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 a substrate, an auxiliary electrode, a light-emitting layer and a first electrode layer. The auxiliary electrode is arranged on the substrate, the light-emitting layer comprises light-emitting units which are arranged at intervals, and each light-emitting unit is divided into a plurality of light-emitting sub-units which are arranged adjacently by the auxiliary electrode. The first electrode layer comprises a plurality of spaced first electrodes, and the first electrodes are located on the sides, away from the substrate, of the sub-light-emitting units. Since the light-emitting unit is divided into the plurality of sub light-emitting units, when a dark spot appears in the light-emitting unit, the dark spot is located at the position of a certain sub light-emitting unit in the light-emitting unit, and the auxiliary electrode is partially cut at the connection position of the first electrode and the auxiliary electrode corresponding to the sub light-emitting unit; therefore, the brightness of other sub-light-emitting units in the light-emitting unit is increased, and the bad problems of dark spots and the like of the display panel are solved.

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] With the rapid development of electronic devices, users have higher and higher requirements for display effects, making the screen display of electronic devices receive more and more attention in the industry.

[0003] In the related art, during the preparation process of an organic light emitting diode (OLED) display panel, due to improper operation and other reasons, the display panel is prone to defects such as dark spots, resulting in poor display effects. Summary of the invention

[0004] 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 problem that the display panel is prone to dark spots and other defects, resulting in poor display effects.

[0005] A first aspect of the present application provides a display panel, comprising: a substrate; an auxiliary electrode located on the substrate; a light-emitting layer located on the substrate, the light-emitting layer comprising light-emitting units spaced apart from each other, the light-emitting unit comprising a plurality of adjacently arranged sub-light-emitting units with the same color; a first electrode layer located on a side of the light-emitting layer away from the substrate, the first electrode layer comprising a first electrode located on a side of each sub-light-emitting unit away from the substrate, two first electrodes corresponding to any two sub-light-emitting units being spaced apart from each other, and the first electrode and the auxiliary electrode being electrically connected.

[0006] According to an implementation of the first aspect of the present application, the display panel also includes: a second electrode layer, located on the substrate, the second electrode layer includes second electrodes that are spaced apart from each other and located on the side of the light-emitting unit facing the substrate; within the same light-emitting unit, the orthographic projection of each sub-light-emitting unit on the substrate at least partially overlaps with the orthographic projection of the same second electrode on the substrate.

[0007] In some optional embodiments, the second electrode includes spaced sub-second electrodes and connecting segments connecting adjacent sub-second electrodes, and an orthographic projection of the sub-light emitting unit on the substrate at least partially overlaps with an orthographic projection of the sub-second electrode on the substrate.

[0008] In some optional embodiments, in the sub-light emitting unit and the sub-second electrode that are stacked on each other, the orthographic projection of the sub-light emitting unit on the substrate is located within the orthographic projection of the sub-second electrode on the substrate.

[0009] In some optional embodiments, the size of the connecting segment is smaller than the size of the sub-second electrode.

[0010] In some optional embodiments, within the same light-emitting unit, multiple sub-light-emitting units have the same color.

[0011] In some optional embodiments, the auxiliary electrode includes a plurality of first wirings arranged side by side along a first direction, the first wirings are staggered with the first electrodes in the first direction, and at least some of the first electrodes are electrically connected to at least one first wiring.

[0012] In some optional embodiments, the auxiliary electrode includes a first conductive layer and a second layer located on the side of the first conductive layer facing away from the substrate, and the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second layer on the substrate; at least part of the first conductive layer and at least part of the second layer constitute a first trace.

[0013] In some optional embodiments, the display panel includes a pixel definition layer, the pixel definition layer is located on the substrate, the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion, each of the sub-light-emitting units is located at each of the pixel openings, the first electrode is arranged to cover the pixel opening, and the first wiring is arranged on a side of the pixel definition portion away from the substrate;

[0014] In some optional embodiments, the auxiliary electrode further includes a second wiring arranged side by side along a second direction, the first direction and the second direction intersect, the second wiring is insulated from the first electrode, and the second wiring is electrically connected to the first wiring;

[0015] In some optional embodiments, in the second direction, the pixel defining portions on both sides of the first electrode are provided with clearance openings, and the second wiring located on at least one side of the first electrode is arranged in the clearance openings;

[0016] In some optional embodiments, the second routing line disposed in the making way opening is spaced apart from a side wall of the making way opening.

[0017] In some optional embodiments, two sides of the first electrode in the first direction are electrically connected to the two first traces; or, the first electrodes are electrically connected to the first traces on the same side in the first direction.

[0018] In some optional embodiments, a plurality of first electrodes distributed along the second direction are electrically connected to the same first wiring, and the first direction and the second direction intersect.

[0019] In some optional embodiments, the auxiliary electrode includes a lap portion extending from the first wiring toward the sub-light-emitting unit, and the first electrode and the lap portion are electrically connected.

[0020] In some optional embodiments, overlapping portions are provided on both sides of the first wiring in the first direction, and each overlapping portion is electrically connected to each first electrode.

[0021] In some optional embodiments, part of the first conductive layer and part of the second layer constitute a overlapping portion.

[0022] In some optional embodiments, the auxiliary electrode further includes a second routing line arranged side by side along the second direction, part of the first electrode is electrically connected to the first routing line, another part of the first electrode is electrically connected to the second routing line, and the first direction and the second direction intersect.

[0023] In some optional embodiments, in the same light-emitting unit, one of the two first electrodes corresponding to two adjacent sub-light-emitting units is electrically connected to the first wiring, and the other is electrically connected to the second wiring.

[0024] In some optional embodiments, of the first electrodes corresponding to two adjacent light-emitting units in the first direction, one is electrically connected to the first wiring, and the other is electrically connected to the second wiring.

[0025] In some optional embodiments, part of the first conductive layer and part of the second layer constitute the second trace.

[0026] In some optional embodiments, the second wiring extends toward the overlapping portion of the light-emitting unit, and the second wiring and the first electrode are electrically connected through the overlapping portion.

[0027] In some optional embodiments, the display panel includes a pixel definition layer, which is located on the substrate, and the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, each of the sub-light-emitting units is located at each of the pixel openings, and the first electrode is arranged to cover the pixel openings; in a first direction, a clearance opening is opened on the pixel defining portions on both sides of the first electrode, and the first wiring located on at least one side of the first electrode is arranged in the clearance opening; the overlapping portion is arranged on a side of the pixel defining portion away from the substrate, and is electrically connected to the first wiring in the clearance opening.

[0028] In some optional embodiments, the first routing line and the second routing line are insulated from each other.

[0029] In some optional embodiments, at least two second wirings are arranged between two adjacent first electrodes in the second direction.

[0030] In some optional embodiments, the display panel includes:

[0031] The pixel definition layer is located on the substrate. The pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion. Each sub-light emitting unit is located at each pixel opening. The first electrode covers the pixel opening.

[0032] In some optional embodiments, in the first direction, at least a portion of the auxiliary electrodes located on at least one side of the first electrode is arranged on the side of the pixel defining portion facing away from the substrate; in the second direction, a clearance opening is opened on the pixel defining portions on both sides of the first electrode; in the second direction, at least a portion of the auxiliary electrodes on both sides of the first electrode are arranged in the clearance opening.

[0033] In some optional embodiments, in the second direction, the auxiliary electrodes on both sides of the first electrode are arranged in the make way opening; in the second direction, the cross-section of the pixel defining portion on both sides of the first electrode has a side facing the auxiliary electrode, and the side and the surface of the substrate close to the pixel defining layer form a preset angle, and the preset angle is 50° to 90°.

[0034] In some optional embodiments, the distance between the surface of the pixel defining portion away from the substrate and the substrate is a first distance, the distance between the surface of the auxiliary electrode located at the clearance opening away from the substrate and the substrate is a second distance, and the first distance is greater than the second distance.

[0035] An embodiment of a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0036] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0037] preparing an auxiliary electrode on the substrate;

[0038] A light-emitting layer is prepared on a side of the auxiliary electrode away from the substrate, wherein the light-emitting layer comprises light-emitting units arranged at intervals from each other, and the light-emitting unit comprises a plurality of sub-light-emitting units;

[0039] A first electrode layer is prepared on the side of the light-emitting layer away from the substrate. The first electrode layer includes first electrodes that are spaced apart from each other and located on the side of each sub-light-emitting unit away from the substrate. Two first electrodes corresponding to any two sub-light-emitting units are spaced apart from each other, and the first electrode and the auxiliary electrode are electrically connected.

[0040] According to the display panel of the embodiment of the present application, the display panel includes a substrate, an auxiliary electrode, a light-emitting layer and a first electrode layer. The auxiliary electrode is arranged on the substrate. When preparing the light-emitting layer, the light-emitting layer is disconnected at the position of the auxiliary electrode to form light-emitting units arranged at intervals from each other. Each light-emitting unit is divided into a plurality of adjacently arranged sub-light-emitting units of the same color by the auxiliary electrode. The first electrode layer is arranged on the side of the light-emitting layer away from the substrate, and is disconnected by the auxiliary electrode to form a plurality of spaced first electrodes. The first electrode is located on the side of the sub-light-emitting unit away from the substrate, and serves as the electrode of the sub-light-emitting unit. Since the light-emitting unit is divided into a plurality of sub-light-emitting units, when a dark spot appears in the light-emitting unit, the dark spot is located at a certain sub-light-emitting unit in the light-emitting unit, and the auxiliary electrode is partially cut at the connection position between the first electrode corresponding to the sub-light-emitting unit and the auxiliary electrode, so that the first electrode and the auxiliary electrode are insulated. Since the first electrodes corresponding to the sub-light-emitting units in the same light-emitting unit are connected in parallel, when the first electrode is disconnected from the other first electrodes, the current flowing into the first electrodes corresponding to other sub-light-emitting units in the light-emitting unit increases, thereby increasing the brightness of the corresponding sub-light-emitting unit to compensate for the missing brightness of the sub-light-emitting unit where the dark spot appears, improving the problem that the display panel is prone to dark spots and the like, and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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.

[0042] Figure 1 is a partial top view of a display panel provided in an embodiment of the present application;

[0043] Figure 2 yes Figure 1 Partial cross-sectional view at AA in the middle;

[0044] Figure 3 is a partial cross-sectional view of a display panel in another embodiment;

[0045] Figure 4 is a partial top view of a display panel in another embodiment;

[0046] Figure 5 is a partial top view of a display panel in yet another embodiment;

[0047] Figure 6 is a partial top view of a display panel in yet another embodiment;

[0048] Figure 7 is a partial top view of a display panel in yet another embodiment;

[0049] Figure 8 is a partial top view of a display panel in yet another embodiment;

[0050] Fig. 9 is a partial top view of a display panel in yet another embodiment;

[0051] Fig.10 is a partial top view of a display panel in yet another embodiment;

[0052] Fig.11 is a partial top view of a display panel in yet another embodiment;

[0053] Fig.12 is a partial top view of a display panel in yet another embodiment;

[0054] Fig.13 is a partial top view of a display panel in yet another embodiment;

[0055] Fig.14 yes Fig.10 Partial cross-sectional view at the middle BB;

[0056] Fig.15 yes Fig.10 Partial cross-sectional view at CC;

[0057] Fig.16 yes Fig.10 Partial cross-sectional view at DD in the middle;

[0058] Fig.17 is a partial top view of a display panel in yet another embodiment;

[0059] Fig.18 is a partial top view of a display panel in yet another embodiment;

[0060] Fig.19 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0061] Description of reference numerals:

[0062] 10. Display panel;

[0063] 100. Substrate;

[0064] 200, auxiliary electrode; 201, first wiring; 202, second wiring; 203, overlapping portion; 210, first conductive layer; 220, second layer;

[0065] 300, light-emitting layer; 310, light-emitting unit; 301, sub-light-emitting unit; 311, first light-emitting unit; 312, second light-emitting unit; 313, third light-emitting unit;

[0066] 400, first electrode layer; 410, first electrode;

[0067] 500, second electrode layer; 510, second electrode; 511, sub-second electrode; 512, connecting segment;

[0068] 600, pixel definition layer; 610, pixel definition portion; 620, pixel opening; 630, clearance opening;

[0069] α, preset angle;

[0070] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0071] 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 only to provide a better understanding of the present application by illustrating the examples of the present application.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0073] 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 another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0074] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. Embodiments of the display panel, the display device, and the method for manufacturing a display panel are described below in conjunction with the accompanying drawings.

[0075] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0076] Please also read Figure 1 and Figure 2 , Figure 1 is a partial top view of a display panel provided in an embodiment of the present application; Figure 2 yes Figure 1 Partial cross-sectional view at AA in the middle.

[0077] like Figure 1 and Figure 2 As shown, the first embodiment of the present application provides a display panel 10, which includes a substrate 100, an auxiliary electrode 200, a light-emitting layer 300 and a first electrode layer 400; the auxiliary electrode 200 is located on the substrate 100; the light-emitting layer 300 is located on the substrate 100, and the light-emitting layer 300 includes light-emitting units 310 arranged at intervals from each other, and the light-emitting unit 310 includes a plurality of adjacently arranged sub-light-emitting units 301, and the light-emitting colors of the plurality of sub-light-emitting units 301 may be the same; the first electrode layer 400 is located on the side of the light-emitting layer 300 away from the substrate 100, and the first electrode layer 400 includes a first electrode 410 located on the side of each sub-light-emitting unit 301 away from the substrate 100, and the two first electrodes 410 corresponding to any two sub-light-emitting units 301 are arranged at intervals, and the first electrode 410 and the auxiliary electrode 200 are electrically connected.

[0078] According to the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, an auxiliary electrode 200, a light-emitting layer 300 and a first electrode layer 400. The auxiliary electrode 200 is disposed on the substrate 100. When the light-emitting layer 300 is prepared, the light-emitting layer 300 is disconnected at the position of the auxiliary electrode 200 to form light-emitting units 310 that are spaced apart from each other. Each light-emitting unit 310 is divided into a plurality of adjacent sub-light-emitting units 301 by the auxiliary electrode 200. The first electrode layer 400 is disposed on the side of the light-emitting layer 300 that is away from the substrate 100, and is disconnected by the auxiliary electrode 200 to form a plurality of spaced first electrodes 410. The first electrode 410 is located on the side of the sub-light-emitting unit 301 that is away from the substrate 100, and serves as an electrode of the sub-light-emitting unit 301. Since the light-emitting unit 310 is divided into a plurality of sub-light-emitting units 301, when a dark spot appears in the light-emitting unit 310, the dark spot is located at a certain sub-light-emitting unit 301 in the light-emitting unit 310, and the auxiliary electrode 200 is partially cut at the connection position between the first electrode 410 corresponding to the sub-light-emitting unit 301 and the auxiliary electrode 200, so that the first electrode 410 and the auxiliary electrode 200 are insulated, and when the first electrode 410 is disconnected from other first electrodes 410, the current flowing into the first electrodes 410 corresponding to other sub-light-emitting units 301 in the light-emitting unit 310 increases, thereby increasing the brightness of the corresponding sub-light-emitting unit 301 to compensate for the missing brightness of the sub-light-emitting unit 301 where the dark spot appears, thereby improving the problem that the display panel 10 is prone to dark spots and the like, and improving the display effect of the display panel 10.

[0079] Optionally, the light emitting unit 310 includes two or more sub-light emitting units 301, and the sub-light emitting units 301 in the same light emitting unit 310 have the same color. The present application takes the light emitting unit 310 including two sub-light emitting units 301 as an example for description.

[0080] There are many ways to set the substrate 100. For example, the substrate 100 may include a substrate and an array substrate arranged on the substrate. Alternatively, the substrate 100 is the substrate. Alternatively, the substrate 100 includes a buffer layer and a support plate on a side away from the substrate.

[0081] Optionally, the auxiliary electrode 200 includes a first conductive layer 210 , and at least a portion of the first electrode 410 is electrically connected to the first conductive layer 210 .

[0082] Please also read Figure 3 and Figure 4 , Figure 3 is a partial cross-sectional view of a display panel in another embodiment; Figure 4 FIG. 4 is a partial top view of a display panel in another embodiment.

[0083] like Figure 3 and Figure 4As shown, in some optional embodiments, the display panel 10 also includes a second electrode layer 500, the second electrode layer 500 is located on the substrate 100, and the second electrode layer 500 includes second electrodes 510 that are spaced apart from each other and located on the side of the light-emitting unit 310 facing the substrate 100; within the same light-emitting unit 310, the orthographic projection of each sub-light-emitting unit 301 on the substrate 100 at least partially overlaps with the orthographic projection of the same second electrode 510 on the substrate 100.

[0084] In these optional embodiments, one of the first electrode 410 and the second electrode 510 serves as the anode of the light-emitting unit 310, and the other serves as the cathode of the light-emitting unit 310. The present application takes the first electrode 410 as the cathode and the second electrode 510 as the anode as an example for explanation. The second electrode 510 serves as the anode of the light-emitting electrode. In the same light-emitting unit 310, the positive projection of each sub-light-emitting unit 301 on the substrate 100 overlaps with the positive projection of the same second electrode 510 on the substrate 100 at least partially, that is, each sub-light-emitting unit 301 shares the same second electrode 510. When a dark spot appears in the light-emitting unit 310, the part of the auxiliary electrode 200 connected to the first electrode 410 at the corresponding position can be isolated from the other part of the auxiliary electrode 200, so as to improve the dark spot problem, or the part of the second electrode 510 at the corresponding position can be isolated from the other part of the second electrode 510, and both isolation methods can increase the current flowing into the first electrode 410 corresponding to the other sub-light-emitting units 301, thereby improving the brightness of the other sub-light-emitting units 301 to compensate for the brightness missing at the dark spot position.

[0085] See also Figure 5 and Figure 6 , Figure 5 is a partial top view of a display panel in yet another embodiment; Figure 6 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0086] like Figure 5 and Figure 6 As shown, in some optional embodiments, the second electrode 510 includes spaced-apart sub-second electrodes 511 and connecting segments 512 connecting adjacent sub-second electrodes 511 , and the orthographic projection of the sub-light-emitting unit 301 on the substrate 100 at least partially overlaps with the orthographic projection of the sub-second electrode 511 on the substrate 100 .

[0087] In these optional embodiments, the orthographic projection of the sub-light emitting unit 301 on the substrate 100 overlaps at least partially with the orthographic projection of the sub-second electrode 511 on the substrate 100, each sub-second electrode 511 serves as the anode of each sub-light emitting unit 301, and the first electrode 410 and the sub-second electrode 511 ensure the normal light emission of the sub-light emitting unit 301. Adjacent sub-second electrodes 511 are connected through the connecting segment 512. When a dark spot appears in a sub-light emitting unit 301, the connecting segment 512 connected to the corresponding sub-second electrode 511 is cut off, the sub-second electrode 511 is disconnected from other sub-second electrodes 511, and the current flowing into the sub-second electrodes 511 corresponding to other sub-light emitting units 301 in the light emitting unit 310 increases, thereby improving the brightness of other sub-light emitting units 301.

[0088] For example, when the light-emitting unit 310 includes two sub-light-emitting units 301, the second electrode 510 includes two sub-second electrodes 511, and the two sub-second electrodes 511 are connected by a connecting segment 512, one of the sub-second electrodes 511 is connected to the anode signal supply terminal. When a dark spot appears in the sub-light-emitting unit 301 corresponding to the other sub-second electrode 511, the connecting segment 512 is cut off to break the circuit between the two sub-second electrodes 511, and the current flowing into one of the sub-second electrodes 511 increases, thereby improving the brightness of the sub-light-emitting unit 301 corresponding to the sub-second electrode 511. After the brightness of the sub-light-emitting unit 301 is improved, the actual brightness of the sub-light-emitting unit 301 at the dark spot position can be compensated, thereby improving the dark spot problem.

[0089] In some optional embodiments, in the stacked sub-light emitting unit 301 and the sub-second electrode 511 , the orthographic projection of the sub-light emitting unit 301 on the substrate 100 is located within the orthographic projection of the sub-second electrode 511 on the substrate 100 .

[0090] In these optional embodiments, the orthographic projection of the sub-light-emitting unit 301 on the substrate 100 is located within the orthographic projection of the sub-second electrode 511 on the substrate 100 to increase the contact area between the sub-light-emitting unit 301 and the second electrode 510, thereby increasing the effective light-emitting area of ​​the sub-light-emitting unit 301.

[0091] Optionally, the size of the connecting segment 512 is smaller than that of the sub-second electrode 511. When the connecting segment 512 needs to be cut to improve the dark spot problem, the connecting segment 512 is smaller in size and easier to cut.

[0092] See also Figure 7 , Figure 7 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0093] like Figure 7As shown, in some optional embodiments, the auxiliary electrode 200 includes a plurality of first wirings 201 arranged side by side along a first direction X. In the first direction X, the first wirings 201 are staggered with the first electrodes 410 , and at least part of the first electrodes 410 is electrically connected to at least one first wiring 201 .

[0094] In these optional embodiments, after each first electrode 410 is connected to at least one first wiring 201, the first electrode 410 is connected to the cathode signal supply terminal through the first wiring 201 to provide an electrical signal to the first electrode 410 through the first wiring 201. When a dark spot appears in the sub-light-emitting unit 301 corresponding to the first electrode 410, the first wiring 201 connected to the first electrode 410 is cut off to isolate the first electrode 410, thereby increasing the inflow current of the first electrode 410 corresponding to other sub-light-emitting units 301 in the light-emitting unit 310, improving the brightness of other sub-light-emitting units 301, and compensating for the brightness missing at the dark spot position. In some optional embodiments, the first electrode 410 is electrically connected to two first wirings 201 on both sides in the first direction X.

[0095] Optional, see Figure 8 , Figure 8 FIG. 1 is a partial top view of a display panel in another embodiment. Figure 8 As shown, each first electrode 410 is electrically connected to each first wiring 201 on the same side in the first direction X.

[0096] In these optional embodiments, the first electrode 410 is connected to the first wirings 201 on both sides, and the first wirings 201 on both sides can provide electrical signals to the first electrode 410 to ensure the signal supply of the first electrode 410. When the first electrode 410 needs to be isolated, the connection parts of the first wirings 201 on both sides of the first electrode 410 are cut to insulate the first electrode 410 from the first wirings 201. When the first electrode 410 is connected to the first wirings 201 on one side, each first electrode 410 needs to be connected to the first wirings 201 on the same side in the first direction X. When one or more of the first electrodes 410 need to be isolated, the first wirings 201 corresponding to the first electrodes 410 are cut. Since the first wirings 201 are only connected to the first electrodes 410 on one side, the problem that the connection between the first electrodes 410 on both sides and the first wirings 201 may be cut at the same time when the first wirings 201 are connected to the first electrodes 410 on both sides in the first direction X can be improved. Therefore, when the first electrodes 410 are all disposed on the same side of the first wiring 201 , the mutual influence between the first electrodes 410 can be reduced.

[0097] Optionally, a plurality of first electrodes 410 distributed along the second direction Y are electrically connected to the same first wiring 201 , and the first direction X and the second direction Y intersect.

[0098] See also Fig. 9 , Fig. 9 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0099] like Fig. 9 As shown, in some optional embodiments, the auxiliary electrode 200 includes a lap portion 203 extending from the first wiring 201 toward the sub-light-emitting unit 301 , and the first electrode 410 is electrically connected to the lap portion 203 .

[0100] In these optional embodiments, the first wiring 201 extends toward the sub-light-emitting unit 301 to form a lap portion 203, and the first electrode 410 is electrically connected to the first wiring 201 through the lap portion 203. When the first electrode 410 needs to be insulated and isolated, the corresponding lap portion 203 can be directly cut to achieve insulation between the first electrode 410 and the first wiring 201. And by cutting the lap portion 203, the connection between the first wiring 201 and other first electrodes 410 will not be affected.

[0101] The first wiring 201 and the first electrode 410 may be connected in various ways. For example, the first wiring 201 may be connected to the first electrode 410 on only one side in the first direction X.

[0102] Or, if Fig. 9 As shown, in some optional embodiments, the first wiring 201 is provided with overlapping portions 203 on both sides of the first direction X, and each overlapping portion 203 is electrically connected to each first electrode 410 .

[0103] In these optional embodiments, both sides of the first wiring 201 in the first direction X are electrically connected to the first electrode 410 through the overlapping portion 203, and the first electrodes 410 on both sides of the first wiring 201 can be insulated and isolated at the same time or one of them can be isolated, and the connection states of the first electrodes 410 on both sides do not affect each other. However, when the overlapping portion 203 between one of the first electrodes 410 and the first wiring 201 is cut, the inflow current of the other first electrode 410 increases, and the brightness of the corresponding sub-light-emitting unit 301 increases.

[0104] Optionally, in the first direction X, the two sub-light emitting units 301 corresponding to the two first electrodes 410 electrically connected on both sides of the first wiring 201 through the overlapping portion 203 belong to the same light emitting unit 310 . The two first electrodes 410 corresponding to the two sub-light-emitting units 301 in the same light-emitting unit 310 can control their connection states respectively. When a dark spot appears in the light-emitting unit 310, the dark spot is located at a certain sub-light-emitting unit 301 in the light-emitting unit 310, and the overlapping portion 203 connecting the first electrode 410 corresponding to the sub-light-emitting unit 301 is cut off to disconnect the first electrode 410 from other first electrodes 410. Since the first electrodes 410 corresponding to the sub-light-emitting units 301 in the same light-emitting unit 310 are connected in parallel, the current flowing into the first electrodes 410 corresponding to other sub-light-emitting units 301 in the light-emitting unit 310 increases, thereby increasing the brightness of the corresponding sub-light-emitting unit 301 to compensate for the missing brightness of the sub-light-emitting unit 301 at the position where the dark spot appears, thereby improving the problem that the display panel 10 is prone to dark spots and the like, and improving the display effect of the display panel 10.

[0105] See also Figure 10 to Figure 11 , Fig.10 is a partial top view of a display panel in yet another embodiment; Fig.11 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0106] like Fig.10 and Fig.11 As shown, in some optional embodiments, the auxiliary electrode 200 also includes a second routing line 202 arranged side by side along the second direction Y, part of the first electrode 410 is electrically connected to the first routing line 201, and another part of the first electrode 410 is electrically connected to the second routing line 202, and the first direction X and the second direction Y intersect.

[0107] In these optional embodiments, the second lines 202 arranged side by side along the second direction Y and the first lines 201 arranged side by side along the first direction X intersect with each other to form a plurality of grid spaces. When preparing the first electrode layer 400, the first electrode layer 400 is disconnected at the positions of the first lines 201 and the second lines 202 to form the first electrodes 410, and each first electrode 410 is located in each grid space and is electrically connected to the auxiliary electrode 200, thereby forming a whole-surface electrode. When the auxiliary electrode 200 includes the first lines 201 and the second lines 202, the first lines 201 and the second lines 202 form a mesh structure, and when preparing the light-emitting layer 300 and the first electrode layer 400, the light-emitting layer 300 and the first electrode layer 400 can be disconnected at the position of the auxiliary electrode 200 to form the light-emitting unit 310 and the first electrode 410, thereby reducing the use and development of precision masks and reducing process costs.

[0108] In some optional embodiments, within the same light-emitting unit 310 , one of the two first electrodes 410 corresponding to two adjacent sub-light-emitting units 301 is electrically connected to the first wiring 201 , and the other is electrically connected to the second wiring 202 .

[0109] Optionally, in the same light-emitting unit 310 , two adjacent sub-light-emitting units 301 are spaced apart from each other along the first direction X.

[0110] In these optional embodiments, within the same light-emitting unit 310, the first electrodes 410 corresponding to the two sub-light-emitting units 301 are electrically connected to the first wiring 201 and the second wiring 202, respectively. When a dark spot appears in one of the sub-light-emitting units 301, the connection portion between the corresponding first electrode 410 and the first wiring 201 is insulated and cut, thereby reducing the influence on the connection state between the first electrode 410 corresponding to the other sub-light-emitting unit 301 and the first wiring 201.

[0111] See also Fig.12 , Fig.12 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0112] like Fig.12 As shown, in some optional embodiments, among the first electrodes 410 corresponding to two adjacent light-emitting units 310 in the first direction X, one is electrically connected to the first wiring 201 , and the other is electrically connected to the second wiring 202 .

[0113] The light-emitting unit 310 is electrically connected to the first wiring 201 or the second wiring 202 , which means that each sub-light-emitting unit 301 in the same light-emitting unit 310 is connected to the first wiring 201 or the second wiring 202 .

[0114] In these optional embodiments, two adjacent light-emitting units 310 are electrically connected to the first wiring 201 and the second wiring 202, respectively. When a dark spot appears in the sub-light-emitting unit 301 in one of the light-emitting units 310 and the first electrode 410 corresponding to the sub-light-emitting unit 301 with the dark spot needs to be insulated and isolated, the connection part between the first electrode 410 and the first wiring 201 or the second wiring 202 is cut, which can reduce the impact on the connection state between the corresponding first electrode 410 in the other light-emitting unit 310 and the first wiring 201 or the second wiring 202.

[0115] In some optional embodiments, the second wiring 202 is provided with a lap portion 203 toward the light emitting unit 310 , and the second wiring 202 and the first electrode 410 are electrically connected via the lap portion 203 .

[0116] The lap portion 203 is formed by extending the second wiring 202 toward the light emitting unit 310 , that is, the lap portion 203 is electrically connected to the second wiring 202 .

[0117] In these optional embodiments, the second wiring 202 is provided with a lap joint 203 toward the sub-light-emitting unit 301, and the first electrode 410 is electrically connected to the second wiring 202 through the lap joint 203. When the first electrode 410 needs to be insulated and isolated, the corresponding lap joint 203 can be directly cut to achieve insulation between the first electrode 410 and the second wiring 202. And by cutting the lap joint 203, the connection between the second wiring 202 and the other first electrodes 410 will not be affected. At this time, the connection between the second wiring 202 and the first electrode 410 can be multiple. For example, the second wiring 202 can be connected only to the second electrode 510 on one side in the second direction Y, or the second wiring 202 is provided with lap joints 203 on both sides of the second direction Y, and each lap joint 203 is electrically connected to each first electrode 410.

[0118] In some optional embodiments, the first wiring 201 and the second wiring 202 are insulated from each other.

[0119] The insulation arrangement of the first wiring 201 and the second wiring 202 may be that the first wiring 201 and the second wiring 202 are located in different layers, and an insulation layer is arranged between the first wiring 201 and the second wiring 202 to achieve insulation between the first wiring 201 and the second wiring 202 .

[0120] In these optional embodiments, the first wiring 201 and the second wiring 202 are two independent signal supply channels. When the two sub-light-emitting units 301 in the same light-emitting unit 310 are electrically connected to the first wiring 201 and the second wiring 202 respectively, the first wiring 201 and the second wiring 202 can realize white and a certain pure color by alternating signal supply, and realize independent control of the two sub-light-emitting units 301. When a bright spot appears in one of the sub-light-emitting units 301, the first wiring 201 or the second wiring 202 connected to it is cut off, or the signal supply of the first wiring 201 or the second wiring 202 is adjusted, so that the sub-light-emitting unit 301 with the bright spot is not lit or the brightness is reduced, so as to improve the bright spot problem. When a dark spot appears in a sub-light-emitting unit 301, the electrical connection between it and the first wiring 201 or the second wiring 202 is cut off, and then the electrical signal of the other sub-light-emitting unit 301 is increased to compensate for the problem of lack of brightness.

[0121] See 13, Fig.13 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0122] like Fig.13 As shown, in some optional embodiments, at least two second wirings 202 are arranged between two adjacent first electrodes 410 in the second direction Y.

[0123] In these optional embodiments, two adjacent first electrodes 410 in the second direction Y are electrically connected to two second traces 202 respectively, so that the connection between each first electrode 410 and the second trace 202 is relatively independent, thereby reducing mutual influence between each first electrode 410 .

[0124] The above embodiments respectively describe how to improve the dark spot problem by cutting the auxiliary electrode 200 or cutting the second electrode 510. In some embodiments, the auxiliary electrode 200 and the second electrode 510 are cut simultaneously to better adapt to the dark spot problem in actual scenes.

[0125] In some optional embodiments, the display panel 10 includes a pixel definition layer 600, which is located on the substrate 100. The pixel definition layer 600 includes a pixel defining portion 610 and a pixel opening 620 formed by the pixel defining portion 610. Each sub-light-emitting unit 301 is located in each pixel opening 620, and the first electrode 410 is arranged to cover the pixel opening 620.

[0126] In these optional embodiments, the pixel defining portion 610 is used to protect the peripheral side of the second electrode 510 and reduce the corrosion of water and oxygen on the second electrode 510. The pixel defining portion 610 encloses and forms a pixel opening 620 to expose the second electrode 510, and the sub-light emitting unit 301 is arranged in the pixel opening 620 and contacts the second electrode 510. The second electrode 510 cooperates with the first electrode 410 covering the pixel opening 620, and the two serve as the anode and cathode of the sub-light emitting unit 301, respectively, to ensure the normal light emission of the sub-light emitting unit 301.

[0127] In the display panel disclosed herein, in a first direction, at least a portion of the auxiliary electrodes located on at least one side of the first electrode are arranged on a side of the pixel defining portion away from the substrate; in a second direction, clearance openings are opened on the pixel defining portions on both sides of the first electrode; in the second direction, at least a portion of the auxiliary electrodes on both sides of the first electrode are arranged in the clearance openings.

[0128] Please also read Figures 14 to 16 , Fig.14 yes Fig.10 Partial cross-sectional view at the middle BB; Fig.15 yes Fig.10 Partial cross-sectional view at CC; Fig.16 yes Fig.10 Partial cross-sectional view at DD in the middle. Fig.14 A cross-sectional view of the display panel 10 at the location of the overlapping portion 203 in the first direction X is shown for illustration. Fig.15 A cross-sectional view of the display panel 10 in the first direction X where the overlapping portion 203 does not exist is shown for illustration. Fig.16A cross-sectional view of the display panel 10 in the second direction Y is shown for illustration. Fig.10 The cross sections at each position are explained schematically.

[0129] like Figure 2 As shown, in some optional embodiments, in the first direction X, the auxiliary electrode 200 on at least one side of the first electrode 410 is arranged on the side of the pixel defining portion 610 away from the substrate 100, that is, the first wiring 201 is arranged on the side of the pixel defining portion 610 away from the substrate 100 and contacts the first electrode 410. Fig.16 As shown, in the second direction Y, the pixel defining portion 610 on both sides of the first electrode 410 is provided with a clearance opening 630, and the auxiliary electrodes 200 on both sides of the first electrode 410 in the second direction Y are arranged in the clearance opening 630, that is, the second wiring 202 is arranged in the clearance opening 630. Among them, the first electrode 410 can be spaced apart from the side wall of the clearance opening 630. The second wiring 202 arranged in the clearance opening 630 can be insulated from the first electrode 410 or electrically connected through the overlapping portion 203. When the second wiring 202 arranged in the clearance opening 630 is insulated from the first electrode 410, the second wiring 202 arranged in the clearance opening 630 can be spaced apart from the side wall of the clearance opening 630. Among them, when the second wiring 202 arranged in the clearance opening 630 is electrically connected to the first electrode 410 through the overlapping portion 203, the overlapping portion 203 can be arranged on the side of the pixel defining portion 610 away from the substrate 100. In addition, when the first electrode 410 is electrically connected to the first wiring 201 through the overlapping portion 203, in the first direction X, the pixel defining portions 610 on both sides of the first electrode 410 are also provided with clearance openings 630, the first wiring 201 is arranged in the clearance openings 630, and the overlapping portion 203 is on the side of the pixel defining portion 610 away from the substrate 100, and contacts the first wiring 201 arranged in the clearance openings 630.

[0130] In these optional embodiments, Figure 2 As shown, when the auxiliary electrode 200 is disposed on the side of the pixel defining portion 610 away from the substrate 100, the first electrode layer 400 is evaporated, and the first electrode 410 formed by the first electrode layer 400 being separated by the auxiliary electrode 200 falls into the grid space and is electrically connected to the part of the auxiliary electrode 200. Fig.16 As shown, in the second direction Y, the auxiliary electrodes 200 on both sides of the first electrode 410 are arranged in the make way opening 630, which can reduce the possibility of the first electrode 410 being connected to the part of the auxiliary electrode 200, so that the first electrode 410 is only electrically connected to the auxiliary electrode 200 on at least one side in the first direction X, which is convenient for subsequent cutting of dark spots and can reduce the impact on the connection status between other first electrodes 410 and auxiliary electrodes 200.

[0131] In some optional embodiments, such as Fig.16 As shown, in the second direction Y, the auxiliary electrodes 200 on both sides of the first electrode 410 are arranged in the make way opening 630; in the second direction Y, the cross-section of the pixel defining portion 610 on both sides of the first electrode 410 has a side facing the auxiliary electrode 200, and the side and the surface of the substrate 100 close to the pixel definition layer 600 form a preset angle α, and the preset angle α is 50° to 90°.

[0132] In these optional embodiments, when the auxiliary electrodes 200 located on both sides of the first electrode 410 in the second direction Y are arranged in the makeshift opening 630, the preset angle α of the pixel defining portion 610 on the side of the auxiliary electrode 200 is greater than or equal to 50°, which can reduce the possibility of the evaporated first electrode layer 400 being deposited between the auxiliary electrode 200 and the pixel defining portion 610 and falling into the makeshift opening 630 to be electrically connected to the auxiliary electrode 200, thereby achieving at least one side of the first electrode 410 in the first direction X being electrically connected to the auxiliary electrode 200, and both sides of the first electrode 410 in the second direction Y being difficult to connect to the auxiliary electrode 200.

[0133] In some optional embodiments, such as Fig.16 As shown, the distance between the surface of the pixel defining portion 610 away from the substrate 100 and the substrate 100 is a first distance, and the distance between the surface of the auxiliary electrode 200 located in the clearance opening 630 away from the substrate 100 and the substrate 100 is a second distance, and the first distance is greater than the second distance.

[0134] In these optional embodiments, the first distance is greater than the second distance, that is, the surface of the pixel defining portion 610 away from the substrate 100 is higher than the surface of the auxiliary electrode 200 located in the clearance opening 630 away from the substrate 100, which can reduce the possibility of the evaporated first electrode layer 400 being deposited between the auxiliary electrode 200 and the pixel defining portion 610 and falling into the clearance opening 630 to be electrically connected to the auxiliary electrode 200, thereby achieving electrical connection of the first electrode 410 with the auxiliary electrode 200 on at least one side in the first direction X, and difficulty in connecting with the auxiliary electrode 200 on both sides in the second direction Y.

[0135] Optionally, the light emitting layer 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).

[0136] In some optional embodiments, the auxiliary electrode 200 further includes a second layer 220 located on the side of the first conductive layer 210 facing away from the substrate 100 , and the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100 .

[0137] In these optional embodiments, the first conductive layer 210 and the second layer 220 are arranged to form the auxiliary electrode 200, the orthographic projection of the first conductive layer 210 arranged near the substrate 100 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100, the area of ​​the second layer 220 is larger than the area of ​​the first conductive layer 210, and the second layer 220 covers the surface of the first conductive layer 210 near the second layer 220, and at this time, the first conductive layer 210 is recessed relative to the second layer 220 in the direction away from the pixel opening 620. When preparing the light-emitting layer 300 and the first electrode layer 400, the first electrode layer 400 and the light-emitting layer 300 have a large drop at the edge of the auxiliary electrode 200, and the first conductive layer 210 is recessed relative to the second layer 220, and the first electrode layer 400 and the light-emitting layer 300 are difficult to connect at the edge of the auxiliary electrode 200, so they are broken, the first electrode layer 400 is broken to form mutually spaced first electrodes 410, and the light-emitting layer 300 is broken to form mutually disconnected light-emitting units 310.

[0138] In some optional embodiments, the first conductive layer 210 and the second layer 220 are both made of metal materials, and the materials of the first conductive layer 210 and the second layer 220 are different.

[0139] In these optional embodiments, when both the first conductive layer 210 and the second layer 220 are made of metal materials, the first conductive layer 210 may be wet-etched with an etching solution, and the etching solution may be set so that the etching rate of the second layer 220 is lower than the etching rate of the first conductive layer 210. Since the etching rate of the first conductive layer 210 is relatively high, when the etching solution is used for wet etching, even if the second layer 220 is etched to a certain extent, the first conductive layer 210 is etched faster, so that the first conductive layer 210 is set concave relative to the second layer 220.

[0140] Optionally, the second layer 220 is an insulating material. When the second layer 220 is an insulating material, the second layer 220 is difficult to be etched during wet etching of the first conductive layer 210 using an etching solution, thereby making it easier for the first conductive layer 210 to be concave relative to the second layer 220 .

[0141] Optionally, the cross-sectional shape of the first conductive layer 210 along the thickness direction Z includes a trapezoid. When the cross-sectional shape of the first conductive layer 210 is a trapezoid, on the one hand, the second layer 220 can be stably supported, and on the other hand, the first conductive layer 210 is equivalent to the concave setting of the second layer 220, which facilitates the disconnection of the first electrode layer 400 at the auxiliary electrode 200 position.

[0142] Optionally, at least a portion of the first conductive layer 210 and at least a portion of the second layer 220 constitute the first trace 201 .

[0143] Optionally, at least a portion of the first conductive layer 210 and at least a portion of the second conductive layer 220 constitute the second trace 202 .

[0144] Optionally, part of the first conductive layer 210 and part of the second layer 220 constitute the overlapping portion 203. The overlapping portion 203 and the auxiliary electrode 200 are also composed of the first conductive layer 210 and the second layer 220. The overlapping portion 203 and the auxiliary electrode 200 can be prepared simultaneously to simplify the preparation process.

[0145] See also Fig.17 , Fig.17 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0146] like Fig.17 As shown, in some optional embodiments, the light-emitting unit 310 includes a first light-emitting unit 311, a second light-emitting unit 312 and a third light-emitting unit 313 arranged in an array, and the same auxiliary electrode 200 is arranged around at least one of the first light-emitting unit 311, the second light-emitting unit 312 and the third light-emitting unit 313.

[0147] The same auxiliary electrode 200 is arranged around at least one of the first light-emitting unit 311, the second light-emitting unit 312 and the third light-emitting unit 313, which means that the same auxiliary electrode 200 is arranged around one or more first light-emitting units 311, or the same auxiliary electrode 200 is arranged around one or more second light-emitting units 312, or the same auxiliary electrode 200 is arranged around one or more three light-emitting units 310.

[0148] In these optional embodiments, the same auxiliary electrode 200 isolates at least one of the first light-emitting unit 311 , the second light-emitting unit 312 and the third light-emitting unit 313 from the other light-emitting units 310 , thereby improving the crosstalk problem of carriers between light-emitting units 310 of different colors.

[0149] Optionally, the first light-emitting unit 311 is a red light-emitting unit, the second light-emitting unit 312 is a green light-emitting unit, and the third light-emitting unit 313 is a blue light-emitting unit. The first light-emitting unit 311, the second light-emitting unit 312, and the third light-emitting unit 313 are light-emitting units 310 of three different colors. When the light-emitting layer 300 and the first electrode layer 400 are prepared with the auxiliary electrode 200 as a mask, the light-emitting units 310 of different colors are prepared separately in different steps to ensure the normal light emission of each light-emitting unit 310. Therefore, a light-emitting unit 310 of one color exists in a grid space enclosed by the auxiliary electrode 200.

[0150] See also Fig.18 , Fig.18 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0151] like Fig.18 As shown, in some optional embodiments, the auxiliary electrode 200 is disposed around a plurality of first light-emitting units 311 , or the auxiliary electrode 200 is disposed around a plurality of second light-emitting units 312 , or the auxiliary electrode 200 is disposed around a plurality of third light-emitting units 313 .

[0152] Optionally, an auxiliary electrode 200 is disposed between adjacent light-emitting units 310 of different colors.

[0153] In these optional embodiments, a plurality of light-emitting units 310 of the same color may be arranged in a grid space enclosed by the auxiliary electrode 200, and the light-emitting units 310 of the same color will not have a cross-color problem caused by crosstalk of carriers between the light-emitting layers 300. The light-emitting units 310 of different colors are separated by the auxiliary electrode 200 to improve the problem of cross-color caused by crosstalk between the light-emitting units 310 of different colors.

[0154] Optionally, in some optional embodiments, the auxiliary electrodes 200 extend in a grid shape along the first direction X and the second direction Y, and the first direction X and the second direction Y intersect.

[0155] The auxiliary electrode 200 is in a grid shape, which means that the auxiliary electrode 200 extends in the first direction X and the second direction Y, and the portion extending in the first direction X and the portion extending in the second direction Y are cross-connected to each other to form a plurality of grid spaces, and the pixel opening 620 and the pixel defining portion 610 are located in the grid space, so that the auxiliary electrode 200 surrounds the pixel opening 620.

[0156] In these optional embodiments, the auxiliary electrode 200 extends in a grid shape along the first direction X and the second direction Y, so that the first electrode layer 400 and the light-emitting layer 300 are separated by the auxiliary electrode 200 in the first direction X and the second direction Y, further improving the crosstalk of carriers between the light-emitting layers 300.

[0157] Optionally, the auxiliary electrode 200 and the pixel opening 620 are arranged at equal intervals.

[0158] The equal spacing arrangement means that the minimum distance between each point on the surface of the auxiliary electrode 200 close to the pixel opening 620 and the pixel opening 620 on any cross section of a reference plane parallel to the substrate 100 is equal.

[0159] In these optional embodiments, the auxiliary electrodes 200 are arranged regularly by being arranged at equal intervals, which not only separates the first electrode layer 400 and the light-emitting layer 300 at the position of the auxiliary electrodes 200, but also makes the area distribution of the first electrode 410 and the light-emitting unit 310 more regular, thereby ensuring the uniformity of light emission from the light-emitting unit 310.

[0160] The structural design in this embodiment can be applied to other display panels 1010 , and the specific selection can be made according to actual conditions, and this application does not impose any specific restrictions on it.

[0161] The embodiment of the second aspect of the present application also provides a display device, including the display panel 10 of any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any of the above-mentioned first aspect 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 first aspect embodiments, which will not be repeated here.

[0162] 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.

[0163] The third aspect of the present application also provides a method for preparing a display panel 10. The display panel 10 may be any of the display panels 10 provided in the first aspect of the present application. Figures 1 to 18 , and see Fig.19 , Fig.19 1 is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application. The preparation method comprises:

[0164] Step S01: preparing an auxiliary electrode on a substrate.

[0165] Step S02: preparing a light-emitting layer on the side of the auxiliary electrode facing away from the substrate, wherein the light-emitting layer comprises light-emitting units spaced apart from each other, and the light-emitting unit comprises a plurality of adjacently arranged sub-light-emitting units of the same color.

[0166] Step S03: Prepare a first electrode layer on the side of the light-emitting layer facing away from the substrate, the first electrode layer includes first electrodes spaced apart from each other and located on the side of each sub-light-emitting unit facing away from the substrate, two first electrodes corresponding to any two sub-light-emitting units are spaced apart, and the first electrode and the auxiliary electrode are electrically connected.

[0167] According to the preparation method of the third aspect of the present application, an auxiliary electrode 200 is prepared on a substrate 100 by step S01. Then, a light-emitting layer 300 is prepared by step S02. When preparing the light-emitting layer 300, the light-emitting layer 300 is disconnected at the position of the auxiliary electrode 200 to form light-emitting units 310 that are spaced apart from each other. Each light-emitting unit 310 is divided into a plurality of adjacent sub-light-emitting units 301 by the auxiliary electrode 200. Finally, a first electrode layer 400 is prepared by step S03. The first electrode layer 400 is disposed on a side of the light-emitting layer 300 that is away from the substrate 100, and is disconnected by the auxiliary electrode 200 to form a plurality of spaced first electrodes 410. The first electrode 410 is located on a side of the sub-light-emitting unit 301 that is away from the substrate 100, and serves as an electrode of the sub-light-emitting unit 301. Since the light-emitting unit 310 is divided into a plurality of sub-light-emitting units 301, when a dark spot appears in the light-emitting unit 310, the dark spot is located at a certain sub-light-emitting unit 301 in the light-emitting unit 310, and the auxiliary electrode 200 is partially cut at the connection position between the first electrode 410 corresponding to the sub-light-emitting unit 301 and the auxiliary electrode 200, so that the first electrode 410 is insulated from the auxiliary electrode 200. Since the first electrodes 410 corresponding to the sub-light-emitting units 301 in the same light-emitting unit 310 are connected in parallel, when the first electrode 410 is disconnected from other first electrodes 410, the current flowing into the first electrodes 410 corresponding to other sub-light-emitting units 301 in the light-emitting unit 310 increases, thereby increasing the brightness of the corresponding sub-light-emitting unit 301 to compensate for the missing brightness of the sub-light-emitting unit 301 where the dark spot appears, thereby improving the problem that the display panel 10 is prone to dark spots and the like, and improving the display effect of the display panel 10.

[0168] According to the embodiments described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; An auxiliary electrode, located on the substrate; A light-emitting layer, located on the substrate, the light-emitting layer comprises light-emitting units arranged at intervals from each other, and the light-emitting unit comprises a plurality of sub-light-emitting units; The first electrode layer is located on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode located on the side of each sub-light-emitting unit away from the substrate. Two first electrodes corresponding to any two sub-light-emitting units are arranged at intervals. The first electrode is electrically connected to the auxiliary electrode.

2. The display panel according to claim 1, characterized in that: The display panel further includes: A second electrode layer, located on the substrate, the second electrode layer comprising second electrodes spaced apart from each other and located on a side of the light-emitting unit facing the substrate; In the same light-emitting unit, the orthographic projection of each of the sub-light-emitting units on the substrate at least partially overlaps with the orthographic projection of the same second electrode on the substrate; Preferably, the second electrode comprises sub-second electrodes arranged at intervals and connecting segments connecting adjacent sub-second electrodes, and the orthographic projection of the sub-light-emitting unit on the substrate at least partially overlaps with the orthographic projection of the sub-second electrode on the substrate; Preferably, in the sub-light-emitting unit and the sub-second electrode that are stacked on each other, the orthographic projection of the sub-light-emitting unit on the substrate is located within the orthographic projection of the sub-second electrode on the substrate; Preferably, the size of the connecting segment is smaller than the size of the sub-second electrode; Preferably, within the same light-emitting unit, the colors of the plurality of sub-light-emitting units are the same.

3. The display panel according to claim 1, characterized in that: The auxiliary electrode comprises a plurality of first wirings arranged side by side along a first direction, the first wirings are staggered with the first electrodes in the first direction, and at least part of the first electrodes is electrically connected to at least one of the first wirings; Preferably, the auxiliary electrode comprises a first conductive layer and a second layer located on a side of the first conductive layer away from the substrate, the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second layer on the substrate; at least part of the first conductive layer and at least part of the second layer constitute the first trace; Preferably, the display panel comprises a pixel definition layer, the pixel definition layer is located on the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, each of the sub-light emitting units is located at each of the pixel openings, the first electrode is arranged to cover the pixel opening, and the first wiring is arranged on a side of the pixel definition portion away from the substrate; Preferably, the auxiliary electrode further includes a second wiring arranged side by side along a second direction, the first direction and the second direction intersect, the second wiring is insulated from the first electrode, and the second wiring is electrically connected to the first wiring; Preferably, in the second direction, the pixel defining portions on both sides of the first electrode are provided with clearance openings, and the second wiring located on at least one side of the first electrode is arranged in the clearance openings; Preferably, the second wiring arranged in the making way opening is spaced apart from a side wall of the making way opening.

4. The display panel according to claim 3, characterized in that: The first electrode is electrically connected to two first wirings at two sides in the first direction; Alternatively, the first electrodes are electrically connected to the first wirings on the same side in the first direction; Preferably, a plurality of the first electrodes distributed along a second direction are electrically connected to the same first wiring, and the first direction and the second direction intersect.

5. The display panel according to claim 3, characterized in that: The auxiliary electrode comprises a lap portion extending from the first wiring toward the sub-light emitting unit, and the first electrode and the lap portion are electrically connected; Preferably, the first wiring is provided with the overlapping parts on both sides of the first direction, and each overlapping part is electrically connected to each first electrode; Part of the first conductive layer and part of the second layer constitute the overlapping portion; Preferably, the display panel includes a pixel definition layer, which is located on the substrate, and the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, each of the sub-light-emitting units is located at each of the pixel openings, and the first electrode is arranged to cover the pixel openings; in a first direction, the pixel defining portions on both sides of the first electrode are provided with clearance openings, and the first wiring located on at least one side of the first electrode is arranged in the clearance openings; the overlapping portion is arranged on a side of the pixel defining portion away from the substrate, and is electrically connected to the first wiring in the clearance opening.

6. The display panel according to claim 3, characterized in that: The auxiliary electrode further includes a second routing line arranged side by side along a second direction, a portion of the first electrode is electrically connected to the first routing line, another portion of the first electrode is electrically connected to the second routing line, and the first direction intersects with the second direction; Preferably, in the same light-emitting unit, one of the two first electrodes corresponding to two adjacent sub-light-emitting units is electrically connected to the first wiring, and the other is electrically connected to the second wiring; Preferably, of the first electrodes corresponding to two adjacent light-emitting units in the first direction, one is electrically connected to the first wiring, and the other is electrically connected to the second wiring; Preferably, part of the first conductive layer and part of the second layer constitute the second trace; Preferably, the auxiliary electrode comprises a lap portion extending from the second wiring toward the light emitting unit, and the second wiring and the first electrode are electrically connected via the lap portion; Preferably, part of the first conductive layer and part of the second layer constitute the overlapping portion; Preferably, the display panel includes a pixel definition layer, which is located on the substrate, and the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, each of the sub-light-emitting units is located at each of the pixel openings, and the first electrode is arranged to cover the pixel openings; in the second direction, the pixel defining portions on both sides of the first electrode are provided with clearance openings, and the second wiring located on at least one side of the first electrode is arranged in the clearance opening; the overlapping portion is arranged on a side of the pixel defining portion away from the substrate, and is electrically connected to the second wiring in the clearance opening.

7. The display panel according to claim 6, characterized in that: The first wiring and the second wiring are insulated; Preferably, the first routing line and the second routing line are located in different layers, and an insulating layer is provided between the first routing line and the second routing line; Preferably, at least two second wirings are arranged between two adjacent first electrodes in the second direction.

8. The display panel according to claim 1, characterized in that: The display panel comprises: A pixel definition layer is located on the substrate, the pixel definition layer includes a pixel definition part and a pixel opening formed by the pixel definition part, each of the sub-light emitting units is located at each of the pixel openings, and the first electrode covers the pixel opening; in a first direction, at least part of the auxiliary electrode located on at least one side of the first electrode is arranged on a side of the pixel definition part away from the substrate; in a second direction, the pixel definition parts on both sides of the first electrode are provided with a clearance opening; in the second direction, at least part of the auxiliary electrodes on both sides of the first electrode are arranged in the clearance opening; Preferably, in the second direction, the cross-sections of the pixel defining portions on both sides of the first electrode have side edges facing the auxiliary electrode, and the side edges and the surface of the substrate close to the pixel definition layer form a preset angle, and the preset angle is 50° to 90°; Preferably, the distance between the pixel defining portion and the surface of the substrate away from the substrate is a first distance, the distance between the auxiliary electrode located in the clearance opening and the surface of the substrate away from the substrate is a second distance, and the first distance is greater than the second distance.

9. A display device, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A method for preparing a display panel, characterized in that: include: preparing an auxiliary electrode on the substrate; A light-emitting layer is prepared on a side of the auxiliary electrode away from the substrate, wherein the light-emitting layer comprises light-emitting units arranged at intervals from each other, and the light-emitting unit comprises a plurality of sub-light-emitting units; A first electrode layer is prepared on the side of the light-emitting layer away from the substrate, the first electrode layer includes first electrodes that are spaced apart from each other and located on the side of each sub-light-emitting unit away from the substrate, two first electrodes corresponding to any two sub-light-emitting units are spaced apart from each other, and the first electrode is electrically connected to the auxiliary electrode.

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