Display panel and display device

Abstract

A display panel and a display device. The display panel comprises a main body area (A1) and a crack-resistant area (A2) provided at the periphery of the main body area. The display panel further comprises a substrate (10), an inorganic layer (11) provided on the substrate, and a crack-resistant dam (12) provided on the inorganic layer. At least one crack-resistant trench (111) is formed on the inorganic layer, the crack-resistant trench is arranged in the crack-resistant area, the crack-resistant trench is arranged around the main body area, and the crack-resistant dam at least comprises a stress release layer (120) having a ductility greater than that of the inorganic layer.

Description

Display panel and display device 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] In recent years, with the technological development of smart terminal devices and wearable devices, the demand for flat panel displays has become increasingly diverse. For example, organic light-emitting diode (OLED) display panels have self-luminous properties and are more energy-efficient than liquid crystal displays because they eliminate the need for a backlight module. Currently, the manufacture of display panels is done by performing an overall process on a motherboard and then cutting and separating it, and further completing the post-module process. Taking flexible display panels as an example, multiple flexible display panels are formed on a motherboard, and then the motherboard is cut to form independent flexible display panels. Then, according to the actual product appearance requirements, the independent flexible display panels are cut a second time according to the required appearance by laser cutting. SUMMARY OF THE INVENTION

[0003] In order to reduce cracks generated at the cutting edge of the display panel during the second cutting, anti-crack grooves are set at a certain distance from the cutting path on the inner side of the display panel, but the phenomenon of cracks extending inward still exists.

[0004] Therefore, it is necessary to provide a display panel and a display device to improve this defect.

[0005] Embodiments of the present application provide a display panel and a display device, which can prevent cracks in the anti-crack grooves from extending inward by changing the film layer structure at the anti-crack grooves.

[0006] An embodiment of the present application provides a display panel, comprising a main body area and an anti-crack area disposed around the main body area, the display panel further comprising:

[0007] substrate;

[0008] an inorganic layer disposed on the substrate, wherein at least one anti-crack groove is formed on the inorganic layer, the anti-crack groove is disposed in the anti-crack region, and the anti-crack groove is disposed around the main region; and

[0009] An anti-crack dam is arranged on the inorganic layer and located between at least part of the anti-crack groove and the main area. The anti-crack dam is arranged around the main area and includes at least a stress release layer whose ductility is greater than that of the inorganic layer.

[0010] An embodiment of the present application further provides a display device, including a display panel, wherein the display panel includes a main body area and an anti-crack area disposed around the main body area, and the display panel further includes:

[0011] substrate;

[0012] an inorganic layer disposed on the substrate, wherein at least one anti-crack groove is formed on the inorganic layer, the anti-crack groove is disposed in the anti-crack region, and the anti-crack groove is disposed around the main region; and

[0013] An anti-crack dam is arranged on the inorganic layer and located between at least part of the anti-crack groove and the main area. The anti-crack dam is arranged around the main area and includes at least a stress release layer whose ductility is greater than that of the inorganic layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below only disclose some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] FIG1 is a schematic diagram of a planar structure of a first display panel provided in an embodiment of the present application;

[0016] FIG2 is a cross-sectional view of the display panel shown in FIG1 along the line AA′;

[0017] FIG3 is a schematic diagram of a planar structure of a second display panel provided in an embodiment of the present application;

[0018] FIG4 is a cross-sectional view of the display panel shown in FIG3 along the BB' direction;

[0019] FIG5 is a cross-sectional view of a third display panel provided by an embodiment of the present application along the BB′ direction shown in FIG3 ;

[0020] FIG6 is a cross-sectional view of the display panel shown in FIG3 along the CC' direction;

[0021] FIG7 is a cross-sectional view of a fourth display panel provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0022] The following descriptions of the various embodiments refer to the accompanying figures to illustrate specific embodiments in which the present disclosure may be implemented. Directional terms used in this disclosure, such as "up," "down," "front," "back," "left," "right," "inside," "outside," and "side," refer only to the directions in the accompanying figures. Therefore, these directional terms are intended to illustrate and facilitate understanding of the present disclosure and are not intended to limit the present disclosure. In the figures, similarly structured elements are denoted by the same reference numerals.

[0023] The present disclosure is further described below with reference to the accompanying drawings and specific embodiments:

[0024] An embodiment of the present application provides a display panel, comprising a main area and an anti-crack area arranged around the main area, the display panel also comprising: a substrate; an inorganic layer arranged on the substrate, at least one anti-crack groove formed on the inorganic layer, the anti-crack groove being arranged in the anti-crack area, and the anti-crack groove being arranged around the main area; and an anti-crack dam arranged on the inorganic layer and located between at least part of the anti-crack groove and the main area, the anti-crack dam being arranged around the main area, the anti-crack dam comprising at least a stress release layer having a ductility greater than that of the inorganic layer, and by changing the film layer structure at the anti-crack groove, the cracks at the anti-crack groove can be prevented from extending inward.

[0025] According to an embodiment of the present application, the material of the stress release layer is metal, and the material of the inorganic layer is inorganic non-metallic material.

[0026] According to an embodiment of the present application, the stress release layer includes at least two stacked metal film layers, and the materials of the two adjacent metal film layers are different.

[0027] According to an embodiment of the present application, the display panel further includes a gate metal layer and a source-drain electrode metal layer, the gate metal layer includes a gate, and the source-drain electrode metal layer includes a source electrode and a drain electrode;

[0028] The stress release layer is provided in the same layer as one of the gate metal layer and the source / drain electrode metal layer and is made of the same material.

[0029] According to one embodiment of the present application, at least two anti-crack grooves are formed on the inorganic layer, and the anti-crack dam includes a first anti-crack dam and a second anti-crack dam arranged at intervals. The first anti-crack dam is arranged on the inorganic layer on the side of the anti-crack groove close to the main area, and the second anti-crack dam is arranged between two adjacent anti-crack grooves.

[0030] According to an embodiment of the present application, the first anti-crack dam is the stress release layer, and the stress release layer is disposed on a surface of the inorganic layer facing away from the substrate.

[0031] According to one embodiment of the present application, the second anti-crack dam includes an inorganic dam and the stress release layer. The stress release layer is arranged on the surface of the inorganic dam away from the substrate, and the ductility of the stress release layer is greater than the ductility of the inorganic dam.

[0032] According to an embodiment of the present application, the bottom of the anti-crack groove is a portion of the material layer in the inorganic layer close to the substrate.

[0033] According to an embodiment of the present application, the anti-crack groove penetrates the inorganic layer, and the bottom of the anti-crack groove is the substrate.

[0034] According to an embodiment of the present application, the display panel further includes an organic layer, which fills the anti-crack grooves and covers the anti-crack dams.

[0035] Beneficial effects of the embodiments of the present application: The present application provides a display panel, which includes a main area and an anti-crack area arranged on the periphery of the main area. The display panel also includes a substrate, an inorganic layer arranged on the substrate, and an anti-crack dam arranged on the inorganic layer. At least one anti-crack groove is formed on the inorganic layer, and the anti-crack groove is arranged in the anti-crack area. The anti-crack groove is arranged around the main area. By arranging the anti-crack dam on the side of the anti-crack groove close to the main area, the anti-crack dam is arranged around the main area. The anti-crack dam includes at least a stress release layer with a ductility greater than that of the inorganic layer, so that the anti-crack groove is separated from the main area by the anti-crack dam, and the height of the inorganic layer at the anti-crack dam is increased. The stress generated when cutting the edge of the display panel is gradually released during the process of climbing the anti-crack dam by the stress release layer, thereby avoiding the cracks at the anti-crack groove from extending to the main area of ​​the display panel.

[0036] As shown in Figure 1, Figure 1 is a schematic diagram of the planar structure of the first display panel provided in an embodiment of the present application. The display panel includes a main area A1 and an anti-crack area A2 arranged on the periphery of the main area A1. The main area A1 is an area mainly used to realize the image display function. The light-emitting devices, circuit structures, etc. required to realize the image display function are all arranged in the main area A1. There is no circuit structure in the anti-crack area A2. The anti-crack area A2 in the embodiment of the present application mainly plays a role in preventing cracks from extending to the main area A1.

[0037] Specifically, the main area A1 may include a display area located in the middle of the display panel and a non-display area arranged around the display area. The display area may be provided with a plurality of light-emitting devices distributed in an array and a pixel driving circuit for controlling and driving the light-emitting devices to emit light, as well as related signal lines. The non-display areas on the left and right sides of the display area can be used to set the gate driving circuit and related signal lines. The non-display area below the display area can be used to place fan-out lines and for binding and connecting integrated circuit chips or circuit boards.

[0038] As shown in Figure 2, Figure 2 is a cross-sectional view of the display panel shown in Figure 1 along the A-A' direction. Figure 2 only illustrates the anti-crack area A2 of the display panel and the partial film layer structure of the main area A1 close to the anti-crack area A. The display panel includes a substrate 10 and an inorganic layer 11 arranged on the substrate 10.

[0039] In the embodiments of the present application, the substrate 10 may be a single-layer structure or a multi-layer structure. When the substrate 10 is a single-layer structure, the material of the substrate 10 may be an organic material, which may be, but is not limited to, polyimide. When the substrate 10 is a multi-layer structure, the substrate 10 is a multi-layer structure formed by stacking organic and inorganic materials. For example, the substrate 10 may be a three-layer structure formed by stacking a first organic substrate, an inorganic substrate, and a second organic substrate in sequence, the inorganic substrate being disposed between the first organic substrate and the second organic substrate, the materials of the first organic substrate and the second organic substrate being both polyimide, and the material of the inorganic substrate may be, but is not limited to, silicon oxide, silicon nitride, or silicon oxynitride.

[0040] In practical applications, the number of film layers of the substrate 10 is not limited to 1 or 3 layers in the above embodiments, and can also be a multi-layer structure formed by stacking 2 or more layers of organic materials and / or inorganic materials, which is not limited here.

[0041] In the embodiments of the present application, the inorganic layer 11 may be a single-layer structure or a multi-layer structure. For example, the inorganic layer 11 may be a multi-layer structure, and the inorganic layer 11 may include, but is not limited to, a barrier layer 111, a first inorganic insulating layer 112, and a second inorganic insulating layer 113 stacked on the substrate 10. The barrier layer 111, the first inorganic insulating layer 112, and the second inorganic insulating layer 113 may be made of, but are not limited to, any one or a combination of silicon oxide, silicon nitride, or silicon oxynitride, and are not limited thereto.

[0042] Furthermore, at least one anti-crack groove is formed on the inorganic layer, and the anti-crack groove is arranged in the anti-crack area, and the anti-crack area is arranged around the main body area.

[0043] In one embodiment, as shown in FIG1 and FIG2 , an anti-crack groove 111 is formed on the inorganic layer 11. The anti-crack groove 111 is formed by a surface of the inorganic layer 11 that is away from the substrate 10 and is recessed toward the substrate 10. The anti-crack groove 111 is provided in the anti-crack area A2. The anti-crack groove 111 surrounds the left and right edges and the top edge of the main body area A1 and is continuously provided along the left and right edges and the top edge of the main body area A1. The anti-crack groove 111 does not surround the lower edge of the main body area A1. The lower portion of the main body area A1 can be regarded as the binding area of ​​the display panel, and the binding area does not need to be cut twice.

[0044] It should be noted that the portion of the anti-crack area A2 away from the main area A1 can be considered as the cutting area A3, and a cutting groove (not shown in the figure) is provided in the cutting area A3. During the second cutting, the display panel can be cut along the cutting groove to form the display panel shown in Figure 2.

[0045] In an embodiment of the present application, an anti-crack groove 111 is provided on the periphery of the main area A1 to remove the inorganic layer 11 in the anti-crack area A2, thereby preventing cracks generated in the inorganic layer 11 outside the main area A1 from extending to the main area A1 during the cutting process.

[0046] As shown in FIG2 , the bottom of the anti-crack groove 111 is the portion of the material layer in the inorganic layer 11 that is close to the substrate 10. That is, the bottom of the anti-crack groove 111 is located within the inorganic layer 11. The anti-crack groove 111 does not penetrate the entire film layer of the inorganic layer 11. A portion of the inorganic layer still remains at the bottom of the anti-crack groove 111. The portion of the inorganic layer remaining at the bottom of the anti-crack groove 111 may belong to the barrier layer 111, or may belong to at least two of the barrier layer 111 and the first inorganic insulating layer 112 and the second inorganic insulating layer 113. During the cutting process, the inorganic layer remaining at the bottom of the anti-crack groove 111 makes it easy for cracks to form at the edge of the display panel during cutting, and the cracks can extend toward the main area A1.

[0047] The display panel further includes an anti-crack dam 12 disposed on the inorganic layer 11 and located between at least a portion of the anti-crack groove 111 and the main area A1. The anti-crack dam 12 is located within the anti-crack area A2 and surrounds the main area A1. The anti-crack dam 12 includes at least a stress relief layer 120 having a greater ductility than the inorganic layer 11.

[0048] It should be noted that the anti-crack dam 12 is provided on the inorganic layer 11, which means that the anti-crack dam 12 is located on the side of the inorganic layer 11 away from the substrate 10 and is in direct contact with the surface of the inorganic layer 11 away from the substrate 10. By providing the anti-crack dam 12 on the inorganic layer 11 in the anti-crack area A2, the height of the inorganic layer 11 on the side of the anti-crack groove 111 close to the main area A1 can be increased, so that when the stress generated during the cutting process is transmitted to the anti-crack dam 12, it can be absorbed and gradually released by the stress release layer 120 with good ductility during the process of climbing the anti-crack dam 12. In this way, the stress generated during the cutting process can be prevented from being transmitted to the inorganic layer 11 in the main area A1, causing cracks in the inorganic layer 11 in the main area A1.

[0049] In a specific embodiment, an anti-crack groove 111 is formed on the inorganic layer 11, and an anti-crack dam 12 is formed on the inorganic layer 11 on the side of the anti-crack groove 111 close to the main area A1. The anti-crack dam 12 only has a stress release layer 120 whose ductility is greater than the ductility of the inorganic layer 11. The stress release layer 120 is the anti-crack dam 12, and the stress release layer 120 is arranged on the surface of the inorganic layer 11 facing away from the substrate 10.

[0050] In some other embodiments, the number of anti-crack dams 12 on the inorganic layer 11 on the side of the anti-crack groove 111 close to the main area A1 is not limited to 1 as in the above embodiments, but can also be 2 or more, and 2 or more anti-crack dams 12 can be arranged layer by layer around the main area A1.

[0051] In some embodiments, at least two anti-crack grooves are formed on the inorganic layer 11, and the anti-crack dam 12 includes a first anti-crack dam 12a and a second anti-crack dam 12b arranged at intervals. The first anti-crack dam 12a is arranged on the inorganic layer 11 on the side of the anti-crack groove 111 close to the main area A1, and the second anti-crack dam 12b is arranged between two adjacent anti-crack grooves 111.

[0052] In a specific embodiment, as shown in Figures 3 and 4 , Figure 3 is a schematic planar structural diagram of the second display panel provided in an embodiment of the present application, and Figure 4 is a cross-sectional view of the display panel shown in Figure 3 along the BB' direction. Two anti-crack grooves 111 are formed on the inorganic layer 11. Both anti-crack grooves 111 are located in the anti-crack area A2 and surround the main area A1 layer by layer. A first anti-crack dam 12a is provided on the inorganic layer 11 on the side of the two anti-crack grooves 111 near the main area A1, and a second anti-crack dam 12b is provided between the two anti-crack grooves 111.

[0053] The first inorganic bank 12a is a stress relief layer 120. Specifically, the first inorganic bank 12a is formed from the stress relief layer 120. The second inorganic bank 12b includes the stress relief layer 120 and an inorganic bank 121. The stress relief layer 120 is disposed on the surface of the inorganic bank 121 facing away from the substrate 10. The stress relief layer 120 has a greater ductility than the inorganic bank 121. The inorganic bank 121 has the same film structure as the inorganic layer 11. The inorganic bank 121 can be considered as a portion separated from the main body of the inorganic layer 11, formed when the anti-crack groove 111 is etched from the inorganic layer 11. The second anti-crack dam 12b can prevent cracks generated in the anti-crack groove 111 farther away from the main area A1 from being transmitted toward the side of the second anti-crack dam 12b closer to the main area A1, and the first anti-crack dam 12a on the inorganic layer 11 can further prevent cracks generated in the anti-crack area A2 from being transmitted toward the main area A1.

[0054] Compared with the embodiments shown in Figures 1 and 2, the embodiment shown in Figure 4 can further reduce the probability of cracks extending to the main area A1 by setting two anti-crack grooves 111, setting a first anti-crack dam 12a on the inorganic layer 11 on the side of the anti-crack groove 111 close to the main area A1, and setting a second anti-crack dam 12b between the two adjacent anti-crack grooves 111.

[0055] In actual applications, the number of stress release layers 120 on the inorganic layer 11 and the inorganic dam 121 is not limited to one in the above embodiment. Two or more stress release layers 120 spaced apart from each other can be set on the inorganic layer 11 and the inorganic dam 121. This is not a sole limitation here.

[0056] In one embodiment, please refer to FIG5 , which is a cross-sectional view of the third display panel provided by the embodiment of the present application along the BB' direction shown in FIG3 . Its structure is substantially the same as that of the display panel shown in FIG4 , with the following differences: the second anti-crack dam 12b is a stress release layer 120. That is, the second anti-crack dam 12b is formed solely by the stress release layer 120 and does not include the inorganic dam 121. The stress release layer 120 is disposed on the surface of the portion of the material layer near the substrate in the inorganic layer 11. In this structure, the stress release layer 120 can also absorb and gradually release the stress generated when cutting the edge of the display panel, reducing the risk of cracks extending and spreading to the main area A1.

[0057] In the embodiment of the present application, the material of the stress release layer 120 has greater ductility than the material of the inorganic layer 11. When the stress generated during the cutting process is transmitted to the anti-crack dam 12, the stress release layer 120 deforms under the action of the stress without generating cracks, and absorbs the stress, thereby preventing the stress from further extending to the main body area A1.

[0058] In some embodiments, the stress release layer 120 is made of metal, and the inorganic layer 11 is made of an inorganic non-metallic material. Compared to inorganic non-metallic materials, metal materials have excellent physical properties such as good ductility and high mechanical strength. They can resist and absorb the stress generated during the cutting process of the display panel edge, thereby improving the crack phenomenon of the display panel.

[0059] In a specific embodiment, the stress release layer 120 may be a single-layer metal structure. The material of the stress release layer 120 may be, but is not limited to, metal materials such as titanium, aluminum, copper, and molybdenum.

[0060] In some embodiments, the stress release layer 120 includes at least two stacked metal film layers, and the materials of the two adjacent metal film layers are different.

[0061] In one specific embodiment, the stress relief layer 120 is composed of a first metal film layer, a second metal film layer, and a third metal film layer (not shown) stacked in sequence. The second metal film layer is disposed between the first and third metal film layers. The first and third metal film layers are made of titanium, while the second metal film layer is made of aluminum. The titanium / aluminum / titanium metal stack structure has excellent ductility and mechanical strength, resisting and absorbing the stress generated during the cutting of the display panel edge, thereby improving the cracking phenomenon of the display panel. Furthermore, the titanium / aluminum / titanium metal stack structure has a low unit square resistance, thereby reducing the impedance of the stress relief layer 120.

[0062] In some other embodiments, the number of metal film layers in the stress release layer 120 is not limited to three layers in the above embodiment. The stress release layer 120 may also be composed of two or more than three metal film layers.

[0063] As shown in FIG6 , FIG6 is a cross-sectional view of the display panel shown in FIG3 along the C-C' direction. Its structure is substantially the same as that of FIG4 , except that FIG6 also schematically illustrates the film layer structure of the display area in the main area A1. The display panel may further include an active layer 13, a gate metal layer 14, and a source-drain electrode metal layer 15. The active layer 13 is disposed on the barrier layer 111, the gate metal layer 14 is disposed on the first inorganic insulating layer 112, and the source-drain electrode metal layer 15 is disposed on the second inorganic insulating layer 113. The gate metal layer 14 includes a gate 141 and a plurality of scan lines for transmitting gate control signals. The source-drain electrode metal layer 15 may include a source electrode 151, a drain electrode 152, and a plurality of data lines for transmitting display signals.

[0064] The display panel may further include a first organic layer 16 , a pixel definition layer 17 , an anode 18 , a light emitting layer 19 , a cathode 20 , an encapsulation layer 21 , a second organic layer 22 and a touch layer 23 stacked on the source / drain electrode metal layer 15 .

[0065] In one embodiment, the edge of the encapsulation layer 21 close to the anti-crack area A2 is disposed on a side of the anti-crack dam 12 close to the main area A1.

[0066] As shown in Figure 6, the encapsulation layer 21 is a thin film encapsulation structure. The encapsulation layer 21 can specifically include a first inorganic encapsulation layer 211, an organic encapsulation layer 212 and a second inorganic encapsulation layer 213. The first inorganic encapsulation layer 211, the organic encapsulation layer 212 and the second inorganic encapsulation layer 213 are all arranged in the main body area A1, and the edges of the first inorganic encapsulation layer 211 and the second inorganic encapsulation layer 213 close to the anti-crack area A2 are both arranged on the side of the anti-crack dam 12 close to the main body area A2. In this way, the stress generated by the edge of the display panel during cutting can be avoided, causing cracks in the first inorganic encapsulation layer 211 and the second inorganic encapsulation layer 213, resulting in failure of the encapsulation layer 21.

[0067] The touch layer 23 may include a first touch insulating layer 231, at least one touch metal layer 232, and a second touch insulating layer 233. The touch metal layer 232 is disposed between the first touch insulating layer 231 and the second touch insulating layer 233. The touch metal layer 232 may include multiple touch electrodes and touch signal traces. In the embodiments of the present application, the touch type of the display panel may be a self-capacitive touch structure or a mutual-capacitive touch structure, which is not a sole limitation. The first organic layer 16, the second organic layer 22, the first touch insulating layer 231, and the second touch insulating layer 233 may all be distributed in the main area A1 and the anti-crack area A2.

[0068] It should be noted that Figure 6 only illustrates a portion of the film layer structure of the main area A1 and the anti-crack area A2 of the display panel, and does not represent the film layer structure of the display panel in actual application. The number of source and drain electrode metal layers and gate metal layers in the display panel is not limited to the single layer as described in the above embodiment. The display panel may also have two gate metal layers and / or two source and drain electrode metal layers, which is not limited here.

[0069] In one embodiment, the stress release layer 120 is provided in the same layer as the source-drain electrode metal layer 15. As shown in FIG3 , the stress release layer 120 is provided on the surface of the second inorganic insulating layer 113 facing away from the substrate 10, and the source-drain electrode metal layer 15 is provided on the surface of the second inorganic insulating layer 113 facing away from the substrate 10. The film structure and material of the stress release layer 120 are the same as the film structure and material of the source-drain electrode metal layer 15. In the actual preparation process, the metal film forming process of the source-drain electrode metal layer can be used to simultaneously prepare the source-drain electrode metal layer 15 and the stress release layer 120 on the surface of the second inorganic insulating layer 113 facing away from the substrate 10. In this way, the stress release layer 120 can be added without increasing the process steps, thereby preventing the cracks generated by cutting the display panel from extending into the main area A1.

[0070] In one embodiment, the stress relief layer 120 is disposed on the same layer as the gate metal layer (not shown). Specifically, the source / drain electrode metal layer 15 is disposed on the surface of the first inorganic insulating layer 112 facing away from the substrate 10, and the stress relief layer 120 is disposed on the surface of the first inorganic insulating layer 112 facing away from the substrate 10. The second inorganic insulating layer 113 may not be disposed above the stress relief layer 120.

[0071] Furthermore, the display panel further includes an organic layer, which fills the anti-crack grooves and covers the anti-crack dams.

[0072] As shown in FIG1 , in the anti-crack region A2, the thickness of the organic layer 24 is greater than the sum of the depth of the anti-crack groove 112 and the thickness of the anti-crack dam 12. The organic layer 24 fills the anti-crack groove 112 and covers the anti-crack dam 12. The organic layer 24 is made of polyimide, which has excellent mechanical properties, high tensile strength and high elastic modulus. Polyimide exhibits minimal deformation when subjected to edge stress during display panel cutting, making it less susceptible to cracking. This can mitigate the phenomenon of cracking during display panel cutting.

[0073] In one embodiment, the organic layer 24 is provided on the same layer as the first organic layer 16 , and the organic layer 24 and the first organic layer 16 are made of the same material. The organic layer 24 can be formed simultaneously with the process of the first organic layer 16 , thereby avoiding the increase in the process steps of the display panel caused by the addition of the organic layer 24 .

[0074] Please refer to Figure 7, which is a cross-sectional view of a fourth display panel provided in an embodiment of the present application. Its structure is substantially the same as that shown in Figure 1, with the difference being that the anti-crack grooves 111 in the embodiment shown in Figure 7 penetrate the inorganic layer 11, and the bottom of the anti-crack grooves 111 is the substrate 10, i.e., the anti-crack grooves 111 can expose the substrate 10. By having the anti-crack grooves 111 penetrate the inorganic layer 11 in the anti-crack area A2 and using the organic layer 24 to fill the anti-crack grooves 111 and cover the anti-crack dams 12, the phenomenon of cracks generated when the display panel is cut can be improved.

[0075] According to the display panel provided in the above embodiments of the present application, an embodiment of the present application further provides a display device, which includes the display panel provided in any one of the above embodiments.

[0076] Beneficial effects of the embodiments of the present application: The embodiments of the present application provide a display panel and a display device, the display panel including a main area and an anti-crack area arranged on the periphery of the main area, the display panel also including a substrate, an inorganic layer arranged on the substrate, and an anti-crack dam arranged on the inorganic layer, at least one anti-crack groove is formed on the inorganic layer, the anti-crack groove is arranged in the anti-crack area, and the anti-crack groove surrounds the main area, by arranging the anti-crack dam on the side of the anti-crack groove close to the main area, the anti-crack dam surrounds the main area, so that the anti-crack groove is separated from the main area by the anti-crack dam, and the height of the inorganic layer at the anti-crack dam is increased, so that the stress generated when cutting at the edge of the display panel can be gradually released in the process of climbing the anti-crack dam, thereby avoiding the cracks at the anti-crack groove from extending to the main area of ​​the display panel.

[0077] In summary, although the present application is disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.

Claims

1. A display panel, comprising a main body area and an anti-crack area arranged at the periphery of the main body area, the display panel further comprising: substrate; an inorganic layer, disposed on the substrate, wherein at least one anti-crack groove is formed on the inorganic layer, the anti-crack groove is disposed in the anti-crack region, and the anti-crack groove is disposed around the main region; and An anti-crack dam is arranged on the inorganic layer and located between at least part of the anti-crack groove and the main area. The anti-crack dam is arranged around the main area and includes at least a stress release layer whose ductility is greater than that of the inorganic layer.

2. The display panel according to claim 1, wherein: The material of the stress release layer is metal, and the material of the inorganic layer is inorganic non-metallic material.

3. The display panel according to claim 2, wherein: The stress release layer has at least two stacked metal film layers, and the materials of the two adjacent metal film layers are different.

4. The display panel according to claim 2, wherein: The display panel further includes a gate metal layer and a source-drain electrode metal layer, wherein the gate metal layer includes a gate electrode, and the source-drain electrode metal layer includes a source electrode and a drain electrode; The stress release layer is provided in the same layer as one of the gate metal layer and the source-drain electrode metal layer and is made of the same material.

5. The display panel according to claim 1, wherein: At least two anti-crack grooves are formed on the inorganic layer, and the anti-crack dams include a first anti-crack dam and a second anti-crack dam that are arranged at intervals. The first anti-crack dam is arranged on the inorganic layer on the side of the anti-crack groove close to the main area, and the second anti-crack dam is arranged between two adjacent anti-crack grooves.

6. The display panel according to claim 5, wherein: The first anti-crack dam is the stress release layer, and the stress release layer is arranged on the surface of the inorganic layer away from the substrate.

7. The display panel according to claim 5, wherein: The second anti-crack dam includes an inorganic dam and the stress release layer, wherein the stress release layer is disposed on a surface of the inorganic dam facing away from the substrate, and the ductility of the stress release layer is greater than that of the inorganic dam.

8. The display panel according to claim 1, wherein: The bottom of the anti-crack groove is a portion of the material layer in the inorganic layer close to the substrate.

9. The display panel according to claim 1, wherein: The anti-crack groove penetrates the inorganic layer, and the bottom of the anti-crack groove is the substrate.

10. The display panel according to claim 1, wherein: The display panel further includes an organic layer filling the anti-crack grooves and covering the anti-crack dams.

11. A display device, comprising a display panel, the display panel comprising a main body area and an anti-crack area arranged at the periphery of the main body area, the display panel further comprising: substrate; an inorganic layer, disposed on the substrate, wherein at least one anti-crack groove is formed on the inorganic layer, the anti-crack groove is disposed in the anti-crack region, and the anti-crack groove is disposed around the main region; and An anti-crack dam is arranged on the inorganic layer and located between at least part of the anti-crack groove and the main area. The anti-crack dam is arranged around the main area and includes at least a stress release layer whose ductility is greater than that of the inorganic layer.

12. The display device according to claim 11, wherein: The material of the stress release layer is metal, and the material of the inorganic layer is inorganic non-metallic material.

13. The display device according to claim 12, wherein: The stress release layer has at least two stacked metal film layers, and the materials of the two adjacent metal film layers are different.

14. The display device according to claim 12, wherein: The display panel further includes a gate metal layer and a source-drain electrode metal layer, wherein the gate metal layer includes a gate electrode, and the source-drain electrode metal layer includes a source electrode and a drain electrode; The stress release layer is provided in the same layer as one of the gate metal layer and the source-drain electrode metal layer and is made of the same material.

15. The display device according to claim 11, wherein: At least two anti-crack grooves are formed on the inorganic layer, and the anti-crack dams include a first anti-crack dam and a second anti-crack dam that are arranged at intervals. The first anti-crack dam is arranged on the inorganic layer on the side of the anti-crack groove close to the main area, and the second anti-crack dam is arranged between two adjacent anti-crack grooves.

16. The display device according to claim 15, wherein: The first anti-crack dam is the stress release layer, and the stress release layer is arranged on the surface of the inorganic layer away from the substrate.

17. The display device according to claim 15, wherein: The second anti-crack dam includes an inorganic dam and the stress release layer, wherein the stress release layer is disposed on a surface of the inorganic dam facing away from the substrate, and the ductility of the stress release layer is greater than that of the inorganic dam.

18. The display device according to claim 11, wherein: The bottom of the anti-crack groove is a portion of the material layer in the inorganic layer close to the substrate.

19. The display device according to claim 11, wherein: The anti-crack groove penetrates the inorganic layer, and the bottom of the anti-crack groove is the substrate.

20. The display device according to claim 11, wherein: The display panel further includes an organic layer filling the anti-crack grooves and covering the anti-crack dams.

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