Display panel and display device

Abstract

The invention relates to the technical field of optical display, in particular to a display panel and a display device. And the jumper wire is electrically connected with the first connecting wire through the first via hole, and electric signal transmission is carried out between the metal layer and the first connecting wire. Wherein a part of the first connecting lines are overlapped with the pixel definition layer, so that a part of the first connecting lines are covered by the pixel definition layer; the part, penetrating through the first via hole, of the metal layer is surrounded and wrapped by a pixel definition layer; therefore, part of the first connecting line and the joint of the metal layer and the first connecting line can be protected through the pixel definition layer. When the display panel is stretched, the risk that the metal layer and the first connecting line are disconnected can be reduced, and therefore the effectiveness and stability of signal transmission of the connecting line are improved.

Description

Technical Field

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

[0002] Stretchable display technology enables the display screen to be stretched in all directions to change its shape, and can also adapt to surfaces of any shape. Stretchable screens can be flexibly applied in various fields, such as consumer electronics, public display, medical, biological, wearable, gaming, fashion, and automotive scenarios. In existing stretchable display technologies, the design of signal transmission in the stretching area is mostly to connect the metal layers of adjacent isolation structures through metal connecting wires. Therefore, how to make the connecting wires perform effective and stable signal transmission is a technical problem that needs to be solved urgently. Summary of the invention

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

[0004] The present application provides a display panel, comprising: a driving substrate, the driving substrate forming a pixel area and an extension area; a pixel definition layer, the pixel definition layer is arranged on the driving substrate, the pixel definition layer protrudes from the substrate to form a pixel opening; a sub-pixel, the sub-pixel is arranged at the pixel opening, the sub-pixel comprises an anode, a light-emitting layer and a cathode stacked from close to the driving substrate to away from the driving substrate; an isolation structure, the isolation structure is arranged on the pixel definition layer and is located on the periphery of the pixel opening to separate the pixel area and the extension area, the isolation structure comprises a metal layer and an insulating layer stacked from close to the pixel definition layer to away from the pixel definition layer; a first connecting line, the first connecting line is arranged on the driving substrate, the first connecting line extends from the extension area to the pixel area, and the first connecting line 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 hole in the first overlapping area, and the metal layer is electrically connected to the first connecting line through the first via hole.

[0005] In an exemplary embodiment of the present application, part of the anode extends from the pixel area to the extension area, and on the side of the isolation structure facing the extension area, the positive projections of the anode and the pixel definition layer on the driving substrate at least partially overlap to form a second overlapping area, and the pixel definition layer forms a second via hole in the second overlapping area; the display panel also includes a second connecting line, which is arranged on a side of the pixel definition layer away from the driving substrate, and the second connecting line is insulated from the metal layer, and the second connecting line passes through the second via hole to be electrically connected to the anode.

[0006] In an exemplary embodiment of the present application, the display panel also includes a third connecting line arranged 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 integrated structure; wherein part of the third connecting line is reused as the metal layer; or, part of the metal layer is reused as the third connecting line.

[0007] In an exemplary embodiment of the present application, the first connecting line and the orthographic projection of the pixel definition layer on the driving substrate overlap to form the first overlapping area; in the pixel area, the pixel definition layer forms the first via hole, and the metal layer is electrically connected to the first connecting line through the first via hole; the pixel definition layer is provided between the third connecting line and the first connecting line to insulate the third connecting line from the first connecting line.

[0008] In an exemplary embodiment of the present application, the first connecting line and the orthographic projection of the pixel definition layer on the driving substrate overlap to form the first overlapping area, and in the extension area, the pixel definition layer forms the first via hole; the third connecting line passes through the first via hole and is electrically connected to the first connecting line.

[0009] In an exemplary embodiment of the present application, the isolation structure includes a main body portion and a first reinforcement portion extending toward a side away from the pixel opening, wherein the width of the first reinforcement portion in a direction from the pixel opening to the extension area is greater than the width of the main body portion, and the first connecting line connects the first reinforcement portion.

[0010] In an exemplary embodiment of the present application, the isolation structure includes a main body portion and a second reinforcement portion extending toward a side away from the pixel opening, wherein the width of the second reinforcement portion in a direction from the pixel opening to the extension area is greater than the width of the main body portion, and the second connecting line connects the second reinforcement portion.

[0011] In an exemplary embodiment of the present application, the width of the insulating layer is greater than the width of the metal layer, the metal layer gradually decreases from close to the pixel definition layer to away from the pixel definition layer, and the insulating layer gradually decreases from close to the metal layer to away from the metal layer.

[0012] In an exemplary embodiment of the present application, on the side of the isolation structure facing the extension area, the side surface of the insulating layer and the side surface of the metal layer are on the same plane; on the side of the isolation structure facing the pixel opening, the insulating layer extends outside the metal layer along the length direction of the driving substrate.

[0013] The present application also provides a display device, comprising the display panel.

[0014] A display panel and a display device of the present application have the following beneficial effects: the pixel area formed on the driving substrate is used to set the pixel unit, the extension area is used to provide compensation when the display panel is stretched, the pixel unit includes a pixel definition layer, a sub-pixel and an isolation structure, the isolation structure is used to isolate adjacent sub-pixels to achieve independent packaging, and the anode, the light-emitting layer and the cathode of the sub-pixel are isolated from the extension area, and the light-emitting layer emits light under the drive of the anode and the cathode. The isolation structure includes a metal layer and an insulating layer, and the display panel also includes a first connecting line arranged on the driving substrate, the first connecting line is insulated from the anode to reduce the signal interference between the first connecting line and the anode, the pixel definition layer forms a first via hole in the first overlapping area, the metal layer is electrically connected to the first connecting line through the first via hole, so that the cathode signal is transmitted to the first connecting line through the metal layer, and in this design, the first connecting line and the anode are arranged in the same layer, and the two can be formed by the same process and material, so that the differentiation of the first connecting line can be reduced, and the process can be reduced, and the metal layer is electrically connected to the first connecting line through the first via hole, and the electrical signal is transmitted between the metal layer and the first connecting line. Part of the first connecting line overlaps 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 hole is surrounded by the pixel definition layer; thus, the pixel definition layer can protect the connection between part of the first connecting line, the metal layer and the first connecting line. When the display panel is stretched, the risk of disconnection between the metal layer and the first connecting line can be reduced, thereby improving the effectiveness and stability of the signal transmission of the connecting line.

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

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

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

[0020] Figure 3 is a second structural schematic diagram of a display panel in an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 A schematic cross-sectional view at the middle BB, wherein shielding portions are formed on both sides of the isolation structure;

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

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

[0024] Figure 7 yes Figure 3 A cross-sectional schematic diagram at BB in the middle, wherein the isolation structure forms a shielding portion on one side facing the pixel opening.

[0025] Description of reference numerals:

[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 hole; 23. second via hole; 30. sub-pixel; 31. anode; 32. light-emitting layer; 33. cathode; 40. isolation structure; 401. main body; 402. first reinforcement part; 403. second reinforcement 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 DESCRIPTION

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

[0028] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application 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 are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0030] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0031] Stretchable display technology enables the display screen to be stretched in all directions to change its shape, and can also adapt to surfaces of any shape. Stretchable screens can be flexibly applied in various fields, such as consumer electronics, public display, medical, biological, wearable, gaming, fashion, and automotive scenarios. In existing stretchable display technologies, the design of signal transmission in the stretching area is mostly to connect the metal layers of adjacent isolation structures through metal connecting wires. Therefore, how to make the connecting wires perform effective and stable signal transmission is a technical problem that needs to be solved urgently.

[0032] In order to solve the above technical problems, the present application provides a display panel, referring to Figure 1 and Figure 2As shown, it includes a driving substrate 10, a pixel definition layer 20, a sub-pixel 30, an isolation structure 40 and a first connection line 50. The driving substrate 10 forms a pixel area 11 and an extension area 12; the pixel definition layer 20 is arranged on the driving substrate 10, and the pixel definition layer 20 protrudes from the substrate to form a pixel opening 21; the sub-pixel 30 is arranged at the pixel opening 21, and the sub-pixel 30 includes an anode 31, a light-emitting layer 32 and a cathode 33 stacked from close to the driving substrate 10 to away from the driving substrate 10; the isolation structure 40 is arranged on the pixel definition layer 20 and is located on the periphery of the pixel opening 21 to separate the pixel area 11 and the extension area 12, and the isolation structure 40 includes a cathode 33 stacked from close to the pixel definition layer 21 to separate the pixel area 11 and the extension area 12. 0, a metal layer 41 and an insulating layer 42 are stacked and arranged away from the pixel definition layer 20; a first connecting line 50 is arranged on the driving substrate 10, the first connecting line 50 extends from the extension area 12 to the pixel area 11, and the first connecting line 50 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 hole 22 in the first overlapping area S1, and the metal layer 41 passes through the first via hole 22 to be 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 the pixel unit, the extension area 12 is used to provide compensation when the display panel is stretched, and 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 packaging, and isolate the anode 31, the light-emitting layer 32 and the 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 the cathode 33. The isolation structure 40 includes a metal layer 41 and an insulating layer 42. The display panel also includes a first connecting line 50 arranged on the driving substrate 10. The first connecting line 50 is insulated from the anode 31 to reduce signal interference between the first connecting line 50 and the anode 31. The pixel definition layer 20 forms a first via hole 22 in the first overlapping area S1. The metal layer 41 is electrically connected to the first connecting line 50 through the first via hole 22, so that the cathode 33 signal is transmitted to the first connecting line 50 through the metal layer 41. In this design, the first connecting line 50 and the anode 31 are arranged on the same layer, and the two can be formed by the same process and material, thereby reducing the differentiation of the first connecting line 50 and reducing the process flow. The metal layer 41 is electrically connected to the first connecting line 50 through the first via hole 22 to transmit electrical signals between the metal layer 41 and the first connecting line 50. Part of the first connection line 50 overlaps with the pixel definition layer 20, so that part of the first connection line 50 is covered by the pixel definition layer 20; part of the metal layer 41 passing through the first via hole 22 is surrounded by the pixel definition layer 20; thus, the connection between part of the first connection line 50, the metal layer 41 and the first connection line 50 can be protected by the pixel definition layer 20. When the display panel is stretched, the risk of disconnection between the metal layer 41 and the first connection line 50 can be reduced, thereby improving the effectiveness and stability of the signal transmission of the connection line.

[0034] In some embodiments, reference Figure 1 and Figure 2 As shown, the pixel areas 11 are arranged at intervals, and the extension areas 12 are arranged at intervals; in the same direction, the pixel areas 11 and the extension areas 12 are arranged alternately. When stretched, the staggered extension areas 12 may be deformed, and the extension areas 12 become longer in the stretching direction, while the area of ​​the pixel areas 11 does not change, thereby achieving stretching of the display screen. The display screen can be stretched to a larger area by using multiple extension areas 12, thereby increasing the display area of ​​the display screen.

[0035] In some embodiments, reference Figure 2As shown, the driving substrate 10 includes a flexible substrate 101 and a driving circuit 102. The flexible substrate 101 may be a glass flexible substrate 101 or an organic flexible substrate 101. The driving circuit 102 may be a thin film transistor (TFT) circuit layer, and the TFT circuit layer is used to drive the light-emitting layer 32 of the OLED. The specific TFT circuit layer includes a plurality of driving circuit 102 units arranged in an array, and each driving circuit 102 unit may 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 a low temperature polysilicon (LTPS) type or a metal oxide semiconductor (MOS) type, such as a metal oxide semiconductor type of indium gallium zinc oxide (IGZO).

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

[0037] In some embodiments, the material of the pixel definition layer 20 may be an organic material, an organic material having an inorganic coating disposed thereon, or one of 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 a combination thereof.

[0038] In some embodiments, reference Figure 2 As shown, the isolation structure 40 includes a main body 401 and a first reinforcement portion 402 extending to a side away from the pixel opening 21, the width of the first reinforcement 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, and the first connection line 50 is connected to the first reinforcement portion 402. Forming the first reinforcement portion 402 on the isolation structure 40 can increase the connection strength of the first connection line 50 and the isolation structure 40, reduce the risk of the first connection line 50 and the isolation structure 40 being separated due to the stretching of the display panel, and thus can increase the connection stability of the first connection line 50 and the isolation structure 40.

[0039] In some embodiments, reference Figure 2As shown, the first connecting line 50 and the anode 31 are arranged 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 insulate the two. 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, reference Figure 2 As shown, the orthographic projection refers to the projection produced when the parallel projection line is perpendicular to the projection plane. The orthographic projection 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 area S1, that is, the first connecting line 50 and the pixel definition layer 20 at least partially overlap on the driving substrate 10 in 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 staggered and overlapped; the first connecting line 50 and the pixel definition layer 20 may completely overlap (hereinafter referred to as overlap), 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 on the first connecting line 50.

[0042] In some embodiments, the first via hole 22 may be formed by etching on the pixel definition layer 20, and the aperture of the first via hole 22 gradually decreases from away from the substrate to close to the substrate. The first via hole 22 is formed to allow a downward deposition space when the metal layer 41 is deposited later, 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, reference Figure 3 and Figure 4As shown, part of the anode 31 extends from the pixel area 11 to the extension area 12. On the side of the isolation structure 40 facing the extension area 12, the orthographic projections of the anode 31 and the pixel definition layer 20 on the drive substrate 10 at least partially overlap to form a second overlap area S2. The pixel definition layer 20 forms a second via 23 in the second overlap area S2. The display panel also includes a second connection line 60. The second connection line 60 is arranged on the side of the pixel definition layer 20 away from the drive substrate 10, and the second connection line 60 is insulated from the metal layer 41. The second connection line 60 passes through the second via 23 and is electrically connected to the anode 31. As a result, part of the anode 31 extends from the pixel area 11 to the extension area 12 so that part of the anode 31 is wider than other parts of the anode 31. The orthographic projections of the anode 31 and the pixel definition layer 20 on the drive substrate 10 at least partially overlap, that is, the anode 31 and the pixel definition layer 20 at least partially overlap on the drive substrate 10 in the vertical direction. The second connection line 60 is electrically connected to the anode 31 through the second via 23, and electrical signals are transmitted between the anode 31 and the second connection line 60. The first connection line 50 can be electrically connected to other components of the display panel as a backup signal line, thereby realizing signal transmission between the anode 31 and other components, and the other components here can be a touch layer.

[0044] In some embodiments, reference Figure 3 As shown, the isolation structure 40 includes a main body 401 and a second reinforcement portion 403 extending to a side away from the pixel opening 21, the width of the second reinforcement 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, and the second connection line 60 is connected to the second reinforcement portion 403. Forming the second reinforcement portion 403 on the isolation structure 40 can increase the connection strength of the second connection line 60 and the isolation structure 40, reduce the risk of the second connection line 60 and the isolation structure 40 being separated due to the stretching of the display panel, and thus can increase the connection stability of the second connection line 60 and the isolation structure 40.

[0045] In some embodiments, reference Figure 5 and Figure 6 As shown, the display panel further includes a third connection line 70 corresponding to the first connection line 50, the third connection line 70 extends from the extension area 12 to the pixel area 11 and is electrically connected to the metal layer 41, the third connection line 70 and the metal layer 41 are formed by deposition, and the third connection line 70 and the metal layer 41 are an integral structure; wherein, part of the third connection line 70 is reused as the metal layer 41; or, part of the metal layer 41 is reused as the third connection line 70. The third connection line 70 and the first connection line 50 transmit the same cathode 33 signal, the third connection line 70 can be on the same vertical plane as the first connection line 50, so as to be electrically connected to the metal layer 41 at the same time, and the third connection line 70 and the metal layer 41 can be formed by depositing the same material at the same time, so as to save process steps.

[0046] In some embodiments, reference Figure 5 and Figure 6 As shown, the orthographic projections of the first connection line 50 and the pixel definition layer 20 on the driving substrate 10 overlap to form a first overlapping area S1, and there is a pixel definition layer 20 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; in the pixel area 11 and / or the extension area 12, the pixel definition layer 20 can form a first via hole 22, and the metal layer 41 or the third connection line 70 passes through the first via hole 22 to be electrically connected to the first connection line 50; because the metal layer 41 surrounds the peripheral side of the pixel opening 21, the first connection line 50, the second connection line 60 and the third connection line 70 transmit the electrical signal of the adjacent metal layer 41, and the first connection line 50, the second connection line 60 and the third connection line 70 need to be stretched, therefore, the size of the first connection line 50, the second connection line 60 and the third connection line 70 is smaller than the metal layer 41. The pixel definition layer 20 completely overlaps with the first connection line 50 so that the pixel definition layer 20 covers the extension area 12, which can protect the first connection line 50, the second connection line 60 and the third connection line 70 and absorb the stress of the first connection line 50, the second connection line 60 and the third connection line 70 when stretched. Therefore, the first via 22 is provided in the pixel area 11 and the extension area 12 to realize the jumper connection between the metal layer 41 or the third connection line 70 and the first connection line 50.

[0047] In some embodiments, reference Figure 5 As shown, when the first via hole 22 is provided in the pixel definition layer 20 of the pixel area 11, the metal layer 41 passes through the first via hole 22 and is electrically connected to the first connection line 50, and there is a pixel definition layer 20 between the third connection line 70 and the first connection line 50, so that the third connection line 70 is insulated from the first connection line 50. Thus, the electrical signal of the metal layer 41 is separately transmitted by the first connection line 50 and the third connection line 70 to the metal layer 41 of the adjacent isolation structure 40, and such a design can increase the signal transmission area, so as to reduce the voltage drop of the display panel and improve the display quality.

[0048] In another embodiment, referring to Figure 6 As shown, when the first via hole 22 is provided in the pixel definition layer 20 of the extension area 12, the third connection line 70 passes through the first via hole 22 and is electrically connected to the first connection line 50, and there is a pixel definition layer 20 between the third connection line 70 and the first connection line 50, so that the third connection line 70 is insulated from the first connection line 50. Thus, 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 the first connection line 50 and the third connection line 70. Such a design can also increase the signal transmission area, so as to reduce the voltage drop of the display panel and improve the display quality.

[0049] In some embodiments, reference Figure 4As shown, the width of the insulating layer 42 is greater than that of the metal layer 41. The metal layer 41 gradually decreases from the direction close to the pixel definition layer 20 to the direction away from the pixel definition layer 20, and the insulating layer 42 gradually decreases from the direction close to the metal layer 41 to the direction away from the metal layer 41. Shielding parts are formed on both sides of the metal layer 41 close to the pixel opening 21 and the extension area 12, so that the evaporation source can be evaporated at a certain evaporation angle during evaporation to form different layer structures, and the specific layer structure includes a light-emitting layer 32 and a cathode 33.

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

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

[0052] The present application also provides a display device, including the above-mentioned display panel, the metal layer 41 is electrically connected to the first connecting line 50 by a jumper through the first via 22, and electrical signals are transmitted between the metal layer 41 and the first connecting line 50. The pixel definition layer 20 can protect part of the first connecting line 50, the connection between the metal layer 41 and the first connecting line 50. When the display panel is stretched, the risk of disconnection between the metal layer 41 and the first connecting line 50 can be reduced, thereby improving the effectiveness and stability of the signal transmission of the connecting line. The second connecting line 60 is electrically connected to the anode 31 by a jumper through 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 be electrically connected to other components of the display panel as a backup signal line, thereby realizing signal transmission between the anode 31 and other components.

[0053] In this application, unless otherwise clearly specified and limited, the terms "disposed (provided with)", "connected" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the description of this specification, the description of reference terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A display panel, characterized in that: include: A driving substrate, wherein the driving substrate forms a pixel area and an extension area; A pixel definition layer, the 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, the sub-pixel being disposed at the pixel opening, the sub-pixel comprising an anode, a light-emitting layer, and a cathode stacked from close to the drive substrate to away from the drive substrate; An isolation structure, the isolation structure is arranged on the pixel definition layer and is located at 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 close to the pixel definition layer to away from the pixel definition layer; A first connecting line, the first connecting line is arranged on the driving substrate, the first connecting line extends from the extension area to the pixel area, and the first connecting line 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 hole in the first overlapping area, and the metal layer is electrically connected to the first connecting line through the first via hole.

2. The display panel according to claim 1, characterized in that: Part of the anode extends from the pixel region to the extension region, and on the side of the isolation structure facing the extension region, the positive projections of the anode and the pixel definition layer on the drive substrate at least partially overlap to form a second overlap region, and the pixel definition layer forms a second via hole in the second overlap region; The display panel further includes a second connection line, which is arranged on a side of the pixel definition layer away from the drive substrate, and is insulated from the metal layer. The second connection line passes through the second via hole and is electrically connected to the anode.

3. The display panel according to claim 1, characterized in that: The display panel further includes a third connection line arranged corresponding to the first connection line, the third connection line extending from the extension area to the pixel area and 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 integrated structure; Part of the third connection lines is reused as a metal layer; or part of the metal layer is reused as a third connection line.

4. The display panel according to claim 3, characterized in that: The first connecting line and the orthographic projection of the pixel definition layer on the driving substrate overlap to form the first overlapping area; in the pixel area, the pixel definition layer forms the first via hole, and the metal layer is electrically connected to the first connecting line through the first via hole; the pixel definition layer is provided between the third connecting line and the first connecting line to insulate the third connecting line from the first connecting line.

5. The display panel according to claim 3, characterized in that: The first connection line and the orthographic projection of the pixel definition layer on the driving substrate overlap to form the first overlapping area. In the extended area, the pixel definition layer forms the first via hole. The third connection line passes through the first via hole and is electrically connected to the first connection line.

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

7. The display panel according to claim 2, characterized in that: The isolation structure includes a main body and a second reinforcement portion extending away from the pixel opening. The width of the second reinforcement portion in the direction from the pixel opening to the extension area is greater than the width of the main body. The second connecting line connects the second reinforcement portion.

8. 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 width of the metal layer gradually decreases from close to the pixel definition layer to away from the pixel definition layer. The width of the insulating layer gradually decreases from close to the metal layer to away from the metal layer.

9. The display panel according to claim 1, characterized in that: On the side of the isolation structure facing the extension area, the side of the insulating layer and the side of the metal layer are on the same plane; on the side of the isolation structure facing the pixel opening, the insulating layer extends outside the metal layer along the length direction of the drive substrate.

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

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