Display panel, preparation method thereof and display device

Abstract

Embodiments of the present application provide a display panel, a preparation method thereof and a display device. The display panel has a display area, an opening area and a transition area; the display area surrounds the opening area, and the transition area is located between the opening area and the display area; the opening area is provided with an opening; the display panel comprises a substrate layer and, in sequence away from the substrate layer, a second inorganic layer, a light-emitting layer, a first inorganic layer and a first reinforcing layer; the light-emitting layer is in contact with the first inorganic layer and the second inorganic layer; the first reinforcing layer has a plurality of first isolation structures; and the plurality of first isolation structures are arranged at a position of the transition area close to the opening area. When the edge of the opening is subjected to a lateral impact force, the film layers with smaller binding force in the display panel will preferentially separate, thereby effectively avoiding the occurrence of GDS and GDSH defects caused by peeling at the light-emitting layer; the first isolation structures are broken to release stress, preventing cracks from extending to the display area, and reducing the occurrence of failure of the display panel due to impact on the edge of the opening.

Description

Technical Field

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

[0002] During the assembly of display devices such as mobile phones, openings are required in the display area of ​​OLED display panels to house cameras and sensors (HIAA). Functional buttons, such as those for control islands, can also be placed within the HIAA area. These processes and operations can easily lead to HIAA edge failure due to impact forces. For example, when the HIAA edge is subjected to a lateral impact, the light-emitting layer and adjacent film layers may peel, resulting in GDSH (growth-depleted black spots) and GDS (growth-depleted black spots) defects in the display panel. Therefore, reducing the occurrence of display panel failure due to impacts at the opening edges is an urgent problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a display panel, its manufacturing method, and a display device, so as to reduce the occurrence of display panel failure due to impact on the opening edges. The specific technical solution is as follows:

[0004] An embodiment of the first aspect of this application provides a display panel having a display area, an opening area, and a transition area;

[0005] The display area surrounds the opening area, and the transition area is located between the opening area and the display area;

[0006] The opening area is provided with an opening;

[0007] The display panel includes a substrate layer and a second inorganic layer, a light-emitting layer, a first inorganic layer, and a first enhancement layer sequentially disposed along a direction away from the substrate layer;

[0008] The light-emitting layer is disposed in contact with the first inorganic layer and the second inorganic layer;

[0009] The first reinforcement layer has a plurality of first isolation structures, which are arranged in the transition region near the opening region.

[0010] In some embodiments of this application, the plurality of first isolation structures are arranged in a single layer or multiple layers surrounding the opening area;

[0011] When the multiple first isolation structures are arranged in layers surrounding the opening area, the first isolation structures in different layers are arranged in an alternating manner.

[0012] In some embodiments of this application, the display panel further includes a touch layer;

[0013] The touch layer is disposed between the first inorganic layer and the first reinforcement layer, and the touch layer and the first reinforcement layer are in contact.

[0014] In some embodiments of this application, the plurality of first isolation structures on the first reinforcement layer include: a plurality of first through holes staggered at positions in the transition region near the opening region; or,

[0015] The plurality of first isolation structures on the first reinforcement layer include: a plurality of first protrusions staggered at positions in the transition region near the opening region.

[0016] In some embodiments of this application, the touch layer is provided with a second protrusion corresponding to the first protrusion, and the first protrusion is formed above the second protrusion.

[0017] In some embodiments of this application, the substrate layer includes: a first substrate, a buffer layer, and a second substrate disposed sequentially;

[0018] The side of the second substrate away from the buffer layer is in contact with the second inorganic layer;

[0019] The buffer layer has multiple second isolation structures forming a second reinforcement layer, and the multiple second isolation structures are arranged in the transition region near the opening region.

[0020] In some embodiments of this application, the plurality of second isolation structures on the buffer layer include: a plurality of second through holes staggered in the transition region near the opening region.

[0021] In some embodiments of this application, the plurality of second isolation structures are arranged in a single layer or multiple layers surrounding the opening area;

[0022] When the multiple second isolation structures are arranged in layers surrounding the opening area, the second isolation structures in different layers are arranged in an alternating manner.

[0023] In some embodiments of this application, the distance between the first isolation structure on the first reinforcement layer and the opening is smaller than the distance between the second isolation structure on the second reinforcement layer and the opening;

[0024] And / or, the display panel further includes an isolation pillar located in the transition area and surrounding the opening area, the light-emitting layer being disconnected at the isolation pillar, the isolation pillar being located on the side of the second isolation structure away from the opening area; the distance between the isolation pillar and the second isolation structure is greater than the distance between the opening and the second isolation structure.

[0025] In some embodiments of this application, the display panel further includes an organic layer, a polarizer, and a cover plate;

[0026] The organic layer is disposed on the side of the first reinforcement layer away from the first substrate; the organic layer and the first reinforcement layer are in contact.

[0027] The polarizer is disposed on the side of the organic layer away from the first substrate;

[0028] The cover plate is disposed on the side of the polarizer away from the first substrate.

[0029] The second aspect of this application provides a method for manufacturing a display panel, used to manufacture the display panel of any embodiment of the first aspect, comprising:

[0030] Preparation of substrate layer;

[0031] A second inorganic layer is prepared on the substrate;

[0032] A light-emitting layer is prepared on the second inorganic layer;

[0033] A first inorganic layer is prepared on the light-emitting layer;

[0034] Prepare the first reinforcement layer;

[0035] The display panel has a display area, an opening area, and a transition area; the display area surrounds the opening area, and the transition area is located between the opening area and the display area and surrounds the opening area; a first reinforcement layer has a plurality of first isolation structures, and the plurality of first isolation structures are arranged in the transition area near the opening area.

[0036] In some embodiments of this application, the fabrication of the first reinforcing layer includes:

[0037] The first reinforcing film was prepared using chemical vapor deposition.

[0038] Multiple first vias are fabricated using development, exposure, and etching processes. These first vias are staggered and positioned near the opening area in the transition region to form a first reinforcement layer.

[0039] And / or, the display panel also includes a touch layer;

[0040] The process before preparing the first reinforcing layer also includes:

[0041] A touch layer is prepared on the first inorganic layer;

[0042] Multiple second protrusions are formed on the touch layer using a patterning process, and the second protrusions are staggered and positioned near the opening area in the transition area.

[0043] A first reinforcement layer is prepared on the touch layer using a coating process, so that a plurality of first protrusions corresponding to the second protrusions are formed on the first reinforcement layer, and the first protrusions are formed above the second protrusions.

[0044] In some embodiments of this application, the preparation of the substrate layer includes:

[0045] Prepare the first substrate;

[0046] A buffer layer is fabricated on the first substrate;

[0047] A second substrate is fabricated on the buffer layer;

[0048] The buffer layer has multiple second isolation structures forming a second reinforcement layer, and the multiple second isolation structures are arranged in the transition region near the opening region;

[0049] The distance between the first isolation structure on the first reinforcing layer and the opening is smaller than the distance between the second isolation structure on the second reinforcing layer and the opening.

[0050] And / or, the display panel also includes isolation pillars,

[0051] Before fabricating the second inorganic layer on the substrate, the following steps are also included:

[0052] Separation pillars are fabricated on the substrate layer;

[0053] The isolation pillar is located in the transition zone and surrounds the opening area. The light-emitting layer is broken at the isolation pillar. The isolation pillar is located on the side of the second isolation structure far away from the opening area. The distance between the isolation pillar and the second isolation structure is greater than the distance between the opening and the second isolation structure.

[0054] An embodiment of the third aspect of this application provides a display device including a display panel according to any embodiment of the first aspect.

[0055] Beneficial effects of the embodiments of the present invention:

[0056] The display panel of this application has a display area, an opening area, and a transition area; the display area surrounds the opening area, and the transition area is located between the opening area and the display area; the opening area has an opening. The display panel includes a bottom layer and a second inorganic layer, a light-emitting layer, a first inorganic layer, and a first reinforcement layer sequentially disposed in a direction away from the substrate layer; the light-emitting layer is in contact with the first inorganic layer and the second inorganic layer; the first reinforcement layer has a plurality of first isolation structures, and the plurality of first isolation structures are arranged in the transition area near the opening area, without affecting the normal light emission of the display area; the plurality of first isolation structures make the bonding force between the first reinforcement layer and the adjacent film layer less than the bonding force between the light-emitting layer and the first inorganic layer and the second inorganic layer. When the opening edge is subjected to lateral impact, the layers with weaker bonding in the display panel will preferentially separate. Specifically, the first reinforcing layer and its adjacent layers will separate first, while the light-emitting layer will not separate from the first and second inorganic layers (peeling). This effectively avoids GDS and GDSH defects caused by peeling at the light-emitting layer. When the opening edge is subjected to impact, the first isolation structure will break and release stress, preventing cracks from extending to the display area. This effectively reduces the risk of X / Y-line (vertical / horizontal lines) and GDSH defects caused by cracks extending to the display area, thus reducing the occurrence of display panel failure due to impact on the opening edge. Furthermore, the addition of a new layer (the first reinforcing layer) improves the rigidity of the display panel.

[0057] The display panel prepared according to the method provided in this application can effectively avoid GDS and GDSH defects caused by peeling at the light-emitting layer, effectively reduce the risk of cracks extending to the display area and causing X / Y-line (vertical / horizontal lines) and GDSH defects in the display panel, reduce the occurrence of display panel failure due to impact on the opening edge, and thus improve the quality of the display device.

[0058] The display device of this application includes a display panel according to any embodiment of the first aspect. When the edge of the opening is subjected to a lateral impact force, the film layers with weaker bonding in the display panel will preferentially separate, that is, the first reinforcing layer and its adjacent film layers will preferentially separate, while the light-emitting layer will not peel off from the first inorganic layer and the second inorganic layer. This effectively avoids GDS and GDSH defects caused by peeling at the light-emitting layer. When the edge of the opening is subjected to an impact force, the first isolation structure will break and release stress, preventing cracks from extending to the display area. This effectively reduces the risk of X / Y-line (vertical / horizontal lines) and GDSH defects caused by cracks extending to the display area, reducing the occurrence of display panel failure due to impact on the edge of the opening, thereby improving the quality of the display device.

[0059] Of course, implementing any product or method of the present invention does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0061] Figure 1 This is a top view of a display panel in the related technology;

[0062] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure at point AA;

[0063] Figure 3 This is a schematic diagram illustrating the film separation of a display panel subjected to a lateral impact force in related technologies.

[0064] Figure 4 This is a top view of a display panel according to an embodiment of this application;

[0065] Figure 5a for Figure 4 The first type of BB sectional view;

[0066] Figure 5b for Figure 5a A schematic diagram of the three-dimensional structure at point BB;

[0067] Figure 5c for Figure 5a A three-dimensional structural diagram showing that no polarizer and cover plate are installed at the BB position;

[0068] Figure 6 for Figure 5a and Figure 5b A schematic diagram of the connection structure between the first enhancement layer and the touch layer in the image;

[0069] Figure 7a for Figure 4 A schematic diagram of the second type of 3D structure at BB;

[0070] Figure 7b for Figure 7a A three-dimensional structural diagram showing that no polarizer and cover plate are installed at point BB;

[0071] Figure 8 for Figure 7a and Figure 7b A schematic diagram of the connection structure between the first enhancement layer and the touch layer in the image;

[0072] Figure 9 This is a schematic diagram (top view) of the opening edge in an embodiment of this application subjected to a lateral impact force;

[0073] Figure 10 This is a schematic diagram (top view) of the opening edge in an embodiment of this application when subjected to a positive impact force;

[0074] Figure 11 This is a plan view of an example of the first isolation structure in an embodiment of this application;

[0075] Figure 12 for Figure 4 CC section view;

[0076] Figure 13 This is a top view of another display panel according to an embodiment of this application;

[0077] Figure 14 This is a flowchart illustrating the method for manufacturing a display panel according to an embodiment of this application.

[0078] Explanation of reference numerals in the attached figures:

[0079] exist Figures 1 to 3 middle:

[0080] Display panel 1000; First substrate 1; Buffer layer 2; Second substrate 3; Second inorganic layer 4; Light-emitting layer 5; First inorganic layer 6; Touch layer 7; Opening 8; Transition area 9;

[0081] exist Figures 4 to 13 middle:

[0082] Display panel 10; display area 11; opening area 12; transition area 13; opening 111; substrate layer 100; first substrate 110; second reinforcement layer 120; second isolation structure 121; second substrate 130; light-emitting layer 200; first inorganic layer 300; second inorganic layer 400; first reinforcement layer 500; first isolation structure 510; first through hole 511; first protrusion 512; touch layer 600; organic layer 700; isolation pillar 800; cover plate 901; polarizer 902. Detailed Implementation

[0083] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 based on this application are within the scope of protection of the present invention.

[0084] like Figure 1As shown, the display panel 1000 in the related technology includes a display area (AA), and during the manufacturing process, an opening 8 (HIAA) needs to be made in the display area.

[0085] like Figure 2 As shown, the display panel 1000 in the related technology includes: a first substrate 1, a buffer layer 2, a second substrate 3, a second inorganic layer 4, a light-emitting layer 5, a first inorganic layer 6, and a touch layer 7 arranged sequentially.

[0086] During the assembly process, the camera and sensor can be placed inside the opening 8, and function buttons such as the "Dynamic Island" can be set in the area corresponding to the opening 8. Although a transition area 9 with isolation pillars is set between the opening 8 and the display area, these processes and operations can easily cause the edge of the opening 8 to be subjected to impact force and fail.

[0087] For example, such as Figure 3 As shown, when the edge of the opening 8 is subjected to lateral force, it will cause the film layer at the light-emitting layer 5 to separate, that is, the light-emitting layer 5 separates from the first inorganic layer 6 and the light-emitting layer 5 separates from the second inorganic layer 4, which in turn causes the display panel 1000 to produce GDSH (black spots at the edge of the hole) and GDS (growing black spots) defects.

[0088] It is understandable that the positive impact force on the edge of the opening 8 is perpendicular to the display surface of the display panel 1000; the lateral impact force is parallel to the display surface of the display panel 1000.

[0089] An embodiment of the first aspect of this application provides a display panel 10, such as... Figure 4 As shown, the display panel 10 has a display area 11, an opening area 12, and a transition area 13; the display area 11 surrounds the opening area 12, and the transition area 13 is located between the opening area 12 and the display area 11; the opening area 12 has an opening 111.

[0090] like Figures 5a to 5c As shown, the display panel 10 includes a substrate layer 100 and a second inorganic layer 400, a light-emitting layer 200 (EL layer), a first inorganic layer 300, and a first enhancement layer 500 arranged sequentially in a direction away from the substrate layer 100; the light-emitting layer 200 is in contact with the first inorganic layer 300 and the second inorganic layer 400; the first enhancement layer 500 has a plurality of first isolation structures 510, and the plurality of first isolation structures 510 are arranged in the transition region 13 near the opening region 12.

[0091] The display panel 10 of this application has a display area 11, an opening area 12, and a transition area 13; the display area 11 surrounds the opening area 12, and the transition area 13 is located between the opening area 12 and the display area 11; the opening area 12 has an opening 111. The display panel 10 includes a substrate layer 100 and a second inorganic layer 400, a light-emitting layer 200, a first inorganic layer 300, and a first reinforcement layer 500 arranged sequentially in a direction away from the substrate layer 100; the light-emitting layer 200 is in contact with the first inorganic layer 300 and the second inorganic layer 400; the first reinforcement layer 500 has a plurality of first isolation structures 510, and the plurality of first isolation structures 510 are arranged in the transition area 13 near the opening area 12, without affecting the normal light emission of the display area 11; the plurality of first isolation structures 510 make the bonding force between the first reinforcement layer 500 and the adjacent film layer less than the bonding force between the light-emitting layer 200 and the first inorganic layer 300 and the second inorganic layer 400. When the edge of the opening 111 is subjected to a lateral impact, the film layers with weaker bonding in the display panel 10 will preferentially separate. That is, the first reinforcing layer 500 and its adjacent film layers will preferentially separate, while the light-emitting layer 200 will not peel with the first inorganic layer 300 and the second inorganic layer 400. This effectively avoids GDS and GDSH defects caused by peeling at the light-emitting layer 200. When the edge of the opening 111 is subjected to an impact, the first isolation structure 510 will break and release stress, preventing cracks from extending to the display area 11. This effectively reduces the risk of X / Y-line defects and GDSH defects in the display panel 10 caused by cracks extending to the display area 11, and reduces the occurrence of display panel 10 failure due to impact on the edge of the opening 111. In addition, the addition of a film layer (first reinforcing layer 500) improves the rigidity of the display panel 10.

[0092] In some embodiments of this application, such as Figures 5a to 6 As shown, the display panel 10 also includes a touch layer 600 (TOC layer); the touch layer 600 is disposed between the first inorganic layer 300 and the first enhancement layer 500, and the touch layer 600 and the first enhancement layer 500 are in contact; the plurality of first isolation structures 510 on the first enhancement layer 500 can be a plurality of first through holes 511 staggeredly disposed in the transition area 13 near the opening area 12.

[0093] During the installation of a camera or sensor into opening 111, the edge of opening 111 (HIAA) may be subjected to significant lateral and frontal impacts. For example... Figure 9 As shown, when the edge of the opening 111 (HIAA) is subjected to a large lateral impact, the area of ​​the first reinforcement layer 500 where the first through hole 511 is arranged will crack, releasing the impact force, thereby preventing the impact force from entering the display area 11 and causing the display panel 10 to have a GDSH defect.

[0094] like Figure 10 As shown, when the edge of the opening 111 (HIAA) is subjected to a large positive impact, a crack will be generated in the area of ​​the first reinforcement layer 500 where the first through hole 511 is arranged. Since the first through hole 511 is a hollow area, the crack will be interrupted by the first through hole 511 when it extends to the edge of the first through hole 511 and cannot continue to extend. The expansion of the crack is blocked and cannot continue to extend in the direction toward the display area 11. This effectively reduces the risk of the crack extending to the display area 11 and causing X / Y-line (vertical / horizontal lines) and GDSH defects in the display panel 10.

[0095] In some embodiments of this application, such as Figure 6 As shown, the first through hole 511 can be a circular through hole. The edges of a circular through hole are smooth and do not have sharp corners, which is not conducive to the propagation of cracks.

[0096] In other embodiments of this application, the first through hole 511 may also be a square hole, an irregular hole, or other shapes of hole, and this application does not limit it in this way.

[0097] In some embodiments of this application, such as Figures 7a to 8 As shown, the display panel 10 also includes a touch layer 600; the touch layer 600 is disposed between the first inorganic layer 300 and the first enhancement layer 500, and the touch layer 600 and the first enhancement layer 500 are in contact; the plurality of first isolation structures 510 on the first enhancement layer 500 can be a plurality of first protrusions 512 that are staggered in the transition area 13 near the opening area 12.

[0098] like Figure 8 As shown, the touch layer 600 has a second protrusion (not shown) corresponding to the first protrusion 512, with the first protrusion 512 forming above the second protrusion. Specifically, the first protrusion 512 can be a hollow structure with an internal accommodating space; the second protrusion on the touch layer 600 is correspondingly arranged to the first protrusion 512, with the first protrusion 512 covering the second protrusion, and the second protrusion being disposed within the accommodating space of the first protrusion 512 and filling the accommodating space.

[0099] refer to Figure 9 As shown, when the edge of the opening 111 (HIAA) is subjected to a lateral impact, the first protrusion 512 and the second protrusion will collide, causing the first protrusion 512 to break and release the impact force, thereby preventing the impact force from entering the display area 11 and causing the display panel 10 to have a GDSH defect.

[0100] Because the first protrusion 512 has a hollow structure with internal space, and the second protrusion fills that space, the first and second protrusions together form a solid protrusion. Compared to other parts of the first reinforcing layer 500, this solid protrusion is thicker, can withstand greater impact forces, and is less prone to damage. (Reference) Figure 10 As shown, when the edge of the opening 111 (HIAA) is subjected to a forward impact, the solid protrusion preferentially bears the impact force, thereby improving the impact resistance of the edge of the opening 111.

[0101] In some embodiments of this application, such as Figure 8 As shown, the first protrusion 512 can be a hemispherical protrusion. The hemispherical protrusion distributes the force more evenly and can better withstand positive impact forces.

[0102] In other embodiments of this application, the first protrusion 512 may also be a protrusion of other shapes such as cylindrical or frustum-shaped, and this application does not limit it in this way.

[0103] In some embodiments of this application, such as Figure 11 As shown, multiple first isolation structures 510 are arranged in a single layer or multiple layers around the opening area 12; when multiple first isolation structures 510 are arranged in multiple layers around the opening area 12, the first isolation structures 510 of different layers are arranged in an alternating manner.

[0104] By setting the first isolation structure 510 in this way, when the first isolation structure 510 is the first through hole 511, it can block the extension of cracks in various directions generated when the edge of the opening 111 is impacted; when the first isolation structure 510 is the first protrusion 512, it can uniformly improve the ability of the edge of the opening 111 to resist positive impact force, which is conducive to reducing the occurrence of defects in the display panel 10.

[0105] Because the first reinforcing layer 500 is provided with a first isolation structure 510, the impact resistance of the edge of the opening 111 is significantly improved.

[0106] In some embodiments of this application, such as Figures 5a to 7b As shown, the substrate layer 100 includes: a first substrate 110, a buffer layer and a second substrate 130 disposed sequentially; the side of the second substrate 130 away from the buffer layer is in contact with the second inorganic layer 400; the buffer layer has a plurality of second isolation structures 121 formed as a second reinforcement layer 120, and the plurality of second isolation structures 121 are arranged in the transition region 13 near the opening region 12.

[0107] In some embodiments of this application, such as Figure 12As shown, the distance L1 between the first isolation structure 510 on the first reinforcing layer 500 and the opening 111 is smaller than the distance L2 between the second isolation structure 121 on the second reinforcing layer 120 and the opening 111. This design allows the first isolation structure 510 on the first reinforcing layer 500, which is closer to the opening 111, to quickly respond and block the impact force received by the edge of the opening 111.

[0108] Multiple second isolation structures 121 ensure that the bonding force between the second reinforcing layer 120 and its adjacent film layers is less than the bonding force between the light-emitting layer 200 and the first inorganic layer 300 and the second inorganic layer 400. When the edge of the opening 111 is subjected to a lateral impact force, the film layers with weaker bonding forces in the display panel 10 will preferentially separate, that is, the second reinforcing layer 120 and its adjacent film layers will preferentially separate, while the light-emitting layer 200 will not separate from the first inorganic layer 300 and the second inorganic layer 400, further reducing the occurrence of display panel 10 failure due to impact on the edge of the opening 111.

[0109] In some embodiments of this application, such as Figure 6 As shown, the plurality of second isolation structures 121 on the second reinforcing layer 120 can be arranged in the same manner as the plurality of first through holes 511 on the first reinforcing layer 500. The plurality of second isolation structures 121 on the buffer layer can be a plurality of second through holes staggered in the transition region 13 near the opening region 12. The second isolation structures 121 on the second reinforcing layer 120 are second through holes.

[0110] refer to Figure 9 As shown, when the edge of the opening 111 (HIAA) is subjected to a large lateral impact, the area of ​​the second reinforcing layer 120 where the second through-hole is arranged will fracture, releasing the impact force. Figure 11 As shown, an isolation post 800 is also provided in the transition area 13 of the display panel 10. The isolation post 800 is arranged around the opening area 12 to break the light-emitting layer 200. The isolation post 800 is located on the side of the second through hole far away from the opening area 12. The second through hole breaks, releasing the impact force and preventing the impact force from entering the transition area 13 and closer to the display area 11, thereby preventing the isolation post 800 from peeling due to the impact force.

[0111] In some embodiments of this application, such as Figure 12As shown, the distance L3 between the isolation post 800 and the second isolation structure 121 (or the second through hole) is greater than the distance L2 between the opening 111 and the second isolation structure 121. This ensures that the distance between the isolation post 800 and the second isolation structure 121 is maintained. Even if the second through hole breaks, the impact force is released within a certain distance, preventing the impact force from entering the transition area 13 and getting closer to the display area 11. This also prevents the isolation post 800 from peeling due to the impact force.

[0112] refer to Figure 10 As shown, when the edge of the opening 111 (HIAA) is subjected to a large positive impact, a crack will be generated in the area of ​​the second reinforcing layer 120 where the second through hole is arranged. Since the second through hole is a hollow area, the crack will be interrupted by the second through hole when it extends to the edge of the second through hole, and cannot continue to extend. The expansion of the crack is blocked and cannot continue to extend in the direction toward the display area 11. This effectively reduces the risk of the crack extending to the display area 11 and causing X / Y-line (vertical / horizontal lines) and GDSH defects in the display panel 10.

[0113] In some embodiments of this application, multiple second isolation structures 121 are disposed in a single layer or multiple layers around the opening area 12; when multiple second isolation structures 121 are disposed in multiple layers around the opening area 12, the different layers of second isolation structures 121 are arranged in an alternating manner. Figure 11 As shown, the second isolation structure 121 and the first through hole 511 can be configured in the same way. By configuring the second isolation structure 121 in this way, the extension of cracks in various directions generated when the edge of the opening 111 is subjected to impact can be prevented.

[0114] In some embodiments of this application, multiple second isolation structures 121 are arranged in a single layer with multiple rings surrounding the opening area 12; when multiple second isolation structures 121 are arranged in multiple layers surrounding the opening area 12, the different rings of the second isolation structures 121 are arranged in an alternating manner. For example, the arrangement of the second isolation structures 121 and the first isolation structure 510 is the same, such as... Figure 11 As shown, the spacing L4 between the second isolation structures 121 near the opening area 12 is smaller than the spacing L5 between the second isolation structures 121 far from the opening area 12. By setting the second isolation structures 121 in this way, the impact on the edge of the opening 111 can be quickly blocked, and the extension of cracks in various directions generated when the edge of the opening 111 is impacted can be prevented.

[0115] In some embodiments of this application, such as Figure 5b and Figure 7aAs shown, the display panel 10 also includes an organic layer 700, a polarizer 902 (POL), and a cover plate 901; the organic layer 700 is disposed on the side of the first reinforcement layer 500 away from the first substrate 110; the organic layer 700 and the first reinforcement layer 500 are in contact; the polarizer 902 is disposed on the side of the organic layer 700 away from the first substrate 110; and the cover plate 901 is disposed on the side of the polarizer 902 away from the first substrate 110.

[0116] Specifically, the first reinforcing layer 500, the second reinforcing layer 120, the first inorganic layer 300 and the second inorganic layer 400 can be CVD (Chemical Vapor Deposition) films; the organic layer 700 can be IJP (Ink Jet Printing) films; the first substrate 110 and the second substrate 130 can be PI (Polyimide) layers; and the cover plate 901 can be CG (Cover Glass).

[0117] In practical applications, the display panel 10 can have multiple openings 12 to accommodate more cameras or sensor devices. For example... Figure 13 The image shown is a top view of another display panel 10 according to an embodiment of this application. The display panel 10 has two opening areas 12, and each opening area 12 has an opening 111.

[0118] like Figure 14 As shown, an embodiment of the second aspect of this application provides a method for manufacturing a display panel 10, for manufacturing the display panel 10 of any embodiment of the first aspect, comprising:

[0119] S1. Prepare substrate layer 100;

[0120] S2. Prepare a second inorganic layer 400 on the substrate layer 100;

[0121] S3. Prepare a light-emitting layer 200 on the second inorganic layer 400;

[0122] S4. Prepare the first inorganic layer 300 on the light-emitting layer 200;

[0123] S5. Prepare the first reinforcement layer 500;

[0124] The display panel 10 has a display area 11, an opening area 12, and a transition area 13; the display area 11 surrounds the opening area 12, and the transition area 13 is located between the opening area 12 and the display area 11; the opening area 12 has an opening 111; the first reinforcement layer 500 has a plurality of first isolation structures 510, and the plurality of first isolation structures 510 are arranged in the transition area 13 near the opening area 12.

[0125] The display panel 10 prepared according to the preparation method of the display panel 10 provided in this application can effectively avoid GDS and GDSH defects caused by peeling at the light-emitting layer 200, effectively reduce the risk of X / Y-line (longitudinal / transverse lines) and GDSH defects in the display panel 10 caused by cracks extending to the display area 11, reduce the occurrence of display panel 10 failure due to impact on the edge of the opening 111, and thus improve the quality of the display device.

[0126] In some embodiments of this application, the preparation of the first reinforcement layer 500 includes: preparing the first reinforcement film layer by chemical vapor deposition (CVD); and preparing a plurality of first vias 511 by developing, exposing and etching processes, wherein the plurality of first vias 511 are staggered and disposed in the transition region 13 near the opening region 12 to form the first reinforcement layer 500.

[0127] In some embodiments of this application, the display panel 10 further includes a touch layer 600;

[0128] Before fabricating the first reinforcing layer 500, the following steps are also included:

[0129] A touch layer 600 is prepared on the first inorganic layer 300; a plurality of second protrusions are formed on the touch layer 600 using a patterning process, and the second protrusions are staggered and arranged in the transition region 13 near the opening region 12; a first reinforcement layer 500 is prepared on the touch layer 600 using a coating process, so that a plurality of first protrusions 512 corresponding to the second protrusions are formed on the first reinforcement layer 500, and the first protrusions 512 are formed above the second protrusions.

[0130] In some embodiments of this application, the fabrication of the substrate layer 100 includes:

[0131] Fabrication of the first substrate 110;

[0132] A buffer layer is prepared on the first substrate 110;

[0133] A second substrate 130 is fabricated on the buffer layer;

[0134] The buffer layer has multiple second isolation structures 121 forming a second reinforcement layer 120, and the multiple second isolation structures 121 are arranged in the transition region 13 near the opening region 12;

[0135] The distance L1 between the first isolation structure 510 on the first reinforcing layer 500 and the opening 111 is smaller than the distance L2 between the second isolation structure 121 on the second reinforcing layer 120 and the opening 111.

[0136] In some embodiments of this application, the display panel 10 further includes isolation pillars 800.

[0137] Before fabricating the second inorganic layer 400 on the substrate layer 100, the process also includes:

[0138] An isolation pillar 800 is fabricated on the substrate layer 100;

[0139] The isolation pillar 800 is located in the transition area 13 and surrounds the opening area 12. The light-emitting layer 200 is broken at the isolation pillar 800. The isolation pillar 800 is located on the side of the second isolation structure 121 far away from the opening area 12. The distance L3 between the isolation pillar 800 and the second isolation structure 121 is greater than the distance L2 between the opening 111 and the second isolation structure 121.

[0140] An embodiment of the third aspect of this application provides a display device including a display panel 10 of any embodiment of the first aspect.

[0141] The display device of this application includes a display panel 10 according to any embodiment of the first aspect. When the edge of the opening 111 is subjected to a lateral impact force, the film layers with weaker bonding in the display panel 10 will preferentially separate, that is, the first reinforcing layer 500 and its adjacent film layers will preferentially separate, while the light-emitting layer 200 will not peel with the first inorganic layer 300 and the second inorganic layer 400. This effectively avoids GDS and GDSH defects caused by peeling at the light-emitting layer 200. When the edge of the opening 111 is subjected to an impact force, the first isolation structure 510 will break to release stress and prevent cracks from extending to the display area 11. This effectively reduces the risk of X / Y-line defects and GDSH defects in the display panel 10 caused by cracks extending to the display area 11. This reduces the occurrence of display panel 10 failure due to impact on the edge of the opening 111, thereby improving the quality of the display device.

[0142] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0143] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0144] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A display panel, characterized in that, The display panel has a display area, an opening area, and a transition area; The display area surrounds the opening area, and the transition area is located between the opening area and the display area; The opening area is provided with an opening; The display panel includes a substrate layer and a second inorganic layer, a light-emitting layer, a first inorganic layer, and a first enhancement layer sequentially disposed along a direction away from the substrate layer; The light-emitting layer is disposed in contact with the first inorganic layer and the second inorganic layer; The first reinforcement layer has a plurality of first isolation structures, which are arranged in the transition region near the opening region; The plurality of first isolation structures make the bonding force between the first reinforcing layer and the adjacent film layer less than the bonding force between the light-emitting layer and the first inorganic layer and the second inorganic layer; The substrate layer includes: a first substrate, a buffer layer, and a second substrate disposed sequentially; The side of the second substrate away from the buffer layer is in contact with the second inorganic layer; The buffer layer has a plurality of second isolation structures forming a second reinforcement layer, and the plurality of second isolation structures are arranged in the transition region near the opening region; The distance between the first isolation structure on the first reinforcement layer and the opening is smaller than the distance between the second isolation structure on the second reinforcement layer and the opening. The display panel further includes an isolation pillar located in the transition area and surrounding the opening area. The light-emitting layer is disconnected at the isolation pillar, which is located on the side of the second isolation structure away from the opening area. The distance between the isolation pillar and the second isolation structure is greater than the distance between the opening and the second isolation structure.

2. The display panel according to claim 1, characterized in that, The plurality of first isolation structures are arranged to surround the opening area in a single layer or in multiple layers. When the multiple first isolation structures are arranged in layers surrounding the opening area, the first isolation structures in different layers are arranged in an alternating manner.

3. The display panel according to claim 1, characterized in that, The display panel also includes a touch layer; The touch layer is disposed between the first inorganic layer and the first reinforcement layer, and the touch layer and the first reinforcement layer are in contact.

4. The display panel according to claim 3, characterized in that, The plurality of first isolation structures on the first reinforcement layer include: a plurality of first through holes staggered at positions in the transition region near the opening region; or, The plurality of first isolation structures on the first reinforcement layer include: a plurality of first protrusions staggered at positions in the transition region near the opening region.

5. The display panel according to claim 4, characterized in that, The touch layer has a second protrusion corresponding to the first protrusion, and the first protrusion is formed above the second protrusion.

6. The display panel according to claim 1, characterized in that, The buffer layer includes multiple second isolation structures, which are staggered in the transition area near the opening area.

7. The display panel according to claim 1, characterized in that, The plurality of second isolation structures are arranged in a single layer or multiple layers surrounding the opening area; When the multiple second isolation structures are arranged in layers surrounding the opening area, the second isolation structures in different layers are arranged in an alternating manner.

8. The display panel according to claim 6, characterized in that, The display panel also includes an organic layer, a polarizer, and a cover plate; The organic layer is disposed on the side of the first reinforcement layer away from the first substrate; the organic layer and the first reinforcement layer are in contact. The polarizer is disposed on the side of the organic layer away from the first substrate; The cover plate is disposed on the side of the polarizer away from the first substrate.

9. A method for manufacturing a display panel, characterized in that, To prepare the display panel according to any one of claims 1-8, comprising: Preparation of substrate layer; A second inorganic layer is prepared on the substrate; A light-emitting layer is prepared on the second inorganic layer; A first inorganic layer is prepared on the light-emitting layer; Prepare the first reinforcement layer; The display panel has a display area, an opening area, and a transition area; the display area surrounds the opening area, and the transition area is located between the opening area and the display area; the opening area has an opening; the first reinforcement layer has a plurality of first isolation structures, and the plurality of first isolation structures are arranged in the transition area near the opening area. The preparation of the substrate layer includes: Prepare the first substrate; A buffer layer is fabricated on the first substrate; A second substrate is fabricated on the buffer layer; The buffer layer has multiple second isolation structures forming a second reinforcement layer, and the multiple second isolation structures are arranged in the transition region near the opening region; The distance between the first isolation structure on the first reinforcing layer and the opening is smaller than the distance between the second isolation structure on the second reinforcing layer and the opening. The display panel also includes isolation columns. Before fabricating the second inorganic layer on the substrate, the following steps are also included: Separation pillars are fabricated on the substrate layer; The isolation pillar is located in the transition zone and surrounds the opening area. The light-emitting layer is broken at the isolation pillar. The isolation pillar is located on the side of the second isolation structure far away from the opening area. The distance between the isolation pillar and the second isolation structure is greater than the distance between the opening and the second isolation structure.

10. The method for manufacturing a display panel according to claim 9, characterized in that, The preparation of the first reinforcing layer includes: The first reinforcing film was prepared using chemical vapor deposition. Multiple first vias are fabricated using development, exposure and etching processes. These multiple first vias are staggered and positioned near the opening area in the transition region to form a first reinforcement layer. And / or, the display panel also includes a touch layer; The process before preparing the first reinforcing layer also includes: A touch layer is prepared on the first inorganic layer; Multiple second protrusions are formed on the touch layer using a patterning process, and the second protrusions are staggered and positioned near the opening area in the transition area. A first reinforcement layer is prepared on the touch layer using a coating process, so that a plurality of first protrusions corresponding to the second protrusions are formed on the first reinforcement layer, and the first protrusions are formed above the second protrusions.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-8.

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