Display panel, display device and manufacturing method of display panel

Abstract

The embodiment of the invention provides a display panel, a display device and a manufacturing method of the display panel. The display panel comprises a substrate; the isolation structure is arranged on the substrate, and an isolation opening is defined by the isolation structure; the light-emitting unit comprises a light-emitting structure arranged in the isolation opening and a first electrode located on the side, away from the substrate, of the light-emitting structure, and the first electrode comprises a middle part and an edge part connected to the peripheral side of the middle part; wherein the edge part is in contact connection with the isolation structure, the edge part extends in the direction away from the substrate, the edge part comprises a first segment and a second segment which are distributed on the peripheral side of the middle part, and the first segment and the second segment are arranged in the direction away from the substrate. The distance between the end, deviating from the substrate, of the first segment and the edge of the light-emitting functional layer is larger than the distance between the end, deviating from the substrate, of the second segment and the edge of the light-emitting functional layer, and the use performance of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current display products needs to be improved. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, aiming to improve the performance of the display panel.

[0005] A first aspect of the present application provides a display panel, comprising: a substrate; an isolation structure, arranged on the substrate, the isolation structure enclosing an isolation opening; a light-emitting unit, comprising a light-emitting functional layer at least partially arranged in the isolation opening and a first electrode located on the side of the light-emitting functional layer away from the substrate, the first electrode comprising a middle portion and an edge portion connected to the peripheral side of the middle portion; wherein the edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate, the edge portion comprises a first segment and a second segment distributed on the peripheral side of the middle portion, and along the direction away from the substrate, the distance between the end of the first segment away from the substrate and the edge of the light-emitting functional layer is greater than the distance between the end of the second segment away from the substrate and the edge of the light-emitting functional layer.

[0006] According to an embodiment of the present application, the isolation structure has a side wall facing the isolation opening, and the thickness of the first segment along the direction away from the side wall is equal to the thickness of the second segment along the direction away from the side wall; or, the absolute value of the thickness difference between the first segment and the second segment along the direction away from the side wall is less than or equal to 5 nanometers; and / or, the thickness of the first segment and the second segment along the direction away from the side wall is less than the thickness of the middle portion along the substrate thickness direction.

[0007] According to an embodiment of the present application, the isolation structure includes a conductive material, and the first segment and the second segment are electrically connected to the isolation structure.

[0008] According to an embodiment of the present application, a contact length between the first segment and the isolation structure along a direction away from the substrate is greater than a contact length between the second segment and the isolation structure along a direction away from the substrate.

[0009] According to an embodiment of the present application, along the thickness direction of the substrate, the spacing between the end of the second segment facing away from the substrate and the edge of the light-emitting functional layer is 50% to 70% of the spacing between the end of the first segment facing away from the substrate and the edge of the light-emitting functional layer; and / or, along the thickness direction of the substrate, the spacing between the edge of the light-emitting functional layer close to the first segment and the substrate is equal to the spacing between the edge of the light-emitting functional layer close to the second segment and the substrate, or the absolute value of the difference between the spacing between the edge of the light-emitting functional layer close to the first segment and the substrate and the spacing between the edge of the light-emitting functional layer close to the second segment and the substrate is less than or equal to 5 nanometers.

[0010] According to an embodiment of the present application, the isolation structure includes a first sublayer and a second sublayer located on a side of the first sublayer facing away from the substrate, and the orthographic projection of the side of the first sublayer away from the substrate on the substrate is located within the orthographic projection of the second sublayer on the substrate.

[0011] According to an embodiment of the present application, the light-emitting functional layer is in contact with the first sublayer.

[0012] According to an embodiment of the present application, the first segment contacts the first sublayer; and the second segment contacts the first sublayer.

[0013] According to an embodiment of the present application, the distance between an end of the first segment facing away from the substrate and a side of the first sublayer facing the substrate is greater than the distance between an end of the second segment facing away from the substrate and a side of the first sublayer facing the substrate.

[0014] According to an embodiment of the present application, the distance between the end of the first segment facing away from the substrate and the side of the first sublayer facing the substrate is 10% to 90% of the distance between the side of the first sublayer facing away from the substrate and the side of the first sublayer facing the substrate.

[0015] According to an embodiment of the present application, the isolation structure further includes a third sublayer located on the side of the first sublayer facing the substrate, and the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the third sublayer on the substrate.

[0016] According to an embodiment of the present application, the light-emitting functional layer is in contact with the first sublayer and the third sublayer.

[0017] According to an embodiment of the present application, the first sublayer and the first electrode are electrically connected.

[0018] According to an embodiment of the present application, the display panel includes a plurality of light-emitting units, the plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit having different light-emitting colors, there are a plurality of isolation openings, the plurality of isolation openings include a first isolation opening and a second isolation opening, at least a portion of the first light-emitting unit is located in the first isolation opening, and at least a portion of the second light-emitting unit is located in the second isolation opening; the first segment of the first electrode located in the first isolation opening is located on one side of the middle portion along the first direction, and the first segment of the first electrode located in the second isolation opening is located on one side of the middle portion along the first direction; or, the first segment of the first electrode located in the first isolation opening is located on one side of the middle portion along the first direction, and the first segment of the first electrode located in the second isolation opening is located on one side of the middle portion along the second direction, and the first direction and the second direction are arranged to intersect.

[0019] According to an embodiment of the present application, the plurality of light-emitting units further include a third light-emitting unit emitting light of a different color from that of the first light-emitting unit and the second light-emitting unit, the plurality of isolation openings further include a third isolation opening, at least a portion of the third light-emitting unit is located in the third isolation opening, the first segment of the first electrode located in the third isolation opening is located on one side of the middle portion along the first direction; or, the first segment of the first electrode located in the third isolation opening is located on one side of the middle portion along the second direction; or, the first segment of the first electrode located in the third isolation opening is located on one side of the middle portion along the third direction; any two of the first direction, the second direction and the third direction are arranged to intersect.

[0020] According to an embodiment of the present application, a length of a first segment in at least one isolation opening along the circumferential direction of the middle portion is 0.2 to 1 times a length of a second segment along the circumferential direction of the middle portion.

[0021] According to an embodiment of the present application, the middle portion of at least one isolation opening has an orthographic projection on the substrate as a polygonal structure, the first segment is connected to at least one side of the middle portion, and the second segment is connected to at least one side of the middle portion.

[0022] According to an embodiment of the present application, an orthographic projection of a middle portion in at least one isolation opening on the substrate is a hexagonal structure.

[0023] According to an embodiment of the present application, the first segment is connected to one side of the middle portion, and the second segment is connected to the other five side edges of the middle portion.

[0024] According to an embodiment of the present application, a middle portion of at least one isolation opening has an orthographic projection on the substrate that is a rectangle.

[0025] According to an embodiment of the present application, the first segment is connected to one side of the middle portion, and the second segment is connected to the other three sides of the middle portion; or, the first segment is connected to two adjacent sides of the middle portion, and the second segment is connected to the other two sides of the middle portion.

[0026] According to an embodiment of the present application, the middle portion includes a first middle sub-portion and a second middle sub-portion stacked in a direction away from or close to the substrate; the first middle sub-portion and the first segment are arranged on the same layer, and the second middle sub-portion and the second segment are arranged on the same layer.

[0027] According to an embodiment of the present application, the light-emitting unit further includes a second electrode, and the second electrode is arranged on a side of the light-emitting functional layer facing the substrate.

[0028] According to an embodiment of the present application, the display panel further includes a first encapsulation layer, and the first encapsulation layer is disposed on a side of the light emitting unit facing away from the substrate.

[0029] According to an embodiment of the present application, the first encapsulation layer includes a plurality of first encapsulation portions that are spaced apart from each other, and the first encapsulation portions extend through the isolation structure toward the sidewall of the isolation opening to a side of the isolation structure that is away from the substrate.

[0030] According to an embodiment of the present application, a gap exists between the first encapsulation portion and a side of the isolation structure facing away from the substrate.

[0031] According to an embodiment of the present application, the display panel further includes a second encapsulation layer, which is disposed on a side of the first encapsulation layer facing away from the substrate, and the second encapsulation layer fills the gap.

[0032] According to an embodiment of the present application, the display panel further includes a third encapsulation layer, and the third encapsulation layer is disposed on a side of the second encapsulation layer facing away from the substrate.

[0033] The first aspect of the present application also proposes a display panel, comprising: a substrate; an isolation structure, arranged on the substrate, the isolation structure enclosing an isolation opening; a light-emitting unit, comprising a light-emitting functional layer at least partially arranged in the isolation opening and a first electrode located on the side of the light-emitting functional layer away from the substrate, the first electrode comprising a middle portion and an edge portion connected to the peripheral side of the middle portion; wherein at least a portion of the edge portion is arranged on the side wall of the isolation structure facing the isolation opening, and the edge portion is extended in a direction away from the substrate, the edge portion comprises a first segment and a second segment distributed on the peripheral side of the middle portion, and along the thickness direction of the substrate, the spacing between the end of the first segment away from the substrate and the substrate is greater than the spacing between the end of the second segment away from the substrate and the substrate.

[0034] The first aspect of the present application also proposes a display panel, comprising: a substrate; an isolation structure, arranged on the substrate, the isolation structure enclosing an isolation opening; a light-emitting unit, comprising a light-emitting functional layer at least partially arranged in the isolation opening and a first electrode located on the side of the light-emitting functional layer away from the substrate, the first electrode comprising a middle portion and an edge portion connected to the peripheral side of the middle portion; wherein the edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate, the edge portion comprises a first segment and a second segment distributed on the peripheral side of the middle portion, and the contact length of the first segment with the isolation structure in the direction away from the substrate is greater than the contact length of the second segment with the isolation structure in the direction away from the substrate.

[0035] According to an embodiment of the present application, the isolation structure has a sidewall facing the isolation opening, and a contact length between the first segment and the sidewall in a direction away from the substrate is greater than a contact length between the second segment and the sidewall in a direction away from the substrate.

[0036] According to an embodiment of the present application, the isolation structure has a side wall facing the isolation opening, and the thickness of the first segment along the direction away from the side wall is equal to the thickness of the second segment along the direction away from the side wall; or, the absolute value of the thickness difference between the first segment and the second segment along the direction away from the side wall is less than or equal to 5 nanometers; and / or, the thickness of the first segment and the second segment along the direction away from the side wall is less than the thickness of the middle portion along the substrate thickness direction.

[0037] The first aspect embodiment of the present application also provides a display panel, including: a substrate; an isolation structure, arranged on the substrate, the isolation structure encloses an isolation opening, the isolation structure includes a first sublayer and a second sublayer located on the side of the first sublayer away from the substrate; a light-emitting unit, including a light-emitting functional layer at least partially arranged in the isolation opening and a first electrode located on the side of the light-emitting functional layer away from the substrate, the first electrode including a middle portion and an edge portion connected to the peripheral side of the middle portion; wherein the edge portion extends in a direction away from the substrate and is arranged in contact with the first sublayer, and along the thickness direction of the substrate, the spacing between one end of the edge portion away from the substrate and the side of the first sublayer facing the substrate is 10% to 90% of the spacing between the side of the first sublayer away from the substrate and the side of the first sublayer facing the substrate.

[0038] A second aspect of the present application provides a display device, comprising the display panel in any one of the embodiments of the first aspect.

[0039] A third aspect of the present application provides a method for manufacturing a display panel, including:

[0040] An isolation structure is formed on the substrate, and the isolation structure surrounds an isolation opening.

[0041] A light-emitting functional layer and a first electrode of the light-emitting unit are formed in the isolation opening, wherein the first electrode includes a middle portion and an edge portion connected to the peripheral side of the middle portion, wherein the edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate, and the edge portion includes a first segment and a second segment distributed on the peripheral side of the middle portion, and along the direction away from the substrate, the spacing between an end of the first segment away from the substrate and the edge of the light-emitting functional layer is greater than the spacing between an end of the second segment away from the substrate and the edge of the light-emitting functional layer, and / or the spacing between an end of the first segment away from the substrate and the substrate is greater than the spacing between an end of the second segment away from the substrate and the substrate, and / or the contact length of the first segment with the isolation structure along the direction away from the substrate is greater than the contact length of the second segment with the isolation structure along the direction away from the substrate.

[0042] According to an embodiment of the present application, the step of forming the first electrode through the isolation opening includes:

[0043] The central axis of the nozzle of the evaporation source is arranged to intersect with the thickness direction of the substrate;

[0044] Vapor depositing a first electrode material layer, the first electrode material layer is used to form a first segment, a middle portion and a second segment;

[0045] Alternatively, the middle portion includes a first middle sub-portion and a second middle sub-portion stacked in a direction away from or close to the substrate, and the step of isolating the opening to form the first electrode includes:

[0046] Depositing a first electrode material layer at a first deposition angle, wherein the first electrode material layer is used to form a first segment and a first middle sub-section;

[0047] The second electrode material layer is evaporated at a second evaporation angle, and the second electrode material layer is used to form a second segment and a second middle sub-section; the first evaporation angle and the second evaporation angle are different.

[0048] In an embodiment of the present application, the first electrode is arranged on the side of the light-emitting functional layer away from the substrate, and the first electrode can protect the light-emitting functional layer. The edge portion is in contact with the isolation structure, thereby improving the protective effect of the first electrode on the light-emitting functional layer, and the edge portion and the isolation structure can transmit electrical signals. The edge portion extends in a direction away from the substrate, thereby increasing the length of at least part of the edge portion in the direction away from the substrate, and in the subsequent etching process, the probability of the edge portion being damaged by etching can be reduced. For example, the first segment has a better ability to resist etching damage, reducing the risk of both the first segment and the second segment being damaged by etching, thereby disconnecting the isolation structure or causing excessive lap impedance, thereby improving the performance of the display panel. The lap area of ​​the first electrode and the isolation structure is increased, the lap impedance is reduced, and the display effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0050] Figure 1a is a schematic diagram of a cross-sectional structure of a display panel provided in an embodiment of the present application;

[0051] Figure 1b is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0052] Figure 1c is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0053] Figure 2 is a schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0054] Figure 3 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0055] Figure 4 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0056] Figure 5 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0057] Figure 6 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0058] Figure 7 is a schematic diagram of a top view structure of another display panel provided in an embodiment of the present application;

[0059] Figure 8 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0060] Figure 9a is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0061] Figure 9b is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0062] Fig.10a is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0063] Fig.10b is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0064] Fig.11 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0065] Figure 12 to Figure 14b It is a schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application.

[0066] Explanation of the reference numerals: 100, substrate; 200, isolation structure; 201, side wall; 210, isolation opening; 211, first isolation opening; 212, second isolation opening; 213, third isolation opening; 220, first sublayer; 230, second sublayer; 240, third sublayer; 300, light-emitting unit; 310, light-emitting functional layer; 320, first electrode; 321, middle part; 321a, first middle subpart; 321b, second middle subpart; 322, edge part; 322a, first segment; 322b, second segment; 330, second electrode; 600, first encapsulation layer; 610, first encapsulation part; 620, second encapsulation layer; 630, third encapsulation layer; 700, evaporation source; 800, pixel defining part; 810, pixel opening; H, opening direction; X, first direction; Y, second direction; Z, third direction; N, thickness direction. DETAILED DESCRIPTION

[0067] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0068] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0069] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0070] like Figure 1a , Figure 1b and Figure 1c As shown, a display panel provided in an embodiment of the first aspect of the present application includes: a substrate 100 , an isolation structure 200 and a light-emitting unit 300 .

[0071] The isolation structure 200 is arranged on one side of the substrate 100, and the isolation structure 200 encloses an isolation opening 210; the light-emitting unit 300 includes a light-emitting functional layer 310 at least partially arranged in the isolation opening 210 and a first electrode 320 located on the side of the light-emitting functional layer 310 away from the substrate 100, and the first electrode 320 includes a middle portion 321 and an edge portion 322 connected to the peripheral side of the middle portion 321; wherein the edge portion 322 is in contact with the isolation structure 200, and the edge portion 322 is extended in a direction away from the substrate 100, and the edge portion 322 includes a first segment 322a and a second segment 322b distributed on the peripheral side of the middle portion 321, and along the direction away from the substrate 100, the distance A between the end of the first segment 322a away from the substrate 100 and the edge of the light-emitting functional layer 310 is greater than the distance a between the end of the second segment 322b away from the substrate 100 and the edge of the light-emitting functional layer 310.

[0072] The first electrode 320 is arranged on the side of the light-emitting functional layer 310 away from the substrate 100. The first electrode 320 can protect the light-emitting functional layer 310 and at least part of the sidewall 201 of the isolation structure 200, and has the function of an etching barrier layer. In the process of manufacturing the subsequent light-emitting unit 300, over-etching can be prevented from causing pixel damage. By increasing the length of at least part of the edge portion 322 (for example, the first segment 322a), the protection area of ​​the edge portion 322 having the function of an etching barrier layer can be increased, and in the subsequent etching process, over-etching can be prevented from causing pixel damage. The edge portion 322 of the first electrode 320 is in contact with the isolation structure 200 and can transmit electrical signals. By increasing the length of at least part of the edge portion 322 (for example, the first segment 322a), the effective overlap area of ​​the first electrode 320 and the isolation structure 200 can be increased, and the overlap resistance can be reduced, thereby achieving an improved display effect.

[0073] In this embodiment, the first electrode 320 is arranged on the side of the light-emitting functional layer 310 away from the substrate 100, and the first electrode 320 can protect the light-emitting functional layer 310. The edge portion 322 is in contact with the isolation structure 200 so that electrical signals can be transmitted between the edge portion 322 and the isolation structure 200. The distance between the end of the first segment 322a away from the substrate 100 and the edge of the light-emitting functional layer 310 is greater than the distance between the end of the second segment 322b away from the substrate 100 and the edge of the light-emitting functional layer 310, thereby increasing the length of the first segment 322a in the direction away from the substrate 100. In the subsequent etching process, the probability of the first segment 322a being damaged by etching can be reduced, and the risk of both the first segment 322a and the second segment 322b being damaged by etching, thereby reducing the risk of disconnection between the first electrode 320 and the isolation structure 200 or excessive lap impedance, thereby improving the performance of the display panel.

[0074] like Figure 1b As shown, the distance between the end of the first segment 322a facing away from the substrate 100 and the edge of the light-emitting functional layer 310 is A, and the distance between the end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310 is a.

[0075] like Figure 1a As shown, in some optional embodiments, the isolation structure 200 has a sidewall 201 facing the isolation opening 210 , and the thickness of the first segment 322 a along the direction away from the sidewall 201 is equal to the thickness of the second segment 322 b along the direction away from the sidewall 201 .

[0076] In these optional embodiments, the first segment 322a and the second segment 322b are formed by extending from the circumferential side of the middle portion 321 in a direction away from the substrate 100, so that the first segment 322a and the second segment 322b have the same film thickness, that is, the thickness of the first segment 322a in a direction away from the side wall 201 is equal to the thickness of the second segment 322b in a direction away from the side wall 201. The first segment 322a and the second segment 322b can be formed by evaporation of the material of the first electrode 320, and the first segment 322a and the second segment 322b formed after evaporation have the same thickness, which is conducive to simplifying the process.

[0077] In other optional embodiments, the absolute value of the thickness difference between the first segment 322a and the second segment 322b in the direction away from the side wall 201 is less than or equal to 5 nanometers, and the thickness error between the first segment 322a and the second segment 322b in the direction away from the side wall 201 is within 5 nanometers, that is, approximately equal.

[0078] In some other optional embodiments, the thickness of the first segment 322a and the second segment 322b in the direction away from the sidewall 201 is less than the thickness of the middle portion 321 in the thickness direction N of the substrate 100. The middle portion 321 is at the bottom of the isolation opening 210 and thus has a thicker thickness, while the first segment 322a and the second segment 322b are at least partially located on the sidewall 201 of the isolation structure 200, so that the thickness of the first segment 322a and the second segment 322b in the direction away from the sidewall 201 is less than the thickness of the middle portion 321 in the thickness direction N of the substrate 100.

[0079] like Figure 1a As shown, in some optional embodiments, the isolation structure 200 includes a conductive material, and the first segment 322 a and the second segment 322 b are electrically connected to the isolation structure 200 .

[0080] In these optional embodiments, the first segment 322a and the second segment 322b are electrically connected to the isolation structure 200, and the first electrodes 320 of the light-emitting units 300 in the plurality of isolation openings 210 can be electrically connected through the isolation structure 200, that is, the electrical signal is conducted. Optionally, the first electrode 320 can be a cathode.

[0081] Optional, such as Figure 1aAs shown, the contact length of the first segment 322a with the isolation structure 200 in the direction away from the substrate 100 is greater than the contact length of the second segment 322b with the isolation structure 200 in the direction away from the substrate 100. In the subsequent etching process, the first electrode 320 will be partially etched to shorten the edge portion 322, thereby increasing the contact resistance between the first electrode 320 and the isolation structure 200, affecting the display effect. The contact length of the first segment 322a with the isolation structure 200 is set to be longer, thereby reducing the contact resistance between the first electrode 320 and the isolation structure 200 and improving the display effect; on the other hand, the probability of the first segment 322a being damaged by etching can be reduced, ensuring that the first electrode 320 is in contact and electrically connected with the isolation structure 200, while protecting the light-emitting functional layer 310 and reducing the probability of damage to the light-emitting functional layer 310.

[0082] In some optional embodiments, along the thickness direction N of the substrate 100 , the distance between the end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310 is 50% to 70% of the distance between the end of the first segment 322a facing away from the substrate 100 and the edge of the light-emitting functional layer 310 .

[0083] In these optional embodiments, the distance between the end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310 is 50%, 55%, 60%, 65%, 70%, etc. of the distance between the end of the first segment 322a facing away from the substrate 100 and the edge of the light-emitting functional layer 310.

[0084] In some other optional embodiments, along the thickness direction N of the substrate 100, the distance between the edge of the light-emitting functional layer 310 close to the first segment 322a and the substrate 100 is equal to the distance between the edge of the light-emitting functional layer 310 close to the second segment 322b and the substrate 100, or, the absolute value of the difference between the distance between the edge of the light-emitting functional layer 310 close to the first segment 322a and the substrate 100 and the distance between the edge of the light-emitting functional layer 310 close to the second segment 322b and the substrate 100 is less than or equal to 5 nanometers, that is, within the error range of 5 nanometers, that is, approximately equal.

[0085] like Figure 1a and Figure 1c As shown, in some optional embodiments, the isolation structure 200 includes a first sublayer 220 and a second sublayer 230 located on the side of the first sublayer 220 facing away from the substrate 100, and the orthographic projection of the side of the first sublayer 220 away from the substrate on the substrate 100 is located within the orthographic projection of the second sublayer 230 on the substrate 100.

[0086] Exemplarily, the first sublayer 220 and the first electrode 320 are electrically connected to each other.

[0087] In these optional embodiments, the first electrode 320 is in contact with the first sublayer 220 to achieve electrical connection, the orthographic projection of the side of the first sublayer 220 away from the substrate on the substrate 100 is located within the orthographic projection of the second sublayer 230 on the substrate 100, and the orthographic projection size of the side of the first sublayer 220 away from the substrate on the substrate 100 is smaller than the orthographic projection size of the second sublayer 230 on the substrate 100, so as to form a concave under the second sublayer 230. During the preparation process of the light-emitting functional layer 310 and the first electrode 320, the materials of the light-emitting functional layer 310 and the first electrode 320 can be separated into independent light-emitting units 300 by the isolation structure 200, and the precision mask evaporation process can be omitted, thereby reducing the preparation cost. The cross section of the isolation structure 200 along the plane parallel to the thickness direction N of the substrate 100 can be T-shaped.

[0088] The specific design of the isolation structure 200 can refer to existing patents, such as application numbers CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072, which record relevant contents of the isolation structure 200 (or partition structure or isolation column).

[0089] Optionally, the light-emitting functional layer 310 is disposed in contact with the first sublayer 220. For example, the light-emitting functional layer 310 close to the first segment 322a is disposed in contact with the first sublayer 220. For example, the light-emitting functional layer 310 close to the second segment 322b is disposed in contact with the first sublayer 220.

[0090] Optionally, the distance between the end of the first segment 322a facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is greater than the distance between the end of the second segment 322b facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100, thereby increasing the contact area between the first segment 322a and the first sublayer 220 and reducing the contact resistance between the first segment 322a and the first sublayer 220.

[0091] Optionally, the distance between the end of the first segment 322a facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 10% to 90% of the distance between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100. The first segment 322a extends along the first sublayer 220 facing away from the substrate 100, and the distance between the end of the first segment 322a facing away from the substrate 100 and the substrate 100 is 10%, 20%, 40%, 60%, 80%, 90%, etc. of the distance between the end of the first sublayer 220 facing away from the substrate 100 and the substrate 100. For example, the distance between the end of the first segment 322a facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 46% to 90% of the distance between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100.

[0092] For example, the distance between the end of the second segment 322 b facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 5% to 45% of the distance between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 .

[0093] The first sublayer 220 may include a metal, such as aluminum. The second sublayer 230 may include a metal, such as titanium. The conductivity of the first sublayer 220 may be greater than the conductivity of the second sublayer 230. The corrosion resistance of the first sublayer 220 may be less than the corrosion resistance of the second sublayer 230. The oxidation resistance of the first sublayer 220 may be weaker than the oxidation resistance of the second sublayer 230.

[0094] Optional, such as Figure 1a As shown, the isolation structure 200 further includes a third sublayer 240 located on the side of the first sublayer 220 facing the substrate 100, and the orthographic projection of the first sublayer 220 on the substrate 100 is located within the orthographic projection of the third sublayer 240 on the substrate 100. The material of the third sublayer 240 may include a metal, such as molybdenum. When etching to form the first sublayer 220, the third sublayer 240 is not easily affected by the etching and can provide better protection for the substrate 100. For example, the orthographic projection area of ​​the first sublayer 220 on the substrate 100 is smaller than the orthographic projection area of ​​the third sublayer 240 on the substrate 100.

[0095] Optionally, the light-emitting functional layer 310 is in contact with the first sublayer 220 and the third sublayer 240. For example, the light-emitting functional layer 310 near the first segment 322a is in contact with the first sublayer 220 and the third sublayer 240. For example, the light-emitting functional layer 310 near the second segment 322b is in contact with the first sublayer 220 and the third sublayer 240.

[0096] The substrate 100 may be a flexible substrate or a rigid substrate. Optionally, the substrate 100 may be made of materials such as glass and polyimide (PI). When the substrate 100 is made of polyimide material, it is a flexible substrate, so that the display panel can be used to manufacture a flexible display panel.

[0097] Optionally, the display panel includes a driving circuit layer, which is arranged between the substrate 100 and the light-emitting layer, and the driving circuit layer is used to drive the light-emitting functional layer 310 to emit light; the driving circuit layer includes a transistor and a storage capacitor. The transistor includes a semiconductor portion, a gate, a source and a drain. Among them, the driving circuit layer can be any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. In this article, "2T1C circuit" refers to a circuit including 2 transistors and 1 capacitor in the circuit, and other "7T1C circuit", "7T2C circuit", "9T1C circuit" and so on are deduced accordingly.

[0098] Optionally, the display panel further includes a pixel definition layer disposed between the isolation structure 200 and the substrate 100 , the pixel definition layer includes a pixel opening 810 enclosed by a pixel defining portion 800 , and at least a portion of the light emitting unit 300 is located in the pixel opening 810 .

[0099] In some optional embodiments, the display panel includes a plurality of light-emitting units 300, the plurality of light-emitting units 300 include a first light-emitting unit and a second light-emitting unit having different light-emitting colors, the isolation opening 210 includes a plurality of isolation openings 210 including a first isolation opening 211 and a second isolation opening 212, at least a portion of the first light-emitting unit is located in the first isolation opening 211, and at least a portion of the second light-emitting unit is located in the second isolation opening 212; the first segment 322a of the first electrode 320 located in the first isolation opening 211 is located on one side of the middle portion 321 along the first direction X, and the first segment 322a of the first electrode 320 located in the second isolation opening 212 is located on one side of the middle portion 321 along the first direction X.

[0100] In these optional embodiments, the first isolation opening 211 and the second isolation opening 212 are both provided with a first electrode 320, the first segment 322a of the first electrode 320 located in the first isolation opening 211 is located on one side of the middle portion 321 along the first direction X, and the first segment 322a of the first electrode 320 located in the second isolation opening 212 is located on one side of the middle portion 321 along the first direction X.

[0101] Optional, such as Figure 2 As shown, the first segment 322a in the first isolation opening 211 and the second isolation opening 212 is located at the same side of the middle portion 321 along the first direction X; or Figure 3As shown, the first segment 322a in the first isolation opening 211 is located on one side of the middle portion 321 along the first direction X, and the first segment 322a in the second isolation opening 212 is located on the other side of the middle portion 321 along the first direction X, and the two directions are opposite. The orthographic projection shapes of the first isolation opening 211 and the second isolation opening 212 on the substrate 100 can be the same shape or different shapes. In order to better realize the overlapping area between the first electrode 320 and the isolation structure 200, the relative positions of the first segment 322a and the middle portion 321 in the first isolation opening 211 and the second isolation opening 212 can be flexibly adjusted.

[0102] like Figure 4 As shown, in some other optional embodiments, the first segment 322a located at the first isolation opening 211 is located at one side of the middle portion 321 along the first direction X, and the first segment 322a located at the second isolation opening 212 is located at one side of the middle portion 321 along the second direction Y, and the first direction X and the second direction Y are intersected.

[0103] In these optional embodiments, the light-emitting functional layer 310 and the first electrode 320 of the light-emitting unit 300 in the first isolation opening 211 and the light-emitting functional layer 310 and the first electrode 320 of the light-emitting unit 300 in the second isolation opening 212 are formed by batch evaporation, so that the first segment 322a in the first isolation opening 211 and the first segment 322a in the second isolation opening 212 are located on different sides of the middle part 321, that is, when the material of the first electrode 320 is evaporated on the first isolation opening 211, the evaporation angle is the same or different when the material of the first electrode 320 is evaporated on the second isolation opening 212. The orthographic projection shapes of the first isolation opening 211 and the second isolation opening 212 on the substrate 100 can be different shapes, and the evaporation angle can be flexibly adjusted in order to better realize the overlap area between the first electrode 320 and the isolation structure 200. The first direction X and the second direction Y intersect, and the first direction X and the second direction Y are perpendicular to the thickness direction N of the substrate 100.

[0104] like Figure 5As shown, in some optional embodiments, the multiple light-emitting units 300 also include a third light-emitting unit that emits light of a different color from the first light-emitting unit and the second light-emitting unit, the multiple isolation openings 210 also include a third isolation opening 213, at least a portion of the third light-emitting unit is located in the third isolation opening 213, the first segment 322a of the first electrode 320 located in the third isolation opening 213 is located on one side of the middle portion 321 along the first direction X; or, the first segment 322a of the first electrode 320 located in the third isolation opening 213 is located on one side of the middle portion 321 along the second direction Y; or, the first segment 322a of the first electrode 320 located in the third isolation opening 213 is located on one side of the middle portion 321 along the third direction Z; any two of the first direction X, the second direction Y and the third direction Z are arranged to intersect.

[0105] In these optional embodiments, the light-emitting functional layer 310 and the first electrode 320 of the light-emitting unit 300 in the first isolation opening 211, the light-emitting functional layer 310 and the first electrode 320 of the light-emitting unit 300 in the second isolation opening 212, and the light-emitting functional layer 310 and the first electrode 320 of the light-emitting unit 300 in the third isolation opening 213 are formed by batch evaporation. The first segment 322a in the third isolation opening 213 is located on one side of the first direction X of the middle part 321, that is, the first segment 322a in the third isolation opening 213 is in the same or opposite direction to the first segment 322a in the first isolation opening 211 and the middle part 321. The first segment 322a in the third isolation opening 213 is located on one side of the second direction Y of the middle part 321, that is, the first segment 322a in the third isolation opening 213 is in the same or opposite direction to the first segment 322a in the second isolation opening 212 and the middle part 321. Alternatively, the first segment 322a in the third isolation opening 213 is located on one side of the middle portion 321 in the third direction Z, that is, the first segment 322a in the third isolation opening 213 is different from the first segment 322a in the first isolation opening 211 and the first segment 322a in the second isolation opening 212 and the middle portion 321 in the direction relationship. The orthographic projection shapes of the first isolation opening 211, the second isolation opening 212 and the third isolation opening 213 on the substrate 100 can be the same shape or different shapes. In order to better realize the overlap area between the first electrode 320 and the isolation structure 200, the evaporation angles can be flexibly adjusted to be the same or different. The first direction X, the second direction Y and the third direction Z intersect, and the first direction X, the second direction Y and the third direction Z are all perpendicular to the thickness direction N of the substrate 100.

[0106] In some optional embodiments, the length of the first segment 322 a in at least one isolation opening 210 along the circumferential direction of the middle portion 321 is 0.2 to 1 times the length of the second segment 322 b along the circumferential direction of the middle portion 321 .

[0107] In these optional embodiments, the first segment 322a and the second segment 322b are distributed on the circumferential side of the middle portion 321, and an extension length of the first segment 322a in at least one isolation opening 210 along the circumferential direction of the middle portion 321 is 0.2 times, 1 / 3 times, 0.5 times, 0.8 times, 1 times, etc., of an extension length of the second segment 322b along the circumferential direction of the middle portion 321.

[0108] Optionally, the extension length of the first segment 322a in the plurality of isolation openings 210 along the circumferential direction of the middle portion 321 is 0.2 times, 1 / 3 times, 0.5 times, 0.8 times, 1 times, etc., the extension length of the second segment 322b along the circumferential direction of the middle portion 321 .

[0109] Optional, such as Figure 6 and Figure 7 As shown, the orthographic projection of the middle portion 321 in at least one isolation opening 210 on the substrate 100 is a polygonal structure, the first segment 322 a is connected to at least one side of the middle portion 321 , and the second segment 322 b is connected to at least one side of the middle portion 321 .

[0110] Optional, such as Figure 6 As shown, the orthographic projection of the middle portion 321 in at least one isolation opening 210 on the substrate 100 is a hexagonal structure, for example, the first segment 322a is connected to one side of the middle portion 321, and the second segment 322b is connected to the other five sides of the middle portion 321. When the orthographic projection of the middle portion 321 on the substrate 100 is a regular hexagon, the extension length of the first segment 322a along the circumference of the middle portion 321 is 0.2 times the extension length of the second segment 322b along the circumference of the middle portion 321.

[0111] Optional, such as Figure 7 As shown, the orthographic projection of the middle portion 321 in at least one isolation opening 210 on the substrate 100 is a rectangle, for example, the first segment 322a is connected to one side of the middle portion 321, and the second segment 322b is connected to the other three sides of the middle portion 321. When the four sides of the rectangle are equal in length, that is, the orthographic projection of the middle portion 321 on the substrate 100 is a square, the extension length of the first segment 322a along the circumference of the middle portion 321 is 1 / 3 of the extension length of the second segment 322b along the circumference of the middle portion 321.

[0112] Optional, such as Figure 7As shown, the orthographic projection of the middle portion 321 on the substrate 100 is a rectangle, the first segment 322a is connected to two adjacent sides of the middle portion 321, and the second segment 322b is connected to the other two sides of the middle portion 321. That is, the extension length of the first segment 322a along the circumference of the middle portion 321 is 1 times the extension length of the second segment 322b along the circumference of the middle portion 321, and the extension lengths of the first segment 322a and the second segment 322b along the circumference of the middle portion 321 are equal.

[0113] Optional, such as Figure 8 As shown, the middle portion 321 includes a first middle sub-portion 321a and a second middle sub-portion 321b stacked in a direction away from or close to the substrate 100; the first middle sub-portion 321a and the first segment 322a are arranged in the same layer, and the second middle sub-portion 321b and the second segment 322b are arranged in the same layer. The first middle sub-portion 321a and the first segment 322a are formed simultaneously in the same evaporation process, and the second middle sub-portion 321b and the second segment 322b are formed simultaneously in the same evaporation process.

[0114] Optional, such as Figure 1a As shown, the light emitting unit 300 further includes a second electrode 330 , and the second electrode 330 is disposed on a side of the light emitting functional layer 310 facing the substrate 100 .

[0115] Optional, such as Figure 1a As shown, the display panel further includes a first encapsulation layer 600 . The first encapsulation layer 600 is disposed on the side of the light emitting unit 300 away from the substrate 100 , thereby encapsulating the light emitting unit 300 .

[0116] Optional, such as Figure 1a As shown, the first packaging layer 600 includes a plurality of first packaging parts 610 arranged at intervals, and the first packaging parts 610 extend through the isolation structure 200 toward the side wall of the isolation opening 210 to the side of the isolation structure 200 away from the substrate 100, thereby improving the packaging effect of the first packaging parts 610.

[0117] Optionally, there is a gap between the first encapsulation portion 610 and a side of the isolation structure 200 facing away from the substrate 100 .

[0118] Optional, such as Figure 1a As shown, the display panel further includes a second encapsulation layer 620, which is disposed on the side of the first encapsulation layer 600 away from the substrate 100, and fills each isolation opening 210 and covers the side of the isolation structure 200 away from the substrate 100. The second encapsulation layer 620 may include an organic material.

[0119] Optionally, the second packaging layer 620 fills each gap to improve the packaging effect.

[0120] Optional, such as Figure 1a As shown, the display panel further includes a third encapsulation layer 630, and the third encapsulation layer 630 is disposed on a side of the second encapsulation layer 620 facing away from the substrate 100. The third encapsulation layer 630 may include an inorganic material.

[0121] like Figure 9a and Figure 9b As shown, the embodiment of the first aspect of the present application further provides a display panel, comprising: a substrate 100, an isolation structure 200 and a light-emitting unit 300, wherein the isolation structure 200 is arranged on one side of the substrate 100, and the isolation structure 200 surrounds and forms an isolation opening 210; the light-emitting unit 300 comprises a light-emitting functional layer 310 arranged at the isolation opening 210 and a first electrode 320 located on a side of the light-emitting functional layer 310 away from the substrate 100, and the first electrode 320 comprises a middle portion 321 and an edge portion 322 connected to the peripheral side of the middle portion 321 , wherein at least a portion of the edge portion 322 is arranged on the side wall 201 of the isolation structure 200 facing the isolation opening 210, and the edge portion 322 is extended in a direction away from the substrate 100, and the edge portion 322 includes a first segment 322a and a second segment 322b distributed on the peripheral side of the middle portion 321, and along the thickness direction N of the substrate 100, the spacing B between the end of the first segment 322a away from the substrate 100 and the substrate 100 is greater than the spacing b between the end of the second segment 322b away from the substrate 100 and the substrate 100.

[0122] In the present embodiment, the first electrode 320 is arranged on the side of the light-emitting functional layer 310 away from the substrate 100. The first electrode 320 can protect the light-emitting functional layer 310. The edge portion 322 is in contact with the isolation structure 200 to enhance the protective effect of the first electrode 320 on the light-emitting functional layer 310, and electrical signals can be transmitted between the edge portion 322 and the isolation structure 200. The edge portion 322 extends in a direction away from the substrate 100, thereby increasing the length of the edge portion 322 in a direction away from the substrate 100. In the subsequent etching process, the probability of the edge portion 322 being damaged by etching can be reduced. The distance between the end of the first segment 322a away from the substrate 100 and the substrate 100 is greater than the distance between the end of the second segment 322b away from the substrate 100 and the substrate 100. Figure 9b “B” in FIG. 1 represents the distance between the end of the first segment 322 a facing away from the substrate 100 and the substrate 100. Figure 9b "b" represents the distance between the end of the second segment 322b away from the substrate 100 and the substrate 100. The first segment 322a has a better ability to resist etching damage, reducing the risk of both the first segment 322a and the second segment 322b being etched and damaged, resulting in a disconnection between the first electrode 320 and the isolation structure 200 or excessive lap impedance, thereby improving the performance of the display panel.

[0123] In some optional embodiments, the configuration between the isolation structure 200 and the first electrode 320 is as described above and will not be repeated herein.

[0124] This embodiment can be combined with some or all of the technical features in the above embodiments, which will not be described in detail here.

[0125] like Figure 1a and Figure 1b As shown, an embodiment of the first aspect of the present application further provides a display panel, comprising: a substrate 100; an isolation structure 200, which is arranged on the substrate 100, and the isolation structure 200 encloses an isolation opening 210; a light-emitting unit 300, comprising a light-emitting functional layer 310 at least partially arranged in the isolation opening 210 and a first electrode 320 located on the side of the light-emitting functional layer 310 away from the substrate 100, the first electrode 320 comprising a middle portion 321 and an edge portion 322 connected to the peripheral side of the middle portion 321; wherein the edge portion 322 contacts the isolation structure 200, and the edge portion 322 is extended in a direction away from the substrate 100, the edge portion 322 comprises a first segment 322a and a second segment 322b distributed on the peripheral side of the middle portion 321, and the contact length of the first segment 322a with the isolation structure 200 in the direction away from the substrate 100 is greater than the contact length of the second segment 322b with the isolation structure 200 in the direction away from the substrate 100.

[0126] In some embodiments, the first electrode 320 will be partially etched to shorten the edge portion 322, thereby increasing the contact resistance between the first electrode 320 and the isolation structure 200, affecting the display effect. In this embodiment, the contact length between the first segment 322a and the isolation structure 200 is set to be longer, thereby reducing the contact resistance between the first electrode 320 and the isolation structure 200 and improving the display effect; on the other hand, the probability of the first segment 322a being damaged by etching can be reduced, ensuring that the first electrode 320 is in electrical contact with the isolation structure 200, and at the same time protecting the light-emitting functional layer 310 and reducing the probability of damage to the light-emitting functional layer 310.

[0127] In some optional embodiments, the isolation structure 200 and the first electrode 320 are arranged as described above and will not be described in detail herein.

[0128] This embodiment can be combined with some or all of the technical features in the above embodiments, which will not be described in detail here.

[0129] like Fig.10a and Fig.10bAs shown, the embodiment of the first aspect of the present application further provides a display panel comprising: a substrate 100; an isolation structure 200, which is disposed on the substrate 100, the isolation structure 200 encloses an isolation opening 210, the isolation structure 200 comprises a first sublayer 220 and a second sublayer 230 located on a side of the first sublayer 220 away from the substrate 100; a light-emitting unit 300, which comprises a light-emitting functional layer 310 at least partially disposed on the isolation opening 210 and a first electrode 310 located on a side of the light-emitting functional layer 310 away from the substrate 100. 20, the first electrode 320 includes a middle portion 321 and an edge portion 322 connected to the peripheral side of the middle portion 321; wherein the edge portion 322 extends in a direction away from the substrate 100 and is arranged in contact with the first sub-layer 220, and along the thickness direction N of the substrate 100, the distance between the end of the edge portion 322 away from the substrate 100 and the side of the first sub-layer 220 facing the substrate 100 is 10% to 90% of the distance between the side of the first sub-layer 220 away from the substrate 100 and the side of the first sub-layer 220 facing the substrate 100.

[0130] Optionally, the distance R between the end of the edge portion 322 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 46% to 90% of the distance r between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100, and specifically can be 46%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, etc.

[0131] Optionally, the spacing R between the end of the edge portion 322 at each position facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 10% to 90% of the spacing r between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100. For example, the spacing between the end of the edge portion 322 at each position facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 46% to 90% of the spacing between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100, and specifically can be 46%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, etc. The spacing R between the ends of the first segment and the second segment facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100 is 10% to 90%, or 46% to 90%, of the spacing r between the side of the first sublayer 220 facing away from the substrate 100 and the side of the first sublayer 220 facing the substrate 100. The end of the first segment facing away from the substrate 100 and the end of the second segment facing away from the substrate 100 are both raised.

[0132] In some optional embodiments, the isolation structure 200, the pixel definition layer, the first encapsulation layer 600, etc. are arranged as described above and are not described in detail here. Optionally, the middle portion includes a first middle sub-portion and a second middle sub-portion stacked in a direction away from or close to the substrate; the first middle sub-portion and the first segment are arranged in the same layer, and the second middle sub-portion and the second segment are arranged in the same layer.

[0133] This embodiment can be combined with some or all of the technical features in the above embodiments, which will not be described in detail here.

[0134] The embodiment of the second aspect of the present application also provides a display device, including the display panel of any of the above-mentioned embodiments of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel of any of the above-mentioned embodiments of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments of the first aspect, which will not be repeated here.

[0135] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0136] The third aspect of the present application also provides a method for manufacturing a display panel, which can be used to prepare the display panel in the above embodiment. Fig.11 As shown, the manufacturing method may include the following steps:

[0137] Step S01: Fig.12 As shown, an isolation structure 200 is formed on a substrate 100 , and the isolation structure 200 surrounds an isolation opening 210 .

[0138] Step S02: Figure 1a , Figure 1b , Figure 9a ,and Figure 9bAs shown, a light-emitting functional layer 310 and a first electrode 320 of a light-emitting unit 300 are formed in the isolation opening 210, and the first electrode 320 includes a middle portion 321 and an edge portion 322 connected to the peripheral side of the middle portion 321, wherein the edge portion 322 is in contact with the isolation structure 200, and the edge portion 322 is extended in a direction away from the substrate 100, and the edge portion 322 includes a first segment 322a and a second segment 322b distributed on the peripheral side of the middle portion 321, and along the direction away from the substrate 100, an end of the first segment 322a away from the substrate 100 is connected to the light-emitting unit 300. The spacing between the edges of the optical functional layer 310 is greater than the spacing between the end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310, and / or, the spacing between the end of the first segment 322a facing away from the substrate 100 and the substrate 100 is greater than the spacing between the end of the second segment 322b facing away from the substrate 100 and the substrate 100, and / or, the contact length of the first segment 322a along the direction away from the substrate 100 with the isolation structure 200 is greater than the contact length of the second segment 322b along the direction away from the substrate 100 with the isolation structure 200.

[0139] In this embodiment, the light-emitting functional layer 310 is evaporated on the substrate 100 with the isolation structure 200, and the material of the light-emitting functional layer 310 is formed in the isolation opening 210. The first electrode 320 is obliquely evaporated on the substrate 100 with the isolation structure 200, and the material of the first electrode 320 is formed in the isolation opening 210 and overlaps with the isolation structure 200. Due to the oblique evaporation of the material of the first electrode 320, the first electrode 320 extends along the direction away from the substrate 100 at different lengths on the isolation structure 200 to form a first segment 322a and a second segment 322b, and the extension length of the first segment 322a is greater than the extension length of the second segment 322b. The first electrode 320 is arranged on the side of the light-emitting functional layer 310 away from the substrate 100, and the first electrode 320 can protect the light-emitting functional layer 310. The edge portion 322 is in contact with the isolation structure 200 to improve the protection effect of the first electrode 320 on the light-emitting functional layer 310, and electrical signals can be transmitted between the edge portion 322 and the isolation structure 200. The edge portion 322 extends in a direction away from the substrate 100 , thereby increasing the length of the edge portion 322 in the direction away from the substrate 100 , and in a subsequent etching process, the probability of the edge portion 322 being damaged by etching can be reduced. The spacing between one end of the first segment 322a away from the substrate 100 and the edge of the light-emitting functional layer 310 is greater than the spacing between one end of the second segment 322b away from the substrate 100 and the edge of the light-emitting functional layer 310, and / or, the spacing between one end of the first segment 322a away from the substrate 100 and the substrate 100 is greater than the spacing between one end of the second segment 322b away from the substrate 100 and the substrate 100, and / or, the contact length of the first segment 322a with the isolation structure 200 along the direction away from the substrate 100 is greater than the contact length of the second segment 322b with the isolation structure 200 along the direction away from the substrate 100, so that the first segment 322a has better resistance to etching damage, reduces the risk of both the first segment 322a and the second segment 322b being etched and damaged and thus disconnected from the isolation structure 200, thereby improving the performance of the display panel.

[0140] In some optional embodiments, the step of forming the first electrode 320 in the isolation opening 210 includes:

[0141] like Fig.13 As shown, the central axis H of the nozzle of the evaporation source 700 is arranged to intersect with the thickness direction N of the substrate 100 .

[0142] The first electrode material layer is evaporated, and the first electrode material layer is used to form the first segment 322a, the middle portion 321, and the second segment 322b. In these optional embodiments, by adjusting the central axis H of the nozzle of the evaporation source 700 and the thickness direction N of the substrate 100 to intersect, thereby forming inclined evaporation, by adjusting the inclination angle of the evaporation source 700, that is, adjusting the angle M between the central axis H of the nozzle and the thickness direction N of the substrate 100, that is, adjusting the evaporation angle, the height of the end of the first segment 322a away from the substrate 100 can be adjusted to form a spacing between the end of the first segment 322a away from the substrate 100 and the edge of the light-emitting functional layer 310 greater than The distance between one end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310, and / or, the distance between one end of the first segment 322a facing away from the substrate 100 and the substrate 100 is greater than the distance between one end of the second segment 322b facing away from the substrate 100 and the substrate 100, and / or, the contact length of the first segment 322a along the direction away from the substrate 100 with the isolation structure 200 is greater than the contact length of the second segment 322b along the direction away from the substrate 100 with the isolation structure 200.

[0143] The light-emitting functional layer 310 and the first electrode 320 (or the first packaging part) and other related film layers corresponding to the target light-emitting unit are formed in each isolation opening 210, and then the light-emitting functional layer 310 and the first electrode 320 (or the first packaging part) and other related film layers corresponding to the target light-emitting unit in each isolation opening other than the target isolation opening are removed. For example, the light-emitting functional layer 310 and the first electrode 320 and the first packaging part 610 and other related film layers corresponding to the first light-emitting unit are formed in each isolation opening 210, and the light-emitting functional layer 310 and the first electrode 320 and the first packaging part 610 and other related film layers corresponding to the first light-emitting unit located in the second isolation opening 212 and the third isolation opening 213 are removed (for example, by etching), so as to form a first light-emitting unit located in the first isolation opening 211, for example, a red light-emitting unit. The light-emitting functional layer 310, the first electrode 320, the first packaging part 610 and other related film layers corresponding to the second light-emitting unit are formed again in each isolation opening 210, and the light-emitting functional layer 310, the first electrode 320, the first packaging part 610 and other related film layers corresponding to the second light-emitting unit located on the side of the first light-emitting unit (for example, the red light-emitting unit) away from the substrate 100 are removed (for example, by etching), and the light-emitting functional layer 310, the first electrode 320, the first packaging part 610 and other related film layers corresponding to the second light-emitting unit of the third isolation opening 213 are removed to form a second light-emitting unit located at the second isolation opening 212, for example, a green light-emitting unit. A light-emitting functional layer 310, a first electrode 320, a first packaging portion 610 and other related film layers corresponding to the third light-emitting unit are formed in each isolation opening 210, and the light-emitting functional layer 310, the first electrode 320, the first packaging portion 610 and other related film layers corresponding to the third light-emitting unit located on the side of the first light-emitting unit and the second light-emitting unit (for example, a red light-emitting unit and a green light-emitting unit) away from the substrate 100 are removed (for example, by etching) to form a third light-emitting unit, for example, a blue light-emitting unit, located in the third isolation opening 213.

[0144] In some other optional embodiments, the middle portion 321 includes a first middle sub-portion 321a and a second middle sub-portion 321b stacked in a direction away from or close to the substrate 100, and the step of forming the first electrode 320 in the isolation opening 210 includes:

[0145] like Fig.14a As shown, the first electrode material layer is evaporated at a first evaporation angle, and the first electrode material layer is used to form the first segment 322a and the first middle sub-portion 321a.

[0146] like Fig.14b As shown, the second electrode material layer is evaporated at a second evaporation angle, and the second electrode material layer is used to form the second segment 322b and the second middle sub-section 321b; the first evaporation angle and the second evaporation angle are different.

[0147] In these optional embodiments, the central axis H of the nozzle of the evaporation source 700 is adjusted to intersect with the thickness direction N of the substrate 100, thereby forming inclined evaporation, and the evaporation angles M of the two evaporations are different. The central axis H of the nozzle corresponding to the first evaporation angle is inclined toward the side close to the first segment 322a, that is, the central axis H of the corresponding nozzle is located on the side close to the first segment 322a in the thickness direction N of the substrate 100. The central axis H of the nozzle corresponding to the second evaporation angle is inclined toward the side close to the second segment 322b, that is, the central axis H of the corresponding nozzle is located on the side close to the second segment 322b in the thickness direction N of the substrate 100. The first evaporation angle is greater than the second evaporation angle, so as to form a spacing between an end of the first segment 322a facing away from the substrate 100 and the edge of the light-emitting functional layer 310 that is greater than the spacing between an end of the second segment 322b facing away from the substrate 100 and the edge of the light-emitting functional layer 310, and / or, the spacing between an end of the first segment 322a facing away from the substrate 100 and the substrate 100 is greater than the spacing between an end of the second segment 322b facing away from the substrate 100 and the substrate 100, and / or, the contact length of the first segment 322a along the direction away from the substrate 100 with the isolation structure 200 is greater than the contact length of the second segment 322b along the direction away from the substrate 100 with the isolation structure 200.

[0148] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is disposed on the substrate, and the isolation structure encloses an isolation opening; A light-emitting unit, comprising a light-emitting functional layer at least partially disposed in the isolation opening and a first electrode located on a side of the light-emitting functional layer away from the substrate, wherein the first electrode comprises a middle portion and an edge portion connected to a peripheral side of the middle portion; The edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate. The edge portion includes a first segment and a second segment distributed on the peripheral side of the middle portion. Along the direction away from the substrate, the distance between the end of the first segment away from the substrate and the edge of the light-emitting functional layer is greater than the distance between the end of the second segment away from the substrate and the edge of the light-emitting functional layer.

2. The display panel according to claim 1, characterized in that: The isolation structure has a side wall facing the isolation opening, and the thickness of the first segment along the direction away from the side wall is equal to the thickness of the second segment along the direction away from the side wall; or, the absolute value of the difference in thickness between the first segment and the second segment along the direction away from the side wall is less than or equal to 5 nanometers; And / or, the thickness of the first segment and the second segment along a direction away from the sidewall is smaller than the thickness of the middle portion along a thickness direction of the substrate.

3. The display panel according to claim 1, characterized in that: The contact length between the first segment and the isolation structure along the direction away from the substrate is greater than the contact length between the second segment and the isolation structure along the direction away from the substrate; Preferably, the isolation structure comprises a conductive material, and the first segment and the second segment are electrically connected to the isolation structure.

4. The display panel according to claim 1, characterized in that: Along the thickness direction of the substrate, the distance between the end of the second segment facing away from the substrate and the edge of the light-emitting functional layer is 50% to 70% of the distance between the end of the first segment facing away from the substrate and the edge of the light-emitting functional layer; And / or, along the thickness direction of the substrate, the distance between the edge of the light-emitting functional layer close to the first segment and the substrate is equal to the distance between the edge of the light-emitting functional layer close to the second segment and the substrate, or the absolute value of the difference between the distance between the edge of the light-emitting functional layer close to the first segment and the substrate and the distance between the edge of the light-emitting functional layer close to the second segment and the substrate is less than or equal to 5 nanometers.

5. The display panel according to claim 1, characterized in that: The isolation structure comprises a first sublayer and a second sublayer located on a side of the first sublayer away from the substrate, wherein an orthographic projection of the side of the first sublayer away from the substrate on the substrate is located within an orthographic projection of the second sublayer on the substrate; Preferably, the light-emitting functional layer is in contact with the first sublayer; Preferably, the first segment is in contact with the first sublayer; The second segment is in contact with the first sublayer; Preferably, a distance between an end of the first segment facing away from the substrate and a side of the first sublayer facing the substrate is greater than a distance between an end of the second segment facing away from the substrate and a side of the first sublayer facing the substrate; Preferably, the distance between the end of the first segment facing away from the substrate and the side of the first sublayer facing the substrate is 10% to 90% of the distance between the side of the first sublayer facing away from the substrate and the side of the first sublayer facing the substrate; Preferably, the isolation structure further comprises a third sublayer located on a side of the first sublayer facing the substrate, and an orthographic projection of the first sublayer on the substrate is located within an orthographic projection of the third sublayer on the substrate; Preferably, the light-emitting functional layer is in contact with the first sublayer and the third sublayer; Preferably, the first sublayer and the first electrode are electrically connected.

6. The display panel according to claim 1, characterized in that: The display panel includes a plurality of the light-emitting units, the plurality of the light-emitting units include a first light-emitting unit and a second light-emitting unit that emit light of different colors, there are a plurality of isolation openings, the plurality of isolation openings include a first isolation opening and a second isolation opening, at least a portion of the first light-emitting unit is located in the first isolation opening, and at least a portion of the second light-emitting unit is located in the second isolation opening; The first segment of the first electrode located at the first isolation opening is located on one side of the middle portion along the first direction, and the first segment of the first electrode located at the second isolation opening is located on one side of the middle portion along the first direction; or, the first segment of the first electrode located at the first isolation opening is located on one side of the middle portion along the first direction, and the first segment of the first electrode located at the second isolation opening is located on one side of the middle portion along the second direction, and the first direction and the second direction are arranged to intersect.

7. The display panel according to claim 6, characterized in that: The multiple light-emitting units also include a third light-emitting unit that emits a different light color from the first light-emitting unit and the second light-emitting unit, and the multiple isolation openings also include a third isolation opening, at least a portion of the third light-emitting unit is located in the third isolation opening, and the first segment of the first electrode located in the third isolation opening is located on one side of the middle part along the first direction; or, the first segment of the first electrode located in the third isolation opening is located on one side of the middle part along the second direction; or, the first segment of the first electrode located in the third isolation opening is located on one side of the middle part along the third direction; any two of the first direction, the second direction and the third direction are arranged to intersect.

8. The display panel according to claim 1, characterized in that: A length of the first segment in at least one of the isolation openings along the circumferential direction of the middle portion is 0.2 to 1 times a length of the second segment along the circumferential direction of the middle portion.

9. The display panel according to claim 8, characterized in that: The middle portion in at least one of the isolation openings has an orthographic projection of a polygonal structure on the substrate, the first segment is connected to at least one side of the middle portion, and the second segment is connected to at least one side of the middle portion.

10. The display panel according to claim 9, characterized in that: The middle portion of at least one of the isolation openings has an orthographic projection of a hexagonal structure on the substrate; Preferably, the first segment is connected to one side of the middle portion, and the second segment is connected to the other five sides of the middle portion.

11. The display panel according to claim 9, characterized in that: The middle portion of at least one of the isolation openings has a rectangular shape as an orthographic projection on the substrate, Preferably, the first segment is connected to one side of the middle portion, and the second segment is connected to the other three sides of the middle portion; Alternatively, the first segment is connected to two adjacent side edges of the middle portion, and the second segment is connected to the other two side edges of the middle portion.

12. The display panel according to claim 1, characterized in that: The middle portion includes a first middle sub-portion and a second middle sub-portion stacked in a direction away from or close to the substrate; The first middle sub-section and the first segment are arranged at the same layer, and the second middle sub-section and the second segment are arranged at the same layer; Preferably, the light-emitting unit further comprises a second electrode, and the second electrode is arranged on a side of the light-emitting functional layer facing the substrate; Preferably, the display panel further comprises a first encapsulation layer, and the first encapsulation layer is arranged on a side of the light-emitting unit away from the substrate; Preferably, the first encapsulation layer comprises a plurality of first encapsulation portions arranged at intervals, and the first encapsulation portions extend through the isolation structure toward the sidewall of the isolation opening to a side of the isolation structure away from the substrate; Preferably, there is a gap between the first packaging portion and a side of the isolation structure facing away from the substrate; Preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is arranged on a side of the first encapsulation layer away from the substrate, and the second encapsulation layer fills the gap; Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is arranged on a side of the second encapsulation layer away from the substrate.

13. A display panel, characterized in that: include: substrate; An isolation structure is disposed on the substrate, and the isolation structure encloses an isolation opening; A light-emitting unit, comprising a light-emitting functional layer at least partially disposed in the isolation opening and a first electrode located on a side of the light-emitting functional layer away from the substrate, wherein the first electrode comprises a middle portion and an edge portion connected to a peripheral side of the middle portion; In which, at least a portion of the edge portion is arranged on the side wall of the isolation structure facing the isolation opening, and the edge portion is extended in a direction away from the substrate, and the edge portion includes a first segment and a second segment distributed on the peripheral side of the middle portion, and along the thickness direction of the substrate, the distance between the end of the first segment away from the substrate and the substrate is greater than the distance between the end of the second segment away from the substrate and the substrate.

14. A display panel, characterized in that: include: substrate; An isolation structure is disposed on the substrate, and the isolation structure encloses an isolation opening; A light-emitting unit, comprising a light-emitting functional layer at least partially disposed in the isolation opening and a first electrode located on a side of the light-emitting functional layer away from the substrate, wherein the first electrode comprises a middle portion and an edge portion connected to a peripheral side of the middle portion; In which, the edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate, and the edge portion includes a first segment and a second segment distributed on the peripheral side of the middle portion, and the contact length of the first segment with the isolation structure in the direction away from the substrate is greater than the contact length of the second segment with the isolation structure in the direction away from the substrate.

15. The display panel according to claim 14, characterized in that: The isolation structure has a sidewall facing the isolation opening, and a contact length of the first segment with the sidewall along a direction away from the substrate is greater than a contact length of the second segment with the sidewall along the direction away from the substrate.

16. The display panel according to claim 14, characterized in that: The isolation structure has a side wall facing the isolation opening, and the thickness of the first segment along the direction away from the side wall is equal to the thickness of the second segment along the direction away from the side wall; or, the absolute value of the difference in thickness between the first segment and the second segment along the direction away from the side wall is less than or equal to 5 nanometers; And / or, the thickness of the first segment and the second segment along a direction away from the sidewall is smaller than the thickness of the middle portion along a thickness direction of the substrate.

17. A display panel, characterized in that: include: substrate; An isolation structure, disposed on the substrate, the isolation structure encloses an isolation opening, and the isolation structure includes a first sublayer and a second sublayer located on a side of the first sublayer away from the substrate; A light-emitting unit, comprising a light-emitting functional layer at least partially disposed in the isolation opening and a first electrode located on a side of the light-emitting functional layer away from the substrate, wherein the first electrode comprises a middle portion and an edge portion connected to a peripheral side of the middle portion; In which, the edge portion extends in a direction away from the substrate and is arranged in contact with the first sub-layer, and along the thickness direction of the substrate, the distance between one end of the edge portion away from the substrate and the side of the first sub-layer facing the substrate is 10% to 90% of the distance between the side of the first sub-layer away from the substrate and the side of the first sub-layer facing the substrate.

18. A display device, characterized in that: A display panel comprising any one of claims 1-17.

19. A method for manufacturing a display panel, characterized in that: include: forming an isolation structure on the substrate, wherein the isolation structure surrounds an isolation opening; A light-emitting functional layer and a first electrode of a light-emitting unit are formed in the isolation opening, wherein the first electrode includes a middle portion and an edge portion connected to the peripheral side of the middle portion, wherein the edge portion is in contact with the isolation structure, and the edge portion is extended in a direction away from the substrate, and the edge portion includes a first segment and a second segment distributed on the peripheral side of the middle portion, and along the direction away from the substrate, a distance between an end of the first segment away from the substrate and an edge of the light-emitting functional layer is greater than a distance between an end of the second segment away from the substrate and the edge of the light-emitting functional layer, and / or a distance between an end of the first segment away from the substrate and the substrate is greater than a distance between an end of the second segment away from the substrate and the substrate, and / or a contact length of the first segment with the isolation structure along the direction away from the substrate is greater than a contact length of the second segment with the isolation structure along the direction away from the substrate.

20. The manufacturing method according to claim 19, characterized in that: The step of forming a first electrode in the isolation opening includes: The central axis of the nozzle of the evaporation source is arranged to intersect with the thickness direction of the substrate; Vapor depositing a first electrode material layer, wherein the first electrode material layer is used to form the first segment, the middle portion, and the second segment; Alternatively, the middle portion includes a first middle sub-portion and a second middle sub-portion stacked in a direction away from or close to the substrate, and the step of forming the first electrode in the isolation opening includes: Depositing a first electrode material layer at a first deposition angle, wherein the first electrode material layer is used to form the first segment and the first middle sub-section; A second electrode material layer is evaporated at a second evaporation angle, where the second electrode material layer is used to form the second segment and the second middle sub-section; the first evaporation angle and the second evaporation angle are different.

Images