Display module and electronic device

Abstract

Embodiments of the present application provide a display module and an electronic device comprising the display module. The technical field of display technology is involved. The display module can improve the flat rigidity and the bending performance. The display module comprises a display screen and a cover plate arranged on one side of the display surface of the display screen. The display screen comprises at least two bending parts and three non-bending parts, i.e., the display module is a multi-fold display module, and the cover plate is designed as a non-uniform thickness structure. By designing the cover plate as a non-uniform thickness structure, the non-bending parts can have higher rigidity, and the bending parts have better bendable performance.

Description

[0001] This application is a divisional application, the original application number is 202310808453.6, the original application date is June 30, 2023, and the entire contents of the original application are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, in particular to a display module and a foldable electronic device comprising the display module. BACKGROUND

[0003] With the development of human-computer interaction technology, display has become an important element of human-computer interaction, and therefore foldable screen electronic devices have emerged, such as foldable mobile phones.

[0004] How to improve the use performance of foldable electronic devices is the main problem currently faced. For example, the bending area has good bendable performance when bending, the non-bending area has high flat stiffness when unfolding, and it is necessary to have good impact resistance and extrusion resistance. SUMMARY

[0005] The present application provides a display module and an electronic device, such as a foldable electronic device, comprising the display module. The main purpose is to improve the performance of the electronic device, such as to improve the flat stiffness of the non-bending area and to improve the bending performance of the bending area.

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

[0007] In a first aspect, the present application provides a display module, which belongs to a flexible display structure and can be applied to a flexible display device, and has bendable performance.

[0008] The display module includes a display screen and a cover plate, and the cover plate is arranged on one side of the display surface of the display screen; the display screen includes a first non-bending portion, a second non-bending portion, a third non-bending portion, a first bending portion and a second bending portion, the first bending portion connects the first non-bending portion and the second non-bending portion, the second bending portion connects the second non-bending portion and the third non-bending portion, the cover plate includes a first non-bending area, a second non-bending area, a third non-bending area, a first bending area and a second bending area, the first bending area connects the first non-bending area and the second non-bending area, and the second bending area connects the second non-bending area and the third non-bending area; the first non-bending area corresponds to the first non-bending portion, the first bending area corresponds to the first bending portion, the second non-bending area corresponds to the second non-bending portion, the second bending area corresponds to the second bending portion, and the third non-bending area corresponds to the third non-bending portion; the first bending area, the first bending portion, the second bending area and the second bending portion can be bent along the bending line to switch between an unfolded state and a closed state, and the display module belongs to a display module structure that can be folded at least three times; wherein the thickness of the first non-bending area of the cover plate is not equal to the thickness of the second non-bending area.

[0009] In the display module provided in the present application, the thickness of the first non-bending area of the cover plate is not equal to the thickness of the second non-bending area, that is, the cover plate is designed as a non-uniform thickness structure. For example, in some scenarios, in order to improve the rigidity of the first non-bending area exposed (which can present a picture to the user) in the closed state, the thickness of the first non-bending area is increased, and through the non-uniform thickness design of the cover plate, the bendability of the first bending area will not be affected by the increase in the thickness of the first non-bending area.

[0010] The display module provided in the present application not only has high rigidity in the non-bending area, but also has excellent bendability in the bending area.

[0011] In an implementable manner, the thickness of the first non-bending area is greater than the thickness of the second non-bending area.

[0012] In some use scenarios, the first non-bending area is exposed in the closed state, and by making the thickness of the first non-bending area greater than the thickness of the second non-bending area, the rigidity of the first non-bending area is improved.

[0013] In an implementable manner, the cover plate includes a first substrate and a first buffer layer, and the first buffer layer is closer to the display screen than the first substrate; the thickness of the first substrate in the first non-bending area is greater than the thickness of the first substrate in the second non-bending area, and / or the thickness of the first buffer layer in the first non-bending area is greater than the thickness of the first buffer layer in the second non-bending area.

[0014] In some implementations, at least one of the substrate in the cover plate or the buffer layer can be designed as a non-uniform thickness structure.

[0015] In an implementable manner, the thickness of the first buffer layer at the first bending area gradually decreases from the first non-bending area to the second non-bending area.

[0016] In an implementable manner, the thickness of the first buffer layer at the second non-bending area gradually decreases from the first bending area to the second bending area.

[0017] The thickness of the first buffer layer at the first bending area and the second non-bending area gradually decreases, and the thick-thin transition area is designed to be wider, which has a better masking effect on the visual step difference of the non-uniform thickness.

[0018] In an implementable manner, the first buffer layer is arranged on the surface of the first substrate facing the display screen.

[0019] Compared with some examples in which the buffer layer is attached to the substrate by using an adhesive layer, the implementation structure of the present application can thin the thickness of the display module.

[0020] In an implementable manner, the material of the first buffer layer includes at least one of thermoplastic polyurethane elastomer, silicone gel, and shear thickening material.

[0021] In an implementable manner, the display module further includes a second substrate, the second substrate is arranged between the first buffer layer and the display screen, and the first buffer layer is arranged on the surface of the second substrate away from the display screen.

[0022] In this example, the first substrate can be the substrate in the protective layer, and the second substrate can be the substrate in the display cover plate. If the protective layer and the display cover plate are arranged, the first buffer layer can be directly arranged on the surface of the second substrate of the display cover plate. The first buffer layer not only has a buffering effect, but also has an adhesive effect. Compared with the use of an adhesive layer to attach the first buffer layer to the second substrate, the thickness of the display module can be compressed.

[0023] In an implementable manner, the material of the first buffer layer includes optical clear adhesive (OCA) and the like.

[0024] In an implementable manner, the cover plate further includes a second buffer layer, the second buffer layer includes a first part and a second part; the first part of the second buffer layer is located at the first non-bending area, the second part of the second buffer layer is located at the first bending area, and the elastic modulus of the first part of the second buffer layer is greater than the elastic modulus of the second part of the second buffer layer.

[0025] In some structures, the display module can further include a second buffer layer. In order to further improve the bendable performance of the bending area, the second buffer layer can be designed to have a structure with unequal elastic modulus. The second buffer layer in this example can be a buffer layer of a protective layer arranged on one side of the display screen display surface, or can be a buffer layer in the display cover plate.

[0026] In an implementable manner, the second buffer layer is closer to the display screen than the first buffer layer; or, the first buffer layer is closer to the display screen than the second buffer layer.

[0027] In an implementable manner, the first part of the second buffer layer and the second part of the second buffer layer are an integral structure; or, the first part of the second buffer layer and the second part of the second buffer layer are connected through an adhesive layer.

[0028] For example, when the first part and the second part adopt an integral structure, the buffer layer material can be first coated on the substrate, and then cured by UV (ultraviolet light) in different regions to obtain buffer materials with different hardness; or, the buffer layer material can be heated in different regions to obtain parts with different elastic modulus.

[0029] In an implementable manner, the second buffer layer further includes a third part, the third part of the second buffer layer is located in the second non-bending area; the elastic modulus of the third part of the second buffer layer is smaller than the elastic modulus of the first part of the second buffer layer, and is greater than the elastic modulus of the second part of the second buffer layer.

[0030] In an implementable manner, the thickness of the first bending area gradually decreases in the direction from the first non-bending area to the second non-bending area.

[0031] In the cover plate, the first non-bending area is a thick area, the second non-bending area is a thin area, and the first bending area connected between the first non-bending area and the second non-bending area is a thick-thin transition area.

[0032] In an implementable manner, the thickness of the second non-bending area gradually decreases in the direction from the first bending area to the second bending area.

[0033] The thickness of the first bending area and the second non-bending area of the cover plate gradually decreases, and the thick-thin transition area is designed to be wider, which has a better masking effect on the visual step difference of unequal thickness.

[0034] In an implementable manner, the thickness of the third non-bending area is smaller than the thickness of the first non-bending area.

[0035] In some scenarios, for a multi-fold display setup, in the closed state, the first non-fold region is visible to the user, and the second and third non-fold regions are not visible to the user. In this implementation structure, the cover plate includes a thick region for the first non-fold region, and thin regions for the second and third non-fold regions, to meet the rigidity requirements of the electronic device in this scenario, and without excessively increasing the thickness dimension of the display module in the closed state.

[0036] In an implementable manner, the thicknesses of the first fold region, the second non-fold region, the second fold region, and the third non-fold region gradually decrease from the first non-fold region to the third non-fold region.

[0037] The visual step difference of the unequal thicknesses has a further masking effect.

[0038] In an implementable manner, the display module further includes a support plate and a buffer pad, the support plate is arranged on the side of the display screen away from the display surface, and the buffer pad is arranged on the side of the support plate away from the display screen, and the buffer pad is located at a position corresponding to the first fold region.

[0039] In an implementable manner, the display module further includes a support plate and a buffer pad, the support plate is arranged on the side of the display screen away from the display surface, and the buffer pad is arranged on the side of the support plate away from the display screen, and the buffer pad is located at a position corresponding to the first fold region.

[0040] In some examples, in order to guarantee the folding performance of the folding region, the impact resistance and extrusion resistance of the folding part are weakened. In the examples of the present application, by arranging a buffer pad at the part of the support plate corresponding to the first fold region, the buffer characteristics of the buffer pad can be utilized to improve the impact resistance and extrusion resistance of this region. For example, the buffer pad can be arranged on the side of the support plate away from the display screen, or the buffer pad can be inlaid in the support plate.

[0041] In an implementable manner, when the first fold region is in the closed state, the display surface of the display screen is away from the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the first fold region forms an outer-folded folding structure.

[0042] When the electronic device is in the closed state, the picture of the first non-fold region is visible to the user. The examples of the present application can also be applied to the case where the picture of the first non-fold region is not visible to the user.

[0043] In an implementable manner, when the second bending area is in the closed state, the display surface of the display screen is close to the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the second bending area forms an inwardly folded bending structure; and when the first bending area is in the closed state, the display surface of the display screen is away from the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the first bending area forms an outwardly folded bending structure.

[0044] In some embodiments of the present application, when the electronic device is in the closed state, an outwardly folded area and an inwardly folded area are formed.

[0045] In a second aspect, the present application provides a display module. The display module comprises a display screen and a cover plate, the cover plate being arranged on the display surface side of the display screen; the display screen comprises a first non-bending part, a second non-bending part, a third non-bending part, a first bending part and a second bending part, the first bending part connecting the first non-bending part and the second non-bending part, the second bending part connecting the second non-bending part and the third non-bending part, the cover plate comprising a first non-bending area, a second non-bending area, a third non-bending area, a first bending area and a second bending area, the first bending area connecting the first non-bending area and the second non-bending area, the second bending area connecting the second non-bending area and the third non-bending area; the first non-bending area corresponds to the first non-bending part, the first bending area corresponds to the first bending part, the second non-bending area corresponds to the second non-bending part, the second bending area corresponds to the second bending part, and the third non-bending area corresponds to the third non-bending part; the first bending area, the first bending part, the second bending area and the second bending part can all be bent along the bending line to switch between the unfolded state and the closed state, and the present application belongs to a display screen that can be folded at least three times; the elastic modulus of the first non-bending area is not equal to the elastic modulus of the first bending area.

[0046] In the display module provided by the present application, the cover plate arranged on the display surface side of the display screen is designed as a non-equal modulus structure. For example, the elastic modulus of the first non-bending area can be greater than the elastic modulus of the first bending area. On the basis of ensuring that the first non-bending area has high rigidity, the first bending area can also have good bendability.

[0047] In an implementable manner, the elastic modulus of the first non-bending area is greater than the elastic modulus of the first bending area.

[0048] In some use scenarios, in the closed state, the first non-bending area is exposed, the elastic modulus of the first non-bending area is greater than the elastic modulus of the first bending area, the rigidity of the first non-bending area is improved, and the bendability of the first bending area is ensured.

[0049] In an implementable manner, the cover plate comprises a substrate and a buffer layer, the substrate and the buffer layer are arranged on a display surface side of the display screen, and the buffer layer is closer to the display screen than the substrate; the buffer layer comprises a first part and a second part; the first part of the buffer layer is located in the first non-bending area, and the second part of the buffer layer is located in the first bending area; the elastic modulus of the first part of the buffer layer is greater than the elastic modulus of the second part of the buffer layer.

[0050] In an implementable manner, the first part of the buffer layer and the second part of the buffer layer are in an integral forming structure; or, the first part of the buffer layer and the second part of the buffer layer are connected through an adhesive layer.

[0051] In some embodiments of the present application, two implementation manners of the cover plate with different elastic moduli are given, and other manners can also be adopted.

[0052] In an implementable manner, the buffer layer further comprises a third part, the third part of the buffer layer is located in the second non-bending area; the elastic modulus of the third part of the buffer layer is less than the elastic modulus of the first part of the buffer layer and greater than the elastic modulus of the second part of the buffer layer.

[0053] In an implementable manner, the display module further comprises a support plate and a buffer pad, the support plate is arranged on a side of the display screen away from the display surface; the buffer pad is arranged on a side of the support plate away from the display screen, and the buffer pad is located at a position corresponding to the first bending area.

[0054] In an implementable manner, the display module further comprises a support plate and a buffer pad, the support plate is arranged on a side of the display screen away from the display surface; the buffer pad is embedded in a position of the support plate corresponding to the first bending area.

[0055] In some examples, in order to guarantee the bending performance of the bending area, the impact resistance and extrusion resistance of the bending part are weakened. In the examples of the present application, by arranging the buffer pad in the part of the support plate corresponding to the first bending area, the buffer characteristics of the buffer pad can be utilized to improve the impact resistance and extrusion resistance of the area. For example, the buffer pad can be arranged on a side of the support plate away from the display screen, or the buffer pad can be embedded in the support plate.

[0056] In an implementable manner, when the first bending area is in a closed state, the display surface of the display screen is away from the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the first bending area forms an outwardly folded bending structure.

[0057] That is, when the electronic device is in a closed state, the picture of the first non-bending area is visible to the user. The present application can also be applied to the case where the picture of the first non-bending area is not visible to the user.

[0058] In an implementable manner, when the second bending area is in the closed state, the display surface of the display screen is close to the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the second bending area forms an inward folding bending structure; and when the first bending area is in the closed state, the display surface of the display screen is away from the center of the arc structure formed by the display module relative to the back surface of the display screen, so that the first bending area forms an outward folding bending structure.

[0059] In some embodiments of the present application, when the electronic device in the closed state forms an outward folding area and an inward folding area.

[0060] In a third aspect, the present application also provides an electronic device, comprising a shell and the display module in any of the above implementation manners, and the display module is arranged on the shell.

[0061] The electronic device provided by the embodiments of the present application comprises the display module described above, so that the electronic device provided by the embodiments of the present application and the display module of the above technical solution can solve the same technical problems and achieve the same expected effect. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 It is a structural diagram of a folded electronic device;

[0063] Figure 2 It is a structural diagram of a multi-folded display module in an unfolded state;

[0064] Figure 3 It is a structural diagram of a multi-folded display module in an unfolded state provided by the embodiments of the present application;

[0065] Figure 4 It is a structural diagram of a multi-folded display module in an unfolded state provided by the embodiments of the present application;

[0066] Figure 5 It is a structural diagram of a multi-folded display module in an unfolded state provided by the embodiments of the present application;

[0067] Figure 6 It is a structural diagram of a multi-folded display module in a closed state provided by the embodiments of the present application;

[0068] Figure 7 It is a structural diagram of a multi-folded display module in an unfolded state provided by the embodiments of the present application;

[0069] Figure 8 It is a structural diagram of a multi-folded display module in an unfolded state provided by the embodiments of the present application;

[0070] Figure 9A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0071] Figure 10 A structure diagram of a multi-fold display module is provided for an embodiment of the present application.

[0072] Figure 11 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0073] Figure 12 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0074] Figure 13 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0075] Figure 14 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0076] Figure 15 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0077] Figure 16 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0078] Figure 17 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0079] Figure 18 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0080] Figure 19 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0081] Figure 20 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0082] Figure 21 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0083] Figure 22 A structure diagram of a multi-fold display module in a flattened state is provided for an embodiment of the present application.

[0084] Figure 23A structure diagram of a multi-fold display module in a flat state is provided for an embodiment of the present application.

[0085] Figure 24 A structure diagram of a multi-fold display module in a flat state is provided for an embodiment of the present application.

[0086] Figure 25 A structure diagram of a multi-fold display module in a flat state is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0087] The specific embodiments related to the present application will be described in detail below with reference to the accompanying drawings.

[0088] An electronic device with a folding screen is provided in an embodiment of the present application, which can include a mobile phone, a pad, a smart wearable product (for example, a smart watch, a smart bracelet), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and the like, which are electronic products with display functions. The specific form of the electronic device with display functions is not specially limited in the embodiment of the present application.

[0089] In order to facilitate the description, the structure of the electronic device is described below by taking a mobile phone as an example.

[0090] Figure 1 A structure diagram of a folding screen mobile phone is shown, and the example folding screen mobile phone is a three-screen folding mobile phone. The three-fold folding screen mobile phone can include a first housing 100a, a second housing 100b, and a third housing 100c, and a display module 11. The display module 11 can be continuously covered on the first housing 100a, the second housing 100b, and the third housing 100c. The folding screen mobile phone can further include a first hinge mechanism and a second hinge mechanism.

[0091] The first housing 100a and the second housing 100b are arranged on both sides of the first hinge mechanism and are connected with the first hinge mechanism, and the first hinge mechanism can move to fold or unfold the first housing 100a and the second housing 100b, so as to realize the flatness and closure of the display module 11 arranged on the first housing 100a and the second housing 100b.

[0092] The second housing 100b and the third housing 100c are arranged on both sides of the second hinge mechanism and are connected with the second hinge mechanism, and the second hinge mechanism can move to fold or unfold the second housing 100b and the third housing 100c, so as to realize the flatness and closure of the display module 11 arranged on the second housing 100b and the third housing 100c.

[0093] The foldable electronic device can be unfolded to a flat state, folded to a closed state, and also can be in an intermediate state between the flat state and the closed state. The foldable electronic device has at least two states, i.e., the flat state and the closed state. In some cases, a third state, i.e., an intermediate state between the flat state and the closed state, can be further included. The intermediate state is not only a unique state, but also can be any one or more states between the flat state and the closed state.

[0094] Figure 1 An example is a three-screen foldable electronic device. The electronic device involved in the embodiments of the present application can also be a device with more screens, such as a four-screen foldable, a five-screen foldable, etc.

[0095] In the foldable electronic device, multi-fold is increasingly favored by users, such as, Figure 1 The three-fold electronic device is shown. When the electronic device is in a folded (or closed) state, as shown in FIG. 1B, the non-bending area B1 of the display module is exposed. In order to improve the ability of the exposed non-bending area to resist external force damage, the thickness of the non-bending area B1 can be increased to improve the rigidity and strength. Figure 1

[0096] As shown in FIG. 2A, the display module 11 can include a bracket 111, a panel 112, and a cover plate 110. Figure 2

[0097] The bracket 111 and the cover plate 110 are arranged on opposite sides of the panel 112. The bracket 111 is arranged on the back side of the panel 112 as a support structure for supporting the panel 112. The cover plate 110 is arranged on the display side of the panel 112 for protecting the panel 112 and reducing the probability of damage to the panel 112.

[0098] The display side of the panel 112 is the side of the panel 112 for showing pictures to the user. The back side of the panel 112 refers to the side opposite to the display side of the panel 112. The back side of the panel 112 can also be the side away from the display side.

[0099] As shown in FIG. 3A, the display module 11 can include a bracket 111, a panel 112, and a cover plate 110. Figure 2 ​​As shown, each film layer structure in the display module 11 is connected together in a sheet-shaped integrated structure. For example, the protective layer 114 in the cover plate 110 is a continuous integrated structure in each non-bending area and each bending area, and the thickness of each area is the same. The display cover plate 113 in the cover plate 110 is similar, and the thickness of each area is the same. When it is necessary to increase the thickness size of the non-bending area B1 in the display module, the thickness of other areas (such as the bending area A1, the non-bending area B2, the bending area A2, and the non-bending area B3) will also be increased correspondingly, resulting in a large thickness of the entire machine in the closed state.

[0100] Even if the rigidity of the non-bending area B1 is improved by increasing the thickness of the display module 11, the thicker screen body will affect the bending performance of the bending area A1 and the bending area A2, improve the rebound force of the bending area A1 and the bending area A2, and reduce the user experience.

[0101] The present application provides some display module embodiments, which can not only improve the rigidity of the exposed non-bending area, but also will not weaken the bendable performance of the bending area.

[0102] Figure 3 is a structural diagram of a display module provided by an embodiment of the present application. The display module 11 includes a bracket 111, a panel 112, and a cover plate 110. The bracket 111 and the cover plate 110 are arranged on opposite sides of the panel 112. The bracket 111 is located on the back side of the panel 112 and serves as a support structure for supporting the panel 112. The cover plate 110 is located on the display side of the panel 112 and serves to protect the panel 112.

[0103] The panel 112 in the display module 11 includes a first non-bending part, a second non-bending part, a third non-bending part, a first bending part, and a second bending part. The first bending part connects the first non-bending part and the second non-bending part, and the second bending part connects the second non-bending part and the third non-bending part.

[0104] The cover plate 110 in the display module 11 includes a first non-bending area, a second non-bending area, and a third non-bending area, a first bending area connecting the first non-bending area and the second non-bending area, and a second bending area connecting the second non-bending area and the third non-bending area.

[0105] The first non-bending portion of the display screen 112 corresponds to the first non-bending area of the cover plate 110, the first bending portion of the display screen 112 corresponds to the first bending area of the cover plate 110, the second non-bending portion of the display screen 112 corresponds to the second non-bending area of the cover plate 110, the second bending portion of the display screen 112 corresponds to the second bending area of the cover plate 110, and the third non-bending portion of the display screen 112 corresponds to the third non-bending area of the cover plate 110.

[0106] The first bending area, the first bending portion, the second bending area, and the second bending portion can be bent along the bending line to switch between the unfolded state and the closed state.

[0107] Figure 3 In some other examples, more bending areas and non-bending areas can be added to the structures shown in FIGS. 1 to 4 to form electronic devices with four screens or five screens. Figure 3

[0108] As shown in FIG. 5, the thickness of the first non-bending area of the cover plate 110 is d1, and the thickness of the second non-bending area is d2. The thickness d1 is not equal to the thickness d2, for example, the thickness d1 can be greater than the thickness d2. Figure 3

[0109] Figure 4 FIG. 6 is another structural diagram of a display module according to an embodiment of the present application. Similar to FIG. 5, the thickness of the first non-bending area of the cover plate 110 is d1, and the thickness of the second non-bending area is d2. The thickness d1 is not equal to the thickness d2, and the thickness d1 is greater than the thickness d2. Figure 3

[0110] FIG. 7 is still another structural diagram of a display module according to an embodiment of the present application. Similar to FIG. 5, the thickness of the first non-bending area of the cover plate 110 is d1, and the thickness of the second non-bending area is d2. The thickness d1 is not equal to the thickness d2, and the thickness d1 is greater than the thickness d2. Figure 5 Figure 3 Figure 4

[0111] In some examples, the thickness dimensions referred to in the present application refer to the dimensions along the stacking direction (P direction) of the plurality of film layers. Figure 3

[0112] Figure 3 Figure 4 Figure 5 In the three different examples of the display module 11 shown in FIGS. 8 to 10, the thickness d4 of the first bending area of the cover plate 110 is not constant, but gradually decreases along the direction away from the first non-bending area, for example, from the first non-bending area to the second non-bending area, so that the thickness d2 is less than the thickness d1. ​​​​​​​​

[0113] like Figure 3 to Figure 5 In the cover plate 110, the first non-bending area is a thick area, the second non-bending area is a thin area, and the first bending area connecting the first non-bending area and the second non-bending area is a thin-thickness transition area.

[0114] Figure 3 , Figure 4 and Figure 5 The differences between the three different examples of module 11 shown include:

[0115] Figure 3 In the cover plate 110, the thickness of the second bending region is d5, the thickness of the third non-bending region is d3, and the thicknesses d2, d5, and d3 are equal. The first non-bending region is a thick region, the first bending region is a thickness transition region, and the second non-bending region, the second bending region, and the third non-bending region are thin regions of equal thickness.

[0116] and Figure 3 compared to, Figure 4 In the example shown, not only is the thickness d4 of the first bent region not a constant value, but the thickness d2 of the second non-bent region is also not a constant value. In some examples, the thickness of the first bent region and the second non-bent region of the cover plate 110 gradually decreases along the direction away from the first non-bent region, which can mask the visual effect of uneven thickness of the entire display module.

[0117] exist Figure 4 In the case of the cover plate 110, the thickness of the second bent area and the third non-bent area are equal. That is, the thickness d5 is equal to the thickness d3.

[0118] exist Figure 4 In the diagram, the first non-bending region is a thick region, the first bending region and the second non-bending region are thick-to-thin transition zones, and the second bending region and the third non-bending region are thin regions of equal thickness.

[0119] and Figure 3 and Figure 4 In comparison, Figure 5 In this design, not only are the thicknesses of the first bent area and the second non-bent area of ​​the cover plate 110 not constant, but the thicknesses of the second bent area and the third non-bent area of ​​the cover plate 110 are also not constant. Along the direction away from the first non-bent area, the thicknesses of the first bent area, the second non-bent area, the second bent area, and the third non-bent area of ​​the cover plate 110 gradually decrease. This further masks the visual effect of uneven thickness across the entire display module.

[0120] Figure 6 It is Figure 3The structure diagram of the display module 11 after folding is given in the embodiments of the present application. The thickness of the first non-folding area exposed (visible to the user when folding) is greater than the thickness of the second non-folding area not exposed (invisible to the user when folding). The first folding area connected with the first non-folding area exposed is designed as a non-uniform thickness structure. Even if the thickness size of the first non-folding area is increased in order to improve the rigidity and strength of the first non-folding area, the bendable performance of the folding area will not be affected. The thickness size of other areas will not be increased, and the thickness of the closed state will not be significantly improved when the whole machine is in the folded state.

[0121] In some examples, Figure 3 to Figure 5 The folding area of the example can form an inner folding area, or can form an outer folding area. For example, Figure 6 In the closed state shown, the first folding area forms an outer folding area, and the second folding area forms an inner folding area. The first non-folding area is exposed and visible to the user, and the second non-folding area and the third non-folding area are opposite and invisible to the user.

[0122] As Figure 6 , the outer folding area is the display module 11 in the folding process and in the closed state, the display screen is still visible to the user, and the user can also perform some operations on the display module 11 in the closed state. It can also be that the display side of the display module 11 is visible to the user.

[0123] As Figure 6 , the inner folding area refers to the display screen in the process of the electronic device being converted from the flat state to the closed state and in the closed state of the electronic device, the display screen is on the inner side of the electronic device, that is, in the folding process, the display screen gradually becomes invisible to the user, until the closed state, the display module 11 is hidden between the two housings and completely hidden. The display side of the display module 11 is hidden and invisible to the user.

[0124] As Figure 7 , Figure 7 is a structure diagram of a display module given in the embodiments of the present application, wherein the cover plate 110 can include a display cover plate 113 and a protective layer 114. The display cover plate 113 is arranged on the display side of the display screen 112, and the protective layer 114 is arranged on the side of the display cover plate 113 away from the display screen 112. The display cover plate 113 and the protective layer 114 are both light-transmitting. The light transmitted by the display side of the display screen 112 can be transmitted through the display cover plate 113 and the protective layer 114 and received by the user.

[0125] In some use scenarios, when the protective layer 114 is damaged or falls off, for example, the display cover plate 113 can still protect the display screen 112.

[0126] Of course, in some other examples, the cover plate 110 can also include other film layer structures, or the cover plate 110 includes one of the display cover plate 113 and the protective layer 114.

[0127] In the embodiments of the present application, the display panel 112 can be a flexible display panel, and the cover plate 110 can be a flexible structure to meet the folding requirement.

[0128] The display panel 112 can be used to display information and provide an interactive interface for the user. In the embodiments of the present application, the display panel 112 can be, but is not limited to, an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini organic light-emitting diode display panel, a micro organic light-emitting diode display panel, a micro organic light-emitting diode display panel, a quantum dot light emitting diode (QLED) display panel, etc. As shown in the example, the display cover plate 113 located in the first non-bending area has a thickness greater than that of the second non-bending area, and the thickness of the display cover plate 113 located in the first bending area gradually decreases along the direction away from the first non-bending area. Figure 7 As shown in the example, the display cover plate 113 located in the first non-bending area has a thickness greater than that of the second non-bending area, and the thickness of the display cover plate 113 located in the first bending area gradually decreases along the direction away from the first non-bending area.

[0129] In the example, the thickness of the protective layer 114 in each bending area and each non-bending area is equal. Figure 7

[0130] Figure 8 is another structure diagram of a display module given by the embodiments of the present application. In this structure, the thickness of the protective layer 114 located in the first non-bending area is greater than that of the second non-bending area, and the thickness of the protective layer 114 located in the first bending area gradually decreases along the direction away from the first non-bending area.

[0131] In the example, the thickness of the display cover plate 113 in each bending area and each non-bending area is equal. Figure 8

[0132] Figure 9 is another structure diagram of a display module given by the embodiments of the present application. And Figure 8 ​​In comparison, in this structure, the thickness of the first bending region and the thickness of the second non-bending region in the protective layer 114 gradually decrease in the direction away from the first non-bending region, which widens the width of the thickness transition zone of the protective layer 114.

[0133] Figure 10 is another structure diagram of a display module given by an embodiment of the present application. And Figure 8 And Figure 9 In comparison, in this example, the thickness of the first bending region, the thickness of the second non-bending region, the thickness of the second bending region and the thickness of the third non-bending region in the protective layer 114 gradually decrease in the direction away from the first non-bending region, which further widens the width of the thickness transition zone of the protective layer 114.

[0134] Figure 8 to Figure 10 In the above example, the protective layer 114 is designed as a non-uniform thickness structure. In other examples, the thickness transition zone with uneven thickness can be provided in other film layer structures, for example, in the display cover plate 113, the structure shown in Figure 8 to Figure 10 may also be adopted.

[0135] In some examples provided by the present application, as shown in Figure 11 , the display cover plate 113 or the protective layer 114 can include a substrate 11D and a buffer layer 11B.

[0136] The substrate 11D and the buffer layer 11B can be connected through an adhesive layer 11C, and the adhesive layer 11A connects the stacked film layer structure and other layer structures. In some examples, when the protective layer 114 is as shown in Figure 11 , the structure including the substrate 11D, the adhesive layer 11C and the buffer layer 11B can be connected with the display cover plate 113 by using the adhesive layer 11A.

[0137] In some optional materials, the substrate 11D can be selected from at least one of polyethylene terephthalate (PET), polyimide (PI) and transparent polyimide (CPI).

[0138] In some examples, the buffer layer 11B is an elastomer film material, and the elastic modulus of the buffer layer 11B is less than the elastic modulus of the substrate 11D. The buffer layer 11B can be selected from at least one of thermoplastic polyurethane elastomer TPU, thermoplastic polyamide elastomer TPAE and other elastomer film materials.

[0139] The adhesive layer 11A and the adhesive layer 11C can be selected from at least one of an optically clear adhesive (OCA), an optically clear resin (OCR), an acrylic resin, an epoxy resin, and the like.

[0140] Referring to Figure 11 In this embodiment, the buffer layer 11B located in the first bending area is designed as a non-uniform thickness structure. Along the direction away from the first non-bending area, the thickness of the buffer layer 11B located in the first bending area gradually decreases, so that the protective layer 114 or the display cover plate 113 located in the first bending area presents a thick-thin transition area.

[0141] In Figure 11 , the thickness of the substrate 11D can be 25 μm to 75 μm. The thickness of the adhesive layer 11A and the adhesive layer 11C can be 25 μm to 50 μm.

[0142] The thickness of the buffer layer 11B located in the first non-bending area is 75 μm to 150 μm, and the thickness of the buffer layer 11B located in the second non-bending area, the second bending area and the third non-bending area is 25 μm to 75 μm.

[0143] Figure 12 is another structure diagram of the display cover plate 113 or the protective layer 114 given by the embodiments of the present application. In this example, the substrate 11D located in the first bending area is designed as a non-uniform thickness structure. Along the direction away from the first non-bending area, the thickness of the substrate 11D located in the first bending area gradually decreases, so that the protective layer 114 or the display cover plate 113 located in the first bending area presents a thick-thin transition area.

[0144] Figure 13 is still another structure diagram of the display cover plate 113 or the protective layer 114 given by the embodiments of the present application. Compared with Figure 12 , not only the buffer layer 11B located in the first bending area is designed as a non-uniform thickness structure, but also the buffer layer 11B located in the second non-bending area is designed as a non-uniform thickness structure. In order to weaken the visual effect of the uneven thickness of the entire display module.

[0145] Figure 14 is still another structure diagram of the display cover plate 113 or the protective layer 114 given by the embodiments of the present application. In some examples, the thickness of the buffer layer 11B is relatively large, for example, the thickness reaches 100 μm. Because the buffer layer is thick, the strain generated on the upper and lower surfaces of the film material of the display module when bending is easy to enter the plastic deformation stage.

[0146] In order to weaken the strain generated on the upper and lower surfaces of the display module when bending into the plastic deformation stage and improve the bendable performance, in some examples, as shown inFigure 14 The buffer layer 11B includes a first buffer layer 11B1 and a second buffer layer 11B2. The first buffer layer 11B1 is of an equal thickness structure, and the second buffer layer 11B2 located in the first bending area is of a non-equal thickness structure. The second buffer layer 11B2 of non-equal thickness is farther away from the display screen than the first buffer layer 11B1 of equal thickness, that is, closer to the interface visible to the user. In some other examples, the first buffer layer 11B1 of equal thickness can be closer to the interface visible to the user than the second buffer layer 11B2 of non-equal thickness.

[0147] Referring to Figure 14 The first buffer layer 11B1 is connected to the second buffer layer 11B2 through the adhesive layer 11E, and the second buffer layer 11B2 is connected to the substrate 11D through the adhesive layer 11C.

[0148] Figure 15 FIG. 13 is a structural diagram of a display cover plate 113 or a protective layer 114 according to another example of the present application. In some optional processes, the buffer layer 11B can be attached to the substrate 11D by coating process. The adhesive layer for connecting the buffer layer 11B and the substrate 11D can be removed to reduce the thickness of the display module, without weakening the rigidity of the non-bending area and the bendable performance of the bending area.

[0149] Figure 15 The material of the buffer layer 11B in the example can be selected from at least one of thermoplastic polyurethane elastomer, silicone gel, and shear thickening material.

[0150] Referring to Figure 15 In this example, the buffer layer 11B located in the first bending area is designed to be of a non-equal thickness structure, and the thickness of each area of the substrate 11D is equal.

[0151] Figure 16 FIG. 14 is a structural diagram of a display cover plate 113 or a protective layer 114 according to another example of the present application. In some optional processes, the buffer layer 11B can also be attached to the substrate 11D by coating process. The buffer layer 11B in this example can be selected to have adhesion, such as optical clear adhesive (OCA) and the like. The buffer layer 11B is not only an elastomer film material, but also has a connecting effect, so that the adhesive layer 11A can not be needed. The thickness of the display module can be further compressed.

[0152] Referring to Figure 16 In this example, the buffer layer 11B located in the first bending area is designed to be of a non-equal thickness structure, and the thickness of each area of the substrate 11D is equal.

[0153] To improve the rigidity of the exposed non-bending area, the bending performance of the bending area is not weakened. Embodiments of the present application also give some structures that can be implemented, as follows:

[0154] Figure 17 is a structural diagram of a display module given by an embodiment of the present application. The elastic modulus of the cover plate 110 of the display module 11 located in the first non-bending area is greater than the elastic modulus of the first bending area. The cover plate 110 includes a hard area with a larger elastic modulus and a soft area with a smaller elastic modulus.

[0155] In some examples, when the cover plate 110 includes a display cover plate or a protective layer, the hard area and the soft area can be arranged in at least one of the display cover plate and the protective layer. For example, Figure 18 is a structural diagram of a display cover plate 113 or a protective layer 114 given by an embodiment of the present application. It includes a substrate 11D and a buffer layer 11B, and the substrate 11D and the buffer layer 11B are connected through an adhesive layer 11C.

[0156] As Figure 18 , the buffer layer 11B includes a hard area 11B01 (also called a first part) and a soft area 11B02 (also called a second part), and the elastic modulus of the hard area 11B01 is greater than the elastic modulus of the soft area 11B02. The hard area 11B01 is in the first non-bending area, and the soft area 11B02 can be located in at least one of the first bending area and the second bending area.

[0157] In Figure 18 , the hard area 11B01 and the soft area 11B02 are an integral structure connected together. In some optional process procedures, the buffer layer material can be coated on the substrate first, and then cured by UV (ultraviolet light) in different regions to obtain buffer materials with different hardness; in another optional process procedure, the buffer layer material can be heated in different regions to obtain parts with different elastic moduli to make the hard area and the soft area.

[0158] The buffer layer 11B is divided into a hard area 11B01 and a soft area 11B02 with different elastic moduli, the hard area 11B01 is located in the first non-bending area, which can improve the rigidity of the first non-bending area, and the soft area 11B02 with a smaller elastic modulus is located in the bending area to ensure that the bending area has good bending performance.

[0159] In Figure 18 , the elastic modulus of the buffer layer 11B (which can be called a third part) located in the second non-bending area and the third non-bending area can be less than the elastic modulus of the hard area 11B01 and greater than the elastic modulus of the soft area 11B02.

[0160] In some examples, in order to improve the stiffness of the second and third non-bending regions, the elastic modulus of the buffer layer 11B located in the second and third non-bending regions can be equal to the elastic modulus of the hard region 11B01.

[0161] When the elastic modulus of the buffer layer 11B located in the second and third non-bending regions is less than the elastic modulus of the hard region 11B01 but greater than the elastic modulus of the soft region 11B02, a buffer material can be coated first, at which point its modulus is lower. Then, it can be cross-linked by local UV curing or heating. By controlling the UV energy or heating temperature, a portion with a lower modulus and a portion with a higher modulus can be obtained.

[0162] Figure 19 This is a structural diagram of another display cover plate 113 or protective layer 114 provided in the embodiments of this application. It includes a substrate 11D and a buffer layer 11B, which are connected by an adhesive layer 11C.

[0163] In this example, the buffer layer 11B includes a hard portion 11B11 with a higher elastic modulus and a soft portion 11B12 with a lower elastic modulus, which are joined together. The hard portion 11B11 is located in a first non-bending region, and the soft portion 11B12 is located in at least one of the first bending region and the second bending region.

[0164] In some examples, such as Figure 19 The hard part 11B11 and the soft part 11B12 can be joined together using an adhesive layer 11B13. For example, when an adhesive layer 11C is applied to one side of the buffer layer 11B, the adhesive can overflow into the gap between the hard part and the soft part, thus bonding the hard part and the soft part together.

[0165] See Figure 19 In order to improve the stiffness of the second and third non-bending regions, the elastic modulus of the buffer layer 11B located in the second and third non-bending regions can be equal to the elastic modulus of the hard part.

[0166] In other examples, the elastic modulus of the buffer layer 11B located in the second and third non-bending regions can be less than the elastic modulus of the hard portion and greater than the elastic modulus of the soft portion.

[0167] exist Figure 19In an example, the material of the hard part 11B11 can be selected from at least one of polyethylene terephthalate (PET), transparent polyimide (CPI), and the like. The material of the soft part 11B12 can be selected from at least one of thermoplastic polyurethane elastomer (TPU), thermoplastic polyamide elastomer (TPAE), and the like.

[0168] Figure 20 is another structure diagram of the display cover plate 113 or the protective layer 114 given by an embodiment of the present application. The buffer layer 11B includes a first buffer layer 11B1 and a second buffer layer 11B2. The first buffer layer 11B1 includes a hard region 11B01 with a relatively large elastic modulus and a soft region 11B02 with a relatively small elastic modulus. In the second buffer layer 11B2, the thickness of the part located at the first bending region is designed as a non-uniform thickness structure. This embodiment combines the non-uniform thickness design and the non-uniform elastic modulus design of the buffer layer.

[0169] When the display module is in a folded state and the first non-bending region is exposed, the first bending region connecting the first non-bending region and the second non-bending region needs to have sufficient resistance to external force impact. For example, when the electronic device in the closed state falls, the first bending region may be damaged when it is impacted by the hinge mechanism on one side and the ground.

[0170] Some new display modules 11 are given by an embodiment of the present application, such as Figure 21 A buffer pad 127 is arranged on the side of the support plate 111 away from the display screen 112, and the buffer pad 127 is arranged at a position opposite to the first bending region of the support plate 111.

[0171] In some examples, in order to improve the bendability of the support plate 111, a hollow structure 111a is opened at a part opposite to the first bending region, and the buffer pad 127 is arranged at a position opposite to the hollow structure 111a.

[0172] The buffer pad 127 can be a film structure or a film structure with more layers.

[0173] In an example, the buffer pad 127 can be selected from at least one of stainless steel (SUS), thermoplastic polyurethane elastomer (TPU), porous foam (Foam) material, and PET film material.

[0174] Figure 22 is another structure diagram of the display module given by an embodiment of the present application. In this embodiment, the buffer pad 127 is arranged in the support plate 111. For example, a groove can be opened in the support plate 111, and the buffer pad 127 is arranged in the groove. The groove is located at a position opposite to the first bending region.

[0175] Figure 23 is another structure diagram of a display module given by an embodiment of the present application. In this embodiment, the buffer pad 127 is arranged on the rotating shaft mechanism 200 located at one side of the display module.

[0176] As shown in Figure 21 to Figure 23 , since the buffer pad 127 is included, when the first bending area is impacted by external force, the damage degree to the display module can be reduced by the buffering effect of the buffer pad 127.

[0177] Figure 24 is still another structure diagram of a display module given by an embodiment of the present application. In this structure, not only the display cover plate 113 located at the first bending area is designed as an unequal thickness structure, but also the buffer pad 127 is arranged at the side of the support plate 111 away from the display screen 112. Not only the rigidity of the exposed non-bending part can be improved, but also the bendable performance of the bending part will not be weakened, and the damage degree to the bending part of the display module can be reduced, and the use performance of the display module can be improved.

[0178] In some other examples, each area of the protection layer 114 can be designed as an unequal thickness structure.

[0179] As shown in Figure 25 , the cover plate (for example, display cover plate, protection layer) located at the side of the display surface of the display screen 112 is designed as an elastic modulus unequal structure as shown in Figure 17 to Figure 20 . And the buffer pad 127 is arranged at the position of the support plate 111 opposite to the first bending area. Not only the bendable performance of the bending part of the display module is optimized, but also the impact resistance and extrusion resistance performance of the bending part is improved.

[0180] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0181] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising: The display module and the shell, wherein The display module comprises a support plate, a display screen and a cover plate, the support plate and the cover plate are arranged on opposite sides of the display screen, the display screen comprises a first non-bending part, a second non-bending part, a third non-bending part, a first bending part and a second bending part, the first bending part connects the first non-bending part and the second non-bending part, the second bending part connects the second non-bending part and the third non-bending part, and the first bending part and the second bending part are bent along a bending line to switch between an unfolded state and a closed state; The side of the support plate away from the display screen is provided with a first buffer pad, and the first buffer pad is arranged at a position opposite to the first bending part on the support plate; The first buffer pad comprises a multi-layer film structure, and the multi-layer film structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer; The electronic device further comprises a rotating shaft mechanism, and a second buffer pad is arranged on the rotating shaft mechanism on one side of the display module; The second buffer pad comprises a multi-layer film structure, and the multi-layer film structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer. The part of the support plate opposite to the first bending part is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

2. The electronic device of claim 1, wherein, The first buffer pad comprises at least three layers of film structures.

3. The electronic device of claim 1, wherein, The material of the first buffer pad comprises at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

4. The electronic device of any of claims 1-3, wherein, The second buffer pad comprises at least three layers of film structures.

5. The electronic device of any of claims 1-3, wherein, The material of the second buffer pad comprises at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

6. The electronic device of any of claims 1-3, wherein, The first shell, the second shell, the third shell, the first rotating shaft mechanism, the second rotating shaft mechanism and the display module, wherein 7. An electronic device, comprising: The first shell and the second shell are arranged on two sides of the first rotating shaft mechanism, the first shell and the second shell are respectively connected with the first rotating shaft mechanism, the first rotating shaft mechanism moves to make the display module arranged on the first shell and the second shell flat and closed, the second shell and the third shell are arranged on two sides of the second rotating shaft mechanism, the second shell and the third shell are respectively connected with the second rotating shaft mechanism, and the second rotating shaft mechanism moves to make the display module arranged on the second shell and the third shell flat and closed; The display module comprises a display screen, and the display screen comprises a first non-bending part, a second non-bending part, a third non-bending part, a first bending part and a second bending part, the first bending part connects the first non-bending part and the second non-bending part, the second bending part connects the second non-bending part and the third non-bending part, and the first bending part and the second bending part are bent along a bending line to switch between an unfolded state and a closed state; ​ ​ The first rotating shaft mechanism is provided with a second buffer pad on one side of the display module, the second buffer pad is arranged at a position opposite to the first bending part, the second buffer pad comprises a multilayer film material structure, and the multilayer film material structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer; The display module further comprises a support plate, and the support plate is arranged on the back side of the display screen; The side of the support plate away from the display screen is provided with a first buffer pad, and the first buffer pad is arranged at a position opposite to the first bending part of the support plate; The first buffer pad comprises a multilayer film material structure, and the multilayer film material structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer.

8. The electronic device of claim 7, wherein, The part of the support plate opposite to the first bending part is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

9. The electronic device of claim 7, wherein, The first buffer pad comprises at least three layers of film material structure.

10. The electronic device of any of claims 7-9, wherein, The material of the first buffer pad comprises at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

11. The electronic device of any of claims 7-9, wherein, The second buffer pad comprises at least three layers of film material structure.

12. The electronic device of any of claims 7-9, wherein, The material of the second buffer pad comprises at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

13. An electronic device, comprising: Comprise: A shell and a display module; The display module is arranged on the shell; The electronic device further comprises a rotating shaft mechanism, a second buffer pad is arranged on the rotating shaft mechanism on one side of the display module, the second buffer pad comprises a multilayer film material structure, and the multilayer film material structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer; The display module comprises: A display screen; A cover plate arranged on the display side of the display screen, the cover plate comprises a first non-bending area, a second non-bending area, a third non-bending area, a first bending area and a second bending area, the first bending area connects the first non-bending area and the second non-bending area, the second bending area connects the second non-bending area and the third non-bending area, and the first bending area and the second bending area can be bent along a bending line to switch between an unfolded state and a closed state; The elastic modulus of the first non-bending area is greater than that of the first bending area; The display module further comprises: A support plate arranged on the side of the display screen away from the display surface; A first buffer pad arranged on the side of the support plate away from the display screen, and the first buffer pad is located at a position corresponding to the first bending area, the first buffer pad comprises a multilayer film material structure, and the multilayer film material structure comprises a stainless steel layer and a thermoplastic polyurethane elastomer layer.

14. The electronic device of claim 13, wherein, The part of the support plate opposite to the first bending part is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

15. The electronic device of claim 13, wherein, The first buffer pad comprises at least three layers of film material structure.

16. The electronic device of any of claims 13-15, wherein, The material of the first buffer pad comprises at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

17. The electronic device of any of claims 13-15, wherein, The second cushion includes at least three layers of film material structure.

18. The electronic device of any of claims 13-15, wherein, The material of the second cushion includes at least one of stainless steel, thermoplastic polyurethane elastomer elastomer, porous foam material, PET film material, etc.

Images