Display panel and display device

Abstract

The present application relates to the technical field of display, and in particular to a display panel and a display device. The present application discloses the display panel. The display panel comprises a substrate, first electrodes, insulating layers, and isolation structures. The first electrodes are arranged on one side of the substrate, and a first opening is present between every two adjacent first electrodes. Each insulating layer is arranged on the side of a corresponding first electrode away from the substrate; at least part of each insulating layer is located in a corresponding first opening; each insulating layer comprises a second opening passing through the insulating layer; and the orthographic projection of each second opening on the substrate at least partially overlaps the orthographic projection of a corresponding first electrode on the substrate. Each isolation structure is arranged on the side of a corresponding insulating layer away from the substrate, and the orthographic projection of each first opening on the substrate is located within the orthographic projection of a corresponding isolation structure on the substrate.

Description

Display panel and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310707209.0, filed on June 13, 2023, entitled “Display Panel and Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of display, and in particular to a display panel and a display device. Background Art

[0004] 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, and desktop computers due to their advantages such as high image quality, power saving, thin body, and wide range of applications, becoming the mainstream display device.

[0005] However, the process performance of current OLED display products needs to be improved.

[0006] Summary of the Invention

[0007] Embodiments of the present application provide a display panel and a display device, aiming to improve the process performance of the display panel.

[0008] In a first aspect, an embodiment of the present application provides a display panel, which 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 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. The insulating layer includes a second opening that passes through 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 the orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0009] On the other hand, a second embodiment of the present application further provides a display device, comprising the display panel of any of the above embodiments.

[0010] 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 passing through 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 the preparation of the isolation structure in the subsequent process and improving the process performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic top view of a display panel according to some embodiments of the present application;

[0012] FIG2 is a schematic diagram showing an enlarged top view of the display panel in area B in FIG1 ;

[0013] FIG3 shows an exemplary cross-sectional view of the display panel in FIG2 taken along section AA;

[0014] FIG4 shows another example of a cross-sectional view of the display panel in FIG2 taken along section AA;

[0015] FIG5 shows a cross-sectional view of the display panel in FIG2 at section AA of another example;

[0016] FIG. 6 shows a cross-sectional view of the display panel in FIG. 2 taken along section AA according to another example.

[0017] Description of reference numerals:

[0018] 10. Display panel;

[0019] 100. Substrate;

[0020] 200, first electrode; 210, first opening;

[0021] 300, insulating layer; 310, second opening; 320, first groove; 330, fifth surface; 340, sixth surface; 350, pixel defining portion;

[0022] 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;

[0023] 500, light-emitting functional layer; 510, light-emitting functional portion;

[0024] 600, second electrode;

[0025] AA, display area; z, thickness direction of the display panel. DETAILED DESCRIPTION

[0026] In this document, relational terms such as first and second are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0027] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or region, it may mean that it is directly on the other layer or region, or that other layers or regions are included between it and the other layer or region. Furthermore, if the component is turned over, the layer or region will be "below" or "beneath" the other layer or region.

[0028] The applicant has discovered that in the related art, the process performance of existing OLED display panels needs to be improved.

[0029] 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 is present 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 within 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.

[0030] 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 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 passing through 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 the preparation of the isolation structure in subsequent processes and improving the process performance of the display panel.

[0031] To better understand the present application, the display panel and display device according to the present application are described in detail below with reference to the accompanying drawings. It should be noted that the z-direction in the accompanying drawings represents the thickness of the display panel. For ease of illustration, the dimensions in the drawings are not necessarily proportional to actual dimensions, and some hierarchical structures in the display module are not shown.

[0032] Please refer to Figures 1 to 3. Figure 1 is a schematic top view of the display panel according to some embodiments of the present application; Figure 2 is an enlarged top view of the display panel in area B of Figure 1; and Figure 3 is a cross-sectional view of the display panel in Figure 2 along section AA. Area B in Figure 1 is located in display area AA of the display panel.

[0033] As shown in Figures 1 to 3, an embodiment of the first aspect of the present application provides a display panel 10, comprising a substrate 100, first electrodes 200, an insulating layer 300, and an isolation structure 400. The first electrodes 200 are disposed on one side of the substrate 100, and a first opening 210 exists between two adjacent first electrodes 200. The insulating layer 300 is disposed on a side of the first electrodes 200 facing away from the substrate 100, with at least a portion of the insulating layer 300 located within the first opening 210. The insulating layer 300 includes a second opening 310 extending through the insulating layer 300, with the orthographic projection of the second opening 310 on the substrate 100 at least partially overlapping with the orthographic projection of the first electrodes 200 on the substrate, and the orthographic projection of the second opening 310 on the substrate 100 being staggered from the orthographic projection of the first opening 210 on the substrate 100. The isolation structure 400 is disposed on a side of the insulating layer 300 facing away from the substrate 100, with the orthographic projection of the first opening 210 on the substrate 100 located within the orthographic projection of the isolation structure 400 on the substrate 100. In the related art, due to the presence of the first opening 210, the side of the insulating layer 300 facing away from the first electrode 200 will fluctuate at the corresponding position of the first opening 210. If the orthographic projection of the first opening 210 on the substrate 100 is not 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 fluctuate over a larger area, and the isolation structure film layer formed on the insulating layer 300 will fluctuate over a larger area, which is not conducive to the preparation of the isolation structure 400 in the subsequent process. For example, when 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 or near the undulating position of the isolation structure film layer. This fluctuation will affect the preparation of the isolation structure 400 and affect the process performance of the display panel.

[0034] 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, reducing the size of the first opening 210, thereby reducing the area where the insulating layer 300 appears to be undulating, improving the undulation of the isolation structure film layer in a larger area, which is conducive to the preparation of the isolation structure in the subsequent process and improving the process performance of the display panel.

[0035] In some optional embodiments, a first groove 320 is provided on the side of the insulating layer 300 facing away from the substrate 100, and 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.

[0036] 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 .

[0037] 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.

[0038] 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. 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, which reduces the undulating area of ​​the insulating layer 300, is conducive to the preparation of the isolation structure 400 in the subsequent process, and improves the process performance of the display panel.

[0039] 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 .

[0040] Optionally, the orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with the orthographic projection of the first opening 210 on the substrate 100 .

[0041] 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.

[0042] 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, and at least part of the isolation wall 420 is located in the first groove 320. 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.

[0043] Optionally, the isolation structure 400 further includes a blocking portion 430, which is disposed 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 within 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.

[0044] In some optional embodiments, both isolation wall 420 and barrier portion 430 comprise metal materials. Furthermore, isolation wall 420 and barrier portion 430 may comprise different metal materials. For example, isolation wall 420 may comprise aluminum, and barrier portion 430 may comprise titanium. Of course, the materials of isolation wall 420 and barrier portion 430 are not limited to these materials and may also comprise other types of metal materials, which are not specifically limited herein. For better illustration, the following embodiments of the present application are described using an example in which isolation wall 420 comprises aluminum and barrier portion 430 comprises titanium.

[0045] After forming the aluminum layer of the isolation wall 420 and the titanium layer of the barrier portion 430, and before forming the isolation wall 420 and barrier portion 430, the aluminum layer and the titanium layer can be dry-etched and then wet-etched to form the eaves-shaped isolation structure 400. By designing the boundary of the first electrode 200 to extend within the coverage area of ​​the barrier portion 430, the impact of the undulations of the aluminum and titanium layers on the dry etching can be reduced, thereby improving the dry etching effect.

[0046] 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 .

[0047] 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.

[0048] Please refer to FIG. 3 to FIG. 5 , FIG. 4 shows another example of a cross-sectional view of the display panel in FIG. 2 at section AA; FIG. 5 shows another example of a cross-sectional view of the display panel in FIG. 2 at section AA.

[0049] As shown in FIG3 , 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, and 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. The dashed line A1 in FIG3 is not a physical connecting line, but rather the 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 the interval between the two dashed lines A1 in FIG3 .

[0050] The isolation structure 400 can replace a metal mask, thereby reducing mold costs and increasing the pixel density of the display panel 10. By forming the barrier portion 430 into a roof-like structure, the components are isolated from each other, thereby optimizing the optical performance of the display panel 10. The orthographic projection of the first opening 210 on the substrate 100 lies within the orthographic projection of the barrier portion 430 on the substrate 100. This means that the boundary of the first electrode 200 extends into the coverage area of ​​the barrier portion 430, reducing the undulation of the insulating layer 300 and, in turn, the undulation of the film layer forming the isolation structure over a larger area. This facilitates the subsequent fabrication of the isolation structure and improves the process performance of the display panel.

[0051] As shown in FIG. 4 , 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 .

[0052] Optionally, the isolation wall 420 includes a first surface 422 and a second surface 423, one of which 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. The dotted line A2 in FIG4 is not a physical connecting line, but rather 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 the interval between the two dotted lines A2 in FIG4.

[0053] By making the orthographic projection of the first electrode 200 on the substrate 100 at least partially overlap 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 range 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 and other dimensions) is improved, thereby improving the display effect of the display panel 10. As shown in FIG5 , 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. The dotted line A3 in FIG5 does not refer to a physical connection line, but rather to the 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 the interval between the two dotted lines A3 in FIG5 . This can reduce the undulating area of ​​the insulating layer 300, improve the dimensional uniformity of the isolation structure 400, and thereby enhance the display effect of the display panel 10.

[0054] Optionally, the first surface 422 is the upper surface of the isolation wall 420 facing away from the substrate 100 , and the second surface 423 is the lower surface of the isolation wall 420 facing the substrate 100 .

[0055] 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.

[0056] Optionally, the material of the isolation wall 420 includes a conductive material.

[0057] 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 units 510, and the light-emitting functional units 510 are located within the second opening 310. The second electrode 600 is located on a side of the light-emitting functional layer 500 facing away from the substrate 100, with at least a portion of the second electrode 600 located within the second opening 310. The first electrode 200 and the second electrode 600 are electrically connected to the light-emitting functional units 510. The second electrode 600 and the first electrode 200 are used to provide power to the light-emitting functional units 510, driving the light-emitting functional units 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. In the present embodiment, the second electrode 600 is used as a cathode and the first electrode 200 is used as an anode.

[0058] The light-emitting functional layer 500 may include a 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.

[0059] Optionally, the isolation structure 400 is located between adjacent light-emitting functional parts 510 .

[0060] In some embodiments, due to the presence 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 .

[0061] Optionally, the second electrodes 600 are separated by the isolation structure 400 , and each second electrode 600 can be controlled independently.

[0062] 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.

[0063] The isolation structure 400 comprises a conductive material, and the second electrodes 600 within at least two adjacent second openings 310 are electrically connected via the conductive material of the isolation structure 400. Since the isolation structure 400 has relatively good dimensional uniformity in the above embodiment, the second electrodes 600 can be easily overlapped with the conductive material of the isolation structure 400, thereby achieving electrical connection between adjacent second electrodes 600 via the conductive material of the isolation structure 400.

[0064] 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 with the isolation wall 420.

[0065] 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 via the isolation structure 400 , so that the display panel 10 can be connected in regions or across the entire surface.

[0066] Continuing with reference to FIG. 2 and FIG. 5 , in 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 units 510 one by one. For example, the isolation structure 400 can isolate the light-emitting functional units 510 of each sub-pixel one by one. The isolation structure 400 can also isolate the light-emitting functional units 510 of a group of sub-pixels one by one. For example, the isolation structure 400 can isolate the light-emitting functional units 510 of a group of sub-pixels of the same color one by one.

[0067] Optionally, the isolation structure 400 encloses an isolation opening 460 , and 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 .

[0068] 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 .

[0069] In some optional embodiments, the distance between two adjacent first electrodes 200 is greater than or equal to 5 μm.

[0070] 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 manufacturing process, thereby reducing the difficulty of manufacturing the first openings 210 .

[0071] Please refer to FIG. 6 , which shows a cross-sectional view of the display panel in FIG. 2 taken along section AA of another example.

[0072] As shown in FIG6 , in some optional embodiments, the isolation structure 400 includes a third surface 440 and a fourth surface 450. The third surface 440 is the upper surface of the isolation structure 400 facing away from the substrate 100, and the fourth surface 450 is the 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.

[0073] 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.

[0074] Optionally, the isolation structure 400 has an inverted trapezoidal cross-section in the thickness direction (z direction in the figure) of the display panel 10. By making the isolation structure 400 have an inverted trapezoidal cross-section in the thickness direction z of the display panel 10, the components 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.

[0075] 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 .

[0076] 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 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 drain may be located in the third conductive layer.

[0077] As shown in Figures 1 to 6, an embodiment of the second aspect of the present application further provides a display panel 10, comprising a substrate 100, a first electrode 200, an insulating layer 300, and an isolation structure 400. The first electrode 200 is disposed on one side of the substrate 100, and a plurality of first electrodes 200 are spaced apart. The insulating layer 300 is disposed on a side of the first electrode 200 facing away from the substrate 100. The insulating layer 300 includes a second opening 310 extending through the insulating layer 300. The orthographic projection of the second opening 310 on the substrate 100 at least partially overlaps with the orthographic projection of the first electrode 200 on the substrate 100. The isolation structure 400 is disposed on a side of the insulating layer 300 facing away from the substrate 100. The orthographic projection of the isolation structure 400 on the substrate 100 at least partially overlaps with the orthographic projection of the first electrode 200 on the substrate 100.

[0078] In some optional embodiments, the isolation structure 400 includes an isolation wall 420 and a blocking portion 430. The isolation wall 420 is disposed on a side of the insulating layer 300 facing away from the substrate 100. The blocking portion 430 is disposed on a 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. The orthographic projection of the blocking portion 430 on the substrate 100 at least partially overlaps with the orthographic projection of the first electrode 200 on the substrate 100.

[0079] In some optional embodiments, the orthographic projection of the isolation wall 420 on the substrate 100 at least overlaps with the orthographic projection of the first electrode 200 on the substrate 100 .

[0080] The third aspect of the present application also provides a display device comprising the display panel of any of the above-mentioned embodiments. Since the display device provided by the second aspect of the present application includes the display panel of any of the above-mentioned embodiments, the display device provided by the second aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments, which will not be further elaborated here.

[0081] 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.

Claims

1. A display panel, wherein: 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, wherein: The isolation structure comprises: An isolation wall is arranged on a side of the insulating layer away from the substrate; The blocking portion 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, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the blocking portion on the substrate.

3. The display panel according to claim 2, wherein: The orthographic projection of the first opening on the substrate is located within the orthographic projection of the isolation wall on the substrate.

4. The display panel according to claim 2, wherein: 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, the orthographic projection of the first surface on the substrate is located within the orthographic projection of the second 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 second surface on the substrate.

5. The display panel according to claim 4, wherein: An orthographic projection of the first electrode on the substrate at least partially overlaps with an orthographic projection of the first surface on the substrate.

6. The display panel according to claim 4, wherein: 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.

7. The display panel according to claim 2, wherein: 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.

8. The display panel according to claim 1, wherein: 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.

9. The display panel according to claim 8, wherein: The orthographic projection of the first opening on the substrate is located within the orthographic projection of the fourth surface on the substrate; The isolation structure has an inverted trapezoidal cross section in the thickness direction of the display panel.

10. The display panel according to claim 1, wherein: The orthographic projection of the second opening on the substrate is staggered from the orthographic projection of the first opening on the substrate; 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.

11. The display panel according to claim 1, wherein: 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.

12. The display panel according to claim 11, wherein: 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.

13. The display panel according to claim 12, wherein: 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.

14. The display panel according to claim 12, wherein: The isolation structure comprises: An isolation wall is arranged on the side of the insulating layer facing 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 facing 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.

15. The display panel according to claim 14, wherein: The isolation structure also includes: 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; 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.

16. The display panel according to any one of claims 1 to 15, wherein: 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; The isolation structure is located between adjacent light-emitting functional parts; 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.

17. A display panel, wherein: include: substrate; A first electrode is disposed on one side of the substrate, and a plurality of the first electrodes are disposed at intervals; an insulating layer, disposed on a side of the first electrode facing away from the substrate, 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 isolation structure on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate.

18. The display panel according to claim 17, wherein: The isolation structure comprises: An isolation wall is arranged on a side of the insulating layer away from the substrate; The blocking portion 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, and the orthographic projection of the blocking portion on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate.

19. The display panel according to claim 18, wherein: The orthographic projection of the isolation wall on the substrate at least overlaps with the orthographic projection of the first electrode on the substrate.

20. A display device, wherein: Comprising a display panel as described in any one of claims 1-19.

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