Display device and preparation process thereof

Abstract

The invention relates to the technical field of display devices, and particularly discloses a display device and a preparation process thereof. The display device comprises a stretchable display film layer, a first elastic film layer, a second elastic film layer and a supporting structure, and the first elastic film layer and the second elastic film layer are arranged on the two sides of the stretchable display film layer respectively; the supporting structure is arranged between the stretchable display film layer and the first elastic film layer and / or between the stretchable display film layer and the second elastic film layer. When the first elastic film layer and the second elastic film layer drive the whole screen body to stretch, friction between the first elastic film layer and the stretchable display film layer and friction between the second elastic film layer and the stretchable display film layer are weakened or avoided, the stretchable display film layer is protected, and meanwhile the stretch rate of the display device is increased.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display device and a manufacturing process thereof. Background Art

[0002] With the continuous development of flexible display technology, the display screen shape has gradually evolved from fixed to fully flexible, and will further develop to the point where the display screen can change accordingly with the shape of the object, which requires the display screen to have multi-directional stretching properties. However, the current structure of stretchable display screens has some problems that affect the stretching rate of the display screen and cause defects after the display screen is stretched. Summary of the invention

[0003] Based on this, it is necessary to provide a display device and a manufacturing process thereof to address the above problems.

[0004] According to a first aspect of an embodiment of the present application, there is provided a display device, including:

[0005] Stretchable display film layer;

[0006] A first elastic film layer and a second elastic film layer are respectively arranged on two sides of the stretchable display film layer;

[0007] The supporting structure is arranged between the stretchable display film layer and the first elastic film layer, and / or between the stretchable display film layer and the second elastic film layer.

[0008] In one of the embodiments, the stretchable display film layer includes a plurality of pixel islands and a plurality of stretch bridges, two adjacent pixel islands are connected by the stretch bridge, and each pixel island includes at least one pixel unit.

[0009] In one embodiment, the support structure is connected between the pixel island and the first elastic film layer, and between the pixel island and the second elastic film layer.

[0010] In one embodiment, each of the pixel islands comprises a first side and a second side opposite to each other, the second side is provided with the pixel unit, the support structure comprises a first support structure and a second support structure, the first support structure is connected between the first side and the first elastic film layer and formed on the first elastic film layer, and the second support structure is connected between the second side and the second elastic film layer and formed on the second side or the second elastic film layer;

[0011] Preferably, the support structure is arranged between two adjacent pixel units of the same pixel island;

[0012] Preferably, the support structure and the pixel unit on the same pixel island are arranged at intervals.

[0013] In one embodiment, the connection between the first supporting structure and the first side is a mortise and tenon connection;

[0014] When the second supporting structure is formed on the second side, the connection method between the second supporting structure and the second elastic membrane layer is a mortise and tenon connection method; when the second supporting structure is formed on the second elastic membrane layer, the connection method between the second supporting structure and the second side is a mortise and tenon connection method.

[0015] In one of the embodiments, along a direction perpendicular to the support structure, the cross-sectional shape of the support structure includes any one or more of a circular shape, an I-shaped shape, a cross shape, and a funnel shape.

[0016] In one embodiment, the ultimate stretching length of the stretchable display film layer is greater than the ultimate stretching lengths of the first elastic film layer and the second elastic film layer.

[0017] In one embodiment, the height of the support structure is greater than 1 micron.

[0018] In one embodiment, the material of the support structure includes organic colloid or metal.

[0019] According to a second aspect of an embodiment of the present application, a process for preparing a display device is provided, comprising:

[0020] Pre-stretching the first elastic film layer and the second elastic film layer to reach a pre-stretched state; connecting the first elastic film layer and the second elastic film layer to both sides of the stretchable display film layer, wherein a supporting structure is connected between the stretchable display film layer and the first elastic film layer and / or between the stretchable display film layer and the second elastic film layer, and the stretchable display film layer is in a naturally contracted state;

[0021] The pre-stretching force applied to the first elastic film layer and the second elastic film layer is released, so that the first elastic film layer and the second elastic film layer are restored to a natural contracted state.

[0022] The display device provided in the present embodiment is provided with a supporting structure between the stretchable display film layer and the first elastic film layer and / or between the stretchable display film layer and the second elastic film layer, so that a distance can be maintained between the first elastic film layer and / or the second elastic film layer and the stretchable display film layer. Therefore, when the first elastic film layer and the second elastic film layer drive the entire screen to stretch, the friction between the first elastic film layer, the second elastic film layer and the stretchable display film layer is weakened or avoided. On the one hand, the stretchable display film layer is protected from being damaged by the friction generated by the stretching. On the other hand, the stretching freedom of the first elastic film layer, the second elastic film layer and the stretchable display film layer is improved, thereby improving the stretching rate of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a display device provided in one embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a display device provided in another embodiment of the present application;

[0025] Figure 3 A schematic diagram of assembling a display device provided in one embodiment of the present application;

[0026] Figure 4 A schematic diagram of assembling a display device provided by another embodiment of the present application;

[0027] Figure 5 Schematic diagrams of cross sections of four types of mortise and tenon structures;

[0028] Figure 6 A flowchart of a manufacturing process of a display device provided in accordance with an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100, stretchable display film layer; 110, pixel island; 120, stretch bridge; 130, pixel unit;

[0031] 200, a first elastic membrane layer;

[0032] 300, a second elastic membrane layer;

[0033] 400, support structure; 410, support column; 420, first support structure; 430, second support structure. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to understand the disclosure of the present application more thoroughly and comprehensively.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] With the continuous development of flexible display technology, the development trajectory of display screen morphology has gradually evolved from rigid to bend to bend to fully flexible, and will further develop into 3D conformal display, that is, the display screen can change accordingly with the shape of the object, which requires the display screen to have multi-directional stretching properties similar to natural rubber. At present, stretchable displays have been gradually applied to wearable electronic products, electronic skin, non-planar or spherical surfaces, and drop-resistant and shock-resistant products, and are one of the important development directions of the next generation of display technology.

[0039] The current structure of a stretchable display generally includes pixel islands and stretch bridges. Two adjacent pixel islands are connected by stretch bridges. The pixel islands are used to carry display functional devices. In addition, an elastic film layer is attached to the surface of the screen to achieve the screen stretching function. However, when the elastic film layer drives the entire screen to stretch, the stretch bridge and the pixel island will generate a lot of friction with the elastic film layer, which will cause the pixel island and the stretch bridge to be easily damaged. At the same time, the friction will also affect the stretching rate of the display.

[0040] In order to solve the above problems, the present application provides a display device and a manufacturing process thereof.

[0041] In one embodiment, a display device is provided, which has good stretching performance and does not cause damage to the internal structure during the stretching process.

[0042] Reference Figure 1 The display device provided in this embodiment includes a stretchable display film layer 100 , a first elastic film layer 200 , a second elastic film layer 300 and a supporting structure 400 .

[0043] The stretchable display film layer 100 includes a plurality of pixel islands 110 and a plurality of stretch bridges 120. The pixel islands 110 are arranged at intervals, and two adjacent pixel islands 110 are connected by the stretch bridge 120. Each pixel island 110 includes at least one pixel unit 130. The first elastic film layer 200 and the second elastic film layer 300 are respectively arranged on both sides of the stretchable display film layer 100. The support structure 400 is arranged between the stretchable display film layer 100 and the first elastic film layer 200 and / or between the stretchable display film layer 100 and the second elastic film layer 300.

[0044] The display device provided in the present embodiment is provided with a supporting structure 400 between the stretchable display film layer 100 and the first elastic film layer 200 and / or between the stretchable display film layer 100 and the second elastic film layer 300, so that a distance can be maintained between the first elastic film layer 200 and / or the second elastic film layer 300 and the stretchable display film layer 100. Therefore, when the first elastic film layer 200 and the second elastic film layer 300 drive the entire screen to stretch, the friction between the first elastic film layer 200, the second elastic film layer 300 and the stretchable display film layer 100 can be weakened or avoided. On the one hand, the stretchable display film layer 100 is protected from being damaged by the friction generated by stretching. On the other hand, the stretching freedom of the first elastic film layer 200, the second elastic film layer 300 and the stretchable display film layer 100 is improved, thereby improving the stretching rate of the display device.

[0045] In this embodiment, the support structure 400 may be disposed only between the stretchable display film layer 100 and the first elastic film layer 200, or only between the stretchable display film layer 100 and the second elastic film layer 300, or simultaneously between the stretchable display film layer 100 and the first elastic film layer 200 and between the stretchable display film layer 100 and the second elastic film layer 300. Figure 2 , when the support structure 400 is only disposed on one side of the stretchable display film layer 100 ( Figure 2 In the present invention, a support structure 400, specifically a second support structure 430, is only provided between the stretchable display film layer 100 and the second elastic film layer 300, and the elastic film layer on the other side of the stretchable display film layer 100 can be connected to the stretchable display film layer 100 by bonding.

[0046] As a preferred embodiment, a support structure 400 is connected between the stretchable display film layer 100 and the first elastic film layer 200, and between the stretchable display film layer 100 and the second elastic film layer 300, that is, both sides of the stretchable display film layer 100 are connected to the corresponding elastic film layer through the support structure 400, and both sides of the stretchable display film layer 100 will not be in direct contact with the corresponding elastic film layer. Therefore, when the screen body is stretched or released, the first elastic film layer 200 and the second elastic film layer 300 extend outward or restore the natural contraction state. Both sides of the stretchable display film layer 100 will not be rubbed by the elastic film layer, thereby avoiding the film layer structure in the pixel island 110 and the stretching bridge 120 from being damaged. At the same time, since the first elastic film layer 200, the second elastic film layer 300 and the stretching bridge 120 are not easily rubbed during the stretching or contraction process, the freedom of movement is higher, which is conducive to improving the stretchability of the display device.

[0047] Specifically, the support structure 400 is connected between the pixel island 110 and the first elastic film layer 200 , and between the pixel island 110 and the second elastic film layer 300 .

[0048] Each of the pixel islands 110 includes a first side and a second side opposite to each other, and the second side is provided with a pixel unit 130. The support structure 400 includes a first support structure 420 and a second support structure 430, wherein the first support structure 420 is connected between the first side and the first elastic membrane layer 200 and is formed on the first elastic membrane layer 200, and the second support structure 430 is connected between the second side and the second elastic membrane layer 300 and is formed on the second side or the second elastic membrane layer 300.

[0049] Each pixel island 110 may include a substrate, a driving layer and a display layer. The driving layer is used to drive the display layer to emit light. The first side of the pixel island 110 is the substrate side, and the second side of the pixel island 110 is the display layer side. Figure 3 and Figure 4 The support structure 400 near the first side (i.e., the first support structure 420) can be made on the corresponding first elastic film layer 200, and the support structure 400 near the second side (i.e., the second support structure 430) can be made on the pixel island 110 or on the corresponding second elastic film layer 300. When the support structure 400 near the second side is made on the pixel island 110, it can be made synchronously with the corresponding structure of the pixel island 110. For example, when the SPC film layer in the driving layer of the pixel island 110 is made, the support structure can be made synchronously.

[0050] When the support structure 400 is formed on the first elastic membrane layer 200 or the second elastic membrane layer 300, the suspended end of the support structure 400 can be connected to the corresponding pixel island 110 during the assembly process. When the support structure 400 is formed on the pixel island 110, the suspended end of the support structure 400 can be connected to the corresponding elastic membrane layer during the assembly process.

[0051] Preferably, a support structure is disposed between two adjacent pixel units 130 of the same pixel island 110 .

[0052] Preferably, the support structure 400 and the pixel unit 130 on the same pixel island 110 are arranged at intervals.

[0053] For example, the pixel island 110 may include three pixel units 130, namely a red light pixel unit, a green light pixel unit and a blue light pixel unit. The area where each pixel unit is located is a light-emitting area, and the supporting structure can be set away from the light-emitting area, that is, the supporting structure 440 on the same pixel island 110 is spaced apart from the pixel unit 130 to avoid affecting the light-emitting performance.

[0054] In one embodiment, the connection method between the first support structure 420 and the first side of the pixel island is a mortise and tenon connection method; when the second support structure 430 is formed on the second side of the pixel island, the connection method between the second support structure 430 and the second elastic membrane layer is a mortise and tenon connection method; when the second support structure 430 is formed on the second elastic membrane layer, the connection method between the second support structure 430 and the second side is a mortise and tenon connection method.

[0055] Through the mortise and tenon connection, the connection stability between the supporting structure and each structure can be improved, the 2D spatial bonding force is increased, and the risk of peeling between the elastic membrane layer and the pixel island 110 during stretching is avoided.

[0056] In one embodiment, the support structure 400 includes a plurality of support columns 410, and the two ends of the support columns can be connected to the rigid island and the corresponding elastic film layer respectively. The positions of the support columns 410 on both sides of the stretchable display film layer 100 can be symmetrically arranged with respect to the plane where the stretchable display film layer 100 is located, that is, the projection positions of the support columns 410 on both sides on the stretchable display film layer 100 are consistent, thereby ensuring the overall stability of the support structure 400.

[0057] In this embodiment, along a direction perpendicular to the support structure, the cross-sectional shape of the support structure includes any one or more of a circular shape, an I-shaped shape, a cross shape, and a funnel shape. Figure 5 The above four cross-sectional shapes are shown in FIG. In practical applications, multiple mortise and tenon structures can be cross-used at the same time. For example, for the same pixel island 110, an I-shaped mortise and tenon structure is used between some support columns 410 and the pixel island 110, and a cross-shaped mortise and tenon structure is used between some support columns 410 and the pixel island 110; or, for different pixel islands 110, the mortise and tenon structure between each pixel island 110 and the support column 410 is different, that is, different pixel islands 110 correspond to different mortise and tenon structures. How to choose the mortise and tenon structure can be determined according to actual needs, and no specific restrictions are made here.

[0058] It should be noted that only the end of the support column 410 can be set to the corresponding mortise and tenon structure shape, or the entire support column 410 can be set to the corresponding mortise and tenon structure shape. For example, the cross-sectional shape of the area of ​​the support column 410 other than the end can be a rectangle, and only the cross-sectional shape of the end is set to an I-shaped mortise and tenon structure; or the cross-sectional shape of the entire support column 410 is an I-shaped mortise and tenon structure.

[0059] In this embodiment, the height of the support structure 400 is greater than 1 micron, preferably 1 micron to 1.6 microns, specifically 1 micron, 1.2 microns, 1.3 microns, 1.6 microns, etc., which can be determined according to actual needs. Generally, the heights of the support pillars 410 are kept consistent.

[0060] In this embodiment, the material of the support structure 400 includes organic colloid or metal.

[0061] In one embodiment, the ultimate stretching length of the stretchable display film layer 100 is greater than the ultimate stretching length of the first elastic film layer 200 and the second elastic film layer 300. When the first elastic film layer 200 and the second elastic film layer 300 reach the stretching limit, the stretching bridge 120 has not reached the stretching limit. That is, in the process of stretching the screen body, the first elastic film layer 200 and the second elastic film layer 300 reach the stretching limit earlier than the stretching bridge 120, and the stretching limit of the first elastic film layer 200 and the second elastic film layer 300 determines the stretching limit of the screen body. Therefore, even when the screen body reaches the stretching limit, the stretching bridge 120 inside it can still be in a contracted state, and the stretching bridge 120 will not break due to the influence of tension.

[0062] In order to achieve the above effect, refer to Figure 3 and Figure 4 When assembling the display device, the first elastic film layer 200 and the second elastic film layer 300 can be stretched in advance, so that the two are in a pre-stretched state, and the stretch bridge 120 in the stretchable display film layer 100 is in a naturally contracted state. Then, the first elastic film layer 200 and the second elastic film layer 300 are connected to the two sides of the stretchable display film layer 100 through the support structure. After the connection is completed, the stretching force on the first elastic film layer 200 and the second elastic film layer 300 is released. At this time, each elastic film layer contracts, and the stretch bridge 120 can shrink synchronously with the elastic film layers on both sides. This ensures that when each elastic film layer is subsequently stretched, the stretch bridge 120 is not easy to reach the limit pulling state, and thus is not easy to break.

[0063] In addition, in order to improve the pixel PPI, before assembly, the overall size of the stretchable display film layer 100 can be increased by increasing the length of the stretching bridge 120. When the elastic film layer and the stretchable display film layer 100 are assembled, the stretching bridge 120 can shrink synchronously with the elastic film layers on both sides, thereby increasing the PPI of the screen.

[0064] In this embodiment, the Young's modulus of the first elastic film layer 200 and the second elastic film layer 300 can be between 2Mpa and 5Mpa, specifically 2Mpa, 3Mpa, or 5Mpa, etc., which can be set according to actual needs. Generally, the Young's modulus of the first elastic film layer 200 and the second elastic film layer 300 can be set to be the same.

[0065] The thickness of the first elastic film layer 200 and the second elastic film layer 300 may be between 100 microns and 200 microns, and may be 100 microns, 130 microns, 150 microns, or 200 microns, etc., which are not specifically limited here. The thickness of the first elastic film layer 200 and the thickness of the second elastic film layer 300 may be the same or different.

[0066] In this embodiment, each pixel island 110 is in the same film layer but is independent of each other. Each pixel island 110 may include at least one pixel unit 130, for example, the same pixel island 110 includes a red light pixel unit, a green light pixel unit and a blue light pixel unit. Each pixel unit 130 has a stacked substrate, a driving layer and a display layer. When preparing the driving layer, a stretch bridge 120 between two adjacent pixel islands can be prepared simultaneously. The stretch bridge 120 includes a signal line electrically connected to the driving layer, which may specifically include one or more of the signal lines such as a gate line, a data line, and a power signal line.

[0067] In one embodiment, a process for preparing a display device is provided. The display device may include the display device provided by the above embodiment.

[0068] Reference Figure 3-Figure 5 The manufacturing process of the display device provided in this embodiment includes the following steps:

[0069] Step S200 , pre-stretching the first elastic membrane layer 200 and the second elastic membrane layer 300 to reach a pre-stretched state.

[0070] Step S400, connecting the first elastic film layer 200 and the second elastic film layer 300 to both sides of the stretchable display film layer 100, wherein a support structure 400 is connected between the stretchable display film layer 100 and the first elastic film layer 200 and / or between the stretchable display film layer 100 and the second elastic film layer 300, and the stretchable display film layer 100 is in a naturally contracted state.

[0071] Step S600 , releasing the pre-stretching force applied to the first elastic membrane layer 200 and the second elastic membrane layer 300 , so that the first elastic membrane layer 200 and the second elastic membrane layer 300 return to a natural contracted state.

[0072] When assembling the display device, the first elastic film layer 200 and the second elastic film layer 300 can be stretched in advance, so that both are in a pre-stretched state, and the stretchable display film layer 100 is in a naturally contracted state, and then the first elastic film layer 200 and the second elastic film layer 300 are respectively connected to the two sides of the stretchable display film layer 100 through the support structure 400. After the connection is completed, the pre-stretching force on the first elastic film layer 200 and the second elastic film layer 300 is released. At this time, each elastic film layer contracts, and the stretchable display film layer 100 can be contracted synchronously with the elastic film layers on both sides. This ensures that when each elastic film layer is subsequently stretched, the stretchable display film layer 100 is not easy to reach the limit pulling state, and thus is not easy to break.

[0073] The stretchable display film layer includes a plurality of pixel islands and a plurality of stretch bridges, and two adjacent pixel islands are connected by stretch bridges. In order to improve the pixel PPI, before assembly, the overall size of the stretchable display film layer 100 can be increased by increasing the length of the stretch bridge 120 in advance. When the elastic film layer and the stretchable display film layer 100 are assembled, the stretch bridge 120 can shrink synchronously with the elastic film layers on both sides, thereby increasing the PPI of the screen.

[0074] The display device obtained by the above-mentioned preparation process is provided with a support structure 400 between the stretchable display film layer 100 and the first elastic film layer 200 and / or between the stretchable display film layer 100 and the second elastic film layer 300, so that a distance can be maintained between the first elastic film layer 200 and / or the second elastic film layer 300 and the stretchable display film layer 100. Therefore, when the first elastic film layer 200 and the second elastic film layer 300 drive the entire screen to stretch, the friction between the first elastic film layer 200, the second elastic film layer 300 and the stretchable display film layer 100 can be weakened or avoided. On the one hand, the stretchable display film layer 100 is protected from being damaged by the friction generated by stretching. On the other hand, the stretching freedom of the first elastic film layer 200, the second elastic film layer 300 and the stretchable display film layer 100 is improved, and the stretching rate of the display device is improved.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display device, characterized in that: include: Stretchable display film layer; A first elastic film layer and a second elastic film layer are respectively arranged on two sides of the stretchable display film layer; The supporting structure is arranged between the stretchable display film layer and the first elastic film layer, and / or between the stretchable display film layer and the second elastic film layer.

2. The display device according to claim 1, characterized in that The stretchable display film layer includes a plurality of pixel islands and a plurality of stretch bridges. Two adjacent pixel islands are connected by the stretch bridges. Each pixel island includes at least one pixel unit.

3. The display device according to claim 2, characterized in that: The supporting structure is connected between the pixel island and the first elastic film layer, and between the pixel island and the second elastic film layer.

4. The display device according to claim 3, characterized in that: Each of the pixel islands comprises a first side and a second side opposite to each other, the second side is provided with the pixel unit, the support structure comprises a first support structure and a second support structure, the first support structure is connected between the first side and the first elastic film layer and formed on the first elastic film layer, the second support structure is connected between the second side and the second elastic film layer and formed on the second side or the second elastic film layer; Preferably, the support structure is arranged between two adjacent pixel units of the same pixel island; Preferably, the support structure and the pixel unit on the same pixel island are arranged at intervals.

5. The display device according to claim 4, characterized in that: The connection between the first supporting structure and the first side is a mortise and tenon connection; When the second supporting structure is formed on the second side, the connection method between the second supporting structure and the second elastic membrane layer is a mortise and tenon connection method; when the second supporting structure is formed on the second elastic membrane layer, the connection method between the second supporting structure and the second side is a mortise and tenon connection method.

6. The display device according to claim 5, characterized in that: Along a direction perpendicular to the support structure, the cross-sectional shape of the support structure includes any one or more of a circular shape, an I-shaped shape, a cross shape, and a funnel shape.

7. The display device according to claim 1, characterized in that The ultimate stretching length of the stretchable display film layer is greater than the ultimate stretching lengths of the first elastic film layer and the second elastic film layer.

8. The display device according to claim 3, characterized in that: The height of the support structure is greater than 1 micron.

9. The display device according to claim 3, characterized in that: The material of the support structure includes organic colloid or metal.

10. A process for preparing a display device according to any one of claims 1 to 9, characterized in that: include: Pre-stretching the first elastic film layer and the second elastic film layer to achieve a pre-stretched state; Connecting the first elastic film layer and the second elastic film layer to two sides of the stretchable display film layer, wherein a supporting structure is connected between the stretchable display film layer and the first elastic film layer and / or between the stretchable display film layer and the second elastic film layer, and the stretchable display film layer is in a naturally contracted state; The pre-stretching force applied to the first elastic film layer and the second elastic film layer is released, so that the first elastic film layer and the second elastic film layer are restored to a natural contracted state.

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