Pixel driving circuit, display panel and display device

Abstract

The present application relates to a display panel (100) and a display device. The display panel (100) comprises a flexible substrate (10), and a plurality of pixel islands (20) and connecting portions (30) which are arranged on one side of the flexible substrate (10), and encapsulation layers (40) each arranged on the sides of the pixel island (20) and the connecting portion (30) away from the flexible substrate (10). The plurality of pixel islands (20) are arranged in a matrix and spaced apart from each other, each pixel island (20) comprises at least one pixel unit (201), and each connecting portion (30) is stretchably connected between two adjacent pixel islands (20). The display panel (100) further comprises bending-oriented structures (50) arranged around the pixel islands (20) at intervals and encapsulated by the encapsulation layers (40). Each bending-oriented structure (50) is strip-shaped, with the extension direction intersected with the stretching direction of the corresponding connecting portion (30), and the Young's modulus of the bending-oriented structure (50) is greater than the Young's modulus of the encapsulation layer (40), so that when bending, the display panel (100) bends at the bending-oriented structure (50). When bending, the display panel (100) can protect the pixel islands (20) from being distorted, thereby improving the display effect.

Description

Pixel driving circuit, display panel and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent application 2023118337343 filed on December 27, 2023, and all of its contents are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0004] Stretchable display panels are an important technological upgrade for flexible displays following foldable ones. They have the ability to be variable in any direction and to recover in any direction. They have broad application prospects and can be used in various fields such as consumer electronics, public displays, medical treatment, biology, wearables, gaming, fashion, and automotive applications.

[0005] Current stretchable display panels typically include island-shaped light-emitting areas and bridge-shaped wiring areas. Curved wiring is typically designed to enhance the wiring area's deformation capability. However, due to the aforementioned structural design flaws, distortion in the wiring area further causes distortion in the island-shaped light-emitting area, reducing the reliability of the pixel units in the island-shaped display area and degrading the display quality. Summary of the Invention

[0006] The present application provides a display panel and a display device, which aim to solve the problem in the prior art that the distortion of the bridge-shaped wiring area causes the distortion of the island-shaped light-emitting area, resulting in a deterioration of the display effect.

[0007] In order to solve the above technical problems, the first technical solution provided by this application is to provide a display panel. The display panel includes:

[0008] Flexible substrate;

[0009] A plurality of pixel islands are provided on one side of the flexible substrate, wherein the plurality of pixel islands are arranged in a matrix and spaced apart, and each pixel island includes at least one pixel unit;

[0010] a connecting portion, stretchably connected between two adjacent pixel islands;

[0011] an encapsulation layer, disposed on a side of the pixel island and the connecting portion away from the flexible substrate, and configured to encapsulate the pixel island and the connecting portion;

[0012] In which, the display panel also includes: a bending tendency structure, which is arranged at intervals around the pixel island and is encapsulated by the encapsulation layer; the bending tendency structure is strip-shaped and the extension direction intersects with the stretching direction of the connecting part, and the Young's modulus of the bending tendency structure is greater than the Young's modulus of the encapsulation layer, so that the display panel bends at the bending tendency structure when it is bent.

[0013] Wherein, the connecting portion includes a signal line electrically connected between adjacent pixel islands;

[0014] The bending tendency structure is disposed between adjacent pixel islands and intersects with the connecting portion. The bending tendency structure has a channel at a portion intersecting with the connecting portion, and the signal line passes through the channel.

[0015] wherein the radial dimension of the channel is greater than the width of the connecting portion;

[0016] The bending tendency structure is disconnected at the position of the connecting portion to form the channel, so that the signal line passes through the channel; or

[0017] The bending tendency structure is provided with a through hole at the position of the connecting portion to form the channel, so as to allow the signal line to pass through the channel.

[0018] The surface of the bending tendency structure away from the flexible substrate is an arc-shaped surface, and / or the end of the bending tendency structure is an arc-shaped or rounded shape.

[0019] The pixel island includes a circuit layer, a planar layer, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, and a first insulating layer stacked in sequence in a direction away from the flexible substrate;

[0020] In which, the first electrode layer includes at least one first electrode, the pixel definition layer is arranged around the first electrode to form a pixel opening, the light-emitting layer is arranged in the pixel opening, the second electrode layer is arranged on the light-emitting layer, and the first electrode and the corresponding light-emitting layer and the second electrode layer form the pixel unit.

[0021] Wherein, the pixel island further includes a partition structure, and the partition structure includes a conductive portion and an overhanging portion;

[0022] The conductive portion is disposed on the pixel definition layer and surrounds the pixel opening, and the conductive portion is in contact with and connected to the second electrode layer, so that the second electrode layers of adjacent pixel units are electrically connected to each other;

[0023] The overhang portion is disposed on the conductive portion and surrounds the pixel opening, and the overhang portion covers the conductive portion and extends out of the conductive portion;

[0024] The first insulating layer is disposed on a side of the second electrode layer away from the light-emitting layer, extends out of the pixel opening, and covers the overhanging portion.

[0025] Wherein, the bending tendency structure is provided in the same layer as the flat layer and is formed in the same patterning process as the flat layer; or,

[0026] The flat layer extends outward from the pixel island area to the entire display area. The bending tendency structure is arranged on the flat layer and is arranged on the same layer as the pixel definition layer and is formed in the same patterning process as the pixel definition layer.

[0027] In which, the bending tendency structure is arranged on opposite sides of the pixel island along the first direction, and / or the bending tendency structure is arranged on opposite sides of the pixel island along the second direction; in which, the row direction of the matrix formed by the arrangement of the pixel islands is the first direction, and the column direction is the second direction.

[0028] The bending tendency structure includes a first bending tendency structure and a second bending tendency structure, wherein the first bending tendency structure is disposed on two opposite sides of the pixel island along the first direction and extends along the second direction, and the second bending tendency structure is disposed on two opposite sides of the pixel island along the second direction and extends along the first direction;

[0029] Among them, the spacing between the first bending tendency structures on the opposite sides of the pixel island is a first distance, and the spacing between the second bending tendency structures on the opposite sides of the pixel island is a second distance; the length of the first bending tendency structure is less than the second distance, and the length of the second bending tendency structure is less than the first distance.

[0030] In order to solve the above technical problem, the second technical solution provided by the present application is to provide a display device. The display device includes the display panel involved in the above technical solution.

[0031] Advantageous Effects of the Present Application: Different from the prior art, the present application provides a display panel and a display device, the display panel comprising a flexible substrate, a pixel island and a connecting portion disposed on the flexible substrate, and an encapsulation layer disposed on a side of the pixel island and the connecting portion away from the flexible substrate. The present application provides a bending propensity structure around the pixel island, the bending propensity structure being spaced apart from the pixel island and encapsulated by the encapsulation layer; the bending propensity structure is strip-shaped and its extension direction intersects the tensile direction of the connecting portion, thereby surrounding or partially surrounding the pixel island. Furthermore, by making the Young's modulus of the bending propensity structure greater than that of the encapsulation layer, the bending propensity structure is less susceptible to bending deformation than the encapsulation layer, thereby forming a full-surface mesh support structure on the display panel. When the display panel is twisted and deformed, the bending propensity structure induces stress changes, inducing deformation of the display panel on both sides about the bending propensity structure, thereby protecting the pixel island and preventing deformation, thereby improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] FIG1 is a schematic diagram of a planar structure of a display panel provided in a first embodiment of the present application;

[0034] FIG2 is a schematic cross-sectional view of the structure taken along line AA in FIG1 ;

[0035] FIG3 is a schematic structural diagram of a first embodiment of a bending tendency structure;

[0036] FIG4 is a schematic structural diagram of a second embodiment of a bending tendency structure;

[0037] FIG5 is a schematic structural diagram of a third embodiment of a bending tendency structure;

[0038] FIG6 is a schematic diagram of a partial structure of a display panel provided in the embodiment of FIG1 ;

[0039] FIG7 is a schematic cross-sectional view of a display panel according to a second embodiment of the present application;

[0040] FIG8 is a schematic cross-sectional view of a display panel according to a third embodiment of the present application;

[0041] FIG9 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the present application;

[0042] FIG10 is a schematic diagram of a planar structure of a display panel provided in a fifth embodiment of the present application;

[0043] FIG11 is a schematic structural diagram of a display device provided in an embodiment of the present application.

[0044] Figure numerals: 100, display panel; 10, flexible substrate; 20, pixel island; 201, pixel unit; 21, circuit layer; 22, flat layer; 23, first electrode layer; 231, first electrode; 24, pixel definition layer; 25, light-emitting layer; 26, second electrode layer; 27, first insulating layer; 28, partition structure; 281, conductive portion; 282, overhanging portion; 30, connecting portion; 31, signal line; 40, encapsulation layer; 41, second insulating layer; 50, bending tendency structure; 51, first part; 52, second part; 53, channel; 501, first bending tendency structure; 502, second bending tendency structure; d1, first distance; d2, second distance; L1 / L2, length; w1 / w2, size; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0045] The following describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0046] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0049] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0051] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the planar structure of a display panel provided in the first embodiment of the present application, and Figure 2 is a schematic diagram of the cross-sectional structure taken along the AA line in Figure 1. In the present application, a display panel 100 is provided. The display panel 100 includes a flexible substrate 10, a plurality of pixel islands 20, a connecting portion 30, and an encapsulation layer 40. The pixel islands 20 and the connecting portion 30 are both disposed on one side of the flexible substrate 10, and the encapsulation layer 40 is disposed on a side of the pixel islands 20 and the connecting portion 30 that is away from the flexible substrate 10.

[0052] Specifically, the flexible substrate 10 is used to carry the pixel island 20 and the connecting portion 30. The flexible substrate 10 can be formed of a material with flexible bending properties such as polydimethylsiloxane (PDMS) or polyimide (PI) so that the display panel 100 can be stretched. A plurality of pixel islands 20 are arranged in a matrix and spaced apart. Each pixel island 20 includes at least one pixel unit 201 for displaying a picture. The connecting portion 30 is stretchably connected between two adjacent pixels for transmitting a driving signal, and when the panel is stretched, the connecting portion 30 is in a stretched state. The encapsulation layer 40 is provided on the side of the pixel island 20 and the connecting portion 30 away from the flexible substrate 10, and is used to encapsulate the pixel island 20 and the connecting portion 30 to prevent external water and oxygen from invading the interior of the pixel island 20 and causing problems such as failure of the display unit. The encapsulation layer 40 is also formed of a flexible material to support the display panel 100 to be stretched.

[0053] Furthermore, the display panel 100 also includes a bending tendency structure 50, which is arranged at intervals around the pixel island 20 and is encapsulated by the encapsulation layer 40; the bending tendency structure 50 is strip-shaped and the extension direction intersects with the tensile direction of the connecting portion 30, and the Young's modulus of the bending tendency structure 50 is greater than the Young's modulus of the encapsulation layer 40, so that the display panel 100 bends at the bending tendency structure 50 when it is bent.

[0054] Among them, the bending tendency structure 50 is arranged at intervals around the pixel island 20, specifically, the bending tendency structure 50 can be arranged on opposite sides of the pixel island 20 along the first direction X, and / or on opposite sides of the pixel island 20 along the second direction Y; wherein, the row direction of the matrix formed by the arrangement of the pixel islands 20 is the first direction X, and the column direction is the second direction Y.

[0055] In this embodiment, a bending tendency structure 50 is provided around the pixel island 20 and is spaced apart from the pixel island 20. The bending tendency structure 50 is strip-shaped and its extension direction intersects with the tensile direction of the connecting portion 30. Thus, the bending tendency structure 50 as a whole can form a mesh-like structure, which can surround the pixel island 20 or a portion thereof. At the same time, by making the Young's modulus of the bending tendency structure 50 greater than the Young's modulus of the encapsulation layer 40, that is, the bending tendency structure 50 is less likely to bend and deform than the encapsulation layer 40, the bending tendency structure 50 can form a mesh-like support structure on the display panel 100 that supports and protects the pixel island 20. When the display panel 100 is twisted and deformed, the setting of the bending tendency structure 50 changes the distribution of the bending stress, which can induce the display panel 100 to be more easily deformed at the bending tendency structure 50, thereby protecting the pixel island 20 and preventing the pixel island 20 from twisting and deforming, thereby improving the display effect.

[0056] Specifically, the connection portion 30 includes a signal line 31 electrically connected between adjacent pixel islands 20. The length of the signal line is greater than the spacing between the two pixel islands 20. The signal line 31 may specifically include drive signal lines such as scan lines, data lines, and common voltage lines. When the display panel 100 is in a first state, the signal line 31 is in a bent or twisted state. When the display panel 100 switches from the first state to the second state, the signal line 31 can be twisted or stretched, and as the deformation of the stretchable display panel 100 increases, the signal line 31 gradually approaches a straight line from a bent or twisted state. In this embodiment, the signal line 31 is configured as a serpentine line.

[0057] The bending-prone structure 50 is disposed between adjacent pixel islands 20 and intersects the connecting portion 30. The bending-prone structure 50 has a channel 53 at the intersection with the connecting portion 30. The signal line 31 passes through this channel 53 to prevent the bending-prone structure 50 from affecting the routing of the signal line 31, thereby ensuring that the display panel 100 can bend and stretch properly. Furthermore, the radial dimension of the channel 53 is greater than the width of the connecting portion 30. This prevents the channel 53 from being too narrow, which could affect the stretching or twisting deformation of the connecting portion 30, and prevents twisting or elongation of the signal line 31, which could lead to poor stretching or bending performance or display abnormalities, when the display panel 100 switches from the first state to the second state.

[0058] Please refer to Figure 3, which is a schematic diagram of a first embodiment of a bending-prone structure. In this embodiment, the bending-prone structure 50 is disconnected at the connection portion 30, forming a channel 53 for the signal line 31 to pass through. Specifically, the bending-prone structure 50 includes a first portion 51 and a second portion 52, which are disposed on opposite sides of the connection portion 30. A gap is formed between the first portion 51 and the second portion 52, forming the channel 53 for the signal line 31 of the connection portion 30 to pass through. Furthermore, the gap between the first portion 51 and the second portion 52 is greater than the width of the connection portion 30. In other words, the radial dimension of the channel 53 is greater than the width of the connection portion 30, thereby preventing the channel 53 from being too narrow and affecting the stretching or twisting deformation of the connection portion 30. Specifically, the radial dimension of the channel 53 can be set according to actual use requirements, as long as the above conditions are met. However, it should not be set too large to avoid compromising the protection of the pixel island 20.

[0059] Please refer to Figure 4, which is a schematic diagram of a second embodiment of a bending-prone structure. In this embodiment, the bending-prone structure 50 has a through-hole at the connection portion 30, forming a channel 53 for the signal line 31 to pass through. Specifically, the bending-prone structure 50 has a through-hole at the connection portion 30 along the extending direction of the connection portion 30, forming the channel 53 for the signal line 31 to pass through.

[0060] Specifically, the through hole can be shaped like a doorway or other shapes, and can be specifically set according to the actual production process requirements. As shown in Figure 4, the through hole of the bending tendency structure 50 has a notch on the side close to the flexible substrate 10 (i.e., above the signal line 31). In another embodiment, the through hole of the bending tendency structure 50 has a notch on the side away from the flexible substrate 10 (i.e., below the signal line 31); when the through hole has a notch on one side, it is beneficial to simplify the process to facilitate the production of the signal line 31, and the bending tendency structure 50 is still connected as a whole and is not in a disconnected state, which can effectively ensure the bending inducing effect of the bending tendency structure 50. Alternatively, the through hole of the bending tendency structure 50 does not have a notch, that is, the signal line 31 is surrounded by the through hole in the circumferential direction; when the through hole does not have a notch, it is more beneficial to strengthen the inducing effect of the bending tendency structure 50.

[0061] Similarly, the radial dimension of the channel 53 is greater than the width of the connecting portion 30, thereby preventing the channel 53 from being too narrow and affecting the stretching or twisting deformation of the connecting portion 30. Specifically, the radial dimension of the channel 53 can be set according to actual use requirements as long as it meets the above conditions, but it should not be set too large to avoid affecting the protection effect of the pixel island 20.

[0062] 2 and 5 , FIG5 is a schematic diagram of a third embodiment of a bending propensity structure. In this embodiment, the surface of the bending propensity structure 50 facing away from the flexible substrate 10 is curved, and / or the ends of the bending propensity structure 50 are curved or rounded.

[0063] As shown in Figure 2, the cross-section of the bending tendency structure 50 is semicircular or arc-shaped, and the side of its cross-section away from the flexible substrate 10 is arc-shaped, so that the surface of the bending tendency structure 50 away from the flexible substrate 10 is arc-shaped, so that when the display panel 100 is bent, the arc-shaped bending tendency structure 50 can serve as the bending deformation axis of the display panel 100, so as to improve the deformation effect of the display panel 100. It can be understood that when the display panel 100 is bent and deformed, due to the presence of the bending tendency structure 50, the display panel 100 is bent and deformed on both sides with the bending tendency structure 50 as the bending deformation axis. By making the side of the bending tendency structure 50 away from the flexible substrate 10 a curved surface, it is more conducive to the bending deformation of the display panel 100, thereby improving the deformation effect of the display panel 100.

[0064] Furthermore, as shown in FIG5 , the ends of the bending propensity structure 50 are arc-shaped or rounded. Specifically, the arc-shaped ends of the bending propensity structure 50 or the rounded ends of the original right angles prevent sharp corners at the ends of the bending propensity structure 50 , thereby preventing the bending propensity structure 50 from being damaged during the bending process of the display panel 100 . Furthermore, the bending propensity structure 50 is less likely to damage other adjacent film layers during the bending process, thereby improving the stability of the bending propensity structure 50 and protecting other film layers adjacent to the bending propensity structure 50 from damage.

[0065] Specifically, in this embodiment, the bending propensity structure 50 is disconnected at the connection portion 30 to form a channel 53. The disconnected portion is also the end of the bending propensity structure 50, which is also curved or rounded. It can be understood that the bending propensity structure 50 is disconnected at the connection position, dividing into a first portion 51 and a second portion 52. The two opposite ends of the first portion 51 are curved or rounded, and the two opposite ends of the second portion 52 are also curved or rounded. This prevents the bending propensity structure 50 from being damaged during the bending process of the display panel 100. During the bending process, the bending propensity structure 50 is also less likely to damage the signal line 31, preventing the signal line 31 from breaking when stretched or twisted during the bending process.

[0066] Please refer to Figure 6, which is a schematic diagram of a partial structure of the display panel provided in the embodiment of Figure 1. In this embodiment, the bending inclination structure 50 includes a first bending inclination structure 501 and a second bending inclination structure 502. The first bending inclination structure 501 is disposed on opposite sides of the pixel island 20 along the first direction X and extends along the second direction Y. The second bending inclination structure 502 is disposed on opposite sides of the pixel island 20 along the second direction Y and extends along the first direction X.

[0067] Among them, the spacing between the first bending tendency structures 501 on the opposite sides of the pixel island 20 is the first distance d1, and the spacing between the second bending tendency structures 502 on the opposite sides of the pixel island 20 is the second distance d2; the length L1 of the first bending tendency structure 501 is less than the second distance d2, and the length L2 of the second bending tendency structure 502 is less than the first distance d1; it can be interpreted that the opposite ends of the first bending tendency structure 501 do not exceed the two second bending tendency structures 502 on the opposite sides of the pixel island 20 along the second direction Y, and the opposite ends of the second bending tendency structure 502 do not exceed the two first bending tendency structures 501 on the opposite sides of the pixel island 20 along the first direction X, so that when the display panel 100 is bent, the bending performance of the display panel 100 in this direction is avoided to be affected by the excessive length L1 / L2 of the bending tendency structure 50.

[0068] Furthermore, in a specific embodiment, the length L1 of the first bending tendency structure 501 can be made equal to the dimension w2 of the pixel island 20 in the second direction Y, and the length L2 of the second bending tendency structure 502 can be made equal to the dimension w1 of the pixel island 20 in the first direction X; it can be interpreted that the opposite ends of the first bending tendency structure 501 are flush with the opposite sides of the pixel island 20 in the second direction Y, and the opposite ends of the second bending tendency structure 502 are flush with the two pairs of sides of the pixel island 20 in the first direction X, thereby avoiding the length L1 / L2 of the bending tendency structure 50 being too long to affect the bending performance of the display panel 100 in this direction, and further avoiding the length L1 / L2 of the bending tendency structure 50 being too short to affect the protection effect on the pixel island 20.

[0069] Continuing with FIG. 2 , in this embodiment, the pixel island 20 includes a circuit layer 21, a planar layer 22, a first electrode layer 23, a pixel definition layer 24, a light-emitting layer 25, a second electrode layer 26, and a first insulating layer 27, which are sequentially stacked in a direction away from the flexible substrate 10. The first electrode layer 23 includes at least one first electrode 231. The pixel definition layer 24 is disposed around the first electrode 231 to form a pixel opening. The light-emitting layer 25 is disposed in the pixel opening. The second electrode layer 26 is disposed on the light-emitting layer 25. The first electrode 231, the corresponding light-emitting layer 25, and the second electrode layer 26 form a pixel unit 201.

[0070] The bending tendency structure 50 is provided in the same layer as the flat layer 22 and is formed in the same patterning process as the flat layer 22. That is, in this embodiment, the bending tendency structure 50 and the flat layer 22 are formed through the same patterning process and are formed in the same layer. The specific patterning process can adopt a patterning process such as photolithography, and the specific selection can be based on the type of film material and the production process. By providing the bending tendency structure 50 in the same layer as the flat layer 22 and forming it through the same patterning process as the flat layer 22, the number of film layers will not be increased, which is conducive to the lightweight design of the display panel 100, and the manufacturing difficulty is low, saving production costs.

[0071] Among them, the first insulating layer 27 is arranged on the side of the second electrode layer 26 away from the light-emitting layer 25, and is used to protect the pixel unit 201 from etching during the preparation of the display panel 100. The first insulating layer 27 includes a non-conductive inorganic material. Specifically, the first insulating layer 27 includes an inorganic insulating material containing silicon, such as a SiNx-type inorganic material, where x is a non-zero natural number. The insulating layer covers the surface of the second electrode layer 26 and extends to the pixel definition layer 24 and covers the surface of the pixel definition layer 24. Furthermore, the display panel 100 also includes a second insulating layer 41, which is arranged on the side of the encapsulation layer 40 away from the flexible substrate 10. The second insulating layer 41 is a flexible insulating material to further encapsulate and protect the underlying film layer.

[0072] Please refer to Figure 7, which is a schematic cross-sectional view of the display panel provided in the second embodiment of the present application. Unlike the embodiment of Figure 2, in this embodiment, the planar layer 22 extends outward from the pixel island 20 region to the entire display area. The bend-prone structure 50 is disposed on the planar layer 22 and is co-located with the pixel definition layer 24, and is patterned together with the pixel definition layer 24. That is, in this embodiment, the bend-prone structure 50 can also be co-located with the pixel definition layer 24 and formed through the same patterning process as the pixel definition layer 24. Similarly, the specific patterning process can be photolithography or other processes, and the specific selection can be based on the film material type and production process. In this embodiment, by co-locating the bend-prone structure 50 with the pixel definition layer 24 and forming it in the same patterning process as the pixel definition layer 24, the bend-prone structure 50 and the pixel definition layer 24 can be produced using the same photomask, without increasing the photomask process, effectively saving production costs, and without increasing the number of film layers, which facilitates the lightweight and thin design of the display panel 100.

[0073] Please refer to Figures 8 and 9. Figure 8 is a schematic diagram of a cross-sectional structure of a display panel provided in the third embodiment of the present application, and Figure 9 is a schematic diagram of a cross-sectional structure of a display panel provided in the fourth embodiment of the present application. In the third and fourth embodiments, the pixel island 20 further includes a partition structure 28, which includes a conductive portion 281 and an overhang portion 282. The conductive portion 281 is disposed on the pixel definition layer 24 and surrounds the pixel opening. The conductive portion 281 is in contact with and connected to the second electrode layer 26 to electrically connect the second electrode layers 26 of adjacent pixel units 201 to each other. The overhang portion 282 is disposed on the conductive portion 281 and surrounds the pixel opening. The overhang portion 282 covers the conductive portion 281 and extends out of the conductive portion 281. The first insulating layer 27 is disposed on the side of the second electrode layer 26 away from the light-emitting layer 25, extends out of the pixel opening, and covers the overhang portion 282.

[0074] Specifically, in the partition structure 28, by providing a conductive portion 281 and making the conductive portion 281 contact and connect with the second electrode layer 26, the second electrode layers 26 of adjacent pixel units 201 are electrically connected to each other to form a whole-surface electrode, which is beneficial to the transmission of a common voltage and avoids display disorder caused by different potentials of the second electrode layer 26 of each pixel unit 201 in the pixel island 20; by providing an overhanging portion 282 and making the overhanging portion 282 cover the conductive portion 281 and extend out of the conductive portion 281, in the process of evaporating the luminescent material to form the luminescent layer 25, the overhanging portion 282 plays the same role as the mask plate, thereby replacing the mask plate without the need for mask plate evaporation, which can effectively improve the pixel aperture ratio and production cost.

[0075] As shown in FIG8 , in this embodiment, the bend-prone structure 50 is disposed on the same layer as the planar layer 22 and is formed in the same patterning process as the planar layer 22. Similar to the embodiment of FIG2 , in this embodiment, the bend-prone structure 50 is disposed on the same layer as the planar layer 22 and is formed in the same patterning process. This does not increase the number of film layers, facilitates a thinner and lighter design for the display panel 100, and reduces manufacturing difficulty, thereby saving production costs.

[0076] As shown in Figure 9 , in this embodiment, the planar layer 22 extends outward from the pixel island 20 region to the entire display area. The bend-prone structure 50 is disposed on the planar layer 22 and is co-located with the pixel definition layer 24, and is formed in the same patterning process as the pixel definition layer 24. Similar to the embodiment of Figure 7 , in this embodiment, the bend-prone structure 50 is co-located with the pixel definition layer 24 and is formed in the same patterning process. This allows the bend-prone structure 50 and the pixel definition layer 24 to be manufactured using the same photomask, eliminating the need for additional photomask manufacturing processes, effectively saving production costs, and not increasing the number of film layers, thereby facilitating a lightweight and thin design for the display panel 100.

[0077] 10 is a schematic diagram of a planar structure of a display panel according to a fifth embodiment of the present invention. In this embodiment, the bending structures 50 are disposed only on two opposite sides of the pixel island 20 along the first direction X, and the pixel bending structures 50 extend along the second direction Y.

[0078] It should be noted that, in specific applications, if the display panel 100 only requires bending in a single direction, the bending inclination structure 50 need only be provided in that direction, serving as the bending rotation axis between the pixel islands 20 when the display panel 100 is bent. Therefore, to accommodate such application scenarios, the display panel 100 provided in this embodiment has the bending inclination structures 50 provided only on opposite sides of the pixel islands 20 along the first direction X, and the bending inclination structures 50 extend along the second direction Y, allowing the display panel 100 to bend in the first direction X.

[0079] In this embodiment, the two ends of the bending tendency structure 50 can be flush with the opposite sides of the pixel island 20 along the second direction Y, or can slightly extend beyond the opposite sides of the pixel island 20 along the second direction Y to ensure the protection effect of the pixel island 20. The extension length of the bending tendency structure 50 can be set according to actual needs.

[0080] It should be noted that in the above embodiments of the present application, the pixel unit 201 is described as including an OLED light-emitting device. In other embodiments, the pixel unit 201 may also include other light-emitting devices, such as a light-emitting diode (LED), a sub-millimeter light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED).

[0081] Please refer to Figure 11, which is a schematic diagram of the structure of a display device provided in one embodiment of the present application. In this embodiment, a display device is provided, which includes a display panel 100. The specific structure and function of the display panel 100 are the same or similar to those of the display panel 100 involved in the above-mentioned embodiment, and can achieve the same technical effects. For details, please refer to the detailed description above and will not be repeated here. Specifically, the display device can be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an electronic paper, a television, a car display screen, etc.

[0082] The above is only an implementation method of the present application and does not limit the scope of patent protection of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present application.

Claims

1. A display panel, comprising: A flexible substrate; A plurality of pixel islands disposed on one side of the flexible substrate, the plurality of pixel islands being arranged in a matrix and spaced apart, each pixel island including at least one pixel unit; A connecting portion stretchably connected between two adjacent pixel islands; An encapsulation layer disposed on the side of the pixel island and the connecting portion away from the flexible substrate for encapsulating the pixel island and the connecting portion; Wherein, the display panel further includes: a bending tendency structure spaced around the pixel island and encapsulated by the encapsulation layer; the bending tendency structure is strip-shaped and the extending direction intersects with the stretching direction of the connecting portion, and the Young's modulus of the bending tendency structure is greater than that of the encapsulation layer, so that the display panel bends at the bending tendency structure when bent.

2. The display panel according to claim 1, wherein, The connecting portion includes a signal line electrically connected between adjacent pixel islands; The bending tendency structure is disposed between adjacent pixel islands, intersects with the connecting portion, and the bending tendency structure has a channel at the portion intersecting with the connecting portion, and the signal line passes through the channel.

3. The display panel according to claim 2, wherein, The radial dimension of the channel is greater than the width of the connecting portion; The bending tendency structure is disconnected at the position of the connecting portion to form the channel, so that the signal line passes through the channel; or, The bending tendency structure is provided with a through hole at the position of the connecting portion to form the channel, so that the signal line passes through the channel.

4. The display panel according to claim 2, wherein, The length of the signal line is greater than the pitch between adjacent pixel islands, and the signal line is arranged in a serpentine trace.

5. The display panel according to claim 1, wherein, The surface of the bending tendency structure away from the flexible substrate is an arc surface, and / or the end of the bending tendency structure is arc-shaped or rounded.

6. The display panel according to claim 5, wherein, The bending tendency structure is disconnected at the position of the connecting portion, and a first portion and a second portion are respectively formed on opposite sides of the connecting portion, and the channel is formed between the first portion and the second portion; the opposite two ends of the first portion are arc-shaped or rounded, and the opposite two ends of the second portion are arc-shaped or rounded.

7. The display panel according to claim 1, wherein, The pixel island includes a circuit layer, a planarization layer, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, and a first insulating layer sequentially stacked in a direction away from the flexible substrate; Wherein, the first electrode layer includes at least one first electrode, the pixel definition layer surrounds the first electrode to form a pixel opening, the light-emitting layer is disposed in the pixel opening, the second electrode layer is disposed on the light-emitting layer, and the first electrode forms the pixel unit with the corresponding light-emitting layer and the second electrode layer.

8. The display panel according to claim 7, wherein, The bending tendency structure is disposed on the same layer as the planarization layer and formed in the same patterning process as the planarization layer; or, The planarization layer extends from the pixel island region to the entire display area, and the bending tendency structure is disposed on the planarization layer and on the same layer as the pixel definition layer and formed in the same patterning process as the pixel definition layer.

9. The display panel according to claim 7, wherein, The first insulating layer covers the surface of the second electrode layer and extends to the pixel defining layer and covers the surface of the pixel defining layer; the first insulating layer includes a non-conductive inorganic material; the display panel further includes a second insulating layer disposed on a side of the encapsulation layer away from the flexible substrate, and the second insulating layer is a flexible insulating material.

10. The display panel according to claim 7, wherein, The pixel island further includes a partition structure, and the partition structure includes a conductive portion and a hanging portion; The conductive portion is disposed on the pixel defining layer and surrounds the pixel opening, and the conductive portion is in contact connection with the second electrode layer so that the second electrode layers of adjacent pixel units are electrically connected to each other; The hanging portion is disposed on the conductive portion and surrounds the pixel opening, and the hanging portion covers the conductive portion and extends out of the conductive portion; The first insulating layer is disposed on a side of the second electrode layer away from the light-emitting layer, and extends out of the pixel opening and covers the hanging portion.

11. The display panel according to claim 10, wherein, The bending tendency structure is disposed on the same layer as the flat layer and is formed in the same patterning process as the flat layer; or, The flat layer extends from the pixel island region to the entire display area, and the bending tendency structure is disposed on the flat layer and is disposed on the same layer as the pixel defining layer and is formed in the same patterning process as the pixel defining layer.

12. The display panel according to claim 1, wherein, The bending tendency structure is disposed on opposite sides of the pixel island in a first direction, and / or the bending tendency structure is disposed on opposite sides of the pixel island in a second direction; wherein, the row direction of the matrix formed by the pixel islands is the first direction, and the column direction is the second direction.

13. The display panel according to claim 12, wherein, The bending tendency structure includes a first bending tendency structure and a second bending tendency structure. The first bending tendency structure is disposed on opposite sides of the pixel island in the first direction and extends in the second direction, and the second bending tendency structure is disposed on opposite sides of the pixel island in the second direction and extends in the first direction; Wherein, the distance between the first bending tendency structures on opposite sides of the pixel island is a first distance, and the distance between the second bending tendency structures on opposite sides of the pixel island is a second distance; the length of the first bending tendency structure is less than the second distance, and the length of the second bending tendency structure is less than the first distance.

14. The display panel according to claim 12, wherein, The length of the first bending tendency structure is equal to the size of the pixel island in the second direction, and the length of the second bending tendency structure is equal to the size of the pixel island in the first reverse direction.

15. A display device, wherein, A display panel comprising the display panel according to claim 1.

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