Display panel and display device

Abstract

The invention provides a display panel and a display device, and relates to the technical field of display, the display panel comprises a substrate, a plurality of light emitting units, an isolation structure and a first packaging layer, the isolation structure is arranged on one side of the substrate in the thickness direction, a plurality of isolation openings are defined by the isolation structure, and the light emitting units are arranged in the corresponding isolation openings. The first packaging layer is arranged on the side, away from the substrate, of the light-emitting units, the first packaging layer comprises a plurality of packaging parts, and the packaging parts cover the corresponding light-emitting units. The packaging part comprises a first extension part, the first extension part is located on the side, away from the substrate, of the isolation structure, at least part of the orthographic projection of the first extension part on the substrate is located in the orthographic projection of the isolation structure on the substrate, and the face, facing the substrate, of the first extension part is provided with at least one first protruding part. According to the display panel provided by the invention, the packaging reliability can be improved, so that the use performance of the display device can be improved.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and more specifically, to a display panel and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) is an organic thin-film electroluminescent device. It has the advantages of low power consumption, high brightness, wide viewing angle, high contrast and flexible display. It is widely used in electronic products such as mobile phones, televisions, tablets, laptops, desktop computers, car display terminals, wearable devices, human-computer interaction terminal equipment, etc.

[0003] However, the performance / process performance of the display device needs to be further improved. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display panel and a display device to improve the performance / process performance of the display device.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, the present application provides a display panel, comprising a substrate, a plurality of light-emitting units, an isolation structure and a first encapsulation layer.

[0007] The isolation structure is arranged on one side in the thickness direction of the substrate, and the isolation structure defines a plurality of isolation openings, and the light-emitting units are arranged in corresponding isolation openings.

[0008] The first encapsulation layer is arranged on a side of the light emitting unit away from the substrate, and the first encapsulation layer includes a plurality of encapsulation parts, and the encapsulation parts cover corresponding light emitting units.

[0009] The packaging part includes a first extension part, which is located on a side of the isolation structure away from the substrate. At least part of the orthographic projection of the first extension part on the substrate is located within the orthographic projection of the isolation structure on the substrate. The first extension part is provided with at least one first protrusion on a side facing the substrate.

[0010] Through the above technical solution, a plurality of first protrusions are provided on the side of the first extension portion facing the substrate. The first protrusions can increase the structural strength of the first extension portion. When the first extension portion is subjected to external force during the photoresist stripping process, the first extension portion is not easy to fall off or break, which is beneficial to improving the packaging reliability.

[0011] In this way, the display panel provided by the embodiment of the present application can help improve the packaging reliability, thereby improving the performance of the display device.

[0012] In some embodiments, the isolation structure has at least one first recessed portion on a side facing away from the substrate, and the first recessed portion corresponds to the first protruding portion. Thus, due to the presence of the first recessed portion, the first protruding portion can be naturally formed when the packaging portion is formed, which facilitates processing of the first protruding portion.

[0013] Optionally, the orthographic projection of the first protruding portion on the base is located within the orthographic projection of the corresponding first recessed portion on the base.

[0014] Optionally, the isolation structure includes a base portion, a support portion, and an eave portion stacked in sequence in a direction away from the base, the first recessed portion is provided in the eave portion, and the orthographic projection of the first recessed portion on the base is located within the orthographic projection of the base on a side of the support portion away from the base. In this way, the support portion can support the portion of the eave portion where the first recessed portion is provided, and the first recessed portion has little influence on the eave portion.

[0015] In some embodiments, at least one second recessed portion is provided on a side of the first extension portion facing away from the substrate, and the second recessed portion corresponds to the first protruding portion. In this way, when the photoresist is stripped, the photoresist is more easily stripped at the second recessed portion, and the force applied by the photoresist to the first extension portion at the second recessed portion is smaller, thereby facilitating the first extension portion from falling off or breaking.

[0016] Optionally, the orthographic projection of the second recessed portion on the substrate is located within the orthographic projection of the corresponding first protruding portion on the substrate.

[0017] In some embodiments, the surface of the first protrusion is a convex curved surface.

[0018] In some embodiments, there are a plurality of first protrusions, and at least a portion of the first protrusions is disposed around a corresponding light emitting unit.

[0019] Optionally, a plurality of first protrusions are arranged at intervals along a direction in which an edge of the first protrusion points toward a center of the light emitting unit.

[0020] In some embodiments, there are multiple first protrusions, and the multiple first protrusions are arranged at intervals along the extension direction of the edge of the light emitting unit.

[0021] In some embodiments, the packaging portion further includes a packaging body, the packaging body covers the corresponding light emitting unit, and the first extension portion is connected to an edge of the packaging body.

[0022] In some embodiments, the packaging portion also includes a second extension portion, the first extension portion and the second extension portion are located at the edge of the packaging portion, the first extension portion and the second extension portion are arranged opposite to each other, the second extension portion is located on the side of the isolation structure away from the substrate, at least part of the orthographic projection of the second extension portion on the substrate coincides with the orthographic projection of the isolation structure on the substrate, and at least one second protrusion is provided on a side of the second extension portion facing the substrate.

[0023] In this way, the first extension part and the second extension part are connected to surround the corresponding light-emitting unit, the first protrusion can enhance the strength of the first extension part, the second protrusion can enhance the strength of the second extension part, the first extension part and the second extension part can work together to prevent the packaging part from breaking when the photoresist is stripped, thereby improving the packaging reliability of the packaging part to the light-emitting unit.

[0024] Optionally, the surface of the second protruding portion is a convex arc surface.

[0025] In some embodiments, at least one third recessed portion is provided on a side of the isolation structure facing away from the substrate, and the third recessed portion corresponds to the second protruding portion. In this way, due to the presence of the third recessed portion, the second protruding portion can be naturally formed during the molding of the packaging portion, which facilitates the processing of the second protruding portion.

[0026] Optionally, an orthographic projection of the second protruding portion on the base is located within an orthographic projection of the corresponding third recessed portion on the base.

[0027] In some embodiments, at least one fourth recessed portion is disposed on a surface of the second extending portion facing away from the base, and the fourth recessed portion corresponds to the second protruding portion.

[0028] Optionally, the orthographic projection of the fourth recessed portion on the substrate is located within the orthographic projection of the corresponding second protruding portion on the substrate.

[0029] In some embodiments, there are multiple first protrusions and multiple second protrusions, and the multiple first protrusions are arranged at intervals along the edge of the first protrusion pointing in the direction of the center of the light-emitting unit, and the multiple second protrusions are arranged at intervals along the edge of the second protrusion pointing in the direction of the center of the light-emitting unit.

[0030] In a second aspect, the present application provides another display panel, including a substrate, a plurality of light-emitting units, an isolation structure and a first encapsulation layer.

[0031] The isolation structure is arranged on one side in the thickness direction of the substrate, and the isolation structure defines a plurality of isolation openings, and the light-emitting units are arranged in corresponding isolation openings.

[0032] The first encapsulation layer is arranged on a side of the light emitting unit away from the substrate, and the first encapsulation layer includes a plurality of encapsulation parts, and the encapsulation parts cover corresponding light emitting units.

[0033] The packaging portion includes a first extension portion, which is located on a side of the isolation structure away from the substrate. At least part of the first extension portion's orthographic projection on the substrate is located within the orthographic projection of the isolation structure on the substrate. At least one third protrusion is provided on a side of the first extension portion away from the substrate.

[0034] Through the above technical solution, a plurality of third protrusions are provided on the side of the first extension portion facing away from the substrate. The third protrusions can increase the structural strength of the first extension portion. When the first extension portion is subjected to external force during the photoresist stripping process, the first extension portion is not easy to fall off or break, which is beneficial to improving the packaging reliability.

[0035] In some embodiments, at least one fifth recessed portion is provided on a side of the first extension portion facing the base, and the fifth recessed portion corresponds to the third protruding portion. Thus, due to the presence of the fifth recessed portion, the third protruding portion can be naturally formed during the molding of the packaging portion, which facilitates the processing of the third protruding portion.

[0036] Optionally, the orthographic projection of the third protrusion on the substrate is located within the orthographic projection of the corresponding fifth recess on the substrate.

[0037] In some embodiments, the isolation structure is provided with at least one fourth protrusion on a side facing away from the substrate, and the fifth recess corresponds to the fourth protrusion. Thus, due to the presence of the fourth protrusion, the fifth recess can be naturally formed when the packaging part is formed, which facilitates the processing of the fifth recess.

[0038] Optionally, an orthographic projection of the fourth protrusion on the substrate is located within an orthographic projection of the corresponding fifth recessed portion on the substrate.

[0039] In some embodiments, at least a portion of the third protrusion is disposed around the corresponding light emitting unit.

[0040] Optionally, there are multiple third protrusions, and the multiple third protrusions are arranged at intervals along the direction along the edge of the third protrusion pointing to the center of the light-emitting unit.

[0041] In some embodiments, the packaging portion also includes a second extension portion, the first extension portion and the second extension portion are located at the edge of the packaging portion, the first extension portion and the second extension portion are arranged opposite to each other, the second extension portion is located on the side of the isolation structure facing away from the substrate, at least a portion of the second extension portion on the orthographic projection of the substrate is located within the orthographic projection of the isolation structure on the substrate, and at least one fifth protrusion is provided on a side of the second extension portion facing away from the substrate.

[0042] Optionally, the surface of the fifth protrusion is a convex arc surface.

[0043] In some embodiments, at least one sixth recessed portion is disposed on a surface of the second extension portion facing the base, and the sixth recessed portion corresponds to the fifth protruding portion.

[0044] Optionally, an orthographic projection of the fifth protrusion on the substrate is located within an orthographic projection of the corresponding sixth recessed portion on the substrate.

[0045] In some embodiments, at least one sixth protrusion is disposed on a surface of the isolation structure facing away from the substrate, and the sixth protrusion corresponds to the sixth recessed portion.

[0046] Optionally, an orthographic projection of the sixth protrusion on the substrate is located within an orthographic projection of the corresponding sixth recessed portion on the substrate.

[0047] In some embodiments, at least a portion of the fifth protrusion is disposed around the corresponding light emitting unit.

[0048] Optionally, there are multiple fifth protrusions, and the edges of the fifth protrusions point to the direction of the center of the light-emitting unit, and the multiple fifth protrusions are arranged at intervals.

[0049] In a third aspect, the present application provides a display device, which includes the display panel of the above embodiment. The display device provided by the present application has the same or similar technical effects as the above display panel, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0051] Figure 1 A schematic diagram of the planar structure of a display panel provided in an embodiment of the present application;

[0052] Figure 2 for Figure 1 One of the partial enlarged views at A in the middle;

[0053] Figure 3 for Figure 2 The schematic cross-sectional view along line BB;

[0054] Figure 4 for Figure 1 The second partial enlarged view of point A in the middle;

[0055] Figure 5 for Figure 4 One of the cross-sectional views along line CC;

[0056] Figure 6 for Figure 4 The second cross-sectional view along the CC line;

[0057] Figure 7 for Figure 4 The third cross-sectional view along the CC line;

[0058] Figure 8 for Figure 1 The third partial enlarged view of point A in the middle;

[0059] Fig. 9 for Figure 8 One of the cross-sectional views along line DD;

[0060] Fig.10 for Figure 8 The second cross-sectional view along the DD line;

[0061] Fig.11 for Figure 4 The fourth cross-sectional view along the CC line;

[0062] Fig.12 for Figure 8 The third cross-sectional diagram along the DD line.

[0063] Among them, the reference numerals in the figure are:

[0064] 100-display panel; 10-substrate; 20-first electrode; 30-pixel definition layer; 40-isolation structure; 401-isolation opening; 402-first recessed portion; 403-third recessed portion; 404-fourth protruding portion; 405-sixth protruding portion; 41-base portion; 42-support portion; 43-eaves portion; 50-light-emitting layer; 60-second electrode; 70-first encapsulation layer; 71-encapsulation body; 72-first extension portion; 7201-first protruding portion; 7202-second recessed portion; 7203-third protruding portion; 7204-fifth recessed portion; 73-second extension portion; 7301-second protruding portion; 7302-fourth recessed portion; 7303-fifth protruding portion; 7304-sixth recessed portion. DETAILED DESCRIPTION

[0065] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0066] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0067] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] The present application provides a display panel 100 , please refer to Figure 1 , Figure 2 and Figure 3 The present application provides a display panel 100 , which may be an organic light-emitting diode (OLED) display panel 100 or a micro light-emitting diode (Micro Light Emitting Diode, Micro LED / μLED) display panel 100 .

[0070] The display panel 100 includes a substrate 10 including a display area AA and a non-display area NA surrounding at least a portion of the display area AA.

[0071] The display panel 100 further includes a pixel definition layer 30 and an isolation structure 40, wherein the isolation structure 40 is disposed on one side of the substrate 10 in the thickness direction, and the isolation structure 40 is disposed on the side of the pixel definition layer 30 away from the substrate 10, and the isolation structure 40 defines a plurality of isolation openings 401. Optionally, the pixel definition layer 30 and the isolation structure 40 may be located in the display area AA.

[0072] The display panel 100 further includes a light emitting unit. The light emitting layer 50 and the second electrode 60 of the light emitting unit are located in the isolation opening 401 , and the second electrode 60 is located on a side of the light emitting layer 50 away from the substrate 10 .

[0073] Optionally, the display panel provided in the present application also includes a first electrode layer, the first electrode layer includes multiple first electrodes 20, each first electrode 20 is arranged on a side of the corresponding light-emitting unit close to the substrate 10, the pixel definition layer 30 has a pixel opening, and the light-emitting layer 50 can be connected to the first electrode 20 through the pixel opening.

[0074] It should be noted that the composition, preparation and other contents of the isolation structure 40 are described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 09907 2. Further descriptions are provided in CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0075] The display panel 100 further includes a first encapsulation layer 70, which is disposed on a side of the pixel definition layer 30 away from the substrate 10 and located on a side of the light-emitting unit away from the substrate 10. The first encapsulation layer 70 includes a plurality of encapsulation portions, and the encapsulation portions cover the corresponding isolation openings 401. In other words, the orthographic projection of the isolation opening 401 on the substrate 10 is located within the orthographic projection of the corresponding encapsulation portion on the substrate 10.

[0076] The light-emitting unit includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, and the first light-emitting unit, the second light-emitting unit and the third light-emitting unit can emit light of different colors. For example, the first light-emitting unit can emit red light, the second light-emitting unit can emit green light, and the third light-emitting unit can emit blue light. For example, the first light-emitting unit can emit green light, the second light-emitting unit can emit red light, and the third light-emitting unit can emit blue light. For example, the first light-emitting unit can emit blue light, the second light-emitting unit can emit red light, and the third light-emitting unit can emit green light. For example, the first light-emitting unit can emit red light, the second light-emitting unit can emit blue light, and the third light-emitting unit can emit green light. For example, the first light-emitting unit can emit green light, the second light-emitting unit can emit blue light, and the third light-emitting unit can emit red light. For example, the first light-emitting unit can emit blue light, the second light-emitting unit can emit green light, and the third light-emitting unit can emit red light.

[0077] It can be understood that the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are sequentially evaporated and patterned. The packaging part may include three parts, the first part corresponds to the first light-emitting unit, and the first part is also formed by patterning, the second part corresponds to the second light-emitting unit, and the second part is also formed by patterning, and the third part corresponds to the third light-emitting unit, and the third part is also formed by patterning.

[0078] The encapsulation portion includes an extension portion, which is located on a side of the isolation structure 40 away from the substrate 10 and is spaced apart from the isolation structure 40 . At least part of the orthographic projection of the extension portion on the substrate 10 coincides with the orthographic projection of the isolation structure 40 on the substrate 10 .

[0079] The inventors found that during the patterning process of the packaging part, when the photoresist is stripped, the extension part is easy to fall off, affecting the packaging reliability.

[0080] For example, the packaging portion may include a first extension portion 72, the first extension portion 72 is located on a side of the isolation structure 40 away from the substrate 10, and is spaced apart from the isolation structure 40, and at least a portion of the orthographic projection of the first extension portion 72 on the substrate 10 is located within the orthographic projection of the isolation structure 40 on the substrate 10. Optionally, the first extension portion 72 may be spaced apart from the isolation structure 40. During the patterning process of the packaging portion, when the photoresist is stripped, the bonding force between the photoresist and the first extension portion 72 may cause the first extension portion 72 to easily fall off or break, thereby affecting the packaging reliability.

[0081] Please also read Figure 4 and Figure 5 In order to solve the above technical problems, the display panel 100 provided in the embodiment of the present application is provided with at least one first protrusion 7201 on the side of the first extension portion 72 facing the substrate 10, and the first protrusion 7201 can increase the structural strength of the first extension portion 72. In this way, when the first extension portion 72 is subjected to external force during the photoresist stripping process, the first extension portion 72 is not easy to fall off or break, which is conducive to improving the packaging reliability.

[0082] It is understandable that there is a bonding force between the photoresist and the first extension portion 72. During the process of stripping the photoresist, the photoresist may lift up part of the first extension portion 72, causing cracks in the first extension portion 72. The cracks will stop when they extend to the first protrusion 7201. Therefore, the first protrusion 7201 is helpful in avoiding the first extension portion 72 from breaking, thereby helping to improve the packaging reliability.

[0083] In this way, the display panel 100 provided in the embodiment of the present application can help improve packaging reliability, thereby improving the performance of the display device.

[0084] In some embodiments, at least one first recessed portion 402 is provided on a side of the isolation structure 40 facing away from the substrate 10, and the first recessed portion 402 corresponds to the first protruding portion 7201. It can be understood that, since at least one first recessed portion 402 is provided on the side of the isolation structure 40 facing away from the substrate 10, the first encapsulation layer 70 can naturally form the first protruding portion 7201 when it is formed, which facilitates the processing of the first protruding portion 7201 and the formation of the first protruding portion 7201.

[0085] Exemplarily, the orthographic projection of the first protrusion 7201 on the substrate 10 is located within the orthographic projection of the corresponding first recessed portion 402 on the substrate 10. In this way, the first protrusion 7201 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the first protrusion 7201.

[0086] In some embodiments, see Figure 6 The isolation structure 40 includes a base portion 41, a support portion 42, and an eave portion 43 which are stacked in sequence in a direction away from the base. Optionally, the orthographic projection of the support portion 42 on the base 10 is located within the orthographic projection of the base portion 41 on the base 10. Optionally, the orthographic projection of the support portion 42 on the base 10 is located within the orthographic projection of the eave portion 43 on the base 10.

[0087] The first recessed portion 402 is disposed on the eaves portion 43, and the orthographic projection of the first recessed portion 402 on the base 10 is located within the orthographic projection of the base 10 on the side of the support portion 42 facing away from the base 10. In this way, the thickness of the eaves portion 43 is relatively small, and the support portion 42 can support the portion of the eaves portion 43 where the first recessed portion 402 is disposed, and the first recessed portion 402 has little influence on the eaves portion 43.

[0088] In some embodiments, please refer to Figure 6 and Figure 7 , at least one second recessed portion 7202 is provided on a side of the first extension portion 72 facing away from the substrate 10, and the second recessed portion 7202 corresponds to the first protruding portion 7201. In this way, when the photoresist is stripped, the photoresist is more easily stripped at the second recessed portion 7202, and the force applied by the photoresist to the first extension portion 72 at the second recessed portion 7202 is smaller, which is conducive to preventing the first extension portion 72 from falling off or breaking.

[0089] Optionally, the orthographic projection of the second recessed portion on the substrate is located within the orthographic projection of the corresponding first protruding portion on the substrate.

[0090] It is understandable that, due to the existence of the second recessed portion 7202 , the first protruding portion 7201 can be naturally formed when the first extending portion 72 is formed, which facilitates the processing of the first protruding portion 7201 .

[0091] Optionally, the surface of the first protrusion 7201 may be arc-shaped. Of course, the surface of the first protrusion 7201 may also be a surface of other shapes, such as a rectangle or a triangle.

[0092] In some embodiments, at least part of the first protrusion 7201 is disposed around the corresponding light emitting unit. For example, the first protrusion 7201 may surround the light emitting unit. For example, the first protrusion 7201 may half surround the light emitting unit. For example, the first protrusion 7201 may extend along the edge of the light emitting unit for one circle. For example, the first protrusion 7201 may extend along the edge of the light emitting unit for 1 / 2 circle, 1 / 3 circle, etc.

[0093] In this way, the first protrusion 7201 can further improve the structural strength of the first extension portion 72 .

[0094] Optionally, there may be a plurality of first protrusions 7201, and the plurality of first protrusions 7201 are arranged at intervals along the direction pointing to the center of the light-emitting unit along the edge of the first protrusion 7201. In this way, the first protrusion 7201 can further improve the structural strength of the first extension portion 72. For example, due to the bonding force between the photoresist and the first extension portion 72, when the photoresist lifts part of the first extension portion 72 during the photoresist stripping process, cracks may be generated in the first extension portion 72, and the cracks will stop when they extend to the first protrusion 7201. When the cracks pass over one first protrusion 7201, they will also stop at the next first protrusion 7201. Therefore, the first protrusion 7201 is conducive to preventing the first extension portion 72 from breaking, thereby improving the packaging reliability.

[0095] In other embodiments, there may be multiple first protrusions 7201, and the multiple first protrusions 7201 are arranged at intervals along the extension direction of the edge of the light emitting unit. In this way, the first protrusions 7201 can protect the first extension portion 72 at multiple positions around the light emitting unit, thereby facilitating improving the structural strength of the first extension portion 72.

[0096] In some embodiments, the first protrusion 7201 is spaced apart from the isolation structure 40. It is understood that the first encapsulation layer 70 is formed on the side of the light-emitting unit away from the substrate 10, after the light-emitting layer 50 of the light-emitting unit and the second electrode 60 of the light-emitting unit are prepared, the first encapsulation layer 70 is prepared, and then patterned. The first protrusion 7201 is spaced apart from the isolation structure 40, which can increase the degree of etching and removal of the light-emitting layer 50 and the second electrode 60 between the first extension 72 and the isolation structure 40, which is beneficial to improve the light transmission performance.

[0097] In some embodiments, the encapsulation part includes an encapsulation body 71, and the encapsulation body 71 covers the corresponding light-emitting unit, and the encapsulation body 71 can encapsulate the second electrode 60 and the light-emitting layer 50 in the isolation opening 401. The first extension part 72 is connected to the edge of the encapsulation body 71 and extends along the edge of the encapsulation body 71. In this way, when the structural strength of the first extension part 72 is increased, it can be beneficial to improve the encapsulation effect of the encapsulation part on the light-emitting unit.

[0098] Please also read Figure 8 and Fig. 9 In some embodiments, the packaging portion further includes a second extension portion 73, the second extension portion 73 is located on a side of the isolation structure 40 away from the substrate 10, at least a portion of the orthographic projection of the second extension portion 73 on the substrate 10 is located within the orthographic projection of the isolation structure 40 on the substrate 10, and at least one second protrusion 7301 is provided on a side of the second extension portion 73 facing the substrate 10. Optionally, the second extension portion 73 may be spaced apart from the isolation structure 40.

[0099] In this way, when the second extension portion 73 is subjected to external force during the process of stripping the photoresist, the second extension portion 73 is not easy to fall off or break, which is beneficial to improving the packaging reliability.

[0100] Optionally, the first extension portion 72 and the second extension portion 73 are located at the edge of the packaging portion. Optionally, the first extension portion 72 and the second extension portion 73 are arranged opposite to each other. Exemplarily, the first extension portion 72 and the second extension portion 73 of the same packaging portion can be arranged opposite to each other. Exemplarily, the first extension portion 72 of one packaging portion of two adjacent packaging portions can be arranged opposite to the second extension portion 73 of the other packaging portion.

[0101] It is understandable that there is a bonding force between the photoresist and the second extension portion 73. During the process of stripping the photoresist, the photoresist may lift up part of the second extension portion 73, causing cracks in the second extension portion 73. The cracks will stop when they extend to the second protrusion 7301. Therefore, the second protrusion 7301 is helpful in avoiding the second extension portion 73 from breaking, thereby helping to improve the packaging reliability.

[0102] In addition, the first extension portion 72 and the second extension portion 73 are connected to surround the corresponding light-emitting unit, the first protrusion 7201 can enhance the strength of the first extension portion 72, and the second protrusion 7301 can enhance the strength of the second extension portion 73. The first extension portion 72 and the second extension portion 73 can work together to prevent the packaging portion from breaking when the photoresist is stripped, thereby improving the packaging reliability of the packaging portion to the light-emitting unit.

[0103] It is understandable that the first extension portion 72 and the second extension portion 73 of the same packaging portion can be connected as one. Exemplarily, the first extension portion 72 and the second extension portion 73 extend along the edge of the packaging portion, and the two ends of the first extension portion 72 along the extension direction are respectively connected to the two ends of the second extension portion 73 along the extension direction.

[0104] Optionally, the surface of the second protrusion 7301 may be arc-shaped. Of course, the surface of the second protrusion 7301 may also be a surface of other shapes, such as a rectangle or a triangle.

[0105] In some embodiments, at least one third recessed portion 403 is provided on the side of the isolation structure 40 facing away from the substrate 10, and the third recessed portion 403 corresponds to the second protruding portion 7301. It can be understood that, since at least one third recessed portion 403 is provided on the side of the isolation structure 40 facing away from the substrate 10, the second protruding portion 7301 can be naturally formed when the first encapsulation layer 70 is formed, which facilitates the formation of the second protruding portion 7301.

[0106] Exemplarily, the orthographic projection of the second protrusion 7301 on the substrate 10 is located within the orthographic projection of the corresponding third recess 403 on the substrate 10. In this way, the second protrusion 7301 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the second protrusion 7301.

[0107] Optionally, see Fig.10 , the third recessed portion 403 is disposed in the eaves portion 43, and the orthographic projection of the third recessed portion 403 on the base 10 is located within the orthographic projection of the base 10 on the side of the support portion 42 that is away from the base 10. In this way, the thickness of the eaves portion 43 is small, the support portion 42 can support the portion of the eaves portion 43 where the third recessed portion 403 is disposed, and the third recessed portion 403 has little influence on the eaves portion 43.

[0108] In some embodiments, the second protrusion 7301 is spaced apart from the isolation structure 40. It is understood that the first encapsulation layer 70 is formed on the side of the light-emitting unit away from the substrate 10, after the light-emitting layer 50 of the light-emitting unit and the second electrode 60 of the light-emitting unit are prepared, the first encapsulation layer 70 is prepared, and then patterned. The second protrusion 7301 is spaced apart from the isolation structure 40, which can increase the degree of etching and removal of the light-emitting layer 50 and the second electrode 60 between the second extension 73 and the isolation structure 40, which is beneficial to improve the light transmission performance.

[0109] In some embodiments, at least one fourth recessed portion 7302 is provided on a side of the second extension portion 73 facing away from the substrate 10, and the fourth recessed portion 7302 corresponds to the second protruding portion 7301. In this way, when the photoresist is stripped, the photoresist is more easily stripped at the fourth recessed portion 7302, and the force applied by the photoresist at the fourth recessed portion 7302 to the second extension portion 73 is smaller, which helps to prevent the second extension portion 73 from falling off or breaking.

[0110] Optionally, the orthographic projection of the fourth recessed portion 7302 on the substrate is located within the orthographic projection of the corresponding second protruding portion 7301 on the substrate 10. It is understandable that due to the presence of the fourth recessed portion 7302, the second protruding portion 7301 can be naturally formed when the second extension portion 73 is formed, which facilitates the processing of the second protruding portion 7301.

[0111] In some embodiments, at least part of the second protrusion 7301 is arranged around the corresponding light emitting unit. Exemplarily, the second protrusion 7301 may surround the light emitting unit. Exemplarily, the second protrusion 7301 may half surround the light emitting unit. For example, the second protrusion 7301 may extend along the edge of the light emitting unit for one circle. For example, the second protrusion 7301 may extend along the edge of the light emitting unit for 1 / 2 circle, 1 / 3 circle, etc.

[0112] In this way, the second protrusion 7301 can further improve the structural strength of the second extension portion 73 .

[0113] Optionally, there may be a plurality of second protrusions 7301, and the plurality of second protrusions 7301 are arranged at intervals along the direction pointing to the center of the light-emitting unit along the edge of the second protrusion 7301. In this way, the second protrusion 7301 can further improve the structural strength of the second extension 73. For example, due to the bonding force between the photoresist and the second extension 73, when the photoresist lifts part of the second extension 73 during the photoresist stripping process, cracks may be generated in the second extension 73, and the cracks will stop when they extend to the second protrusion 7301. When the cracks pass over one second protrusion 7301, they will also stop at the next second protrusion 7301. Therefore, the second protrusion 7301 is conducive to preventing the second extension 73 from breaking, thereby improving the packaging reliability.

[0114] In other embodiments, there may be multiple second protrusions 7301, and the multiple second protrusions 7301 are arranged at intervals along the extension direction of the edge of the light emitting unit. In this way, the second protrusions 7301 can protect the second extension portion 73 at multiple positions around the light emitting unit, thereby facilitating improving the structural strength of the second extension portion 73.

[0115] Please also read Fig.11 and Fig.12, the embodiment of the present application also provides another display panel 100, which is different from the display panel 100 of the above embodiment in that at least one third protrusion 7203 is provided on the side of the first extension portion 72 facing away from the substrate 10. It can be understood that there is a bonding force between the photoresist and the first extension portion 72. During the process of stripping the photoresist, the photoresist may lift part of the first extension portion 72, causing cracks in the first extension portion 72. The cracks will stop when they extend to the third protrusion 7203. Therefore, the third protrusion 7203 is conducive to preventing the first extension portion 72 from breaking, thereby improving the packaging reliability.

[0116] In addition, when stripping the photoresist, the photoresist is more easily stripped at the third protrusion 7203, and the force applied by the photoresist at the third protrusion 7203 on the first extension portion 72 is smaller, which helps to prevent the first extension portion 72 from falling off or breaking.

[0117] Exemplarily, the surface of the third protrusion 7203 may be arc-shaped. Of course, the surface of the third protrusion 7203 may also be a surface of other shapes, such as a rectangle or a triangle.

[0118] In some embodiments, at least part of the third protrusion 7203 is arranged around the corresponding light emitting unit. For example, the third protrusion 7203 may surround the light emitting unit. For example, the third protrusion 7203 may half surround the light emitting unit. For example, the third protrusion 7203 may extend along the edge of the light emitting unit for one circle. For example, the third protrusion 7203 may extend along the edge of the light emitting unit for 1 / 2 circle, 1 / 3 circle, etc.

[0119] In this way, the third protrusion 7203 can further improve the structural strength of the first extension portion 72 .

[0120] Optionally, there may be a plurality of third protrusions 7203, and the plurality of third protrusions 7203 are arranged at intervals along the direction pointing to the center of the light-emitting unit along the edge of the third protrusion 7203. In this way, the third protrusion 7203 can further improve the structural strength of the first extension portion 72. For example, due to the bonding force between the photoresist and the first extension portion 72, when the photoresist lifts part of the first extension portion 72 during the photoresist stripping process, cracks may be generated in the first extension portion 72, and the cracks will stop when they extend to the third protrusion 7203. When the cracks pass over one third protrusion 7203, they will stop at the next third protrusion 7203. Therefore, the third protrusion 7203 is conducive to preventing the first extension portion 72 from breaking, thereby improving the packaging reliability.

[0121] In other embodiments, there may be multiple third protrusions 7203, and the multiple third protrusions 7203 are arranged at intervals along the extension direction of the edge of the light emitting unit. In this way, the third protrusions 7203 can protect the first extension portion 72 at multiple positions around the light emitting unit, thereby facilitating improving the structural strength of the first extension portion 72.

[0122] In some embodiments, at least one fifth recessed portion 7204 is provided on one side of the first extension portion 72 facing the substrate 10, and the fifth recessed portion 7204 corresponds to the third protruding portion 7203. Thus, due to the presence of the fifth recessed portion 7204, the third protruding portion 7203 can be naturally formed when the packaging portion is formed, which facilitates the processing of the third protruding portion 7203.

[0123] Exemplarily, the orthographic projection of the third protrusion 7203 on the substrate 10 is located within the orthographic projection of the corresponding fifth recess 7204 on the substrate 10. In this way, the third protrusion 7203 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the third protrusion 7203.

[0124] In some embodiments, at least one fourth protrusion 404 is provided on a side of the isolation structure 40 facing away from the substrate, and the fifth recess 7204 corresponds to the fourth protrusion 404. In this way, due to the presence of the fourth protrusion 404, the fifth recess 7204 can be naturally formed when the packaging part is formed, which facilitates the processing of the fifth recess 7204.

[0125] Exemplarily, the orthographic projection of the fourth protrusion 404 on the substrate 10 is located within the orthographic projection of the corresponding fifth recess 7204 on the substrate 10. In this way, the fifth recess 7204 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the fifth recess 7204.

[0126] In some embodiments, at least part of the third protrusion 7203 is arranged around the corresponding light emitting unit. For example, the third protrusion 7203 may surround the light emitting unit. For example, the third protrusion 7203 may half surround the light emitting unit. For example, the third protrusion 7203 may extend along the edge of the light emitting unit for one circle. For example, the third protrusion 7203 may extend along the edge of the light emitting unit for 1 / 2 circle, 1 / 3 circle, etc.

[0127] In this way, the third protrusion 7203 can further improve the structural strength of the first extension portion 72 .

[0128] Optionally, there may be a plurality of third protrusions 7203, and the plurality of third protrusions 7203 are arranged at intervals along the direction pointing to the center of the light-emitting unit along the edge of the third protrusion 7203. In this way, the third protrusion 7203 can further improve the structural strength of the first extension portion 72. For example, due to the bonding force between the photoresist and the first extension portion 72, when the photoresist lifts part of the first extension portion 72 during the photoresist stripping process, cracks may be generated in the first extension portion 72, and the cracks will stop when they extend to the third protrusion 7203. When the cracks cross one third protrusion 7203, they will also stop at the next third protrusion 7203. Therefore, the third protrusion 7203 is conducive to preventing the first extension portion 72 from breaking, thereby improving the packaging reliability.

[0129] In other embodiments, there may be multiple third protrusions 7203, and the multiple third protrusions 7203 are arranged at intervals along the extension direction of the edge of the light emitting unit. In this way, the third protrusions 7203 can protect the first extension portion 72 at multiple positions around the light emitting unit, thereby facilitating improving the structural strength of the first extension portion 72.

[0130] See also Fig.12 In some embodiments, the display panel 100 of the embodiment of the present application further includes a second extension portion 73, and at least one fifth protrusion 7303 is provided on a side of the second extension portion 73 facing away from the substrate 10. It can be understood that there is a bonding force between the photoresist and the second extension portion 73. During the process of stripping the photoresist, the photoresist may lift part of the second extension portion 73, causing cracks in the second extension portion 73. The cracks stop when they extend to the fifth protrusion 7303. Therefore, the fifth protrusion 7303 is conducive to preventing the second extension portion 73 from breaking, thereby improving the packaging reliability.

[0131] In addition, when stripping the photoresist, the photoresist is more easily stripped at the fifth protrusion 7303, and the force applied by the photoresist at the fifth protrusion 7303 on the second extension portion 73 is smaller, which helps to prevent the second extension portion 73 from falling off or breaking.

[0132] Optionally, the first extension portion 72 and the second extension portion 73 are located at the edge of the packaging portion. Optionally, the first extension portion 72 and the second extension portion 73 are arranged opposite to each other. Exemplarily, the first extension portion 72 and the second extension portion 73 of the same packaging portion can be arranged opposite to each other. Exemplarily, the first extension portion 72 of one packaging portion of two adjacent packaging portions can be arranged opposite to the second extension portion 73 of the other packaging portion.

[0133] Exemplarily, the surface of the fifth protrusion 7303 may be arc-shaped. Of course, the surface of the fifth protrusion 7303 may also be a surface of other shapes, such as a rectangle or a triangle.

[0134] In some embodiments, at least one sixth recessed portion 7304 is provided on a side of the second extension portion 73 facing the substrate 10, and the sixth recessed portion 7304 corresponds to the fifth protruding portion 7303. In this way, due to the existence of the sixth recessed portion 7304, the fifth protruding portion 7303 can be naturally formed when the packaging portion is formed, which facilitates the processing of the fifth protruding portion 7303.

[0135] Exemplarily, the orthographic projection of the fifth protrusion 7303 on the substrate 10 is located within the orthographic projection of the corresponding sixth recess 7304 on the substrate 10. In this way, the fifth protrusion 7303 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the fifth protrusion 7303.

[0136] In some embodiments, at least one sixth protrusion 405 is provided on a side of the isolation structure 40 facing away from the substrate, and the sixth recess 7304 corresponds to the sixth protrusion 405. In this way, due to the existence of the sixth protrusion 405, the sixth recess 7304 can be naturally formed when the packaging part is formed, which facilitates the processing of the sixth recess 7304.

[0137] Exemplarily, the orthographic projection of the sixth protrusion 405 on the substrate 10 is located within the orthographic projection of the corresponding sixth recess 7304 on the substrate 10. In this way, the sixth recess 7304 can be naturally formed when the first encapsulation layer 70 is formed, which can reduce the difficulty of processing the sixth recess 7304.

[0138] In some embodiments, at least part of the fifth protrusion 7303 is disposed around the corresponding light emitting unit. For example, the fifth protrusion 7303 may surround the light emitting unit. For example, the fifth protrusion 7303 may half surround the light emitting unit. For example, the fifth protrusion 7303 may extend along the edge of the light emitting unit for one circle. For example, the fifth protrusion 7303 may extend along the edge of the light emitting unit for 1 / 2 circle, 1 / 3 circle, etc.

[0139] In this way, the fifth protrusion 7303 can further improve the structural strength of the second extension portion 73 .

[0140] Optionally, there may be a plurality of fifth protrusions 7303, and the plurality of fifth protrusions 7303 are arranged at intervals along the direction pointing to the center of the light-emitting unit along the edge of the fifth protrusion 7303. In this way, the fifth protrusion 7303 can further improve the structural strength of the second extension portion 73. For example, due to the bonding force between the photoresist and the second extension portion 73, when the photoresist lifts part of the second extension portion 73 during the photoresist stripping process, cracks may be generated in the second extension portion 73, and the cracks will stop when they extend to the fifth protrusion 7303. When the cracks cross one fifth protrusion 7303, they will also stop at the next fifth protrusion 7303. Therefore, the fifth protrusion 7303 is conducive to preventing the second extension portion 73 from breaking, thereby improving the packaging reliability.

[0141] In other embodiments, there may be multiple fifth protrusions 7303, and the multiple fifth protrusions 7303 are arranged at intervals along the extension direction of the edge of the light emitting unit. In this way, the fifth protrusion 7303 can protect the second extension portion 73 at multiple positions around the light emitting unit, thereby facilitating the improvement of the structural strength of the second extension portion 73.

[0142] The embodiment of the present application further provides a display device, which includes the display panel 100 of the above embodiment. The display device provided by the present application has the same or similar technical effects as the above display panel 100, which will not be described in detail here.

[0143] Optionally, the display device can be an electronic product such as a mobile phone, a television, a tablet computer, a laptop computer, a desktop computer, a vehicle-mounted display terminal, a wearable device, a human-computer interaction terminal device, etc.

[0144] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and defining a plurality of isolation openings; A plurality of light-emitting units, wherein the light-emitting units are disposed in corresponding isolation openings; A first encapsulation layer is arranged on a side of the light-emitting unit away from the substrate, the first encapsulation layer comprises a plurality of encapsulation parts, and the encapsulation parts cover the corresponding light-emitting units; The packaging portion includes a first extension portion, which is located on a side of the isolation structure away from the substrate, at least part of the first extension portion is located within the orthographic projection of the isolation structure on the substrate, and at least one first protrusion is provided on a side of the first extension portion facing the substrate.

2. The display panel according to claim 1, wherein: At least one first recessed portion is provided on a side of the isolation structure facing away from the base, and the first recessed portion corresponds to the first protruding portion; Preferably, the orthographic projection of the first protrusion on the base is located within the orthographic projection of the corresponding first recessed portion on the base; Preferably, the isolation structure includes a base portion, a support portion and an eave portion which are stacked in sequence in a direction away from the base, the first recessed portion is arranged in the eaves portion, and the orthographic projection of the first recessed portion on the base is located within the orthographic projection of the base on a side of the support portion away from the base.

3. The display panel according to claim 1, wherein: At least one second recessed portion is provided on a side of the first extension portion facing away from the base, and the second recessed portion corresponds to the first protruding portion; Preferably, the orthographic projection of the second recessed portion on the substrate is located within the orthographic projection of the corresponding first protruding portion on the substrate.

4. The display panel according to claim 1, wherein: The surface of the first protruding portion is a convex arc surface.

5. The display panel according to claim 1, wherein: At least a portion of the first protrusion is disposed around the corresponding light emitting unit; Preferably, there are a plurality of first protrusions, and the edges of the first protrusions point in a direction toward the center of the light-emitting unit, and the plurality of first protrusions are arranged at intervals.

6. The display panel according to claim 1, wherein: There are a plurality of first protrusions, and the plurality of first protrusions are arranged at intervals along an extending direction of an edge of the light emitting unit.

7. The display panel according to claim 1, wherein: The packaging part further includes a packaging body, the packaging body covers the corresponding light emitting unit, and the first extension part is connected to an edge of the packaging body.

8. The display panel according to claim 1, wherein: The packaging portion further includes a second extension portion, the first extension portion and the second extension portion are located at the edge of the packaging portion, the first extension portion and the second extension portion are arranged opposite to each other, the second extension portion is located at a side of the isolation structure away from the substrate, at least part of the orthographic projection of the second extension portion on the substrate is located within the orthographic projection of the isolation structure on the substrate, and at least one second protrusion is provided on a side of the second extension portion facing the substrate; Preferably, the surface of the second protruding portion is a convex arc surface.

9. The display panel according to claim 8, wherein: At least one third recessed portion is provided on a side of the isolation structure facing away from the base, and the third recessed portion corresponds to the second protruding portion; Preferably, the orthographic projection of the second protrusion on the base is located within the orthographic projection of the corresponding third recess on the base.

10. The display panel according to claim 8, wherein: At least one fourth recessed portion is provided on a side of the second extension portion facing away from the base, and the fourth recessed portion corresponds to the second protruding portion; Preferably, the orthographic projection of the fourth recessed portion on the substrate is located within the orthographic projection of the corresponding second protruding portion on the substrate.

11. The display panel according to claim 8, wherein: There are multiple first protrusions and multiple second protrusions, and the multiple first protrusions are arranged at intervals along the edge of the first protrusion pointing to the center of the light-emitting unit, and the multiple second protrusions are arranged at intervals along the edge of the second protrusion pointing to the center of the light-emitting unit.

12. A display panel, characterized in that: include: substrate; An isolation structure, disposed on one side of the substrate and defining a plurality of isolation openings; A plurality of light-emitting units, wherein the light-emitting units are disposed in corresponding isolation openings; A first encapsulation layer is arranged on a side of the light-emitting unit away from the substrate, the first encapsulation layer comprises a plurality of encapsulation parts, and the encapsulation parts cover the corresponding light-emitting units; The packaging portion includes a first extension portion, which is located on a side of the isolation structure away from the substrate, at least part of the first extension portion is located within the orthographic projection of the isolation structure on the substrate, and at least one third protrusion is provided on a side of the first extension portion away from the substrate.

13. The display panel according to claim 12, wherein: At least one fifth recessed portion is disposed on a side of the first extension portion facing the base, and the fifth recessed portion corresponds to the third protruding portion; Preferably, the orthographic projection of the third protrusion on the base is located within the orthographic projection of the corresponding fifth recessed portion on the base.

14. The display panel according to claim 13, wherein: At least one fourth protrusion is provided on a side of the isolation structure facing away from the base, and the fifth recess corresponds to the fourth protrusion; Preferably, the orthographic projection of the fourth protrusion on the base is located within the orthographic projection of the corresponding fifth recessed portion on the base.

15. The display panel according to claim 12, wherein: At least part of the third protrusion is arranged around the corresponding light emitting unit; Preferably, there are a plurality of third protrusions, and the edges of the third protrusions point to a direction toward the center of the light-emitting unit, and the plurality of third protrusions are arranged at intervals.

16. The display panel according to claim 12, wherein: The packaging portion further includes a second extension portion, the first extension portion and the second extension portion are located at the edge of the packaging portion, the first extension portion and the second extension portion are arranged opposite to each other, the second extension portion is located at a side of the isolation structure away from the substrate, at least a part of the orthographic projection of the second extension portion on the substrate is located within the orthographic projection of the isolation structure on the substrate, and at least one fifth protrusion is provided on a side of the second extension portion away from the substrate; Preferably, the surface of the fifth protrusion is a convex arc surface.

17. The display panel according to claim 16, wherein: At least one sixth recessed portion is disposed on a side of the second extension portion facing the base, and the sixth recessed portion corresponds to the fifth protruding portion; Preferably, the orthographic projection of the fifth protrusion on the base is located within the orthographic projection of the corresponding sixth recessed portion on the base.

18. The display panel according to claim 16, wherein: At least one sixth protrusion is provided on a side of the isolation structure facing away from the base, and the sixth protrusion corresponds to the sixth recessed portion; Preferably, the orthographic projection of the sixth protrusion on the base is located within the orthographic projection of the corresponding sixth recessed portion on the base.

19. The display panel according to claim 16, wherein: At least a portion of the fifth protrusion is disposed around the corresponding light emitting unit; Preferably, there are a plurality of the fifth protrusions, and the edges of the fifth protrusions point in a direction toward the center of the light-emitting unit, and the plurality of the fifth protrusions are arranged at intervals.

20. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 19.

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