one of claims 1-27.

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