Display panel, display device and preparation method of display panel

Abstract

The embodiment of the invention provides a display panel, a display device and a preparation method of the display panel, and the display panel comprises a substrate; the first electrode layer is arranged on the substrate, and the first electrode layer comprises a plurality of first electrodes which are distributed at intervals; the light-transmitting conductive layer comprises a first protection part and a light-transmitting conductive part which are distributed at an interval, and the orthographic projection of the first protection part on the substrate and the orthographic projection of the first electrode on the substrate are at least partially overlapped; the pixel defining layer is arranged on the side, away from the substrate, of the first electrode layer, and the pixel defining layer comprises a pixel limiting part and a first opening formed in the pixel limiting part; the isolation structure is arranged on the side, away from the substrate, of the pixel definition layer, an isolation opening and a light-transmitting opening are defined by the isolation structure, the orthographic projection of the isolation opening on the substrate and the orthographic projection of the first opening on the substrate are at least partially overlapped, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting conductive part on the substrate are at least partially overlapped. The processing performance of the display panel can be improved.

Description

Technical Field

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

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

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

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

[0005] An embodiment of the first aspect of the present application provides a display panel, comprising: a substrate; a first electrode layer, arranged on one side of the substrate, the first electrode layer comprising a plurality of first electrodes distributed at intervals; a light-transmitting conductive layer, arranged on one side of the substrate, the light-transmitting conductive layer comprising a light-transmitting conductive portion; a pixel definition layer, arranged on a side of the first electrode layer away from the substrate and covering at least a portion of the light-transmitting conductive portion, the pixel definition layer comprising a pixel defining portion and a first opening opened in the pixel defining portion; a light-emitting layer comprising a light-emitting unit located in the first opening; an isolation structure, arranged on a side of the pixel definition layer away from the substrate, the isolation structure enclosing an isolation opening and a light-transmitting opening, the orthographic projection of the isolation opening on the substrate and the orthographic projection of the first opening on the substrate at least partially overlap, and the orthographic projection of the light-transmitting opening on the substrate and the orthographic projection of the light-transmitting conductive portion on the substrate at least partially overlap.

[0006] According to an implementation of the first aspect of the present application, the light-transmitting conductive layer is disposed on a side of the first electrode layer facing away from the substrate.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the light-transmitting conductive layer further includes a first protecting portion, and the first protecting portion covers at least a portion of the first electrode.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, an orthographic projection of the first opening on the substrate and an orthographic projection of the first protecting portion on the substrate at least partially overlap.

[0009] According to any of the foregoing embodiments of the first aspect of the present application, the first electrode includes a first sub-layer, a second sub-layer, and a third sub-layer stacked in a direction away from the substrate, and the first protection portion is located on a side of the third sub-layer away from the second sub-layer.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the first electrode on the substrate is located within the orthographic projection of the first protection portion on the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of the present application, one first protection portion and at least one shield are connected to each other to form a light-transmissive conductive portion, and the light-transmissive conductive portions are spaced apart and insulated from each other; or, the first protection portions and the light-transmissive conductive portions are spaced apart from each other, and the substrate includes a second power signal line, and the light-transmissive conductive portion is connected to the second power signal line.

[0012] According to any of the foregoing embodiments of the first aspect of the present application, a second opening is formed in the pixel defining portion, and the orthographic projection of the second opening on the substrate and the orthographic projection of the light-transmissive opening on the substrate overlap at least partially.

[0013] According to any of the foregoing embodiments of the first aspect of the present application, the pixel definition layer further includes a second protection portion, and the second protection portion is located on a side of the light-transmissive conductive portion away from the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the light-transmissive conductive portion on the substrate is located within the orthographic projection of the second protection portion on the substrate.

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the light-transmissive opening on the substrate is located within the orthographic projection of the second protection portion on the substrate.

[0016] According to any of the foregoing embodiments of the first aspect of the present application, the second protection portion and the pixel defining portion are provided on the same layer.

[0017] According to any of the foregoing embodiments of the first aspect of the present application, the isolation structure and the light-transmissive conductive portion are electrically connected to each other.

[0018] According to any of the foregoing embodiments of the first aspect of the present application, a first communication hole is formed in the pixel definition layer, and the isolation structure is connected to the light-transmissive conductive portion through the first communication hole.

[0019] According to any of the foregoing embodiments of the first aspect of the present application, at least one first communication hole is correspondingly provided for each light-transmissive conductive portion.

[0020] According to any of the foregoing embodiments of the first aspect of the present application, the first communication hole surrounds the light-transmissive opening in a ring shape; or, at least one first communication hole is provided on at least one side of the light-transmissive opening.

[0021] According to any of the aforementioned implementations of the first aspect of the present application, the first connecting hole is located in the display area of ​​the display panel.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure includes a first sublayer and a second sublayer located on the side of the first sublayer facing away from the substrate, the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the second sublayer on the substrate, and the first sublayers are interconnected via the first connecting hole and the light-transmitting conductive part.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure also includes a third sublayer located on the side of the first protective portion facing the substrate, the orthographic projection of the first sublayer on the substrate is located at the orthographic projection of the third sublayer on the substrate, and the third sublayer is interconnected with the light-transmitting conductive portion via the first connecting hole, so that the first sublayer is connected to the light-transmitting conductive portion through the third sublayer.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes a second electrode layer, the second electrode layer includes a second electrode located on a side of the light-emitting unit away from the substrate, and the second electrode is connected to the isolation structure.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the second electrode and the first sublayer are connected to each other.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the second electrode and the third sublayer are connected to each other.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a first power signal line, the first power signal line is located inside the substrate or on one side of the substrate, a second connecting hole is opened on the pixel defining portion, and the isolation structure is connected to the first power signal line via the second connecting hole.

[0028] According to any of the aforementioned implementations of the first aspect of the present application, the second connecting hole is located in a non-display area of ​​the display panel.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, a dam structure is further provided on the substrate, the dam structure is provided around the display area of ​​the display panel, and the second connecting hole is located on a side of the dam structure facing the display area.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first electrode on the substrate is located within the orthographic projection of the first protective portion on the substrate.

[0031] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel of any of the above-mentioned embodiments of the first aspect.

[0032] The third aspect of the present application also provides a method for preparing a display panel, including:

[0033] A first electrode material layer is provided on a substrate, and the first electrode material layer is patterned to form a first electrode layer, the first electrode layer including a plurality of first electrodes arranged at intervals;

[0034] A conductive functional material layer is further provided on the substrate, and the conductive functional material layer is patterned to obtain a light-transmissive conductive layer, the light-transmissive conductive layer including a light-transmissive conductive portion;

[0035] A pixel defining material layer is provided on the substrate;

[0036] An isolation structure is prepared on a side of the pixel defining material layer facing away from the substrate, the isolation structure enclosing to form a separation opening and a light-transmissive opening, and a positive projection of the light-transmissive opening on the substrate and a positive projection of the light-transmissive conductive portion on the substrate at least partially overlap;

[0037] The pixel defining material layer exposed by the separation opening is patterned to obtain a first opening.

[0038] According to an embodiment of the third aspect of the present application, in the step of patterning the pixel defining material layer exposed by the separation opening to obtain a first opening, a part of the pixel defining material layer located on a side of the light-transmissive conductive portion facing away from the substrate is retained to form a second protection portion, or a part of the pixel defining material layer located on a side of the light-transmissive conductive portion facing away from the substrate is removed to form a second opening.

[0039] According to any one of the foregoing embodiments of the third aspect of the present application, in the step of providing a pixel defining material layer on the substrate, the pixel defining material layer is patterned to obtain a first communication hole, and a part of the light-transmissive conductive portion is exposed by the first communication hole;

[0040] In the step of preparing an isolation structure on a side of the pixel defining material layer facing away from the substrate, the isolation structure is connected to the light-transmissive conductive portion via the first communication hole;

[0041] Preferably, the display panel further includes a first power signal line, the first power signal line is located inside the substrate or on one side of the substrate, and in the step of providing a pixel defining material layer on the substrate, the pixel defining material layer is further patterned to obtain a second communication hole, and the first power signal line is exposed by the second communication hole,

[0042] In the step of preparing an isolation structure on a side of the pixel defining material layer facing away from the substrate, the isolation structure is connected to the first power signal line via the second communication hole.

[0043] According to any one of the foregoing embodiments of the third aspect of the present application, in the step of further providing a conductive functional material layer on the substrate and patterning the conductive functional material layer to obtain a light-transmissive conductive layer, the light-transmissive conductive layer further includes a first protection portion arranged at intervals from the light-transmissive conductive portion, and the first protection portion covers at least a part of the first electrode;

[0044] In the step of patterning the pixel-defining material layer exposed by the isolation opening to obtain the first opening: at least a part of the first protection part is exposed by the first opening.

[0045] In the display panel provided by the embodiment of the present application, the display panel includes a substrate and a first electrode layer, a light-transmissive conductive layer, a pixel-defining layer, and an isolation structure disposed on the substrate. A first opening is formed in the pixel-defining part of the pixel-defining layer, and the first opening is used to accommodate a light-emitting unit. The orthographic projection of the first opening on the substrate and the orthographic projection of the first electrode of the first electrode layer on the substrate at least partially overlap, so that the first electrode can drive the light-emitting unit in the first opening to emit light. The isolation structure encloses a light-transmissive opening and an isolation opening, and the isolation opening corresponds to the first opening without affecting the light emission of the light-emitting unit. The light-transmissive opening can improve the light transmittance of the display panel. The light-transmissive conductive layer includes a light-transmissive conductive part, and the light-transmissive conductive part corresponds to the light-transmissive opening. When preparing components such as touch electrodes in the subsequent process, it can improve the parasitic capacitance generated between the touch electrode and other components and the conductive wires or circuits in the substrate. Therefore, by providing the light-transmissive conductive part in the embodiment of the present application, the problem of parasitic capacitance can be improved, and thus the process performance of the display panel can be effectively improved. Description of the Drawings

[0046] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals represent the same or similar features.

[0047] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0048] Figure 2 is an example Figure 1 a cross-sectional view taken along line A-A in;

[0049] Figure 3 is another example Figure 1 a cross-sectional view taken along line A-A in;

[0050] Figure 4 is still another example Figure 1 a cross-sectional view taken along line A-A in;

[0051] Figure 5 is yet another example Figure 1 a cross-sectional view taken along line A-A in;

[0052] Figure 6 is a schematic enlarged partial structure diagram of a display panel provided by an embodiment of the present application;

[0053] Figure 7 is a schematic enlarged partial structure diagram of a display panel provided by another embodiment of the present application;

[0054] Figure 8 It is a schematic diagram of a partial enlarged structure of a display panel provided by another embodiment of the present application;

[0055] Figure 9 It is an example Figure 8 A cross-sectional view taken along line B-B;

[0056] Figure 10 It is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0057] Figures 11 to 15 It is a schematic diagram of the process of a method for manufacturing a display panel provided by an embodiment of the present application.

[0058] Explanation of reference numerals:

[0059] 10. Display panel;

[0060] 100. Substrate; 110. First power signal line;

[0061] 200. First electrode layer; 210. First electrode;

[0062] 300. Transparent conductive layer; 310. First protection part; 320. Transparent conductive part;

[0063] 400. Pixel definition layer; 410. Pixel defining part; 420. First opening; 430. Second opening; 440. Second protection part; 450. First communication hole; 460. Second communication hole; 470. Light emitting unit;

[0064] 500. Isolation structure; 501. First sub-layer; 502. Second sub-layer; 503. Third sub-layer; 510. Isolation opening; 520. Transparent opening;

[0065] 600. Second electrode layer; 610. Second electrode;

[0066] 700. Dam;

[0067] 800. Touch function layer; 810. Touch electrode; 820. Bridging part;

[0068] 900. Encapsulation layer; 910. Encapsulation part; 920. Second encapsulation layer; 930. Third encapsulation layer;

[0069] AA. Display area; NA. Non-display area. Detailed implementation manners

[0070] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only provided to better understand the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0071] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0072] The orientation terms appearing in the following description are all the directions shown in the figures, and do not specifically limit the structure of the embodiments of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] For a better understanding of the present application, the following Figures 1 to 15 will describe in detail the display panel, display device, and method for manufacturing a display panel according to the embodiments of the present application.

[0074] Figure 1 is a schematic structural diagram of a display panel 10 provided by an embodiment of the present application; Figure 2 is an example Figure 1 a cross-sectional view taken along line A-A in

[0075] As shown in Figure 1 and Figure 2As shown, an embodiment of the first aspect of the present application provides a display panel 10, which includes a substrate 100 and a first electrode layer 200, a light-transmitting conductive layer 300, a pixel definition layer 400, and an isolation structure 500 disposed on the substrate 100. The first electrode layer 200 is disposed on the substrate 100, and the first electrode layer 200 includes a plurality of first electrodes 210 distributed at intervals; the light-transmitting conductive layer 300 is disposed on one side of the substrate 100, and the light-transmitting conductive layer 300 includes a light-transmitting conductive portion 320; the pixel definition layer 400 is disposed on a side of the first electrode layer 200 away from the substrate 100 and covers at least a portion of the light-transmitting conductive portion 320, and the pixel definition layer 400 includes a pixel defining portion 410 and a first opening 420 opened in the pixel defining portion 410; The light-emitting layer includes a light-emitting unit 470 located in the first opening 420; the isolation structure 500 is arranged on the side of the pixel definition layer 400 away from the substrate 100, and the isolation structure 500 encloses an isolation opening 510 and a light-transmitting opening 520. The orthographic projection of the isolation opening 510 on the substrate 100 and the orthographic projection of the first opening 420 on the substrate 100 at least partially overlap, and the orthographic projection of the light-transmitting opening 520 on the substrate 100 and the orthographic projection of the light-transmitting conductive part 320 on the substrate 100 at least partially overlap.

[0076] In the display panel 10 provided in the embodiment of the present application, the display panel 10 includes a substrate 100 and a first electrode layer 200, a light-transmitting conductive layer 300, a pixel definition layer 400 and an isolation structure 500 disposed on the substrate 100. A first opening 420 is provided on the pixel defining portion 410 of the pixel definition layer 400, and the first opening 420 is used to accommodate a light-emitting unit 470. The orthographic projection of the first opening 420 on the substrate 100 and the orthographic projection of the first electrode 210 of the first electrode layer 200 on the substrate 100 at least partially overlap, so that the first electrode 210 can drive the light-emitting unit 470 in the first opening 420 to emit light. The isolation structure 500 encloses a light-transmitting opening 520 and an isolation opening 510, and the isolation opening 510 and the first opening 420 are disposed correspondingly, and do not affect the light emission of the light-emitting unit 470. The light-transmitting opening 520 can improve the light transmittance of the display panel 10. The light-transmitting conductive layer 300 includes a light-transmitting conductive portion 320, and the light-transmitting conductive portion 320 corresponds to the light-transmitting opening 520. When the touch electrode 810 and other components are subsequently prepared, the parasitic capacitance generated between the touch electrode 810 and other components and the conductive wire or circuit in the substrate 100 can be improved. Therefore, the embodiment of the present application can improve the problem of parasitic capacitance by providing the light-transmitting conductive portion 320, thereby effectively improving the process performance of the display panel 10.

[0077] The substrate 100 can be arranged in various ways. The substrate 100 may include a substrate and a first conductive layer, a second conductive layer, and a third conductive layer that are disposed on one side of the substrate and stacked. Insulating layers are provided between adjacent conductive layers. Exemplarily, the pixel driving circuit provided on the array substrate 100 includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first electrode plate and a second electrode plate. As an example, the gate and the first electrode plate may be located on the first conductive layer, the second electrode plate may be located on the second conductive layer, and the source and the drain may be located on the third conductive layer. Optionally, the substrate 100 may further include a fourth conductive layer. The fourth conductive layer is located on the side of the third conductive layer away from the substrate. The fourth conductive layer may be provided with connection signal lines such that the first electrode 210 is interconnected with the driving circuit through the connection signal lines. For example, the first electrode 210 is interconnected with the source or the drain of the driving transistor through the connection signal lines.

[0078] The first electrode 210 is, for example, an anode. The material of the first electrode 210 may include at least one of indium tin oxide or indium zinc oxide. For example, the material of the first electrode 210 includes indium tin oxide to further improve the light transmittance of the display panel 10. Optionally, the material of the first electrode 210 may further include silver. The first electrode 210 includes, for example, a stacked silver metal layer, an indium tin oxide layer, and a silver metal layer, and the indium tin oxide layer provides protection to the silver metal layer.

[0079] The material of the transparent conductive layer 300 can be arranged in various ways. The material of the transparent conductive layer 300 includes, for example, at least one of indium tin oxide and indium zinc oxide to further improve the light transmittance of the display panel 10.

[0080] In some optional embodiments, the transparent conductive layer 300 is disposed on the side of the first electrode 210 away from the substrate 100, which can improve the influence of the preparation and shaping of the transparent conductive layer 300 on the first electrode 210.

[0081] Optionally, the transparent conductive layer 300 further includes a first protection portion 310 that covers at least a part of the first electrode 210. When patterning the transparent conductive material to form the first protection portion 310 and the transparent conductive portion 320 of the transparent conductive layer 300, the material on the first electrode 210 can be retained to form the first protection portion 210, thereby improving the damage to the first electrode 210 caused by the process of patterning the transparent conductive material.

[0082] Optionally, the orthographic projection of the first opening 420 on the substrate 100 and the orthographic projection of the first protection portion 310 on the substrate 100 at least partially overlap. For example, the orthographic projection of the first opening 420 on the substrate 100 is located within the orthographic projection of the first protection portion 310 on the substrate 100, so that the first electrode 210 can drive the light-emitting unit 470 to emit light via the first protection portion 310 and the first opening 420.

[0083] Optionally, the first electrode 210 includes a first sub-layer, a second sub-layer, and a third sub-layer that are stacked in a direction away from the substrate 100. The first protection portion 310 is located on a side of the third sub-layer away from the second sub-layer. That is, the first protection portion 310 is a layer structure covering the first electrode 210, rather than a layer structure within the first electrode 210. The first sub-layer and the third sub-layer can be the above-mentioned silver metal layers, and the second sub-layer can be the above-mentioned indium tin oxide layer.

[0084] There are various relative position relationships between the first protection portion 310 and the light-transmissive conductive portion 320. For example, as Figure 4 shown, one first protection portion 310 and at least one light-transmissive conductive portion 320 are connected to each other to form a light-transmissive conductive portion, and the light-transmissive conductive portions are insulated from each other at intervals. This enables the light-transmissive conductive portion 320 to have the same potential as the first protection portion 310, and thus the same potential as the first electrode 210. The multiple light-transmissive conductive portions are insulated from each other at intervals, which can avoid the problem of short-circuit connection of different first electrodes 210 through the light-transmissive conductive portion.

[0085] In some other alternative embodiments, as Figure 5 shown, the first protection portion 310 and the light-transmissive conductive portion 320 are insulated from each other at intervals. The substrate 100 further includes a second power signal line 120, and the light-transmissive conductive portion 320 and the second power signal line 120 are connected to each other. For example, a via is provided in the layer structure between the second power signal line 120 and the light-transmissive conductive portion 320, and the light-transmissive conductive portion 320 and the second power signal line 120 are connected through the via, so that the light-transmissive conductive portion 320 can have a fixed potential, better improving the problem of parasitic capacitance. The second power signal line 120 can be, for example, a driving power supply voltage signal line.

[0086] In some other embodiments, the first protection portion 310 and the light-transmissive conductive portion 320 in the light-transmissive conductive layer 300 are arranged at intervals to avoid short-circuit connection between the first protection portion 310 and the light-transmissive conductive portion 320. The first protection portion 310 is located on the side of the first electrode layer 200 away from the substrate 100, and the orthographic projection of the first protection portion 310 on the substrate 100 and the orthographic projection of the first electrode 210 on the substrate 100 overlap at least partially. The first protection portion 310 covers at least part of the surface of the first electrode 210 away from the substrate 100, so that the first protection portion 310 can provide protection to the first electrode 210. When the materials of the light-transmissive conductive layer 300 and the first electrode layer 200 are the same, during the manufacturing process of the display panel 10, the first protection portion 310 on the first electrode 210 can be retained to improve the damage to the first electrode 210 when removing the first protection portion 310, which can increase the service life of the first electrode 210 and improve the yield of the display panel 10.

[0087] Optionally, the material of the pixel definition layer 400 can be an inorganic material or an organic material. Among them, when the material of the pixel definition layer 400 is selected as an inorganic material, on the one hand, the thickness of the pixel definition layer 400 can be appropriately reduced, reducing the overall thickness of the display panel 10, and on the other hand, it is easier to control the shape of the second opening 430 and easier to control the inclination angle of the wall surface of the pixel defining portion 410 facing the second opening 430.

[0088] In some alternative embodiments, as Figure 3 shown, a second opening 430 is further provided on the pixel defining portion 410, and the orthographic projection of the second opening 430 on the substrate 100 is located within the orthographic projection of the light-transmissive opening 520 on the substrate 100. In these embodiments, at least part of the pixel definition layer 400 on the light-transmissive conductive portion 320 can be removed to further improve the light transmittance of the display panel 10.

[0089] In some other alternative embodiments, as Figure 2 shown, the pixel definition layer 400 further includes a second protection portion 440, and the second protection portion 440 is located on the side of the light-transmissive conductive portion 320 away from the substrate 100.

[0090] In these alternative embodiments, with the second protection portion 440 provided on the light-transmissive conductive portion 320, during the etching process for preparing the isolation structure 500, the damage to the light-transmissive conductive portion 320 during this process can be improved, the yield of the light-transmissive conductive portion 320 can be increased, and the process yield of the display panel 10 can be improved.

[0091] Optionally, the second protection part 440 may be located in the pixel definition layer 400, that is, the second protection part 440 and the pixel defining part 410 may be arranged on the same layer. When preparing the pixel definition layer 400, the material on the light-transmitting conductive part 320 may be reserved to form the second protection part 440, which can simplify the manufacturing process of the display panel 10 and improve the manufacturing efficiency of the display panel 10.

[0092] Optionally, the orthographic projection of the light-transmitting conductive part 320 on the substrate 100 is located within the orthographic projection of the second protection part 440 on the substrate 100, so that the second protection part 440 can provide more comprehensive protection for the light-transmitting conductive part 320.

[0093] Optionally, the orthographic projection of the light-transmitting opening 520 on the substrate 100 is located within the orthographic projection of the second protection part 440 on the substrate 100, further improving the influence on the light-transmitting conductive part 320 when preparing the light-transmitting opening 520 in the isolation structure 500.

[0094] In some optional embodiments, the isolation structure 500 and the light-transmitting conductive part 320 may be connected to each other, so that the light-transmitting conductive part 320 has a fixed potential, better improving the problem of parasitic capacitance.

[0095] Optionally, when the light-transmitting conductive layer 300 includes the first protection part 310 and the isolation structure 500 and the light-transmitting conductive part 320 are connected to each other, the first protection part 310 and the light-transmitting conductive part 320 are arranged at intervals and insulated from each other to avoid short-circuit connection between the isolation structure 500 and the first electrode 210.

[0096] Optionally, as Figure 3 shown, a first communication hole 450 is formed in the pixel definition layer 400, and the isolation structure 500 is connected to the light-transmitting conductive part 320 through the first communication hole 450.

[0097] In these optional embodiments, by providing the first communication hole 450 on the second protection part 440, the isolation structure 500 can be connected to the light-transmitting conductive part 320 through the first communication hole 450, and the light-transmitting conductive part 320 can have a fixed potential, better improving the problem of parasitic capacitance.

[0098] Optionally, at least one first communication hole 450 is correspondingly provided for each light-transmitting conductive part 320, that is, each light-transmitting conductive part 320 is connected to the isolation structure 500 through at least one first communication hole 450, so that each light-transmitting conductive part 320 can have a fixed potential.

[0099] Optionally, the orthographic projection of the first communication hole 450 on the substrate 100 is located within the orthographic projection of the isolation structure 500 on the substrate 100, that is, the first communication hole 450 is located on the side of the isolation structure 500 facing the substrate 100, the first communication hole 450 is covered by the isolation structure 500, and the first communication hole 450, the light-transmitting opening 520, and the isolation opening 510 are arranged in a staggered manner, which can improve the influence on the light-transmitting conductive part 320 through the first communication hole 450 when preparing the light-transmitting opening 520 and the isolation opening 510.

[0100] There are various ways to set the shape of the first communication hole 450. For example, Figure 6 As shown, the first communication hole 450 can be annular around the light-transmitting opening 520, so that the isolation structure 500 on the circumferential side of the light-transmitting opening 520 can be connected to the light-transmitting conductive part 320 through the first communication hole 450, which can increase the contact area between the isolation structure 500 and the light-transmitting conductive part 320 and improve the connection yield between the isolation structure 500 and the light-transmitting conductive part 320.

[0101] In some other alternative embodiments, for example, Figure 7 As shown, at least one first communication hole 450 is arranged on at least one side of the light-transmitting opening 520. For example, a plurality of first communication holes 450 are arranged at intervals around the light-transmitting opening 520, so that the isolation structures 500 at different positions on the circumferential side of the light-transmitting opening 520 can be connected to the light-transmitting conductive part 320 through different first communication holes 450.

[0102] Optionally, as Figure 8 and Figure 9 shown, the display panel 10 includes a display area AA. The first opening 420 and the isolation opening 510 can both be located in the display area AA, and the light-emitting unit 470 emits light and displays in the display area AA. The first communication hole 450 can be located in the display area AA, and the first communication hole 450 can connect the isolation structure 500 and the light-transmitting conductive part 320 in the display area AA.

[0103] Optionally, the display panel 10 further includes a light-transmitting area, which is an area corresponding to the setting of sensors. For example, an ambient light sensor, a fingerprint sensor, a camera, etc. are arranged below the light-transmitting area. The light-transmitting opening 520 can be only located in the light-transmitting area, or the light-transmitting opening 520 can be located in the light-transmitting area and the display area AA other than the light-transmitting area. The light-transmitting area can be a part of the display area AA. In this case, the isolation opening 510 and the light-transmitting opening 520 are arranged on the isolation structure 500 in the light-transmitting area, and the light-emitting unit is arranged in the isolation opening 510, so that the light-transmitting area has a display function and a light-transmitting function.

[0104] There are many ways to set the isolation structure 500. For example, the isolation structure 500 includes a first sublayer 501 and a second sublayer 502 located on the side of the first sublayer 501 away from the substrate 100, and the orthographic projection of the first sublayer 501 on the substrate 100 is located within the orthographic projection of the second sublayer 502 on the substrate 100. The projection area of ​​the second sublayer 502 is larger than the projection area of ​​the first sublayer 501, and a concave can be formed under the second sublayer 502. When the light-emitting unit 470 is subsequently prepared, the light-emitting material can be disconnected at the edge of the second sublayer 502, so that the precision mask plate process can be omitted, which can simplify the preparation process of the display panel 10.

[0105] Optionally, as described above, when the isolation structure 500 includes the first sublayer 501 and the second sublayer 502, the first sublayer 501 is connected to the light-transmitting conductive portion 320 via the first connecting hole 450. The first sublayer 501 is closer to the light-transmitting conductive portion 320 than the second sublayer 502, and the first sublayer 501 is more easily connected to the light-transmitting conductive portion 320 via the first connecting hole 450.

[0106] The first sublayer 501 and the light-transmitting conductive part 320 may be directly connected to each other. Alternatively, in other embodiments, the isolation structure 500 further includes a third sublayer 503 located on the side of the first protection part 310 facing the substrate 100, the orthographic projection of the first sublayer 501 on the substrate 100 is located at the orthographic projection of the third sublayer 503 on the substrate 100, and the third sublayer 503 is connected to the light-transmitting conductive part 320 via the first connecting hole 450, so that the first sublayer 501 is connected to the light-transmitting conductive part 320 through the third sublayer 503.

[0107] In addition, by setting the third sublayer 503, when the first sublayer 501 is side-engraved so that the orthographic projection of the first sublayer 501 on the substrate 100 is located within the orthographic projection of the second sublayer 502 on the substrate 100, the material under the third sublayer 503 can be protected to avoid damage to the layer structure under the third sublayer 503.

[0108] In some embodiments, the display panel 10 further includes a second electrode layer 600, which includes a second electrode 610 located on a side of the light emitting unit 470 away from the substrate 100, and the second electrode 610 is connected to the isolation structure 500. Thus, a plurality of second electrodes 610 can be interconnected through the isolation structure 500 to form a surface electrode.

[0109] The second electrode 610 may be interconnected with the first sublayer 501 of the isolation structure 500. Optionally, when the isolation structure 500 includes a third sublayer 503, the second electrode 610 may also be connected to the third sublayer 503 of the isolation structure 500, or the second electrode 610 may be connected to the first sublayer 501 and the third sublayer 503 of the isolation structure 500.

[0110] Optionally, the material of the first sub-layer 501 includes a conductive material, and the second electrode 610 and the first sub-layer 501 are electrically connected to each other. Optionally, the material of the second sub-layer 502 may also include a conductive material to increase the distribution area of the conductive part in the isolation structure 500 and reduce the overall resistance of the second electrode 610. Optionally, the material of the third sub-layer 503 includes a conductive material to further increase the distribution area of the conductive part in the isolation structure 500 and reduce the overall resistance of the second electrode 610.

[0111] In some alternative embodiments, such as Figure 9 shown, the display panel 10 further includes a first power signal line 110. The first power signal line 110 is located inside the substrate 100 or on one side of the substrate 100. A second communication hole 460 is formed in the pixel defining portion 410, and the isolation structure 500 is connected to the first power signal line 110 via the second communication hole 460.

[0112] In these alternative embodiments, a second communication hole 460 is further formed in the pixel defining portion 410, so that the isolation structure 500 can be connected to the first power signal line 110 inside the substrate 100 through the second communication hole 460 to achieve the mutual transmission of signal lines.

[0113] Optionally, the first power signal line 110 may be located in the fourth conductive layer to reduce the distance between the first power signal line 110 and the isolation structure 500, facilitating the electrical connection between the first power signal line 110 and the isolation structure 500.

[0114] Optionally, both the pixel defining portion 410 and the second protection portion 440 are part of the pixel definition layer 400. The pixel defining portion 410 and the second protection portion 440 are components in different regions on the pixel definition layer 400, and there may be no obvious boundary between the pixel defining portion 410 and the second protection portion 440. The second communication hole 460 and the first communication hole 450 can be formed in the same process step to further simplify the manufacturing process of the display panel 10.

[0115] Optionally, the display panel 10 further includes a non-display area NA, and the non-display area NA surrounds at least part of the display area AA. The second communication hole 460 may be located in the non-display area NA, so that the isolation structure 500 is electrically connected to the first power signal line 110 in the non-display area NA, improving the influence of the second communication hole 460 on the structure in the display area AA.

[0116] Optionally, a dam 700 structure is further provided on the substrate 100 of the display panel 10. The dam 700 structure is disposed around the display area AA. The second communication hole 460 can be disposed on the side of the dam 700 structure facing the display area AA, so that the isolation structure 500 can be entirely located on the side of the dam 700 structure facing the display area AA, which can simplify the structure of the isolation structure 500.

[0117] Optionally, the display panel 10 further includes a packaging layer 900. The packaging layer 900 can include a first packaging layer. The first packaging layer includes a packaging portion 910 located on the side of each second electrode 610 facing away from the substrate 100. Through the packaging portion 910, sealing protection can be provided to each light-emitting unit 470. The material of the first packaging layer can be an inorganic material.

[0118] Optionally, the packaging layer 900 further includes a second packaging layer 920 located on the side of the first packaging layer facing away from the substrate 100. The second packaging layer 920 is located on the side of the dam 700 structure facing the display area AA. The dam 700 structure can prevent the material of the second packaging layer 920 from overflowing to the side of the dam 700 structure away from the display area AA. The material of the second packaging layer 920 can include an organic material.

[0119] Optionally, the second packaging layer 920 is in contact connection with at least a part of the second protection portion 440. For example, the first packaging layer 900 does not package the light-transmitting opening 520, and the first packaging layer 900 only packages the area where the isolation opening 510 is located, so that the second packaging layer 920 can be in direct contact connection with the second protection portion 440 within the light-transmitting opening 520.

[0120] Optionally, the packaging layer 900 further includes a third packaging layer 920 located on the side of the second packaging layer 920 facing away from the substrate 100. The material of the third packaging layer 920 can be the same as the material of the first packaging layer. For example, the material of the third packaging layer 920 is an inorganic material.

[0121] Optionally, the display panel 10 further includes a touch function layer 800. The touch function layer 800 is located on the side of the packaging layer 900 facing away from the substrate 100. The touch function layer 800 can include a first touch layer and a second touch layer. An insulating layer is disposed between the first touch layer and the second touch layer. Touch electrodes 810 are disposed in one of the first touch layer and the second touch layer, and bridging portions 820 are disposed in the other. The adjacent touch electrodes 810 are connected through vias using the bridging portions 820.

[0122] Optionally, at least a part of the orthographic projection of the touch electrode 810 on the substrate 100 and the orthographic projection of the light-transmitting opening 520 on the substrate 100 are at least partially overlapped. During the setting process of the touch electrode 810, a part of the touch electrode 810 is located above the light-transmitting opening 520, that is, at least a part of the orthographic projection of the touch electrode 810 on the substrate 100 and the orthographic projection of the light-transmitting opening 520 on the substrate 100 are at least partially overlapped. At this time, since the light-transmitting conductive part 320 is correspondingly arranged at the light-transmitting opening 520, the light-transmitting conductive part 320 plays a shielding role, which can improve the parasitic capacitance generated between the touch electrode 810 and other signal lines in the array substrate 100, thereby improving the stability of touch signal transmission.

[0123] In some optional embodiments, the orthographic projection of the first electrode 210 on the substrate 100 is located within the orthographic projection of the first protection part 310 on the substrate 100. The size of the first protection part 310 is larger than that of the first electrode 210, and the first protection part 310 can provide more comprehensive protection for the first electrode 210.

[0124] Optionally, the first electrode 210 includes a top surface facing away from the substrate 100 and a side surface connected to the periphery of the top surface and extending toward the substrate 100. The first protection part 310 can cover the top surface and the side surface to prevent the first electrode 210 from being damaged through the top surface or the side surface when patterning the light-transmitting conductive layer 300.

[0125] Optionally, the first protection part 310 includes a central area and an edge area. The central area is located on the side of the first protection part 310 facing away from the substrate 100, and the edge area is connected to the periphery of the central area and is in contact with the substrate 100. The size of the first protection part 310 is larger than that of the first electrode 210, and an edge area in contact with the substrate 100 extends out from the first electrode 210, so that the first protection part 310 can provide more comprehensive protection for the first electrode 210.

[0126] An embodiment of the second aspect of the present application further provides a display device, including the display panel 1010 in any of the above first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 1010 in any of the above 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 1010 in any of the above first aspect embodiments, which will not be elaborated here.

[0127] The display device in the embodiments of the present application includes, but is not limited to, devices with display functions such as mobile phones, personal digital assistants (Personal Digital Assistant, abbreviated as: PDA), tablet computers, e-books, televisions, access control systems, smart landline telephones, consoles, etc.

[0128] An embodiment of the third aspect of the present application further provides a method for manufacturing a display panel 10, where the display panel 10 may be the display panel 10 provided in any of the above first aspect embodiments, such as Figures 1 to 10 As shown, the method for manufacturing the display panel 10 may include:

[0129] Step S01: As Figure 11 shown, a first electrode 210 material layer is disposed on the substrate 100, and the first electrode 210 material layer is patterned to form a first electrode layer 200, and the first electrode layer 200 includes a plurality of first electrodes 210 disposed at intervals.

[0130] Step S02: As Figure 12 shown, a conductive functional material layer is further disposed on the substrate 100, and the conductive functional material layer is patterned to obtain a transparent conductive layer 300, and the transparent conductive layer 300 includes a transparent conductive portion 320.

[0131] Optionally, as Figure 12 shown, in step S02, the transparent conductive layer 300 may further include a first protection portion 310, and the first protection portion 310 covers at least part of the first electrode 210, so that the first protection portion 310 can provide protection to the first electrode 210.

[0132] Step S03: As Figure 13 shown, a pixel definition material layer is disposed on the substrate 100.

[0133] Step S04: As Figure 14 shown, an isolation structure 500 is fabricated on a side of the pixel definition material layer facing away from the substrate 100, and the isolation structure 500 encloses an isolation opening 510 and a light-transmitting opening 520, and at least part of a positive projection of the light-transmitting opening 520 on the substrate 100 overlaps with a positive projection of the transparent conductive portion 320 on the substrate 100.

[0134] Step S05: As Figure 15 shown, the pixel definition material layer exposed by the isolation opening 510 is patterned to obtain a first opening 420.

[0135] Optionally, when the transparent conductive layer 300 includes the first protection portion 310, at least part of the first protection portion 310 is exposed by the first opening 420. This facilitates subsequent connection of the light-emitting unit 470 to the first electrode 210 via the first protection portion 310.

[0136] In the method for manufacturing the display panel 10 provided in the embodiment of the present application, after the first electrode layer 200 is manufactured, the transparent conductive layer 300 is continuously manufactured. When patterning the conductive functional material layer, the first protection portion 310 located on the first electrode 210 is retained, thereby being able to improve the problem that the first electrode 210 is easily damaged and affected during this process. In addition, after the isolation structure 500 is manufactured, the pixel defining material layer is patterned in step S05 to obtain the first opening 420, so that the pixel defining material layer can provide protection to the transparent conductive layer 300 in step S04, improving the influence on the transparent conductive layer 300 when the isolation structure 500 is obtained by patterning, and being able to improve the process performance of the display panel 10.

[0137] In addition, the first opening 420 is used to accommodate the light-emitting unit 470. The orthographic projection of the first opening 420 on the substrate 100 and the orthographic projection of the first electrode 210 of the first electrode layer 200 on the substrate 100 at least partially overlap, so that the first electrode 210 can drive the light-emitting unit 470 in the first opening 420 to emit light. The isolation structure 500 encloses to form a light-transmitting opening 520 and an isolation opening 510. The isolation opening 510 and the first opening 420 are correspondingly arranged without affecting the light emission of the light-emitting unit 470. The light-transmitting opening 520 can improve the light transmittance of the display panel 10. The transparent conductive portion 320 and the light-transmitting opening 520 are corresponding. When manufacturing components such as the touch control electrode 810 subsequently, it can improve the parasitic capacitance generated between components such as the touch control electrode 810 and the conductive wire or circuit in the substrate 100. Therefore, by providing the first protection portion 310 and the transparent conductive portion 320 in the embodiment of the present application, not only can the problem that the first electrode 210 is easily damaged during the manufacturing process be improved, but also the problem of parasitic capacitance can be improved, and the process performance of the display panel 10 can be effectively improved.

[0138] In some optional embodiments, when patterning the pixel defining material layer in step S05, a part of the pixel defining material layer located on the side of the transparent conductive portion 320 away from the substrate 100 can be retained to form a second protection portion 440, and the second protection portion 440 can provide protection to the transparent conductive portion 320. Alternatively, in step S05, a part of the pixel defining material layer located on the transparent conductive portion 320 can also be removed to form a second opening 430, further improving the light transmittance of the display panel 10.

[0139] In some optional embodiments, such as Figure 13As shown, in step S03, the pixel defining material layer can be patterned to obtain the first via hole 450, and a part of the light-transmitting conductive portion 320 is exposed through the first via hole 450. When preparing the isolation structure 500 in the subsequent step S04, the isolation structure 500 can be connected via the first via hole 450 and the light-transmitting conductive portion 320, so that the light-transmitting conductive portion 320 can carry a fixed potential, better improving the problem of parasitic capacitance.

[0140] Optionally, the display panel 10 further includes a first power signal line 110. The first power signal line 110 is located inside the substrate 100 or on one side of the substrate 100. In step S03, when patterning the pixel defining material layer, a second via hole 460 can also be obtained, and a part of the first power signal line 110 is exposed through the second via hole 460. When preparing the isolation structure 500 in the subsequent step S04, the isolation structure 500 can be connected via the second via hole 460 and the first power signal line 110.

[0141] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, comprising: a substrate; a first electrode layer disposed on one side of the substrate, the first electrode layer including a plurality of first electrodes distributed at intervals; a light-transmissive conductive layer disposed on one side of the substrate, the light-transmissive conductive layer including a light-transmissive conductive portion; a pixel definition layer disposed on the side of the first electrode layer facing away from the substrate and covering at least part of the light-transmissive conductive portion, the pixel definition layer including a pixel defining portion and a first opening formed in the pixel defining portion; a light-emitting layer including a light-emitting unit located in the first opening; an isolation structure disposed on the side of the pixel definition layer facing away from the substrate, the isolation structure enclosing to form an isolation opening and a light-transmissive opening, at least part of the orthographic projection of the isolation opening on the substrate and at least part of the orthographic projection of the first opening on the substrate overlap, and at least part of the orthographic projection of the light-transmissive opening on the substrate and at least part of the orthographic projection of the light-transmissive conductive portion on the substrate overlap.

2. The display panel according to claim 1, characterized in that, the light-transmissive conductive layer is disposed on the side of the first electrode layer facing away from the substrate; Preferably, the light-transmissive conductive layer further includes a first protection portion covering at least part of the first electrode; Preferably, at least part of the orthographic projection of the first opening on the substrate and at least part of the orthographic projection of the first protection portion on the substrate overlap; Preferably, the first electrode includes a first sub-layer, a second sub-layer, and a third sub-layer stacked in a direction away from the substrate, and the first protection portion is located on the side of the third sub-layer facing away from the second sub-layer; Preferably, the orthographic projection of the first electrode on the substrate is located within the orthographic projection of the first protection portion on the substrate; Preferably, one first protection portion and at least one shielding portion are connected to each other to form a light-transmissive conductive portion, and the light-transmissive conductive portions are insulated from each other at intervals; or, the first protection portions and the light-transmissive conductive portions are arranged at intervals, the substrate includes a second power signal line, and the light-transmissive conductive portion is connected to the second power signal line.

3. The display panel according to claim 1, characterized in that, a second opening is formed in the pixel defining portion, and at least part of the orthographic projection of the second opening on the substrate and at least part of the orthographic projection of the light-transmissive opening on the substrate overlap; or, the display panel further includes a second protection portion located on the side of the light-transmissive conductive portion facing away from the substrate; Preferably, the orthographic projection of the light-transmissive conductive portion on the substrate is located within the orthographic projection of the second protection portion on the substrate; Preferably, the orthographic projection of the light-transmissive opening on the substrate is located within the orthographic projection of the second protection portion on the substrate; Preferably, the second protection portion and the pixel defining portion are disposed on the same layer.

4. The display panel according to claim 1, characterized in that, the isolation structure and the light-transmissive conductive portion are electrically connected to each other; Preferably, a first communication hole is formed in the pixel definition layer, and the isolation structure is connected to the light-transmissive conductive portion via the first communication hole; Preferably, at least one of the first communication holes is correspondingly provided for each of the light-transmissive conductive portions; Preferably, the first communication holes are annularly arranged around the light-transmissive opening; alternatively, at least one of the first communication holes is provided on at least one side of the light-transmissive opening; Preferably, the first communication holes are located in the display area of the display panel; Preferably, the isolation structure includes a first sub-layer and a second sub-layer located on a side of the first sub-layer away from the substrate. The orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the second sub-layer on the substrate, and the first sub-layer is connected to the light-transmissive conductive portion through the first communication hole; Preferably, the isolation structure further includes a third sub-layer located on a side of the first sub-layer facing the substrate. The orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate, and the third sub-layer is connected to the light-transmissive conductive portion through the first communication hole, so that the first sub-layer is connected to the light-transmissive conductive portion through the third sub-layer; Preferably, the display panel further includes a second electrode layer, and the second electrode layer includes a second electrode located on a side of the light-emitting unit away from the substrate, and the second electrode is connected to the isolation structure; Preferably, the second electrode is connected to the first sub-layer; Preferably, the second electrode is connected to the third sub-layer.

5. The display panel according to claim 1, wherein, the display panel further includes a first power signal line, the first power signal line is located inside the substrate or on one side of the substrate, a second communication hole is formed in the pixel defining portion, and the isolation structure is connected to the first power signal line through the second communication hole; Preferably, the second communication hole is located in the non-display area of the display panel; Preferably, at least a part of the first power signal line is located in the non-display area of the display panel; Preferably, a dam structure located in the non-display area of the display panel is further provided on the substrate. The dam structure is arranged around the display area of the display panel, and the second communication hole is located on a side of the dam structure facing the display area.

6. A display device, wherein, it includes the display panel according to any one of claims 1-5.

7. A method for manufacturing a display panel, wherein, it includes: providing a first electrode material layer on a substrate, and performing a patterning process on the first electrode material layer to form a first electrode layer, and the first electrode layer includes a plurality of first electrodes arranged at intervals; continuing to provide a conductive functional material layer on the substrate, and performing a patterning process on the conductive functional material layer to obtain a light-transmissive conductive layer, and the light-transmissive conductive layer includes a light-transmissive conductive portion; providing a pixel definition material layer on the substrate; fabricating an isolation structure on a side of the pixel definition material layer away from the substrate, the isolation structure encloses a separation opening and a light-transmissive opening, and at least a part of the orthographic projection of the light-transmissive opening on the substrate overlaps with the orthographic projection of the light-transmissive conductive portion on the substrate; Patterning the pixel defining material layer exposed by the isolation opening to obtain a first opening.

8. The method according to claim 7, wherein, in the step of patterning the pixel defining material layer exposed by the isolation opening to obtain a first opening, a part of the pixel defining material layer located on the side of the light-transmissive conductive part away from the substrate is retained to form a second protection part, or a part of the pixel defining material layer located on the side of the light-transmissive conductive part away from the substrate is removed to form a second opening.

9. The method according to claim 7, wherein, in the step of disposing a pixel defining material layer on the substrate, patterning the pixel defining material layer to obtain a first communication hole, and a part of the light-transmissive conductive part is exposed by the first communication hole; in the step of preparing an isolation structure on the side of the pixel defining material layer away from the substrate, the isolation structure is connected via the first communication hole and the light-transmissive conductive part; Preferably, the display panel further includes a first power signal line, the first power signal line is located inside the substrate or on one side of the substrate, and in the step of disposing a pixel defining material layer on the substrate, patterning the pixel defining material layer further obtains a second communication hole, and the first power signal line is exposed by the second communication hole, in the step of preparing an isolation structure on the side of the pixel defining material layer away from the substrate, the isolation structure is connected via the second communication hole and the first power signal line.

10. The method according to claim 7, wherein, in the step of continuously disposing a conductive functional material layer on the substrate and patterning the conductive functional material layer to obtain a light-transmissive conductive layer, the light-transmissive conductive layer further includes a first protection part spaced apart from the light-transmissive conductive part, and the first protection part covers at least a part of the first electrode; in the step of patterning the pixel defining material layer exposed by the isolation opening to obtain a first opening: at least a part of the first protection part is exposed by the first opening.

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