A stretchable display panel and a stretchable display device

Abstract

The present application provides a stretchable display panel and a stretchable display device, including: two adjacent pixel islands are connected to each other through a circuit layer on one side of the pixel island; at least two first support layers are arranged on the side of the circuit layer away from the pixel island; an elastic layer is arranged on the side of the first support layer away from the pixel island to connect two adjacent first support layers; the elastic modulus of the first support layer is greater than that of the elastic layer, so that the first support layer can play a role in supporting the pixel island and prevent the pixel island from deforming; the orthographic projection of the first hole region on the plane of the pixel island and the orthographic projection of the second hole region on the plane of the pixel island at least partially overlap, so as to leave a certain space for the deformation of the circuit layer; a stress structure is arranged on one side or both sides of the circuit layer, and the stress structure is used to cause the circuit layer to deform in a preset direction, so that the deformation of the circuit layer has directivity by using the stress structure, meeting the user's usage requirements and improving the user's usage experience.

Description

Technical Field

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

[0002] With the continuous development of display technology, R & D personnel have developed various display panels. Among them, the stretchable display panel has the characteristic that it can be stretched in the original planar shape on the premise of ensuring image quality. "Stretchable" refers to the ability of materials, structures, devices or device components to be strained without breaking. Therefore, the stretchable display panel has been gradually applied to fields such as wearable devices, Internet of Things devices, and artificial intelligence, bringing users a brand-new viewing and using experience.

[0003] However, the current stretchable display panel cannot be deformed in a preset direction perpendicular to the display panel. That is, how to ensure the bending directivity of the bridging structure with deformation margin of the stretchable display panel in the direction perpendicular to the display panel is a technical problem to be solved in this field. Summary of the Invention

[0004] In view of this, this summary of the invention is provided to introduce concepts in a brief form, and these concepts will be described in detail in the following detailed implementation section. This summary of the invention is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The purpose of the present application is to provide a stretchable display panel and a stretchable display device, which can achieve deformation in a unified direction perpendicular to the display panel and ensure the bending directivity of the bridging structure with deformation margin of the stretchable display panel in the direction perpendicular to the display panel.

[0006] To achieve the above purpose, the present application has the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a stretchable display panel, including:

[0008] At least two pixel islands, with a first cavity area between two adjacent pixel islands, and two adjacent pixel islands are connected to each other through a circuit layer on one side of the pixel island;

[0009] At least two first support layers are provided on the side of the circuit layer away from the pixel island, with a second cavity area between two adjacent first support layers, and two adjacent first support layers are connected to each other through an elastic layer provided on the side of the first support layer away from the pixel island; the elastic modulus of the first support layer is greater than the elastic modulus of the elastic layer, and the elastic modulus of the first support layer is greater than the elastic modulus of the circuit layer;

[0010] The positive projection of the first hole region on the pixel island plane is a first projection, and the positive projection of the second hole region on the pixel island plane is a second projection. At least part of the first projection and the second projection overlap;

[0011] Taking the direction perpendicular to the pixel island plane as the first direction, stress structures are provided on any one side or both sides of the circuit layer along the first direction, and the stress structures are used to cause the circuit layer to deform in a preset direction.

[0012] An embodiment of the present application provides a stretchable display panel and a stretchable display device. The display panel includes: at least two pixel islands, a first hole region is provided between two adjacent pixel islands, two adjacent pixel islands are connected to each other through a circuit layer on one side of the pixel island, at least two first support layers are provided on the side of the circuit layer away from the pixel island, a second hole region is provided between two adjacent first support layers, and two adjacent first support layers are connected to each other through an elastic layer provided on the side of the first support layer away from the pixel island. The elastic modulus of the first support layer is greater than that of the elastic layer, and the elastic modulus of the first support layer is greater than that of the circuit layer. Thus, the first support layer can play a role in supporting the pixel island to prevent the pixel island from deforming. The positive projection of the first hole region on the pixel island plane is a first projection, and the positive projection of the second hole region on the pixel island plane is a second projection. At least part of the first projection and the second projection overlap, so as to leave a certain space for the deformation of the circuit layer. Taking the direction perpendicular to the pixel island plane as the first direction, stress structures are provided on any one side or both sides of the circuit layer along the first direction, and the stress structures are used to cause the circuit layer to deform in a preset direction. Thus, the stress structures are used to make the deformation of the circuit layer have directivity, meeting the user's usage requirements and improving the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Combined with the drawings and referring to the following specific embodiments, the above and other features, advantages and aspects of the embodiments of the present disclosure will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the original components and elements are not necessarily drawn to scale.

[0015] Figure 1 FIG. shows a schematic cross-sectional view of a display panel provided by an embodiment of the present application;

[0016] Figure 2 Shows a top view of a display panel provided by an embodiment of the present application;

[0017] Figure 3 Shows a top view of another display panel provided by an embodiment of the present application;

[0018] Figure 4 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0019] Figure 5 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0020] Figure 6 Shows a top view of yet another display panel provided by an embodiment of the present application;

[0021] Figure 7 Shows a cross-sectional schematic view of yet another display panel provided by an embodiment of the present application;

[0022] Figure 8 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0023] Figure 9 Shows a top view of another display panel provided by an embodiment of the present application;

[0024] Figure 10 Shows a cross-sectional schematic view of yet another display panel provided by an embodiment of the present application;

[0025] Figure 11 Shows a top view of yet another display panel provided by an embodiment of the present application;

[0026] Figure 12 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0027] Figure 13 Shows a top view of another display panel provided by an embodiment of the present application;

[0028] Figure 14 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0029] Figure 15 Shows a cross-sectional schematic view of another display panel provided by an embodiment of the present application;

[0030] Figure 16 Shows a top view of yet another display panel provided by an embodiment of the present application;

[0031] Figure 17Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0032] Figure 18 Shows a cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present application;

[0033] Figure 19 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0034] Figure 20 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0035] Figure 21 Shows a cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present application;

[0036] Figure 22 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0037] Figure 23 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0038] Figure 24 Shows a cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present application;

[0039] Figure 25 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0040] Figure 26 Shows a cross-sectional schematic diagram of another display panel provided by an embodiment of the present application;

[0041] Figure 27 Shows a top view of another display panel provided by an embodiment of the present application;

[0042] Figure 28 Shows a cross-sectional schematic diagram of yet another display panel provided by an embodiment of the present application;

[0043] Figure 29 Shows a top view of another display panel provided by an embodiment of the present application;

[0044] Figure 30 Shows a schematic diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0045] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings.

[0046] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application may be practiced in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0047] Secondly, the present application will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional views showing the structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present application herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0048] In order to better understand the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

[0049] See Figure 1 As shown, it is a schematic cross-sectional view of a stretchable display panel provided by an embodiment of the present application, including:

[0050] At least two pixel islands 1, with a first hole region 2 between two adjacent pixel islands 1. That is, the first hole region 2 can be an interval empty region between two adjacent pixel islands 1, realizing the interval setting of two adjacent pixel islands 1. The two adjacent pixel islands 1 are connected to each other through the circuit layer 3 on one side of the pixel island 1, thereby realizing the signal transmission between the pixel islands 1.

[0051] Specifically, the pixel island provided by the embodiment of the present application may include one or more pixel units. The pixel unit may include light-emitting elements such as an LED (Light Emitting Diode) chip, a Mini LED (Mini Light Emitting Diode) chip, a Micro LED (Micro Light Emitting Diode) chip, an OLED (Organic Light-Emitting Diode) chip, or a QLED (Quantum Dot Light Emitting Diodes) chip.

[0052] The material of the circuit layer 3 may include various flexible and bendable materials, such as polymer resins, such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP), etc.

[0053] In the embodiment of the present application, at least two first support layers 4 are provided on the side of the circuit layer 3 away from the pixel island 1, and there is a second hole region 5 between two adjacent first support layers 4, that is, the second hole region 5 can be an interval empty region between two adjacent pixel islands 1, realizing the spaced arrangement of two adjacent first support layers 4. The elastic layer 6 provided on the side of the first support layer 4 away from the pixel island 1 connects two adjacent first support layers 4. The elastic modulus of the first support layer 4 is greater than that of the elastic layer 6, and the elastic modulus of the first support layer 4 is greater than that of the circuit layer 3. Thus, the first support layer 4 can play a role in supporting the pixel island 1 and prevent the pixel island 1 from deforming.

[0054] Specifically, the larger the elastic modulus of the material, the less likely the material is to deform, and the stronger the rigidity and the greater the hardness. Therefore, the first support layer 4 can have a relatively large elastic modulus, and the circuit layer 3 and the elastic layer 6 can have relatively small elastic moduli, that is, the circuit layer 3 and the elastic layer 6 have a relatively large reversible deformation ability, so as to realize the attachment of the pixel island 1, the circuit layer 3, and the first support layer 4 on one side of the elastic layer 6 in the stretched state of the elastic layer 6, so that the circuit layer 3 can be bent and deformed in the direction perpendicular to the plane of the pixel island 1 after the stretching external force is removed. Thus, the display panel provided by the embodiment of the present application can have a certain stretchable effect.

[0055] The orthographic projection of the first hole region 2 on the plane of the pixel island 1 is the first projection, and the orthographic projection of the second hole region 5 on the plane of the pixel island 1 is the second projection. At least part of the first projection and the second projection overlap, so as to leave a certain space for the deformation of the circuit layer 3 and realize the stretchability of the display panel.

[0056] In order to achieve the deformed bending directivity of the circuit layer 3, the direction perpendicular to the plane of the pixel island 1 can be used as the first direction, and stress structures 7 are arranged on any one side or both sides of the circuit layer 3 along the first direction. The stress structures 7 are used to cause the circuit layer to deform in a preset direction, so that the deformation of the circuit layer 3 has directivity by using the stress structures 7, meeting the user's usage requirements and improving the user's usage experience.

[0057] In a possible implementation, referring to Figure 1 and Figure 2 as shown, Figure 2 is a top view of a display panel provided by an embodiment of the present application. The stress structure 7 provided by the embodiment of the present application may include at least one dispensing 71 arranged on the side of the circuit layer 3 away from the elastic layer 6. The orthographic projection of the dispensing 71 on the plane of the pixel island 1 is the third projection, and the third projection is included within the overlapping part of the first projection and the second projection. The dispensing 71 can be arranged at any position on the circuit layer 3 included within the third projection, so that the flexibility of the arrangement of the dispensing 71 is relatively high, and the width of the circuit layer 3 can be set relatively large, for example, the same as the width of the pixel island 1, so that the strength of the circuit layer 3 is relatively high and it is not easy to break.

[0058] In a possible implementation, referring to Figure 3 as shown, which is a top view of another display panel provided by an embodiment of the present application. The width of the circuit layer 3 can be set to be smaller than the width of the pixel island, so as to save the cost of setting the circuit layer 3, and it can be used for connection between two adjacent pixel islands 1.

[0059] Specifically, the material of the dispensing 71 can be various common adhesives such as acrylate, epoxy resin or polyvinyl acetal. Referring to Figure 4 as shown, the dispensing 71 can generate a shrinkage stress F during curing. Since the shrinkage stress F deviates from the centroid 31 of the circuit layer 3, it can act on the circuit layer 3 to form a bending moment M in the direction away from the elastic layer 6 on the circuit layer 3. Under the action of the bending moment M in the direction away from the elastic layer 6 on the circuit layer 3, the circuit layer 3 can bend towards the elastic layer 6, which is equivalent to applying a force to the circuit layer 3 to make it bend towards the side of the elastic layer 6, so that the circuit layer 3 can bend towards the side close to the elastic layer 6.

[0060] Referring to Figure 5 as shown, that is, the preset direction at this time can be the direction towards the side of the elastic layer 6. That is, by setting the simple and convenient dispensing 71 in the display panel, the bending directivity of the circuit layer 3 can be achieved. The material is simple and easy to obtain, the cost is relatively low, and the modification to the display panel is relatively small. In a possible implementation, referring to Figure 5As shown, an encapsulation layer 11 can be provided on the side of the pixel island 1 away from the circuit layer 3, so that the encapsulation layer 11 can play a protective role for the pixel island 1, avoiding stress on the circuit layer 3 from spreading to the pixel island 1 when the circuit layer 3 is bent under stress and preventing damage to the pixel island 1.

[0061] In a possible implementation, referring to Figure 6 As shown, it is a top view of another display panel provided by an embodiment of the present application. At this time, the dispensing 71 is all provided on the side away from the elastic layer 6. For the dispensing 71 between two adjacent pixel islands 1 parallel to the X direction, the length of the dispensing 71 parallel to the X direction can be set to be greater than the length parallel to the Y direction, so that the dispensing 71 mainly generates a contraction stress parallel to the X direction. After the tensile external force is removed from the display panel, the circuit layer 3 between two adjacent pixel islands 1 can quickly bend toward the side of the elastic layer 6, that is, the material of the dispensing 71 can be saved. When the material of the dispensing 71 is limited, the length of the dispensing 71 in the X direction can be set to be larger and the length in the Y direction can be set to be smaller.

[0062] For the dispensing 71 between two adjacent pixel islands 1 parallel to the Y direction, the length of the dispensing 71 parallel to the Y direction can be set to be greater than the length parallel to the X direction, so that the dispensing 71 mainly generates a contraction stress parallel to the Y direction. After the tensile external force is removed from the display panel, the circuit layer 3 between two adjacent pixel islands 1 can quickly bend toward the side of the elastic layer 6, that is, the material of the dispensing 71 can be saved. When the material of the dispensing 71 is limited, the length of the dispensing 71 in the Y direction can be set to be larger and the length in the X direction can be set to be smaller.

[0063] In a possible implementation, referring to Figure 7 As shown, it is a cross-sectional view of another display panel provided by an embodiment of the present application. When the dispensing 71 is provided on the side of the circuit layer 3 close to the elastic layer 6, the dispensing 71 can generate a contraction stress F during curing. Since this contraction stress F deviates from the centroid 31 of the circuit layer 3, it can act on the circuit layer 3 to form a bending moment M in the direction of the elastic layer 6 on the circuit layer 3.

[0064] Referring to Figure 8 As shown, under the action of the bending moment M of the circuit layer 3 in the direction of the elastic layer 6, the circuit layer 3 can bend toward the side away from the elastic layer 6, which is equivalent to applying a force to the circuit layer 3 to make it away from the side of the elastic layer 6, so that the circuit layer 3 can bend toward the side away from the elastic layer 6, that is, the preset direction at this time can be the direction away from the side of the elastic layer 6.

[0065] In a possible implementation, referring to Figure 9As shown in the figure, it is a top view of another display panel provided by an embodiment of the present application. At this time, the dispensing 71 is disposed on one side close to the elastic layer 6. For the dispensing 71 between two adjacent pixel islands 1 parallel to the X direction, the length of the dispensing 71 parallel to the X direction can be set to be greater than the length parallel to the Y direction, so that the dispensing 71 mainly generates a contraction stress parallel to the X direction. After the tensile external force is removed from the display panel, the circuit layer 3 between two adjacent pixel islands 1 can quickly generate a bend away from the elastic layer 6 side, that is, the material of the dispensing 71 can be saved. When the material of the dispensing 71 is limited, the length of the dispensing 71 in the X direction can be set to be larger and the length in the Y direction can be set to be smaller.

[0066] For the dispensing 71 between two adjacent pixel islands 1 parallel to the Y direction, the length of the dispensing 71 parallel to the Y direction can be set to be greater than the length parallel to the X direction, so that the dispensing 71 mainly generates a contraction stress parallel to the Y direction. After the tensile external force is removed from the display panel, the circuit layer 3 between two adjacent pixel islands 1 can quickly generate a bend away from the elastic layer 6 side, that is, the material of the dispensing 71 can be saved. When the material of the dispensing 71 is limited, the length of the dispensing 71 in the Y direction can be set to be larger and the length in the X direction can be set to be smaller.

[0067] Optionally, as shown in Figure 10 the figure, it is a schematic cross-sectional view of another stretchable display panel provided by an embodiment of the present application. The dispensing 71 can include multiple ones, and there is a gap between any two adjacent dispensings 71. By arranging multiple dispensings, when the dispensing 71 cures and shrinks, a greater contraction stress can be generated, so as to apply a greater stress towards the elastic layer 6 to the circuit layer 3, making it easier to realize the bending of the circuit layer 3, facilitating the user's use, and enhancing the user's experience.

[0068] Optionally, as shown in Figure 10 the figure, multiple dispensings 71 can be symmetrically distributed along the midline between two adjacent pixel islands 1. Thus, when multiple dispensings 71 cure and shrink, the stress generated on the circuit layer 3 is a more uniform stress. On the one hand, it can avoid damage to the circuit layer 3 caused by uneven stress, and on the other hand, it can make the bending direction of the circuit layer 3 more unified.

[0069] As shown in Figure 11 the figure, it is a top view of the display panel provided by an embodiment of the present application Figure 10 Multiple dispensings 71 are symmetrically distributed along the midline between two pixel islands, and multiple dispensings 71 are spaced apart.

[0070] Optionally, as shown in Figure 12As shown, it is a schematic cross-sectional view of another stretchable display panel provided by an embodiment of the present application. There may be multiple dispensing dots 71, and the multiple dispensing dots 71 may be in contact with each other. While generating greater contraction stress, since the multiple dispensing dots 71 are in contact with each other, in addition to applying a greater stress on the circuit layer 3 towards the elastic layer 6, the contraction stress generated between the dispensing dots can play a role in mutual compensation, avoiding damage to the circuit layer 3 that may be caused by excessive stress. Refer to Figure 13 As shown, it is a top view of the display panel provided by an embodiment of the present application. The multiple dispensing dots 71 are in contact with each other. Figure 12 As shown, it is a top view of the display panel provided by an embodiment of the present application. The multiple dispensing dots 71 are in contact with each other.

[0071] In another possible implementation, refer to Figure 14 As shown, the stress structure 7 provided by an embodiment of the present application may include at least one second support layer 72 disposed on either one or both sides of the circuit layer 3. The second support layer 72 is connected to both adjacent first support layers 4. There is at least one groove 73 on the second support layer 72, and the opening direction of the groove 73 is set according to the preset deformation direction of the circuit layer 3.

[0072] Thus, in an embodiment of the present application, refer to Figure 14 As shown, when the preset direction is the direction away from the elastic layer 6, the second support layer 72 can be disposed on the side of the circuit layer 3 close to the elastic layer 6, and the thickness of the second support layer 72 is less than the thickness of the first support layer 4, so as to provide a certain space for the circuit layer 3 to bend and deform. The groove 73 can be set not to contact the first support layer 4. At this time, the opening direction of the groove 73 is opposite to the bending direction of the circuit layer 3, and the opening direction of the groove 73 can be set to face the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward contracting force F, since the groove 73 is provided on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72, forming a bending moment on the second support layer 72 away from the circuit layer 3 side, so that the second support layer 72 and the circuit layer 3 can bend towards the side away from the elastic layer 6, thus realizing the bending directivity of the circuit layer 3 and realizing the deformation of the circuit layer 3 in the direction away from the elastic layer 6.

[0073] Refer to Figure 15 As shown, that is, the preset direction at this time can be the direction away from the elastic layer 6 side. In one possible implementation, refer to Figure 15 As shown, an encapsulation layer 11 can be disposed on the side of the pixel island 1 away from the circuit layer 3. Thus, the encapsulation layer 11 can play a role in protecting the pixel island 1, avoiding the stress applied on the circuit layer 3 from spreading to the pixel island 1 when the circuit layer 3 is bent under stress and avoiding damage to the pixel island 1.

[0074] Refer to Figure 16 As shown, it is an embodiment of the present application Figure 14Top view of the shown display panel. The groove 73 can be a spherical groove 73. Refer to Figure 1 two spherical grooves 73 distributed along the X direction in ​ or two cylindrical grooves 73 distributed along the Y direction in

[0075] Optionally, refer to ​ shown in the figure. The second support layer 72 can be arranged on the side of the circuit layer 3 away from the elastic layer 6. The groove 73 can be arranged not to contact the pixel island 1. At this time, the opening direction of the groove 73 is opposite to the bending direction of the circuit layer 3. The opening direction of the groove 73 can be set to face the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward shrinking force F, since the groove 73 is arranged on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72 and forms a bending moment M towards the circuit layer 3 on the second support layer 72, so that the second support layer 72 and the circuit layer 3 can be bent towards the side away from the elastic layer 6, thus realizing the bending directivity of the circuit layer 3 and realizing the deformation of the circuit layer 3 in the direction away from the elastic layer 6.

[0076] In a possible implementation manner, refer to ​ shown in the figure. If you want to realize the bending of the circuit layer 3 towards the elastic layer 6, the groove 73 can be arranged not to contact the first support 4. At this time, the opening direction of the groove 73 is opposite to the bending direction of the circuit layer 3. The opening direction of the groove 73 can be set to be away from the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward shrinking force F, since the groove 73 is arranged on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72 and forms a bending moment M towards the circuit layer 3 on the second support layer 72, so that the second support layer 72 and the circuit layer 3 can be bent towards the elastic layer 6, refer to ​ shown in the figure, thus realizing the bending directivity of the circuit layer 3 and realizing the deformation of the circuit layer 3 in the direction towards the elastic layer 6.

[0077] In a possible implementation manner, refer to ​ or ​ shown in the figure. The groove 73 can be arranged to contact any one of the first support layers 4. At this time, the bending direction of the circuit layer 3 is consistent with the opening direction of the groove.

[0078] Specifically, refer to ​As shown, when the second support layer 72 is disposed on the side of the circuit layer 3 close to the elastic layer 6, if it is desired to bend the circuit layer 3 toward the elastic layer 6, the opening direction of the groove 73 can be set to face the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward contracting force F, since the groove 73 is provided on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72 and forms a bending moment M on the second support layer 72 toward the circuit layer 3 side, so that the second support layer 72 and the circuit layer 3 can be bent toward the elastic layer 6 side.

[0079] Specifically, refer to ​ As shown, when the second support layer 72 is disposed on the side of the circuit layer 3 away from the elastic layer 6, if it is desired to bend the circuit layer 3 toward the elastic layer 6, the opening direction of the groove 73 can be set to face the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward contracting force F, since the groove 73 is provided on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72 and forms a bending moment M on the second support layer 72 away from the circuit layer 3 side, so that the second support layer 72 and the circuit layer 3 can be bent toward the elastic layer 6 side.

[0080] Refer to ​ As shown, two grooves 73 can also be provided on the second support layer 72, and both of these grooves 73 are in contact with the first support layer 4. When the second support layer 72 is disposed on the side of the circuit layer 3 close to the elastic layer 6, if it is desired to bend the circuit layer 3 toward the elastic layer 6, the opening direction of the groove 73 can be set to face the elastic layer 6. When the external force is removed and the elastic layer 6 contracts to form an inward contracting force F, since the groove 73 is provided on the second support layer 72, when the force F is transmitted to the second support layer 72, it acts on the second support layer 72 and forms a bending moment M on the second support layer 72 toward the circuit layer 3 side, so that the second support layer 72 and the circuit layer 3 can be bent toward the elastic layer 6 side. Refer to ​ As shown, the bending directivity of the circuit layer 3 can thus be realized, and the deformation of the circuit layer 3 in the direction toward the elastic layer 6 can be realized. By providing two grooves 73 both in contact with the first support layer 4, it is easier to realize the bending directivity of the circuit layer 3.

[0081] In a possible implementation manner, refer to ​ As shown, it is a schematic cross-sectional view of another stretchable display panel provided by the embodiment of the present application. The groove 73 can include a plurality of grooves. When the display panel is subjected to a horizontal compressive stress, by providing a plurality of grooves 73, the greater the force applied to the circuit layer 3 in the preset direction, and thus it is easier to bend the circuit layer 3.

[0082] Specifically, when the groove 73 includes both the groove 73 in contact with the pixel island 1 or the first support layer 4 and the groove 73 not in contact with the pixel island 1 or the first support layer 4, the bending direction of the circuit layer 3 is consistent with the opening direction of the groove 73 in contact with the pixel island 1 or the first support layer 4. See ​ and ​ shown.

[0083] See ​ shown, which is a top view of another stretchable display panel provided by an embodiment of the present application. A plurality of grooves 73 can be set at any position on the circuit layer 3 included in the third projection, so that the flexibility of setting the grooves 73 is relatively strong.

[0084] Optionally, see ​ shown. A plurality of grooves 73 can be symmetrically distributed along the midline between two adjacent pixel islands 1. Thus, when a horizontal compressive stress is applied to the display panel, the stress applied to the circuit layer 3 is a more uniform stress. On the one hand, it can avoid the damage of the circuit layer 3 that may be caused by uneven stress. On the other hand, it can make the bending direction of the circuit layer 3 more unified.

[0085] Optionally, see ​ shown. A part of the grooves 73 can be set in contact with the pixel island 1. In this way, when the elastic layer 6 shrinks and the second support layer 73 is subjected to a horizontal compressive stress, the circuit layer 3 can be bent more easily. Since the horizontal compressive stress may be weakened due to the interaction between the structures of the display panel during the transmission process, therefore, see ​ shown. If a groove 73 is provided in the middle of the second support layer 72, the size of the groove in the middle of the second support layer 72 can be set to be larger. The sizes of the plurality of grooves 73 can gradually decrease from the midline between two adjacent pixel islands 1 to both sides. Thus, when a horizontal compressive stress is applied to the display panel, it is easier to make the second support layer 73 generate a bending deformation toward the elastic layer 6.

[0086] In a possible implementation manner, see ​ shown, which is a schematic cross-sectional view of another display panel provided by an embodiment of the present application. That is, on the same display panel, the circuit layer 3 can be deformed and bent in different preset directions.

[0087] Specifically, the display panel can be divided into area A and area B. For the display panel disposed in area A, the dispensing 71 can be arranged on the side of the circuit layer 3 close to the elastic layer 6. When the dispensing 71 cures and shrinks, the circuit layer 3 in area A can be bent and deformed toward the side away from the elastic layer 6. For the display panel disposed in area B, the second support layer 72 can be arranged on the side of the circuit layer 3 close to the elastic layer 6, and the opening of the groove 73 can be arranged toward the side of the elastic layer 6, and the groove 73 is in contact with the first support layer 4. When the display panel is subjected to a horizontal compressive stress, the circuit layer 3 in area B can be bent and deformed toward the side of the elastic layer 6. Thus, the circuit layer 3 in different areas of the same display panel can be bent and deformed in different preset directions.

[0088] In a possible implementation manner, to provide a larger space for the circuit layer 3 to be bent and deformed, as shown in ​ a top view of another display panel provided by an embodiment of the present application. At least one hollow area 61 can be arranged on the elastic layer 6. The orthographic projection of the hollow area 61 on the plane of the pixel island 1 is the fourth projection, and the fourth projection is included within the overlapping part of the first projection and the second projection. That is, when the circuit layer 3 is bent and deformed toward the side of the elastic layer 6, there is enough space for the circuit layer 3 to bend, improving the bending degree. Optionally, the hollow area 61 can penetrate the elastic layer along the thickness direction of the elastic layer to achieve a larger area for the circuit layer 3 to bend, and the circuit layer 3 can be bent more thoroughly.

[0089] Optionally, in the embodiment of the present application, the orthographic projection area of the first support layer 4 on the plane of the pixel island 1 is the fifth projection area, and the orthographic projection area of the pixel island 1 on the plane of the pixel island 1 is the sixth projection area. The ratio of the fifth projection area to the sixth projection area is [0.8, 1.2], so as to avoid too large a difference between the fifth projection area and the sixth projection area. If the ratio is too large or too small, it is not good. If the ratio is too large, the first support layer 4 is set too large, resulting in insufficient space for the circuit layer 3 to bend. If the ratio is too small, the first support layer 4 is set too small, easily resulting in insufficient rigid support force provided by the first support layer 4 and easily causing damage to the display panel.

[0090] Optionally, the fifth projection area and the sixth projection area can be set to be equal, so as to not only leave enough space for the circuit layer 3 to bend, but also enable the first support layer 4 to provide sufficient rigid support force, avoiding damage to the display panel due to the stress of the stress structure.

[0091] An embodiment of the present application provides a stretchable display panel, which includes: at least two pixel islands, with a first hole region between two adjacent pixel islands, and two adjacent pixel islands are connected to each other through a circuit layer on one side of the pixel island. At least two first support layers are provided on the side of the circuit layer away from the pixel island, and there is a second hole region between two adjacent first support layers. Two adjacent first support layers are connected to each other through an elastic layer provided on the side of the first support layer away from the pixel island. The elastic modulus of the first support layer is greater than that of the elastic layer, and the elastic modulus of the first support layer is greater than that of the circuit layer. Thus, the first support layer can play a role in supporting the pixel island, avoiding deformation of the pixel island. The orthographic projection of the first hole region on the plane of the pixel island is the first projection, and the orthographic projection of the second hole region on the plane of the pixel island is the second projection. At least part of the first projection and the second projection overlap, so as to leave a certain space for the deformation of the circuit layer. The direction perpendicular to the plane of the pixel island is taken as the first direction, and stress structures are provided on any one side or both sides of the circuit layer along the first direction. The stress structures are used to cause the circuit layer to deform in a preset direction, so that the deformation of the circuit layer has directivity by using the stress structures, meeting the user's usage requirements and improving the user's usage experience.

[0092] An embodiment of the present application further provides a display device, including the display panel described in the above embodiment.

[0093] See ​ As shown, it is a schematic plan view of a display device provided by an embodiment of the present application. It can be seen from the figure that the display device 99 includes a display panel 100, and the display panel 100 is the display panel 100 described in any of the above embodiments. The display device 99 provided by an embodiment of the present application can be a mobile phone, a tablet computer, a computer, a television, an in-vehicle display device, an instrument display device, or other display devices with a display function. The embodiments of the present application do not make specific limitations. The display device 99 provided by an embodiment of the present application has the beneficial effects of the display panel 100 provided by an embodiment of the present application. For specific descriptions of the display panel, reference can be made to the above embodiments, and the embodiments of the present application will not be elaborated herein.

[0094] An embodiment of the present application discloses a display device, which includes a display panel: at least two pixel islands, with a first hole region between two adjacent pixel islands, and two adjacent pixel islands are connected to each other through a circuit layer on one side of the pixel island. At least two first support layers are provided on the side of the circuit layer away from the pixel island, and there is a second hole region between two adjacent first support layers. Two adjacent first support layers are connected to each other through an elastic layer provided on the side of the first support layer away from the pixel island. The elastic modulus of the first support layer is greater than that of the elastic layer, and the elastic modulus of the first support layer is greater than that of the circuit layer. Thus, the first support layer can play a role in supporting the pixel island, avoiding deformation of the pixel island. The orthographic projection of the first hole region on the plane of the pixel island is the first projection, and the orthographic projection of the second hole region on the plane of the pixel island is the second projection. At least part of the first projection and the second projection overlap, so as to leave a certain space for the deformation of the circuit layer. The direction perpendicular to the plane of the pixel island is taken as the first direction, and stress structures are provided on any one side or both sides of the circuit layer along the first direction. The stress structures are used to cause the circuit layer to deform in a preset direction, so that the deformation of the circuit layer has directivity by using the stress structures, meeting the user's usage requirements and improving the user's usage experience.

[0095] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. In particular, for the display device embodiment, since it is basically similar to the display panel embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0096] The above is only a preferred embodiment of the present application. Although the present application has been disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the protection of the technical solution of the present application.

Claims

1. A stretchable display panel, characterized in that, Comprising: At least two pixel islands, with a first hole region between two adjacent pixel islands, and two adjacent pixel islands are interconnected through a circuit layer on one side of the pixel islands; At least two first support layers provided on a side of the circuit layer away from the pixel islands, with a second hole region between two adjacent first support layers, and two adjacent first support layers are interconnected through an elastic layer provided on a side of the first support layer away from the pixel islands; the elastic modulus of the first support layer is greater than that of the elastic layer, and the elastic modulus of the first support layer is greater than that of the circuit layer; The positive projection of the first hole region on the plane of the pixel islands is a first projection, the positive projection of the second hole region on the plane of the pixel islands is a second projection, and at least part of the first projection and the second projection overlap; Taking the direction perpendicular to the plane of the pixel islands as the first direction, a stress structure is provided on either one side or both sides of the circuit layer along the first direction, and the stress structure is used to cause the circuit layer to deform in a preset direction; The stress structure includes: at least one dispensing provided on a side of the circuit layer away from the elastic layer, and the positive projection of the dispensing on the plane of the pixel islands is a third projection, and the third projection is included within the overlapping part of the first projection and the second projection; Or, the stress structure includes: at least one second support layer provided on either one side or both sides of the circuit layer, the second support layer is connected to two adjacent first support layers, and there is at least one groove on the second support layer, and the opening direction of the groove is set according to the preset deformation direction of the circuit layer; when the second support layer is provided on a side of the circuit layer close to the elastic layer, the thickness of the second support layer is less than that of the first support layer.

2. The stretchable display panel according to claim 1, wherein The dispensing includes a plurality of; there is a gap between any two adjacent dispensings.

3. The stretchable display panel according to claim 2, wherein The dispensings are symmetrically distributed along the midline between two adjacent pixel islands.

4. The stretchable display panel according to claim 1, wherein The groove includes a plurality of.

5. The stretchable display panel according to claim 4, wherein, The grooves are symmetrically distributed along the midline between two adjacent pixel islands.

6. The stretchable display panel according to claim 4, wherein, The size of the groove gradually decreases from the midline between two adjacent pixel islands to both sides.

7. The stretchable display panel according to claim 1, wherein The elastic layer has at least one hollow region, and the positive projection of the hollow region on the plane of the pixel islands is a fourth projection; The fourth projection is included within the overlapping part of the first projection and the second projection.

8. The stretchable display panel according to claim 7, wherein, The hollow region penetrates the elastic layer along the thickness direction of the elastic layer.

9. The stretchable display panel according to claim 1, wherein The positive projection area of the first support layer on the plane of the pixel islands is a fifth projection area, the positive projection area of the pixel island on the plane of the pixel islands is a sixth projection area, and the ratio of the fifth projection area to the sixth projection area is [0.8, 1.2].[[]END]] 10. The stretchable display panel according to claim 9, wherein The fifth projection area is equal to the sixth projection area.

11. The stretchable display panel according to claim 1, wherein Further comprising: A packaging layer provided on a side of the pixel island away from the circuit layer.

12. A stretchable display device, characterized in that, Comprising a stretchable display panel according to any one of claims 1-11.

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