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

Abstract

This application relates to the field of display technology, and specifically provides a display panel, a display device, and a method for manufacturing the display panel. The display panel includes a substrate and an isolation structure. The isolation structure is located on one side of the substrate and includes a support portion and a crown portion. The crown portion is located on the side of the support portion facing away from the substrate. The side of the support portion facing away from the crown portion is a first surface, and the side of the crown portion facing away from the support portion is a second surface. An isolation opening is provided on the isolation structure. The end of the crown portion near the isolation opening is inclined towards the direction close to the substrate. The isolation opening includes a first opening, a second opening, and a third opening. The distance between the orthographic projection of the end of the first surface near the first opening on the substrate and the orthographic projection of the end of the second surface near the first opening on the substrate is a first length. The distance between the orthographic projection of the end of the first surface near the second opening on the substrate and the orthographic projection of the end of the second surface near the second opening on the substrate is a second length. The distance between the orthographic projection of the end of the first surface near the third opening on the substrate and the orthographic projection of the end of the second surface near the third opening on the substrate is a third length. The first length is not less than the second length, and the second length is not less than the third length.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) and flat panel display devices based on OLED technology are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, low power consumption, thin body, and wide range of applications, becoming the mainstream of display devices.

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

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, embodiments of this application provide a display panel, a display device, and a method for manufacturing a display panel to improve the performance of the display panel.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, a display panel is provided, including a substrate and an isolation structure; the isolation structure is located on one side of the substrate, the isolation structure includes a support portion and a crown portion, the crown portion is located on the side of the support portion facing away from the substrate, the side of the support portion facing away from the crown portion has a first surface, the side of the crown portion facing away from the support portion has a second surface, an isolation opening is provided on the isolation structure, the isolation opening is formed by the support portion and the crown portion, and the end of the crown portion near the isolation opening is inclined towards the direction close to the substrate;

[0007] The isolation opening includes a first opening, a second opening, and a third opening. The distance between the orthographic projection of the end of the first surface near the first opening onto the substrate and the orthographic projection of the end of the second surface near the first opening onto the substrate is a first length; the distance between the orthographic projection of the end of the first surface near the second opening onto the substrate and the orthographic projection of the end of the second surface near the second opening onto the substrate is a second length; the distance between the orthographic projection of the end of the first surface near the third opening onto the substrate and the orthographic projection of the end of the second surface near the third opening onto the substrate is a third length; wherein, the first length is not less than the second length, and the second length is not less than the third length.

[0008] In the display panel provided in this application embodiment, by setting one end of the crown near the isolation opening to be tilted towards the substrate, the obstruction of the isolation opening by the crown to the space below the crown can be reduced, thereby helping to optimize the distribution range of the vapor deposition material in the subsequent vapor deposition process. This allows the film layer prepared by vapor deposition to have a larger distribution area within the isolation opening, resulting in better light emission of the display panel and optimizing the display effect and performance. By adjusting the different orthogonal projection distances of the first and second surfaces on the substrate in different isolation openings, the influence of the pre-etching process on the subsequent vapor deposition process can be improved, the overlap effect between the vapor-deposited film layer and the sidewall of the isolation structure can be improved, and the reliability of the overlap between the subsequent vapor-deposited film layer and the sidewall of the isolation structure can be improved, thus improving the display panel's dark spot problem and enhancing the reliability and performance of the display panel.

[0009] Optionally, the crown portion includes a first sub-portion and a second sub-portion, the second sub-portion being located on the side of the first sub-portion closer to the isolation opening; the end of the first sub-portion facing away from the base is a first end face, the end of the second sub-portion facing away from the base is a second end face, the second end face is inclined relative to the base and the side of the second end face facing away from the base is in contact with the first end face and forms the first surface;

[0010] In the cross-sectional direction perpendicular to the base, the angle between the plane containing the first end face and the plane containing the second end face is an inclination angle, and the inclination angle is an acute angle.

[0011] Optionally, the tilt angle corresponding to the first opening is a first tilt angle, the tilt angle corresponding to the second opening is a second tilt angle, and the tilt angle corresponding to the third opening is a third tilt angle;

[0012] Wherein, the first tilt angle is not greater than the second tilt angle, and the second tilt angle is not greater than the third tilt angle.

[0013] Optionally, the first tilt angle is no greater than 40°, the second tilt angle ranges from 20° to 70°, and the third tilt angle ranges from 50° to 89°.

[0014] Optionally, the first tilt angle, the second tilt angle, and the third tilt angle are the same, the length of the second end face corresponding to the first opening is greater than the length of the second end face corresponding to the second opening, and the length of the second end face corresponding to the second opening is greater than the length of the second end face corresponding to the third opening.

[0015] Optionally, the first sub-part and the second sub-part are an integral structure, and the second sub-part is disposed around the first sub-part.

[0016] Optionally, the display panel further includes a pixel definition layer, which is located between the substrate and the isolation structure. The pixel definition layer has pixel openings, which are opposite to and communicate with the isolation openings.

[0017] Optionally, the display panel further includes:

[0018] The display functional layer is located on the substrate and includes a plurality of light-emitting devices located in the corresponding isolation openings, wherein a portion of the light-emitting devices covers the side of the pixel definition layer facing away from the substrate through the pixel openings;

[0019] An encapsulation layer is located on the side of the isolation structure and the light-emitting device facing away from the substrate, and at least a portion of the encapsulation layer covering the side of the crown closes with the portion covering the light-emitting device.

[0020] Optionally, the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked on the substrate;

[0021] The light-emitting functional layer and the second electrode of each of the light-emitting devices are located within the corresponding isolation opening, and the first electrode of each of the light-emitting devices is located between the pixel definition layer and the substrate. The first electrode is exposed from the corresponding pixel opening and is in contact with the light-emitting functional layer.

[0022] Optionally, the second electrode covers the surface of the light-emitting functional layer facing away from the substrate and overlaps with one end of the support portion near the substrate.

[0023] Optionally, the light-emitting functional layer has a first light-emitting functional layer, a second light-emitting functional layer, and a third light-emitting functional layer with different light-emitting colors;

[0024] Each of the isolation openings is provided with at least one of the first light-emitting functional layer, the second light-emitting functional layer, and the third light-emitting functional layer.

[0025] Optionally, the wavelength of the light emitted from the first light-emitting functional layer is shorter than the wavelength of the light emitted from the second light-emitting functional layer, and the wavelength of the light emitted from the second light-emitting functional layer is shorter than the wavelength of the light emitted from the third light-emitting functional layer.

[0026] Optionally, the emitted light from the first light-emitting functional layer is blue light, the emitted light from the second light-emitting functional layer is green light, and the emitted light from the third light-emitting functional layer is red light.

[0027] Optionally, the encapsulation layer includes:

[0028] The first encapsulation portion is located on the side of the isolation structure facing away from the substrate;

[0029] The second encapsulation part is located on the side of the light-emitting device facing away from the substrate and is connected to the first encapsulation part;

[0030] The second encapsulation portion covers the light-emitting device and at least a portion of the isolation structure is close to the outer wall of the isolation opening.

[0031] Optionally, in a direction perpendicular to the substrate, there is a gap between adjacent first encapsulation portions and the side surface of the crown portion facing away from the substrate.

[0032] Optionally, the encapsulation layer defines a closed chamber on the side of the isolation structure facing the isolation opening.

[0033] Optionally, the orthographic projection of the support portion on the base lies within the orthographic projection of the crown portion on the base.

[0034] Optionally, the support includes at least two stacked sub-supports, wherein the orthographic projection of the sub-support farther from the base onto the base is located within the orthographic projection range of the sub-support closer to the base onto the base.

[0035] Optionally, the orthographic projection of the sub-support portion near the base onto the base is located within the orthographic projection range of the crown portion onto the base.

[0036] Optionally, on the front cross-section of the display panel, the cross-sectional profile of the portion of the support located between two adjacent isolation openings is one of a rectangle, a trapezoid, and an inverted trapezoid.

[0037] In a second aspect, embodiments of this application also provide a method for manufacturing a display panel, comprising:

[0038] Provide a base;

[0039] An isolation structure is fabricated on one side of the substrate. The isolation structure includes a support portion and a crown portion. The crown portion is located on the side of the support portion facing away from the substrate. The side of the support portion facing away from the crown portion has a first surface, and the side of the crown portion facing away from the support portion has a second surface. An isolation opening is formed by the support portion and the crown portion. The end of the crown portion near the isolation opening is inclined towards the substrate. The isolation opening includes a first opening, a second opening, and a third opening. The distance between the orthographic projection of the end of the first surface near the first opening on the substrate and the orthographic projection of the end of the second surface near the first opening on the substrate is a first length. The distance between the orthographic projection of the end of the first surface near the second opening on the substrate and the orthographic projection of the end of the second surface near the second opening on the substrate is a second length. The distance between the orthographic projection of the end of the first surface near the third opening on the substrate and the orthographic projection of the end of the second surface near the third opening on the substrate is a third length.

[0040] Wherein, the first length is not less than the second length, and the second length is not less than the third length.

[0041] In the method for manufacturing a display panel provided in this application embodiment, by adjusting the end of the crown near the isolation opening to tilt towards the direction of the substrate, and by limiting the orthogonal projection distance between the first surface and the second surface in different isolation openings on the substrate, the distribution area of ​​the subsequent vapor deposition film layer can be expanded to a certain extent, reducing the influence of the pre-etching process on the post-evaporation process, thereby improving the poor overlap defects caused by the sidewall of the isolation structure due to etching retreat, and achieving the purpose of improving the display effect and performance of the display panel.

[0042] Optionally, after the step of preparing an isolation structure on one side of the substrate, wherein the isolation structure encloses and forms an isolation opening, the method further includes:

[0043] A light-emitting device is fabricated within the isolation opening, and an encapsulation layer covering the isolation structure is fabricated on the side of the light-emitting device facing away from the substrate.

[0044] Optionally, the step of fabricating a light-emitting device within the isolation opening and fabricating an encapsulation layer covering the isolation structure on the side of the light-emitting device facing away from the substrate includes:

[0045] A display material layer is fabricated on the isolation structure, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device located in the first opening, and an encapsulation layer covering the first opening.

[0046] A display material layer is fabricated on the isolation structure, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device located in the second opening, and an encapsulation layer covering the second opening.

[0047] A display material layer is prepared on the isolation structure, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device located in the third opening, and an encapsulation layer covering the third opening.

[0048] In a third aspect, embodiments of this application also provide a display device, including the display panel described in any of the above claims.

[0049] In the embodiments provided in this application, the display device has the above-described display panel, and therefore has at least the advantages of the above-described display panel. The specific effects are as described above and will not be repeated here.

[0050] The beneficial effects of the display panel, display device, and display panel manufacturing method provided in this application are as follows: Compared with related technologies, the display panel provided in this application can make the light-emitting functional layer and the second electrode located in the isolation opening larger by adjusting the crown shape of the isolation structure, so as to ensure that the second electrode can be effectively overlapped with the sidewall of the isolation structure facing the isolation opening, thereby reducing the display dark spot failure caused by poor overlap of the second electrode; in addition, the above structure can also make the display panel form a larger light-emitting area to optimize the light-emitting effect and performance of the display panel. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 A plan view of the display panel provided in an embodiment of this application;

[0053] Figure 2 This is a cross-sectional structural diagram of area A in a display panel provided in a certain embodiment of this application;

[0054] Figure 3 for Figure 2 Enlarged view of the structure of region B in the middle;

[0055] Figure 4This is a cross-sectional structural diagram of area A in a display panel provided in another embodiment of this application;

[0056] Figure 5 for Figure 4 Enlarged view of the structure of region C;

[0057] Figure 6 This is a flowchart illustrating the method for manufacturing a display panel as provided in an embodiment of this application.

[0058] Figure 7 A simplified structural diagram of the display device provided in the embodiments of this application.

[0059] The following are the labeling elements in the figure:

[0060] 1. Substrate; 2. Isolation structure; 201. Isolation opening; 201a. First opening; 201b. Second opening; 201c. Third opening; 202. First surface; 203. Second surface; 21. Support portion; 211. Sub-support portion; 22. Crown portion; 221. First sub-part; 2211. First end face; 222. Second sub-part; 2221. Second end face; 3. Pixel definition layer; 301. Pixel opening; 4. Light-emitting device; 41. First electrode; 42. Light-emitting functional layer; 42a. First light-emitting functional layer; 42b. Second light-emitting functional layer; 42c. Third light-emitting functional layer; 43. Second electrode; 5. Encapsulation layer; 51. First encapsulation portion; 52. Second encapsulation portion;

[0061] 10. Display panel; 100. Display device; S. Closed chamber. Detailed Implementation

[0062] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0063] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0064] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of transverse planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0070] In the process of developing this application, the inventors discovered the following problem in the related technology: some pixel units have display abnormalities, which to some extent affect the display effect of the display panel 10 and ultimately affect its performance.

[0071] Based on this, this application provides a display panel 10 to at least alleviate or improve the above-mentioned technical problems and improve the reliability of the display panel 10.

[0072] Please see Figures 1-3 The display panel 10 provided in this embodiment includes a substrate 1 and an isolation structure 2; wherein the isolation structure 2 is located on the substrate 1 and has an isolation opening 201, the isolation structure 2 includes a support portion 21 and a crown portion 22, the crown portion 22 being located on the side of the support portion 21 facing away from the substrate 1. The isolation opening 201 is formed by the support portion 21 and the crown portion 22.

[0073] The isolation structure 2 mentioned below is further described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0074] Please see Figures 2-3 The support portion 21 of the isolation structure 2 has a first surface 202 on the side opposite to the crown portion 22, and the crown portion 22 of the isolation structure 2 has a second surface 203 on the side opposite to the support portion 21. The orthographic projection area of ​​the crown portion 22 on the base 1 is equivalent to the orthographic projection area of ​​the second surface 203 on the base 1, and the orthographic projection area of ​​the support portion 21 on the base 1 is equivalent to the orthographic projection area of ​​the first surface 202 on the base 1.

[0075] Among them, the end of the crown 22 near the isolation opening 201 is inclined toward the direction of the base 1 relative to the area above the connecting part, so as to reduce the orthographic projection area of ​​the crown 22 on the base 1 within a certain range. At this time, the outer contour range of the orthographic projection area of ​​the crown 22 on the base 1 is reduced to a certain extent.

[0076] The isolation opening 201 includes a first opening 201a, a second opening 201b, and a third opening 201c. The above three types of isolation openings 201 can be classified according to the fabrication sequence of the light-emitting device 4.

[0077] Specifically, the distance between the orthographic projection of the end of the first surface 202 near the first opening 201a onto the substrate 1 and the orthographic projection of the end of the second surface 203 near the first opening 201a onto the substrate 1 is a first length; the distance between the orthographic projection of the end of the first surface 202 near the second opening 201b onto the substrate 1 and the orthographic projection of the end of the second surface 203 near the second opening 201b onto the substrate 1 is a second length; the distance between the orthographic projection of the end of the first surface 202 near the third opening 201c onto the substrate 1 and the orthographic projection of the end of the second surface 203 near the third opening 201c onto the substrate 1 is a third length. The first length is not less than the second length, and the second length L2 is not less than the third length.

[0078] With the overall dimensions of the crown 22 remaining unchanged, the orthographic projection area of ​​the crown 22 on the base 1 is reduced (i.e. Figure 3 The area indicated by d in the middle can reduce the obstruction range of the crown 22 on the vapor-deposited film layer in the subsequent process, and make the film layer prepared by the vapor deposition process have a larger distribution area within the isolation opening 201, thereby improving the light emission effect of the display panel 10 and optimizing the display effect and performance of the display panel 10. In addition, the above structure can also improve the overlap effect between the film layer prepared by the subsequent vapor deposition process and the sidewall of the isolation structure 2, improve the overlap reliability between the vapor-deposited film layer and the sidewall of the isolation structure 2, improve the display dark spot problem of the display panel 10, and improve the reliability and performance of the display panel 10.

[0079] During the subsequent vapor deposition process, the distribution area of ​​the vapor-deposited film structure within the isolation opening 201 is affected by the obstruction of the crown 22. With the obstruction area of ​​the crown 22 reduced, the distribution area of ​​the vapor-deposited film within the isolation opening 201 can be increased, thereby allowing the vapor-deposited film within the isolation opening 201 to better overlap with the sidewall of the isolation structure 2 near the isolation opening 201.

[0080] Please see Figure 2 and Figure 3 The crown portion 22 includes a first sub-portion 221 and a second sub-portion 222, wherein the second sub-portion 222 is located on the side of the first sub-portion 221 near the isolation opening 201.

[0081] Specifically, when an isolation opening 201 is provided on one side of the crown portion 22, the second sub-part 222 is located on the side of the first sub-part 221 near the isolation opening 201; when isolation openings 201 are provided on both opposite sides of the crown portion 22, the second sub-part 222 is formed on both opposite sides of the first sub-part 221; when isolation openings 201 are provided on all sides of the crown portion 22, the second sub-part 222 is arranged around the first sub-part 221.

[0082] Please see Figure 2 and Figure 3 The first sub-part 221 is a first end face 2211 facing away from the base 1, and the second sub-part 222 is a second end face 2221 facing away from the base 1. The second end face 2221 is inclined relative to the base 1, and the side of the second end face 2221 facing away from the base 1 is connected to the first end face 2211 and forms the first surface 202 mentioned above.

[0083] In the cross-sectional direction perpendicular to the substrate 1, i.e., the orthogonal cross-sectional direction of the display panel 10, the second sub-part 222 is inclined toward the side closer to the substrate 1 relative to the first sub-part 221. Without changing the dimensions of the second sub-part 222, setting it to be inclined toward the side closer to the substrate 1 relative to the first sub-part 221 reduces the orthogonal projection area of ​​the second sub-part 222 on the substrate 1, thereby reducing the projected area of ​​the crown 22 and improving the distribution area and range of the film layer prepared in subsequent vapor deposition processes.

[0084] Please see Figure 2 and Figure 3 The orthographic projection of the support portion 21 on the base 1 lies within the orthographic projection of the crown portion 22 on the base 1. At this time, the end of the crown portion 22 near the isolation opening 201 can tilt downwards without contacting the support portion 21.

[0085] Specifically, the crown portion 22 includes a first sub-part 221 and a second sub-part 222, and the first sub-part 221 and the second sub-part 222 are an integral structure.

[0086] Specifically, on the front cross-section of the display panel 10, the cross-sectional profile of the portion of the support 21 located between two adjacent isolation openings 201 is one of a rectangle, a trapezoid, and an inverted trapezoid.

[0087] At least a portion of the support portion 21 is a conductive structure, particularly only one side of the substrate 1. In some embodiments, the support portion 21 is a single-layer structure, while in other embodiments, the support portion 21 may be a multi-layer structure.

[0088] When the support portion 21 has a multi-layer structure, it can be configured to include at least two stacked sub-support portions 211. The orthographic projection of the sub-support portion 211 furthest from the base 1 onto the base 1 is located within the orthographic projection range of the sub-support portion 211 closest to the base 1 onto the base 1.

[0089] The film layer obtained by the above vapor deposition can overlap with the sub-support 211 near the substrate 1, or it can overlap with two sub-supports 211 simultaneously. This film layer can be an electrode.

[0090] Please see Figure 3 The support portion 21 in the figure is made of two sub-support portions 211 that are rectangular or trapezoidal in shape. The sub-support portion 211 near the base 1 is relatively thin, while the sub-support portion 211 near the crown 22 is relatively thick.

[0091] Specifically, the orthographic projection of the sub-support portion 211 near the base 1 onto the base 1 is within the orthographic projection range of the crown portion 22 onto the base 1.

[0092] In some embodiments, the sidewall of the sub-support portion 211 that is far from the base 1 and faces the isolation opening 201 is offset in a direction away from the isolation opening 201 relative to the sidewall of the sub-support portion 211 that is close to the base 1, so that the cross-sectional sidewall of the isolation structure 2 presents a shape similar to an eaves / hat brim.

[0093] Of course, in other similar embodiments, the size and projection relationship between the sub-supports 211 and crown 22 stacked in sequence can also be adapted to actual processing needs.

[0094] In some embodiments, the sub-support portion 211 and the crown portion 22 may be integrally formed or may be formed by stacking different materials.

[0095] Specifically, the material of the crown 22 includes titanium metal, forming a titanium metal layer; the material of the sub-support 211 that is in contact with the crown 22 includes aluminum metal, forming an aluminum metal layer; and the material of the sub-support 211 that is close to the substrate 1 includes molybdenum metal, forming a molybdenum metal layer.

[0096] Please see Figure 3 The surface of the first sub-part 221 facing away from the base 1 is the first end face 2211, and the surface of the second sub-part 222 facing away from the base 1 is the second end face 2221. The angle between the plane containing the first end face 2211 and the plane containing the second end face 2221 is the inclination angle θ, and the inclination angle θ is an acute angle.

[0097] It should be noted that the tilt angle of the crown 22 toward the base 1 can be adjusted according to actual processing needs.

[0098] In some embodiments, the second sub-parts 222 of all crowns 22 can be set to have the same size. In this case, the angle at which the second sub-parts 222 of all crowns 22 tilt toward the base 1 can be set to be the same, or the angle at which some crowns 22 tilt toward the base 1 can be set to be different.

[0099] In some embodiments, the isolation openings 201 can be classified according to the order in which the relevant membrane layers are prepared within the relevant isolation openings 201.

[0100] For details, please refer to Figure 2 The isolation opening 201 includes three different types corresponding to different graphical sequences: a first opening 201a, a second opening 201b, and a third opening 201c. The tilt angle corresponding to the first opening 201a is the first tilt angle, the tilt angle corresponding to the second opening 201b is the second tilt angle, and the tilt angle corresponding to the third opening 201c is the third tilt angle; wherein, the first tilt angle is not greater than the second tilt angle, and the second tilt angle is not greater than the third tilt angle.

[0101] In some embodiments, the opening shapes corresponding to the first opening 201a, the second opening 201b, and the third opening 201c are all the same. In this case, the first tilt angle, the second tilt angle, and the third tilt angle are consistent. Correspondingly, the size of the orthographic projection of the second sub-part 222 of the crown 22 onto the base 1 (i.e., Figure 3 (The size indicated by d in the text) remains consistent.

[0102] In other similar embodiments, when the shapes of the openings corresponding to the first opening 201a, the second opening 201b, and the third opening 201c are different, and the angles of the first tilt angle, the second tilt angle, and the third tilt angle are different, the first tilt angle is not greater than the second tilt angle, the second tilt angle is not greater than the third tilt angle, and correspondingly, the orthographic projection size of the second sub-part 222 of the crown 22 on the base 1 is also different. The orthographic projection size of the second sub-part 222 corresponding to the first opening 201a on the base 1 is defined as d1, the orthographic projection size of the second sub-part 222 corresponding to the second opening 201b on the base 1 is defined as d2, and the orthographic projection size of the second sub-part 222 corresponding to the third opening 201c on the base 1 is defined as d3, where d1 is not greater than d2, and d2 is not greater than d3.

[0103] Specifically, the first opening 201a, the second opening 201b, and the third opening 201c are evenly distributed in different regions of the isolation structure 2 according to a certain pattern. The periphery of the first opening 201a may contain any one or more of the first opening 201a, second opening 201b, and third opening 201c. That is, two adjacent isolation openings 201 may be of the same type or different types. Therefore, the degree of inclination (including the inclination angle and the size of the inclination portion) of the crown 22 of the isolation structure 2 located between two adjacent isolation openings 201 towards the base 1 may be the same or may differ to some extent.

[0104] Therefore, d1 can be understood as defining the orthographic projection size of the second sub-part 222 on the substrate 1 corresponding to the side of the first opening 201a of the isolation structure 2 forming the first opening 201a; d2 can be understood as defining the orthographic projection size of the second sub-part 222 on the side of the second opening 201b of the isolation structure 2 forming the second opening 201b of the isolation structure 2 forming the third opening 201c ...

[0105] Please see Figure 2The three isolation openings 201 arranged at intervals in the figure are the first opening 201a, the second opening 201b and the third opening 201c. The angle value of the first tilt angle corresponding to the first opening 201a is not greater than the angle value of the second tilt angle corresponding to the second opening 201b, and the angle value of the second tilt angle is not greater than the angle value of the third tilt angle corresponding to the third opening 201c.

[0106] Specifically, the first tilt angle ≤ the second tilt angle ≤ the third tilt angle.

[0107] In some embodiments, the first tilt angle can be set to no more than 40°, and its specific value range can be adjusted as needed. For example, the angle value of the first tilt angle can be any value among 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0108] Similarly, the range of the second tilt angle can be set to 20° to 70°, and the specific value range can be adjusted according to actual needs. For example, the angle can be any value among 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0109] Similarly, the third tilt angle ranges from 50° to 89°, and its specific value can be adjusted according to actual needs. For example, this angle can be any value among 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, and 89°. It should be noted that the first tilt angle should not be greater than the second tilt angle, and the influence of the second tilt angle should not be greater than that of the third tilt angle.

[0110] In other similar embodiments, the second sub-parts 222 of some crowns 22 may be configured to have different dimensions than the second sub-parts 222 of other crowns 22. In this case, the angle of inclination of the second sub-parts 222 of different crowns 22 toward the substrate 1 can be flexibly adjusted as needed to ensure that the distribution range of the prepared vapor-deposited film layer meets the design requirements.

[0111] Specifically, in some embodiments, the first tilt angle, the second tilt angle, and the third tilt angle can be set to be the same. In this case, the length of the second end face 2221 corresponding to the first opening 201a is adjusted to be greater than the length of the second end face 2221 corresponding to the second opening 201b, and the length of the second end face 2221 corresponding to the second opening 201b is greater than the length of the second end face 2221 corresponding to the third opening 201c, so that the first length is greater than the second length, and the second length is greater than the third length.

[0112] Please see Figure 2The display panel 10 provided in this application embodiment also includes a pixel definition layer 3, which is located on one side of the substrate 1 and is partially covered by the isolation structure 2.

[0113] The pixel definition layer 3 is located between the substrate 1 and the isolation structure 2, and a pixel opening 301 is provided on it. The pixel opening 301 is positioned opposite to and connected to the isolation opening 201.

[0114] The pixel definition layer 3 is an inorganic layer that can be used to define the pixel range, ensuring that each pixel is independent of the others. It can also block moisture in the substrate 1 and prevent external factors such as water and oxygen from eroding the relevant film layer on the side of the pixel definition part facing away from the substrate 1.

[0115] The projected area of ​​the pixel opening 301 on the substrate 1 and the projected area of ​​the crown 22 on the substrate 1 are alternately arranged.

[0116] Please see Figure 4 and Figure 5 The display panel 10 provided in this application embodiment also includes a display function layer and an encapsulation layer 5.

[0117] Specifically, the display functional layer is located on the substrate 1 and includes a plurality of light-emitting devices 4 located in corresponding isolation openings 201. The encapsulation layer 5 is located on the side of the isolation structure 2 and the light-emitting devices 4 facing away from the substrate 1. At least part of the encapsulation layer 5 covers the area on the side of the crown 22 and is in contact with the area covering the light-emitting devices 4 and remains closed.

[0118] In some embodiments, the encapsulation layer 5 can be prepared using chemical vapor deposition (CVD) technology, which can deposit a relatively uniform and dense thin film on the surface of the substrate (i.e., the substrate 1 having the above-mentioned isolation structure 2 and light-emitting device 4) through a chemical reaction to achieve encapsulation and protection of the display panel 10 device.

[0119] The aforementioned encapsulation layer 5 may include at least one of organic and inorganic materials.

[0120] The aforementioned encapsulation layer 5 is used to cover the side of the isolation structure 2 facing away from the substrate 1, and to cover the side of the light-emitting device 4 facing away from the substrate 1. Each light-emitting device 4 is arranged corresponding to the isolation opening 201, which can be used to limit the corresponding light-emitting device 4.

[0121] Specifically, the light-emitting device 4 has a multi-layer structure, in which part of the film layer can cover the side of the pixel definition layer 3 facing away from the substrate 1 through the pixel opening 301, and part of the film layer is located between the pixel opening 301 and the substrate 1.

[0122] Please see Figure 5The light-emitting device 4 includes a first electrode 41, a light-emitting functional layer 42, and a second electrode 43 stacked sequentially on the substrate 1. The light-emitting functional layer 42 and the second electrode 43 of each light-emitting device 4 are located in the corresponding isolation opening 201. The second electrode 43 is located on the side of the light-emitting functional layer 42 facing away from the substrate 1 and covers the light-emitting functional layer 42. The first electrode 41 of each light-emitting device 4 is located on the substrate 1 and on the side of the pixel definition layer 3 facing the substrate 1. The first electrode 41 is exposed from the corresponding pixel opening 301 and is in contact with the light-emitting functional layer 42.

[0123] It should be noted that the orthographic projection of the light-emitting functional layer 42 on the substrate 1 is located within the orthographic projection range of the second electrode 43 on the substrate 1. At this time, the second electrode 43 can overlap with the end of the support 21 near the substrate 1. Meanwhile, the orthographic projection of the light-emitting functional layer 42 on the substrate 1 and the orthographic projection of the support 21 on the substrate 1 are spaced apart.

[0124] In some embodiments, the first electrode 41 is one of an anode and a cathode, and the second electrode 43 is the other. The second electrode 43, located within the isolation opening 201, needs to be connected to the conductive isolation structure 2.

[0125] Specifically, the sub-support portion 211 on the side of the isolation structure 2 near the substrate 1 is configured as a conductive structure, and the second electrode 43 overlaps with the sidewall of the sub-support portion 211 facing the isolation opening 201. Alternatively, multiple sub-support portions 211 arranged in layers can all be configured as conductive structures, in which case the second electrode 43 can overlap with the sidewall of the multiple sub-support portions 211 facing the isolation opening 201.

[0126] The orthographic projection of the second electrode 43 on the substrate 1 coincides with the orthographic projection of the support portion 21 in the isolation structure 2 on the substrate 1.

[0127] The light-emitting functional layer 42 can be processed from organic small molecule light-emitting materials, complex light-emitting materials, and polymers. Different light-emitting functional layers 42 can be used to emit different colors of light. Generally, the light-emitting functional layer 42 includes three types, which are used to emit red, green, and blue light respectively under the condition of electricity.

[0128] Specifically, the aforementioned light-emitting functional layer 42 has a first light-emitting functional layer 42a, a second light-emitting functional layer 42b, and a third light-emitting functional layer 42c with different light-emitting colors. The wavelength of the light emitted from the first light-emitting functional layer 42a is shorter than the wavelength of the light emitted from the second light-emitting functional layer 42b, and the wavelength of the light emitted from the second light-emitting functional layer 42b is shorter than the wavelength of the light emitted from the third light-emitting functional layer 42c.

[0129] Specifically, the emitted light from the first light-emitting functional layer 42a is blue light, the emitted light from the second light-emitting functional layer 42b is green light, and the emitted light from the third light-emitting functional layer 42c is red light.

[0130] Each isolation opening 201 is provided with at least one of the above-mentioned first light-emitting functional layer 42a, second light-emitting functional layer 42b and third light-emitting functional layer 42c.

[0131] Please see Figure 4 and Figure 5 Each of the aforementioned isolation openings 201 contains only one of the following: a first light-emitting functional layer 42a, a second light-emitting functional layer 42b, and a third light-emitting functional layer 42c. When fabricating the light-emitting device 4 within each isolation opening 201, it is only necessary to ensure that the emitted light color of the light-emitting device 4 within the same type of isolation opening 201 is consistent under energized conditions.

[0132] In some embodiments, a first light-emitting functional layer 42a is provided in the first opening 201a, a second light-emitting functional layer 42b is provided in the second opening 201b, and a third light-emitting functional layer 42c is provided in the third opening 201c. Of course, the correspondence between each isolation opening 201 and each light-emitting functional layer 42 can be adaptively adjusted according to actual processing needs. This embodiment only provides one example.

[0133] When fabricating the display panel 10, the light-emitting device 4 and the encapsulation layer 5 can be fabricated sequentially within the corresponding first opening 201a, second opening 201b, and third opening 201c in the order of the first light-emitting functional layer 42a, the second light-emitting functional layer 42b, and the third light-emitting functional layer 42c. During the fabrication process, the fabrication of the front light-emitting device 4 will etch the sidewall of the isolation structure 2 facing the isolation opening 201 where the corresponding light-emitting device 4 has not been fabricated, causing the relevant sidewall to recede.

[0134] Specifically, during the fabrication of the light-emitting device 4 within the first opening 201a, the relevant films deposited into the second opening 201b and the third opening 201c need to be removed by etching. This step further etches the sidewalls of the second opening 201b and the third opening 201c, causing some sidewalls of the isolation structure 2 to recede away from the isolation opening 201, especially the sidewall of the sub-support portion 211 connected to the crown portion 22. Similarly, during the fabrication of the light-emitting device 4 within the second opening 201b, the relevant films deposited into the first opening 201a and the third opening 201c need to be removed by etching. This process further etches the isolation at the third opening 201c, causing the sidewall of the isolation structure 2 opposite to the third opening 201c to recede further away from the third opening 201c.

[0135] Therefore, without changing the deposition range of the second electrode 43 in the subsequent process, the above process will result in a defect of poor overlap between the second electrode 43 prepared in the subsequent process and the sidewall of the isolation structure 2, which will lead to dark spot failure and reduce the reliability and performance of the display panel 10.

[0136] When the crown 22 is tilted at one end near the isolation opening 201, the obstruction and separation effect of the crown 22 on the vapor-deposited second electrode 43 can be reduced, making the area of ​​the second electrode 43 prepared in the corresponding isolation opening 201 larger, thus making it easier to overlap with the sidewall of the isolation structure 2 and reducing the probability of pixel dark spot failure.

[0137] Specifically, in some embodiments, in order to make the light-emitting device 4 obtained by the post-processing have a larger evaporation range, the crown 22 on the second opening 201b and / or the third opening 201c corresponding to the post-processing can be set to have a larger tilt angle.

[0138] The greater the tilt angle, the larger the vapor deposition range of the second electrode 43 opposite to the opening.

[0139] In this embodiment, the third tilt angle can be set to be greater than the second tilt angle, and the second tilt angle can be set to be greater than the first tilt angle, so that the vapor deposition range of the subsequent process is greater than the vapor deposition range of the preceding process.

[0140] A larger vapor deposition range in the post-processing can improve the distribution area of ​​the second electrode 43 prepared by vapor deposition, and reduce the difficulty of overlapping the second electrode 43 with the sidewall of the isolation structure 2, thereby improving the dark spot problem of the display panel 10 and improving the reliability and performance of the display panel 10.

[0141] After the light-emitting device 4 is fabricated, the encapsulation layer 5 covers the light-emitting device 4 and the corresponding isolation opening 201 to achieve encapsulation and protection of the light-emitting device 4 and the isolation opening 201.

[0142] In some embodiments, the encapsulation layer 5 includes a first encapsulation portion 51 and a second encapsulation portion 52. The first encapsulation portion 51 is located on the side of the isolation structure 2 facing away from the substrate 1 and forms a continuous film layer with the second encapsulation portion 52.

[0143] The second encapsulation portion 52 is located on the side of the light-emitting device 4 facing away from the substrate 1, and extends along the sidewall of the isolation structure 2 toward the isolation opening 201 to be connected to the first encapsulation portion 51.

[0144] Specifically, in the direction perpendicular to the base 1, there is a gap between the adjacent first encapsulation portion 51 and the side surface of the crown portion 22 facing away from the base 1.

[0145] Please see Figure 5There is a gap between the first encapsulation part 51 and the first end face 2211, and there is a gap between the first encapsulation part 51 and the second end face 2221; the second encapsulation part 52 covers the side of the light-emitting device 4 facing away from the substrate 1, and covers at least part of the outer wall of the isolation structure 2 near the isolation opening 201.

[0146] Specifically, the second encapsulation layer 5 located within the isolation opening 201 defines a closed chamber S.

[0147] Please see Figure 4 and Figure 5 During the fabrication of the encapsulation layer 5, the film thickness of the encapsulation layer 5 gradually increases. Due to the shape of the isolation opening 201, as the portion of the second encapsulation layer 5 used to cover the side of the crown 22 and the portion covering the side of the light-emitting device 4 facing away from the substrate 1 gradually grows and thickens, the space between the lower part of the second sub-part 222 and the upper part of the second electrode 43 can be enclosed by the gradually thickening second encapsulation layer 5, thus defining a closed chamber S that remains sealed from the external environment.

[0148] Please see Figure 5 The aforementioned closed chamber S is formed by the folding and connection of the second encapsulation portion 52. The folded contact portion of the second encapsulation portion 52 is defined as the closed area, which is represented by dashed lines in the figure.

[0149] Provided that the deposition time remains consistent, the earlier the second encapsulation part 52 comes into contact during the deposition preparation process, the longer the width of the closed area in the final second encapsulation part 52 will be.

[0150] The timing of contact between the second encapsulation portions 52 during the deposition process is limited by the tilt angle of the second sub-portion 222. The larger the tilt angle of the second sub-portion 222, the earlier the contact occurs, and the longer the width of the closed area formed on the second encapsulation portion 52.

[0151] Define the width of the closed region within the first opening 201a as L1, the width of the closed region within the second opening 201b as L2, and the width of the closed region within the third opening 201c as L3.

[0152] The dimensional relationships between the first opening 201a, the second opening 201b, and the third opening 201c are described above and will not be repeated here.

[0153] When the opening shapes corresponding to the first opening 201a, the second opening 201b, and the third opening 201c are all the same, under the premise of the same manufacturing process, the dimensions of L1, L2, and L3 formed in different isolation openings 201 are basically the same (due to the influence of processing technology and errors, there may be some inconsistency).

[0154] When the relationship between the three different tilt angles corresponding to the first opening 201a, the second opening 201b, and the third opening 201c satisfies the following condition: first tilt angle ≤ second tilt angle ≤ third tilt angle, then L3 ≥ L2 ≥ L1. That is to say, the larger the tilt angle of the first sub-part 221, the larger the width of the corresponding closed area.

[0155] It should be noted that, due to manufacturing errors, the relationship between the width of the closed area and the tilt angle of the first sub-part 221 may not strictly follow a direct proportional relationship or other mathematical relationships. The above description only represents the trend of the width of the closed area.

[0156] Similarly, the size of the closed chamber S formed within the second encapsulation portion 52 is also related to the tilt angle of the second sub-portion 222. Assuming the size of the second sub-portion 222 remains consistent, the larger its tilt angle, the earlier the second encapsulation portion 52 is folded, and the smaller the space of the resulting closed chamber S.

[0157] It should be noted that, due to manufacturing errors, the relationship between the spatial dimensions of the closed chamber SS and the tilt angle of the second sub-part 222 may not strictly follow a direct proportional relationship or other mathematical relationships. The above description only represents the dimensional variation trend of the closed chamber SS.

[0158] In this embodiment or other similar embodiments, the encapsulation layer 5 on the side facing away from the substrate 1 is further provided with at least one of the following film layer structures: a planarization layer, an organic encapsulation film layer, an inorganic encapsulation film layer, a touch layer, an organic adhesive layer, and a cover plate.

[0159] Taking the planarization layer as an example, the material of the planarization layer may include at least one of organic materials and inorganic materials. For example, organic polymers (such as polyimide, acrylic resin, etc.) or inorganic materials (such as silicon oxide, silicon nitride, etc.).

[0160] The planarization layer made of organic materials can be prepared using techniques such as IJP (Ink-Jet Printing). A portion of the planarization layer flows into the aforementioned isolation opening 201, improving the flatness of the display panel 10 by filling the opening and providing some protection to the underlying film layers. Other portions of the planarization layer can cover the aforementioned first encapsulation portion 51 and fill the gap between the first encapsulation portion 51 and the isolation structure 2. The final planarization layer has a flat surface on the side facing away from the substrate 1.

[0161] It is understood that the display panel 10 provided in this application embodiment can have a larger area for the light-emitting functional layer 42 and the second electrode 43 located in the isolation opening 201 by adjusting the shape of the crown 22 of the isolation structure 2. This ensures that the second electrode 43 can effectively overlap with the sidewall of the isolation structure 2 facing the isolation opening 201, reducing display dark spot failures caused by poor overlap of the second electrode 43 in the display panel 10. In addition, the above structure can also enable the display panel 10 to form a larger light-emitting area, thereby optimizing the light-emitting effect and performance of the display panel 10.

[0162] In a second aspect, embodiments of this application also provide a method for manufacturing a display panel 10, comprising:

[0163] Provide substrate 1;

[0164] An isolation structure 2 is fabricated on one side of a substrate 1. The isolation structure 2 includes a stacked support portion 21 and a crown portion 22. The crown portion 22 is located on the side of the support portion 21 facing away from the substrate 1. The side of the support portion 21 facing away from the crown portion 22 has a first surface 202, and the side of the crown portion 22 facing away from the support portion 21 has a second surface 203. An isolation opening 201 is formed by the support portion 21 and the crown portion 22. The end of the crown portion 22 near the isolation opening 201 is inclined towards the direction close to the substrate 1. The isolation opening 201 includes a first opening 201a, a second opening 201b, and a third opening 201a. 1c, the distance between the orthographic projection of the end of the first surface 202 near the first opening 201a on the substrate 1 and the orthographic projection of the end of the second surface 203 near the first opening 201a on the substrate 1 is a first length; the distance between the orthographic projection of the end of the first surface 202 near the second opening 201b on the substrate 1 and the orthographic projection of the end of the second surface 203 near the second opening 201b on the substrate 1 is a second length; the distance between the orthographic projection of the end of the first surface 202 near the third opening 201c on the substrate 1 and the orthographic projection of the end of the second surface 203 near the third opening 201c on the substrate 1 is a third length;

[0165] The first length is not less than the second length, and the second length is not less than the third length.

[0166] In the manufacturing method of the display panel 10 provided in this application embodiment, by adjusting the end of the crown 22 near the isolation opening 201 to tilt towards the direction of the substrate 1, and at the same time limiting the orthogonal projection distance between the first surface and the second surface in different isolation openings on the substrate, the distribution area of ​​the subsequent vapor deposition film layer can be expanded to a certain extent, reducing the influence of the pre-etching process on the post-evaporation process, so as to improve the poor overlap defect caused by the sidewall of the isolation structure 2 due to the etching retreat, and achieve the purpose of improving the display effect and performance of the display panel 10.

[0167] In some embodiments, after the step of fabricating an isolation structure 2 on one side of the substrate 1, and the isolation structure 2 enclosing and forming the isolation opening 201, the method further includes:

[0168] A light-emitting device 4 is fabricated within the isolation opening 201, and an encapsulation layer 5 covering the isolation structure 2 is fabricated on the side of the light-emitting device 4 facing away from the substrate 1.

[0169] At least one light-emitting device 4 is provided in any isolation opening 201.

[0170] The above-mentioned fabrication of a light-emitting device 4 within the isolation opening 201, and the fabrication of an encapsulation layer 5 covering the isolation structure 2 on the side of the light-emitting device 4 facing away from the substrate 1, includes:

[0171] A display material layer is prepared on the isolation structure 2, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the first opening 201a, and an encapsulation layer 5 covering the first opening 201a.

[0172] A display material layer is prepared on the isolation structure 2, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the second opening 201b, and an encapsulation layer 5 covering the second opening 201b.

[0173] A display material layer is prepared on the isolation structure 2, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the third opening 201c, and an encapsulation layer 5 covering the third opening 201c.

[0174] Specifically, the fabrication of the light-emitting device 4 located within the first opening 201a includes the following steps:

[0175] After the display material layer and the encapsulation layer 5 are prepared on the display panel 10 by means of evaporation and CVD deposition, the first opening 201a and the encapsulation layer 5 covering the surrounding isolation structure 2 are covered with photoresist for protection. Then, the encapsulation layer 5 and the display material layer not covered by photoresist are removed by etching patterning. Then, the photoresist is removed to realize the fabrication of the light-emitting device 4 and the encapsulation layer 5 covering the light-emitting device 4 and the first opening 201a within the first opening 201a.

[0176] Repeat the above process to fabricate the light-emitting device 4 and the encapsulation layer 5 in the second opening 201b and the third opening 201c, respectively.

[0177] Please refer to the flowchart of the manufacturing method of the display panel 10 provided in this application embodiment. Figure 6 The preparation method includes:

[0178] Step S1: An isolation structure 2 is prepared on one side of the substrate 1. The isolation structure 2 encloses and forms an isolation opening 201. The isolation structure 2 includes a support portion 21 and a crown portion 22. The crown portion 22 is located on the side of the support portion 21 facing away from the substrate 1, and at least a portion of the crown portion 22 is inclined towards the substrate 1 at the end near the isolation opening 201. The side of the support portion 21 facing away from the crown portion 22 has a first surface 202, and the side of the crown portion 22 facing away from the support portion 21 has a second surface 203. The isolation opening 201 includes a first opening 201a, a second opening 201b, and a third opening 201c. The end of the first surface 202 near the first opening 201a is on the substrate. The distance between the orthographic projection of the first surface 202 on the substrate 1 and the orthographic projection of the second surface 203 on the substrate 1 near the first opening 201a is the first length; the distance between the orthographic projection of the first surface 202 on the substrate 1 near the second opening 201b and the orthographic projection of the second surface 203 on the substrate 1 near the second opening 201b is the second length; the distance between the orthographic projection of the first surface 202 on the substrate 1 near the third opening 201c and the orthographic projection of the second surface 203 on the substrate 1 near the third opening 201c is the third length; wherein, the first length is not less than the second length, and the second length is not less than the third length.

[0179] Step S2: Prepare a light-emitting device 4 within the isolation opening 201, and prepare an encapsulation layer 5 covering the isolation structure 2 on the side of the light-emitting device 4 facing away from the substrate 1.

[0180] The aforementioned light-emitting device 4 includes a first electrode 41, a light-emitting functional layer 42, and a second electrode 43, wherein the light-emitting functional layer 42 has a first light-emitting functional layer 42a, a second light-emitting functional layer 42b, and a third light-emitting functional layer 42c with different light-emitting colors.

[0181] In some embodiments, the wavelength of the light emitted from the first light-emitting functional layer 42a is less than the wavelength of the light emitted from the second light-emitting functional layer 42b, and the wavelength of the light emitted from the second light-emitting functional layer 42b is less than the wavelength of the light emitted from the third light-emitting functional layer 42c.

[0182] Specifically, the emitted light from the first light-emitting functional layer 42a is blue light, the emitted light from the second light-emitting functional layer 42b is green light, and the emitted light from the third light-emitting functional layer 42c is red light.

[0183] Correspondingly, the light-emitting device 4 also includes a first light-emitting device, a second light-emitting device, and a third light-emitting device with different emission colors. When fabricating the light-emitting device 4 into different isolation openings 201, light-emitting devices 4 with different emission colors can be selected sequentially for fabrication according to design requirements.

[0184] In some embodiments, step S2 includes:

[0185] Step S21: Prepare a first display material layer on the isolation structure 2, form an encapsulation material layer on the side of the first display material layer facing away from the substrate 1, etch and pattern the encapsulation material layer and the first display material layer to form a first light-emitting device located in the first opening 201a, and an encapsulation layer 5 covering the first opening 201a.

[0186] Step S22: Prepare a second display material layer on the isolation structure 2, form an encapsulation material layer on the side of the second display material layer facing away from the substrate 1, etch and pattern the encapsulation material layer and the second display material layer to form a second light-emitting device located in the second opening 201b, and an encapsulation layer 5 covering the second opening 201b.

[0187] Step S23: Prepare a third display material layer on the isolation structure 2, form an encapsulation material layer on the side of the third display material layer facing away from the substrate 1, etch and pattern the encapsulation material layer and the third display material layer to form a third light-emitting device located in the third opening 201c, and an encapsulation layer 5 covering the third opening 201c.

[0188] It should be noted that the fabrication order of the light-emitting devices 4 within each isolation opening 201 in step S2 above is determined by the orthographic projection distance between the first surface 202 and the second surface 203 on the side closest to the isolation opening 201, as described above. Specifically, as the distance decreases, the light-emitting devices 4 are fabricated sequentially within the corresponding isolation opening 201.

[0189] This preparation method can be used to prepare the display panel 10 provided in the above embodiments. Other structures of the display panel 10 can refer to the above description and will not be repeated here.

[0190] It is understood that the method for manufacturing the display panel 10 provided in this application embodiment can increase the coverage area of ​​the second electrode 43 obtained by the subsequent process by adjusting the shape of the crown 22 to make it tilt and by adjusting different tilt angles of the crown 22, thereby improving the overlap yield between the second electrode 43 and the sidewall of the isolation structure 2, reducing the dark spot failure caused by poor overlap of the second electrode 43 in the display panel 10, helping to improve the reliability of the manufactured display panel 10, and improving the display effect and performance of the display panel 10.

[0191] In a third aspect, embodiments of this application also provide a display device 100, please refer to... Figure 7 The display device 100 includes the display panel 10 described in any of the preceding claims.

[0192] The display device 100 provided in this embodiment can be a mobile phone, laptop, tablet computer, smartwatch, smart bracelet, navigator, monitor, personal digital assistant (PDA) or other products or components with display functions.

[0193] Since the display device 100 has the aforementioned display panel 10, it has at least one or more advantages and beneficial effects of the aforementioned display panel 10. The specific effects are described above and will not be repeated here.

[0194] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized by, include: Base (1); An isolation structure (2) is located on one side of the base (1). The isolation structure (2) includes a support (21) and a crown (22). The crown (22) is located on the side of the support (21) facing away from the base (1). The support (21) has a first surface (202) on the side facing away from the crown (22), and the crown (22) has a second surface (203) on the side facing away from the support (21). An isolation opening (201) is provided on the isolation structure (2). The isolation opening (201) is formed by the support (21) and the crown (22). The end of the crown (22) near the isolation opening (201) is inclined toward the direction close to the base (1). The isolation opening (201) includes a first opening (201a), a second opening (201b), and a third opening (201c). The distance between the orthographic projection of the end of the first surface (202) near the first opening (201a) on the substrate (1) and the orthographic projection of the end of the second surface (203) near the first opening (201a) on the substrate (1) is a first length; the distance between the orthographic projection of the end of the first surface (202) near the second opening (201b) on the substrate (1) and the orthographic projection of the end of the second surface (203) near the second opening (201b) on the substrate (1) is a second length; and the distance between the orthographic projection of the end of the first surface (202) near the third opening (201c) on the substrate (1) and the orthographic projection of the end of the second surface (203) near the third opening (201c) on the substrate (1) is a third length. The light-emitting device (4) includes a light-emitting functional layer (42), which includes a first light-emitting functional layer (42a) located in the first opening (201a), a second light-emitting functional layer (42b) located in the second opening (201b), and a third light-emitting functional layer (42c) located in the third opening (201c). The first light-emitting functional layer (42a), the second light-emitting functional layer (42b), and the third light-emitting functional layer (42c) are sequentially prepared within the first opening (201a), the second opening (201b), and the third opening (201c); the first length is not less than the second length, and the second length is not less than the third length, in order to compensate for the etching and subsequent retraction caused by the fabrication process of the preceding light-emitting device (4) on the sidewall of the subsequent isolation opening (201).

2. The display panel of claim 1, wherein, The crown (22) includes a first sub-part (221) and a second sub-part (222), the second sub-part (222) being located on the side of the first sub-part (221) near the isolation opening (201); the end of the first sub-part (221) facing away from the base (1) is a first end face (2211), the end of the second sub-part (222) facing away from the base (1) is a second end face (2221), the second end face (2221) is inclined relative to the base (1) and the side of the second end face (2221) facing away from the base (1) is connected to the first end face (2211) and forms the first surface (202); In the cross-sectional direction perpendicular to the base (1), the angle between the plane containing the first end face (2211) and the plane containing the second end face (2221) is an inclination angle, and the inclination angle is an acute angle.

3. The display panel of claim 2, wherein, The tilt angle corresponding to the first opening (201a) is the first tilt angle, the tilt angle corresponding to the second opening (201b) is the second tilt angle, and the tilt angle corresponding to the third opening (201c) is the third tilt angle. Wherein, the first tilt angle is not greater than the second tilt angle, and the second tilt angle is not greater than the third tilt angle.

4. The display panel according to claim 3, characterized in that, The first tilt angle is no greater than 40°, the second tilt angle is in the range of 20° to 70°, and the third tilt angle is in the range of 50° to 89°.

5. The display panel according to claim 3, characterized in that, The first tilt angle, the second tilt angle, and the third tilt angle are the same. The length of the second end face (2221) corresponding to the first opening (201a) is greater than the length of the second end face (2221) corresponding to the second opening (201b). The length of the second end face (2221) corresponding to the second opening (201b) is greater than the length of the second end face (2221) corresponding to the third opening (201c).

6. The display panel according to claim 2, characterized in that, The first sub-part (221) and the second sub-part (222) are an integral structure, and the second sub-part (222) is arranged around the first sub-part (221).

7. The display panel according to any one of claims 1 to 6, characterized in that, The display panel (10) further includes a pixel definition layer (3), which is located between the substrate (1) and the isolation structure (2). A pixel opening (301) is provided on the pixel definition layer (3), and the pixel opening (301) is disposed opposite to and connected to the isolation opening (201).

8. The display panel according to claim 7, characterized in that, The display panel (10) also includes: The display functional layer is located on the substrate (1) and includes a plurality of light-emitting devices (4) located in the corresponding isolation openings (201). A portion of the light-emitting devices (4) covers the side of the pixel definition layer (3) facing away from the substrate (1) through the pixel openings (301). The encapsulation layer (5) is located on the side of the isolation structure (2) and the light-emitting device (4) facing away from the substrate (1), and at least part of the encapsulation layer (5) covers the side of the crown (22) and closes the portion covering the light-emitting device (4).

9. The display panel according to claim 8, characterized in that, The light-emitting device (4) includes a first electrode (41), a light-emitting functional layer (42), and a second electrode (43) stacked sequentially on the substrate (1). The light-emitting functional layer (42) and the second electrode (43) of each of the light-emitting devices (4) are located in the corresponding isolation opening (201), and the first electrode (41) of each of the light-emitting devices (4) is located between the pixel definition layer (3) and the substrate (1). The first electrode (41) is exposed from the corresponding pixel opening (301) and is in contact with the light-emitting functional layer (42).

10. The display panel according to claim 9, characterized in that, The second electrode (43) covers the surface of the light-emitting functional layer (42) facing away from the substrate (1) and overlaps with the end of the support (21) near the substrate (1).

11. The display panel according to claim 9, characterized in that, The light-emitting functional layer (42) includes a first light-emitting functional layer (42a), a second light-emitting functional layer (42b), and a third light-emitting functional layer (42c) with different light-emitting colors. Each of the isolation openings (201) is provided with at least one of the first light-emitting functional layer (42a), the second light-emitting functional layer (42b), and the third light-emitting functional layer (42c).

12. The display panel according to claim 8, characterized in that, The encapsulation layer (5) includes: The first encapsulation part (51) is located on the side of the isolation structure (2) facing away from the substrate (1); The second encapsulation part (52) is located on the side of the light-emitting device (4) facing away from the substrate (1) and is connected to the first encapsulation part (51); The second encapsulation portion (52) covers the light-emitting device (4), and at least part of the isolation structure (2) is close to the outer wall of the isolation opening (201).

13. The display panel according to claim 12, characterized in that, In a direction perpendicular to the base (1), there is a gap between the adjacent first encapsulation portion (51) and the crown portion (22) on the side surface facing away from the base (1).

14. The display panel according to claim 8, characterized in that, The encapsulation layer (5) defines a closed chamber (S) on the side of the isolation structure (2) facing the isolation opening (201).

15. The display panel according to claim 1, characterized in that, The orthographic projection of the support (21) on the base (1) lies within the orthographic projection of the crown (22) on the base (1).

16. A method for manufacturing a display panel, characterized in that, include: Provide a substrate (1); An isolation structure (2) is prepared on one side of the substrate (1). The isolation structure (2) includes a support portion (21) and a crown portion (22). The crown portion (22) is located on the side of the support portion (21) facing away from the substrate (1). The side of the support portion (21) facing away from the crown portion (22) has a first surface (202), and the side of the crown portion (22) facing away from the support portion (21) has a second surface (203). An isolation opening (201) is provided on the isolation structure (2). The isolation opening (201) is formed by the support portion (21) and the crown portion (22). The end of the crown portion (22) near the isolation opening (201) is inclined towards the direction close to the substrate (1). The isolation opening (201) includes a first opening (201a), a second opening (201b), and a third opening (201a). 01c), the distance between the orthographic projection of the end of the first surface (202) near the first opening (201a) on the base (1) and the orthographic projection of the end of the second surface (203) near the first opening (201a) on the base (1) is a first length; the distance between the orthographic projection of the end of the first surface (202) near the second opening (201b) on the base (1) and the orthographic projection of the end of the second surface (203) near the second opening (201b) on the base (1) is a second length; the distance between the orthographic projection of the end of the first surface (202) near the third opening (201c) on the base (1) and the orthographic projection of the end of the second surface (203) near the third opening (201c) on the base (1) is a third length; A light-emitting device (4) is fabricated within the isolation structure (2). The light-emitting device (4) includes a light-emitting functional layer (42). The light-emitting functional layer (42) includes a first light-emitting functional layer (42a) located in the first opening (201a), a second light-emitting functional layer (42b) located in the second opening (201b), and a third light-emitting functional layer (42c) located in the third opening (201c). The first light-emitting functional layer (42a), the second light-emitting functional layer (42b), and the third light-emitting functional layer (42c) are sequentially prepared within the first opening (201a), the second opening (201b), and the third opening (201c); the first length is not less than the second length, and the second length is not less than the third length, in order to compensate for the etching and subsequent retraction caused by the fabrication process of the preceding light-emitting device (4) on the sidewall of the subsequent isolation opening (201).

17. The method for manufacturing a display panel according to claim 16, characterized in that, After the step of preparing an isolation structure (2) on one side of the substrate (1), wherein the isolation structure (2) encloses and forms an isolation opening (201), the method further includes: A light-emitting device (4) is prepared within the isolation opening (201), and an encapsulation layer (5) covering the isolation structure (2) is prepared on the side of the light-emitting device (4) facing away from the substrate (1).

18. The method for manufacturing a display panel according to claim 17, characterized in that, The process of fabricating a light-emitting device (4) within the isolation opening (201) and fabricating an encapsulation layer (5) covering the isolation structure (2) on the side of the light-emitting device (4) facing away from the substrate (1) includes: A display material layer is prepared on the isolation structure (2), and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate (1). The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device (4) located in the first opening (201a) and an encapsulation layer (5) covering the first opening (201a). A display material layer is prepared on the isolation structure (2), and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate (1). The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device (4) located in the second opening (201b) and an encapsulation layer (5) covering the second opening (201b). A display material layer is prepared on the isolation structure (2), and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate (1). The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device (4) located in the third opening (201c) and an encapsulation layer (5) covering the third opening (201c).

19. A display device, characterized in that, The display panel (10) includes any one of claims 1-15.

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