Display module and electronic equipment

Abstract

The embodiment of the invention provides a display module and electronic equipment comprising the display module. Relates to the technical field of display. According to the display module, the flattening rigidity can be improved, and the bending performance can be improved. The display module comprises a display screen and a cover plate arranged on one side of a display surface of the display screen, the display screen comprises at least two bending parts and three non-bending parts, namely, the display module is a multi-bending display module, and the cover plate is designed to be of an unequal-thickness structure. The cover plate is designed to have different thicknesses, so that the non-bending part can have high rigidity, and the bending part also has excellent bending performance.

Description

[0001] This application is a divisional application. The application number of the original application is 202310808453.6, and the original application date is June 30, 2023. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a display module and a foldable electronic device including the display module. Background Art

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

[0004] How to improve the performance of foldable electronic devices is the main problem currently faced. For example, the bending area has better bendability when bending, the non-bending area has higher flattening stiffness when flattening, and it needs to have better impact resistance and extrusion resistance. Summary of the invention

[0005] The present application provides a display module and an electronic device including the display module, such as a foldable electronic device, the main purpose of which is to improve the performance of the electronic device, such as improving the flattening rigidity of the non-bending area and improving the bending performance of the bending area.

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

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

[0008] The display module comprises a display screen and a cover plate, wherein the cover plate is arranged on one side of a display surface of the display screen; the display screen comprises a first non-bending portion, a second non-bending portion, a third non-bending portion, a first bending portion, and a second bending portion, wherein the first bending portion connects the first non-bending portion and the second non-bending portion, and the second bending portion connects the second non-bending portion and the third non-bending portion; the cover plate comprises a first non-bending region, a second non-bending region, a third non-bending region, a first bending region, and a second bending region, wherein the first bending region connects the first non-bending region and the second non-bending region, and the second bending region connects the second non-bending region 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 expanded state and the 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, since the thickness of the first non-bending area is not equal to the thickness of the second non-bending area in the cover plate, that is, the cover plate is designed as an unequal thickness structure. For example, in some scenarios, in order to improve the rigidity of the first non-bending area exposed in the closed state (to present the image to the user), when the thickness of the first non-bending area is increased, the unequal thickness design of the cover plate will basically not affect the bendability of the first bending area due to the increase in the thickness of the first non-bending area.

[0010] The display module provided in the present application not only has higher rigidity in the non-bending region, but also has better bendability in the bending region.

[0011] In one achievable manner, the thickness of the first non-bending region is greater than the thickness of the second non-bending region.

[0012] In some usage scenarios, in a closed state, the first non-bending region is exposed, and the stiffness of the first non-bending region is increased by making the thickness of the first non-bending region greater than the thickness of the second non-bending region.

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

[0014] In some implementation structures, at least one of the substrate or the buffer layer in the cover plate may be designed to have unequal thickness.

[0015] In one achievable manner, the thickness of the first buffer layer located in the first bending region gradually decreases from the first non-bending region to the second non-bending region.

[0016] In one achievable manner, the thickness of the first buffer layer in 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 located in 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 concealing effect on the visual segment difference of unequal thickness.

[0018] In one achievable manner, the first buffer layer is disposed on a surface of the first substrate facing the display screen.

[0019] Since the buffer layer is directly disposed on the surface of the substrate, compared with the solution in some examples in which the buffer layer is bonded to the substrate by an adhesive layer, the structure implemented in the present application can reduce the thickness of the display module.

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

[0021] In one achievable manner, the display module further includes a second substrate, the second substrate is disposed between the first buffer layer and the display screen, and the first buffer layer is disposed on a surface of the second substrate facing away from the display screen.

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

[0023] In one achievable manner, the material of the first buffer layer includes optically transparent adhesive (OCA) or the like.

[0024] In one achievable 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 in the first non-bending area, the second part of the second buffer layer is located in 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 may further include a second buffer layer. To further improve the bendability of the bending area, the second buffer layer may be designed to have a structure with unequal elastic moduli. The second buffer layer in this example may be a buffer layer of a protective layer disposed on one side of the display surface of the display screen, or a buffer layer in a display cover.

[0026] In one achievable 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 one achievable manner, the first portion of the second buffer layer and the second portion of the second buffer layer are an integrally formed structure; or, the first portion of the second buffer layer and the second portion of the second buffer layer are connected via an adhesive layer.

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

[0029] In one achievable manner, the second buffer layer also includes a third part, and 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 larger than the elastic modulus of the second part of the second buffer layer.

[0030] In one achievable manner, the thickness of the first bending region gradually decreases from the first non-bending region to the second non-bending region.

[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 thin-to-thick transition area.

[0032] In one possible implementation, the thickness of the second non-bending area gradually decreases 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 concealing effect on the visual segment difference of unequal thickness.

[0034] In one achievable manner, the thickness of the third non-bending region is smaller than the thickness of the first non-bending region.

[0035] In some scenarios, for a multi-fold display setting, in the closed state, the first non-bending area is visible to the user, and the second non-bending area and the third non-bending area are invisible to the user. In this implementation structure, the cover plate includes a thick area of ​​the first non-bending area, and thin areas of the second non-bending area and the third non-bending area, so as to meet the rigidity requirements of the electronic device in this scenario, and will not increase the thickness of the display module in the closed state too much.

[0036] In one achievable manner, from the first non-bending region to the third non-bending region, the thicknesses of the first bending region, the second non-bending region, the second bending region and the third non-bending region gradually decrease.

[0037] It has a further masking effect on visual segment differences of unequal thickness.

[0038] In one achievable manner, the display module further includes a support plate and a buffer pad, wherein the support plate is disposed on a side of the display screen away from the display surface; the buffer pad is disposed 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.

[0039] In one achievable manner, the display module further includes a support plate and a buffer pad, wherein the support plate is disposed on a side of the display screen away from the display surface; and the buffer pad is embedded in a position of the support plate corresponding to the first bending region.

[0040] In some examples, in order to ensure the bending performance of the bending area, the impact resistance and compression resistance of the bending part will be weakened. In the example of the present application, by providing a buffer pad at the portion of the support plate corresponding to the first bending area, the buffering characteristics of the buffer pad can be used to improve the impact resistance and compression resistance of the area. For example, the buffer pad can be provided on the side of the support plate away from the display screen, or the buffer pad can be embedded in the support plate.

[0041] In one achievable manner, when the first bending region 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 region forms an outwardly folded bending structure.

[0042] When the electronic device is in a closed state, the screen in the first non-bending area is visible to the user. The present application example can also be applied to a case where the screen in the first non-bending area is not visible to the user.

[0043] In one achievable manner, when the second bending area is in a 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 of the display screen, so that the second bending area forms an inwardly folded bending structure; and, 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 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 a closed state, an outer folding area and an inner folding area are formed.

[0045] In the second aspect, the present application provides a display module. The display module includes a display screen and a cover plate, 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, the second bending area connects the second 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 expanded state and the closed state. 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 in the present application, since the cover plate disposed on one side of the display surface of the display screen is designed as an unequal modulus structure, for example, the elastic modulus of the first non-bending region can be greater than the elastic modulus of the first bending region. On the basis of ensuring that the first non-bending region has a high rigidity, the first bending region can also have a better bendability.

[0047] In one achievable manner, the elastic modulus of the first non-bending region is greater than the elastic modulus of the first bending region.

[0048] In some usage scenarios, in the closed state, the first non-bending area is exposed, and the elastic modulus of the first non-bending area is greater than the elastic modulus of the first bending area, thereby improving the stiffness of the first non-bending area and ensuring the bendability of the first bending area.

[0049] In one achievable manner, the cover plate includes 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 includes a first part and a second part; the first part of the buffer layer is located in a first non-bending area, and the second part of the buffer layer is located in a first bending area, and 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 one achievable manner, the first portion of the buffer layer and the second portion of the buffer layer are an integrally formed structure; or, the first portion of the buffer layer and the second portion of the buffer layer are connected via an adhesive layer.

[0051] In some embodiments of the present application, two implementation methods are provided for the cover plate to have unequal moduli. Of course, other methods may also be used.

[0052] In one achievable manner, the buffer layer also includes a third part, and 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 smaller than the elastic modulus of the first part of the buffer layer, and larger than the elastic modulus of the second part of the buffer layer.

[0053] In one achievable manner, the display module further includes a support plate and a buffer pad, wherein the support plate is disposed on a side of the display screen away from the display surface; the buffer pad is disposed 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 one achievable manner, the display module further includes a support plate and a buffer pad, wherein the support plate is disposed on a side of the display screen away from the display surface; and the buffer pad is embedded in a position of the support plate corresponding to the first bending region.

[0055] In some examples, in order to ensure the bending performance of the bending area, the impact resistance and compression resistance of the bending part will be weakened. In the example of the present application, by providing a buffer pad at the portion of the support plate corresponding to the first bending area, the buffering characteristics of the buffer pad can be used to improve the impact resistance and compression resistance of the area. For example, the buffer pad can be provided on the side of the support plate away from the display screen, or the buffer pad can be embedded in the support plate.

[0056] In one achievable manner, when the first bending region 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 region forms an outwardly folded bending structure.

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

[0058] In one achievable manner, when the second bending area is in a 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 of the display screen, so that the second bending area forms an inwardly folded bending structure; and, 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 of the display screen, so that the first bending area forms an outwardly folded bending structure.

[0059] In some embodiments of the present application, when the electronic device is in a closed state, an outer folding area and an inner folding area are formed.

[0060] In a third aspect, the present application further provides an electronic device, comprising a housing and a display module in any of the above implementations, wherein the display module is disposed on the housing.

[0061] The electronic device provided in the embodiment of the present application includes the above-mentioned display module. Therefore, the electronic device provided in the embodiment of the present application and the display module of the above-mentioned technical solution can solve the same technical problems and achieve the same expected effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A structural diagram of a foldable electronic device;

[0063] Figure 2 A structural diagram of a multi-fold display module in a flattened state;

[0064] Figure 3 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0065] Figure 4 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0066] Figure 5 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0067] Figure 6 A structural diagram of a multi-fold display module in a closed state provided in an embodiment of the present application;

[0068] Figure 7 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0069] Figure 8 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0070] Fig. 9A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0071] Fig.10 A structural diagram of a multi-fold display module provided in an embodiment of the present application;

[0072] Fig.11 A structural diagram of a cover plate in a flattened state in a multi-fold display module provided in an embodiment of the present application;

[0073] Fig.12 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0074] Fig.13 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0075] Fig.14 A structural diagram of a cover plate in a flattened state in a multi-fold display module provided in an embodiment of the present application;

[0076] Fig.15 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0077] Fig.16 A structural diagram of a cover plate in a flattened state in a multi-fold display module provided in an embodiment of the present application;

[0078] Fig.17 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0079] Fig.18 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0080] Fig.19 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0081] Fig. 20 A structural diagram of a multi-fold display module provided in an embodiment of the present application, in which a cover plate is in a flattened state;

[0082] Fig.21 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0083] Fig. 22 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0084] Fig.23A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0085] Fig.24 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application;

[0086] Fig.25 A structural diagram of a multi-fold display module in a flattened state provided in an embodiment of the present application. DETAILED DESCRIPTION

[0087] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0088] The embodiment of the present application provides an electronic device with a foldable screen, which may include a mobile phone, a tablet computer (pad), a smart wearable product (e.g., a smart watch, a smart bracelet), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and other electronic products with display functions. The embodiment of the present application does not impose any special restrictions on the specific form of the electronic device with a display function.

[0089] For the convenience of explanation, the structure of the electronic device is described below by taking a mobile phone as an example.

[0090] Figure 1 A structural diagram of a folding screen mobile phone is shown, and the folding screen mobile phone of the example is a three-screen folding mobile phone. The three-folding screen mobile phone may include a first shell 100a, a second shell 100b and a third shell 100c, and a display module 11. The display module 11 may be continuously covered on the first shell 100a, the second shell 100b and the third shell 100c. The folding screen mobile phone may also include a first rotating shaft mechanism and a second rotating shaft mechanism.

[0091] The first shell 100a and the second shell 100b are arranged on both sides of the first hinge mechanism and are respectively connected to the first hinge mechanism. The first hinge mechanism can move so that the first shell 100a and the second shell 100b are relatively folded or relatively unfolded, thereby realizing the flattening and closing of the display module 11 arranged on the first shell 100a and the second shell 100b.

[0092] The second shell 100b and the third shell 100c are arranged on both sides of the second hinge mechanism and are respectively connected to the second hinge mechanism. The second hinge mechanism can move so that the second shell 100b and the third shell 100c are relatively folded or relatively unfolded, thereby realizing the flattening and closing of the display module 11 arranged on the second shell 100b and the third shell 100c.

[0093] A foldable electronic device can be unfolded to a flat state, or folded to a closed state, or in an intermediate state between the flat state and the closed state. A foldable electronic device has at least two states, namely, a flat state and a closed state. In some cases, a third state may be further included, which is an intermediate state between the flat state and the closed state. The intermediate state does not have only one state, and may be any one or more states between the flat state and the closed state of the electronic device.

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

[0095] Among foldable electronic devices, multi-folding ones are becoming more and more popular among users, for example, Figure 1 When the electronic device is in a folded (or closed) state, Figure 1 The non-bending area B1 of the display module is exposed. In order to enhance the ability of the exposed non-bending area to resist external force damage, the thickness of the non-bending area B1 may be increased to enhance the rigidity and strength.

[0096] like Figure 2 The display module 11 may include a support plate (bracket) 111 , a display screen (panel) 112 and a cover plate 110 .

[0097] The support plate 111 and the cover plate 110 are arranged on opposite sides of the display screen 112. The support plate 111 is located on the back side of the display screen 112 and serves as a supporting structure for supporting the display screen 112. The cover plate 110 is located on the display surface side of the display screen 112 and is used to protect the display screen 112 and reduce the probability of the display screen 112 being damaged.

[0098] The display surface of the display screen 112 is: the side of the display screen 112 used to display the image to the user, and the back side of the display screen 112 refers to the side opposite to the display surface of the display screen 112. The back side of the display screen 112 can also be the side away from the display surface.

[0099] like Figure 2As shown, since the various film layer structures in the display module 11 are connected together and are in the form of a sheet-like 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 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 increase accordingly, resulting in a larger thickness of the entire machine when it is closed.

[0100] Even if the stiffness of the non-bending area B1 is improved by increasing the thickness of the display module 11, the thicker screen will affect the bending performance of the bending area A1 and the bending area A2, increase 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 bendability of the bending area.

[0102] Figure 3 1 is a structural diagram of a display module provided in an embodiment of the present application. The display module 11 includes a support plate (bracket) 111, a display screen (panel) 112 and a cover plate 110. The support plate 111 and the cover plate 110 are arranged on opposite sides of the display screen 112. The support plate 111 is located on the back side of the display screen 112 as a support structure for supporting the display screen 112; the cover plate 110 is located on the display surface side of the display screen 112 for protecting the display screen 112.

[0103] The display screen 112 in the display module 11 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, and the second bending portion connects the second non-bending portion and the third non-bending portion.

[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 region, the first bending portion, the second bending region and the second bending portion can all be bent along the bending line to switch between an expanded state and a closed state.

[0107] Figure 3 Take the three-screen folding as an example. In other examples, you can Figure 3 Based on the structure shown, more bending areas and non-bending areas are added to form electronic devices such as four-screen folding and five-screen folding.

[0108] like Figure 3 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 may be greater than the thickness d2.

[0109] Figure 4 is a structural diagram of another display module provided in an embodiment of the present application. and Figure 3 Similarly, 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.

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

[0111] In some examples, the thickness dimension involved in the embodiments of the present application refers to: Figure 3 The dimension along the stacking direction (P direction) of multiple film layers.

[0112] Figure 3 , Figure 4 and Figure 5 In the three different examples of the display module 11 shown, 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, that is, from the first non-bending area to the second non-bending area, so that the thickness d2 is smaller than the thickness d1.

[0113] like Figures 3 to 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 connected between the first non-bending area and the second non-bending area is a thin-to-thick transition area.

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

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

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

[0117] exist Figure 4 In the embodiment, the thickness of the second bending area and the third non-bending area of ​​the cover plate 110 are equal, that is, the thickness d5 is equal to the thickness d3.

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

[0119] and Figure 3 and Figure 4 In comparison, Figure 5 In the embodiment, not only the thickness of the first bending area and the second non-bending area of ​​the cover plate 110 is not constant, but also the thickness of the second bending area and the third non-bending area of ​​the cover plate 110 is not constant. Along the direction away from the first non-bending area, the thickness of the first bending area, the second non-bending area, the second bending area and the third non-bending area of ​​the cover plate 110 gradually decreases. This can further cover up the visual effect of the uneven thickness of the entire display module.

[0120] Figure 6 Yes Figure 3The structural diagram of the display module 11 after bending given in the embodiment of the present application. The thickness of the first non-bending area that is exposed (visible to the user when folded) is greater than the thickness of the second non-bending area that is not exposed (invisible to the user when folded). The first bending area connected to the exposed first non-bending area is designed to be an unequal thickness structure. Even if the thickness of the first non-bending area is increased in order to improve the rigidity and strength of the first non-bending area, the bendability of the bending area will not be affected. The thickness of other areas will not be increased, and when the whole machine is in a folded state, the thickness of the closed state will not be significantly increased.

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

[0122] like 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 one side of the display surface of the display module 11 is visible to the user.

[0123] like Figure 6 The inner folding area refers to the area where the display screen is located inside the electronic device during the process of the electronic device being transformed from the flat state to the closed state and when the electronic device is in the closed state, that is, the display screen gradually becomes invisible to the user during the folding process until the display module 11 is completely hidden between the two shells in the closed state. The display surface of the display module 11 is hidden and is invisible to the user.

[0124] like Figure 7 , Figure 7 1 is a structural diagram of a display module provided in an embodiment of the present application, wherein the cover plate 110 may include a display cover plate 113 and a protective layer 114. The display cover plate 113 is disposed on one side of the display surface of the display screen 112, and the protective layer 114 is disposed 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-transmissive. The light transmitted from the display surface of the display screen 112 can pass through the display cover plate 113 and the protective layer 114 and be received by the user.

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

[0126] Of course, in some other examples, the cover plate 110 may 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 embodiment of the present application, the display screen (panel) 112 may be a flexible display screen, and the cover plate 110 may be a flexible structure to meet folding requirements.

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

[0129] exist Figure 7 In the embodiment, the thickness of the protection layer 114 in each bending region and each non-bending region is equal.

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

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

[0132] Fig. 9 is a structural diagram of another display module provided in an embodiment of the present application. Figure 8In comparison, in this structure, along the direction away from the first non-bending area, the thickness of the first bending area and the thickness of the second non-bending area in the protective layer 114 gradually decrease, thereby widening the width of the thin-to-thick transition zone of the protective layer 114.

[0133] Fig.10 is a structural diagram of another display module provided in an embodiment of the present application. Figure 8 and Fig. 9 In contrast, in this example, in the protective layer 114, 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 gradually decrease in the direction away from the first non-bending region, further widening the width of the thin-thick transition zone of the protective layer 114.

[0134] Figures 8 to 10 In the embodiment, the protective layer 114 is designed as a structure with uneven thickness. In other examples, the uneven thickness transition zone can be set in other film layer structures, for example, in the display cover plate 113, Figures 8 to 10 The structure shown.

[0135] In some examples provided in this application, Fig.11 , the display cover 113 or the protective layer 114 may include: a substrate 11D and a buffer layer 11B.

[0136] The substrate 11D and the buffer layer 11B may be connected via an adhesive layer 11C, and the adhesive layer 11A connects the stacked film layer structures to other layer structures. Fig.11 When the protective layer 114 is shown, the structure including the substrate 11D, the adhesive layer 11C and the buffer layer 11B can be connected to the display cover 113 by using the adhesive layer 11A.

[0137] Among some selectable materials, the substrate 11D may 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 elastomeric film material, and the elastic modulus of the buffer layer 11B is smaller than the elastic modulus of the substrate 11D. The buffer layer 11B can be made of at least one of elastomeric film materials such as thermoplastic polyurethane elastomer TPU and thermoplastic polyamide elastomer TPAE.

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

[0140] See also Fig.11 In this embodiment, the buffer layer 11B located in the first bending region is designed as a structure of unequal thickness. Along the direction away from the first non-bending region, the thickness of the buffer layer 11B located in the first bending region gradually decreases, so that the protective layer 114 or the display cover plate 113 located in the first bending region is a thick-thin transition zone.

[0141] exist Fig.11 In the embodiment, the thickness of the substrate 11D may be 25 μm to 75 μm, and the thickness of the adhesive layer 11A and the adhesive layer 11C may be 25 μm to 50 μm.

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

[0143] Fig.12 This is another structural diagram of a display cover plate 113 or a protective layer 114 provided in an embodiment of the present application. In this example, the substrate 11D located in the first bending region is designed to have a structure of unequal thickness. Along the direction away from the first non-bending region, the thickness of the substrate 11D located in the first bending region gradually decreases, so that the protective layer 114 or the display cover plate 113 located in the first bending region is a thick-thin transition zone.

[0144] Fig.13 is another structural diagram of a display cover plate 113 or a protective layer 114 provided in an embodiment of the present application. Fig.12 In comparison, not only the buffer layer 11B located in the first bending area is designed as a structure with unequal thickness, but also the buffer layer 11B located in the second non-bending area is designed as a structure with unequal thickness, so as to weaken the visual effect of uneven thickness of the entire display module.

[0145] Fig.14 1 is a structural diagram of another display cover plate 113 or protective layer 114 provided in an embodiment of the present application. In some examples, the thickness of the buffer layer 11B is relatively large, for example, the thickness reaches 100 μm. Due to the thick buffer layer, the strain generated on the upper and lower surfaces of the film material when the display module is bent is easy to enter the plastic deformation stage.

[0146] When the display module is bent, in order to weaken the strain generated on the upper and lower surfaces of the display module, the plastic deformation stage is entered to improve the bendability. In some examples, such as Fig.14 The buffer layer 11B includes a first buffer layer 11B1 and a second buffer layer 11B2. The first buffer layer 11B is of equal thickness, and the second buffer layer 11B2 located in the first bending region is designed to be of unequal thickness. The second buffer layer 11B2 of uneven thickness is farther away from the display screen than the first buffer layer 11B1 of uniform thickness, that is, closer to the interface visible to the user; in other examples, the first buffer layer 11B1 of uniform thickness can also be closer to the interface visible to the user than the second buffer layer 11B2 of uneven thickness.

[0147] See also Fig.14 The first buffer layer 11B1 is connected to the second buffer layer 11B2 via an adhesive layer 11E, and the second buffer layer 11B2 is connected to the substrate 11D via an adhesive layer 11C.

[0148] Fig.15 This is another structural diagram of a display cover plate 113 or a protective layer 114 provided in an embodiment of the present application. In some optional processes, a coating process can be used to bond the buffer layer 11B to the substrate 11D. The adhesive layer used to connect the buffer layer 11B and the substrate 11D can be removed to reduce the thickness of the entire display module without weakening the rigidity of the non-bending area and the bendability of the bending area.

[0149] Fig.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] See also Fig.15 In this example, the buffer layer 11B located in the first bending region is designed to have an unequal thickness structure, and the thickness of each region of the substrate 11D is equal.

[0151] Fig.16 This is another structural diagram of a display cover plate 113 or a protective layer 114 provided in an embodiment of the present application. In some optional processes, a coating process can also be used to bond the buffer layer 11B to the substrate 11D. The buffer layer 11B in this example can be made of a sticky material, such as an optically transparent adhesive OCA. The buffer layer 11B is not only an elastic film material, but also has a connecting function, so the adhesive layer 11A may not be required. The thickness of the display module can be further compressed.

[0152] See also Fig.16 In this example, the buffer layer 11B located in the first bending region is designed to have an unequal thickness structure, and the thickness of each region of the substrate 11D is equal.

[0153] In order to improve the rigidity of the exposed non-bending area without weakening the bendability of the bending area, the present application also provides some structures that can be implemented, as follows:

[0154] Fig.17 1 is a structural diagram of a display module provided in an embodiment of the present application. In the cover plate 110 of the display module 11, the elastic modulus in the first non-bending area is greater than the elastic modulus in 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 set in at least one of the display cover plate and the protective layer. Fig.18 1 is a structural diagram of a display cover plate 113 or a protective layer 114 provided in an embodiment of the present application, including a substrate 11D and a buffer layer 11B, wherein the substrate 11D and the buffer layer 11B are connected via an adhesive layer 11C.

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

[0157] exist Fig.18 In the embodiment, the hard region 11B01 and the soft region 11B02 are connected together as an integral structure. In some optional process steps, 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; in other optional process steps, the buffer layer material can be heated in different regions to obtain parts with different elastic moduli to obtain hard regions and soft regions.

[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 to improve the stiffness of the first non-bending area. The soft area 11B02 with a smaller elastic modulus is located in the bending area to ensure that the bending area has better bendability.

[0159] exist Fig.18 In the embodiment, the elastic modulus of the buffer layer 11B (which may be called the third part) located in the second non-bending area and the third non-bending area may be smaller than the elastic modulus of the hard area 11B01 and larger than the elastic modulus of the soft area 11B02.

[0160] In some examples, in order to improve the stiffness of the second non-bending region and the third non-bending region, the elastic modulus of the buffer layer 11B located in the second non-bending region and the third non-bending region may 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 non-bending area and the third non-bending area is smaller than the elastic modulus of the hard area 11B01 and larger than the elastic modulus of the soft area 11B02, the buffer material can be first coated, at which time its modulus is lower, and then cross-linked by local UV curing or heating, and a lower modulus part and a higher modulus part can be obtained by controlling the UV energy or heating temperature.

[0162] Fig.19 It is a structural diagram of another display cover plate 113 or protective layer 114 provided in an embodiment of the present application, including a substrate 11D and a buffer layer 11B, wherein the substrate 11D and the buffer layer 11B are connected via an adhesive layer 11C.

[0163] In this example, the buffer layer 11B includes a hard part 11B11 with a larger elastic modulus and a soft part 11B12 with a smaller elastic modulus, which are spliced ​​together. The hard part 11B11 is located in the first non-bending area, and the soft part 11B12 is located in at least one of the first bending area and the second bending area.

[0164] In some examples, such as Fig.19 , the hard part 11B11 and the soft part 11B12 can be spliced ​​together by using the adhesive layer 11B13. For example, when the adhesive layer 11C located on one side of the buffer layer 11B is coated, the colloid can overflow into the gap between the hard part and the soft part to bond the hard part and the soft part together.

[0165] See also Fig.19 In order to improve the rigidity of the second non-bending region and the third non-bending region, the elastic modulus of the buffer layer 11B located in the second non-bending region and the third non-bending region may be equal to the elastic modulus of the hard part.

[0166] In some other examples, the elastic modulus of the buffer layer 11B located in the second non-bending region and the third non-bending region may be smaller than the elastic modulus of the hard portion and larger than the elastic modulus of the soft portion.

[0167] exist Fig.19In the example, the material that can be selected for the hard part 11B11 includes at least one of polyethylene terephthalate (PET), transparent polyimide (CPI), etc. The material that can be selected for the soft part 11B12 includes at least one of thermoplastic polyurethane elastomer TPU, thermoplastic polyamide elastomer TPAE, etc.

[0168] Fig. 20 This is another structural diagram of a display cover plate 113 or a protective layer 114 provided in 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 larger elastic modulus and a soft region 11B02 with a smaller elastic modulus. In the second buffer layer 11B2, the thickness of the portion located in the first bending region is designed to be an unequal thickness structure. This embodiment combines the unequal thickness design of the buffer layer with the unequal elastic modulus design.

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

[0170] The embodiments of the present application provide some novel display modules 11, such as Fig.21 A buffer pad 127 is provided on a side of the support plate 111 away from the display screen 112 , and the buffer pad 127 is provided at a position of the support plate 111 opposite to the first bending area.

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

[0172] The buffer pad 127 may be a one-layer film structure, or a multi-layer film structure.

[0173] For example, the buffer pad 127 can be made of at least one of stainless steel SUS, thermoplastic polyurethane elastomer TPU elastomer, porous foam Foam material, PET film material and the like.

[0174] Fig. 22 1 is a structural diagram of another display module provided in an embodiment of the present application. In this embodiment, the buffer pad 127 is disposed in the support plate 111. For example, a groove may be provided in the support plate 111, and the buffer pad 127 may be disposed in the groove, and the groove is located at a position opposite to the first bending area.

[0175] Fig.23 1 is a structural diagram of another display module provided in an embodiment of the present application. In this embodiment, the buffer pad 127 is arranged on the rotating shaft mechanism 200 located on one side of the display module.

[0176] like Figure 21 to Figure 23 Since the buffer pad 127 is included, when the first bending area is impacted by external force, the buffering effect of the buffer pad 127 can reduce the degree of damage to the display module.

[0177] Fig.24 1 is a structural diagram of another display module provided in an embodiment of the present application. In this structure, not only is the display cover plate 113 located in the first bending area designed to be a structure of unequal thickness, but a buffer pad 127 is also provided on the side of the support plate 111 away from the display screen 112. This can not only improve the rigidity of the exposed non-bending part, but also will not weaken the bendability of the bending part, and can also reduce the degree of damage to the bending part of the display module, thereby improving the performance of the display module.

[0178] In some other examples, various regions of the protection layer 114 may be designed to have structures of unequal thickness.

[0179] like Fig.25 As shown, the cover plate (eg, display cover plate, protective layer) located on one side of the display surface of the display screen 112 is designed as follows Figures 17 to 20 The elastic modulus unequal structure shown in FIG. Also, the buffer pad 127 is arranged at a position of the support plate 111 opposite to the first bending area. This not only optimizes the bendability of the bending portion of the display module, but also improves the impact resistance and extrusion resistance of the bending portion.

[0180] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[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 who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: A display module and a housing, wherein the display module is arranged on the housing, wherein: The display module includes a support plate, a display screen and a cover plate, wherein the support plate and the cover plate are arranged on opposite sides of the display screen, and 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, wherein the first bending portion connects the first non-bending portion and the second non-bending portion, and the second bending portion connects the second non-bending portion and the third non-bending portion, and the first bending portion and the second bending portion are bent along a bending line to switch between an expanded state and a closed state; A first buffer pad is arranged on a side of the support plate away from the display screen, and the first buffer pad is arranged at a position of the support plate opposite to the first bent portion.

2. The electronic device according to claim 1, characterized in that: A portion of the support plate opposite to the first bent portion is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

3. The electronic device according to claim 1 or 2, characterized in that: The first buffer pad includes a single-layer film material structure or a multi-layer film material structure.

4. The electronic device according to any one of claims 1 to 3, characterized in that: The material of the first buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further comprises a hinge mechanism, and a second buffer pad is arranged on the hinge mechanism located at one side of the display module.

6. The electronic device according to claim 5, characterized in that: The second buffer pad includes a single-layer film material structure or a multi-layer film material structure.

7. The electronic device according to claim 5 or 6, characterized in that: The material of the second buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

8. A display module, characterized in that: include: A cushion, a support plate, a display screen and a cover plate, wherein: The support plate and the cover plate are arranged on opposite sides of the display screen, the display screen comprises: 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 first bending portion and the second bending portion are bent along a bending line to switch between an expanded state and a closed state; A first buffer pad is arranged on a side of the support plate away from the display screen, and the first buffer pad is arranged at a position of the support plate opposite to the first bent portion.

9. The display module according to claim 8, characterized in that: A portion of the support plate opposite to the first bent portion is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

10. The display module according to claim 8 or 9, characterized in that: The first buffer pad includes a single-layer film material structure or a multi-layer film material structure.

11. The display module according to any one of claims 8 to 10, characterized in that: The material of the first buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

12. An electronic device, characterized in that: include: A first shell, a second shell, a third shell, a first rotating shaft mechanism, a second rotating shaft mechanism and a display module, wherein: The first shell and the second shell are arranged on both sides of the first rotating shaft mechanism, the first shell and the second shell are respectively connected to the first rotating shaft mechanism, the first rotating shaft mechanism moves to flatten and close the display module arranged on the first shell and the second shell, the second shell and the third shell are arranged on both sides of the second rotating shaft mechanism, the second shell and the third shell are respectively connected to the second rotating shaft mechanism, the second rotating shaft mechanism moves to flatten and close the display module arranged on the second shell and the third shell; The first rotating shaft mechanism is located at one side of the display module and a second buffer pad is provided.

13. The electronic device according to claim 12, characterized in that: The display module includes a support plate, a display screen and a cover plate, wherein the support plate and the cover plate are arranged on opposite sides of the display screen, and 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, wherein the first bending portion connects the first non-bending portion and the second non-bending portion, and the second bending portion connects the second non-bending portion and the third non-bending portion, and the first bending portion and the second bending portion are bent along a bending line to switch between an expanded state and a closed state; A first buffer pad is arranged on a side of the support plate away from the display screen, and the first buffer pad is arranged at a position of the support plate opposite to the first bent portion.

14. The electronic device according to claim 13, characterized in that: A portion of the support plate opposite to the first bent portion 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 according to claim 13 or 14, characterized in that: The first buffer pad includes a single-layer film material structure or a multi-layer film material structure.

16. The electronic device according to any one of claims 13 to 15, characterized in that: The material of the first buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

17. The electronic device according to any one of claims 12 to 16, characterized in that: The second buffer pad includes a single-layer film material structure or a multi-layer film material structure.

18. The electronic device according to any one of claims 12 to 17, characterized in that: The material of the second buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

19. A display module, characterized in that: include: Display screen; a cover plate, arranged on a display surface side of the display screen, 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, and the first bending area and the second bending area both being able to be bent along a bending line to switch between an expanded state and a closed state; The elastic modulus of the first non-bending region is not equal to the elastic modulus of the first bending region.

20. The display module according to claim 19, characterized in that: The elastic modulus of the first non-bending region is greater than the elastic modulus of the first bending region.

21. The display module according to claim 19 or 20, characterized in that: The display module also includes: A support plate, the support plate being arranged on a side of the display screen away from a display surface; A first 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.

22. The display module according to claim 21, characterized in that: A portion of the support plate opposite to the first bent portion is provided with a hollow structure, and the first buffer pad is arranged at a position opposite to the hollow structure.

23. The display module according to claim 21 or 22, characterized in that: The first buffer pad includes a single-layer film material structure or a multi-layer film material structure.

24. The display module according to any one of claims 21 to 23, characterized in that: The material of the first buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

25. An electronic device, characterized in that: include: A housing and a display module as claimed in any one of claims 19 to 24; The display module is arranged on the housing.

26. The electronic device according to claim 25, characterized in that: The electronic device further comprises a hinge mechanism, and a second buffer pad is arranged on the hinge mechanism located at one side of the display module.

27. The electronic device according to claim 26, characterized in that: The second buffer pad includes a single-layer film material structure or a multi-layer film material structure.

28. The electronic device according to claim 26 or 27, characterized in that: The material of the second buffer pad includes at least one of stainless steel, thermoplastic polyurethane elastomer, porous foam material, PET film material and the like.

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