Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a first functional layer arranged on one side of the substrate, and an encapsulation layer. The substrate comprises a display area and a non-display area. The non-display area comprises a hole area, and the substrate is provided with a hole in the hole area. The surface of the substrate adjacent to the first functional layer comprises at least one first groove, and the first groove is arranged between the hole and the display area. The first functional layer extends from the display area to the hole area, and the first functional layer is filled into the first groove. The surface of the substrate is further provided with at least one metal structure, and the metal structure is arranged between the hole and the display area. At least part of the metal structure is arranged in the first groove, or the metal structure is arranged on the side of the first groove adjacent to the hole. The first groove is used for disconnecting the first functional layer in the first groove and the first functional layer outside the first groove, so as to disconnect the metal structure and the first functional layer of the display area. The application can improve the water resistance of the display panel and improve the display performance.

Description

Technical Field

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

[0002] With the development of display technology, people have higher and higher requirements for the display performance of display panels. However, the display performance around the camera hole of existing display panels is poor. Summary of the Invention

[0003] This invention provides a display panel and a display device to improve the water resistance of the hole area of ​​the display panel and improve the display performance of the display panel.

[0004] According to one aspect of the present invention, a display panel is provided, comprising:

[0005] A substrate, a first functional layer disposed on one side of the substrate, and an encapsulation layer disposed on the side of the first functional layer away from the substrate;

[0006] The substrate includes a display area and a non-display area; the non-display area includes a hole area, the substrate has a hole in the hole area, and the display area surrounds at least a portion of the hole area; the surface of the substrate adjacent to the first functional layer includes at least one first groove, the first groove being disposed between the hole and the display area;

[0007] The first functional layer extends from the display area to the hole area, and the first functional layer fills the first groove;

[0008] The substrate surface is further provided with at least one metal structure, which is disposed between the hole and the display area; at least part of the metal structure is disposed in the first groove or the metal structure is disposed on the side of the first groove adjacent to the hole; the first groove is used to disconnect the first functional layer located in the first groove and the first functional layer located outside the first groove, so that the metal structure is disconnected from the first functional layer located in the display area;

[0009] At least a portion of the encapsulation layer extends from the display area to the edge of the hole and covers the first groove and the metal structure.

[0010] Optionally, the metal structure is provided in a one-to-one correspondence with the first groove, and the metal structure is provided in its corresponding first groove.

[0011] Optionally, the metal structure located within the first groove is insulated from the first functional layer located outside the first groove.

[0012] Optionally, each first groove surrounds at least a portion of the hole, and each metal structure surrounds at least a portion of the hole.

[0013] Optionally, each metal structure includes at least two first metal substructures and at least one second metal substructure. The at least two first metal substructures are arranged sequentially along the direction perpendicular to the substrate. A first organic layer is disposed between adjacent first metal substructures along the direction perpendicular to the substrate. Adjacent first metal substructures are electrically connected through second metal substructures. The second metal substructure is disposed in a through-hole in the first organic layer.

[0014] Optionally, each metal structure includes two first metal substructures;

[0015] Optionally, the combined shape of two adjacent first metal substructures and the second metal substructure located between the two adjacent first metal substructures is I-shaped;

[0016] Optionally, the first functional layer located outside the first groove is insulated from the metal structure by a first organic layer;

[0017] Optionally, the first groove is an annular groove, the metal structure is an annular structure, and the first metal substructure is an annular structure; the first groove surrounds the hole, the metal structure surrounds the hole, and the first metal substructure surrounds the hole.

[0018] Optionally, the distance between the surface of the first metal substructure furthest from the substrate and the substrate is greater than the distance between the surface of the first functional layer outside the first groove in the via region and the substrate, and the distance between the surface of the first metal substructure furthest from the substrate and the surface of the first functional layer outside the first groove in the via region and the substrate is greater than 0 and less than or equal to 0.1 micrometers; or,

[0019] The distance between the surface of the metal structure away from the substrate and the substrate is less than the distance between the surface of the first functional layer adjacent to the substrate outside the first groove in the hole region and the substrate. The surface of the metal structure away from the substrate is located in the first groove. The distance between the surface of the metal structure away from the substrate and the surface of the first functional layer adjacent to the substrate outside the first groove in the hole region is greater than 0 and less than or equal to 0.1 micrometers.

[0020] Optionally, the depth of the first groove is greater than the distance between the first surface of the first functional layer located within the first groove and the bottom surface of the first groove; wherein, the first surface of the first functional layer is the surface of the first functional layer that is away from the bottom surface of the first groove.

[0021] Optionally, an insulating layer is further provided in the first groove, and a first functional layer is disposed on the side of the insulating layer away from the substrate. The depth of the first groove is greater than the sum of the thicknesses of the insulating layer and the first functional layer. The insulating layer extends from the display area to the hole area.

[0022] Optionally, the depth of the first groove is greater than or equal to 2 micrometers and less than or equal to 4 micrometers, the width of the first groove is greater than or equal to 5 micrometers and less than or equal to 7 micrometers, and the spacing between adjacent first grooves is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

[0023] Optionally, the display panel may also include:

[0024] A dam is located between the first recess and the display area, and the dam surrounds at least a portion of the first recess and the metal structure;

[0025] The surface of the dam away from the substrate is provided with at least one second groove, each second groove surrounding at least a portion of the first groove and the metal structure;

[0026] The first functional layer covers the surface of the dam away from the substrate and fills the second groove, which is used to disconnect the first functional layer located inside the second groove from the first functional layer located outside the second groove.

[0027] Optionally, a dam is used to block the organic layer in the encapsulation layer.

[0028] Optionally, the dam may be located in the hole area.

[0029] Optionally, the dam is a ring dam, surrounding the first groove and the metal structure.

[0030] The second groove is an annular groove, surrounding the first groove and the metal structure.

[0031] Optionally, the depth of the second groove is greater than the thickness of the first functional layer.

[0032] Optionally, the depth of the second groove is greater than or equal to 0.1 micrometers, and the width of the second groove is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

[0033] Optionally, a second organic layer is also provided in the second groove. The second organic layer is disposed on the side of the first functional layer in the second groove away from the bottom of the second groove, and the second organic layer is used to flatten the second groove.

[0034] Optionally, the distance between the surface of the second organic layer away from the bottom of the second groove and the second surface of the first functional layer away from the surface of the dam away from the substrate is less than or equal to 0.1 micrometers; wherein the second surface of the first functional layer is the surface of the first functional layer outside the second groove away from the dam.

[0035] Optionally, the surface of the second organic layer away from the bottom of the second groove is flush with the second surface of the first functional layer away from the surface of the dam on the substrate.

[0036] Optionally, the first functional layer includes a light-emitting functional layer and a first electrode layer stacked sequentially, wherein the first electrode layer is disposed on the side of the light-emitting functional layer away from the substrate;

[0037] The hole is used to mount the optical sensor.

[0038] Optionally, the optical sensor includes a camera.

[0039] Optionally, the light-emitting functional layer includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0040] According to another aspect of the present invention, a display panel is provided, comprising:

[0041] A substrate, a first functional layer disposed on one side of the substrate, and an encapsulation layer disposed on the side of the first functional layer away from the substrate;

[0042] The substrate includes a display area and a non-display area; the non-display area includes a hole area, the substrate has holes in the hole area, and the display area surrounds at least a portion of the hole area;

[0043] At least one metal structure is disposed on the substrate surface, the metal structure being disposed between the hole and the display area, and a dam is also disposed on the substrate surface, the dam being located between the metal structure and the display area;

[0044] At least one second groove is provided on the surface of the dam away from the substrate;

[0045] The first functional layer extends from the display area to the aperture area, covers the surface of the dam away from the substrate, and fills the second groove; the second groove is used to disconnect the first functional layer located in the second groove from the first functional layer located outside the second groove.

[0046] According to another aspect of the present invention, a display device is provided, including a display panel according to any embodiment of the present invention.

[0047] In the display panel of this invention, at least one first groove is provided on the surface of the substrate adjacent to the first functional layer. The first groove is provided in the hole area. The first functional layer extends from the display area to the hole area and fills the first groove. The substrate surface is also provided with one or more metal structures. The metal structures are provided in the hole area. At least part of the metal structures are provided in the first groove or on one side of the first groove adjacent to the hole. The first groove disconnects the first functional layer located in the first groove from the first functional layer located outside the first groove, so that the metal structure is disconnected from the first functional layer located in the display area, avoiding the metal structure from becoming charged, thereby preventing the metal structure in the hole area from being corroded or damaged, and improving the water resistance performance of the hole area.

[0048] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 It is a cross-sectional view of a display panel;

[0051] Figure 2 This is a plan view of a display panel provided in an embodiment of the present invention;

[0052] Figure 3 yes Figure 2 A magnified view of a portion of the central display panel;

[0053] Figure 4 yes Figure 3 A cross-sectional view of the display panel along section line AA;

[0054] Figure 5 yes Figure 4 A magnified view of a portion of the central display panel;

[0055] Figure 6 This is a partial enlarged view of another display panel provided in an embodiment of the present invention;

[0056] Figure 7 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0057] Figure 8 This is a cross-sectional view of another display panel provided in an embodiment of the present invention;

[0058] Figure 9 This is a schematic diagram of a display panel provided in an embodiment of the present invention. Detailed Implementation

[0059] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0060] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0061] The display performance around the camera hole in the display panel of the related technology is poor. The inventor found through research that the reason for the above problem is that moisture can easily enter the interior of the display panel through the camera hole, affecting the display performance of the display area around the camera hole.

[0062] For example, Figure 1 This is a cross-sectional view of a display panel, for reference. Figure 1 The substrate 30 of the display panel includes a display area 10 and a non-display area. The non-display area includes an aperture area 21, which includes apertures 23 for mounting optical sensors such as cameras. Multiple metal structures 60 surround the apertures 23. The first functional layer 40 of the display area 10 extends from the display area 10 to the aperture area 21. Because the first functional layer 40 overlaps with the metal structures 60 of the aperture area 21, the cathode in the first functional layer 40 is a single-layer structure. The overlap between the cathode and the metal structures 60 results in the metal structures 60 being negatively charged. The negatively charged metal structures 60 easily adsorb positively charged ions, such as K+ ions, from the polarizer. In a humid environment, electrochemical reactions easily occur, making the metal structures 60 in the aperture area 21 susceptible to corrosion. Furthermore, the negatively charged metal structures 60 in the aperture area 21 are easily damaged by positive charges during ESD testing. After corrosion or damage, the water-blocking performance of the metal structures 60 is compromised, allowing moisture to easily enter the display area 10 through the aperture area 21.

[0063] To address the above problems, embodiments of the present invention provide a display panel. Figure 2 This is a plan view of a display panel provided in an embodiment of the present invention. Figure 3 yes Figure 2 A magnified view of a portion of the display panel. Figure 4 yes Figure 3 A cross-sectional view of the display panel along section line AA, for reference. Figures 2-4 The display panel includes:

[0064] Substrate 30, first functional layer 40 disposed on one side of substrate 30, and encapsulation layer 50 disposed on the side of first functional layer 40 away from substrate;

[0065] The substrate 30 includes a display area 10 and a non-display area 20; the non-display area 20 includes an aperture area 21, and the substrate 30 has an aperture 23 in the aperture area 21. The display area 10 surrounds at least a portion of the aperture area 21. The surface of the substrate 30 adjacent to the first functional layer 40 includes at least one first groove 31, which is disposed between the aperture 23 and the display area 10. The first functional layer 40 extends from the display area 10 to the aperture area 21, and the first functional layer 40 fills the first groove 31.

[0066] At least one metal structure 60 is also provided on the surface of the substrate 30, and the metal structure 60 is disposed between the hole 23 and the display area 10. At least a portion of the metal structure 60 is disposed within the first groove 31 or on the side of the first groove 31 adjacent to the hole 23; the first groove 31 is used to disconnect the first functional layer 40 located within the first groove 31 and the first functional layer 40 located outside the first groove 31, so that the metal structure 60 is disconnected from the first functional layer 40 located in the display area 10; this is equivalent to the first functional layer 40 located within the first groove 31 and the first functional layer 40 located outside the first groove 31 being insulated and not electrically connected.

[0067] At least a portion of the encapsulation layer 50 extends from the display area 10 to the edge of the hole 23 and covers the first groove 31 and the metal structure 60.

[0068] in, Figure 3 for Figure 2 An enlarged view of the area circled by the dashed box 300. The substrate 30 can be a flexible substrate or a rigid substrate. When the substrate 30 is a flexible substrate, it may include an organic layer, an inorganic layer, and another organic layer stacked sequentially. For example, the substrate 30 may include a polyimide layer, an inorganic layer, and another polyimide layer stacked sequentially. When the substrate 30 is a rigid substrate, it may include a glass substrate. The non-display area 20 may include a hole area 21 and a border area 22, with the border area 22 surrounding the display area 10. The display area 10 is used to display an image, while the non-display area 20 does not display an image. The hole 23 is used to house an optical sensor; for example, the optical sensor may include a camera, etc. The hole 23 may or may not penetrate the substrate 30; this embodiment does not impose a specific limitation.

[0069] The display area 10 surrounds at least a portion of the hole area 21; either the display area 10 completely surrounds the hole area 21, or the display area surrounds a portion of the hole area 21. Optionally, each first groove 31 surrounds at least a portion of the hole 23; the first groove 31 surrounding at least a portion of the hole 23 can be either completely surrounding the hole 23 or surrounding a portion of the hole 23. Optionally, each metal structure 60 surrounds at least a portion of the hole 23. The metal structure 60 surrounding at least a portion of the hole 23 can be either completely surrounding the hole 23 or surrounding a portion of the hole 23. When the display area 10 surrounds the hole area 21, the first groove 31 surrounds the hole 23, and the metal structure 60 surrounds the hole 23. When the display area 10 surrounds a portion of the hole area 21, the first groove 31 surrounds a portion of the hole 23, and the metal structure 60 surrounds a portion of the hole 23.

[0070] The first functional layer 40 may include at least one of the following sequentially stacked layers: a hole injection layer, a hole transport layer, an electron blocking layer, an electron transport layer, and an electron injection layer, as well as a first electrode layer. The first electrode layer is disposed on the side of the electron injection layer away from the substrate 30. The first electrode layer may be a cathode layer or an anode layer; this embodiment does not specifically limit this. The encapsulation layer 50 is used to encapsulate the first functional layer 40 to prevent water and oxygen from corroding the first functional layer 40. The encapsulation layer 50 may include stacked inorganic and organic layers. The inorganic layer of the encapsulation layer 50 may extend from the display area 10 to the edge of the hole 23 and cover the first groove 31 and the metal structure 60.

[0071] The metal structure 60 serves as a water barrier, preventing moisture from entering the display area 10 through the aperture area 21. The metal structure 60 can be made of any metal material with certain water-blocking properties; for example, the metal structure 60 can be made of TiAlTi material.

[0072] At least a portion of the metal structure 60 may be disposed within the first groove 31, or the metal structure 60 may be disposed on one side of the first groove 31 adjacent to the hole 23. This can mean that some metal structures 60 are located within the first groove 31 and some are located outside the first groove, or all metal structures 60 are located within the first groove 31 and all are located on one side of the first groove 31 adjacent to the hole 23. When some metal structures 60 are located within the first groove 31 and some are located outside the first groove 31, the metal structures 60 located outside the first groove 31 can be located on one side of the first groove 31 adjacent to the hole 23.

[0073] The first groove 31 has a certain depth. Due to the height difference between the inside and outside of the first groove 31, the first functional layer 40 is disconnected at the first groove 31. In this way, the first functional layer 40 is disconnected at the first groove 31, and the metal structure 60 of the hole area 21 is disconnected from the first functional layer 40 located in the display area 10, so as to prevent the metal structure 60 from becoming charged, thereby preventing the metal structure 60 of the hole area 21 from being corroded or damaged, and improving the water-resistant performance of the hole area 21.

[0074] In this embodiment of the invention, at least one first groove 31 is provided on the surface of the substrate 30 adjacent to the first functional layer 40 in the display panel. The first groove 31 is located in the hole area 21. The first functional layer 40 extends from the display area 10 to the hole area 21 and fills the first groove 31. The surface of the substrate 30 is also provided with one or more metal structures 60. The metal structures 60 are located in the hole area 21. At least part of the metal structures 60 is located in the first groove 31 or on the side of the first groove 31 adjacent to the hole 23. The first groove 31 disconnects the first functional layer 40 located in the first groove 31 from the first functional layer 40 located outside the first groove 31, so that the metal structure 60 is disconnected from the first functional layer 40 located in the display area 10, preventing the metal structure 60 from becoming charged, thereby preventing the metal structure 60 in the hole area 21 from being corroded or damaged, and improving the water resistance performance of the hole area 21.

[0075] Optionally, the metal structure 60 is provided in a one-to-one correspondence with the first groove 31, and the metal structure 60 is disposed in its corresponding first groove 31.

[0076] Specifically, since the encapsulation layer 50 covers the first functional layer 40 and the metal structure 60, and the metal structure 60 is placed in the first groove 31, the height difference between the metal structure 60 in the hole area 21 and the first functional layer 40 outside the first groove 31 is small, making the encapsulation layer 50 easier to manufacture.

[0077] Optionally, the metal structure 60 located within the first groove 31 is insulated from the first functional layer 40 located outside the first groove 31.

[0078] This design further prevents the metal structure 60 from becoming electrified, avoids corrosion or damage to the metal structure 60 in the hole area 21, and improves the water-blocking performance of the hole area 21.

[0079] Optional, see reference Figure 4Each metal structure 60 includes at least two first metal substructures 61 and at least one second metal substructure 62. The at least two first metal substructures 61 are arranged sequentially along the direction perpendicular to the substrate 30 and along the direction Z perpendicular to the substrate 30. A first organic layer 63 is disposed between adjacent first metal substructures 61, and two adjacent first metal substructures 61 are electrically connected through the second metal substructure 62. The second metal substructure 62 is disposed in a through hole in the first organic layer 63.

[0080] Specifically, the first organic layer 63 may have multiple through-holes surrounding at least a portion of the holes 23, and each through-hole contains a second metal substructure 62. At least two adjacent first metal substructures 61 can be electrically connected through one, two, or more second metal substructures 62. The metal substructures 61, the metal within the through-holes, and the first organic layer 63 all serve to block moisture. The metal substructures 61 can be made of any water-blocking metal material; for example, TiAlTi material can be used.

[0081] refer to Figure 4 At least two first metal substructures 61 and a first organic layer 63 can block water vapor from entering the hole region 21 along water vapor intrusion paths (1) and (3), thus extending the water vapor intrusion paths (1) and (3). A second metal substructure 62 and a first organic layer 63 can block water vapor from entering the hole region 21 along the water vapor intrusion path (2), thus extending the water vapor intrusion path (2). Therefore, by providing each metal structure 60 with at least two first metal substructures 61 and at least one second metal substructure 62 arranged sequentially along the direction perpendicular to the substrate 30, the path of water vapor intruding through the hole region 21 to the display area 10 can be extended, improving the water-blocking performance of the hole region 21. Furthermore, providing a first organic layer 63 can effectively extend the extension path of the cutting crack in the hole 23.

[0082] Optionally, each metal structure 60 includes two metal substructures 61.

[0083] Specifically, the more metal substructures 61 each metal structure 60 includes, the more complex the forming process of the metal structure 60 becomes. Setting each metal structure 60 to include two metal substructures 61 can not only better block moisture intrusion, but also reduce the difficulty of the process.

[0084] Optionally, the combined shape of two adjacent first metal substructures 61 and the second metal substructure 62 located between the two adjacent first metal substructures 61 is I-shaped. This is equivalent to the metal structure 60 having a groove on its first sidewall facing the hole 23 and a groove on its second sidewall facing the display area 10, with the first and second sidewalls of the metal structure 60 being arranged opposite to each other.

[0085] Optionally, the first functional layer 40 located outside the first groove 31 and the metal structure 60 are insulated and spaced apart by the first organic layer 63.

[0086] Specifically, when the surface of the metal structure 60 away from the substrate 10 is higher than the first groove 31, the first layer 63 separates the metal structure 60 from the first functional layer 40 outside the first groove 31, thereby achieving electrical insulation of the first functional layer 40 outside the first groove 31 of the metal structure.

[0087] Optionally, the first groove 31 is an annular groove, the metal structure 60 is an annular structure, and the first metal substructure 61 is an annular structure; the first groove 31 surrounds the hole 23, the metal structure 60 surrounds the hole 23, and the first metal substructure 61 surrounds the hole 23. The second metal substructure 62 surrounds the hole 23.

[0088] Optional, Figure 5 yes Figure 4 A magnified view of a portion of the central display panel, for reference. Figure 4 and Figure 5 The distance between the surface of the first metal substructure 61 furthest from the substrate 10 and the substrate 10 is greater than the distance between the surface of the first functional layer 40 outside the first groove 31 in the hole region 21 and the substrate 10. The distance S between the surface of the first metal substructure 61 furthest from the substrate 30 and the surface of the first functional layer 40 outside the first groove 31 in the hole region and the substrate 30 is less than or equal to 0.1 micrometers; S can be greater than 0. Alternatively, Figure 6 This is a partial enlarged view of another display panel provided in an embodiment of the present invention, for reference. Figure 6 The distance between the surface of the metal structure 60 away from the substrate 10 and the substrate 10 is less than the distance between the surface of the first functional layer 40 outside the first groove 31 in the via region 21 and the substrate 10. The distance D between the surface of the metal structure 60 away from the substrate 30 and the surface of the first functional layer 40 outside the first groove 31 in the via region 21 and the substrate 30 is less than or equal to 0.1 micrometers. D can be greater than 0. The distance, depth, and other parameters between the film layers can be the distance and depth along the thickness direction Z of the substrate.

[0089] For details, please refer to Figure 4 and Figure 5When the distance between the surface of the first metal substructure 61 furthest from the substrate 10 and the substrate 10 is greater than the distance between the surface of the first functional layer 40 outside the first groove 31 in the hole region 21 and the substrate 10, the first organic layer 63 will partially cover the first functional layer 40. When forming the encapsulation layer 50, the encapsulation layer 50 needs to climb from the first functional layer 40 to the first organic layer 63, and then from the first organic layer 63 to the surface of the first metal substructure 61 furthest from the substrate 30. Since the first metal substructure 61 is generally not very thick, the process of climbing from the first organic layer 63 to the surface of the first metal substructure 61 furthest from the substrate 30 has little impact on the manufacturing process of the encapsulation layer 50. If the distance S between the surface of the metal substructure 61 furthest from the substrate 30 adjacent to the substrate 30 and the surface of the first functional layer 40 in the hole region furthest from the substrate 30 is too large, the encapsulation layer 50 will need to climb a large height when climbing to the first organic layer 63 during fabrication, which will increase the difficulty of the fabrication process of the encapsulation layer 50. Setting the distance S between the surface of the metal substructure 61 furthest from the substrate 30 adjacent to the substrate 30 and the surface of the first functional layer 40 outside the first groove 31 in the hole region furthest from the substrate 30 is less than or equal to 0.1 micrometers can reduce the difficulty of the fabrication process of the encapsulation layer 50, improve the film quality of the encapsulation layer 50, and enhance the water resistance performance.

[0090] refer to Figure 4 and Figure 6 When the distance between the surface of the metal structure 60 away from the substrate 10 and the substrate 10 is less than the distance between the surface of the first functional layer 40 outside the first groove 31 in the hole region 21 and the substrate 10, the encapsulation layer 50 will extend from outside the first groove 31 to the surface of the metal structure 60 away from the substrate 30 inside the first groove 31. When the distance D between the surface of the metal structure 60 away from the substrate 30 and the surface of the first functional layer 40 outside the first groove 31 in the hole region 21 adjacent to the substrate 30 is large, the height difference during the fabrication of the encapsulation layer 50 will be greater, and the fabrication difficulty will be greater. Setting the distance D between the surface of the metal structure 60 away from the substrate 30 and the surface of the first functional layer 40 outside the first groove 31 in the hole region adjacent to the substrate 30 is less than or equal to 0.1 micrometers can reduce the fabrication difficulty of the encapsulation layer 50, improve the film formation quality of the encapsulation layer 50, and enhance the water-blocking performance.

[0091] Optionally, the depth of the first groove 31 is greater than the distance between the first surface of the first functional layer 40 located in the first groove 31 and the bottom surface of the first groove 31; wherein, the first surface of the first functional layer 40 is the surface of the first functional layer 40 away from the bottom surface of the first groove 31.

[0092] That is, the first surface of the first functional layer 40 is located inside the first groove 31, and there is a height difference between the first functional layer 40 outside the first groove 31 and the first functional layer 40 inside the first groove 31. This height difference causes the first functional layer 40 to break at the first groove 31.

[0093] Optionally, an insulating layer 70 is also provided in the first groove 31, and a first functional layer 40 is provided on the side of the insulating layer 70 away from the substrate 30. The depth of the first groove 31 is greater than the sum of the thicknesses of the insulating layer 70 and the first functional layer 40. The insulating layer 70 extends from the display area to the hole area 21.

[0094] Specifically, the insulating layer 70 may include a buffer layer, a first insulating layer, a second insulating layer, and a third insulating layer stacked sequentially. The buffer layer is disposed on the surface of the substrate 30, and its surface in the display area 10 is used to fabricate a driving circuit layer. The first, second, and third insulating layers may include a gate insulating layer, an insulating layer between the capacitor plate and other metals, and an insulating layer between the source / drain metals and other metals. The insulating layer 70 extends from the display area 10 to the via area 21 and fills the first groove 31. The depth of the first groove 31 is greater than the sum of the thicknesses of the insulating layer 70 and the first functional layer 40, ensuring a height difference between the first functional layer 40 inside and outside the first groove 31, thus breaking the first functional layer 40 at the first groove 31.

[0095] Optionally, the depth of the first groove 31 is greater than or equal to 2 micrometers and less than or equal to 4 micrometers, the width of the first groove 31 is greater than or equal to 5 micrometers and less than or equal to 7 micrometers, and the spacing between adjacent first grooves 31 is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

[0096] Specifically, if the depth of the first groove 31 is too small, the first functional layer 40 is not easy to disconnect. If the depth of the first groove 31 is too large, the height difference between the metal structure 60 inside the first groove 31 and the first functional layer 40 outside the first groove 31 will be too large, affecting the manufacturing of the encapsulation layer 50. Setting the depth range of the first groove 31 to be greater than or equal to 2 micrometers and less than or equal to 4 micrometers can ensure that the first functional layer 40 is disconnected at the first groove 31 and reduce the manufacturing process difficulty of the encapsulation layer 50.

[0097] If the width of the first groove 31 is too small, the manufacturing process will be difficult. If the width is too large, it will have a significant impact on the structure of the substrate 30 in the hole area 21. Setting the width of the first groove 31 to be in the range of 5 micrometers to 7 micrometers can reduce the manufacturing difficulty and have a smaller impact on the structure of the substrate 30.

[0098] When the spacing between adjacent first grooves 31 is too small, the manufacturing process of the first groove 31 becomes too difficult. When the spacing is too large, if the metal structure 60 is placed in the first groove 31, the number of metal structures 60 will be small, affecting the water-blocking performance. Setting the spacing between adjacent first grooves 31 to be greater than or equal to 5 micrometers and less than or equal to 7 micrometers reduces the manufacturing difficulty while allowing more first grooves 31 and metal structures 60 to be placed in the hole area 21, thus improving the water-blocking performance.

[0099] Figure 7 This is a cross-sectional view of another display panel provided in an embodiment of the present invention. Optionally, refer to... Figure 7 The display panel also includes:

[0100] The dam 80 is located between the first groove 31 and the display area 10, and the dam 80 surrounds at least a portion of the first groove 31 and the metal structure 60.

[0101] At least one second groove 81 is provided on the surface of the dam 80 away from the substrate 30, and each second groove 81 surrounds at least a portion of the first groove 31 and the metal structure 60. A first functional layer 40 covers the surface of the dam 80 away from the substrate 30 and fills the second groove 81, which serves to disconnect the first functional layer 40 located within the second groove 81 from the first functional layer 40 located in the display area 10.

[0102] Specifically, the dam 80 is used to block the organic layer in the encapsulation layer 50, preventing the organic layer from spreading too widely and affecting the size of the non-display area 20. The first functional layer 40 is disconnected by the second groove 81, further ensuring that the metal structure 60 of the hole area 21 is disconnected from the first functional layer 40 located in the display area 10, and ensuring that the metal structure 60 is not charged.

[0103] Optionally, dam 80 is located in hole area 21.

[0104] Optionally, the dam 60 is a ring dam, which surrounds the first groove 31 and the metal structure 60.

[0105] The second groove 81 is an annular groove, and each second groove 81 surrounds the first groove 31 and the metal structure 60.

[0106] Optionally, the depth of the second groove 81 is greater than the thickness of the first functional layer 40, so that there is a height difference between the first functional layer 40 outside the second groove 81 and the first functional layer 40 inside the second groove 81, and the height difference causes the first functional layer 40 to break at the second groove 81.

[0107] Optionally, the depth of the second groove 81 is greater than or equal to 0.1 micrometers, and the width of the second groove 81 is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

[0108] Specifically, the depth of the second groove 81 is greater than or equal to 0.1 micrometers, ensuring that the first functional layer 40 has a large height difference at the second groove 81, thus ensuring that the first functional layer 40 is disconnected.

[0109] If the width of the second groove 81 is too small, the manufacturing process will be difficult; if the width is too large, it will have a significant impact on the structure of the dam 80. Setting the width of the second groove 81 to be greater than or equal to 5 micrometers and less than or equal to 7 micrometers can reduce the manufacturing difficulty and have a smaller impact on the structure of the dam 80.

[0110] Optionally, a second organic layer 90 is also provided in the second groove 81. The second organic layer 90 is disposed on the side of the first functional layer 40 in the second groove 81 away from the bottom of the second groove 81. The second organic layer 90 is used to planarize the second groove 81, so as to ensure that the subsequent encapsulation layer 50 has less manufacturing difficulty.

[0111] Optionally, the distance between the surface of the second organic layer 90 away from the bottom of the second groove 81 and the second surface of the first functional layer 40 away from the surface of the dam 80 away from the substrate 30 is less than or equal to 0.1 micrometers; wherein the second surface of the first functional layer 40 is the surface of the first functional layer 40 away from the dam 80.

[0112] Specifically, when the distance between the surface of the second organic layer 90, which is far from the surface of the second groove 81, and the second surface of the first functional layer 40 on the surface of the dam 80 is large, the encapsulation layer 50 is more difficult to manufacture. Setting the distance between the surface of the second organic layer 90, which is far from the surface of the second groove 81, and the second surface of the first functional layer 40 on the surface of the dam 80, to be less than or equal to 0.1 micrometers can reduce the manufacturing difficulty of the encapsulation layer 50 and improve the film quality of the encapsulation layer 50.

[0113] Optionally, the surface of the second organic layer 90 away from the second groove 81 is flush with the second surface of the first functional layer 40 away from the surface of the second dam 80, ensuring that the subsequent encapsulation layer 50 is less difficult to manufacture.

[0114] It should be noted that the encapsulation layer 50 may include an organic layer 52 and an inorganic layer, with the inorganic layer extending from the display area 10 to the via area 21. The reduction in the manufacturing difficulty of the encapsulation layer 50 mentioned above refers to reducing the manufacturing process difficulty of the inorganic layer in the encapsulation layer 50. For example, the encapsulation layer 50 includes a first inorganic layer 51, an organic layer 52, and a second inorganic layer 53 stacked sequentially, with the first inorganic layer 51 and the second inorganic layer 53 extending to the via area 21.

[0115] Optionally, the first functional layer 40 includes a light-emitting functional layer and a first electrode layer stacked sequentially, with the first electrode layer disposed on the side of the light-emitting functional layer away from the substrate 30; the light-emitting functional layer includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0116] Optionally, the display panel further includes a second electrode layer and a light-emitting layer located in the display area. The light-emitting layer and the light-emitting functional layer located in the display area are disposed between the first electrode layer and the second electrode layer to form a light-emitting device.

[0117] Optionally, the display panel may also include a polarizer located on the side of the encapsulation layer away from the substrate.

[0118] This invention also provides a display panel. Figure 8 This is a cross-sectional view of another display panel provided in an embodiment of the present invention, with reference to... Figure 8 The display panel includes:

[0119] Substrate 10, a first functional layer 40 disposed on one side of substrate 10, and an encapsulation layer 50 disposed on the side of the first functional layer 40 away from substrate 10;

[0120] Substrate 10 includes a display area 11 and a non-display area 20; the non-display area 20 includes a hole area 21, and the substrate 10 has a hole 23 in the hole area 21, and the display area 10 surrounds at least a portion of the hole area 21;

[0121] At least one metal structure 60 is provided on the surface of the substrate 10, and the metal structure 60 is disposed between the hole 23 and the display area 10;

[0122] A dam 80 is also provided on the surface of the substrate 10, located between the metal structure 60 and the display area 10. Optionally, the dam 80 is provided in the hole area 21.

[0123] At least one second groove 81 is provided on the surface of the dam 80 away from the substrate 10;

[0124] The first functional layer 40 extends from the display area 10 to the hole area 21, covers the surface of the dam 80 away from the substrate 10 and fills the second groove 81; the second groove 81 is used to disconnect the first functional layer 40 located in the second groove 81 from the first functional layer 40 located outside the second groove 81.

[0125] In this embodiment of the invention, the first functional layer 40 is disconnected by the second groove 81, ensuring that the metal structure 60 of the hole area 21 is disconnected from the first functional layer 40 located in the display area 10, ensuring that the metal structure 60 is not charged, thereby preventing the metal structure 60 of the hole area 21 from being corroded or damaged by explosion, and improving the water-blocking performance of the hole area 21.

[0126] The metal structure 60 can be used to isolate the first functional layer 40. Since the metal structure 60 isolates the organic materials such as the light-emitting functional layer, hole injection layer, hole transport layer, electron blocking layer, hole blocking layer, electron transport layer and electron injection layer in the first functional layer 40, it can prevent external water and oxygen from entering the display area through the organic materials such as the light-emitting functional layer, which would lead to encapsulation failure.

[0127] Figure 8 The various structures in the technical solution can be combined with Figures 2 to 7 The corresponding structures in the technical solutions are the same or similar, and will not be elaborated here.

[0128] This invention also provides a display device. Figure 9 This is a schematic diagram of a display panel provided in an embodiment of the present invention, for reference. Figure 9 The display device 100 includes the display panel 200 provided in any embodiment of the present invention. The display device 100 can be an electronic device such as a mobile phone or a tablet computer.

[0129] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0130] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display panel, characterized in that, include: A substrate, a first functional layer disposed on one side of the substrate, and an encapsulation layer disposed on the side of the first functional layer away from the substrate; The substrate includes a display area and a non-display area; the non-display area includes a hole area, the substrate has a hole in the hole area, and the display area surrounds at least a portion of the hole area; the surface of the substrate adjacent to the first functional layer includes at least one first groove, the first groove being disposed between the hole and the display area; The first functional layer extends from the display area to the hole area, and the first functional layer fills the first groove; The substrate surface is further provided with at least one metal structure, which is disposed between the hole and the display area; at least a portion of the metal structure is disposed within the first groove or the metal structure is disposed on the side of the first groove adjacent to the hole; the first groove is used to disconnect the first functional layer located within the first groove and the first functional layer located outside the first groove, so that the metal structure is disconnected from the first functional layer located in the display area; At least a portion of the encapsulation layer extends from the display area to the edge of the hole and covers the first groove and the metal structure.

2. The display panel according to claim 1, characterized in that: The metal structure is provided in a one-to-one correspondence with the first groove, and the metal structure is disposed in its corresponding first groove.

3. The display panel according to claim 1, characterized in that: The metal structure located within the first groove is insulated from the first functional layer located outside the first groove.

4. The display panel according to claim 1, characterized in that: Each of the first grooves surrounds at least a portion of the hole, and each of the metal structures surrounds at least a portion of the hole.

5. The display panel according to claim 1, characterized in that: Each of the metal structures includes at least two first metal substructures and at least one second metal substructure. The at least two first metal substructures are arranged sequentially along a direction perpendicular to the substrate. A first organic layer is disposed between adjacent first metal substructures along the direction perpendicular to the substrate. Adjacent first metal substructures are electrically connected through second metal substructures. The second metal substructure is disposed in a through-hole in the first organic layer.

6. The display panel according to claim 5, characterized in that: Each of the aforementioned metal structures comprises two first metal substructures.

7. The display panel according to claim 5, characterized in that: The combined shape of two adjacent first metal substructures and the second metal substructure located between the two adjacent first metal substructures is I-shaped.

8. The display panel according to claim 5, characterized in that: The first functional layer located outside the first groove is insulated from the metal structure by the first organic layer.

9. The display panel according to claim 5, characterized in that: The first groove is an annular groove, the metal structure is an annular structure, and the first metal substructure is an annular structure; the first groove surrounds the hole, the metal structure surrounds the hole, and the first metal substructure surrounds the hole.

10. The display panel according to claim 5, characterized in that: The distance between the surface of the first metal substructure furthest from the substrate and the substrate is greater than the distance between the surface of the first functional layer outside the first groove in the via region and the substrate; the distance between the surface of the first metal substructure furthest from the substrate and the surface of the first functional layer outside the first groove in the via region and the substrate is greater than 0 and less than or equal to 0.1 micrometers; or, The distance between the surface of the metal structure away from the substrate and the substrate is less than the distance between the surface of the first functional layer outside the first groove in the hole region and the substrate. The surface of the metal structure away from the substrate is located within the first groove. The distance between the surface of the metal structure away from the substrate and the surface of the first functional layer outside the first groove in the hole region and the substrate is greater than 0 and less than or equal to 0.1 micrometers.

11. The display panel according to claim 1, characterized in that: The depth of the first groove is greater than the distance between the first surface of the first functional layer located within the first groove and the bottom surface of the first groove; wherein, the first surface of the first functional layer is the surface of the first functional layer that is away from the bottom surface of the first groove.

12. The display panel according to claim 1, characterized in that: An insulating layer is also provided in the first groove, and the first functional layer is disposed on the side of the insulating layer away from the substrate. The depth of the first groove is greater than the sum of the thicknesses of the insulating layer and the first functional layer. The insulating layer extends from the display area to the hole area.

13. The display panel according to claim 1, characterized in that: The depth of the first groove is greater than or equal to 2 micrometers and less than or equal to 4 micrometers, the width of the first groove is greater than or equal to 5 micrometers and less than or equal to 7 micrometers, and the spacing between adjacent first grooves is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

14. The display panel according to claim 1, characterized in that, Also includes: A dam is located between the first groove and the display area, and the dam surrounds at least a portion of the first groove and the metal structure; The surface of the dam away from the substrate is provided with at least one second groove, each second groove surrounding at least a portion of the first groove and the metal structure; The first functional layer covers the surface of the dam away from the substrate and fills the second groove, which is used to disconnect the first functional layer located inside the second groove from the first functional layer located outside the second groove.

15. The display panel according to claim 14, characterized in that, The dam is used to block the organic layer in the encapsulation layer.

16. The display panel according to claim 14, characterized in that, The dam is located in the borehole area.

17. The display panel according to claim 14, characterized in that, The dam is a ring dam, which surrounds the first groove and the metal structure; The second groove is an annular groove, which surrounds the first groove and the metal structure.

18. The display panel according to claim 14, characterized in that: The depth of the second groove is greater than the thickness of the first functional layer.

19. The display panel according to claim 14, characterized in that: The depth of the second groove is greater than or equal to 0.1 micrometers, and the width of the second groove is greater than or equal to 5 micrometers and less than or equal to 7 micrometers.

20. The display panel according to claim 18, characterized in that: The second groove is further provided with a second organic layer, which is disposed on the side of the first functional layer in the second groove away from the bottom of the second groove, and the second organic layer is used to planarize the second groove.

21. The display panel according to claim 20, characterized in that: The distance between the surface of the second organic layer away from the bottom of the second groove and the second surface of the first functional layer away from the surface of the dam away from the substrate is less than or equal to 0.1 micrometers; wherein the second surface of the first functional layer is the surface of the first functional layer outside the second groove away from the dam.

22. The display panel according to claim 21, characterized in that: The surface of the second organic layer away from the bottom of the second groove is flush with the second surface of the first functional layer of the dam away from the substrate.

23. The display panel according to any one of claims 1-22, characterized in that: The first functional layer includes a light-emitting functional layer and a first electrode layer stacked sequentially, wherein the first electrode layer is disposed on the side of the light-emitting functional layer away from the substrate; The hole is used to house an optical sensor.

24. The display panel according to claim 23, characterized in that: The optical sensor includes a camera.

25. The display panel according to claim 23, characterized in that: The light-emitting functional layer includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

26. A display panel, characterized in that, include: A substrate, a first functional layer disposed on one side of the substrate, and an encapsulation layer disposed on the side of the first functional layer away from the substrate; The substrate includes a display area and a non-display area; the non-display area includes a hole area, the substrate has a hole in the hole area, and the display area surrounds at least a portion of the hole area; At least one metal structure is provided on the surface of the substrate, the metal structure is disposed between the hole and the display area, and a dam is also provided on the surface of the substrate, the dam being located between the metal structure and the display area; At least one second groove is provided on the surface of the dam away from the substrate; The first functional layer extends from the display area to the hole area, covers the surface of the dam away from the substrate, and fills the second groove; the second groove is used to disconnect the first functional layer located in the second groove from the first functional layer located outside the second groove.

27. A display device, characterized in that, Includes the display panel as described in any one of claims 1-26.

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