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 invention discloses a display panel, the display panel comprises a substrate, first electrodes and an isolation structure, a plurality of first electrode arrays are distributed on one side of the substrate, and each first electrode is provided with a first edge area; the isolation structure is arranged on the same side of the substrate and the first electrode, a plurality of isolation openings are defined by the isolation structure, the isolation structure and the first electrode are insulated from each other, and at least part of the first electrode is exposed out of the isolation openings; the isolation structure comprises an isolation wall, the isolation wall comprises a first face deviating from the substrate and a second face facing the substrate, the isolation wall further comprises a first side face connected with the first face and the second face, and the orthographic projection of at least part of the first edge area on the substrate and the orthographic projection of the first side face on the substrate are arranged in a staggered mode.

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”. This application claims priority to Chinese patent application No. 202311694025.1, filed on December 8, 2023, entitled “Display panel, preparation method thereof and display device”. The entire contents of that application are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of display technology, and in particular to display panels and display devices. 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] An embodiment of the present application provides a display panel, which includes a substrate, a first electrode and an isolation structure, wherein a plurality of first electrode arrays are distributed on one side of the substrate, and the first electrode has a first edge region; an isolation structure is arranged on the same side of the substrate and the first electrode, and the isolation structure encloses a plurality of isolation openings, the isolation structure and the first electrode are insulated from each other, and at least a portion of the first electrode is exposed from the isolation opening; wherein the isolation structure includes an isolation wall, the isolation wall includes a first surface facing away from the substrate and a second surface facing the substrate, the isolation wall also includes a first side surface connecting the first surface and the second surface, and an orthographic projection of at least a portion of the first edge region on the substrate and an orthographic projection of the first side surface on the substrate are staggered.

[0009] .

[0010] An embodiment of the first aspect of the present application also provides a display panel, comprising: a substrate; a first electrode located on one side of the substrate, an insulating layer located on a side of the first electrode facing away from the substrate, the insulating layer enclosing a pixel opening, the first electrode at least partially exposed from the pixel opening; an isolation structure arranged on a side of the insulating layer facing away from the substrate, wherein the isolation structure includes an isolation wall, the isolation wall includes a first surface facing away from the substrate and a second surface facing the substrate, the isolation wall also includes a first side surface connecting the first surface and the second surface, the surface of the insulating layer facing away from the substrate includes a flat area, and the orthographic projection of the first side surface on the substrate is located within the orthographic projection of the flat area on the substrate.

[0011] An embodiment of the first aspect of the present application also provides a display panel, comprising: a substrate, comprising a pixel circuit and a first via; a first electrode, located on one side of the substrate and on a side of the first via facing away from the pixel circuit, the first electrode and the pixel circuit being electrically connected through the first via; an isolation structure, arranged on one side of the substrate and located on the same side of the substrate as the first electrode, the isolation structure enclosing a plurality of isolation openings, the isolation structure and the first electrode being insulated from each other and at least a portion of the first electrode being exposed from the isolation openings, wherein the isolation structure includes an isolation wall, and the orthographic projection of the first via on the substrate and the orthographic projection of the isolation wall on the substrate are staggered.

[0012] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel according to any one of the above embodiments.

[0013] In the display panel of the embodiment of the present application, the display panel includes a substrate, a first electrode and an isolation structure. A plurality of first electrode arrays are distributed on one side of the substrate. The plurality of first electrodes are used to drive the plurality of light-emitting functional parts of the display panel to emit light for display. The first electrode has a first edge region, and the first edge region will affect the flatness of the subsequent film layer away from the substrate surface. The isolation structure and the first electrode are arranged on the same side of the substrate. The isolation structure encloses to form an isolation opening, and at least a portion of the first electrode is exposed from the isolation opening, so that the isolation opening can be used to accommodate the light-emitting functional part, and the first electrode exposed from the isolation opening can drive the light-emitting functional part in the isolation opening to emit light. The isolation structure includes an isolation wall, and the isolation wall includes a first side surface. At least a portion of the first edge region is staggered on the orthographic projection of the substrate and the first side surface is staggered on the orthographic projection of the substrate, so that at least a portion of the first edge region will not affect the flatness of the first side surface, which facilitates the subsequent film layer to be overlapped on the first side surface, thereby improving the process performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions 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.

[0015] FIG1 is a schematic top view of a display panel according to some embodiments of the present application;

[0016] FIG2 is a schematic diagram showing an enlarged top view of the display panel in area B in FIG1 ;

[0017] FIG3 shows an exemplary cross-sectional view of the display panel in FIG2 taken along section AA;

[0018] FIG4 shows another example of a cross-sectional view of the display panel in FIG2 taken along section AA;

[0019] FIG5 shows a cross-sectional view of the display panel in FIG2 at section AA of another example;

[0020] FIG6 shows a cross-sectional view of the display panel in FIG2 at section AA of another example;

[0021] FIG7 shows a cross-sectional view of the display panel in FIG2 at section AA of another example;

[0022] FIG8 shows a partial cross-sectional view of a display panel in an example;

[0023] FIG9 shows a partial cross-sectional view of a display panel in another example;

[0024] FIG10 is a schematic diagram showing an enlarged top view of the display panel in area B in FIG1 in another example;

[0025] FIG11 shows a partial cross-sectional view of a display panel in another example;

[0026] FIG12 shows a partial cross-sectional view of a display panel in another example;

[0027] FIG13 shows a partial cross-sectional view of a display panel in another example;

[0028] FIG14 shows a partial cross-sectional view of a display panel in another example;

[0029] FIG15 shows a partial cross-sectional view of a display panel in another example;

[0030] FIG16 shows a cross-sectional view of the display panel in FIG2 taken along section AA according to another example;

[0031] FIG17 shows a cross-sectional view of the display panel in FIG2 taken along section AA according to another example;

[0032] FIG18 is a schematic diagram showing a partially enlarged structure of FIG17 .

[0033] Reference numerals:

[0034] 10. Display panel; 30. Auxiliary electrode; 31. Transparent conductive connecting portion;

[0035] 100, substrate; 110, pixel circuit; 120, first via hole;

[0036] 200, first electrode; 210, first gap; 220, first edge region; 230, first top surface; 240, first bottom surface; 250, first sidewall; 260, auxiliary electrode;

[0037] 300, first insulating layer; 310, pixel opening; 320, first groove; 330, fifth surface; 340, sixth surface; 350, pixel defining portion; 301, second insulating layer; 302, flat area; 303, first area; 304, second area;

[0038] 400, isolation structure; 410, second groove; 420, isolation wall; 421, third groove; 422, first surface; 423, second surface; 430, blocking portion; 460, isolation opening; 470, first side surface; 480, light-transmitting hole;

[0039] 500, light-emitting functional layer; 510, light-emitting functional portion;

[0040] 600, second electrode;

[0041] AA, display area; Z, thickness direction of the display panel. DETAILED DESCRIPTION

[0042] 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 merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so 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, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0044] The applicant has discovered that in the related art, the process performance of existing OLED display panels needs to be improved.

[0045] In view of the above problems, the applicant proposes a display panel, which includes a substrate, a first electrode and an isolation structure, wherein a plurality of first electrode arrays are distributed on one side of the substrate, and the first electrode has a first edge area; the isolation structure is arranged on one side of the substrate and is located on the same side of the substrate as the first electrode, and the isolation structure encloses a plurality of isolation openings, the isolation structure and the first electrode are insulated from each other and at least part of the first electrode is exposed from the isolation opening; wherein the isolation structure includes an isolation wall, the isolation wall includes a first surface facing away from the substrate and a second surface facing the substrate along the thickness direction of the display panel, the isolation wall also includes a first side surface connecting the first surface and the second surface, and at least part of the first edge area is staggered in its orthographic projection on the substrate and the orthographic projection of the first side surface on the substrate.

[0046] In the display panel of the embodiment of the present application, the display panel includes a substrate, a first electrode and an isolation structure. A plurality of first electrode arrays are distributed on one side of the substrate. The plurality of first electrodes are used to drive the plurality of light-emitting functional parts of the display panel to emit light for display. The first electrode has a first edge region, and the first edge region will affect the flatness of the subsequent film layer away from the substrate surface. The isolation structure and the first electrode are arranged on the same side of the substrate. The isolation structure encloses to form an isolation opening, and at least a portion of the first electrode is exposed from the isolation opening, so that the isolation opening can be used to accommodate the light-emitting functional part, and the first electrode exposed from the isolation opening can drive the light-emitting functional part in the isolation opening to emit light. The isolation structure includes an isolation wall, and the isolation wall includes a first side surface. At least a portion of the first edge region is staggered on the orthographic projection of the substrate and the first side surface is staggered on the orthographic projection of the substrate, so that at least a portion of the first edge region will not affect the flatness of the first side surface, which facilitates the subsequent film layer to be overlapped on the first side surface, thereby improving the process performance of the display panel.

[0047] 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.

[0048] Please refer to Figures 1 to 3. Figure 1 is a schematic top view of the display panel 10 according to some embodiments of the present application; Figure 2 is an example of an enlarged top view of the display panel 10 in area B in Figure 1; and Figure 3 is an example of a cross-sectional view of the display panel 10 in Figure 2 taken along section AA. Area B in Figure 1 is located in the display area AA of the display panel 10.

[0049] As shown in Figures 1 to 3, an embodiment of the first aspect of the present application provides a display panel 10, which includes a substrate 100, a first electrode 200, and an isolation structure 400. A plurality of first electrodes 200 are arrayed on one side of the substrate 100, and the first electrodes 200 have a first edge region 220; the isolation structure 400 is disposed on one side of the substrate 100 and is located on the same side of the substrate 100 as the first electrodes 200. The isolation structure 400 encloses a plurality of isolation openings 460. The isolation structure 400 and the first electrodes 200 are arranged on the same side of the substrate 100. 0 are insulated from each other and at least a portion of the first electrode 200 is exposed from the isolation opening 460; wherein the isolation structure 400 includes an isolation wall 420, and the isolation wall 420 includes a first surface 422 facing away from the substrate 100 and a second surface 423 facing the substrate 100 along the thickness direction Z of the display panel 10, and the isolation wall 420 further includes a first side surface 470 connecting the first surface 422 and the second surface 423, and the orthographic projection of at least a portion of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered.

[0050] In the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, a first electrode 200, and an isolation structure 400. A plurality of first electrodes 200 are arranged in an array on one side of the substrate 100. The plurality of first electrodes 200 are used to drive the plurality of light-emitting functional units 510 of the display panel 10 to emit light for display. The first electrode 200 has a first edge region 220, which affects the flatness of subsequent film layers facing away from the surface of the substrate 100. The isolation structure 400 and the first electrode 200 are disposed on the same side of the substrate 100. The isolation structure 400 encloses an isolation opening 460, and at least a portion of the first electrode 200 is exposed from the isolation opening 460, so that the isolation opening 460 can be used to accommodate the light-emitting functional unit 510. The first electrode 200 exposed from the isolation opening 460 can drive the light-emitting functional unit 510 within the isolation opening 460 to emit light. The isolation structure 400 includes an isolation wall 420, and the isolation wall 420 includes a first side surface 470. The orthographic projection of at least part of the first edge area 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered, so that at least part of the first edge area 220 will not affect the flatness of the first side surface 470, which facilitates the subsequent film layer to be overlapped on the first side surface 470, thereby improving the process performance of the display panel 10.

[0051] In some optional embodiments, the substrate 100 may further include a substrate and a circuit layer, and the circuit layer may include a pixel circuit. For example, the circuit layer may include a first conductive layer, a second conductive layer, and a third conductive layer arranged on one side of the substrate and stacked. An inorganic layer or an organic layer is provided between adjacent conductive layers for insulation. Exemplarily, the pixel 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.

[0052] Optionally, as shown in FIG3 , the first electrode 200 has a first bottom surface 240 facing the substrate 100, a first top surface 230 facing away from the substrate 100, and a first sidewall 250 connecting the first top surface 230 and the first bottom surface 240. When the first top surface 230 and the first bottom surface 240 have the same size and the first sidewall 250 extends along the thickness direction Z, the first edge region 220 may be an edge of the first top surface 230 and / or the first bottom surface 240. When the first top surface 230 and the first bottom surface 240 have different sizes and the first sidewall 250 is inclined relative to the thickness direction Z, the region where the first sidewall 250 is located may be considered as the first edge region 220, and the orthographic projection of the first sidewall 250 on the substrate 100 may be considered as the orthographic projection of the first edge region 220 on the substrate 100.

[0053] Optionally, the first electrode 200 further includes a first central region, and the first edge region 220 surrounds the first central region. Optionally, the region other than the first edge region 220 on the first electrode 200 may be the first central region. At least a portion of the orthographic projection of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered: the orthographic projection of the first edge region 220 on one side of the first central region and the orthographic projection of the first side surface 470 on the substrate 100 may be staggered, or the orthographic projection of the first edge region 220 on the central periphery of the first region and the orthographic projection of the first side surface 470 on the substrate 100 may be staggered. As long as at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered, it is sufficient.

[0054] 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, with the light-emitting functional units 510 at least partially located within the isolation opening 460. The second electrode 600 is located on a side of the light-emitting functional layer 500 facing away from the substrate 100. 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.

[0055] 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.

[0056] Optionally, the isolation structure 400 is located between adjacent light-emitting functional parts 510 .

[0057] Optionally, the isolation wall 420 is made of a conductive material, and the second electrode 600 is electrically connected to the isolation wall 420. Optionally, the second electrode 600 is overlapped with the first side surface 470, and the isolation wall 420 provides a power signal to the second electrode 600.

[0058] In the display panel 10 provided in the embodiment of the present application, since the orthographic projection of at least part of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered, at least part of the first edge region 220 will not affect the flatness of the first side surface 470, thereby facilitating the overlap of the second electrode 600 with the first side surface 470, thereby improving the connection yield between the second electrode 600 and the isolation wall 420 and improving the process performance of the display panel 10.

[0059] 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 600 layer, thereby forming the second electrode 600 .

[0060] 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 pixel openings 310 are electrically connected through the isolation structure 400.

[0061] The isolation structure 400 comprises a conductive material, and the second electrodes 600 within at least two adjacent isolation openings 460 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.

[0062] For example, the second electrodes 600 in at least two adjacent isolation openings 460 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.

[0063] In the display panel 10 provided in this embodiment, the second electrodes 600 corresponding to at least two adjacent pixel openings 310 are electrically connected via the isolation structure 400 , so that the display panel 10 can be regionally connected or fully connected.

[0064] 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.

[0065] Optionally, referring again to Figures 1 to 3, the display panel 10 further includes a first insulating layer 300, which is disposed on a side of the first electrode 200 facing away from the substrate 100. The first insulating layer 300 includes a pixel defining portion 350 and a pixel opening 310 enclosed by the pixel defining portion 350. The orthographic projection of the pixel opening 310 on the substrate 100 at least partially overlaps with the orthographic projection of the first electrode 200 on the substrate 100, such that the first electrode 200 can be exposed through the pixel opening 310. Optionally, an isolation structure 400 is located on a side of the first insulating layer 300 facing away from the substrate 100, and the isolation opening 460 communicates with the pixel opening 310, such that the first electrode 200 can be exposed through the isolation opening 460 and the pixel opening 310.

[0066] In these optional embodiments, the first edge region 220 may affect the flatness of the surface of the first insulating layer 300, and the flatness of the first insulating layer 300 may affect the flatness of the isolation structure 400 disposed thereon. By staggering the orthographic projection of at least a portion of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100, at least a portion of the first edge region 220 does not affect the flatness of the first insulating layer 300 below the first side surface 470, and thus does not affect the flatness of the first side surface 470. This facilitates the overlapping of the second electrode 600 with the first side surface 470, improves the connection yield between the second electrode 600 and the isolation wall 420, and enhances the process performance of the display panel.

[0067] As shown in Figures 1 to 4, the first surface 422 and the second surface 423 can be arranged in various ways. For example, the first surface 422 and the second surface 423 can have the same size. In other optional embodiments, the orthographic projection areas of the first surface 422 and the second surface 423 on the substrate 100 are different, so that the first side surface 470 is arranged at an angle, which further facilitates the overlapping of the second electrode 600.

[0068] In some optional embodiments, at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 is located within the orthographic projection of the first surface 422 or the second surface 423 on the substrate 100 having a smaller orthographic projection area.

[0069] In these optional embodiments, the first edge region 220 can extend to the lower side of the smaller one of the first surface 422 and the second surface 423, that is, the first edge region 220 can extend to the lower side of the isolation wall 420, so that the first edge region 220 and the first side surface 470 are staggered, and the first edge region 220 may not affect the flatness of the first side surface 470.

[0070] Optionally, as shown in Figure 5, when 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, at least part of the orthographic projection of the first edge region 220 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100, that is, when the size of the first surface 422 is smaller and the area size of the second surface 423 is larger, at least part of the first edge region 220 is located below the first surface 422, and at least part of the first edge region 220 extends below the first surface 422 to be staggered with the first side surface 470.

[0071] The dotted line A3 in FIG5 does not represent a physical connection line, but rather 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 . 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 gap 210 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100. This can reduce the undulation of the first insulating layer 300, improve the dimensional uniformity of the isolation structure 400, and thereby enhance the display quality of the display panel 10.

[0072] Optionally, along a direction away from the substrate 100, the first side surface 470 is inclined toward a direction away from the isolation opening 460. When the isolation structure 400 is disposed on a side of the first insulating layer 300 away from the substrate 100, the angle between the first side surface 470 and the surface of the first insulating layer 300 exposed by the isolation opening 460 is greater than 90 degrees, thereby facilitating the second electrode 600 to overlap the first side surface 470.

[0073] In some optional embodiments, the orthographic projection of the first edge region 220 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100, or a portion of the orthographic projection of the first edge region 220 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100, and another portion of the orthographic projection of the first edge region 220 on the substrate 100 is staggered from the orthographic projection of the second surface 423 on the substrate 100. That is, as shown in FIG5 , the entire first edge region 220 extends below the first surface 422, or, as shown in FIG4 , a portion of the first edge region 220 extends below the first surface 422, and a portion of the first edge region 220 extends outside the second surface 423 and is staggered from the isolation wall 420. As long as the orthographic projection of the first edge region 220 on the substrate 100 is staggered from the orthographic projection of the first side surface 470 on the substrate 100, it is sufficient.

[0074] The dashed line A2 in Figure 4 is not a physical line, but rather 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 dashed lines A2 in Figure 4. A portion of the first edge region 220 extends below the first surface 422, while a portion of the first edge region 220 extends beyond the second surface 423, staggered with the isolation wall 420.

[0075] In other optional embodiments, as shown in Figure 6, the orthographic projection of the second surface 423 on the substrate 100 is located within the orthographic projection of the first surface 422 on the substrate 100; at least part of the orthographic projection of the first edge area 220 on the substrate 100 is located within the range of the orthographic projection of the second surface 423 on the substrate 100.

[0076] In these optional embodiments, the area of ​​the second surface 423 is smaller, the area of ​​the first surface 422 is larger, and at least part of the orthographic projection of the first edge region 220 on the substrate 100 is located within the range of the orthographic projection of the second surface 423 on the substrate 100, so that at least part of the first edge region 220 extends under the second surface 423 with a smaller area.

[0077] Optionally, along the direction away from the substrate 100 , the first side surface 470 is inclined toward the direction close to the isolation opening 460 , so that a concave can be formed under the first side surface 470 , facilitating the disconnection of the luminescent material here to form independent luminescent functional parts 510 .

[0078] Optionally, a first gap 210 is formed between adjacent first electrodes 200. As shown in FIG6 , optionally, the orthographic projection of the first gap 210 on the substrate 100 is located within the orthographic projection of the second surface 423 of the isolation wall 420 on the substrate 100.

[0079] In some optional embodiments, as shown in Figures 1 to 6, as described above, the display panel 10 further includes a first insulating layer 300, the first insulating layer 300 filling between adjacent first electrodes 200, the isolation structure 400 being disposed on the side of the first insulating layer 300 facing away from the substrate 100, and a first groove 320 being disposed on the side of the first insulating layer 300 facing away from the substrate 100, wherein the orthographic projection of the first groove 320 on the substrate 100 is offset from the orthographic projection of the first electrode 200 on the substrate 100. In these embodiments, due to the presence of the first electrodes 200, the surface of the first insulating layer 300 facing away from the substrate 100 is uneven, and the insulating layer fills the first gap 210 between adjacent first electrodes 200 to form the first groove 320.

[0080] Optionally, as shown in FIG6 , 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. 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 gap 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, thereby reducing the first gap 210, further reducing the undulating area of ​​the first insulating layer 300, and improving the uniformity of the dimensions of the isolation structure 400 (such as the height of the isolation structure 400), thereby improving the display effect of the display panel 10.

[0081] Optionally, at least part of the orthographic projection of the first edge area 220 on the substrate 100 is located within the orthographic projection of the first surface 422 and the second surface 423 on the substrate 100, whichever has the smaller area. Then, the orthographic projection of the first groove 320 on the substrate 100 is located within the orthographic projection of the first surface 422 and the second surface 423 on the substrate 100, and part of the isolation wall 420 is located within the first groove 320.

[0082] In these optional embodiments, as shown in FIG6 or FIG5 , due to the presence of the first electrode 200, a first groove 320 is formed in the first insulating layer 300, and a portion of the isolation wall 420 is located within the first groove 320. That is, the isolation wall 420 completely covers the first groove 320, thereby increasing the contact area between the isolation wall 420 and the first insulating layer 300 and improving the connection yield between the isolation wall 420 and the first insulating layer 300. In some optional embodiments, the orthographic projection of the first groove 320 on the substrate 100 at least partially overlaps with the orthographic projection of the first gap 210 on the substrate 100, and at least a portion of the isolation structure 400 is located within the first groove 320.

[0083] Optionally, at least a portion of the first insulating layer 300 is located in the first gap 210 , so that a first groove 320 is formed on a side of the first insulating layer 300 facing away from the substrate 100 .

[0084] Optionally, the first insulating layer 300 includes a fifth surface 330 and a sixth surface 340. The fifth surface 330 is the upper surface of the first insulating layer 300 facing away from the substrate 100, and the sixth surface 340 is the lower surface of the first 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 gap 210 on the substrate 100 is located within the orthographic projection of the fifth surface 330 on the substrate 100.

[0085] In the display panel 10 provided in the embodiment of the present application, the orthographic projection of the first gap 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 first insulating layer 300. The boundary of the first insulating layer 300 refers to the junction of the fifth surface 330 and the side surface of the first insulating layer 300, which reduces the undulating area of ​​the first 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 10.

[0086] Optionally, 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, and / or, the orthographic projection of the third groove 421 on the substrate 100 is at least partially staggered with the orthographic projection of the first electrode 200 on the substrate 100.

[0087] In some optional embodiments, as shown in FIG6 , the isolation structure 400 may include only an isolation wall 420. The isolation wall 420 includes a first surface 422 and a second surface 423. The first surface 422 is the upper surface of the isolation structure 400 facing away from the substrate 100, and the second surface 423 is the lower surface of the isolation structure 400 facing the substrate 100. The orthographic projection of the second surface 423 on the substrate 100 is located within the orthographic projection of the first surface 422 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.

[0088] Optionally, the orthographic projection of the first gap 210 on the substrate 100 is located within the orthographic projection of the second surface 423 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 first insulating layer, which is beneficial to improving the process performance of the display panel 10.

[0089] Optionally, the isolation structure 400 has an inverted trapezoidal cross-section in the thickness direction Z (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.

[0090] 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 first surface 422 .

[0091] Optionally, in other optional embodiments, as shown in Figures 1 to 5, 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, and 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, and 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.

[0092] 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 gap 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 does not represent a physical connection 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 .

[0093] In some optional embodiments, as shown in FIG. 1 to FIG. 6 , the isolation structure 400 is provided with a second groove 410 on a side facing away from the substrate 100 , and the orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with the orthographic projection of the first groove 320 on the substrate 100 .

[0094] Optionally, the orthographic projection of the second groove 410 on the substrate 100 at least partially overlaps with the orthographic projection of the first gap 210 on the substrate 100 .

[0095] In the display panel 10 provided in the embodiment of the present application, at least a portion of the first insulating layer 300 is located in the first gap 210, so that the first 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 second groove 410 is formed on the side of the isolation structure 400 facing away from the substrate 100.

[0096] 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 optical performance of the display panel 10 is optimized while simultaneously making the components independent of each other. The orthographic projection of the first gap 210 on the substrate 100 lies within the orthographic projection of the barrier portion 430 on the substrate 100. For example, the barrier portion 430 has two opposing surfaces along the thickness direction Z, and the orthographic projection of the first gap 210 on the substrate 100 lies within the orthographic projection of the smaller of the two surfaces 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 first insulating layer 300 and, in turn, reducing undulations in the film layer forming the isolation structure 400 over a larger area. This facilitates the subsequent fabrication of the isolation structure 400 and improves the process performance of the display panel 10.

[0097] 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.

[0098] 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 the barrier portion 430, the aluminum layer and the titanium layer can be dry-etched and then wet-etched to form the isolation structure 400 with a larger top and smaller bottom. By extending the boundary of the first electrode 200 to within the coverage of the barrier portion 430, the effect of the undulations of the aluminum and titanium layers on the dry etching can be reduced, thereby improving the dry etching effect.

[0099] Optionally, the orthographic projection of the third groove 421 on the substrate 100 at least partially overlaps with the orthographic projection of the first gap 210 on the substrate 100. Optionally, the orthographic projection of the third groove 421 on the substrate 100 and the orthographic projection of the first electrode 200 on the substrate 100 are at least partially staggered.

[0100] In the display panel 10 provided in the embodiment of the present application, at least a portion of the first insulating layer 300 is located in the first gap 210, so that the first 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.

[0101] In some alternative embodiments, as shown in Figure 3 , at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 is staggered with the orthographic projection of the isolation wall 420 on the substrate 100. Figure 3 illustrates the boundary of one of the first edges with a dotted line.

[0102] In these optional embodiments, the distribution area of ​​the first electrode 200 is small, and at least part of the first edge region 220 does not extend under the isolation wall 420 to improve the impact of the first edge region 220 on the flatness of the isolation wall 420 .

[0103] Optionally, the orthographic projection of the first edge region 220 on the substrate 100 is staggered from the orthographic projection of the isolation wall 420 on the substrate 100 , that is, the first electrode 200 does not extend under the isolation wall 420 at all, and the first electrode 200 does not affect the flatness of the isolation wall 420 at all.

[0104] 3 , the orthographic projection of the first electrode 200 on the substrate 100 is located within the orthographic projection of the isolation opening 460 on the substrate 100 , so that the first electrode 200 can drive the light-emitting functional portion 510 in the isolation opening 460 to emit light for display.

[0105] As described above, the display panel 10 further includes a first insulating layer 300, and the isolation structure 400 is disposed on a side of the first insulating layer 300 facing away from the substrate 100. Optionally, a first groove 320 is provided on a side of the first insulating layer 300 facing away from the substrate 100, and the orthographic projection of the first groove 320 on the substrate 100 is staggered with the orthographic projection of the first electrode 200 on the substrate 100.

[0106] Optionally, the orthographic projection of the isolation wall 420 between adjacent sub-pixels on the substrate 100 is located within the orthographic projection of the first groove 320 on the substrate 100 .

[0107] In these optional embodiments, due to the presence of a gap between adjacent first electrodes 200, a first groove 320 is formed on the insulating layer, and the orthographic projection of the isolation wall 420 on the substrate 100 is located within the orthographic projection of the first groove 320 on the substrate 100, making it difficult for the edge of the first groove 320 to affect the flatness of the first side surface of the isolation wall 420.

[0108] In some optional embodiments, as shown in FIG3 , the substrate 100 includes a pixel circuit 110 and a first via 120 located between the pixel circuit 110 and the first electrode 200. The pixel circuit 110 and the first electrode 200 are electrically connected via the first via 120. The orthographic projection of the first via 120 on the plane of the substrate 100 and the orthographic projection of the isolation wall 420 on the plane of the substrate 100 are staggered. This improves the flatness of the isolation wall 420 affected by the presence of the first via 120 and improves the yield rate of the overlap between the second electrode 600 and the isolation wall 420.

[0109] In some optional embodiments, as shown in FIG7 , in the thickness direction Z of the substrate 100, the substrate 100 includes a pixel circuit 110 and a first via 120 located between the pixel circuit 110 and the first electrode 200. The orthographic projection of the first via 120 on the plane of the substrate 100 is located within the orthographic projection of the isolation wall 420 on the plane of the substrate 100, and the orthographic projection of the first via 120 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered. This makes it less likely that the first via 120 will affect the flatness of the first side surface 470, thereby improving the overlap yield of the second electrode 600 and the first side surface 470.

[0110] In some optional embodiments, as shown in FIG8 , the display panel 10 further includes an auxiliary electrode 30, which is electrically connected to the first electrode 200 and is used to provide an electrical signal to the first electrode 200. For example, the auxiliary electrode 30 is electrically connected to the pixel circuit 110 through the first via 120. In this embodiment, the auxiliary electrode 30 is provided, and the auxiliary electrode 30 is overlapped with the first electrode 200, so that the voltage signal is transmitted to the first electrode 200 through the auxiliary electrode 30.

[0111] 8 to 10 , the auxiliary electrode 30 is located on the side of the first electrode 200 away from the substrate 100. Covering the first electrode 200 with the auxiliary electrode 30 protects the first electrode 200 from damage during the manufacturing process, thereby improving the integrity of the first electrode 200.

[0112] Optionally, as shown in Figure 11, the auxiliary electrode 30 is in contact with the outer peripheral surface of the first electrode 200, for example, the auxiliary electrode 30 is in contact with the first side wall 250, that is, the auxiliary electrode 30 does not cover the first top surface 230, and the auxiliary electrode 30 is in contact with the first side wall 250, which can improve the flatness of the film layer affected by the setting of the auxiliary electrode 30.

[0113] Optionally, as shown in FIG8 , the orthographic projection of the auxiliary electrode 30 on the substrate 100 overlaps the orthographic projection of the first electrode 200 on the substrate 100. The isolation opening 460 can expose the auxiliary electrode 30. This arrangement can reduce the number of masks and the number of etching times, thereby simplifying the process. Alternatively, as shown in FIG9 and FIG10 , the auxiliary electrode 30 can cover a portion of the first electrode 200 to reduce the distribution area of ​​the auxiliary electrode 30 and improve the excessive height difference of the film layer caused by the installation of the auxiliary electrode 30.

[0114] Optionally, as shown in FIG8 and FIG12 , the orthographic projection of the auxiliary electrode 30 on the substrate 100 partially overlaps with the orthographic projection of the isolation wall 420 on the substrate 100 and covers the first via 120. This allows the auxiliary electrode 30 to extend under the isolation structure 400 and be electrically connected to the pixel circuit 110 through the first via 120 under the isolation structure 400.

[0115] Optionally, along the thickness direction Z of the display panel 10, the thickness of the auxiliary electrode 30 is less than the thickness of the first electrode 200. When connecting to the pixel circuit 110 through the auxiliary electrode 30, even if the auxiliary electrode 30 is located below the isolation structure 400, because the thickness of the auxiliary electrode 30 is less than the thickness of the first electrode 200, the auxiliary electrode 30 has little effect on the flatness of the upper surface of the insulating layer. Compared with the solutions in the prior art, the flatness of the isolation structure 400 can be improved.

[0116] Optionally, as shown in Figures 13 to 15, a light-transmitting hole 480 is provided on the isolation structure 400, and the light-transmitting hole 480 and the isolation opening 460 are spaced apart. The display panel 10 also includes a transparent conductive connection portion 31, which is provided in the same layer as the auxiliary electrode 30, and the isolation structure 400 surrounding the light-transmitting hole 480 is connected to the transparent conductive connection portion 31. Optionally, the isolation structure 400 includes a conductive material that can provide a voltage to the transparent conductive connection portion 31 so that the transparent conductive connection portion 31 plays a shielding role, preventing the touch signal of the upper layer from interfering with the drive signal of the lower layer, causing problems such as poor touch or display. Optionally, the transparent conductive connection portion 31 is in the same layer as the auxiliary electrode 30 and is spaced apart to reduce the number of film layers, which is beneficial to reducing the thickness of the display panel 10. The materials of the transparent conductive connection portion 31 and the auxiliary electrode 30 both include indium tin oxide.

[0117] Optionally, the transparent conductive connecting portion 31 is spaced apart from the auxiliary electrode 30 , and the orthographic projection of the transparent conductive connecting portion 31 on the substrate 100 covers the orthographic projection of the light-transmitting hole 480 on the substrate 100 , thereby improving the shielding effect of the transparent conductive connecting portion 31 .

[0118] Optionally, the first electrode 200 and the transparent conductive connecting portion 31 are spaced apart to improve the short-circuit connection between the first electrode 200 and the transparent conductive portion 270 , and further improve the short-circuit connection between the first electrode 200 and the isolation structure 400 .

[0119] Optionally, the thickness of the auxiliary electrode 30 is 0.01 μm to 0.1 μm, so as to improve the problem that the auxiliary electrode 30 is too thick and affects the flatness of the film layer, or that the auxiliary electrode 30 is too thin and affects the connection between the first electrode 200 and the pixel circuit 110 .

[0120] Optionally, the isolation structure 400 further includes a barrier portion 430 disposed on the side of the isolation wall 420 facing away from the substrate 100, with the orthographic projection of the isolation wall 420 on the substrate 100 located within the orthographic projection of the barrier portion 430 on the substrate 100. This allows for a concave portion to be formed under the barrier portion 430, facilitating the separation of the luminescent material into independent luminescent functional portions 510 at this location, thereby simplifying the preparation of the display surface.

[0121] Optionally, as shown in FIG9 , the orthographic projection of at least a portion of the first edge region 220 on the substrate 100 is offset from the orthographic projection of the isolation structure 400 on the substrate 100. That is, at least a portion of the first edge region 220 does not extend under the isolation structure 400. Optionally, the orthographic projection of the first edge region 220 on the substrate 100 is, for example, located within the orthographic projection of the isolation opening 460 on the substrate 100, and the orthographic projection of the first edge region 220 on the substrate 100 is offset from the orthographic projection of the isolation structure 400 on the substrate 100.

[0122] Optionally, the display panel 10 further includes a first insulating layer 300, which is located on one side of the substrate 100. The isolation structure 400 is located on a side of the first insulating layer 300 facing away from the substrate 100. The first insulating layer 300 includes a pixel defining portion 350 and a pixel opening 310 enclosed by the pixel defining portion 350. The orthographic projection of the pixel opening 310 on the substrate 100 at least partially overlaps with the orthographic projection of the first electrode 200 on the substrate 100, enabling electrical connection between the first electrode 200 and the light-emitting functional portion 510 within the pixel opening 310. As shown in FIG. 8 , area aa is the area where the pixel opening 310 is located. Area bb is the area where the isolation opening 460 is located.

[0123] Optionally, the width of the portion of the pixel defining portion located between two adjacent pixel openings 310 is greater than or equal to 8 μm, so that the pixel defining portion 350 has a sufficiently large size to prevent color mixing or color spots.

[0124] Optionally, as described above, the display panel 10 further includes a light-emitting functional portion 510 and a second electrode 600, wherein at least a portion of the light-emitting functional portion 510 is located in the isolation opening 460, and the second electrode 600 is located on a side of the light-emitting functional portion 510 facing away from the substrate 100. The isolation structure 400 is made of a conductive material, and the second electrode 600 and the isolation wall 420 are electrically connected to each other, thereby enabling multiple second electrodes 600 to be interconnected through the isolation wall 420 to form a surface electrode.

[0125] In some optional embodiments, the distance between two adjacent first electrodes 200 is greater than or equal to 5 μm.

[0126] 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 gap 210 .

[0127] Please refer to Figures 1 to 16 together. The embodiment of the first aspect of the present application also provides a display panel 10, which includes a substrate 100, a first electrode 200, an insulating layer and an isolation structure 400. The first electrode 200 is located on one side of the substrate 100; the insulating layer is located on the side of the first electrode 200 facing away from the substrate 100, the insulating layer encloses to form a pixel opening 310, and the first electrode 200 is at least partially exposed from the pixel opening 310; the isolation structure 400 is arranged on the side of the insulating layer facing away from the substrate 100, wherein the isolation structure 400 includes an isolation wall 420, the isolation wall 420 includes a first surface 422 facing away from the substrate 100 and a second surface 423 facing the substrate 100, the isolation wall 420 also includes a first side surface 470 connecting the first surface 422 and the second surface 423, the surface of the insulating layer facing away from the substrate 100 includes a flat area 302, and the orthographic projection of the first side surface 470 on the substrate 100 is located within the orthographic projection of the flat area 302 on the substrate 100.

[0128] In the display panel 10 provided in the present application, the first electrode 200 is at least partially exposed from the pixel opening 310, enabling the first electrode 200 to drive the multiple light-emitting functional units 510 of the display panel 10 to emit light for display. The isolation structure 400 and the first electrode 200 are disposed on the same side of the substrate 100. The isolation structure 400 is disposed on the side of the insulating layer facing away from the substrate 100. The flatness of the surface of the insulating layer will affect the shape of the isolation structure 400. The surface of the insulating layer facing away from the substrate 100 includes a flat region 302. The surface within the flat region 302 is relatively flat. The orthographic projection of the first side surface 470 on the substrate 100 is located within the orthographic projection of the flat region 302 on the substrate 100. This allows the first side surface 470 to be located correspondingly on the flat region 302. This improves the flatness of the first side surface 470, facilitates the subsequent lamination of film layers, and improves the yield of the display panel 10.

[0129] Alternatively, the flat region 302 may be an area on the surface of the insulating layer facing away from the substrate 100 where the coefficient of friction is low. Alternatively, the flat region 302 may be an area on the surface of the insulating layer facing away from the substrate 100 where the coefficient of friction is low. Alternatively, the flat region 302 may be an area where the insulating layer does not overlap with the edge of the underlying film layer, so that the flat region 302 is not affected by the height difference of the edges of other film layers and thus forms a large height difference. Alternatively, the distance difference between any two points in the flat region 302 and the substrate 100 is less than or equal to a preset threshold, such as 1 μm, 0.1 μm, 0.01 μm, etc., which can be determined by the user based on actual usage requirements.

[0130] In some optional embodiments, as shown in Figure 16, the insulating layer includes a first insulating layer 300 and a second insulating layer 301, the second insulating layer 301 is located in the gap between two adjacent first electrodes 200, and the distance between the side surface of the second insulating layer 301 facing away from the substrate 100 and the substrate 100 along the thickness direction Z of the display panel 10 is equal to the distance between the side surface of the first electrode 200 facing away from the substrate 100 and the substrate 100 along the thickness direction Z of the display panel 10, the first insulating layer 300 is located on the side of the second insulating layer 301 facing away from the substrate 100, and covers the second insulating layer 301 and at least part of the first electrode 200, and the side surface of the first insulating layer 300 facing away from the substrate 100 forms a flat area 302.

[0131] In these optional embodiments, the second insulating layer 301 can be used to fill the first gap 210 between adjacent first electrodes 200 to improve the height difference caused by the provision of the first electrodes 200. Covering the second insulating layer 301 and the first electrodes 200 with the first insulating layer 300 allows the first insulating layer 300 to be provided on a relatively flat surface, thereby improving the flatness of the surface of the first insulating layer 300 and thereby improving the flatness of the isolation structure 400 provided on the first insulating layer 300.

[0132] Alternatively, in other embodiments, as shown in Figures 17 and 18, the surface of the first insulating layer 300 facing away from the substrate 100 includes a first area 303 and a second area 304, the first area 303 forms a first groove 320, the orthographic projection of the first groove 320 on the substrate 100 is staggered with the orthographic projection of the first electrode 200 on the substrate 100, the second insulating layer 301 is located in the first groove 320, the distance between the surface of the second insulating layer 301 facing away from the substrate 100 and the substrate 100 along the thickness direction Z of the display panel 10 is equal to the distance between the second area 304 and the substrate 100 along the thickness direction Z of the display panel 10, and the second area 304 and the surface of the second insulating layer 301 facing away from the substrate 100 form a flat area 302.

[0133] In these optional embodiments, due to the presence of the first electrode 200, at least part of the first insulating layer 300 will fill the first gap 210 between adjacent first electrodes 200, thereby forming a first groove 320 on the first insulating layer 300. By filling the first groove 320 with the second insulating layer 301, the flatness of the surface of the insulating layer can be improved, thereby improving the flatness of the isolation structure 400 arranged on the first insulating layer 300.

[0134] In some optional embodiments, the insulating layer includes a first insulating layer 300. A first groove 320 is provided on a side of the first insulating layer 300 facing away from the substrate 100. The orthographic projection of the first groove 320 on the substrate 100 is staggered with the orthographic projection of the first electrode 200 on the substrate 100. Due to the presence of the first electrodes 200, at least a portion of the first insulating layer 300 fills the first gap 210 between adjacent first electrodes 200, thereby forming the first groove 320 on the first insulating layer 300, and staggering the first groove 320 and the first electrode 200.

[0135] In some optional embodiments, as shown in FIG5 , the orthographic projection of the flat area 302 on the substrate 100 and the orthographic projection of the first groove 320 on the substrate 100 are staggered, or as shown in FIG3 , the orthographic projection of the flat area 302 on the substrate 100 is located at the bottom of the first groove 320 and is within the orthographic projection of the substrate 100. In other words, the flat area 302 is outside the first groove 320, the flat area 302 and the first groove 320 are staggered, and the flat area 302 is relatively flat without a large height difference. Alternatively, the flat area 302 is located within the first groove 320, and the flat area 302 does not pass through the height difference at the edge of the first groove 320, which can also improve the flatness of the flat area 302 and thereby ensure the flatness of the first side surface of the isolation wall.

[0136] In some optional embodiments, the first electrode 200 includes a first edge region 220, and the orthographic projection of the first edge region 220 on the substrate 100 is staggered with the flat region 302. This can reduce the effect of the height difference of the first edge region 220 on the flatness of the flat region 302, thereby reducing the effect on the flatness of the first side surface of the isolation wall and reducing the defective rate of the subsequent film layer overlapping the first side surface of the isolation wall.

[0137] In some optional embodiments, at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 and the orthographic projection of the first side surface 470 on the substrate 100 are staggered, thereby improving the effect of the height difference of the first edge region 220 on the flatness of the first side surface 470 .

[0138] In some optional embodiments, as shown in Figures 4-6, at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 is located within the orthographic projection of the smaller of the first surface 422 and the second surface 423 on the substrate 100; or, as shown in Figure 3, at least a portion of the orthographic projection of the first edge region 220 on the substrate 100 is staggered from the orthographic projection of the isolation wall 420 on the substrate 100. In other words, the first edge region 220 can extend below the isolation wall 420 to stagger the first side surface 470, or the first edge region 220 can extend outside the isolation wall 420 to stagger the first side surface 470, as long as the first side surface 470 is located in a relatively flat area.

[0139] As shown in FIG3 or FIG16 , an embodiment of the first aspect of the present application further provides a display panel 10, comprising a substrate 100, a first electrode 200, and an isolation structure 400. The substrate 100 comprises a pixel circuit 110 and a first via 120; the first electrode 200 is located on one side of the substrate 100 and on a side of the first via 120 facing away from the pixel circuit 110, the first electrode 200 and the pixel circuit 110 being connected via the first via 120; the isolation structure 400 is disposed on one side of the substrate 100 and on the same side of the substrate 100 as the first electrode 200. The isolation structure 400 encloses a plurality of isolation openings 460, the isolation structure 400 and the first electrode 200 are insulated from each other, and at least a portion of the first electrode 200 is exposed through the isolation openings 460. The isolation structure 400 comprises isolation walls 420, and the orthographic projection of the first via 120 on the substrate 100 and the orthographic projection of the isolation walls 420 on the substrate 100 are staggered. This is to improve the effect of providing the first via hole 120 on the flatness of the isolation structure 400 .

[0140] The second aspect of the present application also provides a display device, including 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 described here.

[0141] 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. The display device can be not only the mobile phone shown in Figure 1, but also tablet computers, mobile phones, watches, wearable devices, and electronic devices such as in-vehicle displays, camera displays, televisions, and computer screens.

[0142] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity 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 scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A display panel, wherein: include: substrate; A first electrode, wherein a plurality of first electrode arrays are distributed on one side of the substrate, and the first electrode has a first edge region; an isolation structure, disposed on one side of the substrate and located on the same side of the substrate as the first electrode, the isolation structure enclosing a plurality of isolation openings, the isolation structure and the first electrode being insulated from each other and at least a portion of the first electrode being exposed from the isolation openings; Wherein, the isolation structure includes an isolation wall, and the isolation wall includes a first surface facing away from the substrate and a second surface facing the substrate along the thickness direction of the display panel. The isolation wall also includes a first side surface connecting the first surface and the second surface, and at least part of the first edge area is staggered on the orthographic projection of the substrate and the first side surface is staggered on the orthographic projection of the substrate.

2. The display panel according to claim 1, wherein: The orthographic projection areas of the first surface and the second surface on the substrate are different, and at least part of the orthographic projection of the first edge region on the substrate is located within the orthographic projection of the first surface or the second surface with a smaller orthographic projection area on the substrate.

3. The display panel according to claim 2, wherein: The orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate, and at least a portion of the orthographic projection of the first edge region on the substrate is located within the orthographic projection of the first surface on the substrate.

4. The display panel according to claim 3, wherein: Along a direction away from the substrate, the first side surface is inclined toward a direction away from the isolation opening.

5. The display panel according to claim 3, wherein: The orthographic projection of the first edge region on the substrate is located within the orthographic projection of the first surface on the substrate, or, a portion of the orthographic projection of the first edge region on the substrate is located within the orthographic projection of the first surface on the substrate, and another portion of the orthographic projection of the first edge region on the substrate is located at a position offset from the orthographic projection of the second surface on the substrate.

6. The display panel according to claim 2, wherein: The orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate; at least a portion of the orthographic projection of the first edge region on the substrate is located within the range of the orthographic projection of the second surface on the substrate.

7. The display panel according to claim 6, wherein: Along a direction away from the substrate, the first side surface is inclined toward a direction approaching the isolation opening.

8. The display panel according to claim 2, wherein: The display panel further includes a first insulating layer, which is disposed on a side of the first electrode away from the substrate and fills a space between adjacent first electrodes; The isolation structure is arranged on a side of the first insulating layer away from the substrate. A first groove is provided on the side of the first insulating layer away from the substrate. The orthographic projection of the first groove on the substrate is staggered with the orthographic projection of the first electrode on the substrate.

9. The display panel according to claim 8, wherein: The orthographic projection of the first groove on the substrate is located within the orthographic projection range of the smaller one of the first surface and the second surface on the substrate, and part of the isolation wall is located in the first groove.

10. The display panel according to claim 9, wherein: A third groove is provided on a side of the isolation wall facing away from the substrate. 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; And / or, an orthographic projection of the third groove on the substrate and an orthographic projection of the first electrode on the substrate are at least partially staggered.

11. The display panel according to claim 10, wherein: The isolation structure also includes: A blocking portion 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, at least part of the blocking portion is located in the third groove, and a second groove is provided on the side of the isolation portion facing 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.

12. The display panel according to claim 1, wherein: The orthographic projection of the first edge area on the substrate is staggered with the orthographic projection of the isolation wall on the substrate.

13. The display panel according to claim 12, wherein: The orthographic projection of the first electrode on the substrate is located within the orthographic projection of the isolation opening on the substrate.

14. The display panel according to claim 12, wherein: The display panel also includes a first insulating layer, which is arranged on a side of the first electrode away from the substrate. The isolation structure is arranged on a side of the first insulating layer away from the substrate. A first groove is provided on the side of the first insulating layer away from the substrate. The orthographic projection of the first groove on the substrate is staggered with the orthographic projection of the first electrode on the substrate.

15. The display panel according to claim 14, wherein: The orthographic projection of the isolation wall between adjacent sub-pixels on the substrate is within the orthographic projection range of the first groove on the substrate.

16. The display panel according to claim 12, wherein: The substrate includes a pixel circuit and a first via located between the pixel circuit and the first electrode, the pixel circuit and the first electrode are electrically connected through the first via hole, and the orthographic projection of the first via hole on the plane where the substrate is located and the orthographic projection of the isolation wall on the plane where the substrate is located are staggered.

17. The display panel according to claim 12, wherein: In the thickness direction of the substrate, the substrate includes a pixel circuit and a first via located between the pixel circuit and the first electrode, the orthographic projection of the first via on the plane where the substrate is located is located within the orthographic projection range of the isolation wall on the plane where the substrate is located, and the orthographic projection of the first via on the substrate and the orthographic projection of the first side on the substrate are staggered.

18. The display panel according to claim 17, wherein: The display panel further includes an auxiliary electrode, the auxiliary electrode is electrically connected to the first electrode, and the auxiliary electrode is electrically connected to the pixel circuit through the first via hole Wherein, the auxiliary electrode is located on a side of the first electrode away from the substrate; And / or, the auxiliary electrode is in contact with an outer peripheral surface of the first electrode.

19. The display panel according to claim 18, wherein: The orthographic projection of the auxiliary electrode on the substrate partially overlaps with the orthographic projection of the isolation wall on the substrate and covers the first via hole; and / or, along the thickness direction of the display panel, the thickness of the auxiliary electrode is smaller than the thickness of the first electrode; And / or, the auxiliary electrode has a thickness of 0.01 μm to 0.1 μm.

20. The display panel according to claim 18, wherein: A light-transmitting hole is provided on the isolation structure, and the light-transmitting hole and the isolation opening are arranged at intervals. The display panel also includes a transparent conductive connecting portion, and the transparent conductive connecting portion is arranged in the same layer as the auxiliary electrode and is arranged at intervals. The isolation structure surrounding the light-transmitting hole is connected to the transparent conductive connecting portion, and the orthographic projection of the transparent conductive connecting portion on the substrate covers the orthographic projection of the light-transmitting hole on the substrate.

21. The display panel according to claim 1, wherein: The isolation structure further includes a blocking portion disposed on a side of the isolation wall facing away from the substrate, and an orthographic projection of the isolation wall on the substrate is located within an orthographic projection of the blocking portion on the substrate.

22. The display panel according to claim 1, wherein: The display panel also includes a first insulating layer, which is arranged on a side of the first electrode facing away from the substrate. The isolation structure is arranged on a side of the first insulating layer facing away from the substrate. The first insulating layer includes a pixel defining portion, which encloses a pixel opening. The orthographic projection of the pixel opening on the substrate at least partially overlaps with the orthographic projection of the first electrode on the substrate.

23. The display panel according to claim 1, wherein: It also includes a light-emitting functional part and a second electrode, at least part of the light-emitting functional part is located in the isolation opening, and the second electrode is located on a side of the light-emitting functional part away from the substrate, The material of the isolation structure includes a conductive material, and the second electrode and the isolation wall are electrically connected to each other.

24. A display panel, wherein: include: substrate; A first electrode is located on one side of the substrate, an insulating layer, located on a side of the first electrode facing away from the substrate, the insulating layer enclosing a pixel opening, and the first electrode at least partially exposed from the pixel opening; An isolation structure is arranged on a side of the insulating layer away from the substrate, Wherein, the isolation structure includes an isolation wall, the isolation wall includes a first surface facing away from the substrate and a second surface facing the substrate, the isolation wall also includes a first side surface connecting the first surface and the second surface, the surface of the insulating layer facing away from the substrate includes a flat area, and the orthographic projection of the first side surface on the substrate is located within the orthographic projection of the flat area on the substrate.

25. The display panel according to claim 24, wherein: Also includes: The insulating layer comprises a first insulating layer and a second insulating layer, wherein: The second insulating layer is located in a gap between two adjacent first electrodes, and a distance between a surface of the second insulating layer facing away from the substrate and the substrate along a thickness direction of the display panel is equal to a distance between a surface of the first electrode facing away from the substrate and the substrate along the thickness direction of the display panel, and the first insulating layer is located on a side of the second insulating layer facing away from the substrate and covers the second insulating layer. The first insulating layer and at least a portion of the first electrode, the first insulating layer having a surface facing away from the substrate forming the flat area; Alternatively, a surface on one side of the first insulating layer facing away from the substrate includes a first area and a second area, the first area forms a first groove, the first groove is staggered with an orthographic projection of the substrate and an orthographic projection of the first electrode on the substrate, the second insulating layer is located in the first groove, the distance between the surface on the side of the second insulating layer facing away from the substrate and the substrate in the thickness direction of the display panel is equal to the distance between the second area and the substrate in the thickness direction of the display panel, and the second area and the surface on the side of the second insulating layer facing away from the substrate form the flat area.

26. The display panel according to claim 24, wherein: The insulating layer comprises a first insulating layer, a first groove is provided on a side of the first insulating layer facing away from the substrate, and an orthographic projection of the first groove on the substrate is staggered with an orthographic projection of the first electrode on the substrate.

27. The display panel according to claim 26, wherein: The orthographic projection of the flat area on the substrate and the orthographic projection of the first groove on the substrate are staggered, or the orthographic projection of the flat area on the substrate is located at a bottom of the first groove within the orthographic projection range of the substrate.

28. The display panel according to claim 26, wherein: The first electrode includes a first edge region, and the first edge region is staggered between the orthographic projection of the substrate and the flat region.

29. The display panel according to claim 28, wherein: At least a portion of the first edge region is staggered in an orthographic projection of the substrate and an orthographic projection of the first side surface on the substrate.

30. The display panel according to claim 29, wherein: At least part of the orthographic projection of the first edge region on the substrate is located within the orthographic projection of the first surface or the second surface on the substrate with a smaller orthographic projection area on the substrate; Alternatively, at least a portion of the orthographic projection of the first edge region on the substrate is staggered with the orthographic projection of the isolation wall on the substrate.

31. A display panel, wherein: include: A substrate including a pixel circuit and a first via hole; a first electrode, located at one side of the substrate and at a side of the first via hole away from the pixel circuit, the first electrode and the pixel circuit being electrically connected through the first via hole; an isolation structure, which is disposed on one side of the substrate and is located on the same side of the substrate as the first electrode, the isolation structure encloses a plurality of isolation openings, the isolation structure and the first electrode are insulated from each other and at least a portion of the first electrode is exposed from the isolation openings, The isolation structure includes an isolation wall, and the orthographic projection of the first via hole on the substrate and the orthographic projection of the isolation wall on the substrate are staggered.

32. A display device, wherein: A display panel comprising any one of claims 1-32.

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