Display panel and display device

Abstract

The application provides a display panel and a display device, and relates to the technical field of display, the display panel comprises a substrate, a light emitting unit, a plurality of dams and an encapsulation layer, at least part of the light emitting unit is located in a display area and on one side of the substrate in a thickness direction, the dams are located in a non-display area, and the dams are arranged around the display area, and the plurality of dams are arranged at intervals in a direction of the non-display area pointing to the display area. The encapsulation layer covers the light emitting unit and the dams, and the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer arranged in sequence in a direction away from the substrate. Wherein, the orthographic projection of the dam on the substrate is located in the orthographic projection of the organic encapsulation layer on the substrate, at least one side surface of at least one dam away from the substrate is provided with at least one first recess, and part of the organic encapsulation layer and the first inorganic encapsulation layer is recessed towards the first recess. The display panel provided by the application is beneficial to improving the use performance of the display device.

Description

Technical Field

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

[0002] Currently, organic light-emitting diode (OLED) display panels have advantages such as high image quality, energy saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0003] However, the performance and manufacturing process of current display devices need to be improved. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and a display device to improve the performance of the display device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a display panel including a display area and a non-display area, with at least a portion of the non-display area surrounding the display area. The display panel includes a substrate, light-emitting units, a plurality of dams, and an encapsulation layer. At least a portion of the light-emitting units is located in the display area and on one side of the substrate in the thickness direction. The dams are located in the non-display area and are disposed around the display area. The plurality of dams are spaced apart along the direction from the non-display area to the display area. The encapsulation layer covers the light-emitting units and the dams, and the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer disposed sequentially in a direction away from the substrate. The orthographic projection of the dams onto the substrate lies within the orthographic projection of the organic encapsulation layer onto the substrate. At least one first recess is provided on the surface of at least one dam facing away from the substrate, and portions of the organic encapsulation layer and the first inorganic encapsulation layer are recessed toward the first recess.

[0007] With the above technical solution, after the organic encapsulation layer and the first inorganic encapsulation layer are recessed towards the first recessed portion, it is beneficial to disperse the stress of the portion of the encapsulation layer located on the side of the dam away from the substrate, and to solve the peeling problem between the first inorganic encapsulation layer and the organic film layer in the encapsulation layer, thereby improving the encapsulation effect and thus improving the performance.

[0008] Therefore, the display panel provided in this application is beneficial to improving the performance of the display device.

[0009] In some embodiments, a portion of the first inorganic encapsulation layer is located within the first recess. This increases the degree of recess in the first inorganic encapsulation layer, which is beneficial for improving the stress dispersion effect.

[0010] Optionally, a portion of the organic encapsulation layer is located within the first recess. This increases the depth of the recess in the organic encapsulation layer, which is beneficial for improving stress dispersion.

[0011] In some embodiments, the display panel provided in this application further includes a transition connection portion, which is located between two adjacent dams and integrally connected with the two adjacent dams. The distance between the surface of the transition connection portion away from the substrate and the substrate is less than the distance between the surface of the dam away from the substrate and the substrate. The orthographic projection of the transition connection portion on the substrate is located within the orthographic projection of the organic encapsulation layer on the substrate.

[0012] In this way, a groove can be formed on the side of the transition connection that is away from the substrate, and the first inorganic encapsulation layer and the organic encapsulation layer can be recessed toward the groove, which helps to disperse stress and thus improve the performance.

[0013] In some embodiments, a second recess is provided on the side of the transition connection portion facing away from the substrate, with portions of the organic encapsulation layer and the first inorganic encapsulation layer recessed towards the second recess. This further facilitates stress dispersion, thereby improving the performance.

[0014] Optionally, a portion of the first inorganic encapsulation layer is located within the second recess. This increases the degree of recess in the first inorganic encapsulation layer, which is beneficial for improving the stress dispersion effect.

[0015] Optionally, a portion of the organic encapsulation layer is located within the second recess. This increases the depth of the recess in the organic encapsulation layer, which is beneficial for improving stress dispersion.

[0016] In some embodiments, the surface of the dam closer to the display area among the multiple dams has a third recess, with portions of the organic encapsulation layer and the first inorganic encapsulation layer recessed towards the third recess. This further facilitates stress dispersion, thereby improving the performance.

[0017] Optionally, a portion of the first inorganic encapsulation layer is located within the third recess. This increases the degree of recess in the first inorganic encapsulation layer, which is beneficial for improving the stress dispersion effect.

[0018] Optionally, a portion of the organic encapsulation layer is located within the third recess. This increases the depth of the recess in the organic encapsulation layer, which is beneficial for improving stress dispersion.

[0019] In some embodiments, the surface of the dam closer to the non-display area is adjacent to the first inorganic encapsulation layer and has a fourth recess. A portion of the first and second inorganic encapsulation layers is recessed towards the fourth recess. This improves the encapsulation effect of the first and second inorganic encapsulation layers, effectively blocking water and oxygen and preventing them from entering the organic encapsulation layer.

[0020] Optionally, a portion of the first inorganic encapsulation layer is located within the fourth recess. This increases the depth of the recess in the first inorganic encapsulation layer, which is beneficial for improving the encapsulation effect.

[0021] Optionally, a portion of the second inorganic encapsulation layer is located within the fourth recess. This increases the depth of the organic encapsulation layer, which is beneficial for improving the encapsulation effect.

[0022] In some implementations, the plurality of dams includes a first dam and a second dam, the first dam being located on the side of the second dam closer to the display area, the dam being closer to the display area of ​​the plurality of dams being the first dam, and the dam being closer to the non-display area of ​​the plurality of dams being the second dam.

[0023] In some embodiments, the orthographic projection of the side of the dam facing away from the substrate onto the substrate lies within the orthographic projection of the side of the dam facing the substrate onto the substrate.

[0024] Optionally, the display panel includes a first axis perpendicular to the substrate, and a dam is disposed around the first axis; wherein the distance between the surface of the dam facing the display area and the first axis gradually increases in the direction away from the substrate, and / or the distance between the surface of the dam facing the non-display area and the first axis gradually increases in the direction away from the substrate.

[0025] In some embodiments, the display panel provided in this application includes a pixel definition layer located between a substrate and a packaging layer. The pixel definition layer has pixel openings, and at least a portion of the light-emitting units are located within the pixel openings.

[0026] Optionally, the display panel includes an isolation structure located between the pixel definition layer and the encapsulation layer, the isolation structure enclosing an isolation opening that communicates with the pixel opening.

[0027] Secondly, this application provides a display device that includes the display panel of any of the above embodiments. The display device provided by this application has the same or similar technical effects as the display panel of any of the above embodiments, and will not be described again here. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of this application;

[0030] Figure 2 For along Figure 1 Cross-sectional view of the structure along line AA or line BB;

[0031] Figure 3 for Figure 2 One of the magnified views of a section at point C;

[0032] Figure 4 for Figure 2 Second magnified view of a section at point C;

[0033] Figure 5 for Figure 2 One of the magnified views of a section at point D;

[0034] Figure 6 for Figure 2 Second magnified view of a section at point D;

[0035] Figure 7 for Figure 2 The third magnified view of a section at point D;

[0036] Figure 8 for Figure 2 Part 4 of the enlarged view at point D;

[0037] Figure 9 for Figure 2 Fifth magnified view of a section at point D;

[0038] Figure 10 for Figure 2 The sixth magnified view of a section at point D;

[0039] Figure 11 for Figure 2 Part 7 of the enlarged view at point D;

[0040] Figure 12 for Figure 2 Partial magnified view of point D, number eight;

[0041] Figure 13 for Figure 2 The ninth magnified view of a section at point D;

[0042] Figure 14 for Figure 2 The tenth magnified view of a section at point D;

[0043] Figure 15 for Figure 2 Part eleven of the enlarged views at point D in the middle;

[0044] Figure 16 for Figure 2 Partial magnified view of point D, number 12;

[0045] Figure 17 for Figure 2 Partial magnified view of point D, number thirteen;

[0046] Figure 18 for Figure 2 The fourteenth magnified view of a section at point D;

[0047] Figure 19 for Figure 2 Partial magnified view of point D, number fifteen;

[0048] Figure 20 for Figure 2 The sixteenth magnified view of a section at point D;

[0049] Figure 21 for Figure 2 The seventeenth magnified view of a section at point D;

[0050] Figure 22 for Figure 2 The eighteenth magnified view of a section at point D;

[0051] Figure 23 for Figure 2 The nineteenth magnified view of a section at point D.

[0052] The following are the labeling elements in the figure:

[0053] 100 - Display panel; 110 - Display area; 120 - Non-display area; 121 - Bezel area; 122 - Hole area;

[0054] 1-Substrate; 2-First gate dielectric layer; 3-Capacitor dielectric layer; 4-Buffer layer; 5-Second gate dielectric layer; 6-Interlayer dielectric layer; 7-First planarization layer; 8-Second planarization layer; 9-Pixel definition layer; 91-Isolation structure;

[0055] 10-Light-emitting unit; 101-First electrode; 102-Light-emitting layer; 103-Second electrode; 11-Bottom light-shielding layer; 12-First active layer; 13-First conductive layer; 14-Second conductive layer; 15-Second active layer; 16-Third conductive layer; 17-Fourth conductive layer; 18-Fifth conductive layer; 191-First inorganic encapsulation layer; 192-Organic encapsulation layer; 193-Second inorganic encapsulation layer;

[0056] 20-Dike; 201-First depression; 202-Second depression; 203-Third depression; 204-Fourth depression; 21-First dike; 22-Second dike; 23-Transition connection. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0060] 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.

[0061] Currently, organic light-emitting diode (OLED) display panels have advantages such as high image quality, energy saving, small thickness and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0062] However, the performance and manufacturing process of current display devices need to be improved.

[0063] This application provides a display device, which can be a mobile phone, television, tablet computer, laptop computer, desktop computer, vehicle display terminal, wearable device, advertising display device, etc.

[0064] Please see Figure 1 , Figure 1 This is a schematic diagram of the planar structure of the display panel 100 provided in the embodiments of this application. The display device provided in the embodiments of this application includes a display panel 100, which can be an organic light-emitting diode (OLED) display panel 100 or a micro light-emitting diode (Micro LED / μLED) display panel 100.

[0065] The display panel 100 includes an active area 110 (AA) and a non-display area 120 (NA), at least a portion of which surrounds the active area 110.

[0066] Optionally, the non-display area 120 includes a package area (PA) connected to the display area 110 and a surrounding area (SA) surrounding the package area.

[0067] Optionally, the non-display area 120 can be the border area 121 of the display area 110 near the border.

[0068] Optionally, the non-display area 120 can also be a hole area 122.

[0069] Please refer to the following: Figure 2 and Figure 3 , Figure 2 For along Figure 1 Cross-sectional view of the structure along line AA or line BB. Figure 3 for Figure 2 One of the magnified views at point C in this application shows that the display panel 100 provided in this embodiment includes a substrate 1 and a plurality of light-emitting units 10 located on one side of the substrate 1. The light-emitting units 10 are located in the display area 110. The plurality of light-emitting units 10 include a first light-emitting unit 10, a second light-emitting unit 10 and a third light-emitting unit 10 with different light-emitting colors.

[0070] Optionally, the light-emitting unit 10 includes a first electrode layer, a light-emitting layer 102, and a second electrode layer that are sequentially stacked along a direction away from the substrate 1.

[0071] Optionally, the first electrode layer may include a plurality of first electrodes 101. Optionally, the second electrode layer may include a plurality of second electrodes 103. Optionally, the second electrode layer may be composed of second electrodes 103 deposited over its entire surface.

[0072] Optionally, the first electrode 101 can be an anode, and the second electrode 103 can be a cathode.

[0073] That is, the light-emitting unit 10 may include a first electrode 101, a light-emitting layer 102 and a second electrode 103 arranged sequentially in a direction away from the substrate 1.

[0074] Please continue reading. Figure 2 and Figure 3 The display panel 100 provided in this application embodiment includes a semiconductor device, which is located on one side of the substrate 1 in the thickness direction (Z direction in the figure).

[0075] Optionally, the substrate 1 can be a flexible substrate 1.

[0076] Optionally, the semiconductor device includes a source, a drain, and a gate.

[0077] Optionally, the first electrode layer is electrically connected to the drain, and the second electrode layer is electrically connected to the source.

[0078] Optionally, the display panel 100 provided in this application embodiment includes a driving device layer, which includes a first active layer 12 (Polysilicon, PSI), a first conductive layer 13 (M1), a second conductive layer 14 (M2), a second active layer 15 (Indium Gallium Zinc Oxide, IGZO), a third conductive layer 16 (M3), and a fourth conductive layer 17 (M4) that are sequentially stacked and insulated from each other along a direction away from the substrate 1.

[0079] Optionally, the driving device layer also includes a fifth conductive layer 18 (M5).

[0080] Optionally, the driving device layer includes semiconductor devices.

[0081] The display panel 100 provided in this application embodiment further includes multiple insulating film layers, which include a first gate dielectric layer 2 (GL1), a capacitor dielectric layer 3 (CI), a buffer layer 4, a second gate dielectric layer 5 (GL2), an inter-layer dielectric layer 6 (ILD), a first planarization layer 7 (PLN1), a second planarization layer 8 (PLN2), and a pixel definition layer 9 (PDL) arranged sequentially along the direction away from the substrate 1.

[0082] The first conductive layer 13 is disposed between the first gate dielectric and the capacitor dielectric layer 3, the second conductive layer 14 is disposed between the capacitor dielectric layer 3 and the buffer layer 4, the third conductive layer 16 is disposed between the second gate dielectric layer 5 and the interlayer dielectric layer 6, the fourth conductive layer 17 is disposed between the interlayer dielectric layer 6 and the first planarization layer 7, and the fifth conductive layer 18 is disposed between the first planarization layer 7 and the second planarization layer 8.

[0083] In addition, the first active layer 12 is disposed between the substrate 1 and the first gate dielectric layer 2, the second active layer 15 is disposed between the buffer layer 4 and the second gate dielectric layer 5, the first electrode layer is disposed between the second planarization layer 8 and the pixel definition layer 9, and the pixel definition layer 9 is provided with a pixel opening that exposes a portion of the first electrode layer.

[0084] Optionally, the substrate 1 is provided with a bottom light-shielding layer 11 opposite to the first active layer 12.

[0085] Please continue reading. Figure 2 and Figure 3 Multiple conductive layers are sequentially spaced along the thickness direction of substrate 1 (Z direction in the figure), and the multiple conductive layers are located between substrate 1 and light-emitting unit 10. The conductive layer closer to light-emitting unit 10 can be the fourth conductive layer 17, or the conductive layer closer to light-emitting unit 10 can be the fifth conductive layer 18.

[0086] Optionally, the conductive layers are all metallic layers. For example, the material of the conductive layer may include molybdenum (Mo). Alternatively, the material of the conductive layer may include molybdenum (Mo), aluminum (Al), and titanium (Ti). For example, a conductive layer may include three film layers, the materials of which may be molybdenum (Mo), aluminum (Al), and titanium (Ti), respectively.

[0087] Please refer to the following: Figure 2 and Figure 4 , Figure 4 for Figure 2In the second magnified view at point C, optionally, the display panel 100 provided in this application embodiment includes an isolation structure 91. The isolation structure 91 is located on the side of the pixel definition layer 9 away from the substrate 1. The isolation structure 91 encloses and forms an isolation opening, which is connected to the pixel opening.

[0088] Optionally, the material of the isolation structure 91 may include a metallic material.

[0089] Optionally, the isolation structure 91 may include a first layer and a second layer, the second layer being located on the side of the first layer away from the substrate 1, the material of the first layer may include aluminum (Al), and the material of the second layer may include titanium (Ti).

[0090] Optionally, the isolation structure 91 may further include a third layer located on the side of the first layer facing the substrate 1. Exemplarily, the material of the third layer may include titanium (Ti). Exemplarily, the material of the third layer may include molybdenum (Mo).

[0091] Because the organic light-emitting display panel 100 is easily corroded by moisture and oxygen in the air, resulting in a deterioration in its display effect, the current mainstream process is to create a thin-film encapsulation layer to prevent moisture or oxygen from entering the organic light-emitting display panel 100. When manufacturing the organic light-emitting display panel 100, Barix encapsulation technology is often used, which is an alternating organic-inorganic multilayer film structure achieved through vacuum deposition. In addition to requiring extremely high encapsulation performance, the display area 110, especially the camera MOD area (hole area 122), also needs to prevent water and oxygen from entering through the side cuts of the hole during laser drilling.

[0092] An independent encapsulation structure is required in the aperture area 122 to block or cut off the path of water and oxygen intrusion. Since the aperture area 122 does not participate in the display, the film layer stacking structure is quite different from that of the display area 110. Using organic inkjet printing (Ink Jet Print DAM, IJP) for planarization can increase the film layer density and make it less likely to form pinholes, but it has poor water and oxygen barrier capabilities.

[0093] To seal the light-emitting unit 10, in some embodiments, the display panel 100 provided in this application further includes an encapsulation layer. The encapsulation layer can cover the light-emitting unit 10, thereby encapsulating the light-emitting unit 10. A first inorganic encapsulation layer 191, an organic encapsulation layer 192, and a second inorganic encapsulation layer 193 are sequentially stacked along the direction away from the substrate 1. The first inorganic encapsulation layer 191 is located on the side of the light-emitting unit 10 facing away from the substrate 1. That is, the organic encapsulation layer 192 covers the first inorganic encapsulation layer 191, and the second inorganic encapsulation layer 193 covers the organic encapsulation layer 192.

[0094] Optionally, the first inorganic encapsulation layer 191 can be an inorganic encapsulation layer formed by chemical vapor deposition (CVD) and patterning.

[0095] Alternatively, the organic encapsulation layer 192 can be fabricated by inkjet printing (IJP).

[0096] Alternatively, the second inorganic encapsulation layer 193 may be an inorganic encapsulation layer formed by chemical vapor deposition (CVD).

[0097] Please refer to the following: Figure 2 and Figure 5 , Figure 5 for Figure 2 One of the magnified views at point D in this application embodiment shows that the display panel 100 also includes a dam 20 located in the non-display area 120, and the encapsulation layer covers the dam 20.

[0098] The inventors discovered that the encapsulation layer experiences significant stress concentration on the side of the dam 20 facing away from the substrate 1, which can cause the encapsulation layer to peel off. For example, the first inorganic encapsulation layer 191 and the organic encapsulation layer 192 peel off.

[0099] To resolve the above technical issues, please refer to the following: Figure 2 , Figure 6 , Figure 7 and Figure 8 , Figure 6 for Figure 2 The second magnified view of a section at point D. Figure 7 for Figure 2 The third magnified view of the middle D section. Figure 8 for Figure 2 The fourth partial magnified view at point D shows that this application embodiment provides a display panel 100, which includes a substrate 1, light-emitting units 10, a plurality of dams 20 and an encapsulation layer. At least a portion of the light-emitting units 10 is located in the display area 110 and is located on one side of the substrate 1 in the thickness direction.

[0100] In the display panel 100 provided in this embodiment, the dam 20 is located in the non-display area 120 and is arranged around the display area 110. Multiple dams 20 are spaced apart along the direction from the non-display area 120 to the display area 110. An encapsulation layer covers the light-emitting unit 10 and the dam 20. The encapsulation layer includes a first inorganic encapsulation layer 191, an organic encapsulation layer 192, and a second inorganic encapsulation layer 193 arranged sequentially along the direction away from the substrate 1. The orthographic projection of the dam 20 onto the substrate 1 lies within the orthographic projection of the organic encapsulation layer 192 onto the substrate 1. At least one dam 20 has at least one first recess 201 on its surface away from the substrate 1, and portions of the organic encapsulation layer 192 and the first inorganic encapsulation layer 191 are recessed toward the first recess 201.

[0101] With the above technical solution, after the organic encapsulation layer 192 and the first inorganic encapsulation layer 191 are partially recessed toward the first recess 201, it is beneficial to disperse the stress of the part of the encapsulation layer located on the side of the dam 20 away from the substrate 1, and to solve the peeling problem between the first inorganic encapsulation layer 191 and the organic film layer in the encapsulation layer, thereby improving the encapsulation effect and thus improving the use effect.

[0102] Therefore, the display panel 100 provided in this application embodiment is beneficial to improving the performance of the display device.

[0103] Understandably, the first recess 201 can be formed by etching. For example, a slit below the resolution of the exposure machine can be created using a grayscale mask. This slit area blocks part of the light source to achieve a half-exposure effect. At the same time, some photoresist micro-residue will remain due to the diffraction of light from the slit, resulting in a slightly blurred development pattern.

[0104] Optionally, the plurality of dams 20 includes a first dam 21 and a second dam 22, the first dam 21 being located on the side of the second dam 22 closer to the display area 110, the dam 20 closer to the display area 110 being the first dam 21, and the dam 20 closer to the non-display area 120 being the second dam 22.

[0105] For example, please refer to Figure 6 One of the multiple dams 20 closer to the display area 110 has at least one first recess 201 on the side of its surface facing away from the substrate 1. For example, the first dam 21 has two first recesses 201 on the side facing away from the substrate 1.

[0106] For example, please refer to Figure 7 One of the multiple dams 20, the one closer to the non-display area 120, has at least one first recess 201 on the side of its surface facing away from the substrate 1. For example, the second dam 22 has two first recesses 201 on the side facing away from the substrate 1.

[0107] For example, please refer to Figure 8 Each dam 20 has at least one first recess 201 on the side of its surface facing away from the substrate 1. For example, the first dam 21 has two first recesses 201 on the side of its surface facing away from the substrate 1, and the second dam 22 has two first recesses 201 on the side of its surface facing away from the substrate 1.

[0108] Please continue reading. Figure 6 , Figure 7 and Figure 8 In some embodiments, a portion of the first inorganic encapsulation layer 191 is located within the first recess 201. This increases the degree of recess in the first inorganic encapsulation layer 191, which is beneficial for improving the stress dispersion effect. In addition, the sidewalls of the first recess 201 can limit the portion of the first inorganic encapsulation layer 191 located within the first recess 201, which helps to prevent the first inorganic encapsulation layer 191 from peeling off.

[0109] Optionally, a portion of the organic encapsulation layer 192 is located within the first recess 201. This increases the degree of recess in the organic encapsulation layer 192, which is beneficial for improving the stress dispersion effect. In addition, the sidewalls of the first recess 201 can limit the portion of the organic encapsulation layer 192 located within the first recess 201, which helps to prevent the organic encapsulation layer 192 from peeling off.

[0110] Please refer to the following: Figure 9 , Figure 10 and Figure 11 , Figure 9 for Figure 2 Fifth magnified view of a section at point D. Figure 10 for Figure 2 The sixth magnified view of a section at point D. Figure 11 for Figure 2 The seventh magnified view at point D. In some embodiments, the display panel 100 provided in this application further includes a transition connection portion 23, which is located between two adjacent dams 20 and is integrally connected to the two adjacent dams 20. The distance between the surface of the transition connection portion 23 facing away from the substrate 1 and the substrate 1 is less than the distance between the surface of the dam 20 facing away from the substrate 1 and the substrate 1. The orthographic projection of the transition connection portion 23 on the substrate 1 lies within the orthographic projection of the organic encapsulation layer 192 on the substrate 1.

[0111] In this way, a groove can be formed on the side of the transition connection portion 23 facing away from the substrate 1, and the first inorganic encapsulation layer 191 and the organic encapsulation layer 192 can be recessed toward the groove, which helps to disperse stress and thus improve the performance. In addition, the sidewall of the groove can limit the portion of the first inorganic encapsulation layer 191 and the organic encapsulation layer 192 located in the first recess 201, which helps to prevent the first inorganic encapsulation layer 191 and the organic encapsulation layer 192 from peeling off.

[0112] In addition, the transition connection 23 is integrally connected with the two adjacent dams 20, which facilitates the simultaneous fabrication and forming of the dams 20 and the transition connection 23.

[0113] For example, please refer to the following: Figure 6 and Figure 9 ,exist Figure 6 A transition connection portion 23 can be provided on the basis of the display panel 100 shown to form a Figure 9 The display panel 100 shown.

[0114] For example, please refer to the following: Figure 7 and Figure 10 ,exist Figure 7 A transition connection portion 23 can be provided on the basis of the display panel 100 shown to form a Figure 10 The display panel 100 shown.

[0115] For example, please refer to the following: Figure 8 and Figure 11 ,exist Figure 8 A transition connection portion 23 can be provided on the basis of the display panel 100 shown to form a Figure 11 The display panel 100 shown.

[0116] In some embodiments, please refer to the following: Figure 12 , Figure 13 and Figure 14 , Figure 12 for Figure 2 The eighth magnified view of a section at point D. Figure 13 for Figure 2 The ninth magnified view of a section at point D. Figure 14 for Figure 2 The tenth magnified view of a portion at point D. A second recess 202 is provided on the side of the transition connection portion 23 facing away from the substrate 1, with portions of the organic encapsulation layer 192 and the first inorganic encapsulation layer 191 recessed towards the second recess 202. This further facilitates stress dispersion, thereby improving the performance.

[0117] Optionally, a portion of the first inorganic encapsulation layer 191 is located within the second recess 202. This increases the degree of recess in the first inorganic encapsulation layer 191, which is beneficial for improving the stress dispersion effect. In addition, the sidewalls of the second recess 202 can limit the portion of the first inorganic encapsulation layer 191 located within the second recess 202, which helps to prevent the first inorganic encapsulation layer 191 from peeling off.

[0118] Optionally, a portion of the organic encapsulation layer 192 is located within the second recess 202. This increases the depth of the recess in the organic encapsulation layer 192, which is beneficial for improving the stress dispersion effect. In addition, the sidewalls of the second recess 202 can limit the portion of the organic encapsulation layer 192 located within the second recess 202, which helps to prevent the organic encapsulation layer 192 from peeling off.

[0119] For example, please refer to the following: Figure 9 and Figure 12 ,exist Figure 9 The transition connection portion 23 of the display panel 100 shown has a second recess 202 on the side surface facing away from the substrate 1, which can form Figure 12 The display panel 100 shown.

[0120] For example, please refer to the following: Figure 10 and Figure 13 ,exist Figure 10 The transition connection portion 23 of the display panel 100 shown has a second recess 202 on the side surface facing away from the substrate 1, which can form Figure 13 The display panel 100 shown.

[0121] For example, please refer to the following: Figure 11 and Figure 14 ,exist Figure 11 The transition connection portion 23 of the display panel 100 shown has a second recess 202 on the side surface facing away from the substrate 1, which can form Figure 14 The display panel 100 shown.

[0122] Understandably, the second recess 202 can also be formed by etching.

[0123] In some embodiments, please refer to the following: Figure 15 , Figure 16 and Figure 17 , Figure 15 for Figure 2 Part eleven of the magnified views at point D in the middle. Figure 16 for Figure 2 The twelfth magnified view of a section at point D. Figure 17 for Figure 2Partial magnified view at point D, number thirteen. One of the multiple dams 20 closer to the display area 110 (e.g., the first dam 21) has a third recess 203 on its surface facing the display area 110. A portion of the organic encapsulation layer 192 and the first inorganic encapsulation layer 191 are recessed towards the third recess 203. This further facilitates stress dispersion, thereby improving the performance.

[0124] For example, the surface of the first dam 21 facing the display area 110 is provided with a third recess 203.

[0125] Optionally, a portion of the first inorganic encapsulation layer 191 is located within the third recess 203. This increases the degree of recess in the first inorganic encapsulation layer 191, which is beneficial for improving the stress dispersion effect. In addition, the sidewalls of the third recess 203 can limit the portion of the first inorganic encapsulation layer 191 located within the second recess 202, which helps to prevent the first inorganic encapsulation layer 191 from peeling off.

[0126] Optionally, a portion of the organic encapsulation layer 192 is located within the third recess 203. This increases the depth of the recess in the organic encapsulation layer 192, which is beneficial for improving the stress dispersion effect. Furthermore, the sidewalls of the third recess 203 can limit the portion of the organic encapsulation layer 192 located within the third recess 203, which helps to prevent the organic encapsulation layer 192 from peeling off.

[0127] For example, please refer to the following: Figure 6 and Figure 15 ,exist Figure 6 The first dam 21 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 15 The display panel 100 shown.

[0128] For example, please refer to the following: Figure 7 and Figure 16 ,exist Figure 7 The first dam 21 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 16 The display panel 100 shown.

[0129] For example, please refer to the following: Figure 8 and Figure 17 ,exist Figure 8 The first dam 21 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 17 The display panel 100 shown.

[0130] In some embodiments, please refer to the following: Figure 18 , Figure 19 and Figure 20 , Figure 18 for Figure 2 The fourteenth magnified view of a section at point D. Figure 19 for Figure 2 The fifteenth magnified view of a section at point D. Figure 20 for Figure 2 Partial magnified view at point D, number sixteen. One of the multiple dams 20 closer to the non-display area 120 (e.g., the second dam 22) has its surface facing the non-display area 120 adjacent to the first inorganic encapsulation layer 191. The surface of the second dam 22 facing the non-display area 120 has a fourth recess 204. A portion of the first inorganic encapsulation layer 191 and the second inorganic encapsulation layer 193 is located within this fourth recess 204. This improves the encapsulation effect of the first inorganic encapsulation layer 191 and the second inorganic encapsulation layer 193, effectively blocking water and oxygen and preventing them from entering the organic encapsulation layer 192.

[0131] For example, the surface of the second dam 22 facing the non-display area 120 is adjacent to the first inorganic encapsulation layer 191, and the surface of the second dam 22 facing the non-display area 120 is provided with a fourth recess 204. Here, "adjacent" means that the two are adjacent and connected, with no other components between them. For instance, the surface of the second dam 22 facing the non-display area 120 is adjacent to and in direct contact with the first inorganic encapsulation layer 191, and there are no other film layers between the surface of the second dam 22 facing the non-display area 120 and the first inorganic encapsulation layer 191.

[0132] Optionally, a portion of the first inorganic encapsulation layer 191 is located within the fourth recess 204. This increases the depth of the recess in the first inorganic encapsulation layer 191, which is beneficial for improving the encapsulation effect. Furthermore, the sidewalls of the fourth recess 204 can limit the portion of the first inorganic encapsulation layer 191 located within the fourth recess 204, helping to prevent the first inorganic encapsulation layer 191 from peeling off, thereby improving the encapsulation effect.

[0133] Optionally, a portion of the second inorganic encapsulation layer 193 is located within the fourth recess 204. This increases the depth of the recess in the organic encapsulation layer 192, which is beneficial for improving the encapsulation effect. Furthermore, the sidewalls of the fourth recess 204 can limit the portion of the second inorganic encapsulation layer 193 located within the fourth recess 204, helping to prevent the second inorganic encapsulation layer 193 from peeling off, thereby improving the encapsulation effect.

[0134] For example, please refer to the following: Figure 6 and Figure 18 ,exist Figure 6 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 18 The display panel 100 shown.

[0135] For example, please refer to the following: Figure 7 and Figure 19 ,exist Figure 7 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 19 The display panel 100 shown.

[0136] For example, please refer to the following: Figure 8 and Figure 20 ,exist Figure 8 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 20 The display panel 100 shown.

[0137] Optionally, please refer to the following as well. Figure 21 , Figure 22 and Figure 23 , Figure 21 for Figure 2 The seventeenth magnified view of a section at point D. Figure 22 for Figure 2 The eighteenth magnified view of a section at point D. Figure 23 for Figure 2 In the enlarged view at point D, the nineteenth section shows that one of the plurality of dams 20 closer to the display area 110 has a third recess 203 on its surface facing the display area 110, and the other of the plurality of dams 20 closer to the non-display area 120 has a fourth recess 204 on its surface facing the non-display area 120. This improves stress concentration in the first inorganic encapsulation layer 191 and the organic encapsulation layer 192, and also improves the encapsulation effect of the first inorganic encapsulation layer 191 and the second inorganic encapsulation layer 193.

[0138] Understandably, in Figure 6 A third recess 203 is provided on the surface of the second dam 22 of the display panel 100 facing the display area 110, and... Figure 6 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 21 The display panel 100 shown is shown. Figure 7 A third recess 203 is provided on the surface of the second dam 22 of the display panel 100 facing the display area 110, and... Figure 7 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 22 The display panel 100 shown is shown. Figure 8A third recess 203 is provided on the surface of the second dam 22 of the display panel 100 facing the display area 110, and... Figure 8 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 23 The display panel 100 shown.

[0139] In addition, Figure 15 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 21 The display panel 100 shown is shown. Figure 16 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 22 The display panel 100 shown is shown. Figure 17 The second dam 22 of the display panel 100 shown is provided with a fourth recess 204 on the surface facing the non-display area 120, which can form Figure 23 The display panel 100 shown.

[0140] Optionally, in Figure 18 The second dam 22 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 21 The display panel 100 shown is shown. Figure 19 The second dam 22 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 22 The display panel 100 shown is shown. Figure 20 The second dam 22 of the display panel 100 shown is provided with a third recess 203 on the side surface facing the display area 110, which can form Figure 23 The display panel 100 shown.

[0141] In some embodiments, the orthographic projection of the side surface of the dam 20 facing away from the substrate 1 onto the substrate 1 is located within the orthographic projection of the side surface of the dam 20 facing the substrate 1 onto the substrate 1. That is, the orthographic projection area of ​​the side surface of the dam 20 facing away from the substrate 1 onto the substrate 1 is smaller than the orthographic projection area of ​​the side surface of the dam 20 facing the substrate 1 onto the substrate 1.

[0142] Optionally, the display panel 100 provided in this application embodiment includes a first axis perpendicular to the substrate 1, and a dam 20 is disposed around the first axis; wherein, the distance between the surface of the dam 20 facing the display area 110 and the first axis gradually increases in the direction away from the substrate 1.

[0143] Optionally, the distance between the surface of the dam 20 facing the non-display area 120 and the first axis gradually increases in the direction away from the substrate 1.

[0144] In this way, the surface of the dam 20 facing the display area 110 and / or the non-display area 120 can be a conical surface, which can allow the encapsulation layer to transition, which helps to improve the problem of stress concentration in the encapsulation layer, thereby helping to avoid the peeling of the encapsulation layer film.

[0145] The display device provided in this application includes the display panel 100 of any of the above embodiments. The display device provided in this application has the same or similar technical effects as the display panel 100 of any of the above embodiments, and will not be described again here.

[0146] The above are merely specific embodiments of this application and are 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 in that, The display panel includes a display area and a non-display area, wherein at least a portion of the non-display area surrounds the display area, and the display panel includes: substrate; A light-emitting unit, at least a portion of which is located in the display area and on one side of the substrate in the thickness direction; Multiple embankments are located in the non-display area and are arranged around the display area, with the multiple embankments spaced apart along the direction from the non-display area to the display area; An encapsulation layer covering the light-emitting unit and the dam, the encapsulation layer comprising a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer sequentially disposed along a direction away from the substrate; Wherein, the orthographic projection of the dam on the substrate is located within the orthographic projection of the organic encapsulation layer on the substrate, and at least one of the surfaces of the dam facing away from the substrate is provided with at least one first recess, and portions of the organic encapsulation layer and the first inorganic encapsulation layer are recessed toward the first recess.

2. The display panel as described in claim 1, characterized in that, A portion of the first inorganic encapsulation layer is located within the first recess; Preferably, a portion of the organic encapsulation layer is located within the first recess.

3. The display panel as described in claim 1, characterized in that, The display panel further includes a transition connection portion located between two adjacent dams and integrally connected to the two adjacent dams. The distance between the surface of the transition connection portion facing away from the substrate and the substrate is less than the distance between the surface of the dam facing away from the substrate and the substrate. The orthographic projection of the transition connection portion on the substrate is located within the orthographic projection of the organic encapsulation layer on the substrate.

4. The display panel as described in claim 3, characterized in that, The transition connection portion has a second recess on the side surface opposite to the substrate, and portions of the organic encapsulation layer and the first inorganic encapsulation layer are recessed toward the second recess. Preferably, a portion of the first inorganic encapsulation layer is located within the second recess; Preferably, a portion of the organic encapsulation layer is located within the second recess.

5. The display panel as described in claim 1, characterized in that, One of the multiple dams closer to the display area has a third recess on its side surface facing the display area, and portions of the organic encapsulation layer and the first inorganic encapsulation layer are recessed toward the third recess. Preferably, a portion of the first inorganic encapsulation layer is located within the third recess; Preferably, a portion of the organic encapsulation layer is located within the third recess.

6. The display panel as described in claim 1, characterized in that, The surface of the dam closer to the non-display area is adjacent to the first inorganic encapsulation layer and is provided with a fourth recess, wherein portions of the first inorganic encapsulation layer and the second inorganic encapsulation layer are recessed toward the fourth recess. Preferably, a portion of the first inorganic encapsulation layer is located within the fourth recess; Preferably, a portion of the second inorganic encapsulation layer is located within the fourth recess.

7. The display panel as described in any one of claims 1 to 6, characterized in that, The plurality of dams includes a first dam and a second dam, wherein the first dam is located on the side of the second dam closer to the display area, the dam that is closer to the display area is the first dam, and the dam that is closer to the non-display area is the second dam.

8. The display panel as described in any one of claims 1 to 6, characterized in that, The orthographic projection of the side surface of the dam facing away from the substrate onto the substrate is located within the orthographic projection of the side surface of the dam facing the substrate onto the substrate. Preferably, the display panel includes a first axis perpendicular to the substrate, and the dam is disposed around the first axis; wherein the distance between the surface of the dam facing the display area and the first axis gradually increases in the direction away from the substrate, and / or the distance between the surface of the dam facing the non-display area and the first axis gradually increases in the direction away from the substrate.

9. The display panel as described in any one of claims 1 to 6, characterized in that, The display panel includes a pixel definition layer located between the substrate and the encapsulation layer, the pixel definition layer having pixel openings, and at least a portion of the light-emitting unit located within the pixel openings; Preferably, the display panel includes an isolation structure located between the pixel definition layer and the encapsulation layer, the isolation structure forming an isolation opening, and the isolation opening communicating with the pixel opening.

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

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