Display panel and display device

Abstract

The invention relates to the technical field of display screens, in particular to a display panel and a display device. The display panel comprises a flexible substrate, a pixel definition layer, a sub-pixel, an isolation structure and a connecting line. The isolation structures are arranged around the sub-pixels and can isolate the adjacent sub-pixels, so that the adjacent sub-pixels are independently packaged. And the adjacent isolation structures are connected through connecting wires. The connecting line and the isolation structure are connected with each other through a reinforcing part, the width of the reinforcing part in the direction from the pixel opening to the extension area is larger than the width of the isolation part, and the width of the connecting line in the extension direction of the isolation structure is smaller than the width of the reinforcing part. The connection strength between the connecting line and the isolation structure is increased through the reinforcing part, so that the tensile strength between the connecting line and the isolation structure can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, 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. When the display screen is stretched, the tensile strength between the connecting wires and the isolation structure will directly affect the quality and life of the display screen. Therefore, how to strengthen the tensile strength of the connecting wires and the isolation structure 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, which can increase the tensile strength of connecting lines and isolation structures.

[0004] The present application provides a display panel, comprising: a flexible substrate, on which a pixel region and an extension region are provided; a pixel definition layer, which is provided in the pixel region to form a pixel opening; a sub-pixel, which is provided in the pixel opening, and which comprises an anode, an organic light-emitting layer and a cathode which are sequentially stacked in a direction from close to the flexible substrate to away from the flexible substrate; an isolation structure, which is provided in the pixel definition layer, which surrounds the sub-pixel, part of which extends away from the pixel opening to form a reinforcement portion, and part of which connects the reinforcement portion to form an isolation portion, wherein the width of the reinforcement portion in the direction from the pixel opening to the extension region is greater than the width of the isolation portion; a connecting line, which is provided in the extension region, which is connected to adjacent isolation structures through the reinforcement portion, and wherein the width of the connecting line in the width direction of the isolation structure is less than the width of the reinforcement portion.

[0005] In an exemplary embodiment of the present application, the isolation structure includes a metal layer and an insulating layer which are arranged in sequence from close to the flexible substrate to away from the flexible substrate; the metal layer located at the reinforcement portion is a first metal layer, and the metal layer located at the isolation portion is a second metal layer; the insulating layer located at the reinforcement portion is a first insulating layer, and the insulating layer located at the isolation portion is a second insulating layer; in a direction from the pixel opening to the extension area, the width of the first metal layer is greater than the width of the second metal layer, and the width of the first insulating layer is greater than the width of the second insulating layer.

[0006] In an exemplary embodiment of the present application, the first metal layer is a full-surface layer structure, and the first metal layer extends from the pixel opening to the extension area; or, the first metal layer is a cross-sectional layer structure, and the first metal layer includes a first sub-metal layer and a second sub-metal layer and a connecting portion that are spaced apart, the first sub-metal layer is close to the pixel opening, the second sub-metal layer is close to the extension area, and the connecting portion is arranged between the first sub-metal layer and the second sub-metal layer.

[0007] In an exemplary embodiment of the present application, the first insulating layer is a full-surface layer structure, the first insulating layer extends from the pixel opening to the extension area, and part of the first insulating layer extends to the connecting line; or, the first insulating layer is a cross-sectional layer structure, the first insulating layer includes a first sub-insulating layer and a second sub-insulating layer arranged at intervals, the first sub-insulating layer is close to the pixel opening, and the second sub-insulating layer is close to the extension area; the first sub-insulating layer is arranged on the first metal layer, and extends from the extension area to the outside of the first metal layer in the direction from the pixel opening to the extension area; the second sub-insulating layer is arranged on the first metal layer, and part of the second sub-insulating layer extends from the pixel opening to the outside of the first metal layer in the direction from the pixel opening to the extension area, and part of the second sub-insulating layer overlaps with part of the connecting line.

[0008] In an exemplary embodiment of the present application, the first insulating layer is a full-surface layer structure, the first insulating layer extends from the pixel opening to the extension area, and the first insulating layer extends to the side of the first metal layer away from the pixel opening; or, the first insulating layer is a cross-sectional layer structure, the first insulating layer includes a first sub-insulating layer and a second sub-insulating layer arranged at intervals, the first sub-insulating layer is close to the pixel opening, and the second sub-insulating layer is close to the extension area; the first sub-insulating layer is arranged on the first metal layer, and extends from the extension area to the outside of the first metal layer; the second sub-insulating layer is arranged on the first metal layer, and the second sub-insulating layer extends from the pixel opening to the extension area to the side of the first metal layer away from the pixel opening.

[0009] In an exemplary embodiment of the present application, the pixel definition layer extends from one pixel opening through the extension area to another pixel opening; the connecting line includes a third metal layer, the third metal layer is arranged between the adjacent first metal layers, and the third metal layer is arranged on the pixel definition layer.

[0010] In an exemplary embodiment of the present application, the pixel definition layer extends from the pixel opening to the extension area, and the pixel definition layers of adjacent pixel areas are arranged at intervals; the connecting line includes a third metal layer, the third metal layer is arranged between the adjacent first metal layers, and the third metal layer extends from one pixel definition layer to another pixel definition layer via the flexible substrate of the extension area.

[0011] In an exemplary embodiment of the present application, the width of the first insulating layer gradually increases from a side close to the flexible substrate to a side away from the flexible substrate, and the width of the first metal layer gradually increases from a side close to the flexible substrate to a side away from the flexible substrate.

[0012] In an exemplary embodiment of the present application, the pixel areas are arranged at intervals, and the extension areas are arranged at intervals; in the same direction, the pixel areas and the extension areas are arranged alternately.

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

[0014] A display panel and a display device of the present application scheme have the following beneficial effects: the pixel area arranged on the flexible substrate can be used to accommodate sub-pixels, and the extension area can be used to provide an extension margin when the display screen is stretched, so that the display screen can be stretched in all directions. The pixel definition layer is arranged in the pixel area to form a pixel opening, and the sub-pixel is arranged in the pixel opening. The cathode and anode in the sub-pixel provide an electrical signal to the organic light-emitting layer to make the organic light-emitting layer electroluminescent. The isolation structure is arranged around the sub-pixel to isolate adjacent sub-pixels so that adjacent sub-pixels are independently packaged. Adjacent isolation structures are connected by connecting wires. The connecting wire and the isolation structure are connected to each other through a reinforcing portion. The width of the reinforcing portion in the direction from the pixel opening to the extension area is greater than the width of the isolation portion, and the width of the connecting wire in the extension direction of the isolation structure is less than the width of the reinforcing portion. The reinforcing portion increases the connection strength between the connecting wire and the isolation structure, thereby increasing the tensile strength between the connecting wire and the isolation structure.

[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 plan view schematic diagram of a display panel in an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 yes Figure 2 Schematic diagram of the cross section at II;

[0021] Figure 4 is a structural schematic diagram of a first embodiment of an isolation structure in an embodiment of the present invention;

[0022] Figure 5 yes Figure 2 Schematic diagram of the cross section at II-II;

[0023] Figure 6 is a structural schematic diagram of a second embodiment of an isolation structure in an embodiment of the present invention;

[0024] Figure 7 is a structural schematic diagram of a third embodiment of an isolation structure in an embodiment of the present invention;

[0025] Figure 8 is a structural schematic diagram of a fourth embodiment of an isolation structure in an embodiment of the present invention;

[0026] Fig. 9 is a structural schematic diagram of a fifth embodiment of an isolation structure in an embodiment of the present invention;

[0027] Fig.10 is a structural schematic diagram of a first embodiment of a connecting line in an embodiment of the present invention;

[0028] Fig.11 is a structural schematic diagram of a second embodiment of a connecting line in an embodiment of the present invention;

[0029] Fig.12 is a schematic structural diagram of a third embodiment of a connecting line according to an embodiment of the present invention;

[0030] Fig.13 It is a schematic diagram of the structure of the packaged display panel in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] Flexible substrate 100; substrate 101; flat layer 102; drive circuit 103; pad 104; pixel area 110; extension area 120; pixel definition layer 200; pixel opening 210; sub-pixel 300; anode 310; organic light-emitting layer 320; cathode 330; 340, insulating protection layer; isolation structure 400; metal layer 401; insulating layer 402; reinforcement part 410; first metal layer 411; first sub-metal layer 4111; second sub-metal layer 4112; connecting part 4113; first insulating layer 412; first sub-insulating layer 4121; second sub-insulating layer 4122; isolation part 420; second metal layer 421; second insulating layer 422; connecting line 500; third metal layer 510; first encapsulation layer 610; second encapsulation layer 620. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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. When the display screen is stretched, the tensile strength between the connecting wires and the isolation structure will directly affect the quality and life of the display screen. Therefore, how to strengthen the tensile strength of the connecting wires and the isolation structure is a technical problem that needs to be solved urgently.

[0038] In order to solve the above technical problems, refer to Figures 1 to 5 As shown, the present application provides a display panel, including a flexible substrate 100, a pixel definition layer 200, a sub-pixel 300, an isolation structure 400, and a connection line 500. Figure 1 and Figure 2 As shown, a pixel area 110 and an extension area 120 are provided on the flexible substrate 100; Figure 3 As shown, the pixel definition layer 200 is disposed in the pixel region 110 to form a pixel opening 210; the sub-pixel 300 is disposed in the pixel opening 210, and the sub-pixel 300 includes an anode 310, an organic light-emitting layer 320, and a cathode 330 which are sequentially stacked in a direction from close to the flexible substrate 100 to away from the flexible substrate 100; Figure 4 As shown, the isolation structure 400 is disposed on the pixel definition layer 200, and the isolation structure 400 is disposed around the sub-pixel 300. Part of the isolation structure 400 extends to the side away from the pixel opening 210 to form a reinforcement portion 410, and part of the isolation structure 400 connects the reinforcement portion 410 to form an isolation portion 420. The width of the reinforcement portion 410 in the direction from the pixel opening 210 to the extension area 120 is greater than the width of the isolation portion 420; Figure 5 As shown, the connection line 500 is provided in the extension area 120, and the connection line 500 is connected to adjacent isolation structures 400 through the reinforcement part 410, and the width of the connection line 500 in the width direction of the isolation structure 400 is smaller than the width of the reinforcement part 410. The width of the isolation structure 400 is the extension direction of the isolation part 420 connected to the reinforcement part 410.

[0039] Combination Figures 1 to 5As shown, the pixel area 110 provided on the flexible substrate 100 can be used to accommodate the sub-pixel 300, and the extension area 120 can be used to provide an extension margin when the display screen is stretched, so that the display screen can be stretched in all directions. The pixel definition layer 200 is provided in the pixel area 110 to form a pixel opening 210, and the sub-pixel 300 is provided in the pixel opening 210. The cathode 330 and the anode 310 in the sub-pixel 300 provide an electrical signal to the organic light-emitting layer 320 to make the organic light-emitting layer 320 electroluminescent. The isolation structure 400 is provided around the sub-pixel 300 to isolate adjacent sub-pixels 300, so that adjacent sub-pixels 300 are independently packaged. Adjacent isolation structures 400 are connected by connecting wires 500. The connecting line 500 and the isolation structure 400 are interconnected via a reinforcing portion 410. The width of the reinforcing portion 410 in the direction from the pixel opening 210 to the extension area 120 is greater than the width of the isolation portion 420. The width of the connecting line 500 in the extension direction of the isolation structure 400 is less than the width of the reinforcing portion 410. The reinforcing portion 410 increases the connection strength between the connecting line 500 and the isolation structure 400, thereby increasing the tensile strength between the connecting line 500 and the isolation structure 400.

[0040] In some embodiments, reference Figure 1 and Figure 2 As shown, the pixel areas 110 are arranged at intervals, and the extension areas 120 are arranged at intervals; in the same direction, the pixel areas 110 and the extension areas 120 are arranged alternately. When stretched, the alternately arranged extension areas 120 may be deformed, and the extension areas 120 become longer in the stretching direction, while the area of ​​the pixel areas 110 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 120, thereby increasing the display area of ​​the display screen.

[0041] In some embodiments, reference Figure 3 and Figure 5As shown, the flexible substrate 100 can be a glass flexible substrate 100 or an organic flexible substrate 100. The organic flexible substrate 100 includes a substrate 101, a flat layer 102 and a driving circuit 103. The material of the flat layer 102 can be polyimide (PI in English) and polyamide resin (PEN in English). The driving circuit 103 can be a thin film transistor (TFT in English) circuit layer, and the TFT circuit layer is used to drive the light-emitting layer of the OLED. The specific TFT circuit layer includes a plurality of driving circuit 103 units arranged in an array, and each driving circuit 103 unit can include a TFT device and a capacitor. Each driving circuit 103 unit corresponds to an anode 310 and an organic light-emitting layer 320. 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).

[0042] In some embodiments, reference Figure 5 As shown, the flexible substrate 100 may further include a pad 104 , and the pad 104 is used to connect the driving circuit 103 and the anode 310 to transmit an electrical signal.

[0043] In some embodiments, the material of the pixel definition layer 200 may be an organic material, an organic material with an inorganic coating disposed thereon, or an inorganic material. The organic material of the pixel definition layer 200 includes, but is not limited to, polyimide.

[0044] In some embodiments, the display panel includes a plurality of pixels for emitting light of different colors, and the plurality of pixels emit light to display an image. Each pixel is composed of three sub-pixels 300 of red, green, and blue superimposed and mixed to display a white image, and different color images are displayed by controlling the luminescence degree of sub-pixels 300 of different colors.

[0045] In some embodiments, reference Figure 3 As shown, the sub-pixel 300 includes an anode 310, an organic light-emitting layer 320 and a cathode 330. The anode 310 is disposed on the flexible substrate 100 in the pixel receiving area; the organic light-emitting layer 320 is disposed on the anode 310; and the cathode 330 is disposed on the organic light-emitting layer 320.

[0046] Further, see Figure 3As shown, the anode 310 is arranged between the pixel definition layer 200 and the flexible substrate 100. The anode 310 is arranged at intervals on one side surface of the flexible substrate 100. The material of the anode 310 includes but is not limited to chromium, titanium, gold, silver, copper, aluminum, ITO, a combination thereof or other suitable conductive materials. The organic light-emitting layer 320 is used to emit red light, blue light or green light when powered on. The organic light-emitting layer 320 may include one or more of HIL (Hole Injection Layer), HTL (Hole Transfer Layer), EML (Emitting Layer) and ETL (Electron Transfer Layer). The cathode 330 is arranged on the side of the organic light-emitting layer 320 away from the anode 310. The material of the cathode 330 includes but is not limited to chromium, titanium, gold, silver, copper, aluminum, ITO, a combination thereof or other suitable conductive materials. The material of the cathode 330 may be the same as that of the anode 310, or it may be different, and it is set according to the actual situation.

[0047] In some embodiments, an initial pixel definition layer 200 is formed on the anode 310 of the sub-pixel 300, and the initial pixel definition layer 200 is exposed and developed to form a pixel definition layer 200, so that the pixel definition layer 200 forms a pixel opening 210 located in the pixel accommodating area above the anode 310 of each sub-pixel 300, and the pixel definition layer 200 partially covers the anode 310 of the sub-pixel 300, an organic light-emitting material is evaporated on the pixel definition layer 200 and the anode 310 to form an organic light-emitting layer 320, and a cathode 330 material is evaporated on the organic light-emitting layer 320 to form a cathode 330.

[0048] In some embodiments, reference Figure 1 and Figure 2 As shown, the connecting line 500 includes a plurality of crest segments and a plurality of trough segments, which are staggered and interconnected to form a bridge-shaped routing line, which bends and extends in the extension area 120 and connects the adjacent isolation structures 400 .

[0049] In some embodiments, reference 3 and Figure 4As shown, the isolation structure 400 includes a metal layer 401 and an insulating layer 402 which are sequentially arranged from close to the flexible substrate 100 to away from the flexible substrate 100; the metal layer 401 located at the reinforcement portion 410 is a first metal layer 411, and the metal layer 401 located at the isolation portion 420 is a second metal layer 421; the insulating layer 402 located at the reinforcement portion 410 is a first insulating layer 412, and the insulating layer 402 located at the isolation portion 420 is a second insulating layer 422; in the direction from the pixel opening 210 to the extension area 120, the width of the first metal layer 411 is greater than the width of the second metal layer 421, and the width of the first insulating layer 412 is greater than the width of the second insulating layer 422. In the present application, the reinforcing portion 410 can also play an isolation role. The reinforcing portion 410 is formed by increasing the thickness of the isolation structure 400 in a certain direction. When forming the reinforcing portion 410, the metal layer 401 and the insulating layer 402 need to be extended at the same time so that the insulating layer 402 can keep covering the metal layer 401, so as to improve the tensile strength through the first metal layer 411 and the first insulating layer 412. Since the isolation structure 400 is arranged around the pixel opening 210, the direction from the pixel opening 210 to the extension area 120 is the radial direction of the pixel opening 210.

[0050] In some embodiments, reference Figure 7 As shown, the first metal layer 411 is a full-surface layer structure, and the first metal layer 411 extends from the pixel opening 210 to the extension area 120; or, referring to Figure 8 As shown, the first metal layer 411 is a cross-sectional layer structure, and the first metal layer 411 includes a first sub-metal layer 4111 and a second sub-metal layer 4112 and a connecting portion 4113, the first sub-metal layer 4111 is close to the pixel opening 210, the second sub-metal layer 4112 is close to the extension area 120, and the connecting portion 4113 is arranged between the first sub-metal layer 4111 and the second sub-metal layer 4112. The whole surface layer structure is a continuous structure of the metal layer 401 / or the insulating layer 402 on one surface, and the cross-sectional layer structure is a structure of the metal layer 401 / or the insulating layer 402 on one surface being disconnected at intervals. The first metal layer 411 is a whole surface layer structure, which can reduce the difficulty of the process and save the process cost. The first metal layer 411 is a cross-sectional layer structure, which can increase the deformation capacity of the reinforcing portion 410 and release the stress caused by deformation when bending. When the first metal layer 411 is a cross-sectional structure, the width of the connection portion 4113 in the extension direction of the isolation structure 400 is smaller than that of the first sub-metal layer 4111 and the second sub-metal layer 4112 , so as to provide electrical connection therebetween.

[0051] In some embodiments, reference Figure 4As shown, the first insulating layer 412 is a whole-surface layer structure, the first insulating layer 412 extends from the pixel opening 210 to the extension area 120, and part of the first insulating layer 412 extends to the connecting line 500; the first insulating layer 412 is a whole-surface layer structure that can cover more areas of the first metal layer 411 and can reduce the difficulty of the process. Figure 4 , Figure 6 and Figure 7 As shown, part of the first insulating layer 412 extends onto the connecting wire 500 and can overlap with part of the connecting wire 500. Specifically, the first insulating layer 412 at least extends to the outside of the connection between the second sub-metal layer 4112 and the connecting wire 500, so as to protect part of the connecting wire 500. The first insulating layer 412 is a whole surface layer structure and can be combined with the first metal layer 411 as a whole surface layer structure to form a reinforcement part 410 of the isolation structure 400. The first insulating layer 412 is a whole surface layer structure and can be combined with the first metal layer 411 as a cross-section layer structure to form another reinforcement part 410 of the isolation structure 400.

[0052] In some embodiments, reference Figure 6 and Figure 7 As shown, the first insulating layer 412 is a cross-sectional layer structure, and the first insulating layer 412 includes a first sub-insulating layer 4121 and a second sub-insulating layer 4122 which are arranged at intervals, the first sub-insulating layer 4121 is close to the pixel opening 210, and the second sub-insulating layer 4122 is close to the extension area 120; the first sub-insulating layer 4121 is arranged on the first metal layer 411, and extends from the extension area 120 to the outside of the first metal layer 411 in the direction from the pixel opening 210 to the extension area 120; the second sub-insulating layer 4122 is arranged on the first metal layer 411, and part of the second sub-insulating layer 4122 extends from the pixel opening 210 to the outside of the first metal layer 411 in the direction from the extension area 120, and part of the second sub-insulating layer 4122 overlaps with part of the connecting line 500. The first insulating layer 412 is a cross-sectional layer structure, which can increase the deformation ability of the reinforcing portion 410 and release the stress caused by deformation when bending. The first insulating layer 412 is a cross-sectional layer structure and can be combined with the first metal layer 411 as a cross-sectional layer structure to form a reinforcement part 410 of an isolation structure 400. The second insulating layer 422 is a cross-sectional layer structure and can be combined with the first metal layer 411 as a full-surface layer structure to form a reinforcement part 410 of another isolation structure 400.

[0053] In some embodiments, reference Figure 8As shown, the first insulating layer 412 is a full-surface layer structure, the first insulating layer 412 extends from the pixel opening 210 to the extension area 120, and the first insulating layer 412 extends to the side of the first metal layer 411 away from the pixel opening 210; the first insulating layer 412 does not cover the connecting wire 500, and the connecting wire 500 is exposed outside the insulating layer 402, and the connecting wire 500 is sealed through subsequent packaging. Such a design can increase the deformation ability of the connecting wire 500, so that the connecting wire 500 can release the stress caused by deformation when bending.

[0054] In some embodiments, reference Fig. 9 As shown, the first insulating layer 412 is a cross-sectional layer structure, and the first insulating layer 412 includes a first sub-insulating layer 4121 and a second sub-insulating layer 4122 which are arranged at intervals, the first sub-insulating layer 4121 is close to the pixel opening 210, and the second sub-insulating layer 4122 is close to the extension area 120; the first sub-insulating layer 4121 is arranged on the first metal layer 411, and extends from the extension area 120 to the outside of the first metal layer 411 in the direction from the pixel opening 210 to the pixel opening 210; the second sub-insulating layer 4122 is arranged on the first metal layer 411, and the second sub-insulating layer 4122 extends from the pixel opening 210 to the direction from the extension area 120 to the extension area 120 to the side of the first metal layer 411 away from the pixel opening 210. That is, the first sub-insulating layer 4121 can shield the first metal layer 411 on one side of the pixel opening 210 during evaporation, and the second sub-insulating layer 4122 is flush with the side of the first metal layer 411 away from the pixel opening 210, and does not cover the connecting line 500, thereby further releasing the stress caused by deformation of the connecting line 500 when it is bent.

[0055] In some embodiments, the first insulating layer 412 extends to the outside of the first metal layer 411 on one side of the pixel opening 210, that is, the first insulating layer 412 can extend out of the first metal layer 411 on one side of the pixel opening 210 to achieve different evaporation angles of the sub-pixel 300 to enable the display panel to emit light.

[0056] In some embodiments, reference Fig.10 As shown, the pixel definition layer 200 extends from one pixel opening 210 to another pixel opening 210 through the extension area 120; the connection line 500 includes a third metal layer 510, the third metal layer 510 is disposed between adjacent first metal layers 411, and the third metal layer 510 is disposed on the pixel definition layer 200. The pixel definition layer 200 extends from one pixel opening 210 to another pixel opening 210, and is disposed in the extension area 120, which can increase the structural strength of the extension area 120 and facilitate the manufacturing of the extension area 120. The third metal layer 510 is extended along the pixel definition layer 200 and connected between two adjacent first metal layers 411.

[0057] In some embodiments, reference Fig.11 and Fig.12 As shown, the pixel definition layer 200 extends from the pixel opening 210 to the extension area 120, and the pixel definition layers 200 of adjacent pixel areas 110 are arranged at intervals; the connecting line 500 includes a third metal layer 510, and the third metal layer 510 is arranged between adjacent first metal layers 411, and the third metal layer 510 extends from one pixel definition layer 200 to another pixel definition layer 200 via the flexible substrate 100 of the extension area 120. The pixel definition layers 200 of adjacent pixel areas 110 are arranged at intervals to form the extension area 120, that is, the extension area 120 includes structures such as the flexible substrate 100 and the connecting line 500, but does not include the pixel definition layer 200. The first metal layer 411 is transformed back to form the connecting line 500 along the surface of the pixel definition layer 200 and the surface of the flexible substrate 100 during deposition, that is, the connecting line 500 is bent and extended in the extension area 120. Such a design can further release the stress caused by deformation when the connecting line 500 is bent. Specifically, refer to Fig.11 As shown, the first insulating layer 412 extends from the pixel opening 210 to the direction of the extension area 120 to the outside of the first metal layer 411; Fig.12 As shown, the first insulating layer 412 extends from the pixel opening 210 to the extension region 120 to the side surface of the first metal layer 411 , and is on the same plane as the side surface of the first metal layer 411 .

[0058] In some embodiments, the width of the first insulating layer 412 gradually increases from the side close to the flexible substrate 100 to the side away from the flexible substrate 100, and the width of the first metal layer 411 gradually increases from the side close to the flexible substrate 100 to the side away from the flexible substrate 100. The width of the first metal layer 411 gradually decreases from the side close to the flexible substrate 100 to the side away from the flexible substrate 100, and the width of the first metal layer 411 close to the first insulating layer 412 is less than the width of the first insulating layer 412 close to the first metal layer 411. The above design can form a "mushroom-shaped" isolation structure 400, which can play a shielding role when evaporating the organic light-emitting layer 320 and the cathode 330 of the sub-pixel 300, and the organic light-emitting layer 320 and the cathode 330 of the adjacent sub-pixel 300 can be isolated from the reinforcing portion 410 through different shielding angles.

[0059] In some embodiments, the cross-section of the reinforcement portion 410 may be circular, trapezoidal, or polygonal, depending on actual conditions.

[0060] In some embodiments, reference Fig.13As shown, the sub-pixel 300 further includes an insulating protective layer 340, which is disposed on the cathode 330, and the insulating protective layer 340 extends along both sides of the cathode 330 to the first metal layer 411 of the isolation structure 400. The insulating protective layer 340 is used to provide insulation protection for the cathode 330 and the isolation structure 400. For example, the insulating protective layer 340 is an inorganic material.

[0061] In some embodiments, reference Fig.13 As shown, the display panel also includes a first encapsulation layer 610 and a second encapsulation layer 620. The first encapsulation layer 610 is encapsulated on the extension area 120 and the pixel area 110, and the second encapsulation layer 620 is encapsulated on the first encapsulation layer 610, thereby forming a multi-layer encapsulation for the display panel, so that the display panel has better wear resistance and can effectively increase the service life of the display panel.

[0062] The present application also provides a display device, comprising the above-mentioned display panel, through which the tensile strength of the display screen can be improved, so that the display device has a better display effect.

[0063] 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.

[0064] 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.

[0065] 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 flexible substrate, wherein a pixel area and an extension area are provided on the flexible substrate; A pixel definition layer, the pixel definition layer is arranged in the pixel area to form a pixel opening; A sub-pixel, the sub-pixel being disposed at the pixel opening, the sub-pixel comprising an anode, an organic light-emitting layer, and a cathode which are sequentially stacked in a direction from close to the flexible substrate to away from the flexible substrate; an isolation structure, the isolation structure being disposed on the pixel definition layer, the isolation structure being disposed around the sub-pixel, a portion of the isolation structure extending toward a side away from the pixel opening to form a reinforcement portion, a portion of the isolation structure connecting the reinforcement portion to form an isolation portion, and a width of the reinforcement portion in a direction from the pixel opening to the extension region being greater than a width of the isolation portion; A connecting line is arranged in the extension area, the connecting line is connected to adjacent isolation structures through the reinforcing part, and the width of the connecting line in the width direction of the isolation structure is smaller than the width of the reinforcing part.

2. The display panel according to claim 1, characterized in that: The isolation structure comprises a metal layer and an insulating layer which are sequentially arranged from close to the flexible substrate to far away from the flexible substrate; The metal layer located at the reinforcing portion is a first metal layer, and the metal layer located at the isolating portion is a second metal layer; The insulating layer located at the reinforcing portion is a first insulating layer, and the insulating layer located at the isolating portion is a second insulating layer; In a direction from the pixel opening to the extension region, the width of the first metal layer is greater than the width of the second metal layer, and the width of the first insulating layer is greater than the width of the second insulating layer.

3. The display panel according to claim 2, characterized in that: The first metal layer is a full-surface layer structure, and the first metal layer is extended from the pixel opening to the extension area; or The first metal layer is a cross-section layer structure, and the first metal layer includes a first sub-metal layer, a second sub-metal layer and a connecting portion which are spaced apart from each other. The first sub-metal layer is close to the pixel opening, the second sub-metal layer is close to the extension area, and the connecting portion is arranged between the first sub-metal layer and the second sub-metal layer.

4. The display panel according to claim 2, characterized in that: The first insulating layer is a full-surface layer structure, the first insulating layer is extended from the pixel opening to the extension area, and a portion of the first insulating layer extends to the connecting line; or, The first insulating layer is a cross-section layer structure, and the first insulating layer includes a first sub-insulating layer and a second sub-insulating layer that are spaced apart, the first sub-insulating layer is close to the pixel opening, and the second sub-insulating layer is close to the extension area; The first sub-insulating layer is disposed on the first metal layer and extends from the extension area to the pixel opening to the outside of the first metal layer; The second sub-insulating layer is disposed on the first metal layer, and a portion of the second sub-insulating layer extends from the pixel opening to the extension area to outside the first metal layer, and a portion of the second sub-insulating layer overlaps a portion of the connecting line.

5. The display panel according to claim 2, characterized in that: The first insulating layer is a full-surface layer structure, the first insulating layer is extended from the pixel opening to the extension area, and the first insulating layer extends to the side of the first metal layer away from the pixel opening; or, The first insulating layer is a cross-section layer structure, and the first insulating layer includes a first sub-insulating layer and a second sub-insulating layer that are spaced apart, the first sub-insulating layer is close to the pixel opening, and the second sub-insulating layer is close to the extension area; The first sub-insulating layer is disposed on the first metal layer and extends from the extension area to the pixel opening to the outside of the first metal layer; The second sub-insulating layer is disposed on the first metal layer, and the second sub-insulating layer extends from the pixel opening to the extension region to a side surface of the first metal layer away from the pixel opening.

6. The display panel according to any one of claims 2 to 5, characterized in that: The pixel definition layer extends from one pixel opening through the extension area to another pixel opening; the connection line includes a third metal layer, the third metal layer is arranged between adjacent first metal layers, and the third metal layer is arranged on the pixel definition layer.

7. The display panel according to any one of claims 2 to 5, characterized in that: The pixel definition layer extends from the pixel opening to the extension area, and the pixel definition layers of adjacent pixel areas are arranged at intervals; The connecting line includes a third metal layer, the third metal layer is arranged between adjacent first metal layers, and the third metal layer extends from one pixel definition layer to another pixel definition layer via the flexible substrate in the extension area.

8. The display panel according to claim 2, characterized in that: The width of the first insulating layer gradually increases from a side close to the flexible substrate to a side away from the flexible substrate, and the width of the first metal layer gradually increases from a side close to the flexible substrate to a side away from the flexible substrate.

9. The display panel according to claim 1, characterized in that: The pixel areas are arranged at intervals, and the extension areas are arranged at intervals; in the same direction, the pixel areas and the extension areas are arranged alternately.

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

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