Display panel, preparation method of display panel and display device

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and a display device.The display panel comprises a substrate, a first insulating layer, a light-emitting functional layer and a second insulating layer, the first insulating layer is arranged on one side of the substrate and comprises at least one supporting part, and the at least one supporting part defines a plurality of first openings; the second insulating layer is arranged on the side, away from the substrate, of the first insulating layer and comprises at least one isolation part, the at least one isolation part forms a plurality of second openings in an enclosing mode, the second openings communicate with the corresponding first openings to form isolation openings, and the orthographic projection of the at least one isolation part on the substrate is larger than the orthographic projection of the isolation part on the substrate. The orthographic projection of the side, close to the at least one isolation part, of the at least one supporting part on the substrate is covered, and the second thickness of the isolation part is smaller than the first thickness of the supporting part; the light-emitting function layer comprises a plurality of light-emitting function structures which are arranged in the isolation openings. In the invention, the supporting part and the isolation part can isolate the preparation material to form the functional layer with the required structure.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel, a method for preparing a display panel, and a display device. Background Art

[0002] Liquid Crystal Display (LCD) panels, Organic Light Emitting Display (OLED) panels, and display panels using Light Emitting Diode (LED) devices are widely used in electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body, and wide application range.

[0003] In the display panel of the related art, it is necessary to separate multiple parts of the functional layer through a mask, a photoresist, etc., resulting in complicated preparation steps for the functional layer of the required structure. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device, which aim to solve the technical problem of complicated preparation steps for multiple parts of a partition functional layer.

[0005] An embodiment of a first aspect of the present application provides a display panel, including:

[0006] According to an implementation of the first aspect of the present application, the display panel further includes:

[0007] substrate;

[0008] A first insulating layer is disposed on one side of the substrate, and includes at least one supporting portion, wherein the at least one supporting portion encloses a plurality of first openings, and the supporting portion has a first thickness in a first direction perpendicular to the substrate;

[0009] A second insulating layer is arranged on a side of the first insulating layer facing away from the substrate, and includes at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the side of the at least one supporting portion close to the at least one isolating portion on the substrate, and the isolating portion has a second thickness in the first direction, and the second thickness is less than the first thickness;

[0010] The light-emitting functional layer includes a plurality of light-emitting functional structures, and the light-emitting functional structures are arranged in the isolation openings.

[0011] According to an implementation of the first aspect of the present application, the first insulating layer further includes:

[0012] A pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to corresponding isolation openings, and at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate;

[0013] The pixel defining portion and the at least one supporting portion are made of the same material.

[0014] According to an implementation of the first aspect of the present application, the pixel defining portion and at least one supporting portion are an integrated structure.

[0015] According to an embodiment of the first aspect of the present application, the display panel further includes a first electrode layer, the first electrode layer includes a plurality of first electrodes, a portion of the first electrode is located between the substrate and the pixel defining portion, and another portion of the first electrode is exposed from the pixel opening;

[0016] According to the implementation of the first aspect of the present application, the light-emitting functional structure and the isolation opening are arranged in a one-to-one correspondence.

[0017] According to an implementation of the first aspect of the present application, the orthographic projection of the support portion on the substrate is located within the orthographic projection of the pixel defining portion on the substrate.

[0018] According to an embodiment of the first aspect of the present application, an orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within an orthographic projection of a surface of the support portion close to the substrate on the substrate.

[0019] According to an implementation of the first aspect of the present application, the orthographic projection of the support portion on the substrate is located within the orthographic projection of the isolation portion on the substrate.

[0020] According to an implementation of the first aspect of the present application, an orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within an orthographic projection of a surface of the isolation portion close to the substrate on the substrate.

[0021] According to an implementation of the first aspect of the present application, the minimum distance from the edge of the isolation portion close to the pixel opening to the surface of the support portion facing away from the substrate is 0.3 μm to 1 μm.

[0022] According to an implementation of the first aspect of the present application, the supporting portion includes a first supporting sub-portion and a second supporting sub-portion, the first supporting sub-portion is located on a side of the second supporting sub-portion facing away from the substrate, and the orthographic projection of the first supporting sub-portion on the substrate is located within the orthographic projection of the second supporting sub-portion on the substrate.

[0023] According to an embodiment of the first aspect of the present application, an orthographic projection of a surface of the first supporting sub-part close to the substrate on the substrate is located within an orthographic projection of a surface of the first supporting sub-part away from the substrate on the substrate.

[0024] According to an implementation of the first aspect of the present application, a cross-sectional area of ​​the first supporting sub-portion gradually increases along a direction from the substrate to the light-emitting functional layer.

[0025] According to an implementation of the first aspect of the present application, a cross-sectional area of ​​the second supporting sub-portion gradually decreases along a direction from the substrate to the light-emitting functional layer.

[0026] According to an embodiment of the first aspect of the present application, the material of at least one supporting part includes an organic material, and the material of at least one isolating part includes an inorganic material.

[0027] According to an embodiment of the first aspect of the present application, the material of the first insulating layer includes an organic material, and the material of the second insulating layer includes an inorganic material.

[0028] According to an embodiment of the first aspect of the present application, the material of the second insulating layer includes a silicon-containing inorganic material.

[0029] According to an implementation of the first aspect of the present application, the material of the second insulating layer includes silicon oxide and / or silicon nitride.

[0030] According to an implementation of the first aspect of the present application, the light-emitting functional structure has a third thickness in the first direction, and the third thickness is less than the first thickness.

[0031] According to an implementation of the first aspect of the present application, the display panel further includes:

[0032] A pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to corresponding isolation openings, at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate, and the pixel defining portion has a fourth thickness in the first direction;

[0033] A first electrode layer, the first electrode layer comprising a plurality of first electrodes, a portion of the first electrode being located between the substrate and the pixel defining portion, and another portion of the first electrode being exposed from the pixel opening, and the first electrode having a fifth thickness in the first direction;

[0034] The sum of the third thickness and the fifth thickness is less than the sum of the first thickness and the fourth thickness.

[0035] According to an implementation of the first aspect of the present application, the display panel further includes:

[0036] The second electrode layer includes a plurality of second electrodes and a plurality of first touch electrodes arranged at intervals from each other, the second electrodes are located on a side of the light-emitting functional structure away from the substrate, and the first touch electrodes are located on a side of at least one isolation portion away from the substrate;

[0037] At least a portion of the orthographic projection of the second electrode on the substrate is located between the orthographic projections of adjacent first touch electrodes on the substrate, and the second electrode and the adjacent first touch electrodes form a touch capacitor.

[0038] According to an implementation of the first aspect of the present application, the second electrode extends from the pixel opening to a surface of the pixel defining portion facing away from the substrate.

[0039] According to an implementation of the first aspect of the present application, the second electrode is spaced apart from the isolation portion.

[0040] According to an implementation of the first aspect of the present application, the second electrode overlaps the isolation portion.

[0041] According to an implementation of the first aspect of the present application, the minimum distance between the surface of the first touch electrode close to the substrate and the surface of the second electrode away from the substrate is 2 μm to 5 μm.

[0042] According to an implementation of the first aspect of the present application, the orthographic projection of the second electrode on the substrate overlaps with the orthographic projections of the multiple light-emitting functional structures on the substrate, and the second electrode is electrically connected to the multiple light-emitting functional structures.

[0043] According to the implementation of the first aspect of the present application, a plurality of light-emitting functional structures are arranged in a light-emitting group at intervals along the second direction, and a plurality of light-emitting groups are arranged at intervals along the third direction; the second electrode extends along the second direction, and a plurality of second electrodes are arranged at intervals along the third direction, and the support portion is disposed between the second electrodes arranged along the third direction, and the first direction, the second direction, and the third direction intersect each other;

[0044] The orthographic projection of the second electrode on the substrate overlaps with the orthographic projection of the light-emitting group on the substrate, and the second electrode is electrically connected to the light-emitting functional structure in the light-emitting group.

[0045] According to an implementation of the first aspect of the present application, the first touch electrode extends along the second direction, a plurality of first touch electrodes are arranged at intervals along the third direction, and the support portion is disposed between the second electrode and the first touch electrode adjacent to each other along the third direction.

[0046] According to an implementation of the first aspect of the present application, the orthographic projection of the first touch electrode on the substrate is located between the orthographic projections of adjacent light-emitting groups on the substrate.

[0047] According to an implementation of the first aspect of the present application, orthographic projections of the plurality of first touch electrodes on the substrate are located between orthographic projections of adjacent second electrodes on the substrate.

[0048] According to an implementation of the first aspect of the present application, the second electrode layer further includes a plurality of spaced second touch electrodes, and the second touch electrodes are arranged between adjacent support portions;

[0049] The orthographic projection of the second touch electrode on the substrate is at least partially located between the orthographic projections of adjacent first touch electrodes on the substrate, and the second touch electrode and the adjacent first touch electrodes form a touch capacitor.

[0050] According to an implementation of the first aspect of the present application, the display panel also includes a pixel defining portion, which encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, at least one supporting portion is arranged on a side of the pixel defining portion facing away from the substrate, and the second touch electrode is located on a side of the pixel defining portion facing away from the substrate.

[0051] According to an implementation of the first aspect of the present application, an orthographic projection of the second touch electrode on the substrate partially overlaps with an orthographic projection of the first touch electrode on the substrate.

[0052] According to the implementation of the first aspect of the present application, a plurality of light-emitting functional structures are arranged in a light-emitting group at intervals along the second direction, and a plurality of light-emitting groups are arranged at intervals along the third direction; the second electrode extends along the second direction, and a plurality of second electrodes are arranged at intervals along the third direction, and the support portion is disposed between the second electrodes arranged along the third direction, and the first direction, the second direction, and the third direction intersect each other;

[0053] The second electrode is electrically connected to the light-emitting functional structure in the light-emitting group, the first touch electrode and the second touch electrode extend along the second direction, the multiple second touch electrodes and the multiple first touch electrodes are arranged in a staggered manner along the third direction, and the support portion is arranged between the first touch electrode and the second touch electrode arranged along the third direction.

[0054] According to an implementation of the first aspect of the present application, the orthographic projection of the second touch electrode on the substrate is located between the orthographic projections of adjacent light-emitting groups on the substrate.

[0055] According to an implementation of the first aspect of the present application, the display panel further includes:

[0056] The second electrode layer includes a plurality of second electrodes and a plurality of auxiliary electrodes spaced apart from each other. The second electrodes are located on the side of the light-emitting functional structure away from the substrate. The auxiliary electrodes are located on the side of at least one isolation portion away from the substrate. The auxiliary electrodes connect at least two second electrodes.

[0057] The embodiment of the second aspect of the present application further provides a method for preparing a display panel, including:

[0058] providing a substrate;

[0059] A first insulating material layer and a second insulating material layer are sequentially provided on one side of the substrate;

[0060] The second insulating material layer and the first insulating material layer are patterned in sequence, the first insulating material layer forms a first insulating layer, the first insulating layer includes at least one supporting portion, the at least one supporting portion encloses a plurality of first openings, in a first direction perpendicular to the substrate, the supporting portion has a first thickness, the second insulating material layer forms a second insulating layer, the second insulating layer includes at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the at least one supporting portion on one side close to the at least one isolating portion on the substrate, the isolating portion has a second thickness in the first direction, and the second thickness is less than the first thickness;

[0061] A light-emitting functional layer is formed on one side of the substrate. The light-emitting functional layer includes a plurality of light-emitting functional structures. The light-emitting functional structures are arranged in the isolation openings.

[0062] According to an implementation of the second aspect of the present application, after the light-emitting functional layer is formed on one side of the substrate, the method further includes:

[0063] Electrode material is laid on one side of the substrate, part of the electrode material is located on the side of the light-emitting functional structure away from the substrate, forming a plurality of spaced second electrodes, the second electrodes are electrically connected to the light-emitting functional structure, and the support portion is arranged between adjacent second electrodes; part of the electrode material falls on the side of the support portion away from the substrate, forming a plurality of spaced first touch electrodes, the orthographic projection of the first touch electrode on the substrate is at least partially located between the orthographic projections of adjacent second electrodes on the substrate, and the second electrode cooperates with the adjacent first touch electrodes to form a touch capacitor.

[0064] According to an implementation of the second aspect of the present application, patterning the first insulating material layer and the second insulating material layer is performed in sequence, including:

[0065] Etching the second insulating material layer to form a second insulating layer, wherein the second insulating layer includes a plurality of isolation portions, and second openings are formed between adjacent isolation portions;

[0066] The first insulating material layer exposed from the second opening is etched to form a plurality of support portions.

[0067] According to an implementation of the second aspect of the present application, in the step of sequentially patterning the first insulating material layer and the second insulating material layer, the etching rate of the first insulating material layer is greater than the etching rate of the insulating material layer.

[0068] According to an implementation of the second aspect of the present application, etching the first insulating material layer exposed from the first opening includes:

[0069] The first insulating material layer exposed from the first opening is etched until the second electrode is exposed from the pixel opening formed by etching, thereby obtaining a pixel defining portion enclosing a plurality of pixel openings, wherein the pixel openings are connected to corresponding isolation openings, and at least one supporting portion is arranged on a side of the pixel defining portion away from the substrate.

[0070] According to an implementation of the second aspect of the present application, a thickness of the first insulating material layer in the first direction is 3 μm to 4 μm.

[0071] According to an implementation of the second aspect of the present application, the thickness of the second insulating material layer in the first direction is 3000A to 6000A.

[0072] The third aspect of the present application further provides a display panel, including:

[0073] substrate;

[0074] A first insulating layer, disposed on one side of the substrate, comprises at least one supporting portion, wherein the at least one supporting portion encloses a plurality of first openings, and a material of the at least one supporting portion comprises an organic material;

[0075] A second insulating layer is provided on a side of the first insulating layer facing away from the substrate, comprising at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the at least one supporting portion on a side close to the at least one isolating portion on the substrate, and the material of the at least one isolating portion comprises an inorganic material;

[0076] The light-emitting functional layer includes a plurality of light-emitting functional structures, and the light-emitting functional structures are arranged in the isolation openings.

[0077] The fourth aspect of the present application further provides a display device, including:

[0078] A display panel as provided in the first aspect or the third aspect, or a display panel prepared by the method for preparing a display panel as provided in the second aspect.

[0079] In the display panel, the method for preparing the display panel and the display device provided in the embodiments of the present application, the first insulating layer is provided to include a supporting portion, so that the first insulating layer has the function of isolating adjacent light-emitting functional structures; by providing an orthographic projection of at least one isolating portion on the substrate to cover the orthographic projection of at least one supporting portion on one side close to at least one isolating portion on the substrate, the preparation material arranged on the entire surface can be isolated by the supporting portion and the isolating portion to form a functional layer of the desired structure, thereby simplifying the preparation steps; by providing the second thickness of the isolating portion to be smaller than the first thickness of the supporting portion, it is beneficial to increase the spacing distance along the first direction between the two mutually isolated material portions by increasing the first thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0081] Figure 1 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0082] Figure 2 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0083] Figure 3 is a partial planar structural schematic diagram of a display panel provided in some embodiments of the present application;

[0084] Figure 4 is a partial planar structural schematic diagram of a display panel provided in some embodiments of the present application;

[0085] Figure 5 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0086] Figure 6 is a partial planar structural schematic diagram of a display panel provided in some embodiments of the present application;

[0087] Figure 7 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0088] Figure 8 is a schematic diagram of a preparation process of a method for preparing a display panel provided in some embodiments of the present application;

[0089] Fig. 9 It is a schematic diagram of the preparation process of the display panel preparation method provided in some embodiments of the present application.

[0090] Description of reference numerals:

[0091] 1. substrate; 11. underlay; 12. driving circuit layer;

[0092] 2. first insulating layer; 21. pixel defining portion; 22. supporting portion; 221. first supporting sub-portion; 222. second supporting sub-portion; 23. pixel opening; 24. first opening; 25. isolation opening;

[0093] 3. Light-emitting functional layer; 31. Light-emitting functional structure; 32. Light-emitting group;

[0094] 4. second electrode layer; 41. second electrode; 42. first touch electrode; 43. second touch electrode; 44. auxiliary electrode;

[0095] 5. second insulating layer; 51. isolation portion; 52. second opening;

[0096] 6. Encapsulation layer; 61. First encapsulation layer; 62. Second encapsulation layer; 63. Third encapsulation layer;

[0097] 7. first electrode layer; 71. first electrode;

[0098] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0099] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0100] 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 "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0101] 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 another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0102] In the display panel of the related art, an encapsulation layer is arranged on the light-emitting functional layer, and a touch layer is arranged on the side of the encapsulation layer away from the substrate. The independently arranged touch layer increases the thickness of the display panel, which is not conducive to thinning the display panel.

[0103] In the display panel of the related art, a support portion may be provided between adjacent light-emitting functional structures to isolate part of the functional layer through the support portion, for example: insulation between adjacent electrodes is achieved through the support portion; encapsulation of the hole area is achieved through the support portion, etc.

[0104] The supporting part in the related art needs to be prepared by a mask, photoresist, etc. to isolate multiple parts of the functional layer, and the steps for preparing the supporting part are cumbersome. The supporting part in the related art can be a metal supporting part or a negative photoresist supporting part. The metal supporting part includes a plurality of stacked metal layers, and the physical and chemical properties of the metal material itself limit the maximum height that the metal supporting part can be prepared. The preparation cost of the negative photoresist supporting part is high and the isolation effect on the functional layer is poor.

[0105] To solve the above problems, embodiments of the present application provide a display panel, a method for manufacturing a display panel, and a display device. Embodiments of the display panel, a method for manufacturing a display panel, and a display device will be described below in conjunction with the accompanying drawings.

[0106] In a first aspect, the present application provides a display panel, such as Figure 1 and Figure 2As shown, a display panel includes a substrate 1, a first insulating layer 2, a light-emitting functional layer 3 and a second insulating layer 5, wherein the first insulating layer 2 is arranged on one side of the substrate 1, the first insulating layer 2 includes at least one supporting portion 22, at least one supporting portion 22 encloses a plurality of first openings 24, and in a first direction X perpendicular to the substrate 1, the supporting portion 22 has a first thickness H1; the second insulating layer 5 is arranged on a side of the first insulating layer 2 away from the substrate 1, the second insulating layer 5 includes at least one isolating portion 51, at least one isolating portion 51 encloses a plurality of second openings 52, the second openings 52 are connected to the corresponding first openings 24 to form isolating openings 25, the orthographic projection of at least one isolating portion 51 on the substrate 1 covers the orthographic projection of at least one supporting portion 22 on one side close to at least one isolating portion 51 on the substrate 1, the isolating portion 51 has a second thickness H2 in the first direction X, and the second thickness H2 is less than the first thickness H1; the light-emitting functional layer 3 includes a plurality of light-emitting functional structures 31, and the light-emitting functional structures 31 are arranged in the isolating openings 25.

[0107] In the display panel provided in the embodiment of the present application, the substrate 1 can not only provide support for the first insulating layer 2, but also provide electrical signals for the light-emitting functional layer 3. There are many ways to set the substrate 1. In some embodiments, the substrate 1 may include a substrate 11 and a driving circuit layer 12 arranged on the substrate 11, and the driving circuit layer 12 may include a pixel driving circuit, a plurality of conductive connection structures stacked and arranged, and the like. Exemplarily, the pixel driving circuit arranged in the driving circuit layer 12 includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a drain and a source. The storage capacitor includes a first plate and a second plate.

[0108] The plurality of light-emitting functional structures 31 may be light-emitting functional structures capable of emitting light of different colors. For example, there may be a red light-emitting functional structure capable of emitting red light, a green light-emitting functional structure capable of emitting green light, and a blue light-emitting functional structure capable of emitting blue light. The plurality of red light-emitting functional structures, the plurality of green light-emitting functional structures, and the plurality of blue light-emitting functional structures are arranged according to a preset rule to have different display effects.

[0109] In the present application, the orthographic projection on the substrate 1 may be a projection on the substrate 1 along a first direction X, where the first direction X may be a thickness direction of the display panel, a direction from the substrate 1 to the light-emitting functional layer 3, or a direction perpendicular to the plane where the substrate 1 is located.

[0110] The first insulating layer 2 has at least one supporting portion 22 , that is, it may include one supporting portion 22 or multiple supporting portions 22 . The supporting portion 22 may separate adjacent light-emitting functional structures 31 to avoid crosstalk between adjacent light-emitting functional structures 31 .

[0111] The second insulating layer 5 includes at least one isolating portion 51, that is, it may include one isolating portion 51 or multiple isolating portions 51. The isolating portions 51 and the supporting portions 22 may be arranged in a one-to-one correspondence. The second insulating layer 5 may be made of a material different from that of the first insulating layer 2, and the isolating portion 51 is arranged on the side of the supporting portion 22 away from the substrate 1, so that the isolating portion 51 may be spaced between the supporting portion 22 and the functional layer located on the side of the isolating portion 51 away from the substrate 1, so as to avoid interference between the functional layer and the functional layer connected to the supporting portion 22.

[0112] The orthographic projection of at least one isolation portion 51 on the substrate 1 covers the orthographic projection of at least one support portion 22 on one side close to at least one isolation portion 51 on the substrate 1, so that the isolation portion 51 completely covers the side of the support portion 22 close to the isolation portion 51, and at this time the support portion 22 is recessed relative to the isolation portion 51 in the direction away from the isolation opening 25. When the whole layer is prepared for other functional layers, the fallen material produces a large drop at the edge of the isolation portion 51. Due to the concave setting of the support portion 22, it is difficult to connect the prepared material outside the isolation portion 51, so that a break is found, forming two mutually isolated material portions. The first thickness H1 and the second thickness H2 can be adjusted as needed to adjust the spacing distance between the two mutually isolated material portions along the first direction X. The second thickness H2 of the isolation portion 51 is less than the first thickness H1 of the support portion 22, and the spacing distance between the two mutually isolated material portions along the first direction X can be increased by increasing the first thickness H1.

[0113] The display panel provided in the present application may further include an encapsulation layer, a cover plate covering the side of the encapsulation layer facing away from the substrate 1, an optical adhesive layer between the encapsulation layer and the cover plate, etc. The encapsulation layer is used to encapsulate and protect the light-emitting functional layer 3 and the second electrode layer 4 to reduce the entry of external water and oxygen into the display panel. The cover plate can reduce the damage to the light-emitting functional layer 3 by external forces. The optical adhesive layer bonds the cover plate and the encapsulation layer.

[0114] In the embodiment provided in the present application, the first insulating layer 2 is provided to include a supporting portion 22, so that the first insulating layer 2 has the function of isolating adjacent light-emitting functional structures 31; by providing at least one isolating portion 51 so that its orthographic projection on the substrate 1 covers the orthographic projection of at least one supporting portion 22 on one side close to at least one isolating portion 51 on the substrate 1, the support portion 22 and the isolating portion 51 can be used to isolate the entire surface of the prepared material to form a functional layer of the desired structure, and by providing the second thickness H2 of the isolating portion 51 to be smaller than the first thickness H1 of the supporting portion 22, the first thickness H1 can be increased to increase the spacing distance between the two mutually isolated material portions along the first direction X.

[0115] In some embodiments, the first insulating layer 2 also includes a pixel defining portion 21, which encloses a plurality of pixel openings 23, the pixel openings 23 are connected to the corresponding isolation openings 25, and at least one supporting portion 22 is arranged on the side of the pixel defining portion 21 away from the substrate 1; the pixel defining portion 21 and at least one supporting portion 22 are made of the same material.

[0116] The pixel defining portion 21 and the supporting portion 22 may be made of the same material and based on the same process, thereby simplifying the manufacturing steps.

[0117] In some embodiments, the pixel defining portion 21 and at least one supporting portion 22 are an integrated structure. The supporting portion 22 can be understood as a structure extending from the pixel defining portion 21 in a direction away from the substrate 1. For example, a first insulating material layer is provided, and the first insulating material layer is patterned to obtain the supporting portion 22. The first insulating material layer is further patterned based on the gaps between adjacent supporting portions 22 to obtain the pixel defining portion 21 having the pixel opening 23.

[0118] The pixel defining portion 21 surrounds a plurality of pixel openings 23, and the light-emitting functional structure 31 may be partially disposed in the pixel opening 23. The pixel defining portion 21 defines the setting range of the light-emitting functional structure 31, and the pixel defining portion 21 is spaced between adjacent light-emitting functional structures 31. The number of pixel openings 23 may be the same as the number of light-emitting functional structures 31, and the pixel openings 23 are disposed in a one-to-one correspondence with the light-emitting functional structures 31. Optionally, the light-emitting functional structure 31 and the isolation opening 25 are disposed in a one-to-one correspondence, that is, the pixel opening 23 is disposed in a one-to-one correspondence with the light-emitting functional structure 31, and the pixel opening 23 is disposed in a one-to-one correspondence with the isolation opening 25.

[0119] In some embodiments, the display panel further includes a first electrode layer 7 including a plurality of first electrodes 71 , a portion of the first electrode 71 is located between the substrate 1 and the pixel defining portion 21 , and another portion of the first electrode 71 is exposed from the pixel opening 23 .

[0120] The side of the first electrode 71 facing away from the substrate 1 is in contact with the light-emitting functional structure 31, so as to realize the electrical connection between the first electrode 71 and the light-emitting functional structure 31. A second electrode 41 may also be provided on the side of the light-emitting functional structure 31 facing away from the substrate 1, and the second electrode 41, the light-emitting functional structure 31 and the first electrode 71 are stacked in sequence. One of the second electrode 41 and the first electrode 71 may be a cathode, and the other may be an anode. The second electrode 41 and the first electrode 71 are respectively connected to the light-emitting functional structure 31 and are used to drive the light-emitting functional structure 31 to emit light. The pixel defining portion 21 is provided between adjacent first electrodes 71, so that the pixel defining portion 21 can insulate the adjacent first electrodes 71.

[0121] In some embodiments, the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1 .

[0122] The orthographic projection of the supporting portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1, that is, the area of ​​the orthographic projection of the supporting portion 22 on the substrate 1 is smaller than the area of ​​the orthographic projection of the pixel defining portion 21 on the substrate 1, which is beneficial for the pixel defining portion 21 to support the supporting portion 22, and to a certain extent avoids or reduces the support portion 22 from blocking the light emitted by the light-emitting functional structure 31 arranged in the pixel opening 23.

[0123] The functional layer prepared on the side of the second insulating layer 5 away from the substrate is the second electrode layer 4 as an example for explanation. The electrode material used to prepare the second electrode layer 4 can be arranged corresponding to the entire surface of the display panel. Since the support portion 22 is arranged on the side of the pixel defining portion 21 away from the substrate 1, and the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1, part of the electrode material falls into the adjacent support portion 22 and accumulates on the side of the light-emitting functional structure 31 away from the substrate 1 to form the second electrode 41, and part of the electrode material falls on the side of the support portion 22 away from the substrate 1 to form the first touch electrode 42. Since the electrode material has a large drop at the edge of the support portion 22, the second electrode 41 and the first touch electrode 42 are spaced and not in contact, and the second electrode 41 and the first touch electrode 42 are prepared in the same step.

[0124] In some embodiments, the orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the support portion 22 close to the substrate 1 on the substrate 1 .

[0125] The orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the support portion 22 close to the substrate 1 on the substrate 1, that is, the end of the support portion 22 facing away from the substrate 1 is small, and the end close to the substrate 1 is large, which is conducive to stable support of the support portion 22 on the pixel defining portion 21.

[0126] In some embodiments, the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the isolation portion 51 on the substrate 1 .

[0127] The isolation portion 51 extends outward a predetermined distance relative to the support portion 22, which is conducive to the electrode material being disconnected at the edge of the isolation portion 51, forming a state in which part of the preparation material is located on the isolation portion 51 and part of the electrode material is located at the pixel opening 23, so as to facilitate defining the pattern of the second electrode 41 and the first touch electrode 42 through the support portion 22.

[0128] In some embodiments, the orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the isolation portion 51 close to the substrate 1 on the substrate 1 .

[0129] The isolation portion 51 is completely covered with the support portion 22, and the support portion 22 is recessed relative to the isolation portion 51 in a direction away from the pixel opening 23. When preparing the second electrode 41 and the first touch electrode 42, the electrode material has a large drop at the edge of the isolation portion 51, and the support portion 22 is recessed, so that the electrode material is difficult to connect outside the isolation portion 51, and thus a break is found, forming the second electrode 41 and the first touch electrode 42 isolated from each other.

[0130] Optionally, the support portion 22 is concave relative to the isolation portion 51 in a direction away from the central axis of the pixel opening 23, so that the electrode material is disconnected at the isolation portion 51, and the etching waste generated by etching the support portion 22 falls on the support portion 22, which is easy to clean.

[0131] In some embodiments, the minimum distance H3 from the edge of the isolation portion 51 close to the pixel opening 23 to the surface of the support portion 22 facing away from the substrate 1 is 0.3 μm to 1 μm.

[0132] If H3 is too small, the electrode material cannot be effectively isolated. If H3 is too large, the support part 22 will not be stable enough to support the isolation part 51. H3 is set to 0.3 μm to 1 μm to balance the isolation between the second electrode 41 and the first touch electrode 42 and the stability of the support part 22 supporting the isolation part 51.

[0133] In some embodiments, the support portion 22 includes a first support sub-portion 221 and a second support sub-portion 222 , wherein the first support sub-portion 221 is located on a side of the second support sub-portion 222 facing away from the substrate 1 , and the orthographic projection of the first support sub-portion 221 on the substrate 1 is located within the orthographic projection of the second support sub-portion 222 on the substrate 1 .

[0134] Before preparing the patterned support portion 22, a patterned second insulating layer 5 may be prepared first, and the first insulating material layer between the exposed adjacent isolation portions 51 may be dry-etched to prepare the spaced support portions 22. Since the second insulating layer 5 shields part of the first insulating material layer, the orthographic projection of the first support sub-portion 221 formed by etching on the substrate 1 is located within the orthographic projection of the second support sub-portion 222 on the substrate 1, that is, the support portion 22 is larger at one end close to the substrate 1 and smaller at the end away from the substrate 1.

[0135] In some embodiments, an orthographic projection of a surface of the first supporting sub-portion 221 close to the substrate 1 on the substrate 1 is located within an orthographic projection of a surface of the first supporting sub-portion 221 facing away from the substrate 1 on the substrate 1 .

[0136] During the dry etching process of the first insulating material layer, the etching rate of the insulating material layer used to form the second insulating material layer 5 is lower than that of the first insulating material layer, and the second insulating layer 5 partially blocks the first insulating material layer, so that the orthographic projection of the surface of the formed first supporting sub-portion 221 close to the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the first supporting sub-portion 221 facing away from the substrate 1 on the substrate 1.

[0137] In some embodiments, the cross-sectional area of ​​the first supporting sub-portion 221 gradually increases from the substrate 1 to the light-emitting functional layer 3 , and the cross-sectional area of ​​the first supporting sub-portion 221 away from the substrate 1 may be an inverted trapezoid.

[0138] In some embodiments, the cross-sectional area of ​​the second supporting sub-portion 222 gradually decreases along the direction from the substrate 1 to the light-emitting functional layer 3, and the cross-sectional area of ​​the first supporting sub-portion 221 along the direction away from the substrate 1 may be an upright trapezoid. The first supporting sub-portion 221 and the second supporting sub-portion 222 are prepared by the same dry etching step, so that the junction of the first supporting sub-portion 221 and the second supporting sub-portion 222 is a smooth surface.

[0139] In some embodiments, the material of at least one supporting portion 22 includes an organic material, and the material of at least one isolating portion 51 includes an inorganic material.

[0140] The support part 22 is made of an organic material, so as to facilitate the preparation of the support part 22 having a required first thickness. The isolation part 51 is made of an inorganic material, so as to improve the insulation performance of the isolation part 51.

[0141] The material of the first insulating layer 2 includes an organic material, and the material of the second insulating layer 5 includes an inorganic material, so as to facilitate the preparation of the organic support portion 22 and the inorganic isolation portion 51 .

[0142] In some embodiments, the material of the second insulating layer 5 includes a silicon-containing inorganic material.

[0143] The second insulating layer 5 includes a silicon-containing inorganic material such as silicon nitride, silicon oxide or silicon oxynitride. The silicon-containing inorganic material layer can be formed between the insulating first touch electrode 42 and the support portion 22. The silicon-containing inorganic material layer has stable chemical properties, and the process of preparing the first insulating layer 2 has little or no damage to the silicon-containing inorganic material layer.

[0144] In some embodiments, the second insulating layer 5 is a silicon oxide layer and / or a silicon nitride layer. Optionally, the second insulating layer 5 is a silicon oxide layer.

[0145] In some embodiments, the light-emitting functional structure 31 has a third thickness H4 in the first direction X, and the third thickness H4 is less than the first thickness H1.

[0146] The third thickness H4 is smaller than the first thickness H1 to prevent the light-emitting functional structure 31 from protruding in a direction away from the substrate 1 relative to the support portion 22 .

[0147] In some embodiments, the display panel further includes a pixel defining portion 21 and a first electrode layer 7, the pixel defining portion 21 encloses a plurality of pixel openings 23, the pixel openings 23 are connected to corresponding isolation openings 25, at least one support portion 22 is disposed on a side of the pixel defining portion 21 away from the substrate 1, and the pixel defining portion 21 has a fourth thickness H5 in the first direction X; the first electrode layer 7 includes a plurality of first electrodes 71, a portion of the first electrode 71 is located between the substrate 1 and the pixel defining portion 21, and another portion is exposed from the pixel opening 23, and the first electrode 71 has a fifth thickness H6 in the first direction X;

[0148] The sum of the third thickness H4 and the fifth thickness H6 is smaller than the sum of the first thickness H1 and the fourth thickness H5.

[0149] The sum of the third thickness H4 and the fifth thickness H6 is the total thickness of the stacked arrangement of the first electrode 71 and the light-emitting functional structure 31. The sum of the first thickness H1 and the fourth thickness H5 is the total thickness of the pixel defining portion 21 and the supporting portion 22. (H4+H6) is set to be smaller than (H1+H5) to prevent the light-emitting functional structure 31 from protruding in a direction away from the substrate 1 relative to the supporting portion 22, which is conducive to forming a partition functional layer on the side of the light-emitting functional structure 31 away from the substrate 1.

[0150] In some embodiments, (H1+H5) is 3 μm to 4 μm, and H2 is 3000A to 6000A.

[0151] The distance between the mutually isolated parts along the first direction is controlled by adjusting the thickness of the first insulating layer 2 and the second insulating layer 5. Optionally, (H1+H5) is 3μm, 3.5μm, 4μm, and H2 is 3000A, 4000A, 5000A, 5500A, 6000A.

[0152] In some embodiments, the second electrode layer 4 includes a plurality of second electrodes 41 and a plurality of first touch electrodes 42 spaced apart from each other, the second electrodes 41 are located on the side of the light-emitting functional structure 31 facing away from the substrate 1, the first touch electrodes 42 are located on the side of at least one supporting portion 22 facing away from the substrate 1, at least a portion of the orthographic projection of the second electrode 41 on the substrate 1 is located between the orthographic projections of adjacent first touch electrodes 42 on the substrate 1, and the second electrode 41 and the adjacent first touch electrodes 42 form a touch capacitor.

[0153] The second electrode 41 is in contact with the light-emitting functional structure 31 on one side close to the substrate 1 to achieve electrical connection between the second electrode 41 and the light-emitting functional structure 31. The support portion 22 is disposed between adjacent second electrodes 41, so that the support portion 22 can insulate adjacent second electrodes 41 and reduce crosstalk between adjacent second electrodes 41.

[0154] The first touch electrode 42 is located on the side of the support portion 22 away from the substrate 1, the second electrode 41 is located between adjacent support portions 22, and the orthographic projection of the first touch electrode 42 on the substrate 1 is at least partially located between the orthographic projections of adjacent second electrodes 41 on the substrate 1, which can not only reduce the light emitted by the light-emitting functional structure 31 blocked by the first touch electrode 42, but also enable multiple first touch electrodes 42 and multiple second electrodes 41 to be arranged alternately, and touch capacitors can be formed between adjacent first touch electrodes 42 and second electrodes 41. When a user's finger touches the display panel, the electrical signal of the touch capacitor will change, and the user's touch position on the display panel can be determined by analyzing the electrical signal of the touch capacitor change.

[0155] The second electrode layer 4 is arranged on the side of the light-emitting functional layer 3 away from the substrate 1. In order to prevent the second electrode layer from affecting the display of the light-emitting functional layer 3, the second electrode layer 4 can be made of a light-transmitting material. By arranging that the orthographic projection of the first touch electrode 42 on the substrate 1 is at least partially located between the orthographic projections of the adjacent second electrodes 41 on the substrate 1, the influence of the first touch electrode 42 on the light emission of the light-emitting functional structure 31 is reduced.

[0156] By arranging the first touch electrode 42 on the side of the support portion 22 facing away from the substrate 1, the capacitance value of the touch capacitor formed by the second electrode 41 and the first touch electrode 42 can be adjusted by controlling the distance between the second electrode 41 and the first touch electrode 42. By arranging the second electrode 41 and the adjacent first touch electrode 42 to form a touch capacitor, the second electrode 41 can not only be used as an output end or an input end to provide an electrical signal to the light-emitting functional structure 31, but also can be used as a plate to form a touch capacitor with the first touch electrode 42 to realize the touch function. By reusing the second electrode 41, it is possible to save the need to set up some touch electrodes with a single function while maintaining the same touch resolution, thereby reducing the thickness of the display panel.

[0157] In some embodiments, the second electrode 41 extends from the pixel opening 23 to a surface of the pixel defining portion facing away from the substrate 1 .

[0158] The electrode material portion falling between adjacent support portions 22 may be gradually accumulated in the pixel opening 23 , and the portion may fall on the pixel defining portion 21 , forming a structure in which the second electrode 41 extends from the pixel opening 23 to the surface of the pixel defining portion away from the substrate 1 .

[0159] In some embodiments, the second electrode 41 is spaced apart from the support portion 22 .

[0160] By controlling the length of the isolation portion 51 extending relative to the support portion 22, the coverage area of ​​the electrode material falling on the pixel defining portion 21 and the isolation portion 51 can be controlled, so that the second electrode 41 and the support portion 22 are spaced apart, which is conducive to avoiding current crosstalk between adjacent second electrodes 41. The functional layer located on one side of the second electrode 41 can fill the gap between the second electrode 41 and the support portion 22. The functional layer located on one side of the second electrode 41 can be an encapsulation layer 6.

[0161] In some other embodiments, the second electrode 41 overlaps the support portion 22 .

[0162] When the support portion 22 has good insulation capability, the second electrode 41 overlaps with the support portion 22 , and the support portion 22 can effectively insulate the adjacent second electrode 41 .

[0163] In some embodiments, the orthographic projection of the first touch electrode 42 on the substrate 1 partially overlaps with the orthographic projection of the second electrode 41 on the substrate 1 .

[0164] When the second electrode 41 and the first touch electrode 42 are prepared by using the isolation part 51 to separate the electrode material in the same step, the second electrode 41 and the first touch electrode 42 formed by the electrode material separated by the isolation part 51 overlap in the orthographic projection part of the substrate 1. The size of the touch capacitor is related to the relative area between the electrodes. The second electrode 41 and the first touch electrode 42 overlap in the orthographic projection part of the substrate 1, which is conducive to forming a touch capacitor and improving the capacitance value of the touch capacitor.

[0165] In some embodiments, the minimum distance H7 between the surface of the first touch electrode 42 close to the substrate 1 and the surface of the second electrode 41 away from the substrate 1 is 2 μm-5 μm.

[0166] By controlling the height of the support portion 22 and the isolation portion 51 in the direction away from the substrate 1, the distance between the first touch electrode 42 and the second electrode 41 can be controlled. The size of the touch capacitor is related to the spacing between the electrodes. By controlling the distance between the first touch electrode 42 and the second electrode 41, the size of the touch capacitor can be controlled.

[0167] If H7 is too large, the capacitance of the touch capacitor will be too small; if H7 is too small, the noise of the acquired touch capacitor change signal will be too large. Set H7 to 2μm to 5μm to balance the capacitance of the touch capacitor and the noise of the acquired touch capacitor change signal. Optionally, H7 is 2μm, 3μm, 4μm, or 5μm.

[0168] Please refer to Figure 3 and Figure 4In some embodiments, the orthographic projection of the second electrode 41 on the substrate 1 overlaps with the orthographic projections of the plurality of light-emitting functional structures 31 on the substrate 1 , and the second electrode 41 is electrically connected to the plurality of light-emitting functional structures 31 .

[0169] One second electrode 41 can be electrically connected to a plurality of light-emitting functional structures 31 , thereby simplifying the circuit design of the second electrode 41 .

[0170] In some embodiments, a plurality of light-emitting functional structures 31 are arranged in a second direction Y to form a light-emitting group 32, and a plurality of light-emitting groups 32 are arranged in a third direction Z; a second electrode 41 extends in the second direction Y, a plurality of second electrodes 41 are arranged in a third direction Z, and a support portion 22 is disposed between the second electrodes 41 arranged in the third direction Z; an orthographic projection of the second electrode 41 on the substrate 1 overlaps with an orthographic projection of the light-emitting group 32 on the substrate 1, and the second electrode 41 is electrically connected to the light-emitting functional structure 31 in the light-emitting group 32.

[0171] The first direction X, the second direction Y and the third direction Z intersect each other. Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0172] The second electrodes 41 may extend along the second direction Y and be electrically connected to the plurality of light-emitting functional structures 31 extending along the second direction Y. The second electrodes 41 arranged at intervals along the third direction Z are spaced apart by the support portions 22 , so that adjacent second electrodes 41 may achieve different potentials.

[0173] In some embodiments, the first touch electrodes 42 extend along the second direction Y, a plurality of first touch electrodes 42 are arranged at intervals along the third direction Z, and the support portion 22 is disposed between the second electrodes 41 and the first touch electrodes 42 adjacent to each other along the third direction Z.

[0174] The first touch electrode 42 can extend along the second direction Y together with the second electrode 41, thereby increasing the area of ​​the second electrode 41 and the first touch electrode 42 facing each other. The support portion 22 is disposed between the second electrode 41 and the first touch electrode 42 adjacent to each other along the third direction Z, so that the second electrode 41 and the first touch electrode 42 are insulated by the support portion 22.

[0175] In some embodiments, the orthographic projection of the first touch electrode 42 on the substrate 1 is located between the orthographic projections of adjacent light-emitting groups 32 on the substrate 1 to reduce or avoid the first touch electrode 42 blocking the light of the light-emitting functional structure 31 .

[0176] See also Figure 5 In some embodiments, the orthographic projections of the plurality of first touch electrodes 42 on the substrate 1 are located between the orthographic projections of adjacent second electrodes 41 on the substrate 1 .

[0177] A plurality of first touch electrodes 42 may be disposed between adjacent second electrodes 41 to increase the distribution density of touch capacitance and improve touch resolution.

[0178] In some embodiments, the second electrode layer 4 further includes a plurality of spaced second touch electrodes 43 . The second touch electrodes 43 are located on a side of the pixel defining portion 21 facing away from the substrate 1 . The second touch electrodes 43 are disposed between adjacent support portions 22 .

[0179] The orthographic projection of the second touch electrode 43 on the substrate 1 is at least partially located between the orthographic projections of adjacent first touch electrodes 42 on the substrate 1 , and the second touch electrode 43 and the adjacent first touch electrode 42 form a touch capacitor.

[0180] The second touch electrode 43 can be prepared together with the first touch electrode 42 and the second electrode 41. The electrode material falls between the adjacent support portions 22, part of the electrode material falls into the pixel opening 23 between a part of the adjacent support portions 22 to form the second electrode 41, part of the electrode material falls on the pixel defining portion 21 between another part of the adjacent support portions 22 to form the second touch electrode 43, and part of the electrode material falls on the side of the support portion 22 away from the substrate 1 to form the first touch electrode 42.

[0181] The second touch electrodes 43 and the adjacent first touch electrodes 42 form touch capacitors to increase the distribution density of the touch capacitors and improve the touch resolution.

[0182] In some embodiments, the orthographic projection of the second touch electrode 43 on the substrate 1 partially overlaps with the orthographic projection of the first touch electrode 42 on the substrate 1 .

[0183] Since the second touch electrode 43 can be prepared together with the first touch electrode 42 and the second electrode 41, the electrode materials are separated by the isolation portion 51, so that the orthographic projection of the second touch electrode 43 formed on the substrate 1 partially overlaps with the orthographic projection of the first touch electrode 42 on the substrate 1, thereby increasing the relative area of ​​the first touch electrode 42 and the second touch electrode 43, which is beneficial to increasing the capacitance value of the touch capacitor.

[0184] Please refer to Figure 6 In some embodiments, a plurality of light-emitting functional structures 31 are arranged in intervals along the second direction Y to form light-emitting groups 32, and a plurality of light-emitting groups 32 are arranged in intervals along the third direction Z; the second electrodes 41 extend along the second direction Y, and a plurality of second electrodes 41 are arranged in intervals along the third direction Z, and the support portion 22 is disposed between the second electrodes 41 arranged in the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other;

[0185] The second electrode 41 is electrically connected to the light-emitting functional structure 31 in the light-emitting group 32. The first touch electrode 42 and the second touch electrode 43 extend along the second direction Y. The plurality of second touch electrodes 43 and the plurality of first touch electrodes 42 are arranged in a staggered manner along the third direction Z. The support portion 22 is disposed between the first touch electrode 42 and the second touch electrode 43 arranged along the third direction Z.

[0186] The second touch electrode 43 may extend along the second direction Y together with the second electrode 41 and the first touch electrode 42, thereby increasing the area of ​​the first touch electrode 42 and the second touch electrode 43 facing each other. The support portion 22 is disposed between the second touch electrode 43 and the first touch electrode 42 adjacent to each other along the third direction Z, so that the second touch electrode 43 and the first touch electrode 42 are insulated by the support portion 22.

[0187] In some embodiments, the orthographic projection of the second touch electrode 43 on the substrate 1 is located between the orthographic projections of adjacent light-emitting groups 32 on the substrate 1 to reduce or avoid the second touch electrode 43 blocking the light-emitting functional structure 31 from emitting light.

[0188] See also Figure 7 In some embodiments, the display panel also includes a second electrode layer 4, the second electrode layer 4 includes a plurality of second electrodes 41 and a plurality of auxiliary electrodes 44 that are spaced apart from each other, the second electrode is located on the side of the light-emitting functional structure 31 that is away from the substrate 1, the auxiliary electrode 44 is located on the side of at least one isolation portion 51 that is away from the substrate 1, and the auxiliary electrode 44 connects at least two second electrodes 41.

[0189] By providing the auxiliary electrode 44 , each second electrode 41 can form a surface electrode, so as to simplify the circuit arrangement of the second electrode 41 .

[0190] In some embodiments, the display panel further includes an encapsulation layer 6 , and the encapsulation layer 6 is located on a side of the second electrode layer 4 facing away from the substrate 1 .

[0191] After the second electrode 41 and the first touch electrode 42 are prepared, the entire surface can be encapsulated by the encapsulation layer 6. The second electrode 41 and the first touch electrode 42 are encapsulated by the encapsulation layer 6, thereby reducing the water and oxygen entering the light-emitting functional layer 3.

[0192] In some embodiments, the encapsulation layer 6 includes a first encapsulation layer 61 , which covers a side of the second electrode 41 facing away from the substrate 1 , a side of the first touch electrode 42 facing away from the substrate 1 , and a side of the support portion 22 facing away from the substrate 1 .

[0193] The first encapsulation layer 61 is used to encapsulate the second electrode 41 and the first touch electrode 42. The first encapsulation layer 61 may include inorganic materials. The first encapsulation layer 61 may improve the barrier capability of the display panel to water and oxygen, and prevent external water and oxygen from entering the light-emitting functional layer 3, thereby affecting the light emission of the light-emitting functional structure 31. The first encapsulation layer 61 may be formed on one side of the second electrode 41 and the first touch electrode 42 based on a chemical vapor deposition (CVD) process. The first encapsulation layer 61 may also cover the support portion 22 and the isolation portion 51, thereby reducing water and oxygen from entering the light-emitting functional layer 3 from the side of the light-emitting functional layer 3 away from the substrate 1.

[0194] In some embodiments, the encapsulation layer further includes a second encapsulation layer 62 , and the second encapsulation layer 62 is located on a side of the first encapsulation layer 61 facing away from the substrate 1 .

[0195] The second encapsulation layer 62 can be fully encapsulated, and the first encapsulation layer 61 and the second encapsulation layer 62 can be made of different materials, so that the first encapsulation layer 61 and the second encapsulation layer 62 can have different properties to improve the ability of the display panel to resist water and oxygen.

[0196] In some embodiments, the first encapsulation layer 61 is an inorganic encapsulation layer, and the second encapsulation layer 62 is an organic encapsulation layer.

[0197] The first encapsulation layer 61 is an inorganic insulating material, and the first encapsulation layer 61 can be directly arranged to contact the second electrode 41, the first touch electrode 42, the support portion 22, and the isolation portion 51. Compared with the organic material layer, the inorganic material layer has a better ability to block water and oxygen. The light-emitting functional layer 3 is encapsulated by the first encapsulation layer 61 to improve the ability of the display panel to resist water and oxygen. Compared with the inorganic material layer, the organic material layer has better flexibility and good film-forming properties. The light-emitting functional layer 3 is encapsulated by the organic material layer and the inorganic material layer together to improve the comprehensive ability of the display panel to resist water and oxygen.

[0198] In some embodiments, the encapsulation layer further includes a third encapsulation layer 63 , and the third encapsulation layer 63 is located on a side of the second encapsulation layer 62 facing away from the substrate 1 .

[0199] By providing the third encapsulation layer 63 , the ability of the light-emitting functional layer 3 to isolate water and oxygen is further improved.

[0200] In some embodiments, the third encapsulation layer 63 is an inorganic encapsulation layer.

[0201] The material of the third encapsulation layer 63 may be the same as that of the first encapsulation layer 61 to simplify the manufacturing process. Optionally, the material of the third encapsulation layer 63 may be different from that of the first encapsulation layer 61 .

[0202] See also Figure 8 and Fig. 9 The embodiment of the second aspect of the present application further provides a method for preparing a display panel, comprising:

[0203] S100, providing a substrate 1;

[0204] S200, sequentially disposing a first insulating material layer 20 and a second insulating material layer 50 on one side of the substrate 1;

[0205] S300, patterning the second insulating material layer 50 and the first insulating material layer 20 in sequence, the first insulating material layer 20 forms a first insulating layer 2, the first insulating layer 2 includes at least one supporting portion 22, the at least one supporting portion 22 encloses a plurality of first openings 24, and in a first direction X perpendicular to the substrate 1, the supporting portion 22 has a first thickness H1; the second insulating material layer 50 forms a second insulating layer 5, the second insulating layer 5 includes at least one isolating portion 51, the at least one isolating portion 51 encloses a plurality of second openings 52, the second openings 52 are connected to the corresponding first openings 24 to form an isolating opening 25, the orthographic projection of the at least one isolating portion 51 on the substrate 1 covers the orthographic projection of the at least one supporting portion 22 on one side close to the at least one isolating portion 51 on the substrate 1, the isolating portion 51 has a second thickness H2 in the first direction X, and the second thickness H2 is less than the first thickness H1;

[0206] S400 , forming a light-emitting functional layer 3 on one side of the substrate 1 , wherein the light-emitting functional layer 3 includes a plurality of light-emitting functional structures 31 , and the light-emitting functional structures 31 are disposed in the isolation openings 25 .

[0207] Since the method for preparing a display panel provided in the second aspect of the present application can prepare a display panel including any embodiment of the first aspect, the display device provided in the second aspect of the present application has the beneficial effects of the display panel of the first aspect, which will not be repeated here.

[0208] In some embodiments, S400 includes:

[0209] S500, laying electrode material on one side of the substrate 1, part of the electrode material is located on the side of the light-emitting functional structure 31 away from the substrate 1, forming a plurality of spaced second electrodes 41, the second electrodes 41 are electrically connected to the light-emitting functional structure 31, and the support portion 22 is arranged between adjacent second electrodes 41; part of the electrode material falls on the side of the support portion 22 away from the substrate 1, forming a plurality of spaced first touch electrodes 42, the orthographic projection of the first touch electrode 42 on the substrate 1 is at least partially located between the orthographic projections of the adjacent second electrodes 41 on the substrate 1, and the second electrode 41 cooperates with the adjacent first touch electrodes 42 to form a touch capacitor.

[0210] In S500, the electrode material can be deposited on the substrate 1 based on a chemical vapor deposition process. Part of the electrode material falls into the adjacent support portion 22 and accumulates on the side of the light-emitting functional structure 31 away from the substrate 1 to form the second electrode 41, and part of the electrode material falls on the side of the support portion 22 away from the substrate 1 to form the first touch electrode 42. Since the electrode material has a large drop at the edge of the support portion 22, the second electrode 41 and the first touch electrode 42 are spaced apart and do not contact each other, and the second electrode 41 and the first touch electrode 42 are prepared in the same step.

[0211] In some embodiments, S200 includes:

[0212] S210, etching the second insulating material layer 50, so that the second insulating material layer 50 forms a second insulating layer 5, wherein the second insulating layer 5 includes a plurality of isolation portions 51, and second openings 52 are formed between adjacent isolation portions 51.

[0213] S220 , etching the first insulating material layer 20 exposed from the second opening 52 , so that a plurality of support portions 22 are formed in the first insulating material layer 20 .

[0214] In S210, the second insulating material layer 50 may be patterned by dry etching to form the second insulating layer 5. For example, a patterned photoresist 10 is prepared on the second insulating material layer 50, and the second insulating material layer 50 is dry-etched by the photoresist 10 to form the second insulating layer 5 having the second opening 52.

[0215] In S220 , the first insulating material layer 20 may be partially patterned by dry etching to form spaced support portions 22 .

[0216] In some embodiments, in the step of etching the first insulating material layer 20 exposed from the second opening 52 , the etching rate of the first insulating material layer 20 is greater than the etching rate of the second insulating material layer 50 to reduce damage to the second insulating layer 5 during the etching process of the first insulating material layer 20 .

[0217] In some embodiments, S220 includes:

[0218] The first insulating material layer 20 exposed from the first opening 24 is etched until the first electrode 71 is exposed from the pixel opening 23 formed by etching, thereby obtaining a pixel defining portion 21 having the pixel opening 23 .

[0219] The first insulating material layer 20 may be patterned by dry etching to form the pixel opening 23 .

[0220] In some embodiments, the thickness of the first insulating material layer 20 in the first direction is 3 μm to 4 μm.

[0221] In some embodiments, the thickness of the second insulating material layer 50 in the first direction is 3000 Å to 6000 Å.

[0222] The thickness of the first insulating material layer 20 and the second insulating material layer 50 is adjusted to control the spacing distance between the second electrode 41 and the first touch electrode 42 , so as to obtain the desired capacitance value of the touch capacitor.

[0223] In some embodiments, Figure 8 As shown in (a), a first insulating material layer 20 and a second insulating material layer 50 are sequentially arranged on one side of the substrate 1; Figure 8 As shown in (b), a patterned photoresist 10 is prepared on the second insulating material layer 50, and the second insulating material layer 50 is patterned by the photoresist 10 to form a second insulating layer 5 having a second opening 52; Figure 8 In (c), the first insulating material layer 20 is patterned to form spaced support portions 22; Figure 8 In (d), the first insulating material layer 20 is patterned to obtain a pixel defining portion 21 having a pixel opening 23. Fig. 9 In (a), a light-emitting functional structure 31 is formed in the pixel opening 23; Fig. 9 In (b), a second electrode 41 is formed on a side of the light-emitting functional structure 31 facing away from the substrate, and a first touch electrode 42 is formed on a side of the isolation portion 51 facing away from the substrate.

[0224] See also Figures 1 to 7 The embodiment of the third aspect of the present application also provides a display panel, a display panel comprising a substrate 1, a first insulating layer 2, a light-emitting functional layer 3 and a second insulating layer 5, the first insulating layer 2 is arranged on one side of the substrate 1, the first insulating layer 2 comprises at least one supporting portion 22, at least one supporting portion 22 encloses a plurality of first openings 24; the second insulating layer 5 is arranged on the side of the first insulating layer 2 away from the substrate 1, the second insulating layer 5 comprises at least one isolation portion 51, at least one isolation portion 51 encloses a plurality of second openings 52, the second openings 52 are connected to the corresponding first openings 24 to form isolation openings 25, the orthographic projection of at least one isolation portion 51 on the substrate 1 covers the orthographic projection of at least one supporting portion 22 on one side close to at least one isolation portion 51 on the substrate 1, and the material of at least one isolation portion 51 comprises an inorganic material; the light-emitting functional layer 3 comprises a plurality of light-emitting functional structures 31, and the light-emitting functional structures 31 are arranged in the isolation openings 25.

[0225] In the embodiment provided in the present application, the first insulating layer 2 is provided to include a supporting portion 22, so that the first insulating layer 2 has the function of isolating adjacent light-emitting functional structures 31; the orthographic projection of at least one isolation portion 51 on the substrate 1 covers the orthographic projection of at least one support portion 22 on one side close to at least one isolation portion 51 on the substrate 1, so that the preparation material set on the entire surface can be isolated by the supporting portion 22 and the isolation portion 51 to form a functional layer of the desired structure, and the material of the isolation portion 51 is provided to include an inorganic material to improve the insulation between the two mutually isolated material portions.

[0226] In some embodiments, the first insulating layer 2 also includes a pixel defining portion 21, which encloses a plurality of pixel openings 23, the pixel openings 23 are connected to the corresponding isolation openings 25, and at least one supporting portion 22 is arranged on the side of the pixel defining portion 21 away from the substrate 1; the pixel defining portion 21 and at least one supporting portion 22 are made of the same material.

[0227] The pixel defining portion 21 and the supporting portion 22 may be made of the same material and based on the same process, thereby simplifying the manufacturing steps.

[0228] In some embodiments, the pixel defining portion 21 and at least one supporting portion 22 are an integrated structure. The supporting portion 22 can be understood as a structure extending from the pixel defining portion 21 in a direction away from the substrate 1. For example, a first insulating material layer is provided, and the first insulating material layer is patterned to obtain the supporting portion 22. The first insulating material layer is further patterned based on the gaps between adjacent supporting portions 22 to obtain the pixel defining portion 21 having the pixel opening 23.

[0229] The pixel defining portion 21 surrounds a plurality of pixel openings 23, and the light-emitting functional structure 31 may be partially disposed in the pixel opening 23. The pixel defining portion 21 defines the setting range of the light-emitting functional structure 31, and the pixel defining portion 21 is spaced between adjacent light-emitting functional structures 31. The number of pixel openings 23 may be the same as the number of light-emitting functional structures 31, and the pixel openings 23 are disposed in a one-to-one correspondence with the light-emitting functional structures 31. Optionally, the light-emitting functional structure 31 and the isolation opening 25 are disposed in a one-to-one correspondence, that is, the pixel opening 23 is disposed in a one-to-one correspondence with the light-emitting functional structure 31, and the pixel opening 23 is disposed in a one-to-one correspondence with the isolation opening 25.

[0230] In some embodiments, the display panel further includes a first electrode layer 7 including a plurality of first electrodes 71 , a portion of the first electrode 71 is located between the substrate 1 and the pixel defining portion 21 , and another portion of the first electrode 71 is exposed from the pixel opening 23 .

[0231] The side of the first electrode 71 facing away from the substrate 1 is in contact with the light-emitting functional structure 31, so as to realize the electrical connection between the first electrode 71 and the light-emitting functional structure 31. A second electrode 41 may also be provided on the side of the light-emitting functional structure 31 facing away from the substrate 1, and the second electrode 41, the light-emitting functional structure 31 and the first electrode 71 are stacked in sequence. One of the second electrode 41 and the first electrode 71 may be a cathode, and the other may be an anode. The second electrode 41 and the first electrode 71 are respectively connected to the light-emitting functional structure 31 and are used to drive the light-emitting functional structure 31 to emit light. The pixel defining portion 21 is provided between adjacent first electrodes 71, so that the pixel defining portion 21 can insulate the adjacent first electrodes 71.

[0232] In some embodiments, the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1 .

[0233] The orthographic projection of the supporting portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1, that is, the area of ​​the orthographic projection of the supporting portion 22 on the substrate 1 is smaller than the area of ​​the orthographic projection of the pixel defining portion 21 on the substrate 1, which is beneficial for the pixel defining portion 21 to support the supporting portion 22, and to a certain extent avoids or reduces the support portion 22 from blocking the light emitted by the light-emitting functional structure 31 arranged in the pixel opening 23.

[0234] The functional layer prepared on the side of the second insulating layer 5 away from the substrate is the second electrode layer 4 as an example for explanation. The electrode material used to prepare the second electrode layer 4 can be arranged corresponding to the entire surface of the display panel. Since the support portion 22 is arranged on the side of the pixel defining portion 21 away from the substrate 1, and the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the pixel defining portion 21 on the substrate 1, part of the electrode material falls into the adjacent support portion 22 and accumulates on the side of the light-emitting functional structure 31 away from the substrate 1 to form the second electrode 41, and part of the electrode material falls on the side of the support portion 22 away from the substrate 1 to form the first touch electrode 42. Since the electrode material has a large drop at the edge of the support portion 22, the second electrode 41 and the first touch electrode 42 are spaced and not in contact, and the second electrode 41 and the first touch electrode 42 are prepared in the same step.

[0235] In some embodiments, the orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the support portion 22 close to the substrate 1 on the substrate 1 .

[0236] The orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the support portion 22 close to the substrate 1 on the substrate 1, that is, the end of the support portion 22 facing away from the substrate 1 is small, and the end close to the substrate 1 is large, which is conducive to stable support of the support portion 22 on the pixel defining portion 21.

[0237] In some embodiments, the orthographic projection of the support portion 22 on the substrate 1 is located within the orthographic projection of the isolation portion 51 on the substrate 1 .

[0238] The isolation portion 51 extends outward a predetermined distance relative to the support portion 22, which is conducive to the electrode material being disconnected at the edge of the isolation portion 51, forming a state in which part of the preparation material is located on the isolation portion 51 and part of the electrode material is located at the pixel opening 23, so as to facilitate defining the pattern of the second electrode 41 and the first touch electrode 42 through the support portion 22.

[0239] In some embodiments, the orthographic projection of the surface of the support portion 22 facing away from the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the isolation portion 51 close to the substrate 1 on the substrate 1 .

[0240] The isolation portion 51 is completely covered with the support portion 22, and the support portion 22 is recessed relative to the isolation portion 51 in a direction away from the pixel opening 23. When preparing the second electrode 41 and the first touch electrode 42, the electrode material has a large drop at the edge of the isolation portion 51, and the support portion 22 is recessed, so that the electrode material is difficult to connect outside the isolation portion 51, and thus a break is found, forming the second electrode 41 and the first touch electrode 42 isolated from each other.

[0241] Optionally, the support portion 22 is concave relative to the isolation portion 51 in a direction away from the central axis of the pixel opening 23, so that the electrode material is disconnected at the isolation portion 51, and the etching waste generated by etching the support portion 22 falls on the support portion 22, which is easy to clean.

[0242] In some embodiments, the minimum distance H3 from the edge of the isolation portion 51 close to the pixel opening 23 to the surface of the support portion 22 facing away from the substrate 1 is 0.3 μm to 1 μm.

[0243] If H3 is too small, the electrode material cannot be effectively isolated. If H3 is too large, the support part 22 will not be stable enough to support the isolation part 51. H3 is set to 0.3 μm to 1 μm to balance the isolation between the second electrode 41 and the first touch electrode 42 and the stability of the support part 22 supporting the isolation part 51.

[0244] In some embodiments, the support portion 22 includes a first support sub-portion 221 and a second support sub-portion 222 , wherein the first support sub-portion 221 is located on a side of the second support sub-portion 222 facing away from the substrate 1 , and the orthographic projection of the first support sub-portion 221 on the substrate 1 is located within the orthographic projection of the second support sub-portion 222 on the substrate 1 .

[0245] Before preparing the patterned support portion 22, a patterned second insulating layer 5 may be prepared first, and the first insulating material layer between the exposed adjacent isolation portions 51 may be dry-etched to prepare the spaced support portions 22. Since the second insulating layer 5 shields part of the first insulating material layer, the orthographic projection of the first support sub-portion 221 formed by etching on the substrate 1 is located within the orthographic projection of the second support sub-portion 222 on the substrate 1, that is, the support portion 22 is larger at one end close to the substrate 1 and smaller at the end away from the substrate 1.

[0246] In some embodiments, an orthographic projection of a surface of the first supporting sub-portion 221 close to the substrate 1 on the substrate 1 is located within an orthographic projection of a surface of the first supporting sub-portion 221 facing away from the substrate 1 on the substrate 1 .

[0247] During the dry etching process of the first insulating material layer, the etching rate of the insulating material layer used to form the second insulating material layer 5 is lower than that of the first insulating material layer, and the second insulating layer 5 partially blocks the first insulating material layer, so that the orthographic projection of the surface of the formed first supporting sub-portion 221 close to the substrate 1 on the substrate 1 is located within the orthographic projection of the surface of the first supporting sub-portion 221 facing away from the substrate 1 on the substrate 1.

[0248] In some embodiments, the cross-sectional area of ​​the first supporting sub-portion 221 gradually increases from the substrate 1 to the light-emitting functional layer 3 , and the cross-sectional area of ​​the first supporting sub-portion 221 away from the substrate 1 may be an inverted trapezoid.

[0249] In some embodiments, the cross-sectional area of ​​the second supporting sub-portion 222 gradually decreases along the direction from the substrate 1 to the light-emitting functional layer 3, and the cross-sectional area of ​​the first supporting sub-portion 221 along the direction away from the substrate 1 may be an upright trapezoid. The first supporting sub-portion 221 and the second supporting sub-portion 222 are prepared by the same dry etching step, so that the junction of the first supporting sub-portion 221 and the second supporting sub-portion 222 is a smooth surface.

[0250] In some embodiments, in a first direction X perpendicular to the substrate 1 , the support portion 22 has a first thickness H1 , and the isolation portion 51 has a second thickness H2 in the first direction X, and the second thickness H2 is less than the first thickness H1 .

[0251] The first thickness H1 may be increased to increase the spacing distance between two mutually isolated material portions along the first direction X.

[0252] The material of the first insulating layer 2 includes an organic material, and the material of the second insulating layer 5 includes an inorganic material, so as to facilitate the preparation of the organic support portion 22 and the inorganic isolation portion 51 .

[0253] In some embodiments, the material of the second insulating layer 5 includes a silicon-containing inorganic material.

[0254] The second insulating layer 5 includes a silicon-containing inorganic material such as silicon nitride, silicon oxide or silicon oxynitride. The silicon-containing inorganic material layer can be formed between the insulating first touch electrode 42 and the support portion 22. The silicon-containing inorganic material layer has stable chemical properties, and the process of preparing the first insulating layer 2 has little or no damage to the silicon-containing inorganic material layer.

[0255] In some embodiments, the second insulating layer 5 is a silicon oxide layer and / or a silicon nitride layer. Optionally, the second insulating layer 5 is a silicon oxide layer.

[0256] In some embodiments, the light-emitting functional structure 31 has a third thickness H4 in the first direction X, and the third thickness H4 is less than the first thickness H1.

[0257] The third thickness H4 is smaller than the first thickness H1 to prevent the light-emitting functional structure 31 from protruding in a direction away from the substrate 1 relative to the support portion 22 .

[0258] In some embodiments, the display panel further includes a pixel defining portion 21 and a first electrode layer 7, the pixel defining portion 21 encloses a plurality of pixel openings 23, the pixel openings 23 are connected to corresponding isolation openings 25, at least one support portion 22 is disposed on a side of the pixel defining portion 21 away from the substrate 1, and the pixel defining portion 21 has a fourth thickness H5 in the first direction X; the first electrode layer 7 includes a plurality of first electrodes 71, a portion of the first electrode 71 is located between the substrate 1 and the pixel defining portion 21, and another portion is exposed from the pixel opening 23, and the first electrode 71 has a fifth thickness H6 in the first direction X;

[0259] The sum of the third thickness H4 and the fifth thickness H6 is smaller than the sum of the first thickness H1 and the fourth thickness H5.

[0260] The sum of the third thickness H4 and the fifth thickness H6 is the total thickness of the stacked arrangement of the first electrode 71 and the light-emitting functional structure 31. The sum of the first thickness H1 and the fourth thickness H5 is the total thickness of the pixel defining portion 21 and the supporting portion 22. (H4+H6) is set to be smaller than (H1+H5) to prevent the light-emitting functional structure 31 from protruding in a direction away from the substrate 1 relative to the supporting portion 22, which is conducive to forming a partition functional layer on the side of the light-emitting functional structure 31 away from the substrate 1.

[0261] In some embodiments, (H1+H5) is 3 μm to 4 μm, and H2 is 3000A to 6000A.

[0262] The distance between the mutually isolated parts along the first direction is controlled by adjusting the thickness of the first insulating layer 2 and the second insulating layer 5. Optionally, (H1+H5) is 3μm, 3.5μm, 4μm, and H2 is 3000A, 4000A, 5000A, 5500A, 6000A.

[0263] In some embodiments, the second electrode layer 4 includes a plurality of second electrodes 41 and a plurality of first touch electrodes 42 spaced apart from each other, the second electrodes 41 are located on the side of the light-emitting functional structure 31 facing away from the substrate 1, the first touch electrodes 42 are located on the side of at least one supporting portion 22 facing away from the substrate 1, at least a portion of the orthographic projection of the second electrode 41 on the substrate 1 is located between the orthographic projections of adjacent first touch electrodes 42 on the substrate 1, and the second electrode 41 and the adjacent first touch electrodes 42 form a touch capacitor.

[0264] The second electrode 41 is in contact with the light-emitting functional structure 31 on one side close to the substrate 1 to achieve electrical connection between the second electrode 41 and the light-emitting functional structure 31. The support portion 22 is disposed between adjacent second electrodes 41, so that the support portion 22 can insulate adjacent second electrodes 41 and reduce crosstalk between adjacent second electrodes 41.

[0265] The first touch electrode 42 is located on the side of the support portion 22 away from the substrate 1, the second electrode 41 is located between adjacent support portions 22, and the orthographic projection of the first touch electrode 42 on the substrate 1 is at least partially located between the orthographic projections of adjacent second electrodes 41 on the substrate 1, which can not only reduce the light emitted by the light-emitting functional structure 31 blocked by the first touch electrode 42, but also enable multiple first touch electrodes 42 and multiple second electrodes 41 to be arranged alternately, and touch capacitors can be formed between adjacent first touch electrodes 42 and second electrodes 41. When a user's finger touches the display panel, the electrical signal of the touch capacitor will change, and the user's touch position on the display panel can be determined by analyzing the electrical signal of the touch capacitor change.

[0266] The second electrode layer 4 is arranged on the side of the light-emitting functional layer 3 away from the substrate 1. In order to prevent the second electrode layer from affecting the display of the light-emitting functional layer 3, the second electrode layer 4 can be made of a light-transmitting material. By arranging that the orthographic projection of the first touch electrode 42 on the substrate 1 is at least partially located between the orthographic projections of the adjacent second electrodes 41 on the substrate 1, the influence of the first touch electrode 42 on the light emission of the light-emitting functional structure 31 is reduced.

[0267] By arranging the first touch electrode 42 on the side of the support portion 22 facing away from the substrate 1, the capacitance value of the touch capacitor formed by the second electrode 41 and the first touch electrode 42 can be adjusted by controlling the distance between the second electrode 41 and the first touch electrode 42. By arranging the second electrode 41 and the adjacent first touch electrode 42 to form a touch capacitor, the second electrode 41 can not only be used as an output end or an input end to provide an electrical signal to the light-emitting functional structure 31, but also can be used as a plate to form a touch capacitor with the first touch electrode 42 to realize the touch function. By reusing the second electrode 41, it is possible to save the need to set up some touch electrodes with a single function while maintaining the same touch resolution, thereby reducing the thickness of the display panel.

[0268] In some embodiments, the second electrode 41 extends from the pixel opening 23 to a surface of the pixel defining portion facing away from the substrate 1 .

[0269] The electrode material portion falling between adjacent support portions 22 may be gradually accumulated in the pixel opening 23 , and the portion may fall on the pixel defining portion 21 , forming a structure in which the second electrode 41 extends from the pixel opening 23 to the surface of the pixel defining portion away from the substrate 1 .

[0270] In some embodiments, the second electrode 41 is spaced apart from the support portion 22 .

[0271] By controlling the length of the isolation portion 51 extending relative to the support portion 22, the coverage area of ​​the electrode material falling on the pixel defining portion 21 and the isolation portion 51 can be controlled, so that the second electrode 41 and the support portion 22 are spaced apart, which is conducive to avoiding current crosstalk between adjacent second electrodes 41. The functional layer located on one side of the second electrode 41 can fill the gap between the second electrode 41 and the support portion 22. The functional layer located on one side of the second electrode 41 can be an encapsulation layer 6.

[0272] In some other embodiments, the second electrode 41 overlaps the support portion 22 .

[0273] When the support portion 22 has good insulation capability, the second electrode 41 overlaps with the support portion 22 , and the support portion 22 can effectively insulate the adjacent second electrode 41 .

[0274] In some embodiments, the orthographic projection of the first touch electrode 42 on the substrate 1 partially overlaps with the orthographic projection of the second electrode 41 on the substrate 1 .

[0275] When the second electrode 41 and the first touch electrode 42 are prepared by using the isolation part 51 to separate the electrode material in the same step, the second electrode 41 and the first touch electrode 42 formed by the electrode material separated by the isolation part 51 overlap in the orthographic projection part of the substrate 1. The size of the touch capacitor is related to the relative area between the electrodes. The second electrode 41 and the first touch electrode 42 overlap in the orthographic projection part of the substrate 1, which is conducive to forming a touch capacitor and improving the capacitance value of the touch capacitor.

[0276] In some embodiments, the minimum distance H7 between the surface of the first touch electrode 42 close to the substrate 1 and the surface of the second electrode 41 away from the substrate 1 is 2 μm-5 μm.

[0277] By controlling the height of the support portion 22 and the isolation portion 51 in the direction away from the substrate 1, the distance between the first touch electrode 42 and the second electrode 41 can be controlled. The size of the touch capacitor is related to the spacing between the electrodes. By controlling the distance between the first touch electrode 42 and the second electrode 41, the size of the touch capacitor can be controlled.

[0278] If H7 is too large, the capacitance of the touch capacitor will be too small; if H7 is too small, the noise of the acquired touch capacitor change signal will be too large. Set H7 to 2μm to 5μm to balance the capacitance of the touch capacitor and the noise of the acquired touch capacitor change signal. Optionally, H7 is 2μm, 3μm, 4μm, or 5μm.

[0279] The embodiment of the fourth aspect of the present application also provides a display device, including the display panel of any of the first and third aspects, or the display panel prepared by the embodiment of the second aspect. Since the display device provided by the embodiment of the fourth aspect of the present application includes the display panel of any of the first and third aspects, or the display panel prepared by the embodiment of the second aspect, the display device provided by the embodiment of the fourth aspect of the present application has the beneficial effects of the display panel of any of the first, second and third aspects, which will not be described in detail here.

[0280] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0281] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; A first insulating layer, disposed on one side of the substrate, comprising at least one supporting portion, wherein the at least one supporting portion encloses a plurality of first openings, and the supporting portion has a first thickness in a first direction perpendicular to the substrate; A second insulating layer is provided on a side of the first insulating layer facing away from the substrate, and includes at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the at least one supporting portion on a side close to the at least one isolating portion on the substrate, the isolating portion has a second thickness in the first direction, and the second thickness is less than the first thickness; The light-emitting functional layer includes a plurality of light-emitting functional structures, and the light-emitting functional structures are arranged in the isolation openings.

2. The display panel according to claim 1, characterized in that: The first insulating layer further comprises: A pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate; Wherein, the pixel defining portion and the at least one supporting portion are made of the same material; Preferably, the pixel defining portion and the at least one supporting portion are an integrated structure; Preferably, the display panel further comprises a first electrode layer, the first electrode layer comprises a plurality of first electrodes, a portion of the first electrode is located between the substrate and the pixel defining portion, and another portion of the first electrode is exposed from the pixel opening; Preferably, the light-emitting functional structures and the isolation openings are arranged in a one-to-one correspondence.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the support portion on the substrate is located within the orthographic projection of the pixel defining portion on the substrate; Preferably, the orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within the orthographic projection of a surface of the support portion close to the substrate on the substrate; Preferably, the orthographic projection of the supporting portion on the substrate is located within the orthographic projection of the isolating portion on the substrate; Preferably, the orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within the orthographic projection of a surface of the isolation portion close to the substrate on the substrate; Preferably, the minimum distance between the edge of the isolation portion close to the pixel opening and the surface of the support portion facing away from the substrate is 0.3 μm to 1 μm; Preferably, the support portion comprises a first support sub-portion and a second support sub-portion, the first support sub-portion is located on a side of the second support sub-portion away from the substrate, and an orthographic projection of the first support sub-portion on the substrate is located within an orthographic projection of the second support sub-portion on the substrate; Preferably, the orthographic projection of the surface of the first supporting sub-part close to the substrate on the substrate is located within the orthographic projection of the surface of the first supporting sub-part away from the substrate on the substrate; Preferably, the cross-sectional area of ​​the first supporting sub-portion gradually increases along the direction from the substrate to the light-emitting functional layer; Preferably, a cross-sectional area of ​​the second supporting sub-portion gradually decreases along a direction from the substrate to the light-emitting functional layer.

4. The display panel according to claim 1, characterized in that: The material of the at least one supporting portion includes an organic material, and the material of the at least one isolating portion includes an inorganic material; Preferably, the material of the first insulating layer includes an organic material, and the material of the second insulating layer includes an inorganic material; Preferably, the material of the second insulating layer includes a silicon-containing inorganic material; Preferably, the material of the second insulating layer includes silicon oxide and / or silicon nitride.

5. The display panel according to claim 1, characterized in that: The light-emitting functional structure has a third thickness in the first direction, and the third thickness is less than the first thickness; Preferably, the display panel further includes: a pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, the at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate, and the pixel defining portion has a fourth thickness in the first direction; a first electrode layer, the first electrode layer comprising a plurality of first electrodes, a portion of the first electrode being located between the substrate and the pixel defining portion, and another portion of the first electrode being exposed from the pixel opening, and the first electrode having a fifth thickness in the first direction; The sum of the third thickness and the fifth thickness is less than the sum of the first thickness and the fourth thickness.

6. The display panel according to claim 1, characterized in that: Also includes: A second electrode layer, comprising a plurality of second electrodes and a plurality of first touch electrodes spaced from each other, wherein the second electrodes are located on a side of the light-emitting functional structure away from the substrate, and the first touch electrodes are located on a side of the at least one isolation portion away from the substrate; Wherein, at least a portion of the orthographic projection of the second electrode on the substrate is located between the orthographic projections of adjacent first touch electrodes on the substrate, and the second electrode and the adjacent first touch electrodes form a touch capacitor; Preferably, the display panel further comprises a pixel defining portion, the pixel defining portion encloses a plurality of pixel openings, and the second electrode extends from the pixel openings to a surface of the pixel defining portion away from the substrate; Preferably, the second electrode is spaced apart from the isolation portion; Preferably, the second electrode overlaps the isolation portion; Preferably, the minimum distance between a surface of the first touch electrode close to the substrate and a surface of the second electrode away from the substrate is 2 μm to 5 μm.

7. The display panel according to claim 6, characterized in that: The orthographic projection of the second electrode on the substrate overlaps with the orthographic projections of the plurality of light-emitting functional structures on the substrate, and the second electrode is electrically connected to the plurality of light-emitting functional structures; Preferably, a plurality of the light-emitting functional structures are arranged in a light-emitting group at intervals along the second direction, and a plurality of the light-emitting groups are arranged in a third direction at intervals; the second electrode extends in the second direction, and a plurality of the second electrodes are arranged in a third direction at intervals, and the support portion is arranged between the second electrodes arranged in the third direction, and the first direction, the second direction and the third direction intersect each other; The orthographic projection of the second electrode on the substrate overlaps with the orthographic projection of the light-emitting group on the substrate, and the second electrode is electrically connected to the light-emitting functional structure in the light-emitting group; Preferably, the first touch electrodes extend along the second direction, a plurality of the first touch electrodes are arranged at intervals along the third direction, and the support portion is disposed between the second electrodes and the first touch electrodes adjacent to each other along the third direction; Preferably, the orthographic projection of the first touch electrode on the substrate is located between the orthographic projections of adjacent light-emitting groups on the substrate.

8. The display panel according to claim 6, characterized in that: The orthographic projections of the plurality of first touch control electrodes on the substrate are located between the orthographic projections of adjacent second electrodes on the substrate; Preferably, the second electrode layer further comprises a plurality of spaced second touch electrodes, and the second touch electrodes are arranged between adjacent support portions; The orthographic projection of the second touch electrode on the substrate is at least partially located between the orthographic projections of adjacent first touch electrodes on the substrate, and the second touch electrode and the adjacent first touch electrode form a touch capacitor; Preferably, the display panel further comprises a pixel defining portion, the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, the at least one supporting portion is arranged on a side of the pixel defining portion away from the substrate, and the second touch electrode is located on a side of the pixel defining portion away from the substrate; Preferably, an orthographic projection of the second touch electrode on the substrate partially overlaps with an orthographic projection of the first touch electrode on the substrate.

9. The display panel according to claim 8, characterized in that: A plurality of the light-emitting functional structures are arranged in a second direction to form a light-emitting group, and a plurality of the light-emitting groups are arranged in a third direction; the second electrode extends in the second direction, and a plurality of the second electrodes are arranged in a third direction, and the support portion is arranged between the second electrodes arranged in the third direction, and the first direction, the second direction and the third direction intersect each other; The second electrode is electrically connected to the light-emitting functional structure in the light-emitting group, the first touch electrode and the second touch electrode extend along a second direction, a plurality of the second touch electrodes and a plurality of the first touch electrodes are arranged alternately and spaced along the third direction, and the support portion is disposed between the first touch electrode and the second touch electrode arranged along the third direction; Preferably, the orthographic projection of the second touch electrode on the substrate is located between the orthographic projections of adjacent light-emitting groups on the substrate.

10. The display panel according to claim 1, characterized in that: Also includes: The second electrode layer includes a plurality of second electrodes and a plurality of auxiliary electrodes spaced apart from each other, wherein the second electrodes are located on a side of the light-emitting functional structure away from the substrate, the auxiliary electrodes are located on a side of the at least one isolation portion away from the substrate, and the auxiliary electrodes connect at least two of the second electrodes.

11. A display panel, characterized in that: include: substrate; A first insulating layer, disposed on one side of the substrate, comprises at least one supporting portion, wherein the at least one supporting portion encloses a plurality of first openings, and a material of the at least one supporting portion comprises an organic material; A second insulating layer is provided on a side of the first insulating layer facing away from the substrate, comprising at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the at least one supporting portion on a side close to the at least one isolating portion on the substrate, and the material of the at least one isolating portion comprises an inorganic material; The light-emitting functional layer includes a plurality of light-emitting functional structures, and the light-emitting functional structures are arranged in the isolation openings.

12. The display panel according to claim 11, characterized in that: The first insulating layer further comprises: A pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, and the at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate; Wherein, the pixel defining portion and the at least one supporting portion are made of the same material; Preferably, the pixel defining portion and the at least one supporting portion are an integrated structure; Preferably, the display panel further comprises a first electrode layer, the first electrode layer comprises a plurality of first electrodes, a portion of the first electrode is located between the substrate and the pixel defining portion, and another portion of the first electrode is exposed from the pixel opening; Preferably, the light-emitting functional structures and the isolation openings are arranged in a one-to-one correspondence.

13. The display panel according to claim 12, characterized in that: The orthographic projection of the support portion on the substrate is located within the orthographic projection of the pixel defining portion on the substrate; Preferably, the orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within the orthographic projection of a surface of the support portion close to the substrate on the substrate; Preferably, the orthographic projection of the supporting portion on the substrate is located within the orthographic projection of the isolating portion on the substrate; Preferably, the orthographic projection of a surface of the support portion facing away from the substrate on the substrate is located within the orthographic projection of a surface of the isolation portion close to the substrate on the substrate; Preferably, the minimum distance between the edge of the isolation portion close to the pixel opening and the surface of the support portion facing away from the substrate is 0.3 μm to 1 μm; Preferably, the support portion comprises a first support sub-portion and a second support sub-portion, the first support sub-portion is located on a side of the second support sub-portion away from the substrate, and an orthographic projection of the first support sub-portion on the substrate is located within an orthographic projection of the second support sub-portion on the substrate; Preferably, the orthographic projection of the surface of the first supporting sub-part close to the substrate on the substrate is located within the orthographic projection of the surface of the first supporting sub-part away from the substrate on the substrate; Preferably, the cross-sectional area of ​​the first supporting sub-portion gradually increases along the direction from the substrate to the light-emitting functional layer; Preferably, a cross-sectional area of ​​the second supporting sub-portion gradually decreases along a direction from the substrate to the light-emitting functional layer.

14. The display panel according to claim 11, characterized in that: In a first direction perpendicular to the substrate, the support portion has a first thickness, and the isolation portion has a second thickness in the first direction, and the second thickness is smaller than the first thickness; Preferably, the material of the first insulating layer includes an organic material, and the material of the second insulating layer includes an inorganic material; Preferably, the material of the second insulating layer includes a silicon-containing inorganic material; Preferably, the material of the second insulating layer includes silicon oxide and / or silicon nitride.

15. The display panel according to claim 14, characterized in that: The light-emitting functional structure has a third thickness in the first direction, and the third thickness is less than the first thickness; Preferably, the display panel further includes: a pixel defining portion, wherein the pixel defining portion encloses a plurality of pixel openings, the pixel openings are connected to the corresponding isolation openings, the at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate, and the pixel defining portion has a fourth thickness in the first direction; a first electrode layer, the first electrode layer comprising a plurality of first electrodes, a portion of the first electrode being located between the substrate and the pixel defining portion, and another portion of the first electrode being exposed from the pixel opening, and the first electrode having a fifth thickness in the first direction; The sum of the third thickness and the fifth thickness is less than the sum of the first thickness and the fourth thickness.

16. The display panel according to claim 11, characterized in that: Also includes: A second electrode layer, comprising a plurality of second electrodes and a plurality of first touch electrodes spaced from each other, wherein the second electrodes are located on a side of the light-emitting functional structure away from the substrate, and the first touch electrodes are located on a side of the at least one isolation portion away from the substrate; Wherein, at least a portion of the orthographic projection of the second electrode on the substrate is located between the orthographic projections of adjacent first touch electrodes on the substrate, and the second electrode and the adjacent first touch electrodes form a touch capacitor; Preferably, the display panel further comprises a pixel defining portion, the pixel defining portion encloses a plurality of pixel openings, and the second electrode extends from the pixel openings to a surface of the pixel defining portion away from the substrate; Preferably, the second electrode is spaced apart from the isolation portion; Preferably, the second electrode overlaps the isolation portion; Preferably, the minimum distance between a surface of the first touch electrode close to the substrate and a surface of the second electrode away from the substrate is 2 μm to 5 μm.

17. A method for preparing a display panel, characterized in that: include: providing a substrate; A first insulating material layer and a second insulating material layer are sequentially provided on one side of the substrate; The second insulating material layer and the first insulating material layer are patterned in sequence, the first insulating material layer forms a first insulating layer, the first insulating layer includes at least one supporting portion, the at least one supporting portion encloses a plurality of first openings, and in a first direction perpendicular to the substrate, the supporting portion has a first thickness, the second insulating material layer forms a second insulating layer, the second insulating layer includes at least one isolating portion, the at least one isolating portion encloses a plurality of second openings, the second openings are connected to the corresponding first openings to form isolating openings, the orthographic projection of the at least one isolating portion on the substrate covers the orthographic projection of the at least one supporting portion on a side close to the at least one isolating portion on the substrate, the isolating portion has a second thickness in the first direction, and the second thickness is less than the first thickness; A light-emitting functional layer is formed on one side of the substrate, wherein the light-emitting functional layer includes a plurality of light-emitting functional structures, and the light-emitting functional structures are arranged in the isolation openings.

18. The preparation method according to claim 17, characterized in that: After forming the light-emitting functional layer on one side of the substrate, the method further comprises: Electrode material is laid on one side of the substrate, part of the electrode material is located on the side of the light-emitting functional structure away from the substrate, forming a plurality of spaced second electrodes, the second electrodes are electrically connected to the light-emitting functional structure, and the support portion is arranged between adjacent second electrodes; part of the electrode material falls on the side of the support portion away from the substrate, forming a plurality of spaced first touch electrodes, the orthographic projection of the first touch electrode on the substrate is at least partially located between the orthographic projections of adjacent second electrodes on the substrate, and the second electrode cooperates with the adjacent first touch electrode to form a touch capacitor.

19. The preparation method according to claim 17, characterized in that: The sequentially patterning the first insulating material layer and the second insulating material layer comprises: Performing an etching process on the second insulating material layer, so that the second insulating material layer forms a second insulating layer, wherein the second insulating layer includes a plurality of the isolation parts, and a second opening is formed between adjacent isolation parts; performing an etching process on the first insulating material layer exposed from the second opening, so that the first insulating material layer forms a plurality of the supporting parts; Preferably, in the step of sequentially patterning the first insulating material layer and the second insulating material layer, an etching rate of the first insulating material layer is greater than an etching rate of the second insulating material layer; Preferably, the etching process on the first insulating material layer exposed from the first opening comprises: Etching the first insulating material layer exposed from the first opening until the second electrode is exposed from the pixel opening formed by etching, thereby obtaining a pixel defining portion enclosing a plurality of the pixel openings, wherein the pixel openings are connected to the corresponding isolation openings, and the at least one supporting portion is disposed on a side of the pixel defining portion away from the substrate; Preferably, the thickness of the first insulating material layer in the first direction is 3 μm to 4 μm; Preferably, the thickness of the second insulating material layer in the first direction is 3000A-6000A.

20. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 16, or a display panel prepared by the method for preparing a display panel as claimed in any one of claims 17 to 19.

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