Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a packaging layer and a touch control layer, wherein the packaging layer and the touch control layer are sequentially arranged on the substrate in a stacked mode; the substrate comprises a hole opening area and an isolation area surrounding the hole opening area; the touch layer is provided with at least one slot, the slot is located in the isolation area, the slot extends from the surface, away from the substrate, of the touch layer to the direction of the substrate, and the slot penetrates to the surface, away from the substrate, of the packaging layer to the maximum extent. According to the display panel, the structure of the touch layer of the isolation area is not continuous, stress is dispersed, stress concentration is avoided, then the problem that in the manufacturing process of the display panel, due to stress concentration, a film layer is peeled off or cracks appear is solved to a certain extent, the display effect of the display panel is guaranteed, and the display effect of the display panel is improved. And the yield and the product competitiveness of the display panel are improved.

Description

Technical Field

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

[0002] With the development of display technology, in order to achieve a higher screen-to-body ratio, the "perforated screen" is currently more popular. Among them, the "perforated screen" refers to a display screen whose display area includes a physical hole. The area where the physical hole is located can also be called an opening area. The display area also includes an isolation area surrounding the opening area, and a pixel area surrounding the isolation area. In order to ensure the packaging yield, metal patterns made of metal materials such as isolation pillars and dams are generally arranged in the isolation area. In addition, in order to reduce the thickness of the display substrate included in the display screen as much as possible on the basis of realizing touch control, the related technology can also be used to set a multi-layer thin film touch pattern made of metal material on the side of the packaging film in the display substrate away from the base substrate.

[0003] However, due to the stress change of the film layer in the isolation area, the CVD & Touch film layer (touch film layer) peels after laser cutting, which in turn affects the product yield and quality. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a display panel and a display device. By setting at least one groove on the touch layer, the groove is located in the isolation area, which is conducive to making the touch layer structure in the isolation area discontinuous, and is conducive to dispersing stress and avoiding stress concentration. Therefore, the problem of film peeling or cracking due to stress concentration during the display panel manufacturing process is solved to a certain extent, thereby ensuring the display effect of the display panel and improving the yield rate and product competitiveness of the display panel.

[0005] In a first aspect, the present invention provides a display panel, comprising: a base substrate, and an encapsulation layer and a touch layer sequentially stacked on the base substrate; The substrate base comprises an opening area and an isolation area surrounding the opening area; At least one groove is arranged on the area of ​​the touch layer covering the isolation area. The groove extends from the surface of the touch layer away from the base substrate toward the base substrate, and the groove penetrates to the surface of the packaging layer away from the base substrate at most.

[0006] As an optional solution, the isolation area includes a plurality of isolation columns arranged at intervals, and the groove is located in the area between two adjacent isolation columns corresponding to the touch layer; Alternatively, the groove is located in the area corresponding to the touch layer and the isolation column.

[0007] As an optional solution, the width of the groove is smaller than the distance between two adjacent isolation pillars.

[0008] As an optional solution, the width of the groove is greater than or equal to 7 μm and less than or equal to 10 μm.

[0009] As an optional solution, the groove includes a first groove and a second groove, the first groove is arranged in the area between two adjacent isolation columns corresponding to the touch layer, the second groove is arranged in the area corresponding to the touch layer and the isolation column, and a gap is formed between the first groove and the second groove.

[0010] As an optional solution, the touch layer includes a barrier layer, a first metal layer, an insulating layer and a second metal layer which are stacked in sequence along a direction away from the base substrate, and a groove is provided on the barrier layer and / or the insulating layer, and the orthographic projection of the groove on the base substrate does not overlap with the orthographic projection of the first metal layer and the second metal layer on the base substrate.

[0011] As an optional solution, the barrier layer and the insulating layer are respectively provided with grooves, and the position of the grooves on the barrier layer corresponds to the position of the grooves on the insulating layer; Alternatively, the slot positions located in the barrier layer and the slot positions located in the insulation layer are alternately distributed.

[0012] As an optional solution, the touch layer further includes a protective layer, which covers the surface of the second metal layer facing away from the base substrate, and the protective layer is further provided with grooves.

[0013] As an optional solution, the interior of the groove is filled with a color film layer.

[0014] In a second aspect, the present invention provides a display device comprising the display panel of the first aspect.

[0015] The display panel of the present invention has grooves on the touch layer, the grooves are located in the isolation area, and defects are formed on the grooved touch layer, so that the touch layer structure is discontinuous, which is conducive to dispersing stress and avoiding stress concentration; and the grooves penetrate to the surface of the encapsulation layer away from the substrate, which is conducive to avoiding stress concentration in the touch layer while ensuring the integrity of the encapsulation layer structure and reliably protecting the light-emitting layer. The display panel of the present invention has grooves on the touch layer to a certain extent to solve the problem of film peeling or cracking due to stress concentration during the display panel manufacturing process, which is conducive to avoiding the appearance of growth-type dark spots or rainbow patterns on the display panel, ensuring the normal display effect of the display panel, and improving the yield rate and product competitiveness of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1It is a schematic diagram of the structure of the opening area and the isolation area of ​​the display panel; Figure 2 A schematic cross-sectional structure diagram of a display panel according to an embodiment of the present application; Figure 3 A schematic diagram of a cross-sectional structure of an isolation area in a display panel according to an embodiment of the present application; Figure 4 A schematic diagram of a touch layer groove structure in a display panel according to an embodiment of the present application; Figure 5 A schematic diagram of a first touch layer groove structure in a display panel according to an embodiment of the present application; Figure 6 A schematic diagram of a second touch layer groove structure in a display panel according to an embodiment of the present application; Figure 7 A schematic diagram of a third touch layer groove structure in a display panel according to an embodiment of the present application; Figure 8 This is a schematic diagram of a fourth touch layer groove structure in a display panel according to an embodiment of the present application; Fig. 9 This is a schematic diagram of a fifth touch layer groove structure in a display panel according to an embodiment of the present application; Fig.10 This is a schematic diagram of a sixth touch layer groove structure in a display panel according to an embodiment of the present application; Fig.11 Schematic diagram of the seventh touch layer groove structure in the display panel of the embodiment of the present application.

[0017] In the figure, 100. Display panel; A1. Opening area; A2. Isolation area.

[0018] 10. substrate, 11. buffer layer, 12. gate insulating layer, 13. interlayer dielectric layer, 14. passivation layer; 20. encapsulation layer, 21. first inorganic encapsulation layer, 22. organic encapsulation layer, 23. second inorganic encapsulation layer; 30. touch layer, 31. barrier layer, 32. insulation layer, 33. second metal layer, 34. protection layer, 35. slotting; 40. Isolation column, 41. Barrier dam; 50. Color film layer. DETAILED DESCRIPTION

[0019] The present application is 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 relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] The embodiment of the present application provides a display panel 100, such as Figure 1-3 As shown, it includes: a base substrate 10, and a packaging layer 20 and a touch layer 30 stacked in sequence on the base substrate 10; The substrate 10 includes an opening area A1 and an isolation area A2 surrounding the opening area A1; At least one groove 35 is disposed on the area of ​​the touch layer 30 covering the isolation area A2 . The groove 35 extends from the surface of the touch layer 30 away from the base substrate 10 toward the base substrate 10 , and the groove 35 penetrates to the surface of the packaging layer 20 away from the base substrate 10 at most.

[0022] It is understandable that the substrate backplane 10 plays a certain supporting role for the display panel. When making the display panel, an opening area A1 will be reserved so that functional components with other functions, such as a camera, can be placed in the opening area A1. An isolation area A2 is set between the display area and the opening area A1. The isolation area A2 can prevent water vapor from entering the display area from the opening area A1, thereby preventing water vapor from damaging the display area, and preventing ink from flowing to the opening area A1 during the preparation of the organic packaging mold by the inkjet printing (Ink Jet Printer, referred to as IJP) process, so as to improve the quality of the display panel. The substrate 10 can be, but is not limited to, glass, PI (Polyimide), PET (Polyethylene glycolterephthalate), silicon (single crystal silicon or polycrystalline silicon), etc. In the embodiment of the present application, the substrate 10 can be a silicon substrate, such as single crystal silicon, and the corresponding display panel is a silicon-based display panel.

[0023] Among them, the opening area A1 is an area where a physical hole is formed, and the physical hole can be formed by laser cutting. A camera and a sensor structure can be arranged below the physical hole; the shape of the opening area A1 can be a regular shape or an irregular shape such as a circle, an ellipse, a triangle, a rectangle, a polygon, etc., and the embodiments of the present application do not make any specific limitation on the shape of the opening area A1.

[0024] A buffer layer 11 is also stacked on the base substrate 10, and the buffer layer 11 is used to protect the base substrate 10. In some embodiments, a driving layer and a light-emitting layer are sequentially stacked on the buffer layer 11. The driving layer includes a pixel driving circuit and a circuit layer, the pixel driving circuit includes a plurality of transistors and at least one capacitor, the circuit layer includes a plurality of metal layers and a plurality of interlayer insulating layers, each metal layer is isolated from the transistor by the interlayer insulating layer, and is coupled to the transistor through a contact hole, so that the electrical signal (such as a driving voltage or a driving current) in the pixel driving circuit can be sequentially transmitted through the transistor, each metal layer, and then transmitted to the light-emitting layer to drive the light-emitting layer to emit light.

[0025] It can also be understood that a pixel defining layer is provided on the base substrate 10, and the pixel defining layer can separate each sub-pixel of the light-emitting layer to prevent each sub-pixel from interfering with each other in the display panel. Optionally, the pixel defining layer can be made of a light-transmitting material so that the light of the light-emitting layer can better pass through the pixel defining layer. Optionally, the pixel defining layer can be made of an opaque material, which can improve the light absorption of the pixel defining layer, reduce the reflectivity of the display panel, further reduce the optical crosstalk between adjacent light-emitting layers, and improve the display effect of the display panel.

[0026] The light-emitting layer includes a first electrode, a light-emitting functional layer and a second electrode. The first electrode is a cathode, and the second electrode is an anode. The material of the first electrode may be, but is not limited to, indium tin oxide (ITO), indium zinc oxide (IZO), a metal or an alloy (such as magnesium, titanium, silver or an alloy formed by multiple metals); the material of the second electrode may be, but is not limited to, a metal such as titanium, silver or an alloy formed by multiple metals such as titanium, silver or the like; the light-emitting functional layer includes a light-emitting material layer, a hole injection layer, a hole transport layer, an electron blocking layer, an electron injection layer, an electron transport layer and a hole blocking layer.

[0027] Optionally, the light-emitting layer may be a single type of light-emitting device, which is a light-emitting device that can emit a single color of light, for example, a light-emitting device that can emit white light. Optionally, the light-emitting layer may also be different types of light-emitting devices, which are light-emitting devices that can emit different colors of light, for example, any number of light-emitting devices that can emit blue light, light-emitting devices that can emit red light, light-emitting devices that can emit green light, light-emitting devices that can emit yellow light, and light-emitting devices that can emit white light.

[0028] The encapsulation layer 20 and the touch layer 30 are disposed on the side of the light-emitting layer away from the base substrate 10. The encapsulation layer 20 generally includes an organic encapsulation layer 22 and a first inorganic encapsulation layer 21 and a second inorganic encapsulation layer 23 that are alternately arranged. Exemplarily, the encapsulation layer 20 is a three-layer stacked structure, specifically including a first inorganic encapsulation layer 21, a second inorganic encapsulation layer 23, and an organic encapsulation layer 22 located between the first inorganic encapsulation layer 21 and the second inorganic encapsulation layer 23.

[0029] The touch layer 30 may generally include a barrier layer 31 (TBL), a first metal layer (TMA), an insulating layer 32 (TLD) and a second metal layer 33 (TMB) stacked along a direction away from the base substrate 10 , wherein the first metal layer and the second metal layer 33 form a capacitor structure.

[0030] It should be noted that the touch layer 30 is provided with a slot 35, where the slot 35 can also be a via, that is, it runs through the entire touch layer 30, and the orthographic projection of the slot 35 on the substrate 10 can be a circle, square, rectangle, triangle or other regular or irregular shape, and the number of the slots 35 can be one, two or more than two, etc. The embodiment of the present application does not specifically limit the shape and number of the slots 35. The slot 35 is provided on the touch layer 30, and the touch layer 30 forms a defect at the position of the slot 35, so that the structure of the touch layer 30 is discontinuous, the stress is dispersed, and the stress concentration is avoided, which is conducive to avoiding the peeling of the touch layer 30 and reducing the stress on the packaging layer 20.

[0031] It can also be understood that, due to the existence of the isolation area A2, the groove 35 is located on the touch layer 30 of the isolation area A2, and the groove 35 extends along the surface of the touch layer away from the substrate 10 toward the substrate 10, and the groove 35 can extend to any area inside the touch layer 30, that is, when viewed along the light emitting direction facing away from the display panel, a recessed structure is formed on the touch layer 30, and the recessed structure makes the touch layer 30 have a graphical design, so that the local structure of the touch layer 30 is discontinuous, which can achieve stress dispersion and avoid stress concentration. Of course, in some other embodiments, the groove 35 can also extend through to the surface of the encapsulation layer 20 away from the substrate 10, so as to avoid stress concentration in the touch layer 30 without damaging the encapsulation layer 20, thereby ensuring a good encapsulation effect of the encapsulation layer 20.

[0032] The display panel of the embodiment of the present application solves the problem in the prior art that the existence of the isolation area A2 is conducive to the peeling of the touch film layer during the preparation of the display panel, resulting in display failure of the display panel. The display panel of the embodiment of the present application, by setting a groove 35 on the touch layer 30, the groove 35 is located in the isolation area A2, and the groove 35 forms a defect on the touch layer 30, so that the structure of the touch layer 30 is discontinuous, which is conducive to dispersing stress and avoiding stress concentration; and the groove 35 penetrates to the surface of the encapsulation layer 20 away from the base substrate 10 at the maximum, which is conducive to avoiding the stress concentration phenomenon in the touch layer 30, while ensuring the integrity of the encapsulation layer 20 structure and reliably protecting the light-emitting layer. In the display panel of the present invention, the groove 35 on the touch layer 30 solves the problem of film peeling or cracking due to stress concentration during the production of the display panel to a certain extent, which is conducive to avoiding the growth of dark spots or rainbow patterns on the display panel, ensuring the normal display effect of the display panel, and improving the yield rate and product competitiveness of the display panel.

[0033] As an achievable method, Figure 2-5 As shown, the isolation area A2 includes a plurality of isolation columns 40 arranged at intervals, and the groove 35 is located in the area between two adjacent isolation columns 40 corresponding to the touch layer 30; Alternatively, the groove 35 is located in a region corresponding to the touch layer 30 and the isolation column 40 .

[0034] The number of the isolation columns 40 may be two or more, and the implementation of the present application does not impose any specific limitation on this.

[0035] It can be understood that the groove 35 is located in the area between two adjacent isolation pillars 40 corresponding to the touch layer 30, that is, the orthographic projection of the groove 35 on the base substrate 10 is located in the area between the orthographic projections of the two adjacent isolation pillars 40 on the base substrate 10, and the orthographic projection of the groove 35 on the base substrate 10 does not overlap with the orthographic projections of the two adjacent isolation pillars 40 on the base substrate 10, so as to ensure that the stress of the touch layer 30 is released while the protection of the isolation pillars 40 on the light-emitting layer is not damaged; In other embodiments, Figure 5 As shown, the groove 35 is located in the area corresponding to the touch layer 30 and the isolation column 40 , that is, along the direction perpendicular to the base substrate 10 , the groove 35 is located directly above the isolation column 40 .

[0036] The orthographic projection of the groove 35 on the base substrate 10 completely overlaps with the orthographic projection of the isolation column 40 on the base substrate 10; or, the orthographic projection of the groove 35 on the base substrate 10 is located within the area formed by the orthographic projection of the isolation column 40 on the base substrate 10; or, the orthographic projection of the isolation column 40 on the base substrate 10 is located within the area formed by the orthographic projection of the groove 35 on the base substrate 10.

[0037] In the embodiment of the present application, the position of the slot 35 is flexibly arranged and convenient to process, and can reliably disperse the stress of the touch layer 30 , thereby ensuring that the display panel has a good display effect and improving the yield rate and product competitiveness of the display panel.

[0038] In some embodiments, the isolation area A2 also includes at least one blocking dam 41, and the blocking dam 41 and the isolation column 40 can be located on the same layer, and of course the blocking dam 41 and the isolation column 40 can also be located in different layers; the driving layer includes an interlayer dielectric layer 13 and a passivation layer 14, and a plurality of isolation columns 40 can be spaced apart on the surface of the interlayer dielectric layer 13 away from the base substrate 10; or a plurality of isolation columns 40 can be spaced apart on the surface of the passivation layer 14 away from the base substrate 10; correspondingly, at least one blocking dam 41 can be disposed on the surface of the interlayer dielectric layer 13 away from the base substrate 10, or at least one blocking dam 41 can also be disposed on the surface of the passivation layer 14 away from the base substrate 10; the orthographic projections of the isolation column 40 and the blocking plate on the base substrate 10 do not overlap; the encapsulation layer 20 covers the isolation column 40 and the blocking dam 41.

[0039] It can be understood that the isolation column 40 can be a single-layer structure, and of course it can also be a stacked structure of two or more layers. The areas at the two ends of the middle of the isolation column 40 form a recessed area, thereby forming an intermittent effect on the light-emitting layer, which is beneficial to blocking the water and oxygen invasion channel; the blocking dam 41 can also be a single-layer structure, and of course it can also be a stacked structure of two or more layers. The embodiments of the present application do not make specific limitations on this.

[0040] In some other embodiments, along the direction perpendicular to the surface of the base substrate 10, the isolation column 40 is located below the blocking dam 41, that is, the isolation column 40 is arranged in a sunken manner, so that a certain accommodation space is formed above the isolation column 40. In the process of preparing the organic encapsulation layer 2220, the accommodation space can constitute a certain buffer for the organic encapsulation material, alleviate the film layer peeling problem caused by stress concentration in the area near the blocking dam 41, and at the same time, the isolation column 40 is arranged in a sunken manner, which can also play the role of water vapor and oxygen.

[0041] For example, Figure 2As shown, the display panel includes a base substrate 10, and a buffer layer 11, a gate insulating layer 12, an interlayer dielectric layer 13 and a passivation layer 14 stacked in a direction away from the base substrate 10, a blocking dam 41 and a plurality of spaced isolation columns 40 are arranged on the passivation layer 14, the blocking dam 41 and the isolation columns 40 are spaced apart, a first inorganic encapsulation layer 21 covers the isolation columns 40, an organic encapsulation layer 22 (IJP layer) covers the first inorganic encapsulation layer 21, the blocking dam 41 is used to prevent the overflow of the organic encapsulation material during the preparation of the organic encapsulation layer 22, a second inorganic encapsulation layer 23 covers the organic encapsulation layer 22 and the blocking dam 41, and a blocking layer 31, a first metal layer, an insulating layer 32, a second metal layer 33 and a protective layer 34 are sequentially stacked on the side of the second inorganic encapsulation layer 23 away from the base substrate 10.

[0042] As an achievable manner, the width of the groove 35 is smaller than the distance between two adjacent isolation pillars 40 .

[0043] It should be noted that the width of the slot 35 refers to the direction parallel to the base substrate 10 (eg Figure 4 The distance between two adjacent isolation columns 40 refers to the distance between two adjacent isolation columns 40 along the direction parallel to the base substrate 10; In this embodiment, the width of the slot 35 is smaller than the distance between two adjacent isolation columns 40 , which is beneficial to release the stress of the touch layer 30 while avoiding damaging the isolation effect of the isolation column 40 on water vapor.

[0044] In a preferred embodiment, the width of the groove 35 is greater than or equal to 7 μm and less than or equal to 10 μm.

[0045] Specifically, the width of the groove 35 may be, but is not limited to, 7 μm, 8 μm, 9 μm, or 10 μm.

[0046] The width of the slot 35 in the embodiment of the present application is convenient for processing, and helps to ensure a good water vapor isolation effect of the isolation column 40 while releasing the stress of the touch layer 30 .

[0047] In some embodiments, the groove 35 includes a first groove and a second groove, the first groove is arranged in the area between two adjacent isolation columns 40 of the touch layer 30, the second groove is arranged in the area corresponding to the touch layer 30 and the isolation column 40, and a gap is formed between the first groove and the second groove.

[0048] It can be understood that the first groove refers to the groove 35 set in the area between two adjacent isolation columns 40 on the touch layer 30, and the second groove refers to the groove 35 set in the area corresponding to the touch layer 30 and the isolation column 40, that is, in the direction perpendicular to the base substrate 10, the second groove is located above the isolation column 40.

[0049] In this embodiment, the first groove and the second groove are spaced apart to further make the structure of the touch layer 30 in the isolation area A2 discontinuous, so that the stress of the touch layer 30 is more evenly dispersed, thereby avoiding film peeling due to stress concentration, thereby improving the display effect of the display panel.

[0050] As an achievable method, Figure 2 The touch layer 30 includes a barrier layer 31, a first metal layer (not shown in the figure), an insulating layer 32 and a second metal layer 33 which are stacked in sequence along a direction away from the base substrate 10, and a groove 35 is provided on the barrier layer 31 and / or the insulating layer 32, and the orthographic projection of the groove 35 on the base substrate 10 does not overlap with the orthographic projection of the first metal layer and the second metal layer 33 on the base substrate 10.

[0051] According to actual process requirements, the blocking layer 31 is provided with a groove 35 ; or the insulating layer 32 is provided with a groove 35 ; or both the blocking layer 31 and the insulating layer 32 are provided with a groove 35 ; this embodiment does not make any specific limitation to this.

[0052] It can be understood that when the grooves 35 are provided on both the barrier layer 31 and the insulating layer 32, the orthographic projection of the grooves 35 of the barrier layer 31 on the base substrate 10 and the projection of the grooves 35 of the insulating layer 32 on the base substrate 10 may not overlap, that is, the grooves 35 of the barrier layer 31 and the grooves 35 of the insulating layer 32 are staggered with each other; of course, the orthographic projection of the grooves 35 of the barrier layer 31 on the base substrate 10 and the projection of the grooves 35 of the insulating layer 32 on the base substrate 10 may also completely overlap, that is, the grooves 35 of the barrier layer 31 and the grooves 35 of the insulating layer 32 are interpenetrating; wherein, the shape of the grooves 35 of the barrier layer 31 and the shape of the grooves 35 of the insulating layer 32 may be the same or different, and the size of the grooves 35 of the barrier layer 31 and the size of the grooves 35 of the insulating layer 32 may be the same or different; It can also be understood that the orthographic projection of the groove 35 on the base substrate 10 does not overlap with the orthographic projection of the first metal layer and the second metal layer 33 on the base substrate 10, that is, the groove 35 of the barrier layer 31 and / or the insulating layer 32 is staggered with the first metal layer and the second metal layer 33, which is beneficial to protecting the first metal and the second metal, and avoiding short circuit between the first metal layer and the second metal layer 33, thereby ensuring the touch function of the touch layer 30.

[0053] For example, Figure 4As shown, the isolation area A2 includes a passivation layer 14, two isolation columns 40 are arranged at intervals on the side of the passivation layer 14 away from the base substrate 10, the encapsulation layer 20 covers the isolation column 40, and the encapsulation layer 20 is stacked with a barrier layer 31 and an insulating layer 32 in sequence away from the base substrate 10, and the insulating layer 32 is provided with a groove 35 in the area between the two isolation columns 40, and the groove 35 extends from the surface of the insulating layer 32 away from the base substrate 10 toward the base substrate 10 to the surface of the barrier layer 31 away from the base substrate 10.

[0054] For example, Figure 6 As shown, the isolation area A2 includes a passivation layer 14, two isolation columns 40 are arranged at intervals on the side of the passivation layer 14 away from the base substrate 10, the encapsulation layer 20 covers the isolation column 40, and the encapsulation layer 20 is stacked with a barrier layer 31 and an insulating layer 32 in sequence on the side away from the base substrate 10. The barrier layer 31 and the insulating layer 32 are located in an area between the two isolation columns 40. The groove 35 extends from the surface of the insulating layer 32 away from the base substrate 10 toward the base substrate 10 to the surface of the encapsulation layer 20 away from the base substrate 10, that is, the groove 35 of the barrier layer 31 and the groove 35 of the insulating layer 32 are connected.

[0055] For example, Figure 7 As shown, the entire insulating layer 32 is removed, and a groove 35 is formed from the surface of the barrier layer 31 away from the base substrate 10 toward the base substrate 10 to the surface of the encapsulation layer 20 away from the base substrate 10 .

[0056] In a preferred embodiment, the barrier layer 31 and the insulating layer 32 are each provided with a groove 35, and the position of the groove 35 on the barrier layer 31 corresponds to the position of the groove 35 on the insulating layer 32; Alternatively, the positions of the openings 35 located in the barrier layer 31 and the positions of the openings 35 located in the insulating layer 32 are alternately distributed.

[0057] In the present embodiment, grooves 35 are respectively provided on the barrier layer 31 and the insulating layer 32, which is beneficial to further improve the stress dispersion effect of the touch layer 30, and ensure that the film layer of the touch layer 30 can reliably realize the blocking and insulating functions, while avoiding film peeling or cracking due to stress concentration on the touch layer 30 and the barrier layer 31, which is further beneficial to avoid the phenomenon of rainbow lines on the display panel, thereby improving the yield rate and product competitiveness of the display panel.

[0058] As an achievable method, Figure 8 As shown, the touch layer 30 further includes a protection layer 34 . The protection layer 34 covers the surface of the second metal layer 33 facing away from the base substrate 10 . A groove 35 is further provided on the protection layer 34 .

[0059] The protective layer 34 is disposed on the surface of the second metal layer 33 away from the base substrate 10 , and covers the entire insulating layer 32 , which is beneficial to protecting the structure of the entire touch layer 30 and preventing external water vapor from entering the touch layer 30 , thereby ensuring that the touch layer 30 works reliably.

[0060] In this embodiment, the protective layer 34 is provided with grooves 35 , which is beneficial to dispersing the stress of the protective layer 34 and reducing the stress concentration phenomenon of the protective layer 34 , thereby avoiding peeling of the protective layer 34 .

[0061] In some embodiments, the positions of the grooves 35 of the protective layer 34, the grooves 35 of the insulating layer 32, and the grooves 35 of the barrier layer 31 may be staggered; in other embodiments, the grooves 35 of the protective layer 34, the grooves 35 of the insulating layer 32, and the grooves 35 of the barrier layer 31 may also be mutually interpenetrating, that is, the grooves 35 of the protective layer 34 sequentially penetrate the protective layer 34, the insulating layer 32, and the barrier layer 31 to the surface of the encapsulation layer 20 away from the base substrate 10; in other embodiments, the grooves 35 of the protective layer 34, the grooves 35 of the insulating layer 32, and the grooves 35 of the barrier layer 31 are arbitrarily interlaced. Two of them are interconnected and staggered with the other one; for example, the groove 35 of the protective layer 34 and the groove 35 of the insulating layer 32 are interconnected, and are staggered with the groove 35 of the barrier layer 31; that is, the groove 35 of the protective layer 34 sequentially penetrates the protective layer 34 and the insulating layer 32 to the surface of the barrier layer 31 facing away from the substrate 10; for another example, the groove 35 of the insulating layer 32 and the groove 35 of the barrier layer 31 are interconnected, and are staggered with the groove 35 of the protective layer 34, that is, the groove 35 of the insulating layer 32 sequentially penetrates the insulating layer 32 and the barrier layer 31 to the surface of the encapsulation layer 20 facing away from the substrate 10.

[0062] It is understandable that the number of the slots 35 on the protective layer 34 may be one, two or more than two, and the shape of the slots 35 on the protective layer 34 may be any shape, such as but not limited to a circle, annular or strip.

[0063] As an achievable method, Figure 9-11 As shown, the interior of the groove 35 is filled with a color filter layer 50 .

[0064] The color film layer 50 can also be understood as color film glue; It is understandable that the groove 35 is provided in the touch layer 30, and the touch layer 30 forms a step difference at the position of the groove 35, which may reduce the adhesion between the film layers. In this way, filling the groove 35 of the touch layer 30 with color film glue is beneficial to covering the step difference and improving the adhesion between the film layers. At the same time, since the color film glue and the touch layer 30 are made of different materials, stress concentration can also be avoided and film peeling can be prevented.

[0065] It can also be understood that after the color filter layer 50 is filled in the groove 35 , the surface of the protection layer 34 away from the base substrate 10 can be a smooth planar structure. Of course, the surface of the protection layer 34 away from the base substrate 10 can also be uneven.

[0066] In addition, since the isolation area A2 does not need to be displayed, the inside of the groove 35 and the surface of the protection layer 34 facing away from the base substrate 10 can be filled with color film glue of different colors.

[0067] In some embodiments, the thickness of the color filter layer 50 may be 3 μm-4 μm.

[0068] Specifically, the thickness of the color filter layer 50 may be, but is not limited to, 3 μm, 3.1 μm, 3.2 μm, 3.4 μm, 3.6 μm, 3.8 μm or 4 μm.

[0069] The thickness of the color filter layer 50 in this embodiment complies with the existing processing technology and is convenient for processing.

[0070] For example, Fig. 9 As shown, the isolation area A2 includes a passivation layer 14, two isolation columns 40 are arranged at intervals on the side of the passivation layer 14 away from the base substrate 10, the encapsulation layer 20 covers the isolation column 40, and the encapsulation layer 20 is stacked with a barrier layer 31, an insulating layer 32 and a protective layer 34 in sequence on the side away from the base substrate 10, and the protective layer 34 is provided with a groove 35 in the area between the two isolation columns 40. The groove 35 extends from the surface of the protective layer 34 away from the base substrate 10 toward the base substrate 10 to the surface of the barrier layer 31 away from the base substrate 10, and the groove 35 is filled with a blue color filter layer 50, and the area on the surface of the protective layer 34 near the groove 35 is also coated with red and green color filter layers 50 respectively, wherein the color filter layer 50 on the surface of the protective layer 34 and the color filter layer 50 protruding from the surface of the protective layer 34 in the groove 35 area are different in thickness.

[0071] For example, Fig.10 As shown, the isolation area A2 includes a passivation layer 14, two isolation columns 40 are arranged at intervals on the side of the passivation layer 14 away from the base substrate 10, the encapsulation layer 20 covers the isolation column 40, and the encapsulation layer 20 is stacked with a barrier layer 31, an insulating layer 32 and a protective layer 34 in sequence on the side away from the base substrate 10, and the protective layer 34 is provided with a groove 35 in the area between the two isolation columns 40, and the groove 35 extends from the surface of the protective layer 34 away from the base substrate 10 toward the base substrate 10 to the surface of the barrier layer 31 away from the base substrate 10, and the groove 35 is filled with a blue color filter layer 50, and the area on the surface of the protective layer 34 near the groove 35 is also coated with red and green color filter layers 50 respectively, wherein the color filter layer 50 on the surface of the protective layer 34 and the color filter layer 50 protruding from the surface of the protective layer 34 in the groove 35 area are the same in thickness.

[0072] For example, Fig.11 As shown, the isolation area A2 includes a passivation layer 14, two isolation columns 40 are arranged at intervals on the side of the passivation layer 14 away from the base substrate 10, the encapsulation layer 20 covers the isolation column 40, and the encapsulation layer 20 is stacked with a barrier layer 31, an insulating layer 32 and a protective layer 34 in sequence on the side away from the base substrate 10, and the protective layer 34 is provided with a groove 35 in the area between the two isolation columns 40, and the groove 35 extends from the surface of the protective layer 34 away from the base substrate 10 toward the base substrate 10 to the surface of the barrier layer 31 away from the base substrate 10, and the groove 35 is filled with a red color filter layer 50, and the area on the surface of the protective layer 34 near the groove 35 is also coated with a blue and green color filter layer 50 respectively, wherein the color filter layer 50 on the surface of the protective layer 34 and the color filter layer 50 protruding from the surface of the protective layer 34 in the groove 35 area are the same in thickness.

[0073] In summary, the display panel of the embodiment of the present application is provided with a groove 35 on the touch layer 30, and the groove 35 is located in the isolation area A2. The groove 35 forms a defect on the touch layer 30, so that the structure of the touch layer 30 is discontinuous, which is conducive to dispersing stress and avoiding the phenomenon of stress concentration; and the groove 35 penetrates as far as the surface of the encapsulation layer 20 away from the base substrate 10, which is conducive to avoiding the phenomenon of stress concentration in the touch layer 30 while ensuring the structural integrity of the encapsulation layer 20 and reliably protecting the light-emitting layer. In the display panel of the present invention, the groove 35 on the touch layer 30 solves the problem of film peeling or cracking due to stress concentration during the display panel manufacturing process to a certain extent, which is conducive to avoiding the appearance of growth-type dark spots or rainbow patterns on the display panel, ensuring the normal display effect of the display panel, and improving the yield rate and product competitiveness of the display panel; Moreover, grooves 35 are respectively provided in the barrier layer 31 and the insulating layer 32 of the touch layer 30, which can reliably disperse the stress, reduce the stress on the encapsulation layer 20, and effectively avoid film peeling; in addition, after the protective layer 34 is grooved 35, the groove 35 area and the groove 35 area are filled with the color filter layer 50, which is beneficial to improve the adhesion between the film layers.

[0074] In a second aspect, the present invention provides a display device, including the display panel 100 of the first aspect. It is understandable that the display device has all the features and advantages of the above display panel, which will not be repeated here. In short, the display device has high quality and yield, high display resolution, and high product competitiveness.

[0075] For example, the display device is a product with an image display function. For example, the display device can be: a display, a television, a billboard, a digital photo frame, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a camcorder, a viewfinder, a navigator, a vehicle, a large-area wall, a home appliance, an information query device (such as business query equipment for e-government, banks, hospitals, power and other departments), a monitor, etc. The display device can also be a microdisplay or a product containing a microdisplay. The product containing a microdisplay can be any of a smart watch, a smart bracelet, a helmet display, a stereo display mirror, and an AR device (such as AR glasses), a VR device (such as VR glasses), etc. For example, a microdisplay can be a display with a display size ranging from about 0.2 inches to about 2.5 inches, but is not limited thereto. It can be understood that the microdisplay can also be a display with a smaller display size, such as a display size less than or equal to 0.2 inches.

[0076] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the panel or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0077] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A display panel, characterized in that: include: A base substrate and an encapsulation layer and a touch layer sequentially stacked on the base substrate; The substrate base comprises an opening area and an isolation area surrounding the opening area; At least one groove is provided on the touch layer, and the groove is located in the isolation area. The groove extends from the surface of the touch layer away from the base substrate toward the base substrate, and the groove penetrates to the surface of the packaging layer away from the base substrate at its maximum.

2. The display panel according to claim 1, characterized in that: The isolation area includes a plurality of isolation pillars arranged at intervals, and the groove is located in the area between two adjacent isolation pillars corresponding to the touch layer; Alternatively, the groove is located in a region of the touch layer corresponding to the isolation column.

3. The display panel according to claim 2, characterized in that: The width of the slot is smaller than the distance between two adjacent isolation columns.

4. The display panel according to claim 3, characterized in that: The width of the groove is greater than or equal to 7 μm and less than or equal to 10 μm.

5. The display panel according to claim 2, characterized in that: The grooves include a first groove and a second groove, the first grooves are arranged at intervals in the area between two adjacent isolation columns of the touch layer, the second grooves are arranged at intervals in the area corresponding to the touch layer and the isolation columns, and a gap is formed between the first groove and the second groove.

6. The display panel according to any one of claims 1 to 5, characterized in that: The touch layer includes a barrier layer, a first metal layer, an insulating layer, and a second metal layer stacked in sequence along a direction away from the base substrate. The barrier layer and / or the insulating layer is provided with the groove, and the orthographic projection of the groove on the base substrate does not overlap with the orthographic projection of the first metal layer and the second metal layer on the base substrate.

7. The display panel according to claim 6, characterized in that: The blocking layer and the insulating layer are respectively provided with the grooves, and the position of the grooves in the blocking layer corresponds to the position of the grooves in the insulating layer; Alternatively, the slot positions located in the barrier layer and the slot positions located in the insulating layer are distributed alternately.

8. The display panel according to claim 6, characterized in that: The touch control layer further includes a protection layer, which covers the surface of the second metal layer facing away from the base substrate, and the groove is also arranged on the protection layer.

9. The display panel according to any one of claims 1 to 5, characterized in that: The interior of the groove is filled with a color film layer.

10. A display device, characterized in that A display panel comprising any one of claims 1 to 9.

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