Display panel and display device

Abstract

The present invention discloses a display panel and a display device, wherein the display panel comprises: a substrate; an array driving display layer, a packaging layer, an isolation layer and a touch electrode layer on the substrate; the packaging layer is located in the display area and at least part of the frame area; the touch electrode layer comprises a touch electrode and a touch lead; the touch electrode is arranged in the display area; the touch lead is electrically connected to the touch electrode and extends to the first frame area between the display area and the binding area; a retaining wall structure is arranged in the first frame area, and a first organic film layer is arranged in the first frame area along the direction of the retaining wall structure away from the display area; the first organic film layer and the isolation layer and the touch lead overlap; the isolation layer is formed with a groove structure so that the touch lead contacts the first organic film layer; and / or the first organic film layer is formed with a groove structure so that the isolation layer contacts the film layer structure below the first organic film layer. The technical solution provided by the present invention can solve the problem of corrosion of the metal film layer in a high temperature and high humidity environment.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic light-emitting diode (OLED) display panel refers to a display panel in which the light-emitting material emits light through carrier injection and recombination under the drive of an electric field. Organic light-emitting display panels are thinner and lighter, and have better viewing angles and contrast, etc., so they have attracted widespread attention.

[0003] Especially for flexible display panels, at the lower step of the flexible display panel, in a high temperature and high humidity environment, the polarizer is prone to shrinkage, resulting in gaps at the edge of the flexible display panel and allowing water and oxygen to invade. In addition, the organic film layer and the inorganic film layer in the flexible display panel have stress differences after heating, causing peeling, which causes the metal layer in the flexible display panel to be corroded, and further causes abnormalities in the display panel. Summary of the invention

[0004] Embodiments of the present invention provide a display panel and a display device to solve the problem of corrosion of a metal film layer in a high temperature and high humidity environment.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, including a display area and a frame area surrounding the display area; the display panel includes: a substrate;

[0006] An array driving display layer is arranged on one side of the substrate;

[0007] An encapsulation layer is disposed on a side of the array drive display layer away from the substrate; the encapsulation layer is located in the display area and at least a portion of the frame area;

[0008] An isolation layer, disposed on a side of the encapsulation layer away from the substrate;

[0009] A touch electrode layer is arranged on a side of the isolation layer away from the substrate; the touch electrode layer comprises touch electrodes and touch leads; the touch electrodes are arranged in the display area; the touch leads are electrically connected to the touch electrodes and extend to a first frame area between the display area and the binding area;

[0010] The first frame region is provided with a retaining wall structure, and along a direction in which the retaining wall structure is away from the display area, at least a portion of the first frame region is provided with a first organic film layer;

[0011] Along a direction perpendicular to the display panel, the first organic film layer, the isolation layer, and the touch lead overlap;

[0012] In the first frame area, the isolation layer forms a groove structure so that the touch lead contacts the first organic film layer; and / or the first organic film layer forms a groove structure so that the isolation layer contacts the film layer structure below the first organic film layer.

[0013] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel provided by any embodiment of the present invention.

[0014] In the present invention, the display panel includes a substrate and an array drive display layer, a packaging layer, an isolation layer and a touch electrode layer sequentially arranged on the substrate. The packaging layer is located in the display area and part of the frame area; the touch electrode in the touch electrode layer is arranged in the display area, and the touch lead is electrically connected to the touch electrode and extends to the first frame area; the first frame area is provided with a retaining wall structure, and the first organic film layer is provided at a part of the side of the retaining wall structure away from the display area; in the direction perpendicular to the substrate, the first organic film layer, the isolation layer and the touch lead overlap, then in the first frame area, the isolation layer can form a groove structure so that the touch lead contacts the first organic film layer, or the first organic film layer forms a groove structure so that the isolation layer contacts the film layer structure below the first organic film layer. Because the isolation layer is generally an inorganic material, and the first organic film layer is an organic material, the organic material and the inorganic material can generate different stresses when heated, resulting in peeling between the isolation layer and the first organic film layer. In this embodiment, the touch lead is in contact with the first organic film layer, and / or the isolation layer is in contact with the film layer below the first organic film layer, so as to enhance the adhesion between the film layers, effectively prevent peeling of the isolation layer and the first organic film layer, reduce the risk of corrosion of the touch lead in a high temperature and high humidity environment, avoid failure of the touch electrode, and further prevent water vapor from penetrating along the edge of the first organic film layer, avoid corrosion of the metal layer in the array drive display layer, and improve the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of a partial enlarged structure of the lower frame area of ​​the display panel;

[0017] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel;

[0018] Figure 4 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0019] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel;

[0020] Figure 6 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0021] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel;

[0022] Figure 8 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0023] Fig. 9 for Figure 8 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel;

[0024] Fig.10 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0025] Fig.11 for Fig.10 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel;

[0026] Fig.12 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0027] Fig.13 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0028] Fig.14 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0029] Fig.15 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0030] Fig.16 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention;

[0031] Fig.17 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] An embodiment of the present invention provides a display panel. Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Figure 2 for Figure 1 A schematic diagram of the partial enlarged structure of the lower frame area of ​​the display panel. Figure 3 for Figure 1 The cross-sectional structure diagram of the lower frame area of ​​the display panel is shown in FIG. 1 , wherein the display panel includes a display area AA and a frame area NA surrounding the display area AA; the display panel includes: a substrate 11;

[0034] An array driving display layer 12 is disposed on one side of the substrate 11;

[0035] The encapsulation layer 13 is disposed on a side of the array driving display layer 12 away from the substrate 11; the encapsulation layer 13 is located in the display area and at least a portion of the frame area NA;

[0036] The isolation layer 14 is disposed on a side of the encapsulation layer 13 away from the substrate 11;

[0037] The touch electrode layer 15 is disposed on a side of the isolation layer 14 away from the substrate 11; the touch electrode layer 15 includes a touch electrode 151 and a touch lead 152; the touch electrode 151 is disposed in the display area AA; the touch lead 152 is electrically connected to the touch electrode 151 and extends to the first frame area NA1 between the display area AA and the binding area B1;

[0038] The first frame area NA1 is provided with a retaining wall structure 21, and along the direction of the retaining wall structure 21 away from the display area AA, at least a portion of the first frame area NA1 is provided with a first organic film layer 121;

[0039] Along the direction perpendicular to the display panel, the first organic film layer 121, the isolation layer 14 and the touch lead 152 overlap;

[0040] In the first frame area NA1, the isolation layer 14 is formed with a groove structure 22 to make the touch lead 152 contact the first organic film layer 121; and / or, the first organic film layer 121 is formed with a groove structure 22 to make the isolation layer 14 contact the film layer structure below the first organic film layer 121.

[0041] It should be noted that Figure 1Only a self-capacitive touch display panel is shown. There is also a mutual capacitance touch display panel in the prior art. The touch display panel in this embodiment adopts the technology of directly placing the touch electrode layer on the encapsulation layer (Touch Panel On TFE, TPOT). Both self-capacitive and mutual capacitance can adopt TPOT touch panel manufacturing technology. This technology can reduce the thickness of the screen, help to realize foldable flexible OLED technology, and can realize a narrow frame design of less than 0.85mm. Compared with traditional touch technology, TPOT technology reduces factors such as outsourcing TP (Touch Panel) and has cost advantages. However, TPOT technology has higher requirements for industrial management and process control, and any water vapor or fluctuation may cause the encapsulation layer to fail. Therefore, it is necessary to strictly control the process conditions during the production process to ensure the stability of the film quality and the improvement of the yield.

[0042] In an embodiment of the present invention, the display panel includes a substrate and an array drive display layer, a packaging layer, an isolation layer and a touch electrode layer sequentially arranged on the substrate. The packaging layer is located in the display area and part of the frame area; the touch electrode in the touch electrode layer is arranged in the display area, and the touch lead is electrically connected to the touch electrode and extends to the first frame area; the first frame area is provided with a retaining wall structure, and the first organic film layer is provided at a part of the side of the retaining wall structure away from the display area; in the direction perpendicular to the substrate, the first organic film layer, the isolation layer and the touch lead overlap, then in the first frame area, the isolation layer can form a groove structure so that the touch lead contacts the first organic film layer, or the first organic film layer forms a groove structure so that the isolation layer contacts the film layer structure below the first organic film layer. Because the isolation layer is generally an inorganic material, and the first organic film layer is an organic material, the organic material and the inorganic material can generate different stresses when heated, resulting in peeling between the isolation layer and the first organic film layer. In this embodiment, the touch lead is in contact with the first organic film layer, and / or the isolation layer is in contact with the film layer below the first organic film layer, so as to enhance the adhesion between the film layers, effectively prevent peeling of the isolation layer and the first organic film layer, reduce the risk of corrosion of the touch lead in a high temperature and high humidity environment, avoid failure of the touch electrode, and further prevent water vapor from penetrating along the edge of the first organic film layer, avoid corrosion of the metal layer in the array drive display layer, and improve the display effect of the display panel.

[0043] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figure 1As shown, the display panel includes a display area AA and a frame area (non-display area) NA at least partially surrounding the display area AA. Exemplarily, if the display area AA is rectangular, the frame area NA is corresponding to the frame areas set on the four sides surrounding the display area AA, and one side of the frame area (which may be referred to as the first frame area NA1 in this embodiment) is away from the display area AA. The side is formed with a binding area B1 for binding a driver chip, and the driver chip can input a signal to the display area AA, thereby driving the display panel. Reference Figure 2 , Figure 2 A partial enlarged schematic diagram of the lower frame area of ​​the display panel (including at least the first frame area NA1 and the binding area B1) is shown. Figure 3 A schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel is shown.

[0045] In a direction perpendicular to the display panel, the display panel includes a substrate 11, and an array drive display layer 12, an encapsulation layer 13, an isolation layer 14 and a touch electrode layer 15 sequentially arranged on the substrate 11. The substrate 11 can be a rigid material such as glass, or a polymer material such as polyimide (PI), polyethylene terephthalate (PET), etc. The array drive display layer 12 includes multiple metal layers, and an insulating layer is arranged between two adjacent metal layers. Specifically, the array drive display layer 12 includes a drive circuit layer and a light-emitting device layer sequentially arranged away from the substrate 11. In the display area AA, the drive circuit layer includes an array-arranged pixel drive circuit, and the light-emitting device layer includes an array-arranged light-emitting device. The pixel drive circuit is electrically connected to the corresponding light-emitting device, and is used to provide a drive current to the corresponding light-emitting device so that the light-emitting device emits light of a corresponding color. An encapsulation layer 13 is arranged on the array drive display layer 12. The encapsulation layer 13 includes organic layers and inorganic layers arranged alternately, and has strong water and oxygen barrier properties, and is used to protect the array drive display layer 12 to prevent water and oxygen from invading and causing the light-emitting device to fail. For example, Figure 3 As shown, the encapsulation layer 13 may include a first inorganic layer 131, a first organic layer 132, and a second inorganic layer 133 which are sequentially arranged away from the substrate 11. The first inorganic layer 131 and the second inorganic layer 133 may be made of materials such as SiNx, SiOx, SiON, or Al2O3, and the first organic layer 132 may be made of materials such as acrylate, hexamethyldisiloxane, polyacrylate, polycarbonate, and polystyrene. In a plane parallel to the substrate 11, the encapsulation layer 13 covers the display area AA and extends to a portion of the frame area NA. For example, Figure 2 As shown, in the lower frame area, the encapsulation layer 13 extends to the first frame area NA1.

[0046] In a display panel with integrated touch function, a touch electrode layer 15 is also required to be disposed on the encapsulation layer 13, and an isolation layer 14 is disposed between the encapsulation layer 13 and the touch electrode layer 15. Figure 3 As shown, the isolation layer 14 is used to separate the display function layer and the touch function layer. Figure 2 In order to illustrate the specific structure of each film layer, the isolation layer 14 is not shown, but the actual structure includes the isolation layer 14. The touch electrode layer 15 includes a touch electrode 151 disposed in the display area AA and a touch lead 152 extending from the display area AA to the frame area NA. Figure 1 As shown, the touch electrode 151 is electrically connected to the corresponding touch lead 152 and extends to the first frame area NA1 and the binding area B1. The driver chip bound to the binding area B1 can input a touch drive signal to the touch electrode 151 through the touch lead 152, and receive a touch detection signal output by the touch electrode 151 through the touch lead 152, thereby realizing the touch function of the display panel. Figure 1 and Figure 3 A retaining wall structure 21 is provided in the first frame area NA1. The retaining wall structure 21 can be formed by stacking organic film layers in the array driving display layer 12, and is used to block the organic encapsulation material of the encapsulation layer 13 at the edge of the encapsulation layer 13 to prevent water and oxygen from invading the light-emitting device layer.

[0047] It should be noted that the array drive display layer 12 includes a first organic film layer 121 (for example, a planarization layer or a pixel definition layer). In the prior art, a clearance area is formed on the side of the retaining wall structure 21 away from the display area AA, and the organic film layer in the array drive display layer 12 is removed in the clearance area, thereby forming a larger step difference with the retaining wall structure 21 to improve the barrier performance of the retaining wall structure 21 to the organic packaging material. Figure 3As shown, in this embodiment, no clearance area is left, and the above-mentioned first organic film layer 121 is arranged close to the retaining wall structure 21, which effectively avoids the exposure of the metal layer under the first organic film layer 121, thereby enhancing the protection of the metal layer under the first organic film layer 121 and avoiding the intrusion of water vapor in the display panel. However, in this embodiment, the first organic film layer 121 is arranged in the first frame area NA1, resulting in an overlap between the first organic film layer 121 and the isolation layer 14 and the touch lead 152. A polarizer 16 is also arranged on the side of the touch electrode layer 15 away from the substrate 11. The polarizer 16 covers the encapsulation layer 13 and extends to the first frame area NA1, and the polarizer 16 is bonded to the sealing glue 31 near the edge of the binding area B1, thereby protecting the array drive display layer 12 and the touch electrode layer 15. However, under high temperature and high pressure environment, the polarizer 16 is prone to shrinkage, resulting in a gap between the polarizer 16 and the sealing glue 31. The organic film layer 32 on the side of the touch electrode layer 15 away from the substrate 11 has poor water resistance, and the isolation layer 14 below the touch lead 152 is an inorganic film layer. The film layer in the array drive display layer 12 that contacts the isolation layer 14 is the first organic film layer 121. There is a difference in the stress generated by the first organic film layer 121 and the isolation layer 14 when heated, resulting in peeling between the isolation layer 14 and the first organic film layer 121. The touch lead 152 peels along with the first organic film layer 121, accelerating the contact between the touch lead 152 and water oxygen, causing the touch function to fail. In addition, when a large amount of water vapor enters the display panel, it can penetrate along the edge of the first organic film layer 121 and enter the metal layer under the first organic film layer 121, causing corrosion of the metal layer in the array drive display layer 12, and then causing abnormal display images. On the basis of the above situation, if Figure 3 As shown, in this embodiment, a groove structure 22 can be formed in the isolation layer 14 to make the touch lead 152 contact with the first organic film layer 121. Because the touch lead 152 is a metal layer and the first organic film layer 121 is an organic film, the two will not cause peeling due to the difference in stress in a high temperature environment. Instead, a strong adhesion force is formed between the touch lead 152 and the first organic film layer 121, and the direct contact area between the inorganic material (isolation layer 14) and the organic material (first organic film layer 121) is reduced, thereby avoiding peeling between the first organic film layer 121 and the isolation layer 14, and avoiding water vapor from entering the panel along the peeling gap, which is equivalent to extending the water and oxygen intrusion path, reducing the corrosion rate of the touch lead 152 and the metal layer in the array drive display layer 12, delaying the failure of the touch function and the display function, improving the performance of the display panel in high temperature environment, and extending the service life of the display panel.

[0048] Figure 4 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention, Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel. Figure 4 and Figure 5 In the first frame area NA1, a groove structure 22 may be formed in the first organic film layer 121 so that the isolation layer 14 contacts the film structure below the first organic film layer 121. Figure 4 The specific structure of the first organic film layer 121 is not shown, so the groove structure 22 on the first organic film layer 121 is marked in the form of a dotted frame. The isolation layer 14 is an inorganic film layer, and the film layer structure below the first organic film layer 121 is an inorganic film layer or a metal layer. The isolation layer 14 is in direct contact with the film layer structure below the first organic film layer 121, and the adhesion is strong, thereby reducing the possibility of peeling between the first organic film layer 121 and the isolation layer 14. It can also extend the water and oxygen intrusion path, reduce the corrosion rate of the metal layer in the touch lead 152 and the array drive display layer 12, delay the failure of the touch function and the display function, and extend the service life of the display panel.

[0049] In addition, in this embodiment, the groove structure 22 can be formed on the isolation layer 14 and the first organic film layer 121 at the same time. Figure 6 and Figure 7 , Figure 6 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention, Figure 7 for Figure 6 The cross-sectional structure diagram of the lower frame area of ​​the display panel in the middle. This embodiment can not only make the touch lead 152 contact with the first organic film layer 121, but also control the isolation layer 14 to directly contact with the film structure below the first organic film layer 121, thereby enhancing the tightness between the film layers, further avoiding peeling between the first organic film layer 121 and the isolation layer 14, extending the water and oxygen intrusion path, reducing the corrosion rate of the touch lead 152 and the metal layer in the array drive display layer 12, and delaying the failure of the touch function and the display function.

[0050] In summary, in order to prevent peeling from occurring between the first organic film layer 121 and the isolation layer 14, the present embodiment provides a groove structure 22 in at least one of the first organic film layer 121 and the isolation layer 14 to increase the contact area between the first organic film layer 121 and / or the isolation layer 14 and other film layers, thereby increasing the adhesion between the film layers, and effectively avoiding the separation of the first organic film layer 121 and the isolation layer 14 due to stress differences, thereby extending the water and oxygen intrusion path, reducing the corrosion rate of the metal layer in the touch lead 152 and the array drive display layer 12, and improving the life of the display panel.

[0051] Continue to refer Figure 2 and Figure 3Optionally, in the first frame area NA1, a first metal layer 122 is included between the first organic film layer 121 and the substrate 11, and the touch lead 152 and the first metal layer 122 are electrically connected through a first via 23; the groove structure 22 includes a first groove structure 221, and the isolation layer 14 forms the first groove structure 221. In the first frame area NA1, the first groove structure 221 is located between the retaining wall structure 21 and the first via 23.

[0052] The array driving display layer 12 may also include a first metal layer 122, and the first metal layer 122 is located on a side of the first organic film layer 121 close to the substrate 11. Then, in the first frame area NA1, the touch lead 152 and the first metal layer 122 are separated by at least an isolation layer 14, and the first metal layer 122 and the touch lead 152 are electrically connected through a first via 23 passing through the isolation layer 14. Then, the touch lead 152 in the touch electrode layer 15 is transferred to the driving circuit layer through the first via 23, and the driving circuit layer is used to transmit the touch signal in the bending area B2. After passing the bending area B2, it will be switched to the touch electrode layer 15 again, and connected to the binding pad 153 in the binding area B1. Exemplarily, the first metal layer 122 can be a source and drain layer in the driving circuit layer. The encapsulation glue 31 contacts the edge of the polarizer 16 and extends to cover the bending area B2. Due to space limitations, Figure 3 The cross-sectional view of the display panel only shows part of the first border area NA1, and does not show the bending area B2 and the structure of the bending area B2. The focus of this embodiment is to improve the first border area NA1. This embodiment only briefly introduces the line replacement of the touch lead 152 in the bending area B2 and the bending area B2.

[0053] Continue to refer Figure 2 In this embodiment, the touch lead 152 can form a bonding pad 153 for bonding the driver chip in the bonding area B1, and the first metal layer 122 can include a metal pad 1221 electrically connected to the bonding pad 153. The metal pad 1221 can electrically connect the signal line of the array drive display layer 12 to the bonding pad 153, thereby transmitting the signal of the driver chip to the array drive display layer 12. Figure 2 The process of the touch lead 152 changing its line to the touch electrode layer 15 again through the metal pad 1221 after passing through the bending area B2 is described. Figure 2 The touch lead 152 in the figure does not always exist in the touch electrode layer 15, but is switched from the touch electrode layer 15 to the first metal layer 122 before the bending area, and is switched from the first metal layer 122 to the touch electrode layer 15 after the bending area. However, in order to more clearly show the specific structure of the first frame area NA1, Figure 2 The specific structure of the bending zone is omitted, but in the actual production process, the display panel includes the specific structure of the bending zone.

[0054] In the present embodiment, the first frame area NA1 is formed with a groove structure 22 only in the isolation layer 14, which can be referred to as the first groove structure 221. The first groove structure 221 is located between the retaining wall structure 21 and the first via 23, and overlaps with the first organic film layer 121. The first organic film layer 121 can not only protect the metal layer under the first organic film layer 121, but also directly contact the touch lead 152, thereby reducing the contact area between the first organic film layer 121 and the isolation layer 14, avoiding peeling due to stress difference between the first organic film layer 121 and the isolation layer 14 in a high temperature environment, slowing down the process of water and oxygen erosion of the touch lead 152, and avoiding failure of the touch function, thereby further avoiding water and oxygen from penetrating the peeling first organic film layer 121 into the array drive display layer 12, thereby preventing failure of the display function.

[0055] Figure 8 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention, Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure of the lower frame area of ​​the display panel. Optionally, the display panel may further include: a polarizer 16, which is arranged on the side of the touch electrode layer 15 away from the substrate 11; the polarizer 16 covers the encapsulation layer 13 and extends to the first frame area NA1; the polarizer 16 has a first edge L1 in the first frame area NA1; in the direction perpendicular to the substrate 11, the first groove structure 221 at least partially overlaps with the first edge L1.

[0056] A polarizer 16 is also provided on the side of the touch electrode layer 15 away from the substrate 11. The polarizer 16 covers the encapsulation layer 13 and extends to the first frame area NA1. The polarizer 16 is bonded to the sealant 31 at the edge of the first frame area NA1 to protect the touch electrode layer 15 and the array drive display layer 12. In this embodiment, when setting the specific position of the first groove structure 221, the first groove structure 221 can be at least partially overlapped with the first edge L1, because the polarizer 16 is prone to deformation in a high temperature environment, resulting in a gap between the polarizer 16 and the sealant 31. In this embodiment, the first groove structure 221 is set corresponding to the above gap. When water vapor penetrates into the gap between the polarizer 16 and the sealant 31, the setting of the first groove structure 221 effectively avoids peeling of the isolation layer 14 and the first organic film layer 121, and avoids the situation where water vapor extends to the display area along with the peeling first organic film layer 121. In this embodiment, the first groove structure 221 is set to prevent water vapor from extending directly to the display area along the peeling gap between the isolation layer 14 and the first organic film layer 121, thereby increasing the input path of water vapor on the first organic film layer 121, thereby extending the corrosion time of water vapor on the touch lead 152 and the metal layer in the array drive display layer, and ultimately achieving the purpose of extending the life of the touch display panel.

[0057] Continue to refer Figure 1 and Figure 8 Optionally, the display area AA forms a second edge L2 extending along the first direction X near the first frame area NA1; the first groove structure 221 extends along the first direction X to form a strip structure. The display area AA forms a second edge L2 near the first frame area NA1, and the second edge L2 can extend along the first direction X, and the first groove structure 221 can also extend along the first direction X to form a strip structure. The strip structure overlaps with the first edge L1 of the polarizer 16. When water vapor penetrates into the gap between the polarizer 16 and the sealant 31, the setting of the first groove structure 221 effectively avoids peeling of the isolation layer 14 and the first organic film layer 121, and avoids the situation where water vapor extends toward the display area along the peeling first organic film layer 121. Optionally, the first edge L1 of the polarizer 16 can also extend along the first direction X. For example, Figure 8 As shown, the first groove structure 221 can extend along the first edge L1, and the projection of the first edge L1 on the substrate 11 is located in the first groove structure 221. The adhesion between the isolation layer 14 and the first organic film layer 121 is further improved, peeling of the isolation layer 14 and the first organic film layer 121 is avoided, the path length of water vapor intruding into the display panel is extended, and the corrosion of water vapor to the touch lead 152 and the metal layer in the array drive display layer is avoided, thereby improving the resistance of the touch function and the display function to high temperature environments.

[0058] Fig.10 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention, Fig.11 for Fig.10 The cross-sectional structure diagram of the lower frame area of ​​the display panel is shown in FIG. Fig.10 and Fig.11 As shown, optionally, the display panel has a plurality of first groove structures 221, and the plurality of first groove structures 221 are arranged in sequence along the direction from the display area AA to the first frame area NA1. In order to further avoid peeling of the isolation layer 14 and the first organic film layer 121, improve the adhesion between the film layers, increase the path for water vapor to invade the display panel, and delay the corrosion time of water vapor to the touch lead 152 and the metal layer in the array drive display layer, in this embodiment, a plurality of first groove structures 221 are sequentially arranged in the direction from the display area AA to the first frame area NA1, so as to extend the failure time of the touch function and the display function as much as possible, and improve the overall life of the display panel.

[0059] Continue to refer Fig.10 and Fig.11 Optionally, the display panel has a plurality of first groove structures 221, and at least one first groove structure 221 is provided on both sides of the first edge L1. In the direction from the display area AA to the first frame area NA1, the display panel may include a plurality of first groove structures 221, which effectively prevents water vapor from penetrating into the gap between the polarizer 16 and the sealant 31 from invading the display panel, improves the adhesion between the plurality of film layers, and prevents peeling of the film layers, thereby preventing the film layers from providing a transmission path for water vapor intrusion, prolonging the failure time of the touch function and the display function, and improving the overall life of the display panel.

[0060] Fig.12 A schematic diagram of a partially enlarged structure of another lower frame region of a display panel provided in an embodiment of the present invention, wherein optionally, the first groove structure 221 includes a plurality of first sub-groove structures 223, and the plurality of first sub-groove structures 223 are arranged in sequence along the first direction X. In this embodiment, the first groove structure 221 is not a long strip that penetrates the isolation layer 14 along the first direction X, but may include a plurality of discontinuous first sub-groove structures 223, which can also prevent water vapor that penetrates the gap between the polarizer 16 and the sealant 31 from invading the first organic film layer 121, improve the adhesion between the plurality of film layers, prevent peeling of the film layer (first organic film layer 121), slow down the corrosion rate of the touch lead and the metal layer in the array drive display layer, and avoid abnormalities in the touch function and the display function.

[0061] Continue to refer Fig.12Optionally, along the second direction Y, a plurality of first sub-groove structures 223 are arranged in a staggered manner, the second direction Y is the direction from the display area AA to the first frame area NA1; the first direction X intersects with the second direction Y. In this embodiment, the direction from the display area AA to the first frame area NA1 can be referred to as the second direction Y, the first direction X intersects with the second direction Y, and optionally, the first direction X and the second direction Y can be perpendicular to each other. In this embodiment, along the second direction Y, a plurality of first sub-groove structures 223 are arranged in a staggered manner, and in this embodiment, an array of first sub-groove structures 223 is formed around the gap between the polarizer 16 and the sealing glue 31. Whether along the first direction X or the second direction Y, the first groove structure 221 is formed in the isolation layer 14, so that the first organic film layer 121 is in direct contact with the touch lead, thereby enhancing the bonding force between the film layers and avoiding the peeling of the first organic film layer 121, thereby blocking the extension of water and oxygen along the peeling area of ​​the first organic film layer 121 to the display area, slowing down the corrosion rate of the touch lead and the metal layer in the array driving display layer, and effectively avoiding the failure of the display panel.

[0062] refer to Figure 4 and Figure 5 Optionally, in the first frame area NA1, the groove structure 22 includes a second groove structure 222, and the first organic film layer 121 is formed with the second groove structure 222, so that the isolation layer 14 contacts the film layer structure under the first organic film layer 121. In addition to being provided in the isolation layer 14, the groove structure 22 can also be provided in the first organic film layer 121, such as Figure 4 and Figure 5 As shown, the first organic film layer 121 is formed with a second groove structure 222, and the isolation layer 14 is in contact with the film layer structure (for example, the source and drain layer) below the first organic film layer 121. The isolation layer 14 is an inorganic film layer, and the film layer structure below the first organic film layer 121 is an inorganic film layer or a metal layer. The isolation layer 14 and the film layer structure below the first organic film layer 121 will not cause peeling due to the stress difference under the high temperature environment, thereby enhancing the adhesion between the film layers, especially avoiding large peeling between the first organic film layer 121 and the isolation layer 14, and avoiding providing a direct transmission path for water and oxygen invasion. The display panel provided in this embodiment can still effectively prevent water and oxygen from corroding the touch leads and the metal layer in the array drive display layer in a high temperature and high humidity environment, thereby improving the service life of the display panel.

[0063] Continue to refer Figure 1 and Figure 4Optionally, the display area AA forms a second edge L2 extending along the first direction X near the first border area NA1; the second groove structure 222 extends along the first direction X to form a strip structure. In this embodiment, a second edge L2 of the display area is formed between the display area AA and the first border area NA1. The second edge L2 can extend along the first direction X, and the second groove structure 222 extends along the first direction X to form a strip structure. Moreover, in a plane parallel to the substrate 11, the second groove structure 222 at least partially overlaps with the first edge L1 of the polarizer 16. The setting of the second groove structure 222 effectively avoids peeling of the isolation layer 14 and the first organic film layer 121. When water vapor penetrates into the gap between the polarizer 16 and the sealing glue 31, it avoids the situation where the water vapor extends toward the display area along with the first organic film layer 121 where peeling occurs. For example, as Figure 4 As shown, the first edge L1 of the polarizer 16 can also extend along the first direction X, and the projection of the first edge L1 on the substrate 11 falls into the second groove structure 222, further extending the transmission path of water vapor on the first organic film layer 121, delaying the corrosion time of the touch lead and the metal layer in the array drive display layer.

[0064] Continue to refer Figure 6 and Figure 7 Optionally, in the first frame area NA1, the groove structure 22 includes a first groove structure 221 and a second groove structure 222; the isolation layer 14 forms the first groove structure 221 so that the touch lead 152 contacts the first organic film layer 121; the first organic film layer 121 forms the second groove structure 222 so that the isolation layer 14 contacts the film layer structure below the first organic film layer 121. In this embodiment, the first groove structure 221 is formed in the isolation layer 14 at the same time, and the second groove structure 222 is formed in the first organic film layer 121. In the first frame area NA1, the touch leads 152 in some areas are in contact with the first organic film layer 121, and the isolation layer 14 in some areas is in contact with the film structure below the first organic film layer 121. Then, a strong adhesion can be formed between the film structure below the first organic film layer 121, the first organic film layer 121, the isolation layer 14 and the touch leads, and the peeling problem is not likely to occur. The peeling will not provide a direct transmission path for water and oxygen, extend the transmission path of water vapor on the first organic film layer 121, and avoid failure of the touch function and display function of the display panel. It should be noted that in a plane parallel to the substrate 11, there is no overlapping area between the first groove structure 221 and the second groove structure 222. Fig.13A schematic diagram of a partially enlarged structure of the lower frame area of ​​another display panel provided in an embodiment of the present invention, optionally, the display panel has a plurality of first groove structures 221 and a plurality of second groove structures 222; the first groove structures 221 and the second groove structures 222 are arranged alternately along the direction from the display area AA to the first frame area NA1. In this embodiment, in the second direction Y from the display area AA to the first frame area NA1, the first groove structure 221 and the second groove structure 222 can be alternately arranged, so as to form a uniform adhesion force between the first organic film layer 121 and the isolation layer 14 in the first frame area NA1, avoid the generation of a peeling area between the first organic film layer 121 and the isolation layer 14, thereby avoiding providing a direct transmission channel for external water oxygen, slowing down the corrosion rate of the metal layer in the touch lead 152 and the array drive display layer 12, and improving the reliability of the display panel.

[0065] Fig.14 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided in an embodiment of the present invention, optionally, the first groove structure 221 includes a plurality of first sub-groove structures 223; the second groove structure 222 includes a plurality of second sub-groove structures 224; along the first direction X, the first sub-groove structures 223 and the second sub-groove structures 224 are alternately arranged. Fig.13 The first groove structure 221 and the second groove structure 222 are alternately arranged along the second direction Y. Fig.14 The scheme in which the first groove structure 221 and the second groove structure 222 are alternately arranged along the first direction X is shown. Specifically, the first groove structure 221 includes a plurality of first sub-groove structures 223, and the second groove structure 222 includes a plurality of second sub-groove structures 224, and the first sub-groove structures 223 and the second sub-groove structures 224 are alternately arranged along the first direction X. The plurality of first sub-groove structures 223 and the second sub-groove structures 222 arranged in this embodiment can form a uniform adhesion between the first organic film layer 121 and the isolation layer 14, avoid peeling of the isolation layer 14 and the first organic film layer 121, prolong the corrosion time of water vapor on the touch leads and the metal layer in the array drive display layer, and finally achieve the purpose of prolonging the life of the touch display panel.

[0066] Fig.15 A schematic diagram of a partially enlarged structure of a lower frame area of ​​another display panel provided by an embodiment of the present invention, Fig.15 The isolation layer 14 is shown in the figure, and in order to show the first sub-groove structure 223 of the isolation layer 14, the structure of the polarizer 16 is omitted, and the reference Figure 3 and Fig.15Optionally, in the first frame area NA1, a first metal layer 122 is included between the first organic film layer 121 and the substrate 11, the touch lead 152 and the first metal layer 122 are electrically connected through the first via 23, the first metal layer 122 has a first metal edge L3 and a second metal edge L4 along the first direction X, and along the direction perpendicular to the display panel, the first organic film layer 121 covers the first metal edge L3 and the second metal edge L4. The array drive display layer 12 may also include a first metal layer 122. In this embodiment, the first metal layer 122 may be a source-drain electrode layer or other metal layer. In this embodiment, the specific film layer position of the first metal layer 122 is not particularly limited. After the touch lead 152 extends to the binding area B1, it is electrically connected to the first metal layer 122 through the first via 23, and the touch electrode layer 15 located in the first via 23 serves as the binding pad 153. Similarly, the metal pad 1221 in the first metal layer 122 electrically connected to the first via 23 can be the same size or similar size as the binding pad 153, so as to facilitate the transmission of the signal output by the driving chip on the binding pad 153 to the corresponding metal layer of the array driving display layer 12. In the present embodiment, the first metal layer 122 includes a first metal edge L3 and a second metal edge L4 that are relatively arranged along the first direction X. In a plane parallel to the substrate 11, the first organic film layer 121 covers the first metal edge L3 and the second metal edge L4. The first organic film layer 121 performs an edge wrapping treatment on the first metal edge L3 and the second metal edge L4 of the first metal layer 122. Because water vapor easily flows along the edge of the metal layer, in the present embodiment, the first organic film layer 121 performs an edge wrapping treatment on the first metal layer 122, thereby avoiding the transmission of external water vapor along the first metal edge L3 and the second metal edge L4, further delaying the invasion of water vapor into the array driving display layer 12, and avoiding failure of the display panel.

[0067] Fig.16A schematic diagram of a partially enlarged structure of another lower frame area of ​​a display panel provided in an embodiment of the present invention. Optionally, in the first frame area NA1, an opening structure 1211 is provided on the first organic film layer 121, and the opening structure 1211 is located between the retaining wall structure 21 and the groove structure 22. In the second direction Y, in the area between the retaining wall structure 21 and the groove structure 22, an opening structure 1211 can also be provided on the first organic film layer 121, thereby further increasing the infiltration path of external water vapor on the first organic film layer 121, and extending the time for water vapor to infiltrate the first metal edge L3 and the second metal edge L4 of the first metal layer 122, thereby preventing water vapor from flowing along the first metal edge L3 and the second metal edge L4, and preventing the first metal layer 122 from being corroded. In this embodiment, on the basis of the first organic film layer 121 hemming the first metal edge L3 and the second metal edge L4, an opening structure 1211 can be provided on the first organic film layer 121, thereby further delaying the time for external water vapor to reach the first metal edge L3 and the second metal edge L4. Optionally, the plurality of opening structures 1211 extend along the second direction Y and are arranged along the first direction X. Fig.16 As shown, in this embodiment, the opening structure 1211 extends along the second direction Y and is arranged in sequence along the first direction X, thereby further prolonging the time for external water vapor to reach the first metal edge L3 and the second metal edge L4, and preventing the first metal layer 122 from being corroded. Optionally, in a plane parallel to the substrate 11, the opening structure 1211 is a strip, a curve or a circle. Fig.16 A long strip extending along the second direction Y is shown in the figure. In addition, the opening structure 1211 can also be a curved shape extending along the second direction Y. Even, the opening structure 1211 can be directly set to a circle, that is, the setting of the opening structure 1211 can extend the penetration path of external water vapor on the first organic film layer 121.

[0068] Continue to refer Figure 1 and Fig.16, Optionally, the first frame area NA1 may also include a bending area B2 and a binding area B1; the first organic film layer 121 forms a third groove structure 225; the third groove structure 225 is located between the bending area B2 and the binding area B1, so that the isolation layer 14 is directly in contact with the inorganic film layer or the source-drain layer of the array drive display layer 12. In this embodiment, the first organic film layer 121 may not be provided in the bending area B2 and the binding area B1, that is, the bending area B2 and the binding area B1 form the third groove structure 225, which is convenient for the bending area B2 to perform a bending operation, and at the third groove structure 225, the isolation layer 14 is directly in contact with the inorganic film layer or the source-drain layer of the array drive display layer 12, for example, the isolation layer 14 is directly in contact with the first metal layer 122 or the inorganic insulating layer between the metal layers, so as to enhance the adhesion between the film layers of the bending area B2 and the binding area B1, further avoid the corrosion of the binding pad 153 and the metal pad 1221 by external water and oxygen, and extend the life of the display panel.

[0069] Continue to refer Fig.16 Optionally, the first metal layer 122 further includes a sheet-like auxiliary structure 1222 located in the binding area B1 and / or the bending area B2, and the sheet-like auxiliary structure 1222 is close to the edge of the first frame L5 in the first direction X. In this embodiment, the first metal layer 122 may have a sheet-like groove arrangement in the bending area B2 and the binding area B1, such as Fig.16 As shown, the first metal layer 122 forms a sheet-like auxiliary structure 1222 in the bending area B2 and the binding area B1. The sheet-like auxiliary structure 1222 is only arranged on the first frame L5 on one side of the bending area B2 and the binding area B1 along the first direction X. The first frame L5 can be a frame of the display panel close to the first metal edge L3, or a frame of the display panel close to the second metal edge L4. This embodiment takes the first frame L5 as an example of the frame of the display panel close to the first metal edge L3. The sheet-like auxiliary structure 1222 can further extend the transmission path of water vapor in the first metal layer 122. For example, Fig.16 As shown, in the bending area B2 and the binding area B1, the sheet-like auxiliary structure 1222 includes a first part 1223 and a second part 1224. The first part 1223 and the second part 1224 form a sickle shape, which extends the water vapor intrusion path, delays the corrosion time of the first metal layer 122, and improves the life of the display panel.

[0070] An embodiment of the present invention further provides a display device. Fig.17 A schematic diagram of a display device according to an embodiment of the present invention is shown in FIG. Fig.17 As shown, the display device provided by the embodiment of the present invention includes the display panel 200 described in any embodiment of the present invention. The display device can be as follows Fig.17The display device of the mobile phone shown in the figure may also be a display device of an electronic device such as a computer, a television, a smart wearable device, etc., and this embodiment does not specifically limit this.

[0071] The display device in the embodiment of the present invention includes the technical features of the display panel provided by any embodiment of the present invention, and has the beneficial effects of the corresponding technical features, which will not be described in detail here.

[0072] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a frame area surrounding the display area; the display panel comprises: a substrate; An array driving display layer is arranged on one side of the substrate; An encapsulation layer is disposed on a side of the array drive display layer away from the substrate; the encapsulation layer is located in the display area and at least a portion of the frame area; An isolation layer, disposed on a side of the encapsulation layer away from the substrate; A touch electrode layer is arranged on a side of the isolation layer away from the substrate; the touch electrode layer comprises touch electrodes and touch leads; the touch electrodes are arranged in the display area; the touch leads are electrically connected to the touch electrodes and extend to a first frame area between the display area and the binding area; The first frame region is provided with a retaining wall structure, and along a direction in which the retaining wall structure is away from the display area, at least a portion of the first frame region is provided with a first organic film layer; Along a direction perpendicular to the display panel, the first organic film layer, the isolation layer, and the touch lead overlap; In the first frame area, the isolation layer forms a groove structure so that the touch lead contacts the first organic film layer; and / or the first organic film layer forms a groove structure so that the isolation layer contacts the film layer structure below the first organic film layer.

2. The display panel according to claim 1, characterized in that: In the first frame area, a first metal layer is included between the first organic film layer and the substrate, and the touch lead and the first metal layer are electrically connected through a first via; the groove structure includes a first groove structure, and the isolation layer forms the first groove structure. In the first frame area, the first groove structure is located between the retaining wall structure and the first via.

3. The display panel according to claim 2, characterized in that: Also includes: A polarizer, disposed on a side of the touch electrode layer away from the substrate; The polarizer covers the encapsulation layer and extends to the first frame area; The polarizer has a first edge in the first frame area; In a direction perpendicular to the substrate, the first groove structure at least partially overlaps with the first edge.

4. The display panel according to claim 2, characterized in that: The display area is close to the first frame area to form a second edge extending along the first direction; The first groove structure extends along the first direction to form a strip structure.

5. The display panel according to claim 2, characterized in that: The display panel has a plurality of first groove structures, and the plurality of first groove structures are arranged in sequence along a direction from the display area to the first frame area.

6. The display panel according to claim 3, characterized in that: The display panel has a plurality of first groove structures, and at least one first groove structure is disposed on both sides of the first edge.

7. The display panel according to claim 4, characterized in that: The first groove structure includes a plurality of first sub-groove structures, and the plurality of first sub-groove structures are arranged in sequence along the first direction.

8. The display panel according to claim 7, characterized in that: Along a second direction, the plurality of first sub-groove structures are arranged in a staggered manner, the second direction being a direction from the display area to the first frame area; the first direction intersects with the second direction.

9. The display panel according to claim 1, characterized in that: In the first frame region, the groove structure includes a second groove structure, and the first organic film layer is formed with the second groove structure so that the isolation layer contacts the film layer structure below the first organic film layer.

10. The display panel according to claim 9, characterized in that: The display area is close to the first frame area to form a second edge extending along the first direction; The second groove structure extends along the first direction to form a strip structure.

11. The display panel according to claim 1, characterized in that: In the first frame area, the groove structure includes a first groove structure and a second groove structure; The isolation layer forms the first groove structure so that the touch lead contacts the first organic film layer; the first organic film layer forms a second groove structure so that the isolation layer contacts the film layer structure below the first organic film layer.

12. The display panel according to claim 11, characterized in that: The display panel has a plurality of first groove structures and a plurality of second groove structures; The first groove structures and the second groove structures are alternately arranged along a direction from the display area to the first frame area.

13. The display panel according to claim 11, characterized in that: The first groove structure includes a plurality of first sub-groove structures; the second groove structure includes a plurality of second sub-groove structures; Along the first direction, the first sub-groove structures and the second sub-groove structures are arranged alternately.

14. The display panel according to claim 1, characterized in that: In the first frame area, a first metal layer is included between the first organic film layer and the substrate, the touch lead and the first metal layer are electrically connected through a first via, the first metal layer has a first metal edge and a second metal edge along a first direction, and along a direction perpendicular to the display panel, the first organic film layer covers the first metal edge and the second metal edge.

15. The display panel according to claim 1, characterized in that: In the first frame region, an opening structure is provided on the first organic film layer, and the opening structure is located between the retaining wall structure and the groove structure.

16. The display panel according to claim 15, characterized in that: The plurality of opening structures extend along the second direction and are arranged along the first direction.

17. The display panel according to claim 15, characterized in that: In a plane parallel to the substrate, the opening structure is in the shape of a strip, a curve or a circle.

18. The display panel according to claim 14, characterized in that: The first border area also includes a bending area and a binding area; The first organic film layer forms a third groove structure; the third groove structure is located between the bending area and the binding area, so that the isolation layer directly contacts the inorganic film layer or the source and drain layer of the array drive display layer.

19. The display panel according to claim 18, characterized in that: The first metal layer further includes a sheet-like auxiliary structure located in the binding area and / or the bending area, and the sheet-like auxiliary structure is close to an edge of the first frame in the first direction.

20. A display device, characterized in that: A display panel comprising any one of claims 1 to 19.

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