CN111863901A

CN111863901A - Stretchable display panel and display device

Info

Publication number: CN111863901A
Application number: CN202010705867.2A
Authority: CN
Inventors: 张骏
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2020-10-30
Anticipated expiration: 2040-07-21
Also published as: CN111863901B

Abstract

The invention discloses a stretchable display panel and a display device, belonging to the technical field of display, wherein the stretchable display panel comprises a plurality of display islands and a plurality of stretching bridges for connecting the display islands; the stretchable display panel further comprises a substrate and at least one organic layer, wherein the organic layer is positioned on one side of the substrate close to the light-emitting surface of the stretchable display panel; an organic layer is provided with an opening at the connecting position of the display island and the stretching bridge; the opening penetrates through at least one organic layer along the direction perpendicular to the light-emitting surface of the stretchable display panel. The display device comprises the stretchable display panel. According to the invention, in the stretching process of the stretchable display panel, the stretching stress generated by the stretching bridge cannot be transferred to the organic layer in the display island range through the organic layer in the stretching bridge range, so that the film layer stripping phenomenon in the display island range during stretching can be avoided, the display effect of the display island can be improved, and the overall reliability of the stretchable display panel can be improved.

Description

Stretchable display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a stretchable display panel and a display device.

Background

With the development of the information-oriented society, various types of flat panel display devices, such as liquid crystal display devices, plasma display devices, and electrophoretic display devices, have appeared. However, the conventional display device is made of rigid materials such as glass, and the size and the shape of the display device are fixed after being produced, so that the display device cannot be used in multiple occasions and complex environments. In order to meet more demands of users for new functions, efforts have been made to develop new forms of display devices, such as stretchable display devices, that are desired to form a display device that can have properties of extending or contracting as well as bending when it is pulled. And the stretchable display device can still maintain the image quality under the condition of stretching, and can be widely used in televisions, personal computers, laptop computers, tablet PCs, mobile phones, curved televisions, wearable devices and the like.

In the stretchable display panel in the prior art, a plurality of display portions and a stretching portion connecting the display portions are generally arranged, and in the stretching process of the stretchable display panel, in order to maintain the display stability of the display portions, it is generally required that the display portions are not strained as much as possible, but main strain occurs in the stretching portion, so that tensile stress generated by the stretching portion during stretching is easily transmitted to the display portions along some organic film layer of the stretching portion, and thus, a risk of film peeling (peeling) is easily generated in the display portions, and the display effect and reliability are affected.

Therefore, it is an urgent need to solve the technical problem of the art to provide a stretchable display panel and a display device capable of preventing a film peeling phenomenon from occurring in a display portion during stretching and improving display effect and reliability.

Disclosure of Invention

In view of the above, the present invention provides a stretchable display panel and a display device, so as to solve the problem that the stretchable display device in the prior art is prone to generate a risk of film peeling on the display portion, which affects the display effect and reliability.

The invention discloses a stretchable display panel, which comprises a plurality of display islands arranged in an array manner and a plurality of stretching bridges for connecting two adjacent display islands; the stretchable display panel further comprises a substrate and at least one organic layer, wherein the organic layer is positioned on one side of the substrate close to the light-emitting surface of the stretchable display panel; an organic layer is provided with an opening at the connecting position of the display island and the stretching bridge; the opening penetrates through at least one organic layer along the direction perpendicular to the light-emitting surface of the stretchable display panel.

Based on the same inventive concept, the invention also discloses a display device which comprises the stretchable display panel.

Compared with the prior art, the stretchable display panel and the display device provided by the invention at least realize the following beneficial effects:

the stretchable display panel is arranged at the connecting position of the display island and the stretching bridge, namely the connecting end of the stretching bridge and the display island connected with the stretching bridge, and the connecting end of the display island and the stretching bridge connected with the display island are close to each other, the organic layer is provided with an opening, the organic layer provided with the opening can be a planarization layer or a pixel definition layer or a protective layer manufactured on a substrate or a film layer manufactured by organic materials in any other display panel, and the opening at least penetrates through one organic layer along the direction vertical to the light-emitting surface of the stretchable display panel, so that the stretching stress generated by the stretching bridge can not be transmitted to the organic layer in the display island range through the organic layer in the stretching bridge range in the stretching process of the stretchable display panel, the film layer stripping phenomenon in the display island range during stretching can be avoided, and the display effect of the display island can be improved, the overall reliability of the stretchable panel is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic plan view illustrating a stretchable display panel according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view illustrating a stretchable display panel according to the related art;

FIG. 4 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 5 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 6 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 7 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 8 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 9 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 10 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 11 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 12 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 13 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 14 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 15 is a schematic sectional view taken along line B-B' of FIG. 14;

FIG. 16 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 17 is a schematic diagram illustrating a planar structure of another stretchable display panel according to an embodiment of the present invention;

FIG. 18 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

FIG. 19 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 20 is a schematic plan view of a display device according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic plan view illustrating a stretchable display panel according to an embodiment of the present invention, fig. 2 is a schematic cross-sectional view taken along a direction a-a' in fig. 1, and a stretchable display panel 000 according to the embodiment includes a plurality of display islands 10 arranged in an array and a plurality of stretching bridges 20 connecting two adjacent display islands 10;

the stretchable display panel further comprises a substrate 30 and at least one organic layer 40, wherein the organic layer 40 is positioned on one side of the substrate 30 close to the light-emitting surface of the stretchable display panel 000;

the organic layer 40 is provided with an opening 400 at the position where the display island 10 is connected to the tensile bridge 20; the opening 400 penetrates at least one organic layer 40 along a direction Z perpendicular to the light emitting surface of the stretchable display panel 000.

Specifically, the stretchable display panel 000 of the present embodiment includes a plurality of display islands 10 arranged in an array and a plurality of stretching bridges 20 connected between the display islands 10, where the display islands 10 are used to configure display devices to implement a display function, and the stretching bridges 20 are used to implement a stretching function of the stretchable display panel 000. Alternatively, a stretching bridge 20 is disposed between any two adjacent display islands 10, the display islands 10 may be in a separate structure, one end of the stretching bridge 20 is connected to one display island 10, and the other end of the stretching bridge 20 is connected to another display island 10, so as to connect the two adjacent display islands 10, that is, the two adjacent display islands 10 may be spaced apart from each other by a gap or a seam between the two adjacent display islands 10, and the two adjacent display islands 10 spaced apart from each other are connected by the stretching bridge 20. It is understood that the connection position of the display island 10 and the tensile bridge 20 of the present embodiment refers to an end position (M position in fig. 2) at which each tensile bridge 20 is connected to the display island 10 to which it is connected.

The stretchable display panel 000 of the present embodiment further includes a substrate 30 and at least one organic layer 40 located on a side of the substrate 30 close to the light exit surface of the stretchable display panel 000 (it is understood that the light exit surface of the stretchable display panel 000 of the present embodiment is understood to be the light exit surface of the stretchable display panel 000 above in the geometric figure of fig. 2). In the at least one organic layer 40 of the present embodiment, which is located on the side of the substrate 30 close to the light emitting surface of the stretchable display panel 000, the organic layer 40 may be a planarization layer, a pixel definition layer, a protective layer, or a film made of organic materials in any other display panel and formed on the substrate 30. It should be noted that, in fig. 2 of this embodiment, the technical solution of this embodiment is exemplarily illustrated by taking the organic layer 40 as a pixel defining layer, and in specific implementation, the organic layer 40 may also be a film layer made of other organic materials.

Referring to fig. 3, fig. 3 is a schematic partial cross-sectional view of a stretchable display panel in the related art, in a film structure of a stretchable display panel 000 ' in the related art, except for an organic layer that needs to be patterned, such as a pixel definition layer PDL ', that needs to be patterned for disposing a light emitting device (not shown in fig. 3), the rest of the organic layers are all laid out as a whole layer, and particularly, all of the connection positions (M ' positions in fig. 3) of the stretching bridge 20 ' and the display portion 10 ' are all laid out as a whole organic film. However, in the stretching process of the stretchable display panel 000 ', in order to generally maintain the display stability of the light emitting device disposed on the display portion 10 ', it is required that the display portion 10 ' is not strained as much as possible, and the main strain in the stretching process occurs in the range of the stretching bridge 20 ', so that the stretching stress generated by the stretching bridge 20 ' when the stretchable display panel 000 ' is stretched is easily transmitted into the display portion 10 ' along the organic layer 40 ' that is entirely laid on a certain layer above the substrate 30 ' (or entirely laid at the connection position of the stretching bridge 20 ' and the display portion 10 '), thereby easily causing a risk of film peeling (peeling) in the range of the display portion 10 ', which affects the display effect of the light emitting device of the display portion 10 ' and the reliability of the entire panel.

In order to solve the above problem, the organic layer 40 is provided with an opening 400 at a position where the display island 10 and the stretching bridge 20 are connected, that is, a position where an end of the stretching bridge 20 connected to the display island 10 connected to the stretching bridge 20 is close to an end of the display island 10 connected to the stretching bridge 20 connected to the display island 10, and an end of the display island 10 connected to the stretching bridge 20 connected to the display island 20 are close to each other, optionally, the organic layer provided with the opening 400 may be a planarization layer or a pixel definition layer or a protective layer fabricated on the substrate 30 or a film made of an organic material in any other display panel, and the opening 400 penetrates at least one organic layer 40 along a direction Z perpendicular to a light emitting surface of the stretchable display panel 000, so that a tensile stress generated by the stretching bridge 20 during a stretching process of the display panel 000 may not be transmitted to the organic layer 40 within the display island 10 through the organic layer 40 within the stretching bridge 20, and thus a, it is advantageous to improve the display effect of the display island 10 and to improve the overall reliability of the stretchable panel 000.

It should be noted that fig. 2 of the present embodiment is only a schematic cross-sectional view illustrating a part of the film layers of the display islands 10 and the stretching bridges 20, the structure of the film layer of the stretchable display panel 000 is not limited thereto, as shown in fig. 4, fig. 4 is another schematic cross-sectional view along the direction of a-a' in fig. 1, alternatively, as shown in fig. 4, the structure of the film layer of the stretchable display panel 000 may further include a buffer layer 50 in the range of the display islands 10, an array layer (which may include a plurality of thin film transistors, not shown), respective insulating layers (not shown) between the array layers, a passivation layer 60, a planarization layer 70, a light emitting device layer 80, a pixel defining layer 90, etc., a plurality of stacked organic film layers in the range of the stretching bridges 20, a conductive film layer (for electrically connecting the light emitting devices of two adjacent display islands; the light emitting device layer 80 may include a light emitting device and a driving circuit (not shown) connected to the light emitting device, and the light emitting device may include light emitting diodes with different light emitting colors or organic light emitting diodes, so as to implement the display function of the stretchable display panel; the stretchable display panel 000 may further include a gate driving circuit, and may also be connected with a driving chip, and the specific structure of the stretchable display panel 000 may be understood with reference to the structure of the stretchable display panel in the related art, which is not described herein again. The organic layer 40 of the present embodiment may be the pixel defining layer 90, and the opening 400 penetrates through at least one organic layer 40 along the direction Z perpendicular to the light emitting surface E of the stretchable display panel 000, that is, the opening 400 penetrates through at least the pixel defining layer 90.

Optionally, the stretching bridge 20 in this embodiment is a serpentine bridge, that is, a wave-shaped bridge, in an unstretched state, the bending state of the stretching bridge 20 is a serpentine, when the stretchable display panel 000 is unstretched, the stretching bridge 20 naturally contracts into a serpentine curled shape, when the stretchable display panel 000 is stretched, the stretching bridge 20 straightens, can be stretched into an approximately linear state at maximum, and drives the display islands 10 to move, so that the gap between the display islands 10 is increased, but the size and shape of each display island 10 do not change, so as to ensure that the display devices and the like on the display islands 10 are not damaged. It is understood that the present embodiment is described by taking the display island 10 as a square structure, but the present invention is not limited thereto, and in other embodiments, the display island 10 may also have a circular or oval structure. The shape of the tension bridge 20 of the present embodiment is not limited to the serpentine bridge shown in fig. 1, and in other embodiments, the tension bridge 20 may have a spring-like or wave-like shape.

In some alternative embodiments, please continue to refer to fig. 1 and fig. 4 in combination, in this embodiment, the stretchable display panel 000 further includes a conductive layer 100, the conductive layer 100 is used to fabricate a conductive structure (e.g., a thin film transistor array of the display islands 10, etc.) of the stretchable display panel 000, the conductive layer 100 includes a plurality of signal lines 1001, and the display islands 10 are electrically connected to each other through the signal lines 1001.

The present embodiment further explains that the stretchable display panel 000 further includes a conductive layer 100, optionally, the conductive layer 100 may be located on one side of the substrate 30 close to the light emitting surface E of the stretchable display panel 000, the conductive layer 100 may be a conductive metal film layer used for manufacturing a gate line in an array layer, a conductive metal film layer used for manufacturing a source drain in the array layer, or a conductive metal film layer used for manufacturing a power signal line in the display panel, the signal line 1001 may be any one or more of a gate line, a data line, and a power signal line, and the signal line 1001 is used for transmitting an electrical signal between the display islands 10, which is not specifically limited in this embodiment. In fig. 4, the conductive layer 100 is illustrated as being located between the buffer layer 50 and the passivation layer 60, and it is understood that the conductive layer 100 may be any metal film layer in the array layer, and the conductive layer 100 may also be a conductive film layer at other positions, which is not described in detail in this embodiment.

In some alternative embodiments, please continue to refer to fig. 1 and 4 in combination, in this embodiment, the at least one organic layer 40 includes a first organic layer 401 and a second organic layer 402, the first organic layer 401 is located on a side of the conductive layer 100 close to the substrate 30, and the second organic layer 402 is located on a side of the conductive layer 100 away from the substrate 30; the second organic layer 402 is provided with a first opening 4021 through the second organic layer 402 at a location M where the display island 10 is connected to the tensile bridge 20.

This embodiment further explains that the number of the at least one organic layer 40 on the side of the substrate 30 close to the light-emitting surface of the stretchable display panel 000 may include two layers, i.e. a first organic layer 401 and a second organic layer 402, optionally, the first organic layer 401 is on the side of the conductive layer 100 close to the substrate 30, and the second organic layer 402 is on the side of the conductive layer 100 away from the substrate 30, i.e. the first organic layer 401 and the second organic layer 402 are on the upper and lower sides of the conductive layer 100, for example, the first organic layer 401 may be a Bend Protective Layer (BPL) disposed in the range of the stretching bridge 20, which extends to the partial range of the display island 10 through the connection position M between the display island 10 and the stretching bridge 20, and the Bend protective layer is generally used to protect the stretching bridge 20 from external force, impact, subsequent manufacturing processes, and the like. Since the display island 10 does not need a good tensile deformation amount, the Bending Protection Layer (BPL) may be hollowed out at other positions of the display island 10 to fill the remaining film layers (e.g., the buffer layer 50 within the display island 10); the second organic layer 402 may be the planarization layer 70 or the pixel defining layer 90 within the stretch bridge 20 and the display island 10 (the second organic layer 402 is exemplarily illustrated as the pixel defining layer 90 in fig. 4).

In this embodiment, the organic layer 40 is provided with an opening 400, the opening 400 penetrates at least one organic layer 40 along a direction Z perpendicular to a light emitting surface of the stretchable display panel 000, the organic layer 40 is the second organic layer 402, the opening 400 opened in the organic layer 40 is the first opening 4021 penetrating the second organic layer 402 and arranged on the second organic layer 402 at a connecting position M between the display island 10 and the stretching bridge 20, the opening 400 (the first opening 4021) is opened through one of the organic layers 40 (fig. 4 takes the pixel defining layer 90 as an example) above the conductive layer 100, during stretching of the stretchable display panel 000, due to the arrangement of the first opening 4021 arranged on the pixel defining layer 90, a tensile stress generated by the stretching bridge 20 is not transmitted to the pixel defining layer 90 within the display island 10 through the pixel defining layer 90 within the stretching bridge 20, and thus a film peeling phenomenon within the display island 10 during stretching can be avoided as much as possible, it is advantageous to improve the display effect of the display island 10 and to improve the overall reliability of the stretchable panel 000.

In some alternative embodiments, please refer to fig. 1 and fig. 5 in combination, fig. 5 is another schematic cross-sectional structure diagram along the direction of a-a' in fig. 1, in this embodiment, in a direction along which the substrate 30 points to the light emitting surface E of the stretchable display panel 000, within the display island 10, the stretchable display panel 000 sequentially includes the buffer layer 50, the source and drain metal layer M2, the passivation layer 60, the planarization layer 70, the transition metal layer M3, and the pixel defining layer 90.

The present embodiment further explains that the stretchable display panel 000 may further include a buffer layer 50, an array layer 110, a passivation layer 60, a planarization layer 70, a transition metal layer M3, and a pixel defining layer 90, which are sequentially located on one side of the substrate 30 close to the light emitting surface E of the stretchable display panel 000, where the array layer 110 is used to distribute a thin film transistor array, and the array layer 110 may include a source and drain metal layer M2 used to arrange a source and drain of a thin film transistor, a data line, and the like. The plurality of thin film transistors of the array layer 110 may control the light emitting device 801 of the light emitting device layer 80 on the display island 10 to emit light as a switching control transistor, and an electrode (which may be an anode) of the light emitting device 801 is electrically connected to a source electrode or a drain electrode of the thin film transistor of the array layer 110 through a via hole. The passivation layer 60 is located on the source-drain metal layer M2, and the passivation layer 60 may be formed of an inorganic material such as silicon oxide or silicon nitride. The planarization layer 70 is located on the passivation layer 60, and the material of the planarization layer 70 includes organic materials such as acryl, polyimide, or benzocyclobutene. The transition metal layer M3 is used to provide a conductive structure in the stretchable display panel 000, such as a certain electrode of the light emitting device 801, a power signal line, and the like, which is beneficial to increasing the pixel density and further improving the display quality. A pixel defining layer 90 is positioned on the planarization layer 70 and covers an edge of the anode, and the pixel defining layer 90 may be formed of an organic material such as polyimide, polyamide, benzocyclobutene, acryl resin, or phenol resin.

In this embodiment, the opening 400 penetrates through at least one organic layer 40 along a direction Z perpendicular to the light emitting surface of the stretchable display panel 000, the organic layer 40 is the second organic layer 402, and at a connection position M between the display island 10 and the stretching bridge 20, the opening 400 formed in the organic layer 40 is the first opening 4021 formed in the second organic layer 402 and penetrating through the second organic layer 402, fig. 5 of this embodiment illustrates an opening 400 (the first opening 4021) formed in the pixel definition layer 90, in the stretching process of the stretchable display panel 000, due to the arrangement of the first opening 4021 formed in the pixel definition layer 90, the stretching stress generated by the stretching bridge 20 is not transmitted to the pixel definition layer 90 in the display island 10 through the pixel definition layer 90 in the stretching bridge 20, so that the film peeling phenomenon in the display island 10 during stretching can be avoided as much as possible, which is beneficial to improve the display effect of the display island 10, the overall reliability of the stretchable panel 000 is improved.

It should be noted that this embodiment only schematically illustrates the film structure of the stretchable display panel 000, and in particular, the film structure of the stretchable display panel 000 may be, but is not limited to, that shown in fig. 5.

In some alternative embodiments, with continuing reference to fig. 1 and fig. 6, fig. 6 is a schematic cross-sectional view taken along the direction a-a' in fig. 1, in which the conductive layer 100 is disposed at the same layer as the source/drain metal layer M2, and the second organic layer 402 is disposed at the same layer as the planarization layer 70.

This embodiment further explains that in the stretchable display panel 000, the conductive layer 100 located between the first organic layer 401 and the second organic layer 402 is disposed in the same layer as the source/drain metal layer M2, that is, the source/drain metal layer M2 is used as the conductive layer 100, in this case, the first organic layer 401 may be a Bending Protective Layer (BPL) disposed in the range of the stretching bridge 20, and the bending protective layer generally protects the stretching bridge 20 from external force, impact, and subsequent manufacturing processes, and extends into a partial range of the display island 10 through the connection position M between the display island 10 and the stretching bridge 20. Since the display island 10 does not require a good amount of tensile deformation, the Bending Protection Layer (BPL) may be hollowed out at other positions of the display island 10 to fill the remaining film layers (e.g., the buffer layer 50 within the display island 10). And the second organic layer 402 is disposed in the same layer as the planarization layer 70, i.e., the planarization layer 70 may serve as the second organic layer 402. In this embodiment, the organic layer 40 is provided with an opening 400, the opening 400 penetrates at least one organic layer 40 along a direction Z perpendicular to a light emitting surface of the stretchable display panel 000, the organic layer 40 is the second organic layer 402, the opening 400 opened in the organic layer 40 is the first opening 4021 penetrating the second organic layer 402 and arranged on the second organic layer 402 at a connection position M between the display island 10 and the stretching bridge 20, the opening 400 (the first opening 4021) is opened in the planarization layer 70 above the conductive layer 100, during stretching of the stretchable display panel 000, due to the arrangement of the first opening 4021 opened in the planarization layer 70, a tensile stress generated by the stretching bridge 20 is not transmitted to the planarization layer 70 within the display island 10 through the planarization layer 70 within the stretching bridge 20, so that a film peeling phenomenon within the display island 10 during stretching can be avoided as much as possible, which is beneficial to improve a display effect of the display island 10, the overall reliability of the stretchable panel 000 is improved.

In some alternative embodiments, with continued reference to fig. 1 and fig. 6, the at least one organic layer 40 of the stretchable display panel 000 of the present embodiment further includes a third organic layer 403, the third organic layer 403 is disposed on a side of the second organic layer 402 away from the substrate 30;

the third organic layer 403 is provided with a third opening 4031 penetrating the third organic layer 403;

the third organic layer 403 covers the second organic layer 402, and a portion of the third organic layer 403 is attached to the sidewall of the first opening 4021 to form a third opening 4031.

This embodiment further explains that the conductive layer 100 located between the first organic layer 401 and the second organic layer 402 is disposed in the same layer as the source/drain metal layer M2, the first organic layer 401 may be a curved protection layer disposed in the range of the stretching bridge 20 and extends to a partial range of the display island 10 through the connecting position M between the display island 10 and the stretching bridge 20, when the second organic layer 402 is disposed in the same layer as the planarization layer 70, the present embodiment may further include a third organic layer 403 located on the side of the second organic layer 402 away from the substrate 30, in this case, the third organic layer 403 may be disposed in the same layer as the pixel defining layer 90, that is, the pixel defining layer 90 serves as the third organic layer, and the third organic layer 403 is provided with a third opening 4031 penetrating through the third organic layer 403, that is, the pixel defining layer 90 is provided with a third opening 4031 penetrating through the third organic layer 403. In this embodiment, the two organic layers 40 are both provided with openings 400, i.e. at the connecting positions M of the display islands 10 and the stretching bridges 20, along the direction Z perpendicular to the light-emitting surface of the stretchable display panel 000, by forming the first opening 4021 in the planarization layer 70 and forming the third opening 4031 in the pixel defining layer 90 over the conductive layer 100, in the stretching process of the stretchable display panel 000, due to the arrangement of the first opening 4021 opened in the planarization layer 70 and the third opening 4031 opened in the pixel defining layer 90, it is ensured that the tensile stress occurring in the tensile bridge 20 is not transmitted to the display island 10 through either the planarization layer 70 or the pixel definition layer 90 within the tensile bridge 20, further, the film peeling phenomenon in the display island 10 range during stretching can be further avoided, which is further beneficial to improving the display effect of the display island 10 and improving the overall reliability of the stretchable panel 000.

It is to be understood that, as shown in fig. 7, fig. 7 is another schematic cross-sectional structure view along the direction a-a' in fig. 1, because the planarization layer 70 and the pixel definition layer 90 above the conductive layer 100 (the source/drain metal layer M2) both have an opening 400 at the connection position M between the display island 10 and the tensile bridge 20, the third organic layer 403 covers the second organic layer 402 (the pixel definition layer 90 covers the planarization layer 70), a portion of the pixel definition layer 90 may be attached to the side wall of the first opening 4021 formed in the planarization layer 70 to form the third opening 4031 of the pixel definition layer 90, and at this time, a portion of the third organic layer 403 (the pixel definition layer 90) is in direct contact with the conductive layer 100 below in the opening 400 (as shown in fig. 7), that is, the third opening 4031 penetrates through the third organic layer 403, and the first opening 4021 may penetrate through the second organic layer 402 and other film layers below the second organic layer 402, the third organic layer 403 covers the second organic layer 402, and the third organic layer 403 (pixel defining layer 90) is in direct contact with the lower conductive layer 100 (source/drain metal layer M2) in the opening 400, so that the upper organic layer can further cover the lower organic layer boundary, and the boundary can be more smoothly continuous.

Optionally, with continued reference to fig. 1 and 6, the aperture D1 of the first opening 4021 is larger than the aperture D3 of the third opening 4031; the aperture D1 of the first opening 4021 is greater than or equal to 15 μm, and the aperture D3 of the third opening 4031 is greater than or equal to 5 μm.

This embodiment further explains that by setting the aperture D1 of the first opening 4021 of the second organic layer 402 to be larger than the aperture D3 of the third opening 4031 of the third organic layer 403, the third organic layer 403 positioned above can cover the boundary of the first opening 4021 of the second organic layer 402 below, the boundary of the third opening 4031 of the third organic layer 403 can be formed more gradually and continuously, and the third organic layer 403 can be manufactured with better coating and dividing effects.

Optionally, the aperture D1 of the first opening 4021 may be set to be greater than or equal to 15 μm, and the aperture D3 of the third opening 4031 may be set to be greater than or equal to 5 μm, so that the aperture D1 of the first opening 4021 of the second organic layer 402 may be greater than the aperture D3 of the third opening 4031 of the third organic layer 403, and the third organic layer 403 may be ensured to have better cladding and dividing effects, and at the same time, it may be avoided that the aperture of the opening 400 is too small to ensure that the tensile stress generated by the tensile bridge 20 is not transmitted to the display island 10 through any of the planarization layer 70 and the pixel definition layer 90 in the range of the tensile bridge 20, which is further beneficial to improving the reliability of the entire panel.

In some alternative embodiments, please refer to fig. 1 and 8 in combination, fig. 8 is another cross-sectional structure diagram along the direction of a-a' in fig. 1, in which the conductive layer 100 and the transition metal layer M3 are disposed at the same layer, the first organic layer 401 and the planarization layer 70 are disposed at the same layer, and the second organic layer 402 and the pixel defining layer 90 are disposed at the same layer.

This embodiment further illustrates that in the stretchable display panel 000, the conductive layer 100 between the first organic layer 401 and the second organic layer 402 is disposed in the same layer as the transition metal layer M3, i.e., the transition metal layer M3 is used as the conductive layer 100, in this case, the first organic layer 401 may be disposed in the same layer as the planarization layer 70, and the second organic layer 402 is disposed in the same layer as the pixel defining layer 90, i.e., the planarization layer 70 may be used as the first organic layer 401, and the pixel defining layer 90 may be used as the second organic layer 402. In this embodiment, the organic layer 40 is provided with an opening 400, the opening 400 penetrates at least one organic layer 40 along a direction Z perpendicular to a light emitting surface of the stretchable display panel 000, the organic layer 40 is the second organic layer 402, the opening 400 opened in the organic layer 40 is the first opening 4021 penetrating the second organic layer 402 and disposed in the second organic layer 402 at a connection position M between the display island 10 and the stretching bridge 20, the opening 400 (the first opening 4021) is opened in the pixel definition layer 90 above the transition metal layer M3, during stretching of the stretchable display panel 000, due to the arrangement of the first opening 4021 disposed in the pixel definition layer 90, a tensile stress generated by the stretching bridge 20 is not transmitted to the pixel definition layer 90 within the display island 10 through the pixel definition layer 90 within the stretching bridge 20, so as to avoid a film peeling phenomenon as much as possible during stretching within the display island 10, it is advantageous to improve the display effect of the display island 10 and to improve the overall reliability of the stretchable panel 000.

In some alternative embodiments, referring to fig. 1 and fig. 9 in combination, fig. 9 is another schematic cross-sectional view taken along the direction a-a' in fig. 1, in this embodiment, at the connecting position M between the display island 10 and the tensile bridge 20, the first organic layer 401 has a second opening 4011 penetrating through the first organic layer 401;

the conductive layer 100 covers the first organic layer 401, and a portion of the conductive layer 100 is filled in the second opening 4011.

The present embodiment further explains that the first organic layer 401 located on one side of the conductive layer 100 close to the substrate 30 may also be provided with a second opening 4011 penetrating through the first organic layer 401, wherein the conductive layer 100 above the first organic layer 401 covers the first organic layer 401, and the second opening 4011 may be filled in the second opening 4011, so as to facilitate increasing the attaching area between the conductive layer 100 and a film layer below the first organic layer 401, and avoid the risk of peeling off the conductive layer 100. Optionally, when the conductive layer 100 and the source/drain metal layer M2 are disposed on the same layer, the first organic layer 401 may be a curved protection layer disposed in the range of the stretching bridge 20, the second organic layer 402 may be the planarization layer 70, and the third organic layer 403 may be the pixel defining layer 90; when the conductive layer 100 and the transition metal layer M3 are disposed on the same layer, the first organic layer 401 may be the planarization layer 70, the second organic layer 402 may be the pixel defining layer 90, and the third organic layer 403 may be an organic material layer of the encapsulation layer (not shown).

In this embodiment, the second organic layer 402 located above the conductive layer 100 and the first organic layer 401 located below the conductive layer 100 are both provided with the opening 400, that is, at the connection position M between the display island 10 and the stretching bridge 20, the second organic layer 402 is provided with the first opening 4021 penetrating through the second organic layer 402, the first organic layer 401 is provided with the second opening 4011 penetrating through the first organic layer 401, so as to further ensure that the openings 400 are provided in each organic layer 40 at the connection position M between the display island 10 and the stretching bridge 20, in the stretching process of the stretchable display panel 000, it is further ensured that the stretching stress generated by the stretching bridge 20 is not transmitted to the display island 10, and further, the film peeling phenomenon generated in the display island 10 during stretching can be further avoided, which is beneficial to improving the display effect of the display island 10, and further improving the overall reliability of the stretchable panel 000.

Optionally, with continuing reference to fig. 1 and fig. 9, in the present embodiment, while the second organic layer 402 above the conductive layer 100 and the first organic layer 401 below the conductive layer 100 are both provided with the opening 400, the third organic layer 403 on the side of the second organic layer 402 away from the first organic layer 401 may also be provided with the third opening 4031, that is, the opening 400 may be provided in all the organic layers 40 at the connection position M between the display island 10 and the stretching bridge 20, which is beneficial to avoiding the possibility that the stretching stress generated by any stretching bridge 20 is not transmitted to the display island 10, and ensuring the display effect of the display island 10 and the overall reliability of the stretchable panel 000.

Optionally, with continuing reference to fig. 1 and fig. 9, in this embodiment, the aperture D2 of the second opening 4011 is larger than the aperture D1 of the first opening 4021, and the aperture D1 of the first opening 4021 is larger than the aperture D3 of the third opening 4031, so that the second organic layer 402 located above can cover the boundary of the second opening 4011 of the first organic layer 401 below, and the third organic layer 403 located above can cover the boundary of the first opening 4021 of the second organic layer 402 below, so that the boundary of the first opening 4021 of the second organic layer 402 and the boundary of the third opening 4031 of the third organic layer 403 formed above the first organic layer 401 are more gradually continuous, and the second organic layer 402 and the third organic layer 403 are ensured to have better encapsulation and segmentation effects.

In some alternative embodiments, please refer to fig. 10, fig. 10 is a schematic plan view illustrating another stretchable display panel according to an embodiment of the present invention, in which the opening 400 is disposed around the display island 10.

This embodiment further illustrates that in the structure of a plurality of display islands 10 arranged in an array and a plurality of tensile bridges 20 connecting two adjacent display islands 10 of the stretchable display panel 000, the openings 400 opened in the organic layer 40 are disposed around the display islands 10, that is, the orthographic projection of the opening 400 opened in the organic layer 40 onto the substrate 30 may be a structure disposed around the display island 10, the opening 400 opened in the organic layer 40 is opened not only at the connecting position M of the display island 10 and the tensile bridge 20 but also around the display island 10, thereby, it is possible to ensure that the tensile stress generated from the tensile bridge 20 is not transferred to the range of the display islands 10 through the organic layer 40 in all directions during the stretching of the stretchable display panel 000, and further, the film layer peeling phenomenon in the display island 10 range during stretching can be avoided, which is beneficial to improving the display effect of the display island 10 and improving the overall reliability of the stretchable panel 000.

In some alternative embodiments, referring to fig. 11, fig. 11 is a schematic plan view illustrating another stretchable display panel according to an embodiment of the present invention, in this embodiment, an orthogonal projection of the opening 400 formed in the organic layer 40 to the light-emitting surface of the stretchable display panel is a ring structure disposed around the display island 10.

This embodiment further illustrates that in the structure of a plurality of display islands 10 arranged in an array and a plurality of tensile bridges 20 connecting two adjacent display islands 10 of the stretchable display panel 000, the openings 400 opened in the organic layer 40 are disposed around the display islands 10, that is, the orthographic projection of the opening 400 opened in the organic layer 40 onto the substrate 30 may be a structure disposed around the display island 10, the opening 400 opened in the organic layer 40 is opened not only at the connecting position M of the display island 10 and the tensile bridge 20 but also around the display island 10, thereby, it is possible to ensure that the tensile stress generated from the tensile bridge 20 is not transferred to the range of the display islands 10 through the organic layer 40 in all directions during the stretching of the stretchable display panel 000, and further, the film layer peeling phenomenon in the display island 10 range during stretching can be avoided, which is beneficial to improving the display effect of the display island 10 and improving the overall reliability of the stretchable panel 000. In addition, in the embodiment, the orthographic projection of the opening 400 formed in the organic layer 40 to the light emitting surface of the stretchable display panel is an annular structure arranged around the display island 10, so that stress concentration at a right angle of the square opening 400 arranged around the display island 10 can be avoided, and the risk of breaking the film layer at the right angle can be easily caused.

Optionally, as shown in fig. 11, when the orthographic projection of the opening 400 disposed around the display island 10 to the light exit surface of the stretchable display panel is set to be an annular structure, the orthographic projection of the display island 10 to the light exit surface of the stretchable display panel may also be set to be a square shape with a rounded corner, so that the side 400A of the opening 400 disposed around the display island 10, which is close to the display island 10, is a square shape with a rounded corner, which is matched with the display island 10, and the side 400B of the opening 400, which is far from the display island 10, may also be set to be a square shape with a rounded corner, so that the opening 400 disposed around the display island 10 is formed to be an annular structure, which may reduce.

Optionally, as shown in fig. 12, fig. 12 is a schematic plan view of another stretchable display panel provided in the embodiment of the present invention, and the orthographic projection of the display island 10 on the light exit surface of the stretchable display panel may also be set to be circular, so that the opening 400 formed around the display island 10 is in a circular structure, and the stress concentration of the circular opening 400 may be reduced.

Optionally, as shown in fig. 13, fig. 13 is a schematic plan view of another stretchable display panel provided in the embodiment of the present invention, and the orthographic projection of the display island 10 to the light exit surface of the stretchable display panel may also be kept in a square shape, so that a side 400A of the opening 400 formed around the display island 10, which is close to the display island 10, is in a square shape matching the display island 10, and a side 400B of the opening 400, which is far away from the display island 10, may be in a square shape (or a circular shape, which is not illustrated), which has a rounded corner, and also may reduce the stress concentration of the annular opening 400.

In some alternative embodiments, with continued reference to fig. 10-13, in the present embodiment, the width W of the opening 400 of the ring structure is equal in a plane parallel to the substrate 30 and pointing to the opening 400 along the display island 10.

The present embodiment further explains that the width W of the opening 400 of the ring structure is equal along the direction of the display island 10 to the opening 400 in the plane parallel to the substrate 30, that is, no matter what shape the orthographic projection of the opening 400 of the ring structure to the light emitting surface of the stretchable display panel is in the shape of fig. 10-13, the width W of the opening 400 of the ring structure is equal along the direction of the display island 10 to the opening 400 in the plane parallel to the substrate 30, so that it can be guaranteed that the stretching stress generated by the stretching bridge 20 is not transmitted to the display island 10 through the organic layer 40 in the stretching process of the stretchable display panel 000, and further the film peeling phenomenon generated in the display island 10 during stretching can be avoided, which is beneficial to improving the display effect of the display island 10, improving the overall reliability of the stretchable panel 000, and reducing the stress concentration of the ring opening 400, avoiding the risk of film fracture.

In some alternative embodiments, please refer to fig. 14 and fig. 15 in combination, fig. 14 is a schematic plan view of another stretchable display panel provided in the embodiments of the present invention, fig. 15 is a schematic cross-sectional view along direction B-B' in fig. 14, in this embodiment, each display island 10 includes a plurality of light emitting devices 801 (in fig. 14 and fig. 15, two light emitting devices 801 are illustrated as an example in each display island 10), and at least one organic layer 40 is provided with a groove 4000 within a display island 10; the groove 4000 penetrates through at least one organic layer 40 along a direction Z perpendicular to the light emitting surface E of the stretchable display panel 000; the orthographic projection of the groove 4000 to the light-emitting surface E of the stretchable display panel 000 is not overlapped with the orthographic projection of the light-emitting device 801 to the light-emitting surface E of the stretchable display panel 000.

This embodiment further explains that the organic layer 40 within the display island 10 may also be provided with a groove 4000, and the groove 4000 penetrates through at least one organic layer 40 along the direction Z perpendicular to the light-emitting surface E of the stretchable display panel 000, at this time, the light-emitting device layer 80 of each display island 10 may be provided with a plurality of light-emitting devices 801, and the orthographic projection of the groove 4000 to the light-emitting surface E of the stretchable display panel 000 and the orthographic projection of the light-emitting devices 801 to the light-emitting surface E of the stretchable display panel 000 do not overlap. In the stretchable display panel 000 provided in this embodiment, when the tensile stress generated by the stretching bridge 20 may be transmitted to a certain light emitting device 801 at the edge of the display island 10 through the organic layer 40 at the connection position M between the display island 10 and the stretching bridge 20, the groove 4000 may be formed in the organic layer 40 within the display island 10, so as to prevent the tensile stress generated by the stretching bridge 20 from being further transmitted to other light emitting devices 801 within the display island 10, which may cause peeling of the film layer and affect the display effects of the other light emitting devices 801, thereby facilitating improvement of the display effect of the display island 10 and improving the overall reliability of the stretchable panel 000.

It should be noted that fig. 15 of this embodiment takes the case of disposing the groove 4000 in the display island 10 of the pixel definition layer 90 as an example, that is, the groove 4000 is disposed in the organic layer 40 in the display island 10, the organic layer 40 may be but is not limited to the pixel definition layer 90, and may also be other organic film layers, such as the planarization layer 70, and the like, and the grooves 4000 may also be disposed in the display island 10 of the plurality of organic layers 40 as shown in the above embodiments.

In some optional embodiments, please refer to fig. 16, fig. 16 is a schematic plan view illustrating another stretchable display panel according to an embodiment of the present invention, in this embodiment, each display island 10 includes four light emitting devices 801, a front projection of the groove 4000 to the light exit surface of the stretchable display panel 000 is a cross, the groove 4000 divides the display island 10 into four sub-islands 101, and the four light emitting devices 801 are respectively located within the four sub-islands 101.

The embodiment further explains that four light emitting devices 801 may be disposed on each display island 10 in the stretchable display panel 000, and a groove 4000 is formed between any two light emitting devices 801 in the organic layer 40, that is, the orthographic projection of the groove 4000 to the light exit surface of the stretchable display panel 000 may be designed as a cross, the groove 4000 divides the display island 10 into four sub-islands 101, and the four light emitting devices 801 are respectively located in the range of the four sub-islands 101, so that the tensile stress can be better prevented from being transmitted between the light emitting devices 801 to affect the display effect.

In some optional embodiments, referring to fig. 17, fig. 17 is a schematic plan view illustrating another stretchable display panel according to an embodiment of the present invention, in this embodiment, each display island 10 includes four light emitting devices 801, the groove 4000 includes two intersecting sub-grooves 4001, and an orthographic projection of each sub-groove 4001 onto a light emitting surface of the stretchable display panel 000 includes a contour line, and the contour line is a curve.

The embodiment further explains that four light emitting devices 801 are arranged on each display island 10, and a groove 4000 is formed in the organic layer 40 between any two light emitting devices 801, that is, the groove 4000 divides the display island 10 into four sub-islands 101, and when the four light emitting devices 801 are respectively located within the range of the four sub-islands 101, the groove 4000 may be configured to include two intersecting sub-grooves 4001, and an orthographic projection of each sub-groove 4001 to the light-emitting surface of the stretchable display panel 000 includes a contour line which is a curve, so that the edge of the groove 4000 (sub-groove 4001) formed in the organic layer 40 may be rounded, which is further beneficial to reducing stress concentration of each sub-island 102 on the display island 10, avoiding a situation that a film layer is broken due to the stress concentration of the contour line of the excessively sharp groove 4000, and is beneficial to improving the quality of the panel.

In some alternative embodiments, please refer to fig. 1 and fig. 18 in combination, fig. 18 is a schematic cross-sectional view taken along a direction a-a' in fig. 1, in which the opening 400 is filled with an elastic material 400C.

The embodiment further explains that at the connecting position M between the display island 10 and the stretching bridge 20, the opening 400 formed in the organic layer 40 may be filled with an elastic material 400C, and the optional elastic material 400C may be a low elastic modulus glue (a glue with a higher deformation amount), so that the signal line 1001 of the conductive layer 100 in the opening 400 may be prevented from being corroded, which is beneficial to improving the display quality and increasing the product yield.

Optionally, as shown in fig. 18, a surface of a side of the elastic material 400C filled in the opening 400, which is away from the substrate 30, is flush with a surface of a side of the organic layer 40, which is away from the substrate 30, so that the side of the organic layer 40, which is away from the substrate 30, can be made more flat, which is beneficial to manufacturing of subsequent films.

In some alternative embodiments, referring to FIG. 1 and FIG. 19 in combination, FIG. 19 is a schematic cross-sectional view taken along the direction A-A' in FIG. 1. in this embodiment, the opening 400 includes a first surface 400X away from the substrate 30, the first surface 400X forms an angle α with a sidewall 400Y of the opening 400, and the angle α is greater than or equal to 20 ° and less than or equal to 40 °.

The present embodiment further explains that the opening 400 may include a first surface 400X away from the substrate 30 (the first surface 400X of the opening 400 in an actual product is not present, and this embodiment is only for facilitating understanding that the included angle formed by the first surface 400X and the sidewall 400Y of the opening 400 is α), and the first surface 400X and the sidewall 400Y of the opening 400 have an acute included angle α, so that a certain slope buffer may be provided between the surface of the organic layer 40 away from the substrate 30 side and the sidewall 400Y of the opening 400, which is beneficial for the climbing of a film layer in a subsequent process, and improves uniformity.

Optionally, an included angle α between the first surface 400X and the sidewall 400Y of the opening 400 ranges from: alpha is more than or equal to 20 degrees and less than or equal to 40 degrees, the included angle alpha formed by the first surface 400X and the side wall 400Y of the opening 400 is preferably 30 degrees, the phenomenon that the included angle alpha formed by the first surface 400X and the side wall 400Y of the opening 400 is too small, the phenomenon that the thin area of the organic layer 40 at the peripheral part of the conductive layer 100 in the opening 400 is too large and the tensile property is not favorably improved can be avoided, and the phenomenon that the included angle alpha formed by the first surface 400X and the side wall 400Y of the opening 400 is too large, the gradient between the surface of the organic layer 40 at the side far away from the substrate 30 and the side wall 400Y of the opening 400 is too steep and the buffering of the film layer is not favorably.

It should be noted that the opening 400 of the present embodiment may include any one or any two or all of the first opening 4021, the second opening 4011 and the third opening 4031 in the above embodiments, that is, only the first opening 4021 may be provided as the above-mentioned angle structure, only the second opening 4011 may be provided as the above-mentioned angle structure, only the third opening 4031 may be provided as the above-mentioned angle structure (not shown in the drawings), and as shown in fig. 19, the first opening 4021, the second opening 4011 and the third opening 4031 formed in the plurality of organic layers 40 all have the above-mentioned angle structure, so that each organic layer 40 can have the above-mentioned effects.

In some alternative embodiments, referring to fig. 20, fig. 20 is a schematic plan view illustrating a display device according to an embodiment of the present invention, and the display device 111 provided in this embodiment includes the stretchable display panel 000 provided in the above embodiment of the present invention. The embodiment of fig. 20 is only an example of a mobile phone, and the display device 111 is described, it is understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the stretchable display panel 000 provided in the embodiment of the present invention, and specific descriptions of the stretchable display panel 000 in the above embodiments may be specifically referred to, and the detailed descriptions of the embodiment are omitted here.

As can be seen from the above embodiments, the stretchable display panel and the display device provided by the present invention at least achieve the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The stretchable display panel is characterized by comprising a plurality of display islands arranged in an array and a plurality of stretching bridges connecting two adjacent display islands;

the stretchable display panel further comprises a substrate and at least one organic layer, wherein the organic layer is positioned on one side of the substrate, which is close to the light-emitting surface of the stretchable display panel;

the organic layer is provided with an opening at the connecting position of the display island and the stretching bridge; the opening penetrates through at least one organic layer along the direction perpendicular to the light-emitting surface of the stretchable display panel.

2. The stretchable display panel according to claim 1, further comprising a conductive layer including a plurality of signal lines through which a plurality of the display islands are electrically connected to each other.

3. A stretchable display panel according to claim 2, wherein the at least one organic layer comprises a first organic layer and a second organic layer, the first organic layer being located on a side of the conductive layer closer to the substrate, the second organic layer being located on a side of the conductive layer farther from the substrate;

the second organic layer is provided with a first opening penetrating through the second organic layer at a position where the display island is connected with the stretching bridge.

4. The stretchable display panel according to claim 3, wherein the stretchable display panel sequentially comprises a source/drain metal layer, a passivation layer, a planarization layer, a transition metal layer, and a pixel definition layer within the display island along a direction in which the substrate points to a light-emitting surface of the stretchable display panel.

5. The stretchable display panel of claim 4,

the conducting layer and the source/drain metal layer are arranged on the same layer, and the second organic layer and the planarization layer are arranged on the same layer.

6. The stretchable display panel of claim 4,

the conducting layer and the transition metal layer are arranged on the same layer, the first organic layer and the planarization layer are arranged on the same layer, and the second organic layer and the pixel definition layer are arranged on the same layer.

7. The stretchable display panel of claim 3,

the first organic layer is provided with a second opening penetrating through the first organic layer at the connecting position of the display island and the stretching bridge;

the conductive layer covers the first organic layer, and a part of the conductive layer is filled in the second opening.

8. The stretchable display panel of claim 7, wherein the aperture of the second opening is larger than the aperture of the first opening.

9. A stretchable display panel according to claim 3, wherein at least one of the organic layers further comprises a third organic layer on a side of the second organic layer remote from the substrate;

the third organic layer is provided with a third opening penetrating through the third organic layer;

the third organic layer covers the second organic layer, and a part of the third organic layer is attached to the side wall of the first opening to form the third opening.

10. The stretchable display panel of claim 9, wherein the aperture of the first opening is larger than the aperture of the third opening;

the first opening has a pore size of 15 μm or more, and the third opening has a pore size of 5 μm or more.

11. The stretchable display panel of claim 1, wherein the opening is disposed around the display island.

12. The stretchable display panel of claim 11, wherein an orthographic projection of the opening onto the light exit surface of the stretchable display panel is an annular structure disposed around the display island.

13. The stretchable display panel according to claim 12, wherein the openings of the ring structures are equally wide along the display islands towards the openings in a plane parallel to the substrate.

14. The stretchable display panel of claim 1,

each display island comprises a plurality of light-emitting devices, and at least one organic layer is provided with a groove within the range of one display island; the groove at least penetrates through one organic layer along the direction perpendicular to the light-emitting surface of the stretchable display panel;

the orthographic projection of the groove to the light-emitting surface of the stretchable display panel is not overlapped with the orthographic projection of the light-emitting device to the light-emitting surface of the stretchable display panel.

15. The stretchable display panel according to claim 14, wherein each of the display islands comprises four light emitting devices, an orthographic projection of the groove onto the light exit surface of the stretchable display panel is a cross shape, the groove divides the display island into four sub-islands, and the four light emitting devices are respectively located within the four sub-islands.

16. The stretchable display panel of claim 14, wherein the groove comprises two intersecting sub-grooves, and an orthographic projection of each sub-groove onto the light exit surface of the stretchable display panel comprises a contour line, and the contour line is a curve.

17. The stretchable display panel of claim 1, wherein the opening is filled with an elastic material.

18. A stretchable display panel according to claim 1, wherein the opening comprises a first surface remote from the substrate, the first surface forming an angle α with a sidewall of the opening, and 20 ° ≦ α ≦ 40 °.

19. A display device comprising the stretchable display panel according to any one of claims 1 to 18.