Display panel and display device

Abstract

This application provides a display panel and a display device. Specifically, the display panel includes: a substrate; a light-emitting functional layer disposed on the substrate; an isolation pillar disposed on the substrate, the isolation pillar being disposed on the same side of the substrate and the light-emitting functional layer; and a barrier structure disposed on the isolation pillar, the barrier structure being located between the isolation pillar and the light-emitting functional layer, configured to block the conductive path between the light-emitting functional layer and the isolation pillar. By employing the barrier structure, this application can isolate and block the isolation pillar and the light-emitting functional layer, avoiding the formation of a conductive path between the light-emitting functional layer and the isolation pillar, thereby preventing the accumulation of dissimilar ions such as silver ions in the light-emitting functional layer at the isolation pillar, ensuring the normal operation of the isolation pillar, and enabling the display panel to have better water and oxygen barrier capabilities, thus improving the quality of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Currently, with the increasing popularity of display devices such as smartphones, users have higher and higher requirements for the screen ratio of devices. As a display panel with a large screen ratio and excellent display capabilities, punch-hole screens have been well received by consumers and therefore have good development prospects.

[0003] In related technologies, the perforated areas of the display panel are equipped with isolation pillars to block water and oxygen. During the fabrication of the light-emitting functional layer, the isolation pillars and the light-emitting functional layer are prone to overlap, forming a conductive path and a corresponding voltage difference. Under the action of the voltage difference, conductive ions such as silver ions in the light-emitting functional layer will migrate to the isolation pillars and accumulate, causing the isolation pillars to fail and forming a water and oxygen path. This allows water and oxygen molecules to easily enter the interior of the display panel, causing damage or even delamination of the display panel and affecting the user experience. Summary of the Invention

[0004] In view of this, this application proposes a display panel and display device to solve the above-mentioned technical problems.

[0005] For the purposes described above, this application provides a display panel, including:

[0006] Substrate;

[0007] A light-emitting functional layer is disposed on the substrate.

[0008] An isolation pillar is disposed on the substrate, and the isolation pillar is disposed on the same side of the substrate as the light-emitting functional layer.

[0009] A barrier structure is disposed on the isolation pillar, the barrier structure being located between the isolation pillar and the light-emitting functional layer, and is configured to block the conductive path between the light-emitting functional layer and the isolation pillar.

[0010] Optionally, the barrier structure includes:

[0011] The first barrier layer is wrapped in a ring around the side of the isolation column.

[0012] Optionally, the isolation column has an annular groove along its side, and the first barrier layer is wrapped in an annular shape around the inner wall of the annular groove.

[0013] Optionally, the barrier structure includes:

[0014] A second barrier layer is disposed on the substrate, and the second barrier layer is connected to one end of the isolation pillar facing the substrate.

[0015] Optionally, the orthographic projection of the isolation pillar on the substrate overlaps the orthographic projection of the second barrier layer on the substrate.

[0016] Optionally, the thickness of the second barrier layer is greater than the thickness of the light-emitting functional layer.

[0017] Optionally, the second barrier layer is integrally connected to the substrate.

[0018] Optionally, the isolation column includes:

[0019] The source electrode and / or drain electrode are disposed on the substrate.

[0020] Optionally, the light-emitting functional layer includes:

[0021] A light-emitting layer is disposed on the substrate.

[0022] An electrode layer is disposed on the side of the light-emitting layer away from the substrate.

[0023] Based on the same invention, this application also provides a display device, including a display panel as described in any of the above embodiments.

[0024] As can be seen from the above, the display panel and display device provided in this application, by adopting a barrier structure, can isolate the isolation pillars and the light-emitting functional layer in the display panel, prevent the formation of a conductive path between the light-emitting functional layer and the isolation pillars, thereby avoiding light emission and ensuring that the display panel has good water and oxygen barrier capabilities, thus improving the quality of the display panel. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the display panel structure;

[0027] Figure 2 This is a schematic diagram of the structure of the isolation pillar and the substrate in the prior art;

[0028] Figure 3 This is a schematic diagram of a barrier structure in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of another barrier structure in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of another barrier structure in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 10, display area; 20, transition area; 40, perforated area; 100, substrate; 110, substrate layer; 120, inorganic layer; 200, light-emitting functional layer; 210, light-emitting layer; 220, electrode layer; 300, isolation pillar; 400, barrier structure; 400a, annular groove; 410, first barrier layer; 420, second barrier layer. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] Currently, with the continuous development of technology and the increasing improvement of people's quality of life, display devices such as smartphones, tablets, and smart TVs have become an indispensable part of people's work and life. In order to improve the user experience, meet people's demand for high screen ratios, and accommodate related components such as cameras and sensors, slots or holes are usually made in the display panel to form notch screens, waterdrop screens, and punch-hole screens. Among them, punch-hole screens, as a display panel with a relatively large screen ratio, less damage to the screen, and excellent display capabilities, are very popular among consumers and therefore have good development prospects.

[0035] The OLED display panel is encapsulated using TFE (Thin Film Encapsulation) technology to form a corresponding encapsulation layer. To ensure the reliability of the encapsulation layer for the OLED display panel, no functional film layer formed by vapor deposition is allowed below the edge area of ​​the encapsulation layer. Otherwise, after the OLED display panel is cut, water molecules and oxygen molecules from the surrounding environment can penetrate into the interior of the OLED display panel through the organic vapor-deposited film layer at the cut surface. Since the OLED display panel is highly sensitive to water and oxygen, the entry of water and oxygen molecules will affect the reliability of its encapsulation and the user experience.

[0036] To prevent water and oxygen from entering the OLED display panel and causing problems, structures that block water and oxygen are typically incorporated into the panel. The display panel may include the display area, transition area, and punch-hole area. (See [link to relevant documentation]). Figure 1 The display area serves as the working area of ​​the display panel, the perforated area is used to accommodate the camera and sensors in the display device, and the transition area is set between the display area and the perforated area to prevent external water and oxygen from entering the display area of ​​the display panel. Several isolation pillars can be set in the transition area, and the isolation pillars can be arranged in a ring around the perforated area so that the isolation pillars arranged in the transition area can block the display area and the perforated area.

[0037] For related technologies, please refer to Figure 2 The perforated area of ​​the display panel is equipped with isolation pillars to block water and oxygen. During the manufacturing of the light-emitting functional layer of the display panel, the isolation pillars in the transition area and the light-emitting functional layer are prone to overlap, thus forming a conductive path between them. Due to the corresponding voltage difference between the conductive paths, conductive ions such as silver ions in the light-emitting functional layer will migrate to the isolation pillar position and accumulate under the action of the voltage difference. This will cause the isolation pillar to fail and form a water and oxygen path, allowing water molecules and oxygen molecules to easily enter the interior of the display panel through the water and oxygen path, causing damage to the display panel or even delamination, affecting the user's experience of using the display panel.

[0038] In view of this, this application provides a display panel, including a substrate 100; a light-emitting functional layer 200 disposed on the substrate 100; an isolation pillar 300 disposed on the substrate 100, the isolation pillar 300 being disposed on the same side of the substrate 100 and the light-emitting functional layer 200; and a barrier structure 400 disposed on the isolation pillar 300, the barrier structure 400 being located between the isolation pillar 300 and the light-emitting functional layer 200, and configured to block the conductive path between the light-emitting functional layer 200 and the isolation pillar 300. (See also...) Figures 3-5 .

[0039] It should be noted that the substrate 100 in the display panel is used to protect and support the light-emitting functional layer 200 and other related components, while also providing good water and oxygen barrier capabilities to the back of the display panel, ensuring normal operation. The light-emitting functional layer 200 is disposed on the substrate 100. When the display panel is working, the light-emitting functional layer 200 provides the light source to display the corresponding content on the display panel. Furthermore, the substrate 100 also has isolation pillars 300 on the same side as the light-emitting functional layer 200. By using the isolation pillars 300, a corresponding water and oxygen barrier structure 400 can be formed in the transition area 20 to block the perforated area 40 and the display area 10, preventing water and oxygen from entering. To prevent water and oxygen from entering the display panel and causing damage, multiple isolation pillars 300 are arranged in a ring within the transition area 20 to ensure effective water and oxygen barrier. Each isolation pillar 300 is equipped with a barrier structure 400, which isolates the isolation pillar 300 from the light-emitting functional layer 200, preventing them from overlapping and forming a conductive path. This avoids the migration and accumulation of dissimilar ions such as silver ions through the conductive path, ensuring the isolation pillar 300 does not fail and maintaining its water and oxygen barrier capabilities, thus providing the display panel with a better display effect.

[0040] In some embodiments, the substrate 100 may include a substrate layer 110 and an inorganic layer 120, such as Figures 3-5 As shown; the substrate layer 110 in the substrate 100 can serve as a support carrier for the substrate 100, supporting and protecting various components on the substrate 100. The substrate layer 110 can be formed of polyimide (PI) material. The inorganic layer 120 in the substrate 100 enables the display panel to have good water and oxygen barrier capabilities, ensuring that the substrate 100 has good load-bearing capacity and protective effect. The inorganic layer 120 can be formed of semiconductor thin film materials such as silicon oxide, silicon nitride, or titanium oxide. In addition, according to the user's actual manufacturing requirements and the manufacturing specifications of the display panel, both the substrate layer 110 and the inorganic layer 120 can be provided in one or more layers to meet the performance requirements of the display panel.

[0041] In some embodiments, the barrier structure 400 includes a first barrier layer 410, which is annularly wrapped around the side of the isolation pillar 300. (See also...) Figure 3 .

[0042] It should be noted that by setting a barrier structure 400 on the isolation pillar 300, a barrier can be formed between the isolation pillar 300 and the light-emitting functional layer 200, preventing the formation of a conductive path between the light-emitting functional layer 200 and the isolation pillar 300. This avoids the migration and accumulation of dissimilar ions such as silver ions in the electrode portion of the light-emitting functional layer 200 at the location of the isolation pillar 300, thereby preventing the isolation pillar 300 from failing and preventing the formation of a water-oxygen pathway. Specifically, the first barrier layer 410 in the barrier structure 400 is disposed on the isolation pillar 300. On the side, when the light-emitting functional layer 200 is fabricated on the inorganic layer 120 of the substrate 100, the first barrier layer 410 can isolate the isolation pillar 300 and the electrode portion in the light-emitting functional layer 200 on both sides of the first barrier layer 410, so as to avoid the light-emitting functional layer 200 and the isolation pillar 300 from overlapping and forming a conductive path, and ensure that the isolation pillar 300 has a good water and oxygen isolation capability, so that the isolation pillar 300 can block water and oxygen in the hole area 40 and ensure the normal use of the display panel.

[0043] In some embodiments, the isolation post 300 has an annular groove 400a along its side, and the first barrier layer 410 is annularly wrapped around the inner wall of the annular groove 400a. (See also...) Figure 3 and Figure 5 .

[0044] It should be noted that an annular groove 400a is formed on the sidewall of the isolation pillar 300. Even if the isolation pillar 300 forms an I-shaped structure with convex upper and lower sections and a concave middle section, the isolation pillar 300 with this structure has a better isolation effect. By setting a first barrier layer 410 in the annular groove 400a, the isolation pillar 300 and the light-emitting functional layer 200 can be isolated, so that no conductive path is formed between them. The isolation pillar 300 can be fabricated separately on the substrate 100, or it can be fabricated from the source electrode and / or drain electrode (SD) located in the transition region 20 of the display panel. In this case, it is not necessary to add a separate step to fabricate the isolation pillar 300. The isolation pillar 300 can include a first metal layer, a second metal layer and a third metal layer stacked sequentially. The first metal layer and the second metal layer can be made of titanium, and the second metal layer can be made of aluminum, thereby forming a multi-level columnar structure of "titanium-aluminum-titanium". In addition, the annular groove 400a can be made using a wet etching process. The isolation pillar 300 is formed by processing the side of the isolation pillar 300 to form an annular groove 400a, and the isolation pillar 300 is passivated by oxygen plasma surface treatment process (O2 plasma) to form a first barrier layer 410 with isolation effect; for example, an aluminum oxide thin film layer can be formed on the side of the second metal layer, i.e., the aluminum layer, of the isolation pillar 300. Since aluminum oxide is not conductive, it can block the electrode part in the light-emitting functional layer 200 and the isolation pillar 300.

[0045] In some embodiments, the barrier structure 400 includes a second barrier layer 420 disposed on the substrate 100. The second barrier layer 420 is connected to one end of the isolation pillar 300 facing the substrate 100. (See also...) Figure 4 and Figure 5 .

[0046] It should be noted that by providing a barrier structure 400 on the isolation pillar 300, a barrier can be formed between the isolation pillar 300 and the light-emitting functional layer 200, preventing the formation of a conductive path between the electrode portion in the light-emitting functional layer 200 and the isolation pillar 300. This avoids the migration and accumulation of dissimilar ions such as silver ions in the electrode portion to the isolation pillar 300, thus providing a protective effect for the isolation pillar 300. The substrate 100 is provided with a second barrier layer 420, which is connected to the bottom end of the isolation pillar 300. The partition layer 420 supports and supports the isolation pillar 300, so that there is a certain gap between the substrate 100 and the bottom of the isolation pillar 300. Since the light-emitting functional layer 200 is disposed on the substrate 100, the isolation pillar 300 and the light-emitting functional layer 200 will not overlap and connect with each other due to the gap, thereby achieving a barrier effect between the two, thus avoiding the failure of the isolation pillar 300 due to the transition of dissimilar ions such as silver ions, and ensuring that the isolation pillar 300 can block water and oxygen in the perforated area 40, thus ensuring the performance of the display panel.

[0047] In some embodiments, the orthographic projection of the isolation pillar 300 on the substrate 100 overlaps the orthographic projection of the second barrier layer 420 on the substrate 100. (See also...) Figure 4 and Figure 5 .

[0048] It should be noted that by providing a barrier structure 400 between the isolation pillar 300 and the substrate 100, the isolation pillar 300 located in the transition region 20 of the display panel can be protected, preventing the formation of a conductive path between the electrode portion of the light-emitting functional layer 200 and the isolation pillar 300, thereby preventing the isolation pillar 300 from failing due to the transition of dissimilar ions such as silver ions in the electrode portion. Specifically, the orthogonal projection of the isolation pillar 300 on the substrate 100 can cover the orthogonal projection of the second barrier layer 420 on the substrate 100, even if the area of ​​the bottom of the isolation pillar 300 is larger than the area of ​​the second barrier layer 420, and ensuring sufficient contact between the two. When the light-emitting functional layer 200 is deposited on the substrate 100, the substrate 100 can cover the surface of the inorganic layer 120 in the substrate 100, and the edge portion of the light-emitting functional layer 200 will not overlap with the isolation pillar 300, thus preventing the formation of a conductive path.

[0049] In some embodiments, the thickness of the second barrier layer 420 is greater than the thickness of the light-emitting functional layer 200. (See also...) Figure 4 and Figure 5 .

[0050] It should be noted that the second barrier layer 420 in the barrier structure 400 is used to block between the light-emitting functional layer 200 and the isolation column 300 to prevent the formation of a conductive path, thereby avoiding the failure of the isolation column 300. Among them, the thickness of the second barrier layer 420 is set as S, and the thickness of the light-emitting functional layer 200 is set as H. To ensure that there is still a certain barrier interval between the bottom of the isolation column 300 and the light-emitting functional layer 200 after the light-emitting function is fabricated, so that the isolation column 300 and the light-emitting functional layer 200 are not electrically connected, the thickness S of the second barrier layer 420 is set to be greater than the thickness of the light-emitting functional layer 200, that is, H < S, to ensure that a corresponding barrier interval is formed between the light-emitting functional layer 200 and the isolation column 300, so as to prevent the isolation column 300 from being electrically connected to the electrode part of the light-emitting functional layer 200, and to ensure that the barrier structure 400 can block water and oxygen from entering the display panel, thereby improving the quality of the display panel.

[0051] In some embodiments, the second barrier layer 420 and the substrate 100 are integrally connected. Please refer to Figure 4 and Figure 5 .

[0052] It should be noted that in order to prevent a conductive path from being formed between the isolation column 300 in the transition region 20 and the electrode part in the light-emitting functional layer 200, the isolation column 300 can be disposed on the inorganic layer 120 of the substrate 100. And since the second barrier layer 420 in the barrier structure 400 is disposed between the isolation column 300 and the substrate 100, therefore, dry etching (Dryetch) can be used to etch the inorganic layer 120 located below the isolation column 300, so as to form a corresponding second barrier layer 420 on the upper surface of the inorganic layer 120 to block between the isolation column 300 and the light-emitting functional layer 200. At this time, the second barrier layer 420 and the inorganic layer 120 are integrally connected, without adding too many processes to fabricate the second barrier layer 420, and the firmness of the connection between the second barrier layer 420 and the substrate 100 can be ensured, so that the barrier structure 400 has a good barrier effect.

[0053] In addition, in some embodiments, the first barrier layer 410 and the second barrier layer 420 in the barrier structure 400 can be adopted simultaneously. Since both the first barrier layer 410 and the second barrier layer 420 can block between the isolation column 300 and the light-emitting functional layer 200, a double protection effect on the isolation column 300 can be achieved, and the formation of a conductive path between the isolation column 300 and the light-emitting functional layer 200 can be avoided, so that hetero-electric ions such as silver ions in the electrode part of the light-emitting functional layer 200 will not migrate and aggregate, ensuring the effectiveness of the isolation column 300, and having a good barrier effect on water and oxygen.

[0054] In some embodiments, the isolation pillar 300, including a source electrode and / or a drain electrode, is disposed on the substrate 100.

[0055] It should be noted that the isolation pillars 300 in this application are arranged in the transition region 20 of the display panel to block the edge of the hole area 40 and prevent water and oxygen in the hole area 40 from entering the display panel and causing damage to the display panel. The source electrode and drain electrode are part of the thin film transistor in the display panel. The source electrode and / or drain electrode arranged in the transition region 20 are used as isolation pillars 300, and the corresponding annular grooves 400a are etched on their side using a wet etching method. The first barrier layer 410 is passivated on their surface by an oxygen plasma surface treatment process to prevent the isolation pillars 300 from failing. Compared with separately fabricating isolation pillars 300 on the substrate 100, using the source electrode and drain electrode to fabricate isolation pillars 300 can simplify the fabrication steps, save the material for fabricating additional isolation pillars 300, and greatly reduce the manufacturing cost of the display panel.

[0056] It should be noted that since the transition region 20 of the display panel is not used for display, although current flows through the thin film transistors in the transition region 20 when the display panel is working, the source electrode and drain electrode located in the transition region 20 have been made into isolation pillars 300 by wet etching, and therefore are not used to drive the light-emitting functional layer 200 for display.

[0057] In some embodiments, the light-emitting functional layer 200 includes a light-emitting layer 210 disposed on the substrate 100; an electrode layer 220 is disposed on the side of the light-emitting layer 210 away from the substrate 100. (See also...) Figures 3-5 .

[0058] It should be noted that the light-emitting functional layer 200 located on the substrate 100 can provide a light source so that the corresponding content can be displayed on the display panel. The light-emitting functional layer 200 may include a light-emitting layer 210 and an electrode layer 220 formed by vapor deposition. The electrode layer 220 can be the cathode layer or anode layer of the light-emitting functional layer 200, that is, the electrode part in the light-emitting functional layer 200. For the transition area 20 of the display panel, the light-emitting layer 210 is disposed on the substrate 100 and does not conduct with the isolation pillar 300. However, the overlap between the electrode layer 220 and the isolation pillar 300 will form a conductive path between them. Therefore, the barrier structure 400 can block the isolation pillar 300 and the electrode layer 220 in the light-emitting functional layer 200 to ensure that no conductive path is formed between them, thereby effectively protecting the isolation pillar 300.

[0059] Based on the same invention, this application also provides a display device, including a display panel as described in any of the above embodiments; since the display device has the above-described display panel, the display device possesses all the advantages and beneficial effects of the above-described display panel; in addition, the display device in this application can be any product or component with display function, such as a mobile phone, computer, television, and multimedia display device, which will not be described in detail in this application.

[0060] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0061] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0062] Furthermore, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the apparatus may be shown in block diagram form. This is to prevent the embodiments of this application from being difficult to understand, and it also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully within the understanding of those skilled in the art). In setting forth specific details to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0063] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0064] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A display panel having a display area, a punch-hole area, and a transition area between the two, characterized in that, The display panel includes: Substrate; A light-emitting functional layer is disposed on the substrate. An isolation pillar is disposed on the substrate and located in the transition region. The isolation pillar is disposed on the same side of the substrate and the light-emitting functional layer. The isolation pillar is formed by a source electrode and / or a drain electrode in the transition region through a wet etching process. The isolation pillar includes a first metal layer, a second metal layer and a third metal layer stacked sequentially. The second metal layer is aluminum. An annular groove is formed on the side of the isolation pillar by a wet etching process. A barrier structure is disposed on the isolation pillar, the barrier structure being located between the isolation pillar and the light-emitting functional layer, and configured to block the conductive path between the light-emitting functional layer and the isolation pillar; the barrier structure includes a first barrier layer, the first barrier layer being wrapped around the inner wall of the annular groove; the inner wall of the annular groove is formed with a non-conductive alumina thin film layer by an oxygen plasma surface treatment process, which serves as the first barrier layer, so as to avoid the light-emitting functional layer overlapping with the isolation pillar during the evaporation process and generating a voltage difference, thereby preventing the silver ions of the light-emitting functional layer from migrating towards the isolation pillar.

2. The display panel according to any one of claims 1, characterized in that, The barrier structure includes: A second barrier layer is disposed on the substrate, and the second barrier layer is connected to one end of the isolation pillar facing the substrate.

3. The display panel according to claim 2, characterized in that, The orthogonal projection of the isolation pillar on the substrate overlaps the orthogonal projection of the second barrier layer on the substrate.

4. The display panel according to claim 3, characterized in that, The thickness of the second barrier layer is greater than the thickness of the light-emitting functional layer.

5. The display panel according to claim 2, characterized in that, The second barrier layer is integrally connected with the substrate.

6. The display panel according to claim 1, characterized in that, The light-emitting functional layer includes: A light-emitting layer is disposed on the substrate. An electrode layer is disposed on the side of the light-emitting layer away from the substrate.

7. A display device, characterized in that, Includes the display panel as described in any one of claims 1-6.

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