Display module and sliding and curling display device

Abstract

The invention discloses a display module and a sliding and curling display device.The display module is applied to the sliding and curling display device.The display module comprises a supporting layer, a first protection layer and a display layer, and the upper surface of the display layer is attached to the lower surface of the first protection layer; the supporting layer comprises a substrate layer and a second protection layer; the lower surface of the substrate layer is attached to the upper surface of the second protective layer; the substrate layer is provided with a concave structure, the concave structure is filled with at least two kinds of rubber materials with different tensile modulus, and the substrate layer is connected with the second protection layer through the rubber materials. According to the display module, the concave structure is arranged on the supporting layer, and the concave structure is filled with at least two kinds of rubber materials with different tensile moduli, so that the attaching effect of the substrate layer and the second protection layer can be improved, and when the display module curls, the second protection layer can be prevented from being peeled off under the action of stress.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a sliding and curling display device. Background Art

[0002] With the innovation and development of flexible display technology, the market share of flexible display devices has increased year by year, and flexible screens have become more and more common products in the fields of mobile phones, televisions, and cars. With the development of technology, display devices with sliding and curling forms will surely occupy a place in the future flexible display field due to their obvious advantages such as small space occupation and portability.

[0003] However, since the force direction of the display screen of the sliding and curling display device changes suddenly during the sliding or curling process, there is a problem that the display screen of the sliding and curling display device may peel off due to the change in force. Summary of the invention

[0004] In view of this, the present application provides a display module and a sliding and curling display device to solve the problem of film peeling of the display screen due to force changes on the display screen itself in the traditional solution.

[0005] In a first aspect, the present application provides a display module, which is applied to a sliding and curling display device, comprising: a supporting layer, a first protective layer and a display layer, wherein the upper surface of the display layer is bonded to the lower surface of the first protective layer; the supporting layer comprises a substrate layer and a second protective layer; the lower surface of the substrate layer is bonded to the upper surface of the second protective layer, and the display layer is arranged above the substrate layer; a recessed structure is provided on the supporting layer, the recessed structure is filled with at least two adhesives with different tensile moduli, and the substrate layer is connected to the second protective layer through the adhesive.

[0006] Optionally, the support layer further includes a glue layer; the upper surface of the glue layer is bonded to the lower surface of the display layer, and the lower surface of the glue layer is bonded to the upper surface of the substrate layer.

[0007] Optionally, the substrate layer is made of metal or carbon fiber.

[0008] Optionally, the recessed structure includes at least one of a blind hole, a through groove, a through hole and a through slit, the blind hole and the through groove are arranged on the lower surface of the substrate layer, and the through hole and the through slit penetrate the substrate layer in a direction from the lower surface to the upper surface of the substrate layer.

[0009] Optionally, the recessed structure gradually decreases in a direction from the upper surface of the substrate layer to the lower surface of the substrate layer on a cross section perpendicular to the lower surface of the substrate layer and parallel to the curling axis direction of the display module.

[0010] Optionally, the recessed structure includes the blind hole or the through hole, and the blind hole or the through hole is staggeredly arranged in a direction perpendicular to the curling axis of the display module on a cross section parallel to the lower surface of the substrate layer.

[0011] Optionally, the blind holes and the through holes are strip holes, and the length direction of the strip holes is parallel to the curling axis direction of the display module; the extension direction of the through grooves and the through slits is parallel to the curling axis direction of the display module.

[0012] Optionally, along the direction from the lower surface to the upper surface of the substrate layer, the ratio of the depth of the blind hole to the thickness of the substrate layer is in the range of [0.25, 0.75], and the ratio of the depth of the through groove to the thickness of the substrate layer is in the range of [0.25, 0.75].

[0013] Optionally, on the lower surface of the substrate layer, the width of the blind hole, the through groove, the through hole and the through slit is in the range of [0.2mm, 10mm], wherein the width direction of the blind hole and the through hole is perpendicular to the length direction, and the width direction of the through groove and the through slit is perpendicular to the extension direction.

[0014] Optionally, a first adhesive material is provided on the lower surface of the substrate layer, part of the first adhesive material is filled into the recessed structure, and the recessed structure is filled with a second adhesive material, and the second adhesive material is located between the first adhesive material and the adhesive layer; the second protective layer is bonded to the first adhesive material; preferably, the material of the second protective layer is an organic material; preferably, the plane where the surfaces where the first adhesive material and the second protective layer are bonded are located is parallel to the plane where the lower surface of the substrate layer is located; preferably, at least one of the first adhesive material, the second adhesive material and the second protective layer is opaque.

[0015] Optionally, the adhesive material includes at least one of silicone rubber, thermoplastic polyurethane rubber or polyimide adhesive; preferably, the tensile modulus of the adhesive material is less than 10 GPa, and the tensile modulus of the first adhesive material is less than the tensile modulus of the second adhesive material.

[0016] A second aspect of the present application provides a sliding and curling display device, comprising the display module as described in the first aspect of the embodiment.

[0017] The present application provides a recessed structure on the support layer and fills the recessed structure with at least two adhesives with different tensile moduli, thereby improving the bonding effect between the substrate layer and the second protective layer, and preventing the second protective layer from peeling off under stress when the display module curls. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic diagram of a display module according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a support layer including a blind hole according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a support layer including through grooves according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of a support layer including through holes according to an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of a support layer including a through seam according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a support layer according to an embodiment of the present application;

[0025] Figure 7 4 is a cross-sectional view of a support layer including a first adhesive material and a second adhesive material according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0027] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0029] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and their technical features can be combined with each other.

[0030] Figure 1 Schematic diagram of a display module according to an embodiment of the present application. Figure 1 As shown, the display module includes: a support layer 1 , a first protective layer 2 and a display layer 3 , and the upper surface of the display layer 3 is bonded to the lower surface of the first protective layer 2 .

[0031] The support layer 1 includes a substrate layer 12 and a second protective layer 13. The lower surface of the substrate layer 12 is bonded to the upper surface of the second protective layer 13. A recessed structure 121 is provided on the support layer 1. The recessed structure 121 is filled with at least two adhesives 14 with different tensile moduli. The substrate layer 12 is connected to the second protective layer 13 via the adhesive 14.

[0032] The display module is applied to a sliding and curling display device, and mainly includes a supporting layer 1, a first protective layer 2 and a display layer 3. The display layer 3 emits light outward through the first protective layer 2. The edge of the lower surface of the supporting layer 1 is in contact with the rotating shaft of the sliding and curling display device. When the sliding and curling display device is folded, the display module curls from the position where the lower surface of the supporting layer 1 is in contact with the rotating shaft, and the portion where the lower surface of the supporting layer 1 is in contact with the rotating shaft gradually increases to fold the display module. Since the substrate layer 12 and the second protective layer 13 are generally bonded by a kind of adhesive, and the same kind of adhesive has different bonding capabilities for substrate layers 12 and second protective layers 13 of different materials, during the curling process, the support layer 1 is slightly deformed, and the deformation of the substrate layer 12 and the second protective layer 13 is slightly different, resulting in the substrate layer 12 and the second protective layer 13 in the support layer 1 may peel off under the action of stress. Therefore, a recessed structure 121 is provided on the support layer 1, and at least two adhesives 14 with different tensile moduli are filled in the recessed structure 121. The tensile modulus of the adhesive 14 refers to the ratio of stress to strain of the adhesive 14 under the action of force. The higher the tensile modulus, the greater the rigidity and hardness of the adhesive 14, and the lower the tensile modulus, the better the flexibility and elasticity of the adhesive 14. Taking filling with two adhesive materials 14 with different tensile moduli as an example, one adhesive material 14 has a stronger bonding ability with the substrate layer 12, and the other adhesive material 14 has a stronger bonding ability with the second protective layer 13. The two adhesive materials 14 are bonded to each other in the recessed structure 121, so that the substrate layer 12 is connected to the second protective layer 13 through the adhesive material 14.

[0033] Specifically, the support layer 1 may further include an adhesive layer 11 , the upper surface of the adhesive layer 11 is bonded to the lower surface of the display layer 3 , and the lower surface of the adhesive layer 11 is bonded to the upper surface of the substrate layer 12 .

[0034] It should be noted that the material of the adhesive layer 11 can be an optically clear adhesive (OCA) or a pressure sensitive adhesive (PSA). When the material of the adhesive layer 11 is PSA, the adhesive layer 11 dries quickly, has strong adhesion to the display layer 3 and the substrate layer 12, and has good leveling and transparency. When the material of the adhesive layer 11 is OCA, the adhesive layer 11 has high light transmittance, water resistance, high temperature resistance, and UV resistance, and will not cause yellowing, peeling, and deterioration after long-term use.

[0035] Specifically, the material of the substrate layer 12 is metal or carbon fiber.

[0036] When the substrate layer 12 is made of metal, the substrate layer 12 has a lower production cost. When the substrate layer 12 is made of carbon fiber, the substrate layer 12 has a lighter weight and higher rigidity.

[0037] Specifically, the recessed structure 121 includes at least one of a blind hole, a through groove, a through hole and a through slit. The blind hole and the through groove are arranged on the lower surface of the substrate layer, and the through hole and the through slit penetrate the substrate layer 12 in a direction from the lower surface to the upper surface of the substrate layer 12.

[0038] By providing the recessed structure 121 including at least one of a blind hole, a through groove, a through hole and a through seam, it is possible to facilitate the display module to withstand and release elastic force during the curling and sliding process, and further avoid the second protective layer 13 from peeling off under stress.

[0039] Specifically, when the recessed structure 121 includes a blind hole or a through hole, the blind hole or the through hole is staggered in a cross section parallel to the lower surface of the substrate layer and perpendicular to the curling axis of the display module, thereby improving the bonding strength of the adhesive 14 .

[0040] Specifically, the blind holes and the through holes are strip holes, and the length direction of the strip holes is parallel to the curling axis direction of the display module, and the extension direction of the through grooves and through slits is parallel to the curling axis direction of the display module.

[0041] When the recessed structure 121 includes a blind hole, Figure 2 As shown, a blind hole is provided in the substrate layer 12 , connecting the lower surface and the inner layer of the substrate layer 12 and not penetrating the substrate layer 12 along a direction parallel to the curling axis direction of the display module.

[0042] When the recessed structure 121 includes a through groove, Figure 3 As shown, a through groove completely penetrating the substrate layer 12 is opened on the lower surface of the substrate layer 12 in a direction parallel to the curling axis direction of the display module, and the through groove connects the lower surface and the inner layer of the substrate layer 12 in the substrate layer 12 .

[0043] When the recessed structure 121 includes a through hole, Figure 4 As shown, a through hole is provided in the substrate layer 12 which penetrates the lower surface and the upper surface of the substrate layer 12 and does not penetrate the substrate layer 12 along a direction parallel to the rolling axis direction of the display module.

[0044] When the recessed structure 121 includes a through seam, Figure 5 As shown, a through seam that completely penetrates the substrate layer 12 is opened on the lower surface of the substrate layer 12 in a direction parallel to the curling axis direction of the display module, and the through seam penetrates the lower surface and the upper surface of the substrate layer 12.

[0045] Specifically, the recessed structure 121 may be as follows Figure 6 As shown, the concave structure 121 gradually decreases in a direction from the upper surface of the substrate layer 12 to the lower surface of the substrate layer 12 on a cross section perpendicular to the lower surface of the substrate layer 12 and parallel to the rolling axis of the display module.

[0046] Specifically, along the direction from the lower surface to the upper surface of the substrate layer 12, the ratio of the depth of the blind hole to the thickness of the substrate layer 12 is in the range of [0.25, 0.75], and the ratio of the depth of the through groove to the thickness of the substrate layer 12 is in the range of [0.25, 0.75].

[0047] For example, the ratio of the depth of the blind hole to the thickness of the substrate layer 12 can be 0.5, and the ratio of the depth of the through groove to the thickness of the substrate layer 12 can be 0.5 through the half-engraving process. By controlling the depth of the blind hole and the depth of the through groove, more adhesive material 14 can be accommodated while improving the structural strength to ensure the bonding strength between the substrate layer 12 and the second protective layer 13.

[0048] Specifically, on the lower surface of the substrate layer 12, the width of the blind holes, through slots, through holes and through slits ranges from [0.2mm, 10mm], wherein the width direction of the blind holes and through holes is perpendicular to the length direction, and the width direction of the through slots and through slits is perpendicular to the extension direction.

[0049] It should be noted that the at least one blind hole, through groove, through hole and / or through seam included in the recessed structure 121 has the same width on the lower surface of the substrate layer 12 , so that the curing effect of the adhesive 14 in the recessed structure 121 can be uniform.

[0050] Specifically, the adhesive material 14 includes at least one of silicone rubber, thermoplastic polyurethane rubber (TPU) or polyimide adhesive (PI).

[0051] It should be noted that the at least two adhesive materials 14 with different tensile moduli in the recessed structure 121 can be made of the same material or different materials, as long as the tensile moduli are different. Furthermore, the adhesive material 14 near the upper surface of the substrate layer 12 has a higher adhesion to the substrate layer 12, and the adhesive material 14 near the lower surface of the substrate layer 12 has a higher adhesion to the second protective layer 13.

[0052] Specifically, the second protective layer 13 is made of organic material, which can improve weather resistance, enhance adhesion, and be waterproof and oil-proof, and can also improve leveling properties.

[0053] Figure 7 is a cross-sectional view of a support layer including a first adhesive material and a second adhesive material according to an embodiment of the present application. Figure 7 As shown, a first adhesive material 141 is disposed on the lower surface of the substrate layer 12 , a portion of the first adhesive material 141 is filled into the recessed structure 121 , and the recessed structure is filled with a second adhesive material 142 , the second adhesive material 142 is located between the first adhesive material 141 and the adhesive layer 11 , and the second protective layer 13 is bonded to the first adhesive material 141 .

[0054] In the production process, the second adhesive material 142 is first filled in the recessed structure 121. After the second adhesive material 142 solidifies, the first adhesive material 141 is further filled. Since the volume of the adhesive material decreases after solidifying from liquid to solid, if the first adhesive material 141 is not filled in sufficient amount, there will be a gap between the first adhesive material 141 and the second protective layer 13 after solidification. During the curling process of the display module, bubbles will be squeezed, making the second protective layer 13 easy to peel off. Therefore, the first adhesive material 141 is usually filled in excess. However, excessive filling of the first adhesive material 141 will result in a gap between the part of the lower surface of the substrate layer 12 that is not filled with the first adhesive material 141 and the second protective layer 13. For this reason, the first adhesive material 141 is further used to cover the lower surface of the substrate layer 12, thereby improving the flatness of the lower surface of the substrate layer 12 after filling with the first adhesive material 141, thereby facilitating the bonding with the second protective layer 13.

[0055] Specifically, the plane where the surface of the first adhesive 141 and the second protective layer 13 are bonded is parallel to the plane where the lower surface of the substrate layer 12 is bonded.

[0056] By setting the plane where the first adhesive 141 and the second protective layer 13 are bonded to be parallel to the plane where the lower surface of the substrate layer 12 is located, the flatness of the lower surface of the substrate layer 12 after filling with the first adhesive 141 can be further improved to improve the bonding strength between the substrate layer 12 and the second protective layer 13.

[0057] Specifically, at least one of the first adhesive material 141 , the second adhesive material 142 and the second protective layer 13 is opaque.

[0058] Since the display layer 3 in the display module needs to emit light outward through the first protective layer 2, if the supporting layer 1 is light-transmitting, part of the light will pass through the supporting layer 1, resulting in a poor display effect. Therefore, by setting at least one of the first adhesive 141, the second adhesive 142 and the second protective layer 13 to be light-impermeable, and since the substrate layer 12 itself is light-impermeable, it is possible to prevent the light of the display layer 3 from passing through the supporting layer 1, thereby improving the display effect.

[0059] Specifically, the tensile modulus of the adhesive material 14 is less than 10 GPa, and the tensile modulus of the first adhesive material 141 is greater than the tensile modulus of the second adhesive material 142 , so as to achieve a better bonding effect on the substrate layer 12 and the second protective layer 13 .

[0060] In the embodiment of the present application, a recessed structure 121 is provided on the support layer 1, and at least two adhesives 14 with different tensile moduli are filled in the recessed structure 121. This can improve the bonding effect between the substrate layer 12 and the second protective layer 13, and prevent the second protective layer 13 from peeling off under stress when the display module curls.

[0061] The present application also provides a sliding and curling display device, comprising the display module provided by the above embodiment. The display device has the advantages of the display module in the above embodiment, so it will not be described in detail here.

[0062] It should be noted that the display device can be any device that displays whether it is moving (e.g., video) or fixed (e.g., still image) and whether it is text or image. More specifically, it is contemplated that the embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controls and / or displays, displays of camera views (e.g., displays of rear-view cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0063] The above embodiments of the present application may complement each other if no conflict occurs.

[0064] Although the present application has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art based on reading and understanding of this specification and the accompanying drawings. The present application includes all such modifications and variations and is limited only by the scope of the appended claims. In particular, with respect to the various functions performed by the above-mentioned components, the terms used to describe such components are intended to correspond to any component (unless otherwise indicated) that performs the specified function of the component (e.g., it is functionally equivalent), even if it is not structurally equivalent to the disclosed structure that performs the functions in the exemplary implementation of the present specification shown herein.

[0065] That is, the above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] In order to enable any technician in the field to implement and use the application, the application provides the above description. In the above description, various details are listed for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that the application can also be implemented without using these specific details. In other embodiments, the well-known process will not be elaborated in detail to avoid unnecessary details that make the description of the application obscure. Therefore, the application is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the application.

[0068] It should be noted that, under the premise of no conflict, the various embodiments and / or the technical features in the various embodiments described in this application can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the protection scope of this application.

[0069] It should be understood that the specific examples in the embodiments of the present application are only to help those skilled in the art better understand the embodiments of the present application, rather than to limit the scope of the embodiments of the present application. Those skilled in the art can make various improvements and modifications based on the above embodiments, and these improvements or modifications all fall within the scope of protection of the present application. The above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A display module, characterized in that: include: A support layer, a first protective layer and a display layer, wherein the upper surface of the display layer is bonded to the lower surface of the first protective layer; The support layer includes a substrate layer and a second protective layer, the lower surface of the substrate layer is bonded to the upper surface of the second protective layer, and the display layer is arranged above the substrate layer; The support layer is provided with a recessed structure, the recessed structure is filled with at least two adhesive materials with different tensile moduli, and the substrate layer is connected to the second protective layer through the adhesive materials.

2. The display module according to claim 1, characterized in that: The support layer also includes a glue layer; The upper surface of the adhesive layer is bonded to the lower surface of the display layer, and the lower surface of the adhesive layer is bonded to the upper surface of the substrate layer.

3. The display module according to claim 1, characterized in that: The material of the substrate layer is metal or carbon fiber.

4. The display module according to claim 1, characterized in that: The recessed structure includes at least one of a blind hole, a through groove, a through hole and a through slit, wherein the blind hole and the through groove are arranged on the lower surface of the substrate layer, and the through hole and the through slit penetrate the substrate layer in a direction from the lower surface to the upper surface of the substrate layer.

5. The display module according to claim 4, characterized in that: The recessed structure gradually decreases in a direction from the upper surface of the substrate layer to the lower surface of the substrate layer on a cross section perpendicular to the lower surface of the substrate layer and parallel to the curling axis direction of the display module.

6. The display module according to claim 4, characterized in that: The recessed structure includes the blind hole or the through hole, and the blind hole or the through hole is staggeredly arranged in a direction perpendicular to the curling axis of the display module on a cross section parallel to the lower surface of the substrate layer.

7. The display module according to claim 6, characterized in that: The blind holes and the through holes are strip holes, and the length direction of the strip holes is parallel to the curling axis direction of the display module; the extension direction of the through grooves and the through slits is parallel to the curling axis direction of the display module.

8. The display module according to claim 4, characterized in that: Along the direction from the lower surface to the upper surface of the substrate layer, the ratio of the depth of the blind hole to the thickness of the substrate layer is in the range of [0.25, 0.75], and the ratio of the depth of the through groove to the thickness of the substrate layer is in the range of [0.25, 0.75].

9. The display module according to claim 7, characterized in that: On the lower surface of the substrate layer, the widths of the blind holes, the through grooves, the through holes and the through slits are in the range of [0.2 mm, 10 mm], wherein the width directions of the blind holes and the through holes are perpendicular to the length direction, and the width directions of the through grooves and the through slits are perpendicular to the extension direction.

10. The display module according to claim 2, characterized in that: A first adhesive material is disposed on the lower surface of the substrate layer, a portion of the first adhesive material is filled into the recessed structure, and a second adhesive material is filled into the recessed structure, and the second adhesive material is located between the first adhesive material and the adhesive layer; The second protective layer is bonded to the first adhesive material; Preferably, the second protective layer is made of organic material; Preferably, the plane where the surface of the first adhesive material and the second protective layer are bonded is parallel to the plane where the lower surface of the substrate layer is located; Preferably, at least one of the first adhesive material, the second adhesive material and the second protective layer is opaque.

11. The display module according to claim 10, characterized in that: The adhesive material includes at least one of silicone rubber, thermoplastic polyurethane rubber or polyimide adhesive; Preferably, the tensile modulus of the adhesive material is less than 10 GPa, and the tensile modulus of the first adhesive material is less than the tensile modulus of the second adhesive material.

12. A sliding and curling display device, comprising the display module as claimed in any one of claims 1 to 11.

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