WO2020237518A1

WO2020237518A1 - Display device and preparation method therefor, and electronic apparatus

Info

Publication number: WO2020237518A1
Application number: PCT/CN2019/088936
Authority: WO
Inventors: 王帅
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-12-03
Also published as: CN113348495A

Abstract

Provided is a display device (1). The display device (1) comprises a bending structure (20), and a flexible display module (10) arranged on the bending structure (20). The bending structure (20) is bendable and drives the flexible display module (10) to bend. The flexible display module (10) comprises a bending part (11) and non-bending part (12), and the elasticity modulus of the bending part (11) is less than that of the non-bending part (12). By controlling different parts in the flexible display module (10) such that same have different elastic moduli, the flexible display module (10) not only has an excellent comprehensive performance, but also the degree to which the phenomena of wrinkling and local bending of the flexible display module (10) is generated is reduced. Provided are a preparation method for the display device (1), and an electronic apparatus (2).

Description

Display device and preparation method, electronic equipment

Technical field

This application belongs to the technical field of electronic products, and specifically relates to a display device, a manufacturing method, and electronic equipment.

Background technique

With the continuous development of electronic devices, foldable electronic devices are popular with consumers due to their large-size display screens, rich and diverse operability and playability. However, the display module of the current foldable electronic device has low hardness, which is easy to damage the display module. In addition, since the display module has low hardness and needs to be bent frequently, undesirable phenomena such as wrinkles or partial bending are likely to occur in the bending area of the display module.

Application content

In view of this, the present application provides a display device, a manufacturing method, and an electronic device. Different parts of the flexible display module are controlled to have different elastic moduli, that is, the elastic modulus of the bending part is smaller than that of the non-bending part. Therefore, the flexible display module not only has excellent comprehensive performance, but also reduces the degree of wrinkling and local bending of the flexible display module, which has great practicability.

The first aspect of the present application provides a display device. The display device includes a bending structure and a flexible display module provided on the bending structure. The bending structure can bend and drive the flexible display The module is bent, and the flexible display module includes a bent portion and a non-bending portion, and the elastic modulus of the bending portion is smaller than the elastic modulus of the non-bending portion.

In the display device provided by the first aspect of the present application, the flexible display module is arranged into a bent portion and a non-bending portion, and the elastic modulus of the bending portion is smaller than the elastic modulus of the non-bending portion. Through the above arrangement, the bending part with a smaller elastic modulus is used for the bending of the flexible display module, while for the non-bending part that does not need to be bent, the elastic modulus can be increased, thereby improving the overall flexibility The hardness of the display module solves the problem of excess performance of the flexible display module. In addition, since only the bending part has a small elastic modulus, the elastic modulus of the non-bending part is greater than the elastic modulus of the bending part. Therefore, for the flexible display module, internal friction will only be generated in the bending part, which is equivalent to reducing the range of internal friction, increasing the bending and rebound performance of the flexible display module, and effectively reducing the bending part. The degree of wrinkling and local bending.

A second aspect of the present application provides a method of manufacturing a display device, the method of manufacturing includes:

Provide bending structure; and

A flexible display module is formed on the bending structure, the flexible display module includes a bending portion and a non-bending portion, and the elastic modulus of the bending portion is smaller than the elastic modulus of the non-bending portion.

The manufacturing method of the display device provided in the second aspect of the present application has a simple manufacturing process and low cost. A flexible display module including a bending part and a non-bending part is prepared, and the elastic modulus of the bending part is less than The elastic modulus of the non-bending part. It can effectively improve the rigidity of the flexible display module, reduce the range of internal friction, increase the performance of bending and rebound, and effectively reduce the wrinkle phenomenon and the degree of local bending phenomenon generated by the bending part.

A third aspect of the present application provides an electronic device. The electronic device includes a housing, and a motherboard and a display device arranged in the housing. The motherboard is electrically connected to the display device. The display device includes The display device provided in the first aspect of the present application.

The electronic equipment provided in the third aspect of the present application, by using the display device provided in the first aspect of the present application, can effectively improve the hardness of the electronic equipment, reduce the range of internal friction, increase the performance of bending and rebound, and effectively reduce the flexibility Displays the degree of wrinkles and local bending in the bending part of the module.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will describe the drawings that need to be used in the embodiments of the present application.

FIG. 1 is a schematic diagram of the structure of a display device in an embodiment of the application.

FIG. 2 is a schematic diagram of the display device in the embodiment of the application after bending.

Fig. 3 is a schematic diagram of a bending structure in an embodiment of the application.

4 is a schematic diagram of a flexible display module in the first embodiment of the application.

FIG. 5 is a schematic diagram of a flexible display module in the second embodiment of this application.

FIG. 6 is a schematic diagram of a flexible display module in the third embodiment of this application.

FIG. 7 is a schematic diagram of a flexible display module in the fourth embodiment of this application.

Fig. 8 is a cross-sectional view in the direction A-A in Fig. 7.

FIG. 9 is a schematic diagram of a flexible display module in the fifth embodiment of this application.

FIG. 10 is a schematic diagram of the structure of the display device in the first embodiment of this application.

FIG. 11 is a schematic structural diagram of a display device in the second embodiment of this application.

FIG. 12 is a schematic structural diagram of a display device in the third embodiment of this application.

FIG. 13 is a schematic structural diagram of a display device in the fourth embodiment of this application.

FIG. 14 is a schematic diagram of the structure of the display device in the fifth embodiment of this application.

FIG. 15 is a schematic structural diagram of a display device in the sixth embodiment of this application.

FIG. 16 is a schematic structural diagram of a display device in the seventh embodiment of this application.

FIG. 17 is a schematic structural diagram of a display device in the eighth embodiment of this application.

FIG. 18 is a process flow diagram of a manufacturing method of a display device in an embodiment of the application.

Figure 19 is a schematic diagram of the structure of the display device during the manufacturing process.

FIG. 20 is a schematic diagram of an electronic device in an embodiment of this application.

Description of the drawings:

Display device-1, flexible display module-10, bending part-11, sub-bending part-111, non-bending part-12, first end-13, second end-14, middle part-15, transition Part-16, substrate-110, support layer-120, first support part-121, second support part-122, display screen-130, encapsulation layer-140, polarizer-150, first polarizer-151, first Two polarizing part-152, touch panel-160, first touch part-161, second touch part-162, cover plate-170, first protection part-171, second protection part-172, optical adhesive layer -180, first connection part -181, second connection part -182, first optical adhesive layer -183, second optical adhesive layer -184, third optical adhesive layer -185, buffering part -186, first part- 187, the second part-188, the third part-189, bending structure-20, shaft part-21, shaft-211, housing-22, first housing-221, second housing-222, electronic equipment -2, shell-3, motherboard-4.

Detailed ways

The following are the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made, and these improvements and modifications are also regarded as the original The scope of protection applied for.

Please refer to FIG. 1, which is a schematic structural diagram of a display device in an embodiment of this application. The embodiment of the present application provides a display device 1, the display device 1 includes a bending structure 20 and a flexible display module 10 provided on the bending structure 20. The bending structure 20 can be bent and drive the flexible display module 10 to bend. The flexible display module 10 includes a bending portion 11 and a non-bending portion 12, and the elastic modulus of the bending portion 11 is smaller than the elastic modulus of the non-bending portion 12.

Next, this application first briefly introduces the display device 1 and various components.

The display device 1 mainly plays a display role in the electronic device 2, and is used to convert electrical signals into optical signals and emit light to form images, or text, or videos, etc., for users to watch. In addition, the display device 1 can also receive user operations and partial instructions. Among them, the display device 1 usually has a display area and a non-display area, and the display area is usually an area for displaying text, pictures, videos, etc. The non-display area is usually arranged at the periphery of the display area, and the non-display area is usually opaque to shield the wiring and the like in the display device 1. Optionally, the display device 1 may not include a non-display area, so that it is configured as a full-screen structure. Further optionally, when the display device 1 does not include a non-display area and constitutes a full screen, devices such as a distance sensor, an ambient light sensor, a front camera, etc. can be arranged in the containing space formed by the display device 1 and the housing 22, and are located The display area of the display device 150. In addition, the display device 1 provided by the present application may be, but is not limited to, a liquid crystal display (LCD) device or an organic light-emitting diode (OLED) device. Optionally, the display device 1 provided in the present application is a flexible display device.

The display device 1 usually includes a bending structure 20, and the bending structure 20 provided in the present application mainly functions to support the flexible display module 10 and the bending flexible display module 10. The function of supporting the flexible display module 10 mainly refers to fixing and supporting the flexible display module 10 on the bending structure 20. The function of the bending flexible display module 10 mainly refers to that the bending structure 20 can be bent, and since the flexible display module 10 is fixed and supported on the bending structure 20, the bending of the bending structure 20 can further drive flexibility. The display module 10 is bent, and finally the display device 1 is bent. Optionally, the bending structure 20 may be bent in a direction away from the flexible display module 10, or the bending structure 20 may be bent in a direction close to the flexible display module 10. Please also refer to FIG. 2, which is a schematic diagram of the display device in the embodiment of the application after bending. As shown in FIG. 2, the present application illustrates that the bending structure 20 is bent in a direction away from the flexible display module 10, so that the flexible display module 10 is provided on opposite sides of the bent display device 1. This not only reduces the area of the flexible display module 10 on one side of the display device 1, but also allows the user to see the image displayed by the flexible display module 10 on each side of the display device 1, which increases the user’s visibility. Operability and portability of the electronic device 2.

Please also refer to FIG. 3, which is a schematic diagram of the bending structure in the embodiment of this application. The bending structure 20 includes, but is not limited to, a housing 22 connected to a shaft portion 21 and the shaft portion 21. The shaft portion 21 is mainly used to bend and drive the housing 22 to rotate, and finally make the bending structure 20 Make a bend. The rotating shaft portion 21 is arranged corresponding to the bending portion 11 of the flexible display module 10, and when the rotating shaft portion 21 is bent, the corresponding bending portion 11 will also be bent. Therefore, the bending of the bending structure 20 can further drive the bending of the flexible display module 10. Optionally, the orthographic projection of the bending portion 11 on the bending structure 20 overlaps with the rotating shaft portion 21 or covers the rotating shaft portion 21. The position of the shaft portion 21 should be set according to the position of the bending portion 11. In the following, the rotating shaft portion 21 is located in the middle of the bending structure 20 for schematic description. As shown in FIG. 3, the shaft portion 21 is located in the middle of the bending structure 20, and the casing 22 includes a first casing 221 and a second casing 222. The first casing 221 is located on one side of the shaft portion 21, so The second is located on the other side of the shaft portion 21. Of course, in other embodiments, it is also feasible that the shaft portion 21 is provided at other positions of the bending structure 20.

Please refer to FIG. 3 again. The rotating shaft portion 21 includes a plurality of rotating shafts 211 arranged at intervals. The distance of the gap between two adjacent rotating shafts 211 gradually increases from the direction close to the flexible display module 10 to the direction away from the flexible display module 10. This is because when the bending structure 20 is bent, the angle of bending in the direction close to the flexible display module 10 is smaller than the angle of bending in the direction away from the flexible display module 10. Therefore, when the bending structure 20 is bent in a direction away from the flexible display module 10, its bending effect can be further improved. Further optionally, the cross-sectional shape of the rotating shaft 211 may be an inverted trapezoid. In addition, the number of rotating shafts 211 and the maximum gap between adjacent surfaces of two adjacent rotating shafts 211 can be set according to the curvature of the bending structure 20 and the angle of the bending. The greater the number of shafts 211, the larger the bending surface formed during bending and the finer the bending. The larger the maximum gap between the adjacent surfaces of two adjacent shafts 211, the bending structure 20 can bend. The larger the angle, the smaller the bending radius.

The flexible display module 10 provided in the present application is arranged on the bending structure 20 as the display surface of the display device 1. In the embodiments of the present application, the flexible display module 10 may be a flat surface. Of course, in other embodiments of the present application, the flexible display module 10 may also be a curved surface with a certain angle at a portion corresponding to the bending structure 20. As mentioned above, when the flexible display module 10 is to be bent for display, the bending of the bending structure 20 further causes the flexible display module 10 to bend.

In the related art, the elastic modulus of the non-bending portion 12 is the same as the elastic modulus of the bending portion 11, which is usually prepared by using a flexible material through an integral molding process. Therefore, the overall elastic modulus of the flexible display module 10 is Smaller, the flexible display module 10 is "soft" and has poor impact resistance and scratch resistance. But in fact, when the flexible display module 10 is bent, only the bending part 11 needs to be bent, and the non-bending part 12 does not need to be bent. The non-bending part 12 does not occur during the bending process. deformation. Therefore, setting both the bending portion 11 and the non-bending portion 12 into a structure with a lower elastic modulus will sacrifice the hardness of the non-bending portion 12, thereby reducing the hardness and rigidity of the entire flexible display module 10, and there is a problem of excessive performance utilization. . In addition, when the bending portion 11 is repeatedly bent, internal friction will inevitably occur between the molecules of the internal material of the flexible display module 10 due to movement. After the internal friction accumulates to a certain level, the flexible display module 10 will exhibit wrinkles or partial bending on a macroscopic level, thereby reducing the appearance, bending performance, and service life of the flexible display module 10.

In order to solve the above-mentioned problems, the display device 1 provided by the embodiment of the present application has a flexible display module 10 configured as a bent portion 11 and a non-bending portion 12, and the elastic modulus of the bending portion 11 is made smaller than the non-bending portion. The modulus of elasticity of the bent portion 12. With the above arrangement, the bending portion 11 with a smaller elastic modulus is used for bending the flexible display module 10, so that the flexible display module 10 is bent as in the related art. As for the non-bending part 12 that does not need to be bent, the elastic modulus can be increased. Thus, the rigidity of the entire flexible display module 10 is improved. In this way, the flexible display module 10 can have excellent overall performance, that is, at the bending part 11 that needs to be bent, its elastic modulus is reduced, so that it has excellent bending performance, and it is not necessary for non-flexible parts. The elastic modulus of the bending portion 12 is greater than that of the bending portion 11 to improve the hardness and rigidity of the flexible display module 10, improve its impact resistance and scratch resistance, and solve the excessive performance of the flexible display module 10 The problem. In addition, since only the bent portion 11 has a small modulus of elasticity, the elastic modulus of the unbent portion 12 is larger than that of the bent portion 11. Therefore, for the flexible display module 10, internal friction is only generated in the bending portion 11, which reduces the range of internal friction, increases the bending and rebound performance of the flexible display module 10, and effectively reduces the bending The degree of wrinkle phenomenon and local bending phenomenon in the folded portion 11. Therefore, the present application controls different parts of the flexible display module 10 to have different elastic moduli, so that the flexible display module 10 not only has excellent comprehensive performance, but also reduces the wrinkles and local bending of the flexible display module 10. Degree, has great practicality. The specific implementation of making the elastic modulus of the bending portion 11 smaller than the elastic modulus of the non-bending portion 12 will be described in detail later.

In addition, the bending portion 11 and the non-bending portion 12 have various positional relationships. For example, the non-bending portion 12 is located on one side of the bending portion 11; the non-bending portion 12 is located on opposite sides of the bending portion 11; or the bending portion 11 includes a plurality of sub-bending portions 111. An example is given below.

Please also refer to FIG. 4, which is a schematic diagram of the flexible display module in the first embodiment of this application. In the embodiment of the present application, the flexible display module 10 includes a first end 13, a second end 14, and an intermediate portion 15 connected between the first end 13 and the second end 14, which are arranged oppositely. The bending portion 11 is located at the first end 13 or the second end 14. The “first end 13” and “second end 14” mentioned in this application refer to the opposite ends of the flexible display module 10, namely the first end 13 and the second end 14, and the “middle part 15” refers to The portion of the flexible display module 10 excluding the first end 13 and the second end 14 is the middle portion 15. In the embodiment of the present application, the bending portion 11 is located at the first end 13 or the second end 14. At this time, the non-bending portion 12 is located on one side of the bending portion 11. Specifically, as shown in FIG. 4, this application illustrates that the bent portion 11 is located at the first end 13. When the bending portion 11 is located at the first end 13, the non-bending portion 12 is located at the second end 14 and the middle portion 15. When the bending portion 11 is located at the second end 14, the non-bending portion 12 is located at the first end 13 and the middle portion 15. When the bent portion 11 is located at the first end 13 or the second end 14, the bent portion 11 can be bent, and the bent portion 11 can not only reduce the flexibility of the display device 1 side after bending. The area of the display module 10 can also enable the display device 1 to be supported on places such as a desktop or the ground to change the placement direction of the display device 1. For example, in the related art, the display device 1 is usually placed horizontally on the desktop, but the display device 1 provided in this application can be placed at a certain angle between the display device 1 and the desktop, or even the display device 1 can be placed vertically on the desktop. on.

Please also refer to FIG. 5, which is a schematic diagram of the flexible display module in the second embodiment of this application. The flexible display module 10 provided by the second embodiment of the present application has basically the same structure as the flexible display module 10 provided by the first embodiment of the present application. The difference is that in the embodiment of the present application, the bent portion 11 is located in the middle.部15. In the present application, the bending portion 11 is provided in the middle portion 15, and the non-bending portion 12 is located on opposite sides of the bending portion 11 at this time. When the bending portion 11 is bent, the area of the flexible display module 10 on the side of the display device 1 can be further reduced.

Please also refer to FIG. 6, which is a schematic diagram of a flexible display module in the third embodiment of this application. The flexible display module 10 provided by the third embodiment of the present application has basically the same structure as the flexible display module 10 provided by the first embodiment of the present application. The difference is that in the present embodiment, the first end 13 and the flexible display module 10 The second end 14 is symmetrical with respect to the bending portion 11. This embodiment can also be understood that the bending portion 11 is provided in the middle of the flexible display module 10, that is, the bending portion 11 is provided in the center of the flexible display module 10, so that the first end 13 And the second end 14 is symmetrically arranged with respect to the bending portion 11. In the present application, the bending portion 11 is arranged in the middle of the flexible display module 10, which can not only further reduce the area of the flexible display module 10 on one side of the display device 1, but also make the flexible display modules on both sides of the display device 1. 10 Symmetrical arrangement makes the appearance of the display device 1 beautify, and improves the operability and playability of the display device 1.

Please refer to FIG. 7 and FIG. 8 together. FIG. 7 is a schematic diagram of a flexible display module in the fourth embodiment of this application; FIG. 8 is a cross-sectional view in the direction of A-A in FIG. 7. The flexible display module 10 provided by the fourth embodiment of the present application has basically the same structure as the flexible display module 10 provided by the first embodiment of the present application. The difference is that in the embodiment of the present application, the non-bending portion 12 The number is multiple. The bending portion 11 includes a plurality of sub-bending portions 111 arranged at intervals, and the sub-bending portions 111 are disposed between two adjacent non-bending portions 12. Each sub-bending portion 111 can bend the flexible display module 10, so the arrangement of multiple sub-bending portions 111 can make the flexible display module 10 bend multiple times, not only can further reduce the display device 1 The area of the flexible display module 10 on the side can also be controlled by controlling the bending angle of the sub-bending part 111 to improve the user's visual experience. As shown in FIG. 7, the present application illustrates that the bending portion 11 includes two sub-bending portions 111. The two sub-bending portions 111 are arranged on opposite sides of the flexible display module 10 at intervals, and the non-bending portion 12 is provided on the opposite sides of the sub-bending portion 111. As shown in FIG. 8, when the sub-bending portion 111 is bent at a certain angle toward the direction close to the flexible display module 10, the flexible display module 10 can become a curved flexible display module 10, which can bring a curved flexible display to the user The visual effect of the module 10 greatly enhances the user's visual experience.

Please also refer to FIG. 9, which is a schematic diagram of a flexible display module in the fifth embodiment of this application. The structure of the flexible display module 10 provided by the fifth embodiment of the present application is basically the same as that of the flexible display module 10 provided by the third embodiment of the present application. The difference is that in the embodiment of the present application, the bending portion 11 is A transition portion 16 is also provided between the non-bending portions 12. The elastic modulus of the transition portion 16 is greater than the elastic modulus of the bending portion 11 and smaller than the elastic modulus of the non-bending portion 12. It can be seen from the above that the flexible display module 10 is designed into a bent portion 11 and a non-bending portion 12, and the bending portion 11 is used to improve the bending performance of the display device 1, and the non-bending portion 12 is used to enhance the display device. 1. Impact resistance and scratch resistance. However, there is a sudden change area of the elastic modulus at the junction of the bending portion 11 and the non-bending portion 12. Therefore, the present application provides a transition portion 16 between the bending portion 11 and the non-bending portion 12, and the elastic modulus of the transition portion 16 is greater than the elastic modulus of the bending portion 11 and smaller than The elastic modulus of the non-bending portion 12. The function of the transition part 16 is equivalent to the buffer zone in the flexible flexible display module 10. The elastic modulus of the transition part 16 is between the elastic modulus of the bending part 11 and the elastic modulus of the non-bending part 12. The flexible display module 10 is easily broken.

Optionally, in the embodiment of the present application, the elastic modulus of the transition portion 16 gradually increases from the direction of the bending portion 11 to the non-bending portion 12. This application gradually increases the elastic modulus of the transition portion 16 from the bending portion 11 to the non-bending portion 12, which can further alleviate the elastic modulus of the bending portion 11 and the elastic modulus of the non-bending portion 12. The sudden change between the quantities makes the elastic modulus transition more smoothly, further alleviating the problem of easy breakage of the flexible display module 10, and improving the performance of the display device 1.

Optionally, in the embodiment of the present application, the elastic modulus of the bending portion 11 is 5-10 GPa, and the elastic modulus of the non-bending portion 12 is 50-100 GPa. In the embodiment of the present application, the elastic modulus of the transition portion 16 is greater than 10 GPa and less than 50 GPa. When the elastic modulus of the bent portion 11 is 5-10 GPa, the elastic modulus of the bent portion 11 is relatively small. At this time, the bending performance of the bent portion 11 is better, and the bent portion 11 is easy to bend. When the elastic modulus of the non-bending portion 12 is 50-100 GPa, and the elastic modulus of the non-bending portion 12 is larger, the hardness and rigidity of the non-bending portion 12 are better at this time, and the flexible display module 10 can be improved The protective properties, such as impact resistance and scratch resistance. Moreover, since the elastic modulus of the bending portion 11 and the non-bending portion 12 are quite different, further control of internal friction will only occur in the bending portion 11, reducing the range of internal friction and increasing the flexible display module 10. The performance of bending and resilience effectively reduces the degree of wrinkles and local bending of the bending portion 11. When the elastic modulus of the transition portion 16 is greater than 10 GPa and less than 50 GPa. When the elastic modulus of the bending portion 11 is 5-10 GPa, the elastic modulus of the transition portion 16 is between the elastic modulus of the bending portion 11 and the elastic modulus of the non-bending portion 12, and the transition portion 16 can be The problem of easy breakage of the flexible display module 10 caused by the sudden change of the elastic modulus between the bending portion 11 and the non-bending portion 12 is alleviated. Further optionally, the elastic modulus of the bending portion 11 is 6-8 GPa, and the elastic modulus of the non-bending portion 12 is 60-80 GPa. The elastic modulus of the transition portion 16 is greater than 8 GPa and less than 60 GPa.

It can be seen from the above content that the present application divides the flexible display module 10 into a bending portion 11 and a non-bending portion 12, and makes the elastic modulus of the bending portion 11 smaller than that of the non-bending portion 12. The reason why the flexible display module 10 can be configured in this way is the effect brought about by the specific structure of the flexible display module 10. The specific structure of the flexible display module 10 will be described in detail below in this application.

Please refer to FIG. 10, FIG. 11, and FIG. 12. FIG. 10 is a schematic diagram of the structure of the display device in the first embodiment of this application; FIG. 11 is a schematic diagram of the structure of the display device in the second embodiment of this application; A schematic diagram of the structure of the display device in the third embodiment of the application. The structure of the display device 1 provided by the first embodiment, the second embodiment, and the third embodiment of the present application is substantially the same as the structure of the display device 1 of FIG. 1, except that the first embodiment and the second embodiment of the present application In the third embodiment, the flexible display module 10 includes a substrate 110 stacked on the bending structure 20, a support layer 120, a display screen 130, an encapsulation layer 140, a polarizer 150, and a touch panel 160. , And cover 170. The flexible display module 10 further includes an optical adhesive layer 180, and the optical adhesive layer 180 includes a first connecting portion 181 and a second connecting portion 182. The first connecting portion 181 is provided corresponding to the bending portion 11, and the second connecting portion 182 is provided corresponding to the non-bending portion 12. The elastic modulus of the first connecting portion 181 is smaller than the elastic modulus of the second connecting portion 182. The optical adhesive layer 180 includes any one or more of the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185. The first optical adhesive layer 183 is disposed between the substrate 110 and the supporting layer 120. The second optical adhesive layer 184 is disposed between the polarizer 150 and the touch panel 160. The third optical adhesive layer 185 is disposed between the touch panel 160 and the cover 170.

In this embodiment, the substrate 110, the support layer 120, the display screen 130, the encapsulation layer 140, the polarizer 150, the touch panel 160, and the cover plate 170 are conventional structures, which will not be repeated in this application. In the related art, the optical adhesive layer 180 is used to connect the transparent optical adhesive layer 180 between two functional layers to closely connect the two functional layers together. In this application, an optical adhesive layer 180 is provided, and the optical adhesive layer 180 includes a first connecting portion 181 and a second connecting portion 182, and the elastic modulus of the first connecting portion 181 is smaller than that of the second connecting portion. 182 modulus of elasticity. Since the first connecting portion 181 is provided corresponding to the bending portion 11, and the second connecting portion 182 is provided corresponding to the non-bending portion 12, the elastic modulus of the bending portion 11 of the flexible display module 10 is smaller than that of the non-bending portion 12. The modulus of elasticity of the bent portion 12. In addition, the optical adhesive layer 180 includes any one or more of the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185. In the present application, the number and position of the optical adhesive layer 180 can be used to further make the elastic modulus of the bending portion 11 smaller than that of the non-bending portion 12. Optionally, the optical adhesive layer 180 includes any one of the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185. Or the optical adhesive layer 180 includes any two of the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185. Or the optical adhesive layer 180 includes a first optical adhesive layer 183, a second optical adhesive layer 184, and a third optical adhesive layer 185.

Hereinafter, this application will give a few typical examples for illustration. As shown in FIG. 10, this embodiment is illustrated when there is only one optical adhesive layer 180, that is, the first optical adhesive layer 183. At this time, the first optical adhesive layer 183 is disposed between the substrate 110 and the supporting layer 120. Since the first optical adhesive layer 183 includes a first connecting portion 181 and a second connecting portion 182, and the elastic modulus of the first connecting portion 181 is smaller than the elastic modulus of the second connecting portion 182. Therefore, the elastic modulus of the bending portion 11 in the flexible display module 10 is smaller than the elastic modulus of the non-bending portion 12. As shown in FIG. 11, in this embodiment, the optical adhesive layer 180 includes two layers, namely, a first optical adhesive layer 183 and a second optical adhesive layer 184. At this time, the first optical adhesive layer 183 is provided between the substrate 110 and the supporting layer 120, and the second optical adhesive layer 184 is provided between the polarizer 150 and the touch panel 160. Similarly, the arrangement of the first connecting portion 181 and the second connecting portion 182 further makes the elastic modulus of the bending portion 11 in the flexible display module 10 smaller than the elastic modulus of the non-bending portion 12. As shown in FIG. 12, this embodiment is illustrated when the optical adhesive layer 180 includes three layers, namely, a first optical adhesive layer 183, a second optical adhesive layer 184, and a third optical adhesive layer 185. At this time, the first optical adhesive layer 183 is provided between the substrate 110 and the support layer 120, the second optical adhesive layer 184 is provided between the polarizer 150 and the touch panel 160, and the third optical adhesive layer The layer 185 is provided between the touch panel 160 and the cover 170. Similarly, the arrangement of the first connecting portion 181 and the second connecting portion 182 further makes the elastic modulus of the bending portion 11 in the flexible display module 10 smaller than the elastic modulus of the non-bending portion 12. In addition, how to make the optical adhesive layer 180 have the above-mentioned structure and performance will be described in detail later in this application.

Please also refer to FIG. 13, which is a schematic diagram of the structure of the display device in the fourth embodiment of this application. The structure of the display device 1 provided by the fourth embodiment of the present application is substantially the same as the structure of the display device 1 provided by the third embodiment of the present application. The difference is that, in the embodiment of the present application, the first connecting portion 181 is A buffer portion 186 is further provided between the second connecting portion 182, and the buffer portion 186 is provided corresponding to the transition portion 16, and the elastic modulus of the buffer portion 186 is greater than the elastic modulus of the first connecting portion 181, It is smaller than the elastic modulus of the second connecting portion 182. The arrangement of the buffer portion 186 makes the flexible display module 10 include the transition portion 16, and since the elastic modulus of the buffer portion 186 is greater than that of the first connecting portion 181 and smaller than that of the second connecting portion 182 The modulus of elasticity, therefore, the modulus of elasticity of the transition portion 16 is greater than the modulus of elasticity of the bending portion 11 and smaller than the modulus of elasticity of the non-bending portion 12. As shown in FIG. 13, the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185 of this embodiment are all provided with a buffer portion 186, so that the elastic modulus of the transition portion 16 is further greater than The elastic modulus of the bending portion 11 is smaller than the elastic modulus of the non-bending portion 12.

Please also refer to FIG. 14, which is a schematic structural diagram of the display device in the fifth embodiment of this application. In the embodiment of the present application, the flexible display module 10 includes a substrate 110, a support layer 120, and a display screen 130 stacked on the bending structure 20, and the support layer 120 is used to support the display screen 130. The display screen 130 is provided on the support layer 120, the support layer 120 includes a first support portion 121 and a second support portion 122, the first support portion 121 is provided corresponding to the bending portion 11, so The second supporting portion 122 is provided corresponding to the non-bending portion 12, and the elastic modulus of the first supporting portion 121 is smaller than the elastic modulus of the second supporting portion 122.

This embodiment is not only limited to the flexible display module 10 including the substrate 110, the supporting layer 120, and the display screen 130. The flexible display module 10 may also include other components, and the specific structure and position of the components are not limited in this application. The supporting layer 120 fixes and supports the display screen 130 on the substrate 110 in the related art. In this application, the supporting layer 120 is provided, and the supporting layer 120 includes a first supporting portion 121 and a second supporting portion 122, and the elastic modulus of the first supporting portion 121 is smaller than the elastic modulus of the second supporting portion 122 . Since the first supporting portion 121 is provided corresponding to the bending portion 11, and the second supporting portion 122 is provided corresponding to the non-bending portion 12, the elastic modulus of the bending portion 11 of the flexible display module 10 is It is smaller than the elastic modulus of the non-bending portion 12.

Please also refer to FIG. 15, which is a schematic structural diagram of a display device in the sixth embodiment of this application. In the embodiment of the present application, the flexible display module 10 includes a display screen 130, an encapsulation layer 140, and a polarizer 150 that are stacked on the bending structure 20, and the encapsulation layer 140 is used to protect the display screen. 130 for packaging, the polarizer 150 is disposed on the encapsulation layer 140, the polarizer 150 is used to filter the light emitted from the display screen 130, and the polarizer 150 includes a first polarizer 151 and The second polarizing part 152, the first polarizing part 151 is disposed corresponding to the bending part 11, the second polarizing part 152 is disposed corresponding to the non-bending part 12, the elastic modulus of the first polarizing part 151 It is smaller than the elastic modulus of the second polarizing part 152.

This embodiment is not only limited to the flexible display module 10 including the display screen 130, the packaging layer 140, and the polarizer 150. The flexible display module 10 may also include other components, and the specific structure and position of the components are not limited in this application. The polarizer 150 is used to filter light emitted from the display screen 130 in the related art. In this application, the polarizer 150 is provided, and the polarizer 150 includes a first polarizer 151 and a second polarizer 152. The elastic modulus of the first polarizer 151 is smaller than that of the second polarizer 152. Modulus. Since the first polarizing portion 151 is disposed corresponding to the bending portion 11, and the second polarizing portion 152 is disposed corresponding to the non-bending portion 12, the elastic modulus of the bending portion 11 of the flexible display module 10 is It is smaller than the elastic modulus of the non-bending portion 12.

Please also refer to FIG. 16, which is a schematic structural diagram of a display device in the seventh embodiment of this application. In the embodiment of the present application, the flexible display module 10 includes a display screen 130, a touch panel 160, and a cover 170 stacked on the bending structure 20, and the touch panel 160 is disposed on the display On the screen 130, the cover 170 is provided on the touch panel 160. The touch panel 160 is used to receive user touch information. The touch panel 160 includes a first touch portion 161 and a second touch portion 161. The touch portion 162, the first touch portion 161 is provided corresponding to the bending portion 11, the second touch portion 162 is provided corresponding to the non-bending portion 12, the elasticity of the first touch portion 161 The modulus is smaller than the elastic modulus of the second touch portion 162.

This embodiment is not only limited to the flexible display module 10 including the display screen 130, the touch panel 160, and the cover 170. The flexible display module 10 may also include other components, and the specific structure and position of the components are not limited in this application. The touch panel 160 is used to receive user touch information in the related art. In this application, a touch panel 160 is provided, and the touch panel 160 includes a first touch portion 161 and a second touch portion 162, and the elastic modulus of the first touch portion 161 is smaller than that of the second touch portion 162. The elastic modulus of the touch portion 162. Since the first touch portion 161 is provided corresponding to the bending portion 11, and the second touch portion 162 is provided corresponding to the non-bending portion 12, the flexibility of the bending portion 11 of the flexible display module 10 The modulus is smaller than the elastic modulus of the non-bending portion 12.

Please also refer to FIG. 17, which is a schematic structural diagram of a display device in the eighth embodiment of this application. In the embodiment of the present application, the flexible display module 10 includes a display screen 130, a touch panel 160, and a cover 170 stacked on the bending structure 20, and the touch panel 160 is disposed on the display On the screen 130, the cover 170 is disposed on the touch panel 160. The cover 170 includes a first protection portion 171 and a second protection portion 172, and the first protection portion 171 corresponds to the bending portion 11, the second protection portion 172 is provided corresponding to the non-bending portion 12, and the elastic modulus of the first protection portion 171 is smaller than that of the second protection portion 172.

This embodiment is not only limited to the flexible display module 10 including the display screen 130, the touch panel 160, and the cover 170. The flexible display module 10 may also include other components, and the specific structure and position of the components are not limited in this application. The cover 170 is used to protect the flexible display module 10 in the related art. In this application, a cover plate 170 is provided, and the cover plate 170 includes a first protection portion 171 and a second protection portion 172. The elastic modulus of the first protection portion 171 is smaller than that of the second protection portion 172. Modulus. Since the first protection portion 171 is provided corresponding to the bending portion 11, and the second protection portion 172 is provided corresponding to the non-bending portion 12, the elastic modulus of the bending portion 11 of the flexible display module 10 is It is smaller than the elastic modulus of the non-bending portion 12.

The above is the detailed structure of the display device 1 of the present application. According to the embodiment of the present application, a manufacturing method of the display device 1 is also provided. This method can be used to prepare the display device 1 of the above scheme. Of course, the display device 1 can also be prepared using other preparation methods, which is not limited in this application. The display device 1 and the manufacturing method of the display device 1 provided in the embodiments of the present application can be used in combination or used alone, which does not affect the essence of the present application.

Please refer to FIG. 18, which is a process flow diagram of a manufacturing method of a display device in an embodiment of this application. The embodiment of the present application provides a manufacturing method of the display device 1, and the manufacturing method includes S100 and S200. The details of S100 and S200 are as follows.

S100, provides a bending structure 20. and

S200. A flexible display module 10 is formed on the bending structure 20. The flexible display module 10 includes a bending portion 11 and a non-bending portion 12, and the elastic modulus of the bending portion 11 is smaller than that of the non-bending portion. The modulus of elasticity of the bent portion 12.

The manufacturing method of the display device 1 provided by the embodiment of the present application has a simple manufacturing process and low cost. The flexible display module 10 including the bending portion 11 and the non-bending portion 12 is prepared, and the bending portion 11 is The elastic modulus is smaller than that of the non-bending portion 12. It can effectively increase the rigidity of the flexible display module 10, reduce the range of internal friction, increase the performance of bending and rebound, and effectively reduce the wrinkle phenomenon and the degree of local bending phenomenon generated by the bending portion 11.

In addition, please also refer to FIG. 19, which is a schematic diagram of the structure of the display device during the manufacturing process. In the embodiment of the present application, the flexible display module 10 includes a substrate 110 formed on the bending structure 20, a support layer 120, a display screen 130, an encapsulation layer 140, a polarizer 150, a touch panel 160, and a cover plate. 170, and an optical adhesive layer 180, the optical adhesive layer 180 includes a first part 187 and a second part 188, the first part 187 is disposed corresponding to the bending part 11, the second part 188 corresponds to the non The bending portion 12 is provided, and the second portion 188 is used to form a second connecting portion 182 by a curing method, and the first portion 187 forms a first connecting portion 181, and the elastic modulus of the first connecting portion 181 is less than The elastic modulus of the second connecting portion 182; the optical adhesive layer 180 includes any one or more of the first optical adhesive layer 183, the second optical adhesive layer 184, and the third optical adhesive layer 185, so The first optical adhesive layer 183 is provided between the substrate 110 and the support layer 120, the second optical adhesive layer 184 is provided between the polarizer 150 and the touch panel 160, and the The three optical adhesive layers 185 are disposed between the touch panel 160 and the cover 170. In this embodiment, the optical adhesive layer 180 includes a first optical adhesive layer 183, a second optical adhesive layer 184, and a third optical adhesive layer 185.

As mentioned above, in the present application, the optical adhesive layer 180 can be provided so that the optical adhesive layer 180 includes the first connecting portion 181 and the second connecting portion 182, and the elastic modulus of the first connecting portion 181 is less than The elastic modulus of the second connecting portion 182 is described. Since the first connecting portion 181 is provided corresponding to the bending portion 11, and the second connecting portion 182 is provided corresponding to the non-bending portion 12, the elastic modulus of the bending portion 11 of the flexible display module 10 is smaller than that of the non-bending portion 12. The modulus of elasticity of the bent portion 12. In the specific preparation process, it is possible to first install between the substrate 110 and the support layer 120, between the polarizer 150 and the touch panel 160, and between the touch panel 160 and the cover 170. The first part 187 and the second part 188 are formed between, and then the second part 188 is cured by a curing method to form the second connecting part 182, so the elastic modulus of the second connecting part 182 will be greater than that of the first connecting part The elastic modulus of 181 finally makes the elastic modulus of the corresponding non-bending portion 12 greater than the elastic modulus of the bending portion 11. Optionally, the material of the optical adhesive layer 180 provided in the present application may be Optically Clear Adhesive (OCA). Optionally, in the embodiment of the present application, the curing method includes, but is not limited to, any one or more of an ultraviolet curing method, a thermal curing method, and an electron beam curing method. The curing method mentioned above in this application may be any one or more of ultraviolet curing method, thermal curing method, and electron beam curing method. For example, when the ultraviolet curing method is used, the elastic modulus of the second connecting portion 182 can be controlled by controlling the intensity of the ultraviolet light and the irradiation time. When the thermal curing method is adopted, the elastic modulus of the second connecting portion 182 can be controlled by controlling the heating temperature and time. When the electron beam curing method is adopted, the elastic modulus of the second connecting portion 182 can be controlled by controlling the energy and time of the electron beam. Optionally, when an ultraviolet light curing method is used, the wavelength of the ultraviolet light is 320-400 nm.

In addition, in the embodiment of the present application, a transition portion 16 is further provided between the bending portion 11 and the non-bending portion 12, and the elastic modulus of the transition portion 16 is greater than that of the bending portion 11. Is smaller than the elastic modulus of the non-bending portion 12; a third portion 189 is also provided between the first portion 187 and the second portion 188, and the third portion 189 corresponds to the transition portion 16 is set, the third part 189 is cured to form the buffer part 186, and the elastic modulus of the buffer part 186 is greater than the elastic modulus of the first connecting part 181 and smaller than that of the second connecting part 182 Elastic Modulus.

Optionally, the present application may adopt a curing method to make the third portion 189 form the buffer portion 186, and make the elastic modulus of the buffer portion 186 gradually change from the first connecting portion 181 to the second connecting portion 182. increase. Through the arrangement of the buffer portion 186, the elastic modulus of the transition portion 16 in the flexible display module 10 can be gradually increased from the bending portion 11 to the non-bending portion 12, thereby further alleviating bending The sudden change between the elastic modulus of the portion 11 and the elastic modulus of the non-bending portion 12 makes the elastic modulus transition more smoothly, thereby solving the problem of easy breakage of the flexible display module 10 and improving the performance of the display device 1.

In addition, when preparing the buffer portion 186, the embodiment of the present application is illustrated by controlling the heating temperature. In this application, the second part 188 can be heated by a heating device, but the third part 189 is not directly heated, but the temperature of the second part 188 is controlled to be conducted to the third part 189, thereby indirectly heating the third part 189. Therefore, since the heat will continue to be dissipated in the process of transmission, the heat of the third part 189 away from the second part 188 will be less than the heat of the third part 189 close to the second part 188, and the heat of the third part 189 is removed from the The direction of the first part 187 to the second part 188 gradually increases. Therefore, when the third portion 189 forms the buffer portion 186, the elastic modulus of the buffer portion 186 gradually increases from the first connecting portion 181 to the second connecting portion 182, and finally the elastic modulus of the transition portion 16 The direction from the bending portion 11 to the non-bending portion 12 gradually increases, so as to solve the problem of easy breakage of the flexible display module 10 and improve the performance of the display device 1.

As mentioned above, please refer to FIG. 19 again. In this application, the buffer portion 186 may be provided in the optical adhesive layer 180, so that a transition is also provided between the bending portion 11 and the non-bending portion 12 Part 16, the elastic modulus of the transition part 16 is greater than the elastic modulus of the bending part 11, and is smaller than the elastic modulus of the non-bending part 12. In the specific preparation process, a third part 189 may be further provided between the first part 187 and the second part 188, and then the buffer part 186 is formed by a curing method, so that the buffer part 186 The elastic modulus of is greater than the elastic modulus of the first connecting portion 181 and smaller than the elastic modulus of the second connecting portion 182, so as to achieve the purpose of the present application. Optionally, the present application may adopt any one or more of ultraviolet curing method, thermal curing method, and electron beam curing method to form the buffer layer. Further optionally, in the embodiment of the present application, by controlling any one or more of ultraviolet light irradiation time, heating temperature, heating time, and electron beam irradiation time, the buffer portion 186 is The elastic modulus is greater than the elastic modulus of the first connecting portion 181 and smaller than the elastic modulus of the second connecting portion 182. A few typical examples are described below. When the time of ultraviolet light is controlled, the time of ultraviolet light of the third part 189 can be made shorter than the time of ultraviolet light of the second part 188. In this way, the elastic modulus of the buffer portion 186 can be greater than the elastic modulus of the first connecting portion 181 and smaller than the elastic modulus of the second connecting portion 182. When the heating temperature is controlled, the heating temperature of the third part 189 can be made lower than the heating temperature of the second part 188. In this way, the elastic modulus of the buffer portion 186 can be greater than the elastic modulus of the first connecting portion 181 and smaller than the elastic modulus of the second connecting portion 182.

Please refer to FIG. 20, which is a schematic diagram of an electronic device in an embodiment of this application. The embodiment of the present application provides an electronic device 2, which includes a casing 3, and a main board 4 and a display device 1 arranged in the casing 3, and the main board 4 is electrically connected to the display device 1. The display device 1 includes the display device 1 provided in the embodiment of the present application.

This application provides an electronic device 2. The electronic equipment 2 provided by this application includes, but is not limited to, mobile phones, tablet computers, notebook computers, handheld computers, personal computers (PCs), personal digital assistants (PDAs), portable media players (Portable Media Player, PMP) ), navigation devices, wearable devices, smart bracelets, pedometers and other mobile terminals, and fixed terminals such as digital TVs and desktop computers.

The electronic device 2 provided by the embodiment of the present application can effectively improve the hardness of the electronic device 2 by using the display device 1 provided by the embodiment of the present application, reduce the range of internal friction, increase the performance of bending and rebound, and effectively reduce The degree of wrinkling and local bending of the flexible display module 10.

The above provides a detailed introduction to the content provided by the implementation of the application. This article explains and explains the principles and implementations of the application. The above description is only used to help understand the methods and core ideas of the application; at the same time, for the field General technical personnel, based on the idea of this application, will have changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

A display device, characterized in that, the display device includes a bending structure and a flexible display module arranged on the bending structure, the bending structure can bend and drive the flexible display module to perform Bending, the flexible display module includes a bending portion and a non-bending portion, and the elastic modulus of the bending portion is smaller than the elastic modulus of the non-bending portion.
7. The display device of claim 1, wherein the flexible display module comprises a first end, a second end, and a middle connected between the first end and the second end. Part, the bending part is located in the middle part.
3. The display device of claim 2, wherein the first end and the second end are symmetrical with respect to the bending portion.
7. The display device of claim 2, wherein the number of the non-bending portion is multiple, the bending portion includes a plurality of sub-bending portions arranged at intervals, and the sub-bending portions are disposed at Between two adjacent non-bending portions.
The display device of claim 1, wherein a transition portion is further provided between the bending portion and the non-bending portion, and the elastic modulus of the transition portion is greater than that of the bending portion. The modulus is smaller than the elastic modulus of the non-bending part.
7. The display device of claim 5, wherein the elastic modulus of the transition portion gradually increases from the bending portion to the non-bending portion.
5. The display device of claim 1, wherein the elastic modulus of the bent portion is 5-10 GPa, and the elastic modulus of the non-bending portion is 50-100 GPa.
8. The display device of claim 5, wherein the elastic modulus of the transition portion is greater than 10 GPa and less than 50 GPa.
The display device of claim 5, wherein the flexible display module comprises a substrate, a support layer, a display screen, an encapsulation layer, a polarizer, a touch panel, and a substrate stacked on the bending structure. Cover, the flexible display module further includes an optical adhesive layer, the optical adhesive layer includes a first connecting portion and a second connecting portion, the first connecting portion is provided corresponding to the bending portion, the second connecting Portion corresponding to the non-bending portion, the elastic modulus of the first connecting portion is smaller than the elastic modulus of the second connecting portion; the optical adhesive layer includes a first optical adhesive layer, a second optical adhesive layer, And any one or more of the third optical adhesive layer, the first optical adhesive layer is provided between the substrate and the support layer, and the second optical adhesive layer is provided between the polarizer and the support layer. Between the touch panels, the third optical adhesive layer is provided between the touch panel and the cover plate.
9. The display device of claim 9, wherein a buffer portion is further provided between the first connection portion and the second connection portion, the buffer portion is provided corresponding to the transition portion, and the buffer portion The modulus of elasticity is greater than the modulus of elasticity of the first connecting portion and smaller than the modulus of elasticity of the second connecting portion.
The display device of claim 1, wherein the flexible display module comprises a substrate, a support layer, and a display screen laminated on the bending structure, and the support layer is used to support the display The display screen is provided on the supporting layer, the supporting layer includes a first supporting portion and a second supporting portion, the first supporting portion is provided corresponding to the bending portion, and the second supporting portion is corresponding to The non-bending portion is provided, and the elastic modulus of the first supporting portion is smaller than the elastic modulus of the second supporting portion.
The display device according to claim 1, wherein the flexible display module comprises a display screen, an encapsulation layer, and a polarizer laminated on the bending structure, and the encapsulation layer is used to The display screen is packaged, the polarizer is provided on the encapsulation layer, the polarizer is used to filter light emitted from the display screen, and the polarizer includes a first polarizing part and a second polarizing part, The first polarizing part is disposed corresponding to the bending part, the second polarizing part is disposed corresponding to the non-bending part, and the elastic modulus of the first polarizing part is smaller than the elastic modulus of the second polarizing part .
The display device according to claim 1, wherein the flexible display module comprises a display screen, a touch panel, and a cover plate laminated on the bending structure, and the touch panel is arranged on the On the display screen, the cover is provided on the touch panel, the touch panel is used to receive user touch information, and the touch panel includes a first touch portion and a second touch portion, The first touch portion is provided corresponding to the bending portion, the second touch portion is provided corresponding to the non-bending portion, and the elastic modulus of the first touch portion is smaller than that of the second touch portion The modulus of elasticity.
The display device according to claim 1, wherein the flexible display module comprises a display screen, a touch panel, and a cover plate laminated on the bending structure, and the touch panel is arranged on the On the display screen, the cover plate is provided on the touch panel, the cover plate includes a first protection portion and a second protection portion, the first protection portion is provided corresponding to the bending portion, and the second Two protection parts are provided corresponding to the non-bending part, and the elastic modulus of the first protection part is smaller than that of the second protection part.
A preparation method of a display device, characterized in that the preparation method comprises:

Provide bending structure; and

A flexible display module is formed on the bending structure, the flexible display module includes a bending portion and a non-bending portion, and the elastic modulus of the bending portion is smaller than the elastic modulus of the non-bending portion.
The manufacturing method of claim 15, wherein the flexible display module comprises a substrate, a support layer, a display screen, an encapsulation layer, a polarizer, a touch panel, and a cover formed on the bending structure. , And an optical adhesive layer, the optical adhesive layer includes a first part and a second part, the first part is set corresponding to the bending part, and the second part is set corresponding to the non-bending part, using a curing method Making the second part form a second connecting part, the first part forming a first connecting part, and making the elastic modulus of the first connecting part smaller than the elastic modulus of the second connecting part; the optical The adhesive layer includes any one or more of a first optical adhesive layer, a second optical adhesive layer, and a third optical adhesive layer, and the first optical adhesive layer is disposed between the substrate and the support layer, The second optical adhesive layer is provided between the polarizer and the touch panel, and the third optical adhesive layer is provided between the touch panel and the cover plate.
The preparation method according to claim 16, wherein the curing method comprises any one or more of ultraviolet curing method, thermal curing method, and electron beam curing method.
The preparation method according to claim 17, wherein a transition portion is further provided between the bending portion and the non-bending portion, and the elastic modulus of the transition portion is greater than that of the bending portion. The modulus is smaller than the elastic modulus of the non-bending part; a third part is also provided between the first part and the second part. The method makes the third part form a buffer part, and makes the elastic modulus of the buffer part greater than the elastic modulus of the first connecting part and smaller than the elastic modulus of the second connecting part.
The preparation method according to claim 18, characterized in that by controlling any one or more of ultraviolet light irradiation time, heating temperature, heating time, and electron beam irradiation time, so that the buffer The elastic modulus of the part is greater than the elastic modulus of the first connecting part and is smaller than the elastic modulus of the second connecting part.
An electronic device, characterized in that, the electronic device comprises a casing, and a main board and a display device arranged in the casing, the main board is electrically connected to the display device, and the display device comprises claims 1- 14. The display device according to any one of items.