Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, an isolation structure arranged on one side of the substrate, the isolation structure comprising a defined opening, a light-emitting unit arranged in the defined opening, and a microstructure part arranged on the side of the isolation structure away from the substrate. By arranging the microstructure part on the side of the isolation structure away from the substrate, when external light reaches the surface of the microstructure part, reflection and refraction occur on the surface of the microstructure part. Due to the existence of the microstructure part, the vertically incident light will be diffusely reflected, so that the reflectivity is reduced, the reflectivity of the external light in the display panel is reduced, and the display effect of the display panel is ensured.

Description

Technical Field

[0001] This application belongs to the field of electronic product technology, and in particular relates to a display panel and display device. Background Technology

[0002] With the advancement of technology, digital display devices such as smartphones and tablets have been widely used, and the display panel is an indispensable human-computer interaction interface in these devices. Organic Light Emitting Diode (OLED) display panels, for example, have advantages such as self-illumination, energy saving, flexibility, and good adaptability. Furthermore, display devices using OLEDs do not require a backlight and feature fast response times and excellent display quality, attracting user attention and being widely used in smartphones, tablets, and other terminal products.

[0003] However, the display effect of the display panel in the related technology is not good. Therefore, there is an urgent need for a new display panel and display device. Summary of the Invention

[0004] This application provides a display panel and display device. By providing a microstructure on the side of the isolation structure away from the substrate, external light is reflected and refracted on the surface of the microstructure when it reaches the surface of the microstructure. Due to the presence of the microstructure, the vertically incident light will undergo diffuse reflection, which reduces the reflectivity and reduces the reflectivity of external light in the display panel, thereby ensuring the display effect of the display panel.

[0005] One embodiment of this application provides a display panel, including: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure including a defined opening; a light-emitting unit disposed within the defined opening; and a microstructure portion disposed on the side of the isolation structure opposite to the substrate.

[0006] According to one aspect of this application, it also includes an encapsulation layer, the encapsulation layer including a first encapsulation layer, the first encapsulation layer including a first portion disposed on the side of the light-emitting unit opposite to the substrate and a second portion disposed on the side of the isolation structure opposite to the substrate; the second portion includes the microstructure portion, without the need for additional manufacturing processes or masks, thereby reducing reflectivity without increasing additional costs.

[0007] According to one aspect of this application, the surface of the microstructure portion facing away from the substrate is a non-flat surface; preferably, the interface roughness of the non-flat surface is greater than or equal to 0.5 μm to ensure diffuse reflection effect, reduce reflected light entering the display panel, and improve the display effect of the display panel.

[0008] According to one aspect of this application, the non-flat surface has a regular pattern; preferably, the non-flat surface includes a wavy or sawtooth shape. This weakens incident light from the outside on the non-flat surface, avoiding significant reflected light that could affect the display.

[0009] According to one aspect of this application, the microstructure includes a plurality of columnar protrusions extending in a direction away from the substrate and spaced apart; preferably, the orthographic projection of the columnar protrusions on the substrate includes at least one of polygons, circles, and ellipses to reduce reflectivity.

[0010] According to one aspect of this application, the distances between at least some of the columnar protrusions are not equal; preferably, the distances between all of the columnar protrusions are not equal, so as to disrupt the regularity of the columnar protrusion arrangement.

[0011] According to one aspect of this application, the material of the first encapsulation layer includes an inorganic material; preferably, the encapsulation layer further includes a second encapsulation layer located on the side of the first encapsulation layer opposite to the substrate, the material of the second encapsulation layer including an organic material; preferably, the encapsulation layer further includes a third encapsulation layer located on the side of the second encapsulation layer opposite to the substrate, the material of the third encapsulation layer including an inorganic material; preferably, the materials of the first encapsulation layer and the third encapsulation layer are the same to ensure the encapsulation effect.

[0012] According to one aspect of this application, a first electrode layer is further disposed on the side of the light-emitting unit away from the substrate, the material of the isolation structure includes a metallic material, and the first electrode layer and the isolation structure are in contact with each other; preferably, the isolation structure includes a single-layer metal structure; or, the isolation structure includes a multilayer metal structure, the multilayer metal structure including at least one of titanium-aluminum-titanium multilayer metal structure and molybdenum-aluminum-titanium multilayer metal structure, to ensure the connection effect between the first electrode layer and the isolation structure.

[0013] According to one aspect of this application, a pixel defining layer is further included between the substrate and the isolation structure. The pixel defining layer includes a plurality of defining structures and pixel openings located between the defining structures. The orthographic projection of the pixel openings onto the substrate is within the orthographic projection range of the defining openings onto the substrate. Preferably, the isolation structure includes a first surface disposed away from the pixel defining layer, and the second portion contacts the first surface. Preferably, the isolation structure further includes a second surface disposed towards the pixel defining layer, and the orthographic projection of the first surface onto the substrate is within the orthographic projection of the second surface onto the substrate. This improves the problem of subsequent encapsulation layers being prone to breakage at the location of the isolation structure.

[0014] In another aspect, the present invention provides a display device including the display panel in any of the above embodiments.

[0015] Compared with the prior art, the display panel provided in the embodiments of the present invention includes a substrate light-emitting unit, an isolation structure, and a microstructure. The embodiments of the present invention provide a microstructure on the side of the isolation structure away from the substrate so that when external light reaches the surface of the microstructure, it will be reflected and refracted on the surface of the microstructure. Due to the presence of the microstructure, the vertically incident light will undergo diffuse reflection, which reduces the reflectivity and reduces the reflectivity of external light in the display panel, thereby ensuring the display effect of the display panel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional schematic diagram of a display panel provided in one embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of a display panel provided in another embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional schematic diagram of a display panel provided in another embodiment of the present invention;

[0020] Figure 4 This is a top view of a microstructure provided in one embodiment of the present invention;

[0021] Figure 5 This is a top view of a microstructure provided in one embodiment of the present invention.

[0022] Figure 6 This is a top view of a display device provided in one embodiment of the present invention.

[0023] In the attached image:

[0024] 1-Substrate; 2-Pixel definition layer; 21-Definition structure; 22-Pixel opening; 3-Light emission unit; 4-Isolation structure; 5-Microstructure part; 6-Encapsulation layer; 61-First encapsulation layer; 611-First part; 612-Second part; 62-Second encapsulation layer; 63-Third encapsulation layer; 7-Second electrode layer; 8-First electrode layer; F1-First surface; F2-Second surface; Z-Direction perpendicular to the plane of the substrate; 10-Display panel; 100-Display device. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0027] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0028] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0029] Through long-term research, the inventors discovered that, due to the limitations of the film structure of existing display panels, the reflectivity of external light is high at certain film layers of the display panel, which affects the display effect of the display panel.

[0030] To address the aforementioned problems, this application provides a display panel and a display device, which will be described below in conjunction with the accompanying drawings. Figures 1 to 6Various embodiments of the display panel and display device will be described.

[0031] Please see Figure 1 The present application provides a display panel including: a substrate 1; an isolation structure 4 disposed on one side of the substrate 1, the isolation structure 4 including a defined opening; a light-emitting unit 3 disposed within the defined opening; and a microstructure portion 5 disposed on the side of the isolation structure 4 away from the substrate 1.

[0032] The display panel provided in this embodiment of the invention includes a substrate 1, a light-emitting unit 3, an isolation structure 4, and a microstructure part 5. By providing the microstructure part 5 on the side of the isolation structure 4 away from the substrate 1, the external light will be reflected and refracted on the surface of the microstructure part 5 when it reaches the surface of the microstructure part 5. Due to the presence of the microstructure part 5, the vertically incident light will undergo diffuse reflection, which reduces the reflectivity and reduces the reflectivity of external light in the display panel, thereby ensuring the display effect of the display panel.

[0033] Because this embodiment has an isolation structure 4 on one side of the substrate 1, and the isolation structure 4 is usually made of a material with high reflectivity such as metal, external light will be significantly reflected on the surface of the isolation structure 4, affecting the normal display of the display panel. In order to solve the above problem, this embodiment of the invention provides a microstructure part 5 on the side of the isolation structure 4 away from the substrate 1 to prevent external light from directly shining on the isolation structure 4, while allowing external light to directly shine on the microstructure part 5. The microstructure part 5 processes the incident light from the outside, thereby reducing the reflectivity of the external light in the display panel and ensuring the display effect of the display panel.

[0034] Optionally, the display panel may also include a pixel definition layer 2 disposed between the substrate 1 and the isolation structure 4. The pixel definition layer 2 includes a plurality of defining structures 21 and pixel openings 22 located between the defining structures 21. The isolation structure 4 is disposed on the side of the defining structure 21 away from the substrate 1, and the light-emitting unit 3 is at least partially disposed within the pixel opening 22.

[0035] In this embodiment, the pixel definition layer 2 is disposed on one side of the substrate 1 and includes a defining structure 21 and a pixel opening 22. A light-emitting unit 3 can be disposed within the pixel opening 22 to realize the light-emitting display of the display panel. An isolation structure 4 is disposed on the side of the pixel definition layer 2 facing away from the substrate 1.

[0036] Optionally, the orthographic projection of the pixel opening 22 on the substrate 1 is located within the range of the orthographic projection of the opening on the substrate 1.

[0037] In this embodiment, the area of ​​the opening is limited to be larger than the area of ​​the pixel opening 22, which can reduce the influence of the isolation structure 4 on the light emission angle of the light-emitting unit 3.

[0038] Optionally, multiple pixel openings 22 are spaced apart, and each pixel opening 22 is provided with a light-emitting unit 3.

[0039] Optionally, it also includes a first electrode layer 8 disposed on the side of the light-emitting unit 3 facing away from the substrate 1.

[0040] Optionally, the display panel further includes a second electrode layer 7 located on the side of the light-emitting unit 3 facing the substrate 1. The second electrode layer 7 and the first electrode layer 8 interact to drive the light-emitting unit 3 to emit light. One of the first electrode layer 8 and the second electrode layer 7 is the anode, and the other is the cathode. In this embodiment, the second electrode layer 7 is used as the anode and the first electrode layer 8 is used as the cathode for illustrative purposes.

[0041] Optionally, substrate 1 may include a substrate and an array substrate, the array substrate including a driving circuit. For example, along the direction Z perpendicular to the plane of substrate 1, the array substrate may include a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of the substrate and stacked thereon. An insulating layer is disposed between adjacent conductive film layers. Exemplarily, the pixel driving circuit disposed on the array substrate includes a transistor and a storage capacitor. The transistor includes an active layer, a gate, a source, and a drain. The storage capacitor includes a first electrode and a second electrode. As an example, the gate and the first electrode may be located on the first conductive layer, the second electrode may be located on the second conductive layer, and the source and drain may be located on the third conductive layer.

[0042] Optionally, the light-emitting unit 3 includes one or more of the following: an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer. The specific selection can be based on the specific type of the light-emitting unit 3 and is not particularly limited. The electron injection layer, electron transport layer, and hole blocking layer can be disposed between the first electrode layer 8 and the light-emitting material layer. The electron blocking layer, hole transport layer, and hole injection layer can be disposed between the second electrode layer 7 and the light-emitting material layer. The second electrode layer 7 is disposed between the substrate 1 and the light-emitting unit 3, and at least partially located within the pixel opening 22.

[0043] The material of the first electrode layer 8 can be one of the following metals: silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In). It can also be an alloy of the aforementioned metals, such as magnesium-silver alloy (Mg / Ag) or lithium-aluminum alloy (Li / Al). This embodiment does not limit the material in this regard.

[0044] The material of the second electrode layer 7 is generally a material with a high work function to improve hole injection efficiency. It can be gold (Au), platinum (t), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO), or a transparent conductive polymer (such as polyaniline). For example, the second electrode layer 7 can be made of ITO-Ag-ITO composite material, without any special limitations.

[0045] Optionally, a planarization layer is also included between the substrate 1 and the pixel definition layer 2. The planarization layer can be made of hexamethyl dimethyl ether, epoxy resin or polyimide, or other materials. This embodiment does not limit the application of this material.

[0046] Please see Figures 1 to 2 In some optional embodiments, the display panel further includes an encapsulation layer 6, which includes a first encapsulation layer 61. The first encapsulation layer 61 includes a first portion 611 disposed on the side of the light-emitting unit 3 away from the substrate 1 and a second portion 612 disposed on the side of the isolation structure 4 away from the substrate 1. The second portion 612 includes a microstructure portion 5.

[0047] It should be noted that the first portion 611 and the second portion 612 of the first encapsulation layer 61 can be formed together, representing only a difference in position. In this embodiment, the microstructure portion 5 can be formed directly on the second portion 612 using processes such as photolithography. That is, the microstructure portion 5 can be a groove, opening, or protrusion formed on the second portion 612, so that the side of the second portion 612 facing away from the substrate 1 has an uneven structure. In this embodiment, the microstructure portion 5 can be a part of the second portion 612, the entire structure of the second portion 612, or a separate microstructure portion 5; there is no particular limitation.

[0048] Optionally, in this embodiment, the first encapsulation layer 61 can be formed by CVD (Chemical Vapor Deposition) process, and then a photolithography process is performed, that is, in the development and exposure process, the mask pattern of the first encapsulation layer 61 can be designed so that the second part 612 of the first encapsulation layer 61 forms a patterned microstructure part 5, without the need for additional processes or masks, thereby reducing reflectivity without increasing additional costs.

[0049] Optionally, the material of the first encapsulation layer 61 includes inorganic materials, that is, the first encapsulation layer 61 is an inorganic encapsulation layer 6. The inorganic encapsulation layer 6 can be prepared by chemical vapor deposition, which can improve the density of the first encapsulation layer 61, thereby improving the encapsulation effect of the encapsulation layer 6.

[0050] Please see Figure 2Optionally, the encapsulation layer 6 further includes a second encapsulation layer 62 located on the side of the first encapsulation layer 61 facing away from the substrate 1. The material of the second encapsulation layer 62 includes organic materials. That is, the second encapsulation layer 62 is an organic encapsulation layer 6, which can be prepared by inkjet printing, allowing the encapsulation layer 6 to have a suitable thickness.

[0051] Optionally, the encapsulation layer 6 further includes a third encapsulation layer 63 located on the side of the second encapsulation layer 62 facing away from the substrate 1. The material of the third encapsulation layer 63 includes inorganic materials. That is, the third encapsulation layer 63 is an inorganic encapsulation layer 6. Adding an inorganic encapsulation layer 6 outside the organic encapsulation layer 6 can further improve the encapsulation effect of the encapsulation layer 6.

[0052] Optionally, the first encapsulation layer 61 and the third encapsulation layer 63 can be made of the same material. This allows the first encapsulation layer 61 and the third encapsulation layer 63 to be fabricated using the same equipment, simplifying the manufacturing process of the display panel.

[0053] Specifically, the encapsulation layer 6 can adopt the following combinations: silicon nitride-organic material-silicon nitride; aluminum oxide + silicon nitride-organic material-silicon nitride + aluminum oxide; silicon oxide + silicon nitride-organic material-silicon nitride + silicon oxide. Of course, it can also be composed of several layers of inorganic materials stacked together. For example, aluminum oxide + titanium oxide-aluminum oxide + titanium oxide-aluminum oxide + titanium oxide-aluminum oxide + titanium oxide, which consists of four layers of aluminum oxide and titanium oxide. This combination provides good water and oxygen barrier properties. Furthermore, because each layer of inorganic material is relatively thin, it can still be used in the display panel of this invention.

[0054] In some alternative embodiments, the surface of the microstructure portion 5 facing away from the substrate 1 is a non-flat surface.

[0055] It should be noted that, because it is a non-flat surface, when incident light from the outside hits the non-flat surface, it will be scattered at the non-flat surface. That is, when the curvature of the non-flat surface that the reflected light hits is large or even rough, the reflected light will deviate from its original direction and spread out. It will be redispersed, and the perpendicularly incident light will undergo diffuse reflection, which reduces the reflectivity and ensures the normal display of the display panel.

[0056] A non-planar surface can be understood as a surface with unevenness, which facilitates the scattering of emitted light at the non-planar surface. Specifically, the roughness of the surface of the microstructure part 5 facing away from the substrate 1 can be adjusted by methods such as laser etching or photolithography to meet the requirements of diffuse reflection. Optionally, the interface roughness Ra of the non-planar surface is greater than or equal to 0.5 μm to ensure diffuse reflection effect, reduce reflected light entering the display panel, and improve the display effect of the display panel.

[0057] Please see Figures 3 to 5In some optional embodiments, the non-flat surface has a regular pattern to facilitate fabrication and ensure diffuse reflection. Optionally, the non-flat surface can be wavy or sawtooth-shaped, or other shapes can also meet the requirements. This facilitates fabrication and can reduce the incident light from the outside on the non-flat surface, thus avoiding significant reflected light affecting the display.

[0058] Please see Figures 3 to 5 In some optional embodiments, the microstructure portion 5 includes a plurality of columnar protrusions that extend in a direction away from the substrate 1 and are spaced apart.

[0059] It is understandable that the columnar protrusions can be the pattern formed by adjusting the opening of the mask plate. In the area between the columnar protrusions, i.e. the concave area, the columnar protrusions and the concave parts cooperate to form an uneven structure. The vertically incident light will undergo diffuse reflection, thus reducing the reflectivity.

[0060] Optionally, the orthographic projection of the columnar protrusion on the substrate 1 includes at least one of polygon, circle, and ellipse. That is, the columnar protrusion can be a cylindrical protrusion or a square columnar protrusion, etc., and there is no special limitation.

[0061] In some optional embodiments, the distance between at least some of the columnar protrusions is not equal to disrupt the regularity of the columnar protrusion arrangement. Optionally, the distance between each columnar protrusion is not equal to ensure the disruption effect, thereby allowing the incident light from the outside to be dispersed and propagated in different directions at the columnar protrusions, reducing the reflected light at the columnar protrusions.

[0062] In some optional embodiments, the display panel further includes a first electrode layer 8 disposed on the side of the light-emitting unit 3 away from the substrate 1. Optionally, the material of the isolation structure 4 includes a metal material, and the first electrode layer 8 and the isolation structure 4 are in contact with each other.

[0063] It is understood that, in some optional embodiments, to enable adjacent first electrode layers 8 to communicate with each other, the material of the isolation structure 4 can be a conductive metal material. Specifically, the isolation structure 4 can be a single-layer metal, such as silver (Ag), aluminum (Al), lithium (Li), titanium (Ti), molybdenum (Mu), etc. Alternatively, the isolation structure 4 can also be a multilayer metal structure, such as a titanium-aluminum-titanium multilayer metal structure or a titanium-aluminum-molybdenum multilayer metal structure. Of course, other conductive materials can also be used for the isolation structure 4, and there are no particular limitations. In some optional embodiments, adjacent first electrode layers 8 may not be interconnected, and the material of the isolation structure 4 can be an inorganic or organic material.

[0064] In some optional embodiments, the isolation structure 4 includes a first surface F1 disposed away from the pixel definition layer 2, and the second portion 612 contacts the first surface F1;

[0065] In these alternative embodiments, the second portion 612 of the first encapsulation layer 61 is in direct contact with the first surface F1, which can improve the problem of water and oxygen intruding into the light-emitting unit 3 between the first encapsulation layer 61 and the first surface F1, and can further improve the encapsulation effect of the display panel.

[0066] Optionally, the isolation structure 4 also includes a second surface F2 disposed toward the pixel definition layer 2, wherein the orthographic projection of the first surface F1 onto the substrate 1 is located within the orthographic projection of the second surface F2 onto the substrate 1.

[0067] In these alternative embodiments, since the orthographic projection of the first surface F1 onto the substrate 1 is within the orthographic projection of the second surface F2 onto the substrate 1, the cross-sectional size of the isolation structure 4 gradually increases or remains unchanged in the direction close to the substrate 1, which can improve the problem that the encapsulation layer 6, which is subsequently installed, is prone to breakage at the location of the isolation structure 4.

[0068] Optionally, in any of the above embodiments, the isolation structure 4 is integrally formed, or the isolation structure 4 includes multiple sub-layers stacked in the thickness direction of the display panel. By setting the isolation structure 4 as multiple sub-layers and selecting different materials for the sub-layers, it is easier to fabricate the isolation structure 4 into the target pattern and to improve the structure of the isolation structure 4.

[0069] This invention also provides a display device, which can be found in the following embodiments: Figure 6 This includes the display panel in any of the above embodiments.

[0070] The display device 100 provided in the embodiments of the present invention has the technical effects of the display panel 10 in any of the above embodiments. The explanations of the same or corresponding structures and terms in the above embodiments will not be repeated here.

[0071] The display device 100 provided in this application embodiment can be applied to mobile phones or any electronic product with display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This application embodiment does not make any special limitations on these.

[0072] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

[0073] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate, the isolation structure including a defined opening; The light-emitting unit is disposed within the defined opening; The first electrode layer is disposed on the side of the light-emitting unit away from the substrate. Adjacent first electrode layers are not interconnected. The first electrode layer and the side of the isolation structure facing the defined opening are in contact and connected, and the first electrode layer is terminated at the side of the isolation structure facing the defined opening. A microstructure portion is disposed on the side of the isolation structure away from the substrate. The microstructure portion includes a plurality of columnar protrusions that extend away from the substrate and are spaced apart. The area between the columnar protrusions is a recessed area. The columnar protrusions and the recessed area cooperate to form an uneven structure. The distance between each columnar protrusion is not equal. A pixel definition layer is disposed between the substrate and the isolation structure. The pixel definition layer includes a plurality of defining structures and a pixel opening located between the defining structures. The orthogonal projection of the pixel opening on the substrate is located within the orthogonal projection range of the defining opening on the substrate. The encapsulation layer includes a first encapsulation layer made of inorganic material. The first encapsulation layer includes a first portion disposed on the side of the light-emitting unit away from the substrate and a second portion disposed on the side of the isolation structure away from the substrate. The second portion includes the microstructure portion, and the orthographic projection of the microstructure portion on the substrate is located within the orthographic projection of the isolation structure on the substrate.

2. The display panel according to claim 1, characterized in that, The surface of the microstructure that faces away from the substrate is a non-flat surface.

3. The display panel according to claim 2, characterized in that, The interface roughness of the non-flat surface is greater than or equal to 0.5µm.

4. The display panel according to claim 1, characterized in that, The orthographic projection of the columnar protrusion on the substrate includes at least one of polygon, circle, and ellipse.

5. The display panel according to claim 1, characterized in that, The encapsulation layer further includes a second encapsulation layer located on the side of the first encapsulation layer opposite to the substrate, and the material of the second encapsulation layer includes organic materials.

6. The display panel according to claim 5, characterized in that, The encapsulation layer further includes a third encapsulation layer located on the side of the second encapsulation layer opposite to the substrate, and the material of the third encapsulation layer includes inorganic materials.

7. The display panel according to claim 6, characterized in that, The material of the first encapsulation layer is the same as the material of the third encapsulation layer.

8. The display panel according to claim 1, characterized in that, The isolation structure includes a single-layer metal structure; or, the isolation structure includes a multilayer metal structure, wherein the multilayer metal structure includes at least one of titanium-aluminum-titanium multilayer metal structure and molybdenum-aluminum-titanium multilayer metal structure.

9. The display panel according to claim 1, characterized in that, The isolation structure includes a first surface disposed away from the pixel definition layer, and the second portion is in contact with the first surface.

10. The display panel according to claim 9, characterized in that, The isolation structure further includes a second surface disposed toward the pixel definition layer, wherein the orthographic projection of the first surface onto the substrate lies within the orthographic projection of the second surface onto the substrate.

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

Images