Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a light-emitting functional layer, a light-filtering functional layer and a protective functional layer, the light-filtering functional layer is arranged on the side away from the light-emitting functional layer. The light-filtering functional layer further comprises color resist arranged in a pattern and a black matrix layer arranged between two adjacent color resist, and the side of the black matrix layer close to and away from the protective functional layer is arranged as a sticky surface. When bonding, the sticky surface has stickiness, so the protective functional layer can be directly bonded with the sticky surface and closely bonded, thereby eliminating other pressure-sensitive adhesive layers, protecting the film layer from warping in subsequent processes, improving the preparation process and improving the overall performance of the panel.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display panel design and manufacturing technology, and in particular to a display panel and display device. Background Technology

[0002] With the development of display panel manufacturing technology, people have put forward higher requirements for the display effect and overall performance of display panels and display devices.

[0003] Organic Light-Emitting Diodes (OLEDs) offer higher contrast, wider color gamut, thinner profiles, and better performance in dark environments compared to traditional LCD panels, leading to their widespread application across various fields. In existing technologies, to improve the performance of OLED displays, a POL-less technology replaces the traditional polarizer (POL) with a color filter layer. POL-less technology increases the light output of the OLED panel and reduces its overall thickness, thereby reducing power consumption. This technology typically integrates the black matrix layer and the color filter layer onto the liquid crystal cell. However, this process has significant drawbacks. For example, in subsequent layer fabrication processes, the black matrix layer, being a black material, can interfere with edge gripping. Furthermore, removing the polarizer can cause warping during module fabrication, affecting cutting and bonding, thus hindering further improvements in panel manufacturing processes.

[0004] In summary, in the existing technology, when using POL-less technology to prepare display panels, the modules within the panel are prone to warping and other process defects in subsequent film layer manufacturing processes, which is not conducive to further improving the overall performance of the display panel. Summary of the Invention

[0005] This invention provides a display panel and a display device. It effectively improves upon existing technologies where, during the fabrication of POL-less display panels, issues such as module warping and other process defects can easily occur, hindering further improvements in the overall performance of the panel.

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a display panel, comprising:

[0007] Emitting functional layer;

[0008] A light-filtering functional layer, wherein the light-emitting functional layer is disposed on the side of the light-emitting functional layer from which light is emitted; and,

[0009] A protective functional layer is disposed on the light filtering functional layer;

[0010] The light filtering functional layer includes patterned color resists and a black matrix layer disposed between two adjacent color resists, and at least the side of the black matrix layer near or away from the protective functional layer is configured as an adhesive surface.

[0011] According to one embodiment of the present invention, the light filtering functional layer includes a plurality of pixel openings, the color resist is disposed in each of the pixel openings, and the black matrix layer is disposed in the non-pixel opening area between adjacent pixel openings;

[0012] The height of the color resist is the same as the height of the black matrix layer.

[0013] According to one embodiment of the present invention, the adhesiveness of the adhesive surface of the black matrix layer near the edge of the light-emitting functional layer is greater than the adhesiveness of the black matrix layer near the center region of the light-emitting functional layer.

[0014] According to an embodiment of the present invention, the black matrix layer includes a first black matrix layer, a second black matrix layer and a third black matrix layer, wherein the first black matrix layer, the second black matrix layer and the third black matrix layer are respectively disposed in different non-pixel opening regions;

[0015] Wherein, the adhesive force of the adhesive surface of the first black matrix layer is at least greater than the adhesive force of the second black matrix layer or the third black matrix layer.

[0016] According to one embodiment of the present invention, the thickness of the light-filtering functional layer is set to 1µm to 4µm.

[0017] According to one embodiment of the present invention, the adhesive surface includes a first adhesive surface and a second adhesive surface;

[0018] The first adhesive surface is disposed on the side of the black matrix layer close to the light-emitting functional layer, and the second adhesive surface is disposed on the side of the black matrix layer away from the light-emitting functional layer, wherein the adhesive force of the first adhesive surface is greater than or equal to the adhesive force of the second adhesive surface.

[0019] According to one embodiment of the present invention, the display panel further includes a touch layer, the touch layer being disposed on the encapsulation layer;

[0020] The first adhesive surface is attached to the upper surface of the touch layer, and the second adhesive surface is attached to the lower surface of the protective functional layer.

[0021] According to one embodiment of the present invention, the protective layer includes any one of a glass cover plate, an ultra-thin glass layer, and a polymer plastic.

[0022] According to one embodiment of the present invention, the material of the black matrix layer includes acrylate or black polymer material.

[0023] According to a second aspect of the present invention, a display device is also provided, the display device including the display panel provided in the embodiments of the present application.

[0024] The beneficial effects of this invention are as follows: Compared with the prior art, this application provides a display panel and a display device. The display panel includes a light-emitting layer, an encapsulation layer, a light-filtering layer, and a protective layer. The light-filtering layer is disposed on the side of the touch layer away from the light-emitting layer. The light-filtering layer further includes patterned color resists and a black matrix layer disposed between adjacent color resists. The sides of the black matrix layer near and away from the protective layer are configured as adhesive surfaces. During bonding, because the adhesive surface is adhesive, the protective layer can be directly bonded to and tightly adhered to the adhesive surface, thereby eliminating the need for other pressure-sensitive adhesive layers and preventing warping of the film layer in subsequent processes. This effectively improves the manufacturing process and enhances the reliability and overall performance of the panel. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the 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 film layer structure of the display panel provided in the embodiments of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the filter functional layer 411 provided in the embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the film structure of another filter layer provided in an embodiment of this application;

[0029] Figures 4-7 The diagram shows the film structure corresponding to the preparation process provided in the embodiments of this application. Detailed Implementation

[0030] In the following detailed description, only certain embodiments of the invention are shown and described by way of simple illustration. As will be understood by those skilled in the art, the embodiments described herein can be modified in various ways without departing from the spirit or scope of the invention.

[0031] In the accompanying drawings, the thickness of layers, films, plates, regions, etc., may be exaggerated for clarity, better understanding, and ease of description. It should be understood that when an element such as a layer, film, region, or substrate is referred to as "located on another element," it may be located directly on the other element or there may be inserted elements.

[0032] Furthermore, unless explicitly stated otherwise, the word "including" and its variations such as "comprising" or "containing" will be understood to imply the inclusion of the discussed element, but not necessarily the exclusion of other elements. Further, in the specification, the phrase "on" means placed above or below the object part, and not necessarily on the upper side of the object part based on the direction of gravity.

[0033] It will be understood that although the terms “first,” “second,” etc., may be used in this document to describe various components, these components should not be limited by these terms. These terms are used only to distinguish one component from another.

[0034] As used in this article, the singular forms “one,” “a,” and “the” are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It will also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the said feature or component, but do not exclude the presence or addition of one or more other features or components.

[0036] It will be understood that when a layer, region, or component is referred to as being "formed on" another layer, region, or component, it can be formed directly or indirectly on that other layer, region, or component. For example, intermediate layers, regions, or components may exist.

[0037] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other.

[0038] This application provides a display panel and display device to effectively improve the problems of warpage and deformation that easily occur during the module manufacturing process when fabricating a POL-less display panel. It also improves the overall performance of the display panel. 。

[0039] like Figure 1 As shown, Figure 1 This is a schematic diagram of the film layer structure of the display panel provided in the embodiments of this application. In the embodiments of this application, the display panel may include a substrate 203, an array substrate 20, a light-emitting functional layer 220, an encapsulation layer 312, a light-filtering functional layer 411, and a protective functional layer 511.

[0040] In this embodiment, the array substrate 20 is disposed on a substrate 203, which may be a flexible polyimide film layer to provide support and buffer for the array substrate 20. The array substrate 20 may also include thin-film transistors and interlayer dielectric layers.

[0041] Specifically, the array substrate 20 may include an inorganic insulating layer 204, a first gate insulating layer 205, a second gate insulating layer 206, a planarization layer 207, a pixel definition layer 208, and an anode layer 209. Specifically, the inorganic insulating layer 204 is disposed on the substrate 203, the first gate insulating layer 205 is disposed on the inorganic insulating layer 204, the second gate insulating layer 206 is disposed on the first gate insulating layer 205, the planarization layer 207 is disposed on the second gate insulating layer 206, the pixel definition layer 208 is disposed on the planarization layer 207, and the anode layer 209 is disposed between the pixel definition layer 208 and the planarization layer 207, forming the aforementioned stacked structure.

[0042] Furthermore, a plurality of thin-film transistors are disposed within the array substrate. Each thin-film transistor may include a first gate 211, a second gate 212, a source 210, a drain 214, and an active layer 213. The first gate 211 is disposed between the inorganic insulating layer 204 and the first gate insulating layer 205; the second gate 212 is disposed between the first gate insulating layer 205 and the second gate insulating layer 206; and the active layer 213 is disposed on the substrate 203 and covered by the inorganic insulating layer 204. The source 210 and drain 214 are disposed on the same layer and between the planarization layer 207 and the second gate insulating layer 206, and are electrically connected to the active layer 213 through corresponding vias. This forms the structure of the array substrate 20 provided in this embodiment.

[0043] In this embodiment, the pixel definition layer 208 includes a plurality of patterned pixel openings, the light-emitting functional layer 220 is correspondingly disposed in each pixel opening, and the light-emitting functional layer 220 is electrically connected to the anode layer 209, thereby providing control signals through the anode layer 209.

[0044] Furthermore, the display panel also includes a second planarization layer 311, which is disposed on the pixel definition layer 208 and fills the pixel openings of the pixel definition layer 208.

[0045] Meanwhile, in this embodiment, the encapsulation layer 312 of the display panel is disposed on the second planarization 311, and the encapsulation layer 312 is used to seal and protect the array substrate. Specifically, when the encapsulation layer 312 is disposed, the encapsulation layer 312 may include at least one sandwich structure, wherein at least one organic layer is inserted between at least two inorganic layers. In addition, the encapsulation layer 312 may include at least one sandwich structure, wherein at least one inorganic layer is inserted between at least two organic layers, thereby effectively improving the encapsulation effect of the encapsulation layer.

[0046] Furthermore, the touch layer 313 is disposed on the encapsulation layer 312. The touch layer 313 may include multiple touch sensing units, using different touch sensing units to improve the touch sensing effect of the display panel. Specifically, the touch sensing units may be directly disposed on the encapsulation layer 312. However, embodiments of the inventive concept are not limited to this. For example, a buffer layer may be disposed on the encapsulation layer 312, and the touch sensing units may be disposed on the buffer layer disposed on the encapsulation layer 312. The buffer layer may include an inorganic layer and / or an organic layer. The touch sensing unit includes multiple touch sensors and multiple touch signal lines. The touch sensors and touch signal lines may have a single-layer structure or a multi-layer structure. Each of the touch sensors and touch signal lines may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), metal nanowires, and / or graphene. Each of the touch sensors and touch signal lines may include a metal layer such as molybdenum, silver, titanium, copper, aluminum and / or alloys thereof, which will not be elaborated here.

[0047] Furthermore, in this embodiment, the light-filtering functional layer 411 is disposed on the touch layer 313. In this embodiment, a touch display panel is used as an example for explanation. Optionally, when the display panel is a non-touch display panel, the light-filtering functional layer 411 can be directly disposed on the encapsulation layer 312, or the light-filtering functional layer 411 can be bonded to other film layers. Further details will not be elaborated here.

[0048] Optionally, the protective functional layer 511 is disposed on the light-filtering functional layer 411. In this embodiment, the protective functional layer 511 is mainly used to protect the light-filtering functional layer 411. Specifically, the protective functional layer 511 can be a common glass layer or an organic film layer. For example, the protective functional layer 511 can be made of an ultra-thin glass cover, a glass cover, a polymer plastic, or other materials. The protective functional layer 511 prevents the breakage of other film layers and scratches on the film surface, thereby improving the overall performance of the panel.

[0049] like Figure 2 As shown, Figure 2This is a schematic diagram of the structure of the light-filtering functional layer 411 provided in this embodiment. The light-filtering functional layer 411 may include a plurality of patterned color resists 4111. In this embodiment, red, blue, and green color resists are used as examples. These red, blue, and green color resists are disposed at different positions and above the light-emitting layer. When the light-emitting layer emits light, different display effects are achieved through the use of these different colored color resists.

[0050] Furthermore, the light-filtering functional layer 411 also includes a black matrix layer 40 and a plurality of pixel openings 611. Different colored color resists are correspondingly disposed within different pixel openings 611. Simultaneously, non-pixel openings 612 are also disposed between adjacent pixel openings 611. In this embodiment, the black matrix layer 40 is correspondingly disposed within the aforementioned non-pixel openings 612. In this embodiment, the height of the black matrix layer 40 is the same as the height of the color resist 4111, thereby ensuring the consistency of the thickness of the light-filtering functional layer 411 in different areas.

[0051] Optionally, the black matrix layer 40 is made of a black material. For example, the black material can be an acrylic material or other black polymer material, and the black polymer material has high viscosity.

[0052] In this embodiment, at least the black matrix layer 40 has adhesive surfaces on its sides near and away from the protective functional layer 511. Optionally, both the upper and lower surfaces of the black matrix layer 40 are adhesive surfaces. These adhesive surfaces enable bonding and adhesion between different film layers, effectively bonding and fixing different film layers, and effectively removing excess pressure-sensitive adhesive, thereby reducing the thickness of the display panel.

[0053] In the following embodiments, the black matrix layer 40 is described using a first black matrix layer 41, a second black matrix layer 42, and a third black matrix layer 43 as examples. The first black matrix layer 41, the second black matrix layer 42, and the third black matrix layer 43 are respectively disposed in different non-pixel opening regions. As described above, the first black matrix layer 41, the second black matrix layer 42, and the third black matrix layer 43 are respectively disposed in adjacent non-pixel opening regions.

[0054] In this embodiment, to improve the adhesion effect of the different black matrix layers, the black matrix layers can have different adhesion properties at different locations. For example, the adhesion of the black matrix layer near the edge of the light-emitting functional layer is greater than that near the center of the light-emitting functional layer. When the display panel is cut or bonded during the manufacturing process, the high adhesion at the edge of the bonding surface effectively ensures the bonding quality and avoids the problem of lifting.

[0055] Furthermore, since the different black matrix layers are positioned at different locations, the adhesive force of the adhesive surface corresponding to the first black matrix layer 41 is at least greater than the adhesive force of the adhesive surfaces corresponding to the second black matrix layer 42 or the third black matrix layer 43. This ensures a tight bond between the black matrix layer and the upper and lower film layers, and guarantees the overall performance of the display panel.

[0056] Furthermore, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the film structure of another light-filtering functional layer 411 provided in this embodiment. In this embodiment, when the black matrix layer 40 is provided, the black matrix layer 40 includes a first adhesive surface M1 near the light-emitting functional layer and a second adhesive surface M2 away from the light-emitting functional layer.

[0057] Both the first adhesive surface M1 and the second adhesive surface M2 possess high adhesive strength. Specifically, the adhesive strength corresponding to the first adhesive surface M1 and the second adhesive surface M2 is greater than or equal to 10N / 25mm, or, depending on the requirements of different products, the different adhesive surfaces are set to different magnitudes of adhesive strength. In the embodiments of this application, when testing the above-mentioned adhesive strength, the sample is generally cut into strips 25mm wide and 30mm long, attached to a steel plate, and pulled up at a speed of 300mm / min at a 180° angle. The magnitude of the force is then measured, which is the aforementioned adhesive strength.

[0058] Optionally, the adhesive force of the first adhesive surface M1 is greater than or equal to the adhesive force of the second adhesive surface M2. Meanwhile, since the first adhesive surface M1 is the bottom surface of the black matrix layer, and the second adhesive surface M2 is the top surface of the black matrix layer, the greater adhesive force of the second adhesive surface M1 ensures the bonding performance of the first adhesive surface M2 to the lower film layers and guarantees the adhesion effect with other film layers.

[0059] Furthermore, when setting the aforementioned black matrix layer, the area corresponding to the first adhesive surface M1 can be larger than the area corresponding to the second adhesive surface M2. This increases the area of ​​the bottom surface, thereby further improving the bonding effect between the first adhesive surface M1 and the touch layer or encapsulation layer, and ensuring the overall performance of the display panel.

[0060] Furthermore, in order to improve the adhesion of the black matrix layer 40, multiple micro-grooves or micro-protrusions can be provided on the first adhesive surface M1 or the second adhesive surface M2. The grooves or protrusions can effectively increase the surface roughness and the contact area with other films, thereby improving the adhesion effect of the black matrix layer.

[0061] Specifically, during setup, the first adhesive surface M1 is directly bonded to the bottom touch layer, and the second adhesive surface M2 is directly in contact with and bonded to the top protective functional layer. In this embodiment, since the display panel omits the conventional polarizer structure, the film layers lack proper support, which can lead to warping during the manufacturing process. In this embodiment, by setting the light-filtering functional layer, and ensuring that both sides of the black matrix layer of the light-filtering functional layer are set as adhesive surfaces, and by directly bonding other functional film layers through these adhesive surfaces, the light-filtering effect and adhesion effect of the light-filtering functional layer are effectively guaranteed. This prevents the thinner film layers from warping at the edges, affecting subsequent processes, and ensuring the overall performance of the display panel.

[0062] Furthermore, in this embodiment, color resists of different colors are respectively disposed above the light-emitting layer, and the width of the pixel opening 611 corresponding to the color resist is greater than the pixel opening corresponding to the pixel definition layer, thereby ensuring that all the light emitted by the light-emitting layer in the pixel opening of the pixel definition layer can be emitted from the corresponding pixel opening, and ensuring the display effect of the display panel.

[0063] In this embodiment of the application, when the above-mentioned light-filtering functional layer 411 is provided, the film thickness of the light-filtering functional layer 411 is set to 1µm to 4µm. Optionally, the thickness of the light-filtering functional layer 411 can be set to 1.5µm, 2.5µm, or 3.5µm. This ensures that the light-filtering functional layer 411 has both high light-filtering effect and high adhesion effect.

[0064] Furthermore, in the preparation of the above-mentioned filter functional layer 411, different black matrix layers can be formed by inkjet printing process. After printing, they are cured and color resists are set in the different pixel opening areas 611 formed.

[0065] like Figures 4-7 As shown, Figures 4-7 This is a diagram showing the film structure corresponding to the preparation process provided in the embodiments of this application. (In conjunction with...) Figure 1 For details on the membrane structure, please refer to [link / reference]. Figure 4 First, an array substrate corresponding to the display panel is prepared. The array substrate can be configured according to the conventional film layer structure of an array substrate, which will not be described in detail here. Then, a light-emitting functional layer 220 is prepared on the array substrate 20.

[0066] After the light-emitting functional layer 220 is fabricated, an encapsulation layer 312 is fabricated on the light-emitting functional layer 220 to seal the light-emitting functional layer 220 and ensure the sealing effect of the display panel.

[0067] After the encapsulation layer 312 is prepared, a touch layer 313 is then prepared on the encapsulation layer 312. The touch function of the display panel is realized through the touch layer 313. In this embodiment, when preparing the encapsulation layer 312 and the touch layer 313, the order of the film layers of the encapsulation layer 312 and the touch layer 313 can be changed, such as the touch layer 313 being disposed below the encapsulation layer 312.

[0068] See details Figure 5 After the encapsulation layer 312 and the touch layer 313 are fabricated, a mask 80 is provided, and a black matrix layer 40 is deposited on the touch layer 313. In this embodiment, the black matrix layer 40 can be deposited by inkjet printing. After the black matrix layer 40 is deposited, it is patterned using the mask 80 to form multiple pixel openings at positions corresponding to the light-emitting pixels in the light-emitting functional layer 220.

[0069] See details Figure 6 After the black matrix layer 40 is prepared, color resist 4111 is deposited in the pixel openings between the black matrix layers 40 and cured to finally form the light filtering functional layer 411 in the embodiment of this application.

[0070] In this embodiment, the black matrix layer 40 is made of a black adhesive material, such as acrylate or other black high-molecular adhesive polymer. After preparation, both the upper and lower surfaces of the black matrix layer 40 have a certain degree of adhesion, allowing other film layers to be directly bonded to the surface or bottom of the black matrix layer 40 during subsequent preparation. This eliminates the need for pressure-sensitive adhesive between film layers and ensures effective bonding between different film layers. The film layer structure provided in this embodiment can be followed when preparing the aforementioned light-filtering functional layer, and will not be elaborated further here.

[0071] See details Figure 7 After the light-filtering functional layer 411 is prepared, a protective functional layer 511 is then prepared on the light-filtering functional layer 411. In this embodiment, since the upper surface of the prepared black matrix layer is an adhesive surface with a certain adhesive force, the protective functional layer 511 can be directly and tightly attached to the light-filtering functional layer 411, ultimately forming the display panel in this embodiment. This eliminates the need for a pressure-sensitive adhesive layer between the film layers, and the black matrix layer can effectively bond the film layers and prevent warping problems in subsequent processes, ensuring the overall performance of the panel.

[0072] Furthermore, in this embodiment, a display device is also provided, which includes the display panel described in this embodiment. By fabricating the aforementioned light-filtering functional layer in the POL-less display panel, the film structure of the panel is improved, and the problem of film warping and deformation that easily occurs in subsequent processes due to the absence of a polarizer is eliminated. This effectively improves the fabrication process of POL-less displays and significantly enhances the overall performance of the panel.

[0073] In this embodiment, the display panel and display device can be applied to any product or component with display or touch functions, such as computers, electronic paper, monitors, laptops, and digital photo frames, and their specific types are not specifically limited.

[0074] In summary, the above description provides a detailed overview of the display panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core ideas of the present invention. Although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. A display panel, characterized in that, include: Emissive functional layer; A light-filtering functional layer, wherein the light-emitting functional layer is disposed on the side of the light-emitting functional layer from which light is emitted; and, A protective functional layer is disposed on the light filtering functional layer; The light filtering functional layer includes patterned color resists and a black matrix layer disposed between two adjacent color resists, and at least the side of the black matrix layer near or away from the protective functional layer is configured as an adhesive surface.

2. The display panel according to claim 1, characterized in that, The light filtering functional layer includes multiple pixel openings, the color resist is correspondingly disposed in each of the pixel openings, and the black matrix layer is correspondingly disposed in the non-pixel opening area between adjacent pixel openings; The height of the color resist is the same as the height of the black matrix layer.

3. The display panel according to claim 2, characterized in that, The viscosity of the adhesive surface of the black matrix layer near the edge of the light-emitting functional layer is greater than the viscosity of the black matrix layer near the center region of the light-emitting functional layer.

4. The display panel according to claim 2, characterized in that, The black matrix layer includes a first black matrix layer, a second black matrix layer, and a third black matrix layer, and the first black matrix layer, the second black matrix layer, and the third black matrix layer are respectively disposed in different non-pixel opening regions; Wherein, the adhesive force of the adhesive surface of the first black matrix layer is at least greater than the adhesive force of the second black matrix layer or the third black matrix layer.

5. The display panel according to claim 1, characterized in that, The thickness of the filter layer is set to 1µm~4µm.

6. The display panel according to claim 1, characterized in that, The viscous surface includes a first viscous surface and a second viscous surface; The first adhesive surface is disposed on the side of the black matrix layer close to the light-emitting functional layer, and the second adhesive surface is disposed on the side of the black matrix layer away from the light-emitting functional layer, wherein the adhesive force of the first adhesive surface is greater than or equal to the adhesive force of the second adhesive surface.

7. The display panel according to claim 6, characterized in that, The display panel further includes an encapsulation layer and a touch layer, wherein the encapsulation layer is disposed on the light-emitting functional layer and the touch layer is disposed on the encapsulation layer; The first adhesive surface is attached to the upper surface of the touch layer, and the second adhesive surface is attached to the lower surface of the protective functional layer.

8. The display panel according to claim 1, characterized in that, The protective functional layer includes any one of the following: a glass cover, an ultra-thin glass layer, and a polymer plastic.

9. The display panel according to claim 1, characterized in that, The material of the black matrix layer includes acrylate or black polymer materials.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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