Stretchable display panel and stretchable display device

Abstract

The invention provides a stretchable display panel and a stretchable display device.The stretchable display panel comprises a display area and a non-display area, the display area comprises a plurality of island structures and bridge structures, and every two adjacent island structures are connected through the corresponding bridge structure; the stretchable display panel comprises a stretchable layer, a plurality of first stretching restraining pieces and a plurality of second stretching restraining pieces. The island structure, the bridge structure and the first stretching restraining part are all located on the first side of the stretchable layer, the second stretching restraining parts are all located in the stretchable layer, and the orthographic projection of the first stretching restraining part on the face of the first side of the stretchable layer and the orthographic projection of the second stretching restraining part on the face of the first side of the stretchable layer at least partially coincide. At least a portion of the first stretch inhibiting member is located between the stretchable layer and the island structure. Therefore, according to the stretchable display panel and the stretchable display device, the situation that the stretchable display panel is excessively stretched can be relieved, and therefore the situation that the functional pattern layer of the stretchable display panel is damaged due to the fact that the functional pattern layer is excessively stretched is reduced or avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a stretchable display panel and a stretchable display device. Background Art

[0002] In stretchable display technology, the display backplane is designed to be flexible, that is, the display backplane is hollowed out and the mechanical properties of the material itself are changed, so that the display panel can be stretched and deformed in any direction, thereby realizing stretchable and expandable display.

[0003] In the related art, a stretchable display panel may include multiple island structures and multiple bridge structures, and each two adjacent island structures may be connected by a bridge structure, and the bridge structure may include a metal trace, and the metal trace may electrically connect adjacent island structures. During the stretching process of the display panel, the display panel is subjected to an external force, causing the display panel to be subjected to tensile stress and deform.

[0004] However, the above display panel is easily damaged during the stretching process. Summary of the invention

[0005] In view of at least one of the above-mentioned technical problems, the embodiments of the present application provide a stretchable display panel and a stretchable display device, which can alleviate the situation where the stretchable display panel is over-stretched, thereby reducing or avoiding the situation where the functional pattern layer of the stretchable display panel is damaged due to over-stretching.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a stretchable display panel, comprising a display area and a non-display area, wherein the non-display area is located at least partially on the periphery of the display area, and the display area comprises a plurality of island structures and a bridge structure, wherein two adjacent island structures are connected by the bridge structure; the stretchable display panel comprises a stretchable layer, a plurality of first stretch-suppressing members and a plurality of second stretch-suppressing members, wherein along the thickness direction of the stretchable display panel, the stretchable layer comprises a first side and a second side which are relatively arranged; the island structure, the bridge structure and the first stretch-suppressing member are all located on the first side of the stretchable layer, and each second stretch-suppressing member is all located in the stretchable layer, and the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-suppressing member is located between the stretchable layer and the island structure.

[0008] The stretchable display panel provided in the embodiment of the present application comprises a display area and a non-display area, wherein the non-display area is located at least partially on the periphery of the display area, and the display area comprises a plurality of island structures and a bridge structure, wherein two adjacent island structures are connected by the bridge structure; the stretchable display panel comprises a stretchable layer, a plurality of first stretch-suppressing members and a plurality of second stretch-suppressing members, wherein along the thickness direction of the stretchable display panel, the stretchable layer comprises a first side and a second side which are arranged opposite to each other; the island structure, the bridge structure and the first stretch-suppressing member are all located on the first side of the stretchable layer, and each second stretch-suppressing member is all located in the stretchable layer, and the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-suppressing member is located between the stretchable layer and the island structure. During the stretching process of the stretchable display panel, the second stretch-suppressing member can be used to disperse the external force on the first stretch-suppressing member, thereby alleviating the stress on the first stretch-suppressing member and preventing the first stretch-suppressing member and the stretchable display panel from being over-stretched, thereby reducing or avoiding the functional pattern layer at the first stretch-suppressing member from being damaged due to over-stretching, thereby reducing or avoiding the functional pattern layer of the stretchable display panel from being damaged due to over-stretching, extending the service life of the stretchable display panel and the stretchable display device, and improving the reliability of the stretchable display panel and the stretchable display device during the stretching process.

[0009] In a possible implementation, the second side of the stretchable layer has a plurality of grooves, the notches of each groove are located on the surface of the second side of the stretchable layer, and the second stretch-inhibiting members are located in the grooves one by one;

[0010] What can be achieved is that the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer covers the orthographic projection of the corresponding first stretch-suppressing member on the surface of the first side of the stretchable layer;

[0011] It can be achieved that the surface of the second stretch-suppressing member facing away from the groove bottom wall of the groove is flush with the surface of the second side of the stretchable layer.

[0012] In this way, the first stretch-suppressing member and the second stretch-suppressing member sandwich part of the stretchable layer in the middle, thereby suppressing the stretchability of the stretchable layer located between the first stretch-suppressing member and the second stretch-suppressing member, so that the first stretch-suppressing member, the second stretch-suppressing member and the stretchable layer located between the first stretch-suppressing member and the second stretch-suppressing member jointly form a stretching inhibition area to protect the functional pattern layer corresponding to the inhibition area.

[0013] In a possible embodiment, the stretchable layer has multiple through holes, and each through hole penetrates the stretchable layer along the thickness direction of the stretchable display panel. The second stretch-suppressing members are located in the through holes one by one, and the second stretch-suppressing members are connected to the corresponding first stretch-suppressing members.

[0014] In this way, during the stretching process, the external force first acts on the second stretch-suppressing member located in the stretchable layer. The second stretch-suppressing member can disperse the external force along the thickness direction of the stretchable substrate and disperse the external force applied to the stretchable substrate into three-dimensional space, thereby alleviating the stress on the first stretch-suppressing member and protecting the functional pattern layer at the first stretch-suppressing member.

[0015] In a possible implementation, along the direction from the second side to the first side of the stretchable layer, the cross-sectional area of ​​the second stretch-inhibiting member is equal everywhere or gradually increases;

[0016] It can be achieved that the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer is located within the orthographic projection of the corresponding first stretch-suppressing member on the surface of the first side of the stretchable layer.

[0017] In this way, the cross-sectional area of ​​the second stretch-suppressing member is equal everywhere, so that the external force can be evenly distributed on the second stretch-suppressing member, avoiding stress concentration at a certain place of the second stretch-suppressing member and easily damaging the second stretch-suppressing member. Along the direction from the second side to the first side of the stretchable layer, the cross-sectional area of ​​the second stretch-suppressing member can be gradually increased, which can reduce the difficulty of preparing the second stretch-suppressing member.

[0018] In a possible implementation, the second stretch-suppressing member includes a first end close to the first side of the stretchable layer, and a second end close to the second side of the stretchable layer, and a cross-sectional area of ​​the second end is greater than a cross-sectional area of ​​the first end;

[0019] What can be achieved is that the orthographic projection of the first end on the surface of the first side of the stretchable layer is located within the orthographic projection of the corresponding first stretch-inhibiting member on the surface of the first side of the stretchable layer;

[0020] It can be achieved that at least part of the orthographic projection of the second end on the surface of the first side of the stretchable layer is located outside the orthographic projection of the corresponding first stretch-inhibiting member on the surface of the first side of the stretchable layer.

[0021] In this way, the cross-sectional area of ​​the first end is small, so that the total volume of the first end and the first stretch-suppressing member is small, so that the first stretch-suppressing member and the first end can limit the stretching of the corresponding stretchable substrate, and at the same time take into account the flexibility of the first stretch-suppressing member and the first end, so as to avoid the first stretch-suppressing member, the first end and the stretchable layer from peeling off due to the large deformation difference under the action of external force. In addition, the cross-sectional area of ​​the second end is large, so that the second end can better disperse the external force, and the deformation generated by the second end is small, so as to better alleviate the deformation of the first stretch-suppressing member caused by the external force, thereby protecting the functional pattern layer at the first stretch-suppressing member.

[0022] In a possible implementation, the stretchable layer located in the non-display area includes a first wiring portion and two second wiring portions, and the second wiring portions are located at two opposite ends of an extension direction of the first wiring portion;

[0023] The stretchable display panel located in the non-display area includes a plurality of conductive lines, each of which is located on the first side of the stretchable layer, at least part of the plurality of conductive lines is arranged at intervals along the extension direction of the first wiring portion, and all extend from the second wiring portion to the first wiring portion;

[0024] It can be realized that the first tensile-suppressing member is also located on the first side of the first wiring portion and / or the second wiring portion;

[0025] It can be realized that in the non-display area, there are a plurality of first stretch-suppressing members, the conductive wires are connected to the first stretch-suppressing members in a one-to-one correspondence, and the orthographic projection of the conductive wires on the surface of the first side of the stretchable layer is located within the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer;

[0026] In this way, the flexibility of the first stretch-suppressing member at the first wiring portion and the two second wiring portions can be taken into consideration, thereby reducing the situation where the first stretch-suppressing member and the stretchable layer are peeled off due to excessive deformation difference under the action of external force.

[0027] It can be realized that in the non-display area, there are a plurality of first stretch-suppressing members, a gap is provided between each two adjacent first stretch-suppressing members, and the conductive lines are located in the gap in a one-to-one correspondence;

[0028] What can be achieved is that the first tensile-suppressing member located on the first wiring portion and the two second wiring portions is an integrated structure, and / or the second tensile-suppressing member located on the first wiring portion and the two second wiring portions is an integrated structure.

[0029] In this way, the difficulty of preparing the first tensile-suppressing member and / or the second tensile-suppressing member located on the first wiring portion and the two second wiring portions can be simplified.

[0030] In a possible implementation, the stretchable layer has a plurality of through holes, at least some of the through holes are located in the non-display area, each conductive line is located on the surface of the first side of the stretchable layer, and each conductive line is located outside the through hole.

[0031] In this way, the conductive wires and the through holes can be staggered, thereby preventing the conductive wires from entering the through holes and being easily broken.

[0032] In a possible implementation, the same second tensile suppressing member includes a plurality of sub-tensile suppressing members, and the plurality of sub-tensile suppressing members are arranged at intervals along the surface of the second side of the stretchable layer;

[0033] It can be achieved that the second side of the stretchable layer is provided with an auxiliary stretchable layer;

[0034] It may be achieved that the elastic modulus of the first stretch-suppressing member and / or the second stretch-suppressing member is greater than the elastic modulus of the stretchable layer.

[0035] In this way, the area of ​​a single sub-stretching member is smaller, which can better take into account the flexibility of the second stretching member, and avoid peeling due to excessive deformation difference between the second stretching member and the stretchable layer during the stretching process.

[0036] In a possible implementation manner, the first stretch-suppressing member is further located between the stretchable layer and the bridge structure.

[0037] A second aspect of an embodiment of the present application provides a stretchable display device, comprising the stretchable display panel in the first aspect.

[0038] A stretchable display device provided in an embodiment of the present application comprises a stretchable display panel, the stretchable display panel comprises a display area and a non-display area, the non-display area is located at least partially on the periphery of the display area, the display area comprises a plurality of island structures and a bridge structure, two adjacent island structures are connected by the bridge structure; the stretchable display panel comprises a stretchable layer, a plurality of first stretch-suppressing members and a plurality of second stretch-suppressing members, along the thickness direction of the stretchable display panel, the stretchable layer comprises a first side and a second side arranged oppositely; the island structure, the bridge structure and the first stretch-suppressing member are all located on the first side of the stretchable layer, each second stretch-suppressing member is all located in the stretchable layer, the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-suppressing members are located between the stretchable layer and the island structure. During the stretching process of the stretchable display panel, the second stretch-suppressing member can be used to disperse the external force on the first stretch-suppressing member, thereby alleviating the stress on the first stretch-suppressing member and preventing the first stretch-suppressing member and the stretchable display panel from being over-stretched, thereby reducing or avoiding the functional pattern layer at the first stretch-suppressing member from being damaged due to over-stretching, thereby reducing or avoiding the functional pattern layer of the stretchable display panel from being damaged due to over-stretching, extending the service life of the stretchable display panel and the stretchable display device, and improving the reliability of the stretchable display panel and the stretchable display device during the stretching process.

[0039] The construction of the present application and its other inventive objectives and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A top view of a stretchable display panel provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure after a stretchable substrate is formed on a carrier plate provided in an embodiment of the present application;

[0043] Figure 3 A cross-sectional view of a stretchable display panel provided in an embodiment of the present application;

[0044] Figure 4 Another cross-sectional view of a stretchable display panel provided in an embodiment of the present application;

[0045] Figure 5 Another cross-sectional view of a stretchable display panel provided in an embodiment of the present application;

[0046] Figure 6 A cross-sectional view of a stretchable display panel formed on a carrier plate provided in an embodiment of the present application;

[0047] Figure 7 A top view of a stretchable substrate provided in an embodiment of the present application;

[0048] Figure 8 Another top view of the stretchable display panel provided by an embodiment of the present application;

[0049] Fig. 9 Another top view of the stretchable substrate provided in an embodiment of the present application.

[0050] Description of reference numerals:

[0051] 100: stretchable display panel; 100a: display area;

[0052] 100b: non-display area; 101: stretchable substrate;

[0053] 110: first tensile-suppressing member; 111: gap;

[0054] 112: island tension suppressing member; 113: bridge tension suppressing member;

[0055] 120: second tensile suppressing member; 120a: sub-tensile suppressing member;

[0056] 121: first end; 122: second end;

[0057] 130: stretchable layer; 131: first wiring portion;

[0058] 132: second wiring portion; 133: groove;

[0059] 134: through hole; 140: auxiliary stretchable layer;

[0060] 151: a first conductive line; 152: a second conductive line;

[0061] 160: island structure; 161: driving circuit;

[0062] 162: light emitting device; 200: carrier board. DETAILED DESCRIPTION

[0063] In the related art, the stretchable display panel has high flexibility, and the user can bend or stretch the stretchable display panel without affecting the display function of the stretchable display panel. In addition, when the user removes the external force, the stretchable display panel can return to its original state.

[0064] The stretchable display panel may include multiple island structures and multiple bridge structures, each adjacent two island structures are connected by a bridge structure, and the bridge structure may include a metal trace, and the metal trace electrically connects the adjacent island structures. The island structure may include a driving circuit and a light-emitting device, and the driving circuit is used to provide a driving signal to the light-emitting device. During the stretching process of the stretchable display panel, the stretchable display panel is subjected to an external force, causing the stretchable display panel to be subjected to tensile stress and deformed.

[0065] However, stretchable display panels are easily damaged by overstretching during the stretching process.

[0066] Based on at least one of the above-mentioned technical problems, an embodiment of the present application provides a stretchable display panel and a stretchable display device, the stretchable display panel comprising a display area and a non-display area, the non-display area being located at least partially on the periphery of the display area, the display area comprising a plurality of island structures and a bridge structure, two adjacent island structures being connected by the bridge structure; the stretchable display panel comprising a stretchable layer, a plurality of first stretch-suppressing members and a plurality of second stretch-suppressing members, along the thickness direction of the stretchable display panel, the stretchable layer comprising a first side and a second side arranged oppositely; the island structure, the bridge structure and the first stretch-suppressing member are all located on the first side of the stretchable layer, and each second stretch-suppressing member is all located in the stretchable layer, the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-suppressing members are located between the stretchable layer and the island structure. During the stretching process of the stretchable substrate, the second stretch-suppressing member can be used to disperse the external force on the first stretch-suppressing member, thereby alleviating the stress on the first stretch-suppressing member and preventing the first stretch-suppressing member and the stretchable display panel from being over-stretched, thereby reducing or avoiding the functional pattern layer at the first stretch-suppressing member from being damaged by over-stretching, thereby reducing or avoiding the functional pattern layer of the stretchable display panel from being damaged by over-stretching, extending the service life of the stretchable display panel and the stretchable display device, and improving the reliability of the stretchable display panel and the stretchable display device during the stretching process.

[0067] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0068] This embodiment provides a stretchable display device, which can include electronic paper, mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo frames, smart bracelets, smart watches, super personal computers, navigators and other terminals.

[0069] The following will be combined Figure 1-Figure 9 The stretchable display panel 100 provided in the embodiment of the present application is described.

[0070] The stretchable display panel 100 can be applied to the stretchable display device in the above-mentioned embodiment. Figure 1 , the stretchable display panel 100 may include a display area 100a and a non-display area 100b, the display area 100a is used to display a picture, and the non-display area 100b and the display area 100a may be arranged adjacent to each other. The non-display area 100b may be located on at least one side of the display area 100a. For example, the non-display area 100b may be surrounded by part or all of the periphery of the display area 100a. The non-display area 100b on one side of the stretchable display panel 100 along the second direction Y may include a fan-out area and a binding area, the fan-out area may be located between the binding area and the display area 100a, and the stretchable display panel 100 in the binding area may be used to bind a driver chip.

[0071] The embodiment of the present application is described by taking the non-display area 100 b being disposed around the outer periphery of the display area 100 a as an example.

[0072] See also Figure 2 and Figure 3 , the stretchable display panel 100 may include a first direction X, a second direction Y and a third direction Z, and the first direction X, the second direction Y and the third direction Z are all different. For example, the first direction X, the second direction Y and the third direction Z may be perpendicular to each other. Exemplarily, the first direction X may be the width direction of the stretchable display panel 100, the second direction Y may be the length direction of the stretchable display panel 100, and the third direction Z may be the thickness direction of the stretchable display panel 100. The length, width and thickness in the embodiments of the present application are merely for the convenience of description and do not imply any limitation on the size. For example, the width may be greater than, equal to or less than the length. Among them, the stretchable display panel 100 can be stretched and contracted in any direction on the plane where XY is located.

[0073] In some embodiments, see Figure 4-Figure 6 The stretchable display panel 100 may include a stretchable substrate 101, which may provide support and protection for the remaining structural layers that are subsequently provided. The stretchable substrate 101 may include a stretchable layer 130, which may be bent, stretched, and shrunk. The stretchable layer 130 may be made of a flexible material, for example, the material of the stretchable layer 130 may include an organic material such as polydimethylsiloxane (PDMS) or polyurethane (PU).

[0074] It can be realized that the stretchable layer 130 can have a certain elasticity and toughness. After the external force is removed, the stretchable layer 130 can return to its original state, that is, reversibly stretch and shrink.

[0075] Exemplarily, along the thickness direction of the stretchable substrate 101, the stretchable layer 130 may include a first side and a second side that are arranged opposite to each other. The first side may be toward the light-emitting side of the stretchable display panel 100, and the second side may be toward the backlight side of the stretchable display panel 100. The light-emitting side of the stretchable display panel 100 is a side for displaying images, and the backlight side is the other side that is arranged opposite to the light-emitting side along the thickness direction of the stretchable display panel 100. The first side of the stretchable layer 130 is Figure 3 The upper side of the stretchable layer 130 is Figure 3 The lower side of the .

[0076] For example, see Figure 7 , the edge of the stretchable layer 130 may include two second wiring portions 132 spaced apart along the first direction X, and a first wiring portion 131 located on one side of the second direction Y. The two second wiring portions 132 may be located at opposite ends of the extension direction (first direction X) of the first wiring portion 131. The first wiring portion 131 and the second wiring portion 132 may both be located in the non-display area 100b, and the first wiring portion 131 may be located in the fan-out area and / or the binding area.

[0077] The first stretch-suppressing member 110 provided in the embodiment of the present application is described below.

[0078] See also Figure 2 and Figure 3 The stretchable substrate 101 may include a first stretch suppressing member 110, and the first stretch suppressing member 110 may be multiple, and the multiple first stretch suppressing members 110 are arranged along the first side of the stretchable layer 130. Each first stretch suppressing member 110 may be located on the first side of the stretchable layer 130.

[0079] Exemplarily, the elastic modulus of the first stretch-suppressing member 110 can be greater than the elastic modulus of the stretchable layer 130. With this configuration, the first stretch-suppressing member 110 has a certain ability to inhibit stretching. During the stretching process of the stretchable substrate 101, the first stretch-suppressing member 110 is not easily bent or stretched, and the maximum stretching length of the stretchable substrate 101 at the first stretch-suppressing member 110 can be limited, thereby alleviating the situation where the functional pattern layer (for example, the driving circuit 161, the light-emitting device 162, the conductive line, etc.) at the first stretch-suppressing member 110 is damaged by excessive stretching, thereby protecting the functional pattern layer at the first stretch-suppressing member 110 and improving the reliability of the stretchable substrate 101 and the stretchable display panel 100 during the stretching process.

[0080] For example, the material of the first stretch-suppressing member 110 may include organic materials such as polyimide (PI for short), polyacrylate or polyacetate, or the material of the first stretch-suppressing member 110 may also be an inorganic material.

[0081] Among them, the elastic modulus is an indicator to measure the ease with which a material undergoes elastic deformation. The larger its value, the greater the stress required to cause a certain elastic deformation of the material, that is, the greater the stiffness of the material.

[0082] In some embodiments, see Figure 2 and Figure 3 In the display area 100a, the plurality of first tensile suppressing members 110 may include a plurality of island tensile suppressing members 112 arranged at intervals. For example, the island tensile suppressing members 112 may be arranged in an array. An island structure 160 may be provided on the side of the island tensile suppressing member 112 away from the stretchable layer 130, and the island structure 160 may include one or more pixel units. That is, the island tensile suppressing member 112 is located between the stretchable layer 130 and the island structure 160. Each pixel unit may include a driving circuit 161 and a light-emitting device 162, and the driving circuit 161 is electrically connected to the light-emitting device 162 to drive the light-emitting device 162 to emit light. Among them, the light-emitting device 162 may be an organic light-emitting diode (Organic Light-Emitting Diode, referred to as OLED), or a micro light-emitting diode (Micro Light Emitting Diode, referred to as Micro LED or μLED), etc. The driving circuit 161 may include a thin film transistor (Thin Film Transi stor, referred to as TFT) and a capacitor structure, etc. The island stretch-suppressing member 112 can alleviate the situation where the driving circuit 161, the light-emitting device 162, etc. at the first stretch-suppressing member 110 are damaged due to excessive stretching, so as to protect the driving circuit 161, the light-emitting device 162, etc. at the first stretch-suppressing member 110 and improve the reliability of the stretchable substrate 101 and the stretchable display panel 100 during the stretching process.

[0083] In some embodiments, see Figure 2 and Figure 3 In the display area 100a, the plurality of first tensile suppressing members 110 may include a plurality of bridge tensile suppressing members 113, and at least one bridge tensile suppressing member 113 may be provided between each two adjacent island tensile suppressing members 112, and the bridge tensile suppressing members 113 are connected. A bridge structure may be provided on the side of the bridge tensile suppressing member 113 away from the stretchable layer 130, and a bridge structure may include at least one first conductive line 151. That is, the bridge tensile suppressing member 113 may be located between the stretchable layer 130 and the bridge structure. The pixel units of the island structure 160 on each two adjacent island tensile suppressing members 112 may be connected and electrically conductive through the first conductive line 151. For example, the bridge tensile suppressing member 113 may be curved to cope with stretching, so that the stretchable display panel 100 has better stretchability. When the display panel is stretched, the bridge tensile suppressing member 113 will deform. When the external force is removed, the bridge tensile suppressing member 113 can be restored to its original undeformed state. In addition, since the elastic modulus of the bridge suppression stretching member 113 is relatively high, it will not be easily stretched after being stretched to a certain extent, thereby alleviating the situation where the first conductive line 151 at the bridge suppression stretching member 113 is damaged by excessive stretching, thereby protecting the first conductive line 151 and improving the reliability of the stretchable substrate 101 and the stretchable display panel 100 during the stretching process.

[0084] In some other embodiments, the first conductive line 151 may be located on the side of the stretchable layer 130 facing the bridge suppression stretch member 113. For example, at least part of the first conductive line 151 may be located between the bridge suppression stretch member 113 and the stretchable layer 130. Alternatively, the orthographic projection of the bridge suppression stretch member 113 on the surface of the first side of the stretchable layer 130 does not overlap with the orthographic projection of the first conductive line 151 on the surface of the first side of the stretchable layer 130.

[0085] It is understandable that, in the display area 100a, the first tensile suppressing member 110 may be provided with an island tensile suppressing member 112 or a bridge tensile suppressing member 113, or the first tensile suppressing member 110 may be provided with both the island tensile suppressing member 112 and the bridge tensile suppressing member 113.

[0086] In some embodiments, at least a portion of the first stretch-suppressing members 110 may be distributed in the non-display area 100b. In the non-display area 100b, the first stretch-suppressing member 110 may be disposed on at least one side of the stretchable layer 130 along the first direction X, and / or, the first stretch-suppressing member 110 may be disposed on at least one side of the stretchable layer 130 along the second direction Y. For example, the first stretch-suppressing member 110 may be disposed on the first side of the first wiring portion 131 and / or the two second wiring portions 132. The embodiment of the present application is described by taking the first stretch-suppressing member 110 disposed on the first wiring portion 131 and the two second wiring portions 132 of the stretchable layer 130 as an example.

[0087] For example, see Figure 8 , the stretchable display panel 100 located in the non-display area 100b may include a plurality of conductive lines (i.e., second conductive lines 152), and the second conductive lines 152 may include at least one of a data line, a power line, a scan line, etc. Each second conductive line 152 may be located on the first side of the stretchable layer 130, at least a portion of the plurality of second conductive lines 152 may be arranged at intervals along the extension direction of the first wiring portion 131, and at least a portion of the plurality of second conductive lines 152 may extend from the second wiring portion 132 to the first wiring portion 131. In the non-display area 100b, the second conductive lines 152 may be located on the side of the stretchable layer 130 facing the first stretch-suppressing member 110, for example, at least a portion of the second conductive lines 152 may be located between the first stretch-suppressing member 110 and the stretchable layer 130, or the orthographic projection of the first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130 does not overlap with the orthographic projection of the second conductive lines 152 on the surface of the first side of the stretchable layer 130. Alternatively, the second conductive line 152 may be located on a side of the first stretch-suppressing member 110 facing away from the stretchable layer 130 .

[0088] For some examples, see Fig. 9In the non-display area 100b, on the first wiring portion 131 and the two second wiring portions 132, there can be multiple first stretch-suppressing members 110, at least part of the multiple first stretch-suppressing members 110 are arranged at intervals along the extension direction of the first wiring portion 131, and at least part of the multiple first stretch-suppressing members 110 extend from the second wiring portion 132 to the first wiring portion 131, and the first stretch-suppressing members 110 located at both ends of the extension direction of the first wiring portion 131 are connected to the first stretch-suppressing members 110 located on the second wiring portion 132. There may be a gap 111 between each two adjacent first stretch-suppressing members 110. For example, the second conductive line 152 may be connected to the first stretch-suppressing member 110 in a one-to-one correspondence, and the orthographic projection of the second conductive line 152 on the surface of the first side of the stretchable layer 130 is located within the orthographic projection of the first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130. The area of ​​the first stretch-suppressing member 110 is greater than or equal to the area of ​​the corresponding second conductive wire 152. The second conductive wire 152 is covered by the first stretch-suppressing member 110. During the stretching process, the external force first acts on the first stretch-suppressing member 110 with a larger area. The stress generated by the external force will be dispersed in various places of the first stretch-suppressing member 110, thereby relieving the stress on the second conductive wire 152, relieving the damage of the second conductive wire 152 due to excessive stretching, and protecting the second conductive wire 152. In addition, since the area of ​​the first stretch-suppressing member 110 is large, the first stretch-suppressing member 110 has a good ability to suppress stretching. During the stretching process of the stretchable substrate 101, the first stretch-suppressing member 110 is not easy to bend or stretch. The deformation of the first stretch-suppressing member 110 is small, so that the deformation of the second conductive wire 152 is small, thereby relieving the damage of the second conductive wire 152 due to excessive stretching, and protecting the second conductive wire 152. Alternatively, the second conductive wires 152 are located in the gaps 111 in a one-to-one correspondence. During the stretching process, the first stretch-suppressing member 110 can disperse the external force at various locations of the first stretch-suppressing member 110 along the second direction Y, thereby relieving the stress on the second conductive wire 152 and protecting the second conductive wire 152. Alternatively, the orthographic projections of a portion of the second conductive wires 152 on the surface of the first side of the stretchable layer 130 are located within the orthographic projections of the first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130. Another portion of the second conductive wires 152 are located in the gap 111. The principle has been explained and will not be repeated here.

[0089] For other examples, see Figure 7 and Figure 8In the non-display area 100b, the first stretch-suppressing member 110 located on the first wiring portion 131 and the two second wiring portions 132 may be an integral structure, thereby simplifying the difficulty of preparing the first stretch-suppressing member 110 located on the first wiring portion 131 and the two second wiring portions 132. For example, the orthographic projection of the second conductive line 152 on the surface of the first side of the stretchable layer 130 may be located within the orthographic projection of the first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130. Compared with providing a plurality of first stretch-suppressing members 110 on the first wiring portion 131 and the two second wiring portions 132, the first stretch-suppressing member 110 of the integral structure has a larger area, thereby providing better protection for the second conductive line 152.

[0090] It can be understood that at least a portion of the first tensile suppressing members 110 can be distributed in the display area 100a. In the display area 100a, the first tensile suppressing members 110 can include at least one of the island tensile suppressing members 112 and the bridge tensile suppressing members 113. For example, a portion of the first tensile suppressing members 110 can be distributed in the display area 100a, and another portion of the first tensile suppressing members 110 can be distributed in the non-display area 100b. Alternatively, the entire number of the first tensile suppressing members 110 can be distributed in the display area 100a. Alternatively, the entire number of the first tensile suppressing members 110 can be distributed in the non-display area 100b.

[0091] The second stretch-suppressing member 120 provided in the embodiment of the present application is described below.

[0092] See also Figure 3-Figure 5The stretchable substrate 101 may include a second stretch-suppressing member 120, and the second stretch-suppressing member 120 may be multiple, and the multiple second stretch-suppressing members 120 are arranged along the second side of the stretchable layer 130. Each second stretch-suppressing member 120 may be located in the stretchable layer 130, and the first stretch-suppressing member 110 is located outside the stretchable layer 130. In this way, during the stretching process, the stretchable layer 130 is deformed, and the external force is more likely to act on the second stretch-suppressing member 120 first through the stretchable layer 130. The second stretch-suppressing member 120 can be used to disperse the external force on the first stretch-suppressing member 110, thereby relieving the stress on the first stretch-suppressing member 110 and reducing the deformation of the first stretch-suppressing member 110, thereby reducing the situation where the functional pattern layer at the first stretch-suppressing member 110 is damaged by excessive stretching, so as to protect the functional pattern layer at the first stretch-suppressing member 110 and improve the reliability of the stretchable substrate 101 and the stretchable display panel 100 during the stretching process. In addition, compared with setting the second stretch-suppressing member 120 on the first side of the stretchable layer 130, the second stretch-suppressing member 120 can avoid affecting the layout of the first stretch-suppressing member 110, and can also avoid the stretchability of the stretchable substrate 101 being affected by the excessive density of the stretch-suppressing members (the first stretch-suppressing member 110 and the second stretch-suppressing member 120) set on the first side of the stretchable layer 130. Secondly, the second stretch-suppressing member 120 is located in the stretchable layer 130, which can effectively reduce the stretchability of the stretchable layer 130, reduce the deformation of the stretchable layer 130 at the second stretch-suppressing member 120 during the stretching process, and alleviate the external force transmitted from the stretchable layer 130 to the first stretch-suppressing member 110, so as to reduce the deformation of the first stretch-suppressing member 110 and protect the functional pattern layer at the first stretch-suppressing member 110.

[0093] It is understood that the external force can be transmitted to the first stretch-suppressing member 110 and / or the second stretch-suppressing member 120 through the stretchable layer 130. The external force can also directly act on the stretchable substrate 101 at the first stretch-suppressing member 110 and / or the second stretch-suppressing member 120, thereby directly acting on the first stretch-suppressing member 110 and / or the second stretch-suppressing member 120.

[0094] Exemplarily, the elastic modulus of the second stretch-suppressing member 120 may be greater than the elastic modulus of the stretchable layer 130. In this way, the second stretch-suppressing member 120 has a certain ability to suppress stretching. During the stretching process of the stretchable substrate 101, the second stretch-suppressing member 120 is not easily bent or stretched, and the maximum stretching length of the stretchable substrate 101 at the second stretch-suppressing member 120 can be limited. For example, the same first stretch-suppressing member 110 can correspond to at least one second stretch-suppressing member 120. The embodiment of the present application is described by taking the example that the first stretch-suppressing member 110 can correspond to the second stretch-suppressing member 120 in a one-to-one manner. The orthographic projection of the first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130 and the orthographic projection of the corresponding second stretch-suppressing member 120 on the surface of the first side of the stretchable layer 130 at least partially overlap. In this way, the second stretch-suppressing member 120 can specifically relieve the stress on the first stretch-suppressing member 110 and reduce the deformation degree of the corresponding first stretch-suppressing member 110, thereby reducing the damage to the functional pattern layer at the first stretch-suppressing member 110, so as to protect the functional pattern layer at the first stretch-suppressing member 110. The materials of the first stretch-suppressing member 110 and the second stretch-suppressing member 120 can be the same or different.

[0095] In some embodiments, see Figure 3 , the second side of the stretchable layer 130 may have a plurality of grooves 133, the notches of each groove 133 may be located on the surface of the second side of the stretchable layer 130, and the second stretch-suppressing members 120 may be located in the grooves 133 one by one. In this way, along the thickness direction of the stretchable substrate 101, the second stretch-suppressing member 120 is spaced apart from the first stretch-suppressing member 110, so that the thickness of the first stretch-suppressing member 110 and the second stretch-suppressing member 120 are both small, so that the first stretch-suppressing member 110 and the second stretch-suppressing member 120 can limit the maximum stretching length of the corresponding stretchable substrate 101 while taking into account the flexibility of the first stretch-suppressing member 110 and the second stretch-suppressing member 120, so as to avoid the first stretch-suppressing member 110, the second stretch-suppressing member 120 and the stretchable layer 130 from peeling due to excessive deformation difference under the action of external force.

[0096] Exemplarily, the orthographic projection of the second stretch-suppressing member 120 on the surface of the first side of the stretchable layer 130 can cover the orthographic projection of the corresponding first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130, so that the area of ​​the second stretch-suppressing member 120 is greater than or equal to the area of ​​the corresponding second stretch-suppressing member 120. During the stretching process, the external force first acts on the second stretch-suppressing member 120 with a larger area, and the stress generated by the external force will be dispersed in various places of the second stretch-suppressing member 120 along the plane where the XY is located, thereby relieving the stress on the first stretch-suppressing member 110, thereby protecting the functional pattern layer at the first stretch-suppressing member 110. In addition, during the stretching process, the second stretch-suppressing member 120 with a larger area is less likely to be bent or stretched, and the second stretch-suppressing member 120 has a better ability to suppress stretching. The deformation generated by the second stretch-suppressing member 120 is smaller, so that the deformation generated by the first stretch-suppressing member 110 is smaller, so as to protect the functional pattern layer at the first stretch-suppressing member 110. Secondly, the first stretch-suppressing member 110 and the second stretch-suppressing member 120 sandwich part of the stretchable layer 130 in the middle, thereby suppressing the stretchability of the stretchable layer 130 located between the first stretch-suppressing member 110 and the second stretch-suppressing member 120, so that the first stretch-suppressing member 110, the second stretch-suppressing member 120 and the stretchable layer 130 located between the first stretch-suppressing member 110 and the second stretch-suppressing member 120 jointly form a stretching inhibition area to protect the functional pattern layer corresponding to the inhibition area.

[0097] Exemplarily, the orthographic projection of the second stretch-suppressing member 120 on the surface of the first side of the stretchable layer 130 can be circular, elliptical, polygonal (such as rectangular, diamond), ring, grid, etc. The embodiment of the present application does not limit the shape of the first stretch-suppressing member 110.

[0098] Exemplarily, the surface of the second stretch-suppressing member 120 facing away from the bottom wall of the groove 133 and the surface of the second side of the stretchable layer 130 can be flush, thereby reducing the difficulty of preparing the second stretch-suppressing member 120 and the stretchable layer 130. In addition, the stretchable layer 130 can also provide better protection for the second stretch-suppressing member 120.

[0099] In some embodiments, see Figure 4, the stretchable layer 130 may have a plurality of through holes 134, and along the thickness direction of the stretchable substrate 101, each through hole 134 may penetrate the stretchable layer 130, and the second stretch-suppressing members 120 are located in the through holes 134 one by one, and the second stretch-suppressing members 120 may be connected to the corresponding first stretch-suppressing members 110. In this way, along the thickness direction of the stretchable substrate 101, the extension length of the second stretch-suppressing members 120 is relatively long. During the stretching process, the external force first acts on the second stretch-suppressing members 120 located in the stretchable layer 130, and the second stretch-suppressing members 120 may disperse the external force along the thickness direction of the stretchable substrate 101, and disperse the external force on the stretchable substrate 101 into three-dimensional space, so as to relieve the stress of the stretchable substrate 101 on the XY plane, thereby relieving the stress of the first stretch-suppressing member 110 along the XY plane, thereby protecting the functional pattern layer at the first stretch-suppressing member 110. In addition, since the second stretch-suppressing member 120 penetrates the stretchable layer 130 along the thickness direction of the stretchable substrate 101, it is equivalent to forming a retaining wall in the stretchable layer 130, which can prevent the external force from being transmitted from one side of the retaining wall to the other side of the retaining wall. For example, the second stretch-suppressing member 120 can be set at the edge of the first stretch-suppressing member 110, so as to prevent the force outside the first stretch-suppressing member 110 from being transmitted toward the center of the first stretch-suppressing member 110, thereby relieving the stress on the first stretch-suppressing member 110 to protect the functional pattern layer at the first stretch-suppressing member 110.

[0100] Exemplarily, the shape of the cross section of the through hole 134 may be circular, elliptical, polygonal, cross-shaped, etc. The embodiment of the present application does not limit the shape of the cross section of the through hole 134 .

[0101] In an embodiment in which each second conductive line 152 is located on the surface of the first side of the stretchable layer 130 and a through hole 134 is provided in the stretchable layer 130 located in the non-display area 100b, each second conductive line 152 can be located outside the through hole 134, that is, the orthographic projection of the second conductive line 152 on the surface of the first side of the stretchable layer 130 does not overlap with the orthographic projection of the through hole 134 on the surface of the first side of the stretchable layer 130, so that the second conductive line 152 and the through hole 134 are staggered, thereby preventing the second conductive line 152 from entering the through hole 134 and being easily broken.

[0102] Exemplarily, along the direction from the second side to the first side of the stretchable layer 130, the cross-sectional area of ​​the second stretch-suppressing member 120 is equal everywhere, so that the external force can be evenly distributed on the second stretch-suppressing member 120 along the third direction Z, avoiding stress concentration at a certain point of the second stretch-suppressing member 120 and easily damaging the second stretch-suppressing member 120.

[0103] Illustratively, along the direction from the second side to the first side of the stretchable layer 130, the cross-sectional area of ​​the second stretch-suppressing member 120 can gradually increase, thereby reducing the difficulty of preparing the second stretch-suppressing member 120. In addition, the contact area between the second stretch-suppressing member 120 and the first stretch-suppressing member 110 is large, and the second stretch-suppressing member 120 can provide better support for the first stretch-suppressing member 110.

[0104] Exemplarily, the orthographic projection of the second stretch-suppressing member 120 on the surface of the first side of the stretchable layer 130 may be located within the orthographic projection of the corresponding first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130, so that it is easier to achieve the connection between the second stretch-suppressing member 120 and the first stretch-suppressing member 110, so that the second stretch-suppressing member 120 supports the first stretch-suppressing member 110. In addition, along the thickness direction of the stretchable substrate 101, the portion of the stretchable substrate 101 that does not overlap with the first stretch-suppressing member 110 has good stretchability, which can reduce the influence of the second stretch-suppressing member 120 on the stretchability of the portion of the stretchable substrate 101.

[0105] For example, see Figure 5 and Figure 6 , the second stretch-suppressing member 120 may include a first end 121 close to the first side of the stretchable layer 130, and a second end 122 close to the second side of the stretchable layer 130. The first end 121 may be connected to the first stretch-suppressing member 110. The cross-sectional area of ​​the second end 122 may be greater than the cross-sectional area of ​​the first end 121. In this way, the cross-sectional area of ​​the first end 121 is small, and the flexibility of the first stretch-suppressing member 110 and the first end 121 can be taken into account, so as to avoid the first stretch-suppressing member 110, the first end 121 and the stretchable layer 130 from peeling due to the large deformation difference under the action of external force. The structure composed of the first stretch-suppressing member 110 and the first end 121 is distributed in three-dimensional space, and the external force is dispersed in three-dimensional space, which reduces the force acting on the first stretch-suppressing member 110, thereby suppressing stretching. In addition, the cross-sectional area of ​​the second end 122 is larger, so that the second end 122 can better disperse the external force, and the deformation produced by the second end 122 is smaller, so as to better alleviate the deformation of the first tensile suppressing member 110 caused by the external force, thereby protecting the functional pattern layer at the first tensile suppressing member 110.

[0106] Exemplarily, the orthographic projection of the first end 121 on the surface of the first side of the stretchable layer 130 can be located within the orthographic projection of the corresponding first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130, thereby making it easier to achieve the connection between the first end 121 and the first stretch-suppressing member 110, so that the second stretch-suppressing member 120 supports the first stretch-suppressing member 110.

[0107] Exemplarily, at least a portion of the orthographic projection of the second end 122 on the surface of the first side of the stretchable layer 130 is located outside the orthographic projection of the corresponding first stretch-suppressing member 110 on the surface of the first side of the stretchable layer 130, so that at least a portion of the second end 122 is offset from the first stretch-suppressing member 110 along the third direction Z. During the stretching process, part of the external force acts on the first stretch-suppressing member 110 and propagates in three-dimensional space through the first end 121, that is, it is transmitted to the second end 122 along the third direction Z and dispersed at the second end 122. Another part of the external force acts on the surrounding area of ​​the second end 122 and dispersed at the second end 122, so that the stress generated by the external force will be more dispersed at the second end 122, and the second end 122 has a stronger ability to suppress stretching, thereby protecting the functional pattern layer at the first stretch-suppressing member 110.

[0108] In some embodiments, see Figure 5 , at least part of the second stretch-suppressing members 120 may be distributed in the non-display area 100b. In the non-display area 100b, the second stretch-suppressing member 120 may be disposed on at least one side of the stretchable layer 130 along the first direction X, and / or, the second stretch-suppressing member 120 may be disposed on at least one side of the stretchable layer 130 along the second direction Y. The embodiment of the present application is described by taking the second stretch-suppressing member 120 disposed in the first wiring portion 131 and the two second wiring portions 132 of the stretchable layer 130 as an example. In some examples, in the first wiring portion 131 and the two second wiring portions 132, there can be multiple second tension suppressing members 120, at least part of the multiple second tension suppressing members 120 are arranged at intervals along the extension direction of the first wiring portion 131, and at least part of the multiple second tension suppressing members 120 extend from the second wiring portion 132 to the first wiring portion 131, and the second tension suppressing members 120 located at both ends of the extension direction of the first wiring portion 131 are connected to the second tension suppressing member 120 located in the second wiring portion 132. The principle is similar to that of the first tension suppressing member 110 and will not be repeated. In other examples, the second tension suppressing members 120 located in the first wiring portion 131 and the two second wiring portions 132 can be an integrated structure. The principle is similar to that of the first tension suppressing member 110 and will not be repeated.

[0109] In some embodiments, see Figure 4, the same second tensile suppressing member 120 may include a plurality of sub-tensile suppressing members 120a, and the plurality of sub-tensile suppressing members 120a are arranged at intervals along the surface of the second side of the stretchable layer 130. In this way, in the embodiment where the second tensile suppressing member 120 is located in the through hole 134, the plurality of sub-tensile suppressing members 120a can better disperse the tensile stress in the Z direction, and prevent the first tensile suppressing member 110 from being stretched and broken, resulting in functional failure. In addition, the area of ​​a single sub-tensile suppressing member 120a is relatively small, which can better take into account the flexibility of the second tensile suppressing member 120, and prevent the deformation gap between the second tensile suppressing member 120 and the stretchable layer 130 from being too large and peeling off during the stretching process. See Figure 5 In the embodiment where the cross-sectional area of ​​the first end 121 of the second stretch-suppressing member 120 is smaller than the cross-sectional area of ​​the second end 122, the cross-sectional area of ​​the first end 121 of at least one sub-stretch-suppressing member 120a is smaller than the cross-sectional area of ​​the second end 122. Part of the external force acts on the first stretch-suppressing member 110, is sequentially transmitted to the first end 121 and the second end 122 along the third direction Z, and is dispersed at various locations of the second end 122 along the plane where XY is located, increasing the dispersion path of the part of the external force in the three-dimensional space, reducing the force acting on the first stretch-suppressing member 110, and thus suppressing the stretching.

[0110] It is understandable that the same second stretch-suppressing member 120 may be an integral structure, so that the second stretch-suppressing member 120 has a stronger ability to suppress stretching and better protects the functional pattern layer at the first stretch-suppressing member 110. In the embodiment where the second stretch-suppressing member 120 includes a first end 121 and a second end 122, the first end 121 of the second stretch-suppressing member 120 may have at least one hollow portion, and the hollow portion may be filled with the stretchable layer 130. Figure 6 For example, the hollow portion may be located in the first end 121, so that the flexibility of the first end 121 can be taken into account and the tensile stress can be better dispersed in the Z direction. The principle is similar to that the second tensile suppressing member 120 includes a plurality of sub-tensile suppressing members 120a, and will not be repeated. No hollow portion is provided in the second end 122, so that the area of ​​the second end 122 is larger, further increasing the dispersion path of the external force in space, reducing the force acting on the first tensile suppressing member 110, and thus suppressing the stretching.

[0111] In some embodiments, see Figure 4 , an auxiliary stretchable layer 140 may be provided on the second side of the stretchable layer 130, so that the auxiliary stretchable layer 140 protects the stretchable substrate 101 and ensures the stretchability of the stretchable substrate 101. Exemplarily, the elastic modulus of the auxiliary stretchable layer 140 is less than the elastic modulus of the first stretch-suppressing member 110 and / or the second stretch-suppressing member 120. The material of the auxiliary stretchable layer 140 may be the same as or different from that of the stretchable layer 130.

[0112] Figure 3 The preparation process of the stretchable substrate 101 can be as follows: first, on the supporting plate 200 ( Figure 6 An auxiliary stretchable layer 140 is formed on a substrate (such as a glass plate, the carrier plate 200 can be removed after the stretchable display panel 100 is prepared), and then a second stretch-suppressing member 120 is prepared on the auxiliary stretchable layer 140, and then a stretchable layer 130 is formed on a side of the second stretch-suppressing member 120 away from the auxiliary stretchable layer 140, and then a first stretch-suppressing member 110 is formed on a side of the stretchable layer 130 away from the auxiliary stretchable layer 140. In the embodiment where the auxiliary stretchable layer 140 is not provided, the second stretch-suppressing member 120 and the stretchable layer 130 are in direct contact with the carrier plate 200. Since the adhesion between the second stretch-suppressing member 120, the stretchable layer 130 and the carrier plate 200 may be different, the second stretch-suppressing member 120, the stretchable layer 130 and the carrier plate 200 may have different degrees of difficulty in peeling off. When the stretchable substrate 101 is separated from the carrier plate 200, the second stretch-suppressing member 120 and the carrier plate 200, and the stretchable layer 130 and the carrier plate 200 may have different degrees of separation, which may cause the second stretch-suppressing member 120 and the stretchable layer 130 to be pulled and peeled off. Therefore, by providing the auxiliary stretchable layer 140, the above-mentioned peeling phenomenon can be avoided, so that the structural stability of the stretchable substrate 101 can be ensured during the separation process of the carrier plate 200 and the stretchable substrate 101. For example, when the second stretch-suppressing member 120 and the supporting plate 200 are inorganic materials, and the stretchable layer 130 and the auxiliary stretchable layer 140 are organic materials, the separation between the second stretch-suppressing member 120 and the supporting plate 200 is more difficult than the separation between the auxiliary stretchable layer 140 and the supporting plate 200. By setting the auxiliary stretchable layer 140, the difficulty of separating the stretchable substrate 101 and the supporting plate 200 can be reduced.

[0113] For example, the auxiliary stretchable layer 140 and / or the stretchable layer 130 may be formed by coating and curing. The thickness of the auxiliary stretchable layer 140 and / or the stretchable layer 130 may be 8 μm. The first tensile suppressing member 110 and / or the second tensile suppressing member 120 may be formed by deposition, photolithography, etc., and the deposition process may include an atomic layer deposition process (Atomic Layer Deposition, referred to as ALD), a physical vapor deposition process (Physical Vapor Deposition, referred to as PVD) or a chemical vapor deposition process (Chemical Vapor Deposition, referred to as CVD).

[0114] It should be noted here that the numerical values ​​and numerical ranges involved in the embodiments of the present application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A stretchable display panel, characterized in that: It comprises a display area and a non-display area, wherein the non-display area is located at least partially outside the display area, and the display area comprises a plurality of island structures and bridge structures, and two adjacent island structures are connected by the bridge structure; The stretchable display panel comprises a stretchable layer, a plurality of first stretch-suppressing members and a plurality of second stretch-suppressing members, and along a thickness direction of the stretchable display panel, the stretchable layer comprises a first side and a second side which are arranged opposite to each other; The island structure, the bridge structure and the first stretch-suppressing member are all located on the first side of the stretchable layer, and each of the second stretch-suppressing members is located in the stretchable layer. The orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-suppressing member is located between the stretchable layer and the island structure.

2. The stretchable display panel according to claim 1, characterized in that: The second side of the stretchable layer has a plurality of grooves, the notches of each of the grooves are located on the surface of the second side of the stretchable layer, and the second stretch-inhibiting members are located in the grooves one by one; Preferably, the orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer covers the orthographic projection of the corresponding first stretch-suppressing member on the surface of the first side of the stretchable layer; Preferably, a surface of the second stretch-suppressing member that is away from the groove bottom wall of the groove is flush with a surface of the second side of the stretchable layer.

3. The stretchable display panel according to claim 1, characterized in that: The stretchable layer has a plurality of through holes, and each of the through holes penetrates the stretchable layer along the thickness direction of the stretchable display panel. The second stretch-suppressing members are located in the through holes one by one, and the second stretch-suppressing members are connected to the corresponding first stretch-suppressing members.

4. The stretchable display panel according to claim 3, characterized in that: Along the direction from the second side to the first side of the stretchable layer, the cross-sectional area of ​​the second stretch-inhibiting member is equal everywhere or gradually increases; Preferably, an orthographic projection of the second stretch-suppressing member on the surface of the first side of the stretchable layer is located within an orthographic projection of the corresponding first stretch-suppressing member on the surface of the first side of the stretchable layer.

5. The stretchable display panel according to claim 3, characterized in that: The second stretch-suppressing member comprises a first end close to the first side of the stretchable layer, and a second end close to the second side of the stretchable layer, wherein the cross-sectional area of ​​the second end is greater than the cross-sectional area of ​​the first end; Preferably, the orthographic projection of the first end on the surface of the first side of the stretchable layer is located within the orthographic projection of the corresponding first stretch-inhibiting member on the surface of the first side of the stretchable layer; Preferably, at least a portion of an orthographic projection of the second end on the surface of the first side of the stretchable layer is located outside an orthographic projection of a corresponding first stretch-inhibiting member on the surface of the first side of the stretchable layer.

6. The stretchable display panel according to any one of claims 1 to 5, characterized in that: The stretchable layer located in the non-display area includes a first wiring portion and two second wiring portions, and the second wiring portions are located at two opposite ends of an extension direction of the first wiring portion; The stretchable display panel located in the non-display area includes a plurality of conductive lines, each of which is located on the first side of the stretchable layer, at least part of the plurality of conductive lines is arranged at intervals along the extension direction of the first wiring portion, and all extend from the second wiring portion to the first wiring portion; Preferably, the first tensile strength suppressing member is also located on a first side of the first wiring portion and / or the second wiring portion; Preferably, in the non-display area, there are a plurality of first stretch-suppressing members, the conductive wires are connected to the first stretch-suppressing members in a one-to-one correspondence, and the orthographic projection of the conductive wire on the surface of the first side of the stretchable layer is located within the orthographic projection of the first stretch-suppressing member on the surface of the first side of the stretchable layer; Preferably, in the non-display area, there are a plurality of the first stretch-suppressing members, a gap is provided between each two adjacent first stretch-suppressing members, and the conductive lines are located in the gap in a one-to-one correspondence; Preferably, the first tension-suppressing member located on the first routing portion and the two second routing portions is an integral structure, and / or the second tension-suppressing member located on the first routing portion and the two second routing portions is an integral structure.

7. The stretchable display panel according to claim 6, characterized in that: The stretchable layer has a plurality of through holes, at least some of the through holes are located in the non-display area, each of the conductive lines is located on the surface of the first side of the stretchable layer, and each of the conductive lines is located outside the through holes.

8. The stretchable display panel according to any one of claims 1 to 5, characterized in that: The same second tensile suppressing member includes a plurality of sub-tensile suppressing members, and the plurality of sub-tensile suppressing members are arranged at intervals along the surface of the second side of the stretchable layer; Preferably, the second side of the stretchable layer is provided with an auxiliary stretchable layer; Preferably, the elastic modulus of the first stretch-suppressing member and / or the second stretch-suppressing member is greater than the elastic modulus of the stretchable layer.

9. The stretchable display panel according to any one of claims 1 to 5, characterized in that: The first stretch-suppressing member is also located between the stretchable layer and the bridge structure.

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

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