Display panel and display device

Abstract

The invention belongs to the technical field of display, and particularly relates to a display panel and a display device. The display panel comprises a substrate, first electrodes, an insulating layer and an isolation structure, the first electrodes are arranged on one side of the substrate, and a first opening is formed between every two adjacent first electrodes; the insulating layer is arranged on the side, away from the substrate, of the first electrode, at least part of the insulating layer is located in the first opening, the insulating layer comprises a second opening penetrating through the insulating layer, and the orthographic projection of the second opening on the substrate and the orthographic projection of the first electrode on the substrate are at least partially overlapped; the isolation structure is arranged on the side, away from the substrate, of the insulation layer. The orthographic projection of the first opening on the substrate is located in the orthographic projection of the isolation structure on the substrate.

Description

Technical Field

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

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

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

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

[0005] An embodiment of the present application provides a display panel, which includes a substrate, a first electrode, an insulating layer and an isolation structure, wherein the first electrode is arranged on one side of the substrate, and a first opening is present between two adjacent first electrodes; the insulating layer is arranged on a side of the first electrode facing away from the substrate, and at least a portion of the insulating layer is located within the first opening, and the insulating layer includes a second opening that penetrates the insulating layer, and an orthographic projection of the second opening on the substrate at least partially overlaps with an orthographic projection of the first electrode on the substrate; the isolation structure is arranged on a side of the insulating layer facing away from the substrate, and an orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0006] According to an implementation scheme of the first aspect of the present application, the isolation structure includes: an isolation wall, which is arranged on a side of the insulating layer facing away from the substrate; a blocking portion, which is arranged on a side of the isolation wall facing away from the substrate, the orthographic projection of the isolation wall on the substrate is located within the orthographic projection of the blocking portion on the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the blocking portion on the substrate; optionally, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation wall on the substrate; optionally, the isolation wall includes a first surface and a second surface, one of the first surface and the second surface is a lower surface facing the substrate, and the other is an upper surface facing away from the substrate, and the orthographic projection of the first surface on the substrate is located within the orthographic projection of the blocking portion on the substrate. The orthographic projection of the first electrode on the substrate at least partially overlaps with the orthographic projection of the second surface on the substrate within the orthographic projection of the second surface on the substrate; optionally, the orthographic projection of the first electrode on the substrate at least partially overlaps with the orthographic projection of the first surface on the substrate; optionally, the first surface is the upper surface of the isolation wall facing away from the substrate, and the second surface is the lower surface of the isolation wall facing the substrate; optionally, the orthographic projection of the upper surface of the isolation wall on the substrate is located within the orthographic projection of the lower surface of the isolation wall on the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the upper surface of the isolation wall on the substrate; optionally, the material of the isolation wall includes a conductive material.

[0007] According to an implementation of the first aspect of the present application, the isolation structure includes a third surface and a fourth surface, the third surface is the upper surface of the isolation structure facing away from the substrate, the fourth surface is the lower surface of the isolation structure facing the substrate, the orthographic projection of the fourth surface on the substrate is located within the orthographic projection of the third surface on the substrate, and the orthographic projection of the first electrode on the substrate at least partially overlaps with the orthographic projection of the fourth surface on the substrate; optionally, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the fourth surface on the substrate; optionally, the cross-section of the isolation structure in the thickness direction of the display panel is an inverted trapezoid. According to an implementation of the first aspect of the present application, the orthographic projection of the second opening on the substrate is staggered with the orthographic projection of the first opening on the substrate.

[0008] According to an implementation scheme of the first aspect of the present application, the insulating layer includes a fifth surface and a sixth surface, the fifth surface is a surface of the insulating layer facing away from the substrate, the sixth surface is a surface of the insulating layer close to the substrate, the orthographic projection of the fifth surface on the substrate is within the orthographic projection of the sixth surface on the substrate, and the orthographic projection of the first opening on the substrate is within the orthographic projection of the fifth surface on the substrate.

[0009] According to an implementation of the first aspect of the present application, a first groove is provided on the side of the insulating layer facing away from the substrate, the orthographic projection of the first groove on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate, and at least part of the isolation structure is located in the first groove.

[0010] According to an implementation scheme of the first aspect of the present application, the isolation structure is provided with a second groove on the side facing away from the substrate, and the orthographic projection of the second groove on the substrate at least partially overlaps with the orthographic projection of the first groove on the substrate; optionally, the orthographic projection of the second groove on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate.

[0011] According to an implementation scheme of the first aspect of the present application, the isolation structure includes: an isolation wall, which is arranged on the side of the insulating layer away from the substrate, at least part of the isolation wall is located in the first groove, and a third groove is provided on the side of the isolation wall away from the substrate, and the orthographic projection of the third groove on the substrate at least partially overlaps with the orthographic projection of the first groove on the substrate; optionally, the isolation structure also includes: a blocking portion, which is arranged on the side of the isolation wall away from the substrate, the orthographic projection of the isolation wall on the substrate is located within the orthographic projection of the blocking portion on the substrate, at least part of the blocking portion is located in the third groove, the second groove is located on the side of the blocking portion away from the isolation wall, and the orthographic projection of the second groove on the substrate at least partially overlaps with the orthographic projection of the third groove on the substrate; optionally, the orthographic projection of the third groove on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate.

[0012] According to an implementation scheme of the first aspect of the present application, it also includes: a light-emitting functional layer, including a plurality of light-emitting functional parts, wherein the light-emitting functional parts are located in the second opening; a second electrode, located on the side of the light-emitting functional layer away from the substrate, at least part of the second electrode is located in the second opening; optionally, the isolation structure is located between adjacent light-emitting functional parts; optionally, the second electrode is in contact with and connected to the isolation structure, and the second electrodes in at least two adjacent second openings are electrically connected through the isolation structure.

[0013] According to an implementation of the first aspect of the present application, the insulating layer includes a pixel definition layer, and the pixel definition layer includes a pixel defining portion and the second opening formed by enclosing the pixel defining portion.

[0014] According to an implementation of the first aspect of the present application, a distance between two adjacent first electrodes is greater than or equal to 5 μm.

[0015] On the other hand, an embodiment of the present application further provides a display device, comprising the display panel of any of the above embodiments.

[0016] In the display panel of the embodiment of the present application, the display panel includes a substrate, a first electrode, an insulating layer and an isolation structure, the first electrode is arranged on one side of the substrate, and a first opening is present between two adjacent first electrodes; the insulating layer is arranged on the side of the first electrode facing away from the substrate, at least part of the insulating layer is located in the first opening, the insulating layer includes a second opening penetrating the insulating layer, the orthographic projection of the second opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate, and the orthographic projection of the second opening on the substrate is staggered with the orthographic projection of the first opening on the substrate; the isolation structure is arranged on the side of the insulating layer facing away from the substrate, by making the orthographic projection of the first opening on the substrate located within the orthographic projection of the isolation structure on the substrate, that is, the boundary of the first electrode extends to the coverage range of the orthographic projection of the isolation structure, thereby reducing the size of the first opening, improving the undulation of the insulating layer in a larger area, and then improving the undulation of the film layer forming the isolation structure in a larger area, which is beneficial to preparing the isolation structure in the subsequent process and improving the process performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of a top view of a display panel according to some embodiments of the present application;

[0019] Figure 2 An example is shown Figure 1 The middle part shows an enlarged top view of the structure of the panel in area B;

[0020] Figure 3 An example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0021] Figure 4 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0022] Figure 5 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0023] Figure 6 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0024] Reference numerals:

[0025] 10. Display panel;

[0026] 100. Substrate;

[0027] 200, first electrode; 210, first opening;

[0028] 300, insulating layer; 310, second opening; 320, first groove; 330, fifth surface; 340, sixth surface; 350, pixel defining portion;

[0029] 400, isolation structure; 410, second groove; 420, isolation wall; 421, third groove; 422, first surface; 423, second surface; 430, blocking portion; 440, third surface; 450, fourth surface; 460, isolation opening;

[0030] 500, light-emitting functional layer; 510, light-emitting functional part;

[0031] 600, a second electrode;

[0032] AA, display area; z, thickness direction of the display panel. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] The applicant has discovered that in the related art, the process performance of existing OLED display panels needs to be improved.

[0036] In view of the above problems, the applicant proposes a display panel, which includes a substrate, a first electrode, an insulating layer and an isolation structure, wherein the first electrode is arranged on one side of the substrate, and a first opening exists between two adjacent first electrodes; the insulating layer is arranged on the side of the first electrode facing away from the substrate, and at least part of the insulating layer is located in the first opening, and the insulating layer includes a second opening passing through the insulating layer, and the orthographic projection of the second opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate; the isolation structure is arranged on the side of the insulating layer facing away from the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0037] In the display panel provided in the present application, the display panel includes a substrate, a first electrode, an insulating layer and an isolation structure, the first electrode is arranged on one side of the substrate, and a first opening is provided between two adjacent first electrodes; the insulating layer is arranged on the side of the first electrode facing away from the substrate, at least part of the insulating layer is located in the first opening, the insulating layer includes a second opening penetrating the insulating layer, the orthographic projection of the second opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate, and the orthographic projection of the second opening on the substrate is staggered with the orthographic projection of the first opening on the substrate; the isolation structure is arranged on the side of the insulating layer facing away from the substrate, and by making the orthographic projection of the first opening on the substrate located within the orthographic projection of the isolation structure on the substrate, the boundary of the first electrode extends to the coverage range of the isolation structure, thereby reducing the size of the first opening, improving the undulation of the insulating layer in a larger area, and then improving the undulation of the film layer forming the isolation structure in a larger area, which is beneficial to prepare the isolation structure in the subsequent process and improve the process performance of the display panel.

[0038] In order to better understand the present application, the display panel and display device of the present application are described in detail below in conjunction with the accompanying drawings. It should be noted that the z direction in the accompanying drawings is the thickness direction of the display panel. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions, and some hierarchical structures in the display module are not drawn.

[0039] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of a top view of a display panel according to some embodiments of the present application; Figure 2 An example is shown Figure 1 The middle part shows an enlarged top view of the structure of the panel in area B; Figure 3 An example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG. Figure 1 The B area is located in the display area AA of the display panel.

[0040] like Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a display panel 10, the display panel 10 includes a substrate 100, a first electrode 200, an insulating layer 300 and an isolation structure 400, the first electrode 200 is arranged on one side of the substrate 100, and a first opening 210 exists between two adjacent first electrodes 200. The insulating layer 300 is arranged on the side of the first electrode 200 away from the substrate 100, at least part of the insulating layer 300 is located in the first opening 210, the insulating layer 300 includes a second opening 310 penetrating the insulating layer 300, the orthographic projection of the second opening 310 on the substrate 100 overlaps with the orthographic projection of the first electrode 200 on the substrate at least partially, and the orthographic projection of the second opening 310 on the substrate 100 is staggered with the orthographic projection of the first opening 210 on the substrate 100; the isolation structure 400 is arranged on the side of the insulating layer 300 away from the substrate 100, and the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the isolation structure 400 on the substrate 100. In the related art, due to the existence of the first opening 210, the side of the insulating layer 300 facing away from the first electrode 200 will have undulations at the corresponding position of the first opening 210. If the orthographic projection of the first opening 210 on the substrate 100 is not located within the orthographic projection of the isolation structure 400 on the substrate 100, that is, the first opening 210 is relatively large, the insulating layer 300 covering the first opening 210 will have undulations in a larger area, and the isolation structure film layer formed on the insulating layer 300 will have undulations in a larger area, which is not conducive to the preparation of the isolation structure 400 in the subsequent process. For example, in the case where the entire film layer where the isolation structure is located is formed but the isolation structure 400 is not formed, the boundary of the isolation structure 400 to be formed is at the undulating position or near the undulating position of the isolation structure film layer, and the undulations will affect the preparation of the isolation structure 400 and the process performance of the display panel.

[0041] In the embodiment of the present application, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the isolation structure 400 on the substrate 100, so that the boundary of the first electrode 200 extends to the coverage range of the isolation structure 400, thereby reducing the size of the first opening 210, thereby reducing the area where the insulating layer 300 appears to be undulating, and improving the undulation of the isolation structure film layer in a larger area, which is beneficial to the preparation of the isolation structure in the subsequent process and improving the process performance of the display panel.

[0042] In some optional embodiments, a first groove 320 is provided on the side of the insulating layer 300 facing away from the substrate 100 , the orthographic projection of the first groove 320 on the substrate 100 at least partially overlaps with the orthographic projection of the first opening 210 on the substrate 100 , and at least part of the isolation structure 400 is located in the first groove 320 .

[0043] Optionally, at least a portion of the insulating layer 300 is located in the first opening 210 , so that a first groove 320 is formed on a side of the insulating layer 300 facing away from the substrate 100 .

[0044] Optionally, the insulating layer 300 includes a fifth surface 330 and a sixth surface 340, the fifth surface 330 is the upper surface of the insulating layer 300 facing away from the substrate 100, and the sixth surface 340 is the lower surface of the insulating layer 300 facing the substrate 100. The orthographic projection of the fifth surface 330 on the substrate 100 is located within the orthographic projection of the sixth surface 340 on the substrate 100, and the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the fifth surface 330 on the substrate 100.

[0045] In the display panel 10 provided in the embodiment of the present application, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the fifth surface 330 on the substrate 100, that is, the boundary of the first electrode 200 extends into the coverage range of the fifth surface 330, so that the boundary of the first electrode 200 is staggered with the boundary of the insulating layer 300, and the boundary of the insulating layer 300 refers to the junction of the fifth surface 330 and the side surface of the insulating layer 300, thereby reducing the undulating area of ​​the insulating layer 300, which is beneficial to the preparation of the isolation structure 400 in the subsequent process and improving the process performance of the display panel.

[0046] In some optional embodiments, the isolation structure 400 is provided with a second groove 410 on a side facing away from the substrate 100 , and an orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with an orthographic projection of the first groove 320 on the substrate 100 .

[0047] Optionally, an orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with an orthographic projection of the first opening 210 on the substrate 100 .

[0048] In the display panel 10 provided in the embodiment of the present application, at least a portion of the insulating layer 300 is located in the first opening 210, so that the insulating layer 300 forms a first groove 320 on the side facing away from the substrate 100, and at least a portion of the isolation structure 400 is located in the first groove 320, so that the isolation structure 400 forms a second groove 410 on the side facing away from the substrate 100.

[0049] In some optional embodiments, the isolation structure 400 includes an isolation wall 420, which is arranged on the side of the insulating layer 300 facing away from the substrate 100, at least part of the isolation wall 420 is located in the first groove 320, and a third groove 421 is provided on the side of the isolation wall 420 facing away from the substrate 100, and the orthographic projection of the third groove 421 on the substrate 100 at least partially overlaps with the orthographic projection of the first groove 320 on the substrate 100.

[0050] Optionally, the isolation structure 400 also includes a blocking portion 430, which is arranged on the side of the isolation wall 420 facing away from the substrate 100, the orthographic projection of the isolation wall 420 on the substrate 100 is located within the orthographic projection of the blocking portion 430 on the substrate 100, at least part of the blocking portion 430 is located in the third groove 421, the second groove 410 is located on the side of the blocking portion 430 facing away from the isolation wall 420, and the orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with the orthographic projection of the third groove 421 on the substrate 100.

[0051] In some optional embodiments, the isolation wall 420 and the barrier portion 430 both include metal materials, and further, the isolation wall 420 and the barrier portion 430 include different metal materials. For example, the isolation wall 420 includes aluminum, and the barrier portion 430 includes titanium. Of course, the materials of the isolation wall 420 and the barrier portion 430 are not limited thereto, and may also include other types of metal materials, which are not specifically limited here. For better explanation, the following takes the isolation wall 420 including aluminum and the barrier portion 430 including titanium as an example to illustrate the embodiments of the present application.

[0052] After forming the metal aluminum layer of the isolation wall 420 and the metal titanium layer of the barrier 430, and before forming the isolation wall 420 and the barrier 430, the metal aluminum layer and the metal titanium layer may be dry-etched first and then wet-etched to form the eaves-shaped isolation structure 400. By designing the boundary of the first electrode 200 to extend to the coverage of the barrier 430, the influence of the fluctuation of the metal aluminum layer and the metal titanium layer on the dry etching may be reduced, thereby improving the dry etching effect.

[0053] Optionally, an orthographic projection of the third groove 421 on the substrate 100 at least partially overlaps with an orthographic projection of the first opening 210 on the substrate 100 .

[0054] In the display panel 10 provided in the embodiment of the present application, at least a portion of the insulating layer 300 is located in the first opening 210, so that the insulating layer 300 forms a first groove 320 on the side facing away from the substrate 100, at least a portion of the isolation wall 420 is located in the first groove 320, so that a third groove 421 is formed on the side of the isolation wall 420 facing away from the substrate 100, and at least a portion of the blocking portion 430 is located in the third groove 421, so that a second groove 410 is formed on the side of the blocking portion 430 facing away from the substrate 100.

[0055] Please refer to Figures 3 to 5 , Figure 4 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG. Figure 5 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0056] like Figure 3As shown, in some optional embodiments, the orthographic projection of the isolation wall 420 on the substrate 100 is located within the orthographic projection of the blocking portion 430 on the substrate 100 , wherein the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the blocking portion 430 on the substrate 100 . Figure 3 The dotted line A1 in FIG. 1 is not a physical line, but a projection line of the orthographic projection of the blocking portion 430 on the substrate 100. The orthographic projection of the blocking portion 430 on the substrate 100 can be understood as Figure 3 The interval between the two dotted lines A1 in .

[0057] The isolation structure 400 can replace the metal mask, thereby reducing the mold opening cost and improving the pixel density of the display panel 10. By forming the barrier portion 430 into a roof-like structure, the devices are made independent of each other, thereby optimizing the optical performance of the display panel 10. The orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the barrier portion 430 on the substrate 100, that is, the boundary of the first electrode 200 extends into the coverage of the barrier portion 430, reducing the undulating area of ​​the insulating layer 300, thereby reducing the undulation of the film layer forming the isolation structure in a larger area, which is conducive to preparing the isolation structure in the subsequent process and improving the process performance of the display panel.

[0058] like Figure 4 As shown, optionally, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the isolation wall 420 on the substrate 100 .

[0059] Optionally, the isolation wall 420 includes a first surface 422 and a second surface 423, one of the first surface 422 and the second surface 423 is a lower surface facing the substrate 100, and the other is an upper surface facing away from the substrate 100, the orthographic projection of the first surface 422 on the substrate 100 is located within the orthographic projection of the second surface 423 on the substrate 100, and the orthographic projection of the first electrode 200 on the substrate 100 at least partially overlaps with the orthographic projection of the second surface 423 on the substrate 100. Figure 4 The dotted line A2 in FIG. 1 does not refer to a physical connection line, but a projection line of the orthographic projection of the second surface 423 on the substrate 100. The orthographic projection of the second surface 423 on the substrate 100 can be understood as Figure 4 The interval between the two dotted lines A2 in .

[0060] By making the orthographic projection of the first electrode 200 on the substrate 100 overlap at least partially with the orthographic projection of the second surface 423 on the substrate 100, that is, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the second surface 423 on the substrate 100, the boundary of the first electrode 200 extends into the coverage of the isolation wall 420, so that the first opening 210 is reduced, the undulating area of ​​the insulating layer 300 is further reduced, and the uniformity of the size of the isolation structure 400 (such as the height of the isolation structure) is improved, thereby improving the display effect of the display panel 10. Figure 5 As shown, optionally, the orthographic projection of the first electrode 200 on the substrate 100 at least partially overlaps with the orthographic projection of the first surface 422 on the substrate 100, that is, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100. Figure 5 The dotted line A3 in FIG. 1 does not refer to a physical connection line, but a projection line of the orthographic projection of the first surface 422 on the substrate 100. The orthographic projection of the first surface 422 on the substrate 100 can be understood as Figure 5 The interval between the two dotted lines A3 in FIG. 3 can reduce the undulating area of ​​the insulating layer 300 , improve the size uniformity of the isolation structure 400 , and further improve the display effect of the display panel 10 .

[0061] Optionally, the first surface 422 is an upper surface of the isolation wall 420 facing away from the substrate 100 , and the second surface 423 is a lower surface of the isolation wall 420 facing the substrate 100 .

[0062] Optionally, the orthographic projection of the upper surface of the isolation wall 420 on the substrate 100 is located within the orthographic projection of the lower surface of the isolation wall 420 on the substrate 100 , and the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the upper surface of the isolation wall 420 on the substrate 100 .

[0063] Optionally, the material of the isolation wall 420 includes a conductive material.

[0064] In some optional embodiments, the display panel 10 further includes a light-emitting functional layer 500 and a second electrode 600, the light-emitting functional layer 500 includes a plurality of light-emitting functional parts 510, and the light-emitting functional parts 510 are located in the second opening 310. The second electrode 600 is located on the side of the light-emitting functional layer 500 away from the substrate 100, and at least part of the second electrode 600 is located in the second opening 310. The first electrode 200 and the second electrode 600 are electrically connected to the light-emitting functional part 510, and the second electrode 600 and the first electrode 200 are used to provide power to the light-emitting functional part 510 to drive the light-emitting functional part 510 to emit light. Specifically, one of the first electrode 200 and the second electrode 600 is an anode, and the other is a cathode. The embodiment of the present application is illustrated by taking the second electrode 600 as a cathode and the first electrode 200 as an anode.

[0065] The light-emitting functional layer 500 may include a film layer structure including a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting material layer (EL), an electron transport layer (ETL), and an electron injection layer (EIL) stacked in sequence. The light-emitting material layer (EL) may include a light-emitting material for a red sub-pixel, a light-emitting material for a green sub-pixel, and a light-emitting material for a blue sub-pixel.

[0066] Optionally, the isolation structure 400 is located between adjacent light-emitting functional parts 510 .

[0067] In some embodiments, due to the existence of the isolation structure 400 , the isolation structure 400 can not only isolate the light-emitting functional layer 500 , but also isolate the second electrode layer, thereby forming the second electrode 600 .

[0068] Optionally, the second electrodes 600 are separated by the isolation structure 400, and each second electrode 600 can be controlled independently.

[0069] Optionally, the second electrode 600 is separated by the isolation structure 400, and multiple second electrodes 600 can be electrically connected through other components. For example, the second electrode 600 is in contact with the isolation structure 400, and the second electrodes 600 in at least two adjacent second openings 310 are electrically connected through the isolation structure 400.

[0070] The isolation structure 400 has a conductive material, and the second electrodes 600 in at least two adjacent second openings 310 are electrically connected through the conductive material of the isolation structure 400. Since the isolation structure 400 has good dimensional uniformity in the above embodiment, the second electrode 600 can be easily overlapped to the conductive material of the isolation structure 400, so as to realize the electrical connection of adjacent second electrodes 600 through the conductive material of the isolation structure 400.

[0071] For example, the second electrodes 600 in at least two adjacent second openings 310 are electrically connected via the isolation wall 420. The isolation structure 400 has good dimensional uniformity, so the second electrode 600 can be easily overlapped to the isolation wall 420.

[0072] In the display panel 10 provided in this embodiment, the second electrodes 600 corresponding to at least two adjacent second openings 310 are electrically connected through the isolation structure 400, so that the display panel 10 can be connected in a region or in the entire surface.

[0073] Please continue to refer to Figure 2 and Figure 5In some optional embodiments, the orthographic projection of the isolation structure 400 on the substrate 100 is in a grid shape. The isolation structure 400 can isolate the light-emitting functional parts 510 one by one, for example, the isolation structure 400 can isolate the light-emitting functional parts 510 of each sub-pixel one by one. The isolation structure 400 can isolate the light-emitting functional parts 510 of a group of sub-pixels one by one, for example, the isolation structure 400 can isolate the light-emitting functional parts 510 of a group of sub-pixels of the same color one by one.

[0074] Optionally, the isolation structure 400 encloses an isolation opening 460 , the orthographic projection of the isolation opening 460 on the substrate 100 at least partially overlaps with the orthographic projection of the second opening 310 on the substrate 100 , and the orthographic projection of the isolation opening 460 on the substrate 100 is staggered with the orthographic projection of the first opening 210 on the substrate 100 .

[0075] In some optional embodiments, the insulating layer 300 includes a pixel definition layer, and the pixel definition layer includes a pixel defining portion 350 and a second opening 310 surrounded by the pixel defining portion 350 .

[0076] In some optional embodiments, the distance between two adjacent first electrodes 200 is greater than or equal to 5 μm.

[0077] In the display panel 10 provided in this embodiment, the distance between two adjacent first electrodes 200 is greater than or equal to 5 μm, which reduces the probability of adjacent first electrodes 200 being connected as a whole during the preparation process, thereby reducing the difficulty of preparing the first opening 210 .

[0078] Please refer to Figure 6 , Figure 6 Another example is shown Figure 2 The cross-sectional view of the panel at section AA is shown in FIG.

[0079] like Figure 6 As shown, in some optional embodiments, the isolation structure 400 includes a third surface 440 and a fourth surface 450, the third surface 440 is an upper surface of the isolation structure 400 facing away from the substrate 100, and the fourth surface 450 is a lower surface of the isolation structure 400 facing the substrate 100. The orthographic projection of the fourth surface 450 on the substrate 100 is located within the orthographic projection of the third surface 440 on the substrate 100, and the orthographic projection of the first electrode 200 on the substrate 100 at least partially overlaps with the orthographic projection of the fourth surface 450 on the substrate 100.

[0080] Optionally, the orthographic projection of the first opening 210 on the substrate 100 is located within the orthographic projection of the fourth surface 450 on the substrate 100, so that the boundary of the first electrode 200 extends to the coverage range of the isolation structure 400, reducing the undulating area of ​​the insulating layer 300, which is beneficial to improving the process performance of the display panel.

[0081] Optionally, the cross section of the isolation structure 400 in the thickness direction (z direction in the figure) of the display panel 10 is an inverted trapezoid. By making the cross section of the isolation structure 400 in the thickness direction z of the display panel 10 an inverted trapezoid, the devices are made independent of each other, the optical performance of the display panel 10 is optimized, and the independent packaging of each light-emitting functional unit 510 is achieved, thereby improving the packaging reliability of the display panel 10.

[0082] Optionally, the isolation structure 400 is an integrated structure, and the isolation structure 400 is formed into an inverted trapezoidal structure by etching. The second groove 410 is located on the third surface 440 .

[0083] In some optional embodiments, the substrate 100 may further include a substrate and a circuit layer, and the circuit layer may include a driving circuit. For example, the circuit layer may include a first conductive layer, a second conductive layer, and a third conductive layer that are arranged on one side of the substrate and are stacked. An insulating layer is provided between adjacent conductive layers. Exemplarily, the pixel driving circuit provided in the circuit layer includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first conductive layer, the second plate may be located in the second conductive layer, and the source and the drain may be located in the third conductive layer.

[0084] The embodiment of the second aspect of the present application further provides a display device, comprising the display panel of any of the above embodiments. Since the display device provided by the embodiment of the second aspect of the present application comprises the display panel of the above embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any of the above embodiments, which will not be described in detail here.

[0085] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0086] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A display panel, characterized in that: include: substrate; A first electrode is disposed on one side of the substrate, and a first opening exists between two adjacent first electrodes; an insulating layer, disposed on a side of the first electrode facing away from the substrate, at least a portion of the insulating layer being located in the first opening, the insulating layer comprising a second opening penetrating the insulating layer, an orthographic projection of the second opening on the substrate at least partially overlapping an orthographic projection of the first electrode on the substrate; The isolation structure is arranged on a side of the insulating layer away from the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation structure on the substrate.

2. The display panel according to claim 1, characterized in that: The isolation structure comprises: An isolation wall is arranged on a side of the insulating layer away from the substrate; a barrier portion, arranged on a side of the isolation wall facing away from the substrate, the orthographic projection of the isolation wall on the substrate being located within the orthographic projection of the barrier portion on the substrate, and the orthographic projection of the first opening on the substrate being located within the orthographic projection of the barrier portion on the substrate; Preferably, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation wall on the substrate; Preferably, the isolation wall comprises a first surface and a second surface, one of the first surface and the second surface is a lower surface facing the substrate, and the other is an upper surface facing away from the substrate, an orthographic projection of the first surface on the substrate is located within an orthographic projection of the second surface on the substrate, and an orthographic projection of the first electrode on the substrate at least partially overlaps with an orthographic projection of the second surface on the substrate; Preferably, the orthographic projection of the first electrode on the substrate at least partially overlaps with the orthographic projection of the first surface on the substrate; Preferably, the first surface is an upper surface of the isolation wall facing away from the substrate, and the second surface is a lower surface of the isolation wall facing the substrate; Preferably, the orthographic projection of the upper surface of the isolation wall on the substrate is located within the orthographic projection of the lower surface of the isolation wall on the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the upper surface of the isolation wall on the substrate; Preferably, the material of the isolation wall includes conductive material.

3. The display panel according to claim 1, characterized in that: The isolation structure comprises a third surface and a fourth surface, the third surface is an upper surface of the isolation structure facing away from the substrate, the fourth surface is a lower surface of the isolation structure facing the substrate, the orthographic projection of the fourth surface on the substrate is located within the orthographic projection of the third surface on the substrate, and the orthographic projection of the first electrode on the substrate at least partially overlaps with the orthographic projection of the fourth surface on the substrate; Preferably, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the fourth surface on the substrate; Preferably, the isolation structure has a cross-section in the thickness direction of the display panel in the shape of an inverted trapezoid.

4. The display panel according to claim 1, characterized in that: The orthographic projection of the second opening on the substrate is staggered from the orthographic projection of the first opening on the substrate; Preferably, the insulating layer includes a fifth surface and a sixth surface, the fifth surface is a surface of the insulating layer facing away from the substrate, and the sixth surface is a surface of the insulating layer close to the substrate. The orthographic projection of the fifth surface on the substrate is located within the orthographic projection of the sixth surface on the substrate, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the fifth surface on the substrate.

5. The display panel according to claim 1, characterized in that: A first groove is provided on a side of the insulating layer facing away from the substrate, an orthographic projection of the first groove on the substrate at least partially overlaps with an orthographic projection of the first opening on the substrate, and at least a portion of the isolation structure is located in the first groove; Preferably, the isolation structure is provided with a second groove on a side facing away from the substrate, and an orthographic projection of the second groove on the substrate at least partially overlaps with an orthographic projection of the first groove on the substrate; Preferably, an orthographic projection of the second groove on the substrate at least partially overlaps with an orthographic projection of the first opening on the substrate.

6. The display panel according to claim 5, characterized in that: The isolation structure comprises: an isolation wall, arranged on a side of the insulating layer away from the substrate, at least a portion of the isolation wall being located in the first groove, a third groove being arranged on a side of the isolation wall away from the substrate, and an orthographic projection of the third groove on the substrate at least partially overlapping with an orthographic projection of the first groove on the substrate; Preferably, the isolation structure further comprises: a barrier portion, arranged on a side of the isolation wall away from the substrate, the orthographic projection of the isolation wall on the substrate being located within the orthographic projection of the barrier portion on the substrate, at least a portion of the barrier portion being located within the third groove, the second groove being located on a side of the barrier portion away from the isolation wall, and the orthographic projection of the second groove on the substrate at least partially overlapping with the orthographic projection of the third groove on the substrate; Preferably, an orthographic projection of the third groove on the substrate at least partially overlaps with an orthographic projection of the first opening on the substrate.

7. The display panel according to any one of claims 1 to 6, characterized in that: Also includes: a light-emitting functional layer, comprising a plurality of light-emitting functional parts, wherein the light-emitting functional parts are located in the second opening; A second electrode is located on a side of the light-emitting functional layer away from the substrate, and at least a portion of the second electrode is located in the second opening; Preferably, the isolation structure is located between adjacent light-emitting functional parts; Preferably, the second electrode is in contact with and connected to the isolation structure, and the second electrodes in at least two adjacent second openings are electrically connected via the isolation structure.

8. The display panel according to any one of claims 1 to 6, characterized in that: The insulating layer includes a pixel definition layer, and the pixel definition layer includes a pixel definition portion and the second opening surrounded by the pixel definition portion.

9. The display panel according to any one of claims 1 to 6, characterized in that: The distance between two adjacent first electrodes is greater than or equal to 5 μm.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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