Display panel and display device

Abstract

The present application relates to the technical field of optical display, and particularly relates to a display panel and a display device. The first via is electrically connected with the first connecting line, and the electrical signal transmission is performed between the metal layer and the first connecting line. Part of the first connecting line is overlapped with the pixel definition layer, so that part of the first connecting line is covered by the pixel definition layer. Part of the metal layer passing through the first via is surrounded by the pixel definition layer. Thus, part of the first connecting line, the metal layer and the connecting position of the first connecting line can be protected by the pixel definition layer. When the display panel is stretched, the risk of disconnection between the metal layer and the first connecting line can be reduced, so that the effectiveness and stability of the signal transmission of the connecting line are improved.

Description

Technical Field

[0001] This invention relates to the field of optical display technology, and more specifically to a display panel and display device. Background Technology

[0002] Stretchable display technology enables screens to be stretched in all directions to change shape and adapt to surfaces of any shape. Stretchable screens can be flexibly applied in various fields, such as consumer electronics, public displays, medical, biological, wearables, gaming, fashion, and automotive applications. In existing stretchable display technologies, signal transmission in the extended area is often achieved by connecting adjacent metal layers of an isolation structure with metal connecting lines. Therefore, ensuring effective and stable signal transmission through these connecting lines is a crucial technical problem that needs to be solved. Summary of the Invention

[0003] The purpose of this application is to provide a display panel and a display device.

[0004] This application provides a display panel, comprising: a driving substrate forming a pixel region and an extension region; a pixel definition layer disposed on the driving substrate, the pixel definition layer protruding from the substrate to form a pixel opening; a sub-pixel disposed in the pixel opening, the sub-pixel including an anode, a light-emitting layer, and a cathode stacked from near the driving substrate to away from the driving substrate; an isolation structure disposed on the pixel definition layer and located on the periphery of the pixel opening to separate the pixel region and the extension region, the isolation structure including a metal layer and an insulating layer stacked from near the pixel definition layer to away from the pixel definition layer; a first connecting line disposed on the driving substrate, the first connecting line extending from the extension region to the pixel region, and the first connecting line being insulated from the anode, the first connecting line and the orthographic projection of the pixel definition layer on the driving substrate at least partially overlapping to form a first overlapping region, the pixel definition layer forming a first via in the first overlapping region, the metal layer passing through the first via and electrically connected to the first connecting line.

[0005] In one exemplary embodiment of this application, a portion of the anode extends from the pixel region to the extension region. On the side of the isolation structure facing the extension region, the orthographic projections of the anode and the pixel definition layer on the driving substrate at least partially overlap to form a second overlapping region. The pixel definition layer forms a second via in the second overlapping region. The display panel further includes a second connecting line, which is disposed on the side of the pixel definition layer away from the driving substrate. The second connecting line is insulated from the metal layer and passes through the second via to be electrically connected to the anode.

[0006] In one exemplary embodiment of this application, the display panel further includes a third connecting line corresponding to the first connecting line. The third connecting line extends from the extension area to the pixel area and is electrically connected to the metal layer. The third connecting line and the metal layer are formed by deposition, and the third connecting line and the metal layer are an integral structure. In this embodiment, a portion of the third connecting line is reused as the metal layer; or, a portion of the metal layer is reused as the third connecting line.

[0007] In an exemplary embodiment of this application, the first connecting line and the pixel definition layer are superimposed on the driving substrate to form the first overlapping region; in the pixel region, the pixel definition layer forms the first via, and the metal layer passes through the first via and is electrically connected to the first connecting line; the pixel definition layer is located between the third connecting line and the first connecting line to insulate the third connecting line from the first connecting line.

[0008] In one exemplary embodiment of this application, the first connecting line and the orthographic projection of the pixel definition layer on the driving substrate form the first overlapping region, and in the extended region, the pixel definition layer forms the first via; the third connecting line passes through the first via and is electrically connected to the first connecting line.

[0009] In one exemplary embodiment of this application, the isolation structure includes a main body and a first reinforcing portion extending away from the pixel opening. The width of the first reinforcing portion is greater than the width of the main body in the direction from the pixel opening to the extension area, and the first connecting line connects the first reinforcing portion.

[0010] In one exemplary embodiment of this application, the isolation structure includes a main body and a second reinforcing portion extending away from the pixel opening. The width of the second reinforcing portion is greater than the width of the main body in the direction from the pixel opening to the extension area, and the second connecting line connects the second reinforcing portion.

[0011] In one exemplary embodiment of this application, the width of the insulating layer is greater than the width of the metal layer, the metal layer gradually decreases in size from the direction close to the pixel definition layer to the direction away from the pixel definition layer, and the insulating layer gradually decreases in size from the direction close to the metal layer to the direction away from the metal layer.

[0012] In one exemplary embodiment of this application, the isolation structure faces the side of the extension region, and the side of the insulating layer and the side of the metal layer are on the same plane; the isolation structure faces the side of the pixel opening, and the insulating layer extends beyond the metal layer along the length direction of the driving substrate.

[0013] This application also provides a display device, including the aforementioned display panel.

[0014] This application discloses a display panel and display device, which have the following advantages: a pixel area formed on a driving substrate is used to set pixel units, and an extension area is used to provide compensation when the display panel is stretched. The pixel unit includes a pixel definition layer, sub-pixels, and an isolation structure. The isolation structure is used to isolate adjacent sub-pixels for independent encapsulation, separating the anode, light-emitting layer, and cathode of the sub-pixel from the extension area. The light-emitting layer emits light under the drive of the anode and cathode. The isolation structure includes a metal layer and an insulating layer. The display panel also includes a first connecting line disposed on the driving substrate. The first connecting line is insulated from the anode to reduce signal interference between the first connecting line and the anode. The pixel definition layer forms a first via in the first overlapping area. The metal layer passes through the first via and is electrically connected to the first connecting line, thereby transmitting the cathode signal to the first connecting line through the metal layer. With this design, the first connecting line and the anode are disposed on the same layer and can be formed using the same process and materials, thereby reducing the differentiation of the first connecting line and reducing the process steps. Furthermore, the metal layer is electrically connected to the first connecting line through the first via, and electrical signal transmission occurs between the metal layer and the first connecting line. In this configuration, a portion of the first connecting line overlaps with the pixel definition layer, thereby covering a portion of the first connecting line. The portion of the metal layer passing through the first via is surrounded and wrapped by the pixel definition layer. Thus, the pixel definition layer protects a portion of the first connecting line, the metal layer, and the connection points of the first connecting line. When the display panel is stretched, the risk of the metal layer and the first connecting line breaking is reduced, thereby improving the effectiveness and stability of signal transmission through the connecting lines.

[0015] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 This is a first structural schematic diagram of a display panel according to an embodiment of the present invention;

[0019] Figure 2yes Figure 1 Schematic diagram of the cross section at point AA;

[0020] Figure 3 This is a schematic diagram of the second structure of a display panel according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 A cross-sectional view of section BB, in which the isolation structure forms shielding sections on both sides;

[0022] Figure 5 This is a cross-sectional schematic diagram of a display panel having a first connecting line and a second connecting line in an embodiment of the present invention, wherein the first via is disposed in the pixel area;

[0023] Figure 6 This is a cross-sectional schematic diagram of a display panel having a first connecting line and a second connecting line in an embodiment of the present invention, wherein the first via is provided in the extension area;

[0024] Figure 7 yes Figure 3 A cross-sectional view of the middle BB section, in which the isolation structure forms a shading part on the side facing the pixel opening.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Driving substrate; 101. Flexible substrate; 102. Driving circuit; 103. Pad; 11. Pixel area; 12. Extension area; 20. Pixel definition layer; 21. Pixel opening; 22. First via; 23. Second via; 30. Subpixel; 31. Anode; 32. Light-emitting layer; 33. Cathode; 40. Isolation structure; 401. Main body; 402. First reinforcing part; 403. Second reinforcing part; 41. Metal layer; 42. Insulating layer; 50. First connecting line; 60. Second connecting line; 70. Third connecting line; S1. First overlapping area; S2. Second overlapping area. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0028] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0030] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0031] Stretchable display technology enables screens to be stretched in all directions to change shape and adapt to surfaces of any shape. Stretchable screens can be flexibly applied in various fields, such as consumer electronics, public displays, medical, biological, wearables, gaming, fashion, and automotive applications. In existing stretchable display technologies, signal transmission in the extended area is often achieved by connecting adjacent metal layers of an isolation structure with metal connecting lines. Therefore, ensuring effective and stable signal transmission through these connecting lines is a crucial technical problem that needs to be solved.

[0032] To address the aforementioned technical problems, this application provides a display panel, as shown in the reference. Figure 1 and Figure 2As shown, the system includes a driving substrate 10, a pixel definition layer 20, sub-pixels 30, an isolation structure 40, and a first connecting line 50. The driving substrate 10 forms a pixel region 11 and an extension region 12; the pixel definition layer 20 is disposed on the driving substrate 10, protruding from the substrate to form a pixel opening 21; the sub-pixel 30 is disposed in the pixel opening 21, and the sub-pixel 30 includes an anode 31, a light-emitting layer 32, and a cathode 33 stacked from near the driving substrate 10 to away from the driving substrate 10; the isolation structure 40 is disposed on the pixel definition layer 20 and located on the periphery of the pixel opening 21 to separate the pixel region 11 and the extension region 12. The isolation structure 40 includes a pixel region 11 and an extension region 12 stacked from near the pixel definition layer 10 to away from the driving substrate 10. A metal layer 41 and an insulating layer 42 are stacked away from the pixel definition layer 20. A first connecting line 50 is disposed on the driving substrate 10. The first connecting line 50 extends from the extension area 12 to the pixel area 11 and is insulated from the anode 31. The first connecting line 50 and the orthographic projection of the pixel definition layer 20 on the driving substrate 10 at least partially overlap to form a first overlapping area S1. The pixel definition layer 20 forms a first via 22 in the first overlapping area S1. The metal layer 41 passes through the first via 22 and is electrically connected to the first connecting line 50.

[0033] Reference Figure 1 and Figure 2As shown, the pixel area 11 formed on the driving substrate 10 is used to set pixel units, and the extension area 12 is used to provide compensation when the display panel is stretched. The pixel unit includes a pixel definition layer 20, a sub-pixel 30 and an isolation structure 40. The isolation structure 40 is used to isolate adjacent sub-pixels 30 to achieve independent encapsulation, and to isolate the anode 31, light-emitting layer 32 and cathode 33 of the sub-pixel 30 from the extension area 12. The light-emitting layer 32 emits light under the drive of the anode 31 and cathode 33. The isolation structure 40 includes a metal layer 41 and an insulating layer 42. The display panel also includes a first connection line 50 disposed on the driving substrate 10. The first connection line 50 is insulated from the anode 31 to reduce signal interference between the first connection line 50 and the anode 31. The pixel definition layer 20 forms a first via 22 in the first overlapping area S1. The metal layer 41 passes through the first via 22 and is electrically connected to the first connection line 50, so that the cathode 33 signal is transmitted to the first connection line 50 through the metal layer 41. With this design, the first connection line 50 and the anode 31 are disposed on the same layer and can be formed by the same process and materials, thereby reducing the differentiation of the first connection line 50 and reducing the process steps. The metal layer 41 is electrically connected to the first connection line 50 through the first via 22, and electrical signal transmission occurs between the metal layer 41 and the first connection line 50. In this configuration, a portion of the first connecting line 50 overlaps with the pixel definition layer 20, so that a portion of the first connecting line 50 is covered by the pixel definition layer 20; a portion of the metal layer 41 passing through the first via 22 is surrounded and wrapped by the pixel definition layer 20. Thus, the pixel definition layer 20 protects a portion of the first connecting line 50, the metal layer 41, and the connection points of the first connecting line 50. When the display panel is stretched, the risk of the metal layer 41 and the first connecting line 50 breaking is reduced, thereby improving the effectiveness and stability of signal transmission through the connecting lines.

[0034] In some embodiments, refer to Figure 1 and Figure 2 As shown, pixel areas 11 are spaced apart, and extended areas 12 are spaced apart; in the same direction, pixel areas 11 and extended areas 12 are staggered. During stretching, the staggered extended areas 12 deform, becoming longer in the stretching direction, while the area of ​​the pixel areas 11 remains unchanged, thus achieving the stretching of the display screen. By using multiple extended areas 12, the display screen can be stretched to a larger area, thereby increasing the display area.

[0035] In some embodiments, refer to Figure 2As shown, the driving substrate 10 includes a flexible substrate 101 and a driving circuit 102. The flexible substrate 101 can be a glass flexible substrate 101 or an organic flexible substrate 101. The driving circuit 102 can be a thin film transistor (TFT) circuit layer, which is used to drive the light-emitting layer 32 of the OLED. Specifically, the TFT circuit layer includes multiple arrayed driving circuit 102 units, each of which can include a TFT device and a capacitor. Each driving circuit 102 unit corresponds to an anode 31 and an organic light-emitting layer 32. The TFT device is of the low-temperature polysilicon (LTPS) type or the metal-oxide semiconductor (MOS) type, such as indium gallium zinc oxide (IGZO) MOS.

[0036] In some embodiments, refer to Figure 2 As shown, the display panel also includes a pad 103, which is used to connect the drive circuit 102 and the anode 31 for transmitting electrical signals.

[0037] In some embodiments, the pixel definition layer 20 may be made of an organic material, an organic material with an inorganic coating, or an inorganic material. The organic material of the pixel definition layer 20 includes, but is not limited to, polyimide. The inorganic material of the pixel definition layer 20 includes, but is not limited to, silicon oxide (SiO), silicon nitride (SiN), silicon oxynitride (SiNO), magnesium fluoride (MgF), or combinations thereof.

[0038] In some embodiments, refer to Figure 2 As shown, the isolation structure 40 includes a main body 401 and a first reinforcing portion 402 extending away from the pixel opening 21. The width of the first reinforcing portion 402 in the direction from the pixel opening 21 to the extension area 12 is greater than the width of the main body 401. The first connecting line 50 connects to the first reinforcing portion 402. Forming the first reinforcing portion 402 on the isolation structure 40 can increase the connection strength between the first connecting line 50 and the isolation structure 40, reduce the risk of the first connecting line 50 detaching from the isolation structure 40 due to stretching of the display panel, and thus increase the connection stability between the first connecting line 50 and the isolation structure 40.

[0039] In some embodiments, refer to Figure 2As shown, the first connecting line 50 and the anode 31 are disposed on the same layer on the driving substrate 10. The first connecting line 50 and the anode 31 can be formed by deposition of the same material. During the deposition process, the anode 31 and the first connecting line 50 are kept apart to keep them insulated. When the pixel definition layer 20 is formed in the subsequent process, the pixel definition layer 20 is formed at the gap between the two.

[0040] In some embodiments, refer to Figure 2 As shown, orthographic projection refers to the projection produced when parallel projection lines are perpendicular to the projection plane. The orthographic projections of the first connecting line 50 and the pixel definition layer 20 on the driving substrate 10 at least partially overlap to form a first overlapping region S1, that is, the first connecting line 50 and the pixel definition layer 20 at least partially overlap on the driving substrate 10 along the vertical direction, so that at least part of the pixel definition layer 20 covers the first connecting line 50.

[0041] In some embodiments, the first connecting line 50 and the pixel definition layer 20 may partially overlap, that is, the pixel definition layer 20 is smaller than the first connecting line 50 in the length direction of the driving substrate 10, and the pixel definition layer 20 and the first connecting line 50 are interlaced and overlapped; the first connecting line 50 and the pixel definition layer 20 may completely overlap (hereinafter referred to as overlapping), that is, the length of the pixel definition layer 20 is greater than the first connecting line 50 in the length direction of the driving substrate 10, and the pixel definition layer 20 completely covers the first connecting line 50.

[0042] In some embodiments, the first via 22 can be formed by etching on the pixel definition layer 20, and the aperture of the first via 22 gradually decreases from the direction away from the substrate to the direction closer to the substrate. The formation of the first via 22 is to provide space for downward deposition when depositing the metal layer 41, so that the metal layer 41 is in contact with the anode 31, so that the metal layer 41 is electrically connected to the first connection line 50.

[0043] In some embodiments, refer to Figure 3 and Figure 4As shown, a portion of the anode 31 extends from the pixel region 11 to the extension region 12. On the side of the isolation structure 40 facing the extension region 12, the orthographic projections of the anode 31 and the pixel definition layer 20 on the driving substrate 10 at least partially overlap to form a second overlapping region S2. The pixel definition layer 20 forms a second via 23 in the second overlapping region S2. The display panel also includes a second connecting line 60, which is located on the side of the pixel definition layer 20 away from the driving substrate 10 and is insulated from the metal layer 41. The second connecting line 60 passes through the second via 23 and is electrically connected to the anode 31. Thus, the portion of the anode 31 extends from the pixel region 11 to the extension region 12 to make the portion of the anode 31 wider than the other portions of the anode 31. The orthographic projections of the anode 31 and the pixel definition layer 20 on the driving substrate 10 at least partially overlap, that is, the anode 31 and the pixel definition layer 20 at least partially overlap on the driving substrate 10 along the vertical direction. The second connecting line 60 is electrically connected to the anode 31 via the second via 23, and electrical signals are transmitted between the anode 31 and the second connecting line 60. The first connecting line 50 can serve as a backup signal line to be electrically connected to other components of the display panel, thereby enabling signal transmission between the anode 31 and other components, which may be the touch layer.

[0044] In some embodiments, refer to Figure 3 As shown, the isolation structure 40 includes a main body 401 and a second reinforcing portion 403 extending away from the pixel opening 21. The width of the second reinforcing portion 403 in the direction from the pixel opening 21 to the extension area 12 is greater than the width of the main body 401. The second connecting line 60 connects to the second reinforcing portion 403. Forming the second reinforcing portion 403 on the isolation structure 40 can increase the connection strength between the second connecting line 60 and the isolation structure 40, reduce the risk of the second connecting line 60 detaching from the isolation structure 40 due to stretching of the display panel, and thus increase the connection stability between the second connecting line 60 and the isolation structure 40.

[0045] In some embodiments, refer to Figure 5 and Figure 6 As shown, the display panel also includes a third connecting line 70 corresponding to the first connecting line 50. The third connecting line 70 extends from the extension area 12 to the pixel area 11 and is electrically connected to the metal layer 41. The third connecting line 70 and the metal layer 41 are formed by deposition, and the third connecting line 70 and the metal layer 41 are an integral structure. Specifically, a portion of the third connecting line 70 is reused as the metal layer 41; or, a portion of the metal layer 41 is reused as the third connecting line 70. The third connecting line 70 and the first connecting line 50 transmit the same cathode 33 signal. The third connecting line 70 can be on the same vertical plane as the first connecting line 50 to be electrically connected to the metal layer 41 simultaneously. Furthermore, the third connecting line 70 and the metal layer 41 can be deposited simultaneously from the same material to save on process steps.

[0046] In some embodiments, refer to Figure 5 and Figure 6 As shown, the first connecting line 50 and the pixel definition layer 20 are projected onto the driving substrate 10 to form a first overlapping region S1. The third connecting line 70 is separated from the first connecting line 50 by the pixel definition layer 20, so that the third connecting line 70 is insulated from the first connecting line 50. In the pixel region 11 and / or the extension region 12, the pixel definition layer 20 can form a first via 22. The metal layer 41 or the third connecting line 70 passes through the first via 22 and is electrically connected to the first connecting line 50. Since the metal layer 41 surrounds the periphery of the pixel opening 21, the first connecting line 50, the second connecting line 60 and the third connecting line 70 transmit electrical signals of the adjacent metal layer 41. The first connecting line 50, the second connecting line 60 and the third connecting line 70 need to be stretched. Therefore, the size of the first connecting line 50, the second connecting line 60 and the third connecting line 70 is smaller than that of the metal layer 41. The pixel definition layer 20 completely overlaps with the first connecting line 50 so that the pixel definition layer 20 covers the extension area 12, which can protect the first connecting line 50, the second connecting line 60, and the third connecting line 70 and absorb the stress when the first connecting line 50, the second connecting line 60, and the third connecting line 70 are stretched. Therefore, by setting the first via 22 in the pixel area 11 and the extension area 12, the metal layer 41 or the third connecting line 70 can be electrically connected to the first connecting line 50 via a jumper.

[0047] In some embodiments, refer to Figure 5 As shown, when the first via 22 is disposed in the pixel definition layer 20 of the pixel area 11, the metal layer 41 passes through the first via 22 and is electrically connected to the first connecting line 50. The pixel definition layer 20 is located between the third connecting line 70 and the first connecting line 50, thus isolating the third connecting line 70 from the first connecting line 50. Therefore, the electrical signal of the metal layer 41 is transmitted separately by the first connecting line 50 and the third connecting line 70 to the metal layer 41 of the adjacent isolation structure 40. This design increases the signal transmission area, reduces the voltage drop of the display panel, and improves display quality.

[0048] In another embodiment, reference Figure 6 As shown, when the first via 22 is placed in the pixel definition layer 20 of the extension area 12, the third connection passes through the first via 22 and is electrically connected to the first connection line 50. The pixel definition layer 20 is located between the third connection line 70 and the first connection line 50 to insulate the third connection line 70 from the first connection line 50. Therefore, the electrical signal of the metal layer 41 is first transmitted to the third connection line 70, and after the jumper, it is simultaneously transmitted by both the first connection line 50 and the third connection line 70. This design also increases the signal transmission area, thereby reducing the voltage drop of the display panel and improving display quality.

[0049] In some embodiments, refer to Figure 4As shown, the width of the insulating layer 42 is greater than the width of the metal layer 41. The metal layer 41 gradually decreases in size from the direction near the pixel definition layer 20 to the direction away from the pixel definition layer 20, and the insulating layer 42 gradually decreases in size from the direction near the metal layer 41 to the direction away from the metal layer 41. Blocking portions are formed on both sides of the metal layer 41 near the pixel opening 21 and the extension region 12, thereby enabling the evaporation source to be deposited at a certain evaporation angle during evaporation, forming different layer structures. The specific layer structures include a light-emitting layer 32 and a cathode 33.

[0050] In another embodiment, reference Figure 7 As shown, the isolation structure 40 faces the extension region 12, and the side of the insulating layer 42 and the side of the metal layer 41 are on the same plane; the isolation structure 40 faces the pixel opening 21, and the insulating layer 42 extends beyond the metal layer 41 along the length of the driving substrate 10. A shielding portion is formed on the side of the metal layer 41 near the pixel opening 21, so that the evaporation source can be evaporated at a certain evaporation angle during evaporation to form different layer structures. The specific layer structures include the light-emitting layer 32 and the cathode 33.

[0051] In some embodiments, a metal material layer is first deposited on the pixel definition layer 20, extending to the extension region 12. After etching the metal material layer, a metal layer 41 and a second connection line 60 are formed. When shielding portions are formed on both sides of the metal layer 41 near the pixel opening 21 and the extension region 12, anisotropic etching can be used to etch the metal layer 41. Simultaneously, a metal layer 41 with shielding portions and an insulating layer 42 are formed on both sides. When a shielding portion is formed on the side of the metal layer 41 near the extension region 12, anisotropic etching is used on the side near the pixel opening 21. Anisotropic etching, dry etching, or wet etching can be used on the side near the extension region 12.

[0052] This application also provides a display device, including the aforementioned display panel. A metal layer 41 is electrically connected to a first connecting line 50 via a first via 22, and electrical signals are transmitted between the metal layer 41 and the first connecting line 50. A pixel definition layer 20 protects portions of the first connecting line 50, the metal layer 41, and the connection points of the first connecting line 50. When the display panel is stretched, the risk of the metal layer 41 and the first connecting line 50 breaking is reduced, thereby improving the effectiveness and stability of the signal transmission. A second connecting line 60 is electrically connected to an anode 31 via a second via 23, and electrical signals are transmitted between the anode 31 and the second connecting line 60. The first connecting line 50 can serve as a backup signal line for electrical connection to other components of the display panel, thereby enabling signal transmission between the anode 31 and other components.

[0053] In this application, unless otherwise expressly specified and limited, the terms "set up (provided)" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In the description of this specification, references to terms such as "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment is included in at least one embodiment of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display panel, characterized in that, include: A driving substrate, wherein the driving substrate forms a pixel region and an extension region; A pixel definition layer is disposed on the driving substrate, and the pixel definition layer protrudes from the substrate to form a pixel opening; A sub-pixel is disposed at the pixel opening. The sub-pixel includes an anode, a light-emitting layer, and a cathode stacked from near the driving substrate to away from the driving substrate. A portion of the anode extends from the pixel region to the extension region. On the side of the isolation structure facing the extension region, the orthographic projections of the anode and the pixel definition layer on the driving substrate at least partially overlap to form a second overlapping region. The pixel definition layer forms a second via in the second overlapping region. An isolation structure is provided on the pixel definition layer and located on the periphery of the pixel opening to isolate the pixel area and the extension area. The isolation structure includes a metal layer and an insulating layer stacked from near the pixel definition layer to away from the pixel definition layer. The metal layer is electrically connected to the cathode. A first connecting line is disposed on the driving substrate. The first connecting line extends from the extension area to the pixel area and is insulated from the anode. The first connecting line and the orthographic projection of the pixel definition layer on the driving substrate at least partially overlap to form a first overlapping area. The pixel definition layer forms a first via in the first overlapping area. The metal layer passes through the first via and is electrically connected to the first connecting line. The second connecting line is located on the side of the pixel definition layer opposite to the driving substrate, and is insulated from the metal layer. The second connecting line passes through the second via and is electrically connected to the anode.

2. The display panel according to claim 1, characterized in that, The display panel further includes a third connection line corresponding to the first connection line. The third connection line extends from the extension area to the pixel area and is electrically connected to the metal layer. The third connection line and the metal layer are formed by deposition, and the third connection line and the metal layer are an integral structure. In this embodiment, a portion of the third connection line is reused as a metal layer; or, a portion of the metal layer is reused as a third connection line.

3. The display panel according to claim 2, characterized in that, The first connecting line and the pixel definition layer are superimposed on the driving substrate to form the first overlapping area; in the pixel area, the pixel definition layer forms the first via, and the metal layer passes through the first via and is electrically connected to the first connecting line; the pixel definition layer is between the third connecting line and the first connecting line to insulate the third connecting line from the first connecting line.

4. The display panel according to claim 2, characterized in that, The first connecting line and the pixel definition layer are superimposed on the driving substrate to form the first overlapping area. In the extended area, the pixel definition layer forms the first via. The third connecting line passes through the first via and is electrically connected to the first connecting line.

5. The display panel according to claim 1, characterized in that, The isolation structure includes a main body and a first reinforcing portion extending away from the pixel opening. The width of the first reinforcing portion is greater than the width of the main body in the direction from the pixel opening to the extension area. The first connecting line connects the first reinforcing portion.

6. The display panel according to claim 1, characterized in that, The isolation structure includes a main body and a second reinforcing portion extending away from the pixel opening. The width of the second reinforcing portion is greater than the width of the main body in the direction from the pixel opening to the extension area. The second connecting line connects the second reinforcing portion.

7. The display panel according to claim 1, characterized in that, The width of the insulating layer is greater than the width of the metal layer. The metal layer gradually decreases in size from the direction close to the pixel definition layer to the direction away from the pixel definition layer. The width of the insulating layer gradually decreases in size from the direction close to the metal layer to the direction away from the metal layer.

8. The display panel according to claim 1, characterized in that, The isolation structure faces the side of the extension area, and the side of the insulating layer and the side of the metal layer are on the same plane; the isolation structure faces the side of the pixel opening, and the insulating layer extends beyond the metal layer along the length direction of the driving substrate.

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

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