Display panel, display device and preparation method of display panel

Abstract

The application relates to a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, a partition structure and a plurality of light-emitting functional parts arranged on one side of the substrate, the partition structure is provided with a plurality of partition openings, and at least part of the light-emitting functional parts is arranged in the corresponding partition openings. The partition structure comprises a first partition wall between two adjacent partition openings, the first partition wall comprises a first extension section, a second extension section and a third extension section connected in sequence, the second extension section comprises a first end and a second end in the direction from one of the two adjacent partition openings to the other, the first extension section is connected with the first end, the third extension section is connected with the second end, and the end of the first extension section away from the substrate and the end of the third extension section away from the substrate are both arranged in a direction away from the center of the first partition wall. Therefore, the display panel, the display device and the preparation method of the display panel provided by the application aim to reduce the transverse electric leakage between two adjacent light-emitting functional parts.

Description

Display panel, display device, and method for manufacturing display panel Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] OLED (Organic Light Emitting Diode) display panels have many advantages, such as being all-solid-state, actively emitting light, having a fast response time, high contrast, no viewing angle limitations, and being able to achieve flexible displays. They are a new type of display technology that was developed in the mid-20th century and are widely used in people's daily production and life.

[0003] In related technologies, a stacked OLED may include a substrate, a first light-emitting layer, a charge generation layer (CGL) and a second light-emitting layer sequentially stacked on the substrate. The first light-emitting layer includes a plurality of first sub-light-emitting units, the second light-emitting layer includes a plurality of second sub-light-emitting units, the first sub-light-emitting units and the second sub-light-emitting units are correspondingly disposed, and the charge generation layer connects the first sub-light-emitting units and the corresponding second sub-light-emitting units in series.

[0004] However, the lateral leakage of the charge generation layer in stacked OLEDs is quite severe. Summary of the Invention

[0005] Therefore, it is necessary to provide a display panel, a display device, and a method for manufacturing the display panel, with the aim of reducing lateral leakage current between two adjacent light-emitting functional parts.

[0006] In a first aspect, embodiments of this application provide a display panel, including a substrate, a partition structure, and a plurality of light-emitting functional parts. The plurality of light-emitting functional parts are all disposed on one side of the substrate. The partition structure has a plurality of partition openings, and the plurality of light-emitting functional parts and the plurality of partition openings are correspondingly disposed, with at least a portion of the light-emitting functional parts disposed within the corresponding partition openings. The partition structure includes a first partition wall located between two adjacent partition openings. The first partition wall includes a first extension segment, a second extension segment, and a third extension segment connected sequentially. The second extension segment includes a first end and a second end located in the direction from one of the two adjacent partition openings to the other. The first extension segment is connected to the first end, and the third extension segment is connected to the second end. The end of the first extension segment facing away from the substrate is inclined in a direction away from the third extension segment relative to the end near the substrate. The end of the third extension segment facing away from the substrate is also inclined in a direction away from the first extension segment relative to the end near the substrate.

[0007] The display panel provided in this application embodiment has a partition structure, which is used to isolate two adjacent light-emitting functional parts, thereby preventing lateral leakage between the two adjacent light-emitting functional parts.

[0008] Secondly, embodiments of this application provide a display device, including the display panel of the first aspect.

[0009] Thirdly, embodiments of this application provide a method for manufacturing a display panel, comprising:

[0010] Provide substrate;

[0011] A partition structure is formed on one side of the substrate; the partition structure has multiple partition openings;

[0012] Multiple light-emitting functional parts are formed on one side of the substrate; the multiple light-emitting functional parts and multiple partition openings are correspondingly arranged, and at least a portion of the light-emitting functional parts are disposed in the corresponding partition openings; the partition structure includes a first partition wall located between two adjacent partition openings, the first partition wall includes a first extension section, a second extension section and a third extension section connected in sequence, the second extension section includes a first end and a second end located in the direction from one of the two adjacent partition openings to the other, the first extension section and the first end are connected, the third extension section and the second end are connected, the end of the first extension section away from the substrate is inclined in a direction away from the third extension section relative to the end near the substrate, and the end of the third extension section away from the substrate is inclined in a direction away from the first extension section relative to the end near the substrate.

[0013] The method for manufacturing a display panel provided in this application provides a method for preventing lateral leakage between adjacent light-emitting functional parts by manufacturing a partition structure. Attached Figure Description

[0014] Figure 1 is a cross-sectional view of the display panel provided in an embodiment of this application.

[0015] Figure 2 is a partial enlarged structural diagram of Figure 1.

[0016] Figure 3 is a top view of the partition structure and the second electrode provided in the embodiment of this application.

[0017] Figure 4 is a partial enlarged structural diagram of 3.

[0018] Figure 5 is a schematic diagram of the structure after the formation of the conductive material layer provided in the embodiment of this application.

[0019] Figure 6 is a schematic diagram of the structure after forming the second electrode and the auxiliary electrode according to an embodiment of this application.

[0020] Figure 7 is a schematic diagram of the structure after the first opening is formed according to an embodiment of this application.

[0021] Figure 8 is a schematic diagram of the structure after the partition material layer is formed according to an embodiment of this application.

[0022] Figure 9 is a schematic diagram of the structure after the partition structure is formed according to the embodiment of this application.

[0023] Figure 10 is a schematic diagram of the structure after the mask layer is formed according to an embodiment of this application.

[0024] Figure 11 is a schematic diagram of the structure after removing all pixel-limiting material layers according to an embodiment of this application.

[0025] Figure 12 is a schematic diagram of the structure for forming a photoresist material layer provided in an embodiment of this application.

[0026] Figure 13 is a schematic diagram of the structure after forming the pixel opening and the second gap according to an embodiment of this application.

[0027] Figure 14 is a schematic diagram of the structure after the formation of the first electrode according to an embodiment of this application.

[0028] Figure 15 is a flowchart illustrating the method for preparing a display panel according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Display panel; 111. Substrate; 112. Insulating layer; 113. Semiconductor layer; 114. Conductive layer; 120. Partition structure; 120a. Partition material layer; 121. First partition wall; 1211. First extension section; 1212. Second extension section; 1213. Third extension section; 122. Second partition wall; 123. Partition opening; 1231. First sidewall; 1241. First sub-sidewall; 1242. Second sub-sidewall; 125. Groove; 1261. First surface; 131. First gap; 132. Second gap; 133. Accommodating space; 140. Auxiliary electrode; 142. Second surface; 150. Light-emitting unit; 151. First electrode; 1511. First sub-electrode; 15 11d, Fourth extension segment; 1511e, Fifth extension segment; 1512, Second sub-electrode; 1513, Third sub-electrode; 152, Second electrode; 153, Light-emitting functional part; 160, Filler; 170, Pixel defining part; 171, Pixel opening; 172, Pixel defining material layer; 1721, First opening; 172a, Pixel defining material part; 174, Fourth sub-part; 175, Fifth sub-part; 176, Sixth sub-part; 180, Photoresist material layer; 180a, Photoresist material part; 181, First sub-part; 182, Second sub-part; 183, Third sub-part; 191, Mask layer; 192, Conductive material layer; M1, First conductive layer; M2, Second conductive layer; M3, Third conductive layer. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0034] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0035] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0036] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0037] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0038] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0039] As described in the background section, in related technologies, a tandem OLED may include a substrate, a first light-emitting layer, a charge generation layer (CGL), and a second light-emitting layer sequentially stacked on the substrate. The first light-emitting layer includes a plurality of first sub-light-emitting units, and the second light-emitting layer includes a plurality of second sub-light-emitting units. The first and second sub-light-emitting units are correspondingly disposed, and the charge generation layer connects the first sub-light-emitting units and their corresponding second sub-light-emitting units in series. The first sub-light-emitting units and their corresponding second sub-light-emitting units together form a sub-light-emitting unit group.

[0040] However, the charge generation layer is a whole-surface structure, and the charge generation layers of each sub-light-emitting unit group are connected, resulting in a relatively serious lateral leakage between the charge generation layers of two adjacent sub-light-emitting unit groups.

[0041] Based on the above-mentioned technical problems, the inventors discovered that by setting up a partition structure to isolate two adjacent light-emitting functional parts, lateral leakage between two adjacent light-emitting functional parts can be prevented.

[0042] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] The following description, in conjunction with Figures 1-15, illustrates the display panel, display device, and method for manufacturing the display panel provided in the embodiments of this application.

[0044] Referring to Figure 1, this embodiment of the application provides a display panel 100, which may include a substrate 111. The substrate 111 can provide support for subsequent film layers. The thickness direction of the substrate 111 is the Z direction.

[0045] Referring to Figure 1, the display panel 100 includes a partition structure 120 and a plurality of light-emitting functional parts 153. Both the partition structure 120 and the light-emitting functional parts 153 are disposed on one side of the substrate 111 in the thickness direction. The partition structure 120 has a plurality of partition openings 123. For example, the partition structure 120 can be mesh-like (Figure 4). The plurality of light-emitting functional parts 153 and the plurality of partition openings 123 are correspondingly arranged, and at least a portion of the light-emitting functional parts 153 is disposed within the corresponding partition opening 123.

[0046] In this embodiment, the correspondence between 'a' and 'b' can mean that one 'a' corresponds to at least one 'b', or that one 'b' corresponds to at least one 'a'. This embodiment uses the example of one 'a' corresponding to one 'b'. For example, the correspondence between the partition opening 123 and the light-emitting functional part 153 can mean that one partition opening 123 corresponds to at least one light-emitting functional part 153, or that one light-emitting functional part 153 corresponds to at least one partition opening 123.

[0047] The partition structure 120 provided in the embodiments of this application will be described below.

[0048] Referring to Figures 1 and 3, the partition structure 120 includes a first partition wall 121 located between two adjacent partition openings 123. The first partition wall 121 includes a first extension 1211, a second extension 1212, and a third extension 1213. The first extension 1211 is located on the side of the second extension 1212 that is closer to one partition opening 123, and the third extension 1213 is located on the side of the second extension 1212 that is closer to the other partition opening 123. The first extension 1211 and the second extension 1212 are arranged along the direction from one of the two adjacent partition openings 123 to the other. The end of the first extension segment 1211 near the substrate 111 is connected to one end of the second extension segment 1212. The end of the first extension segment 1211 away from the substrate 111 is inclined away from the end near the substrate 111 in a direction away from the third extension segment 1213. The end of the third extension segment 1213 near the substrate 111 is connected to the other end of the second extension segment 1212. The end of the third extension segment 1213 away from the substrate 111 is inclined away from the end near the substrate 111 in a direction away from the first extension segment 1211. In this way, the partition structure 120 forms an undercut structure that is larger at the top and smaller at the bottom. During the formation of the light-emitting functional part 153, the partition structure 120 can separate the light-emitting functional parts 153 in two adjacent partition openings 123, thereby preventing lateral leakage between two adjacent light-emitting functional parts 153 from causing light leakage.

[0049] In some embodiments, referring to Figures 1 and 3, the partition structure 120 includes a second partition 122 located between two adjacent first partitions 121. The first partitions 121 enclose a groove 125. A first extension 1211, a second extension 1212, and the first extension 1211 together enclose the groove 125. The second extension 1212 is located at the bottom of the groove 125, and the first extension 1211 and the third extension 1213 are located on the sides of the groove 125. The grooves 125 of the two adjacent first partitions 121 are connected through the second partition 122. The second partition 122 is located close to the bottom of the groove 125. The extension direction of the second partition 122 and the extension direction of the second extension 1212 can be the same, making the shape of the second partition 122 relatively simple.

[0050] In some embodiments, referring to FIG2, the sidewall of the partition structure 120 near the partition opening 123 can be a first sidewall 1231, which is also the sidewall of the partition opening 123. The first sidewall 1231 may include a connected first sub-sidewall 1241 and a second sub-sidewall 1242. The first sub-sidewall 1241 is disposed between the second sub-sidewall 1242 and the substrate 111, and the first sub-sidewall 1241 is disposed closer to the substrate 111 than the second sub-sidewall 1242. In the corresponding light-emitting functional part 153 and the partition opening 123, the light-emitting functional part 153 is in contact with the first sub-sidewall 1241. In this way, it is possible to prevent the existence of holes between the light-emitting functional part 153 and the first sub-sidewall 1241, and to prevent holes from interfering with the propagation and reflection of light and affecting the display effect of the display panel 100. There is a first gap 131 between the light-emitting functional part 153 and the second sub-side wall 1242. By setting the first gap 131, the light-emitting functional part 153 and the side of the partition structure 120 facing away from the substrate 111 are spaced apart, and two adjacent light-emitting functional parts 153 are separated by the first gap 131.

[0051] In some embodiments, the display panel 100 includes a filler 160 disposed on the side of the partition structure 120 away from the substrate 111. The filler 160 is at least partially located in the groove 125. Since there is a first gap 131 between the light-emitting functional part 153 and the second sub-sidewall 1242, there is a gap between the filler 160 and the light-emitting functional part 153, and the filler 160 and the light-emitting functional part 153 do not directly contact each other. For example, when forming the light-emitting functional part 153, a light-emitting functional material layer can be formed. Since the partition structure 120 is an undercut structure, the light-emitting functional material layer located in the partition opening 123 and the light-emitting functional material layer located on the side of the partition structure 120 away from the substrate 111 can be separated. The light-emitting functional material layer located in the partition opening 123 forms the light-emitting functional part 153, and the light-emitting functional material layer located on the side of the partition structure 120 away from the substrate 111 forms the filler 160. This allows two adjacent light-emitting functional parts 153 to be separated. At this time, the filler 160 and the light-emitting functional part 153 are disposed in the same layer and with the same material, so that the light-emitting functional part 153 and the filler 160 can be prepared simultaneously. This simplifies the preparation process of the filler 160 and the light-emitting functional part 153 and reduces the preparation cost.

[0052] For example, the partition structure 120 is made of a conductive material, and the partition structure 120 is a conductive component. The material of the partition structure 120 may include metals such as titanium, silver, copper, aluminum, and molybdenum, or alloys, or conductive oxides, such as any one or more of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), zinc gallium oxide, titanium tantalum oxide, tin oxide, cadmium oxide, and indium oxide. In other examples, the partition structure 120 may be made of an insulating material. This application embodiment uses the example of the partition structure 120 being made of a conductive material for illustration.

[0053] The first electrode 151 provided in the embodiments of this application will be described below.

[0054] In some embodiments, referring to FIG2, the display panel 100 includes a first electrode 151, which includes a first sub-electrode 1511 and a plurality of second sub-electrodes 1512. The first sub-electrode 1511 is connected to each of the second sub-electrodes 1512. The first sub-electrode 1511 is disposed on the side of the partition structure 120 away from the substrate 111. Some of the first sub-electrodes 1511 may be disposed on the side of the filler 160 away from the substrate 111, and some of the first sub-electrodes 1511 may be disposed on the sidewall of the filler 160. The plurality of second sub-electrodes 1512 are correspondingly disposed with a plurality of light-emitting functional parts 153. The second sub-electrodes 1512 are disposed on the side of the corresponding light-emitting functional part 153 away from the substrate 111. Thus, by connecting the first sub-electrode 1511 to each of the second sub-electrodes 1512, the first electrode 151 is a full-surface electrode, so as to facilitate power supply to the first electrode 151.

[0055] In some embodiments, referring to FIG2, the first electrode 151 includes a plurality of third sub-electrodes 1513. The third sub-electrodes 1513 are disposed on the side of the first sub-electrode 1511 facing the substrate 111, and are connected to the first sub-electrode 1511. By setting the third sub-electrodes 1513, it is beneficial to reduce the resistance of the first electrode 151, thereby reducing the voltage drop of the first electrode 151, improving the potential uniformity of the first electrode 151, and thus improving the display effect of the display panel 100. The third sub-electrodes 1513 and the first gap 131 can be correspondingly arranged. The third sub-electrodes 1513 are disposed in the corresponding first gap 131, and are in contact with the corresponding second sub-sidewall 1242. This helps to prevent the formation of holes between the third sub-electrodes 1513 and the second sub-sidewall 1242, and can prevent holes from interfering with the propagation and reflection of light and affecting the display effect of the display panel 100.

[0056] In an embodiment where the partition structure 120 is a conductive element, the third sub-electrode 1513 contacts the corresponding second sub-sidewall 1242, so that the third sub-electrode 1513 can electrically connect the first electrode 151 and the partition structure 120 together, and the partition structure 120 can provide power voltage to the first electrode 151, thereby optimizing the wiring layout of the display panel 100.

[0057] In some embodiments, referring to FIG2, the first sub-electrode 1511 includes a fourth extension segment 1511d and a fifth extension segment 1511e with different extending directions. The fifth extension segment 1511e and the second sub-electrode 1512 are connected through the fourth extension segment 1511d, which is located between the fifth extension segment 1511e and the second sub-electrode 1512. The end of the third sub-electrode 1513 facing away from the substrate 111 is connected to the end of the fourth extension segment 1511d facing the substrate 111. The fourth extension segment 1511d, the fifth extension segment 1511e, and the third sub-electrode 1513 together form an inverted U-shaped cover structure. The cover structure covers the end of the partition structure 120 away from the substrate 111. Since the first extension segment 1211 and the third extension segment 1213 are inclined, the cover structure and the partition structure 120 are mutually constrained along the thickness direction of the substrate 111 and are not easy to separate, which can improve the connection stability between the first electrode 151 and the partition structure 120.

[0058] In some embodiments, referring to FIG2, the fourth extension 1511d, the fifth extension 1511e, and the partition structure 120 together enclose a receiving space 133. The filler 160 is disposed in the receiving space 133 and is enclosed in the receiving space 133, so that the filler 160 is completely isolated from the light-emitting functional part 153, which helps to prevent the light-emitting functional part 153 from contacting the filler 160 and causing lateral leakage. The fourth extension 1511d covers the sidewall of the filler 160, and the fifth extension 1511e is located on the side of the filler 160 away from the substrate 111.

[0059] In some embodiments, referring to FIG2, the thickness of the second sub-electrode 1512 is H, the dimension of the sidewall of the partition structure 120 near the partition opening 123 (i.e. the first sidewall 1231) along the thickness direction of the substrate 111 is C, and the thickness of the light-emitting functional part 153 is G. H, G and C satisfy the following formula: C≤G+H. In this way, the dimension of the first sidewall 1231 along the thickness direction of the substrate 111 can be prevented from being too large, and the step difference between the first extension segment 1211 and the third extension segment 1213 and the first surface 1261 can be prevented from being too large, which is beneficial to prevent the first electrode 151 from breaking due to the excessive step difference.

[0060] In some embodiments, the display panel 100 includes a plurality of pixel defining portions 170, with adjacent pixel defining portions 170 spaced apart. The plurality of pixel defining portions 170 and a plurality of partition openings 123 are correspondingly provided, at least a portion of the pixel defining portion 170 is disposed in the corresponding partition opening 123, and a second gap 132 is provided between the pixel defining portion 170 and the side wall (i.e., the first side wall 1231) of the partition structure 120 near the partition opening 123, at least a portion of the second gap 132 may be located between the first sub-side wall 1241 and the side wall of the pixel defining portion 170.

[0061] Referring to Figures 1 and 2, the pixel limiting portion 170 is provided with a pixel opening 171. The light-emitting functional portion 153 is located in the corresponding pixel opening 171, on the side of the corresponding pixel limiting portion 170 away from the substrate 111, and in the corresponding second gap 132. By extending the light-emitting functional portion 153 into the second gap 132, it is beneficial to reduce the depth of the first gap 131 along the direction from the end of the first sidewall 1231 close to the substrate 111 to the end away from the substrate 111. This makes it easier for the third sub-electrode 1513 to fill the first gap 131 (when the depth of the first gap 131 is too deep, the third sub-electrode 1513 is not easy to reach the bottom of the first gap 131). This helps to prevent the formation of a hole between the end of the third sub-electrode 1513 facing the substrate 111 and the light-emitting functional portion 153. This can prevent the hole from interfering with the propagation and reflection of light and affecting the display effect of the display panel 100.

[0062] In some embodiments, referring to FIG2, the dimension of the first sidewall 1231 along the direction from one end near the substrate 111 to the end away from the substrate 111 is A, the dimension of the first sidewall 1231 along the thickness direction of the substrate 111 is C, and the distance (e.g., the maximum distance) between the pixel limiting portion 170 and the corresponding first sidewall 1231 is E. A, C, and E satisfy the following formula: E 2 ≥A 2 -C 2 Among them, A 2 -C 2 It is equal to the square of the dimension of the orthographic projection of the first sidewall 1231 onto the substrate 111 along the direction from the first extension 1211 to the third extension 1213, i.e., A 2 -C 2 =D 2 This can prevent the size of the second gap 132 from being too small along the direction from the first extension 1211 to the third extension 1213, which would cause the first gap 131 between the light-emitting functional part 153 and the second sub-sidewall 1242 to be filled by the light-emitting functional part 153. This is beneficial for exposing the second sub-sidewall 1242 outside the light-emitting functional part 153 and making contact with the third sub-electrode 1513.

[0063] Among them, the smaller the distance E, the closer the light-emitting functional part 153 is to the second sub-side wall 1242, the smaller the size of the first gap 131 along the direction from the first extension 1211 to the third extension 1213, and the more difficult it is for the third sub-electrode 1513 to enter the first gap 131.

[0064] In some embodiments, referring to FIG2, the thickness of the light-emitting functional part 153 is G, and the dimension of the sidewall of the partition structure 120 near the partition opening 123 along the thickness direction of the substrate 111 is C, wherein C and G satisfy the following formula: G≤C. In this way, it is advantageous that the light-emitting functional part 153 cannot contact all of the first sidewall 1231, that is, it is advantageous that the light-emitting functional part 153 contacts the first sub-sidewall 1241 but not the second sub-sidewall 1242, and it is advantageous that the second sub-sidewall 1242 is exposed outside the light-emitting functional part 153 and contacts the third sub-electrode 1513, that is, it is advantageous to form the first gap 131.

[0065] In some embodiments, referring to FIG2, the display panel 100 includes an auxiliary electrode 140, which is disposed between the partition structure 120 and the substrate 111, and is connected to the partition structure 120. The partition structure 120 is a conductive element. By providing the auxiliary electrode 140, it is beneficial to reduce the resistance of the first electrode 151, thereby reducing the voltage drop of the first electrode 151, improving the potential uniformity of the first electrode 151, and thus improving the display effect of the display panel 100. The shape of the orthographic projection of the auxiliary electrode 140 on the substrate 111 is approximately the same as the shape of the orthographic projection of the partition structure 120 on the substrate 111, and the auxiliary electrode 140 can be grid-shaped.

[0066] In some embodiments, referring to FIG1, the display panel 100 includes a plurality of second electrodes 152, which are correspondingly disposed with a plurality of light-emitting functional parts 153. The second electrodes 152 are disposed between the corresponding light-emitting functional parts 153 and the substrate 111. The second electrodes 152, the light-emitting functional parts 153, and the first electrodes 151 are stacked together along the direction away from the substrate to form a light-emitting unit 150. There can be a plurality of light-emitting units 150, which are arranged in a direction parallel to the substrate 111. Since the first electrode 151 is a full-surface electrode, the first electrodes 151 of two adjacent light-emitting units 150 are connected. There is a gap between the second electrodes 152 of two adjacent light-emitting units 150, and there is a gap between the light-emitting functional parts 153 of two adjacent light-emitting units 150.

[0067] For example, the pixel opening 171 exposes the corresponding second electrode 152, and the pixel limiting portion 170 covers the edge of the second electrode 152, which helps to protect the second electrode 152.

[0068] For example, the pixel defining portion 170 covers the edge of the auxiliary electrode 140, thereby protecting the auxiliary electrode 140.

[0069] For example, the plurality of light-emitting units 150 includes, but is not limited to, red light-emitting units, green light-emitting units, and blue light-emitting units. In other examples, the plurality of light-emitting units 150 may also include white light-emitting units.

[0070] In some embodiments, the second electrode 152 and the auxiliary electrode 140 are disposed in the same layer and made of the same material. In this way, the second electrode 152 and the auxiliary electrode 140 can be fabricated simultaneously, thereby simplifying the fabrication process of the second electrode 152 and the auxiliary electrode 140 and reducing the fabrication cost.

[0071] It should be noted that "same layer, same material" in the embodiments of this application refers to forming a base film layer from the same material, and then, after patterning and / or other processing of the base film layer, forming various structural film layers from different parts of the base film layer. The processing processes for the different structural film layers can be the same or different, and the different structural film layers can have the same or different thicknesses, and can also be on the same horizontal plane or different horizontal planes.

[0072] In some embodiments, referring to FIG2, the side of the partition structure 120 facing the substrate 111 is the first surface 1261, and the side of the auxiliary electrode 140 facing the substrate 111 is the second surface 142. The orthographic projection of the first surface 1261 on the substrate 111 lies within the orthographic projection of the second surface 142 on the substrate 111, and / or, the orthographic projection of the first surface 1261 on the substrate 111 lies within the orthographic projection of the side of the auxiliary electrode 140 away from the substrate 111 on the substrate 111. In this way, the auxiliary electrode 140 provides better support for the partition structure 120, which is beneficial to increasing the contact area between the partition structure 120 and the auxiliary electrode 140 and reducing the contact resistance between the partition structure 120 and the auxiliary electrode 140.

[0073] For example, one of the first electrode layer 151 and the second electrode layer 152 can be an anode, and the other of the first electrode layer 151 and the second electrode layer 152 can be a cathode. This application embodiment is illustrated using the example of the first electrode layer 151 being a cathode and the second electrode layer 152 being an anode.

[0074] For example, the first electrode 151 can be electrically connected to a first power line. The second electrode 152 can be electrically connected to a pixel circuit, and the pixel circuit can be electrically connected to a second power line. One of the first power line and the second power line is used to transmit a high voltage, and the other is used to transmit a low voltage. This embodiment of the application is described using the example of the first power line being used to transmit a low voltage and the second power line being used to transmit a high voltage.

[0075] For example, the light-emitting functional unit 153 may include a light-emitting material, and the light-emitting functional unit 153 may also include one or more of the following: a charge generation layer, a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole block layer (HBL), and an electron block layer (EBL).

[0076] The following describes the display device provided in the embodiments of this application.

[0077] This application provides a display device that includes the display panel 100 in any of the above embodiments. Therefore, this display device also possesses the beneficial effects of the display panel 100 in the above embodiments. The similarities can be understood by referring to the above explanation of the display panel 100, and will not be repeated here.

[0078] For example, the display device can be a mobile phone or any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc. The embodiments of this application do not make any special limitations on this.

[0079] In some embodiments, the display panel 100 may include an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a micro organic light-emitting diode (Micro OLED) display panel, etc. This application uses an OLED display panel as an example for illustration.

[0080] The array layer provided in the embodiments of this application will be described below.

[0081] Referring to Figure 1, the display panel 100 may include an array layer disposed between the substrate 111 and the second electrode 152. The array layer may include a semiconductor layer 113 and multiple conductive layers 114. The multiple conductive layers may include a first conductive layer M1, a second conductive layer M2, and a third conductive layer M3. The semiconductor layer 113, the first conductive layer M1, the second conductive layer M2, and the third conductive layer M3 are stacked in a direction away from the substrate 111. An insulating layer 112 is disposed between adjacent layers of the semiconductor layer 113, the first conductive layer M1, the second conductive layer M2, and the third conductive layer M3. An insulating layer 112 is disposed between the third conductive layer M3 and the second electrode 152.

[0082] For example, the array layer includes pixel circuits that are electrically connected to the light-emitting unit 150. The pixel circuits include transistors and capacitors. The semiconductor layer 113 includes an active layer for the transistors. The first conductive layer M1 may include at least one of a capacitor plate or a transistor gate. The second conductive layer M2 may include the source and drain of the transistor. One of the source and drain of the transistor is connected to the second electrode 152 through a third conductive layer M3.

[0083] The following describes the manufacturing method of the display panel 100 provided in the embodiments of this application.

[0084] This application provides a method for manufacturing a display panel 100, which is used to manufacture the display panel 100 described in the above embodiments. Referring to Figure 15, the manufacturing method may include:

[0085] S100: Provides a substrate.

[0086] Referring to Figure 5, a substrate 111 is provided, which can provide support for the remaining film layers to be applied subsequently.

[0087] S200: A partition structure is formed on one side of the substrate; the partition structure has multiple partition openings.

[0088] Referring to Figure 9, after providing the substrate 111, a partition structure 120 may be formed on one side of the substrate 111, and the partition structure 120 is provided with a plurality of partition openings 123.

[0089] S300: A plurality of light-emitting functional parts are formed on one side of the substrate; the plurality of light-emitting functional parts and a plurality of partition openings are correspondingly disposed, and at least a portion of the light-emitting functional parts are disposed in the corresponding partition openings; wherein, the partition structure includes a first partition wall located between two adjacent partition openings, the first partition wall includes a first extension section, a second extension section and a third extension section, the first extension section is located on the side of the second extension section near one partition opening, and the third extension section is located on the side of the second extension section near another partition opening; the end of the first extension section near the substrate is connected to the second extension section, and the end of the first extension section away from the substrate is inclined in a direction away from the end near the substrate relative to the end near the substrate, the end of the third extension section near the substrate is connected to the second extension section, and the end of the third extension section away from the substrate is inclined in a direction away from the end near the substrate relative to the end near the substrate relative to the first extension section.

[0090] Referring to Figure 14, after forming the partition structure 120 on one side of the substrate 111, a plurality of light-emitting functional parts 153 may be formed on one side of the substrate 111. The plurality of light-emitting functional parts 153 and a plurality of partition openings 123 are correspondingly disposed, with at least a portion of the light-emitting functional parts 153 disposed within the corresponding partition opening 123. The partition structure 120 includes a first partition wall 121 located between two adjacent partition openings 123. The first partition wall 121 includes a first extension 1211, a second extension 1212, and a third extension 1213. The first extension 1211 is located on the side of the second extension 1212 closest to a partition opening 123, and the third extension 1213 is located on the side of the second extension 1212 closest to a partition opening 123. On one side of the other partition opening 123: the end of the first extension segment 1211 near the substrate 111 is connected to the second extension segment 1212. The end of the first extension segment 1211 away from the substrate 111 is inclined away from the end near the substrate 111 in a direction away from the third extension segment 1213. The end of the third extension segment 1213 near the substrate 111 is connected to the second extension segment 1212. The end of the third extension segment 1213 away from the substrate 111 is inclined away from the end near the substrate 111 in a direction away from the first extension segment 1211. In this way, the partition structure 120 forms an undercut structure that is larger at the top and smaller at the bottom. During the formation of the light-emitting functional part 153, the partition structure 120 can separate the light-emitting functional parts 153 in two adjacent partition openings 123, thereby preventing lateral leakage between two adjacent light-emitting functional parts 153 and causing stealth lighting.

[0091] In some embodiments, referring to FIG7, after providing the substrate 111 and before forming the partition structure 120 on one side of the substrate 111, a pixel defining material layer 172 may be formed on one side of the substrate 111, and then a first opening 1721 may be formed on the pixel defining material layer 172. Referring to FIGS. 8 and 9, forming the partition structure 120 on one side of the substrate 111 may include forming a partition material layer 120a on the side of the pixel defining material layer 172 facing away from the substrate 111 and in the first opening 1721, and then removing the partition material layer 120a located outside the first opening 1721, retaining the partition material layer 120a located inside the first opening 1721, and forming the partition structure 120. The partition material layer 120a located on the sidewall of the first opening 1721 forms a first extension 1211 and a third extension 1213, and the partition material layer 120a located at the bottom of the first opening 1721 forms a second extension 1212. By adjusting the tilt angle of the sidewall of the first opening 1721, the tilt angles of the first extension 1211 and the third extension 1213 can be adjusted. This method of adjusting the tilt angle is simple and feasible.

[0092] In some embodiments, referring to Figures 11, 12, and 13, after forming the partition structure 120 on one side of the substrate 111 and before forming a plurality of light-emitting functional parts 153 on one side of the substrate 111, the process may include removing the pixel defining material layer 172, and then forming a photoresist material layer 180 on one side of the substrate 111. The photoresist material layer 180 includes a plurality of photoresist material parts 180a, which are correspondingly disposed with a plurality of partition openings 123. The photoresist material parts 180a are disposed in the corresponding partition openings 123. The photoresist material parts 180a include a first sub-part 181, a second sub-part 182, and a third sub-part 183. The second sub-part 182 is disposed on the outer periphery of the first sub-part 181, and the third sub-part 183 is disposed on the outer periphery of the second sub-part 182. The first sub-part 181, the second sub-part 182, and the third sub-part 183 are arranged sequentially from the center to the edge of the photoresist material parts 180a. Next, the photoresist material layer 180 is exposed. Then, the first sub-part 181 is removed by development to form a pixel opening 171, the third sub-part 183 is removed by development to form a second gap 132, and the second sub-part 182 is retained to form a pixel limiting part 170.

[0093] For example, the photoresist material layer 180 can be a positive photoresist. After exposure, the exposed portion of the positive photoresist will dissolve in the developer, while the unexposed portion will remain. The exposed portion of the photoresist material layer 180 may include an exposed first sub-section 181 and a third sub-section 183.

[0094] For example, the photoresist material layer 180 can be a negative photoresist. After exposure, the exposed portion of the negative photoresist undergoes a cross-linking reaction and does not dissolve in the developer, while the unexposed portion dissolves. The exposed portion of the photoresist material layer 180 may include an exposed second sub-section 182.

[0095] For example, the photoresist material layer 180 can be formed by coating, spraying or other methods.

[0096] In other embodiments, referring to Figures 10 and 13, the pixel defining material layer 172 includes a plurality of pixel defining material portions 172a, which are correspondingly disposed in a plurality of partition openings 123. Each pixel defining material portion 172a includes a fourth sub-portion 174, a fifth sub-portion 175, and a sixth sub-portion 176. The fifth sub-portion 175 is disposed on the outer periphery of the fourth sub-portion 174, and the sixth sub-portion 176 is disposed on the outer periphery of the fifth sub-portion 175. The fourth sub-portion 174, the fifth sub-portion 175, and the sixth sub-portion 176 are arranged sequentially from the center to the edge of the pixel defining material portion 172a. After forming the partition structure 120 on one side of the substrate 111, and before forming a plurality of light-emitting functional portions 153 on one side of the substrate 111, a mask layer 191 may be formed on the side of the fifth sub-portion 175 facing away from the substrate 111. The fifth sub-portion 175 is covered by the mask layer 191, while the fourth sub-portion 174 and the sixth sub-portion 176 are not covered by the mask layer 191 and are both exposed outside the mask layer 191. The fourth sub-portion 174 and the sixth sub-portion 176, which are not covered by the mask layer 191, are removed. The fourth sub-portion 174 is removed to form a pixel opening 171, and the sixth sub-portion 176 is removed to form a second gap 132. The fifth sub-portion 175, which is covered by the mask, is retained to form a pixel defining portion 170. Then, the mask layer 191 is removed, exposing the pixel defining portion 170.

[0097] In some embodiments, referring to Figures 5 and 6, after providing the substrate 111 and before forming the pixel defining material layer 172 on one side of the substrate 111, a conductive material layer 192 may be formed on one side of the substrate 111. Then, the conductive material layer 192 is patterned to form a plurality of second electrodes 152 and auxiliary electrodes 140, with a first opening 1721 exposing at least a portion of the auxiliary electrodes 140. In this way, the second electrodes 152 and auxiliary electrodes 140 can be formed simultaneously, thereby simplifying the fabrication process of the second electrodes 152 and auxiliary electrodes 140 and reducing fabrication costs.

[0098] In some embodiments, after forming a plurality of light-emitting functional parts 153 on one side of the substrate 111, a first electrode 151 may be formed on the side of the light-emitting functional parts 153 and the partition structure 120 away from the substrate 111.

[0099] For example, the first electrode 151 is formed by vapor deposition. The vapor deposition angle γ of the first electrode 151 is smaller than the angle β between either the first extension 1211 or the second extension 1212 and the substrate 111. In this way, the first electrode 151 can be vapor deposited onto the first sidewall 1231, thereby allowing the first electrode 151 to contact the second sub-sidewall 1242, so as to form a full-surface first electrode 151 and electrically connect the first electrode 151 and the partition structure 120 together.

[0100] It should be noted that during the vapor deposition process, an evaporation cloud of the vapor deposition material can be formed. S indicates the edge of the evaporation cloud, and the angle between the edge S of the evaporation cloud and the direction parallel to the substrate 111 is the vapor deposition angle.

[0101] For example, the light-emitting functional part 153 is formed by vapor deposition. When the vapor deposition angle of the light-emitting functional part 153 is greater than the angle β between either the first extension segment 1211 or the second extension segment 1212 and the substrate 111, the light-emitting functional part 153 cannot contact the first sidewall 1231, which can easily lead to the formation of a hole between the light-emitting functional part 153 and the first sidewall 1231. When the vapor deposition angle of the light-emitting functional part 153 is less than the angle β between either the first extension segment 1211 or the second extension segment 1212 and the substrate 111, the light-emitting functional part 153 may completely cover the first sidewall 1231, causing the first electrode 151 to be unable to contact the second sub-sidewall 1242. Therefore, the vapor deposition angle of the light-emitting functional part 153 can be set to be equal to the angle β between either the first extension segment 1211 or the second extension segment 1212 and the substrate 111, thereby preventing the above-mentioned problems.

[0102] In some embodiments, after providing the substrate 111 and before forming the second electrode 152, an array layer may be formed.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: A substrate; a partition structure disposed on one side of the substrate, the partition structure having multiple partition openings; multiple light-emitting functional parts disposed on one side of the substrate, the multiple light-emitting functional parts and the multiple partition openings being correspondingly arranged, at least a portion of the light-emitting functional parts being disposed within the corresponding partition openings; wherein, the partition structure includes a first partition wall located between two adjacent partition openings, the first partition wall including a first extension section, a second extension section and a third extension section, the first extension section being located on the side of the second extension section near one partition opening, the third extension section being located on the side of the second extension section near another partition opening; the end of the first extension section near the substrate is connected to the second extension section, the end of the first extension section away from the substrate is inclined in a direction away from the third extension section relative to the end near the substrate, the end of the third extension section near the substrate is connected to the second extension section, the end of the third extension section away from the substrate is inclined in a direction away from the first extension section relative to the end near the substrate; the first partition wall encloses and forms a groove, the groove being recessed in a direction close to the substrate.

2. The display panel according to claim 1, characterized in that, The partition structure includes a first sub-sidewall and a second sub-sidewall connected to each other on the sidewall near the partition opening. The first sub-sidewall is disposed between the second sub-sidewall and the substrate. In the corresponding light-emitting functional part and the partition opening, the light-emitting functional part is in contact with the first sub-sidewall, and there is a first gap between the light-emitting functional part and the second sub-sidewall.

3. The display panel according to claim 2, characterized in that, The display panel includes a filler, which is disposed on the side of the partition structure opposite to the substrate, and there is a gap between the filler and the light-emitting functional part.

4. The display panel according to claim 3, characterized in that, The filler and the light-emitting functional part are made of the same layer and the same material.

5. The display panel according to any one of claims 2-4, characterized in that, The display panel includes a first electrode, which includes a first sub-electrode and a plurality of second sub-electrodes. The first sub-electrode is connected to each of the second sub-electrodes. The first sub-electrode is disposed on the side of the partition structure away from the substrate. The plurality of second sub-electrodes are correspondingly disposed with the plurality of light-emitting functional parts. The second sub-electrodes are disposed on the side of the corresponding light-emitting functional part away from the substrate.

6. The display panel according to claim 5, characterized in that, The first electrode includes a plurality of third sub-electrodes. The third sub-electrodes are disposed on the side of the first sub-electrodes facing the substrate and are connected to the first sub-electrodes. The third sub-electrodes are correspondingly disposed in the first gaps and are in contact with the corresponding second sub-sidewalls. The partition structure is a conductive element.

7. The display panel according to claim 6, characterized in that, The first sub-electrode includes a fourth extension segment and a fifth extension segment with different extension directions. The fifth extension segment and the second sub-electrode are connected through the fourth extension segment. The third sub-electrode is connected to the end of the fourth extension segment facing the substrate.

8. The display panel according to claim 7, characterized in that, The display panel includes a filler, and the fourth extension, the fifth extension, and the partition structure together enclose and form an accommodating space. The filler is disposed in the accommodating space, the fourth extension covers the side wall of the filler, and the fifth extension is located on the side of the filler away from the substrate.

9. The display panel according to claim 5, characterized in that, The thickness of the second sub-electrode is H, the dimension of the sidewall of the partition structure near the partition opening along the thickness direction of the substrate is C, the thickness of the light-emitting functional part is G, and H, G and C satisfy the following formula: C≤G+H.

10. The display panel according to any one of claims 1-4, characterized in that, The partition structure includes a second partition located between two adjacent first partitions, and the grooves of the two adjacent first partitions are connected through the second partition.

11. The display panel according to any one of claims 1-4, characterized in that, The display panel includes a plurality of pixel defining portions, which are correspondingly disposed with the plurality of partition openings. At least a portion of the pixel defining portion is disposed in the corresponding partition opening, and a second gap is provided between the pixel defining portion and the side wall of the partition structure near the partition opening. The pixel defining portion is provided with a pixel opening. The light-emitting functional portion is located in the corresponding pixel opening, on the side of the corresponding pixel defining portion away from the substrate, and in the corresponding second gap.

12. The display panel according to claim 11, characterized in that, The sidewall of the partition structure near the partition opening is a first sidewall. The dimension of the first sidewall along the direction from one end near the substrate to one end away from the substrate is A. The dimension of the first sidewall along the thickness direction of the substrate is C. The distance between the pixel defining portion and the corresponding first sidewall is E. A, C, and E satisfy the following formula: E 2 ≥A 2 -C 2 .

13. The display panel according to any one of claims 1-4, characterized in that, The thickness of the light-emitting functional part is G, and the dimension of the side wall of the partition structure near the partition opening along the thickness direction of the substrate is C. C and G satisfy the following formula: G≤C.

14. The display panel according to any one of claims 1-4, characterized in that, The display panel includes an auxiliary electrode, which is disposed between the partition structure and the substrate and connected to the partition structure, which is a conductive element.

15. The display panel according to claim 14, characterized in that, The display panel includes a plurality of second electrodes, which are correspondingly disposed with the plurality of light-emitting functional parts. The second electrodes are disposed between the corresponding light-emitting functional parts and the substrate, and the second electrodes and the auxiliary electrodes are disposed in the same layer and made of the same material.

16. The display panel according to claim 14, characterized in that, The side of the partition structure facing the substrate is a first surface, and the side of the auxiliary electrode facing the substrate is a second surface. The orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate.

17. A display device, characterized in that, Includes the display panel as described in any one of claims 1-16.

18. A method for manufacturing a display panel, characterized in that, include: A substrate is provided; a partition structure is formed on one side of the substrate; the partition structure has a plurality of partition openings; a plurality of light-emitting functional parts are formed on one side of the substrate; the plurality of light-emitting functional parts and the plurality of partition openings are correspondingly arranged, and at least a portion of the light-emitting functional parts are disposed within the corresponding partition openings; wherein, the partition structure includes a first partition wall located between two adjacent partition openings, the first partition wall including a first extension section, a second extension section and a third extension section, the first extension section being located on the side of the second extension section near one partition opening, the third extension section being located on the side of the second extension section near another partition opening; the end of the first extension section near the substrate is connected to the second extension section, the end of the first extension section away from the substrate is inclined in a direction away from the third extension section relative to the end near the substrate, the end of the third extension section near the substrate is connected to the second extension section, the end of the third extension section away from the substrate is inclined in a direction away from the first extension section relative to the end near the substrate; the first partition wall encloses and forms a groove, the groove being recessed in a direction close to the substrate.

19. The method for manufacturing a display panel according to claim 18, characterized in that, Before forming the partition structure on one side of the substrate, the method includes: forming a pixel defining material layer on one side of the substrate; forming a first opening on the pixel defining material layer; forming the partition structure on one side of the substrate includes: forming a partition material layer on the side of the pixel defining material layer opposite to the substrate and in the first opening; removing the partition material layer located outside the first opening, retaining the partition material layer located in the first opening, and forming the partition structure.

20. The method for manufacturing a display panel according to claim 19, characterized in that, After forming the partition structure on one side of the substrate, the method includes: removing the pixel defining material layer; forming a photoresist material layer on one side of the substrate; the photoresist material layer includes a plurality of photoresist material portions, the photoresist material portions are correspondingly disposed in the plurality of partition openings, the photoresist material portions are disposed in the corresponding partition openings, the photoresist material portions include a first sub-portion, a second sub-portion and a third sub-portion, the second sub-portion is disposed on the outer periphery of the first sub-portion, and the third sub-portion is disposed on the outer periphery of the second sub-portion; exposing a portion of the photoresist material layer; developing to remove the first sub-portion to form a pixel opening, developing to remove the third sub-portion to form a second gap, and retaining the second sub-portion to form a pixel defining portion.

21. The method for manufacturing a display panel according to claim 19, characterized in that, The pixel defining material layer includes a plurality of pixel defining material portions, each pixel defining material portion being disposed corresponding to a plurality of partition openings. Each pixel defining material portion is disposed within a corresponding partition opening. Each pixel defining material portion includes a fourth sub-part, a fifth sub-part, and a sixth sub-part. The fifth sub-part is disposed on the outer periphery of the fourth sub-part, and the sixth sub-part is disposed on the outer periphery of the fifth sub-part. After forming a partition structure on one side of the substrate, the process includes: forming a mask layer on the side of the fifth sub-part facing away from the substrate; exposing both the fourth and sixth sub-parts outside the mask layer; removing the fourth sub-part to form a pixel opening; removing the sixth sub-part to form a second gap; retaining the fifth sub-part to form a pixel defining portion; and removing the mask layer.

22. The method for manufacturing a display panel according to claim 19, characterized in that, Before forming a pixel-defining material layer on one side of the substrate, the method includes: forming a conductive material layer on one side of the substrate; patterning the conductive material layer to form a plurality of second electrodes and auxiliary electrodes; and exposing the auxiliary electrodes through the first opening.

23. The method for manufacturing a display panel according to any one of claims 18-22, characterized in that, After forming a plurality of light-emitting functional parts on one side of the substrate, the method includes: forming a first electrode on the side of the light-emitting functional parts and the partition structure away from the substrate; wherein the first electrode is formed by vapor deposition; the vapor deposition angle of the first electrode is less than the angle between the substrate and either the first extension segment or the second extension segment; and / or, the light-emitting functional parts are formed by vapor deposition; the vapor deposition angle of the light-emitting functional parts is equal to the angle between the substrate and either the first extension segment or the second extension segment.

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