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

Abstract

The present application relates to a display panel, a display device and a method for preparing a display panel. The display panel comprises: a substrate; an isolation structure, a plurality of openings being formed by means of the enclosure of the isolation structure; and a light-emitting functional layer, which is arranged on the substrate, wherein the light-emitting functional layer comprises a first light-emitting structure arranged in a first opening and a second light-emitting structure arranged in a second opening; in a thickness direction, the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure; the isolation structure comprises a first part and a second part, which are sequentially arranged in a direction away from the substrate; an orthographic projection of the first part on the substrate is located within an orthographic projection of the second part on the substrate; and the length of a portion, which protrudes from the first part, of the side of the second part facing the first opening is defined as L1, and the length of a portion, which protrudes from the first part, of the side of the second part facing the second opening is defined as L2, where L1＜L2. In the present application, the reliability of the display panel can be improved.

Description

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

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310966067.X, filed on July 31, 2023, entitled “Display Panel, Display Device, and Method for Preparing Display Panel,” and the entire contents of that application are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of display devices, and in particular to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0004] Flat display panels such as Organic Light Emitting Display (OLED) panels and display panels using Light Emitting Diode (LED) devices have the advantages of high image quality, power saving, thin body and wide application range. They are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc., becoming the mainstream display device.

[0005] However, the reliability of existing display panels needs to be improved.

[0006] Summary of the Invention

[0007] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, which can improve the reliability of the display panel.

[0008] On the one hand, according to an embodiment of the present application, a display panel is proposed, comprising: a substrate; an isolation structure, arranged on one side of the substrate in its own thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening; a light-emitting functional layer, arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening, wherein the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure along the thickness direction; a first encapsulation layer including a plurality of encapsulation parts arranged corresponding to the light-emitting structures, the encapsulation parts being located on the side of the light-emitting structure away from the substrate; wherein the isolation structure includes a first part and a second part arranged in sequence along a direction away from the substrate, the orthographic projection of the first part on the substrate being located within the orthographic projection of the second part on the substrate, the length of the second part protruding from the first part toward the side of the first opening being L1, and the length of the second part protruding from the first part toward the side of the second opening being L2, and L1<L2.

[0009] On the other hand, according to an embodiment of the present application, a display panel is proposed, comprising: a substrate; an isolation structure, arranged on one side of the substrate in its own thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening; a light-emitting functional layer, arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening, along the thickness direction, the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure; a first encapsulation layer, comprising a plurality of encapsulation parts arranged corresponding to the light-emitting structures, the encapsulation part being located on the side of the light-emitting structure facing away from the substrate, The encapsulation portion overlaps the side wall of the isolation structure toward the opening and extends along the side wall to the side of the isolation structure away from the substrate, and the multiple encapsulation portions are spaced apart from each other and include a first encapsulation portion located on the side of the first light-emitting structure away from the substrate, and a second encapsulation portion located on the side of the second light-emitting structure away from the substrate; wherein, along the thickness direction, the first encapsulation portion is at least partially spaced apart from and arranged opposite to the surface of the isolation structure away from the substrate to form a first gap, and the second encapsulation portion is at least partially spaced apart from and arranged opposite to the surface of the isolation structure away from the substrate to form a second gap, and the size of the first gap along the thickness direction is smaller than the size of the second gap along the thickness direction.

[0010] On the other hand, according to an embodiment of the present application, a display panel is proposed, comprising: a substrate; an isolation structure, arranged on one side of the substrate in its own thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening; a light-emitting functional layer, arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening; a first encapsulation layer, comprising a plurality of encapsulation portions arranged corresponding to the light-emitting structures, the encapsulation portion being located on a side of the light-emitting structure facing away from the substrate, the encapsulation portion overlapping the side wall of the isolation structure facing the opening and extending along the side wall to a side of the isolation structure facing away from the substrate, the plurality of encapsulation portions being spaced apart from each other and including a first encapsulation portion located on a side of the first light-emitting structure facing away from the substrate, and a second encapsulation portion located on a side of the second light-emitting structure facing away from the substrate; wherein, along the thickness direction, the first encapsulation portion is at least partially spaced apart from and opposite to a surface of the isolation structure facing away from the substrate to form a first gap, and the dimension of the first gap along the thickness direction is smaller than the thickness of the second light-emitting structure.

[0011] On the other hand, according to an embodiment of the present application, a display panel is proposed, comprising: a substrate; an isolation structure, arranged on one side of the substrate in its own thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening, the isolation structure including a first portion and a second portion sequentially arranged in a direction away from the substrate, the orthographic projection of the first portion on the substrate being located within the orthographic projection of the second portion on the substrate; the second portion protruding from the first portion on one side toward the first opening by a length L1, and the second portion protruding from the first portion on one side toward the second opening by a length L2, L1 < L2; a light-emitting functional layer, arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the first opening. and a second light-emitting structure arranged in the second opening; a first encapsulation layer, comprising a plurality of encapsulation parts arranged corresponding to the light-emitting structures, the encapsulation parts being located on a side of the light-emitting structure facing away from the substrate; the encapsulation parts overlapping the side wall of the first part facing the opening and extending along the side wall to a side of the second part facing away from the substrate; the plurality of encapsulation parts comprising a first encapsulation part located on a side of the first light-emitting structure facing away from the substrate, and a second encapsulation part located on a side of the second light-emitting structure facing away from the substrate; wherein, along the thickness direction, the first encapsulation part is at least partially spaced from and arranged opposite to a surface of the second part facing away from the first part and forms a first gap, the second encapsulation part is at least partially spaced from and arranged opposite to a surface of the second part facing away from the first part and forms a second gap, and the size of the first gap is smaller than the size of the second gap.

[0012] On the other hand, according to an embodiment of the present application, a display panel is proposed, comprising a substrate; an isolation structure arranged on one side of the substrate in its own thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening; a light-emitting functional layer arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening, wherein the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure along the thickness direction; a first encapsulation layer including a plurality of encapsulation portions arranged corresponding to the light-emitting structures, the encapsulation portions being located on a side of the light-emitting structure facing away from the substrate; the plurality of encapsulation portions being spaced apart from each other The light emitting device is provided with a first packaging portion located on a side of the first light emitting structure facing away from the substrate, and a second packaging portion located on a side of the second light emitting structure facing away from the substrate; wherein, on a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the first light emitting structure, the distance from the edge of the isolation structure around the first light emitting structure to the edge of the end portion of the first packaging portion parallel to the plane where the substrate is located is M1, and on a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the second light emitting structure, the distance from the edge of the isolation structure around the second light emitting structure to the edge of the end portion of the second packaging portion parallel to the plane where the substrate is located is M2, and M1<M2.

[0013] On the other hand, according to an embodiment of the present application, a display panel is proposed, comprising: a substrate; an isolation structure, arranged on one side of the substrate in its thickness direction, the isolation structure enclosing a plurality of openings, the plurality of openings including a first opening and a second opening; a light-emitting functional layer, arranged on the substrate, the light-emitting functional layer including a plurality of light-emitting structures, the plurality of light-emitting structures including a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening, wherein the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure in the thickness direction; a first encapsulation layer, comprising a plurality of encapsulation portions arranged corresponding to the light-emitting structures, the encapsulation portions being located on one side of the light-emitting structure facing away from the substrate side; multiple encapsulation parts are arranged at intervals from each other and include a first encapsulation part located on the side of the first light-emitting structure facing away from the substrate, and a second encapsulation part located on the side of the second light-emitting structure facing away from the substrate; the end of the first encapsulation part is provided with a first surface, and the end of the second encapsulation part is provided with a second surface, wherein, in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the first light-emitting structure, the inclination angle of the first surface relative to the substrate is A1, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the second light-emitting structure, the inclination angle of the second surface relative to the substrate is A2, and A1<A2.

[0014] On the other hand, according to an embodiment of the present application, a display device is provided, comprising the above-mentioned display panel.

[0015] In another aspect, according to an embodiment of the present application, a method for manufacturing a display panel includes:

[0016] An isolation structure is formed on one side of the substrate in a thickness direction, wherein the isolation structure encloses a plurality of openings, the plurality of openings including a first opening and a second opening;

[0017] forming a first light emitting structure layer and a first packaging material layer of a first thickness on the substrate and the isolation structure;

[0018] Removing the first light emitting structure layer and at least a portion of the first packaging material layer outside the first opening to form a first light emitting structure located in the first opening and a first packaging portion covering the first light emitting structure;

[0019] forming a second light emitting structure layer and a second packaging material layer of a second thickness on the substrate and the isolation structure, wherein the second thickness is greater than the first thickness;

[0020] The second light emitting structure layer and at least a portion of the second packaging material layer outside the second opening are removed to form a second light emitting structure located in the second opening and a second packaging portion covering the second light emitting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0022] FIG1 is a top view of a display panel according to an embodiment of the present application;

[0023] FIG2 is a schematic cross-sectional view of a display panel according to an embodiment of the present application along the direction BB in FIG1 ;

[0024] FIG3 is a partial enlarged view of point A in FIG2 ;

[0025] FIG4 is a partial enlarged view of a display panel according to an embodiment of the present application;

[0026] FIG5 is a schematic cross-sectional view of a display panel according to another embodiment of the present application;

[0027] FIG6 is a schematic cross-sectional view of a display panel according to another embodiment of the present application;

[0028] FIG7 is a schematic structural diagram of a display device according to an embodiment of the present application;

[0029] FIG8 is a schematic structural diagram of a display panel according to another embodiment of the present application;

[0030] FIG9 is a schematic structural diagram of a display panel according to another embodiment of the present application;

[0031] FIG10 is a flow chart of a method for manufacturing a display panel according to an embodiment of the present application;

[0032] 11 to 18 are schematic structural diagrams corresponding to the steps of a method for manufacturing a display panel provided in one embodiment of the present application.

[0033] Marking instructions 10, substrate; 20, isolation structure; 21, first part; 211, first sublayer; 212, second sublayer; 22, second part; 23, opening; 23a, first opening; 23b, second opening; 23c, third opening; 30, light-emitting functional layer; 31, light-emitting structure; 31a, first light-emitting structure; 31b, second light-emitting structure; 31c, third light-emitting structure; 311, organic material layer; 312, first electrode; 40, first encapsulation layer; 41, encapsulation part; 41a, first encapsulation part; 41b, second encapsulation part; 41c, third encapsulation part; 50, second encapsulation layer; 60, third encapsulation layer; 70, pixel defining layer; 80, second electrode; 91, first gap; 92, second gap; 93, third gap; 110, first light-emitting structure layer; 120, first encapsulation material layer; 130, colloid; X-thickness direction.

[0034] In the drawings, like parts are given like reference numerals, but the drawings are not necessarily drawn to scale. DETAILED DESCRIPTION

[0035] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise..." do not exclude the formation of other identical elements in the process, method, article or device comprising the elements.

[0037] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or region, it may mean that it is directly on the other layer or region, or that other layers or regions are included between it and the other layer or region. Furthermore, if the component is turned over, the layer or region will be "below" or "beneath" the other layer or region.

[0038] It will be apparent to those skilled in the art that various modifications and variations can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and variations of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the embodiments provided in the examples of this application can be combined with each other without contradiction.

[0039] In the related art, an isolation structure may be provided in the display panel to achieve isolation between different light-emitting structures. However, during the use of the display panel, display failure may easily occur.

[0040] Through research, the inventors found that this is because during the preparation process of the display panel, a step difference is formed between the packaging structure and the isolation structure of the light-emitting structure with the previous thickness requirement, which makes the cathode area of ​​the light-emitting structure with the latter thickness requirement unable to completely cover the packaging structure above the previously formed sub-pixel after being formed. As a result, when the light-emitting structure with the latter thickness requirement is patterned, etching will damage the retained part of the packaging structure of the previous light-emitting structure, resulting in a decrease in product yield and display failure.

[0041] In view of this, in a first aspect, referring to Figures 1 to 4 , embodiments of the present application provide a display panel comprising a substrate 10, an isolation structure 20, a light-emitting functional layer 30, and a first encapsulation layer 40. The isolation structure 20 is disposed on one side of the substrate 10 in its thickness direction X. The isolation structure 20 encloses a plurality of openings 23, including a first opening 23a and a second opening 23b. The light-emitting functional layer 30 is disposed on the substrate 10 and includes a plurality of light-emitting structures 31, including a first light-emitting structure 31a disposed within the first opening 23a and a second light-emitting structure 31b disposed within the second opening 23b. Along the thickness direction X of the substrate 10 (also understood to be the direction perpendicular to the plane of the substrate 10), the thickness D2 of the second light-emitting structure 31b is greater than the thickness D1 of the first light-emitting structure 31a. The first encapsulation layer 40 includes a plurality of encapsulation portions 41 corresponding to the light-emitting structures 31. The encapsulation portions 41 are located on the side of the light-emitting structure 31 facing away from the substrate 10. Among them, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 on the side toward the first opening 23a is L1, and the length of the second part 22 protruding from the first part 21 on the side toward the second opening 23b is L2, and L1<L2.

[0042] It should be noted that the first and second in this application document are not specific and do not have a ranking definition, but are merely pronouns.

[0043] The number of openings 23 can be set according to the display requirements of the display panel. The number of first openings 23a and the number of second openings 23b are both multiple. The number of first openings 23a can be equal to the number of second openings 23b. Of course, the number of one of the first openings 23a and the second openings 23b can also be greater than the other.

[0044] The light emitted by the first light emitting structure 31a and the second light emitting structure 31b can be different. For example, the light emitted by the first light emitting structure 31a can include blue light, and the light emitted by the second light emitting structure 31b can include green light. Of course, the light emitted by the first light emitting structure 31a can also include green light, and the light emitted by the second light emitting structure 31b can include red light.

[0045] The substrate 10 can be a hard substrate 10, such as a glass substrate 10; it can also be a flexible substrate 10, and its material can be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 10 is mainly used to support the devices set thereon.

[0046] An array layer may also be included between the substrate 10 and the light-emitting functional layer 30, and the array layer may include a driving circuit. For example, the array layer may include a first conductive layer, a second conductive layer, and a third conductive layer that are stacked and arranged on one side of the substrate 10. An insulating layer is provided between adjacent conductive layers. Exemplarily, the pixel driving circuit provided in the array layer includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first conductive layer, the second plate may be located in the second conductive layer, and the source and drain may be located in the third conductive layer.

[0047] The isolation structure 20 may be located on the pixel defining layer 70 , or the isolation structure 20 may be located on the planarization layer. The location of the isolation structure 20 is not specifically limited herein.

[0048] Optionally, the isolation structure 20 and the light-emitting functional layer 30 are located on the same side of the substrate 10, and the isolation structure 20 encloses a plurality of openings 23. The embodiment of the present application does not limit the size and shape of the isolation structure 20. Optionally, the orthographic projection of the isolation structure 20 on the substrate 10 can be a mesh structure. Of course, in some embodiments, the orthographic projection of the isolation structure 20 on the substrate 10 can also be a plurality of independent annular structures, and each independently arranged annular structure is correspondingly provided with an opening 23. The above-mentioned isolation structures 20 in various forms can meet the use requirements of the display panel.

[0049] The plurality of openings 23 enclosed by the isolation structure 20 may correspond to the light emitting structures 31 one to one, with one light emitting structure 31 disposed in one opening 23. Alternatively, multiple light emitting structures 31 may be disposed in one opening 23, for example, multiple light emitting structures 31 of the same color may be disposed in one opening 23.

[0050] The first encapsulation layer 40 can be used to protect the light emitting structure 31 to reduce the probability of water, oxygen, etc. invading the light emitting structure 31 , thereby improving the reliability of the light emitting structure 31 .

[0051] The first encapsulation layer 40 includes multiple encapsulation portions 41, each of which is provided corresponding to each light-emitting structure 31 to achieve encapsulation of the light-emitting structure 31. In some embodiments, multiple light-emitting structures 31 are provided in a one-to-one correspondence with multiple encapsulation portions 41, thereby achieving independent encapsulation of the light-emitting structures 31. Alternatively, one encapsulation portion 41 is provided corresponding to multiple light-emitting structures 31, and multiple light-emitting structures 31 are encapsulated by one encapsulation portion 41. For example, multiple light-emitting structures 31 of the same color are encapsulated by one encapsulation portion 41.

[0052] The length of the second portion 22 protruding from the first portion 21 on the side facing the first opening 23a is L1, which can be understood as: on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the first light-emitting structure 31a, the distance parallel to the plane of the substrate 10 between the edge of the second portion 22 on the side facing the first opening 23a and the edge of the first portion 21 on the side facing the first opening 23a. The edge of the first portion 21 on the side facing the first opening 23a can refer to the end of the first portion 21 on the side facing the first opening 23a facing the substrate 10, or it can be the end of the first portion 21 on the side facing the first opening 23a facing away from the substrate 10.

[0053] The length of the second portion 22 protruding from the first portion 21 on the side facing the second opening 23b is L2, which can be understood as: on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the second light-emitting structure 31b, the distance between the edge of the second portion 22 on the side facing the second opening 23b and the edge of the first portion 21 on the side facing the second opening 23b is parallel to the plane of the substrate 10. The edge of the first portion 21 on the side facing the second opening 23b can refer to the end of the first portion 21 on the side facing the second opening 23b facing the substrate 10, or the end of the first portion 21 on the side facing the second opening 23b facing away from the substrate 10.

[0054] In the display panel provided in the embodiment of the present application, since the thickness D2 of the second light-emitting structure 31b is greater than the thickness D1 of the first light-emitting structure 31a, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 on the side toward the first opening 23a is L1, and the length of the second part 22 protruding from the first part 21 on the side toward the second opening 23b is L2, L1<L2, so that when the display panel is formed, each light-emitting structure 31 can be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the former thickness requirement during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0055] Since the orthographic projection of the first portion 21 on the substrate 10 is located within the orthographic projection of the second portion 22 on the substrate 10, that is, the second portion 22 is at least partially disposed beyond the first portion 21 in a direction parallel to the plane of the substrate 10. This design facilitates separation of the luminescent material falling into the opening 23 from the luminescent material located on the side of the second portion 22 facing away from the substrate 10 during the fabrication process of the light-emitting structure 31, thereby meeting the fabrication requirements of the light-emitting structure 31.

[0056] In some optional embodiments, the display panel provided by the embodiments of the present application, the multiple openings 23 further include a third opening 23c, the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c, along the thickness direction X, the thickness D3 of the third light-emitting structure 31c is greater than the thickness D2 of the second light-emitting structure 31b, and the length of the second portion 22 protruding from the first portion 21 toward the side of the third opening 23c is L3, and L2<L3.

[0057] There can be multiple third openings 23c, which can be equal to or different from the first openings 23a and the second openings 23b. Specifically, the number of the third openings 23c can be set according to the arrangement structure of the light emitting structures 31 with different light emitting colors.

[0058] Each third opening 23c is provided with a third light-emitting structure 31c. The length of the second portion 22 protruding from the first portion 21 on the side facing the third opening 23c is L3, which can be understood as the distance, parallel to the plane of the substrate 10, between the edge of the second portion 22 on the side facing the third opening 23c and the edge of the first portion 21 on the side facing the third opening 23c, along a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the third light-emitting structure 31c. The edge of the first portion 21 on the side facing the third opening 23c can refer to the end of the first portion 21 on the side facing the third opening 23c that faces the substrate 10, or the end of the first portion 21 on the side facing the third opening 23c that faces away from the substrate 10.

[0059] The color of light emitted by the third light emitting structure 31 c may be different from that of the first light emitting structure 31 a and the second light emitting structure 31 b .

[0060] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, enables that when the multiple light-emitting structures 31 of the display panel have three or more thickness specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has already been formed during patterning, thereby avoiding the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0061] It is understandable that in the display panel provided by the embodiment of the present application, the luminous colors of the first light emitting structure 31a, the second light emitting structure 31b, and the third light emitting structure 31c can be the same or different from one another, or all three can be different. Specific settings can be made according to display requirements.

[0062] In some optional embodiments, in the display panel provided by the embodiments of the present application, the first light-emitting structure 31 a , the second light-emitting structure 31 b , and the third light-emitting structure 31 c have different luminous colors.

[0063] That is, the first light emitting structure 31 a , the second light emitting structure 31 b and the third light emitting structure 31 c all emit different colors.

[0064] The display panel provided in the embodiment of the present application, through the above-mentioned configuration, can effectively meet the diversified display requirements of the display panel. Furthermore, the above-mentioned configuration facilitates step-by-step molding of the display panel according to color during molding. For example, a light-emitting structure 31 of a corresponding light-emitting color with a thinner thickness can be molded first, followed by a light-emitting structure 31 of a corresponding light-emitting color with a second-thicker thickness, and finally, the light-emitting structure 31 of a corresponding light-emitting color with the thickest thickness. This effectively avoids damage to the encapsulation portion 41 of the light-emitting structure 31 and improves the reliability of the display panel.

[0065] In some optional embodiments, the wavelength of the light emitted by the first light emitting structure 31 a is smaller than the wavelength of the light emitted by the second light emitting structure 31 b.

[0066] In some optional embodiments, the wavelength of light emitted by the first light emitting structure 31 a is smaller than the wavelength of light emitted by the third light emitting structure 31 c .

[0067] In some optional embodiments, the wavelength of the light emitted by the second light emitting structure 31 b is smaller than the wavelength of the light emitted by the third light emitting structure 31 c .

[0068] The above arrangement can also effectively meet the diversified display requirements of the display panel. Furthermore, the above arrangement facilitates step-by-step molding of the display panel according to color during molding. For example, the light-emitting structure 31 corresponding to the color of the shorter wavelength can be molded first, followed by the light-emitting structure 31 corresponding to the color of the longer wavelength, and finally the light-emitting structure 31 corresponding to the color of the longest wavelength. This effectively avoids damage to the encapsulation portion 41 of the light-emitting structure 31 and improves the reliability of the display panel.

[0069] In some optional embodiments, in the display panel provided by the embodiments of the present application, the light emitted by the first light emitting structure 31a includes blue light, the light emitted by the second light emitting structure 31b includes green light, and the light emitted by the third light emitting structure 31c includes red light.

[0070] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, can effectively meet the display requirements of the display panel. Furthermore, based on the characteristics of the luminescent materials of different luminescent colors and the display panel's requirements for the luminescent brightness of the different color luminescent structures 31, the thickness of the luminescent structure 31 emitting blue light is smaller than that of the luminescent structure 31 emitting green light, which is smaller than that of the luminescent structure 31 emitting red light. Therefore, the above-mentioned arrangement, while meeting the display requirements, also facilitates the formation of the luminescent structures 31 from thin to thick during molding of the display panel, thereby avoiding display failure of the luminescent structure 31 formed earlier during the molding process.

[0071] In some optional embodiments, the light-emitting area of ​​the first light-emitting structure 31a and the light-emitting area of ​​the third light-emitting structure 31c are respectively larger than the light-emitting area of ​​the second light-emitting structure 31b, and / or the light-emitting area of ​​the third light-emitting structure 31c is smaller than the light-emitting area of ​​the first light-emitting structure 31a.

[0072] The light-emitting area can be understood as the light-emitting area corresponding to the light-emitting structure 31 in one opening 23 .

[0073] In some optional embodiments, in the display panels provided in the above embodiments of the present application, the encapsulation portion 41 overlaps the sidewall of the first portion 21 facing the opening 23 and extends along the sidewall to the side of the second portion 22 facing away from the substrate 10. Through the above arrangement, the protection effect of the light-emitting structure 31 can be ensured, and the molding of light-emitting structures 31 of different colors is facilitated.

[0074] In some optional embodiments, the plurality of encapsulation portions 41 include a first encapsulation portion 41a located on a side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation portion 41b located on a side of the second light-emitting structure 31b facing away from the substrate 10. Along the thickness direction X of the substrate 10, at least a portion of the first encapsulation portion 41a is spaced from and opposite to a surface of the second portion 22 facing away from the first portion 21, forming a first gap 91. The dimension of the first gap 91 along the thickness direction X is smaller than the thickness of the second light-emitting structure 31b.

[0075] In some optional embodiments, the second packaging portion 41 b is at least partially spaced from and opposite to the surface of the second portion 22 facing away from the first portion 21 to form a second gap 92 .

[0076] Optionally, a dimension d1 of the first gap 91 along the thickness direction X is smaller than a dimension d2 of the second gap 92 along the thickness direction X.

[0077] In some optional embodiments, the dimension of the first gap 91 along the thickness direction X is greater than or equal to the thickness of the first light-emitting structure 31 a. In some embodiments, other functional layers, such as a light extraction layer, are provided between the light-emitting structure 31 and the encapsulation portion 41 , and the dimension of the first gap 91 along the thickness direction X is greater than the thickness of the first light-emitting structure 31 a.

[0078] Part of the first packaging portion 41a is located inside the first opening 23a and protects the first light-emitting structure 31a. Part of the first packaging portion 41a is adhered to the wall of the isolation structure 20 facing the first opening 23a and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a first gap 91 with the surface of the second portion 22 facing away from the first portion 21.

[0079] Part of the second packaging portion 41b is located inside the second opening 23b and protects the second light-emitting structure 31b. Part of the second packaging portion 41b is adhered to the wall of the isolation structure 20 facing the second opening 23b and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a second gap 92 with the surface of the second portion 22 facing away from the first portion 21.

[0080] In the display panel provided in the embodiment of the present application, the first gap 91 and the second gap 92 are formed by etching away the light-emitting material layer of the light-emitting structure 31 formed between the surface of the second part 22 on the side facing away from the first part 21 and the first encapsulation layer 40 during the display panel molding process. By making the size d1 of the first gap 91 smaller than the thickness of the second light-emitting structure 31b, that is, the size d1 of the first gap 91 is smaller than the size d2 of the second gap 92, it is avoided that the light-emitting structure 31 formed first during the molding process fails to display. At the same time, it can be ensured that the thickness of the first light-emitting structure 31a formed in the first opening 23a is smaller than the thickness of the second light-emitting structure 31b formed in the second opening 23b, which is conducive to the molding of each light-emitting structure 31 in order from thin to thick.

[0081] In some optional embodiments, in a display panel provided by one embodiment of the present application, the first gap 91 is smaller than the thickness of the second light-emitting structure 31 b along the thickness direction X. This is beneficial in ensuring continuity at the edge of the first encapsulation portion 41 a during the formation of the second light-emitting structure 31 b, thereby protecting the first encapsulation portion 41 a.

[0082] In some optional embodiments, in a display panel provided by an embodiment of the present application, the orthographic projection of the first packaging portion 41a on the substrate 10 and the orthographic projection of the second packaging portion 41b on the substrate 10 are arranged at intervals, which facilitates the step-by-step molding of the first packaging portion 41a and the second packaging portion 41b.

[0083] In some optional embodiments, in the display panel provided by the embodiments of the present application, when the multiple openings 23 further include a third opening 23c, the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c, along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b, the length of the second portion 22 protruding from the first portion 21 toward the side of the third opening 23c is L3, and L2<L3, the multiple encapsulation portions 41 further include a third encapsulation portion 41c located on the side of the third light-emitting structure 31c away from the substrate 10, and the second encapsulation portion 41b is at least partially spaced from and relatively arranged to the surface of the second portion 22 away from the first portion 21 to form a third gap 93, and the size d2 of the second gap 92 is smaller than the thickness of the third light-emitting structure 31c, that is, the size d2 of the second gap 92 is smaller than the size d3 of the third gap 93, thereby avoiding display failure of the first-formed light-emitting structure 31 during the molding process.

[0084] Part of the third packaging portion 41c is located inside the third opening 23c and protects the third light-emitting structure 31c. Part of the third packaging portion 41c is adhered to the wall of the isolation structure 20 facing the third opening 23c and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a third gap 93 with the surface of the second portion 22 facing away from the first portion 21.

[0085] In the display panel provided in the embodiment of the present application, the third gap 93 is also formed by etching away the light-emitting material layer of the light-emitting structure 31 formed between the surface of the second part 22 on the side facing away from the first part 21 and the packaging part 41 during the display panel molding process. By making the size d2 of the second gap 92 smaller than the size d3 of the third gap 93, it is possible to ensure that the thickness of the second light-emitting structure 31b formed in the second opening 23b is smaller than the thickness of the third light-emitting structure 31c formed in the third opening 23c, which is conducive to the molding of each light-emitting structure 31 in order from thin to thick.

[0086] In some optional embodiments, along the thickness direction X, the size d1 of the first gap 91 is equal to the thickness D1 of the first light emitting structure 31a, the size d2 of the second gap 92 is equal to the thickness D2 of the second light emitting structure 31b, and the size d3 of the third gap 93 is equal to the thickness D3 of the third light emitting structure 31c.

[0087] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, can ensure that the light-emitting material layer formed in the first gap 91, the second gap 92 and the third gap 93 for forming the light-emitting structure 31 can be completely etched away, thereby ensuring the molding quality and display effect of the display panel and improving the reliability of the display panel.

[0088] In some optional embodiments, the second gap 92 is smaller than the thickness of the third light-emitting structure 31 c along the thickness direction X. This arrangement facilitates the formation of the light-emitting structures 31 in a sequential order from thin to thick, thereby preventing the first light-emitting structure 31 from failing during the forming process.

[0089] Optionally, the dimension of the first gap 91 along the thickness direction X is greater than or equal to the thickness of the first light-emitting structure 31 a. In some embodiments, other functional layers, such as a light extraction layer, are provided between the light-emitting structure 31 and the encapsulation portion 41 , and the dimension of the first gap 91 along the thickness direction X is greater than the thickness of the first light-emitting structure 31 a.

[0090] Optionally, the dimension of the second gap 92 along the thickness direction X is greater than or equal to the thickness of the second light-emitting structure 31 b. In some embodiments, other functional layers, such as a light extraction layer, are provided between the light-emitting structure 31 and the encapsulation portion 41, and the dimension of the second gap 92 along the thickness direction X is greater than the thickness of the second light-emitting structure 31 b.

[0091] Optionally, the dimension of the third gap 93 along the thickness direction X is greater than or equal to the thickness of the third light-emitting structure 31 c. In some embodiments, other functional layers, such as a light extraction layer, are provided between the light-emitting structure 31 and the encapsulation portion 41 , and the dimension of the third gap 93 along the thickness direction X is greater than the thickness of the third light-emitting structure 31 c.

[0092] In some optional embodiments, along the thickness direction X, the sum of the size of the first gap 91 and the thickness of the first encapsulation portion 41 a is less than the thickness of the second light emitting structure 31 b. The thickness of the first encapsulation portion 41 a may refer to the thickness of the first encapsulation portion 41 a extending to the side of the second portion 22 facing away from the substrate 10.

[0093] Optionally, along the thickness direction X, the sum of the size of the second gap 92 and the thickness of the second encapsulation portion 41 b is less than the thickness of the third light emitting structure 31 c. The thickness of the second encapsulation portion 41 b may refer to the thickness of the second encapsulation portion 41 b extending to the side of the second portion 22 facing away from the substrate 10.

[0094] The display panel provided by one embodiment of the present application utilizes the aforementioned configuration to facilitate the sequential molding of the light-emitting structures 31 from thin to thick. During this process, the light-emitting structures 31 with a later thickness requirement are patterned without damaging the encapsulation portions 41 of the light-emitting structures 31 with an earlier thickness requirement, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0095] In some optional embodiments, in the display panel provided by the embodiments of the present application, the first encapsulation layer 40 includes an inorganic material.

[0096] The inorganic material may be silicon nitride, silicon oxide, silicon oxynitride or the like, and may be formed by a CVD (Chemical Vapor Deposition) process.

[0097] Through the above arrangement, water and oxygen can be effectively blocked, ensuring the protection effect of each light-emitting structure 31.

[0098] As shown in FIG6 , in some optional embodiments, the display panel provided in the embodiments of the present application further includes a second encapsulation layer 50 , which is disposed on a side of the first encapsulation layer 40 facing away from the substrate 10 , and covers the plurality of encapsulation portions 41 .

[0099] The first encapsulation layer 40 and the second encapsulation layer 50 are used together to achieve the encapsulation effect of the display panel. The second encapsulation layer 50 is located on the side of the first encapsulation layer 40 facing away from the substrate 10. As can be seen from the foregoing, the light-emitting structures 31 of different thicknesses may cause the side of the first encapsulation layer 40 facing away from the substrate 10 to have a non-flat surface, which may easily have an adverse effect on the film layers above.

[0100] In view of this, during the preparation process of the embodiment of the present application, the size and shape of the second encapsulation layer 50 can be controlled so that the second encapsulation layer 50 is a whole-surface structure, and the surface of the second encapsulation layer 50 facing away from the substrate 10 can be parallel or approximately parallel to the plane where the substrate 10 is located, thereby reducing the impact on the subsequent film layer preparation.

[0101] In some optional embodiments, in the display panel provided by the present application, the second encapsulation layer 50 at least partially fills the first gap 91, the second gap 92, and the third gap 93. This ensures the strength and stability of each encapsulation structure while also protecting the light-emitting structure 31.

[0102] In some optional embodiments, the display panel provided in the embodiments of the present application may further optionally include the second encapsulation layer 50 including an organic material. Organic materials generally have strong leveling properties, and thus when forming the second encapsulation layer 50, it helps to achieve a smooth surface on the side of the second encapsulation layer 50 facing away from the substrate 10.

[0103] In some embodiments, the display panel also includes a third encapsulation layer 60 arranged on the side of the second encapsulation layer 50 facing away from the substrate 10. The third encapsulation layer 60 is arranged on the side of the second encapsulation layer 50 facing away from the substrate 10. The orthographic projection of the third encapsulation layer 60 on the substrate 10 can cover the orthographic projections of multiple encapsulation parts 41 on the substrate 10.

[0104] Similar to the second encapsulation layer 50, the third encapsulation layer 60 can also be a full-surface structure and can cover multiple encapsulation portions 41. The first encapsulation layer 40, the second encapsulation layer 50, and the third encapsulation layer 60 can together form a thin film encapsulation structure to improve the encapsulation effect of the display panel.

[0105] Optionally, the third encapsulation layer 60 includes an inorganic material, which effectively improves the protection effect on the light emitting structure 31 .

[0106] As shown in Figure 7, in some optional embodiments, in the display panel provided by an embodiment of the present application, on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the first light-emitting structure 31a, the distance from the edge of the isolation structure 20 located around the first light-emitting structure 31a to the edge of the end of the first packaging portion 41a parallel to the plane where the substrate 10 is located is M1, and on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the second light-emitting structure 31b, the distance from the edge of the isolation structure 20 located around the second light-emitting structure 31b to the edge of the end of the second packaging portion 41b parallel to the plane where the substrate 10 is located is M2, and M1<M2.

[0107] Optionally, the multiple openings 23 further include a third opening 23c, the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c, and along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b, and the multiple encapsulation parts 41 further include a third encapsulation part 41c located on the side of the third light-emitting structure 31c away from the substrate 10. On a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the third light-emitting structure 31c, the distance from the edge of the isolation structure 20 located around the third light-emitting structure 31c to the edge of the end of the third encapsulation part 41c parallel to the plane where the substrate 10 is located is M3, and M2<M3.

[0108] As shown in Figure 8, in some optional embodiments, an embodiment of the present application provides a display panel, wherein the end of the first packaging portion 41a is provided with a first surface, and the end of the second packaging portion 41b is provided with a second surface. On a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the first light-emitting structure 31a, the inclination angle of the first surface relative to the plane where the substrate 10 is located is A1, and on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the second light-emitting structure 31b, the inclination angle of the second surface relative to the plane where the substrate 10 is located is A2, and A1<A2.

[0109] Optionally, the multiple openings 23 further include a third opening 23c, the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c, and along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b, and the multiple encapsulation parts 41 further include a third encapsulation part 41c located on the side of the third light-emitting structure 31c away from the substrate 10, and a third surface is provided at the end of the third encapsulation part 41c. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the third light-emitting structure 31c, the inclination angle of the third surface relative to the plane of the substrate 10 is A3, and A2<A3.

[0110] In some optional embodiments, in a display panel provided by an embodiment of the present application, the light-emitting structure 31 includes an organic material layer 311 and a first electrode 312 arranged on the side of the organic material layer 311 facing away from the substrate 10, the material of the isolation structure 20 includes a metal material, and the first electrode 312 is in contact and connected with the isolation structure 20.

[0111] The organic material layer 311 may include a hole injection layer (HIL), a hole transport layer (HTL), a light emitting layer, an electron injection layer (EIL), and an electron transport layer (ETL) that are stacked.

[0112] The material of the first electrode 312 can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the aforementioned metal materials, such as magnesium-silver alloy (Mg / Ag) and lithium-aluminum alloy (Li / Al). This embodiment does not impose any limitation on this.

[0113] Due to the formation of the isolation structure 20 , multiple first electrodes 312 can be formed by direct evaporation or other methods without the need for a fine metal mask. This helps reduce the mask cost required for display panel preparation and is suitable for large-scale production.

[0114] On this basis, in order to enable at least a portion of the first electrode 312 to obtain a corresponding potential signal, the first electrode 312 is in contact and connected to the isolation structure 20. This design allows the first electrode 312 to be electrically connected to the first portion 21, and then a specific potential signal is transmitted to the first electrode 312 through the first portion 21, thereby achieving drive control of the first electrode 312.

[0115] In some optional embodiments, the display panel provided in the embodiments of the present application further includes a second electrode 80, which is located between the substrate 10 and the light-emitting functional layer 30. The first electrode 312 can be a cathode, and the second electrode 80 can be an anode. The first electrode 312 and the second electrode 80 jointly drive the light-emitting structure 31 to achieve light-emitting display.

[0116] The second electrode 80 is generally made of a material with a high work function to improve hole injection efficiency, and can be made of gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO), or a transparent conductive polymer (such as polyaniline). For example, the second electrode 80 can be made of an ITO-Ag-ITO composite material, without particular limitation.

[0117] As some optional embodiments, in a display panel provided by one embodiment of the present application, the thickness of the organic material layer 311 of the second light-emitting structure 31b is greater than the thickness of the organic material layer 311 of the first light-emitting structure 31a. In some implementations, the thickness of the first electrode 312 of the first light-emitting structure 31a can also be less than the thickness of the first electrode 312 of the second light-emitting structure 31b. This facilitates the evaporation of the film layers of the subsequently formed light-emitting structure, ensuring that the film layers are continuous at the edge of the encapsulation portion, thereby protecting the previously formed light-emitting structure and improving product yield.

[0118] Optionally, the opening 23 further includes a third opening 23c, and the light emitting structure 31 further includes a third light emitting structure 31c located in the third opening 23c. The thickness of the organic material layer 311 of the third light emitting structure 31c is greater than the thickness of the organic material layer 311 of the second light emitting structure 31b.

[0119] As shown in Figure 5, in some optional embodiments, the first part 21 includes a first sublayer 211 and a second sublayer 212 arranged in sequence in a direction away from the substrate 10, the first sublayer 211 protrudes toward the side of the opening 23 and the second sublayer 212 is arranged, and the first electrode 312 is in contact and connected with at least one of the first sublayer 211 and the second sublayer 212.

[0120] The first electrode 312 may be in contact with and connected to the first sub-layer 211 . Of course, the first electrode 312 may also be in contact with and connected to the first sub-layer 211 and the second sub-layer 212 simultaneously.

[0121] As shown in FIG9 , in a second aspect, an embodiment of the present application provides a display device, comprising the display panel in any of the aforementioned embodiments.

[0122] The flexible display device provided in the embodiment of the present application has the beneficial effects of the display panel in any of the aforementioned embodiments. For details, please refer to the aforementioned description of the beneficial effects of the display panel, which will not be repeated in the embodiment of the present application.

[0123] In a third aspect, as shown in FIG10 to FIG17 , an embodiment of the present application provides a method for manufacturing a display panel, which can be used to form the display panels provided in the above embodiments. The manufacturing method includes:

[0124] S100 , forming an isolation structure 20 on one side of the substrate 10 in the thickness direction X. The isolation structure 20 encloses a plurality of openings 23 , and the plurality of openings 23 include a first opening 23 a and a second opening 23 b .

[0125] S200 , forming a first light emitting structure layer 110 and a first packaging material layer 120 with a first thickness on the substrate 10 and the isolation structure 20 .

[0126] S300 , removing the first light emitting structure layer 110 and at least a portion of the first packaging material layer 120 outside the first opening 23 a to form a first light emitting structure 31 a located in the first opening 23 a and a first packaging portion 41 a covering the first light emitting structure 31 a ;

[0127] S400, forming a second light emitting structure layer and a second packaging material layer of a second thickness on the substrate 10 and the isolation structure 20, where the second thickness is greater than the first thickness;

[0128] S500 , removing the second light emitting structure layer and at least a portion of the second packaging material layer outside the second opening 23b to form a second light emitting structure 31b located in the second opening 23b and a second packaging portion 41b covering the first light emitting structure 31a .

[0129] As shown in Figures 11 and 12, in step S100, the pixel defining layer 70 and the plurality of second electrodes 80 may have been formed on the substrate 10, or the pixel defining layer 70 and the plurality of second electrodes 80 may be pre-formed on the substrate 10 before step S100. The isolation structure 20 encloses and forms a plurality of openings 23. For the specific structure of the isolation structure 20, reference may be made to the structural forms of the display panels provided in the above-mentioned embodiments. When the isolation structure 20 is formed, two isolation layers may be formed in sequence, and then the isolation layers may be patterned to form a patterned isolation structure 20. The formed isolation structure 20 may include a first portion 21 and a second portion 22 sequentially arranged in a direction away from the substrate 10, and the orthographic projection of the first portion 21 on the substrate 10 is located within the orthographic projection of the second portion 22 on the substrate 10.

[0130] As shown in Figure 13, in step S200, the first light-emitting structure layer 110 can be formed on the substrate 10 and the isolation structure 20 by direct evaporation or the like. Due to the structural form of the isolation structure 20, part of the first light-emitting structure layer 110 falls to each opening 23, and part falls to the side wall of the isolation structure 20 and climbs to the side of the isolation structure 20 away from the substrate 10, and the first packaging material layer 120 is formed on the first light-emitting structure layer.

[0131] The first light emitting structure layer 110 may include a multi-layer structure, and may optionally include a first light emitting material layer forming the organic material layer 311 and a first electrode material layer forming the first electrode 312 .

[0132] Exemplarily, the first light emitting structure layer 110 may include an organic material capable of emitting blue light.

[0133] As shown in Figures 14 to 16, in step S300, a colloid 130 may be provided, and a portion of the colloid 130 may be removed using processes such as exposure and development. As shown in Figure 15, the first opening 23a and the surrounding colloid 130 are retained. The retained colloid 130 is used as a mask to etch away the first light-emitting structure layer 110 and at least a portion of the first encapsulation material layer 120 outside the first opening, thereby forming a first light-emitting structure 31a located within the first opening 23a and a first encapsulation portion 41a covering the first light-emitting structure 31a. Furthermore, the removal of the first light-emitting structure layer 110 outside the first opening 23a allows the first encapsulation portion 41a to be at least partially spaced from and positioned opposite the surface of the second portion 22 of the isolation structure 20 facing away from the first portion 21, thereby forming a first gap 91.

[0134] In step S400, a second light-emitting structure layer can also be formed on the substrate 10 and the isolation structure 20 by direct evaporation or other methods. Due to the structural form of the isolation structure 20, the second light-emitting structure layer is disconnected at the isolation structure 20, with part of it falling to the openings 23, and part of it falling to the side wall of the isolation structure 20 and climbing to the side of the isolation structure 20 away from the substrate 10, and a second packaging material layer is formed on the second light-emitting structure layer.

[0135] The second light emitting structure layer may include a multi-layer structure, and may optionally include a second light emitting material layer forming the organic material layer 311 and a first electrode material layer forming the first electrode 312 .

[0136] Exemplarily, the second light emitting structure layer may include an organic material capable of emitting green light.

[0137] The material of the second encapsulation material layer may be the same as that of the first encapsulation material layer 120 .

[0138] Since the thickness of the second light-emitting structure layer is greater than the thickness of the first light-emitting structure layer 110, it is correspondingly greater than the size of the first gap 91, that is, the size of the first gap 91 is smaller than the thickness of the second light-emitting structure 31b. When the second light-emitting structure layer is formed, the organic material layer 311 of the second light-emitting structure layer can completely fill the opening 23 of the first gap 91, so that it can continuously cover the boundary of the first gap 91, thereby making the first electrode material continuous at the opening 23 of the first gap 91. In the process of patterning the second light-emitting structure 31b, the first packaging portion 41a formed previously is protected to prevent failure of the first light-emitting structure 31a.

[0139] As shown in FIG. 17 , in step S500, exposure, development, etching and other processes can also be used to remove the second light-emitting structure layer and at least part of the second packaging material layer outside the second opening 23 b to form a second light-emitting structure 31 b located in the second opening 23 b and a second packaging portion 41 b covering the second light-emitting structure 31 b.

[0140] Since the second light-emitting structure 31b is formed later than the first light-emitting structure 31a, the previous exposure, development, etching and other operations will cause the length of the second portion 22 protruding from the first portion 21 toward the first opening 23a and toward the second opening 23b to be different. Specifically, the length of the second portion 22 of the formed display panel protruding from the first portion 21 toward the side of the first opening 23a is L1, and the length of the second portion 22 protruding from the first portion 21 toward the side of the second opening 23b is L2, and L1<L2.

[0141] The display panel manufacturing method provided in the embodiments of the present application can be used to form the display panels provided in the above embodiments. The manufacturing method provided in the embodiments of the present application can form the light-emitting structure 31 and the encapsulation portion 41 by direct evaporation or other methods, which helps reduce the mask cost required for display panel manufacturing and is suitable for large-scale production. A first light-emitting structure 31a and a first packaging part 41a of one luminous color can be formed in the area corresponding to the first opening 23a first, and then a second light-emitting structure 31b and a second packaging part 41b of another luminous color can be formed in the area corresponding to the second opening 23b. Since the thickness of the first light-emitting structure layer 110 used to form the first light-emitting structure 31a is less than the thickness of the second light-emitting structure layer used to form the second light-emitting structure 31b, that is, the thickness of the first gap 91 is less than the thickness of the second light-emitting structure layer, when the first electrode material layer and the second packaging material layer are formed on the second light-emitting structure layer, the second light-emitting structure layer can completely fill the first gap 91 formed between the first packaging part 41b and the isolation structure 20, so that there will be no step difference between the first electrode material layer and the second packaging material layer. The first electrode material layer wraps and covers the first packaging part 41a. In the process of removing part of the second packaging material layer by etching and other processes to form the second packaging part 41b, the first electrode material layer protects the first packaging part 41a and will not cause etching damage to the first packaging part 41a, thereby reducing the display failure probability of the part of the light-emitting structure 31 of the display panel after molding, and improving the reliability of the molded display panel.

[0142] Optionally, the second light emitting structure layer is removed so that at least a portion of the second encapsulation portion 41 b is spaced apart from and opposite to the surface of the second portion 22 of the isolation structure 20 facing away from the first portion 21 and forms a second gap 92 .

[0143] In some optional embodiments, in the step of forming a second light emitting structure layer and a second packaging material layer with a second thickness on the substrate 10 and the isolation structure 20 , the second light emitting structure layer is continuously disposed at the edge of the first packaging portion 41 a .

[0144] As shown in FIG18 , when the plurality of openings 23 include a third opening 23c, the molding method may further include molding a third light-emitting structure layer and a third encapsulation material layer having a third thickness, where the third thickness is greater than the second thickness, on the substrate 10 and the isolation structure 20. The third light-emitting structure layer and at least a portion of the third encapsulation material layer outside the third opening 23c are removed to form a third light-emitting structure 31c located within the third opening 23c and a third encapsulation portion 41c disposed to cover the third light-emitting structure 31c.

[0145] Similarly, a third light-emitting structure layer can be formed on the substrate 10 and the isolation structure 20 by direct evaporation or other methods, and a third packaging material layer can be formed on the third light-emitting structure layer. Due to the structural form of the isolation structure 20, the third light-emitting structure layer is disconnected at the isolation structure 20, with part of it falling to the openings 23, and part of it falling to the side wall of the isolation structure 20 and climbing to the side of the isolation structure 20 facing away from the substrate 10.

[0146] The third light emitting structure layer may include a multi-layer structure, and may optionally include a third light emitting material layer forming the organic material layer 311 and a metal layer forming the first electrode 312 .

[0147] Exemplarily, the third light emitting structure layer may include an organic material capable of emitting green light.

[0148] The material of the third encapsulation material layer may be the same as that of the first encapsulation material layer 120 .

[0149] Since the thickness of the third light-emitting structure layer is greater than that of the second light-emitting structure layer, it is correspondingly greater than the size of the second gap 92, that is, the size of the second gap 92 is smaller than the thickness of the third light-emitting structure 31c. When the third light-emitting structure layer is formed, the organic material layer 311 of the third light-emitting structure layer can completely fill the second gap 92 and the first gap 91, so that it can continuously cover the boundary between the first gap 91 and the second gap 92, thereby making the first electrode material continuous at the second gap 92 and the first gap 91. In the process of patterning the third light-emitting structure 31c, the first packaging portion 41a and the second packaging portion 41b formed previously are protected to prevent failure of the first light-emitting structure 31a and the second light-emitting structure 31b.

[0150] When removing the third light-emitting structure layer and at least part of the third packaging material layer outside the third opening 23c, exposure, development and other processes can also be used to remove the third light-emitting structure layer and at least part of the third packaging material layer outside the third opening 23c to form a third light-emitting structure 31c located in the third opening 23c and a third packaging part 41c set to cover the third light-emitting structure 31c.

[0151] Since the third light-emitting structure 31c is formed later than the second light-emitting structure 31b, the previous exposure and development operations will cause the length of the second portion 22 protruding from the first portion 21 toward the second opening 23b and toward the third opening 23c to be different. Specifically, the length of the second portion 22 of the molded display panel protruding from the first portion 21 toward the side of the third opening 23c can be L3, L2<L3, and the thickness of the first light-emitting structure 31a of the above-mentioned molded display panel is less than the thickness of the second light-emitting structure 31b and less than the thickness of the third light-emitting structure 31c.

[0152] As shown in Figures 1 to 8, an embodiment of the present application also provides a display panel, including a substrate 10, an isolation structure 20, a light-emitting functional layer 30 and a first encapsulation layer 40. The isolation structure 20 is arranged on one side of the substrate 10 in its own thickness direction X. The isolation structure 20 encloses a plurality of openings 23, and the plurality of openings 23 include a first opening 23a and a second opening 23b. The isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10. The orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10. The light-emitting functional layer 30 is provided on the substrate 10, and the light-emitting functional layer 30 includes a plurality of light-emitting structures 31. The plurality of light-emitting structures 31 include a first light-emitting structure 31a provided in the first opening 23a and a second light-emitting structure 31b provided in the second opening 23b. Along the thickness direction X, the thickness D2 of the second light-emitting structure 31b is greater than the thickness D1 of the first light-emitting structure 31a. The first encapsulation layer 40 includes a plurality of encapsulation parts 41 provided corresponding to the light-emitting structures 31. The encapsulation parts 41 are located on the side of the light-emitting structure 31 away from the substrate 10. The plurality of encapsulation parts 41 include a plurality of encapsulation parts 41 located on the side of the light-emitting structure 31 away from the substrate 10. A first encapsulation portion 41a is located on the side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation portion 41b is located on the side of the second light-emitting structure 31b facing away from the substrate 10; wherein, along the thickness direction X, the first encapsulation portion 41a is at least partially spaced from and oppositely arranged to the surface of the second portion 2220 facing away from the first portion 21 to form a first gap 91, and the second encapsulation portion 41b is at least partially spaced from and oppositely arranged to form a second gap 92 from the surface of the second portion 2220 facing away from the first portion 21, and the size of the first gap 91 is smaller than the size of the second gap 92.

[0153] The multiple packaging parts 41 may be spaced apart from each other, that is, there are gaps between the multiple packaging parts 41 .

[0154] In a display panel provided by one embodiment of the present application, the number of openings 23 can be set according to the display requirements of the display panel. The number of first openings 23a and the number of second openings 23b are both multiple, and the number of first openings 23a can be equal to the number of second openings 23b. Of course, the number of one of the first openings 23a and the second openings 23b can also be greater than the other.

[0155] The light emitted by the first light emitting structure 31a and the second light emitting structure 31b can be different. For example, the light emitted by the first light emitting structure 31a can include blue light, and the light emitted by the second light emitting structure 31b can include green light. Of course, the light emitted by the first light emitting structure 31a can also include green light, and the light emitted by the second light emitting structure 31b can include red light.

[0156] The isolation structure 20 may be located on the pixel defining layer 70 , or the isolation structure 20 may be located on the planarization layer. The location of the isolation structure 20 is not specifically limited herein.

[0157] Optionally, the isolation structure 20 and the light-emitting functional layer 30 are located on the same side of the substrate 10, and the isolation structure 20 encloses a plurality of openings 23. The embodiment of the present application does not limit the size and shape of the isolation structure 20. Optionally, the orthographic projection of the isolation structure 20 on the substrate 10 can be a mesh structure. Of course, in some embodiments, the orthographic projection of the isolation structure 20 on the substrate 10 can also be a plurality of independent annular structures, and each independently arranged annular structure is correspondingly provided with an opening 23. The above-mentioned isolation structures 20 in various forms can meet the use requirements of the display panel.

[0158] The plurality of openings 23 enclosed by the isolation structure 20 may correspond to the light emitting structures 31 one to one, with one light emitting structure 31 disposed in one opening 23. Alternatively, multiple light emitting structures 31 may be disposed in one opening 23, for example, multiple light emitting structures 31 of the same color may be disposed in one opening 23.

[0159] The first encapsulation layer 40 can be used to protect the light emitting structure 31 to reduce the probability of water, oxygen, etc. invading the light emitting structure 31 , thereby improving the reliability of the light emitting structure 31 .

[0160] The first encapsulation layer 40 includes multiple encapsulation portions 41, each of which is provided corresponding to each light-emitting structure 31 to achieve encapsulation of the light-emitting structure 31. In some embodiments, multiple light-emitting structures 31 are provided in a one-to-one correspondence with multiple encapsulation portions 41, thereby achieving independent encapsulation of the light-emitting structures 31. Alternatively, one encapsulation portion 41 is provided corresponding to multiple light-emitting structures 31, and multiple light-emitting structures 31 are encapsulated by one encapsulation portion 41. For example, multiple light-emitting structures 31 of the same color are encapsulated by one encapsulation portion 41.

[0161] Part of the first packaging portion 41a is located inside the first opening 23a and protects the first light-emitting structure 31a. Part of the first packaging portion 41a is adhered to the wall of the isolation structure 20 facing the first opening 23a and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a first gap 91 with the surface of the second portion 22 facing away from the first portion 21.

[0162] Part of the second packaging portion 41b is located inside the second opening 23b and protects the second light-emitting structure 31b. Part of the second packaging portion 41b is adhered to the wall of the isolation structure 20 facing the second opening 23b and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a second gap 92 with the surface of the second portion 22 facing away from the first portion 21.

[0163] In the display panel provided by the embodiment of the present application, since the thickness D2 of the second light-emitting structure 31b is greater than the thickness D1 of the first light-emitting structure 31a, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along the direction away from the substrate 10, and along the thickness direction X, the first packaging part 41a is at least partially spaced from the surface of the second part 22 away from the first part 21 and is arranged relative to each other to form a first gap 91, and the second packaging part 41b is at least partially spaced from the surface of the second part 22 away from the first part 21 and is arranged relative to each other to form a second gap 92, and the size of the first gap 91 is smaller than the size of the second gap 92, so that when the display panel is molded, each light-emitting structure 31 can be molded in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has already been molded during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0164] In some optional embodiments, the size of the first gap 91 is smaller than the thickness of the second light-emitting structure 31b. This configuration prevents display failure of the light-emitting structure 31 formed earlier during the display panel molding process. It also ensures that the thickness of the first light-emitting structure 31a formed in the first opening 23a is smaller than the thickness of the second light-emitting structure 31b formed in the second opening 23b, thereby facilitating the molding of the light-emitting structures 31 in order from thin to thick.

[0165] In some optional embodiments, the orthographic projection of the second encapsulation portion 41 b on the substrate 10 and the orthographic projection of the first encapsulation portion 41 a on the substrate 10 are spaced apart.

[0166] In some optional embodiments, the multiple openings 23 further include a third opening 23c, and the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c. Along the thickness direction X, the thickness D3 of the third light-emitting structure 31c is greater than the thickness D2 of the second light-emitting structure 31b.

[0167] The plurality of encapsulation portions 41 further include a third encapsulation portion 41c located on a side of the third light-emitting structure 31c facing away from the substrate 10. The third encapsulation portion 41c is at least partially spaced from and opposite to a surface of the isolation structure 20 facing away from the substrate 10, forming a third gap 93. The dimension of the second gap 92 along the thickness direction X is smaller than the dimension of the third gap 93 along the thickness direction X.

[0168] In some optional embodiments, in a display panel provided by one embodiment of the present application, the size of the second gap 92 is smaller than the thickness D3 of the third light-emitting structure 31c. That is, the size d2 of the second gap 92 is smaller than the size d3 of the third gap 93, thereby preventing the display failure of the first-molded light-emitting structure 31 during the molding process.

[0169] In some optional embodiments, along the thickness direction X of the substrate 10, the size of the first gap 91 is greater than or equal to the thickness D1 of the first light-emitting structure 31a, the size of the second gap 92 is greater than or equal to the thickness D2 of the second light-emitting structure 31b, and the size of the third gap 93 is greater than or equal to the thickness D3 of the third light-emitting structure 31c.

[0170] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, can ensure that the light-emitting material layer formed in the first gap 91, the second gap 92 and the third gap 93 for forming the light-emitting structure 31 can be completely etched away, thereby ensuring the molding quality and display effect of the display panel and improving the reliability of the display panel.

[0171] Optionally, the color of the light emitted by the third light emitting structure 31 c may be different from that of the first light emitting structure 31 a and the second light emitting structure 31 b .

[0172] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, enables that when the multiple light-emitting structures 31 of the display panel have three or more thickness specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has already been formed during patterning, thereby avoiding the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0173] It is understandable that in the display panel provided by the embodiment of the present application, the luminous colors of the first light emitting structure 31a, the second light emitting structure 31b, and the third light emitting structure 31c can be the same or different from one another, or all three can be different. Specific settings can be made according to display requirements.

[0174] In some optional embodiments, in the display panel provided by the embodiments of the present application, the first light-emitting structure 31 a , the second light-emitting structure 31 b , and the third light-emitting structure 31 c have different luminous colors.

[0175] That is, the first light emitting structure 31 a , the second light emitting structure 31 b and the third light emitting structure 31 c all emit different colors.

[0176] The display panel provided in the embodiment of the present application, through the above-mentioned configuration, can effectively meet the diversified display requirements of the display panel. Furthermore, the above-mentioned configuration facilitates step-by-step molding of the display panel according to color during molding. For example, a light-emitting structure 31 of a corresponding light-emitting color with a thinner thickness can be molded first, followed by a light-emitting structure 31 of a corresponding light-emitting color with a second-thicker thickness, and finally, the light-emitting structure 31 of a corresponding light-emitting color with the thickest thickness. This effectively avoids damage to the encapsulation portion 41 of the light-emitting structure 31 and improves the reliability of the display panel.

[0177] In some optional embodiments, in the display panel provided by the embodiments of the present application, the light emitted by the first light emitting structure 31a includes blue light, the light emitted by the second light emitting structure 31b includes green light, and the light emitted by the third light emitting structure 31c includes red light.

[0178] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, can effectively meet the display requirements of the display panel. Furthermore, based on the characteristics of the luminescent materials of different luminescent colors and the display panel's requirements for the luminescent brightness of the different color luminescent structures 31, the thickness of the luminescent structure 31 emitting blue light is smaller than that of the luminescent structure 31 emitting green light, which is smaller than that of the luminescent structure 31 emitting red light. Therefore, the above-mentioned arrangement, while meeting the display requirements, also facilitates the formation of the luminescent structures 31 from thin to thick during molding of the display panel, thereby avoiding display failure of the luminescent structure 31 formed earlier during the molding process.

[0179] In some optional embodiments, the light emitting structure 31 includes an organic material layer 311 and a first electrode 312 arranged on the side of the organic material layer 311 facing away from the substrate 10. The material of the isolation structure 20 includes a metal material, and the first electrode 312 is in contact with the isolation structure 20.

[0180] Optionally, the isolation structure 20 includes a first portion 21 and a second portion 22 sequentially arranged in a direction away from the substrate 10 , and the orthographic projection of the first portion 21 on the substrate 10 is located within the orthographic projection of the second portion 22 on the substrate 10 .

[0181] Optionally, the plurality of light-emitting structures 31 include a first light-emitting structure 31a, a second light-emitting structure 31b, and a third light-emitting structure 31c, and the thickness of the organic material layer 311 of the second light-emitting structure 31b is greater than the thickness of the organic material layer 311 of the first light-emitting structure 31a. In some embodiments, the thickness of the first electrode 312 of the first light-emitting structure 31a may be less than the thickness of the first electrode 312 of the second light-emitting structure 31b.

[0182] Optionally, the thickness of the organic material layer 311 of the third light emitting structure 31 c is greater than the thickness of the organic material layer 311 of the second light emitting structure 31 b .

[0183] Optionally, the thickness of the first electrode 312 of the third light emitting structure 31 c may be greater than the thickness of the first electrode 312 of the second light emitting structure 31 b .

[0184] In some optional embodiments, the second portion 22 protrudes from the first portion 21 by a length L1 on the side facing the first opening 23a, and the second portion 22 protrudes from the first portion 21 by a length L2 on the side facing the second opening 23b, where L1<L2.

[0185] Through the above-mentioned arrangement, when the display panel is formed, each light-emitting structure 31 can be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has been formed during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0186] In some optional embodiments, the multiple openings 23 further include a third opening 23c, and the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c. Along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b, and the length of the edge of the second part 22 protruding toward the third opening 23c from the first part 21 is L3, and L2<L3.

[0187] Through the above arrangement, when the multiple light-emitting structures 31 of the display panel have three or more thickness specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has been formed during patterning, thereby avoiding the display failure probability of some light-emitting structures 31 and improving the reliability of the display panel.

[0188] As shown in Figures 1 to 6, the embodiment of the present application further provides a display panel, including a substrate 10, an isolation structure 20, a light-emitting functional layer 30, and a first encapsulation layer 40. The isolation structure 20 is arranged on one side of the substrate 10 in its own thickness direction X. The isolation structure 20 encloses a plurality of openings 23, and the plurality of openings 23 include a first opening 23a and a second opening 23b. The light-emitting functional layer 30 is arranged on the substrate 10, and the light-emitting functional layer 30 includes a plurality of light-emitting structures 31. The plurality of light-emitting structures 31 include a first light-emitting structure 31a arranged in the first opening 23a and a second light-emitting structure 31b arranged in the second opening 23b. The first encapsulation layer 40 includes a light-emitting structure 31 arranged corresponding to the light-emitting structure 31. Multiple encapsulation parts 41, the encapsulation part 41 is located on the side of the light-emitting structure 31 facing away from the substrate 10, the encapsulation part 41 overlaps the side wall of the isolation structure 20 facing the opening and extends along the side wall to the side of the isolation structure 20 facing away from the substrate 10, the multiple encapsulation parts 41 are arranged at intervals from each other and include a first encapsulation part 41a located on the side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation part 41b located on the side of the second light-emitting structure 31b facing away from the substrate 10; wherein, along the thickness direction X, the first encapsulation part 41a is at least partially spaced from and arranged relative to the surface of the isolation structure 20 facing away from the substrate 10 to form a first gap, and the size of the first gap along the thickness direction X is smaller than the thickness of the second light-emitting structure 31b.

[0189] The display panel provided by one embodiment of the present application, through the above-mentioned arrangement, enables each light-emitting structure 31 to be formed in order from thin to thick during the molding of the display panel. During this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging portion 41 of the light-emitting structure 31 with the previous thickness requirement that has already been molded during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0190] In some optional embodiments, the second packaging portion is at least partially spaced from and arranged relative to the surface of the isolation structure facing away from the substrate to form a second gap, the multiple openings also include a third opening, the multiple light-emitting structures also include a third light-emitting structure arranged in the third opening, and the dimension of the second gap along the thickness direction is smaller than the thickness of the third light-emitting structure.

[0191] As shown in Figures 1 to 6, an embodiment of the present application also provides a display panel, including a substrate 10, an isolation structure 20, a light-emitting functional layer 30 and a first encapsulation layer 40. The isolation structure 20 is arranged on one side of the substrate 10 in its own thickness direction X. The isolation structure 20 encloses a plurality of openings 23, and the plurality of openings 23 include a first opening 23a and a second opening 23b. The isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10. The orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10; the length of the second part 22 protruding from the first part 21 toward the side of the first opening 23a is L1, and the length of the second part 22 protruding from the first part 21 toward the side of the second opening 23b is L2, and L1<L2. The light-emitting functional layer 30 is provided on the substrate 10, and the light-emitting functional layer 30 includes a plurality of light-emitting structures 31. The plurality of light-emitting structures 31 include a first light-emitting structure 31a provided in the first opening 23a and a second light-emitting structure 31b provided in the second opening 23b. The first encapsulation layer 40 includes a plurality of encapsulation portions 41 provided corresponding to the light-emitting structures 31. The encapsulation portion 41 is located on a side of the light-emitting structure 31 facing away from the substrate 10. The encapsulation portion 41 overlaps the side wall of the first portion 21 facing the opening 23 and extends along the side wall to the side of the second portion 22 facing away from the substrate 10. The plurality of encapsulation portions 41 are connected to each other. They are spaced apart from each other and include a first encapsulation portion 41a located on the side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation portion 41b located on the side of the second light-emitting structure 31b facing away from the substrate 10, wherein, along the thickness direction X, the first encapsulation portion 41a is at least partially spaced apart from and arranged opposite to the surface of the second portion 22 facing away from the first portion 21 to form a first gap 91, and the second encapsulation portion 41b is at least partially spaced apart from and arranged opposite to the surface of the second portion 22 facing away from the first portion 21 to form a second gap 92, and the size of the first gap 91 is smaller than the size of the second gap 92.

[0192] The number of openings 23 can be set according to the display requirements of the display panel. The number of first openings 23a and the number of second openings 23b are both multiple. The number of first openings 23a can be equal to the number of second openings 23b. Of course, the number of one of the first openings 23a and the second openings 23b can also be greater than the other.

[0193] The light emitted by the first light emitting structure 31a and the second light emitting structure 31b can be different. For example, the light emitted by the first light emitting structure 31a can include blue light, and the light emitted by the second light emitting structure 31b can include green light. Of course, the light emitted by the first light emitting structure 31a can also include green light, and the light emitted by the second light emitting structure 31b can include red light.

[0194] The first encapsulation layer 40 can be used to protect the light emitting structure 31 to reduce the probability of water, oxygen, etc. invading the light emitting structure 31 , thereby improving the reliability of the light emitting structure 31 .

[0195] The first encapsulation layer 40 includes multiple encapsulation portions 41, each of which is provided corresponding to each light-emitting structure 31 to achieve encapsulation of the light-emitting structure 31. In some embodiments, multiple light-emitting structures 31 are provided in a one-to-one correspondence with multiple encapsulation portions 41, thereby achieving independent encapsulation of the light-emitting structures 31. Alternatively, one encapsulation portion 41 is provided corresponding to multiple light-emitting structures 31, and multiple light-emitting structures 31 are encapsulated by one encapsulation portion 41. For example, multiple light-emitting structures 31 of the same color are encapsulated by one encapsulation portion 41.

[0196] Part of the first packaging portion 41a is located inside the first opening 23a and protects the first light-emitting structure 31a. Part of the first packaging portion 41a is adhered to the wall of the isolation structure 20 facing the first opening 23a and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a first gap 91 with the surface of the second portion 22 facing away from the first portion 21.

[0197] Part of the second packaging portion 41b is located inside the second opening 23b and protects the second light-emitting structure 31b. Part of the second packaging portion 41b is adhered to the wall of the isolation structure 20 facing the second opening 23b and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a second gap 92 with the surface of the second portion 22 facing away from the first portion 21.

[0198] In the display panel provided in the embodiment of the present application, the first gap 91 and the second gap 92 are formed by etching away the light-emitting material layer of the light-emitting structure 31 formed between the surface of the second part 22 on the side facing away from the first part 21 and the first encapsulation layer 40 during the display panel molding process. By making the size d1 of the first gap 91 smaller than the thickness of the second light-emitting structure 31b, that is, the size d1 of the first gap 91 is smaller than the size d2 of the second gap 92, it is avoided that the light-emitting structure 31 formed first during the molding process fails to display. At the same time, it can be ensured that the thickness of the first light-emitting structure 31a formed in the first opening 23a is smaller than the thickness of the second light-emitting structure 31b formed in the second opening 23b, which is conducive to the molding of each light-emitting structure 31 in order from thin to thick.

[0199] In some optional embodiments, an embodiment of the present application provides a display panel, wherein the first encapsulation portion 41a is spaced apart from the orthographic projection of the second encapsulation portion 41b on the substrate 10; the multiple openings 23 further include a third opening 23c, and the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c. Along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b. The length of the second portion 22 protruding from the first portion 21 toward the side of the third opening 23c is L3. When L2<L3, the multiple encapsulation portions 41 further include a third encapsulation portion 41c located on the side of the third light-emitting structure 31c away from the substrate 10. The third encapsulation portion 41c is at least partially spaced apart from and opposite to the surface of the second portion 22 away from the first portion 21 to form a third gap 93. The size of the second gap 92 is smaller than the size of the third gap 93.

[0200] Part of the third packaging portion 41c is located inside the third opening 23c and protects the third light-emitting structure 31c. Part of the third packaging portion 41c is adhered to the wall of the isolation structure 20 facing the third opening 23c and at least partially climbs to the side of the isolation structure 20 facing away from the substrate 10 in the thickness direction X, and forms a third gap 93 with the surface of the second portion 22 facing away from the first portion 21.

[0201] In the display panel provided in the embodiment of the present application, the third gap 93 is also formed by etching away the light-emitting material layer of the light-emitting structure 31 formed between the surface of the second part 22 on the side facing away from the first part 21 and the packaging part 41 during the display panel molding process. By making the size d2 of the second gap 92 smaller than the size d3 of the third gap 93, it is possible to ensure that the thickness of the second light-emitting structure 31b formed in the second opening 23b is smaller than the thickness of the third light-emitting structure 31c formed in the third opening 23c, which is conducive to the molding of each light-emitting structure 31 in order from thin to thick.

[0202] Optionally, along the thickness direction X, the thickness of the second light emitting structure 31 b is greater than the thickness of the first light emitting structure 31 a and / or the thickness of the third light emitting structure 31 c is greater than the thickness of the second light emitting structure 31 b.

[0203] Optionally, along the thickness direction X, the size of the first gap 91 is greater than or equal to the thickness of the first light emitting structure 31a and / or the size of the second gap 92 is greater than or equal to the thickness of the second light emitting structure 31b and / or the size of the third gap 93 is greater than or equal to the thickness of the third light emitting structure 31c.

[0204] Optionally, the color of the light emitted by the third light emitting structure 31 c may be different from that of the first light emitting structure 31 a and the second light emitting structure 31 b .

[0205] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, enables that when the multiple light-emitting structures 31 of the display panel have three or more thickness specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has already been formed during patterning, thereby avoiding the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0206] It is understandable that in the display panel provided by the embodiment of the present application, the luminous colors of the first light emitting structure 31a, the second light emitting structure 31b, and the third light emitting structure 31c can be the same or different from one another, or all three can be different. Specific settings can be made according to display requirements.

[0207] In some optional embodiments, in the display panel provided by the embodiments of the present application, the first light-emitting structure 31 a , the second light-emitting structure 31 b , and the third light-emitting structure 31 c have different luminous colors.

[0208] That is, the first light emitting structure 31 a , the second light emitting structure 31 b and the third light emitting structure 31 c all emit different colors.

[0209] The display panel provided in the embodiment of the present application, through the above-mentioned configuration, can effectively meet the diversified display requirements of the display panel. Furthermore, the above-mentioned configuration facilitates step-by-step molding of the display panel according to color during molding. For example, a light-emitting structure 31 of a corresponding light-emitting color with a thinner thickness can be molded first, followed by a light-emitting structure 31 of a corresponding light-emitting color with a second-thicker thickness, and finally, the light-emitting structure 31 of a corresponding light-emitting color with the thickest thickness. This effectively avoids damage to the encapsulation portion 41 of the light-emitting structure 31 and improves the reliability of the display panel.

[0210] In some optional embodiments, in the display panel provided by the embodiments of the present application, the light emitted by the first light emitting structure 31a includes blue light, the light emitted by the second light emitting structure 31b includes green light, and the light emitted by the third light emitting structure 31c includes red light.

[0211] The display panel provided in the embodiment of the present application, through the above-mentioned arrangement, can effectively meet the display requirements of the display panel. Furthermore, based on the characteristics of the luminescent materials of different luminescent colors and the display panel's requirements for the luminescent brightness of the different color luminescent structures 31, the thickness of the luminescent structure 31 emitting blue light is smaller than that of the luminescent structure 31 emitting green light, which is smaller than that of the luminescent structure 31 emitting red light. Therefore, the above-mentioned arrangement, while meeting the display requirements, also facilitates the formation of the luminescent structures 31 from thin to thick during molding of the display panel, thereby avoiding display failure of the luminescent structure 31 formed earlier during the molding process.

[0212] In some optional embodiments, the display panel also includes a second encapsulation layer 50, which is arranged on the side of the first encapsulation layer 40 facing away from the substrate 10, and the second encapsulation layer 50 covers the multiple encapsulation parts 41. The second encapsulation layer 50 at least partially fills the first gap 91, the second gap 92 and the third gap 93.

[0213] The first encapsulation layer 40 and the second encapsulation layer 50 are used together to achieve the encapsulation effect of the display panel. The second encapsulation layer 50 is located on the side of the first encapsulation layer 40 facing away from the substrate 10. As can be seen from the foregoing, the light-emitting structures 31 of different thicknesses may cause the side of the first encapsulation layer 40 facing away from the substrate 10 to have a non-flat surface, which may easily have an adverse effect on the film layers above.

[0214] In view of this, during the preparation process of the embodiment of the present application, the size and shape of the second encapsulation layer 50 can be controlled so that the second encapsulation layer 50 is a whole-surface structure, and the surface of the second encapsulation layer 50 facing away from the substrate 10 can be parallel or approximately parallel to the plane where the substrate 10 is located, thereby reducing the impact on the subsequent film layer preparation.

[0215] In some optional embodiments, in the display panel provided by the present application, the second encapsulation layer 50 at least partially fills the first gap 91, the second gap 92, and the third gap 93. This ensures the strength and stability of each encapsulation structure while also protecting the light-emitting structure 31.

[0216] As shown in Figures 1 to 7, in some optional embodiments, a display panel provided by an embodiment of the present application includes a substrate 10, an isolation structure 20, a light-emitting functional layer 30, and a first encapsulation layer 40. The isolation structure 20 is arranged on one side of the substrate 10 in its own thickness direction X. The isolation structure 20 encloses a plurality of openings 23, and the plurality of openings 23 include a first opening 23a and a second opening 23b; the light-emitting functional layer 30 is arranged on the substrate 10, and the light-emitting functional layer 30 includes a plurality of light-emitting structures 31, and the plurality of light-emitting structures 31 include a first light-emitting structure 31a arranged in the first opening 23a and a second light-emitting structure 31b arranged in the second opening 23b. Along the thickness direction X, the thickness of the second light-emitting structure 31b is greater than the thickness of the first light-emitting structure 31a; the first encapsulation layer 40 includes a plurality of encapsulation portions 41 arranged corresponding to the light-emitting structures 31, and the encapsulation portion 41 is located on the side of the light-emitting structure 31 facing away from the substrate 10. one side; a plurality of encapsulation portions 41 are spaced apart from each other and include a first encapsulation portion 41a located on the side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation portion 41b located on the side of the second light-emitting structure 31b facing away from the substrate 10; wherein, on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the first light-emitting structure 31a, the distance from the edge of the isolation structure 20 surrounding the first light-emitting structure 31a to the edge of the end portion of the first encapsulation portion 41a parallel to the plane where the substrate 10 is located is M1, and on a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the second light-emitting structure 31b, the distance from the edge of the isolation structure 20 surrounding the second light-emitting structure 31b to the edge of the end portion of the second encapsulation portion 41b parallel to the plane where the substrate 10 is located is M2, and M1<M2.

[0217] The number of openings 23 can be set according to the display requirements of the display panel. The number of first openings 23a and the number of second openings 23b are both multiple. The number of first openings 23a can be equal to the number of second openings 23b. Of course, the number of one of the first openings 23a and the second openings 23b can also be greater than the other.

[0218] The light emitted by the first light emitting structure 31a and the second light emitting structure 31b can be different. For example, the light emitted by the first light emitting structure 31a can include blue light, and the light emitted by the second light emitting structure 31b can include green light. Of course, the light emitted by the first light emitting structure 31a can also include green light, and the light emitted by the second light emitting structure 31b can include red light.

[0219] The plurality of openings 23 enclosed by the isolation structure 20 may correspond to the light emitting structures 31 one to one, with one light emitting structure 31 disposed in one opening 23. Alternatively, multiple light emitting structures 31 may be disposed in one opening 23, for example, multiple light emitting structures 31 of the same color may be disposed in one opening 23.

[0220] The first encapsulation layer 40 can be used to protect the light emitting structure 31 to reduce the probability of water, oxygen, etc. invading the light emitting structure 31 , thereby improving the reliability of the light emitting structure 31 .

[0221] The first encapsulation layer 40 includes multiple encapsulation portions 41, each of which is provided corresponding to each light-emitting structure 31 to achieve encapsulation of the light-emitting structure 31. In some embodiments, multiple light-emitting structures 31 are provided in a one-to-one correspondence with multiple encapsulation portions 41, thereby achieving independent encapsulation of the light-emitting structures 31. Alternatively, one encapsulation portion 41 is provided corresponding to multiple light-emitting structures 31, and multiple light-emitting structures 31 are encapsulated by one encapsulation portion 41. For example, multiple light-emitting structures 31 of the same color are encapsulated by one encapsulation portion 41.

[0222] The centroid can be understood as the geometric center of the orthographic projection of the first light emitting structure 31 a in the thickness direction X.

[0223] In a display panel provided by one embodiment of the present application, in a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially disposed around the first light-emitting structure 31a, the distance from the edge of the isolation structure 20 surrounding the first light-emitting structure 31a to the edge of the end of the first encapsulation portion 41a, parallel to the plane of the substrate 10, is M1. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially disposed around the second light-emitting structure 31b, the distance from the edge of the isolation structure 20 surrounding the second light-emitting structure 31b to the edge of the end of the second encapsulation portion 41b, parallel to the plane of the substrate 10, is M2. M1<M2. This allows the light-emitting structures 31 of the display panel to be formed in order from thin to thick during molding. During this process, light-emitting structures 31 with a later thickness requirement are protected from damage to the encapsulation portion 41 of light-emitting structures 31 with a previously formed thickness requirement during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0224] In some optional embodiments, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 toward the side of the first opening 23a is L1, and the length of the second part 22 protruding from the first part 21 toward the side of the second opening 23b is L2, and L1<L2.

[0225] Optionally, the multiple openings 23 further include a third opening 23c, the multiple light-emitting structures 31 further include a third light-emitting structure 31c arranged in the third opening 23c, and along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b. The multiple encapsulation parts 41 further include a third encapsulation part 41c located on the side of the third light-emitting structure 31c away from the substrate 10. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the third light-emitting structure 31c, the distance from the edge of the isolation structure 20 located around the third light-emitting structure 31c to the edge of the end of the third encapsulation part 41c parallel to the plane where the substrate 10 is located is M3, and M2<M3.

[0226] Through the above arrangement, when the multiple light-emitting structures 31 of the display panel have three or more size specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has been formed during patterning, thereby avoiding the display failure probability of some light-emitting structures 31 and improving the reliability of the display panel.

[0227] Optionally, a plurality of encapsulation parts 41 are arranged at intervals on the orthographic projection of the substrate 10 .

[0228] Optionally, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 on the side toward the second opening 23b is L2, and the length of the second part 22 protruding from the first part 21 on the side toward the third opening 23c is L3, and L2<L3.

[0229] As shown in Figures 1 to 6 and 8, in some optional embodiments, a display panel provided by an embodiment of the present application includes a substrate 10, an isolation structure 20, a light-emitting functional layer 30, and a first encapsulation layer 40. The isolation structure 20 is arranged on one side of the substrate 10 in its own thickness direction X, and the isolation structure 20 encloses a plurality of openings 23, the plurality of openings 23 include a first opening 23a and a second opening 23b. The light-emitting functional layer 30 is arranged on the substrate 10, and the light-emitting functional layer 30 includes a plurality of light-emitting structures 31, the plurality of light-emitting structures 31 include a first light-emitting structure 31a arranged in the first opening 23a and a second light-emitting structure 31b arranged in the second opening 23b. Along the thickness direction X, the thickness of the second light-emitting structure 31b is greater than the thickness of the first light-emitting structure 31a; the first encapsulation layer 40 includes a plurality of encapsulation portions 41 arranged corresponding to the light-emitting structures 31, and the encapsulation portions 41 are arranged corresponding to the light-emitting structures 31. 1 is located on a side of the light-emitting structure 31 facing away from the substrate 10; a plurality of encapsulation portions 41 are spaced apart from each other and include a first encapsulation portion 41a located on a side of the first light-emitting structure 31a facing away from the substrate 10, and a second encapsulation portion 41b located on a side of the second light-emitting structure 31b facing away from the substrate 10; wherein a first surface is provided at an end of the first encapsulation portion 41a, and a second surface is provided at an end of the second encapsulation portion 41b. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the first light-emitting structure 31a, an inclination angle A1 of the first surface relative to the plane of the substrate 10 is obtained. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the second light-emitting structure 31b, an inclination angle A2 of the second surface relative to the plane of the substrate 10 is obtained, and A1<A2.

[0230] Optionally, the isolation structure 20 and the light-emitting functional layer 30 are located on the same side of the substrate 10, and the isolation structure 20 encloses a plurality of openings 23. The embodiment of the present application does not limit the size and shape of the isolation structure 20. Optionally, the orthographic projection of the isolation structure 20 on the substrate 10 can be a mesh structure. Of course, in some embodiments, the orthographic projection of the isolation structure 20 on the substrate 10 can also be a plurality of independent annular structures, and each independently arranged annular structure is correspondingly provided with an opening 23. The above-mentioned isolation structures 20 in various forms can meet the use requirements of the display panel.

[0231] The plurality of openings 23 enclosed by the isolation structure 20 may correspond to the light emitting structures 31 one to one, with one light emitting structure 31 disposed in one opening 23. Alternatively, multiple light emitting structures 31 may be disposed in one opening 23, for example, multiple light emitting structures 31 of the same color may be disposed in one opening 23.

[0232] The first encapsulation layer 40 can be used to protect the light emitting structure 31 to reduce the probability of water, oxygen, etc. invading the light emitting structure 31 , thereby improving the reliability of the light emitting structure 31 .

[0233] The first encapsulation layer 40 includes multiple encapsulation portions 41, each of which is provided corresponding to each light-emitting structure 31 to achieve encapsulation of the light-emitting structure 31. In some embodiments, multiple light-emitting structures 31 are provided in a one-to-one correspondence with multiple encapsulation portions 41, thereby achieving independent encapsulation of the light-emitting structures 31. Alternatively, one encapsulation portion 41 is provided corresponding to multiple light-emitting structures 31, and multiple light-emitting structures 31 are encapsulated by one encapsulation portion 41. For example, multiple light-emitting structures 31 of the same color are encapsulated by one encapsulation portion 41.

[0234] The centroid can be understood as the geometric center of the orthographic projection of the first light emitting structure 31 a in the thickness direction X.

[0235] In a display panel provided by one embodiment of the present application, a first surface is provided at the end of the first encapsulation portion 41a, and a second surface is provided at the end of the second encapsulation portion 41b. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially disposed around the first light-emitting structure 31a, the first surface has an inclination angle A1 relative to the plane of the substrate 10. In a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially disposed around the second light-emitting structure 31b, the second surface has an inclination angle A2 relative to the plane of the substrate 10, with A1 < A2. This allows the light-emitting structures 31 to be formed in order from thin to thick during molding of the display panel. During this process, light-emitting structures 31 with a later thickness requirement are protected from damage to the encapsulation portion 41 of the previously molded light-emitting structure 31 with a later thickness requirement during patterning, thereby reducing the probability of display failure of some light-emitting structures 31 and improving the reliability of the display panel.

[0236] In some optional embodiments, an embodiment of the present application provides a display panel, wherein the plurality of openings 23 further include a third opening 23c, the plurality of light-emitting structures 31 further include a third light-emitting structure 31c arranged at the third opening 23c, and along the thickness direction X, the thickness of the third light-emitting structure 31c is greater than the thickness of the second light-emitting structure 31b, and the plurality of encapsulation parts 41 further include a third encapsulation part 41c located on the side of the third light-emitting structure 31c away from the substrate 10, and a third surface is provided at the end of the third encapsulation part 41c, and in a cross section along the thickness direction X of the substrate 10 and perpendicular to the extension direction of the isolation structure 20 circumferentially arranged around the third light-emitting structure 31c, the inclination angle of the third surface relative to the plane of the substrate 10 is A3, and the inclination angle of the third surface relative to the substrate 10 is A3, A2<A3.

[0237] Through the above arrangement, when the multiple light-emitting structures 31 of the display panel have three or more size specifications, each light-emitting structure 31 can also be formed in order from thin to thick. In this process, the light-emitting structure 31 with the latter thickness requirement will not cause damage to the packaging part 41 of the light-emitting structure 31 with the previous thickness requirement that has been formed during patterning, thereby avoiding the display failure probability of some light-emitting structures 31 and improving the reliability of the display panel.

[0238] Optionally, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 on the side toward the second opening 23b is L2, and the length of the second part 22 protruding from the first part 21 on the side toward the third opening 23c is L3, and L2<L3.

[0239] Optionally, the isolation structure 20 includes a first part 21 and a second part 22 arranged in sequence along a direction away from the substrate 10, the orthographic projection of the first part 21 on the substrate 10 is located within the orthographic projection of the second part 22 on the substrate 10, the length of the second part 22 protruding from the first part 21 on the side toward the first opening 23a is L1, and the length of the second part 22 protruding from the first part 21 on the side toward the second opening 23b is L2, and L1<L2.

[0240] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as no structural conflicts arise. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A display panel, wherein: include: substrate; An isolation structure is disposed on one side of the substrate in its thickness direction, and the isolation structure encloses a plurality of openings, wherein the plurality of openings include a first opening and a second opening; a light-emitting functional layer, disposed on the substrate, the light-emitting functional layer comprising a plurality of light-emitting structures, the plurality of light-emitting structures comprising a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening, and along the thickness direction, the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure; A first encapsulation layer, comprising a plurality of encapsulation parts arranged corresponding to the light emitting structure, wherein the encapsulation parts are located on a side of the light emitting structure away from the substrate; The isolation structure includes a first part and a second part which are arranged in sequence along a direction away from the substrate, the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, the length of the second part protruding from the first part toward the side of the first opening is L1, and the length of the second part protruding from the first part toward the side of the second opening is L2, and L1<L2.

2. The display panel according to claim 1, wherein: The multiple openings also include a third opening, and the multiple light-emitting structures also include a third light-emitting structure arranged in the third opening. Along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure, and the length of the edge of the second part protruding toward the third opening from the first part is L3, and L2<L3.

3. The display panel according to claim 2, wherein: The first light-emitting structure, the second light-emitting structure and the third light-emitting structure have different light-emitting colors; Preferably, the wavelength of the light emitted by the first light emitting structure is smaller than the wavelength of the light emitted by the second light emitting structure; Preferably, the wavelength of the light emitted by the first light emitting structure is smaller than the wavelength of the light emitted by the third light emitting structure; Preferably, the wavelength of the light emitted by the second light emitting structure is smaller than the wavelength of the light emitted by the third light emitting structure; Preferably, the light emitted by the first light emitting structure includes blue light, the light emitted by the second light emitting structure includes green light, and the light emitted by the third light emitting structure includes red light; Preferably, the light emitting area of ​​the first light emitting structure and the light emitting area of ​​the third light emitting structure are respectively larger than the light emitting area of ​​the second light emitting structure, and / or the light emitting area of ​​the third light emitting structure is smaller than the light emitting area of ​​the first light emitting structure.

4. The display panel according to claim 1, wherein: The packaging portion overlaps the side wall of the first portion facing the opening and extends along the side wall to a side of the second portion facing away from the substrate; Preferably, the plurality of encapsulation parts are spaced apart from each other and include a first encapsulation part located on a side of the first light emitting structure away from the substrate, and a second encapsulation part located on a side of the second light emitting structure away from the substrate.

5. The display panel according to claim 4, wherein: Along the thickness direction, at least a portion of the first encapsulation portion is spaced from and arranged opposite to a surface of the second portion facing away from the first portion to form a first gap, and a dimension of the first gap along the thickness direction is smaller than a thickness of the second light emitting structure; Preferably, at least a portion of the second packaging portion is spaced from and arranged opposite to a surface of the second portion facing away from the first portion to form a second gap. Preferably, the dimension of the first gap along the thickness direction is smaller than the dimension of the second gap along the thickness direction; Preferably, a dimension of the first gap along the thickness direction is greater than or equal to a thickness of the first light emitting structure.

6. The display panel according to claim 4, wherein: The orthographic projection of the first encapsulation portion on the substrate is spaced apart from the orthographic projection of the second encapsulation portion on the substrate.

7. The display panel according to claim 5, wherein: The plurality of openings further include a third opening, and the plurality of light-emitting structures further include a third light-emitting structure disposed in the third opening; Preferably, along the thickness direction, the thickness of the third light emitting structure is greater than the thickness of the second light emitting structure, and the length of the edge of the second portion protruding from the first portion toward the third opening is L3, and L2<L3; Preferably, the plurality of encapsulation parts further include a third encapsulation part located on a side of the third light emitting structure away from the substrate, and the third encapsulation part is at least partially spaced from and arranged opposite to a surface of the second part away from the first part to form a third gap; Preferably, the dimension of the second gap along the thickness direction is smaller than the dimension of the third gap along the thickness direction; Preferably, a dimension of the second gap along the thickness direction is smaller than a thickness of the third light emitting structure.

8. The display panel according to claim 7, wherein: A dimension of the second gap along the thickness direction is greater than or equal to a thickness of the second light emitting structure, and / or a dimension of the third gap along the thickness direction is greater than or equal to a thickness of the third light emitting structure.

9. The display panel according to claim 7, wherein: The sum of the size of the first gap along the thickness direction and the thickness of the first encapsulation portion is smaller than the thickness of the second light emitting structure; And / or, a sum of a size of the second gap along the thickness direction and a thickness of the second encapsulation portion is smaller than a thickness of the third light emitting structure.

10. The display panel according to claim 7, wherein: The first encapsulation layer comprises an inorganic material; Preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is arranged on a side of the first encapsulation layer away from the substrate, and the second encapsulation layer covers the plurality of encapsulation parts; Preferably, the second encapsulation layer at least partially fills the first gap, the second gap and the third gap; Preferably, the second encapsulation layer comprises an organic material; Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is arranged on a side of the second encapsulation layer away from the substrate; Preferably, the third encapsulation layer comprises an inorganic material.

11. The display panel according to claim 4, wherein: On a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the first light-emitting structure, a distance from an edge of the isolation structure located in the circumference of the first light-emitting structure to an edge of an end portion of the first packaging portion parallel to a plane where the substrate is located is M1, and on a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the second light-emitting structure, a distance from an edge of the isolation structure located in the circumference of the second light-emitting structure to an edge of an end portion of the second packaging portion parallel to a plane where the substrate is located is M2, M1<M2; Preferably, the plurality of openings further include a third opening, and the plurality of light-emitting structures further include a third light-emitting structure disposed in the third opening, and along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure. Preferably, the plurality of packaging parts also include a third packaging part located on the side of the third light-emitting structure away from the substrate, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the third light-emitting structure, the distance from the edge of the isolation structure circumferentially arranged around the third light-emitting structure to the edge of the end of the third packaging part parallel to the plane where the substrate is located is M3, and M2<M3.

12. The display panel according to claim 4, wherein: The end of the first packaging portion is provided with a first surface, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the first light-emitting structure, the first surface has an inclination angle A1 relative to the plane where the substrate is located; the end of the second packaging portion is provided with a second surface, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the second light-emitting structure, the second surface has an inclination angle A2 relative to the plane where the substrate is located, A1<A2; Preferably, the plurality of openings further include a third opening, and the plurality of light-emitting structures further include a third light-emitting structure disposed in the third opening, and along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure. Preferably, the plurality of packaging parts further include a third packaging part located on the side of the third light-emitting structure away from the substrate, a third surface is provided at the end of the third packaging part, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the third light-emitting structure, an inclination angle of the third surface relative to the plane where the substrate is located is A3, and A2<A3.

13. The display panel according to any one of claims 1 to 12, wherein: The display panel further includes a second electrode, which is disposed on the same side of the substrate as the isolation structure, and the second electrode is at least partially exposed from the isolation opening and is insulated from the isolation structure; The light emitting structure is located on a side of the second electrode away from the substrate. The light emitting structure includes an organic material layer and a first electrode disposed on a side of the organic material layer away from the substrate. The material of the isolation structure includes a metal material. The first electrode is in contact with and connected to the isolation structure.

14. The display panel according to claim 13, wherein: The thickness of the organic material layer of the second light emitting structure is greater than the thickness of the organic material layer of the first light emitting structure; Alternatively, the thickness of the first electrode of the first light emitting structure is less than the thickness of the first electrode of the second light emitting structure; Preferably, the opening further includes a third opening, the light emitting structure further includes a third light emitting structure located at the third opening, and the thickness of the organic material layer of the third light emitting structure is greater than the thickness of the organic material layer of the second light emitting structure. Alternatively, the thickness of the first electrode of the third light emitting structure is greater than the thickness of the first electrode of the second light emitting structure.

15. The display panel according to claim 13, wherein: The first part includes a first sublayer and a second sublayer arranged in sequence in a direction away from the substrate, the first sublayer protrudes from the second sublayer toward one side of the opening, and the first electrode is in contact and connected with at least one of the first sublayer and the second sublayer.

16. A display panel, wherein: include: substrate; An isolation structure is arranged on one side of the substrate in its thickness direction, and the isolation structure encloses a plurality of openings, wherein the plurality of openings include a first opening and a second opening. A light-emitting functional layer is disposed on the substrate, the light-emitting functional layer includes a plurality of light-emitting structures, the plurality of light-emitting structures include a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening, and along the thickness direction, the second light-emitting structure The thickness is greater than the thickness of the first light emitting structure; a first encapsulation layer, comprising a plurality of encapsulation parts arranged corresponding to the light emitting structure, the encapsulation parts being located on a side of the light emitting structure away from the substrate, the encapsulation parts overlapping a side wall of the isolation structure facing the opening and extending along the side wall to a side of the isolation structure away from the substrate, the plurality of encapsulation parts comprising a first encapsulation part located on a side of the first light emitting structure away from the substrate, and a second encapsulation part located on a side of the second light emitting structure away from the substrate; Among them, along the thickness direction, the first packaging part is at least partially spaced from the surface of the isolation structure away from the substrate and is arranged opposite to each other to form a first gap, and the second packaging part is at least partially spaced from the surface of the isolation structure away from the substrate and is arranged opposite to each other to form a second gap, and the size of the first gap along the thickness direction is smaller than the size of the second gap along the thickness direction.

17. The display panel according to claim 16, wherein: Along the thickness direction, the size of the first gap is smaller than the thickness of the second light emitting structure; Preferably, the plurality of packaging parts are arranged at intervals from each other; Preferably, the orthographic projection of the second packaging part on the substrate and the orthographic projection of the first packaging part on the substrate are arranged at an interval.

18. The display panel according to claim 16, wherein: The plurality of openings further include a third opening, and the plurality of light emitting structures further include a third light emitting structure disposed in the third opening, and along the thickness direction, the thickness of the third light emitting structure is greater than the thickness of the second light emitting structure, The plurality of encapsulation parts further include a third encapsulation part located on a side of the third light emitting structure away from the substrate, the third encapsulation part is at least partially spaced from and arranged opposite to a surface of the isolation structure away from the substrate to form a third gap, and a dimension of the second gap along the thickness direction is smaller than a dimension of the third gap along the thickness direction; Preferably, along the thickness direction, a dimension of the second gap along the thickness direction is smaller than a thickness of the third light emitting structure.

19. The display panel according to claim 18, wherein: Along the thickness direction, the size of the first gap is greater than or equal to the thickness of the first light emitting structure; Or / and, along the thickness direction, the size of the second gap is greater than or equal to the thickness of the second light emitting structure; Or / and, along the thickness direction, a size of the third gap is greater than or equal to a thickness of the third light emitting structure.

20. The display panel according to claim 16, wherein: The display panel further includes a second electrode, which is disposed on the same side of the substrate as the isolation structure, and the second electrode is at least partially exposed from the isolation opening and is insulated from the isolation structure; The light emitting structure comprises an organic material layer and a first electrode disposed on a side of the organic material layer away from the substrate, the material of the isolation structure comprises a metal material, and the first electrode is in contact with and connected to the isolation structure; Preferably, the isolation structure comprises a first part and a second part which are sequentially arranged in a direction away from the substrate, and an orthographic projection of the first part on the substrate is located within an orthographic projection of the second part on the substrate.

21. The display panel according to claim 16, wherein: The plurality of light emitting structures include a first light emitting structure, a second light emitting structure and a third light emitting structure, and the thickness of the organic material layer of the second light emitting structure is greater than the thickness of the organic material layer of the first light emitting structure; Alternatively, the thickness of the first electrode of the first light emitting structure is less than the thickness of the first electrode of the second light emitting structure; Preferably, the thickness of the organic material layer of the third light-emitting structure is greater than the thickness of the organic material layer of the second light-emitting structure; Alternatively, the thickness of the first electrode of the third light emitting structure is greater than the thickness of the first electrode of the second light emitting structure.

22. The display panel according to claim 20, wherein: The length of the second portion protruding from the first portion toward the first opening is L1, and the length of the second portion protruding from the first portion toward the second opening is L2, and L1<L2.

23. The display panel according to claim 22, wherein: The multiple openings also include a third opening, and the multiple light-emitting structures also include a third light-emitting structure arranged in the third opening. Along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure, and the length of the edge of the second part protruding toward the third opening from the first part is L3, and L2<L3.

24. A display panel, wherein: include: substrate; An isolation structure is disposed on one side of the substrate in its thickness direction, and the isolation structure encloses a plurality of openings, wherein the plurality of openings include a first opening and a second opening; A light-emitting functional layer is disposed on the substrate, wherein the light-emitting functional layer includes a plurality of light-emitting structures, wherein the plurality of light-emitting structures include a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening; a first encapsulation layer, comprising a plurality of encapsulation parts arranged corresponding to the light emitting structure, the encapsulation parts being located on a side of the light emitting structure away from the substrate, the encapsulation parts overlapping a side wall of the isolation structure facing the opening and extending along the side wall to a side of the isolation structure away from the substrate, the plurality of encapsulation parts comprising a first encapsulation part located on a side of the first light emitting structure away from the substrate, and a second encapsulation part located on a side of the second light emitting structure away from the substrate; Wherein, along the thickness direction, the first encapsulation part is at least partially spaced from and arranged opposite to the surface of the isolation structure away from the substrate to form a first gap, and a dimension of the first gap along the thickness direction is smaller than a thickness of the second light-emitting structure.

25. The display panel according to claim 24, wherein: The second packaging portion is at least partially spaced from and arranged relative to the surface of the isolation structure that is away from the substrate to form a second gap, the multiple openings also include a third opening, the multiple light-emitting structures also include a third light-emitting structure arranged in the third opening, and the size of the second gap along the thickness direction is smaller than the thickness of the third light-emitting structure.

26. A display panel, wherein: include: substrate; An isolation structure is arranged on one side of the substrate in its thickness direction, the isolation structure encloses a plurality of openings, the plurality of openings include a first opening and a second opening, the isolation structure includes a first portion and a second portion sequentially arranged in a direction away from the substrate, and an orthographic projection of the first portion on the substrate is located within an orthographic projection of the second portion on the substrate; The length of the second part protruding from the first part toward the first opening is L1, and the length of the second part protruding from the first part toward the second opening is L2, L1<L2; A light-emitting functional layer is disposed on the substrate, wherein the light-emitting functional layer includes a plurality of light-emitting structures, wherein the plurality of light-emitting structures include a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening; A first encapsulation layer includes a plurality of encapsulation parts arranged corresponding to the light emitting structure, the encapsulation parts are located on a side of the light emitting structure away from the substrate; the encapsulation parts overlap the side wall of the first part facing the opening and extend along the side wall to a side of the second part away from the substrate; the plurality of encapsulation parts include a first encapsulation part located on a side of the first light emitting structure away from the substrate, and a second encapsulation part located on a side of the second light emitting structure away from the substrate; Among them, along the thickness direction, the first packaging part is at least partially spaced from the surface of the second part away from the first part and is arranged opposite to each other to form a first gap, and the second packaging part is at least partially spaced from the surface of the second part away from the first part and is arranged opposite to each other to form a second gap, and the size of the first gap is smaller than the size of the second gap.

27. The display panel according to claim 26, wherein: The orthographic projection of the first encapsulation part on the substrate is arranged at an interval from the orthographic projection of the second encapsulation part on the substrate; Preferably, the dimension of the first gap along the thickness direction is smaller than the thickness of the second light emitting structure; Preferably, the plurality of openings further include a third opening, and the plurality of light-emitting structures further include a third light-emitting structure disposed at the third opening; along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure; the length of the edge of the second portion protruding toward the third opening from the first portion is L3, and L2<L3; The plurality of encapsulation parts further include a third encapsulation part located on a side of the third light emitting structure away from the substrate, the third encapsulation part is at least partially spaced from and arranged opposite to a surface of the second part away from the first part to form a third gap, and the size of the second gap is smaller than the size of the third gap; Preferably, the size of the second gap along the thickness direction is smaller than that of the third light emitting structure. Thickness; Preferably, the thickness of the second light emitting structure is greater than the thickness of the first light emitting structure and / or the thickness of the third light emitting structure is greater than the thickness of the second light emitting structure; Preferably, along the thickness direction, the size of the first gap is greater than or equal to the thickness of the first light emitting structure; and / or a size of the second gap is greater than or equal to a thickness of the second light emitting structure; and / or the size of the third gap is greater than or equal to the thickness of the third light emitting structure; Preferably, the display panel further includes a second encapsulation layer, which is arranged on a side of the first encapsulation layer away from the substrate, covers a plurality of the encapsulation parts, and at least partially fills the first gap, the second gap and the third gap.

28. A display panel, wherein: include: substrate; An isolation structure is disposed on one side of the substrate in its thickness direction, and the isolation structure encloses a plurality of openings, wherein the plurality of openings include a first opening and a second opening; a light-emitting functional layer, disposed on the substrate, the light-emitting functional layer comprising a plurality of light-emitting structures, the plurality of light-emitting structures comprising a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening, and along the thickness direction, the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure; A first encapsulation layer includes a plurality of encapsulation parts arranged corresponding to the light emitting structure, the encapsulation parts are located on a side of the light emitting structure away from the substrate; the plurality of encapsulation parts are arranged at intervals and include a first encapsulation part located on a side of the first light emitting structure away from the substrate, and a second encapsulation part located on a side of the second light emitting structure away from the substrate; Among them, on a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the first light-emitting structure, the distance from the edge of the isolation structure located in the circumference of the first light-emitting structure to the edge of the end of the first packaging part parallel to the plane where the substrate is located is M1, and on a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure arranged circumferentially around the second light-emitting structure, the distance from the edge of the isolation structure located around the second light-emitting structure to the edge of the end of the second packaging part parallel to the plane where the substrate is located is M2, M1<M2.

29. The display panel according to claim 28, wherein: The isolation structure comprises a first part and a second part sequentially arranged in a direction away from the substrate, the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, the second part protrudes from the first part by a length L1 on a side of the first opening, and the second part protrudes from the first part by a length L2 on a side of the second opening, and L1<L2; Preferably, the plurality of openings further include a third opening, the plurality of light-emitting structures further include a third light-emitting structure disposed at the third opening, along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure, the plurality of encapsulation parts further include a third encapsulation part located on a side of the third light-emitting structure away from the substrate, and on a cross section along the thickness direction and perpendicular to an extension direction of an isolation structure circumferentially disposed around the third light-emitting structure, a distance from an edge of the isolation structure located around the third light-emitting structure to an edge of an end of the third encapsulation part parallel to a plane where the substrate is located is M3, and M2<M3; Preferably, a plurality of the encapsulation parts are arranged at intervals on the orthographic projection of the substrate; Preferably, the isolation structure includes a first part and a second part which are arranged in sequence along a direction away from the substrate, the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, the length of the second part protruding from the first part toward the side of the second opening is L2, and the length of the second part protruding from the first part toward the side of the third opening is L3, and L2<L3.

30. A display panel, wherein: include: substrate; An isolation structure is disposed on one side of the substrate in its thickness direction, and the isolation structure encloses a plurality of openings, wherein the plurality of openings include a first opening and a second opening; a light-emitting functional layer, disposed on the substrate, the light-emitting functional layer comprising a plurality of light-emitting structures, the plurality of light-emitting structures comprising a first light-emitting structure disposed in the first opening and a second light-emitting structure disposed in the second opening, and along the thickness direction, the thickness of the second light-emitting structure is greater than the thickness of the first light-emitting structure; The first encapsulation layer includes a plurality of encapsulation parts arranged corresponding to the light emitting structure, wherein the encapsulation parts are located on a side of the light emitting structure away from the substrate; the plurality of encapsulation parts include a a first packaging portion located on a side of a light emitting structure away from the substrate, and a second packaging portion located on a side of the second light emitting structure away from the substrate; In which, in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the first light-emitting structure, a first surface is provided at the end of the first packaging part, and in a cross section along the thickness direction and perpendicular to the extension direction of the isolation structure circumferentially arranged around the second light-emitting structure, a second surface is provided at the end of the second packaging part, an inclination angle of the first surface relative to the plane where the substrate is located is A1, and an inclination angle of the second surface relative to the plane where the substrate is located is A2, and A1<A2.

31. The display panel according to claim 30, wherein: The plurality of openings further include a third opening, the plurality of light-emitting structures further include a third light-emitting structure disposed at the third opening, along the thickness direction, the thickness of the third light-emitting structure is greater than the thickness of the second light-emitting structure, the plurality of encapsulation parts further include a third encapsulation part located on a side of the third light-emitting structure away from the substrate, a third surface is disposed at an end of the third encapsulation part, and in a cross section along the thickness direction and perpendicular to an extension direction of an isolation structure disposed circumferentially around the third light-emitting structure, an inclination angle of the third surface relative to a plane where the substrate is located is A3, and A2<A3; Preferably, the isolation structure includes a first part and a second part which are arranged in sequence along a direction away from the substrate, the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, the length of the second part protruding from the first part toward the side of the second opening is L2, and the length of the second part protruding from the first part toward the side of the third opening is L3, and L2<L3.

32. The display panel according to claim 30, wherein: The isolation structure includes a first part and a second part which are arranged in sequence along a direction away from the substrate, the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, the length of the second part protruding from the first part toward the side of the first opening is L1, and the length of the second part protruding from the first part toward the side of the second opening is L2, and L1<L2.

33. A display device comprising the display panel according to any one of claims 1 to 32.

34. A method for preparing a display panel, wherein: include: An isolation structure is formed on one side of the substrate in the thickness direction, and the isolation structure encloses a plurality of openings. The plurality of openings include a first opening and a second opening; Forming a first light emitting structure layer and a first packaging material layer of a first thickness on the substrate and the isolation structure; Removing the first light emitting structure layer and at least a portion of the first packaging material layer outside the first opening to form a first light emitting structure located in the first opening and a first packaging portion covering the first light emitting structure; Forming a second light emitting structure layer and a second packaging material layer of a second thickness on the substrate and the isolation structure, wherein the second thickness is greater than the first thickness; The second light emitting structure layer and at least a portion of the second packaging material layer outside the second opening are removed to form a second light emitting structure located in the second opening and a second packaging portion covering the second light emitting structure.

35. The method for preparing a display panel according to claim 34, wherein: In the step of forming a second light emitting structure layer and a second packaging material layer of a second thickness on the substrate and the isolation structure, the second light emitting structure layer is continuously disposed at the edge of the first packaging part; Preferably, the second light emitting structure layer includes a second light emitting material layer and a first electrode material layer located on the second light emitting material layer away from the substrate, and the first electrode material layer of the second light emitting structure layer is continuously disposed at an edge of the first packaging portion.

36. The preparation method according to claim 34, wherein In the step of forming an isolation structure on one side of the substrate in the thickness direction, wherein the isolation structure encloses a plurality of openings, the plurality of openings further include a third opening, and the preparation method further includes: Forming a third light emitting structure layer and a third packaging material layer with a third thickness on the substrate and the isolation structure, wherein the third thickness is greater than the second thickness; Removing the third light emitting structure layer and at least a portion of the third packaging material layer outside the third opening to form a third light emitting structure located in the third opening and a third packaging portion covering the third light emitting structure; Preferably, the third light emitting structure layer includes a third light emitting material layer and a first electrode material layer located on the third light emitting material layer away from the substrate, and the first electrode material layer of the third light emitting structure layer is continuously arranged at the edge of the first packaging part and / or the edge of the second packaging part.

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