Display panel, preparation method of display panel and electronic equipment

Abstract

The embodiment of the invention provides a display panel, a preparation method of the display panel and electronic equipment, and relates to the technical field of display, the display panel comprises a substrate, an isolation structure and a light-emitting unit, the isolation structure is located on the substrate, an isolation opening is defined by the isolation structure, and the light-emitting unit is located on the substrate; the isolation structure comprises a second isolation part and a first isolation part which are sequentially stacked in the direction away from the substrate, the first isolation part comprises a first sub-part and a second sub-part, and the first sub-part is located between the second sub-part and the isolation opening; the distance between the side, away from the second sub-part, of the first sub-part and the substrate is larger than the distance between the second sub-part and the substrate. The light-emitting unit comprises a first electrode, at least part of the first electrode is located in the isolation opening, and the first electrode extends to the side, away from the substrate, of the second isolation part towards the side wall of the isolation opening through the second isolation part. The overlapping impedance of the first electrode and the isolation structure can be reduced, so that the display effect of the display panel can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of display panels.

[0003] However, there are still some problems with the display panel that need to be addressed. Summary of the Invention

[0004] To overcome the technical problems mentioned in the background, embodiments of this application provide a display panel, including:

[0005] substrate;

[0006] An isolation structure is located on a substrate and forms an isolation opening. The isolation structure includes a second isolation portion and a first isolation portion stacked sequentially in a direction away from the substrate. The first isolation portion includes a first sub-part and a second sub-part, and the first sub-part is located between the second sub-part and the isolation opening. In the thickness direction of the substrate, the distance between the side of the first sub-part away from the second sub-part and the substrate is greater than the distance between the second sub-part and the substrate.

[0007] The light-emitting unit includes a first electrode, at least a portion of which is located within an isolation opening, and the first electrode extends through a second isolation portion toward the sidewall of the isolation opening to the side of the second isolation portion away from the substrate.

[0008] In some possible implementations, the distance between the first sub-part and the substrate gradually increases along the thickness direction of the substrate in a direction away from the second sub-part;

[0009] And / or, at least a portion of the first sub-part forms an angle with the surface of the second isolation part away from the substrate;

[0010] Optionally, the angle between at least a portion of the first sub-part and the surface of the second isolation part away from the substrate is greater than or equal to 20° and less than or equal to 40°.

[0011] In some possible implementations, the first electrode extends through the sidewall of the second isolation portion toward the isolation opening to the first gap between the second isolation portion and the first sub-part on the side of the second isolation portion away from the substrate;

[0012] And / or, the distance between the orthographic projection of the side of the first sub-part closer to the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than or equal to 1 μm and less than or equal to 2 μm.

[0013] And / or, corresponding to the same isolation opening, the distance between the orthographic projection of the side of the first sub-part away from the second sub-part on the substrate and the orthographic projection of the boundary line of the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than or equal to 0.5 μm and less than or equal to 2 μm.

[0014] And / or, the distance between the orthographic projection of the side of the first sub-part closer to the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than the distance between the orthographic projection of the side of the first sub-part away from the second sub-part on the substrate and the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate.

[0015] And / or, the orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the surface of the second isolation part away from the substrate on the substrate, and the orthographic projection of the first sub-part on the substrate overlaps with the orthographic projection of the surface of the second isolation part away from the substrate on the substrate.

[0016] And / or, at least a portion of the orthographic projection of the first sub-part onto the substrate lies outside the orthographic projection of the surface of the second isolation portion away from the substrate onto the substrate.

[0017] And / or, the side of the first sub-part closest to the substrate contacts the second isolation part.

[0018] In some possible implementations, the first sub-part includes an edge portion and a connecting portion, the edge portion being located on the side of the connecting portion away from the second sub-part; the connecting portion is connected between the edge portion and the second sub-part, and at least a portion of the orthographic projection of the connecting portion on the substrate overlaps with the orthographic projection of the surface of the second isolation portion away from the substrate on the substrate.

[0019] Optionally, the second sub-part is a flat part and parallel to the substrate, and / or the edge part is a flat part and parallel to the substrate, or the surface where the edge part is located is inclined or bent relative to the surface where the substrate is located, and / or the surface where the connecting part is located is perpendicular, inclined or bent relative to the surface where the substrate is located.

[0020] Optionally, the second isolation portion has a first gap between the side away from the substrate and the first sub-part, and the display panel further includes a first encapsulation layer located on the side of the light-emitting unit away from the substrate. The first encapsulation layer includes a plurality of encapsulation units spaced apart, and the encapsulation units fill the first gap.

[0021] And / or, along the direction away from the second sub-part, the distance between the connecting part and the second isolation part on the side away from the substrate gradually increases along the thickness direction of the substrate; and / or, along the direction away from the second sub-part, the distance between the first sub-part and the substrate gradually increases along the thickness direction of the substrate.

[0022] And / or, a first gap exists between the side of the connecting portion near the substrate and the side of the second isolation portion away from the substrate, and the orthographic projection of the connecting portion on the substrate lies within the orthographic projection of the side of the second isolation portion away from the substrate on the substrate.

[0023] The orthographic projection of the edge portion onto the substrate is located outside the orthographic projection of the second isolation portion onto the substrate on the side away from the substrate;

[0024] Along the arrangement direction of the orthographic projection of the connecting portion on the substrate and the orthographic projection of the edge portion on the substrate, the width of the orthographic projection of the connecting portion on the substrate is greater than or equal to 1 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the edge portion on the substrate is greater than or equal to 0.5 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the connecting portion on the substrate is greater than the width of the orthographic projection of the edge portion on the substrate.

[0025] In some possible implementations, the second isolation portion is a single-layer film; optionally, the thickness of the second isolation portion is greater than the thickness of the first isolation portion; optionally, the second isolation portion includes a conductive material; optionally, the second isolation portion includes a metal; optionally, the second isolation portion includes aluminum metal.

[0026] In some possible implementations, the second isolation portion includes: a first isolation sub-portion and a second isolation sub-portion; the second isolation sub-portion is located between the first isolation sub-portion and the substrate; optionally, the orthographic projection of the first isolation sub-portion on the substrate lies within the orthographic projection of the side of the second isolation sub-portion away from the substrate on the substrate; optionally, the orthographic projection of the first isolation sub-portion on the substrate coincides with the orthographic projection of the side of the second isolation sub-portion away from the substrate on the substrate; optionally, the first isolation sub-portion includes a conductive material; and / or, the second isolation sub-portion includes a conductive material; optionally, the first isolation sub-portion includes a metal; and / or, the second isolation sub-portion includes a metal; optionally, a first gap exists between the side of the second isolation sub-portion away from the substrate and the first sub-portion; optionally, a first electrode extends through the second isolation sub-portion and the sidewall of the first isolation sub-portion toward the isolation opening to the first gap between the side of the first isolation sub-portion away from the substrate and the first sub-portion.

[0027] In some possible implementations, the corrosion resistance of the first isolator is greater than that of the second isolator; and / or, the oxidation resistance of the first isolator is stronger than that of the second isolator; and / or, the conductivity of the first isolator is less than that of the second isolator; optionally, the first isolator comprises molybdenum or titanium; the second isolator comprises aluminum; optionally, the thickness of the first isolator is less than the thickness of the second isolator; optionally, the thickness of the first isolator is less than the thickness of the second isolator; optionally, along the direction perpendicular to the substrate, the thickness of the first isolator is greater than or equal to... and less than or equal to

[0028] In some possible implementations, the corrosion resistance of the first insulator is less than that of the second insulator; and / or, the oxidation resistance of the first insulator is weaker than that of the second insulator; and / or, the conductivity of the first insulator is greater than that of the second insulator; optionally, the first insulator comprises aluminum metal; the second insulator comprises molybdenum metal or titanium metal; optionally, the thickness of the first insulator is greater than the thickness of the second insulator; optionally, the thickness of the first insulator is less than the thickness of the second insulator.

[0029] In some possible implementations, the second isolation portion further includes a third isolation sub-portion; the third isolation sub-portion is located between the second isolation sub-portion and the substrate; optionally, the orthographic projection of the second isolation sub-portion on the substrate is located within the orthographic projection of the third isolation sub-portion on the substrate.

[0030] In some possible implementations, the third isolator portion includes a conductive material; optionally, the third isolator portion includes a metal; optionally, the corrosion resistance of the third isolator portion is greater than that of the second isolator portion; and / or, the oxidation resistance of the third isolator portion is stronger than that of the second isolator portion; and / or, the conductivity of the third isolator portion is less than that of the second isolator portion; optionally, the third isolator portion includes molybdenum metal or titanium metal; optionally, the thickness of the second isolator portion is greater than the thickness of the third isolator portion.

[0031] In some possible implementations, the first isolation portion has a groove-shaped structure, the second sub-part is the bottom of the groove-shaped structure, and at least a portion of the first sub-part is the sidewall of the groove-shaped structure; optionally, at least a portion of the first sub-part is curved or arc-shaped; optionally, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit with different light-emitting colors.

[0032] The first distance corresponding to the first light-emitting unit is equal to the second distance corresponding to the second light-emitting unit, or the absolute value of the difference between the first distance and the second distance is less than or equal to 10% of the first distance corresponding to the first light-emitting unit;

[0033] Wherein, the first distance is the distance between the orthographic projection of the side of the first sub-part corresponding to the first light-emitting unit away from the second sub-part on the substrate and the orthographic projection of the sidewall of the second isolation part facing the isolation opening on the substrate, and the second distance is the distance between the orthographic projection of the side of the first sub-part corresponding to the second light-emitting unit away from the second sub-part on the substrate and the orthographic projection of the sidewall of the second isolation part facing the isolation opening on the substrate.

[0034] Optionally, the first distance is greater than or equal to 0.3 μm and less than or equal to 4 μm;

[0035] Optionally, the first sub-part and the second sub-part are on the same layer and made of the same material;

[0036] Optionally, the cross-section of the first isolation portion is curved or zigzag-shaped, the cross-section of the first isolation portion is perpendicular to the substrate, and the cross-section of the first isolation portion is parallel to the arrangement direction of the first sub-part and the second sub-part;

[0037] Optionally, along the thickness direction of the substrate, the depth of the groove-shaped structure is greater than or equal to 0.1 μm and less than or equal to 3 μm.

[0038] In some possible implementations,

[0039] The orthographic projection of the surface of the second isolation portion away from the substrate onto the substrate is located within the orthographic projection of the first isolation portion onto the substrate.

[0040] And / or, the first electrode is electrically connected to the second isolation portion; and / or, the first electrode is in electrical contact with the first isolation portion; and / or, the second isolation portion is in contact with the second sub-part; and / or, the first isolation portion includes a conductive material; and / or, the first isolation portion includes a metal; and / or, the first isolation portion includes titanium; and / or, the second isolation portion includes a conductive material; and / or, the second isolation portion includes a metal; and / or, the second isolation portion includes aluminum; and / or, at least a portion of the material of the second isolation portion has weaker oxidation resistance than the material of the first isolation portion; and / or, at least a portion of the material of the second isolation portion has weaker corrosion resistance than the material of the first isolation portion; and / or, the thickness of the second isolation portion is greater than the thickness of the first isolation portion; and / or, at least a portion of the material of the second isolation portion has higher conductivity than the material of the first isolation portion; and / or, the isolation opening includes a first opening and a second opening arranged and connected along the thickness direction of the substrate, the first sub-part enclosing to form the first opening, and the second isolation portion enclosing to form the second opening; and / or, the side of the first sub-part closer to the substrate is in contact with the second isolation portion.

[0041] In some possible implementations, the light-emitting unit further includes a second electrode and a light-emitting layer stacked sequentially in a direction away from the substrate, with the first electrode located on the side of the light-emitting layer away from the substrate;

[0042] Optionally, the light-emitting layer extends to the sidewall of the second isolation portion facing the isolation opening; optionally, the second isolation portion includes: a first isolation sub-portion and a second isolation sub-portion; the second isolation sub-portion is located between the first isolation sub-portion and the substrate; the light-emitting layer extends to the sidewall of the second isolation sub-portion facing the isolation opening; optionally, the second isolation portion further includes: a third isolation sub-portion; the third isolation sub-portion is located between the second isolation sub-portion and the substrate; and / or, the light-emitting layer extends from the sidewall of the second isolation sub-portion facing the isolation opening to the sidewall of the first isolation sub-portion facing the isolation opening; optionally, the orthographic projection of the second electrode on the substrate is outside the orthographic projection of the second sub-portion on the substrate; optionally, the orthographic projection of the second electrode on the substrate overlaps with the orthographic projection of the second isolation portion on the substrate; optionally, the first electrodes of the plurality of light-emitting units are electrically connected through an isolation structure.

[0043] In some possible implementations, the display panel further includes a pixel defining layer, the pixel defining layer including a pixel opening that exposes at least a portion of the second electrode; the pixel opening communicates with a corresponding isolation opening; optionally, the isolation structure is located on the side of the pixel defining layer away from the substrate; or, the pixel defining layer is provided with a clearance opening, and the isolation structure is located in the clearance opening; optionally, the side of the second electrode exposed by the pixel opening away from the substrate includes a plane; optionally, at least a portion of the second electrode is located between the pixel defining layer and the substrate; optionally, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate; optionally, at least a portion of the light-emitting layer and at least a portion of the first electrode are located within the isolation opening.

[0044] In some possible implementations, the display panel further includes a first encapsulation layer located on the side of the light-emitting unit away from the substrate, the first encapsulation layer including a plurality of spaced-apart encapsulation units;

[0045] Optionally, at least a portion of the packaging unit extends from the sidewall of the isolation structure toward the isolation opening to the side of the first sub-part away from the substrate;

[0046] Optionally, the packaging units are spaced apart on the side of the first isolation portion away from the substrate.

[0047] In some possible implementations, a second gap exists between the packaging unit located on the side of the first isolation portion away from the substrate and the side of the first sub-part away from the substrate; optionally, the display panel further includes a second packaging layer located on the side of the first packaging layer away from the substrate; optionally, the second packaging layer fills the second gap; optionally, the first packaging layer includes an inorganic material, and optionally, the second packaging layer includes an organic material; optionally, the display panel further includes a third packaging layer located on the side of the second packaging layer away from the substrate; optionally, the third packaging layer includes an inorganic material.

[0048] In some possible implementations, this application also provides a display panel, including:

[0049] substrate;

[0050] An isolation structure is located on a substrate and encloses an isolation opening. The isolation structure includes a second isolation portion and a first isolation portion stacked sequentially in a direction away from the substrate. The first isolation portion includes a first sub-part and a second sub-part, with the first sub-part located between the second sub-part and the isolation opening. In the thickness direction of the substrate, the distance between the side of the first sub-part away from the second sub-part and the substrate is greater than the distance between the second sub-part and the substrate. The second isolation portion includes a second isolation sub-part and a first isolation sub-part stacked sequentially in a direction away from the substrate.

[0051] The light-emitting unit includes a first electrode, at least a portion of which is located within an isolation opening, and the first electrode extends through a second isolating portion toward the sidewall of the isolation opening.

[0052] In some possible implementations, this application also provides a method for manufacturing a display panel, the method comprising:

[0053] Provide substrate;

[0054] An isolation structure is formed on a substrate, and the isolation structure encloses an isolation opening. The isolation structure includes a second isolation portion and a first isolation portion stacked sequentially in a direction away from the substrate. The first isolation portion includes a first sub-part and a second sub-part, and the first sub-part is located between the second sub-part and the isolation opening. In the thickness direction of the substrate, the distance between the side of the first sub-part away from the second sub-part and the substrate is greater than the distance between the second sub-part and the substrate.

[0055] At least a portion of the film layer of the light-emitting unit is formed within the isolation opening. The at least portion of the film layer of the light-emitting unit includes at least a portion of the first electrode, at least a portion of which is located within the isolation opening. The first electrode extends through a second isolation portion toward the sidewall of the isolation opening to the side of the second isolation portion away from the substrate.

[0056] In some possible implementations, the step of forming an isolation structure on the substrate includes:

[0057] A second isolation portion is formed on the substrate, and the second isolation portion surrounds and forms a second opening;

[0058] A protective layer is formed on a substrate, at least a portion of which is located in the second opening. The protective layer is provided with a third opening, at least a portion of which is located outside the orthogonal projection of the second opening on the substrate. The orthogonal projection of the third opening on the substrate and the orthogonal projection of the second isolation portion on the substrate overlap.

[0059] A first isolation portion is formed on the side of the second isolation portion away from the substrate. At least a portion of the first isolation portion is located in the third opening. The first isolation portion surrounds the first opening. The first opening and the corresponding second opening are connected to form an isolation opening.

[0060] The isolation opening includes a first isolation opening and a second isolation opening. The step of forming at least a portion of the film layer of the light-emitting unit within the isolation opening includes:

[0061] Remove the protective layer inside the first isolation opening, and retain the protective layer inside the second isolation opening;

[0062] At least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening, and a corresponding encapsulation unit is formed on the side of the first light-emitting unit away from the substrate. The first electrode of the first light-emitting unit extends from the first isolation portion toward the sidewall of the first isolation opening to the side of the second isolation portion away from the substrate.

[0063] Remove the protective layer inside the second isolation opening;

[0064] At least a portion of the film layer of the second light-emitting unit is formed within the second isolation opening, and a corresponding encapsulation unit is formed on the side of the second light-emitting unit away from the substrate. The first electrode of the second light-emitting unit extends through the first isolation portion toward the sidewall of the second isolation opening to the side of the second isolation portion away from the substrate.

[0065] Optionally, forming a first isolation portion on the side of the second isolation portion away from the substrate includes:

[0066] A first insulating material layer is formed on the side of the protective layer away from the substrate and within the third opening;

[0067] Removing the protective layer within the first isolation opening while retaining the protective layer within the second isolation opening includes:

[0068] Remove the first isolation material layer and protective layer corresponding to the first isolation opening, and retain the first isolation material layer and the protective layer inside the second isolation opening and the third opening;

[0069] Removing the protective layer within the second isolation opening includes:

[0070] Remove the first isolation material layer and protective layer corresponding to the second isolation opening, and retain the first isolation material layer corresponding to the third opening to form the first isolation part;

[0071] Optionally, at least a portion of the film layer forming the light-emitting unit within the isolation opening includes: a first electrode and a light-emitting layer forming the light-emitting unit within the isolation opening;

[0072] Optionally, along the thickness direction of the substrate, the distance between the protective layer and the substrate on the side away from the substrate is greater than the distance between the second isolation portion and the substrate on the side away from the substrate.

[0073] Optionally, the first electrode extends through the sidewall of the second isolation portion toward the isolation opening to the first gap between the second isolation portion and the first sub-part on the side of the second isolation portion away from the substrate;

[0074] Optionally, there is no light-emitting layer between the protective layer and the substrate;

[0075] Optionally, before forming the isolation structure on the substrate, the method further includes:

[0076] The second electrode of the light-emitting unit is formed on the substrate.

[0077] In some possible implementations, this application also provides an electronic device, which includes the display panel described in this application, or a display panel prepared by the method for preparing the display panel described in this application.

[0078] Compared with the prior art, this application has the following beneficial effects:

[0079] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By setting the first electrode to extend through the sidewall of the second isolation portion toward the isolation opening to the side of the second isolation portion away from the substrate, the overlap impedance between the first electrode and the isolation structure can be reduced, thereby improving the display effect of the display panel. Attached Figure Description

[0080] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0081] Figure 1 A cross-sectional schematic diagram of the display panel in the related technology provided in the embodiments of this application;

[0082] Figure 2 This is one of the schematic cross-sectional views of the display panel provided in the embodiments of this application;

[0083] Figure 3 This is a second schematic cross-sectional view of the display panel provided in an embodiment of this application;

[0084] Figure 4 This is the third schematic diagram of the cross-sectional view of the display panel provided in the embodiments of this application;

[0085] Figure 5Fourth schematic diagram of the cross-section of the display panel provided in the embodiments of this application;

[0086] Figure 6 Fifth schematic diagram of the cross-section of the display panel provided in the embodiments of this application;

[0087] Figure 7 This is the sixth schematic diagram of the cross-sectional view of the display panel provided in the embodiments of this application;

[0088] Figure 8 This is the seventh schematic diagram of a cross-sectional view of a display panel provided in an embodiment of this application;

[0089] Figure 9 Eighth schematic diagram of the cross-section of the display panel provided in the embodiments of this application;

[0090] Figure 10 One of the cross-sectional schematic diagrams of a display panel including a first encapsulation layer provided in the embodiments of this application;

[0091] Figure 11 A second cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0092] Figure 12 A third cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0093] Figure 13 A fourth cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0094] Figure 14 Fifth cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0095] Figure 15 A sixth cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0096] Figure 16 Seventh cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0097] Figure 17 Eighth cross-sectional schematic diagram of a display panel including a first encapsulation layer provided in the embodiments of this application;

[0098] Figure 18 One of the cross-sectional schematic diagrams of the display panel provided in the embodiments of this application, including a second encapsulation layer and a third encapsulation layer;

[0099] Figure 19a A second cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including a second encapsulation layer and a third encapsulation layer;

[0100] Figure 19b A third cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including a second encapsulation layer and a third encapsulation layer;

[0101] Figure 20 This is the ninth schematic diagram of a cross-sectional view of a display panel provided in an embodiment of this application;

[0102] Figure 21 This is one of the flowcharts illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0103] Figure 22 A cross-sectional schematic diagram showing a second electrode layer formed on one side of a substrate, provided for an embodiment of this application;

[0104] Figure 23 A cross-sectional schematic diagram showing a pixel defining material layer formed on the side of the second electrode layer away from the substrate, provided for an embodiment of this application;

[0105] Figure 24 A cross-sectional schematic diagram showing a second isolation material layer formed on the side of the pixel defining material layer away from the substrate, provided in an embodiment of this application;

[0106] Figure 25 A cross-sectional view of the second isolation material layer and the pixel defining material layer after patterning in sequence, as provided in the embodiments of this application;

[0107] Figure 26 This is a cross-sectional view showing a protective layer formed in the isolation opening and on the side of the second isolation portion away from the substrate, as provided in an embodiment of this application.

[0108] Figure 27 A cross-sectional view showing a first insulating material layer formed on the side of the protective layer away from the substrate, as provided in an embodiment of this application;

[0109] Figure 28 This application provides a cross-sectional view of patterning a first insulating material layer to form a first insulating portion, as shown in the embodiments of this application.

[0110] Figure 29 This is a cross-sectional schematic diagram of the first isolation opening after the protective layer has been removed, as provided in an embodiment of this application.

[0111] Figure 30 A cross-sectional schematic diagram showing at least a portion of the film layer forming the first light-emitting unit within the first isolation opening and the encapsulation material layer corresponding to the first light-emitting unit forming on the side of the first light-emitting unit away from the substrate, provided for an embodiment of this application;

[0112] Figure 31 This is a schematic cross-section of the first light-emitting unit after removing the film layer and encapsulation material layer not covered by the etch barrier layer, as provided in an embodiment of this application, and after removing the etch barrier layer.

[0113] Figure 32 This is a schematic cross-section diagram showing the removal of the protective layer within the second isolation opening, as provided in an embodiment of this application.

[0114] Figure 33 This is one of the cross-sectional views of at least a portion of the film layer forming the second light-emitting unit within the second isolation opening and forming the corresponding packaging unit of the second light-emitting unit on the side of the second light-emitting unit away from the substrate, as provided in the embodiments of this application.

[0115] Figure 34 This is a schematic cross-section diagram showing the removal of the protective layer within the third isolation opening, as provided in an embodiment of this application.

[0116] Figure 35 A cross-sectional view of at least a portion of the film layer in which the third light-emitting unit is formed within the third isolation opening, and of the packaging unit corresponding to the third light-emitting unit being formed on the side of the third light-emitting unit away from the substrate, provided for embodiments of this application;

[0117] Figure 36 This is a second schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0118] Figure 37 A cross-sectional schematic diagram of the cross-section after removing the protective layer and the first isolation material layer corresponding to the first isolation opening, as provided in an embodiment of this application;

[0119] Figure 38 A cross-sectional schematic diagram provided for an embodiment of this application, showing at least a portion of the film layer forming the first light-emitting unit in the first isolation opening and the encapsulation unit corresponding to the first light-emitting unit forming on the side of the first light-emitting unit away from the substrate;

[0120] Figure 39 This is a cross-sectional view of the protective layer and the first isolation material layer corresponding to the second isolation opening provided in an embodiment of this application;

[0121] Figure 40 This is a second cross-sectional view of at least a portion of the film layer forming the second light-emitting unit within the second isolation opening, and of the encapsulation unit corresponding to the second light-emitting unit forming on the side of the second light-emitting unit away from the substrate, as provided in the embodiments of this application.

[0122] Reference numerals: 1. Substrate; 2. Second electrode; 3. Pixel defining layer; 31. Pixel opening; 4. Light-emitting layer; 5. First electrode; 6. Isolation structure; 62. Second isolation portion; 621. First isolation sub-portion; 622. Second isolation sub-portion; 623. Third isolation sub-portion; 63. First isolation portion; 631. First sub-portion; 6311. Connecting portion; 6312. Edge portion; 632. Second sub-portion; 7. Isolation opening; 701. First opening; 702. Second opening; 71. First isolation opening; 72. Second isolation opening; 73. Third isolation opening; 8. Light-emitting unit; 9. Metal oxide; 10. Groove structure; 11. First encapsulation layer; 111. Encapsulation unit; 12. Second encapsulation layer; 13. Third encapsulation layer; 14. Pixel defining material layer; 15. Second isolation material layer; 16. Protective layer; 161. Third opening; 17. First isolation material layer; 18. Encapsulation material layer; 19. Etching barrier layer; 20. First gap. Detailed Implementation

[0123] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0124] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0125] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0126] In the description of this application, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0127] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0128] Increasing the density of light-emitting units (i.e., pixel density) in a display panel is an important way to improve display performance. However, display panels manufactured using Fine Metal Mask (FMM) technology are limited by technical constraints and cannot further increase the density of light-emitting units. Through long-term research, the inventors discovered that to solve the technical problem of not being able to further increase the density of light-emitting units, an isolation structure can be incorporated into some display panels. During the full-layer vapor deposition of the light-emitting functional layer and the second electrode, the light-emitting functional layer and the second electrode can be disconnected at the isolation structure. Through multiple vapor deposition and etching processes (i.e., patterning of light-emitting units), light-emitting units of different colors can be formed in different isolation openings.

[0129] Among them, patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072 describe relevant technical solutions for isolation structures (or partition structures or isolation pillars) and encapsulation layers, the contents of which are incorporated herein by reference.

[0130] Please see Figure 1 The display panel in the related technology includes a substrate 1, an isolation structure 6 located on the substrate 1, and a light-emitting unit 8 located at least partially within an isolation opening 7 formed by the isolation structure 6. The first electrode 5 (e.g., a cathode) of the light-emitting unit 8 is electrically connected to the isolation structure 6. However, the overlap area between the first electrode 5 and the isolation structure 6 in the related technology is small, which increases the overlap impedance between the first electrode 5 and the second isolation portion 62, thereby seriously affecting the display effect of the display panel.

[0131] To address the aforementioned technical problems, the inventors have innovatively designed the following technical solutions, which will be described in detail below with reference to the accompanying drawings. It should be noted that the deficiencies in the existing solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the aforementioned technical problems and the solutions proposed in this embodiment below are contributions made by the inventors to this application during the invention process, and should not be construed as technical content known to those skilled in the art.

[0132] Please see Figures 2-3 This embodiment provides a display panel, which includes a substrate 1, an isolation structure 6, and a light-emitting unit 8.

[0133] An isolation structure 6 is located on the substrate 1. The isolation structure 6 encloses and forms an isolation opening 7. The isolation structure 6 includes a second isolation portion 62 and a first isolation portion 63 stacked sequentially along the direction Z away from the substrate 1. The first isolation portion 63 includes a first sub-part 631 and a second sub-part 632. The first sub-part 631 is located between the second sub-part 632 and the isolation opening 7. Along the thickness direction Z of the substrate 1, the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the second sub-part 632 and the substrate 1.

[0134] The light-emitting unit includes a first electrode, at least a portion of which is located within an isolation opening. The first electrode 5 extends through a second isolation portion 62 toward the sidewall of the isolation opening 7 to the side of the second isolation portion 62 away from the substrate 1.

[0135] At least a portion of the light-emitting unit 8 is located within the isolation opening 7, and the light-emitting unit 8 includes a first electrode 5 located within the isolation opening 7.

[0136] For example, the second isolation portion 62 has a first gap 20 between the side away from the substrate 1 and the first sub-portion 631. For example, the first electrode 5 extends through the second isolation portion 62 toward the sidewall of the isolation opening 7 to the first gap 20 between the side of the second isolation portion 62 away from the substrate 1 and the first sub-portion 631.

[0137] Substrate 1 may include a substrate. The display panel includes the substrate and a plurality of driving units located on the substrate, each driving unit including one or more semiconductor switching devices. The semiconductor switching devices may be formed by multiple film layers on substrate 1, for example, the semiconductor switching devices may be thin-film transistors formed by multiple film layers. The substrate may be a rigid substrate, such as a glass substrate. The substrate may be a flexible substrate, such as an organic material including polyimide.

[0138] When forming the light-emitting layer and the first electrode layer of the light-emitting unit, the light-emitting layer and the first electrode layer of the light-emitting unit are separated by the isolation structure 6 at the first isolation portion 63 to form a plurality of light-emitting layers and first electrodes 5 (e.g., cathodes) of the light-emitting unit that are spaced apart and located in the isolation opening 7.

[0139] Since the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the second sub-part 632 and the substrate 1, that is, along the thickness direction of the substrate 1, there is a height difference between the side of the first sub-part 631 away from the second sub-part 632 and the second sub-part 632. The distances between the side of the first sub-part 631 away from the second sub-part 632 and the second sub-part 632 and the same flat surface of the substrate 1 can be different. Therefore, when evaporating the light-emitting layer of the light-emitting unit 8 of the display panel and the first electrode 5, it is easier to separate the entire light-emitting layer and the first electrode 5. At the same time, it can effectively increase the contact area between the evaporated first electrode 5 and the isolation structure 6, so that the first electrode 5 of the light-emitting unit 8 can form a better coplanar electrical connection, that is, it can reduce the resistance of the first electrode 5 and the isolation structure 6, reduce the corresponding voltage drop, and thus effectively improve the connection effect between the first electrode 5 and the isolation structure 6.

[0140] Optionally, along the thickness direction of the substrate 1, the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the side of the first sub-part 631 closer to the second sub-part 632 and the substrate 1.

[0141] After the isolation structure 6 is patterned, during the multiple etching processes that form the light-emitting unit 8, it can effectively ensure that the electrical connection difference between the first electrode 5 of the adjacent light-emitting unit 8 and the isolation structure 6 is smaller, and the second electrode 2 of the light-emitting unit 8 is less likely to be damaged, which can ultimately effectively improve the display effect of the display panel.

[0142] By controlling the vapor deposition angle of the first electrode 5, the first electrode 5 can extend to the first gap 20 between the side of the second isolation portion 62 away from the substrate 1 and the first sub-portion 631. In this way, the overlap area between the first electrode 5 and the isolation structure 6 can be increased, thereby reducing the overlap impedance between the first electrode 5 and the isolation structure 6, which in turn can improve the display effect of the display panel and reduce the power consumption of the display panel.

[0143] Based on the above design, this embodiment sets the first electrode 5 to extend through the sidewall of the second isolation portion 62 toward the isolation opening 7 to the side of the second isolation portion 62 away from the substrate 1. For example, the first electrode 5 is set to extend through the sidewall of the second isolation portion 62 toward the isolation opening 7 to the side of the second isolation portion 62 away from the substrate 1 and the first gap 20 between the first sub-part 631. This can reduce the overlap impedance between the first electrode 5 and the isolation structure 6, thereby improving the display effect of the display panel.

[0144] In some possible implementations, the light-emitting unit 8 may further include a second electrode 2 and a light-emitting layer 4 stacked sequentially along a direction away from the substrate 1, with the first electrode 5 located on the side of the light-emitting layer 4 away from the substrate 1.

[0145] Optionally, the display panel also includes a pixel defining layer 3, which includes a pixel opening 31 that exposes at least a portion of the second electrode 2.

[0146] Optionally, the pixel opening 31 is connected to the corresponding isolation opening 7.

[0147] Optionally, the isolation structure 6 is located on the side of the pixel defining layer 3 away from the substrate 1; or, the pixel defining layer 3 is provided with a clearance opening, and the isolation structure 6 is located in the clearance opening.

[0148] Optionally, the orthographic projection of the pixel opening 31 on the substrate 1 is located within the orthographic projection of the isolation opening 7 on the substrate 1.

[0149] Optionally, at least a portion of the light-emitting layer 4 and at least a portion of the first electrode 5 are located within the isolation opening 7.

[0150] Optionally, at least a portion of the second electrode 2 is located between the pixel defining layer 3 and the substrate 1.

[0151] The isolation structure 6 allows the display panel to form light-emitting layers and related film layers such as the first electrode of different light-emitting units 8 in different isolation openings 7 without the need for a fine metal mask. Specifically, since the first isolation portion 63 is located on the side of the second isolation portion 62 away from the substrate 1, and the lateral width of the first isolation portion 63 is greater than the lateral width of the second isolation portion 62, when forming the light-emitting material layer, the light-emitting material layer is separated by the isolation structure 6 to form multiple spaced light-emitting layers 4, corresponding to multiple independent light-emitting units. When forming the first electrode layer, the first electrode layer is separated by the isolation structure 6 to form multiple spaced first electrodes 5. The isolation structure 6 includes a conductive material, and the first electrodes 5 are electrically connected to the isolation structure 6. For example, one first electrode 5, one light-emitting layer 4, and one second electrode 2 form one light-emitting unit 8. The first electrode 5 can be a cathode, and the second electrode 2 can be an anode.

[0152] In this way, different light-emitting units 8 can be made independent of each other, thereby reducing crosstalk between adjacent light-emitting units 8 and improving the display effect of the display panel. At the same time, due to the presence of the isolation structure 6, the light-emitting layer and the first electrode layer in each color light-emitting unit 8 of the display panel can be prepared as a whole before patterning, thereby eliminating the need for a fine metal mask and saving the manufacturing cost of the display panel.

[0153] Optionally, the side of the second electrode 2 exposed by the pixel opening 31 away from the substrate 1 includes a flat surface. Since the second electrode 2 exposed by the pixel opening 31 is protected by the protective layer 16 during the fabrication of the display panel, the side of the second electrode 2 exposed by the pixel opening 31 away from the substrate 1 is flat. In this way, the display effect of the corresponding light-emitting unit 8 can be improved, and the display effect of the display panel can be further improved.

[0154] Optionally, the orthographic projection of the second electrode 2 on the substrate 1 is outside the orthographic projection of the second sub-part 632 on the substrate 1, that is, the orthographic projection of the second electrode 2 on the substrate 1 and the orthographic projection of the second sub-part 632 on the substrate 1 do not overlap. In this way, the second electrode 2 is less likely to affect the morphology of the first isolation part 63, thereby making the arrangement of the first isolation part 63 more stable.

[0155] Optionally, the orthographic projection of the second electrode 2 on the substrate 1 overlaps with the orthographic projection of the second isolation portion 62 on the substrate 1. In this way, the second electrode 2 can be made as large as possible, thereby reducing the impedance of the second electrode 2.

[0156] In some possible implementations, please refer again. Figures 2-3 Along the direction away from the second sub-part 632, the distance between the first sub-part 631 and the substrate 1 in the thickness direction Z of the substrate 1 gradually increases.

[0157] Optionally, at least a portion of the surface of the first sub-part 631 is located at an angle β with the surface of the second isolation part 62 that is away from the substrate 1.

[0158] In this way, the first isolation section 63 can more easily isolate the entire light-emitting layer from the first electrode 5, and at the same time can effectively increase the contact area between the vapor-deposited first electrode 5 and the isolation structure 6, thereby effectively improving the overlap effect between the first electrode 5 and the isolation structure 6.

[0159] Optionally, please see again Figures 2-3 The included angle β between at least a portion (e.g., part or all) of the first sub-part 631 and the surface of the second isolation part 62 away from the substrate 1 is greater than or equal to 20° and less than or equal to 40°. For example, the included angle β can be 20°, 25°, 30°, 35°, or 40°. If the included angle β is too large, it may affect the effect of the first isolation part 63 in isolating the first electrode layer. Therefore, setting the included angle β reasonably can improve the overall stability of the isolation structure 6 and further improve the overlap effect between the first electrode 5 and the first isolation part 63. The lower limit of the range of included angle β can be 20°, 25°, 30°, 35°, or 38°, etc. The upper limit of the range of included angle β can be 22°, 25°, 30°, 35°, or 40°, etc. The included angle β can be greater than or equal to the lower limit of included angle β and less than or equal to the upper limit of included angle β.

[0160] It is worth noting that, please refer again. Figure 3 When the cross-sectional shape of the first sub-part 631 is arc-shaped or curved, the angle between the tangent of the arc-shaped or curved cross-section of the first sub-part 631 and the surface of the second isolation part 62 away from the substrate 1 is greater than or equal to 20° and less than or equal to 40°.

[0161] Optionally, along the thickness direction Z of the substrate 1, the distance between the side of the first sub-part 631 away from the second sub-part 632 (that is, the side closer to the isolation opening 7) and the substrate 1 minus the distance between the second sub-part 632 and the substrate 1 (equivalent to the height difference H1 between the two) is greater than or equal to 0.1 μm and less than or equal to 3 μm.

[0162] The height difference H1 is greater than or equal to 1 μm and less than or equal to 3 μm. For example, the height difference H1 can be 0.1 μm, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm. A properly set height difference H1 can not only improve the overall stability of the isolation structure 6, but also improve the connection effect between the first electrode 5 and the isolation structure 6. The lower limit of the value range of the height difference H1 can be 0.1 μm, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 2.8 μm, etc. The upper limit of the value range of the height difference H1 can be 0.3 μm, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm, etc. The height difference H1 can be greater than or equal to the lower limit of the height difference H1, and less than or equal to the upper limit of the height difference H1.

[0163] In some possible implementations, the first isolation portion 63 is a groove-shaped structure 10, the second sub-portion 632 is the bottom of the groove-shaped structure 10, and at least a portion of the first sub-portion 631 is the sidewall of the groove-shaped structure 10.

[0164] Optionally, the orthographic projection of the second sub-part 632 on the substrate 1 overlaps with the orthographic projection of the second isolation part 62 on the substrate 1. Optionally, the orthographic projection of the second sub-part 632 on the substrate 1 is located within the orthographic projection of the surface of the second isolation part 62 away from the substrate 1 on the substrate 1.

[0165] Optionally, the orthographic projection of the first sub-part 631 on the substrate 1 overlaps with the orthographic projection of the surface of the second isolation part 62 away from the substrate 1 on the substrate 1.

[0166] Optionally, at least a portion of the orthographic projection of the first sub-part 631 onto the substrate 1 is located outside the orthographic projection of the surface of the second isolation portion 62 away from the substrate 1 onto the substrate 1. Alternatively, the orthographic projection of the first sub-part 631 onto the substrate 1 is located within the orthographic projection of the surface of the second isolation portion 62 away from the substrate 1 onto the substrate 1.

[0167] Optionally, the orthographic projection of the center of the second sub-part 632 onto the substrate 1 coincides with the orthographic projection of the center of the second isolation part 62 onto the substrate 1. For example, in the cross-section perpendicular to the substrate of the isolation structure between at least two adjacent isolation openings, the orthographic projection of the center of the second sub-part 632 onto the substrate 1 coincides with the orthographic projection of the center of the second isolation part 62 onto the substrate 1.

[0168] Optionally, the orthographic projection of the surface of the second isolation portion 62 away from the substrate 1 onto the substrate 1 lies within the orthographic projection of the first isolation portion 63 onto the substrate 1. For example, the orthographic projection area of ​​the surface of the second isolation portion 62 away from the substrate 1 onto the substrate 1 is smaller than the orthographic projection area of ​​the first isolation portion 63 onto the substrate 1.

[0169] Optionally, the second isolation section 62 contacts the second subsection 632, for example, through electrical contact.

[0170] The first isolation portion 63 has a groove recessed towards the substrate 1 on the side away from the substrate 1 (that is, the side of the groove-shaped structure 10 away from the substrate). The orthographic projection of the groove-shaped structure 10 on the substrate 1 at least partially coincides with the orthographic projection of the side of the second isolation portion 62 away from the substrate 1 on the substrate 1. The orthographic projection of the groove-shaped structure 10 on the substrate 1 is located within the orthographic projection of the side of the second isolation portion 62 away from the substrate 1 on the substrate 1. The center of the orthographic projection of the groove-shaped structure 10 on the substrate 1 coincides with the center of the orthographic projection of the side of the second isolation portion 62 away from the substrate 1 on the substrate 1. The orthographic projection of the side of the groove-shaped structure 10 near the substrate 1 on the substrate 1 is located outside the orthographic projection of the first gap 20 on the substrate 1. The orthographic projection of the side of the groove-shaped structure 10 near the substrate 1 on the substrate 1 is located between the orthographic projections of two adjacent first gaps 20 on the substrate 1. The first isolation portion 63 can protrude towards the substrate 1 on the side near the substrate 1 and the side away from the substrate. That is, the side of the second sub-part near the substrate is closer to the substrate than the side of the first sub-part away from the second sub-part, and the side of the second sub-part away from the substrate is closer to the substrate than the side of the first sub-part away from the second sub-part.

[0171] Thus, the first isolation section 63 can be in the shape of "flying eaves". The first isolation section 63 can more easily divide the whole layer or large area of ​​light-emitting layer into multiple light-emitting units 8 at intervals, divide the whole layer or large area of ​​first electrode layer into multiple first electrodes 5 at intervals, and further improve the overlap effect between the first electrode 5 and the isolation structure 6.

[0172] Optionally, please see again Figures 2-3 Along the thickness direction Z of substrate 1, the depth H2 of the groove structure 10 is greater than or equal to 0.1 μm and less than or equal to 3 μm.

[0173] Depth H2 is equal to the height difference H1. For example, depth H2 can be 0.1µm, 0.5µm, 1µm, 1.5µm, 2µm, 2.5µm, or 3µm. Properly setting depth H2 not only improves the overall stability of the isolation structure 6 but also enhances the connection between the first electrode 5 and the isolation structure 6. The lower limit of the value range of depth H2 can be 0.1µm, 0.5µm, 1µm, 1.5µm, 2µm, 2.5µm, or 2.8µm. The upper limit of the value range of depth H2 can be 0.3µm, 0.5µm, 1µm, 1.5µm, 2µm, 2.5µm, or 3µm. Depth H2 can be greater than or equal to the lower limit of depth H2, and less than or equal to the upper limit of depth H2.

[0174] In some possible implementations, please refer again. Figures 2-3 The orthographic projection of the second isolation portion 62 on the substrate 1 coincides with the orthographic projection of the side of the first isolation portion 63 away from the substrate 1 on the substrate 1.

[0175] Optionally, the orthographic projection of the first isolation portion 63 on the substrate 1 is located within the orthographic projection of the second isolation portion 62 on the substrate 1 on the side away from the substrate 1. For example, the orthographic projection area of ​​the first isolation portion 63 on the substrate 1 is less than or equal to the orthographic projection area of ​​the second isolation portion 62 on the substrate 1 on the side away from the substrate 1.

[0176] Optionally, at least a portion of the orthographic projection of the first sub-part 631 onto the substrate 1 is located outside the orthographic projection of the second isolation part 62 onto the substrate 1. This arrangement improves the isolation effect of the first isolation part 63 on the light-emitting layer and the first electrode layer.

[0177] In this way, the isolation effect can be improved. The first isolation part 63 may include a conductive material, which can further reduce the transmission resistance of the power signal of the first electrode.

[0178] Optionally, please see again Figures 2-3The second sub-part 632 has a dimension W1 along the first direction that is greater than or equal to 2 μm and less than or equal to 8 μm. The first direction is parallel to the substrate 1, i.e., along the arrangement direction of the isolation openings 7. The width W1 of the orthogonal projection of the side of the groove-shaped structure 10 closest to the substrate 1 onto the substrate 1 is greater than or equal to 2 μm and less than or equal to 8 μm. For example, the width W1 can be 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, or 8 μm. A reasonable setting of the width W1 can improve the stability of the first isolation part 63 disposed on the second isolation part 62, thereby improving the overall stability of the isolation structure 6. The lower limit of the value range of dimension W1 can be 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, or 7.5 μm, etc. The upper limit of the value range of dimension W1 can be 2.5 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, or 8 μm, etc. Dimension W1 can be greater than or equal to the lower limit of dimension W1 and less than or equal to the upper limit of dimension W1.

[0179] For some possible implementations, please refer to Figure 4 The distance W2 between the orthographic projection of the side of the first sub-part 631 near the second sub-part 632 on the substrate 1 and the orthographic projection of the boundary line of the second isolation part 62 away from the substrate 1 and the sidewall of the second isolation part 62 toward the isolation opening 7 on the substrate 1 is greater than or equal to 1 μm and less than or equal to 2 μm.

[0180] For example, the distance W2 can be 1µm, 1.1µm, 1.2µm, 1.5µm, 1.7µm, 1.9µm, or 2µm. Properly setting the distance W2 can not only improve the stability of the first isolation portion 63 on the second isolation portion 62, but also reduce the overlap impedance between the first electrode 5 and the second isolation portion 62 on the side away from the substrate 1. The lower limit of the range of values ​​for distance W2 can be 1µm, 1.1µm, 1.2µm, 1.5µm, 1.7µm, 1.9µm, or 1.95µm, etc. The upper limit of the range of values ​​for distance W2 can be 1.05µm, 1.1µm, 1.2µm, 1.5µm, 1.7µm, 1.9µm, or 2µm, etc. Distance W2 can be greater than or equal to the lower limit of distance W2, and less than or equal to the upper limit of distance W2. Distance W2 is equivalent to the depth of the first gap 20.

[0181] Optionally, please see Figure 4The distance W3 between the orthographic projection of the side of the first sub-part 631 away from the second sub-part 632 on the substrate 1 and the orthographic projection of the boundary line between the surface of the second isolation part 62 away from the substrate 1 and the sidewall of the second isolation part 62 facing the isolation opening 7 on the substrate 1 is greater than or equal to 0.5 μm and less than or equal to 2 μm. For example, the distance W3 can be 0.5 μm, 0.7 μm, 1 μm, 1.5 μm, 1.8 μm, or 2 μm. By reasonably setting the distance W3, the overlap effect between the first electrode 5 and the second isolation part 62 after being isolated by the first isolation part 63 can be further improved. The lower limit of the range of values ​​for distance W3 can be 0.5 μm, 0.7 μm, 1 μm, 1.5 μm, 1.8 μm, or 1.9 μm, etc. The upper limit of the range of values ​​for distance W3 can be 0.6 μm, 0.7 μm, 1 μm, 1.5 μm, 1.8 μm, or 2 μm, etc. The distance W3 can be greater than or equal to the lower limit of the distance W3, and less than or equal to the upper limit of the distance W3.

[0182] Normally, the distance W2 between the orthographic projection of the side of the first sub-part 631 closest to the second sub-part 632 on the substrate 1 and the orthographic projection of the boundary line between the surface of the second isolation part 62 away from the substrate 1 and the sidewall of the second isolation part 62 facing the isolation opening 7 on the substrate 1 is greater than the distance W3 between the orthographic projection of the side of the first sub-part 631 closest to the second sub-part 632 on the substrate 1 and the orthographic projection of the boundary line between the surface of the first isolation part 63 away from the substrate 1 and the sidewall of the second isolation part 62 facing the isolation opening 7 on the substrate 1. This further improves the overlap effect between the first electrode 5 and the second isolation part 62 after the first isolation part 63 has separated it.

[0183] In some possible implementations, please refer again. Figure 2 The first sub-part 631 includes an edge portion 6312 and a connecting portion 6311. The edge portion 6312 is located on the side of the connecting portion 6311 away from the second sub-part 632. The connecting portion 6311 connects the edge portion 6312 and the second sub-part 632. At least a portion of the orthographic projection of the connecting portion 6311 on the substrate 1 overlaps with the orthographic projection of the surface of the second isolation portion 62 away from the substrate on the substrate 1.

[0184] Optionally, the first gap exists between the side of the connecting portion near the substrate and the side of the second isolation portion away from the substrate.

[0185] The orthographic projection of the connecting part 6311 on the substrate 1 is located on the side of the second isolation part 62 away from the substrate, within the orthographic projection on the substrate 1.

[0186] Optionally, the second sub-part 632 is a flat part and parallel to the substrate 1.

[0187] Optionally, the edge portion 6312 is a flat portion and parallel to the substrate 1. Alternatively, the surface where the edge portion 6312 is located is inclined or curved relative to the surface where the substrate is located.

[0188] Optionally, the surface where the connecting portion 6311 is located may be perpendicular, inclined, or bent relative to the surface where the substrate 1 is located.

[0189] Optionally, along the direction away from the second sub-part 632, the distance between the connecting part 6311 and the second isolation part 62 on the side away from the substrate gradually increases along the thickness direction of the substrate.

[0190] Optionally, the orthographic projection of the edge portion 6312 on the substrate 1 is located outside the orthographic projection of the second isolation portion 62 on the substrate 1 on the side away from the substrate.

[0191] Optionally, along the arrangement direction of the orthographic projection of the connecting portion 6311 on the substrate 1 and the orthographic projection of the edge portion 6312 on the substrate 1, the width of the orthographic projection of the connecting portion 6311 on the substrate 1 (i.e., W2) is greater than or equal to 1 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the edge portion 6312 on the substrate (i.e., W3) is greater than or equal to 0.5 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the connecting portion 6311 on the substrate is greater than the width of the orthographic projection of the edge portion 6312 on the substrate.

[0192] Optionally, please see again Figure 3 In some embodiments, at least a portion of the first sub-part 631 is curved or arc-shaped.

[0193] Optionally, the first electrode is electrically connected to the second isolation section.

[0194] For example, the first electrode 5 makes contact with the first isolation portion 631, such as an electrical contact. In this way, the overlap impedance between the first electrode 5 and the isolation structure 2 can be further reduced.

[0195] Please see Figure 2 and Figure 3 In some embodiments, the second isolation portion 62 is a single-layer membrane.

[0196] Optionally, the thickness (i.e., film thickness) of the second isolation portion 62 is greater than the thickness (i.e., film thickness) of the first isolation portion 63.

[0197] Optionally, the second isolation section 62 includes a conductive material.

[0198] Optionally, the second isolation section 62 includes metal.

[0199] Optionally, the second isolation section 62 comprises aluminum.

[0200] In this embodiment, the first electrode 5 extends to the side of the second isolation portion 62 away from the substrate 1, which can increase the contact area between the first electrode 5 and the second isolation portion 62, thereby reducing the overlap impedance between the first electrode 5 and the second isolation portion 62, and thus improving the display effect of the display panel.

[0201] Please see Figure 4 and Figure 5 In other embodiments, the second isolation portion 62 may include a multilayer film layer stacked along the thickness direction Z of the substrate.

[0202] Optionally, the second isolation portion 62 includes a first isolation sub-portion 621 and a second isolation sub-portion 622; the second isolation sub-portion 622 is located between the first isolation sub-portion 621 and the substrate; the first isolation sub-portion 621 is located between the second isolation sub-portion 622 and the first isolation portion 63.

[0203] Optionally, the orthographic projection of the first isolation sub-part 621 on the substrate 1 lies within the orthographic projection of the second isolation sub-part 622 on the substrate 1. For example, the orthographic projection of the first isolation sub-part 621 on the substrate 1 lies within the orthographic projection of the side of the second isolation sub-part 622 away from the substrate on the substrate 1. For example, the orthographic projection area of ​​the first isolation sub-part 621 on the substrate 1 is equal to or less than the orthographic projection area of ​​the side of the second isolation sub-part 622 away from the substrate on the substrate 1.

[0204] For example, the orthographic projection of the first isolation sub-part 621 on the substrate 1 coincides with the orthographic projection of the side of the second isolation sub-part 622 away from the substrate on the substrate 1.

[0205] Optionally, the first electrode 5 extends through the second isolation sub-part 622 and the first isolation sub-part 621 toward the sidewall of the isolation opening 72 to the first gap 20 between the first isolation sub-part 621 and the first sub-part 631 on the side of the first isolation sub-part 621 away from the substrate 1.

[0206] Optionally, the first electrode contacts the second isolator 622, for example, through electrical contact.

[0207] Optionally, the first electrode contacts the first isolator portion 621, for example, through electrical contact.

[0208] Optionally, the first isolation sub-section 621 includes a conductive material; and / or, the second isolation sub-section 622 includes a conductive material. The materials of the first isolation sub-section 621 and the second isolation sub-section 622 may be different.

[0209] Optionally, the first isolation sub-section 621 includes metal; and / or, the second isolation sub-section 622 includes metal.

[0210] Please see Figure 4 and Figure 5In some other embodiments, the corrosion resistance of the first isolation sub-part 621 is less than that of the second isolation sub-part 622.

[0211] Optionally, the antioxidant properties of the first isolator 621 are weaker than those of the second isolator 622.

[0212] Optionally, the conductivity of the first isolator 621 is greater than the conductivity of the second isolator 622.

[0213] Optionally, the first isolation sub-section 621 comprises aluminum metal; the second isolation sub-section 622 comprises molybdenum metal or titanium metal.

[0214] Optionally, the thickness of the first isolation sub-part 621 is greater than the thickness of the second isolation sub-part 622;

[0215] Optionally, the thickness of the first isolation portion 63 is less than the thickness of the first isolation sub-portion 621.

[0216] In this embodiment, since the second isolation portion 622 has stronger antioxidant properties than the first isolation portion 621, the second isolation portion 622 is less likely to be oxidized than the first isolation portion 621.

[0217] Please see Figure 6 and Figure 7 In some other embodiments, the corrosion resistance of the first isolation sub-part 621 is optionally greater than that of the second isolation sub-part 622.

[0218] Optionally, the antioxidant properties of the first isolation sub-section 621 are stronger than those of the second isolation sub-section 622.

[0219] Optionally, the conductivity of the first isolator 621 is less than the conductivity of the second isolator 622.

[0220] Optionally, the first isolation sub-section 621 comprises molybdenum or titanium. The second isolation sub-section 622 comprises aluminum.

[0221] Optionally, the thickness of the first isolation sub-part 621 is less than the thickness of the second isolation sub-part 622.

[0222] Optionally, the thickness of the first isolation portion 63 is less than the thickness of the second isolation sub-portion 622.

[0223] Please see again Figure 1 In related technologies, when the second isolator 622 comprises aluminum, its surface readily reacts with oxygen to form a metal oxide 9, such as aluminum oxide. When the first electrode 5 is electrically connected to the second isolator 622, it increases the bridging impedance between them, thus severely affecting the display effect of the display panel.

[0224] In this embodiment, since the first isolating portion 621 has stronger oxidation resistance than the second isolating portion 622, the first isolating portion 621 is less prone to oxidation than the second isolating portion 622. The first electrode 5 extends through the first isolating portion 621 and the second isolating portion 622 toward the sidewall of the isolation opening 7 to the surface of the first isolating portion 621 away from the substrate, for example, it can make electrical contact with the surface of the first isolating portion 621 away from the substrate, which can reduce the overlap resistance between the first electrode 5 and the second isolating portion 62, thereby further improving the display effect of the display panel.

[0225] Optionally, along the direction perpendicular to the substrate 1, the thickness H3 of the first isolator portion 621 is greater than or equal to... and less than or equal to For example, the thickness H3 can be or By appropriately setting the thickness H3, the overlap impedance between the first electrode 5 and the second insulator 622 on the side furthest from the substrate 1 can be reduced without excessively increasing the thickness of the isolation structure 6. The lower limit of the range of values ​​for thickness H3 can be... or The upper limit of the numerical range for thickness H3 can be... or The thickness H3 may be greater than or equal to the lower limit of the thickness H3, and less than or equal to the upper limit of the thickness H3. For example, the first isolation sub-section 621 may comprise molybdenum or titanium. See also [link to relevant documentation] for some possible implementations. Figure 8 and Figure 9 The isolation structure 6 also includes a third isolation sub-section 623, which is located between the second isolation sub-section 622 and the substrate 1.

[0226] The orthographic projection of the second isolation sub-part 622 on the substrate 1 is located within the orthographic projection of the third isolation sub-part 623 on the substrate 1.

[0227] For example, the orthographic projection of the second isolation sub-part 622 on the substrate 1 coincides with the orthographic projection of the third isolation sub-part 623 on the substrate 1.

[0228] Optionally, the third isolation sub-section 623 includes a conductive material.

[0229] Optionally, the third isolation sub-section 623 includes metal.

[0230] Optionally, the third isolation sub-section 623 has greater corrosion resistance than the second isolation sub-section 622.

[0231] Optionally, the third isolator 623 has stronger antioxidant properties than the second isolator 622.

[0232] Optionally, the conductivity of the third isolator 623 is less than that of the second isolator 622.

[0233] Optionally, the materials of the third isolation sub-section 623 and the second isolation sub-section 622 may be different.

[0234] Optionally, the materials of the third isolation sub-section 623 and the first isolation sub-section 621 may be the same or different.

[0235] Optionally, the third isolation sub-section 623 comprises molybdenum or titanium. Optionally, the first isolation sub-section 621 comprises molybdenum or titanium. The second isolation sub-section 622 comprises aluminum.

[0236] Optionally, the thickness of the second isolation sub-part 622 is greater than the thickness of the first isolation sub-part 621, and the thickness of the second isolation sub-part 622 is greater than the thickness of the third isolation sub-part 623.

[0237] Optionally, the thickness of the first isolation portion 63 is less than the thickness of the second isolation sub-portion 622.

[0238] In this embodiment, since the oxidation resistance of the first isolation sub-part 621 and the third isolation sub-part 623 is greater than that of the second isolation sub-part 622, and the corrosion resistance of the first isolation sub-part 621 and the third isolation sub-part 623 is greater than that of the second isolation sub-part 622, the first isolation sub-part 621 and the third isolation sub-part 623 are less likely to be oxidized than the second isolation sub-part 622.

[0239] Optionally, along a direction perpendicular to the substrate, the thickness of the third spacer portion 623 is greater than or equal to... and less than or equal to

[0240] In some possible implementations, please refer again. Figure 4 The second isolation section 62 comes into contact with the second subsection 632, for example, through electrical contact.

[0241] Optionally, the first isolation portion 63 includes a conductive material; for example, the first isolation portion 63 includes a metal; for example, the first isolation portion 63 includes titanium.

[0242] Optionally, the second isolation portion includes a conductive material, such as a metal, for example, aluminum.

[0243] Optionally, at least a portion of the material of the second isolation portion 62 has weaker oxidation resistance than the material of the first isolation portion 63.

[0244] Optionally, at least a portion of the material of the second isolation section 62 has weaker corrosion resistance than the material of the first isolation section 63.

[0245] Optionally, the thickness of the second isolation portion 62 is greater than the thickness of the first isolation portion 63.

[0246] Optionally, at least a portion of the material of the second isolation portion 62 has a higher conductivity than the material of the first isolation portion 63.

[0247] Optionally, the isolation opening 7 includes a first opening 701 and a second opening 702 arranged and connected along the thickness direction Z of the substrate 1. The first sub-part 631 surrounds and forms the first opening 701, and the second isolation part 62 surrounds and forms the second opening 702, as shown below. Figure 4 As shown.

[0248] Optionally, the side of the first sub-part 631 closest to the substrate 1 contacts the second isolation part 62, for example, through electrical contact.

[0249] This embodiment can increase the overlap area between the first electrode and the isolation structure 6, thereby further reducing the overlap impedance between the first electrode 5 and the isolation structure 6.

[0250] Optionally, the cross-section of the second isolation portion 62 perpendicular to the substrate may be trapezoidal. For example, the projected area of ​​the side of the second isolation portion 62 away from the substrate on the substrate is smaller than the projected area of ​​the side of the second isolation portion 62 closer to the substrate on the substrate. For example, the projected area of ​​the side of the first isolation sub-portion 621 away from the substrate on the substrate is smaller than the projected area of ​​the side of the third isolation sub-portion 623 closer to the substrate on the substrate.

[0251] Optionally, the first electrode 5 is in contact with at least a portion of the sidewall of the second isolation portion 62 facing the isolation opening, for example, through electrical contact, and / or, a light-emitting layer is provided between the first electrode 5 and the sidewall of the second isolation portion 62 facing the isolation opening.

[0252] Optionally, the first electrode 5 is in contact with at least a portion of the sidewall of the first isolation sub-part 621 facing the isolation opening, for example, through electrical contact, and / or, a light-emitting layer is provided between the first electrode 5 and the sidewall of the first isolation sub-part 621 facing the isolation opening.

[0253] Optionally, the first electrode 5 is in contact with at least a portion of the sidewall of the second isolation sub-part 622 facing the isolation opening, for example, through electrical contact, and / or, a light-emitting layer is provided between the first electrode 5 and the sidewall of the second isolation sub-part 622 facing the isolation opening.

[0254] Optionally, the first electrode 5 is in contact with at least a portion of the sidewall of the third isolation sub-part 623 facing the isolation opening, for example, through electrical contact, and / or, a light-emitting layer is provided between the first electrode 5 and the sidewall of the third isolation sub-part 623 facing the isolation opening.

[0255] Optionally, the first electrodes 5 of multiple light-emitting units 8 are electrically connected through an isolation structure 6. For example, the first electrodes 5 of multiple light-emitting units 8 with different light-emitting colors are electrically connected through the isolation structure 6.

[0256] In some possible implementations, please refer again. Figures 2-3 The light-emitting unit 8 includes a first light-emitting unit and a second light-emitting unit with different light-emitting colors.

[0257] The first distance SA1 corresponding to the first light-emitting unit is equal to the second distance SA2 corresponding to the second light-emitting unit, or the absolute value of the difference between the first distance SA1 and the second distance SA2 is less than or equal to 10% of the first distance corresponding to the first light-emitting unit.

[0258] Optionally, the absolute value of the difference between the first distance SA1 and the second distance SA2 is less than or equal to 5% of the first distance corresponding to the first light-emitting unit. Optionally, the absolute value of the difference between the first distance SA1 and the second distance SA2 is less than or equal to 3% of the first distance corresponding to the first light-emitting unit. Optionally, the absolute value of the difference between the first distance SA1 and the second distance SA2 is less than or equal to 1% of the first distance corresponding to the first light-emitting unit.

[0259] Wherein, the first distance SA1 is the orthographic projection on the substrate 1 of the side of the first sub-part 631 corresponding to the first light-emitting unit that is away from the second sub-part 632 and the orthographic projection on the substrate 1 of the sidewall of the second isolation part 62 facing the isolation opening 7, and the second distance SA2 is the distance on the substrate 1 of the orthographic projection on the substrate 1 of the side of the first sub-part 631 corresponding to the second light-emitting unit that is away from the second sub-part 632 and the orthographic projection on the substrate 1 of the sidewall of the second isolation part 62 facing the isolation opening 7.

[0260] That is, the first distance SA1 corresponding to the first light-emitting unit is equal to the second distance SA2 corresponding to the second light-emitting unit. The first light-emitting unit and the second light-emitting unit emit different colors. For example, the first light-emitting unit can be a red light-emitting unit 8, and the second light-emitting unit can be a green light-emitting unit 8.

[0261] Because the protective layer 16 covers the sidewalls of the isolation structure 6 during the fabrication of the display panel, the sidewalls of the isolation structure 6 are less prone to etching during the patterning of the light-emitting units 8. Consequently, the first distance SA1 corresponding to the first light-emitting unit and the second distance SA2 corresponding to the second light-emitting unit in the final formed display panel are equal or approximately equal. Thus, the overlap effect between the first electrode 5 of the first light-emitting unit and the corresponding isolation structure 6 is essentially the same as or differs less significantly from the overlap area, overlap resistance, or overlap effect between the first electrode 5 of the second light-emitting unit and the corresponding isolation structure 6. This results in essentially the same or less different display effects for the first and second light-emitting units, ultimately improving the display uniformity of the display panel. And / or, by covering the sidewalls of the isolation structure 6 with the protective layer 16 during the fabrication of the display panel, the degree, risk, or area of ​​oxidation of the sidewalls of the isolation structure 6 facing the isolation opening can be reduced.

[0262] Optionally, the first distance SA1 (or the second distance SA2) is greater than or equal to 0.3 μm and less than or equal to 4 μm. That is, the distance between the edge of the orthographic projection of the first isolation portion 63 on the substrate 1 and the edge of the orthographic projection of the second isolation portion 62 on the substrate 1 is greater than or equal to 0.3 μm and less than or equal to 4 μm. For example, the first distance SA1 and / or the second distance SA2 can both be 0.3 μm, 1 μm, 2 μm, 3 μm, or 4 μm, etc. By reasonably setting this distance, the overlap effect between the first electrode 5 and the isolation structure 6 can be further improved.

[0263] In some possible implementations, please refer again. Figures 2-3 The first sub-part 631 and the second sub-part 632 are in the same layer and made of the same material. For example, the first sub-part 631 and the second sub-part 632 are obtained by patterning the same film layer.

[0264] Optionally, the cross-section of the first isolation portion 63 is curved or zigzag-shaped, the cross-section of the first isolation portion 63 is perpendicular to the substrate 1, and the cross-section of the first isolation portion 63 is parallel to the arrangement direction of the first sub-portion 631 and the second sub-portion 632. This makes it easier for the first isolation portion 63 to isolate the first electrode layer into the first electrode 5. This also makes it easier for the first isolation portion 63 to isolate a large area or the entire surface of the light-emitting layer into multiple discrete light-emitting layers corresponding one-to-one with multiple light-emitting units.

[0265] Optionally, please see again Figures 2-3The thickness H4 of the first isolation portion 63 is greater than or equal to 100nm and less than or equal to 300nm. For example, the thickness H4 can be 100nm, 150nm, 200nm, 250nm, or 300nm. By reasonably setting the thickness H4, without affecting the overall structural stability of the isolation structure 6 and the isolation effect of the first isolation portion 63 on the light-emitting material layer and the first electrode layer, the thickness of the display panel can be increased without excessive increase. The lower limit of the numerical range of thickness H4 can be 100nm, 150nm, 200nm, 250nm, or 280nm, etc. The upper limit of the numerical range of thickness H4 can be 120nm, 150nm, 200nm, 250nm, or 300nm, etc. Thickness H4 can be greater than or equal to the lower limit of thickness H4 and less than or equal to the upper limit of thickness H4.

[0266] For some possible implementations, please refer to Figure 10-17 The display panel also includes a first encapsulation layer 11 located on the side of the light-emitting unit 8 away from the substrate 1, and the first encapsulation layer 11 includes a plurality of encapsulation units 111 spaced apart.

[0267] Optionally, at least a portion of the encapsulation unit 111 extends from the sidewall of the isolation structure 6 toward the isolation opening 7 to the side of the isolation structure 6 (e.g., the first sub-section) away from the substrate 1.

[0268] Optionally, the packaging unit 111 is spaced apart on the side of the isolation structure 6 (e.g., the first isolation portion) away from the substrate 1. For example, the edge of the packaging unit 111 is located on the side of the isolation structure 6 (e.g., the first isolation portion) away from the substrate 1, and there is a second gap between it and the side of the isolation structure 6 away from the substrate 1.

[0269] During the patterning process of the light-emitting unit 8, the first encapsulation layer 11 is disconnected at the isolation structure 6 to form an encapsulation unit 111. The encapsulation unit 111 can completely and independently encapsulate the corresponding light-emitting unit 8, thereby improving the display characteristics of the display panel.

[0270] Optionally, a first gap 20 is provided between the side of the first sub-part 631 near the substrate 1 and the side of the second isolation part 62 away from the substrate 1, and the encapsulation unit 111 fills the first gap 20. In this way, the stability between the encapsulation unit 111 and the isolation structure 6 can be increased, thereby improving the encapsulation effect of the encapsulation unit 111 on the light-emitting unit 8.

[0271] Optionally, please see Figure 18 and Figure 19a The display panel also includes a second encapsulation layer 12 located on the side of the first encapsulation layer 11 away from the substrate 1.

[0272] Optionally, the second encapsulation layer 12 fills the second gap; thus, the stability of the encapsulation unit 111 can be improved.

[0273] Optionally, the first encapsulation layer 11 includes an inorganic material.

[0274] Optionally, the second encapsulation layer 12 comprises an organic material.

[0275] Optionally, please see Figure 18 and Figure 19a The display panel also includes a third encapsulation layer 13 located on the side of the second encapsulation layer 12 away from the substrate 1.

[0276] Optionally, the third encapsulation layer 13 comprises an inorganic material.

[0277] For example, the first encapsulation layer 11 and the third encapsulation layer 13 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 12 can be formed by inkjet printing (IJP). The second encapsulation layer 12 and the third encapsulation layer 13 can achieve a better encapsulation effect on the light-emitting unit 8, thereby further improving the encapsulation quality of the display panel.

[0278] In some embodiments, see Figure 19b The light-emitting layer 4 extends to the sidewall of the second isolation section 62 facing the isolation opening 7.

[0279] Optionally, the light-emitting layer 4 extends to the sidewall of the second isolator 622 facing the isolation opening 7.

[0280] Optionally, the light-emitting layer 4 extends from the sidewall of the second isolation sub-part 622 toward the isolation opening 7 to the sidewall of the first isolation sub-part 621 toward the isolation opening 7.

[0281] Optionally, the light-emitting layer 4 extends from the sidewall of the third isolation sub-section 63 and the second isolation sub-section 622 toward the sidewall of the isolation opening 7 to the sidewall of the first isolation sub-section 621 toward the isolation opening 7.

[0282] Optionally, the light-emitting layer 4 may extend to the side of the second isolation portion away from the substrate. For example, the light-emitting layer 4 may extend to the first gap 20 between the side of the second isolation portion away from the substrate and the first sub-part. Alternatively, the light-emitting layer 4 may not extend to the side of the second isolation portion away from the substrate. For example, the light-emitting layer 4 may not extend to the first gap 20 between the side of the second isolation portion away from the substrate and the first sub-part. The light-emitting layer 4 is located outside the first gap 20 to avoid the light-emitting layer affecting the overlap impedance between the first electrode 5 and the isolation structure.

[0283] In some possible implementations, this application also provides a display panel, including a substrate 1, an isolation structure 6, and a light-emitting unit 8.

[0284] An isolation structure 6 is located on the substrate 1, and the isolation structure 6 encloses and forms an isolation opening 7. The isolation structure 6 includes a second isolation portion 62 and a first isolation portion 63 stacked sequentially in a direction away from the substrate 1. The first isolation portion 63 includes a first sub-part 631 and a second sub-part 632. The first sub-part 631 is located between the second sub-part 632 and the isolation opening 7. In the thickness direction Z of the substrate 1, the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the second sub-part 632 and the substrate 1. The second isolation portion 62 includes a second isolation sub-part 622 and a first isolation sub-part 621 stacked sequentially in a direction away from the substrate 1.

[0285] At least a portion of the light-emitting unit 8 is located within the isolation opening 7. The light-emitting unit 8 includes a first electrode 5 located within the isolation opening 7. The first electrode 5 extends from the second isolation sub-part 622 toward the sidewall of the isolation opening 7 to the sidewall of the first isolation sub-part 621 toward the isolation opening 7.

[0286] In some embodiments, see Figure 20 The first electrode 5 extends from the sidewall of the second isolator 622 toward the isolator opening 7 to the sidewall of the first isolator 621 toward the isolator opening 7, for example, in contact or in electrical contact with the sidewall of the first isolator 621 toward the isolator opening 7.

[0287] For example, a first gap 20 is provided between the side of the first sub-part 631 that is close to the substrate 1 and the side of the second isolation part 62 that is far away from the substrate 1.

[0288] In other embodiments, please refer again. Figure 6 The first electrode 5 extends from the second isolator 622 toward the sidewall of the isolator opening 7 to the side of the first isolator 621 away from the substrate 1. For example, the first electrode 5 is in contact or in electrical contact with the side of the first isolator 621 away from the substrate 1.

[0289] Since the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the second sub-part 632 and the substrate 1, it is easier to separate the entire light-emitting layer and the first electrode 5 when evaporating the light-emitting layer of the light-emitting unit 8 of the display panel and the first electrode 5. At the same time, it can effectively increase the contact area between the evaporated first electrode 5 and the isolation structure 6, reduce the resistance of the overlap between the first electrode 5 and the isolation structure 6, reduce the corresponding voltage drop, and thus effectively improve the overlap effect between the first electrode 5 and the isolation structure 6.

[0290] Meanwhile, in the multiple etching processes of forming the light-emitting unit 8 after the isolation structure 6 is patterned, it can effectively ensure that the electrical connection difference between the first electrode 5 of the light-emitting unit 8 with at least two different light-emitting colors and the isolation structure 6 is smaller, and the second electrode 2 of the light-emitting unit 8 is less likely to be damaged, which can ultimately effectively improve the display effect of the display panel.

[0291] Since the orthographic projection of the side of the second isolation portion 62 away from the substrate on the substrate 1 is located within the orthographic projection of the first isolation portion 63 on the substrate 1, when the first electrode layer is formed, the first electrode layer is separated at the first isolation portion 63 by the isolation structure 6 to form a plurality of spaced first electrodes 5 located in the isolation opening 7. Both the first isolation sub-part 621 and the second isolation sub-part 622 include conductive materials. For example, the material of the first isolation sub-part 621 includes aluminum, and the material of the second isolation sub-part 622 includes molybdenum.

[0292] By controlling the vapor deposition angle of the first electrode 5, the first electrode 5 can be extended to contact or make electrical contact with at least a portion of the first isolation sub-part 621. This increases the overlap area between the first electrode 5 and the isolation structure 6, thereby reducing the overlap impedance between the first electrode 5 and the isolation structure 6. This, in turn, improves the display effect of the display panel and reduces the power consumption of the display panel.

[0293] This embodiment can be combined with some or all of the technical features in the above embodiments, which will not be repeated here.

[0294] For some possible implementations, please refer to Figure 21 This application also provides a method for manufacturing a display panel, which can be used to manufacture the display panel in the above embodiments. The method includes:

[0295] S10: Provide substrate 1.

[0296] S11: An isolation structure 6 is formed on the substrate 1. The isolation structure 6 encloses an isolation opening 7. The isolation structure 6 includes a second isolation portion 62 and a first isolation portion 63 stacked sequentially in a direction away from the substrate 1. The first isolation portion 63 includes a first sub-part 631 and a second sub-part 632. The first sub-part 631 is located between the second sub-part 632 and the isolation opening 7. In the thickness direction Z of the substrate 1, the distance between the side of the first sub-part 631 away from the second sub-part 632 and the substrate 1 is greater than the distance between the second sub-part 632 and the substrate 1.

[0297] Optionally, please see Figure 22 For example, before S11, a second electrode of the light-emitting unit is formed on the substrate. For example, a second electrode layer is formed on the substrate 1, and the second electrode layer includes a plurality of second electrodes 2 arranged at intervals, such as the second electrode 2 including an anode.

[0298] Optionally, please see Figures 23-25 After the second electrode 2 is formed, a pixel defining material layer 14 and a second isolation material layer 15 are sequentially formed on the side of the second electrode layer away from the substrate 1. The second isolation material layer 15 and the pixel defining material layer 14 are then patterned sequentially to form at least a second isolation portion 62 and a pixel defining layer 3. The pixel defining layer 3 includes a pixel opening 31 that exposes at least a portion of the second electrode 2. The film layer where the second isolation portion 62 is located forms at least a portion of the isolation opening 7, such as a second opening 702.

[0299] Optionally, the second insulating material layer 15 is patterned to form a second insulating portion 62. For example, the second insulating portion 62 includes a first insulating sub-portion 621 and a second insulating sub-portion 622, or the second insulating portion 62 includes a first insulating sub-portion 621, a second insulating sub-portion 622, and a third insulating sub-portion 623. The second insulating portion 62 encloses at least a portion of the insulating opening 7, such as a second opening 702. Compared to Figure 1 The structure eliminates the need for side etching of the second isolation section 62, reducing the side etching process.

[0300] The isolation opening 7 includes at least two of the following: a first isolation opening 71, a second isolation opening 72, and a third isolation opening 73.

[0301] Please see Figure 26 A protective layer 16 is formed on substrate 1. At least a portion of the protective layer 16 is located at the second opening 702. The protective layer 16 has a third opening 161. At least a portion of the orthographic projection of the third opening 161 onto substrate 1 is located outside the orthographic projection of the second opening 702 onto substrate 1. The orthographic projection of the third opening 161 onto substrate 1 overlaps with the orthographic projection of the second isolation portion 62 onto substrate 1. A protective material layer can be formed first, and then the protective material layer can be patterned to form the protective layer 16 including the third opening 161. The protective layer 16 can reduce the need for side etching of the second isolation portion 62, or eliminate the need for side etching of the second isolation portion 62. And / or, the protective layer 16 can reduce the time, risk, or degree of oxidation of the sidewalls of the second isolation portion 62 (e.g., the second isolation sub-part).

[0302] Please see Figure 27 A first insulating material layer 17 is formed on the side of the protective layer 16 away from the substrate 1 and within the third opening 161.

[0303] Please see Figure 28 The first isolation material layer 17 is patterned to form a first isolation portion 63 on the side of the second isolation portion 62 away from the substrate 1. At least a portion of the first isolation portion 63 is located in the third opening 161. The first isolation portion 61 surrounds and forms a first opening 701. The first opening 701 and the corresponding second opening 702 are connected to form an isolation opening 7.

[0304] S12: At least a portion of the film layer of the light-emitting unit 8 is formed in the isolation opening 7. The at least portion of the film layer of the light-emitting unit 8 includes at least a portion of the first electrode 5. At least a portion of the first electrode 5 is located in the isolation opening 7. The first electrode 5 extends through the second isolation portion 62 toward the sidewall of the isolation opening 7 to the side of the second isolation portion 62 away from the substrate.

[0305] For example, the first electrode 5 extends through the second isolation portion 62 toward the sidewall of the isolation opening 7 to the first gap 20 between the second isolation portion 62 on the side away from the substrate 1 and the first sub-part 631.

[0306] Please see Figure 29 Remove the protective layer 16 inside the first isolation opening 71, and retain the protective layer 16 inside the second isolation opening 72 and / or the third isolation opening 73.

[0307] At least a portion of the film layer of the first light-emitting unit is formed within the first isolation opening, and a corresponding encapsulation unit is formed on the side of the first light-emitting unit away from the substrate. See also... Figure 30 At least a portion of the film layer of the first light-emitting unit (such as the first electrode 5 and the light-emitting layer 4 of the first light-emitting unit) is formed within the first isolation opening 71, and a corresponding encapsulation material layer 18 is formed on the side of the first light-emitting unit away from the substrate 1. An etching barrier layer 19 is formed on the side of the encapsulation material layer 18 corresponding to the first light-emitting unit away from the substrate 1. At least a portion of the film layer of the first light-emitting unit and the encapsulation material layer 18 extend into the second isolation opening 72 and the third isolation opening 73. The etching barrier layer 19 can protect the encapsulation material layer 18 and the related film layer corresponding to the first light-emitting unit.

[0308] Please see Figure 31 The film layer and encapsulation material layer 18 of the first light-emitting unit not covered by the etching barrier layer 19 are removed (that is, the film layer and encapsulation material layer 18 of the first light-emitting unit corresponding to the second isolation opening 72 and / or the third isolation opening 73 are removed), and the etching barrier layer 19 is removed, so that at least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening 71 and the encapsulation unit 111 corresponding to the first light-emitting unit is formed on the side of the first light-emitting unit away from the substrate 1. The first electrode 5 of the first light-emitting unit extends through the first isolation portion 63 toward the sidewall of the first isolation opening 71 to the side of the second isolation portion 62 away from the substrate 1. That is, the protective layer 16 in the first isolation opening 71 is removed before the first light-emitting unit is formed in the first isolation opening 71.

[0309] Please see Figure 32 Remove the protective layer 16 inside the second isolation opening 72, or retain the protective layer 16 inside the third isolation opening 73.

[0310] Optionally, there is no light-emitting layer between the protective layer 16 and the substrate 1.

[0311] Please see Figure 33 At least a portion of the film layer of the second light-emitting unit (such as the first electrode 5 and the light-emitting layer 4 of the second light-emitting unit) is formed in the second isolation opening 72, and the encapsulation unit 111 corresponding to the second light-emitting unit is formed on the side of the second light-emitting unit away from the substrate 1. The first electrode 5 of the second light-emitting unit extends through the first isolation portion 63 toward the sidewall of the second isolation opening 72 to the side of the second isolation portion 62 away from the substrate 1. That is, the protective layer 16 in the second isolation opening 72 is removed before the second light-emitting unit is formed in the second isolation opening 72.

[0312] Please see Figure 34 Remove the protective layer 16 inside the third isolation opening 73.

[0313] Please see Figure 35 At least a portion of the film layer of the third light-emitting unit (such as the first electrode 5 and the light-emitting layer 4 of the third light-emitting unit) is formed in the third isolation opening 73, and the encapsulation unit 111 corresponding to the third light-emitting unit is formed on the side of the third light-emitting unit away from the substrate 1. The first electrode 5 of the third light-emitting unit extends from the first isolation portion 63 toward the sidewall of the third isolation opening 73 to the side of the second isolation portion 62 away from the substrate 1. That is, the protective layer 16 in the third isolation opening 73 is removed before the third light-emitting unit is formed in the third isolation opening 73.

[0314] Because a protective layer 16 is provided inside the second isolation opening 72 and the third isolation opening 73 during the patterning of the film layer and the encapsulation material layer 18 of the first light-emitting unit, it is not easy to etch the sidewalls of the isolation structure 6 corresponding to the second and third light-emitting units and the second electrode 2 exposed by the pixel opening 31. Similarly, because a protective layer 16 is provided inside the third isolation opening 73 during the patterning of the film layer and the encapsulation material layer 18 of the second light-emitting unit, it is not easy to etch the sidewalls of the isolation structure 6 corresponding to the third light-emitting unit and the second electrode 2 exposed by the pixel opening 31. Thus, after the second and third light-emitting units are formed, their respective first electrodes 5 can be well connected with the isolation structure 6, and the connection difference with the first light-emitting unit is relatively small. At the same time, the second electrodes 2 of the second and third light-emitting units are not easily damaged, and the film morphology is also relatively less different from that of the first light-emitting unit.

[0315] In the multiple etching processes after the overall pattern of the isolation structure 6 is formed, the protective layer 16 covers and protects the sidewalls of the isolation structure 6 corresponding to each light-emitting unit 8 in the subsequent process and the second electrode 2 exposed by the pixel opening 31. This makes the overlap area between the first electrode 5 of the display panel formed by the above method and the isolation structure 6 more sufficient, the overlap effect better, and the display uniformity of the display panel better, which can effectively reduce the display defect rate caused by the process.

[0316] Meanwhile, the first electrode 5 of the display panel formed by the above method can be electrically connected to the side of the first isolation sub-part 621 away from the substrate 1 where metal oxide 9 is not easily formed on the surface. This reduces the overlap impedance between the first electrode 5 and the isolation structure 6, thereby improving the display effect of the display panel and reducing the power consumption of the display panel.

[0317] For some possible implementations, please refer to Figure 36 This application also provides a method for manufacturing a display panel, the method comprising:

[0318] S20: Provide substrate 1.

[0319] S21: A second isolation portion 62 is formed on the substrate 1, and the second isolation portion 62 surrounds and forms a second opening 702.

[0320] S22: A protective layer 16 is formed on the substrate. At least a portion of the protective layer 16 is located at the second opening 702. The protective layer 16 is provided with a third opening 161. At least a portion of the orthographic projection of the third opening 161 on the substrate 1 is located outside the orthographic projection of the second opening 702 on the substrate 1. The orthographic projection of the third opening 161 on the substrate 1 and the orthographic projection of the second isolation portion 62 on the substrate 1 overlap. At least a portion of the orthographic projection of the third opening 161 on the substrate 1 and the orthographic projection of the second opening 702 on the substrate 1 are offset.

[0321] Please see again Figure 26 A protective layer 16 is formed within the second opening 702 and on the side of the second isolation portion 62 away from the substrate 1. The protective layer 16 is provided with a third opening 161, and at least part of the orthographic projection of the third opening 161 on the substrate 1 and the orthographic projection of the isolation opening 7 on the substrate 1 are offset. A protective material layer can be formed first, and then the protective material layer can be patterned to form a protective layer 16 including the third opening 161.

[0322] S23: A first insulating material layer 17 is formed on the side of the protective layer 16 away from the substrate 1 and within the third opening 161. See [link to relevant documentation]. Figure 27 .

[0323] S24: Remove the protective layer 16 and the first isolation material layer 17 corresponding to the first isolation opening 71, and retain the first isolation material layer 17 corresponding to the second isolation opening 72 and the third opening, as well as the protective layer 16 inside the second isolation opening 72.

[0324] Please see Figure 37 The protective layer 16 and the first insulating material layer 17 corresponding to the first isolation opening 71 are removed, while the protective layers 16 and the first insulating material layer 17 corresponding to the second isolation opening 72 and the third isolation opening 73 are retained. Thus, the sidewalls of the isolation structure 6 corresponding to the second isolation opening 72 and the third isolation opening 73, as well as the second electrode 2 exposed by the second isolation opening 72 and the third isolation opening 73, can be simultaneously protected by the protective layer 16 and the first insulating material layer 17. The first insulating material layer 17 corresponding to the third opening is retained to form the first isolation section.

[0325] S25: At least a portion of the film layer of the first light-emitting unit is formed in the first isolation opening 71, and a corresponding encapsulation unit 111 is formed on the side of the first light-emitting unit away from the substrate 1. The first electrode 5 of the first light-emitting unit extends from the second isolation sub-part 622 toward the side of the first isolation opening 71 to the side of the first isolation sub-part 621 away from the substrate 1. See [link to relevant documentation]. Figure 38 .

[0326] S26: Remove the protective layer 16 and the first isolation material layer 17 corresponding to the second isolation opening 72. Retain the first isolation material layer 17 corresponding to the third opening to form the first isolation section.

[0327] Please see Figure 39 Remove the protective layer 16 and the first isolation material layer 17 corresponding to the second isolation opening 72, and retain the protective layer 16 and the first isolation material layer 17 corresponding to the third isolation opening 73. In this way, the side wall of the isolation structure 6 corresponding to the third isolation opening 73 and the second electrode 2 exposed by the third isolation opening 73 can be protected by the protective layer 16 and the first isolation material layer 17 at the same time.

[0328] S27: At least a portion of the film layer of the second light-emitting unit is formed within the second isolation opening 72, and a corresponding encapsulation unit 111 is formed on the side of the second light-emitting unit away from the substrate 1. The first electrode 5 of the second light-emitting unit extends from the second isolation sub-part 622 toward the side of the second isolation opening 72 to the side of the first isolation sub-part 621 away from the substrate 1. See [link to relevant documentation]. Figure 40 .

[0329] Please see again Figure 34 Remove the protective layer 16 and the first isolation material layer 17 corresponding to the third isolation opening 73.

[0330] Please see again Figure 35At least a portion of the film layer of the third light-emitting unit is formed in the third isolation opening 73, and a corresponding encapsulation unit 111 is formed on the side of the third light-emitting unit away from the substrate 1. The first electrode 5 of the third light-emitting unit extends from the second isolation sub-part 622 toward the side of the third isolation opening 73 to the side of the first isolation sub-part 621 away from the substrate 1. That is, the protective layer 16 in the third isolation opening 73 is removed before the third light-emitting unit is formed in the third isolation opening 73.

[0331] Because a protective layer 16 and a first isolation material layer 17 are provided within the second isolation opening 72 and the third isolation opening 73 during the patterning of the film layer and encapsulation material layer 18 of the first light-emitting unit, it is less likely to etch the sidewalls of the isolation structure 6 corresponding to the second and third light-emitting units and the second electrode 2 exposed by the pixel opening 31. Similarly, because a protective layer 16 and a first isolation material layer 17 are provided within the third isolation opening 73 during the patterning of the film layer and encapsulation material layer 18 of the second light-emitting unit, it is less likely to etch the sidewalls of the isolation structure 6 corresponding to the third light-emitting unit and the second electrode 2 exposed by the pixel opening 31. Thus, after the second and third light-emitting units are formed, their respective first electrodes 5 can be well connected with the isolation structure 6, and the difference in connection with the first light-emitting unit is relatively small. At the same time, the second electrodes 2 of the second and third light-emitting units are not easily damaged, and the film morphology is also less different from that of the first light-emitting unit.

[0332] In some possible embodiments, this application also provides an electronic device that includes the display panel described in this application, or includes a display panel prepared by the method described in this application. This electronic device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Because this electronic device includes the display panel described in this application, it has better display quality.

[0333] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0334] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: substrate; An isolation structure is located on the substrate, the isolation structure encloses and forms an isolation opening, the isolation structure includes a second isolation portion and a first isolation portion stacked sequentially in a direction away from the substrate, the first isolation portion includes a first sub-part and a second sub-part, the first sub-part is located between the second sub-part and the isolation opening; along the thickness direction of the substrate, the distance between the side of the first sub-part away from the second sub-part and the substrate is greater than the distance between the second sub-part and the substrate; The light-emitting unit includes a first electrode, at least a portion of which is located within the isolation opening, and the first electrode extends through a second isolation portion toward the sidewall of the isolation opening to the side of the second isolation portion away from the substrate.

2. The display panel according to claim 1, characterized in that, Along the direction away from the second sub-part, the distance between the first sub-part and the substrate gradually increases along the thickness direction of the substrate; And / or, at least a portion of the first sub-part forms an angle with the surface of the second isolation portion away from the substrate; Preferably, the angle between at least a portion of the first sub-part and the surface of the second isolation portion away from the substrate is greater than or equal to 20° and less than or equal to 40°.

3. The display panel according to claim 1, characterized in that, The first electrode extends through the second isolation portion toward the sidewall of the isolation opening to the first gap between the second isolation portion on the side away from the substrate and the first sub-part; And / or, the distance between the orthographic projection of the side of the first sub-part near the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than or equal to 1 μm and less than or equal to 2 μm. And / or, corresponding to the same isolation opening, the distance between the orthographic projection of the side of the first sub-part away from the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than or equal to 0.5 μm and less than or equal to 2 μm. And / or, the distance between the orthographic projection of the side of the first sub-part closer to the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate is greater than the distance between the orthographic projection of the side of the first sub-part away from the second sub-part on the substrate and the orthographic projection of the boundary line between the surface of the second isolation part away from the substrate and the sidewall of the second isolation part on the substrate; And / or, the orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the surface of the second isolation part away from the substrate on the substrate, and the orthographic projection of the first sub-part on the substrate overlaps with the orthographic projection of the surface of the second isolation part away from the substrate on the substrate; And / or, at least a portion of the orthographic projection of the first sub-part onto the substrate is located outside the orthographic projection of the surface of the second isolation portion away from the substrate onto the substrate; And / or, the side of the first sub-part closest to the substrate contacts the second isolation part.

4. The display panel according to claim 1, characterized in that, The first sub-part includes an edge portion and a connecting portion, the edge portion being located on the side of the connecting portion away from the second sub-part; the connecting portion connecting the edge portion and the second sub-part, at least a portion of the orthographic projection of the connecting portion on the substrate overlaps with the orthographic projection of the surface of the second isolation portion away from the substrate on the substrate; Preferably, the second sub-part is a flat portion and parallel to the substrate. And / or, the edge portion is a flat portion and parallel to the substrate, or, the surface where the edge portion is located is inclined or curved relative to the surface where the substrate is located. And / or, the surface where the connection portion is located is perpendicular, inclined, or bent relative to the surface where the substrate is located; Preferably, the second isolation portion has a first gap between the side away from the substrate and the first sub-part, and the display panel further includes a first encapsulation layer located on the side of the light-emitting unit away from the substrate. The first encapsulation layer includes a plurality of encapsulation units spaced apart, and the encapsulation units fill the first gap. And / or, along the direction away from the second sub-part, the distance between the connecting portion and the second isolation portion on the side away from the substrate gradually increases along the thickness direction of the substrate; And / or, the first gap exists between the side of the connecting portion near the substrate and the side of the second isolation portion away from the substrate, and the orthographic projection of the connecting portion on the substrate lies within the orthographic projection of the side of the second isolation portion away from the substrate on the substrate. The orthographic projection of the edge portion on the substrate is located outside the orthographic projection of the second isolation portion on the substrate on the side away from the substrate; Along the arrangement direction of the orthographic projection of the connecting portion on the substrate and the orthographic projection of the edge portion on the substrate, the width of the orthographic projection of the connecting portion on the substrate is greater than or equal to 1 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the edge portion on the substrate is greater than or equal to 0.5 μm and less than or equal to 2 μm, and / or the width of the orthographic projection of the connecting portion on the substrate is greater than the width of the orthographic projection of the edge portion on the substrate.

5. The display panel according to claim 1, characterized in that, The second isolation layer is a single-layer membrane; Preferably, the thickness of the second isolation portion is greater than the thickness of the first isolation portion; Preferably, the second isolation portion comprises a conductive material; Preferably, the second isolation portion comprises metal; Preferably, the second insulating part comprises aluminum metal.

6. The display panel according to claim 1, characterized in that, The second isolation section includes: a first isolation subsection and a second isolation subsection; The second isolation sub-part is located between the first isolation sub-part and the substrate; Preferably, the orthographic projection of the first isolation sub-part on the substrate is located within the orthographic projection of the side of the second isolation sub-part away from the substrate on the substrate; Preferably, the orthographic projection of the first isolation sub-part on the substrate coincides with the orthographic projection of the side of the second isolation sub-part away from the substrate on the substrate; Preferably, the first isolation sub-part comprises a conductive material; and / or, the second isolation sub-part comprises a conductive material; Preferably, the first isolation sub-part comprises metal; and / or, the second isolation sub-part comprises metal; Preferably, the side of the second isolation portion away from the substrate has a first gap with the first sub-part; Preferably, the first electrode extends through the second isolating sub-part and the sidewall of the first isolating sub-part toward the isolation opening to the first gap between the first isolating sub-part and the first sub-part on the side of the first isolating sub-part away from the substrate.

7. The display panel according to claim 6, characterized in that, The corrosion resistance of the first isolation sub-part is greater than that of the second isolation sub-part; And / or, the antioxidant properties of the first isolator are stronger than those of the second isolator; And / or, the conductivity of the first isolator is less than the conductivity of the second isolator; Preferably, the first isolation sub-section comprises molybdenum or titanium; the second isolation sub-section comprises aluminum. Preferably, the thickness of the first isolation sub-part is less than the thickness of the second isolation sub-part; Preferably, the thickness of the first isolation portion is less than the thickness of the second isolation sub-portion; Preferably, along a direction perpendicular to the substrate, the thickness of the first insulating sub-part is greater than or equal to... and less than or equal to 8. The display panel according to claim 6, characterized in that, The corrosion resistance of the first isolation sub-part is less than that of the second isolation sub-part; And / or, the antioxidant properties of the first isolator are weaker than those of the second isolator; And / or, the conductivity of the first isolator is greater than the conductivity of the second isolator; Preferably, the first isolation sub-section comprises aluminum metal; the second isolation sub-section comprises molybdenum metal or titanium metal; Preferably, the thickness of the first isolation sub-part is greater than the thickness of the second isolation sub-part; Preferably, the thickness of the first isolation portion is less than the thickness of the first isolation sub-portion.

9. The display panel according to claim 6 or 7, characterized in that, The second isolation section also includes: a third isolation subsection; The third isolation sub-section is located between the second isolation sub-section and the substrate; Preferably, the orthographic projection of the second isolation sub-part on the substrate is located within the orthographic projection of the third isolation sub-part on the substrate.

10. The display panel according to claim 9, characterized in that, The third isolation sub-section includes a conductive material; Preferably, the third isolation sub-section comprises metal; Preferably, the corrosion resistance of the third isolation sub-part is greater than that of the second isolation sub-part; And / or, the antioxidant properties of the third isolator are stronger than those of the second isolator; And / or, the conductivity of the third isolator is less than the conductivity of the second isolator; Preferably, the third isolation sub-section comprises molybdenum or titanium. Preferably, the thickness of the second isolation sub-part is greater than the thickness of the third isolation sub-part.

11. The display panel according to claim 1, characterized in that, The first isolation portion has a groove-shaped structure, the second sub-part is the bottom of the groove-shaped structure, and at least a portion of the first sub-part is the sidewall of the groove-shaped structure; Preferably, at least a portion of the first sub-part is curved or arc-shaped; Preferably, the light-emitting unit includes a first light-emitting unit and a second light-emitting unit with different light-emitting colors; The first distance corresponding to the first light-emitting unit is equal to the second distance corresponding to the second light-emitting unit, or the absolute value of the difference between the first distance and the second distance is less than or equal to 10% of the first distance corresponding to the first light-emitting unit; Wherein, the first distance is the distance between the orthographic projection of the side of the first sub-part corresponding to the first light-emitting unit away from the second sub-part on the substrate and the orthographic projection of the sidewall of the second isolation part facing the isolation opening on the substrate; the second distance is the distance between the orthographic projection of the side of the first sub-part corresponding to the second light-emitting unit away from the second sub-part on the substrate and the orthographic projection of the sidewall of the second isolation part facing the isolation opening on the substrate. Preferably, the first distance is greater than or equal to 0.3 μm and less than or equal to 4 μm; Preferably, the first sub-part and the second sub-part are in the same layer and made of the same material; Preferably, the cross-section of the first isolation portion is curved or zigzag-shaped, the cross-section of the first isolation portion is perpendicular to the substrate, and the cross-section of the first isolation portion is parallel to the arrangement direction of the first sub-part and the second sub-part; Preferably, along the thickness direction of the substrate, the depth of the groove-shaped structure is greater than or equal to 0.1 μm and less than or equal to 3 μm.

12. The display panel according to claim 1, characterized in that, The orthographic projection of the surface of the second isolation portion away from the substrate onto the substrate is located within the orthographic projection of the first isolation portion onto the substrate; And / or, the first electrode is electrically connected to the second isolation portion; And / or, the first electrode is in electrical contact with the first isolation portion; And / or, the second isolation portion contacts the second sub-portion; And / or, the first isolation portion includes a conductive material; And / or, the first isolation portion includes metal; And / or, the first isolation portion comprises titanium metal; And / or, the second isolation portion includes a conductive material; And / or, the second isolation portion includes metal; And / or, the second isolation portion comprises aluminum metal; And / or, at least a portion of the material of the second isolation portion has weaker antioxidant properties than the material of the first isolation portion; And / or, at least a portion of the material of the second isolation portion has weaker corrosion resistance than the material of the first isolation portion; And / or, the thickness of the second isolation portion is greater than the thickness of the first isolation portion; And / or, at least a portion of the material of the second isolation portion has a higher conductivity than the material of the first isolation portion; And / or, the isolation opening includes a first opening and a second opening arranged and connected along the thickness direction of the substrate, wherein the first sub-part surrounds to form the first opening, and the second isolation part surrounds to form the second opening.

13. The display panel according to claim 1, characterized in that, The light-emitting unit further includes a second electrode and a light-emitting layer stacked sequentially along a direction away from the substrate, wherein the first electrode is located on the side of the light-emitting layer away from the substrate; Preferably, the light-emitting layer extends to the sidewall of the second isolation portion facing the isolation opening; Preferably, the second isolation portion includes: a first isolation sub-portion and a second isolation sub-portion; The second isolation sub-part is located between the first isolation sub-part and the substrate; The light-emitting layer extends to the sidewall of the second isolation sub-part facing the isolation opening; Preferably, the second isolation section further includes: a third isolation subsection; The third isolation sub-section is located between the second isolation sub-section and the substrate; And / or, the light-emitting layer extends from the second isolation sub-part toward the sidewall of the isolation opening to the first isolation sub-part toward the sidewall of the isolation opening; Preferably, the orthographic projection of the second electrode on the substrate is outside the orthographic projection of the second sub-part on the substrate; Preferably, the orthographic projection of the second electrode on the substrate overlaps with the orthographic projection of the second isolation portion on the substrate; Preferably, the first electrodes of the plurality of light-emitting units are electrically connected through the isolation structure.

14. The display panel according to claim 13, characterized in that, The display panel further includes a pixel defining layer, the pixel defining layer including pixel openings that expose at least a portion of the second electrode; the pixel openings are in communication with the corresponding isolation openings; Preferably, the isolation structure is located on the side of the pixel defining layer away from the substrate; or, the pixel defining layer is provided with a clearance opening, and the isolation structure is located in the clearance opening. Preferably, the side of the second electrode exposed by the pixel opening away from the substrate includes a plane; Preferably, at least a portion of the second electrode is located between the pixel defining layer and the substrate; Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate; Preferably, at least a portion of the light-emitting layer and at least a portion of the first electrode are located within the isolation opening.

15. The display panel according to claim 1, characterized in that, The display panel further includes a first encapsulation layer located on the side of the light-emitting unit away from the substrate, and the first encapsulation layer includes a plurality of encapsulation units spaced apart. Preferably, at least a portion of the packaging unit extends from the sidewall of the isolation structure toward the isolation opening to the side of the first sub-part away from the substrate; Preferably, the packaging units are spaced apart on the side of the first isolation portion away from the substrate.

16. The display panel according to claim 15, characterized in that, The edge of the packaging unit is located on the side of the first isolation portion away from the substrate, and there is a second gap between it and the side of the first sub-part away from the substrate; Preferably, the display panel further includes a second encapsulation layer located on the side of the first encapsulation layer away from the substrate; Preferably, the second encapsulation layer fills the second gap; Preferably, the first encapsulation layer comprises an inorganic material. Preferably, the second encapsulation layer comprises an organic material; Preferably, the display panel further includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate; Preferably, the third encapsulation layer comprises an inorganic material.

17. A display panel, characterized in that, include: substrate; An isolation structure is located on the substrate, the isolation structure enclosing an isolation opening, the isolation structure including a second isolation portion and a first isolation portion sequentially stacked along a direction away from the substrate, the first isolation portion including a first sub-portion and a second sub-portion, the first sub-portion being located between the second sub-portion and the isolation opening; along the thickness direction of the substrate, the distance between the side of the first sub-portion away from the second sub-portion and the substrate is greater than the distance between the second sub-portion and the substrate; the second isolation portion includes a second isolation sub-portion and a first isolation sub-portion sequentially stacked along a direction away from the substrate; The light-emitting unit includes a first electrode, at least a portion of which is located within the isolation opening, and the first electrode extends through a second isolation sub-part toward the sidewall of the isolation opening.

18. A method for manufacturing a display panel, characterized in that, The method includes: Provide substrate; An isolation structure is formed on the substrate, the isolation structure enclosing an isolation opening, the isolation structure including a second isolation portion and a first isolation portion stacked sequentially in a direction away from the substrate, the first isolation portion including a first sub-part and a second sub-part, the first sub-part being located between the second sub-part and the isolation opening; along the thickness direction of the substrate, the distance between the side of the first sub-part away from the second sub-part and the substrate is greater than the distance between the second sub-part and the substrate; At least a portion of the film layer of the light-emitting unit is formed within the isolation opening. The at least portion of the film layer of the light-emitting unit includes at least a portion of the first electrode, at least a portion of which is located within the isolation opening. The first electrode extends through the second isolation portion toward the sidewall of the isolation opening to the side of the second isolation portion away from the substrate.

19. The method for manufacturing a display panel according to claim 18, characterized in that, The step of forming an isolation structure on the substrate includes: A second isolation portion is formed on the substrate, and the second isolation portion encloses a second opening; A protective layer is formed on the substrate, at least a portion of the protective layer is located at the second opening, the protective layer is provided with a third opening, at least a portion of the orthographic projection of the third opening on the substrate is located outside the orthographic projection of the second opening on the substrate, and the orthographic projection of the third opening on the substrate and the orthographic projection of the second isolation portion on the substrate overlap. The first isolation portion is formed on the side of the second isolation portion away from the substrate. At least a portion of the first isolation portion is located in the third opening. The first isolation portion surrounds the first opening. The first opening and the corresponding second opening are in communication to form the isolation opening. The isolation opening includes a first isolation opening and a second isolation opening, and the step of forming at least a portion of the film layer of the light-emitting unit within the isolation opening includes: Remove the protective layer inside the first isolation opening, and retain the protective layer inside the second isolation opening; At least a portion of the film layer of the first light-emitting unit is formed within the first isolation opening, and a corresponding encapsulation unit is formed on the side of the first light-emitting unit away from the substrate. The first electrode of the first light-emitting unit extends from the first isolation portion toward the sidewall of the first isolation opening to the side of the second isolation portion away from the substrate. Remove the protective layer within the second isolation opening; At least a portion of the film layer of the second light-emitting unit is formed within the second isolation opening, and a corresponding encapsulation unit is formed on the side of the second light-emitting unit away from the substrate. The first electrode of the second light-emitting unit extends through the first isolation portion toward the sidewall of the second isolation opening to the side of the second isolation portion away from the substrate. Preferably, forming the first isolation portion on the side of the second isolation portion away from the substrate includes: A first insulating material layer is formed on the side of the protective layer away from the substrate and within the third opening; Removing the protective layer within the first isolation opening and retaining the protective layer within the second isolation opening includes: Remove the first isolation material layer and the protective layer corresponding to the first isolation opening, and retain the first isolation material layer corresponding to the second isolation opening and the third opening, as well as the protective layer inside the second isolation opening; Removing the protective layer within the second isolation opening includes: Remove the first isolation material layer and the protective layer corresponding to the second isolation opening, and retain the first isolation material layer corresponding to the third opening to form the first isolation portion; Preferably, at least a portion of the film layer forming the light-emitting unit within the isolation opening includes: a first electrode and a light-emitting layer forming the light-emitting unit within the isolation opening; Preferably, along the thickness direction of the substrate, the distance between the protective layer and the substrate on the side away from the substrate is greater than the distance between the second isolation portion and the substrate on the side away from the substrate; Preferably, the first electrode extends through the sidewall of the second isolation portion toward the isolation opening to the first gap between the second isolation portion and the first sub-part on the side away from the substrate; Preferably, there is no light-emitting layer between the protective layer and the substrate; Preferably, before forming the isolation structure on the substrate, the method further includes: The second electrode of the light-emitting unit is formed on the substrate.

20. An electronic device, characterized in that, The electronic device includes a display panel as described in any one of claims 1-17, or a display panel prepared by the method for preparing a display panel as described in claim 18 or 19.

Images