Display panel, display equipment and manufacturing method of display panel

Abstract

The invention provides a display panel, a display device and a manufacturing method of the display panel, the display panel comprises a substrate, a pixel defining layer, an isolation structure and a plurality of sub-pixels, the pixel defining layer and the isolation structure are both arranged on the substrate, the pixel defining layer is provided with a pixel defining part and a first pixel opening defined by the pixel defining part, and the sub-pixels are arranged on the isolation structure. The pixel defining part comprises a first pixel inner wall facing the first pixel opening, the first pixel inner wall comprises a first pixel side wall extending by a first length in the first direction and a second pixel side wall extending by a second length in the second direction, and the first length is larger than the second length; an acute included angle is formed between the first direction and the second direction and is parallel to the substrate; the isolation structure defines a plurality of isolation openings communicated with the corresponding pixel openings; the sub-pixels comprise first sub-pixels, and first electrodes of the first sub-pixels extend on the side walls of the first pixels and are in lap joint with the isolation structures.

Description

Technical Field

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

[0002] Organic light-emitting displays (OLEDs) are devices that generate electroluminescence using a multilayer organic thin-film structure. They work by having thousands of subpixels arranged in a specific pattern on a substrate. These subpixels can emit light of specific colors, such as red, green, or blue.

[0003] In related technologies, subpixels are prone to insufficient brightness. Summary of the Invention

[0004] To address the aforementioned problems, embodiments of this application provide a display panel, a display device, and a method for manufacturing the display panel, thereby at least partially resolving the problems.

[0005] According to a first aspect of the present application, a display panel is provided, the display panel including a substrate, a pixel defining layer, an isolation structure, and a plurality of sub-pixels. The pixel defining layer is disposed on the substrate, the pixel defining layer having a pixel defining portion and a plurality of pixel openings defined by the pixel defining portion, the plurality of pixel openings including a first pixel opening, the pixel defining portion including a first pixel inner wall facing the first pixel opening, the first pixel inner wall including a first pixel sidewall extending a first length along a first direction and a second pixel sidewall extending a second length along a second direction, the first length being greater than the second length, the first direction and the second direction having an acute angle and both being parallel to the substrate; the isolation structure is disposed on the substrate, the isolation structure defining a plurality of isolation openings, the isolation openings communicating with the corresponding pixel openings; at least a portion of the sub-pixels are located in the corresponding pixel openings, and the sub-pixels include a light-emitting structure layer and a first electrode stacked sequentially along a direction away from the substrate, the plurality of sub-pixels including a first sub-pixel, at least a portion of the first sub-pixel being located in the first pixel opening, the first electrode of the first sub-pixel extending on the first pixel sidewall and overlapping with the isolation structure.

[0006] In one example, the first electrode of the first sub-pixel extends on the sidewall of the first pixel and extends a first distance on the isolation structure, and the first electrode of the first sub-pixel extends on the sidewall of the second pixel and extends a second distance on the isolation structure, wherein the first distance is greater than the second distance;

[0007] Preferably, the value of the second distance is zero;

[0008] Preferably, the first electrode of the first sub-pixel extends from the sidewall of the second pixel and is spaced apart from the isolation structure.

[0009] In one example, the isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthographic projection of the side of the second isolation portion away from the substrate on the substrate is located within the orthographic projection of the first isolation portion on the substrate.

[0010] Preferably, the material of the first isolation portion includes a conductive material;

[0011] Preferably, the isolation structure further includes a third isolation portion located on the side of the first isolation portion facing the substrate, the material of the third isolation portion including molybdenum; and / or, the material of the first isolation portion including aluminum; and / or, the material of the second isolation portion including titanium;

[0012] Preferably, the plurality of isolation openings includes a first isolation opening, the first isolation opening being in communication with the first pixel opening, the isolation structure including a first isolation inner wall facing the first isolation opening, the first isolation inner wall including a first isolation sidewall extending along the first direction and a second isolation sidewall extending along the second direction, the length of the first isolation sidewall extending along the first direction being greater than the length of the second isolation sidewall extending along the second direction.

[0013] In one example, the plurality of pixel openings further includes a second pixel opening, and the plurality of sub-pixels further includes a second sub-pixel, wherein: the pixel defining portion includes a second pixel inner wall facing the second pixel opening, the second pixel inner wall includes a third pixel sidewall extending a third length along a third direction and a fourth pixel sidewall extending a fourth length along a fourth direction, the third length being greater than the fourth length, the third direction and the fourth direction having an included angle and both being parallel to the substrate; at least a portion of the second sub-pixel is located in the second pixel opening, and a first electrode of the second sub-pixel extends on the third pixel sidewall and overlaps with the isolation structure;

[0014] Preferably, the first electrode of the second sub-pixel extends on the sidewall of the third pixel and extends a third distance on the isolation structure, and the first electrode of the second sub-pixel extends on the sidewall of the fourth pixel and extends a fourth distance on the isolation structure, wherein the third distance is greater than the fourth distance;

[0015] Preferably, the value of the fourth distance is zero;

[0016] Preferably, the first electrode of the second sub-pixel extends from the sidewall of the fourth pixel and is spaced apart from the isolation structure.

[0017] In one example, the plurality of pixel openings further includes a third pixel opening, and the plurality of sub-pixels further includes a third sub-pixel, wherein: the pixel defining portion includes a third pixel inner wall facing the third pixel opening, the third pixel inner wall includes a fifth pixel sidewall extending a fifth length along a fifth direction and a sixth pixel sidewall extending a sixth length along a sixth direction, the fifth length being greater than the sixth length, the fifth direction and the sixth direction having an included angle and both being parallel to the substrate; at least a portion of the third sub-pixel is located in the third pixel opening, and a first electrode of the third sub-pixel extends from the fifth pixel sidewall and overlaps with the isolation structure;

[0018] Preferably, the first electrode of the third sub-pixel extends from the sidewall of the fifth pixel and extends a fifth distance on the isolation structure, and the first electrode of the third sub-pixel extends from the sidewall of the sixth pixel and extends a sixth distance on the isolation structure, wherein the fifth distance is greater than the sixth distance;

[0019] Preferably, the value of the sixth distance is zero;

[0020] Preferably, the first electrode of the third sub-pixel extends from the sidewall of the sixth pixel and is spaced apart from the isolation structure.

[0021] In one example, the first direction is parallel to the third direction, and / or the first direction is parallel to the fifth direction, and / or the third direction is parallel to the fifth direction; preferably, the second direction is parallel to the fourth direction, and / or the second direction is parallel to the sixth direction, and / or the fourth direction is parallel to the sixth direction.

[0022] In one example, at least two of the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue; preferably, the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue.

[0023] In one example, the shape of the orthographic projection of the first pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape; and / or, the shape of the orthographic projection of the second pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape; and / or, the shape of the orthographic projection of the third pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape; preferably, the shapes of the orthographic projections of the first pixel opening, the second pixel opening, and the third pixel opening onto the substrate are the same.

[0024] In one example, the plurality of pixel openings further includes a fourth pixel opening, and the plurality of sub-pixels further includes a fourth sub-pixel, wherein: the pixel defining portion includes a fourth pixel inner wall facing the fourth pixel opening, the fourth pixel inner wall includes a seventh pixel sidewall extending a seventh length along a seventh direction and an eighth pixel sidewall extending an eighth length along an eighth direction, the seventh length being greater than the eighth length, the seventh direction and the eighth direction having an included angle and both being parallel to the substrate; at least a portion of the fourth sub-pixel is located in the fourth pixel opening, and a first electrode of the fourth sub-pixel extends from the seventh pixel sidewall and overlaps with the isolation structure;

[0025] Preferably, the first electrode of the fourth sub-pixel extends from the sidewall of the seventh pixel and extends a seventh distance on the isolation structure, the first electrode of the fourth sub-pixel extends from the sidewall of the eighth pixel and extends an eighth distance on the isolation structure, and the seventh distance is greater than the eighth distance;

[0026] Preferably, the value of the eighth distance is zero;

[0027] Preferably, the first electrode of the fourth sub-pixel extends from the sidewall of the eighth pixel and is spaced apart from the isolation structure.

[0028] In one example, the first direction is parallel to the seventh direction, and / or the second direction is parallel to the eighth direction.

[0029] In one example, the fourth sub-pixel emits white light.

[0030] In one example, the shape of the orthographic projection of the fourth pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape; preferably, the orthographic projections of the first pixel opening, the second pixel opening, the third pixel opening, and the fourth pixel opening onto the substrate have the same shape.

[0031] According to a second aspect of the embodiments of this application, a display device is provided, the display device including the display panel described above.

[0032] According to a third aspect of the embodiments of this application, a method for manufacturing a display panel is provided, the method comprising:

[0033] A backplate is provided for a first electrode of a sub-pixel to be vapor-deposited. The backplate includes a substrate, a pixel defining layer, and an isolation structure. The pixel defining layer and the isolation structure are disposed on the same side of the substrate. The pixel defining layer has a pixel defining portion and an opening for a pixel to be vaporized defined by the pixel defining portion. The pixel defining portion includes a first inner wall of a pixel facing the opening for a pixel to be vaporized. The first inner wall of a pixel includes a first sidewall extending a first length along a first direction and a second sidewall extending a second length along a second direction. The first length is greater than the second length. The first direction and the second direction have an acute angle between them and are both parallel to the substrate. The isolation structure defines an isolation opening for vaporization, and the isolation opening for vaporization is connected to the corresponding opening for a pixel to be vaporized.

[0034] A vapor deposition source is provided, with the vapor deposition material outlet of the vapor deposition source facing the back plate for full-surface vapor deposition, and the vapor deposition source is able to translate along a preset direction, which is perpendicular to the first direction and parallel to the substrate.

[0035] Based on the display panel provided in this application, since the first length is greater than the second length, it is known that the sidewall of the first pixel has increased in length relative to the sidewall of the second pixel. Furthermore, since the first electrode of the first sub-pixel extends on the sidewall of the first pixel and overlaps with the isolation structure, the length of the overlap area between the first electrode and the isolation structure can be the first length, meaning the length of the overlap area in the first direction can be increased, thereby increasing the overlap area between the first electrode and the isolation structure. Increasing the overlap area can reduce the conductive impedance between the first electrode and the isolation structure. This ensures sufficient conductive current between the sub-pixel and the isolation structure, thereby ensuring that the sub-pixel has sufficient luminous brightness. Attached Figure Description

[0036] The accompanying drawings are intended only to illustrate and explain this application and do not limit the scope of this application.

[0037] Figure 1a This is a structural diagram of a display panel in one state during the manufacturing process, as described in related technologies.

[0038] Figure 1b This is a structural diagram illustrating another state of a display panel during its manufacturing process, as described in related technologies.

[0039] Figure 1c This is a structural diagram illustrating another state of a display panel during its manufacturing process, as described in related technologies.

[0040] Figure 1dThis is a structural diagram illustrating another state of a display panel during its manufacturing process, as described in related technologies.

[0041] Figure 2 This is a partial structural diagram of a display panel provided in an exemplary embodiment of this application;

[0042] Figure 3 This is a partial structural schematic diagram of a display panel provided in an exemplary embodiment of this application;

[0043] Figure 4 A schematic diagram of the orthographic projection of the first pixel opening on the substrate is shown;

[0044] Figure 5 A schematic diagram of the orthographic projection of a first pixel opening and a first isolation opening on a substrate is shown.

[0045] Figure 6 This is a schematic diagram of the orthographic projection of the pixel opening on the substrate in a display panel provided in this application;

[0046] Figure 7 This is a schematic diagram of the orthographic projection of the pixel openings on the substrate in another display panel provided in this application;

[0047] Figure 8 This is a schematic diagram of the orthographic projection of the pixel openings on the substrate in another display panel provided in this application;

[0048] Figure 9 This is a schematic diagram of the orthographic projection of the pixel openings on the substrate in another display panel provided in this application;

[0049] Figure 10 This is a partial structural diagram of a display panel provided in this application;

[0050] Figure 11 This is a flowchart illustrating a method for manufacturing a display panel as provided in this application;

[0051] Figure 12 This is a schematic diagram showing the relative positions between the vapor deposition source and the back plate in a method for manufacturing a display panel provided in this application.

[0052] Figure 13 This is a schematic diagram of another relative position between the vapor deposition source and the back plate in a method for manufacturing a display panel provided in this application, wherein the vapor deposition range and vapor deposition angle of the vapor deposition material diffuse from the vapor deposition source toward the back plate are indicated by dashed lines.

[0053] Explanation of reference numerals in the attached figures:

[0054] 11 - First sub-pixel, 12 - Second sub-pixel, 13 - Third sub-pixel

[0055] 14-Substrate, 15-Pixel defining layer, 16-Isolation structure;

[0056] 171 - First encapsulation layer, 172 - Second encapsulation layer;

[0057] 21-Substrate, 22-Pixel defining layer,

[0058] 221 - First pixel opening, 222 - Second pixel opening, 223 - Third pixel opening, 224 - Fourth pixel opening.

[0059] 201 - First pixel sidewall, 203 - Third pixel sidewall, 205 - Fifth pixel sidewall, 207 - Seventh pixel sidewall;

[0060] 23-Isolation structure, 231-First isolation section, 232-Second isolation section, 233-Third isolation section;

[0061] 2301 - First isolation opening; 2302 - First isolation sidewall;

[0062] 301 - First electrode, 302 - Second electrode, 303 - Light-emitting structure layer, 31 - First sub-pixel, 32 - Second sub-pixel

[0063] 33 - Third sub-pixel, 34 - Fourth sub-pixel;

[0064] 41-First package structure, 42-Second package structure, 43-Third package structure, 44-Fourth package structure;

[0065] 50 - Backplate, 51 - Pixel opening to be vaporized, 60 - Vaporization source, 70 - Masking component;

[0066] X - Preset direction, Y - First direction. Detailed Implementation

[0067] To provide a clearer understanding of the technical features, objectives, and effects of the embodiments of this application, the specific implementation methods of the embodiments of this application will now be described with reference to the accompanying drawings.

[0068] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0069] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one or more, or only one or more are labeled.

[0070] In related technologies, reference Figures 1a to 1d The display panel includes a substrate 14, a pixel defining layer 15, an isolation structure 16, and sub-pixels. The sub-pixels are disposed in a specific manner within the pixel openings of the pixel defining layer 15 and surrounded by the isolation structure 16. Different sub-pixels can emit different colors of light, such as red, blue, or green light. Each sub-pixel includes an anode, a light-emitting structure layer, and a cathode sequentially distributed along a direction away from the substrate 14. The isolation structure 16 comprises a conductive metallic material to be conductive, and the cathodes of adjacent sub-pixels are electrically connected through the isolation structure 16.

[0071] In the related technologies for manufacturing display panels, after setting the isolation structure 16 on the pixel boundary layer 15, the first step is, as follows: Figure 1a As shown, the light-emitting structure layer and cathode layer of the first sub-pixel 11 are obtained by full-area evaporation, and then the first encapsulation layer 171 is obtained by chemical vapor deposition. At this time, the first sub-pixel 11 and the first encapsulation layer 171 are covered in each pixel opening and on the isolation structure 16. The second step is as follows: Figure 1b As shown, through patterned etching, the unnecessary first sub-pixel 11 and first encapsulation layer 171 are removed, leaving only the first encapsulation layer and first sub-pixel 11 corresponding to the first pixel opening. The third step, as... Figure 1c As shown, the light-emitting structure layer and cathode layer of the second sub-pixel 12 are obtained by full-area evaporation, and then the second encapsulation layer 172 is obtained by chemical vapor deposition. At this time, the second sub-pixel 12 and the second encapsulation layer 172 are covered in each pixel opening and on the isolation structure 16. The fourth step, as... Figure 1d As shown, through patterned etching, the unwanted second sub-pixel 12 and second encapsulation layer 172 are removed, leaving only the second encapsulation layer and second sub-pixel 12 corresponding to the second pixel opening. Similarly, the light-emitting structure layer and cathode layer of the third sub-pixel 13 can be obtained through full-surface evaporation, and then the third encapsulation layer can be obtained through chemical vapor deposition. Then, through patterned etching, the unwanted third sub-pixel 13 and third encapsulation layer are removed, leaving only the third encapsulation layer and third sub-pixel 13 corresponding to the third pixel opening.

[0072] Among them, patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN20241099419 and PCT / CN20241099072 describe relevant technical solutions for isolation structures, the contents of which are incorporated herein by reference.

[0073] Because the isolation structure 16 comprises a metallic conductive material, during each patterning etching process to remove unwanted sub-pixels and encapsulation layers, the metallic conductive material of the isolation structure 16 is easily exposed to a water-oxygen environment, making it prone to oxidation. This leads to an increase in the conductive impedance between the cathode and the isolation structure 16. Increased conductive impedance can cause insufficient sub-pixel brightness.

[0074] To solve this problem, such as Figures 2 to 4 As shown, in a first aspect, this application provides a display panel including a substrate 21, a pixel defining layer 22, an isolation structure 23, and a plurality of sub-pixels.

[0075] The pixel defining layer 22 has a pixel defining portion and a plurality of pixel openings defined by the pixel defining portion. The plurality of pixel openings include a first pixel opening 221. The pixel defining portion includes a first pixel inner wall facing the first pixel opening 221. The first pixel inner wall includes a first pixel sidewall 201 extending a first length along a first direction Y and a second pixel sidewall extending a second length along a second direction. The first length is greater than the second length. There is an acute angle between the first direction and the second direction, and both are parallel to the substrate 21.

[0076] An isolation structure 23 is disposed on a substrate 21. The isolation structure 23 defines multiple isolation openings, and the isolation openings are connected to the corresponding pixel openings.

[0077] At least a portion of the sub-pixel is located in the corresponding pixel opening, and the sub-pixel includes a light-emitting structure layer 303 and a first electrode 301 stacked sequentially along the direction away from the substrate 21. The plurality of sub-pixels include a first sub-pixel 31, at least a portion of the first sub-pixel 31 is located in the first pixel opening 221, and the first electrode 301 of the first sub-pixel 31 extends on the sidewall of the first pixel and overlaps with the isolation structure.

[0078] It should be understood that the inner wall of the first pixel may include a plurality of pixel sidewalls connected end to end to surround and form the opening of the first pixel. The second pixel sidewall among the plurality of pixel sidewalls may refer to any pixel sidewall that is not parallel to the first pixel sidewall. The first pixel sidewall extending a first length along the first direction Y is the longest sidewall among the plurality of pixel sidewalls, and the remaining pixel sidewalls shorter than the first pixel sidewall can all be called second pixel sidewalls. In other words, the orthographic projection of the inner wall of the first pixel onto the substrate 21 is a first non-equilateral polygon, which includes a first side extending along the first direction Y, wherein the length of the first side is greater than the length of the other sides of the first non-equilateral polygon.

[0079] Based on the above technical solution, since the first length is greater than the second length, it can be seen that the sidewall of the first pixel has increased in length relative to the sidewall of the second pixel. Furthermore, since the first electrode 301 of the first sub-pixel 31 extends on the sidewall of the first pixel and overlaps with the isolation structure 23, the length of the overlap area between the first electrode 301 and the isolation structure 23 can be the first length, that is, the length of the overlap area between the first electrode 301 and the isolation structure 23 in the first direction can be increased, thereby increasing the overlap area between the first electrode 301 and the isolation structure 23. Increasing the overlap area can reduce the conductive impedance between the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring that the sub-pixel has sufficient luminous brightness.

[0080] In one example, the isolation structure 23 may be disposed on the side of the pixel defining layer 22 facing away from the substrate 21.

[0081] In one example, refer to Figure 3 The sub-pixel also includes a second electrode 302, and the light-emitting structure layer 303 is disposed between the second electrode 302 and the first electrode 301. One of the second electrode 302 and the first electrode 301 can be an anode, and the other can be a cathode.

[0082] In one possible embodiment, reference Figure 2 The first electrode 301 of the first sub-pixel 31 extends along the sidewall of the first pixel and along the isolation structure 23 by a first distance. The first electrode 301 of the first sub-pixel 31 also extends along the sidewall of the second pixel and along the isolation structure 23 by a second distance, where the first distance is greater than the second distance. Therefore, in the region corresponding to the sidewall of the first pixel, the length of the overlap area between the first electrode 301 of the first sub-pixel 31 and the isolation structure can be the first length, and the overlap width is the first distance. In the region corresponding to the sidewall of the second pixel, the length of the overlap area between the first electrode 301 of the first sub-pixel 31 and the isolation structure is the second length, and the overlap width is the second distance. This effectively increases the overlap area between the first electrode 301 of the first sub-pixel 31 and the isolation structure in the region corresponding to the sidewall of the first pixel, thereby increasing the total overlap area between the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thus ensuring sufficient luminous brightness for the sub-pixel.

[0083] The first distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the first pixel, along the direction away from the substrate. Correspondingly, the length of the overlapping area can be the first length. Similarly, the second distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the second pixel, along the direction away from the substrate.

[0084] In one example, the value of the second distance can be zero. That is, in the region corresponding to the sidewall of the fourth pixel, the first electrode 301 is not connected to the isolation structure.

[0085] In another possible embodiment, the first electrode 301 of the first sub-pixel extends from the sidewall of the second pixel and is spaced apart from the isolation structure. That is, in the region corresponding to the sidewall of the second pixel, the first electrode 301 does not overlap with the isolation structure, and there is a gap between them.

[0086] Among them, reference Figure 2 The isolation structure 23 includes a first isolation portion 231 and a second isolation portion 232 sequentially stacked along a direction away from the substrate. The orthographic projection of the side of the first isolation portion 231 away from the substrate onto the substrate lies within the orthographic projection of the second isolation portion 232 onto the substrate. Thus, the second isolation portion 232 not only protects the first isolation portion 231 but also extends beyond the first isolation portion 231, forming an eaves-like structure. During the vapor deposition of the first electrode 301, it is easy for the first electrode 301 to become discontinuous and intermittent near the eaves-like structure. Therefore, the isolation structure reliably separates adjacent first electrodes 301.

[0087] Preferably, the material of the first isolation portion includes a conductive material. This allows the first electrode 301 of the first sub-pixel to conductively connect with the first isolation portion. The first electrode 301 of the first sub-pixel connects and conducts with the first isolation portion 231 of the isolation structure 23, thereby achieving electrical connection between the first electrodes 301 of the first sub-pixels. Thus, through the isolation structure 23, the cathodes of each first sub-pixel are connected in a mesh-like pattern, which is beneficial for cathode uniformity.

[0088] Preferably, refer to Figure 3 The isolation structure 23 also includes a third isolation portion 233 located on the side of the first isolation portion 231 facing the substrate 21. The material of the third isolation portion may include molybdenum. The material of the first isolation portion may include aluminum. The material of the second isolation portion may include titanium.

[0089] Preferably, refer to Figure 3 and Figure 5The system includes multiple isolation openings, including a first isolation opening 2301 that communicates with a first pixel opening 221. The isolation structure includes a first inner isolation wall facing the first isolation opening. The first inner isolation wall includes a first sidewall 2302 extending in a first direction and a second sidewall extending in a second direction. The length of the first sidewall extending in the first direction is greater than the length of the second sidewall extending in the second direction. Thus, the length of the overlap area between the first electrode 301 and the first sidewall in the first direction is greater than the length of the overlap area between the first electrode 301 and the second sidewall in the second direction. This increases the overlap area between the first electrode 301 and the isolation structure 23, thereby increasing the overlap area. The increased overlap area reduces the conductive impedance between the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring sufficient luminous brightness for the sub-pixel.

[0090] In one possible implementation, refer to Figure 6 and Figure 10 The plurality of pixel openings also include a second pixel opening 222, and the plurality of sub-pixels also include a second sub-pixel 32. The pixel defining portion includes a second pixel inner wall facing the second pixel opening. The second pixel inner wall includes a third pixel sidewall 203 extending a third length along a third direction and a fourth pixel sidewall extending a fourth length along a fourth direction. The third length is greater than the fourth length, and the third and fourth directions form an angle and are both parallel to the substrate. At least a portion of the second sub-pixel is located in the second pixel opening, and the first electrode 301 of the second sub-pixel extends on the third pixel sidewall and overlaps with the isolation structure.

[0091] It should be understood that the inner wall of the second pixel may include a plurality of pixel sidewalls connected end to end to surround and form the second pixel opening. The fourth pixel sidewall among the plurality of pixel sidewalls may refer to any pixel sidewall that is not parallel to the third pixel sidewall 203. The third pixel sidewall 203 extending a third length along a third direction is the longest sidewall among the plurality of pixel sidewalls, and all other pixel sidewalls shorter than the third pixel sidewall may be referred to as the fourth pixel sidewall. In other words, the orthographic projection of the inner wall of the second pixel onto the substrate 21 is a second non-equilateral polygon, which includes a third side extending along a third direction, wherein the length of the third side is greater than the lengths of the other sides of the second non-equilateral polygon.

[0092] Based on the above technical solution, since the third length is greater than the fourth length, it can be seen that the sidewall of the third pixel has increased in length relative to the sidewall of the fourth pixel. Furthermore, since the first electrode 301 of the second sub-pixel 32 extends on the sidewall of the third pixel and overlaps with the isolation structure 23, the length of the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure 23 can be the third length. This means that the length of the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure 23 in the third direction can be increased, thereby increasing the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure 23. Increasing the overlap area can reduce the conductive impedance between the first electrode 301 of the second sub-pixel 32 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring that the sub-pixel has sufficient luminous brightness.

[0093] In one possible embodiment, the first electrode 301 of the second sub-pixel 32 extends on the sidewall of the third pixel and extends a third distance on the isolation structure 23. The first electrode 301 of the second sub-pixel 32 also extends on the sidewall of the fourth pixel and extends a fourth distance on the isolation structure 23, where the third distance is greater than the fourth distance. Therefore, in the region corresponding to the sidewall of the third pixel, the length of the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure can be the third length, and the overlap width is the third distance. In the region corresponding to the sidewall of the fourth pixel, the length of the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure is the fourth length, and the overlap width is the fourth distance. This effectively increases the overlap area between the first electrode 301 of the second sub-pixel 32 and the isolation structure in the region corresponding to the sidewall of the third pixel, thereby increasing the total overlap area between the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring sufficient luminous brightness of the sub-pixel.

[0094] The third distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the third pixel, along the direction away from the substrate. Correspondingly, the length of the overlapping area can be the third length. Similarly, the fourth distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the fourth pixel, along the direction away from the substrate.

[0095] In one example, the value of the fourth distance is zero. That is, in the region corresponding to the sidewall of the fourth pixel, the first electrode 301 of the second sub-pixel 32 is not connected to the isolation structure.

[0096] In another possible embodiment, the first electrode 301 of the second sub-pixel 32 extends from the sidewall of the fourth pixel and is spaced apart from the isolation structure 23. That is, in the region corresponding to the sidewall of the fourth pixel, the first electrode 301 of the second sub-pixel 32 does not overlap with the isolation structure 23, and there is a gap between them.

[0097] In one possible implementation, refer to Figure 7 and Figure 10 The plurality of pixel openings also include a third pixel opening 223, and the plurality of sub-pixels also include a third sub-pixel 33. The pixel defining portion includes a third pixel inner wall facing the third pixel opening. The third pixel inner wall includes a fifth pixel sidewall 205 extending a fifth length along a fifth direction and a sixth pixel sidewall extending a sixth length along a sixth direction. The fifth length is greater than the sixth length, and the fifth and sixth directions form an angle and are both parallel to the substrate. At least a portion of the third sub-pixel is located in the third pixel opening, and the first electrode 301 of the third sub-pixel extends along the fifth pixel sidewall and overlaps with the isolation structure.

[0098] It should be understood that the inner wall of the third pixel may include a plurality of sequentially connected pixel sidewalls to surround and form the third pixel opening. The sixth pixel sidewall among the plurality of pixel sidewalls may refer to any pixel sidewall that is not parallel to the fifth pixel sidewall 205. The fifth pixel sidewall 205 extending a fifth length along the fifth direction is the longest sidewall among the plurality of pixel sidewalls, and any other pixel sidewall shorter than the fifth pixel sidewall may be referred to as the sixth pixel sidewall. In other words, the orthographic projection of the inner wall of the third pixel onto the substrate 21 is a third non-equilateral polygon, which includes a fifth side extending along the fifth direction, wherein the length of the fifth side is greater than the lengths of the other sides in the third non-equilateral polygon.

[0099] Based on the above technical solution, since the fifth length is greater than the sixth length, it can be seen that the sidewall of the fifth pixel has increased in length relative to the sidewall of the sixth pixel. Furthermore, since the first electrode 301 of the third sub-pixel 33 extends on the sidewall of the fifth pixel and overlaps with the isolation structure 23, the length of the overlap area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23 can be the fifth length. That is, the length of the overlap area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23 in the fifth direction can be increased, thereby increasing the overlap area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23. Increasing the overlap area can reduce the conductive impedance between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring that the sub-pixel has sufficient luminous brightness.

[0100] In one possible embodiment, the first electrode 301 of the third sub-pixel 33 extends from the sidewall of the fifth pixel and extends a fifth distance on the isolation structure 23. The first electrode 301 of the third sub-pixel 33 also extends from the sidewall of the sixth pixel and extends a sixth distance on the isolation structure 23, where the fifth distance is greater than the sixth distance. Therefore, in the region corresponding to the sidewall of the fifth pixel, the length of the overlapping area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23 can be the fifth length, and the overlapping width is the fifth distance. In the region corresponding to the sidewall of the sixth pixel, the length of the overlapping area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23 is the sixth length, and the overlapping width is the sixth distance. This effectively increases the overlapping area between the first electrode 301 of the third sub-pixel 33 and the isolation structure 23 in the region corresponding to the sidewall of the fifth pixel, thereby increasing the total overlapping area of ​​the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thus ensuring sufficient luminous brightness for the sub-pixel.

[0101] The fifth distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the fifth pixel, along the direction away from the substrate. Correspondingly, the length of the overlapping area can be the fifth length. Similarly, the sixth distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the sixth pixel, along the direction away from the substrate.

[0102] In one example, the value of the sixth distance is zero. That is, in the region corresponding to the sidewall of the sixth pixel, the first electrode 301 of the third sub-pixel 33 is not connected to the isolation structure.

[0103] In another possible embodiment, the first electrode 301 of the third sub-pixel 33 extends from the sidewall of the sixth pixel and is spaced apart from the isolation structure 23. That is, in the region corresponding to the sidewall of the sixth pixel, the first electrode 301 of the third sub-pixel 33 does not overlap with the isolation structure 23, and there is a gap between them.

[0104] Optionally, the first direction and the third direction are parallel. Optionally, the first direction and the fifth direction are parallel. Optionally, the third direction and the fifth direction are parallel.

[0105] Optionally, the second and fourth directions are parallel. Optionally, the second and sixth directions are parallel. Optionally, the fourth and sixth directions are parallel.

[0106] In one possible embodiment, at least two of the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue.

[0107] Preferably, the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue.

[0108] In one example, the shape of the orthographic projection of the first pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape. That is, the shape of the orthographic projection of the first pixel opening onto the substrate can be a rectangle, a triangle, or an I-shape.

[0109] In one example, the shape of the orthographic projection of the second pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape. That is, the shape of the orthographic projection of the second pixel opening onto the substrate can be a rectangle, a triangle, or an I-shape.

[0110] In one example, the shape of the orthographic projection of the third pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape. That is, the shape of the orthographic projection of the third pixel opening onto the substrate can be a rectangle, a triangle, or an I-shape.

[0111] Preferably, the first pixel opening, the second pixel opening, and the third pixel opening have the same shape when projected onto the substrate. This reduces the number of opening shapes that can be used on the mask for forming pixel openings on the pixel defining layer 22.

[0112] Preferably, two of the three pixel openings—the first pixel opening, the second pixel opening, and the third pixel opening—have the same shape when projected onto the substrate. This reduces the number of opening shapes that can be used on the mask for forming pixel openings on the pixel defining layer 22.

[0113] In one possible implementation, refer to Figure 8 and Figure 10 The plurality of pixel openings also include a fourth pixel opening 224, and the plurality of sub-pixels also include a fourth sub-pixel 34. The pixel defining portion includes a fourth pixel inner wall facing the fourth pixel opening. The fourth pixel inner wall includes a seventh pixel sidewall 207 extending a seventh length along a seventh direction and an eighth pixel sidewall extending an eighth length along an eighth direction. The seventh length is greater than the eighth length. The seventh direction and the eighth direction have an included angle and are both parallel to the substrate. At least a portion of the fourth sub-pixel is located in the fourth pixel opening. The first electrode 301 of the fourth sub-pixel extends along the seventh pixel sidewall and overlaps with the isolation structure.

[0114] It should be understood that the inner wall of the fourth pixel may include multiple pixel sidewalls connected end-to-end to surround and form the fourth pixel opening. The eighth pixel sidewall among the multiple pixel sidewalls may refer to any pixel sidewall that is not parallel to the seventh pixel sidewall 207. The seventh pixel sidewall 207, which extends a seventh length along the seventh direction, is the longest sidewall among the multiple pixel sidewalls, and the remaining pixel sidewalls shorter than the seventh pixel sidewall can all be called the eighth pixel sidewall. In other words, the orthographic projection of the inner wall of the fourth pixel onto the substrate 21 is a fourth non-equilateral polygon, which includes a seventh side extending along the seventh direction, wherein the length of the seventh side is greater than the length of the other sides in the fourth non-equilateral polygon.

[0115] Based on the above technical solution, since the seventh length is greater than the eighth length, it can be seen that the sidewall of the seventh pixel has increased in length relative to the sidewall of the eighth pixel. Furthermore, since the first electrode 301 of the fourth sub-pixel 34 extends on the sidewall of the seventh pixel and overlaps with the isolation structure 23, the length of the overlap area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23 can be the seventh length. This means the length of the overlap area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23 in the seventh direction can be increased, thereby increasing the overlap area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23. Increasing the overlap area can reduce the conductive impedance between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring that the sub-pixel has sufficient luminous brightness.

[0116] In one possible embodiment, the first electrode 301 of the fourth sub-pixel 34 extends from the sidewall of the seventh pixel and extends a seventh distance on the isolation structure 23. The first electrode 301 of the fourth sub-pixel 34 also extends from the sidewall of the eighth pixel and extends an eighth distance on the isolation structure 23, with the seventh distance being greater than the eighth distance. Therefore, in the region corresponding to the sidewall of the seventh pixel, the length of the overlapping area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23 can be the seventh length, and the overlapping width is the seventh distance. In the region corresponding to the sidewall of the eighth pixel, the length of the overlapping area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23 is the eighth length, and the overlapping width is the eighth distance. This effectively increases the overlapping area between the first electrode 301 of the fourth sub-pixel 34 and the isolation structure 23 in the region corresponding to the sidewall of the seventh pixel, thereby increasing the total overlapping area of ​​the first electrode 301 and the isolation structure 23. This ensures sufficient conductive current between the sub-pixel and the isolation structure 23, thereby ensuring that the sub-pixel has sufficient luminous brightness.

[0117] The seventh distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the seventh pixel, along the direction away from the substrate. Correspondingly, the length of the overlapping area can be the seventh length. Similarly, the eighth distance can be understood as the overlap width of the overlapping area between the first electrode 301 and the isolation structure 23 in the region corresponding to the sidewall of the eighth pixel, along the direction away from the substrate.

[0118] In one example, the value of the eighth distance is zero. That is, in the region corresponding to the sidewall of the eighth pixel, the first electrode 301 of the fourth sub-pixel 34 does not overlap with the isolation structure 23.

[0119] In another possible embodiment, the first electrode 301 of the fourth sub-pixel 34 extends from the sidewall of the eighth pixel and is spaced apart from the isolation structure 23. That is, in the region corresponding to the sidewall of the eighth pixel, the first electrode 301 of the fourth sub-pixel 33 does not overlap with the isolation structure 23, and there is a gap between them.

[0120] Optionally, the first direction and the seventh direction are parallel. Optionally, the second direction and the eighth direction are parallel.

[0121] In one example, the fourth sub-pixel emits white light. Because of the added white sub-pixel, all sub-pixels can produce higher brightness, which is very useful for applications requiring high brightness, such as outdoor displays.

[0122] Preferably, the first sub-pixel 31, the second sub-pixel 32, the third sub-pixel 33, and the fourth sub-pixel 34 can be used to emit red light, blue light, green light, and white light, respectively. Thus, the display panel has four-color pixels, which can provide a wider color gamut, thereby improving color reproduction and making the displayed colors more realistic and richer. Furthermore, since the white sub-pixel does not consume as much energy as the red, green, and blue sub-pixels, the four-color pixels, including the white sub-pixel, can reduce power consumption compared to traditional three-color pixels when producing higher brightness.

[0123] In one example, the shape of the orthographic projection of the fourth pixel opening onto the substrate includes a rectangle, a triangle, and an I-shape. That is, the shape of the orthographic projection of the fourth pixel opening onto the substrate can be a rectangle, a triangle, or an I-shape.

[0124] Preferably, the first pixel opening, the second pixel opening, the third pixel opening, and the fourth pixel opening have the same shape when projected onto the substrate. This reduces the number of opening shapes that can be used on the mask for forming pixel openings on the pixel defining layer 22.

[0125] For reference Figure 9As shown, the first pixel opening 221 is projected onto the substrate 21 in the shape of an I-shape, the second pixel opening 222 is projected onto the substrate 21 in the shape of a triangle, the third pixel opening 223 is projected onto the substrate 21 in the shape of an I-shape, and the fourth pixel opening 224 is projected onto the substrate 21 in the shape of a rectangle.

[0126] Of course, you can refer to it. Figure 10 The multiple isolation openings also include a second isolation opening, a third isolation opening, and a fourth isolation opening that are not labeled. The second isolation opening is connected to the second pixel opening, the third isolation opening is connected to the third pixel opening, and the fourth isolation opening is connected to the fourth pixel opening.

[0127] In one example, refer to Figure 10 The display panel may further include a first encapsulation structure 41, which covers the first electrode of the first sub-pixel 31 and overlaps with the sidewall of the isolation structure 23. The first encapsulation structure 41 can isolate water and oxygen, thus protecting the first sub-pixel 31. After forming the first electrode 313, a first encapsulation layer can be obtained by chemical vapor deposition. Then, excess first encapsulation layer is removed using patterned etching, retaining only the portion corresponding to the first pixel opening 221, thereby obtaining the first encapsulation structure 41. The etching method can be dry etching or wet etching. Therefore, during the etching process to remove excess first encapsulation layer, even if the sidewall of the metal conductive layer 231 oxidizes, the increased overlap area can maintain the conductivity impedance between the first electrode and the metal conductive layer 231 within a suitable range.

[0128] In one example, refer to Figure 10 The display panel may further include a second encapsulation structure 42, which covers the first electrode of the second sub-pixel 32 and overlaps with the sidewall of the isolation structure 23. The second encapsulation structure 42 serves to isolate water and oxygen, thus protecting the second sub-pixel 32. After forming the second first electrode, a second encapsulation layer can be obtained through chemical vapor deposition. Then, excess second encapsulation layer is removed using patterned etching, retaining only the portion corresponding to the second pixel opening 222, thereby obtaining the second encapsulation structure 42. The etching method can be dry etching or wet etching. Therefore, during the etching process to remove excess second encapsulation layer, even if the sidewall of the metal conductive layer 231 oxidizes, the increased overlap area can maintain the conductivity impedance between the first electrode and the metal conductive layer 231 within a suitable range.

[0129] In one example, refer to Figure 10The display panel may also include a third encapsulation structure 43, which covers the first electrode of the third sub-pixel 33 and overlaps with the sidewall of the isolation structure 23. The third encapsulation structure 43 can isolate water and oxygen, thus protecting the third sub-pixel 33. After forming the third first electrode, a third encapsulation layer can be obtained by chemical vapor deposition, and then excess third encapsulation layer is removed using patterned etching, retaining only the portion corresponding to the third pixel opening 223, thereby obtaining the third encapsulation structure 43. The etching method can be dry etching or wet etching. Therefore, during the etching process to remove excess third encapsulation layer, even if the sidewall of the metal conductive layer 231 oxidizes, the increased overlap area can maintain the conductivity impedance between the first electrode and the metal conductive layer 231 within a suitable range.

[0130] In one example, refer to Figure 10 The display panel may further include a fourth encapsulation structure 44, which covers the first electrode of the fourth sub-pixel 34 and overlaps with the sidewall of the isolation structure 23. The fourth encapsulation structure 44 serves to isolate water and oxygen, thus protecting the fourth sub-pixel 34. After forming the fourth first electrode, a fourth encapsulation layer can be obtained through chemical vapor deposition. Then, excess fourth encapsulation layer is removed using patterned etching, retaining only the portion corresponding to the fourth pixel opening 224, thereby obtaining the fourth encapsulation structure 44. The etching method can be dry etching or wet etching. Therefore, during the etching process to remove excess fourth encapsulation layer, even if the sidewall of the metal conductive layer 231 oxidizes, the increased overlap area can maintain the conductivity impedance between the first electrode and the metal conductive layer 231 within a suitable range.

[0131] The luminescent structural layer can include one or more of the following: HIL (Hole Injection Layer), HTL (Hole Transfer Layer), EML (Emitting Layer), and ETL (Electron Transfer Layer). The organic luminescent materials in the luminescent structural layer are generally classified into: polymers, small-molecule organic compounds, and coordination luminescent materials. Polymers are typically conductive or semiconductor conjugated polymers, which can be spin-coated, making them simple and low-cost to manufacture. However, their purity is difficult to improve, and they are inferior to small-molecule organic compounds in terms of durability, brightness, and color. Small-molecule organic luminescent materials are mainly organic dyes, which have advantages such as strong chemical modification capabilities, a wide selection range, easy purification, high quantum efficiency, and the ability to produce emission peaks of various colors such as red, green, blue, and yellow. However, most of them suffer from concentration quenching in the solid state. Coordination luminescent materials lie between organic and inorganic materials, possessing both the high fluorescence quantum efficiency of organic materials and the high stability of inorganic materials, and are considered a promising class of luminescent materials.

[0132] In addition, a driving circuit can be provided on the substrate 21, which is used to drive the sub-pixel to emit light.

[0133] Understandably, the substrate 21 plays a supporting role in the display panel. The substrate 21 is generally divided into two types: rigid substrate and flexible substrate. Rigid substrate is usually made of rigid materials such as glass or plastic, which has good stability and durability and is suitable for large-size displays and professional displays. Flexible substrate is usually made of soft materials such as plastic or metal foil and is suitable for flexible displays and wearable devices.

[0134] Secondly, this application also provides a display device including the aforementioned display panel. Based on the beneficial effects of the aforementioned display panel, the display device has good luminous brightness and a long service life.

[0135] Thirdly, refer to Figures 11 to 12 This application also provides a method for manufacturing a display panel, the method comprising:

[0136] Step S81 involves providing a backplate 50 for the first electrode of the sub-pixel to be vapor-deposited. The backplate includes a substrate 21, a pixel defining layer, and an isolation structure 23. The pixel defining layer and the isolation structure 23 are disposed on the same side of the substrate 21. The pixel defining layer has a pixel defining portion and an opening for the pixel to be vaporized defined by the pixel defining portion. The pixel defining portion includes a first pixel inner wall facing the opening for the pixel to be vaporized. The first pixel inner wall includes a first pixel sidewall extending a first length along a first direction and a second pixel sidewall extending a second length along a second direction. The first length is greater than the second length. There is an acute angle between the first direction and the second direction, and both are parallel to the substrate. The isolation structure defines an isolation opening to be vaporized, and the isolation opening to be vaporized is connected to the corresponding opening for the pixel to be vaporized.

[0137] Step S82: Provide a vapor deposition source 60, so that the vapor deposition material outlet of the vapor deposition source faces the back plate for full-surface vapor deposition, and enable the vapor deposition source to translate along a preset direction X, which is perpendicular to the first direction Y and parallel to the substrate.

[0138] The vapor deposition source 60 can be elongated, and its length direction can be aligned with the first direction.

[0139] Using the above manufacturing method, when depositing the first electrode on the backplate, the deposition source 60 can be moved along a preset direction while the position of the shielding member 70 remains unchanged. This allows adjustment of the deposition angle A, thereby adjusting the width of the deposition material on the isolation structure in the area corresponding to the sidewall of the first pixel. In other words, it adjusts the width of the overlap area between the first electrode and the isolation structure in the area corresponding to the sidewall of the first pixel. Since the sidewall of the first pixel has a first length in the first direction Y, adjusting the width of the overlap area between the first electrode and the isolation structure in the area corresponding to the sidewall of the first pixel can adjust the total overlap area between the first electrode and the metal conductive layer of the sub-pixel, resulting in a larger total overlap area. Even if oxidation occurs on the sidewall of the metal conductive layer during subsequent manufacturing processes of the display panel, the increased total overlap area can still maintain the conductive impedance between the first electrode and the isolation structure within a suitable range, thus ensuring sufficient brightness for the sub-pixel.

[0140] Obviously, a display panel can be obtained through the above manufacturing method, such as the display panel provided in the first aspect of this application.

[0141] It should be understood that directing the vapor deposition source's vapor deposition material outlet toward the backplate for full-surface vapor deposition means that a mask is not used during vapor deposition, allowing the vapor deposition area of ​​the vapor deposition material to cover the entire surface of the backplate on the side where the pixel opening to be vaporized is located.

[0142] The display panel to be fabricated can include multiple sub-pixels for emitting different colors of light. That is, one sub-pixel can emit one color of light, and another sub-pixel can emit a different color of light. Therefore, the pixel openings on the backplane can include multiple types. Thus, when depositing the first electrode for each sub-pixel, the preset direction can be perpendicular to the first direction of the pixel opening to be deposited, which helps to increase the total overlap area between the first electrode and the conductive metal layer of the isolation structure. The fabrication of the next sub-pixel can be performed after the fabrication of one type of sub-pixel is completed.

[0143] In addition, the manufacturing method of this application also includes: after forming a first electrode in each pixel opening to be vapor-deposited, an encapsulation structure can be formed on the first electrode, the encapsulation structure overlapping with the sidewall of the isolation structure to isolate water and oxygen and protect the sub-pixel.

[0144] The above-described manufacturing method provided in this application can be used to obtain the display panel provided in this application.

[0145] It should be noted that, 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0146] It should be understood that although specific embodiments of this application have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this application. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this application. Although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that, include: substrate; A pixel defining layer is disposed on the substrate. The pixel defining layer has a pixel defining portion and a plurality of pixel openings defined by the pixel defining portion. The plurality of pixel openings include a first pixel opening. The pixel defining portion includes a first pixel inner wall facing the first pixel opening. The first pixel inner wall includes a first pixel sidewall extending a first length along a first direction and a second pixel sidewall extending a second length along a second direction. The first length is greater than the second length. The first direction and the second direction have an acute angle between them and are both parallel to the substrate. An isolation structure is disposed on the substrate, the isolation structure defining a plurality of isolation openings, the isolation openings being connected to the corresponding pixel openings; A plurality of sub-pixels, at least a portion of which is located in a corresponding pixel opening, and each sub-pixel includes a light-emitting structure layer and a first electrode stacked sequentially along a direction away from the substrate. The plurality of sub-pixels includes a first sub-pixel, at least a portion of which is located in a first pixel opening. The first electrode of the first sub-pixel extends on the sidewall of the first pixel and overlaps with the isolation structure.

2. The display panel according to claim 1, characterized in that, The first electrode of the first sub-pixel extends on the sidewall of the first pixel and extends a first distance on the isolation structure, and the first electrode of the first sub-pixel extends on the sidewall of the second pixel and extends a second distance on the isolation structure, wherein the first distance is greater than the second distance; Preferably, the value of the second distance is zero; Preferably, the first electrode of the first sub-pixel extends from the sidewall of the second pixel and is spaced apart from the isolation structure.

3. The display panel according to claim 1, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthogonal projection of the side of the first isolation portion away from the substrate on the substrate is located within the orthogonal projection of the second isolation portion on the substrate. Preferably, the material of the first isolation portion includes a conductive material; Preferably, the isolation structure further includes a third isolation portion located on the side of the first isolation portion facing the substrate, the material of the third isolation portion including molybdenum; and / or, the material of the first isolation portion including aluminum; and / or, the material of the second isolation portion including titanium; Preferably, the plurality of isolation openings includes a first isolation opening, the first isolation opening being in communication with the first pixel opening, the isolation structure including a first isolation inner wall facing the first isolation opening, the first isolation inner wall including a first isolation sidewall extending along the first direction and a second isolation sidewall extending along the second direction, the length of the first isolation sidewall extending along the first direction being greater than the length of the second isolation sidewall extending along the second direction.

4. The display panel according to claim 1, characterized in that, The plurality of pixel openings further includes a second pixel opening, and the plurality of sub-pixels further includes a second sub-pixel, wherein: The pixel defining portion includes a second pixel inner wall that opens toward the second pixel. The second pixel inner wall includes a third pixel sidewall that extends a third length along a third direction and a fourth pixel sidewall that extends a fourth length along a fourth direction. The third length is greater than the fourth length. The third direction and the fourth direction have an included angle and are both parallel to the substrate. At least a portion of the second sub-pixel is located in the opening of the second pixel, and the first electrode of the second sub-pixel extends on the sidewall of the third pixel and overlaps with the isolation structure; Preferably, the first electrode of the second sub-pixel extends on the sidewall of the third pixel and extends a third distance on the isolation structure, and the first electrode of the second sub-pixel extends on the sidewall of the fourth pixel and extends a fourth distance on the isolation structure, wherein the third distance is greater than the fourth distance; Preferably, the value of the fourth distance is zero; Preferably, the first electrode of the second sub-pixel extends from the sidewall of the fourth pixel and is spaced apart from the isolation structure.

5. The display panel according to claim 4, characterized in that, The plurality of pixel openings further includes a third pixel opening, and the plurality of sub-pixels further includes a third sub-pixel, wherein: The pixel defining portion includes a third pixel inner wall facing the opening of the third pixel. The third pixel inner wall includes a fifth pixel sidewall extending a fifth length along a fifth direction and a sixth pixel sidewall extending a sixth length along a sixth direction. The fifth length is greater than the sixth length. The fifth direction and the sixth direction have an included angle and are both parallel to the substrate. At least a portion of the third sub-pixel is located in the opening of the third pixel, and the first electrode of the third sub-pixel extends from the sidewall of the fifth pixel and overlaps with the isolation structure; Preferably, the first electrode of the third sub-pixel extends from the sidewall of the fifth pixel and extends a fifth distance on the isolation structure, and the first electrode of the third sub-pixel extends from the sidewall of the sixth pixel and extends a sixth distance on the isolation structure, wherein the fifth distance is greater than the sixth distance; Preferably, the value of the sixth distance is zero; Preferably, the first electrode of the third sub-pixel extends from the sidewall of the sixth pixel and is spaced apart from the isolation structure.

6. The display panel according to claim 5, characterized in that, The first direction is parallel to the third direction, and / or the first direction is parallel to the fifth direction, and / or the third direction is parallel to the fifth direction; Preferably, the second direction is parallel to the fourth direction, and / or the second direction is parallel to the sixth direction, and / or the fourth direction is parallel to the sixth direction.

7. The display panel according to claim 5, characterized in that, At least two of the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue. Preferably, the first sub-pixel, the second sub-pixel, and the third sub-pixel emit different colors, including red, green, and blue.

8. The display panel according to claim 5, characterized in that, The shape of the first pixel opening projected onto the substrate includes a rectangle, a triangle, and an I-shape; and / or, The shape of the second pixel opening projected onto the substrate includes a rectangle, a triangle, and an I-shape; and / or, The shape of the third pixel opening projected onto the substrate includes a rectangle, a triangle, and an I-shape. Preferably, the first pixel opening, the second pixel opening, and the third pixel opening have the same shape in their orthogonal projections onto the substrate.

9. The display panel according to claim 5, characterized in that, The plurality of pixel openings further includes a fourth pixel opening, and the plurality of sub-pixels further includes a fourth sub-pixel, wherein: The pixel defining portion includes a fourth pixel inner wall facing the opening of the fourth pixel. The fourth pixel inner wall includes a seventh pixel sidewall extending a seventh length along a seventh direction and an eighth pixel sidewall extending an eighth length along an eighth direction. The seventh length is greater than the eighth length. The seventh direction and the eighth direction have an included angle and are both parallel to the substrate. At least a portion of the fourth sub-pixel is located in the opening of the fourth pixel, and the first electrode of the fourth sub-pixel extends from the sidewall of the seventh pixel and overlaps with the isolation structure; Preferably, the first electrode of the fourth sub-pixel extends from the sidewall of the seventh pixel and extends a seventh distance on the isolation structure, the first electrode of the fourth sub-pixel extends from the sidewall of the eighth pixel and extends an eighth distance on the isolation structure, and the seventh distance is greater than the eighth distance; Preferably, the value of the eighth distance is zero; Preferably, the first electrode of the fourth sub-pixel extends from the sidewall of the eighth pixel and is spaced apart from the isolation structure.

10. The display panel according to claim 9, characterized in that, The first direction is parallel to the seventh direction, and / or the second direction is parallel to the eighth direction.

11. The display panel according to claim 9, characterized in that, The fourth sub-pixel emits white light.

12. The display panel according to claim 9, characterized in that, The shape of the fourth pixel opening projected onto the substrate includes a rectangle, a triangle, and an I-shape. Preferably, the first pixel opening, the second pixel opening, the third pixel opening, and the fourth pixel opening have the same shape in their orthogonal projections onto the substrate.

13. A display device, characterized in that, The display device includes the display panel according to any one of claims 1-12.

14. A method for manufacturing a display panel, characterized in that, The manufacturing method includes: A backplate is provided for a first electrode of a sub-pixel to be vapor-deposited. The backplate includes a substrate, a pixel defining layer, and an isolation structure. The pixel defining layer and the isolation structure are disposed on the same side of the substrate. The pixel defining layer has a pixel defining portion and an opening for a pixel to be vaporized defined by the pixel defining portion. The pixel defining portion includes a first inner wall of a pixel facing the opening for a pixel to be vaporized. The first inner wall of a pixel includes a first sidewall extending a first length along a first direction and a second sidewall extending a second length along a second direction. The first length is greater than the second length. The first direction and the second direction have an acute angle between them and are both parallel to the substrate. The isolation structure defines an isolation opening for vaporization, and the isolation opening for vaporization is connected to the corresponding opening for a pixel to be vaporized. A vapor deposition source is provided, with the vapor deposition material outlet of the vapor deposition source facing the back plate for full-surface vapor deposition, and the vapor deposition source is able to translate along a preset direction, which is perpendicular to the first direction and parallel to the substrate.

Images