Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel and a preparation method thereof and a display device, and relates to the technical field of display, the display panel comprises a substrate, an isolation structure, a plurality of light-emitting units and a first packaging layer, the isolation structure is arranged on one side of the substrate in the thickness direction, and a plurality of isolation openings are formed through enclosing; the light-emitting units are arranged on one side of the substrate in the thickness direction, and orthographic projections of at least part of the light-emitting units on the substrate are located in orthographic projections of the corresponding isolation openings on the substrate. The first packaging layer is located on the side, away from the substrate, of the light-emitting units, the first packaging layer comprises a plurality of packaging parts, the packaging parts cover the corresponding light-emitting units, each packaging part comprises an extension part, the extension parts are located on the side, away from the substrate, of the isolation structure, and the orthographic projection of the extension parts on the substrate and the orthographic projection of the isolation structure on the substrate are overlapped. A closed cavity is defined between the extension part and the isolation structure. The display panel provided by the invention is beneficial to improving the use performance of the display device.

Description

Technical Field

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

[0002] Currently, flat panel display devices have the advantages of high image quality, power saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc.

[0003] Traditional display panel manufacturing typically uses a fine metal mask (FMM) to pattern luminescent pixels. FMM technology is mature and boasts extensive mass production experience. However, it also suffers from limitations such as limited precision, high development costs, and long development cycles. FMM-free technology eliminates the limitations of traditional OLED processes on display size, resolution, and other performance characteristics, offering the advantages of high performance, full-area scalability, and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, and CN118781966A describe FMM-free technology for reference.

[0004] However, the performance and process performance of current display devices need to be improved. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a display panel, a method for manufacturing the same, and a display device, so as to improve the performance of the display device.

[0006] To achieve the above objectives, the technical solution adopted in this application is: In a first aspect, a display panel is provided, comprising a substrate, an isolation structure, a plurality of light-emitting units and a first encapsulation layer, wherein the isolation structure is arranged on one side of the substrate along the thickness direction, and the isolation structure encloses a plurality of isolation openings; the plurality of light-emitting units are arranged on one side of the substrate along the thickness direction, and the plurality of light-emitting units are located on the side where the isolation structure is located, and at least part of the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the corresponding isolation opening on the substrate; the first encapsulation layer is located on the side of the light-emitting unit facing away from the substrate, the first encapsulation layer comprises a plurality of encapsulation portions, the encapsulation portions cover the corresponding light-emitting units, the encapsulation portions comprise an extension portion, the extension portion is located on the side of the isolation structure facing away from the substrate, and the orthographic projection of the extension portion on the substrate overlaps with the orthographic projection of the isolation structure on the substrate, and a closed cavity is defined between the extension portion and the isolation structure.

[0007] Through the above technical solution, the display panel provided by the present application utilizes the encapsulation part of the first encapsulation layer to cover the corresponding light-emitting unit, and the extension part of the encapsulation part and the isolation structure define a closed cavity, which can help prevent water and oxygen from entering the cavity, thereby helping to prevent water and oxygen from entering between the encapsulation part and the isolation structure, and further helping to prevent water and oxygen from entering the light-emitting unit, thereby helping to improve the encapsulation effect, and further helping to improve the display effect.

[0008] Therefore, the display panel provided in the present application is beneficial to improving the display effect, thereby improving the performance of the display device.

[0009] In some embodiments, the plurality of encapsulation portions include a first encapsulation portion, a second encapsulation portion, and a third encapsulation portion; the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that emit different colors of light; the first encapsulation portion covers the first light-emitting unit, the second encapsulation portion covers the second light-emitting unit, and the third encapsulation portion covers the third light-emitting unit; The first encapsulation layer meets at least one of the following conditions: A closed first cavity is defined between the extension portion of the first packaging portion and the isolation structure; A closed second cavity is defined between the extension portion of the second packaging portion and the isolation structure; A closed third cavity is defined between the extending portion of the third packaging portion and the isolation structure.

[0010] In this way, the first encapsulation portion can improve the encapsulation effect of the first light-emitting unit, which is conducive to improving the luminous effect of the first light-emitting unit. In addition, the second encapsulation portion can improve the encapsulation effect of the second light-emitting unit, which is conducive to improving the luminous effect of the second light-emitting unit. In addition, the third encapsulation portion can improve the encapsulation effect of the third light-emitting unit, which is conducive to improving the luminous effect of the third light-emitting unit.

[0011] In some embodiments, the orthographic projection of the extension of the first encapsulation portion on the substrate overlaps with the orthographic projection of the extension of the second encapsulation portion on the substrate; and / or the orthographic projection of the extension of the second encapsulation portion on the substrate overlaps with the orthographic projection of the extension of the third encapsulation portion on the substrate. In this way, the extension of the first encapsulation portion can interact with the extension of the second encapsulation portion, which helps prevent the extension from cracking. The extension can also improve the encapsulation effect of the encapsulation portion, thereby improving the luminous effect.

[0012] In addition, the extension portion of the second encapsulation portion can interact with the extension portion of the third encapsulation portion, which is beneficial to avoiding the extension portion from breaking. The encapsulation portion can use the extension portion to improve the encapsulation effect, thereby facilitating improving the luminous effect.

[0013] In some embodiments, the inner peripheral edge of the extension portion of the first packaging portion is the first edge, the outer peripheral edge of the extension portion of the first packaging portion is the second edge, a closed first cavity is defined between the extension portion of the first packaging portion and the isolation structure, the first edge and the second edge are both connected to the isolation structure, and the first cavity is located between the first edge and the second edge.

[0014] In this way, the extension portion of the first packaging portion can be directly connected to the isolation structure to form a closed first cavity, which can help prevent water and oxygen from entering between the first packaging portion and the isolation structure, thereby helping to prevent water and oxygen from entering the first light-emitting unit, and helping to improve the light-emitting effect of the first light-emitting unit.

[0015] In some embodiments, the inner peripheral edge of the extension portion of the second packaging portion is the third edge, the outer peripheral edge of the extension portion of the second packaging portion is the fourth edge, and a closed second cavity is defined between the extension portion of the second packaging portion and the isolation structure, and the second cavity is located between the third edge and the fourth edge; The third edge is connected to the isolation structure, a portion of the fourth edge in the circumferential direction is connected to a side of the isolation structure facing away from the substrate, and another portion of the fourth edge in the circumferential direction is connected to a side of the first packaging portion facing away from the substrate. Alternatively, the third edge and the fourth edge are both connected to the isolation structure.

[0016] In this way, the third edge and the fourth edge of the extension of the second packaging part can both be directly connected to the isolation structure to form a closed second cavity. In addition, the third edge of the extension of the second packaging part can be directly connected to the isolation structure, and a portion of the fourth edge of the extension of the second packaging part can be indirectly connected to the side of the isolation structure facing away from the substrate, so that the extension of the second packaging part and the side of the isolation structure facing away from the substrate form a closed second cavity. Therefore, the extension of the second packaging part can help prevent water and oxygen from entering between the second packaging part and the isolation structure, thereby preventing water and oxygen from entering the second light-emitting unit, which is beneficial to improving the light-emitting effect of the second light-emitting unit.

[0017] In some embodiments, the inner peripheral edge of the extension portion of the third packaging portion is a fifth edge, the outer peripheral edge of the extension portion of the third packaging portion is a sixth edge, and a closed third cavity is defined between the extension portion of the third packaging portion and the isolation structure, and the third cavity is located between the fifth edge and the sixth edge. The third packaging part satisfies one of the following conditions: The fifth edge is connected to the isolation structure, a portion of the sixth edge in the circumferential direction is connected to a side of the isolation structure facing away from the substrate, and another portion of the sixth edge in the circumferential direction is connected to a side of the second packaging portion facing away from the substrate; The fifth edge is connected to the isolation structure, a portion of the sixth edge in the circumferential direction is connected to a side of the first packaging portion facing away from the substrate, and another portion of the sixth edge in the circumferential direction is connected to a side of the second packaging portion facing away from the substrate; The fifth edge and the sixth edge are both connected to the isolation structure.

[0018] In this way, the fifth edge and the sixth edge of the extension of the third packaging part can be directly connected to the isolation structure to form a closed third cavity. In addition, the fifth edge of the extension of the third packaging part can be directly connected to the isolation structure, and the sixth edge of the extension of the third packaging part can be indirectly connected to the side of the isolation structure facing away from the substrate, so that the extension of the third packaging part and the side of the isolation structure facing away from the substrate form a closed third cavity. In addition, the fifth edge of the extension of the third packaging part can be indirectly connected to the side of the isolation structure facing away from the substrate, and the sixth edge of the extension of the third packaging part can be indirectly connected to the side of the isolation structure facing away from the substrate, so that the extension of the third packaging part and the side of the isolation structure facing away from the substrate form a closed third cavity. Therefore, the extension of the third packaging part can help prevent water and oxygen from entering between the third packaging part and the isolation structure, thereby preventing water and oxygen from entering the third light-emitting unit, which is beneficial to improving the luminous effect of the third light-emitting unit.

[0019] In some embodiments, the packaging portion includes a first packaging sub-portion and a second packaging sub-portion, the second packaging sub-portion is located on a side of the first packaging sub-portion facing away from the substrate and covers the first packaging sub-portion, and a cavity is defined between the first packaging sub-portion, the second packaging sub-portion and the isolation structure.

[0020] In this way, the packaging part can be provided with a second packaging sub-part covering the first packaging sub-part on the side of the first packaging sub-part away from the substrate, so that a cavity can be defined between the first packaging sub-part, the second packaging sub-part and the isolation structure, which is beneficial to improving the packaging reliability of the packaging part and preventing water and oxygen from entering the light-emitting unit.

[0021] In some embodiments, the first encapsulation subunit is prepared earlier than the second encapsulation subunit. In this way, the display panel provided by the present application can prepare the second encapsulation subunit after preparing the first encapsulation subunit, which is beneficial to improving the encapsulation effect.

[0022] Optionally, the material of the first package sub-unit is different from the material of the second package sub-unit. In this way, the first package sub-unit and the second package sub-unit can have different etching selectivities, which is beneficial to reducing the impact of the etching process on the package unit and improving package reliability.

[0023] Optionally, the material of the first package sub-portion includes an inorganic material, and the material of the second package sub-portion includes an inorganic material.

[0024] Optionally, the material of the first package sub-unit includes one of silicon nitride, silicon oxide and silicon oxynitride, and the material of the second package sub-unit includes another of silicon nitride, silicon oxide and silicon oxynitride.

[0025] In some embodiments, the first packaging part includes a first packaging sub-part and a second packaging sub-part, the second packaging sub-part is located on the side of the first packaging sub-part away from the substrate and covers the first packaging sub-part, and a first cavity is defined between the first packaging sub-part, the second packaging sub-part and the isolation structure; wherein the inner peripheral edge of the extension part of the first packaging part is the inner peripheral edge of the extension part of the first packaging sub-part, and the outer peripheral edge of the extension part of the first packaging part is the outer peripheral edge of the extension part of the second packaging sub-part.

[0026] In this way, the first packaging part can be provided with a second packaging sub-part covering the first packaging sub-part on the side of the first packaging sub-part facing away from the substrate, so that a first cavity can be defined between the first packaging sub-part, the second packaging sub-part and the isolation structure, which is beneficial to improving the packaging reliability of the first packaging part and preventing water and oxygen from entering the first light-emitting unit.

[0027] In some embodiments, the second packaging part includes a first-second packaging sub-part and a second-second packaging sub-part, the second-second packaging sub-part is located on the side of the first-second packaging sub-part away from the substrate, and covers the first-second packaging sub-part, and a second cavity is defined between the first-second packaging sub-part, the second-second packaging sub-part and the isolation structure; wherein the inner peripheral edge of the extension part of the second packaging part is the inner peripheral edge of the extension part of the first-second packaging sub-part, and the outer peripheral edge of the extension part of the second packaging part is the outer peripheral edge of the extension part of the second-second packaging sub-part.

[0028] In this way, the second packaging part can be provided with a second second packaging sub-part covering the first second packaging sub-part on the side of the first second packaging sub-part away from the substrate, so that a second cavity can be defined between the first second packaging sub-part, the second second packaging sub-part and the isolation structure, which is beneficial to improving the packaging reliability of the second packaging part and preventing water and oxygen from entering the second light-emitting unit.

[0029] In some embodiments, the third packaging part includes a first-third packaging sub-part and a second-third packaging sub-part, the second-third packaging sub-part is located on the side of the first-third packaging sub-part away from the substrate, and covers the first-third packaging sub-part, and a third cavity is defined between the first-third packaging sub-part, the second-third packaging sub-part and the isolation structure; wherein the inner peripheral edge of the extension part of the third packaging part is the inner peripheral edge of the extension part of the first-third packaging sub-part, and the outer peripheral edge of the extension part of the third packaging part is the outer peripheral edge of the extension part of the second-third packaging sub-part.

[0030] In this way, the third packaging part can be provided with a second-third packaging sub-part covering the first-third packaging sub-part on the side of the first-third packaging sub-part away from the substrate, so that a third cavity can be defined between the first-third packaging sub-part, the second-third packaging sub-part and the isolation structure, which is beneficial to improving the packaging reliability of the third packaging part and preventing water and oxygen from entering the third light-emitting unit.

[0031] In some embodiments, the display panel provided in the present application further includes a pixel definition layer, the pixel definition layer is located on one side of the substrate, the isolation structure is located on the side of the pixel definition layer facing away from the substrate, the pixel definition layer has a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and at least a portion of the light-emitting unit is disposed in the pixel opening.

[0032] Optionally, the isolation structure includes a supporting portion and an eaves portion, the eaves portion is located on a side of the supporting portion facing away from the base plate, and an orthographic projection of the supporting portion on the base plate is located within an orthographic projection of the eaves portion on the base plate.

[0033] Optionally, the isolation structure further includes a base portion, the support portion is located on the side of the base portion facing away from the substrate, the orthographic projection of the support portion on the substrate is located within the orthographic projection of the base portion on the substrate, and the orthographic projection of the base portion on the substrate is located within the orthographic projection of the eaves portion on the substrate.

[0034] In a second aspect, the present application provides a method for manufacturing a display panel, the method comprising: providing a substrate; A pixel definition layer and an isolation structure are prepared on one side of the substrate. The isolation structure is located on the side of the pixel definition layer facing away from the substrate. The pixel definition layer has a plurality of pixel openings. The isolation structure encloses the plurality of isolation openings. The pixel openings are connected to corresponding isolation openings. preparing a light-emitting unit, wherein at least a portion of the light-emitting unit is disposed within the pixel opening; preparing a first encapsulation layer, wherein the first encapsulation layer covers the light-emitting unit; Among them, the first encapsulation layer includes multiple encapsulation parts, the encapsulation parts cover the corresponding light-emitting units, the encapsulation parts include extension parts, the extension parts are located on the side of the isolation structure away from the substrate, and the orthographic projection of the extension part on the substrate overlaps with the orthographic projection of the isolation structure on the substrate, and a closed cavity is defined between the extension part and the isolation structure.

[0035] Through the above technical solution, the preparation method provided in the present application utilizes the encapsulation part of the first encapsulation layer to cover the corresponding light-emitting unit, and the extension part of the encapsulation part and the isolation structure define a closed cavity, which can help prevent water and oxygen from entering the cavity, thereby helping to prevent water and oxygen from entering between the encapsulation part and the isolation structure, and further helping to prevent water and oxygen from entering the light-emitting unit, thereby helping to improve the encapsulation effect, and further helping to improve the display effect.

[0036] Therefore, the display panel prepared by the preparation method provided in the present application is beneficial to improving the display effect, thereby improving the performance of the display device.

[0037] In some embodiments, preparing a light-emitting unit comprises: preparing a first light-emitting unit; Preparing the first encapsulation layer includes: Prepare a first encapsulation portion, the first encapsulation portion covers the first light-emitting unit, and a closed first cavity is defined between an extension portion of the first encapsulation portion and the isolation structure; Preparing the first packaging part includes: preparing a first packaging sub-unit; A second-first package sub-unit is prepared. The second-first package sub-unit is located on a side of the first-first package sub-unit facing away from the substrate and covers the first-first package sub-unit. A first cavity is defined between the first-first package sub-unit, the second-first package sub-unit and the isolation structure.

[0038] In this way, the first packaging part of the display panel prepared by the preparation method provided in the present application can define a first cavity between the first packaging part and the isolation structure, which is beneficial to improving the packaging reliability of the first packaging part, thereby helping to prevent water and oxygen from entering the first light-emitting unit.

[0039] In addition, the preparation method provided in the present application can prepare a second-first packaging sub-section covering the first-first packaging sub-section after preparing the first-first packaging sub-section, so that a first cavity is defined between the first-first packaging sub-section, the second-first packaging sub-section and the isolation structure, which is beneficial to improving the packaging reliability of the first packaging sub-section, thereby helping to prevent water and oxygen from entering the first light-emitting unit.

[0040] In some embodiments, after preparing the first encapsulation part, The preparation of the light-emitting unit includes: preparing a second light-emitting unit; Preparing the first encapsulation layer includes: A second encapsulation portion is prepared, where the second encapsulation portion covers the second light-emitting unit, and a closed second cavity is defined between the extension portion of the second encapsulation portion and the isolation structure.

[0041] In this way, the second packaging part of the display panel prepared by the preparation method provided in the present application can define a second cavity between the second packaging part and the isolation structure, which is beneficial to improving the packaging reliability of the second packaging part, thereby helping to prevent water and oxygen from entering the second light-emitting unit.

[0042] Optionally, preparing the second packaging part includes: preparing first and second packaging sub-units; A second second package sub-section is prepared. The second second package sub-section is located on a side of the first second package sub-section away from the substrate and covers the first second package sub-section. A second cavity is defined between the first second package sub-section, the second second package sub-section and the isolation structure.

[0043] In this way, the preparation method provided in the present application can prepare the second second packaging sub-section covering the first second packaging sub-section after preparing the first second packaging sub-section, so that a second cavity is defined between the first second packaging sub-section, the second second packaging sub-section and the isolation structure, which is beneficial to improving the packaging reliability of the second packaging section, thereby helping to prevent water and oxygen from entering the second light-emitting unit.

[0044] In some embodiments, after preparing the second encapsulation part, The preparation of the light-emitting unit includes: preparing a third light-emitting unit; Preparing the first encapsulation layer includes: A third encapsulation portion is prepared, where the third encapsulation portion covers the third light-emitting unit, and a closed third cavity is defined between an extension portion of the third encapsulation portion and the isolation structure.

[0045] In this way, the third packaging part of the display panel prepared by the preparation method provided in the present application can define a third cavity between the third packaging part and the isolation structure, which is beneficial to improving the packaging reliability of the third packaging part, thereby helping to prevent water and oxygen from entering the third light-emitting unit.

[0046] Optionally, preparing the third packaging part includes: preparing the first three packaging sub-units; A second third package sub-section is prepared. The second third package sub-section is located on a side of the first third package sub-section away from the substrate and covers the first third package sub-section. A third cavity is defined among the first third package sub-section, the second third package sub-section and the isolation structure.

[0047] In this way, the preparation method provided in the present application can prepare the second three-packaging sub-section covering the first three-packaging sub-section after preparing the first three-packaging sub-section, so that a third cavity is defined between the first three-packaging sub-section, the second three-packaging sub-section and the isolation structure, which is beneficial to improving the packaging reliability of the third packaging section, thereby helping to prevent water and oxygen from entering the third light-emitting unit.

[0048] In a third aspect, the present application provides a display device comprising a display panel according to any of the aforementioned embodiments or a display panel prepared by a method according to any of the aforementioned embodiments. The display device provided in the present application has the same or similar technical effects as the display panel according to any of the aforementioned embodiments or the method according to any of the aforementioned embodiments, and will not be further described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative work.

[0050] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application; Figure 2 for Figure 1 A partial enlarged view of point A in the middle; Figure 3 For the Figure 2 One of the cross-sectional structural diagrams along the CC line; Figure 4 This is one of the structural schematic diagrams of the display panel preparation process in the related art; Figure 5 This is the second structural diagram of the display panel preparation process in the related art; Figure 6 For the Figure 2 The second cross-sectional structural diagram of the CC line; Figure 7 For the Figure 2 The third cross-sectional structural diagram of the CC line; Figure 8 For the Figure 2 The fourth cross-sectional structural diagram of the CC line; Figure 9 This is one of the structural schematic diagrams of a display panel manufacturing process provided in this application; Figure 10 This is the second structural diagram of a display panel manufacturing process provided by this application; Figure 11 This is the third structural diagram of a display panel manufacturing process provided by this application; Figure 12 This is the fourth structural diagram of a display panel manufacturing process provided by this application; Figure 13 This is the fifth structural diagram of a display panel manufacturing process provided by this application; Figure 14 This is one of the structural schematic diagrams of the second display panel manufacturing process provided in this application; Figure 15 This is the second structural diagram of the second display panel manufacturing process provided by this application; Figure 16 This is the third structural diagram of the second display panel manufacturing process provided by this application; Figure 17 This is the fourth structural diagram of the second display panel manufacturing process provided by this application; Figure 18 This is the fifth structural diagram of the second display panel preparation process provided in this application.

[0051] Among them, the reference numerals in the figures are: 100-display panel; 10-substrate; 20-first electrode; 30-pixel definition layer; 40-isolation structure; 401-first isolation opening; 402-second isolation opening; 403-third isolation opening; 50-light-emitting layer; 51-first light-emitting layer; 52-second light-emitting layer; 53-third light-emitting layer; 60-second electrode; 70-first encapsulation layer; 7001-gap; 701-extension portion; 71-first encapsulation portion; 7101-first edge; 7102-second edge; 711-first-first encapsulation sub-portion; 712-second-first encapsulation sub-portion; 72-second encapsulation portion; 7201-third edge; 7202-fourth edge; 721-first-second encapsulation sub-portion; 722-second-second encapsulation sub-portion; 73-third encapsulation portion; 7301-fifth edge; 7302-sixth edge; 731-first-third encapsulation sub-portion; 732-second-third encapsulation sub-portion. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0053] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may 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 may be directly connected to the other element or indirectly connected to the other element.

[0054] 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 accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0055] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0056] Please also refer to Figure 1 、 Figure 2 and Figure 3 An embodiment of 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 LED / μLED) display panel 100 .

[0057] 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.

[0058] Please continue reading Figure 3 The display panel 100 provided in the embodiment of the present application further includes a plurality of light-emitting units, which are located on one side of the substrate 10 along the thickness direction. The plurality of light-emitting units can be prepared in batches according to the process flow. For example, the plurality of light-emitting units can include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit. 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.

[0059] It is understood that the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are sequentially evaporated and patterned. That is, when manufacturing the display panel 100 provided in the embodiment of the present application, the first light-emitting unit can be formed by evaporation and patterning first, the second light-emitting unit can be formed by evaporation and patterning second, and finally the third light-emitting unit can be formed by evaporation and patterning.

[0060] In some embodiments, the first light emitting unit, the second light emitting unit, and the third light emitting unit may be patterned using a mask.

[0061] In some embodiments, the display panel 100 further includes a pixel definition layer 30 (Pixel Defined Layer, PDL) and an isolation structure 40, wherein the isolation structure 40 and the pixel definition layer 30 are arranged on the same side of the substrate 10 in the thickness direction, and the isolation structure 40 is arranged on the side of the pixel definition layer 30 away from the substrate 10, and the isolation structure 40 encloses a plurality of isolation openings. The orthographic projection of the light-emitting unit on the substrate 10 can be located within the orthographic projection of the corresponding isolation opening on the substrate 10. Optionally, the pixel definition layer 30 and the isolation structure 40 can be located in the display area AA. It is understandable that the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit can be patterned by the isolation structure 40 instead of the mask. The pixel definition layer 30 has a pixel opening, and the pixel opening is located within the isolation opening.

[0062] The plurality of isolation openings may include a first isolation opening 401 , a second isolation opening 402 and a third isolation opening 403 . The first light emitting unit corresponds to the first isolation opening 401 , the second light emitting unit corresponds to the second isolation opening 402 , and the third light emitting unit corresponds to the third isolation opening 403 .

[0063] The display panel 100 also includes a first electrode 20 layer, a portion of which is located between the pixel definition layer 30 and the substrate 10. The first electrode 20 layer includes a plurality of first electrodes 20 spaced apart. The pixel opening is connected to the isolation opening, and the pixel opening exposes a portion of the first electrode 20. The light-emitting layer 50 can pass through the pixel opening to connect to the first electrode 20.

[0064] It can be understood that the first electrode 20 of the light-emitting unit is located on the side of the pixel definition layer 30 facing the substrate 10, the light-emitting unit includes a light-emitting layer 50 and a second electrode 60 located on the side of the light-emitting layer 50 away from the substrate 10, the light-emitting layer 50 and the second electrode 60 of the light-emitting unit are located in the isolation opening, and the light-emitting layer 50 is located between the first electrode 20 and the second electrode 60.

[0065] Optionally, the first electrode 20 may be an anode, and the second electrode 60 may be a cathode.

[0066] It can be understood that the light-emitting layer 50 of the first light-emitting unit is the first light-emitting layer 51 , the light-emitting layer 50 of the second light-emitting unit is the second light-emitting layer 52 , and the light-emitting layer 50 of the third light-emitting unit is the third light-emitting layer 53 .

[0067] The display panel 100 provided in the embodiment of the present application further includes a first encapsulation layer 70. The first encapsulation layer 70 is disposed on the side of the pixel definition layer 30 facing away from the substrate 10 and is located on the side of the light-emitting unit facing away from the substrate 10. The first encapsulation layer 70 is adjacent to the light-emitting unit. The first encapsulation layer 70 includes multiple encapsulation portions, each of which covers the corresponding isolation openings and the light-emitting unit. In other words, the orthographic projection of the isolation opening on the substrate 10 is located within the orthographic projection of the corresponding encapsulation portion on the substrate 10, and the orthographic projection of the light-emitting unit on the substrate 10 is located within the orthographic projection of the corresponding encapsulation portion on the substrate 10.

[0068] The plurality of encapsulation sections may include a first encapsulation section 71, a second encapsulation section 72, and a third encapsulation section 73. The first encapsulation section 71 corresponds to the first light-emitting unit and is also formed by patterning. The second encapsulation section 72 corresponds to the second light-emitting unit and is also formed by patterning. The third encapsulation section 73 corresponds to the third light-emitting unit and is also formed by patterning. Optionally, the first encapsulation section 71, the second encapsulation section 72, and the third encapsulation section 73 are prepared in the same order as the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit.

[0069] Please also refer to Figure 3 、 Figure 4 and Figure 5 It can be understood that the isolation openings and pixel openings corresponding to light-emitting units of different light-emitting colors can be prepared in different processes (for example, the first isolation opening 401 corresponding to the first light-emitting unit and the second isolation opening 402 corresponding to the second light-emitting unit are prepared in different processes). The first encapsulation layer 70 is generally used to encapsulate the light-emitting units after they are formed. After the first encapsulation layer 70 encapsulates the first prepared light-emitting unit (for example, the first light-emitting unit), the isolation openings corresponding to the subsequent light-emitting units (for example, the second isolation opening 402 and / or the third isolation opening 403) are prepared.

[0070] When preparing the isolation openings corresponding to the subsequent light-emitting units, it is necessary to use a glue layer (such as photoresist) to cover the prepared first packaging layer 70 (such as the first packaging part 71) to pattern the isolation structure 40 to prepare the isolation openings corresponding to the subsequent light-emitting units.

[0071] It should be noted that, in addition to covering the prepared first encapsulation layer 70 , the adhesive layer also needs to cover the position of the isolation structure 40 where no isolation opening is required.

[0072] For example, after forming the first packaging portion 71 and before forming the second isolation opening 402 , the first adhesive layer covers the packaging portion and the position of the isolation structure 40 where the isolation opening is not required.

[0073] For example, after forming the first packaging portion 71 and before forming the second isolation opening 402 and the third isolation opening 403, the first adhesive layer covers the first packaging portion 71 and the isolation structure 40 where no isolation opening is required.

[0074] For example, after forming the first encapsulation portion 71 and the second encapsulation portion 72, and before forming the third isolation opening 403, the second adhesive layer covers the first encapsulation portion 71 and the isolation structure 40 where no isolation opening is required. The first isolation opening 401 and the second isolation opening 402 can be formed simultaneously. Alternatively, the second isolation opening 402 can be formed after the first isolation opening 401.

[0075] The inventor discovered that Figure 3 The packaging portion includes an extension portion 701, which is located on the side of the isolation structure 40 facing away from the substrate 10, and the orthographic projection of the extension portion 701 on the substrate 10 overlaps with the orthographic projection of the isolation structure 40 on the substrate 10. After the extension portion 701 and the light-emitting layer 50 on the side of the isolation structure 40 facing away from the substrate 10 are etched, a gap 7001 with an opening is formed. In subsequent processes, water and oxygen can easily enter the packaging portion and the isolation structure 40 through the gap 7001, and then enter the light-emitting unit, causing damage to the light-emitting unit and affecting the light-emitting effect.

[0076] To solve the above technical problems, please refer to Figure 6 、 Figure 7 and Figure 8 The display panel 100 provided in the embodiment of the present application defines a closed cavity between the extension portion 701 and the isolation structure 40 .

[0077] In this way, the display panel 100 provided in the embodiment of the present application uses the encapsulation part of the first encapsulation layer 70 to cover the corresponding light-emitting unit, and the extension part 701 of the encapsulation part and the isolation structure 40 define a closed cavity, which can help prevent water and oxygen from entering the cavity, thereby helping to prevent water and oxygen from entering between the encapsulation part and the isolation structure 40, and further helping to prevent water and oxygen from entering the light-emitting unit, thereby helping to improve the encapsulation effect, and further helping to improve the display effect.

[0078] Therefore, the display panel 100 provided in the embodiment of the present application is beneficial to improving the display effect, thereby improving the performance of the display device.

[0079] In some embodiments, the plurality of encapsulation parts include a first encapsulation part 71, a second encapsulation part 72 and a third encapsulation part 73, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit with different luminous colors, the first encapsulation part 71 covers the first light-emitting unit, the second encapsulation part 72 covers the second light-emitting unit, and the third encapsulation part 73 covers the third light-emitting unit; wherein a closed first cavity is defined between the extension part 701 of the first encapsulation part 71 and the isolation structure 40.

[0080] In this way, the first packaging portion 71 can improve the packaging effect of the first light-emitting unit, which is beneficial to prevent water and oxygen from entering the first cavity, and further helps prevent water and oxygen from entering the first light-emitting unit, thereby improving the luminous effect of the first light-emitting unit.

[0081] Optionally, a closed second cavity is defined between the extension portion 701 of the second encapsulation portion 72 and the isolation structure 40. Thus, the second encapsulation portion 72 can improve the encapsulation effect of the second light-emitting unit, thereby preventing water and oxygen from entering the second cavity, and further preventing water and oxygen from entering the third light-emitting unit, thereby improving the luminous effect of the second light-emitting unit.

[0082] Optionally, a closed third cavity is defined between the extension portion 701 of the third encapsulation portion 73 and the isolation structure 40. Thus, the third encapsulation portion 73 can improve the encapsulation effect of the third light-emitting unit, thereby preventing water and oxygen from entering the third cavity, thereby preventing water and oxygen from entering the third light-emitting unit, and thus improving the luminous effect of the third light-emitting unit.

[0083] Please continue reading Figure 7 and Figure 8 Optionally, the orthographic projection of the extension portion 701 of the first encapsulation portion 71 on the substrate 10 overlaps with the orthographic projection of the extension portion 701 of the second encapsulation portion 72 on the substrate 10. In this way, the extension portion 701 of the first encapsulation portion 71 can interact with the extension portion 701 of the second encapsulation portion 72, which helps prevent the extension portion 701 from cracking. The encapsulation portion can use the extension portion 701 to improve the encapsulation effect, thereby improving the luminous effect.

[0084] Please continue reading Figure 7 and Figure 8 Optionally, the orthographic projection of the extension portion 701 of the second encapsulation portion 72 on the substrate 10 overlaps with the orthographic projection of the extension portion 701 of the third encapsulation portion 73 on the substrate 10. In this way, the extension portion 701 of the second encapsulation portion 72 can interact with the extension portion 701 of the third encapsulation portion 73, which helps prevent the extension portion 701 from cracking. The encapsulation portion can use the extension portion 701 to improve the encapsulation effect, thereby improving the luminous effect.

[0085] In some embodiments, please refer to Figure 6 The inner peripheral edge of the extension portion 701 of the first packaging portion 71 is the first edge 7101, and the outer peripheral edge of the extension portion 701 of the first packaging portion 71 is the second edge 7102. The first edge 7101 and the second edge 7102 are both connected to the isolation structure 40, and the first cavity is located between the first edge 7101 and the second edge 7102.

[0086] In this way, the extension portion 701 of the first packaging portion 71 can be directly connected to the isolation structure 40 to form a closed first cavity, which can help prevent water and oxygen from entering between the first packaging portion 71 and the isolation structure 40, thereby helping to prevent water and oxygen from entering the first light-emitting unit, and helping to improve the light-emitting effect of the first light-emitting unit.

[0087] Optionally, the inner peripheral edge of the extension portion 701 of the second packaging portion 72 is the third edge 7201 , the outer peripheral edge of the extension portion 701 of the second packaging portion 72 is the fourth edge 7202 , and the second cavity is located between the third edge 7201 and the fourth edge 7202 .

[0088] For example, please refer to Figure 6 The third edge 7201 and the fourth edge 7202 are both connected to the isolation structure 40. In this way, the third edge 7201 and the fourth edge 7202 of the extension portion 701 of the second packaging portion 72 can be directly connected to the isolation structure 40 to form a closed second cavity.

[0089] For example, please refer to Figure 7 and Figure 8 The third edge 7201 is connected to the isolation structure 40, a circumferential portion of the fourth edge 7202 is connected to the side of the isolation structure 40 facing away from the substrate 10, and another circumferential portion of the fourth edge 7202 is connected to the side of the first packaging portion 71 facing away from the substrate 10.

[0090] In this way, the third edge 7201 of the extension 701 of the second encapsulation portion 72 can be directly connected to the isolation structure 40, and the fourth edge 7202 of the extension 701 of the second encapsulation portion 72 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed second cavity between the extension 701 of the second encapsulation portion 72 and the side of the isolation structure 40 facing away from the substrate 10. Therefore, the extension 701 of the second encapsulation portion 72 can help prevent water and oxygen from entering between the second encapsulation portion 72 and the isolation structure 40, thereby preventing water and oxygen from entering the second light-emitting unit, which helps improve the luminous effect of the second light-emitting unit.

[0091] Optionally, the inner peripheral edge of the extension portion 701 of the third packaging portion 73 is the fifth edge 7301 , the outer peripheral edge of the extension portion 701 of the third packaging portion 73 is the sixth edge 7302 , and the third cavity is located between the fifth edge 7301 and the sixth edge 7302 .

[0092] For example, please refer to Figure 6 The fifth edge 7301 and the sixth edge 7302 are both connected to the isolation structure 40. In this way, the fifth edge 7301 and the sixth edge 7302 of the extension portion 701 of the third packaging portion 73 can be directly connected to the isolation structure 40 to form a closed third cavity.

[0093] For example, please refer to Figure 7 The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the isolation structure 40 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be directly connected to the isolation structure 40, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0094] For example, please refer to Figure 8 The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the first packaging portion 71 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0095] Therefore, the extension portion 701 of the third packaging portion 73 can prevent water and oxygen from entering between the third packaging portion 73 and the isolation structure 40 , thereby preventing water and oxygen from entering the third light-emitting unit, which is beneficial for improving the light-emitting effect of the third light-emitting unit.

[0096] In other embodiments, the inner peripheral edge of the extension portion 701 of the second packaging portion 72 is the third edge 7201 , the outer peripheral edge of the extension portion 701 of the second packaging portion 72 is the fourth edge 7202 , and the second cavity is located between the third edge 7201 and the fourth edge 7202 .

[0097] For example, please refer to Figure 6 The third edge 7201 and the fourth edge 7202 are both connected to the isolation structure 40. In this way, the third edge 7201 and the fourth edge 7202 of the extension portion 701 of the second packaging portion 72 can be directly connected to the isolation structure 40 to form a closed second cavity.

[0098] For example, please refer to Figure 7 and Figure 8 The third edge 7201 is connected to the isolation structure 40, a circumferential portion of the fourth edge 7202 is connected to the side of the isolation structure 40 facing away from the substrate 10, and another circumferential portion of the fourth edge 7202 is connected to the side of the first packaging portion 71 facing away from the substrate 10.

[0099] In this way, the third edge 7201 of the extension 701 of the second encapsulation portion 72 can be directly connected to the isolation structure 40, and the fourth edge 7202 of the extension 701 of the second encapsulation portion 72 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed second cavity between the extension 701 of the second encapsulation portion 72 and the side of the isolation structure 40 facing away from the substrate 10. Therefore, the extension 701 of the second encapsulation portion 72 can help prevent water and oxygen from entering between the second encapsulation portion 72 and the isolation structure 40, thereby preventing water and oxygen from entering the second light-emitting unit, which helps improve the luminous effect of the second light-emitting unit.

[0100] Optionally, the inner peripheral edge of the extension portion 701 of the third packaging portion 73 is the fifth edge 7301 , the outer peripheral edge of the extension portion 701 of the third packaging portion 73 is the sixth edge 7302 , and the third cavity is located between the fifth edge 7301 and the sixth edge 7302 .

[0101] For example, please refer to Figure 6 The fifth edge 7301 and the sixth edge 7302 are both connected to the isolation structure 40. In this way, the fifth edge 7301 and the sixth edge 7302 of the extension portion 701 of the third packaging portion 73 can be directly connected to the isolation structure 40 to form a closed third cavity.

[0102] For example, please refer to Figure 7The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the isolation structure 40 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be directly connected to the isolation structure 40, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0103] For example, please refer to Figure 8 The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the first packaging portion 71 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0104] Therefore, the extension portion 701 of the third packaging portion 73 can prevent water and oxygen from entering between the third packaging portion 73 and the isolation structure 40 , thereby preventing water and oxygen from entering the third light-emitting unit, which is beneficial for improving the light-emitting effect of the third light-emitting unit.

[0105] In some other embodiments, optionally, the inner peripheral edge of the extension portion 701 of the third packaging portion 73 is the fifth edge 7301 , the outer peripheral edge of the extension portion 701 of the third packaging portion 73 is the sixth edge 7302 , and the third cavity is located between the fifth edge 7301 and the sixth edge 7302 .

[0106] For example, please refer to Figure 6 The fifth edge 7301 and the sixth edge 7302 are both connected to the isolation structure 40. In this way, the fifth edge 7301 and the sixth edge 7302 of the extension portion 701 of the third packaging portion 73 can be directly connected to the isolation structure 40 to form a closed third cavity.

[0107] For example, please refer to Figure 7The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the isolation structure 40 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be directly connected to the isolation structure 40, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0108] For example, please refer to Figure 8 The fifth edge 7301 is connected to the isolation structure 40, a portion of the sixth edge 7302 is connected to the side of the first packaging portion 71 facing away from the substrate 10, and another portion of the sixth edge 7302 is connected to the side of the second packaging portion 72 facing away from the substrate 10. In this way, the fifth edge 7301 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, and the sixth edge 7302 of the extension 701 of the third packaging portion 73 can be indirectly connected to the side of the isolation structure 40 facing away from the substrate 10, thereby forming a closed third cavity between the extension 701 of the third packaging portion 73 and the side of the isolation structure 40 facing away from the substrate 10.

[0109] Therefore, the extension portion 701 of the third packaging portion 73 can prevent water and oxygen from entering between the third packaging portion 73 and the isolation structure 40 , thereby preventing water and oxygen from entering the third light-emitting unit, which is beneficial for improving the light-emitting effect of the third light-emitting unit.

[0110] It can be understood that a cavity is formed between at least one of the first packaging portion 71 , the second packaging portion 72 , and the third packaging portion 73 and the isolation structure 40 .

[0111] In some embodiments, the packaging portion includes a first packaging sub-portion and a second packaging sub-portion. The second packaging sub-portion is located on a side of the first packaging sub-portion away from the substrate 10 and covers the first packaging sub-portion. A cavity is defined between the first packaging sub-portion, the second packaging sub-portion and the isolation structure 40.

[0112] In this way, the packaging part can be provided with a second packaging sub-part covering the first packaging sub-part on the side of the first packaging sub-part away from the substrate 10, so that a cavity can be defined between the first packaging sub-part, the second packaging sub-part and the isolation structure 40, which is beneficial to improving the packaging reliability of the packaging part and preventing water and oxygen from entering the light-emitting unit.

[0113] Optionally, the first encapsulation sub-unit is prepared earlier than the second encapsulation sub-unit. In this way, the display panel 100 provided by the embodiment of the present application can prepare the second encapsulation sub-unit after preparing the first encapsulation sub-unit, which is conducive to improving the encapsulation effect.

[0114] Optionally, the material of the first package sub-unit is different from the material of the second package sub-unit. In this way, the first package sub-unit and the second package sub-unit can have different etching selectivities, which is beneficial to reducing the impact of the etching process on the package unit and improving package reliability.

[0115] Optionally, the material of the first package sub-portion includes an inorganic material, and the material of the second package sub-portion includes an inorganic material.

[0116] Optionally, the material of the first package sub-unit includes one of silicon nitride, silicon oxide and silicon oxynitride, and the material of the second package sub-unit includes another of silicon nitride, silicon oxide and silicon oxynitride.

[0117] In some embodiments, please refer to Figure 6 、 Figure 7 and Figure 8 The first packaging part 71 includes a first packaging sub-part 711 and a second packaging sub-part 712. The second packaging sub-part 712 is located on the side of the first packaging sub-part 711 away from the substrate 10 and covers the first packaging sub-part 711. A first cavity is defined between the first packaging sub-part 711, the second packaging sub-part 712 and the isolation structure 40.

[0118] In this way, the first packaging part 71 can be provided with a second packaging sub-part 712 covering the first packaging sub-part 711 on the side of the first packaging sub-part 711 facing away from the substrate 10, so that a first cavity can be defined between the first packaging sub-part 711, the second packaging sub-part 712 and the isolation structure 40, which is beneficial to improving the packaging reliability of the first packaging part 71 and preventing water and oxygen from entering the first light-emitting unit.

[0119] Optionally, the inner peripheral edge of the extension portion 701 of the first packaging portion 71 is the inner peripheral edge of the extension portion 701 of the first-first packaging sub-portion 711 .

[0120] Optionally, the outer peripheral edge of the extension portion 701 of the first packaging portion 71 is the outer peripheral edge of the extension portion 701 of the second-first packaging sub-portion 712 .

[0121] In some embodiments, the second packaging section 72 includes a first-second packaging sub-section 721 and a second-second packaging sub-section 722. The second-second packaging sub-section 722 is located on the side of the first-second packaging sub-section 721 away from the substrate 10 and covers the first-second packaging sub-section 721. A second cavity is defined between the first-second packaging sub-section 721, the second-second packaging sub-section 722 and the isolation structure 40.

[0122] In this way, the second packaging part 72 can be provided with a second-second packaging sub-part 722 covering the first-second packaging sub-part 721 on the side of the first-second packaging sub-part 721 away from the substrate 10, so that a second cavity can be defined between the first-second packaging sub-part 721, the second-second packaging sub-part 722 and the isolation structure 40, which is beneficial to improving the packaging reliability of the second packaging part 72 and preventing water and oxygen from entering the second light-emitting unit.

[0123] Optionally, the inner peripheral edge of the extension portion 701 of the second packaging portion 72 is the inner peripheral edge of the extension portion 701 of the first second packaging sub-portion 721 .

[0124] Optionally, the outer peripheral edge of the extension portion 701 of the second packaging portion 72 is the outer peripheral edge of the extension portion 701 of the second second packaging sub-portion 722 .

[0125] In some embodiments, the third packaging section 73 includes a first third packaging sub-section 731 and a second third packaging sub-section 732. The second third packaging sub-section 732 is located on the side of the first third packaging sub-section 731 away from the substrate 10 and covers the first third packaging sub-section 731. A third cavity is defined between the first third packaging sub-section 731, the second third packaging sub-section 732 and the isolation structure 40.

[0126] In this way, the third packaging part 73 can be provided with a second-third packaging sub-part 732 covering the first-third packaging sub-part 731 on the side of the first-third packaging sub-part 731 facing away from the substrate 10, so that a third cavity can be defined between the first-third packaging sub-part 731, the second-third packaging sub-part 732 and the isolation structure 40, which is beneficial to improving the packaging reliability of the third packaging part 73 and preventing water and oxygen from entering the third light-emitting unit.

[0127] Optionally, the inner peripheral edge of the extension portion 701 of the third packaging portion 73 is the inner peripheral edge of the extension portion 701 of the first third packaging sub-portion 731 .

[0128] Optionally, the outer peripheral edge of the extension portion 701 of the third packaging portion 73 is the outer peripheral edge of the extension portion 701 of the second third packaging sub-portion 732 .

[0129] In some embodiments, the display panel 100 provided in the embodiment of the present application also includes a pixel definition layer 30, the pixel definition layer 30 is located on one side of the substrate 10, the isolation structure 40 is located on the side of the pixel definition layer 30 away from the substrate 10, the pixel definition layer 30 has a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and at least part of the light-emitting unit is arranged in the pixel opening.

[0130] Optionally, the isolation structure 40 includes a support portion and an eave portion, the eave portion is located on a side of the support portion facing away from the base plate 10 , and the orthographic projection of the support portion on the base plate 10 is located within the orthographic projection of the eave portion on the base plate 10 .

[0131] Optionally, the isolation structure 40 also includes a base portion, the supporting portion is located on the side of the base portion facing away from the substrate 10, the orthographic projection of the supporting portion on the substrate 10 is located within the orthographic projection of the base portion on the substrate 10, and the orthographic projection of the base portion on the substrate 10 is located within the orthographic projection of the eaves portion on the substrate 10.

[0132] Optionally, the material of the base portion may be molybdenum (Mo).

[0133] Optionally, the material of the base portion may be titanium (Ti).

[0134] Optionally, the support portion may be made of aluminum (Al).

[0135] Optionally, the material of the eaves portion may be titanium (Ti).

[0136] It can be understood that the isolation structure 40 is used to overlap with the second electrode 60 to electrically connect the second electrode 60 .

[0137] In some embodiments, the display panel 100 provided in the embodiment of the present application may further include a second encapsulation layer and a third encapsulation layer. The second encapsulation layer is located on the side of the first encapsulation layer 70 away from the substrate 10, and the third encapsulation layer is located on the side of the second encapsulation layer away from the substrate 10.

[0138] Optionally, the first encapsulation layer 70 may be an inorganic encapsulation layer formed by chemical vapor deposition (CVD) and patterning.

[0139] Optionally, the second encapsulation layer may be an organic encapsulation layer manufactured by ink jet printing (IJP).

[0140] Optionally, the third encapsulation layer may be an inorganic encapsulation layer formed by chemical vapor deposition (CVD).

[0141] Optionally, the display panel 100 provided in the present application may further include other film layers, which are located on the side of the third encapsulation layer facing away from the substrate 10. The other film layers may include polarizing films, optically clear adhesives (OCA), and the like.

[0142] In some embodiments, the present application also provides a method for manufacturing a display panel 100 , the method comprising: S100, providing a substrate 10; S200, preparing a pixel definition layer 30 and an isolation structure 40 on one side of the substrate 10, wherein the isolation structure 40 is located on the side of the pixel definition layer 30 facing away from the substrate 10, the pixel definition layer 30 having a plurality of pixel openings, and the isolation structure 40 encloses the plurality of isolation openings, and the pixel openings are connected to the corresponding isolation openings; S300, preparing a light-emitting unit, wherein at least a portion of the light-emitting unit is disposed in a pixel opening; S400 , preparing a first encapsulation layer 70 , wherein the first encapsulation layer 70 covers the light-emitting unit.

[0143] Among them, the first encapsulation layer 70 includes multiple encapsulation parts, which cover the corresponding light-emitting units. The encapsulation parts include an extension part 701. The extension part 701 is located on the side of the isolation structure 40 away from the substrate 10, and the orthographic projection of the extension part 701 on the substrate 10 overlaps with the orthographic projection of the isolation structure 40 on the substrate 10, and a closed cavity is defined between the extension part 701 and the isolation structure 40.

[0144] Through the above technical solution, the preparation method provided in the embodiment of the present application utilizes the encapsulation part of the first encapsulation layer 70 to cover the corresponding light-emitting unit, and the extension part 701 of the encapsulation part and the isolation structure 40 define a closed cavity, which can help prevent water and oxygen from entering the cavity, thereby helping to prevent water and oxygen from entering between the encapsulation part and the isolation structure 40, and further helping to prevent water and oxygen from entering the light-emitting unit, thereby helping to improve the encapsulation effect, and further helping to improve the display effect.

[0145] Therefore, the display panel 100 prepared by the preparation method provided in the embodiment of the present application is beneficial to improving the display effect, thereby improving the performance of the display device.

[0146] In some embodiments, in step S300, preparing the light-emitting unit includes: S310, preparing a first light-emitting unit; In step S400, preparing the first encapsulation layer 70 includes: S410 , preparing a first encapsulation portion 71 , the first encapsulation portion 71 covers the first light-emitting unit, and a closed first cavity is defined between the extension portion 701 of the first encapsulation portion 71 and the isolation structure 40 .

[0147] In this way, the first packaging part 71 of the display panel 100 prepared by the preparation method provided in the embodiment of the present application can define a first cavity between the isolation structure 40, which is beneficial to improving the packaging reliability of the first packaging part 71, thereby helping to prevent water and oxygen from entering the first light-emitting unit.

[0148] Optionally, in step S410, preparing the first packaging part 71 includes: S411, preparing a first packaging sub-unit 711; S412, prepare the second-first packaging sub-portion 712, which is located on the side of the first-first packaging sub-portion 711 away from the substrate 10 and covers the first-first packaging sub-portion 711, and defines a first cavity between the first-first packaging sub-portion 711, the second-first packaging sub-portion 712 and the isolation structure 40.

[0149] In this way, the preparation method provided in the embodiment of the present application can prepare the second-first packaging sub-section 712 covering the first-first packaging sub-section 711 after preparing the first-first packaging sub-section 711, so that a first cavity is defined between the first-first packaging sub-section 711, the second-first packaging sub-section 712 and the isolation structure 40, which is beneficial to improving the packaging reliability of the first packaging section 71, thereby helping to prevent water and oxygen from entering the first light-emitting unit.

[0150] In some embodiments, in step S410, after preparing the first packaging part 71, In step S300, preparing the light-emitting unit includes: S320, preparing a second light-emitting unit; In step S400, preparing the first encapsulation layer 70 includes: S420 , preparing a second encapsulation portion 72 , the second encapsulation portion 72 covers the second light-emitting unit, and a closed second cavity is defined between the extension portion 701 of the second encapsulation portion 72 and the isolation structure 40 .

[0151] In this way, the second packaging part 72 of the display panel 100 prepared by the preparation method provided in the embodiment of the present application can define a second cavity between the second packaging part 72 and the isolation structure 40, which is beneficial to improving the packaging reliability of the second packaging part 72, thereby helping to prevent water and oxygen from entering the second light-emitting unit.

[0152] Optionally, in step S420, preparing the second packaging portion 72 includes: S421, preparing the first and second packaging sub-units 721; S422 , prepare the second second package sub-section 722 , which is located on the side of the first second package sub-section 721 facing away from the substrate 10 and covers the first second package sub-section 721 , defining a second cavity between the first second package sub-section 721 , the second second package sub-section 722 and the isolation structure 40 .

[0153] In this way, the preparation method provided in the embodiment of the present application can prepare the second second packaging sub-section 722 covering the first second packaging sub-section 721 after preparing the first second packaging sub-section 721, so that a second cavity is defined between the first second packaging sub-section 721, the second second packaging sub-section 722 and the isolation structure 40, which is beneficial to improving the packaging reliability of the second packaging section 72, thereby helping to prevent water and oxygen from entering the second light-emitting unit.

[0154] In some embodiments, in step S420, after preparing the second packaging portion 72, In step S300, preparing the light-emitting unit includes: S330, preparing a third light-emitting unit; In step S400, preparing the first encapsulation layer 70 includes: S430 , preparing a third encapsulation portion 73 , the third encapsulation portion 73 covers the third light-emitting unit, and a closed third cavity is defined between the extension portion 701 of the third encapsulation portion 73 and the isolation structure 40 .

[0155] In this way, the third packaging part 73 of the display panel 100 prepared by the preparation method provided in the embodiment of the present application can define a third cavity between the isolation structure 40, which is beneficial to improving the packaging reliability of the third packaging part 73, thereby helping to prevent water and oxygen from entering the third light-emitting unit.

[0156] Optionally, in step S430, preparing the third packaging part 73 includes: S431, preparing the first three packaging sub-units 731; S432 , prepare the second third package sub-section 732 , which is located on the side of the first third package sub-section 731 away from the substrate 10 and covers the first third package sub-section 731 , defining a third cavity between the first third package sub-section 731 , the second third package sub-section 732 and the isolation structure 40 .

[0157] In this way, the preparation method provided in the embodiment of the present application can prepare the second third packaging sub-section 732 covering the first third packaging sub-section 731 after preparing the first third packaging sub-section 731, so that a third cavity is defined between the first third packaging sub-section 731, the second third packaging sub-section 732 and the isolation structure 40, which is beneficial to improving the packaging reliability of the third packaging section 73, thereby helping to prevent water and oxygen from entering the third light-emitting unit.

[0158] Please also refer to Figure 6 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 , the present application can prepare according to the preparation method provided in the above embodiment Figure 6 The display panel 100 is shown.

[0159] Please also refer to Figure 7 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 and Figure 18 , the present application can prepare according to the preparation method provided in the above embodiment Figure 7 The display panel 100 is shown.

[0160] In some embodiments, the present application further provides a display device, which includes the display panel 100 of any of the above embodiments or the display panel 100 prepared by the preparation method of any of the above embodiments.

[0161] Optionally, the display device can be a mobile phone, a television, a tablet computer, a laptop computer, a desktop computer, a vehicle-mounted display terminal, a wearable device, an advertising display device, or the like.

[0162] The display device provided in the embodiment of the present application has the same or similar technical effects as the display panel 100 of any of the above embodiments or the preparation method of any of the above embodiments, and will not be described in detail here.

[0163] The above are only specific embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is provided on one side of the substrate along the thickness direction and encloses a plurality of isolation openings; a plurality of light-emitting units disposed on one side of the substrate along the thickness direction and located on the side where the isolation structure is located, wherein at least part of the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the corresponding isolation opening on the substrate; A first encapsulation layer is located on a side of the light-emitting unit facing away from the substrate, the first encapsulation layer includes a plurality of encapsulation parts, the encapsulation parts cover the corresponding light-emitting units, the encapsulation parts include extension parts, the extension parts are located on a side of the isolation structure facing away from the substrate, and the orthographic projection of the extension part on the substrate overlaps with the orthographic projection of the isolation structure on the substrate, and a closed cavity is defined between the extension part and the isolation structure.

2. The display panel according to claim 1, wherein The plurality of encapsulation parts include a first encapsulation part, a second encapsulation part, and a third encapsulation part; the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different luminous colors; the first encapsulation part covers the first light-emitting unit, the second encapsulation part covers the second light-emitting unit, and the third encapsulation part covers the third light-emitting unit; The first encapsulation layer satisfies at least one of the following conditions: A closed first cavity is defined between the extension portion of the first packaging portion and the isolation structure; A closed second cavity is defined between the extension portion of the second packaging portion and the isolation structure; A closed third cavity is defined between the extension portion of the third packaging portion and the isolation structure.

3. The display panel according to claim 2, wherein: The orthographic projection of the extension portion of the first encapsulation portion on the substrate overlaps with the orthographic projection of the extension portion of the second encapsulation portion on the substrate; And / or, an orthographic projection of the extending portion of the second encapsulation portion on the substrate overlaps with an orthographic projection of the extending portion of the third encapsulation portion on the substrate.

4. The display panel according to claim 2, wherein: The inner peripheral edge of the extension portion of the first packaging portion is a first edge, and the outer peripheral edge of the extension portion of the first packaging portion is a second edge. The first edge and the second edge are both connected to the isolation structure. A closed first cavity is defined between the extension portion of the first packaging portion and the isolation structure, and the first cavity is located between the first edge and the second edge.

5. The display panel according to claim 4, wherein: The inner peripheral edge of the extension portion of the second packaging portion is a third edge, the outer peripheral edge of the extension portion of the second packaging portion is a fourth edge, a closed second cavity is defined between the extension portion of the second packaging portion and the isolation structure, and the second cavity is located between the third edge and the fourth edge; The third edge is connected to the isolation structure, a portion of the fourth edge in the circumferential direction is connected to a side of the isolation structure away from the substrate, and another portion of the fourth edge in the circumferential direction is connected to a side of the first packaging portion away from the substrate. Alternatively, the third edge and the fourth edge are both connected to the isolation structure.

6. The display panel according to claim 4 or 5, wherein: The inner peripheral edge of the extension portion of the third packaging portion is a fifth edge, and the outer peripheral edge of the extension portion of the third packaging portion is a sixth edge. A closed third cavity is defined between the extension portion of the third packaging portion and the isolation structure, and the third cavity is located between the fifth edge and the sixth edge. The third packaging unit satisfies one of the following conditions: The fifth edge is connected to the isolation structure, a portion of the sixth edge in the circumferential direction is connected to a side of the isolation structure facing away from the substrate, and another portion of the sixth edge in the circumferential direction is connected to a side of the second packaging portion facing away from the substrate; The fifth edge is connected to the isolation structure, a portion of the sixth edge in the circumferential direction is connected to a side of the first packaging portion facing away from the substrate, and another portion of the sixth edge in the circumferential direction is connected to a side of the second packaging portion facing away from the substrate; The fifth edge and the sixth edge are both connected to the isolation structure.

7. The display panel according to any one of claims 1 to 5, wherein: The packaging part includes a first packaging sub-part and a second packaging sub-part. The second packaging sub-part is located on a side of the first packaging sub-part away from the substrate and covers the first packaging sub-part. The cavity is defined among the first packaging sub-part, the second packaging sub-part and the isolation structure.

8. The display panel according to claim 7, wherein: The preparation order of the first package sub-part is earlier than the preparation order of the second package sub-part.

9. The display panel according to any one of claims 2 to 5, wherein: The first packaging portion includes a first-first packaging sub-portion and a second-first packaging sub-portion, the second-first packaging sub-portion is located on a side of the first-first packaging sub-portion facing away from the substrate and covers the first-first packaging sub-portion, and the first cavity is defined between the first-first packaging sub-portion, the second-first packaging sub-portion, and the isolation structure; The inner peripheral edge of the extension portion of the first packaging portion is the inner peripheral edge of the extension portion of the first-first packaging sub-portion, and the outer peripheral edge of the extension portion of the first packaging portion is the outer peripheral edge of the extension portion of the second-first packaging sub-portion.

10. The display panel according to any one of claims 2 to 5, wherein: The second packaging portion includes a first-second packaging sub-portion and a second-second packaging sub-portion, the second-second packaging sub-portion is located on a side of the first-second packaging sub-portion away from the substrate and covers the first-second packaging sub-portion, and the first-second packaging sub-portion, the second-second packaging sub-portion and the isolation structure define a second cavity; The inner peripheral edge of the extension portion of the second packaging portion is the inner peripheral edge of the extension portion of the first-second packaging sub-portion, and the outer peripheral edge of the extension portion of the second packaging portion is the outer peripheral edge of the extension portion of the second-second packaging sub-portion.

11. The display panel according to any one of claims 2 to 5, wherein: The third packaging portion includes a first three-packaging sub-portion and a second three-packaging sub-portion, wherein the second three-packaging sub-portion is located on a side of the first three-packaging sub-portion facing away from the substrate and covers the first three-packaging sub-portion, and the first three-packaging sub-portion, the second three-packaging sub-portion, and the isolation structure define the third cavity; The inner peripheral edge of the extension portion of the third packaging portion is the inner peripheral edge of the extension portion of the first three packaging sub-parts, and the outer peripheral edge of the extension portion of the third packaging portion is the outer peripheral edge of the extension portion of the second three packaging sub-parts.

12. The display panel according to any one of claims 1 to 5, wherein: The display panel also includes a pixel definition layer, which is located on one side of the substrate. The isolation structure is located on the side of the pixel definition layer facing away from the substrate. The pixel definition layer has a plurality of pixel openings, which are connected to the corresponding isolation openings. At least a portion of the light-emitting unit is disposed within the pixel opening.

13. A method for preparing a display panel, characterized in that: The preparation method comprises: providing a substrate; A pixel definition layer and an isolation structure are prepared on one side of the substrate, wherein the isolation structure is located on a side of the pixel definition layer facing away from the substrate, the pixel definition layer has a plurality of pixel openings, and the isolation structure encloses a plurality of isolation openings, wherein the pixel openings are connected to corresponding isolation openings; preparing a light-emitting unit, wherein at least a portion of the light-emitting unit is disposed within the pixel opening; preparing a first encapsulation layer, wherein the first encapsulation layer covers the light-emitting unit; Wherein, the first encapsulation layer includes a plurality of encapsulation parts, the encapsulation parts cover the corresponding light-emitting units, the encapsulation parts include extension parts, the extension parts are located on the side of the isolation structure away from the substrate, and the orthographic projection of the extension part on the substrate overlaps with the orthographic projection of the isolation structure on the substrate, and a closed cavity is defined between the extension part and the isolation structure.

14. The preparation method according to claim 13, wherein The preparation of the light-emitting unit comprises: preparing a first light-emitting unit; The preparation of the first encapsulation layer comprises: preparing a first encapsulation portion, wherein the first encapsulation portion covers the first light-emitting unit, and a closed first cavity is defined between an extension portion of the first encapsulation portion and the isolation structure; The preparing the first packaging part includes: preparing a first packaging sub-unit; A second-first package sub-portion is prepared. The second-first package sub-portion is located on a side of the first-first package sub-portion away from the substrate and covers the first-first package sub-portion. The first cavity is defined among the first-first package sub-portion, the second-first package sub-portion and the isolation structure.

15. The preparation method according to claim 14, wherein After preparing the first packaging part, The preparation of the light-emitting unit comprises: preparing a second light-emitting unit; The preparation of the first encapsulation layer comprises: A second encapsulation portion is prepared, where the second encapsulation portion covers the second light-emitting unit, and a closed second cavity is defined between an extension portion of the second encapsulation portion and the isolation structure.

16. The preparation method according to claim 15, characterized in that The preparing the second packaging part comprises: preparing first and second packaging sub-units; A second second package sub-section is prepared. The second second package sub-section is located on a side of the first second package sub-section away from the substrate and covers the first second package sub-section. The first second package sub-section, the second second package sub-section and the isolation structure define the second cavity.

17. The preparation method according to claim 15 or 16, characterized in that: After preparing the second packaging part, The preparation of the light-emitting unit comprises: preparing a third light-emitting unit; The preparation of the first encapsulation layer comprises: A third encapsulation portion is prepared, where the third encapsulation portion covers the third light-emitting unit, and a closed third cavity is defined between an extension portion of the third encapsulation portion and the isolation structure.

18. The preparation method according to claim 17, wherein The preparing the third packaging part includes: preparing the first three packaging sub-units; A second third package sub-section is prepared. The second third package sub-section is located on a side of the first third package sub-section away from the substrate and covers the first third package sub-section. The first third package sub-section, the second third package sub-section and the isolation structure define the third cavity.

19. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 12 or the display panel prepared by the preparation method according to any one of claims 13 to 18.

Images