Display panel, display device, and manufacturing method of display panel

Abstract

To optimize a manufacturing process of a display panel.SOLUTION: A display panel includes: a substrate 1; a separation structure 3; a light emission function layer; and a plurality of first electrodes. The separation structure surrounds a plurality of first opens 331 and a plurality of second opens 332, and includes a first part 31 and a second part 32 that are provided so as to be laminated. The light emission function layer includes a plurality of first light emission parts 41 and a plurality of second light emission parts 42. At least one part of each first light emission part is provided to each first open. At least one part of each second light emission part is provided into each second open. An edge of a first electrode 21 is overlapped and connected to the first part. The shortest connection wire of an edge of the first electrode part and a first edge is a first connection wire. The shortest connection wire of the edge of the second electrode part and a second edge is a second connection wire. An inclined angle θ2 of the second connection wire and a flat surface onto which the substrate is positioned is smaller than an inclined angle θ1 of the first connection wire and the flat surface onto which the substrate.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] Display panels based on technologies such as organic light emitting diode (OLED) and light emitting diode (LED) have advantages such as high image quality, power saving, thinness, and wide range of applications, and are widely used in various consumer electronic products such as mobile phones, televisions, notebook computers, and desktop computers, and have become the mainstream in display devices. However, the current manufacturing process of display panels needs to be improved. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application provide a display panel, a display device and a manufacturing method for a display panel to improve the technical problems of the related manufacturing process of the display panel. [Means for solving the problem]

[0004] An embodiment of a first aspect of the present application provides a display panel, the display panel comprising: The light-emitting device includes a substrate, an isolation structure, a light-emitting functional layer, and a plurality of first electrodes; the isolation structure is provided on one side of the substrate, surrounds a plurality of first openings and a plurality of second openings, and includes a first portion and a second portion that are stacked on top of each other, the first portion is provided on a side of the second portion closer to the substrate, an orthogonal projection of the first portion on the substrate is located within an orthogonal projection of the second portion on the substrate, the second portion includes a blocking edge, an orthogonal projection of the blocking edge on the substrate is located at an edge of the orthogonal projection of the second portion on the substrate, and the blocking edge includes a first edge that defines the first opening and a second edge that defines the second opening; the light-emitting functional layer includes a plurality of first light-emitting sections and a plurality of second light-emitting sections, at least a portion of the first light-emitting sections is provided within a first opening, at least a portion of the second light-emitting sections is provided within a second opening, and the wavelength of the light wave emitted by the first light-emitting section is different from the wavelength of the light wave emitted by the second light-emitting section; The multiple first electrodes are located on the side of the light-emitting functional layer away from the substrate, and an edge of the first electrode is overlapped and connected to a side surface of the first portion facing the limiting opening, the multiple first electrodes include a first electrode portion provided on one side of the first light-emitting portion and a second electrode portion provided on one side of the second light-emitting portion, the shortest connecting line between the edge of the first electrode portion and the first edge is a first connecting line, the shortest connecting line between the edge of the second electrode portion and the second edge is a second connecting line, and the included angle between the second connecting line and the plane on which the substrate is located is smaller than the included angle between the first connecting line and the plane on which the substrate is located.

[0005] According to an embodiment of the first aspect of the present application, the plurality of limiting openings further includes a third opening, the light-emitting functional layer further includes a plurality of third light-emitting units, at least a portion of the third light-emitting units is disposed within the third opening, and the blocking edge further includes a third edge defining the third opening; The plurality of first electrodes include a third electrode portion provided on one side of the third light-emitting portion, a shortest connecting line between an edge of the third electrode portion and the third edge is a third connecting line, and an included angle between the third connecting line and a plane on which the substrate is located is smaller than an included angle between the second connecting line and the plane on which the substrate is located.

[0006] According to an embodiment of the first aspect of the present application, the blocking edge includes a first edge defining a first opening and a second edge defining a second opening, a minimum distance from an orthogonal projection of the first edge on the substrate to an orthogonal projection of the first portion on the substrate is H1, a minimum distance from an orthogonal projection of the second edge on the substrate to an orthogonal projection of the first portion on the substrate is H2, and H1 <H2である。

[0007] According to an embodiment of the first aspect of the present application, the second portion has a cross section that is trapezoidal along a direction perpendicular to the plane in which the substrate lies.

[0008] According to an embodiment of the first aspect of the present application, an area of ​​an orthogonal projection on the substrate of a surface of the second portion facing away from the substrate is smaller than an area of ​​an orthogonal projection on the substrate of a surface of the second portion facing closer to the substrate.

[0009] According to an embodiment of the first aspect of the present application, the blocking edge is a periphery of a surface of the second part adjacent to the substrate.

[0010] According to an embodiment of the first aspect of the present application, the first portion has a cross section that is trapezoidal along a direction perpendicular to the plane in which the substrate lies.

[0011] According to an embodiment of the first aspect of the present application, an area of ​​an orthogonal projection on the substrate of a surface of the first portion facing away from the substrate is smaller than an area of ​​an orthogonal projection on the substrate of a surface of the second portion facing closer to the substrate.

[0012] According to an embodiment of the first aspect of the present application, the first portion comprises a single layer metal structure.

[0013] According to an embodiment of the first aspect of the present application, the first portion comprises a multi-layer metal structure, and an edge of the first electrode is overlap-connected to the metal structure.

[0014] According to an embodiment of the first aspect of the present application, the first portion comprises aluminium.

[0015] According to an embodiment of the first aspect of the present application, the first portion comprises a first subsection and a second subsection arranged in a stacked manner, the second subsection being arranged on a side of the first subsection facing away from the substrate, the first subsection comprising molybdenum and / or titanium and the second subsection comprising aluminium.

[0016] According to an embodiment of the first aspect of the present application, the display panel further comprises a pixel defining layer provided between the substrate and the isolation structure, the pixel defining layer comprising a pixel aperture, the orthogonal projection of the pixel aperture on the substrate being located within a range of the orthogonal projection of the limiting aperture on the substrate.

[0017] According to an embodiment of the first aspect of the present application, the isolation structure is provided on a side of the pixel definition layer facing away from the substrate, and the light-emitting functional layer is provided at least partially within the pixel aperture.

[0018] An embodiment of a second aspect of the present application provides a method for manufacturing a display panel, comprising: The method includes the steps of providing a substrate; forming an isolation structure on one side of the substrate; and forming a light-emitting functional layer and a first electrode; the isolation structure surrounds a plurality of limiting openings, the limiting openings including a first opening and a second opening, the isolation structure includes a first portion and a second portion stacked together, the first portion is provided on one side of the second portion close to the substrate, the orthogonal projection of the first portion on the substrate is located within the orthogonal projection of the second portion on the substrate, the second portion includes a blocking edge, the orthogonal projection of the blocking edge on the substrate is located at an edge of the orthogonal projection of the second portion on the substrate, the blocking edge includes a first edge defining the first openings and a second edge defining the second openings; the light-emitting functional layer includes a first light-emitting portion and a second light-emitting portion, at least a portion of the first light-emitting portion is provided within the first opening, and at least a portion of the second light-emitting portion is provided within the second opening, the multiple first electrodes include a first electrode portion and a second electrode portion provided on one side of the second light-emitting portion, the shortest connecting line between an edge of the first electrode portion and the first edge is a first connecting line, the shortest connecting line between an edge of the second electrode portion and the second edge is a second connecting line, and the included angle between the second connecting line and a plane on which the substrate is located is smaller than the included angle between the first connecting line and the plane on which the substrate is located.

[0019] According to an embodiment of the second aspect of the present application, the step of forming the light-emitting functional layer and the first electrode includes: placing a first luminescent material in each limiting opening, and depositing a first conductive material at a first deposition angle, the first conductive material being laminated on one side of the first luminescent material; performing a removal process on the first light-emitting material and the conductive material in the second opening to expose the second electrode through the limited opening, the second electrode being located on a side of the light-emitting functional layer closer to the substrate; placing a second luminescent material in each limiting opening and depositing a second conductive material at a second deposition angle, the second conductive material being stacked on one side of the second luminescent material, the first deposition angle being smaller than the second deposition angle; performing a removal process on the second light emitting material and the second conductive material in the first opening.

[0020] An embodiment of a third aspect of the present application provides a display device including a display panel of any of the above embodiments, or a display panel manufactured by the method of any of the above embodiments.

[0021] According to the display panel, display device, and manufacturing method of the display panel according to the embodiment of the present application, by providing an isolation structure, it is possible to manufacture the light emitting part and the first electrode, at least a part of which is located within the limiting aperture, without using a metal mask, thereby eliminating the process and cost of the metal mask, optimizing the manufacturing process of the display panel, improving the production efficiency of the display panel, and reducing the production cost of the display panel. The angle between the second connecting line and the plane on which the substrate is located is made smaller than the angle between the first connecting line and the plane on which the substrate is located, thereby ensuring that the edge of the first electrode formed by deposition is overlapped and connected to the first part. [Brief description of the drawings]

[0022] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the drawings, in which the same or similar reference numerals represent the same or similar features and the drawings are not drawn to scale.

[0023] [Figure 1] FIG. 2 is a partial plan view of a display panel according to an embodiment of the present application. [Diagram 2] FIG. 2 is a partial cross-sectional view of a display panel according to an embodiment of the present application. [Diagram 3] FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Figure 4] FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Diagram 5] FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Figure 6]FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Figure 7] FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Figure 8] FIG. 11 is a partial cross-sectional view of a display panel according to another embodiment of the present application. [Figure 9] 3A to 3C are diagrams illustrating steps in a manufacturing method of a display panel according to an embodiment of the present application. [Figure 10] 3A to 3C are diagrams illustrating steps in a manufacturing method of a display panel according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The features and exemplary embodiments of each aspect of the present application will be described in detail below. In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application will be described in more detail below with reference to the drawings and specific embodiments. It can be understood that the specific embodiments described herein are merely configured to explain the present application, and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely provided to illustrate the present application and to better understand the present application.

[0025] It should be noted that in this specification, relational terms such as first and second are merely intended to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such an actual relationship or order exists between these entities or operations. Also, the terms "comprise", "comprises", or any other variations thereof are intended to cover a non-exclusive inclusion. A process, method, article, or device that includes a set of elements not only includes those elements, but also includes other elements not expressly listed, or includes elements inherent to such process, method, article, or device. In the absence of more limitations, an element limited by the phrase "comprises" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0026] As will be understood, when describing the structure of a component, a layer or region being referred to as being "on" or "above" another layer or region may refer to being directly on top of the other layer or region, or may include other layers or regions between the other layer or region, and when the component is inverted, the layer or region would be "below" or "under" the other layer or region.

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above problems, the embodiments of the present application provide a display panel and a display device.

[0028] Embodiments of the present application provide a display panel, a manufacturing method for a display panel, and a display device. Hereinafter, each embodiment of the display panel, the manufacturing method for a display panel, and the display device will be described with reference to FIGS. 1 to 10. FIG.

[0029] 1 and 2, the display panel includes a substrate 1, an isolation structure 3, a light-emitting functional layer, and a plurality of first electrodes 2; the isolation structure 3 is disposed on one side of the substrate 1, the isolation structure 3 surrounds a plurality of limiting openings 33, the plurality of limiting openings 33 include a first opening 331 and a second opening 332, the isolation structure 3 includes a first portion 31 and a second portion 32 disposed in a stacked manner, the first portion 31 is disposed on a side closer to the substrate 1 than the second portion 32, the orthogonal projection of the first portion 31 on the substrate 1 is located within the orthogonal projection of the second portion 32 on the substrate 1, the second portion 32 includes a blocking edge 321, the orthogonal projection of the blocking edge 321 on the substrate 1 is located at the edge of the orthogonal projection of the second portion 32 on the substrate 1, the blocking edge 321 includes a first edge 322 that defines the first opening 331 and a second edge 323 that defines the second opening 332; the light-emitting functional layer is overlapped with a plurality of first light-emitting portions 41. and a number of second light-emitting sections 42, at least a portion of the first light-emitting section 41 being provided within the first opening 331, at least a portion of the second light-emitting section 42 being provided within the second opening 332, the wavelength of the light wave emitted by the first light-emitting section 41 being different from the wavelength of the light wave emitted by the second light-emitting section 42; the first electrode 2 being located on a side of the light-emitting functional layer away from the substrate 1, an edge of the first electrode 2 being overlapped and connected to a side surface of the first section 31 facing the limiting opening 33, The first electrode 2 includes a first electrode portion 21 provided on one side of the first light-emitting portion 41 and a second electrode portion 22 provided on one side of the second light-emitting portion 42, the shortest connecting line between the edge of the first electrode portion 21 and the first edge 322 is a first connecting line, the shortest connecting line between the edge of the second electrode portion 22 and the second edge 323 is a second connecting line, and the included angle θ2 between the second connecting line and the plane on which the substrate 1 is located is smaller than the included angle θ1 between the first connecting line and the plane on which the substrate 1 is located. Here, the shortest connecting line between the edge of the first electrode portion 21 and the first edge 322 refers to the connecting line between the edge of the first electrode portion 21 and the corresponding first edge 322 in a cross-sectional view perpendicular to the plane on which the substrate 1 is located. The shortest connection line between the edge of the second electrode portion 22 and the second edge 323 refers to the connection line between the edge of the second electrode portion 22 and the corresponding second edge 323 in a cross-sectional view perpendicular to the plane on which the substrate 1 is located.

[0030] The embodiment of the present application provides a display panel based on Organic Light Emitting Diode (OLED) technology. In the display panel according to the embodiment of the present application, the substrate 1 can not only provide a support force for the isolation structure 3, but also provide an electric signal to the first electrode 2. The substrate 1 can be installed in various ways. In some embodiments, the substrate 1 may include a base 11 and an array substrate 13 disposed on the base 11. The array substrate 13 may include a pixel driving circuit, a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer, which are stacked together. Exemplarily, the pixel driving circuit disposed on the array substrate 13 includes a transistor and a storage capacitor. The transistor includes an active layer 131, a gate electrode 132, a drain electrode 133, and a source electrode 137. The storage capacitor includes a first plate 135 and a second plate 136. As an example, the gate electrode 132 and the first plate 135 may be located on a third conductive layer, the second plate 136 may be located on a second conductive layer, and the drain electrode 133 and the source electrode 137 may be located on the first conductive layer.

[0031] As can be understood by those skilled in the art, in order to realize that the display panel emits light of different colors, it is necessary to manufacture light emitting units for emitting different colors, and the isolation structure 3 is spaced between each light emitting unit. The light emitting units of different colors can be manufactured in stages, i.e., firstly, a plurality of first light emitting units 41 for emitting light of a first color are manufactured, and then a plurality of second light emitting units 42 for emitting light of a second color are manufactured, thereby completing the manufacture of the light emitting units for emitting light of different colors by analogy. The light emitting units for emitting different colors in this application include the first light emitting unit 41 and the second light emitting unit 42, where "first" and "second" are used only for distinction, and do not necessarily require or imply that the light emitting functional layer of the technical solution of this application is composed of two light emitting units of the first light emitting unit 41 and the second light emitting unit 42, and the technical solution of this application may include light emitting units for emitting a third, fourth, fifth, etc. type of color. It can be understood that the wavelengths of the light waves emitted by the first light-emitting unit 41 and the second light-emitting unit 42 are different, and the colors of the first colored light emitted by the first light-emitting unit 41 and the second colored light emitted by the second light-emitting unit 42 are different.

[0032] The isolation structure 3 is formed surrounding the limiting opening 33 so as to limit the installation range of the light-emitting functional layer, and the isolation structure 3 includes a first portion 31 and a second portion 32 provided by stacking, and the orthogonal projection of the first portion 31 on the substrate 1 is located within the orthogonal projection of the second portion 32 on the substrate 1, and the cross-sectional area of ​​one end of the isolation structure 3 away from the substrate 1 is large, and the cross-sectional area of ​​one end of the isolation structure 3 close to the substrate 1 is small. The second portion 32 completely shields the first portion 31 along the direction from the isolation structure 3 to the substrate 1. The number of the limiting openings 33 may correspond one-to-one to the number of the light-emitting portions, and when the light-emitting functional layer has multiple types of light-emitting portions, the multiple limiting openings 33 may include openings that correspond one-to-one to each type of light-emitting portion. The shapes and dimensions of the first opening 331 and the second opening 332 may or may not be the same.

[0033] When manufacturing the light-emitting section, the light-emitting material A for manufacturing the first light-emitting section 41 may be coated on the isolation structure 3 based on a deposition technique. Since the second section 32 shields the first section 31, the light-emitting material A for manufacturing the first light-emitting section 41 has a large step at the blocking edge 321 of the second section 32, making it difficult for the light-emitting material A that has fallen into the limiting opening 33 and the light-emitting material A that has fallen onto the second section 32 to be connected, and is broken to form light-emitting material A that is spaced apart in the adjacent limiting openings 33. If necessary, the light-emitting material A that has fallen onto the second section 32 and the light-emitting material A that has fallen into the limiting openings 33 other than the first opening 331 (for example, the light-emitting material A that has fallen into the second opening 332) can be removed. The light-emitting material B for manufacturing the second light-emitting section 42 may be coated on the isolation structure 3 based on a deposition technique. Similarly, since the second portion 32 shields the first portion 31, the luminescent material B for manufacturing the second light-emitting portion 42 has a large step at the blocking edge 321 of the second portion 32, making it difficult for the luminescent material B that has fallen into the limiting opening 33 and the luminescent material B that has fallen onto the second portion 32 to be connected, and breaks to form the luminescent material B separated from each other in the adjacent limiting opening 33. If necessary, the luminescent material B that has fallen onto the second portion 32 and the luminescent material B that has fallen onto the limiting openings 33 other than the second opening 332 (for example, the luminescent material B that has fallen onto the first opening 331) can be removed. In this manner, luminescent portions capable of emitting different colors are successively manufactured until a light-emitting functional layer having a plurality of types of luminescent portions is completed.

[0034] Therefore, compared with the related art in which a light-emitting functional layer is manufactured by mask deposition, the present application can manufacture a light-emitting part located within the limiting opening 33 without using a mask by providing the first portion 31 and the second portion 32, thereby saving the cost of manufacturing a mask. Compared to manufacturing a high-precision mask, directly manufacturing a high-precision isolation structure 3 is easier to achieve, and the manufacturing process of the display panel structure of the present application has low requirements, and the manufactured display panel has good consistency.

[0035] When manufacturing the first electrode 2, the conductive material C for manufacturing the first electrode 2 may be coated on the isolation structure 3 and the light-emitting functional layer based on deposition technology. The conductive material C for manufacturing the first electrode 2 has a large step at the cut-off edge 321, and the conductive material C that falls into the limited opening 33 and the conductive material C that falls into the second portion 32 are difficult to connect, and are broken to form the first electrodes 2 that are spaced apart. The conductive material C that falls into the second portion 32 can be removed as necessary. At least a part of the first electrode 2 is located within the limited opening 33. When the first portion 31 is at least partially conductive, the first electrode 2 can be connected to the conductive region of the first portion 31 to supply power to the first electrode 2, and at the same time, the conductive surface electrode that is fully conductive can be formed by realizing the conductivity of the adjacent first electrodes 2.

[0036] When one or more types of light-emitting parts are manufactured, it is necessary to remove unnecessary light-emitting material and conductive material in some of the limiting openings 33 before manufacturing the light-emitting parts by deposition again, and in the process, the first part 31 in contact with the removed light-emitting material and conductive material may be corroded, and the size of the first part 31 may be reduced. In the embodiment provided by the present application, the first electrodes 2 located in different light-emitting parts are formed by deposition at different deposition angles, so that the conductive material C that will later form the first electrode 2 can penetrate the second light-emitting part 42 into the limiting opening 33 and be overlapped and connected to the first part 31 with a reduced size. The manufactured display panel exhibits that the included angle θ2 between the second connecting line and the plane on which the substrate 1 is located is smaller than the included angle θ1 between the first connecting line and the plane on which the substrate 1 is located. As shown in Figure 2, dashed line L1 indicates a reference line parallel to the plane on which substrate 1 is located, and the vertices of included angles θ1 and θ2 are both connection points between the surface of first electrode 2 away from substrate 1 and first portion 31, where θ2<θ1.

[0037] For example, the luminescent material A of the first light emitting portion 41 is deposited in both the first opening 331 and the second opening 332, and the conductive material C is deposited at a first deposition angle to form a layer of conductive material C on the luminescent material A. The luminescent material A and conductive material C located in the second opening 332 are subjected to a removal process, and the first portion 31 defining the second opening 332 is partially corroded by the removal process, so that the included angle between the shortest connection line from the edge of the end of the partially corroded first portion 31 close to the substrate 1 to the blocking edge 321 and the plane on which the substrate 1 is located is reduced. The luminescent material B of the second light emitting portion 42 is deposited in the second opening 332, and the conductive material C is deposited at a second deposition angle, and the second deposition angle is larger than the first deposition angle, thereby ensuring that the conductive material C in the second opening 332 is overlapped and connected to the first portion 31.

[0038] In the technical solution of the present application, by providing the isolation structure 3, the light emitting part and the first electrode 2, at least a portion of which is located within the limiting opening 33, can be manufactured without a metal mask, thereby eliminating the process and cost of the metal mask, optimizing the manufacturing process of the display panel, improving the production efficiency of the display panel, and reducing the production cost of the display panel. The included angle θ2 between the second connecting line and the plane on which the substrate 1 is located is set smaller than the included angle θ1 between the first connecting line and the plane on which the substrate 1 is located, thereby ensuring that the edge of the first electrode 2 formed by deposition is overlapped and connected to the first portion 31.

[0039] As shown in FIG. 1, in some alternative embodiments, the isolation structures 3 extend in a lattice pattern along a first direction X and a second direction Y, and the first direction X and the second direction Y intersect.

[0040] The isolation structure 3 being lattice-shaped means that the isolation structure 3 extends in the first direction X and the second direction Y, the part extending along the first direction X and the part extending along the second direction Y cross and connect with each other to form a plurality of lattice spaces, the substrate 1 is exposed from the lattice spaces, and the second electrode 5 and the light-emitting functional layer can be located within the lattice spaces, realizing the surrounding arrangement of the isolation structure 3 with respect to the second electrode 5 and the light-emitting functional layer, that is, the second electrode 5, the light-emitting functional layer and the first electrode 2 are all separated by the isolation structure 3 in the first direction X and the second direction Y. Note that the orthogonal projection of the isolation structure 3 on the substrate may be an independent ring shape, and is not limited thereto.

[0041] Referring to Figure 3, in some embodiments, the multiple limiting openings 33 further include a third opening 333, the light-emitting functional layer further includes a multiple number of third light-emitting sections 43, at least a portion of the third light-emitting sections 43 are disposed within the third opening 333, and the blocking edge further includes a third edge 324 that defines the third opening 333.

[0042] The multiple first electrodes 2 include a third electrode unit 23 provided on one side of the third light-emitting unit 43, and the shortest connecting line between the edge of the third electrode unit 23 and the third edge 324 is a third connecting line, and the included angle θ3 between the third connecting line and the plane on which the substrate 1 is located is smaller than the included angle θ2 between the second connecting line and the plane on which the substrate 1 is located. Here, the shortest connecting line between the edge of the third electrode unit 23 and the third edge 324 refers to the connecting line between the edge of the third electrode unit 23 and the corresponding third edge 324 in a cross-sectional view perpendicular to the plane on which the substrate 1 is located. Note that the connecting lines in this application all refer to straight lines.

[0043] The wavelengths of the light waves emitted by the first light-emitting section 41, the second light-emitting section 42, and the third light-emitting section 43 are different, and the first light-emitting section 41, the second light-emitting section 42, and the third light-emitting section 43 may be a red light-emitting section that emits red light, a green light-emitting section that emits green light, and a blue light-emitting section that emits blue light, respectively. During manufacture, the first light-emitting section 41, the second light-emitting section 42, and the third light-emitting section 43 may be manufactured by sequentially evaporating, and the first electrode 2 laminated with the first light-emitting section 41, the first electrode 2 laminated with the second light-emitting section 42, and the first electrode 2 laminated with the third light-emitting section 43 are manufactured by evaporating at a gradually increasing deposition angle, so that the manufactured first electrode 2 exhibits θ3<θ2<θ1.

[0044] The first portion 31 and the second portion 32 may be an integrally molded structure, or the first portion 31 and the second portion 32 may be a layered structure manufactured by laminating the same or different materials.

[0045] For example, the first portion 31 and the second portion 32 are an integrally molded structure. When manufacturing the isolation structure 3, a material D for manufacturing the isolation structure 3 is first placed on the substrate 1, and a patterning process is performed on the material D, so that the first portion 31 and the second portion 32 for shielding the first portion 31 can be formed at the same time. In a cross-sectional structure view along the direction from the substrate 1 to the light-emitting functional layer, the cross section of the isolation structure 3 may be a trapezoid whose upper base faces the substrate 1.

[0046] 3, the first portion 31 and the second portion 32 are a layer structure manufactured by laminating. When manufacturing the isolation structure 3, a material E for manufacturing the first portion 31 is first provided on the substrate 1, a material F for manufacturing the second portion 32 is then provided on the material E for manufacturing the first portion 31, and a patterning process is then performed on the material E and the material F to form the first portion 31 and the second portion 32 that shields the first portion 31.

[0047] Referring to FIG. 4, in some embodiments, the minimum distance from the orthographic projection of the first edge 322 on the substrate 1 to the orthographic projection of the first portion 31 on the substrate 1 is H1, the minimum distance from the orthographic projection of the second edge 323 on the substrate 1 to the orthographic projection of the first portion 31 on the substrate 1 is H2, and H1 < H2.

[0048] When manufacturing the display panel, first, the first light-emitting portion 41 and the first electrode 2 located in the first opening 331 can be manufactured, and then, the second light-emitting portion 42 and the first electrode 2 located in the second opening 332 can be manufactured. When adopting the above manufacturing process, since the first light-emitting portion 41 is manufactured first, after removing the light-emitting material and the conductive material located in the second opening 332, the side surface of the first portion 31 defining the second opening 332 is partially corroded, presenting H1 < H2.

[0049] When the light-emitting functional layer includes the third light-emitting portion 43, the blocking edge 321 includes the third edge 324 defining the third opening 333, the minimum distance from the orthographic projection of the third edge 324 on the substrate 1 to the orthographic projection of the first portion 31 on the substrate 1 is H3, and H1 < H2 < H3.

[0050] Referring to FIG. 5, in some embodiments, along the direction perpendicular to the plane where the substrate 1 is located, the cross-section of the second portion 32 is trapezoidal.

[0051] Optionally, the cross-section of the second portion 32 is a trapezoid with the lower base facing the substrate 1. Thereby, the second portion 32 has a sloped surface, which is advantageous for the manufacturing material to be cut by the blocking edge 321, forming a state where part of the manufacturing material is located in the second portion 32 and part of the manufacturing material is located in the limited opening 33. Referring to FIG. 6, the cross-section of the second portion 32 is a trapezoid with the upper base facing the substrate 1. The first edge 322 and the second edge 323 are respectively located at the connection positions of the lower base and the side of the trapezoidal cross-section.

[0052] The cross section of the second portion 32 may have other structures. Referring to Fig. 7, the cross section of the second portion 32 in this embodiment is hexagonal, and the first edge 322 and the second edge 323 are located at the connection points of both sides of the hexagonal cross section.

[0053] Referring to FIG. 5, in some embodiments, the area of ​​an orthogonal projection of a surface of the second portion 32 away from the substrate 1 on the substrate 1 is smaller than the area of ​​an orthogonal projection of a surface of the second portion 32 closer to the substrate 1 on the substrate 1 .

[0054] The second portion 32 extends outward a predetermined distance relative to the first portion 31, i.e., the area of ​​the orthogonal projection of the surface of the second portion 32 away from the substrate 1 on the substrate 1 is smaller than the area of ​​the orthogonal projection of the surface of the second portion 32 closer to the substrate 1 on the substrate 1, so that the second portion 32 has an inclined slope structure and defines the pattern of the light-emitting functional layer by the second portion 32.

[0055] If the cross section of the second portion 32 is trapezoidal and the surface of the second portion 32 away from the substrate 1 is smaller than the surface of the second portion 32 closer to the substrate 1, the blocking edge 321 is the periphery of the surface of the second portion 32 closer to the substrate 1.

[0056] In some alternative embodiments, the first portion 31 may include a single layer metal structure, for example the first portion 31 may include only one layer of aluminum, with a side of the aluminum connected to the first electrode 2 .

[0057] Alternatively, according to actual needs, the first portion 31 may include a multi-layer metal structure, for example, referring to FIG. 7 , the first portion 31 may include a first subsection 311 and a second subsection 312 arranged in a stacked manner, the first subsection 311 including molybdenum and / or titanium, and the second subsection 312 including aluminum, and the first electrode 2 may be overlap-connected to at least one of the first subsection 311 and the second subsection 312, thereby ensuring that adjacent first electrodes 2 can be conductively connected via the isolation structure 3.

[0058] Optionally, the etching rate of molybdenum and titanium is low, which allows the first subsection 311 to extend outward relative to the second subsection 312, and the cross section of the first portion 31 to have a trapezoidal shape, which is easy to overlap and connect with the first electrode 2 formed by evaporation. If the first subsection 311 and the second portion 32 are both made of titanium metal, the manufacturing process can be simplified.

[0059] In some alternative embodiments, the area of ​​the orthogonal projection of the surface of the second portion 32 facing the substrate 1 on the substrate 1 is larger than the area of ​​the orthogonal projection of the surface of the first portion 31 facing away from the substrate 1 on the substrate 1. That is, the second portion 32 extends outward relative to the first portion 31 so that the second portion 32 limits the patterns of the first electrode 2 and the light-emitting functional layer. The area of ​​the second portion 32 is larger than the area of ​​the first portion 31 and is provided to completely cover the first portion 31, and at this time, the first portion 31 is recessed in a direction away from the limiting opening 33 relative to the second portion 32. During the manufacture of the second electrode 5, the second electrode 5 has a large step at the edge of the isolation structure 3 and the first portion 31 is recessed, so that the second electrode 5 is difficult to connect to the outside of the isolation structure 3, thereby forming the second electrodes 5 that are broken and separated from each other.

[0060] In some alternative embodiments, the cross section of the first portion 31 along a direction perpendicular to the plane in which the substrate 1 lies is trapezoidal.

[0061] The cross section of the first portion 31 is an isosceles trapezoid, which increases the contact area between the first electrode 2 and the first portion 31 and ensures the stability of the overlap connection when the first electrode 2 is overlap-connected to the first portion 31. When the cross section of the first portion 31 is an isosceles trapezoid, it can stably support the second portion 32, while the contact area between the first subsection 311 and the second portion 32 is reduced, which realizes that the first portion 31 is recessed from the second portion 32 in a direction away from the central axis of the limiting opening 33, and the second electrode 5 and the light-emitting functional layer are cut at the position of the isolation structure 3.

[0062] In these alternative embodiments, in the process of etching to obtain the recessed first portion 31, the second subsection 312 has a faster etching rate than the first subsection 311 and / or the second portion 32, thereby forming the recessed first portion 31. Because the etching rate of the second subsection 312 is fast, waste generated by etching is likely to enter other positions of the display panel, causing adverse effects. By arranging the orthogonal projection of the second subsection 312 on the substrate 1 within the orthogonal projection of the first subsection 311 on the substrate 1, the second subsection 312 is well supported by the first subsection 311, and the generated etching waste falls into the first subsection 311, making it easy to clean.

[0063] Optionally, the orthogonal projection of the second portion 32 on the substrate 1 overlaps with the orthogonal projection of the first subsection 311 on the substrate 1. The first subsection 311 and the second portion 32, which have the same area, can be etched using the same mask, simplifying the manufacturing process.

[0064] Referring to Figure 8, in some embodiments, the display panel further includes a pixel definition layer 6 disposed between the substrate 1 and the isolation structure 3, the pixel definition layer 6 including a pixel aperture, the orthogonal projection of the pixel aperture on the substrate 1 being located within the orthogonal projection of the limiting aperture 33 on the substrate 1.

[0065] In this embodiment, the pixel definition layer 6 is disposed on the substrate 1 and includes a pixel aperture, and at least a part of the light-emitting functional layer is disposed within the pixel aperture to realize the light-emitting display of the display panel.

[0066] The isolation structure 3 may be provided directly on the side of the pixel definition layer 6 facing away from the substrate 1 and may be supported by the pixel definition layer 6 .

[0067] In some embodiments, the orthogonal projection of the pixel opening on the substrate 1 is located within the range of the orthogonal projection of the limiting opening 33 on the substrate 1. By limiting the area of ​​the limiting opening 33 to be larger than the area of ​​the pixel opening, the influence of the isolation structure 3 on the light output viewing angle of the light emitting functional layer can be reduced.

[0068] In some embodiments, a plurality of pixel openings are distributed at intervals, and each pixel opening has a light-emitting functional layer disposed therein.

[0069] In some embodiments, the substrate 1 further includes a planarization layer 12 supporting the pixel definition layer 6, and the planarization layer 12 provides a manufacturing plane for the pixel definition layer 6 so as to facilitate manufacturing the pixel definition layer 6. The material of the planarization layer 12 may be hexamethyldisiloxane, epoxy resin, or polyimide, or may be other inorganic materials, and is not limited in this embodiment.

[0070] The isolation structure 3 of the present application may be provided directly on the planarization layer 12, and is provided as necessary, and is not limited by the present application.

[0071] In some embodiments, the display panel further includes a plurality of second electrodes 5. The plurality of second electrodes 5 may be spaced apart, and the second electrodes 5, the light-emitting functional layer, and the first electrodes 2 are stacked in order along the direction from the substrate 1 to the light-emitting functional layer. The plurality of second electrodes 5 form a plurality of point electrodes, so that different electrical signals can be input to the plurality of second electrodes 5 to control whether the light-emitting functional layer in contact with the second electrode 5 emits light and the duration of light emission.

[0072] One of the second electrode 5 and the first electrode 2 can be an anode electrode and the other can be a cathode electrode. The second electrode 5, the light-emitting functional layer, and the first electrode 2 are laminated in order and in contact with each other to realize electrical conduction between the second electrode 5, the light-emitting functional layer, and the first electrode 2. Optionally, the second electrode 5 is an anode electrode, and the first electrode 2 is a cathode electrode.

[0073] In the embodiment of the present application, an example in which the second electrode 5 is an anode and the first electrode 2 is a cathode will be described. The light-emitting functional layer may include one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer. Specifically, it can be selected according to the specific type of the light-emitting functional layer, and is not particularly limited. The electron injection layer, the electron transport layer, and the hole blocking layer may be provided between the second electrode 5 and the light-emitting material layer. The electron blocking layer, the hole transport layer, and the hole injection layer can be provided between the first electrode 2 and the light-emitting material layer.

[0074] The material of the second electrode 5 is generally a material with a high work function to improve hole injection efficiency, and may be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO) or a transparent conductive polymer (e.g. polyaniline), etc. For example, the second electrode 5 can be made of an ITO-Ag-ITO composite material, and is not particularly limited.

[0075] The material of the first electrode 2 may be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), or an alloy of the metal materials, such as a magnesium-silver alloy (Mg / Ag) or a lithium-aluminum alloy (Li / Al), but is not limited thereto in this embodiment.

[0076] In some embodiments, the display panel further includes a first packaging layer 71, which covers the side of the first electrode 2 away from the substrate 1 and contacts the side wall toward the limiting opening 33 of the isolation structure 3. The first packaging layer 71 can block water vapor and the like from entering the light-emitting functional layer, and can also avoid or reduce failure of the light-emitting functional layer due to external mechanical force, thereby improving the reliability of the display panel.

[0077] In some embodiments, the display panel further includes a second package layer 72 located on a side of the first package layer 71 away from the substrate 1, and a third package layer 73 located on a side of the second package layer 72 away from the substrate 1, where the first package layer 71, the second package layer 72 and the third package layer 73 may be inorganic and / or organic materials, and the inorganic materials may specifically use inorganic materials such as silicon nitride, silicon oxide and silicon oxynitride, and may specifically be formed using a CVD (Chemical Vapor Deposition) process. The organic materials may be made of resin or polymer organic materials, and specifically may be formed using an IJP (Inkjet printing) process. Optionally, the first package layer 71 and the third package layer 73 are inorganic materials, and the second package layer 72 is an organic material.

[0078] An embodiment of the present application further provides a method for manufacturing a display panel, including the following steps.

[0079] In S110, a substrate is provided.

[0080] In S120, an isolation structure is formed on one side of a substrate, the isolation structure surrounding a plurality of limiting apertures, the limiting apertures including a first aperture and a second aperture, the isolation structure including a first portion and a second portion stacked together, the first portion being provided on one side closer to the substrate of the second portion, the orthogonal projection of the first portion on the substrate being located within the orthogonal projection of the second portion on the substrate, the second portion including a blocking edge, the orthogonal projection of the blocking edge on the substrate being located at an edge of the orthogonal projection of the second portion on the substrate, and the blocking edge including a first edge defining the first aperture and a second edge defining the second aperture.

[0081] In S130, a light-emitting functional layer and a first electrode are formed, the light-emitting functional layer includes a plurality of first light-emitting portions and a plurality of second light-emitting portions, at least a portion of the first light-emitting portions is provided in the first opening, and at least a portion of the second light-emitting portions is provided in the second opening; the plurality of first electrodes include a first electrode portion and a second electrode portion provided on one side of the second light-emitting portion, the shortest connecting line between an edge of the first electrode portion and the first edge is a first connecting line, the shortest connecting line between an edge of the second electrode portion and the second edge is a second connecting line, and the included angle between the second connecting line and a plane on which the substrate is located is smaller than the included angle between the first connecting line and the plane on which the substrate is located.

[0082] A manufacturing method of a display panel according to an embodiment of the present invention is as follows.

[0083] In S110, the substrate can be specifically formed by processes such as coating, curing, and film formation. The substrate can be a hard substrate, such as a glass substrate, or a flexible substrate, and its material can be polyimide, polystyrene, polyethylene terephthalate, polyparaxylylene, polyethersulfone, or polyethylene naphthalate. The substrate is mainly used to support a device provided thereon.

[0084] In S120, to form an isolation structure, a first partial material layer 310 and a second partial material layer 320 are first formed sequentially on one side of the substrate, as shown in (b) of FIG. 9, and then the second partial material layer 320 is etched to form a second portion 32 and a first portion 31, as shown in (c) of FIG. 9.

[0085] Specifically, the first portion material layer 310 and the second portion material layer 320 can be etched and removed, respectively, using at least one process of dry etching or wet etching, and as can be understood, etching using an etching solvent corresponding to the specific materials of the first portion material layer 310 and the second portion material layer 320 is not particularly limited.

[0086] In S130, the film layers of the light-emitting functional layer, such as the electron injection layer, the electron transport layer, the hole blocking layer, the light-emitting material layer, the electron blocking layer, the hole transport layer and the hole injection layer, and the first electrode, can be formed by a deposition process.

[0087] In some embodiments, S130 includes the following steps.

[0088] In S210, a first luminescent material is placed in each limiting opening, and a first conductive material is deposited at a first deposition angle, so that the first conductive material is laminated on one side of the first luminescent material.

[0089] In S220, a removal process is performed on the first light-emitting material and the first conductive material in the second opening, so that the second electrode is exposed through the limiting opening, and the second electrode is located on a side of the light-emitting functional layer closer to the substrate.

[0090] In S230, a second luminescent material is placed in each limiting opening, and a second conductive material is deposited at a second deposition angle, the second conductive material is stacked on one side of the second luminescent material, and the first deposition angle is smaller than the second deposition angle.

[0091] In S240, a removal process is performed on the second light emitting material and the second conductive material in the first opening.

[0092] In the embodiment of the present application, the first light emitting portion and the first electrode portion are manufactured first, and then the second light emitting portion and the second electrode portion are manufactured, and the first electrode portion and the second electrode portion are formed by depositing at different deposition angles, thereby avoiding the technical problem that the overlap connection between the first electrode and the first portion manufactured later is poor when the first electrode is formed by depositing at the same deposition angle due to corrosion of a part of the first portion caused by the removal process in S220. By forming the first electrode portion and the second electrode portion by depositing at different deposition angles, the edges of the first portion and the first electrode are overlapped and connected, improving the yield rate of the display panel.

[0093] The first conductive material in S210 and the second conductive material in S230 can be the same material, simplifying the manufacturing process. The first light-emitting material and the first conductive material located in the first opening form the first light-emitting portion and the first electrode portion, respectively, and the second light-emitting material and the second conductive material located in the second opening form the second light-emitting portion and the second electrode portion, respectively. When there are light-emitting portions emitting two or more different colors, refer to S210-S240, and deposit different light-emitting materials in the third opening, the fourth opening, the fifth opening, etc. in a stepwise manner, deposit conductive materials at gradually increasing deposition angles, and then remove one light-emitting material and conductive material in the limited opening.

[0094] In some embodiments, after S210, the method may further include covering the side of the first conductive material away from the substrate with a first packaging material.

[0095] S220 includes performing a removal process on the first packaging material, the first light emitting material, and the first conductive material in the second opening to expose the second electrode through the limited opening.

[0096] After S230, the method may further include covering the side of the second conductive material away from the substrate with a second packaging material.

[0097] S240 includes performing a removal process on the second light emitting material, the second conductive material, and the second packaging material located on the side of the first conductive material away from the substrate.

[0098] 9A, the second electrode 5 and the pixel defining layer 6 are provided on the substrate 1, and the second electrode 5 is exposed from the pixel defining layer 6. As shown in FIG. 9B, for convenience of illustration, the substrate 1 is not shown in FIG. 9B. The substrate 1 is provided with a first partial material layer 310 and a second partial material layer 320 to cover the second electrode 5 and the pixel defining layer 6. As shown in FIG. 9C, the first partial material layer 310 and the second partial material layer 320 are patterned to obtain an isolation structure 3, in which the first partial material layer 310 provided on the substrate 1 forms the first portion 31, and the second partial material layer 320 provided on the substrate 1 forms the second portion 32. The orthogonal projection of the first portion 31 of the isolation structure 3 on the substrate 1 is located within the orthogonal projection of the second portion 32 on the substrate 1, the isolation structure 3 forms a plurality of limiting openings 33 surrounding the isolation structure 3, and the second electrode 5 is exposed from the limiting openings 33. A connection line from an end edge of first portion 31 connected to pixel definition layer 6 to a blocking edge is used as a reference line, and dashed line L2 in Fig. 9(c) indicates a plane on which pixel definition layer 6 is located, and an included angle between said plane and the reference line is α, and the degrees of the included angle α corresponding to each first portion 31 are approximately the same. For example, as shown in Fig. 9(c), α1=α2.

[0099] Referring to FIG. 10(a), a first luminescent material is deposited, a first conductive material is deposited, and a first packaging material is deposited in sequence, where the first conductive material is deposited at a first deposition angle β1 to manufacture the first electrode portion 21. A luminescent material layer, a conductive material layer, and a packaging material layer are formed in each of the limited openings 33 including the first opening 331 and the second opening 332, and a part of the first luminescent material, the first conductive material, and the first packaging material are stacked on the second portion 32, and at this stage, α1 is still equal to α2. As shown in FIG. 10(b), a removal process is performed on the first luminescent material, the first conductive material, and the first packaging material in the second opening 332 and on the second portion 32, so that a part of the second electrode 5 is exposed from the second opening 332. The removal process may be etching, and when the first luminescent material, the first conductive material, and the first packaging material in the second opening 332 are etched, a part of the first portion 31 is corroded, and α1>α2. As shown in Fig. 10(c), the second light-emitting material is deposited, the second conductive material is deposited, and the second packaging material is deposited in sequence, where the second conductive material is deposited at a second deposition angle β2 to manufacture the second electrode part 22, where β2>β1. A second light-emitting material layer, a second conductive material layer, and a second packaging material layer are formed in each of the limited openings 33 including the first opening 331 and the second opening 332, and a part of the second light-emitting material, the second conductive material, and the second packaging material are laminated on the second part 32, so that the included angle θ2 between the second connecting line and the plane on which the substrate 1 is located is smaller than the included angle θ1 between the first connecting line and the plane on which the substrate 1 is located. As shown in Fig. 10(d), the second light-emitting material, the second conductive material, and the second packaging material in the first opening 331 and on the second part 32 are removed. The first light-emitting material in the first opening 331 forms the first light-emitting portion 41, the first conductive material forms the first electrode portion 21, and the first packaging material forms a first packaging layer 71 located on one side of the first electrode portion 21, the second light-emitting material in the second opening 332 forms the second light-emitting portion 42, the second conductive material forms the second electrode portion 22, and the second packaging material forms the first packaging layer 71 located on both sides of the second electrode portion 22.As shown in (e) of Figure 10, after the light-emitting functional layer, the first electrode, and the first package layer 71 are manufactured, a third package material and a fourth package material are provided to cover the first package layer 71 to form a second package layer 73 and a third package layer 74, respectively.

[0100] An embodiment of the third aspect of the present application further provides a display device including the display panel of any of the above-mentioned embodiments of the first aspect, or the display panel manufactured by any of the above-mentioned embodiments of the second aspect. Since the display device according to the embodiment of the third aspect of the present application includes the display panel of any of the above-mentioned embodiments of the first or second aspect, the display device according to the embodiment of the third aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments of the first or second aspect, and the description thereof will be omitted here.

[0101] The display device according to the embodiments of the present application may be applied to a mobile phone or any electronic product having a display function, including, but not limited to, a television, a laptop, a desktop display, a tablet computer, a digital camera, a smart bracelet, smart glasses, an in-vehicle display, a medical device, an industrial control device, a touch interaction terminal, and the like, and the embodiments of the present application are not particularly limited thereto.

[0102] The above is merely a specific embodiment of the present application, and for the convenience and conciseness of description, those skilled in the art can understand that the specific operation processes of the above-described systems, modules and units can refer to the corresponding processes in the above-described method examples, and the description will be omitted here. It can be understood that the protection scope of the present application is not limited thereto, and those skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and all of these modifications or replacements should be included in the protection scope of the present application.

[0103] It should be noted that the exemplary embodiments referred to in this application describe some methods or systems based on a sequence of steps or devices, however, this application is not limited to the order of the steps described above, i.e., steps may be performed according to the order described in the embodiments, may be performed in a different order than in the embodiments, or multiple steps may be performed simultaneously. [Explanation of symbols]

[0104] 1 Board 11 base 12 Planarization layer 13 Array Board 131 Active Layer 132 Gate electrode 133 Drain electrode 137 Source Electrode 135 1st plate 136 2nd plate 2 1st electrode 21 1st electrode section 22 Second electrode part 23 Third electrode part 3 Isolation structure 31 Part 1 311 First Subsection 312 Second Subsection 32 Part 2 321 Cutting Edge 33 Limited aperture 331 First Opening 332 Second Opening 333 3rd Opening 41 First light emitting part 42 Second light emitting part 43 Third light emitting part 5 Second electrode 6 Pixel Definition Layer 71 1st Package Layer 72 Second Package Layer 73 3rd Package Layer

Claims

1. A display panel comprising a substrate, an isolation structure, a light-emitting functional layer, and a plurality of first electrodes, the isolation structure is provided on one side of the substrate and surrounds a plurality of limiting openings, the plurality of limiting openings including a first opening and a second opening; the isolation structure includes a first portion and a second portion that are stacked one on the other; the first portion is provided on a side of the second portion closer to the substrate; an orthogonal projection of the first portion on the substrate is located within an orthogonal projection of the second portion on the substrate; the second portion includes a blocking edge; an orthogonal projection of the blocking edge on the substrate is located at an edge of an orthogonal projection of the second portion on the substrate; the blocking edge includes a first edge that defines the first opening and a second edge that defines the second opening; the light-emitting functional layer includes a plurality of first light-emitting sections and a plurality of second light-emitting sections, at least a portion of the first light-emitting sections being provided within the first opening, and at least a portion of the second light-emitting sections being provided within the second opening; the plurality of first electrodes are located on a side of the light-emitting functional layer away from the substrate, an edge of the first electrode is overlapped and connected to a side surface of the first portion facing the limiting opening, the plurality of first electrodes include a first electrode portion provided on one side of the first light-emitting portion and a second electrode portion provided on one side of the second light-emitting portion, the shortest connection line between the edge of the first electrode portion and the first edge is a first connection line, the shortest connection line between the edge of the second electrode portion and the second edge is a second connection line, and an included angle between the second connection line and a plane on which the substrate is located is smaller than an included angle between the first connection line and the plane on which the substrate is located, A display panel characterized by:

2. The plurality of limiting openings further include a third opening, the light emitting functional layer further includes a plurality of third light emitting units, at least a portion of the third light emitting units is provided within the third opening, and the blocking edge further includes a third edge that defines the third opening; the plurality of first electrodes include a third electrode portion provided on one side of the third light emitting portion, a shortest connection line between an edge of the third electrode portion and the third edge is a third connection line, and an included angle between the third connection line and a plane on which the substrate is located is smaller than an included angle between the second connection line and a plane on which the substrate is located; 2. The display panel according to claim 1 .

3. a minimum distance from an orthogonal projection of the first edge on the substrate to an orthogonal projection of the first portion on the substrate is H1, and a minimum distance from an orthogonal projection of the second edge on the substrate to an orthogonal projection of the first portion on the substrate is H2, where H1<H2.

2. The display panel according to claim 1 .

4. A cross section of the second portion along a direction perpendicular to a plane in which the substrate lies is trapezoidal; an area of ​​an orthogonal projection of a surface of the second portion away from the substrate on the substrate is smaller than an area of ​​an orthogonal projection of a surface of the second portion close to the substrate on the substrate; the blocking edge being a periphery of a surface of the second portion adjacent to the substrate; 2. The display panel according to claim 1 .

5. a transverse cross-section of the first portion along a direction perpendicular to a plane in which the substrate lies is trapezoidal; an area of ​​an orthogonal projection of a surface of the first portion away from the substrate on the substrate is smaller than an area of ​​an orthogonal projection of a surface of the second portion close to the substrate on the substrate; 2. The display panel according to claim 1 .

6. the first portion comprises a single layer metal structure, the first portion comprising aluminum; Alternatively, the first portion includes a multi-layer metal structure, and an edge of the first electrode is overlapped and connected to the multi-layer metal structure; the first portion includes a first subsection and a second subsection that are stacked together, the second subsection being disposed on a side of the first subsection that is away from the substrate, the first subsection including molybdenum and / or titanium, and the second subsection including aluminum; 2. The display panel according to claim 1 .

7. the display panel further includes a pixel definition layer disposed between the substrate and the isolation structure, the pixel definition layer including a plurality of pixel apertures, the orthogonal projection of the pixel apertures on the substrate being located within a range of the orthogonal projection of the limiting aperture on the substrate; the isolation structure is provided on a side of the pixel definition layer away from the substrate, and the light-emitting functional layer is at least partially provided within the pixel opening; the display panel further includes a first package layer covering a side of the first electrode away from the substrate; 2. The display panel according to claim 1 .

8. Providing a substrate; forming an isolation structure on one side of the substrate; forming a light-emitting functional layer and a plurality of first electrodes; the isolation structure surrounds a plurality of limiting openings, the limiting openings include a plurality of first openings and a plurality of second openings, the isolation structure includes a first portion and a second portion that are stacked, the first portion is provided on a side of the second portion closer to the substrate, an orthogonal projection of the first portion on the substrate is located within an orthogonal projection of the second portion on the substrate, the second portion includes a blocking edge, an orthogonal projection of the blocking edge on the substrate is located at an edge of an orthogonal projection of the second portion on the substrate, and the blocking edge includes a first edge that defines the first opening and a second edge that defines the second opening, the light-emitting functional layer includes a first light-emitting portion and a second light-emitting portion, at least a portion of the first light-emitting portion is provided within the first opening, and at least a portion of the second light-emitting portion is provided within the second opening, a first electrode is located on a side of the light-emitting functional layer away from the substrate, an edge of the first electrode is overlapped and connected to a side surface of the first portion facing the limited opening, the plurality of first electrodes include a first electrode portion provided on one side of the first light-emitting portion and a second electrode portion provided on one side of the second light-emitting portion, a shortest connecting line between an edge of the first electrode portion and the first edge is a first connecting line, a shortest connecting line between an edge of the second electrode portion and the second edge is a second connecting line, and an included angle between the second connecting line and a plane on which the substrate is located is smaller than an included angle between the first connecting line and the plane on which the substrate is located, A method for manufacturing a display panel comprising the steps of:

9. The step of forming the light emitting functional layer and the first electrode includes: disposing a first luminescent material in each of the limiting openings, and depositing a first conductive material at a first deposition angle, the first conductive material being laminated on one side of the first luminescent material; performing a removal process on the first light-emitting material and the first conductive material in the second opening to expose a second electrode through a limited opening, the second electrode being located on a side of the light-emitting functional layer closer to the substrate; disposing a second luminescent material in each of the limiting openings; depositing a second conductive material at a second deposition angle; the second conductive material is stacked on one side of the second luminescent material, and the first deposition angle is smaller than the second deposition angle; performing a removal process on the second light emitting material and the second conductive material in the first opening.

9. The method for manufacturing a display panel according to claim 8.

10. A display device comprising the display panel according to claim 1 , or a display panel manufactured by the method for manufacturing a display panel according to claim 8 .

Images