Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises an array substrate, a first electrode layer, a light-emitting functional structure and a second electrode. The first electrode layer comprises a first electrode and auxiliary electrodes, the first electrode and the second electrode are located on the two sides of the light-emitting functional structure respectively and serve as electrodes of the light-emitting functional structure to drive the light-emitting functional structure to emit light, light-emitting display of the display panel is achieved, and the multiple ends of the second electrode are electrically connected with at least one auxiliary electrode in the array substrate. Therefore, the first power supply voltage is provided for the second electrode. The side, away from the array substrate, of at least one auxiliary electrode is electrically connected with at least one second electrode, the overall resistance of the second electrodes and the auxiliary electrodes is reduced, the voltage drop and the power consumption are reduced, and the problem that the light-emitting function structures arranged in the first direction are correspondingly arranged due to the fact that the second electrodes are thin-strip-shaped is solved. And the second electrode is easy to generate relatively large voltage drop and power consumption.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) and flat-panel displays based on LED technologies have become mainstream in consumer electronics, including mobile phones, televisions, laptops, and desktop computers, due to their advantages of high image quality, power efficiency, thinness, and wide application range. However, the performance of current OLED display products needs to be improved. Summary of the Invention

[0003] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, aiming to improve the performance of OLED display products.

[0004] A first aspect of the present application provides a display panel, comprising: an array substrate; a first electrode layer, located on one side of the array substrate, comprising a plurality of first electrodes and at least one auxiliary electrode, wherein the at least one auxiliary electrode extends along a first direction; a plurality of light-emitting functional structures, wherein the light-emitting functional structures are located on a side of the corresponding first electrodes facing away from the array substrate; at least one second electrode, located on a side of the plurality of light-emitting functional structures facing away from the array substrate, comprising a plurality of end portions located in a second direction intersecting with the first direction; wherein the plurality of end portions are electrically connected to the at least one auxiliary electrode in the array substrate and are configured with a first power supply voltage, and the at least one auxiliary electrode is connected to the at least one second electrode on a side facing away from the array substrate.

[0005] According to an embodiment of the first aspect of the present application, the array substrate includes: a substrate; at least one shielding structure corresponding to at least one auxiliary electrode, the at least one shielding structure is located between the substrate and the first electrode layer and encloses at least one gap; wherein the orthographic projection of the at least one gap on the substrate is located within the orthographic projection of the at least one auxiliary electrode on the substrate.

[0006] According to any of the aforementioned embodiments of the first aspect of the present application, at least one auxiliary electrode includes multiple auxiliary electrodes, the multiple auxiliary electrodes are arranged along the second direction, and at least one shielding structure includes multiple shielding structures corresponding to the multiple auxiliary electrodes, and the shielding structure is arranged between the substrate and the corresponding auxiliary electrodes.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the at least one gap includes a plurality of gaps, and two adjacent shielding structures enclose one gap corresponding to one auxiliary electrode.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, at least one gap includes multiple gaps, a shielding structure encloses multiple gaps corresponding to an auxiliary electrode, and the orthographic projection of the gap on the substrate is located within the orthographic projection of at least one second electrode on the substrate.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the edge of the orthographic projection of the auxiliary electrode on the substrate is located within the orthographic projection of the corresponding shielding structure on the substrate.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the width of the gap in the second direction is not greater than 3 μm and not less than 1 μm.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, in a direction perpendicular to the array substrate, the thickness of the shielding structure is no more than 0.1 μm.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the shielding structure includes a light-shielding material.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the shielding structure includes a metal material, and the metal material includes at least one of molybdenum, copper, titanium, tungsten and a metal alloy.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the array substrate also includes a first organic insulating layer, which is arranged between at least one blocking structure and the first electrode layer, and includes multiple first through holes, and at least one blocking structure and at least one auxiliary electrode are electrically connected through the multiple first through holes.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the multiple end portions and at least one shielding structure are electrically connected in the array substrate.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the first electrode includes a first sub-section, a second sub-section, and a third sub-section stacked in sequence in a direction away from the array substrate; at least one auxiliary electrode includes a fourth sub-section and a fifth sub-section stacked in sequence in a direction away from the array substrate; wherein the first sub-section and the fourth sub-section are arranged in the same layer and the same material, and the second sub-section and the fifth sub-section are arranged in the same layer and the same material.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, in a direction perpendicular to the array substrate, the thickness of the second sub-section is greater than the thickness of the fifth sub-section.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the side of the fifth sub-section facing away from the array substrate includes at least one pit recessed toward the array substrate, the orthographic projection of the at least one pit on the substrate is located within the orthographic projection of the at least one gap on the substrate, and the thickness of the second sub-section is greater than the thickness of the fifth sub-section at the position of the at least one pit.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, at least one second electrode is electrically connected to the fifth sub-section at at least one pit position.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the material of at least one auxiliary electrode includes at least one of a transparent conductive material and a metal element material, the transparent conductive material includes at least one of indium tin oxide and indium zinc oxide, and the metal element material includes at least one of molybdenum, copper, titanium, tungsten and silver.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the materials of the first sub-section, the third sub-section and the fourth sub-section include transparent conductive materials, and the materials of the second sub-section and the fifth sub-section include metal element materials.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the materials of the first sub-section, the third sub-section and the fourth sub-section include indium tin oxide, and the materials of the second sub-section and the fifth sub-section include silver.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, in a direction perpendicular to the array substrate, the thickness of the second sub-portion and the fifth sub-portion is not greater than 0.02 μm.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes: a pixel definition layer located on one side of the array substrate, the pixel definition layer including multiple pixel openings and multiple second through holes, at least one second electrode electrically connected to at least one auxiliary electrode through the multiple second through holes; wherein, part of the first electrode is exposed from the corresponding pixel opening, and another part is located between the pixel definition layer and the array substrate, and part of at least one auxiliary electrode is exposed from the multiple second through holes, and another part is located between the pixel definition layer and the array substrate.

[0025] According to any of the foregoing embodiments of the first aspect of the present application, the pixel definition layer also includes a plurality of third through holes, the third through holes are located on the side of the corresponding end close to the array substrate, the array substrate also includes a first organic insulating layer, the first organic insulating layer is arranged close to the first electrode layer and includes a plurality of fourth through holes, the fourth through holes are arranged corresponding to the third through holes, and the end is electrically connected to at least one auxiliary electrode in the array substrate through the corresponding third through holes and fourth through holes.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the at least one second electrode includes a second electrode, the second electrode is located on a side of the multiple light-emitting functional structures away from the array substrate, and the multiple light-emitting functional structures are an integrated structure.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes: an isolation structure, which is located on the side of the pixel definition layer away from the array substrate and encloses a plurality of isolation openings, and the isolation openings are connected to the corresponding pixel openings; wherein, the same isolation opening accommodates a plurality of light-emitting functional structures with the same light-emitting color, and at least one second electrode includes a plurality of second electrodes, which are located in the corresponding isolation openings and on the side of the plurality of light-emitting functional structures with the same light-emitting color away from the array substrate.

[0028] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes an encapsulation layer located on a side of at least one second electrode facing away from the array substrate and extending from a side wall of the isolation structure to a side of the isolation structure facing away from the array substrate.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the first organic insulating layer electrically isolates the multiple first electrodes and at least one shielding structure, and the orthographic projections of the multiple first electrodes on the substrate are located within the orthographic projection of the at least one shielding structure on the substrate.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, at least one auxiliary electrode includes a plurality of auxiliary electrodes spaced apart in the second direction, wherein: the orthographic projection of the same auxiliary electrode on the array substrate passes through the orthographic projections of the plurality of isolation openings on the array substrate, and the orthographic projections of the plurality of auxiliary electrodes on the array substrate pass through the orthographic projection of the same isolation opening on the array substrate.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes two first sections extending along the first direction and multiple second sections extending along the second direction, and the two first sections and the multiple second sections enclose multiple isolation openings.

[0032] An embodiment of the second aspect of the present application provides a display device, which includes the display panel of any of the above embodiments.

[0033] An embodiment of a third aspect of the present application provides a method for manufacturing a display panel, including:

[0034] providing an array substrate;

[0035] forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on one side of the array substrate, wherein the at least one auxiliary electrode extends along a first direction;

[0036] forming a plurality of light-emitting functional structures on a side of the plurality of first electrodes away from the array substrate;

[0037] At least one second electrode is formed on a side of the plurality of light-emitting functional structures facing away from the array substrate, the at least one second electrode includes a plurality of ends located in a second direction intersecting with the first direction, the plurality of ends are electrically connected to at least one auxiliary electrode in the array substrate and are configured with a first power supply voltage, and the at least one auxiliary electrode is connected to the at least one second electrode on a side facing away from the array substrate.

[0038] According to an embodiment of the third aspect of the present application, the step of providing an array substrate includes:

[0039] providing a substrate;

[0040] At least one shielding structure is formed on one side of the substrate, and the at least one shielding structure encloses at least one gap;

[0041] The step of forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on one side of the array substrate comprises:

[0042] forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on a side of the at least one shielding structure facing away from the substrate, and ensuring that an orthographic projection of the at least one gap on the substrate is located within an orthographic projection of the at least one auxiliary electrode on the substrate;

[0043] The step of forming a plurality of light-emitting functional structures on a side of the plurality of first electrodes facing away from the array substrate includes:

[0044] forming a pixel definition material layer on a side of the first electrode layer facing away from the array substrate;

[0045] forming a plurality of pixel openings and a plurality of second through holes on the pixel definition material layer to obtain a pixel definition layer, wherein the pixel openings expose the corresponding first electrodes, and the plurality of second through holes expose at least one auxiliary electrode;

[0046] forming a light-emitting functional material layer in the plurality of pixel openings, in the plurality of second through holes, and on a side of the pixel definition layer facing away from the substrate;

[0047] On a side of the substrate facing away from the at least one shielding structure, irradiating at least one gap with a laser to remove the light-emitting functional material layer located in the plurality of second through holes by ashing, thereby obtaining a plurality of light-emitting functional structures located on a side of the plurality of first electrodes facing away from the array substrate;

[0048] The step of forming at least one second electrode on a side of the plurality of light-emitting functional structures facing away from the array substrate includes:

[0049] At least one second electrode is formed in the plurality of light-emitting functional structures and the plurality of second through holes so that the at least one second electrode is electrically connected to a side of the at least one auxiliary electrode facing away from the array substrate, wherein the at least one second electrode includes a plurality of end portions located in a second direction intersecting with the first direction, and the plurality of end portions are electrically connected to the at least one auxiliary electrode in the array substrate and are configured with a first power supply voltage.

[0050] According to any of the aforementioned embodiments of the third aspect of the present application, the laser includes at least one of a point spot and a linear spot.

[0051] According to any of the aforementioned embodiments of the third aspect of the present application, the laser is at least one of an infrared laser, a far-infrared laser and a near-infrared laser, and the wavelength range of the laser is not less than 750 nm and not greater than 1000 μm.

[0052] According to the display panel of the embodiment of the present application, the display panel includes an array substrate, a first electrode layer, a light-emitting functional structure, and a second electrode. The first electrode layer includes a first electrode and an auxiliary electrode. The first electrode and the second electrode are respectively located on both sides of the light-emitting functional structure, serving as electrodes of the light-emitting functional structure, driving the light-emitting functional structure to emit light, thereby realizing light-emitting display of the display panel. Multiple ends of the second electrode are electrically connected to at least one auxiliary electrode in the array substrate, thereby providing a first power supply voltage to the second electrode. At least one auxiliary electrode is electrically connected to at least one second electrode on a side facing away from the array substrate, thereby reducing the overall resistance of the second electrode and the auxiliary electrode, reducing the voltage drop and power consumption, and improving the problem that the second electrode is easily prone to large voltage drop and power consumption due to the second electrode being arranged in correspondence with the multiple light-emitting functional structures arranged in the first direction and the second electrode being in a thin strip shape, thereby improving the performance of the OLED display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0054] Figure 1 is a partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0055] Figure 2 is a partial top view schematic diagram of a display panel provided in an embodiment of the present application;

[0056] Figure 3 is a partial cross-sectional view of a display panel in another embodiment;

[0057] Figure 4 is a partial cross-sectional view of a display panel in yet another embodiment;

[0058] Figure 5 is a partial cross-sectional view of a display panel in yet another embodiment;

[0059] Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment;

[0060] Figure 7 is a partial cross-sectional view of a display panel in yet another embodiment;

[0061] Figure 8 is a partial cross-sectional view of a display panel in yet another embodiment;

[0062] Figure 9 is a partial cross-sectional view of a display panel in yet another embodiment;

[0063] Figure 10 is a partial cross-sectional view of a display panel in yet another embodiment;

[0064] Figure 11 is a partial top view schematic diagram of a display panel in another embodiment;

[0065] Figure 12 is a partial cross-sectional view of a display panel in yet another embodiment;

[0066] Figure 13 This is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0067] Figures 14 to 21 This is a diagram of the preparation process of a display panel provided in an embodiment of the present application.

[0068] Description of reference numerals:

[0069] 10. Display panel;

[0070] 100, array substrate; 110, substrate; 120, shielding structure; 121, gap; 130, first organic insulating layer; 131, first through hole; 132, fourth through hole;

[0071] 200, isolation structure; 201, first subsection; 202, second subsection; 210, first floor; 220, second floor; 230, third floor; 240, isolation opening;

[0072] 300. Light-emitting functional structure;

[0073] 400, first electrode layer; 410, first electrode; 411, first sub-section; 412, second sub-section; 413, third sub-section; 420, auxiliary electrode; 421, fourth sub-section; 422, fifth sub-section; 423, pit;

[0074] 500, second electrode; 510, end portion;

[0075] 600, pixel definition layer; 610, pixel opening; 620, second through hole; 630, third through hole;

[0076] 700, encapsulation layer;

[0077] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0078] 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 configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0079] 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.

[0080] 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.

[0081] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. Hereinafter, various embodiments of the display panel, the display device, and the method for manufacturing a display panel will be described with reference to the accompanying drawings.

[0082] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0083] Please also refer to Figures 1 to 4 , Figure 1 is a partial cross-sectional view of a display panel provided in an embodiment of the present application; Figure 2 is a partial top view schematic diagram of a display panel provided in an embodiment of the present application;

[0084] Figure 3 is a partial cross-sectional view of a display panel in another embodiment; Figure 4 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0085] like Figures 1 to 4 As shown, the first embodiment of the present application provides a display panel 10, which includes: an array substrate 100; a first electrode layer 400, located on one side of the array substrate 100, including a plurality of first electrodes 410 and at least one auxiliary electrode 420, and the at least one auxiliary electrode 420 extends along a first direction X; a plurality of light-emitting functional structures 300, and the light-emitting functional structures 300 are located on the side of the corresponding first electrodes 410 away from the array substrate 100; at least one second electrode 500, located on the side of the plurality of light-emitting functional structures 300 away from the array substrate 100, including a plurality of end portions 510 located in a second direction Y intersecting with the first direction X; wherein the plurality of end portions 510 are electrically connected to the at least one auxiliary electrode 420 in the array substrate 100 and are configured with a first power supply voltage, and the side of the at least one auxiliary electrode 420 away from the array substrate 100 is connected to the at least one second electrode 500.

[0086] According to the display panel 10 of the embodiment of the present application, the display panel 10 includes an array substrate 100, a first electrode layer 400, a light-emitting functional structure 300, and a second electrode 500. The first electrode layer 400 includes a first electrode 410 and an auxiliary electrode 420. The first electrode 410 and the second electrode 500 are respectively located on either side of the light-emitting functional structure 300 and serve as electrodes of the light-emitting functional structure 300, driving the light-emitting functional structure 300 to emit light, thereby achieving light-emitting display of the display panel 10. The multiple ends 510 of the second electrode 500 are electrically connected to at least one auxiliary electrode 420 in the array substrate 100, thereby providing a first power supply voltage to the second electrode 500. At least one auxiliary electrode 420 is electrically connected to at least one second electrode 500 on a side facing away from the array substrate 100, thereby reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, reducing the voltage drop and power consumption, and improving the problem that the second electrode 500 is easily prone to large voltage drop and power consumption due to the second electrode 500 being arranged in a corresponding manner to the multiple light-emitting functional structures 300 arranged in the first direction X and the second electrode 500 being in a thin strip shape, thereby improving the performance of the OLED display product.

[0087] See also Figure 5 , Figure 5 FIG. 4 is a partial cross-sectional view of a display panel in yet another embodiment.

[0088] like Figure 5 As shown, in some optional embodiments, the array substrate 100 includes: a substrate 110; at least one shielding structure 120 corresponding to at least one auxiliary electrode 420, and the at least one shielding structure 120 is located between the substrate 110 and the first electrode layer 400 and encloses at least one gap 121; wherein the orthographic projection of at least one gap 121 on the substrate 110 is located within the orthographic projection of at least one auxiliary electrode 420 on the substrate 110.

[0089] In these optional embodiments, a gap 121 is formed between two adjacent shielding structures 120, and the orthographic projection of at least one gap 121 on the substrate 110 is set within the orthographic projection of at least one auxiliary electrode 420 on the substrate 110. When laser etching is performed, the shielding structure 120 can block the laser to serve as a mask for laser etching. The laser burns the position of the auxiliary electrode 420 through the gap 121, so that the material on the upper part of the auxiliary electrode 420 is etched and the auxiliary electrode 420 is exposed. When the second electrode 500 is subsequently prepared, the second electrode 500 can be in contact and electrically connected with the auxiliary electrode 420, thereby reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, and reducing the voltage drop and power consumption.

[0090] In some optional embodiments, at least one auxiliary electrode 420 includes multiple auxiliary electrodes 420, and the multiple auxiliary electrodes 420 are arranged along the second direction Y. At least one shielding structure 120 includes multiple shielding structures 120 corresponding to the multiple auxiliary electrodes 420, and the shielding structure 120 is arranged between the substrate 110 and the corresponding auxiliary electrode 420.

[0091] The correspondence between the auxiliary electrodes 420 and the shielding structures 120 means that the orthographic projections of the gaps 121 formed by the shielding structures 120 on the substrate 110 are located within the orthographic projections of the auxiliary electrodes 420 on the substrate 110 .

[0092] In these optional embodiments, a plurality of shielding structures 120 are provided corresponding to the plurality of auxiliary electrodes 420, and the positive projection of the gap 121 formed by each shielding structure 120 on the substrate 110 is provided within the positive projection of each auxiliary electrode 420 on the substrate 110. When laser etching is performed, the plurality of shielding structures 120 can shield the laser to serve as a mask for laser etching. The laser burns the position of each auxiliary electrode 420 through the gap 121, so that the material on the upper part of each auxiliary electrode 420 is etched, and the plurality of auxiliary electrodes 420 are exposed. When the second electrode 500 is subsequently prepared, the second electrode 500 can be in contact and electrically connected with the plurality of auxiliary electrodes 420, thereby further reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, and reducing the voltage drop and power consumption.

[0093] In some optional embodiments, the at least one gap 121 includes a plurality of gaps 121 , and two adjacent shielding structures 120 enclose one gap 121 corresponding to one auxiliary electrode 420 .

[0094] In these optional embodiments, the positive projection of the gap 121 formed by each shielding structure 120 on the substrate 110 is set within the positive projection of each auxiliary electrode 420 on the substrate 110. When laser etching is performed, the multiple shielding structures 120 can block the laser to serve as a mask for laser etching. The laser burns the position of each auxiliary electrode 420 through the gap 121, so that the material on the upper part of each auxiliary electrode 420 is etched, and the multiple auxiliary electrodes 420 are exposed. When the second electrode 500 is subsequently prepared, the second electrode 500 can be in contact and electrically connected with the multiple auxiliary electrodes 420, further reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, and reducing the voltage drop and power consumption.

[0095] In some optional embodiments, at least one gap 121 includes multiple gaps 121, and a shielding structure 120 encloses multiple gaps 121 corresponding to an auxiliary electrode 420, and the orthographic projection of the gap 121 on the substrate 110 is located within the orthographic projection of at least one second electrode 500 on the substrate 110.

[0096] In these optional embodiments, the positive projections of multiple gaps 121 formed by a shielding structure 120 on the substrate 110 are set within the positive projection of an auxiliary electrode 420 on the substrate 110. When laser etching is performed, the shielding structure 120 can shield the laser to serve as a mask for laser etching. The laser burns the position of the auxiliary electrode 420 through the multiple gaps 121 formed by the same shielding structure 120, so that the material at multiple positions on the same auxiliary electrode 420 is etched, and the auxiliary electrode 420 is exposed through multiple positions. When the second electrode 500 is subsequently prepared, the second electrode 500 can be in contact and electrically connected with the same auxiliary electrode 420 at multiple positions, thereby improving the overlapping performance of the second electrode 500 and the same auxiliary electrode 420, further reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, and reducing voltage drop and power consumption.

[0097] Optionally, the edge of the orthographic projection of the auxiliary electrode 420 on the substrate 110 is located within the orthographic projection of the corresponding shielding structure 120 on the substrate 110, so that the orthographic projection of the gap 121 formed by the shielding structure 120 on the substrate 110 is located within the orthographic projection of the auxiliary electrode 420 on the substrate 110, thereby avoiding burning of areas outside the auxiliary electrode 420.

[0098] In some optional embodiments, the width of the gap 121 in the second direction Y is not greater than 3 μm and not less than 1 μm.

[0099] For example, the width of the gap 121 in the second direction Y is 1 μm, 1.5 μm, 2 μm, or 3 μm.

[0100] In these optional embodiments, the width of the gap 121 in the second direction Y is greater than or equal to 1 μm, which can improve the problem that the width of the gap 121 in the second direction Y is too small, resulting in a small range of laser burning through the gap 121, making it difficult to completely burn the material above the auxiliary electrode 420, making it difficult to expose the auxiliary electrode 420, and making it difficult for the second electrode 500 to contact the underlying auxiliary electrode 420. The width of the gap 121 in the second direction Y is less than or equal to 3 μm, which can improve the problem that the width of the gap 121 in the second direction Y is too large, resulting in a large range of laser burning through the gap 121, squeezing out pixel space, that is, the distance between adjacent light-emitting functional structures 300 is too large, and the pixel density (Pixels Per Inch, PPI) of the display panel 10 is reduced.

[0101] Optionally, the thickness of the shielding structure 120 in a direction perpendicular to the array substrate 100 is not greater than 0.1 μm. For example, the thickness of the shielding structure 120 is 0.02 μm, 0.05 μm, 0.08 μm, or 0.1 μm, to avoid the problem of excessive thickness of the shielding structure 120 leading to increased material costs and film thickness of the display panel 10.

[0102] Optionally, the material of the shielding structure 120 includes a light-shielding material to shield the laser and serve as a mask for laser etching.

[0103] Optionally, the material of the shielding structure 120 includes a metal material, and the metal material includes at least one of molybdenum, copper, titanium, tungsten and a metal alloy, as long as it can shield the laser.

[0104] See also Figure 6 , Figure 6 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0105] like Figure 6 As shown, in some optional embodiments, the array substrate 100 also includes a first organic insulating layer 130, which is arranged between at least one shielding structure 120 and the first electrode layer 400, and includes a plurality of first through holes 131, and at least one shielding structure 120 and at least one auxiliary electrode 420 are electrically connected through the plurality of first through holes 131.

[0106] In these optional embodiments, the first organic insulating layer 130 is disposed between the shielding structure 120 and the first electrode layer 400. The shielding structure 120 can be fabricated simultaneously with the other metal layers of the array substrate 100, simplifying the fabrication process. At least one shielding structure 120 and at least one auxiliary electrode 420 are electrically connected via a plurality of first through-holes 131. The shielding structure 120 is electrically connected to the auxiliary electrode 420 via the first through-holes 131, and power is supplied to the second electrode 500 via the auxiliary electrode 420.

[0107] Optionally, the plurality of end portions 510 and at least one shielding structure 120 are electrically connected in the array substrate 100 , so that power is supplied to the second electrode 500 through the shielding structure 120 .

[0108] See also Figure 7 , Figure 7 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0109] like Figure 7As shown, in some optional embodiments, the first electrode 410 includes a first sub-portion 411, a second sub-portion 412 and a third sub-portion 413 which are stacked in sequence in a direction away from the array substrate 100; at least one auxiliary electrode 420 includes a fourth sub-portion 421 and a fifth sub-portion 422 which are stacked in sequence in a direction away from the array substrate 100; wherein the first sub-portion 411 and the fourth sub-portion 421 are arranged in the same layer and the same material, and the second sub-portion 412 and the fifth sub-portion 422 are arranged in the same layer and the same material.

[0110] In these optional embodiments, the first sub-portion 411 and the fourth sub-portion 421 are provided in the same layer and the same material, and the fourth sub-portion 421 of the auxiliary electrode 420 can be fabricated simultaneously with the first sub-portion 411 of the first electrode 410, simplifying the fabrication process. The second sub-portion 412 and the fifth sub-portion 422 are provided in the same layer and the same material, and the fifth sub-portion 422 of the auxiliary electrode 420 can be fabricated simultaneously with the second sub-portion 412 of the first electrode 410, simplifying the fabrication process.

[0111] Optionally, in a direction perpendicular to the array substrate 100, the thickness of the second sub-portion 412 is greater than the thickness of the fifth sub-portion 422, and the thickness of the fifth sub-portion 422 of the auxiliary electrode 420 is set to be smaller, thereby reducing the resistance of the auxiliary electrode 420 and further reducing the power consumption after the auxiliary electrode 420 and the second electrode 500 are overlapped. In addition, during the laser ablation process, the fifth sub-portion 422 is partially burned and lost, while the morphology of the second sub-portion 412 is intact and not damaged by the laser. Therefore, the thickness of the fifth sub-portion 422 is smaller than that of the second sub-portion 412.

[0112] See also Figure 8 , Figure 8 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0113] like Figure 8 As shown, in some optional embodiments, the side of the fifth sub-section 422 facing away from the array substrate 100 includes at least one pit 423 recessed toward the array substrate 100, the orthographic projection of the at least one pit 423 on the substrate 110 is located within the orthographic projection of the at least one gap 121 on the substrate 110, and the thickness of the second sub-section 412 is greater than the thickness of the fifth sub-section 422 at the position of the at least one pit 423.

[0114] In these optional embodiments, during the laser burning process, the fifth sub-section 422 is burned to form a pit 423, the thickness of the second sub-section 412 is greater than the thickness of the fifth sub-section 422 at the position of at least one pit 423, and the morphology of the second sub-section 412 is complete and not damaged by the laser.

[0115] In some optional embodiments, at least one second electrode 500 is electrically connected to the fifth sub-portion 422 at the location of at least one recess 423 .

[0116] In these optional embodiments, the second electrode 500 is electrically connected to the fifth sub-portion 422 within the position of the pit 423, which can increase the contact area between the second electrode 500 and the fifth sub-portion 422, thereby improving the overlapping performance of the second electrode 500 and the fifth sub-portion 422 and reducing the overall power consumption of the second electrode 500 and the auxiliary electrode 420.

[0117] Optionally, the material of at least one auxiliary electrode 420 includes at least one of a transparent conductive material and a metal element material, the transparent conductive material includes at least one of indium tin oxide (ITO) and indium zinc oxide (IZO), and the metal element material includes at least one of molybdenum, copper, titanium, tungsten and silver.

[0118] In some optional embodiments, the materials of the first sub-section 411 , the third sub-section 413 , and the fourth sub-section 421 include transparent conductive materials, and the materials of the second sub-section 412 and the fifth sub-section 422 include single metal materials.

[0119] In these optional embodiments, the material of the fourth sub-section 421 includes a transparent conductive material. When laser etching is performed, the laser passes through the gap 121 and through the fourth sub-section 421 to burn the metal fifth sub-section 422, so that the material above the fifth sub-section 422 is burned to ashes, and the fifth sub-section 422 is exposed to facilitate contact with the second electrode 500.

[0120] Optionally, the material of the first sub-portion 411 , the third sub-portion 413 , and the fourth sub-portion 421 includes indium tin oxide, and the material of the second sub-portion 412 and the fifth sub-portion 422 includes silver.

[0121] Optionally, in the direction perpendicular to the array substrate 100, the thickness of the second sub-section 412 and the fifth sub-section 422 is not greater than 0.02 μm. For example, the thickness of the second sub-section 412 or the fifth sub-section 422 is 0.01 μm, 0.015 μm, 0.018 μm, and 0.02 μm, so as to avoid the problem that the thickness of the fifth sub-section 422 is too large, resulting in the laser being completely absorbed by the fifth sub-section 422. After the fifth sub-section 422 absorbs the laser, it is difficult for the side of the fifth sub-section 422 facing away from the substrate 110 to be burned, that is, the laser is blocked by the fifth sub-section 422, and it is difficult for the material above the fifth sub-section 422 to be laser ashed to expose the fifth sub-section 422.

[0122] like Figures 1 to 8As shown, in some optional embodiments, it also includes: a pixel definition layer 600, located on one side of the array substrate 100, the pixel definition layer 600 includes a plurality of pixel openings 610 and a plurality of second through holes 620, and at least one second electrode 500 is electrically connected to at least one auxiliary electrode 420 through the plurality of second through holes 620; wherein, a portion of the first electrode 410 is exposed from the corresponding pixel opening 610, and another portion is located between the pixel definition layer 600 and the array substrate 100, and a portion of at least one auxiliary electrode 420 is exposed from the plurality of second through holes 620, and another portion is located between the pixel definition layer 600 and the array substrate 100.

[0123] In these optional embodiments, the pixel opening 610 of the pixel definition layer 600 is used to set the light-emitting functional structure 300 to achieve normal light emission of the light-emitting functional structure 300. In addition, the pixel definition layer 600 defines the setting area of each light-emitting unit to reduce the cross-color defect between the light-emitting units. At least a portion of the first electrode 410 is exposed by the pixel opening 610 to serve as the light-emitting electrode of the light-emitting functional structure 300. One of the first electrode 410 and the second electrode 500 serves as the anode of the light-emitting functional structure 300, and the other serves as the cathode of the light-emitting functional structure 300. The embodiment of the present application is described by taking the first electrode 410 as the anode of the light-emitting unit and the second electrode 500 as the cathode of the light-emitting unit as an example. The side of at least one auxiliary electrode 420 facing away from the array substrate 100 is exposed by the second through hole 620 and is electrically connected to at least one second electrode 500, thereby reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, reducing the voltage drop and power consumption, and improving the problem that the second electrode 500 is easily prone to large voltage drop and power consumption due to the second electrode 500 being arranged in correspondence with the multiple light-emitting functional structures 300 arranged in the first direction X and the second electrode 500 being in a thin strip shape, thereby improving the performance of the OLED display product.

[0124] See also Figure 9 , Figure 9 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0125] like Figure 9 As shown, in some optional embodiments, the pixel definition layer 600 further includes a plurality of third through holes 630, the third through holes 630 are located on the side of the corresponding end portion 510 close to the array substrate 100, the array substrate 100 further includes a first organic insulating layer 130, the first organic insulating layer 130 is arranged close to the first electrode layer 400 and includes a plurality of fourth through holes 132, the fourth through holes 132 are arranged corresponding to the third through holes 630, and the end portion 510 is electrically connected to at least one auxiliary electrode 420 in the array substrate 100 through the corresponding third through holes 630 and the fourth through holes 132.

[0126] The third through hole 630 and the fourth through hole 132 are arranged correspondingly, which means that the third through hole 630 and the fourth through hole 132 are connected.

[0127] In these optional embodiments, the multiple ends 510 of the second electrode 500 are electrically connected to at least one auxiliary electrode 420 in the array substrate 100 through the third through hole 630 and the fourth through hole 132 , and the first power supply voltage is provided to the second electrode 500 through the at least one auxiliary electrode 420 .

[0128] In some optional embodiments, the at least one second electrode 500 includes one second electrode 500 , the second electrode 500 is located on a side of the plurality of light-emitting functional structures 300 away from the array substrate 100 , and the plurality of light-emitting functional structures 300 are an integrated structure.

[0129] In these optional embodiments, one second electrode 500 serves as an electrode of a plurality of light-emitting functional structures 300 , driving the plurality of light-emitting functional structures 300 to perform light-emitting display.

[0130] like Figures 2 to 9 As shown, in some optional embodiments, it also includes: an isolation structure 200, which is located on the side of the pixel definition layer 600 away from the array substrate 100 and encloses a plurality of isolation openings 240, and the isolation openings 240 are connected to the corresponding pixel openings 610; wherein, the same isolation opening 240 accommodates a plurality of light-emitting functional structures 300 with the same light-emitting color, and at least one second electrode 500 includes a plurality of second electrodes 500, and the second electrode 500 is located in the corresponding isolation opening 240 and is located on the side of the plurality of light-emitting functional structures 300 with the same light-emitting color away from the array substrate 100.

[0131] In these optional embodiments, when preparing the light-emitting functional structure 300 and the second electrode 500, a large gap is formed between the light-emitting functional structure 300 and the second electrode 500 at the edge of the isolation structure 200, making them difficult to connect and thus breaking. This results in multiple light-emitting functional structures 300 and multiple second electrodes 500 being located within multiple isolation openings 240. This eliminates the need for a precision mask, reduces the development and use of precision masks, and reduces manufacturing costs. The multiple light-emitting functional structures 300 located within the same isolation opening 240 emit the same color. For example, multiple red light-emitting functional structures 300 are located within the same isolation opening 240, multiple green light-emitting functional structures 300 are located within the same isolation opening 240, and multiple blue light-emitting functional structures 300 are located within the same isolation opening 240. The multiple light-emitting functional structures 300 within the same isolation opening 240 are correspondingly provided with the same second electrode 500, which drives the multiple light-emitting functional structures 300 simultaneously.

[0132] like Figure 5As shown, optionally, the display panel 10 further includes an encapsulation layer 700, which is located on a side of at least one second electrode 500 facing away from the array substrate 100 and extends from a side wall of the isolation structure 200 to a side of the isolation structure 200 facing away from the array substrate 100, thereby forming an encapsulation for the second electrode 500 and the light-emitting functional structure 300.

[0133] See also Figure 10 , Figure 10 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0134] like Figure 10 As shown, in some optional embodiments, the first organic insulating layer 130 electrically isolates the plurality of first electrodes 410 and the at least one shielding structure 120, and the orthographic projections of the plurality of first electrodes 410 on the substrate 110 are located within the orthographic projections of the at least one shielding structure 120 on the substrate 110. For example, the orthographic projections of the plurality of first electrodes 410 on the substrate 110 are located within the orthographic projections of the plurality of shielding structures 120 on the substrate 110.

[0135] In these optional embodiments, the plurality of first electrodes 410 and the first electrodes 410 and the shielding structure 120 are isolated and insulated by a first organic insulating layer 130. The orthographic projections of the plurality of first electrodes 410 on the substrate 110 are located within the orthographic projection of at least one shielding structure 120 on the substrate 110, so that the shielding structure 120 shields the first electrodes 410. The shielding structure 120 protects the area where the first electrodes 410 are located, preventing the laser from irradiating the first electrodes 410 and damaging them, and from ashing the light-emitting functional structure 300 within the pixel opening 610. The shielding structure 120 can not only protect the first electrodes 410 and the light-emitting functional structure 300, but also serve as a mask for the laser to control the laser burning area.

[0136] See also Figure 11 , Figure 11 FIG. 1 is a partial top view of a display panel in another embodiment.

[0137] like Figure 11 As shown, in some optional embodiments, at least one auxiliary electrode 420 includes a plurality of auxiliary electrodes 420 spaced apart in the second direction Y, wherein: the orthographic projection of the same auxiliary electrode 420 on the array substrate 100 passes through the orthographic projection of the plurality of isolation openings 240 on the array substrate 100, and the orthographic projections of the plurality of auxiliary electrodes 420 on the array substrate 100 pass through the orthographic projection of the same isolation opening 240 on the array substrate 100.

[0138] In these optional embodiments, the orthographic projection of the same auxiliary electrode 420 on the array substrate 100 passes through the orthographic projections of the multiple isolation openings 240 on the array substrate 100, that is, the second electrodes 500 within the multiple isolation openings 240 can overlap with the same auxiliary electrode 420, further reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, thereby reducing power consumption. The orthographic projections of the multiple auxiliary electrodes 420 on the array substrate 100 pass through the orthographic projection of the same isolation opening 240 on the array substrate 100, and multiple auxiliary electrodes are correspondingly provided within the same isolation opening 240, so that the same second electrode 500 can overlap with the multiple auxiliary electrodes 420, further reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, thereby reducing power consumption.

[0139] Optionally, the plurality of auxiliary electrodes 420 are evenly spaced apart in the second direction Y.

[0140] In some optional embodiments, the isolation structure 200 includes two first sub-sections extending along the first direction X and a plurality of second sub-sections extending along the second direction Y. The two first sub-sections and the plurality of second sub-sections enclose a plurality of isolation openings 240 .

[0141] In these optional embodiments, when preparing the light-emitting functional structure 300 and the second electrode 500, a large step is generated at the edges of the first section and the second section of the light-emitting functional structure 300 and the second electrode 500, making them difficult to connect and thus breaking, thereby forming a plurality of light-emitting functional structures 300 and a plurality of second electrodes 500 located within the plurality of isolation openings 240. This eliminates the need for a precision mask plate, reduces the development and use of a precision mask plate, and reduces preparation costs.

[0142] In some optional embodiments, the isolation structure 200 includes a first layer 210 and a second layer 220 located on a side of the first layer 210 facing away from the substrate, and the orthographic projection of the first layer 210 on the substrate is located within the orthographic projection of the second layer 220 on the substrate.

[0143] In these optional embodiments, the isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 facing away from the substrate. The first layer 210 and the second layer 220 are stacked to form the isolation structure 200. The orthographic projection of the first layer 210 arranged close to the substrate is located within the orthographic projection of the second layer 220 on the substrate. The area of the second layer 220 is larger than the area of the first layer 210. The second layer 220 covers the surface of the first layer 210 close to the second layer 220. At this time, the first layer 210 is recessed relative to the second layer 220 in a direction away from the isolation opening 240. When preparing the light-emitting layer, a large step is generated at the edge of the isolation structure 200, and the first layer 210 is concave relative to the second layer 220. The light-emitting layer is difficult to connect at the edge of the isolation structure 200, and thus breaks. The light-emitting layer breaks to form light-emitting units that are disconnected from each other, thereby reducing the crosstalk of carriers in the light-emitting layer and improving the display effect of the display panel 10. In addition, the light-emitting units can be prepared without the use of a precision mask plate, which can reduce the development and use of precision mask plates and reduce preparation costs.

[0144] Optionally, the first layer 210 includes a conductive material or an insulating material. For example, the first layer 210 includes a non-metallic conductive material or a metallic conductive material.

[0145] Optionally, the second layer 220 includes a conductive material or an insulating material.

[0146] See also Figure 12 , Figure 12 FIG. 4 is a partial cross-sectional view of a display panel in another embodiment.

[0147] like Figure 12 As shown, in some optional embodiments, the isolation structure 200 further includes a third layer 230 located on the side of the first layer 210 facing the substrate, and the orthographic projection of the first layer 210 on the substrate is located within the orthographic projection of the third layer 230 on the substrate.

[0148] Due to the etching, the waste generated by the etching is likely to enter other locations of the display panel 10, thereby causing adverse effects. After the third layer 230 is provided, the first layer 210 can be well attached to the third layer 230, and the generated etching waste falls on the third layer 230, which is easy to clean.

[0149] Optionally, the light-emitting functional structure 300 includes an electron injection layer (EIL), an electron transport layer (ETL), a light-emitting material layer, a hole injection layer (HIL) and a hole transport layer (HTL), but does not include structures such as the first electrode 410 and the second electrode 500.

[0150] The structural design in this embodiment can be applied to other display panels 10 , and the specific selection can be made based on actual conditions. This application does not impose any specific restrictions on it.

[0151] The embodiment of the second aspect of the present application further provides a display device, comprising the display panel 10 of any of the above-mentioned embodiments. Since the display device provided by the embodiment of the second aspect of the present application comprises the display panel 10 of any of the above-mentioned embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above-mentioned embodiments, which will not be further elaborated here.

[0152] 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.

[0153] See also Figures 1 to 21 , Figure 13 This is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application; Figures 14 to 21 This is a diagram of a manufacturing process of a display panel provided in an embodiment of the present application.

[0154] like Figures 1 to 21 As shown, an embodiment of the third aspect of the present application provides a method for manufacturing a display panel 10, comprising:

[0155] Step S01: providing an array substrate 100;

[0156] Step S02: forming a first electrode layer 400 including a plurality of first electrodes 410 and at least one auxiliary electrode 420 on one side of the array substrate 100 , wherein the at least one auxiliary electrode 420 extends along a first direction X;

[0157] Step S03: forming a plurality of light-emitting functional structures 300 on a side of the plurality of first electrodes 410 facing away from the array substrate 100;

[0158] Step S04: At least one second electrode 500 is formed on the side of the multiple light-emitting functional structures 300 facing away from the array substrate 100, and the at least one second electrode 500 includes a plurality of end portions 510 located in a second direction Y intersecting with the first direction X. The plurality of end portions 510 are electrically connected to at least one auxiliary electrode 420 in the array substrate 100 and are configured with a first power supply voltage. The side of the at least one auxiliary electrode 420 facing away from the array substrate 100 is connected to the at least one second electrode 500.

[0159] According to the method for manufacturing the display panel 10 according to an embodiment of the present application, an array substrate 100 is provided in step S01. A first electrode layer 400 is prepared in step S02. A light-emitting functional structure 300 is prepared in step S03. A second electrode 500 is prepared in step S04. The first electrode layer 400 includes a first electrode 410 and an auxiliary electrode 420. The first electrode 410 and the second electrode 500 are respectively located on either side of the light-emitting functional structure 300 and serve as electrodes of the light-emitting functional structure 300, driving the light-emitting functional structure 300 to emit light, thereby achieving light-emitting display of the display panel 10. The multiple ends 510 of the second electrode 500 are electrically connected to at least one auxiliary electrode 420 in the array substrate 100, thereby providing a first power supply voltage to the second electrode 500. At least one auxiliary electrode 420 is electrically connected to at least one second electrode 500 on a side facing away from the array substrate 100, thereby reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, reducing the voltage drop and power consumption, and improving the problem that the second electrode 500 is easily prone to large voltage drop and power consumption due to the second electrode 500 being arranged in a corresponding manner to the multiple light-emitting functional structures 300 arranged in the first direction X and the second electrode 500 being in a thin strip shape, thereby improving the performance of the OLED display product.

[0160] In some optional embodiments, step S01 includes:

[0161] providing a substrate 110;

[0162] At least one shielding structure 120 is formed on one side of the substrate 110 , and the at least one shielding structure 120 encloses at least one gap 121 ;

[0163] Step S02 includes:

[0164] A first electrode layer 400 including a plurality of first electrodes 410 and at least one auxiliary electrode 420 is formed on a side of the at least one shielding structure 120 facing away from the substrate 110, and an orthographic projection of the at least one gap 121 on the substrate 110 is located within an orthographic projection of the at least one auxiliary electrode 420 on the substrate 110;

[0165] Step S03 includes:

[0166] forming a pixel definition material layer on a side of the first electrode layer 400 facing away from the array substrate 100;

[0167] A plurality of pixel openings 610 and a plurality of second through holes 620 are formed on the pixel definition material layer to obtain a pixel definition layer 600 , wherein the pixel openings 610 expose the corresponding first electrodes 410 , and the plurality of second through holes 620 expose at least one auxiliary electrode 420 ;

[0168] forming a light-emitting functional material layer in the plurality of pixel openings 610 , in the plurality of second through holes 620 , and on a side of the pixel definition layer 600 facing away from the substrate 110 ;

[0169] On a side of the substrate 110 facing away from the at least one shielding structure 120, laser irradiation is performed on at least one gap 121 to remove the light-emitting functional material layer located in the plurality of second through holes 620 by ashing, thereby obtaining a plurality of light-emitting functional structures 300 located on a side of the plurality of first electrodes 410 facing away from the array substrate 100.

[0170] Step S04 includes:

[0171] At least one second electrode 500 is formed in the multiple light-emitting functional structures 300 and the multiple second through holes 620, so that the at least one second electrode 500 is electrically connected to the side of the at least one auxiliary electrode 420 facing away from the array substrate 100, wherein the at least one second electrode 500 includes a plurality of end portions 510 located in a second direction Y intersecting with the first direction X, and the plurality of end portions 510 are electrically connected to the at least one auxiliary electrode 420 in the array substrate 100 and are configured with a first power supply voltage.

[0172] In these optional embodiments, the orthographic projections of the plurality of gaps 121 formed by the shielding structure 120 on the substrate 110 are set within the orthographic projections of the auxiliary electrode 420 on the substrate 110. When laser etching is performed, the shielding structure 120 can shield the laser and serve as a mask for laser etching. The laser burns the position of the auxiliary electrode 420 through the gaps 121 formed by the shielding structure 120, thereby etching the pixel defining layer on the upper portion of the auxiliary electrode 420 to form a second through hole 620, and removing the light-emitting functional material layer located in the second through hole 620 by ashing, and the auxiliary electrode 420 is exposed through the second through hole 620. When preparing the second electrode 500, the second electrode 500 can be in contact and electrically connected to the auxiliary electrode 420 through the second through hole 620, thereby improving the overlap performance of the second electrode 500 and the auxiliary electrode 420, reducing the overall resistance of the second electrode 500 and the auxiliary electrode 420, and reducing voltage drop and power consumption.

[0173] Optionally, the laser beam may include at least one of a point spot and a linear spot. When the laser beam is a point spot, the laser burn area can be narrowed, achieving precise burn-ashing of the area where the auxiliary electrode 420 is located. When the laser beam is a linear spot, a shielding structure 120 is required to shield the first electrode 410 to prevent damage to the first electrode 410.

[0174] Optionally, the laser is at least one of an infrared laser, a far-infrared laser, and a near-infrared laser, and the wavelength range of the laser is not less than 750 nm and not more than 1000 μm. For example, the wavelength range of the near-infrared laser is not less than 750 nm and not more than 3 μm, and the wavelength range of the far-infrared laser is not less than 25 μm and not more than 1000 μm.

[0175] Optionally, the laser uses an infrared laser with a wavelength of 780 nm.

[0176] While the embodiments described above are not exhaustive, they do not limit the invention to the specific embodiments described. Clearly, numerous modifications and variations are possible based on the above description. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: The display panel includes: an array substrate; a first electrode layer, located on one side of the array substrate, comprising a plurality of first electrodes and at least one auxiliary electrode, wherein the at least one auxiliary electrode extends along a first direction; a plurality of light-emitting functional structures, each of the light-emitting functional structures being located on a side of the corresponding first electrode facing away from the array substrate; at least one second electrode, located on a side of the plurality of light-emitting functional structures away from the array substrate, and including a plurality of end portions located in a second direction intersecting with the first direction; The multiple ends are electrically connected to the at least one auxiliary electrode in the array substrate and are configured with a first power supply voltage, and the side of the at least one auxiliary electrode facing away from the array substrate is connected to the at least one second electrode.

2. The display panel according to claim 1, wherein: The array substrate includes: substrate; at least one shielding structure corresponding to the at least one auxiliary electrode, the at least one shielding structure being located between the substrate and the first electrode layer and enclosing at least one gap; wherein the orthographic projection of the at least one gap on the substrate is located within the orthographic projection of the at least one auxiliary electrode on the substrate; Preferably, the at least one auxiliary electrode includes a plurality of auxiliary electrodes, the plurality of auxiliary electrodes are arranged along the second direction, the at least one shielding structure includes a plurality of shielding structures corresponding to the plurality of auxiliary electrodes, and the shielding structure is provided between the substrate and the corresponding auxiliary electrodes; Preferably, the at least one gap includes a plurality of gaps, and two adjacent shielding structures enclose one gap corresponding to one auxiliary electrode; Preferably, the at least one gap includes a plurality of gaps, one blocking structure encloses a plurality of the gaps corresponding to one auxiliary electrode, and an orthographic projection of the gap on the substrate is located within an orthographic projection of the at least one second electrode on the substrate; Preferably, the edge of the orthographic projection of the auxiliary electrode on the substrate is located within the orthographic projection of the corresponding shielding structure on the substrate; Preferably, the width of the gap in the second direction is not greater than 3 μm and not less than 1 μm; Preferably, in a direction perpendicular to the array substrate, the thickness of the shielding structure is not greater than 0.1 μm; Preferably, the material of the shielding structure includes a light-shielding material; Preferably, the material of the shielding structure includes a metal material, and the metal material includes at least one of molybdenum, copper, titanium, tungsten and a metal alloy; Preferably, the array substrate further comprises a first organic insulating layer, which is disposed between the at least one blocking structure and the first electrode layer and comprises a plurality of first through holes, and the at least one blocking structure and the at least one auxiliary electrode are electrically connected via the plurality of first through holes; Preferably, the plurality of end portions and the at least one shielding structure are electrically connected in the array substrate.

3. The display panel according to claim 2, wherein: The first electrode includes a first sub-portion, a second sub-portion, and a third sub-portion sequentially stacked in a direction away from the array substrate; The at least one auxiliary electrode includes a fourth sub-portion and a fifth sub-portion sequentially stacked in a direction away from the array substrate; Wherein, the first sub-section and the fourth sub-section are provided in the same layer and the same material, and the second sub-section and the fifth sub-section are provided in the same layer and the same material; Preferably, in a direction perpendicular to the array substrate, the thickness of the second sub-portion is greater than the thickness of the fifth sub-portion; Preferably, the side of the fifth sub-section facing away from the array substrate includes at least one recessed pit recessed toward the array substrate, the orthographic projection of the at least one recess on the substrate is located within the orthographic projection of the at least one gap on the substrate, and the thickness of the second sub-section is greater than the thickness of the fifth sub-section at the location of the at least one recess. Preferably, the at least one second electrode is electrically connected to the fifth sub-section at the at least one pit position; Preferably, the material of the at least one auxiliary electrode includes at least one of a transparent conductive material and a metal element material, the transparent conductive material includes at least one of indium tin oxide and indium zinc oxide, and the metal element material includes at least one of molybdenum, copper, titanium, tungsten and silver; Preferably, the materials of the first sub-section, the third sub-section and the fourth sub-section include the transparent conductive material, and the materials of the second sub-section and the fifth sub-section include the metal element material; Preferably, the materials of the first sub-section, the third sub-section and the fourth sub-section include indium tin oxide, and the materials of the second sub-section and the fifth sub-section include silver; Preferably, in a direction perpendicular to the array substrate, the thickness of the second sub-portion and the fifth sub-portion is not greater than 0.02 μm.

4. The display panel according to claim 1, wherein: Also includes: a pixel definition layer located on one side of the array substrate, the pixel definition layer comprising a plurality of pixel openings and a plurality of second through holes, the at least one second electrode being electrically connected to the at least one auxiliary electrode through the plurality of second through holes; Part of the first electrode is exposed from the corresponding pixel opening, and another part is located between the pixel definition layer and the array substrate; part of the at least one auxiliary electrode is exposed from the plurality of second through holes, and another part is located between the pixel definition layer and the array substrate; Preferably, the pixel definition layer further includes a plurality of third through holes, the third through holes being located on a side of the corresponding end portion close to the array substrate, the array substrate further includes a first organic insulating layer, the first organic insulating layer being disposed close to the first electrode layer and including a plurality of fourth through holes, the fourth through holes being disposed corresponding to the third through holes, and the end portion being electrically connected to the at least one auxiliary electrode in the array substrate through the corresponding third through holes and the fourth through holes; Preferably, the at least one second electrode includes one second electrode, the second electrode is located on a side of the multiple light-emitting functional structures away from the array substrate, and the multiple light-emitting functional structures are an integrated structure.

5. The display panel according to claim 4, wherein: Also includes: an isolation structure, located on a side of the pixel definition layer facing away from the array substrate and enclosing a plurality of isolation openings, wherein the isolation openings are connected to the corresponding pixel openings; wherein a plurality of light-emitting functional structures emitting light of the same color are accommodated in the same isolation opening, the at least one second electrode comprises a plurality of second electrodes, and the second electrodes are located in the corresponding isolation opening and on a side of the plurality of light-emitting functional structures emitting light of the same color facing away from the array substrate; Preferably, the display panel further comprises an encapsulation layer, which is located on a side of the at least one second electrode away from the array substrate and extends from a sidewall of the isolation structure to a side of the isolation structure away from the array substrate.

6. The display panel according to claim 2, wherein: The first organic insulating layer electrically isolates the plurality of first electrodes from the at least one blocking structure, and orthographic projections of the plurality of first electrodes on the substrate are located within an orthographic projection of the at least one blocking structure on the substrate.

7. The display panel according to claim 5, wherein: The at least one auxiliary electrode includes a plurality of auxiliary electrodes spaced apart in the second direction, wherein: The orthographic projection of the same auxiliary electrode on the array substrate passes through the orthographic projections of multiple isolation openings on the array substrate, and the orthographic projections of multiple auxiliary electrodes on the array substrate pass through the orthographic projection of the same isolation opening on the array substrate; Preferably, the isolation structure includes two first sub-sections extending along the first direction and a plurality of second sub-sections extending along the second direction, and the two first sub-sections and the plurality of second sub-sections enclose and form the plurality of isolation openings.

8. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 7.

9. A method for preparing a display panel, characterized in that: include: providing an array substrate; forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on one side of the array substrate, wherein the at least one auxiliary electrode extends along a first direction; forming a plurality of light-emitting functional structures on a side of the plurality of first electrodes away from the array substrate; At least one second electrode is formed on a side of the multiple light-emitting functional structures facing away from the array substrate, the at least one second electrode includes a plurality of ends located in a second direction intersecting with the first direction, the plurality of ends are electrically connected to the at least one auxiliary electrode in the array substrate and are configured with a first power supply voltage, and the at least one auxiliary electrode is connected to the at least one second electrode on a side facing away from the array substrate.

10. The preparation method according to claim 9, characterized in that The step of providing an array substrate includes: providing a substrate; forming at least one shielding structure on one side of the substrate, wherein the at least one shielding structure encloses at least one gap; The step of forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on one side of the array substrate comprises: forming a first electrode layer including a plurality of first electrodes and at least one auxiliary electrode on a side of the at least one shielding structure facing away from the substrate, and ensuring that an orthographic projection of the at least one gap on the substrate is located within an orthographic projection of the at least one auxiliary electrode on the substrate; The step of forming a plurality of light-emitting functional structures on a side of the plurality of first electrodes away from the array substrate comprises: forming a pixel definition material layer on a side of the first electrode layer facing away from the array substrate; forming a plurality of pixel openings and a plurality of second through holes on the pixel definition material layer to obtain a pixel definition layer, wherein the pixel openings expose the corresponding first electrodes, and the plurality of second through holes expose the at least one auxiliary electrode; forming a light-emitting functional material layer in the plurality of pixel openings, in the plurality of second through holes, and on a side of the pixel definition layer facing away from the substrate; On a side of the substrate facing away from the at least one shielding structure, irradiating the at least one gap with a laser to remove the light-emitting functional material layer located in the plurality of second through holes by ashing, thereby obtaining a plurality of light-emitting functional structures located on a side of the plurality of first electrodes facing away from the array substrate; The step of forming at least one second electrode on a side of the plurality of light-emitting functional structures away from the array substrate comprises: forming at least one second electrode in the plurality of light-emitting functional structures and the plurality of second through holes, so that the at least one second electrode is electrically connected to a side of the at least one auxiliary electrode facing away from the array substrate, wherein the at least one second electrode includes a plurality of end portions located in a second direction intersecting with the first direction, the plurality of end portions being electrically connected to the at least one auxiliary electrode in the array substrate and being configured with a first power supply voltage; Preferably, the laser includes at least one of a point spot and a linear spot; Preferably, the laser is at least one of an infrared laser, a far-infrared laser and a near-infrared laser, and the wavelength range of the laser is not less than 750 nm and not more than 1000 μm.

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