Stretchable display panel and stretchable display device

Abstract

The application provides a stretchable display panel and a stretchable display device. The stretchable display panel comprises a display area and a non-display area, and the display area comprises a plurality of island structures and bridge structures. Two adjacent island structures are connected by a bridge structure. The stretchable display panel comprises a stretchable layer, a plurality of first stretch-preventing members and a plurality of second stretch-preventing members. The island structures, the bridge structures and the first stretch-preventing members are located on a first side of the stretchable layer, each second stretch-preventing member is located in the stretchable layer, the orthographic projection of the first stretch-preventing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-preventing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-preventing members are located between the stretchable layer and the island structures. Therefore, the stretchable display panel and the stretchable display device provided by the application can alleviate the situation that the stretchable display panel is excessively stretched, thereby reducing or avoiding the situation that the functional pattern layer of the stretchable display panel is excessively stretched and damaged.

Description

TECHNICAL FIELD

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

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

[0003] In the related art, the stretchable display panel can include a plurality of island structures and a plurality of bridge structures, each adjacent two island structures can be connected by a bridge structure, and the bridge structure can include a metal trace, which can electrically connect the adjacent island structures. During the stretching process of the display panel, the display panel is subjected to external force, resulting in deformation of the display panel due to tensile stress.

[0004] However, the above display panel is easily damaged during stretching. SUMMARY

[0005] In view of at least one of the above technical problems, the embodiments of the present application provide a stretchable display panel and a stretchable display device, which can alleviate the situation of overstretching of the stretchable display panel, thereby reducing or avoiding the situation of damage of the functional pattern layer of the stretchable display panel due to overstretching.

[0006] To achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions:

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

[0008] The stretchable display panel provided by the embodiments of the present application comprises a display area and a non-display area, the non-display area is located at least part of the periphery of the display area, 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-inhibiting pieces and a plurality of second stretch-inhibiting pieces; 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-inhibiting piece are all located on the first side of the stretchable layer, each second stretch-inhibiting piece is located in the stretchable layer, the orthographic projection of the first stretch-inhibiting piece on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-inhibiting piece on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-inhibiting pieces are located between the stretchable layer and the island structure. In the stretching process of the stretchable display panel, the second stretch-inhibiting piece can be used to disperse the external force on the first stretch-inhibiting piece, thereby relieving the stress on the first stretch-inhibiting piece, avoiding the first stretch-inhibiting piece and the stretchable display panel from being excessively stretched, thereby reducing or avoiding the case that the functional pattern layer at the first stretch-inhibiting piece is damaged due to being excessively stretched, reducing or avoiding the case that the functional pattern layer of the stretchable display panel is damaged due to being excessively stretched, prolonging 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 in the stretching process.

[0009] In a possible implementation, the second side of the stretchable layer has a plurality of grooves, the groove opening of each groove is located on the surface of the second side of the stretchable layer, and each second stretch-inhibiting piece is located in a corresponding groove.

[0010] It can be implemented that the orthographic projection of the second stretch-inhibiting piece on the surface of the first side of the stretchable layer covers the orthographic projection of the corresponding first stretch-inhibiting piece on the surface of the first side of the stretchable layer.

[0011] It can be implemented that the surface of the second stretch-inhibiting piece away from the groove bottom wall side is flush with the surface of the second side of the stretchable layer.

[0012] In this way, the first stretch-inhibiting piece and the second stretch-inhibiting piece sandwich part of the stretchable layer, thereby inhibiting the stretchability of the stretchable layer located between the first stretch-inhibiting piece and the second stretch-inhibiting piece, so that the first stretch-inhibiting piece, the second stretch-inhibiting piece and the stretchable layer located between the first stretch-inhibiting piece and the second stretch-inhibiting piece jointly form a stretch-inhibiting area, thereby protecting the functional pattern layer corresponding to the inhibiting area.

[0013] In a possible implementation, the stretchable layer has a plurality of through holes, along the thickness direction of the stretchable display panel, each through hole penetrates the stretchable layer, each second stretch-inhibiting piece is located in a corresponding through hole, and the second stretch-inhibiting piece is connected with the corresponding first stretch-inhibiting piece.

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

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

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

[0017] In this way, the cross-sectional area of the second stretch-preventing member is equal everywhere, so that the external force can be uniformly distributed on the second stretch-preventing member, avoiding stress concentration in a certain place of the second stretch-preventing member and easily damaging the second stretch-preventing member. The cross-sectional area of the second stretch-preventing member can gradually increase along the direction from the second side to the first side of the stretchable layer, which can reduce the difficulty of manufacturing the second stretch-preventing member.

[0018] In a possible implementation, the second stretch-preventing 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 the cross-sectional area of the second end is greater than that of the first end.

[0019] It can be implemented 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-preventing member on the surface of the first side of the stretchable layer.

[0020] It can be implemented 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-preventing 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-preventing member is small, thereby making the first stretch-preventing member and the first end can limit the stretching of the corresponding stretchable substrate, while taking into account the flexibility of the first stretch-preventing member and the first end, avoiding the peeling between the first stretch-preventing member, the first end and the stretchable layer due to the large difference in deformation under the action of the 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 of the second end is small, so as to better relieve the deformation of the first stretch-preventing member caused by the external force, thereby protecting the functional pattern layer at the first stretch-preventing member.

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

[0023] The stretchable display panel located in the non-display area includes multiple conductive lines, each of which is located on the first side of the stretchable layer. At least a portion of the multiple conductive lines are spaced apart along the extension direction of the first wiring portion, and all of them extend along the direction from the second wiring portion to the first wiring portion.

[0024] It is possible that the first tensioning member is also located on the first side of the first wiring section and / or the second wiring section;

[0025] In the non-display area, there are multiple first stretching members, and the conductive lines are connected one-to-one with the first stretching members. The orthographic projection of the conductive lines on the first side of the stretchable layer is located within the orthographic projection of the first stretching member on the first side of the stretchable layer.

[0026] In this way, the flexibility of the first tension member at both the first wiring section and the two second wiring sections can be taken into account, reducing the possibility of the first tension member and the stretchable layer peeling off due to excessive deformation difference under external force.

[0027] In the non-display area, there are multiple first stretching members, with a gap between each pair of adjacent first stretching members, and the conductive lines are located in the gaps one by one.

[0028] It is possible to have the first tensioning member located on the first wiring section and the two second wiring sections as an integral structure, and / or, the second tensioning member located on the first wiring section and the two second wiring sections as an integral structure.

[0029] This simplifies the fabrication of the first and / or second tensioning members located on the first wiring section and the two second wiring sections.

[0030] In one possible implementation, the stretchable layer has a plurality of through holes, at least some of which are located in the non-display area, and 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 holes.

[0031] This allows the conductive wires and through holes to be staggered, thus preventing the conductive wires from entering the through holes and easily breaking.

[0032] In one possible implementation, the same second stretching member includes a plurality of sub-stretching members, which are spaced apart along the second side of the stretchable layer.

[0033] It is possible to have an auxiliary stretchable layer on the second side of the stretchable layer;

[0034] It is possible to achieve that the elastic modulus of the first tension member and / or the second tension member is greater than the elastic modulus of the stretchable layer.

[0035] In this way, the area of the single sub-stretching-preventing piece is small, the flexibility of the second stretching-preventing piece can be well considered, and the deformation gap between the second stretching-preventing piece and the stretchable layer during the stretching process is prevented from being too large to cause peeling.

[0036] In a possible implementation, the first stretching-preventing piece is further located between the stretchable layer and the bridge structure.

[0037] The second aspect of the embodiments of the present application provides a stretchable display device, including the stretchable display panel in the first aspect.

[0038] The stretchable display device provided by the embodiments of the present application includes a stretchable display panel, the stretchable display panel includes a display area and a non-display area, the non-display area is located at least part of the periphery of the display area, the display area includes a plurality of island structures and a bridge structure, and two adjacent island structures are connected by the bridge structure; the stretchable display panel includes a stretchable layer, a plurality of first stretching-preventing pieces and a plurality of second stretching-preventing pieces, along the thickness direction of the stretchable display panel, the stretchable layer includes a first side and a second side arranged oppositely; the island structure, the bridge structure and the first stretching-preventing piece are all located on the first side of the stretchable layer, each second stretching-preventing piece is located in the stretchable layer, the orthographic projection of the first stretching-preventing piece on the surface of the first side of the stretchable layer and the orthographic projection of the second stretching-preventing piece on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretching-preventing pieces are located between the stretchable layer and the island structure. During the stretching process of the stretchable display panel, the second stretching-preventing piece can be used to disperse the external force on the first stretching-preventing piece, thereby relieving the stress on the first stretching-preventing piece, avoiding the first stretching-preventing piece and the stretchable display panel being stretched too much, thereby reducing or avoiding the functional pattern layer at the first stretching-preventing piece being damaged due to being stretched too much, reducing or avoiding the functional pattern layer of the stretchable display panel being damaged due to being stretched too much, prolonging 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 structure of the present application and other inventive purposes and benefits will be more obvious and easy to understand through the description of the preferred embodiments in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0041] Figure 1 A top view of the stretchable display panel provided by the embodiments of the present application;

[0042] Figure 2 A structure schematic diagram of the stretchable substrate formed on the bearing plate according to an embodiment of the present application is provided;

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

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

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

[0046] Figure 6 A cross-sectional view of the stretchable display panel formed on the bearing plate according to an embodiment of the present application is provided;

[0047] Figure 7 A top view of the stretchable substrate according to an embodiment of the present application is provided;

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

[0049] Figure 9 Another top view of the stretchable substrate according to an embodiment of the present application is provided.

[0050] Explanation of reference signs:

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

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

[0053] 110: first stretch-preventing member; 111: gap;

[0054] 112: island stretch-preventing member; 113: bridge stretch-preventing member;

[0055] 120: second stretch-preventing member; 120a: sub stretch-preventing member;

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

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

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

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

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

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

[0062] 162: light emitting device; 200: bearing plate. DETAILED DESCRIPTION

[0063] In the related art, the stretchable display panel has high flexibility, and a user can perform bending or stretching operation on the stretchable display panel without affecting the display function of the stretchable display panel. In addition, after the user removes the external force, the stretchable display panel can return to the initial state.

[0064] The stretchable display panel can include a plurality of island structures and a plurality of bridge structures, each two adjacent island structures being connected by a bridge structure, and the bridge structure can include a metal trace electrically connecting the adjacent island structures. The island structure can include a driving circuit and a light emitting device, and the driving circuit is configured 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 external force, resulting in deformation of the stretchable display panel due to tensile stress.

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

[0066] To solve at least one of the above technical problems, the embodiments of the present application provide a stretchable display panel and a stretchable display device. The stretchable display panel includes a display area and a non-display area, the non-display area being located at least part of the periphery of the display area, the display area including a plurality of island structures and bridge structures, and each two adjacent island structures being connected by a bridge structure. The stretchable display panel includes a stretchable layer, a plurality of first stretch-preventing members, and a plurality of second stretch-preventing members. In the thickness direction of the stretchable display panel, the stretchable layer includes a first side and a second side arranged oppositely. The island structure, the bridge structure, and the first stretch-preventing member are located on the first side of the stretchable layer, and each second stretch-preventing member is located in the stretchable layer. The orthographic projection of the first stretch-preventing member on the surface of the first side of the stretchable layer and the orthographic projection of the second stretch-preventing member on the surface of the first side of the stretchable layer at least partially overlap, and at least part of the first stretch-preventing members are located between the stretchable layer and the island structure. During the stretching process of the stretchable substrate, the second stretch-preventing member can be used to disperse the external force on the first stretch-preventing member, thereby relieving the stress on the first stretch-preventing member, avoiding the first stretch-preventing member and the stretchable display panel from being over-stretched, and reducing or avoiding the case that the functional pattern layer at the first stretch-preventing member is damaged by over-stretching, thereby reducing or avoiding the case that the functional pattern layer of the stretchable display panel is damaged by over-stretching, prolonging 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 objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0068] The present embodiment provides a stretchable display device, which can include electronic paper, mobile phones, tablets, televisions, displays, notebooks, digital photo frames, smart bracelets, smart watches, super personal computers, navigation devices, etc.

[0069] The following will be combined with Figures 1-9 The stretchable display panel 100 provided by the embodiments of the present application is described.

[0070] The stretchable display panel 100 can be applied to the stretchable display device in the above embodiments. Referring to Figure 1 The stretchable display panel 100 can 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 can be arranged adjacent to the display area 100a. The non-display area 100b can be located at least one side of the display area 100a. For example, the non-display area 100b can be arranged around part or all of the outer periphery of the display area 100a. The non-display area 100b of one side of the stretchable display panel 100 along the second direction Y can include a fan-out area and a binding area, the fan-out area can be located between the binding area and the display area 100a, and the stretchable display panel 100 of the binding area can be used to bind a driving chip.

[0071] The embodiments of the present application take the non-display area 100b arranged around the outer periphery of the display area 100a as an example for description.

[0072] Referring to Figure 2 and Figure 3 The stretchable display panel 100 can include a first direction X, a second direction Y and a third direction Z, 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 can be perpendicular to each other. For example, the first direction X can be the width direction of the stretchable display panel 100, the second direction Y can be the length direction of the stretchable display panel 100, and the third direction Z can be the thickness direction of the stretchable display panel 100. In the embodiments of the present application, the length, width and thickness are only for the convenience of description, and do not mean any limitation on the size. For example, the width can be greater than, equal to or less than the length. Among them, the stretchable display panel 100 can be stretched and contracted along any direction in the XY plane.

[0073] In some embodiments, referring to Figures 4-6 The stretchable display panel 100 can include a stretchable substrate 101, which can provide support and protection for the rest of the structure layers to be subsequently arranged. The stretchable substrate 101 can include a stretchable layer 130, which can be bent, stretched, contracted, and the like. The stretchable layer 130 can be made of a flexible material, for example, the material of the stretchable layer 130 can include polydimethylsiloxane (PDMS) or polyurethane (PU) or the like organic material.

[0074] It can be implemented that the stretchable layer 130 can have a certain elasticity and toughness. The stretchable layer 130 can restore to the original state after the external force is removed, that is, reversible stretching and contraction.

[0075] Exemplarily, along the thickness direction of the stretchable substrate 101, the stretchable layer 130 can include oppositely arranged first and second sides. The first side can be towards the light-emitting side of the stretchable display panel 100, and the second side can be towards the back light side of the stretchable display panel 100. The light-emitting side of the stretchable display panel 100 is the side for displaying a picture, and the back light side is the other side 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 the upper side in Figure 3 , and the second side of the stretchable layer 130 is the lower side in Figure 3 .

[0076] Exemplarily, referring to Figure 7 The edge of the stretchable layer 130 can include two second trace portions 132 arranged at intervals along the first direction X, and a first trace portion 131 located at one side of the second direction Y. The two second trace portions 132 can be respectively located at opposite ends of the extension direction (the first direction X) of the first trace portion 131. Among them, the first trace portion 131 and the second trace portion 132 can be located in the non-display area 100b, and the first trace portion 131 can be located in the fan-out area and / or the binding area.

[0077] The first stretch-preventing member 110 provided by the embodiments of the present application is described below.

[0078] Referring to Figure 2 and Figure 3 The stretchable substrate 101 can include a first stretch-preventing member 110, and the first stretch-preventing member 110 can be multiple. The multiple first stretch-preventing members 110 are arranged along the surface of the first side of the stretchable layer 130. Each first stretch-preventing member 110 can be located on the first side of the stretchable layer 130.

[0079] For example, the first stretch-inhibiting member 110 can be made of an organic material such as polyimide (PI), polyacrylate, or polyacetate, or an inorganic material.

[0080] For example, the first stretch-inhibiting member 110 can be made of an organic material such as polyimide (PI), polyacrylate, or polyacetate, or an inorganic material.

[0081] The elastic modulus is an index for measuring the difficulty of elastic deformation of a material. The greater the value, the greater the stress required to cause a certain elastic deformation of the material, that is, the greater the rigidity of the material.

[0082] In some embodiments, referring to FIG. 1, the first stretch-inhibiting member 110 can be arranged in the display area 100a. Figure 2 and Figure 3 In the display area 100a, the plurality of first stretch-inhibiting members 110 can include a plurality of island stretch-inhibiting members 112 arranged at intervals. For example, the island stretch-inhibiting members 112 can be arranged in an array. The side of the island stretch-inhibiting member 112 facing away from the stretchable layer 130 can be provided with an island structure 160, and the island structure 160 can include one or more pixel units. That is, the island stretch-inhibiting member 112 is located between the stretchable layer 130 and the island structure 160. Each pixel unit can 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. The light-emitting device 162 can be an organic light-emitting diode (OLED) or a micro light-emitting diode (Micro LED or μLED), etc. The driving circuit 161 can include a thin film transistor (TFT) and a capacitor structure, etc. The island stretch-inhibiting member 112 can alleviate the situation that the driving circuit 161, the light-emitting device 162, etc. at the first stretch-inhibiting member 110 are damaged by being stretched too much, to protect the driving circuit 161, the light-emitting device 162, etc. at the first stretch-inhibiting 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, referring to Figure 2 and Figure 3 In the display area 100a, the plurality of first stretch-suppressing members 110 can include a plurality of bridge stretch-suppressing members 113, at least one bridge stretch-suppressing member 113 can be arranged between each two adjacent island stretch-suppressing members 112 and connected by the bridge stretch-suppressing member 113. The side of the bridge stretch-suppressing member 113 away from the stretchable layer 130 can be provided with a bridge structure, and one bridge structure can include at least one first conductive line 151. That is, the bridge stretch-suppressing member 113 can be located between the stretchable layer 130 and the bridge structure. The pixel units of the island structures 160 on each two adjacent island stretch-suppressing members 112 can be connected and electrically conductive through the first conductive line 151. For example, the bridge stretch-suppressing member 113 can be in a curved shape to cope with stretching, so that the stretchable display panel 100 has better stretchability. When the display panel is stretched, the bridge stretch-suppressing member 113 will be deformed. When the external force is removed, the bridge stretch-suppressing member 113 can return to the original undeformed state. In addition, since the bridge stretch-suppressing member 113 has a high elastic modulus, it will not be easily stretched to a certain extent, thereby relieving the situation that the first conductive line 151 at the bridge stretch-suppressing member 113 is damaged by being excessively stretched, forming protection for 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 other embodiments, the first conductive line 151 can be located on the side of the stretchable layer 130 facing the bridge stretch-suppressing member 113. For example, at least part of the first conductive line 151 can be located between the bridge stretch-suppressing member 113 and the stretchable layer 130. Alternatively, the orthographic projection of the bridge stretch-suppressing 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 can be understood that in the display area 100a, the first stretch-suppressing member 110 can be provided with the island stretch-suppressing member 112 or the bridge stretch-suppressing member 113, or the first stretch-suppressing member 110 can be provided with both the island stretch-suppressing member 112 and the bridge stretch-suppressing member 113.

[0086] In some embodiments, at least part of the number of first stretch-suppressing members 110 can be distributed in the non-display area 100b. In the non-display area 100b, the first stretch-suppressing member 110 can be arranged on at least one side of the stretchable layer 130 along the first direction X, and / or the first stretch-suppressing member 110 can be arranged on at least one side of the stretchable layer 130 along the second direction Y. For example, the first stretch-suppressing member 110 can be arranged on the first side of the first wiring part 131 and / or the two second wiring parts 132. The embodiments of the present application are described by taking an example that the first stretch-suppressing member 110 is arranged on the first wiring part 131 and the two second wiring parts 132 of the stretchable layer 130.

[0087] For example, referring to Figure 8 The stretchable display panel 100 located in the non-display area 100b can include a plurality of conductive lines (i.e., second conductive lines 152), which can include at least one of a data line, a power line, a scan line, etc. Each of the second conductive lines 152 can be located on the first side of the stretchable layer 130, at least part of the plurality of second conductive lines 152 can be arranged at intervals along the extension direction of the first trace portion 131, and at least part of the plurality of second conductive lines 152 can extend in the direction from the second trace portion 132 to the first trace portion 131. In the non-display area 100b, the second conductive lines 152 can be located on the side of the stretchable layer 130 facing the first stretch-suppression member 110, for example, at least part of the second conductive lines 152 can be located between the first stretch-suppression member 110 and the stretchable layer 130, or the orthographic projection of the first stretch-suppression 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 lines 152 can be located on the side of the first stretch-suppression member 110 away from the stretchable layer 130.

[0088] In some examples, referring to Figure 9In the non-display area 100b, the first stretch-preventing member 110 can be provided on the first wiring portion 131 and the two second wiring portions 132. At least part of the plurality of first stretch-preventing members 110 can be arranged along the extension direction of the first wiring portion 131, and at least part of the plurality of first stretch-preventing members 110 can extend along the direction from the second wiring portion 132 to the first wiring portion 131. The first stretch-preventing member 110 at the two ends of the first wiring portion 131 in the extension direction can be connected to the first stretch-preventing member 110 on the second wiring portion 132. A gap 111 can be provided between each two adjacent first stretch-preventing members 110. For example, the second conductive wire 152 can be connected to the first stretch-preventing member 110 one-to-one, and the orthographic projection of the second conductive wire 152 on the first side of the stretchable layer 130 is located in the orthographic projection of the first stretch-preventing member 110 on the first side of the stretchable layer 130. The area of the first stretch-preventing member 110 is greater than or equal to the area of the corresponding second conductive wire 152, and the second conductive wire 152 is covered by the first stretch-preventing member 110. In the stretching process, the external force first acts on the first stretch-preventing member 110 with a larger area, and the stress generated by the external force is dispersed in various parts of the first stretch-preventing member 110, thereby relieving the stress on the second conductive wire 152 and preventing the second conductive wire 152 from being damaged by excessive stretching. In addition, due to the large area of the first stretch-preventing member 110, the first stretch-preventing member 110 has good stretch-preventing ability, and the first stretch-preventing member 110 is not easy to be bent or stretched in the stretching process of the stretchable substrate 101, and the deformation of the first stretch-preventing member 110 is small, so that the deformation of the second conductive wire 152 is small, thereby relieving the situation that the second conductive wire 152 is damaged by excessive stretching, and protecting the second conductive wire 152. Alternatively, the second conductive wire 152 can be located in the gap 111 one-to-one. In the stretching process, the first stretch-preventing member 110 can disperse the external force in various parts of the first stretch-preventing 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, part of the second conductive wire 152 can be located in the orthographic projection of the first stretch-preventing member 110 on the first side of the stretchable layer 130. Another part of the second conductive wire 152 can be located in the gap 111. The principle has been described and will not be repeated.

[0089] In other examples, referring to Figure 7 and Figure 8In the non-display region 100b, the first stretch-resisting members 110 on the first routing portion 131 and the two second routing portions 132 can be in an integrated structure, so that the manufacturing difficulty of the first stretch-resisting members 110 on the first routing portion 131 and the two second routing portions 132 can be simplified. For example, the orthographic projection of the second conductive wire 152 on the first side of the stretchable layer 130 can be located within the orthographic projection of the first stretch-resisting member 110 on the first side of the stretchable layer 130. Compared with arranging multiple first stretch-resisting members 110 on the first routing portion 131 and the two second routing portions 132, the integrated first stretch-resisting member 110 has a larger area, so that the second conductive wire 152 can be better protected.

[0090] It can be understood that at least part of the first stretch-resisting members 110 can be distributed in the display region 100a. In the display region 100a, the first stretch-resisting members 110 can include at least one of the island stretch-resisting members 112 and the bridge stretch-resisting members 113. For example, part of the first stretch-resisting members 110 can be distributed in the display region 100a, and the other part of the first stretch-resisting members 110 can be distributed in the non-display region 100b. Alternatively, all of the first stretch-resisting members 110 can be distributed in the display region 100a. Alternatively, all of the first stretch-resisting members 110 can be distributed in the non-display region 100b.

[0091] The second stretch-resisting member 120 provided by the embodiments of the present application is described below.

[0092] Referring to Figures 3-5The stretchable substrate 101 can include a second stretch inhibitor 120, and the second stretch inhibitor 120 can be multiple. The multiple second stretch inhibitors 120 are arranged along the surface of the second side of the stretchable layer 130. Each second stretch inhibitor 120 can be located in the stretchable layer 130, while the first stretch inhibitor 110 is located outside the stretchable layer 130. In the stretching process, the stretchable layer 130 deforms, and the external force is more likely to act on the second stretch inhibitor 120 through the stretchable layer 130. The second stretch inhibitor 120 can be used to disperse the external force on the first stretch inhibitor 110, thereby relieving the stress on the first stretch inhibitor 110, reducing the deformation of the first stretch inhibitor 110, and reducing the damage caused by the overstretching of the functional pattern layer at the first stretch inhibitor 110. Thus, the functional pattern layer at the first stretch inhibitor 110 is protected, and the reliability of the stretchable substrate 101 and the stretchable display panel 100 in the stretching process is improved. In addition, compared with arranging the second stretch inhibitor 120 on the first side of the stretchable layer 130, the layout of the first stretch inhibitor 110 can be avoided, and the density of the stretch inhibitors (the first stretch inhibitor 110 and the second stretch inhibitor 120) arranged on the first side of the stretchable layer 130 can also be avoided. The stretchability of the stretchable substrate 101 can be affected. Secondly, the second stretch inhibitor 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 inhibitor 120 in the stretching process, and relieve the external force transmitted by the stretchable layer 130 to the first stretch inhibitor 110. Thus, the deformation of the first stretch inhibitor 110 is reduced, and the functional pattern layer at the first stretch inhibitor 110 is protected.

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

[0094] For example, the second tensile resistance member 120 can have a greater elastic modulus than the stretchable layer 130. In this way, the second tensile resistance member 120 has a certain tensile resistance capability, and is less likely to be bent or stretched during the stretching of the stretchable substrate 101, so as to limit the maximum stretching length of the stretchable substrate 101 at the second tensile resistance member 120. For example, one first tensile resistance member 110 can correspond to at least one second tensile resistance member 120. In the embodiments of the present application, the first tensile resistance member 110 can correspond to the second tensile resistance member 120 one by one. The orthographic projection of the first tensile resistance member 110 on the first side of the stretchable layer 130 and the orthographic projection of the corresponding second tensile resistance member 120 on the first side of the stretchable layer 130 at least partially overlap. In this way, the second tensile resistance member 120 can specifically alleviate the stress on the first tensile resistance member 110, reduce the deformation degree of the corresponding first tensile resistance member 110, so as to reduce the damage to the functional pattern layer at the first tensile resistance member 110, thereby protecting the functional pattern layer at the first tensile resistance member 110. The materials of the first tensile resistance member 110 and the second tensile resistance member 120 can be the same or different.

[0095] In some embodiments, referring to Figure 3 The second side of the stretchable layer 130 can have a plurality of grooves 133, and the opening of each groove 133 can be located on the surface of the second side of the stretchable layer 130. The second tensile resistance member 120 can correspond to the groove 133 one by one. In this way, the second tensile resistance member 120 is spaced apart from the first tensile resistance member 110 along the thickness direction of the stretchable substrate 101, so that the thicknesses of the first tensile resistance member 110 and the second tensile resistance member 120 are small. In this way, the first tensile resistance member 110 and the second tensile resistance member 120 can limit the maximum stretching length of the corresponding stretchable substrate 101 while considering the flexibility of the first tensile resistance member 110 and the second tensile resistance member 120, so as to avoid the first tensile resistance member 110, the second tensile resistance member 120 and the stretchable layer 130 from being peeled off due to a large deformation difference under the action of an external force.

[0096] For example, the second stretch-inhibiting member 120 can have an area greater than or equal to the area of the corresponding second stretch-inhibiting member 120. During the stretching process, the external force first acts on the second stretch-inhibiting member 120 with a larger area, and the stress generated by the external force is dispersed to all parts of the second stretch-inhibiting member 120 along the XY plane, thereby relieving the stress on the first stretch-inhibiting member 110 and protecting the functional pattern layer at the first stretch-inhibiting member 110. In addition, the second stretch-inhibiting member 120 with a larger area is less likely to be bent or stretched during the stretching process, and the second stretch-inhibiting member 120 has better stretch-inhibiting ability, and the deformation of the second stretch-inhibiting member 120 is smaller, thereby making the deformation of the first stretch-inhibiting member 110 smaller to protect the functional pattern layer at the first stretch-inhibiting member 110. Secondly, the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 sandwich part of the stretchable layer 130 therebetween, thereby inhibiting the stretchability of the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120, so that the first stretch-inhibiting member 110, the second stretch-inhibiting member 120, and the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 together form a stretch-inhibiting region to protect the corresponding functional pattern layer.

[0097] For example, the second stretch-inhibiting member 120 can have an area greater than or equal to the area of the corresponding second stretch-inhibiting member 120. During the stretching process, the external force first acts on the second stretch-inhibiting member 120 with a larger area, and the stress generated by the external force is dispersed to all parts of the second stretch-inhibiting member 120 along the XY plane, thereby relieving the stress on the first stretch-inhibiting member 110 and protecting the functional pattern layer at the first stretch-inhibiting member 110. In addition, the second stretch-inhibiting member 120 with a larger area is less likely to be bent or stretched during the stretching process, and the second stretch-inhibiting member 120 has better stretch-inhibiting ability, and the deformation of the second stretch-inhibiting member 120 is smaller, thereby making the deformation of the first stretch-inhibiting member 110 smaller to protect the functional pattern layer at the first stretch-inhibiting member 110. Secondly, the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 sandwich part of the stretchable layer 130 therebetween, thereby inhibiting the stretchability of the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120, so that the first stretch-inhibiting member 110, the second stretch-inhibiting member 120, and the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 together form a stretch-inhibiting region to protect the corresponding functional pattern layer.

[0098] For example, the second stretch-inhibiting member 120 can have an area greater than or equal to the area of the corresponding second stretch-inhibiting member 120. During the stretching process, the external force first acts on the second stretch-inhibiting member 120 with a larger area, and the stress generated by the external force is dispersed to all parts of the second stretch-inhibiting member 120 along the XY plane, thereby relieving the stress on the first stretch-inhibiting member 110 and protecting the functional pattern layer at the first stretch-inhibiting member 110. In addition, the second stretch-inhibiting member 120 with a larger area is less likely to be bent or stretched during the stretching process, and the second stretch-inhibiting member 120 has better stretch-inhibiting ability, and the deformation of the second stretch-inhibiting member 120 is smaller, thereby making the deformation of the first stretch-inhibiting member 110 smaller to protect the functional pattern layer at the first stretch-inhibiting member 110. Secondly, the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 sandwich part of the stretchable layer 130 therebetween, thereby inhibiting the stretchability of the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120, so that the first stretch-inhibiting member 110, the second stretch-inhibiting member 120, and the stretchable layer 130 between the first stretch-inhibiting member 110 and the second stretch-inhibiting member 120 together form a stretch-inhibiting region to protect the corresponding functional pattern layer.

[0099] Some embodiments, see Figure 4The stretchable layer 130 can have a plurality of through holes 134, each of which can penetrate the stretchable layer 130 along the thickness direction of the stretchable substrate 101, and the second stretch-resisting member 120 is located in the through hole 134 one by one, and the second stretch-resisting member 120 can be connected with the corresponding first stretch-resisting member 110. In this way, along the thickness direction of the stretchable substrate 101, the extension length of the second stretch-resisting member 120 is longer, and in the stretching process, the external force first acts on the second stretch-resisting member 120 located in the stretchable layer 130, and the second stretch-resisting member 120 can disperse the external force along the thickness direction of the stretchable substrate 101, and disperse the external force received by the stretchable substrate 101 to the three-dimensional space, so as to relieve the stress of the stretchable substrate 101 in the XY plane, thereby relieving the stress of the first stretch-resisting member 110 in the XY plane, thereby protecting the functional pattern layer at the first stretch-resisting member 110. In addition, since the second stretch-resisting member 120 penetrates the stretchable layer 130 along the thickness direction of the stretchable substrate 101, a barrier is formed in the stretchable layer 130, which can hinder the transmission of external force from one side of the barrier to the other side of the barrier. For example, the second stretch-resisting member 120 can be arranged at the edge of the first stretch-resisting member 110, so as to hinder the force outside the first stretch-resisting member 110 from transmitting to the center of the first stretch-resisting member 110, thereby relieving the stress on the first stretch-resisting member 110 to protect the functional pattern layer at the first stretch-resisting member 110.

[0100] For example, the cross-sectional shape of the through hole 134 can be circular, oval, polygonal, cross-shaped, etc., and the embodiments of the present application do not limit the cross-sectional shape of the through hole 134.

[0101] In the embodiment in which each second conductive line 152 is located on the first side of the stretchable layer 130 and in the stretchable layer 130 of the non-display area 100b has a through hole 134, 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 first side of the stretchable layer 130 and the orthographic projection of the through hole 134 on the first side of the stretchable layer 130 do not overlap, so that the second conductive line 152 and the through hole 134 are staggered, thereby avoiding the second conductive line 152 entering the through hole 134 and easily breaking.

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

[0103] Exemplarily, the cross-sectional area of the second stretch-resistance member 120 can gradually increase in the direction from the second side to the first side of the stretchable layer 130, so as to reduce the difficulty in manufacturing the second stretch-resistance member 120, and in addition, the second stretch-resistance member 120 has a larger contact area with the first stretch-resistance member 110, and the second stretch-resistance member 120 can form better support to the first stretch-resistance member 110.

[0104] Exemplarily, the orthographic projection of the second stretch-resistance member 120 on the surface of the first side of the stretchable layer 130 can be located within the orthographic projection of the corresponding first stretch-resistance member 110 on the surface of the first side of the stretchable layer 130, so as to more easily realize the connection between the second stretch-resistance member 120 and the first stretch-resistance member 110, and make the second stretch-resistance member 120 form support to the first stretch-resistance member 110. In addition, along the thickness direction of the stretchable substrate 101, the part of the stretchable substrate 101 that does not overlap with the first stretch-resistance member 110 has better stretchability, and the influence of the second stretch-resistance member 120 on the stretchability of this part of the stretchable substrate 101 can be reduced.

[0105] Exemplarily, referring to Figure 5 and Figure 6 , the second stretch-resistance member 120 can 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 can be connected with the first stretch-resistance member 110. The cross-sectional area of the second end 122 can 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 smaller, and the flexibility of the first stretch-resistance member 110 and the first end 121 can be considered, so as to avoid the first stretch-resistance member 110, the first end 121 and the stretchable layer 130 from being peeled off due to a too large difference in deformation under external force. The structure composed of the first stretch-resistance member 110 and the first end 121 is distributed in three-dimensional space, the external force is dispersed in three-dimensional space, the force acting on the first stretch-resistance member 110 is reduced, and thus the stretching is inhibited. In addition, the second end 122 has a larger cross-sectional area, so that the second end 122 can better disperse the external force, and the deformation of the second end 122 is smaller, so as to better alleviate the deformation of the first stretch-resistance member 110 caused by the external force, and thus protect the functional pattern layer at the first stretch-resistance 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-resistance member 110 on the surface of the first side of the stretchable layer 130, so as to more easily realize the connection between the first end 121 and the first stretch-resistance member 110, and make the second stretch-resistance member 120 form support to the first stretch-resistance member 110.

[0107] For example, at least part 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-resisting member 110 on the surface of the first side of the stretchable layer 130, so that at least part of the second end 122 is staggered with the first stretch-resisting member 110 along the third direction Z. During the stretching process, part of the external force acts on the first stretch-resisting member 110 and propagates through the first end 121 in the three-dimensional space, i.e., along the third direction Z to the second end 122 and disperses at the second end 122, and another part of the external force acts around the second end 122 and disperses at the second end 122, so that the stress generated by the external force is more dispersed at the second end 122, and the second end 122 has stronger ability to resist stretching, thereby protecting the functional pattern layer at the first stretch-resisting member 110.

[0108] In some embodiments, referring to Figure 5 In some embodiments, at least part of the second stretch-resisting members 120 can be distributed in the non-display area 100b. In the non-display area 100b, the second stretch-resisting members 120 can be arranged on at least one side of the stretchable layer 130 along the first direction X, and / or the second stretch-resisting members 120 can be arranged on at least one side of the stretchable layer 130 along the second direction Y. Embodiments of the present application take the second stretch-resisting members 120 arranged in the first wiring part 131 and the two second wiring parts 132 of the stretchable layer 130 as an example for illustration. In some examples, in the first wiring part 131 and the two second wiring parts 132, the second stretch-resisting members 120 can be multiple, at least part of the multiple second stretch-resisting members 120 are arranged at intervals along the extension direction of the first wiring part 131, and at least part of the multiple second stretch-resisting members 120 extend along the direction from the second wiring part 132 to the first wiring part 131, and the second stretch-resisting members 120 located at both ends of the extension direction of the first wiring part 131 are connected with the second stretch-resisting members 120 located in the second wiring part 132. The principle is similar to that of the first stretch-resisting member 110, which will not be repeated. In other examples, the second stretch-resisting members 120 located in the first wiring part 131 and the two second wiring parts 132 can be an integral structure. The principle is similar to that of the first stretch-resisting member 110, which will not be repeated.

[0109] In some embodiments, referring to Figure 4In the embodiment in which the second stretch-inhibiting member 120 is located in the through hole 134, the plurality of sub stretch-inhibiting members 120a can better disperse the tensile stress in the Z direction, avoiding the functional failure caused by the tensile fracture of the first stretch-inhibiting member 110. In addition, the area of the single sub stretch-inhibiting member 120a is small, which can better balance the flexibility of the second stretch-inhibiting member 120, avoiding the large deformation gap between the second stretch-inhibiting member 120 and the stretchable layer 130 in the stretching process, and peeling off. Referring to Figure 5 In the embodiment in which the cross-sectional area of the first end 121 of the second stretch-inhibiting 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-inhibiting member 120a is smaller than the cross-sectional area of the second end 122. When a part of the external force acts on the first stretch-inhibiting member 110, it is sequentially transmitted to the first end 121 and the second end 122 along the third direction Z, and dispersed to various places of the second end 122 along the XY plane, increasing the dispersion path of the part of the external force in the three-dimensional space, reducing the force acting on the first stretch-inhibiting member 110, and thus inhibiting the stretching.

[0110] It can be understood that the same second stretch-inhibiting member 120 can be a one-piece structure, so that the second stretch-inhibiting member 120 has stronger ability to inhibit stretching and better protects the functional pattern layer at the first stretch-inhibiting member 110. In the embodiment in which the second stretch-inhibiting member 120 includes the first end 121 and the second end 122, the first end 121 of the second stretch-inhibiting member 120 can have at least one hollow portion, and the hollow portion can be filled with the stretchable layer 130. Referring to Figure 6 For example, the hollow portion can be located in the first end 121, so that the flexibility of the first end 121 can be considered, and the tensile stress in the Z direction can be better dispersed, and the principle is similar to that the second stretch-inhibiting member 120 includes a plurality of sub stretch-inhibiting members 120a, which will not be repeated. The second end 122 is not provided with a hollow portion, so that the area of the second end 122 is large, further increasing the dispersion path of the external force in space, reducing the force acting on the first stretch-inhibiting member 110, and thus inhibiting the stretching.

[0111] In some embodiments, referring to Figure 4 The second side of the stretchable layer 130 can be provided with an auxiliary stretchable layer 140, so that the auxiliary stretchable layer 140 plays a protective role for the stretchable substrate 101, and also ensures the stretchability of the stretchable substrate 101. For example, the elastic modulus of the auxiliary stretchable layer 140 is smaller than the elastic modulus of the first stretch-inhibiting member 110 and / or the second stretch-inhibiting member 120. The material of the auxiliary stretchable layer 140 can be the same as or different from the material of the stretchable layer 130.

[0112] Figure 3 The fabrication process of the stretchable substrate 101 can be as follows: First, on the carrier plate 200 ( Figure 6 For example, an auxiliary stretchable layer 140 is formed on a glass plate (the support plate 200 can be removed after the stretchable display panel 100 is prepared), and then a second stretch-reducing member 120 is prepared on the auxiliary stretchable layer 140. Then a stretchable layer 130 is formed on the side of the second stretch-reducing member 120 away from the auxiliary stretchable layer 140, and then a first stretch-reducing member 110 is formed on the side of the stretchable layer 130 away from the auxiliary stretchable layer 140. In embodiments without the auxiliary stretchable layer 140, the second stretching member 120 and the stretchable layer 130 are in direct contact with the support plate 200. Since the adhesion forces between the second stretching member 120, the stretchable layer 130, and the support plate 200 can differ, the ease of peeling between them also varies. When separating the stretchable substrate 101 from the support plate 200, the degree of separation between the second stretching member 120 and the support plate 200, and between the stretchable layer 130 and the support plate 200, can differ, potentially leading to tearing and peeling between the second stretching member 120 and the stretchable layer 130. Therefore, by providing the auxiliary stretchable layer 140, the aforementioned peeling phenomenon can be avoided, thereby ensuring the structural stability of the stretchable substrate 101 during the separation process between the support plate 200 and the stretchable substrate 101. For example, when the second stretching member 120 and the carrier plate 200 are inorganic materials, and the stretchable layer 130 and the auxiliary stretchable layer 140 are organic materials, the separation between the second stretching member 120 and the carrier plate 200 is more difficult than the separation between the auxiliary stretchable layer 140 and the carrier plate 200. By providing the auxiliary stretchable layer 140, the difficulty of separating the stretchable substrate 101 and the carrier plate 200 can be reduced.

[0113] For example, the auxiliary stretchable layer 140 and / or the stretchable layer 130 can be formed by coating and curing. The thickness of the auxiliary stretchable layer 140 and / or the stretchable layer 130 can be 8 μm. The first stretchable component 110 and / or the second stretchable component 120 can be formed using deposition, photolithography, or other processes. The deposition process can include atomic layer deposition (ALD), physical vapor deposition (PVD), or chemical vapor deposition (CVD).

[0114] It should be noted that the numerical values ​​and ranges involved in the embodiments of this 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, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions 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 includes a display area and a non-display area, wherein the non-display area is located at least part of the outer periphery of the display area, and the display area includes a plurality of island structures and bridge structures, wherein two adjacent island structures are connected by the bridge structures; The stretchable display panel includes a stretchable layer, a plurality of first anti-stretch members and a plurality of second anti-stretch members. Along the thickness direction of the stretchable display panel, the stretchable layer includes a first side and a second side disposed opposite to each other. The island structure, the bridge structure, and the first tension-suppressing member are all located on the first side of the stretchable layer, and each of the second tension-suppressing members is located in the stretchable layer. The orthographic projection of the first tension-suppressing member on the first side of the stretchable layer and the orthographic projection of the second tension-suppressing member on the first side of the stretchable layer at least partially overlap, and at least a portion of the first tension-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, and the opening of each groove is located on the surface of the second side of the stretchable layer, and the second anti-stretching member is located in the groove in a corresponding manner.

3. The stretchable display panel according to claim 2, characterized in that, The orthographic projection of the second tension-reducing member on the first side of the stretchable layer overlaps the orthographic projection of the corresponding first tension-reducing member on the first side of the stretchable layer.

4. The stretchable display panel according to claim 2, characterized in that, The surface of the second stretching member facing away from the bottom wall of the groove is flush with the second side surface of the stretchable layer.

5. The stretchable display panel according to claim 1, characterized in that, 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 anti-stretch member is located in each of the through holes, and the second anti-stretch member is connected to the corresponding first anti-stretch member.

6. The stretchable display panel according to claim 5, 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 tensioning member is equal or gradually increases everywhere.

7. The stretchable display panel according to claim 6, characterized in that, The orthographic projection of the second tension member on the first side of the stretchable layer lies within the orthographic projection of the corresponding first tension member on the first side of the stretchable layer.

8. The stretchable display panel according to claim 5, characterized in that, The second tension-suppressing member includes a first end near the first side of the stretchable layer and a second end near 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.

9. The stretchable display panel according to claim 8, characterized in that, The orthographic projection of the first end on the first side of the stretchable layer lies within the orthographic projection of the corresponding first tension member on the first side of the stretchable layer.

10. The stretchable display panel according to claim 8, characterized in that, At least a portion of the orthographic projection of the second end onto the surface of the first side of the stretchable layer lies outside the orthographic projection of the corresponding first tension member onto the surface of the first side of the stretchable layer.

11. The stretchable display panel according to any one of claims 1-10, characterized in that, The stretchable layer located in the non-display area includes a first trace portion and two second trace portions, the second trace portions being located at opposite ends in the extension direction of the first trace portion; The stretchable display panel located in the non-display area includes multiple conductive lines, each of which is located on the first side of the stretchable layer. At least a portion of the multiple conductive lines are spaced apart along the extension direction of the first wiring portion, and all of them extend along the direction from the second wiring portion to the first wiring portion.

12. The stretchable display panel according to claim 11, characterized in that, The first tensioning member is also located on the first side of the first wiring portion and / or the second wiring portion.

13. The stretchable display panel according to claim 11, characterized in that, In the non-display area, there are multiple first stretching members, and the conductive lines are connected to the first stretching members one by one. The orthographic projection of the conductive lines on the first side of the stretchable layer is located within the orthographic projection of the first stretching members on the first side of the stretchable layer.

14. The stretchable display panel according to claim 11, characterized in that, In the non-display area, there are multiple first stretching members, and there is a gap between each pair of adjacent first stretching members. The conductive lines are located in the gaps one by one.

15. The stretchable display panel according to claim 11, characterized in that, The first tensioning member located on the first wiring section and the two second wiring sections is an integral structure, and / or the second tensioning member located on the first wiring section and the two second wiring sections is an integral structure.

16. The stretchable display panel according to claim 11, characterized in that, The stretchable layer has a plurality of through holes, at least some of which 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.

17. The stretchable display panel according to any one of claims 1-10, characterized in that, The same second stretching member includes a plurality of sub-stretching members, which are arranged at intervals along the second side of the stretchable layer.

18. The stretchable display panel according to claim 17, characterized in that, An auxiliary stretchable layer is provided on the second side of the stretchable layer.

19. The stretchable display panel according to claim 17, characterized in that, The elastic modulus of the first tension-reducing member and / or the second tension-reducing member is greater than the elastic modulus of the stretchable layer.

20. The stretchable display panel according to any one of claims 1-10, characterized in that, The first tension-suppressing member is also located between the stretchable layer and the bridge structure.

21. A stretchable display device, characterized in that, Includes the stretchable display panel described in any one of claims 1-20 above.

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