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 pixel defining layer is arranged on one side of the substrate, and the pixel defining layer comprises a pixel limiting part, a pixel opening and a first concave part, and the pixel opening and the first concave part are defined by the pixel limiting part; the isolation structure is arranged on one side of the substrate, a plurality of isolation openings are defined by the isolation structure, and the pixel openings communicate with the isolation openings; the light-emitting layer comprises light-emitting units at least partially located in the pixel openings; wherein part of the isolation structure is located on the side, away from the substrate, of the pixel limiting part, the first concave part is filled with part of the isolation structure to form the first groove, and the production efficiency of the display panel is improved. In the preparation process of the display panel, the first groove can reduce the flow rate of etching liquid on the isolation structure, the impact force of the etching liquid on the packaging part is reduced, and the processing performance of the display panel is 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 process 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 process performance of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, comprising: a substrate; a pixel definition layer, arranged on one side of the substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening formed by the pixel defining portion, and a first recess is provided on the pixel defining portion; an isolation structure, arranged on one side of the substrate, the isolation structure encloses a plurality of isolation openings, and the pixel openings are connected to the isolation openings; a light-emitting layer, comprising a light-emitting unit at least partially located in the pixel opening; wherein a portion of the isolation structure is located on a side of the pixel defining portion away from the substrate, the isolation structure is away from the first recess on the side of the substrate, and the orthographic projection of the first recess on the substrate at least partially overlaps with the orthographic projection of the first recess on the substrate.

[0006] According to an embodiment of the present application, an orthographic projection of the first groove on the substrate is located within an orthographic projection of the first recess on the substrate.

[0007] According to an embodiment of the present application, the first concave portion is a through groove penetrating the pixel defining portion along the thickness direction of the display panel, or the first concave portion is a groove on a side of the pixel defining portion away from the substrate.

[0008] According to an embodiment of the present application, the isolation structure includes a first segment located in the first recess and a second segment located on a side of the pixel defining portion away from the substrate, and the first segment and the second segment have the same size along the thickness direction of the display panel.

[0009] According to an embodiment of the present application, the display panel further includes a first encapsulation layer, including a plurality of encapsulation parts for encapsulating each light emitting unit, and the encapsulation part corresponding to at least one light emitting unit extends into the first groove.

[0010] According to an embodiment of the present application, the first groove is in a grid shape and is disposed around each isolation opening.

[0011] According to an embodiment of the present application, the first concave portion is in a grid shape and is disposed around each pixel opening.

[0012] According to an embodiment of the present application, the packaging part includes a first part and a second part, the first part is located in the isolation opening on the side of the light-emitting unit away from the substrate and extends to the side of the isolation structure away from the substrate, and the second part is connected to the peripheral side of the first part and extends into the first groove.

[0013] According to an embodiment of the present application, the second portion is spaced apart from the isolation structure.

[0014] According to an embodiment of the present application, the display panel includes a second electrode layer, the second electrode layer includes a second electrode located between each light-emitting unit and the packaging part, and the second electrode is electrically connected to each isolation structure.

[0015] According to an embodiment of the present application, the display panel further includes a first electrode, which is located on a side of each light-emitting unit facing the substrate, and at least a portion of the first electrode is exposed by the pixel opening.

[0016] According to an embodiment of the present application, the display panel further includes a first insulating layer, and the first insulating layer is disposed between the pixel definition layer and the substrate.

[0017] According to an embodiment of the present application, the first insulating layer is provided with a second concave portion, part of the pixel defining portion is filled in the second concave portion to form the first concave portion, the orthographic projection of the first concave portion on the substrate at least partially overlaps with the orthographic projection of the second concave portion on the substrate, and the orthographic projection of the second concave portion on the substrate at least partially overlaps with the orthographic projection of the first groove on the substrate. According to an embodiment of the present application, the second concave portion is a through groove that penetrates the first insulating layer along the thickness direction of the display panel; or, the second concave portion is a groove that is provided on the side of the first insulating layer that is away from the substrate.

[0018] According to an embodiment of the present application, the display panel further includes a first electrode, which is located on a side of each light-emitting unit facing the substrate, at least a portion of the first electrode is exposed by the pixel opening, and the first electrode is located on a side of the first insulating layer facing away from the substrate.

[0019] According to an embodiment of the present application, an orthographic projection of the first insulating layer on the substrate at least partially overlaps with a projection of the pixel opening on the substrate.

[0020] According to an embodiment of the present application, a second insulating layer is provided on a side of the first insulating layer facing the substrate.

[0021] According to an embodiment of the present application, the display panel further includes a conductive layer, and the conductive layer is disposed on a side of the second insulating layer facing the substrate.

[0022] According to an embodiment of the present application, the isolation structure includes a first sublayer and a second sublayer, the first sublayer has a second groove on the side facing away from the substrate, the second groove is arranged on at least part of the peripheral side of the isolation opening, the second sublayer is located on the side of the first sublayer facing away from the substrate, part of the second sublayer is located in the second groove, and the side of the second sublayer facing away from the second groove constitutes the first groove.

[0023] According to an embodiment of the present application, the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the second sub-layer on the substrate.

[0024] According to an embodiment of the present application, the isolation structure also includes a third sublayer, which is arranged on the side of the first sublayer facing the substrate, and part of the third sublayer is located in the first recess to form a third groove, and the orthographic projection of the third groove on the substrate at least partially overlaps with the orthographic projection of the second groove on the substrate.

[0025] According to an embodiment of the present application, the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate.

[0026] The first aspect of the present application also provides a display panel, comprising: a substrate; a pixel definition layer, arranged on one side of the substrate, the pixel definition layer comprising a pixel defining portion and a pixel opening and a first recess formed by the pixel defining portion; an isolation structure, arranged on one side of the substrate, the isolation structure enclosing a plurality of isolation openings, the pixel openings being connected to the isolation openings; a light-emitting layer, comprising a light-emitting unit at least partially located within the pixel opening; wherein part of the isolation structure is located on the side of the pixel defining portion away from the substrate, and part of the isolation structure is filled in the first recess to form a first recess on the side of the isolation structure away from the substrate, and the orthographic projection of the first recess on the substrate at least partially overlaps with the orthographic projection of the first recess on the substrate; the isolation structure comprises a first segment located in the first recess and a second segment located on the side of the pixel defining portion away from the substrate, the first segment and the second segment having the same size along the thickness direction of the display panel.

[0027] An embodiment of the second aspect of the present application further provides a display device, comprising the display panel in any embodiment of the first aspect.

[0028] The third aspect of the present application also provides a method for manufacturing a display panel, including:

[0029] A pixel definition layer is formed on one side of the substrate, wherein the pixel definition layer includes a pixel definition portion, a pixel opening formed by the pixel definition portion, and a first concave portion.

[0030] An isolation structure material layer is formed on the side of the pixel definition layer away from the substrate, and a portion of the isolation structure material layer is filled in the first concave portion to form a first groove located on the side of the isolation structure material layer away from the substrate.

[0031] The patterned isolation structure material layer forms an isolation structure, the isolation structure encloses an isolation opening, the isolation opening is connected with the pixel opening, and the first groove is located on a side of the isolation structure away from the substrate.

[0032] A light emitting unit is formed within at least a portion of the pixel opening.

[0033] According to an embodiment of the present application, the step of forming a pixel definition layer on one side of the substrate includes:

[0034] A pixel definition material layer is formed on one side of the substrate.

[0035] The patterned pixel definition material layer forms a pixel defining portion and a pixel opening and a first concave portion enclosed by the pixel defining portion. The first concave portion and the pixel opening penetrate the pixel defining portion along a thickness direction of the display panel.

[0036] According to an embodiment of the present application, the step of forming a pixel definition layer on one side of the substrate includes:

[0037] A first insulating layer is formed on one side of the substrate.

[0038] The first insulating layer is patterned to form a second recess.

[0039] A pixel definition material layer is formed on the side of the first insulating layer away from the substrate, and a portion of the pixel definition material layer is filled in the second concave portion to form a first concave portion.

[0040] The patterned pixel definition material layer forms a pixel defining portion and a pixel opening surrounded by the pixel defining portion.

[0041] According to an embodiment of the present application, the step of forming a light-emitting unit located in at least part of the pixel opening also includes: forming a packaging portion on the side of each light-emitting unit facing away from the substrate, and the packaging portion corresponding to at least one light-emitting unit extends into the first groove.

[0042] In the embodiment of the present application, part of the isolation structure is located on the side of the pixel defining portion away from the substrate, and part of the isolation structure is filled in the first recess to form a first recess on the side of the isolation structure away from the substrate, and the first recess and the pixel opening can be formed in the same patterning process, thereby improving the production efficiency of the display panel. In the process of manufacturing the display panel, the first recess can reduce the flow rate of the etching solution on the isolation structure and reduce the impact force of the etching solution on the packaging part, thereby further reducing the occurrence of packaging failure, which is conducive to improving the process performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 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.

[0044] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0045] Figure 2 yes Figure 1 Cross-section at AA;

[0046] Figure 3 yes Figure 2 A partial enlarged view of a display panel;

[0047] Figure 4 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0048] Figure 5 is a structural schematic diagram of another display panel provided in an embodiment of the present application;

[0049] Figure 6 is a flow chart of a method for manufacturing a display panel provided in an embodiment of the present application;

[0050] Figures 7 to 9 is a schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application;

[0051] Fig.10 is a flow chart of another method for manufacturing a display panel provided in an embodiment of the present application;

[0052] Figure 11 to Figure 12 It is a schematic diagram of another method for manufacturing a display panel provided in an embodiment of the present application.

[0053] Explanation of the figure marks: 100, substrate; 200, isolation structure; 201, first sublayer; 202, second sublayer; 203, third sublayer; 204, second groove; 205, third groove; 210, first segment; 220, second segment; 230, first groove; 240, isolation opening; 250, isolation structure material layer; 300, light-emitting unit; 400, encapsulation part; 410, first part; 420, second part; 500, pixel defining part; 510, pixel opening; 520, first recess; 530, pixel definition material layer; 600, first insulating layer; 601, second insulating layer; 610, second recess; 620, via; 700, conductive layer; 810, first electrode; 820, second electrode; Z, thickness direction. DETAILED DESCRIPTION

[0054] 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.

[0055] 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., indicating directions or positional relationships, are 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 limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] 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.

[0057] like Figures 1 to 3As shown, a display panel provided by an embodiment of the first aspect of the present application includes: a substrate 100, a pixel definition layer, an isolation structure 200 and a light-emitting layer; the pixel definition layer is arranged on one side of the substrate 100, the pixel definition layer includes a pixel defining portion 500 and a pixel opening 510 formed by the pixel defining portion 500, and a first recess 520 is arranged on the pixel defining portion 500; the isolation structure 200 is arranged on one side of the substrate 100, the isolation structure 200 encloses a plurality of isolation openings 240, and the pixel openings 510 are connected to the isolation openings 240; the light-emitting layer includes a light-emitting unit 300 at least partially located in the pixel opening 510; wherein, part of the isolation structure 200 is located on the side of the pixel defining portion 500 away from the substrate 100, the isolation structure 200 is away from the first recess 230 on the side of the substrate 100, and the orthographic projection of the first recess 230 on the substrate 100 at least partially overlaps with the orthographic projection of the first recess 520 on the substrate 100.

[0058] In this embodiment, the isolation structure 200 is arranged on the substrate 100 and encloses a plurality of isolation openings 240 to separate the light-emitting layer to form mutually disconnected light-emitting units 300. The light-emitting units 300 are located in each isolation opening 240. The isolation structure 200 can reduce the light crosstalk between different light-emitting units 300, thereby improving the display effect. In addition, the light-emitting units 300 do not need to use a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. The pixel definition portion 500 of the pixel definition layer encloses a pixel opening 510 to set the light-emitting unit 300 and realize the normal light emission of the light-emitting unit 300. In addition, the pixel definition portion 500 defines the setting area of ​​each light-emitting unit 300 to reduce the crosstalk between each light-emitting unit 300. Part of the isolation structure 200 is located on the side of the pixel defining portion 500 away from the substrate 100, and part of the isolation structure 200 is filled in the first recess 520 to form a first groove 230 on the side of the isolation structure 200 away from the substrate 100. The first recess 520 and the pixel opening 510 can be formed in the same patterning process, thereby improving the production efficiency of the display panel. During the preparation of the display panel, the first groove 230 can reduce the flow rate of the etching solution on the isolation structure 200, reduce the impact force of the etching solution on the packaging portion 400, thereby further reducing the occurrence of packaging failure, which is conducive to improving the process performance of the display panel.

[0059] like Figure 2 As shown, in some optional embodiments, the orthographic projection of the first groove 230 on the substrate 100 is located within the orthographic projection of the first recess 520 on the substrate 100 .

[0060] In these optional embodiments, the first groove 230 is formed by the isolation structure 200 filling the first recess 520 , that is, the first groove 230 is generated in the area where the first recess 520 is provided.

[0061] like Figure 2 As shown, in some optional embodiments, the first concave portion 520 is a through groove that penetrates the pixel defining portion 500 along the thickness direction Z of the display panel.

[0062] In these optional embodiments, the pixel opening 510 and the first recess 520 both penetrate the pixel defining portion 500 along the thickness direction Z of the display panel, so that they can be formed simultaneously in the same patterning process, which can simplify the production process.

[0063] Optionally, the first concave portion 520 is a groove penetrating the pixel defining portion 500 along the thickness direction Z of the display panel.

[0064] like Figure 2 and Figure 3 As shown, in some optional embodiments, the isolation structure 200 includes a first segment 210 located in the first recess 520 and a second segment 220 located on the side of the pixel defining portion 500 away from the substrate 100, and the first segment 210 and the second segment 220 have the same size along the thickness direction Z of the display panel.

[0065] In these optional embodiments, the first segment 210 is filled in the first recess 520 to form a first groove 230 on the side of the first segment 210 facing away from the substrate 100, and the size of the first recess 520 along the thickness direction Z of the display panel is equal to the size of the first groove 230 along the thickness direction Z of the display panel, so that the size of the first segment 210 along the thickness direction Z of the display panel is equal to the size of the second segment 220 along the thickness direction Z of the display panel. It can be understood that along the thickness direction Z of the display panel, the minimum spacing from the side of the first segment 210 toward the substrate 100 to the side of the first segment 210 facing away from the substrate 100 is equal to the minimum spacing from the side of the second segment 220 toward the substrate 100 to the side of the second segment 220 facing away from the substrate 100.

[0066] like Figure 2 As shown, in some optional embodiments, the display panel further includes a first encapsulation layer, including a plurality of encapsulation portions 400 for encapsulating each light emitting unit 300 , and the encapsulation portion 400 corresponding to at least one light emitting unit 300 extends into the first groove 230 .

[0067] In these optional embodiments, the encapsulation part 400 can reduce the damage caused by water, oxygen, etc. entering the light-emitting unit 300 to the light-emitting unit 300, so as to improve the reliability of the light-emitting unit 300. The encapsulation part 400 corresponding to at least one light-emitting unit 300 extends into the first groove 230, so that the distribution area of ​​the encapsulation part 400 is larger, and the relative position between the encapsulation part 400 and the isolation structure 200 is more stable, so as to avoid the occurrence of encapsulation failure, and can further improve the yield of the display panel.

[0068] Optional, such as Figure 1 and Figure 2 As shown, the first groove 230 is in a grid shape and is disposed around each isolation opening 240. The packaging portion 400 in each isolation opening 240 at least partially extends into the first groove 230, thereby improving the packaging effect of each packaging portion 400.

[0069] Optional, such as Figure 1 and Figure 2 As shown, the first recess 520 is in a grid shape and is arranged around each pixel opening 510 , so that when the isolation structure 200 is formed, part of the isolation structure 200 fills the first recess 520 to form a grid-shaped first groove 230 , thereby simplifying the preparation process and improving the packaging effect of the packaging part 400 .

[0070] like Figure 2 As shown, in some optional embodiments, the packaging portion 400 includes a first part 410 and a second part 420, the first part 410 is located in the isolation opening 240 on the side of the light-emitting unit 300 away from the substrate 100 and extends to the side of the isolation structure 200 away from the substrate 100, and the second part 420 is connected to the peripheral side of the first part 410 and extends into the first groove 230.

[0071] In these optional embodiments, the first portion 410 extends from the isolation opening 240 to the side of the isolation structure 200 facing away from the substrate 100, the first portion 410 covers the side wall of the isolation structure 200 facing the isolation opening 240, the second portion 420 surrounds the edge of the first portion 410, the second portion 420 is located on the side of the isolation structure 200 facing away from the substrate 100, and the second portion 420 extends into the first groove 230, the relative position between the packaging portion 400 and the isolation structure 200 is more stable, the occurrence of packaging failure is avoided, and the packaging effect of the packaging portion 400 can be further improved.

[0072] Optional, such as Figure 2 and Figure 3 As shown, the second portion 420 is spaced apart from the isolation structure 200. During the preparation of the packaging portion 400, the isolation structure 200 under the packaging material layer will cover the light-emitting material layer, and the light-emitting material layer is subsequently etched away to form a gap between the second portion 420 and the isolation structure 200.

[0073] like Figure 2 As shown, in some optional embodiments, the display panel includes a second electrode layer, the second electrode layer includes a second electrode 820 located between each light-emitting unit 300 and the packaging part 400 , and the second electrode 820 is electrically connected to each isolation structure 200 .

[0074] In these optional embodiments, the isolation structure 200 separates the second electrode layer to form mutually spaced second electrodes 820, and the mutually spaced second electrodes 820 are electrically connected through the isolation structure 200 to form a whole-surface electrode, thereby ensuring the normal light emission of the light-emitting unit 300. The size of the first segment 210 along the thickness direction Z of the display panel is equal to the size of the second segment 220 along the thickness direction Z of the display panel, that is, when forming the first groove 230, the first segment 210 is not thinned by etching to form the first groove 230, which is beneficial to reduce the resistivity of the isolation structure 200, so as to reduce the power consumption of the display panel.

[0075] Optional, such as Figure 2 As shown, the display panel further includes a first electrode 810, which is located on the side of each light-emitting unit 300 facing the substrate 100, and at least a portion of the first electrode 810 is exposed by the pixel opening 510. One of the first electrode 810 and the second electrode 820 serves as an anode of the light-emitting unit 300, and the other serves as a cathode of the light-emitting unit 300.

[0076] like Figure 4 and Figure 5 As shown, in some optional embodiments, the display panel further includes a first insulating layer 600 , and the first insulating layer 600 is disposed between the pixel definition layer and the substrate 100 .

[0077] In these optional embodiments, the substrate 100 includes a driving circuit layer, and the first insulating layer 600 can reduce the probability of contact short circuit between the light emitting unit 300 and the driving circuit layer.

[0078] Optional, such as Figure 4 and Figure 5As shown, the first insulating layer 600 is provided with a second concave portion 610, and part of the pixel defining portion 500 is filled in the second concave portion 610 to form the first concave portion 520, thereby simplifying the preparation process of the first concave portion 520. The orthographic projection of the first concave portion 520 on the substrate 100 at least partially overlaps with the orthographic projection of the second concave portion 610 on the substrate 100, and the orthographic projection of the second concave portion 610 on the substrate 100 at least partially overlaps with the orthographic projection of the first groove 230 on the substrate 100. The first insulating layer 600 is provided with a second recess 610, and the pixel defining portion 500 is formed on the side of the first insulating layer 600 away from the substrate 100. Part of the material of the pixel defining portion 500 fills the second recess 610 to form a first recess 520 on the side of the pixel defining portion 500 away from the substrate 100, thereby increasing the bonding force between the pixel defining portion 500 and the first insulating layer 600 and reducing the risk of film peeling. When preparing the isolation structure 200 on the pixel defining portion 500, the material of the isolation structure 200 is filled in the first recess 520 to form a first groove 230 on the side of the isolation structure 200 away from the substrate 100, thereby increasing the bonding force between the isolation structure 200 and the pixel defining portion 500, reducing the risk of film peeling, and reducing the difficulty of the patterning process of the isolation structure 200.

[0079] Optional, such as Figure 4 and Figure 5 As shown, a second insulating layer 601 is provided on the side of the first insulating layer 600 facing the substrate 100, and a conductive layer 700 is provided on the side of the second insulating layer 601 facing the substrate 100. The provision of the first insulating layer 600 and the second insulating layer 601 is beneficial to increase the distance between the first electrode 810 and the conductive layer 700 and reduce the signal crosstalk between the first electrode 810 and the conductive layer 700.

[0080] Optional, such as Figure 4 As shown, the second recess 610 is a through groove that penetrates the first insulating layer 600 along the thickness direction Z of the display panel. The first electrode 810 is disposed between the first insulating layer 600 and the light-emitting unit 300. The first electrode 810 is electrically connected to the conductive layer 700 in the driving circuit layer through the via hole 620 provided on the first insulating layer 600 and the second insulating layer 601, so that the driving circuit layer can provide an electrical signal to the first electrode 810. The second recess 610 is a through groove, so that the second recess 610 and the via hole 620 can be formed simultaneously in the same patterning process, thereby simplifying the manufacturing process. The via hole 620 penetrates the first insulating layer 600 and the second insulating layer 601.

[0081] Optional, such as Figure 5As shown, the second recess 610 is a groove disposed on the side of the first insulating layer 600 away from the substrate 100. The first insulating layer 600 is etched using a mask plate, and the light transmittance of the mask plate corresponding to the via hole 620 region is greater than the light transmittance of the mask plate corresponding to the second recess 610 region, so as to form a via hole 620 penetrating the first insulating layer 600 and the second insulating layer 601 and a second recess 610 of the groove structure, and the via hole 620 and the second recess 610 are simultaneously formed in the same patterning process, thereby simplifying the preparation process.

[0082] Optional, such as Figure 4 and Figure 5 As shown, the first electrode 810 is located on the side of the first insulating layer 600 away from the substrate 100 , and the first insulating layer 600 can improve the flatness of the first electrode 810 .

[0083] Optional, such as Figure 4 and Figure 5 As shown, the orthographic projection of the first insulating layer 600 on the substrate 100 at least partially overlaps with the projection of the pixel opening 510 on the substrate 100 , thereby improving the flatness of the portion of the first electrode 810 exposed by the pixel opening 510 .

[0084] Optional, such as Figure 4 and Figure 5 As shown, the conductive layer 700 is disposed on the side of the second insulating layer 601 facing the substrate 100, and the first electrode 810 is electrically connected to the conductive layer 700 through the via hole 620 disposed in the first insulating layer 600 and the second insulating layer 601. Figure 2 and Figure 3 As shown, in some optional embodiments, the isolation structure 200 includes a first sublayer 201 and a second sublayer 202, the first sublayer 201 has a second groove 204 on the side facing away from the substrate 100, the second groove 204 is arranged on the side around at least part of the isolation opening 240, the second sublayer 202 is located on the side of the first sublayer 201 facing away from the substrate 100, part of the second sublayer 202 is located in the second groove 204, and the side of the second sublayer 202 facing away from the second groove 204 constitutes a first groove 230.

[0085] In these optional embodiments, the second groove 204 is provided on the side of the first sublayer 201 facing away from the substrate 100, and the second sublayer 202 is provided on the side of the first sublayer 201 facing away from the substrate 100. When preparing the second sublayer 202, the material of the second sublayer 202 falls on the side of the first sublayer 201 facing away from the substrate 100 and the second groove 204 to form a depression, thereby forming the first groove 230.

[0086] Optional, such as Figure 2 and Figure 3As shown, the orthographic projection of the first sublayer 201 on the substrate 100 is located within the orthographic projection of the second sublayer 202 on the substrate 100. The first sublayer 201 and the second sublayer 202 are arranged to form an isolation structure 200, and the orthographic projection of the first sublayer 201 arranged close to the substrate 100 on the substrate 100 is located within the orthographic projection of the second sublayer 202 on the substrate 100. The area of ​​the second sublayer 202 is larger than the area of ​​the first sublayer 201, and the second sublayer 202 covers the surface of the first sublayer 201 close to the second sublayer 202. At this time, the first sublayer 201 is recessed relative to the second sublayer 202 in the direction away from the isolation opening 240. When preparing the light-emitting layer, the light-emitting layer has a large drop at the edge of the isolation structure 200, and the first sublayer 201 is recessed relative to the second sublayer 202. The light-emitting layer is difficult to connect at the edge of the isolation structure 200, so it breaks, and the light-emitting layer breaks to form mutually disconnected light-emitting units 300.

[0087] like Figure 2 and Figure 3 As shown, in some optional embodiments, the isolation structure 200 also includes a third sublayer 203, which is arranged on the side of the first sublayer 201 facing the substrate 100, and part of the third sublayer 203 is located in the first recess 520 to form a third groove 205, and the orthographic projection of the third groove 205 on the substrate 100 at least partially overlaps with the orthographic projection of the second groove 204 on the substrate 100.

[0088] In these optional embodiments, when the first sub-layer 201 is side-etched, the third sub-layer 203 can provide protection to the film layer on the substrate 100 side. The material of the third sub-layer 203 falls into the first recess 520 to form the third recess 205, and the material of the first sub-layer 201 falls into the third recess 205 to form the second recess 204, thereby simplifying the preparation process of the isolation structure 200. When the first recess 520 is not provided, the isolation structure 200 includes at least two sub-layers. When the isolation structure 200 is patterned, it is necessary to first form the third sub-layer 203 and pattern to form the third recess 205, and then form the first sub-layer 201 and the second sub-layer 202 on the third sub-layer 203, thereby increasing the process difficulty. In the embodiment of the present application, by forming a first recess 520 synchronously with the pixel opening 510, or by forming a second recess 610 synchronously with the via 620, the material of the isolation structure 200 can fall into the first recess 520 to form a first groove 230, thereby simplifying the preparation process of the isolation structure 200.

[0089] Optional, such as Figure 2 As shown, the orthographic projection of the first sub-layer 201 on the substrate 100 is located within the orthographic projection of the third sub-layer 203 on the substrate 100 , thereby improving the protective effect of the third sub-layer 203 on the side film layer of the substrate 100 .

[0090] The specific design of the isolation structure 200 can refer to existing patents, such as application numbers 202310771124.9, 202310740412.8, 202310771071.0, 202311017132.0, PCT / CN2023 / 134518, and 202311091555.7, which record the relevant contents of the isolation structure 200.

[0091] The first aspect of the present application also provides a display panel, comprising: a substrate 100; a pixel definition layer, arranged on one side of the substrate 100, the pixel definition layer comprising a pixel defining portion 500 and a pixel opening 510 and a first recess 520 formed by the pixel defining portion 500; an isolation structure 200, arranged on one side of the substrate 100, the isolation structure 200 encloses a plurality of isolation openings 240, the pixel openings 510 are connected to the isolation openings 240; a light-emitting layer, comprising a light-emitting unit 300 at least partially located in the pixel opening 510; wherein a portion of the isolation structure 200 is located in the pixel The limiting portion 500 is located on a side away from the substrate 100, and part of the isolation structure 200 is filled in the first recess 520 to form a first groove 230 on the side of the isolation structure 200 away from the substrate 100, and the orthographic projection of the first groove 230 on the substrate 100 at least partially overlaps with the orthographic projection of the first recess 520 on the substrate 100; the isolation structure 200 includes a first segment 210 located in the first recess 520 and a second segment 220 located on the side of the pixel limiting portion 500 away from the substrate 100, and the first segment 210 and the second segment 220 have the same size along the thickness direction Z of the display panel.

[0092] In this embodiment, the first segment 210 is filled in the first concave portion 520 to form a first groove 230 on the side of the first segment 210 away from the substrate 100, and the size of the first concave portion 520 along the thickness direction Z of the display panel is equal to the size of the first groove 230 along the thickness direction Z of the display panel, so that the size of the first segment 210 along the thickness direction Z of the display panel is equal to the size of the second segment 220 along the thickness direction Z of the display panel, which is beneficial to improving the structural strength of the isolation structure 200. In addition, the second electrode 820 is electrically connected through the isolation structure 200 to form a full-surface electrode, and the first segment 210 is not thinned by etching to form the first groove 230, which is beneficial to reducing the resistivity of the isolation structure 200, thereby reducing the power consumption of the display panel.

[0093] In some optional embodiments, the configuration of technical features such as the encapsulation portion 400 , the pixel definition layer, and the first insulating layer 600 is as described above and will not be repeated here.

[0094] 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.

[0095] 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.

[0096] The third aspect of the present application also provides a method for manufacturing a display panel. Figure 6 As shown, the following steps are included:

[0097] Step S01: Figure 7 As shown, a pixel definition layer is formed on one side of the substrate 100 , and the pixel definition layer includes a pixel defining portion 500 , a pixel opening 510 and a first concave portion 520 formed by the pixel defining portion 500 .

[0098] Step S02: Figure 8 As shown, an isolation structure material layer 250 is formed on the side of the pixel definition layer away from the substrate 100 , and part of the isolation structure material layer 250 fills the first recess 520 to form a first groove 230 located on the side of the isolation structure material layer 250 away from the substrate 100 .

[0099] Step S03: Fig. 9 As shown, the patterned isolation structure material layer 250 forms an isolation structure 200 , and the isolation structure 200 encloses an isolation opening 240 . The isolation opening 240 is connected to the pixel opening 510 , and the first groove 230 is located on the side of the isolation structure 200 away from the substrate 100 .

[0100] Step S04: Figure 2 As shown, the light emitting unit 300 is formed in at least a portion of the pixel opening 510 .

[0101] In this embodiment, the isolation structure 200 is disposed on the substrate 100 and encloses a plurality of isolation openings 240. The isolation openings 240 are connected to the pixel openings 510. The isolation openings 240 separate the light-emitting layer to form mutually disconnected light-emitting units 300. The light-emitting units 300 are located at the pixel openings 510. The isolation structure 200 and the pixel defining portion 500 can reduce the light crosstalk between different light-emitting units 300, thereby improving the display effect. In addition, the light-emitting units 300 do not need to use a precision mask plate, which can reduce the development and use of precision masks and reduce the preparation cost. The pixel defining portion 500 of the pixel definition layer encloses the pixel opening 510 to set the light-emitting unit 300 and realize the normal light emission of the light-emitting unit 300. In addition, the pixel defining portion 500 defines the setting area of ​​each light-emitting unit 300 to reduce the crosstalk between each light-emitting unit 300. Part of the isolation structure 200 is located on the side of the pixel defining portion 500 away from the substrate 100, and part of the isolation structure material layer 250 is filled in the first recess 520 to form the first recess 230, thereby replacing the process of patterning the isolation structure 200 to form the first recess 230, and the first recess 520 and the pixel opening 510 can be formed in the same patterning process, thereby improving the production efficiency of the display panel. In the process of preparing the display panel, the first recess 230 can reduce the flow rate of the etching solution on the isolation structure 200, reduce the impact force of the etching solution on the packaging portion 400, thereby further reducing the occurrence of packaging failure, which is conducive to improving the process performance of the display panel.

[0102] In some optional embodiments, in step S01, Figure 7 As shown, including:

[0103] A pixel definition material layer 530 is formed on one side of the substrate 100 .

[0104] The patterned pixel definition material layer 530 forms a pixel defining portion 500 and a pixel opening 510 and a first concave portion 520 enclosed by the pixel defining portion 500 . The first concave portion 520 and the pixel opening 510 penetrate the pixel defining portion 500 along the thickness direction Z of the display panel.

[0105] In these optional embodiments, the first concave portion 520 and the pixel opening 510 are simultaneously formed in the same patterning process, thereby simplifying the manufacturing process.

[0106] In some optional embodiments, in step S01, Fig.10 As shown, including:

[0107] Step S011 : forming a first insulating layer 600 on one side of the substrate 100 .

[0108] Step S012: Fig.11As shown, the first insulating layer 600 is patterned to form a second recess 610 .

[0109] Step S013: Fig.12 As shown, a pixel definition material layer 530 is formed on the side of the first insulating layer 600 away from the substrate 100, and a portion of the pixel definition material layer 530 is filled in the second concave portion 610 to form a first concave portion 520;

[0110] Step S014: Figure 4 As shown, the patterned pixel definition material layer 530 forms a pixel defining portion 500 and a pixel opening 510 enclosed by the pixel defining portion 500 .

[0111] In these optional embodiments, the first insulating layer 600 is patterned to form a second recess 610, and when a pixel definition material layer 530 is formed on the first insulating layer 600, a portion of the pixel definition material layer 530 is filled in the second recess 610 to form a first recess 520, thereby simplifying the preparation process of the first recess 520, and being able to improve the bonding strength between the pixel defining portion 500 and the first insulating layer 600, reducing the risk of film layer deviation, and when an isolation structure material layer 250 is formed on the pixel defining portion 500, a portion of the isolation structure material layer 250 is filled in the first recess 520 to form a first groove 230 located on the side of the isolation structure material layer 250 away from the substrate 100, thereby simplifying the patterning process of the isolation structure 200.

[0112] In some optional embodiments, step S04 further includes: forming a packaging portion 400 on a side of each light emitting unit 300 facing away from the substrate 100 , and the packaging portion 400 corresponding to at least one light emitting unit 300 extends into the first groove 230 .

[0113] In these optional embodiments, part of the packaging portion 400 is located on the side of the light-emitting unit 300 away from the substrate 100 and extends from the isolation opening 240 to the first groove 230 on the side of the isolation structure 200 away from the substrate 100, thereby improving the packaging effect of the packaging portion 400 on the light-emitting unit 300.

[0114] 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; A pixel definition layer is arranged on one side of the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, and the pixel definition portion is provided with a first concave portion; An isolation structure is disposed on one side of the substrate, the isolation structure encloses a plurality of isolation openings, and the pixel openings are connected to the isolation openings; a light-emitting layer, comprising a light-emitting unit at least partially located within the pixel opening; Part of the isolation structure is located on the side of the pixel defining portion away from the substrate, and the isolation structure has a first groove on the side away from the substrate, and the orthographic projection of the first groove on the substrate at least partially overlaps with the orthographic projection of the first recess on the substrate.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the first groove on the substrate is located within the orthographic projection of the first recess on the substrate.

3. The display panel according to claim 1, characterized in that: The first concave portion is a through groove penetrating the pixel defining portion along the thickness direction of the display panel; or, the first concave portion is a groove on a side of the pixel defining portion away from the substrate.

4. The display panel according to claim 1, characterized in that: The isolation structure includes a first segment located in the first concave portion and a second segment located on a side of the pixel defining portion away from the substrate, and the first segment and the second segment have the same size along the thickness direction of the display panel.

5. The display panel according to claim 1, characterized in that: The display panel further includes a first encapsulation layer, including a plurality of encapsulation parts for encapsulating the light-emitting units, and the encapsulation part corresponding to at least one of the light-emitting units extends into the first groove; Preferably, the first groove is in a grid shape and is arranged around each of the isolation openings; Preferably, the first recess is in a grid shape and is arranged around each of the pixel openings.

6. The display panel according to claim 5, characterized in that: The packaging portion includes a first portion and a second portion, the first portion is located in the isolation opening on a side of the light emitting unit away from the substrate and extends to a side of the isolation structure away from the substrate, and the second portion is connected to a peripheral side of the first portion and extends into the first groove; Preferably, the second part and the isolation structure are spaced apart.

7. The display panel according to claim 5, characterized in that: The display panel includes a second electrode layer, the second electrode layer includes a second electrode located between each of the light-emitting units and the packaging part, and the second electrode is electrically connected to each of the isolation structures; Preferably, the display panel further comprises a first electrode, wherein the first electrode is located on a side of each light-emitting unit facing the substrate, and at least a portion of the first electrode is exposed from the pixel opening.

8. The display panel according to claim 1, characterized in that: The display panel further comprises a first insulating layer, wherein the first insulating layer is disposed between the pixel definition layer and the substrate; Preferably, the first insulating layer is provided with a second concave portion, part of the pixel defining portion is filled in the second concave portion to form the first concave portion, an orthographic projection of the first concave portion on the substrate at least partially overlaps with an orthographic projection of the second concave portion on the substrate, and an orthographic projection of the second concave portion on the substrate at least partially overlaps with an orthographic projection of the first groove on the substrate; Preferably, the second concave portion is a through groove penetrating the first insulating layer along the thickness direction of the display panel; or, the second concave portion is a groove arranged on a side of the first insulating layer away from the substrate; Preferably, the display panel further comprises a first electrode, the first electrode is located on a side of each light-emitting unit facing the substrate, at least a portion of the first electrode is exposed by the pixel opening, and the first electrode is located on a side of the first insulating layer facing away from the substrate; Preferably, the orthographic projection of the first insulating layer on the substrate at least partially overlaps with the projection of the pixel opening on the substrate; Preferably, a second insulating layer is provided on a side of the first insulating layer facing the substrate; Preferably, the display panel further comprises a conductive layer, and the conductive layer is arranged on a side of the second insulating layer facing the substrate.

9. The display panel according to claim 1, characterized in that: The isolation structure comprises a first sublayer and a second sublayer, the first sublayer has a second groove on a side facing away from the substrate, the second groove is arranged at least partially around the isolation opening, the second sublayer is located on a side of the first sublayer facing away from the substrate, a part of the second sublayer is located in the second groove, and a side of the second sublayer facing away from the second groove constitutes the first groove; Preferably, the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the second sub-layer on the substrate.

10. The display panel according to claim 9, characterized in that: The isolation structure further includes a third sublayer, the third sublayer is disposed on a side of the first sublayer facing the substrate, a portion of the third sublayer is located in the first concave portion to form a third groove, and an orthographic projection of the third groove on the substrate at least partially overlaps with an orthographic projection of the second groove on the substrate; Preferably, the orthographic projection of the first sub-layer on the substrate is located within the orthographic projection of the third sub-layer on the substrate.

11. A display panel, characterized in that: include: substrate; A pixel definition layer is disposed on one side of the substrate, wherein the pixel definition layer includes a pixel definition portion and a pixel opening and a first concave portion enclosed by the pixel definition portion; An isolation structure is disposed on one side of the substrate, the isolation structure encloses a plurality of isolation openings, and the pixel openings are connected to the isolation openings; a light-emitting layer, comprising a light-emitting unit at least partially located within the pixel opening; Part of the isolation structure is located on a side of the pixel defining portion away from the substrate, and part of the isolation structure is filled in the first concave portion to form a first concave on a side of the isolation structure away from the substrate, and an orthographic projection of the first concave on the substrate at least partially overlaps with an orthographic projection of the first concave portion on the substrate; The isolation structure includes a first segment located in the first concave portion and a second segment located on a side of the pixel defining portion away from the substrate, and the first segment and the second segment have the same size along the thickness direction of the display panel.

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

13. A method for manufacturing a display panel, characterized in that: include: Forming a pixel definition layer on one side of the substrate, the pixel definition layer comprising a pixel definition portion and a pixel opening and a first concave portion formed by the pixel definition portion; Forming an isolation structure material layer on the side of the pixel definition layer away from the substrate, wherein a portion of the isolation structure material layer fills the first concave portion to form a first groove located on the side of the isolation structure material layer away from the substrate; Patterning the isolation structure material layer to form an isolation structure, wherein the isolation structure encloses an isolation opening, the isolation opening is connected to the pixel opening, and the first groove is located on a side of the isolation structure away from the substrate; A light emitting unit is formed within at least a portion of the pixel opening.

14. The manufacturing method according to claim 13, characterized in that: The step of forming a pixel definition layer on one side of the substrate includes: forming a pixel definition material layer on one side of the substrate; The pixel definition material layer is patterned to form a pixel defining portion and a pixel opening and a first concave portion enclosed by the pixel defining portion, wherein the first concave portion and the pixel opening penetrate the pixel defining portion along a thickness direction of the display panel.

15. The manufacturing method according to claim 13, characterized in that: The step of forming a pixel definition layer on one side of the substrate includes: forming a first insulating layer on one side of the substrate; patterning the first insulating layer to form a second recess; forming a pixel definition material layer on a side of the first insulating layer away from the substrate, and partially filling the second concave portion with the pixel definition material layer to form the first concave portion; The pixel definition material layer is patterned to form a pixel defining portion and a pixel opening enclosed by the pixel defining portion.

16. The manufacturing method according to claim 13, characterized in that: The step of forming a light emitting unit located in at least a portion of the pixel opening further includes: A packaging portion is formed on a side of each of the light emitting units away from the substrate, and the packaging portion corresponding to at least one of the light emitting units extends into the first groove.

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