Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a display area and a non-display area arranged around at least part of the display area. The display panel comprises a substrate, a light-emitting unit, a shielding structure and a conductive layer, the light-emitting unit is formed on one side of the substrate and located in the display area, and the conductive layer is formed on the side, away from the substrate, of the light-emitting unit. The shielding structure is arranged between the conducting layer and the substrate and at least partially located in the non-display area, and the orthographic projection of the shielding structure on the substrate and the orthographic projection of the conducting layer on the substrate are arranged in an overlapped mode. According to the display panel provided by the invention, mutual interference between signals in the conductive layer and signals in the signal lines in the substrate can be reduced, so that the yield of the display panel is improved.

Description

[0001] Related Applications

[0002] This application claims the priority of Chinese Patent Application No. 202311596673.3, entitled "Display Panel and Its Manufacturing Method and Display Device", filed on November 24, 2023, the entire content of which is incorporated herein by reference. Technical Field

[0003] This application belongs to the field of display technology, and particularly relates to a display panel, a manufacturing method thereof, and a display device. Background Art

[0004] With the development of display technology, the performance requirements for display devices are getting higher and higher. AMOLED has been widely used and has gradually gained greater influence due to its excellent color saturation and image quality. However, in existing display devices, signal interference is prone to occur at the border, seriously affecting the performance of the display device. Summary of the Invention

[0005] Embodiments of this application provide a display panel, a manufacturing method thereof, and a display device, which can reduce the mutual interference between signals in the conductive layer and signals in the signal lines in the substrate, so as to improve the yield of the display panel.

[0006] An embodiment of the first aspect of the embodiments of this application provides a display panel, including a display area and a non-display area disposed around at least a part of the display area; the display panel includes:

[0007] A substrate, including a circuit structure;

[0008] A light-emitting unit, formed on one side of the substrate and located in the display area;

[0009] A conductive layer, formed on the side of the light-emitting unit facing away from the substrate;

[0010] A shielding structure, disposed between the conductive layer and the circuit structure of the substrate and at least partially located in the non-display area, and the orthographic projection of the shielding structure on the substrate overlaps with the orthographic projection of the conductive layer on the substrate.

[0011] According to an embodiment of the first aspect of the present invention, the shielding structure includes an isolation structure formed on one side of the substrate, the isolation structure includes a first part located in the display area and a second part located in the non-display area, the first part encloses a first opening, and the light-emitting unit is located in the first opening;

[0012] The orthographic projection of the second part on the substrate overlaps with the orthographic projection of the conductive layer on the substrate;

[0013] Preferably, in the non-display area, the positive projection of the second part on the substrate completely covers the positive projection of the conductive layer on the substrate;

[0014] Preferably, at least part of the film layer materials of the first part and the second part are the same and are prepared in the same layer;

[0015] Preferably, the second part is disposed around the display area in the non-display area.

[0016] Preferably, no second opening is provided on the second part.

[0017] According to an embodiment of the first aspect of the present invention, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked in a direction away from the substrate, and the shielding structure includes a shielding layer, and the shielding layer is prepared in the same layer as the second electrode;

[0018] Preferably, the positive projection of the shielding layer on the substrate and the positive projection of the conductive layer on the substrate are overlapped;

[0019] Preferably, in the non-display area, the positive projection of the shielding layer on the substrate completely covers the positive projection of the conductive layer on the substrate.

[0020] According to an embodiment of the first aspect of the present invention, the shielding structure includes an isolation structure and a shielding layer formed on one side of the substrate, the isolation structure includes a first part located in the display area and a second part located in the non-display area, the first part encloses a first opening, and the second part encloses a second opening;

[0021] The light-emitting unit is located in the first opening, and the shielding layer includes a first sub-part located in the second opening, and the first sub-part is electrically connected to the second opening;

[0022] Preferably, the shielding layer further includes a second sub-part located on the side of the second part away from the substrate;

[0023] Preferably, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked in a direction away from the substrate, and the shielding layer is prepared in the same layer as the second electrode or the first electrode;

[0024] Preferably, a light-emitting material layer is further included, the light-emitting material layer is disposed in the same layer as at least part of the light-emitting functional layer, and the light-emitting material layer includes a first section located in the second opening and a second section located on the side of the second part away from the substrate.

[0025] According to any of the foregoing embodiments of the first aspect of the present invention, the conductive layer includes a touch layer, the touch layer includes touch traces located in the non-display area, and the orthographic projection of the touch traces on the substrate is located within the orthographic projection of the shielding layer on the substrate, and / or within the orthographic projection of the isolation structure on the substrate;

[0026] Preferably, the substrate includes a metal layer, the metal layer includes metal traces located in the non-display area, and the orthographic projection of the touch traces on the metal layer overlaps at least partially with the metal traces.

[0027] According to any of the foregoing embodiments of the first aspect of the present invention, the non-display area includes at least one of the second openings, and the second openings are arranged around the display area.

[0028] According to any of the foregoing embodiments of the first aspect of the present invention, the touch traces include a trace partition extending along a partial area around the display area, and the orthographic projection of the trace partition on the substrate is located within the orthographic projection of the second opening on the substrate;

[0029] Preferably, the orthographic projection of the trace partition on the substrate is located within the orthographic projection of the shielding layer on the substrate.

[0030] According to any of the foregoing embodiments of the first aspect of the present invention, the touch traces include a trace partition extending along a partial area around the display area, a part of the orthographic projection of the trace partition on the substrate is located within the orthographic projection of the second opening on the substrate, and a part of the orthographic projection of the trace partition on the substrate is located within the orthographic projection of the second part on the substrate, and the edge of the orthographic projection of the second part on the substrate has no overlap with the orthographic projection of the trace partition on the substrate.

[0031] According to any of the foregoing embodiments of the first aspect of the present invention, the non-display area includes a plurality of the second openings, and the plurality of second openings are arranged along the circumferential direction of the display area;

[0032] Preferably, the plurality of second openings are evenly arranged in the non-display area;

[0033] Preferably, the area of the orthographic projection of at least a part of the second openings on the substrate is larger than the area of the orthographic projection of the first opening on the substrate;

[0034] Preferably, the extending direction of the portion of the second part between two circumferentially adjacent second openings along the display area intersects with the extending direction of the touch trace, and the positive projection of the portion of the second part between two circumferentially adjacent second openings along the display area on the substrate is a first projection, and the first projection partially overlaps with the positive projection of the touch trace on the substrate;

[0035] Preferably, the touch trace includes a first section extending in a first direction, the positive projection of some of the second openings on the substrate is rectangular, and the dimensions of some of the second openings among the plurality of second openings along the first direction are the same.

[0036] According to any of the foregoing embodiments of the first aspect of the present invention, the non-display area further includes a leveling area located on the side of the second part away from the display area, the display panel further includes a packaging layer, the packaging layer is located on the side of the shielding layer and the light-emitting unit away from the substrate and between the substrate and the conductive layer, and in the direction perpendicular to the plane of the substrate, the thickness of the portion of the packaging layer in the leveling area is less than the thickness of the portion in the display area and less than the thickness of the portion between the leveling area and the display area;

[0037] Preferably, the packaging layer contacts the side surface of the isolation structure facing the second opening;

[0038] Preferably, the shielding layer includes a first sub-portion located in the second opening and a second sub-portion located on the side of the second part away from the substrate, and the packaging layer contacts the side of the second sub-portion away from the substrate;

[0039] Preferably, the packaging layer contacts the side surface of the isolation structure away from the second opening;

[0040] Preferably, the dimension of the leveling area in the direction from the display area to the non-display area is greater than 50 microns.

[0041] According to any of the foregoing embodiments of the first aspect of the present invention, the isolation structure includes a first isolation portion and a second isolation portion, the second isolation portion is located on the side of the first isolation portion away from the substrate, and the positive projection of the second isolation portion on the substrate covers the positive projection of the first isolation portion on the substrate;

[0042] Preferably, it further includes a pixel definition layer, the portion of the pixel definition layer located in the display area is formed on the side of the first electrode away from the substrate, the portion of the pixel definition layer located in the non-display area contacts the substrate, the pixel definition layer includes a pixel defining portion and a plurality of pixel openings located in the display area, and the pixel openings are arranged opposite to the first openings.

[0043] An embodiment of the second aspect of the present application further provides a display device, comprising any display panel provided by the first aspect of the present application.

[0044] An embodiment of the third aspect of the present application further provides a method for preparing a display panel, wherein the display panel comprises a display area and a non-display area disposed around at least a portion of the display area, the preparation method comprising:

[0045] providing a substrate and a circuit structure in the substrate;

[0046] An isolation structure is formed on one side of the substrate, the isolation structure comprising a first portion located in the display area and a second portion located in the non-display area, the first portion encloses a first opening, and the second portion encloses a second opening;

[0047] forming a light-emitting unit in the first opening;

[0048] forming a shielding layer on a side of the isolation structure facing away from the substrate, wherein at least a portion of the shielding layer is formed in the second opening and is electrically connected to the second portion;

[0049] A conductive layer is formed on a side of the shielding layer, the light emitting unit and the isolation structure away from the substrate.

[0050] The display panel provided in the present application includes a display area and a non-display area. The display panel includes a substrate, an isolation structure, a light-emitting unit, a shielding layer and a conductive layer. The isolation structure is formed on one side of the substrate, including a first part located in the display area and a second part located in the non-display area. The first part is enclosed to form a first opening, and the second part is enclosed to form a second opening. The first opening is used to accommodate the light-emitting unit, and the first opening can prevent the isolation structure from blocking the light of the light-emitting unit. The shielding layer is at least partially formed in the second opening and is electrically connected to the second part. Thereby, the second part in the non-display area and the shielding layer can form a continuous film layer to achieve mutual shielding between the part of the conductive layer located in the non-display area and the signal line in the non-display area of ​​the substrate, reduce the mutual interference between the part of the conductive layer located in the non-display area and the signal in the signal line in the substrate, so as to improve the yield of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 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.

[0052] Figure 1It is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0053] Figure 2 is Figure 1 a cross-sectional view along P-P' in

[0054] Figure 3 It is a schematic structural diagram of a conductive layer of a display panel provided by an embodiment of the present application;

[0055] Figure 4 is Figure 1 another cross-sectional view along P-P' in

[0056] Figure 5 It is a schematic structural diagram of a second opening in an isolation structure of a display panel provided by an embodiment of the present application;

[0057] Figure 6 is Figure 5 an enlarged view of the Q region in

[0058] Figure 7 It is a schematic structural diagram of a second opening in an isolation structure of another display panel provided by an embodiment of the present application;

[0059] Figure 8 is Figure 7 an enlarged view of the M region in

[0060] Figure 9 It is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0061] Figure 10 It is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present application.

[0062] In the drawings:

[0063] 1 - Display panel; AA - Display area; NA - Non - display area; 11 - Substrate; 111 - Signal line; 12 - Isolation structure; 121 - First part; 1211 - First opening; 122 - Second part; 1221 - Second opening; 123 - First isolation portion; 124 - Second isolation portion; 13 - Light - emitting unit; 131 - First electrode; 132 - Light - emitting functional layer; 1320 - Light - emitting material layer; 1321 - First sub - part; 1322 - Second sub - part; 133 - Second electrode; 14 - Shielding layer; 141 - First sub - portion; 142 - Second sub - portion; 15 - Conductive layer; 151 - Touch - control trace; 1510 - Trace partition; 152 - Touch - control electrode; 1521 - First touch - control electrode; 1522 - Second touch - control electrode; 153 - Connection line; 1531 - First connection line; 1532 - Second connection line; NA1 - Levelling area; NA2 - Blocking area; 18 - Dam; 16 - Encapsulation layer; 161 - First encapsulation layer; 162 - Second encapsulation layer; 163 - Third encapsulation layer; 17 - Pixel definition layer; 171 - Pixel defining portion; 172 - Pixel opening; 2 - Display device. Detailed implementation manners

[0064] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0065] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non - exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0066] The inventors have found through research that the reason for the problem of mutual interference between signals easily occurring at the border of a display device is as follows: in the existing display panel, there is no metal layer as a shielding barrier between the touch traces of the touch layer and the signal lines in the substrate in the non-display area, so that interference is likely to occur between the touch traces of the touch layer and the signal lines in the substrate in the non-display area. Based on the research of the above problems, the inventors provide a display panel, a manufacturing method thereof and a display device to reduce the signal interference problem in the non-display area.

[0067] For a better understanding of the present application, the following will Figures 1 to 10 describe in detail the display panel, the manufacturing method thereof and the display device according to the embodiments of the present application.

[0068] Please refer to Figure 1 and Figure 2 , the embodiments of the present application provide a display panel 1, which includes a display area AA and a non-display area NA disposed around at least a part of the display area AA. The display panel 1 includes a substrate 11, a light-emitting unit 13, a shielding structure and a conductive layer 15.

[0069] The light-emitting unit 13 is formed on one side of the substrate 11 and located within the display area AA, and the conductive layer 15 is formed on the side of the light-emitting unit 13 facing away from the substrate 11. The shielding structure is disposed between the conductive layer 15 and the substrate 11 and at least partially located within the non-display area NA, and the orthographic projection of the shielding structure on the substrate 11 overlaps with the orthographic projection of the conductive layer 15 on the substrate 11.

[0070] The display panel 1 provided by the present application includes a display area AA and a non-display area NA. The display area AA is the area in the display panel 1 for realizing the display function, and the non-display area NA is disposed around the periphery of the display area AA. The non-display area NA can be used to arrange structures such as driving chips and driving circuits.

[0071] The display panel 1 includes a substrate 11, and film layers or device structures such as the light-emitting unit 13, the shielding structure and the conductive layer 15 are formed on the same side of the substrate 11. Among them, the substrate 11 may include a plurality of film layer structures stacked. For the specific film layer composition manner in the substrate 11, the embodiments of the present application do not make limitations. For example, the substrate 11 may be provided with a plurality of conductor layers and semiconductor layers, and insulating layers located between adjacent conductor layers and semiconductor layers. Conductor structures are provided in the conductor layers, and active structures are provided in the semiconductor layers. Further, the substrate includes a circuit structure. The circuit structure may include a pixel circuit in the display area and a scanning circuit in the non-display area, and may also include other circuit types, which are not limited in the embodiments of the present application.

[0072] A thin film transistor may be provided in the substrate 11. The thin film transistor is used to form a pixel circuit for driving the light-emitting unit 13 to emit light. The thin film transistor includes a conductor structure located in a part of the conductor layer and an active structure located in the semiconductor layer.

[0073] In the related art, some structures in the conductive layer 15 and some conductor structures in the substrate 11, such as the signal line 111, are oppositely arranged in the non-display area NA, which may easily cause interference between the two. In view of this, in the embodiment of the present application, a shielding structure is added in the display panel 1. The shielding structure is provided between the conductive layer 15 and the substrate 11 and at least partially located in the non-display area NA. The existence of the shielding structure can shield the signal between some structures of the conductive layer 15 located in the non-display area NA and the signal line 111 in the substrate 11, reduce the risk of signal interference, thereby protecting the conductor structure in the substrate 11 and the conductive layer 15, and improving the yield and reliability of the display panel 1.

[0074] It should be noted that the specific type of the conductive layer 15 is not limited in the embodiment of the present application. Optionally, the structure in the conductive layer 15 can be used to transmit touch signals, or the structure in the conductive layer 15 can also be used to transmit other signals, as long as it satisfies that the conductive layer 15 is located on the side of the light-emitting unit 13 away from the substrate 11.

[0075] In some embodiments, the shielding structure includes an isolation structure 12 formed on one side of the substrate. The isolation structure 12 includes a first part 121 located in the display area AA and a second part 122 located in the non-display area NA. The first part 121 encloses a first opening 1211, and the light-emitting unit 13 is located in the first opening 1211. The second part 122 is overlapped with the orthographic projection of the conductive layer 15 on the substrate 11.

[0076] The isolation structure 12 is formed on one side of the substrate 11 and includes a first part 121 located in the display area AA and a second part 122 located in the non-display area NA. The first part 121 encloses a first opening 1211, and the second part 122 encloses a second opening 1221. The first opening 1211 is used to accommodate the light-emitting unit 13, and the first opening 1211 can prevent the isolation structure 12 from blocking the light emitted by the light-emitting unit 13.

[0077] In an embodiment of the present application, the second part 122 in the isolation structure 12 is located in the non-display area NA, and the orthographic projection of the second part 122 on the substrate 11 overlaps with the orthographic projection of the conductive layer 15 on the substrate 11. Under this design, the presence of the second part 122 can achieve mutual shielding between the part of the conductive layer 15 located in the non-display area NA and the signal line 111 in the substrate 11 located in the non-display area NA, reducing the mutual interference between the signal in the part of the conductive layer 15 located in the non-display area NA and the signal line 111, so as to improve the use reliability of the display panel 1.

[0078] Further optionally, in the non-display area NA, the orthographic projection of the second part 122 on the substrate 11 completely covers the orthographic projection of the conductive layer 15 on the substrate 11.

[0079] In an embodiment of the present application, the size and shape of the second part 122 depend on the structure of the part of the conductive layer 15 located in the non-display area NA. By adjusting the size and shape of the second part 122, its orthographic projection on the substrate 11 completely covers the orthographic projection of the conductive layer 15 on the substrate 11, so as to improve the shielding effect of the second part 122 between the part of the conductive layer 15 located in the non-display area NA and the signal line 111 in the substrate 11 located in the non-display area NA.

[0080] Optionally, the first part and the second part of the isolation structure may not be completely the same. It is only necessary that at least part of the film layer materials of the first part and the second part are the same and are prepared in the same layer. For example, if the isolation structure includes a first layer and a second layer arranged in a stacked manner, it may only be necessary to set the first layer or the second layer of the first part and the second part to be the same. In this way, the preparation process can be simplified, and the preparation of the shielding structure can be completed using the existing process.

[0081] Of course, the first part and the second part can also be set to have exactly the same film layer structure, and the present application does not make specific limitations on this.

[0082] The second part can be a whole-surface structure in the non-display area and is arranged around the display area, so that a shielding structure can be formed around the display area to avoid mutual interference between the conductive layer and the circuit structure.

[0083] The meaning that the second part is a whole-surface structure is that at least part of the film layer structure does not have a second opening in the non-display area.

[0084] In some embodiments, the light-emitting unit 13 may include a first electrode 131, a light-emitting functional layer 132, and a second electrode 133 arranged in a stacked manner along the direction away from the substrate 11. The shielding structure includes a shielding layer 14, and the shielding layer 14 is prepared in the same layer as the second electrode 133.

[0085] The shielding layer 14 is fabricated on the same layer as the second electrode 133, that is, the shielding layer 14 and the second electrode 133 are located in the same film layer. Further, the two can be fabricated together in the same process so that they can include the same conductive material inside.

[0086] In other embodiments, the shielding layer 14 is fabricated on the same layer as the first electrode 131, that is, the shielding layer 14 and the first electrode 131 are located in the same film layer. Further, the two can be fabricated together in the same process so that they can include the same conductive material inside.

[0087] The second electrode 133 is located within the display area AA, and it is used together with the first electrode 131 to drive the light-emitting functional layer 132 to achieve the light-emitting function, meeting the display requirements of the display panel 1. The shielding layer 14 is fabricated on the same layer as the second electrode 133, and the shielding layer 14 is disposed in the non-display area NA. The presence of the shielding layer 14 can achieve mutual shielding between the part of the conductive layer 15 located in the non-display area NA and the signal line 111 located in the non-display area NA within the substrate 11, reducing the mutual interference of signals between the part of the conductive layer 15 located in the non-display area NA and some conductor structures within the substrate 11, so as to improve the use reliability of the display panel 1.

[0088] In some alternative embodiments, the orthographic projection of the shielding layer 14 on the substrate 11 and the orthographic projection of the conductive layer 15 on the substrate 11 are overlapped. Further optionally, within the non-display area NA, the orthographic projection of the shielding layer 14 on the substrate 11 completely covers the orthographic projection of the conductive layer 15 on the substrate 11.

[0089] In the embodiments of the present application, the size and shape of the shielding layer 14 depend on the partial structure of the conductive layer 15 located in the non-display area NA. By adjusting the size and shape of the shielding layer 14, its orthographic projection on the substrate 11 completely covers the orthographic projection of the conductive layer 15 on the substrate 11, thereby improving the shielding effect of the shielding layer 14 on the part of the conductive layer 15 located in the non-display area NA and the signal line 111 located in the non-display area NA within the substrate 11.

[0090] In some embodiments, the shielding structure includes an isolation structure 12 formed on one side of the substrate 11 and a shielding layer 14. The isolation structure 12 includes a first part 121 located in the display area AA and a second part 122 located in the non-display area NA. The first part 121 encloses a first opening 1211, and the second part 122 encloses a second opening 1221. The light-emitting unit 13 is located within the first opening 1211, and the shielding layer 14 includes a first sub-part 141 located within the second opening 1221, and the first sub-part 141 is electrically connected to the second opening 1221.

[0091] The isolation structure 12 includes a first portion 121 located in the first part AA of the display area and a second portion 122 located in the non-display area NA. The first portion 121 and the second portion 122 respectively enclose a first opening 1211 and a second opening 1221. At least one light-emitting unit 13 may be formed in each first opening 1211, and the second electrode 133 of the light-emitting unit 13 may be electrically connected to the first portion 121 to achieve synchronous power supply to the second electrode 133.

[0092] The shielding layer 14 is at least partially formed in the second opening 1221 and is electrically connected to the second portion 122. Thus, the second portion 122 in the non-display area NA and the shielding layer 14 can form a continuous film layer, so as to achieve mutual shielding between the portion of the conductive layer 15 located in the non-display area NA and the signal line 111 in the non-display area NA of the substrate 11, reduce the mutual interference of signals between the portion of the conductive layer 15 located in the non-display area NA and the signal line 111 in the substrate 11, and improve the yield of the display panel 1.

[0093] At the same time, the second portion 122 in the non-display area NA encloses the second opening 1221, and at least a part of the shielding layer 14 is located in the second opening 1221, which can realize the alternating arrangement of the shielding layer 14 and the isolation structure 12 along the direction parallel to the substrate 11, reduce the problem that large-area metal is prone to peeling after contacting the underlying film layer, and prevent static electricity from occurring to protect the signal line 111 in the substrate 11. Static electricity can cause the signal line 111 in the substrate 11 to turn black, be punctured, be broken, etc., resulting in open circuit and short circuit problems.

[0094] Furthermore, the first portion 121 and the second portion 122 in the isolation structure 12 can be connected to achieve synchronous power supply to the first portion 121 and the second portion 122. By supplying direct current to the isolation structure 12, synchronous power supply to the second portion 122 and the shielding layer 14, and synchronous power supply to the first portion 121 and the second electrode 133 can be realized. Passing direct current through the second portion 122 and the shielding layer 14 can achieve a good shielding effect.

[0095] Specifically, the first portion 121 and the second portion 122 can be synchronously patterned to form a mesh structure, and the first portion 121 and the second portion 122 can be an integral structure.

[0096] Specifically, the positive projection of the first sub-portion 141 on the second opening 1221 can cover the second opening 1221, so that the position between the second openings 1221 can be shielded by the second portion 122, and the position in the second opening 1221 can be shielded by the first sub-portion 141 to achieve a closed shielding effect.

[0097] In addition, in some embodiments, in addition to the first sub-portion 141, the shielding layer 14 further includes a second sub-portion 142 located on the side of the second portion 122 away from the substrate 11. That is, during the preparation process of the shielding layer 14, part of the material will fall into the second opening 1221 to form the first sub-portion 141, and part of the material will fall on the side of the second portion 122 away from the substrate 11 to form the second sub-portion 142.

[0098] In a feasible implementation manner, as Figure 4 shown, the light-emitting unit 13 includes a first electrode 131, a light-emitting functional layer 132, and a second electrode 133 stacked in the direction away from the substrate 11, and the shielding layer 14 is prepared on the same layer as the second electrode 133.

[0099] In the above implementation manner, the shielding layer 14 can be prepared simultaneously with the preparation of the second electrode 133, that is, the second electrode 133 and the shielding layer 14 are prepared from the same material and by the same process, so that the preparation process of the display panel 1 can be simplified without increasing the preparation process, and the preparation cost can be saved. During the preparation process of the shielding layer 14, a first sub-portion 141 located in the second opening 1221 and a second sub-portion 142 located on the side of the second branch 1322 away from the second portion 122 can be formed. The first sub-portion 141 is electrically connected to the second portion 122 and the first sub-portion 141 covers the second opening 1221, so that a closed whole layer is formed through the second portion 122 and the first sub-portion 141 to improve the shielding effect.

[0100] In a feasible implementation manner, as Figure 2 shown, it further includes a light-emitting material layer 1320. The light-emitting material layer 1320 is provided on the same layer as at least part of the light-emitting functional layer 132. The light-emitting material layer 1320 includes a first branch 1321 located in the second opening 1221 and a second branch 1322 located on the side of the second portion 122 away from the substrate 11.

[0101] In the above implementation manner, the light-emitting material layer 1320 is provided on the same layer as the light-emitting functional layer 132 and can be prepared by the same preparation process. The light-emitting material layer 1320 includes a first branch 1321 located in the second opening 1221 and a second branch 1322 located on the side of the second portion 122 away from the substrate 11.

[0102] In a feasible implementation manner, as Figure 2 and Figure 4As shown, the non-display area NA further includes a leveling area NA1, which is located on the side of the second part 122 away from the display area AA. The display panel 1 further includes a packaging layer 16, which is located on the side of the shielding layer 14 and the light-emitting unit 13 away from the substrate 11 and between the substrate 11 and the conductive layer 15. Along the direction perpendicular to the plane where the substrate 11 is located, the thickness of the part of the packaging layer 16 in the leveling area NA1 is less than the thickness of the part in the display area AA and less than the thickness of the part between the leveling area NA1 and the display area AA.

[0103] In the above embodiment, the display panel 1 further includes a packaging layer 16, which is located between the light-emitting unit 13 and the conductive layer 15 and between the shielding layer 14 and the conductive layer 15. The packaging layer 16 may include a first packaging layer 161, a second packaging layer 162, and a third packaging layer 163 stacked in the direction away from the substrate 11. The materials of the first packaging layer 161 and the third packaging layer 163 may be inorganic materials, and the ability of inorganic materials to isolate water and oxygen is relatively strong. The material of the second packaging layer 162 may be an organic material, and the fluidity of the organic material is relatively strong.

[0104] As Figure 4 shown, the direction of the non-display area NA away from the display area AA further includes a leveling area NA1 for leveling the second packaging layer 162. The non-display area NA may further include a blocking area NA2 located on the side of the leveling area NA1 away from the display area AA. The blocking area NA2 includes a dam 18 for blocking the second packaging layer 162.

[0105] Specifically, the size D of the leveling area NA1 in the direction from the display area AA to the non-display area NA is greater than 50 micrometers, so as to provide sufficient space for the leveling of the second packaging layer 162 and improve the flatness of the side of the second packaging layer 162 away from the substrate 11.

[0106] In the above-described embodiments, the thickness of the encapsulation layer 16 may gradually decrease from the display area AA towards the leveling area NA1. Here, the thickness refers to the dimension along the direction perpendicular to the plane of the substrate 11, i.e., along the thickness direction of the substrate 11. The portion of the encapsulation layer 16 above the second portion 122 also gradually thins from the display area AA towards the leveling area NA1. In particular, the encapsulation layer 16 above the second portion 122 at a position far from the display area AA thins more significantly. At this time, by forming the second sub-portion 1322 of the light-emitting material layer 1320 and the second sub-portion 142 of the shielding layer 14 on the side of the second portion 122 facing away from the substrate 11, the first encapsulation layer 161 can be continuously provided on the side of the second portion 122 facing away from the substrate, and the encapsulation layer 16 can contact the side surface of the isolation structure 12 away from the second opening 1221, thereby wrapping the surface of the second portion 122 facing away from the substrate 11 to achieve encapsulation, reducing the probability of exposure after the encapsulation of the second portion 122 fails, preventing the problem of shielding failure of the second portion 122, and enhancing the reliability of the shielding effect of the second portion 122.

[0107] In a feasible embodiment, the encapsulation layer 16 contacts the side surface of the isolation structure 12 facing the second opening 1221; thus, while covering the first sub-portion 141, the encapsulation layer 16 overlaps with the isolation structure 12 to form a good encapsulation effect.

[0108] In a feasible embodiment, the shielding layer 14 includes a first sub-portion 141 located within the second opening 1221 and a second sub-portion 142 located on the side of the second portion 122 facing away from the substrate 11. The encapsulation layer 16 contacts the side of the second sub-portion 142 facing away from the substrate; thus, the encapsulation layer 16 can be prevented from being suspended, improving the probability of water and oxygen entering between the encapsulation layer 16 and the underlying film layer from the suspended position, thereby enhancing the encapsulation yield, further improving the shielding effect, and reducing the probability of shielding failure after the first sub-portion 141 is eroded by water and oxygen.

[0109] In a feasible embodiment, the conductive layer 15 includes a touch layer. The touch layer includes touch traces 151 located in the non-display area NA. The orthographic projection of the touch traces 151 on the substrate 11 is located within the orthographic projection of the shielding layer 14 on the substrate 11, and / or within the orthographic projection of the isolation structure 12 on the substrate 11.

[0110] In the above embodiments, the conductive layer 15 may include a touch layer to implement a touch function, or may further include other film layers, which is not particularly limited in this application. The touch layer includes touch traces 151 located in the non-display area NA. The shielding layer 14 contacts the second portion 122 to form a continuous shielding surface. The orthographic projection of the touch traces 151 on the substrate 11 is located within the orthographic projection of the shielding layer 14 on the substrate 11, and / or within the orthographic projection of the isolation structure 12 on the substrate 11, so as to shield the touch traces 151 and the film layers with conductive properties in the substrate 11.

[0111] Specifically, as Figure 3 shown, the touch layer further includes touch electrodes 152 and connection lines 153 located in the display area AA. The touch electrodes 152 may include a first touch electrode 1521 and a second touch electrode 1522. The connection lines 153 may include a first connection line 1531 and a second connection line 1532. The touch layer may include a first conductive layer and a second conductive layer stacked in a direction away from the substrate 11, and the first conductive layer and the second conductive layer are insulated from each other; the first conductive layer includes the first connection line 1531, the second conductive layer includes the touch electrodes 152 and the second connection line 1532. The first touch electrodes 1521 are arranged in rows and columns, and at least some of the adjacent first touch electrodes 1521 in the column direction are electrically connected through the first connection line 1531. The second touch electrodes 1522 are arranged in rows and columns, and at least some of the adjacent second touch electrodes 1522 in the row direction are electrically connected through the second connection line 1532. The connection lines 153 and / or the touch electrodes 152 are directly connected to the touch traces 151.

[0112] In a feasible embodiment, the substrate 11 includes a metal layer. The metal layer includes metal traces located in the non-display area NA. The metal traces include signal lines 111, which are different from the signals in the touch traces 151. The orthographic projection of the touch traces 151 on the metal layer overlaps at least partially with the metal traces. Interference is more likely to occur at the overlapping portion. Through the shielding layer 14 and the isolation structure 12, the signals in the touch traces 151 and the metal traces can be shielded, reducing interference, thereby improving the performance of the display panel 1.

[0113] In a feasible embodiment, as Figure 5 shown, the non-display area NA includes at least one second opening 1221, and the second opening 1221 surrounds the display area AA.

[0114] Specifically, the non-display area NA may include only one second opening 1221, and the second opening 1221 surrounds the display area AA; or, the non-display area NA includes a plurality of second openings 1221, each second opening 1221 surrounds the display area AA, and the plurality of second openings 1221 are nested in sequence (not shown in the figure).

[0115] The second opening 1221 is disposed around the display area AA, so that the area of the second opening 1221 can be increased to ensure the flatness of the film layer under the touch trace 151 and reduce the risk of breakage of the touch trace 151.

[0116] In a feasible implementation, as Figure 5 and Figure 6 shown, the touch trace 151 includes a trace partition 1510 extending along a partial area in the display area AA, and the orthographic projection of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second opening 1221 on the substrate 11.

[0117] Specifically, the edge of the display area AA may be rectangular, and the trace partition 1510 may include a part extending along the row direction in the arrangement direction of the touch electrodes 152 and a part extending along the column direction, and the row direction and the column direction are respectively parallel to two sides of the rectangle.

[0118] The trace partition 1510 extends around a partial area in the display area AA, that is, the extending direction of the trace partition 1510 is the same as that of the second opening 1221, so that the orthographic projection of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second opening 1221 on the substrate 11. A first sub - part 141 of the shielding layer 14 is provided in the second opening 1221, and the first sub - part 141 can shield the trace partition 1510 from the signal lines 111 in the substrate 11. At the same time, the trace partition 1510 does not pass through the edge of the second opening 1221, so that the flatness of the film layer under the trace partition 1510 is better, reducing the risk of short - circuit and open - circuit of the touch trace 151 and improving the reliability and dependability of the touch trace 151. At the same time, the film layers under the trace partitions 1510 are the same, improving the difference between different trace partitions 1510 and helping to improve the transmission quality of touch signals.

[0119] Specifically, the orthographic projection of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the shielding layer 14 on the substrate 11. Specifically, the orthographic projection of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the first sub - part 141 on the substrate 11. Thus, the trace partition 1510 does not pass above the edge of the isolation structure 12, only passing above the first sub - part 141, making the flatness of the film layer under the trace partition 1510 better, and the first sub - part 141 can achieve a good shielding effect.

[0120] In a feasible implementation, as Figure 2As shown, the touch trace 151 includes a trace partition 1510 extending along a partial area around the display area AA. The orthographic projection of a part of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second opening 1221 on the substrate 11, and the orthographic projection of a part of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second part 122 on the substrate 11. The edge of the orthographic projection of the second part 122 on the substrate 11 has no overlap with the orthographic projection of the trace partition 1510 on the substrate 11.

[0121] In the above embodiment, the orthographic projection of a part of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second opening 1221 on the substrate 11, and the orthographic projection of a part of the trace partition 1510 on the substrate 11 is located within the orthographic projection of the second part 122 on the substrate 11, that is, a part of the trace partition 1510 is located above the second opening 1221 and a part of the trace partition 1510 is located above the second part 122, which can ensure the flatness of the film layer below the trace partition 1510. It only needs to ensure that the trace partition 1510 is not located above the edge of the second part 122, that is, the edge of the second opening 1221. The edge of the second part 122 is the transition area between the second part 122 and the second opening 1221, which has a step difference and is not conducive to ensuring flatness.

[0122] In a feasible embodiment, as Figure 7 and Figure 8 shown, the non-display area NA includes a plurality of second openings 1221, and the plurality of second openings 1221 are arranged along the circumferential direction of the display area AA. The touch trace 151 includes a first segment extending in the first direction. The orthographic projections of some of the plurality of second openings 1221 on the substrate 11 are rectangular, and the dimensions of some of the second openings 1221 along the first direction are the same. Thereby, the width of the second part 122 between the second openings 1221 passed by each first segment can be ensured to be relatively consistent, which helps to ensure the consistency of the film layer below the touch trace 151, reduce the difference between different touch traces 151, and thus ensure the touch quality.

[0123] In the above embodiment, the edge of the display area AA can be rectangular, including a long side and a short side, and the first direction can be parallel to the long side direction.

[0124] In the above embodiment, the plurality of second openings 1221 are uniformly arranged in the non-display area NA, thereby reducing the difference between the first ends.

[0125] In the above embodiment, the area of the orthographic projection of at least some of the second openings 1221 on the substrate 11 is larger than the area of the orthographic projection of the first opening 1211 on the substrate 11; by setting the area of the second opening 1221 to be larger, the flatness of the film layer below the touch trace 151 can be improved, so as to improve the yield of the touch trace 151.

[0126] It should be noted that the first opening 1211 is used to accommodate the light-emitting unit 13, and for light-emitting units 13 of different colors, the orthographic projection areas of the first openings 1211 corresponding to the light-emitting units 13 of different colors on the substrate 11 can be the same or different. The orthographic projection area of ​​at least some of the second openings 1221 on the substrate 11 needs to be larger than the orthographic projection area of ​​the largest first opening 1211 on the substrate 11, so as to improve the flatness of the film layer below the touch wiring 151.

[0127] In the above embodiment, the extension direction of the portion of the second portion 122 between the two second openings 1221 adjacent to each other along the circumference of the display area AA intersects with the extension direction of the touch line 151, and the orthographic projection of the portion of the second portion 122 between the two second openings 1221 adjacent to each other along the circumference of the display area AA on the substrate 11 is the first projection, and the first projection partially overlaps with the orthographic projection of the touch line 151 on the substrate 11. That is, a touch line 151 passes over a plurality of second openings 1221 along its length direction.

[0128] In a possible implementation, Figure 2 and Figure 4 As shown, the isolation structure 12 includes a first isolation portion 123 and a second isolation portion 124 , the second isolation portion 124 is located on a side of the first isolation portion 123 away from the substrate 11 , and the orthographic projection of the second isolation portion 124 on the substrate 11 covers the orthographic projection of the first isolation portion 123 on the substrate 11 .

[0129] In the above embodiment, the first portion 121 and the second portion 122 of the isolation portion may include a first isolation portion 123 and a second isolation portion 124 .

[0130] In the above embodiment, a step portion is formed between the first isolating portion 123 and the second isolating portion 124, which can be used to isolate the light-emitting functional layer 132 and the second electrode 133 in the display area AA, so as to realize the independence of the light-emitting functional layers 132 in adjacent light-emitting units 13, and the independence of the second electrodes 133 in adjacent light-emitting units 13. The light-emitting material layer 1320 prepared on the same layer as the light-emitting functional layer 132 can be formed at the same time as the light-emitting functional layer 132 is formed, instead of isolating the light-emitting material layer 1320 and the shielding layer 14 in the display area NA.

[0131] In the above-described embodiment, the second electrodes 133 are independent of each other, making it difficult to supply power to each second electrode 133. At least some of the second electrodes 133 are electrically connected through the first portion 121 of the isolation structure 12 and then synchronously powered, thereby achieving synchronous power supply to each of the second electrodes 133, simplifying the number of power supply lines and the manufacturing process. At the same time, since the material of the second electrode 133 is often selected as a magnesium-silver alloy, and the material of the isolation structure 12 includes aluminum, which has a smaller resistance than the magnesium-silver alloy, the resistance of the connection of the isolation structure 12 and the second electrode 133 is lower than that of the traditional second electrode 133 with a whole surface, which can reduce the power consumption of the display panel 1, and thus can reduce the difference caused by the attenuation (IR-DROP) during the signal transmission between the near driving end and the principle driving end due to the large resistance, which helps to improve the uniformity of the panel display.

[0132] In the above-described embodiment, after the shielding layer 14 is partitioned by the second portion 122, a first sub-portion 141 located within the second opening 1221 and a second sub-portion 142 located on the side of the second sub-division 1322 away from the second portion 122 are formed. The electrical connection of the second portion 122 and the second sub-portion 142 can achieve the electrical connection of multiple second sub-portions 142, thereby facilitating the synchronous power supply of the second portion 122 and the second sub-portion 142 to form a closed film layer and achieve the shielding function.

[0133] In a feasible embodiment, as Figure 2 and Figure 4 shown, it further includes a pixel definition layer 17. The portion of the pixel definition layer 17 located in the display area AA is formed on the side of the first electrode 131 away from the substrate 11, and the portion of the pixel definition layer 17 located in the non-display area NA is in contact with the substrate 11. The pixel definition layer 17 includes a pixel defining portion 171 and a plurality of pixel openings 172 located in the display area AA, and the pixel openings 172 are disposed opposite to the first opening 1211.

[0134] In the above-described embodiment, the portion of the pixel definition layer 17 located in the display area AA covers the edge of the first electrode 131, thereby protecting the first electrode 131 and achieving mutual insulation between adjacent first electrodes 131, reducing the interference between adjacent first electrodes 131. The portion of the pixel definition layer 17 located in the display area AA includes at least a first pixel opening 172, a second pixel opening 172, and a third pixel opening 172. Specifically, when the display panel 1 includes light-emitting units 13 of three colors, the first pixel opening 172 is used to form a red light-emitting unit 13, the second pixel opening 172 is used to form a green light-emitting unit 13, and the third pixel opening 172 is used to form a blue light-emitting unit 13. When the display panel 1 further includes a white light-emitting unit 13, the pixel definition layer 17 may further include a fourth pixel opening 172 for forming a white light-emitting unit 13.

[0135] The portion of the pixel definition layer 17 located in the non-display area NA is in contact with the substrate 11, thereby providing a flat surface for subsequent film layers, facilitating the improvement of the reliability of the touch traces 151, and reducing the occurrence of open circuit and short circuit defects.

[0136] When the display panel 1 includes the isolation structure 12, the light-emitting units 13 of each color can be prepared as a whole layer first and then patterned, thereby omitting the use of a mask plate to reduce costs. The light-emitting units 13 of different colors are prepared in different orders. During the patterning process of the later-prepared light-emitting units 13, isolation can be performed through the isolation structure 12 to improve the yield of the patterning process and reduce the impact of patterning on the yield of the light-emitting units 13. During the preparation process of the light-emitting units 13 of the last color, the portions of the light-emitting functional layer 132 and the second electrode 133 located in the non-display area NA can be retained to form the light-emitting material layer 1320 and the shielding layer 14. Thus, the light-emitting material layer 1320 and the shielding layer 14 can be prepared on the basis of the original preparation process without adding new materials for the new preparation process, saving the preparation cost.

[0137] The present application also provides a display device 2, as Figure 9 shown, including any one of the display panels 1 provided in the above embodiments of the present application. In the display device 2, a good shielding effect can be achieved between the touch traces 151 and the signal lines in the substrate 11 located in the non-display area NA, reducing the interference between the two and improving the yield of the display device 2.

[0138] The display device 2 can be a mobile terminal such as a mobile phone or a notebook computer, or a fixed terminal such as a television or a computer monitor, or can also be a wearable device such as a watch, etc., and the present application does not make a special limitation.

[0139] The present application also provides a method for manufacturing a display panel. The display panel includes a display area and a non-display area disposed around at least a part of the display area, as Figure 10 shown. The manufacturing method includes:

[0140] S100, providing a substrate 11.

[0141] S200, forming an isolation structure 12 on one side of the substrate 11. The isolation structure 12 includes a first part 121 located in the display area AA and a second part 122 located in the non-display area NAAA. The first part 121 encloses a first opening 1211, and the second part 122 encloses a second opening 1221.

[0142] S300, forming a light-emitting unit 13 in the first opening.

[0143] S400. A shielding layer 14 is formed on the side of the isolation structure 12 away from the substrate 11, and at least a part of the shielding layer 14 is formed in the second opening 1221 and electrically connected to the second part 122.

[0144] S500. A conductive layer is formed on the sides of the shielding layer 14, the light-emitting unit 13, and the isolation structure 12 away from the substrate 11.

[0145] In the display panel prepared by using the preparation method provided in the present application, the second part 122 located in the non-display area NA in the isolation structure and the shielding layer 14 can form a continuous film layer, so as to realize the mutual shielding between the part of the conductive layer 15 located in the non-display area NA and the signal line 111 in the non-display area NA of the substrate 11, reduce the mutual interference between the signals in the part of the conductive layer 15 located in the non-display area NA and the signal line 111 in the substrate 11, and improve the yield of the display panel 1. Thereby, the user experience can be further improved.

[0146] According to the embodiments of the present application as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the above description. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present application, so that those skilled in the art can make good use of the present application and its 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: The display panel comprises a display area and a non-display area disposed around at least a portion of the display area; the display panel comprises: a substrate including a circuit structure; A light emitting unit, formed on one side of the substrate and located in the display area; A conductive layer formed on a side of the light emitting unit away from the substrate; A shielding structure is disposed between the conductive layer and the circuit structure of the substrate and is at least partially located in the non-display area, wherein the orthographic projection of the shielding structure on the substrate covers the orthographic projection of the conductive layer on the substrate.

2. The display panel according to claim 1, characterized in that: The shielding structure includes an isolation structure formed on one side of the substrate, the isolation structure includes a first portion located in the display area and a second portion located in the non-display area, the first portion encloses a first opening, and the light emitting unit is located in the first opening; The orthographic projection of the second portion on the substrate overlaps with the orthographic projection of the conductive layer on the substrate; Preferably, in the non-display area, the orthographic projection of the second portion on the substrate completely covers the orthographic projection of the conductive layer on the substrate; Preferably, at least part of the membrane layer of the first part and the second part is made of the same material and is prepared in the same layer; Preferably, the second part is arranged around the display area in the non-display area; Preferably, no second opening is provided on the second portion.

3. The display panel according to claim 1, characterized in that: The light-emitting unit comprises a first electrode, a light-emitting functional layer, and a second electrode stacked in a direction away from the substrate, and the shielding structure comprises a shielding layer, and the shielding layer is prepared in the same layer as the second electrode or the first electrode; Preferably, the orthographic projection of the shielding layer on the substrate overlaps with the orthographic projection of the conductive layer on the substrate; Preferably, in the non-display area, the orthographic projection of the shielding layer on the substrate completely covers the orthographic projection of the conductive layer on the substrate.

4. The display panel according to claim 1, characterized in that: The shielding structure includes an isolation structure and a shielding layer formed on one side of the substrate, the isolation structure includes a first portion located in the display area and a second portion located in the non-display area, the first portion encloses a first opening, and the second portion encloses a second opening; The light emitting unit is located in the first opening, the shielding layer includes a first sub-portion located in the second opening, and the first sub-portion is electrically connected to the second opening; Preferably, the shielding layer further comprises a second sub-portion located on a side of the second portion facing away from the substrate; Preferably, the light-emitting unit comprises a first electrode, a light-emitting functional layer and a second electrode stacked in a direction away from the substrate, and the shielding layer is prepared in the same layer as the second electrode or the first electrode; Preferably, it further comprises a luminescent material layer, which is arranged in the same layer as at least part of the luminescent functional layer, and comprises a first section located in the second opening and a second section located on a side of the second section away from the substrate.

5. The display panel according to claim 4, characterized in that: The conductive layer includes a touch layer, the touch layer includes a touch trace located in the non-display area, the orthographic projection of the touch trace on the substrate is located within the orthographic projection of the shielding layer on the substrate, and / or is located within the orthographic projection of the isolation structure on the substrate; Preferably, the substrate comprises a metal layer, the metal layer comprises metal wiring located in the non-display area, and the orthographic projection of the touch wiring on the metal layer at least partially overlaps with the metal wiring.

6. The display panel according to claim 4, characterized in that: The second opening is arranged around the display area.

7. The display panel according to claim 5, characterized in that: The touch control wiring includes a wiring partition extending along and surrounding a portion of the display area, and the orthographic projection of the wiring partition on the substrate is located within the orthographic projection of the second opening on the substrate; Preferably, the orthographic projection of the routing partition on the substrate is located within the orthographic projection of the shielding layer on the substrate.

8. The display panel according to claim 5, characterized in that: The touch routing includes routing partitions extending along and around a portion of the display area, the orthographic projections of some of the routing partitions on the substrate are located within the orthographic projections of the second opening on the substrate, and the orthographic projections of some of the routing partitions on the substrate are located within the orthographic projections of the second portion on the substrate, and the edges of the orthographic projections of the second portion on the substrate do not overlap with the orthographic projections of the routing partitions on the substrate.

9. The display panel according to claim 5, characterized in that: A plurality of the second openings are arranged along the circumference of the display area; Preferably, a plurality of the second openings are evenly arranged in the non-display area; Preferably, an area of ​​an orthographic projection of at least part of the second opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate; Preferably, an extension direction of a portion of the second portion located between two second openings adjacent to each other along the circumference of the display area intersects with an extension direction of the touch line, and an orthographic projection of a portion of the second portion located between two second openings adjacent to each other along the circumference of the display area on the substrate is a first projection, and the first projection partially overlaps with an orthographic projection of the touch line on the substrate; Preferably, the touch control trace comprises a first section extending along a first direction, the orthographic projections of some of the second openings on the substrate are rectangular, and some of the second openings among the plurality of second openings have the same size along the first direction.

10. The display panel according to claim 4, characterized in that: The non-display area further includes a leveling area, which is located on a side of the second portion away from the display area. The display panel further includes an encapsulation layer, which is located on a side of the shielding layer and the light-emitting unit away from the substrate and between the substrate and the conductive layer. In a direction perpendicular to the plane where the substrate is located, the thickness of the portion of the encapsulation layer in the leveling area is smaller than the thickness of the portion in the display area, and smaller than the thickness of the portion between the leveling area and the display area. Preferably, the encapsulation layer contacts a side surface of the isolation structure facing the second opening; Preferably, the shielding layer comprises a first sub-portion located in the second opening and a second sub-portion located on a side of the second portion facing away from the substrate, and the encapsulation layer is in contact with a side of the second sub-portion facing away from the substrate; Preferably, the encapsulation layer contacts a side surface of the isolation structure away from the second opening; Preferably, a dimension of the leveling area along a direction from the display area to the non-display area is greater than 50 micrometers.

11. The display panel according to claim 4, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion, wherein the second isolation portion is located on a side of the first isolation portion away from the substrate, and an orthographic projection of the second isolation portion on the substrate covers an orthographic projection of the first isolation portion on the substrate; Preferably, it also includes a pixel definition layer, wherein a portion of the pixel definition layer located in the display area is formed on the side of the first electrode away from the substrate, and a portion of the pixel definition layer located in the non-display area is in contact with the substrate. The pixel definition layer includes a pixel defining portion and a plurality of pixel openings located in the display area, and the pixel openings are arranged opposite to the first opening.

12. A display device, characterized in that: A display panel comprising any one of claims 1 to 11.

13. A method for preparing a display panel, characterized in that: The display panel includes a display area and a non-display area disposed around at least a portion of the display area, and the preparation method includes: providing a substrate; An isolation structure is formed on one side of the substrate, the isolation structure comprising a first portion located in the display area and a second portion located in the non-display area, the first portion encloses a first opening, and the second portion encloses a second opening; forming a light emitting unit in the first opening; forming a shielding layer on a side of the isolation structure facing away from the substrate, wherein at least a portion of the shielding layer is formed in the second opening and is electrically connected to the second portion; A conductive layer is formed on a side of the shielding layer, the light emitting unit and the isolation structure away from the substrate.

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