Display panel and display device

Abstract

The invention discloses a display panel and a display device, the display panel comprises a display area, an opening area and an isolation area, and the isolation area is located between the display area and the opening area; the display panel comprises a substrate, a dam and an isolation part, the dam is arranged on one side of the substrate and located in the isolation area; the isolation part is arranged on the substrate and located in the isolation area, the isolation part comprises at least two first isolation columns located on the side, close to the display area, of the dam, and each first isolation column comprises a first insulating layer and a first metal layer located on the side, away from the substrate, of the first insulating layer; wherein a first isolation groove is formed between every two adjacent first isolation columns, and the first metal layer of at least one of the two first isolation columns protrudes towards the first isolation groove relative to the first insulation layer. The use performance and the service life of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] Embodiments of the present application provide a display panel and a display device, aiming to improve the performance of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, which includes a display area, an opening area and an isolation area, wherein the isolation area is located between the display area and the opening area; the display panel includes a substrate, a dam and an isolation portion; the dam is arranged on one side of the substrate, and the dam is located in the isolation area; the isolation portion is arranged on the substrate and located in the isolation area, and the isolation portion includes at least two first isolation columns located on a side of the dam close to the display area, the first isolation columns include a first insulating layer and a first metal layer located on a side of the first insulating layer away from the substrate; wherein a first isolation groove is formed between two adjacent first isolation columns, and the first metal layer of at least one of the two first isolation columns protrudes relative to the first insulating layer toward the first isolation groove.

[0006] According to an implementation of the first aspect of the present application, the first isolation column also includes a second insulating layer, which is located on a side of the first metal layer away from the substrate; wherein the first metal layer of at least one of the two adjacent first isolation columns is protruding relative to the second insulating layer toward the first isolation groove.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the first metal layers of two adjacent first isolation columns are both protruded toward the same first isolation groove relative to the first insulation layer or the second insulation layer.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, among the plurality of first isolation columns, the first insulating layer or the second insulating layer of the first isolation column close to the dam covers the surface of the first metal layer on one side facing the dam.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first metal layer on the substrate has a first edge close to the dam, the orthographic projection of the first insulating layer or the second insulating layer on the substrate has a second edge close to the dam, and the first edge is located on the side of the second edge away from the dam.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, a second isolation trench is formed between the dam and the adjacent first isolation column, and the second insulation layer covers the first insulation layer or the first metal layer on a side facing the second isolation trench.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the dam includes a third insulating layer and a second metal layer located on a side of the third insulating layer away from the substrate, and the second metal layer protrudes relative to the third insulating layer toward the second isolation groove.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the dam further includes a fourth insulating layer, the fourth insulating layer is located on a side of the second metal layer away from the substrate, and the second metal layer protrudes relative to the fourth insulating layer toward the second isolation groove.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the second metal layer includes a first metal portion and a second metal portion spaced apart from each other, the first metal portion protruding toward the second isolation groove relative to the third insulating layer, and the second metal portion protruding toward the opening area relative to the third insulating layer.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the second metal layer is arranged on the same layer as the first metal layer; the third insulating layer is arranged on the same layer as the first insulating layer; and the fourth insulating layer is arranged on the same layer as the second insulating layer.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the first isolation column also includes a base, which is located on a side of the first insulating layer close to the substrate; the first insulating layer includes a first part and a second part, the first part covers the side surface of the base facing the first isolation groove, and the second part covers a part of the top surface of the base facing away from the substrate, a first opening is provided between the second part and the first part, and the first metal layer extends from the first opening toward the first isolation groove and covers a side surface of the first part facing away from the substrate.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the first insulating layer further includes a third portion, and the third portion covers a side surface of the substrate facing away from the first isolation trench.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the substrate includes a third metal layer, and the first metal layer is connected to the third metal layer via the first opening.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes a second isolation column located in the isolation area, the second isolation column is located on the side of the dam facing the opening area, and a third isolation groove is formed between the dam and the adjacent second isolation column.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the second isolation column includes a fifth insulating layer and a fourth metal layer located on a side of the fifth insulating layer away from the substrate, and the fourth metal layer protrudes relative to the fifth insulating layer toward the third isolation groove.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the second isolation column also includes a sixth insulation layer, the sixth insulation layer is located on a side of the fourth metal layer away from the substrate, and the fourth metal layer protrudes relative to the sixth insulation layer toward the third isolation groove.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the second isolation column also includes a fifth metal layer, the fifth metal layer is located on the side of the fifth insulating layer close to the substrate, the fifth insulating layer is provided with a second opening, and the fourth metal layer is connected to the fifth metal layer via the second opening.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth metal layer is disposed on the same layer as the first metal layer; and the fifth insulating layer is disposed on the same layer as the first insulating layer.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the number of the second isolation columns is two or three, and a fourth isolation groove is formed between two adjacent second isolation columns.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth metal layer of at least one of the two adjacent second isolation columns is arranged to protrude relative to the fifth insulation layer toward the fourth isolation groove.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, in two adjacent second isolation columns, the fifth insulating layer or the sixth insulating layer of the second isolation column away from the dam covers the surface of the fourth metal layer on one side away from the dam.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a driving circuit layer, a seventh insulating layer, a first conductive layer, an eighth insulating layer and a light-emitting device that are located in the display area and are stacked in sequence in a direction away from the substrate, and the first conductive layer electrically connects the driving circuit layer and the light-emitting device; wherein the first conductive layer is arranged on the same layer as the first metal layer, and the seventh insulating layer is arranged on the same layer as the first insulating layer.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further comprises an encapsulation layer, which is located on a side of the light-emitting device facing away from the substrate, and the encapsulation layer extends to the isolation region and covers an inner wall of the first isolation groove.

[0028] An embodiment of the second aspect of the present application further provides a display device, comprising the display panel provided by any of the above-mentioned embodiments of the first aspect.

[0029] In the display panel provided in the embodiment of the present application, the first isolation column located on the dam close to the display area can be attached to the packaging layer, further reducing the possibility of water vapor and oxygen invading the display area from the opening area, and the number of the first isolation columns is greater than one, which can provide a better packaging effect. The design of the first isolation groove can extend the invasion path of water vapor and oxygen, so that the packaging layer attached to the first isolation groove has a better barrier effect on water and oxygen. The structure of the first metal layer protruding toward the first isolation groove relative to the first insulating layer can effectively isolate the luminescent material at this position when the luminescent material is evaporated. The breakage of the luminescent material is more thorough, which is conducive to etching and removing redundant luminescent materials. Water vapor and oxygen are not easy to invade the display area through redundant luminescent materials, thereby improving the reliability of the packaging, reducing dark spots in the hole area, and improving the yield, thereby improving the performance and life of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0031] Figure 1 is a structural schematic diagram of a display panel provided by a related embodiment;

[0032] Figure 2 This is provided by an embodiment of the present application Figure 1 One of the cross-sectional views at AA in the middle;

[0033] Figure 3 This is provided by an embodiment of the present application Figure 1 The second section view at AA in the middle;

[0034] Figure 4 This is a schematic structural diagram of a first isolation column in a display panel provided by an embodiment of the present application;

[0035] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a display area and an isolation area in a display panel provided by an embodiment of the present application;

[0036] Figure 6 It is a structural schematic diagram of a first isolation column, a dam, and a second isolation column in a display panel provided by an embodiment of the present application;

[0037] Figure 7 It is a schematic structural diagram of a second isolation column in a display panel provided in one embodiment of the present application.

[0038] Description of reference numerals:

[0039] 10a, display area; 10b, opening area; 10c, isolation area;

[0040] 1. substrate; 11. driving circuit layer; 12. seventh insulating layer; 13. first conductive layer; 14. eighth insulating layer; 15. light emitting device;

[0041] 2. dam; 211. third insulating layer; 212. second metal layer; 212a. first metal portion; 212b. second metal portion; 213. fourth insulating layer;

[0042] 3. Isolation portion; 30a. First opening; 30b. Second opening; 310. First isolation groove; 320. Second isolation groove; 330. Third isolation groove; 340. Fourth isolation groove;

[0043] 31, first isolation column; 311, first insulating layer; 311a, first part; 311b, second part; 311c, third part; 312, first metal layer; 313, second insulating layer; 314, substrate; 315, third metal layer;

[0044] 32, second isolation column; 321, fifth insulating layer; 322, fourth metal layer; 323, sixth insulating layer; 324, fifth metal layer;

[0045] 4. Encapsulation layer; 41. First inorganic layer; 42. Organic layer; 43. Second inorganic layer. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0047] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] In a display panel, in order to increase the screen-to-body ratio of the display panel, an opening is usually provided in the non-display area of ​​the display panel for installing functional components such as a camera module, thereby helping to reduce the overall thickness of the camera module and the display panel stacking area. However, in the process of forming the opening, there is a possibility that cracks will appear in the inorganic film layer in the display panel (such as the inorganic layer in the encapsulation layer) and the cracks will extend to the display area, so that the inorganic film layer can form a water vapor and oxygen intrusion channel, and the effect of blocking water vapor and oxygen becomes worse. Water vapor and oxygen can enter the display area through the inorganic film layer and affect the performance and life of the display panel.

[0050] In the related art, a method of setting an isolation column in the non-display area is adopted to prevent the cracks generated during the hole opening process from extending to the display area through the isolation column, thereby reducing the possibility of water vapor and oxygen invading the display area along the cracks. However, the packaging solution is prone to hole area packaging failure under high temperature and high humidity storage and high temperature and high humidity operation, which reduces the performance of the display panel.

[0051] In order to solve the above technical problems, this application is proposed. In order to better understand this application, Figures 1 to 7 The display panel and the display device according to the embodiments of the present application are described in detail.

[0052] like Figures 1 to 4As shown, a display panel provided by an embodiment of the first aspect of the present application comprises a display area 10a, an opening area 10b and an isolation area 10c, wherein the isolation area 10c is located between the display area 10a and the opening area 10b; the display panel comprises a substrate 1, a dam 2 and an isolation portion 3; the dam 2 is arranged on one side of the substrate 1, and the dam 2 is located in the isolation area 10c; the isolation portion 3 is arranged on the substrate 1 and located in the isolation area 10c, and the isolation portion 3 comprises at least two first isolation columns 31 located on a side of the dam 2 close to the display area 10a, the first isolation columns 31 comprise a first insulating layer 311 and a first metal layer 312 located on a side of the first insulating layer 311 away from the substrate 1; wherein a first isolation groove 310 is formed between two adjacent first isolation columns 31, and the first metal layer 312 of at least one of the two first isolation columns 31 protrudes relative to the first insulating layer 311 toward the first isolation groove 310.

[0053] Optionally, when the display panel is a flexible panel, the provided substrate 1 may be a flexible substrate such as polyimide (PI); when the display panel is a rigid panel, the substrate 1 may be a rigid substrate such as glass or quartz.

[0054] The opening area 10b and the isolation area 10c can both be non-display areas, and the display area 10a is provided with a driving circuit layer 11 and a light-emitting device 15 for displaying image information. Exemplarily, the driving circuit layer 11 may include a transistor, a storage capacitor, and a driving signal line for connecting various devices. The transistor includes a semiconductor, a gate, and a source and drain. The storage capacitor includes a first plate and a second plate. The light-emitting device 15 may include an anode, a light-emitting unit, and a cathode, so as to transmit an electrical signal through the anode and the cathode to drive the light-emitting unit to emit light. The anode can be electrically connected to the drain. It should be noted that other conductive layers and insulating layers may be provided between the anode and the drain, and the anode is electrically connected to the drain through each conductive layer.

[0055] The dam 2 can be used as a retaining wall structure. The dam 2 can be arranged around the opening area 10b. The dam 2 can form interfaces in different directions with the film layer structure below. These interfaces are conducive to blocking the expansion of cracks or changing the expansion direction of cracks when cracks appear in the peripheral area of ​​the opening area 10b, thereby preventing the generated cracks from expanding to the display area 10a, reducing the possibility of water vapor and oxygen entering the display area 10a through the cracks, reducing the influence of water vapor and oxygen on the light-emitting device 15 of the display area 10a, and helping to extend the service life of the display panel.

[0056] In some examples, the cross section of the dam 2 may be trapezoidal, for example, an isosceles trapezoid or a right-angle trapezoid, which is beneficial to improve the structural stability of the dam 2. It should be noted that the cross section of the dam 2 is parallel to the thickness direction of the display panel. In other examples, the dam 2 may also be provided with a second metal layer 212 protruding toward the opening area 10b and the display area 10a.

[0057] The first metal layer 312 of at least one of the two first isolation columns 31 is protruded relative to the first insulating layer 311 toward the first isolation groove 310. It can be understood that only one of the first isolation columns 31 has the first metal layer 312 protruded relative to the first insulating layer 311 toward the first isolation groove 310, and the first isolation column 31 can be any one of the two first isolation columns 31; or, the first metal layer 312 of each of the two first isolation columns 31 protrudes relative to their respective first insulating layers 311 toward the first isolation groove 310, that is, the two first metal layers 312 extend toward each other, which has a better isolation effect.

[0058] Optionally, the isolation portion 3 includes a first isolation column 31 and a second isolation column 32, and the second isolation column 32 is located on the side of the dam 2 facing the opening area 10b. The isolation column located on the side of the dam 2 close to the display area 10a can be defined as an inner isolation column, and the isolation column located on the side of the dam 2 close to the opening area 10b can be defined as an outer isolation column, that is, the first isolation column 31 can be defined as an inner isolation column, and the second isolation column 32 can be defined as an outer isolation column.

[0059] Subsequently, the luminescent material can be vapor-deposited on the entire surface of the substrate 1 and patterned and etched to remove unnecessary parts, and then the luminescent material can be packaged to effectively block the intrusion of water and oxygen.

[0060] In a display panel provided in an embodiment of the present application, a first isolation column 31 located on the dam 2 near the display area 10a can be attached to the encapsulation layer 4, further reducing the possibility of water vapor and oxygen invading the display area 10a from the opening area 10b, and the number of the first isolation columns 31 is greater than one, which can provide a better encapsulation effect. The design of the first isolation groove 310 can extend the intrusion path of water vapor and oxygen, so that the encapsulation layer 4 attached to the first isolation groove 310 has a better barrier effect on water and oxygen. The structure of the first metal layer 312 protruding toward the first isolation groove 310 relative to the first insulating layer 311 can effectively isolate the luminescent material at this position when the luminescent material is evaporated, and the breakage of the luminescent material is more thorough, which is conducive to etching and removing redundant luminescent materials. Water vapor and oxygen are not easy to invade the display area 10a through redundant luminescent materials, thereby improving the reliability of the package, reducing dark spots in the hole area, and improving the yield, thereby improving the performance and life of the display panel.

[0061] Even under high temperature and high humidity storage and high temperature and high humidity operation, the display panel still has a relatively good packaging effect.

[0062] Reference Figure 2 and Figure 3Optionally, by increasing the number of first isolation columns 31, the encapsulation effect of the encapsulation layer 4 in the isolation area 10c can be effectively improved, but the border width of the opening area 10b will be increased accordingly, and the number of second isolation columns 32 can be reduced accordingly to maintain the border of the opening area 10b unchanged, or even reduce the border width of the opening area 10b to achieve a better display effect. Exemplarily, the number of first isolation columns 31 can be two, and the number of second isolation columns 32 can be two or three.

[0063] Reference Figure 4 Optionally, the first isolation column 31 further includes a second insulating layer 313, and the second insulating layer 313 is located on the side of the first metal layer 312 away from the substrate 1; wherein the first metal layer 312 of at least one of the two adjacent first isolation columns 31 is protruded relative to the second insulating layer 313 toward the first isolation groove 310. The second insulating layer 313 can protect, isolate and provide supporting stress for the covered first metal layer 312, so that the protruding portion of the first metal layer 312 relative to the first insulating layer 311 or the second insulating layer 313 can be more stable and have higher structural strength. The encapsulation layer 4 covers the side wall of the first isolation column 31 and the side surface away from the substrate 1. The first metal layer 312 is protruded relative to the second insulating layer 313 toward the first isolation groove 310, which can further extend the invasion path of water vapor and oxygen, and further improve the reliability of the encapsulation.

[0064] The structure in which the first metal layer 312 protrudes toward the first isolation groove 310 relative to the first insulating layer 311 and the second insulating layer 313 can be achieved by locally etching and removing the first insulating layer 311 and the second insulating layer 313 on the upper and lower sides of the first metal layer 312 after the first insulating layer 311, the first metal layer 312 and the second insulating layer 313 are sequentially stacked, thereby resulting in a relatively protruding morphology of the first metal layer 312.

[0065] Optionally, the first metal layers 312 of two adjacent first isolation columns 31 are both protruded toward the same first isolation groove 310 relative to the corresponding first insulation layer 311 or second insulation layer 313. That is, the two first metal layers 312 extend toward each other, which has a better isolation effect.

[0066] Reference Figure 4In some optional embodiments, the first isolation column 31 further includes a base 314, which is located on a side of the first insulating layer 311 close to the substrate 1; the first insulating layer 311 includes a first portion 311a and a second portion 311b, the first portion 311a covers the side surface of the base 314 facing the first isolation groove 310, the second portion 311b covers a portion of the top surface of the base 314 facing away from the substrate 1, a first opening 30a is provided between the second portion 311b and the first portion 311a, and the first metal layer 312 extends from the first opening 30a toward the first isolation groove 310 and covers a side surface of the first portion 311a facing away from the substrate 1. Optionally, the first insulating layer 311 further includes a third portion 311c, which covers the side surface of the base 314 facing away from the first isolation groove 310.

[0067] The first part 311a located below the first metal layer 312 can provide support for the first metal layer 312, thereby improving the structural strength of the protruding portion of the first metal layer 312 relative to the first part 311a, thereby reducing the downward bending or upward warping of the edge of the first metal layer 312, so that the first metal layer 312 can more effectively isolate the light-emitting material.

[0068] The morphology of the first opening 30 a may be similar to that of the first isolation column 31 , and both are disposed around the opening area 10 b , so that in all directions, the first portion 311 a provides support below the first metal layer 312 .

[0069] The first metal layer 312 is connected to the substrate 314 through the first opening 30a and can be used to transmit electrical signals. Compared with the case where the entire surface is set on the first insulating layer 311, the bonding strength between the first metal layer 312 and the substrate 314 is higher, making the relatively protruding part of the first metal layer 312 more secure.

[0070] Optionally, the substrate 314 includes a third metal layer 315, and the first metal layer 312 is connected to the third metal layer 315 via the first opening 30a. Optionally, the material of the first insulating layer 311 includes an organic material. The adhesion effect of metal materials in contact with each other is much greater than that of metals in contact with organic materials. The adhesion area between the first metal layer 312 and the third metal layer 315 is increased by the first opening 30a, so that the protruding portion of the first metal layer 312 relative to the first insulating layer 311 is more secure.

[0071] In the substrate 314 , other metal layers and insulating layers may be provided below the third metal layer 315 , so as to further raise the first isolation column 31 and improve the isolation effect of the first isolation column 31 .

[0072] Reference Figure 5In some optional embodiments, the display panel further includes an encapsulation layer 4, which is located on the side of the light-emitting device 15 away from the substrate 1, and the encapsulation layer 4 extends to the isolation region 10c and covers the inner wall of the first isolation groove 310, wherein the inner wall of the first isolation groove 310 includes a side wall surface and a bottom wall surface. The encapsulation layer 4 can prevent water vapor, oxygen and other media from invading the light-emitting device 15 to protect the light-emitting device 15. The light-emitting device 15 may include an anode, a light-emitting unit and a cathode, so as to transmit an electrical signal through the anode and the cathode to drive the light-emitting unit to emit light. Among them, the encapsulation layer 4 may include a thin film encapsulation (Thin-Film Encapsulation, TFE) layer. Specifically, the encapsulation layer 4 has a multilayer structure, which generally includes at least two inorganic film layers and at least one organic film layer, which are stacked in sequence in a direction away from the substrate 1, and there are inorganic film layers on both sides of the organic film layer. For example, in some embodiments, the encapsulation layer 4 includes a first inorganic layer 41, an organic layer 42 and a second inorganic layer 43 stacked in sequence in a direction away from the substrate 1.

[0073] The encapsulation layer 4 extends to the isolation region 10c and covers the inner wall of the first isolation groove 310, so that effective encapsulation can be formed in the isolation region 10c. The structure of the first isolation groove 310 can effectively improve the reliability of the encapsulation, thereby improving the performance and life of the display panel.

[0074] Optionally, the light-emitting unit may include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer, an emitting layer (EML), a hole blocking layer, an electron injection layer (EIL) and an electron transport layer (ETL).

[0075] Combined with reference Figure 5 and Figure 6 In some optional embodiments, among the plurality of first isolation columns 31 , the first insulating layer 311 or the second insulating layer 313 of the first isolation column 31 close to the dam 2 covers a surface of the first metal layer 312 on one side facing the dam 2 .

[0076] In these embodiments, the first metal layer 312 of the first isolation column 31 near the dam 2 is protruded toward the first isolation groove 310 on the side facing the first isolation groove 310, while the first metal layer 312 on the side facing away from the first isolation groove 310, that is, the side facing the dam 2, may not be protruded relative to the first insulating layer 311 and the second insulating layer 313. Instead, the first insulating layer 311 or the second insulating layer 313 covers the surface of the first metal layer 312 on the side facing the dam 2, so that the coverage of the encapsulation layer 4 on this side can be smoother, so that a thicker thickness can be covered, thereby improving the encapsulation effect.

[0077] Optionally, the orthographic projection of the first metal layer 312 on the substrate 1 has a first edge close to the dam 2 , the orthographic projection of the first insulating layer 311 or the second insulating layer 313 on the substrate 1 has a second edge close to the dam 2 , and the first edge is located on the side of the second edge away from the dam 2 .

[0078] The second edge may refer to an edge of the first insulating layer 311 on the substrate 1, where the projection is close to the dam 2, or may refer to an edge of the second insulating layer 313 on the substrate 1, where the projection is close to the dam 2. In this embodiment, the first edge is at least located on the side of any of the above edges away from the dam 2.

[0079] The first insulating layer 311 and the second insulating layer 313 may both cover part of the side of the first metal layer 312 facing the dam 2, or one of the first insulating layer 311 and the second insulating layer 313 may cover the side of the first metal layer 312 facing the dam 2, or the first insulating layer 311 may cover the side of the first metal layer 312 facing the dam 2, while the second insulating layer 313 may cover the side of the first insulating layer 311 facing the dam 2. Thus, the first insulating layer 311 or the second insulating layer 313 covers the surface of the first metal layer 312 facing the dam 2, so that the encapsulation layer 4 can cover this side more smoothly, so that a thicker thickness can be covered, thereby improving the encapsulation effect.

[0080] In some optional embodiments, a second isolation trench 320 is formed between the dam 2 and the adjacent first isolation column 31 , and the second insulation layer 313 covers the first insulation layer 311 or the first metal layer 312 on a side facing the second isolation trench 320 .

[0081] The second insulating layer 313 covers the first insulating layer 311 and the first metal layer 312 on the side facing the second isolation groove 320. The first insulating layer 311 may cover the side of the first metal layer 312 facing the dam 2, while the second insulating layer 313 covers the side of the first insulating layer 311 facing the dam 2; or the second insulating layer 313 covers both the first metal layer 312 and the first insulating layer 311.

[0082] In these embodiments, the second isolation groove 320 can also extend the intrusion path of water vapor and oxygen, so that the encapsulation layer 4 attached to the second isolation groove 320 has a better barrier effect against water and oxygen. The second insulating layer 313 covers the first insulating layer 311 or the first metal layer 312 on the side facing the second isolation groove 320, so that the coverage of the encapsulation layer 4 on this side can be smoother, so that a thicker thickness can be covered, thereby improving the encapsulation effect.

[0083] Optionally, the dam 2 includes a third insulating layer 211, a second metal layer 212 located on a side of the third insulating layer 211 away from the substrate 1, and the second metal layer 212 is protruded relative to the third insulating layer 211 toward the second isolation groove 320. Optionally, the dam 2 also includes a fourth insulating layer 213, the fourth insulating layer 213 is located on a side of the second metal layer 212 away from the substrate 1, and the second metal layer 212 is protruded relative to the fourth insulating layer 213 toward the second isolation groove 320.

[0084] The film structure of the dam 2 can be similar to the structure of the first isolation column 31, except that, along the direction from the display area 10a to the opening area 10b, the width of the dam 2 is greater than the width of the first isolation column 31, so that the barrier effect of the dam 2 relative to the first isolation column 31 is better. The second metal layer 212 can be set in the same layer and material as the first metal layer 312, and formed in the same preparation process to simplify the preparation process. Similarly, the third insulating layer 211 can also be set in the same layer and material as the first insulating layer 311, and the fourth insulating layer 213 can be set in the same layer and material as the second insulating layer 313. The second metal layer 212 is protruded relative to the third insulating layer 211 toward the second isolation groove 320. Similarly, when the luminescent material is evaporated, the luminescent material can be isolated at this position, so that water vapor and oxygen are not easy to invade the display area 10a through the redundant luminescent material, thereby improving the reliability of the package and further improving the performance and life of the display panel. The fourth insulating layer 213 can also protect, isolate and provide supporting stress for the covered second metal layer 212, so that the protruding portion of the second metal layer 212 relative to the third insulating layer 211 or the fourth insulating layer 213 is more stable and has a higher structural strength. The encapsulation layer 4 covers the sidewalls of the dam 2 and the surface of one side away from the substrate 1. The second metal layer 212 is protruding relative to the fourth insulating layer 213 toward the first isolation groove 310, which can further extend the invasion path of water vapor and oxygen.

[0085] In some optional embodiments, the second metal layer 212 includes a first metal portion 212a and a second metal portion 212b that are spaced apart, the first metal portion 212a protrudes relative to the third insulating layer 211 toward the second isolation groove 320, and the second metal portion 212b protrudes relative to the third insulating layer 211 toward the opening area 10b. The first metal portion 212a can be spaced apart from the second metal portion 212b, and the two are not conductive to each other, and can be used to transmit different circuit signals. In these embodiments, protruding metal portions are provided on both sides of the dam 2, so that the dam 2 can effectively isolate the light-emitting material at the protruding positions of the metal portions on both sides, thereby improving the reliability of the package.

[0086] Combined with reference Figure 2 and Figure 6 In some optional embodiments, the display panel further includes a second isolation column 32 located in the isolation area 10c, the second isolation column 32 is located on the side of the dam 2 facing the opening area 10b, and a third isolation groove 330 is formed between the dam 2 and the adjacent second isolation column 32. Optionally, the second isolation column 32 includes a fifth insulating layer 321 and a fourth metal layer 322 located on the side of the fifth insulating layer 321 away from the substrate, and the fourth metal layer 322 is protruded relative to the fifth insulating layer 321 toward the third isolation groove 330. Optionally, the second isolation column 32 further includes a sixth insulating layer 323, the sixth insulating layer 323 is located on the side of the fourth metal layer 322 away from the substrate, and the fourth metal layer 322 is protruded relative to the sixth insulating layer 323 toward the third isolation groove 330. Optionally, the second isolation column 32 further includes a fifth metal layer 324 , which is located on a side of the fifth insulating layer 321 close to the substrate 1 , and the fifth insulating layer 321 is provided with a second opening 30 b , and the fourth metal layer 322 is connected to the fifth metal layer 324 via the second opening 30 b .

[0087] The film layer structure of the second isolation column 32 can be similar to the structure of the first isolation column 31, so the fourth metal layer 322 can be set in the same layer and material as the first metal layer 312, and formed in the same preparation process to simplify the preparation process. Similarly, the fifth insulating layer 321 can also be set in the same layer and material as the first insulating layer 311, and the sixth insulating layer 323 can be set in the same layer and material as the second insulating layer 313. The fifth metal layer 324 can be set in the same layer and material as the third metal layer 315. The adhesion area between the fourth metal layer 322 and the fifth metal layer 324 is increased by the second opening 30b, so that the protruding portion of the fourth metal layer 322 relative to the fifth insulating layer 321 is more secure.

[0088] like Figure 2 and Figure 3As shown, optionally, the number of the second isolation columns 32 is two or three, and a fourth isolation groove 340 is formed between two adjacent second isolation columns 32. The fourth isolation groove 340 can also extend the intrusion path of water vapor and oxygen, so that the encapsulation layer 4 attached to the fourth isolation groove 340 has a better barrier effect on water and oxygen.

[0089] Reference Figure 7 Optionally, the fourth metal layer 322 of at least one of the two adjacent second isolation columns 32 is protruded relative to the fifth insulating layer 321 toward the fourth isolation groove 340. The fourth metal layer 322 is protruded relative to the fifth insulating layer 321 toward the fourth isolation groove 340, and the luminescent material can also be isolated at this position when the luminescent material is evaporated, so that water vapor and oxygen are not easy to invade the display area 10a through the redundant luminescent material, thereby improving the reliability of the package, and further improving the performance and life of the display panel.

[0090] Optionally, of two adjacent second isolation columns 32, the fifth insulating layer 321 or the sixth insulating layer 323 of the second isolation column 32 away from the dam 2 covers the surface of the fourth metal layer 322 on one side away from the dam 2. The second isolation column 32 away from the dam 2 is located at the outer side of the display area relative to other isolation columns or the dam 2. The arrangement of the encapsulation layer 4 here can further improve the path of water and oxygen intrusion. The side of the second isolation column 32 away from the dam 2 away from the dam 2 does not protrude with the fourth metal layer 322, so that the coverage of the encapsulation layer 4 can be relatively smooth, which is beneficial to increase the coverage thickness of the encapsulation layer 4 at this position and improve the encapsulation effect.

[0091] Optionally, the encapsulation layer 4 may also extend to a side of the second isolation column away from the dam 2 to further improve the encapsulation effect.

[0092] Optionally, among the multiple second isolation columns 32, the outermost second isolation column 32 (i.e., the second isolation column 32 farthest from the dam 2) is closest to the laser cutting boundary of the opening area 10b, and the inorganic film layer thereunder can be partially hollowed out to better block the cracks from extending toward the display area 10a, and a shielding metal layer (BSM) can be provided at the bottom of the hollowed-out groove.

[0093] Reference Figure 5 In some optional embodiments, the display panel also includes a driving circuit layer 11, a seventh insulating layer 12, a first conductive layer 13, an eighth insulating layer 14 and a light-emitting device 15, which are located in the display area 10a and are stacked in sequence in a direction away from the substrate 1, and the first conductive layer 13 electrically connects the driving circuit layer 11 and the light-emitting device 15; wherein the first conductive layer 13 is arranged on the same layer as the first metal layer 312, and the seventh insulating layer 12 is arranged on the same layer as the first insulating layer 311.

[0094] The seventh insulating layer 12 separates the first conductive layer 13 and the driving circuit layer 11. Optionally, the first conductive layer 13 can be electrically connected to the drain of the driving circuit layer 11 through a via hole opened on the seventh insulating layer 12. Optionally, other conductive layers and insulating layers can be provided between the first conductive layer 13 and the driving device, so that the driving signal of the driving circuit layer 11 is transmitted to the light-emitting device 15 through the first conductive layer 13. Exemplarily, the first conductive layer 13 is electrically connected to the drain of the driving circuit layer 11 via other conductive layers. The first conductive layer 13 is electrically connected to the anode of the light-emitting device 15.

[0095] The first conductive layer 13 and the seventh insulating layer 12 are located between the light emitting device 15 and the substrate 1. When preparing the first conductive layer 13, the first metal layer 312, the second metal layer 212, the fourth metal layer 322, etc. located in the isolation region 10c can be prepared simultaneously. When preparing the seventh insulating layer 12, the first insulating layer 311, the third insulating layer 211, the fifth insulating layer 321, etc. located in the isolation region 10c can be prepared simultaneously, thereby simplifying the preparation process and improving efficiency.

[0096] It should be noted that when preparing other conductive layers between the first conductive layer 13 and the driving circuit layer 11 , the third metal layer 315 can be simultaneously prepared in the isolation region 10 c .

[0097] The embodiment of the second aspect of the present application further provides a display device, including the display panel provided by any of the embodiments of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel of any of the embodiments of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any of the embodiments of the first aspect, which will not be described in detail here.

[0098] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0099] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: The display panel comprises a display area, an opening area and an isolation area, wherein the isolation area is located between the display area and the opening area; the display panel comprises: substrate; A dam is disposed on one side of the substrate, wherein the dam is located in the isolation region; an isolation portion, disposed on the substrate and located in the isolation region, the isolation portion comprising at least two first isolation columns located on a side of the dam close to the display region, the first isolation columns comprising a first insulating layer and a first metal layer located on a side of the first insulating layer away from the substrate; A first isolation groove is formed between two adjacent first isolation columns, and the first metal layer of at least one of the two first isolation columns is protruded relative to the first insulating layer toward the first isolation groove.

2. The display panel according to claim 1, characterized in that: The first isolation column further includes a second insulating layer, and the second insulating layer is located on a side of the first metal layer away from the substrate; The first metal layer of at least one of two adjacent first isolation columns is protruded relative to the second insulation layer toward the first isolation groove; Preferably, the first metal layers of two adjacent first isolation columns are both protruded relative to the first insulation layer or the second insulation layer toward the same first isolation groove.

3. The display panel according to claim 2, characterized in that: Among the plurality of first isolation columns, the first insulating layer or the second insulating layer of the first isolation column close to the dam covers a surface of the first metal layer on one side facing the dam; Preferably, the first metal layer has a first edge close to the dam in its orthographic projection on the substrate, the first insulating layer or the second insulating layer has a second edge close to the dam in its orthographic projection on the substrate, and the first edge is located on a side of the second edge away from the dam.

4. The display panel according to claim 2, characterized in that: A second isolation groove is formed between the dam and the adjacent first isolation column, and the second insulation layer covers the first insulation layer or the first metal layer on a side facing the second isolation groove; Preferably, the dam comprises a third insulating layer, a second metal layer located on a side of the third insulating layer away from the substrate, and the second metal layer is protruded relative to the third insulating layer toward the second isolation groove; Preferably, the dam further comprises a fourth insulating layer, the fourth insulating layer is located on a side of the second metal layer away from the substrate, and the second metal layer is protruded relative to the fourth insulating layer toward the second isolation groove; Preferably, the second metal layer comprises a first metal portion and a second metal portion which are spaced apart from each other, the first metal portion is protruded relative to the third insulating layer toward the second isolation groove, and the second metal portion is protruded relative to the third insulating layer toward the opening area; Preferably, the second metal layer is disposed on the same layer as the first metal layer; The third insulating layer is arranged on the same layer as the first insulating layer; The fourth insulating layer is disposed on the same layer as the second insulating layer.

5. The display panel according to claim 1, characterized in that: The first isolation column further includes a base, and the base is located on a side of the first insulation layer close to the substrate; the first insulation layer includes a first portion and a second portion, the first portion covers a side surface of the base facing the first isolation groove, and the second portion covers a portion of a top surface of the base facing away from the substrate, a first opening is provided between the second portion and the first portion, and the first metal layer extends from the first opening toward the first isolation groove and covers a side surface of the first portion facing away from the substrate; Preferably, the first insulating layer further includes a third portion, and the third portion covers a side surface of the substrate facing away from the first isolation trench; Preferably, the substrate includes a third metal layer, and the first metal layer is connected to the third metal layer via the first opening.

6. The display panel according to claim 1, characterized in that: The display panel further comprises a second isolation column located in the isolation area, the second isolation column is located on a side of the dam facing the opening area, and a third isolation groove is formed between the dam and an adjacent second isolation column; Preferably, the second isolation column comprises a fifth insulation layer and a fourth metal layer located on a side of the fifth insulation layer away from the substrate, and the fourth metal layer is arranged to protrude relative to the fifth insulation layer toward the third isolation groove; Preferably, the second isolation column further comprises a sixth insulation layer, the sixth insulation layer is located on a side of the fourth metal layer away from the substrate, and the fourth metal layer is protruded relative to the sixth insulation layer toward the third isolation groove; Preferably, the second isolation column further includes a fifth metal layer, the fifth metal layer is located on a side of the fifth insulating layer close to the substrate, the fifth insulating layer is provided with a second opening, and the fourth metal layer is connected to the fifth metal layer via the second opening; Preferably, the fourth metal layer is provided at the same layer as the first metal layer; The fifth insulating layer is disposed on the same layer as the first insulating layer.

7. The display panel according to claim 6, characterized in that: The number of the second isolation columns is two or three, and a fourth isolation groove is formed between two adjacent second isolation columns; Preferably, the fourth metal layer of at least one of two adjacent second isolation columns is protruded relative to the fifth insulating layer toward the fourth isolation groove; Preferably, in two adjacent second isolation columns, the fifth insulating layer or the sixth insulating layer of the second isolation column far away from the dam covers a surface of the fourth metal layer on one side away from the dam.

8. The display panel according to any one of claims 1 to 7, characterized in that: The display panel further comprises a driving circuit layer, a seventh insulating layer, a first conductive layer, an eighth insulating layer and a light emitting device which are located in the display area and are sequentially stacked in a direction away from the substrate, wherein the first conductive layer electrically connects the driving circuit layer and the light emitting device; The first conductive layer is disposed on the same layer as the first metal layer, and the seventh insulating layer is disposed on the same layer as the first insulating layer.

9. The display panel according to claim 8, characterized in that: The display panel further includes an encapsulation layer, wherein the encapsulation layer is located on a side of the light emitting device away from the substrate, and the encapsulation layer extends to the isolation region and covers an inner wall of the first isolation groove.

10. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 9.

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