Display panel and display device

Abstract

The utility model relates to the technical field of display, and provides a display panel and a display device.The display panel comprises a display area and a non-display area, the non-display area at least partially surrounds the display area, the display panel further comprises a substrate and a dam, the dam is located on one side of the substrate and located in the non-display area, and the dam comprises an insulating layer and a pixel definition layer which are arranged in a stacked mode; the pixel definition layer is positioned on one side, back to the substrate, of the insulating layer; the side, close to the display area, of the dam is provided with a first end face, the side, back to the display area, of the dam is provided with a second end face, and the orthographic projection outer contour of the first end face on the substrate and the orthographic projection outer contour of the second end face on the substrate are both located on the orthographic projection outer contour of the insulating layer on the substrate in the direction perpendicular to the plane where the substrate is located. The processing property of the display panel provided by the utility model is improved.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) display panels are display devices that utilize the self-emissive principle of organic light-emitting materials to achieve display. They possess advantages such as fast response time, high brightness, and wide viewing angles, making them a highly competitive and promising type of display panel. They are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers, becoming the mainstream display device.

[0003] However, the current manufacturing process of OLED display products needs improvement. Utility Model Content

[0004] This application provides a display panel and a display device to improve the process performance of the display panel to at least a certain extent.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, a display panel is provided, the display panel including a display area and a non-display area, the non-display area at least partially surrounding the display area, the display panel further including a substrate and a dam, the dam being located on one side of the substrate and in the non-display area, the dam including a stacked insulating layer and a pixel definition layer, the pixel definition layer being located on the side of the insulating layer facing away from the substrate;

[0006] The dam has a first end face on the side near the display area and a second end face on the side away from the display area. Along a direction perpendicular to the surface of the substrate, the orthographic projection of the first end face on the substrate and the orthographic projection of the second end face on the substrate are both located on the orthographic projection of the insulating layer on the substrate.

[0007] In the display panel provided in this application embodiment, the structure of the dam can be adjusted so that the first end face of the dam near the display area and the second end face away from the display area are both formed on the insulating layer. This overcomes the problem in the related technology that the pixel definition layer constituting the above end face is prone to breakage on the side of the dam facing away from the substrate due to breakage, which affects the reliability of the packaging performance and ultimately improves the process performance of the display panel.

[0008] Optionally, along a direction perpendicular to the surface of the substrate, the orthogonal projection of the pixel definition layer on the substrate is located inside the orthogonal projection of the insulating layer on the substrate.

[0009] Optionally, the insulating layer includes a first insulating layer and a second insulating layer stacked together, the second insulating layer being located on the side of the first insulating layer facing away from the substrate, and the second insulating layer having at least a portion of the first end face and at least a portion of the second end face;

[0010] Along a direction perpendicular to the surface of the substrate, the orthogonal projection of the pixel definition layer on the substrate lies within the orthogonal projection of the second insulating layer on the substrate.

[0011] Optionally, the second insulating layer includes a first surface and a second surface, wherein the first surface is located on the side of the second surface facing away from the substrate;

[0012] The second insulating layer contacts the side surface of the pixel definition layer near the substrate through the first surface, and the second insulating layer contacts the side surface of the first insulating layer opposite to the substrate through the second surface.

[0013] Optionally, the orthographic projection of the first surface on the substrate lies within the orthographic projection of the second surface on the substrate.

[0014] Optionally, the pixel definition layer has a third surface located on the side of the pixel definition layer closer to the substrate;

[0015] Along a direction perpendicular to the plane of the substrate, the orthographic projection of the third surface on the substrate lies within the orthographic projection of the second insulating layer on the substrate.

[0016] Optionally, along a direction perpendicular to the plane of the substrate, the orthographic projection of the third surface on the substrate lies within the orthographic projection of the second surface on the substrate.

[0017] Optionally, along a direction perpendicular to the plane of the substrate, the orthographic projection of the third surface on the substrate lies within the orthographic projection of the first surface on the substrate.

[0018] Optionally, the pixel definition layer has a third end face and a fourth end face, the third end face being located on the side of the pixel definition layer closer to the display area, and the fourth end face being located on the side of the pixel definition layer away from the display area;

[0019] Along the extension direction of the plane containing the substrate, the third surface extends continuously and connects the third end face and the fourth end face.

[0020] Optionally, along a direction perpendicular to the surface of the substrate, the orthographic projection of the first insulating layer on the substrate lies within the orthographic projection of the second insulating layer on the substrate.

[0021] Optionally, along a direction perpendicular to the surface of the substrate, the orthographic projection of the first insulating layer on the substrate at least partially coincides with the orthographic projection of the pixel defining layer on the substrate.

[0022] Optionally, the orthographic projection of the first insulating layer on the substrate lies within the orthographic projection of the pixel defining layer on the substrate.

[0023] Optionally, at least a portion of the dam is disposed around the display area in a direction perpendicular to the plane of the substrate, and at least a portion of the orthogonal projection of the dam onto the substrate surrounds the orthogonal projection of the display area onto the substrate.

[0024] In a second aspect, this application also provides a display device including the display panel described in any of the preceding claims.

[0025] The display device provided in this application includes the above-mentioned display panel. Therefore, the display device has the beneficial effects of including at least one or more of the above-mentioned display panels. The specific effects are as described above and will not be repeated here.

[0026] The beneficial effects of the display panel and display device provided in this application are as follows: Compared with related technologies, the display panel provided in the embodiments of this application can improve the surface morphology of the side of the dam facing away from the substrate by adjusting the size of the second insulating layer and the pixel definition layer constituting the dam on the plane of the substrate without affecting the size of the dam, overcoming the problems of film layer breakage and peeling that may exist in the related film layers constituting the dam, improving the encapsulation reliability of the encapsulation film layer, and optimizing the process performance of the display panel. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a display panel dam in related technologies;

[0029] Figure 2 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of this application;

[0030] Figure 3 for Figure 2 The diagram shows a sectional view of the display panel along line AA.

[0031] Figure 4 for Figure 2Another AA-direction cross-sectional view of the display panel shown;

[0032] Figure 5 for Figure 2 Another AA-direction sectional view of the display panel shown;

[0033] Figure 6 This is a schematic diagram of the planar structure of the display device provided in the embodiments of this application.

[0034] The following are the labeling elements in the figure:

[0035] 100. Display device; 10. Display panel; 110. Display area; 120. Non-display area;

[0036] 1. Substrate; 2. Dam; 201. First end face; 202. Second end face; 21. Insulating layer; 211. First insulating layer; 212. Second insulating layer; 21201. First surface; 21202. Second surface; 22. Pixel definition layer; 2201. Third surface; 2202. Third end face; 2203. Fourth end face; 3. Light-emitting element. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] As used herein, the term "substrate" refers to a material on which subsequent material layers are added to provide a support substrate for the layers above. In some embodiments, the substrate may be flexible, stretchable, foldable, bendable, or rollable, such that the display panel may be flexible, stretchable, foldable, bendable, or rollable. The substrate material may be formed from any suitable insulating material that is flexible, such as polyimide (PI), polycarbonate (P), polyethersulfone (PES), or polymeric materials such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PR), or glass fiber reinforced plastic (FRP). The substrate may be transparent, translucent, or opaque. In other embodiments, the substrate may also be rigid, made of a rigid insulating material, such as metal, ultrathin glass, plastic, or sapphire wafer. The substrate itself may be patterned. The material added to the substrate can be patterned, or it can remain unpatterned.

[0045] The terms "layer" or "element" used in this document can refer to a structural or functional layer of a certain thickness and covering a certain area, composed of different materials that make up the structure of a display panel. A layer or element can extend over a complete layer or element structure located below or above, or have a smaller extent than the layer or element structure located below or above. It should be noted that the dimensions of layers and areas may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when a layer or element is referred to as being "on" another layer or element, it can be directly on the other layer or element, or it can be a layer located between two structures. Additionally, it is understood that when a layer or element is referred to as being "below" another layer or element, it can be directly below the other layer or element, or it can be more than one intermediate layer or element. It is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between two layers or two elements, or it can be more than one intermediate layer or element. Moreover, a layer or element can be a region of a homogeneous or non-homogeneous continuous structure with a thickness less than the thickness of that continuous structure. For example, the layer may be located between the top and bottom surfaces of the continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layer may extend laterally, vertically, and / or along a tapered surface. The substrate may be a layer, which may include one or more layers. For example, the interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0046] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In related technologies, the display panel 10 includes a display area 110 and a non-display area 120. A light-emitting element 3 is disposed within the display area 110. To encapsulate the light-emitting element 3, a dam 2 is provided within the non-display area 120 surrounding the display area 110. The dam 2 provides better support and restraint for the encapsulation layer used to encapsulate the light-emitting element 3, thereby achieving effective encapsulation and protection of the light-emitting element 3 and isolating it from corrosion by water, oxygen, and other substances in the environment. In related technologies, the dam 2 is generally made of multiple layers of film.

[0048] In the process of implementing the above solution, the inventors discovered the following problems in the related technology: at least part of the film layer of the dam 2 peels off and breaks, and the final encapsulation effect and leveling performance of the encapsulation layer are affected, which affects the reliability of the display panel 10 and makes it easy for encapsulation failure to occur.

[0049] Based on this, embodiments of this application provide a display panel 10 and a display device 100 to at least alleviate or improve the above-mentioned technical problems to a certain extent.

[0050] This application provides a display panel 10, which includes a display area 110 and a non-display area 120, wherein at least a portion of the non-display area 120 is disposed around the display area 110. Of course, when the display panel 10 is a punch-hole panel, the aforementioned punch-hole area is also a non-display area 120, in which case the display area 110 is disposed around a portion of the non-display area 120.

[0051] For example, please refer to Figure 2 The following explanation will further illustrate the structure of the display panel 10, taking the non-display area 120 as the border area surrounding the display area 110 as an example.

[0052] Specifically, the display panel 10 includes a substrate 1 and a dam 2. The dam 2 is located on one side of the substrate 1 and in the non-display area 120. The dam 2 includes an insulating layer 21 and a pixel definition layer 22 stacked together. The pixel definition layer 22 is located on the side of the insulating layer 21 facing away from the substrate 1.

[0053] Wherein, at least a portion of the dam 2 is disposed around the display area 110, and along a direction perpendicular to the surface of the substrate 1, at least a portion of the orthogonal projection of the dam 2 on the substrate 1 surrounds the orthogonal projection of the display area 110 on the substrate 1.

[0054] Please see Figure 2 The dam 2 has a first end face 201 on the side near the display area 110 and a second end face 202 on the side away from the display area 110. Along the direction perpendicular to the surface of the substrate 1, the orthographic projection outline of the first end face 201 on the substrate 1 and the orthographic projection outline of the second end face 202 on the substrate 1 are both located on the orthographic projection outline of the insulating layer 21 on the substrate 1.

[0055] In this embodiment, the outer contour refers to the projection of the outer peripheral edge of the film layer on the substrate 1 in the direction of its extension along the plane of the substrate 1.

[0056] In other words, at this time, the first end face 201 and the second end face 202 are both formed on the insulating layer 21 that constitutes the dam 2.

[0057] In related technologies, the pixel definition layer 22 can be fabricated using Half-tone Mask (HTM) semi-transparent technology. Due to limitations in the processing technology, the pixel definition material layer constituting the pixel definition layer 22 has a certain degree of fluidity during fabrication, which results in an uneven surface morphology on the side of the pixel definition layer 22 facing away from the substrate 1. Please refer to [link to relevant documentation]. Figure 1 At this time, there is a film peeling problem between the pixel definition layer 22 and the insulating layer 21, and the pixel definition layer 22 itself is broken, which will directly affect the encapsulation effect of the encapsulation layer, affect the leveling effect of the related film layer, and ultimately lead to poor encapsulation effect of the display panel 10.

[0058] By adjusting the structure of the dam 2, the first end face 201 of the dam 2 near the display area 110 and the second end face 202 away from the display area 110 in the display panel 10 provided in this application embodiment are both formed on the insulating layer 21. This overcomes the problem in the related art where the pixel definition layer 22 constituting the above end face is prone to breakage on the side of the dam 2 facing away from the substrate 1 due to breakage, which affects the reliability of the packaging performance and ultimately improves the process performance of the display panel 10.

[0059] At this time, the orthographic projection of the pixel definition layer 22 on the substrate 1 can be located inside the orthographic projection of the insulating layer 21 on the substrate 1; or it can completely coincide with the orthographic projection of the insulating layer 21 on the substrate 1; or, the orthographic projection of the pixel definition layer 22 on the substrate 1 is partially located inside the orthographic projection of the insulating layer 21 on the substrate 1, and partially coincides with the orthographic projection of the insulating layer 21 on the substrate 1.

[0060] Please see Figures 3-5 Along the direction perpendicular to the surface of substrate 1, the orthogonal projection of pixel definition layer 22 on substrate 1 is located inside the orthogonal projection of insulating layer 21 on substrate 1.

[0061] The structure of the above-mentioned dam 2 will be described in detail below, with the example that the orthographic projection of the pixel definition layer 22 on the substrate 1 is located within the outer contour of the orthographic projection of the insulating layer 21 on the substrate 1.

[0062] The insulating layer 21 can be made of an insulating material, which includes at least one of organic and inorganic materials. Correspondingly, the pixel definition layer 22, which also has insulating properties, is made of at least one of organic and inorganic materials.

[0063] When fabricating the dam 2, the pixel definition layer 22 and the insulating layer 21 can both be made of organic materials, or both can be made of inorganic materials, or one layer can be made of inorganic materials and the other layer of organic materials. Of course, the pixel definition layer 22 and the insulating layer 21 can also be made of the same material or different materials.

[0064] Specifically, films made of organic materials generally have good flexibility and processability, which can adapt to the complex environment inside the display panel 10 to a certain extent, and can better combine with other organic layers during the process. Films made of inorganic materials often have excellent barrier properties, mechanical strength and stability, and can effectively block the intrusion of harmful substances such as water vapor and oxygen, providing reliable physical protection and chemical barrier for the display area 110 of the display panel 10.

[0065] Therefore, organic and inorganic materials can be combined to prepare the above-mentioned dam 2, so as to further enhance the dam 2's ability to block harmful substances such as water vapor and oxygen.

[0066] In some embodiments, the insulating layer 21 is a stacked structure, including a first insulating layer 211 and a second insulating layer 212 stacked together, wherein the second insulating layer 212 is located on the side of the first insulating layer 211 facing away from the substrate 1. That is, the second insulating layer 212 is located on the side of the first insulating layer 211 facing the pixel definition layer 22, i.e., the second insulating layer 212 is located between the first insulating layer 211 and the pixel definition layer 22.

[0067] Please see Figure 3 In this embodiment, the second insulating layer 212 has at least a portion of a first end face 201 and at least a portion of a second end face 202. Along a direction perpendicular to the surface of the substrate 1, the orthographic projection of the pixel defining layer 22 onto the substrate 1 lies within the orthographic projection of the second insulating layer 212 onto the substrate 1.

[0068] Specifically, along the direction perpendicular to the surface of substrate 1, the orthographic projection of the first insulating layer 211 onto substrate 1 lies within the orthographic projection of the second insulating layer 212 onto substrate 1. At this time, both the first end face 201 and the second end face 202 are entirely located within the second insulating layer 212. (See also...) Figure 3 .

[0069] In this embodiment, the first insulating layer 211 and the pixel definition layer 22 can be completely separated by the second insulating layer 212. At this time, the distance between the first end face 201 and the second end face 202 of the dam 2 along the direction parallel to the plane of the substrate 1 is determined by the size of the second insulating layer 212. In the direction parallel to the plane of the substrate 1, without changing the size of the dam 2, the size of the second insulating layer 212 at the corresponding position can be increased to the original size of the dam 2. Correspondingly, the size of the pixel definition layer 22 is reduced so that its orthographic projection on the substrate 1 is within the orthographic projection of the second insulating layer 212 on the substrate 1. This allows for optimized adjustment of the dam 2 structure without changing its function or manufacturing process, thereby improving the bonding strength between the dam 2 and the encapsulation film layer, as well as the leveling effect of the encapsulation film layer at the corresponding position of the dam 2, and improving the process performance and reliability of the display panel 10.

[0070] It should be noted that the height of the dam 2 directly affects the packaging performance. In order to ensure that the packaging performance remains unchanged, in this embodiment, in the direction perpendicular to the surface of the substrate 1, the orthographic projection of the first insulating layer 211 on the substrate 1 needs to be at least partially coincident with the orthographic projection of the pixel definition layer 22 on the substrate 1.

[0071] At this time, in the direction perpendicular to the surface of the substrate 1, the orthographic projection of the first insulating layer 211 on the substrate 1 is defined as the first projection, the orthographic projection of the second insulating layer 212 on the substrate 1 is defined as the second projection, and the orthographic projection of the pixel definition layer 22 on the substrate 1 is defined as the third projection. The first projection, the second projection, and the third projection have overlapping regions, and the overlapping regions are located within the projection range of the three projections in the projection direction.

[0072] Specifically, the dimensions of the aforementioned dam 2 can be referenced from relevant technologies; this embodiment does not limit the specific dimensions of the dam 2.

[0073] Please see Figure 3 At this time, the orthographic projection of the first insulating layer 211 on the substrate 1 lies within the orthographic projection of the pixel definition layer 22 on the substrate 1; or, please refer to Figure 4 At this time, the orthographic projection of the pixel definition layer 22 on the substrate 1 lies within the orthographic projection of the first insulating layer 211 on the substrate 1; or, please refer to Figure 5 At this time, the orthographic projection of the first insulating layer 211 on the substrate 1 and the orthographic projection of the pixel definition layer 22 on the substrate 1 partially overlap, and the overlapping part is located within the orthographic projection of the second insulating layer 212 on the substrate 1.

[0074] In some embodiments, the second insulating layer 212 further includes a first surface 21201 and a second surface 21202 arranged opposite to each other, wherein the first surface 21201 is located on the side of the second surface 21202 facing away from the substrate 1.

[0075] Both the first end face 201 and the second end face 202 are connected to the first surface 21201 and the second surface 21202. (See also...) Figures 3-5 The orthographic projection of the first surface 21201 on the substrate 1 is located within the orthographic projection of the second surface 21202 on the substrate 1.

[0076] The first insulating layer 211, the second insulating layer 212, and the pixel definition layer 22 are stacked in sequence. At this time, the second insulating layer 212 can contact the side surface of the pixel definition layer 22 close to the substrate 1 through the first surface 21201, and contact the side surface of the first insulating layer 211 opposite to the substrate 1 through the second surface 21202.

[0077] To better illustrate the structure of the pixel definition layer 22, the pixel definition layer 22 is provided with a third end face 2202 and a fourth end face 2203. The third end face 2202 is located on the side of the pixel definition layer 22 closer to the display area 110, and the fourth end face 2203 is located on the side of the pixel definition layer 22 away from the display area 110. The orthographic projection of the third end face 2202 on the substrate 1 is located within the orthographic projection of the first surface 21201 on the substrate 1, or the orthographic projection of the third end face 2202 on the substrate 1 is located within the orthographic projection of the first end face 201 on the substrate 1. Similarly, the orthographic projection of the fourth end face 2203 on the substrate 1 is located within the orthographic projection of the first surface 21201 on the substrate 1, or the orthographic projection of the third end face 2202 on the substrate 1 is located within the orthographic projection of the second end face 202 on the substrate 1.

[0078] In other similar embodiments, the pixel definition layer 22 may also be provided with a third surface 2201, which is located on the side of the pixel definition layer 22 close to the substrate 1.

[0079] Along the direction perpendicular to the surface of substrate 1, the orthogonal projection of the third surface 2201 on substrate 1 lies within the orthogonal projection of the second insulating layer 212 on substrate 1.

[0080] Please see Figures 3-5 Along the direction perpendicular to the surface of substrate 1, the orthographic projection of the third surface 2201 on substrate 1 is located within the orthographic projection of the second surface 21202 on substrate 1.

[0081] In order to further improve the structure of the pixel definition layer 22 and reduce the possibility of peeling or breakage between the pixel definition layer 22 and the second insulating layer 212, in some embodiments, the orthogonal projection of the third surface 2201 on the substrate 1 is located within the orthogonal projection of the first surface 21201 on the substrate 1 in a direction perpendicular to the surface of the substrate 1.

[0082] Please see Figures 3-5 The pixel definition layer 22 constituting the dam 2 is an independent and complete film structure that extends along the extension direction of the plane where the substrate 1 is located.

[0083] At this time, along the extension direction of the plane where the substrate 1 is located, the third surface 2201 extends continuously and connects the third end face 2202 and the fourth end face 2203.

[0084] Correspondingly, the pixel definition layer 22 also has a fourth surface, which is located on the side of the third surface 2201 facing away from the substrate 1, and the fourth surface extends continuously and connects the third end face 2202 and the fourth end face 2203.

[0085] After the above-mentioned dam 2 is prepared, in subsequent processes, a first encapsulation layer can be prepared on the side of the dam 2 facing away from the substrate 1, and a second encapsulation layer can be prepared on the side of the dam 2 facing the display area 110. Then a third encapsulation layer is prepared to cover the first encapsulation layer and the second encapsulation layer.

[0086] Specifically, the materials of the first and third encapsulation layers include inorganic materials, and the first and third encapsulation layers can be prepared by chemical vapor deposition (CVD).

[0087] The encapsulation film prepared by chemical vapor deposition (CVD) exhibits excellent adhesion and step coverage, effectively covering surfaces with complex morphologies to ensure uniform encapsulation protection on the side of the prepared dam 2 facing away from the substrate 1. Furthermore, the film prepared by CVD also boasts advantages such as relatively uniform thickness and good density, effectively blocking the intrusion of external moisture, oxygen, impurities, etc., thus contributing to improved device stability and reliability.

[0088] Specifically, the second encapsulation layer is prepared using inkjet printing (IJP) technology. The second encapsulation layer prepared by IJP can achieve uniform film spreading and has good leveling properties, effectively covering and filling the display area 110 and the space formed between the display area 110 and the dam 2.

[0089] The material of the second encapsulation layer includes organic materials.

[0090] Since the pixel definition layer 22 in this embodiment is a complete film structure and the pixel definition layer 22 and the second insulating layer 212 can contact each other through the first surface 21201 and the third surface 2201, the problem of film peeling and breakage formed on the dam 2 can be effectively improved. As a result, the first encapsulation layer covering the dam 2 can provide a better encapsulation effect for the dam 2 and help improve the printing leveling effect of the second encapsulation layer.

[0091] It is understood that the display panel 10 provided in this application embodiment can optimize the processing technology of the display panel 10 by adjusting the structure of the dam 2 on the basis of the relevant processing technology, without changing the processing technology and the overall physical size of the dam 2, and improve the packaging effect of the display panel 10, reduce the reliability risk of the display panel 10 caused by the poor structure of the dam 2, and further improve the process performance and reliability of the display panel 10.

[0092] Based on the same inventive concept, this application also provides a display device 100, including the display panel 10 described in any of the above claims. Please refer to [link to relevant documentation]. Figure 6 .

[0093] For details regarding the specific structure of the display panel 10, please refer to the specific description in the foregoing embodiments, which will not be repeated here.

[0094] The display device 100 provided in this embodiment can be a mobile phone, laptop, tablet computer, smartwatch, smart bracelet, navigator, monitor, personal digital assistant (PDA) or other products or components with display functions.

[0095] Since the display device 100 has the aforementioned display panel 10, the display device 100 has at least the beneficial effects of any one or more of the aforementioned display panels 10. The specific effects are as described above and will not be repeated here.

[0096] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized by, The display panel includes a display area and a non-display area, wherein the non-display area at least partially surrounds the display area, and the display panel further includes: Substrate; A dam, located on one side of the substrate and in the non-display area, the dam comprising a stacked insulating layer and a pixel definition layer, the pixel definition layer being located on the side of the insulating layer facing away from the substrate; The dam has a first end face on the side near the display area and a second end face on the side away from the display area. Along a direction perpendicular to the surface of the substrate, the orthographic projection of the first end face on the substrate and the orthographic projection of the second end face on the substrate are both located on the orthographic projection of the insulating layer on the substrate.

2. The display panel of claim 1, wherein, Along a direction perpendicular to the plane of the substrate, the orthogonal projection of the pixel definition layer on the substrate lies inside the orthogonal projection of the insulating layer on the substrate.

3. The display panel of claim 1, wherein, The insulating layer includes a first insulating layer and a second insulating layer stacked together, the second insulating layer being located on the side of the first insulating layer facing away from the substrate, and the second insulating layer having at least a portion of the first end face and at least a portion of the second end face; Along a direction perpendicular to the surface of the substrate, the orthogonal projection of the pixel definition layer on the substrate lies within the orthogonal projection of the second insulating layer on the substrate.

4. The display panel of claim 3, wherein, The second insulating layer includes a first surface and a second surface, wherein the first surface is located on the side of the second surface facing away from the substrate; The second insulating layer contacts the side surface of the pixel definition layer near the substrate through the first surface, and the second insulating layer contacts the side surface of the first insulating layer opposite to the substrate through the second surface.

5. The display panel according to claim 4, characterized in that, The orthographic projection of the first surface onto the substrate lies within the orthographic projection of the second surface onto the substrate.

6. The display panel of claim 4, wherein, The pixel definition layer has a third surface, which is located on the side of the pixel definition layer closer to the substrate; Along a direction perpendicular to the plane where the substrate is located, the orthogonal projection of the third surface onto the substrate lies within the orthogonal projection of the second insulating layer onto the substrate; Wherein, along a direction perpendicular to the plane where the substrate is located, the orthogonal projection of the third surface on the substrate is located within the orthogonal projection of the second surface on the substrate; Alternatively, along a direction perpendicular to the plane of the substrate, the orthogonal projection of the third surface onto the substrate lies within the orthogonal projection of the first surface onto the substrate.

7. The display panel of claim 6, wherein, The pixel definition layer has a third end face and a fourth end face. The third end face is located on the side of the pixel definition layer closer to the display area, and the fourth end face is located on the side of the pixel definition layer away from the display area. Along the extension direction of the plane containing the substrate, the third surface extends continuously and connects the third end face and the fourth end face.

8. The display panel of any of claims 3-7, wherein, Along a direction perpendicular to the plane of the substrate, the orthographic projection of the first insulating layer on the substrate lies within the orthographic projection of the second insulating layer on the substrate.

9. The display panel of claim 8, wherein, Along a direction perpendicular to the plane of the substrate, the orthographic projection of the first insulating layer on the substrate at least partially coincides with the orthographic projection of the pixel definition layer on the substrate.

10. The display panel of claim 9, wherein, The orthographic projection of the first insulating layer on the substrate lies within the orthographic projection of the pixel defining layer on the substrate.

11. The display panel of claim 1, wherein, At least a portion of the dam is disposed around the display area in a direction perpendicular to the plane of the substrate, and at least a portion of the orthogonal projection of the dam onto the substrate surrounds the orthogonal projection of the display area onto the substrate.

12. A display device, characterized by comprising: The display panel includes any one of claims 1-11.

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