Buffer structure and display device

Abstract

The invention discloses a buffer structure and a display device, the buffer structure comprises at least one buffer unit, the buffer unit comprises a buffer layer and a plurality of elastic support structures which are embedded in the buffer layer and are arranged at intervals, each elastic support structure penetrates from a first surface to a second surface, the first surface and the second surface are opposite surfaces of the buffer layer, and the buffer layer is arranged on the buffer layer. The rebound rate of the elastic supporting structure is larger than that of the buffer layer. The buffer structure can effectively absorb the falling stress in the falling process of the whole machine and reduce the external stress impact on the screen body of the whole machine, thereby greatly improving the yield of the screen body of the whole machine.

Description

Technical Field

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

[0002] In the prior art, the buffer structure of the whole machine adopts a flexible composite material (combination of PSA+Foam+PSA), and the flexible composite material is combined with the module by bonding.

[0003] When the whole machine falls, the whole machine will receive a large external impact force during the falling process. Since the above-mentioned buffer structure of the existing whole machine cannot effectively absorb the falling stress, the screen of the whole machine will be subjected to a greater falling impact force, causing the screen to fail.

[0004] Therefore, a new buffer structure is urgently needed to at least solve the technical problem that the buffer structure in the prior art cannot effectively absorb the falling stress. Summary of the invention

[0005] The present application provides a buffer structure and a display screen to solve the problem that the buffer structure in the related art cannot effectively absorb the falling stress.

[0006] According to one aspect of the present application, a buffer structure is provided, comprising at least one buffer unit, the buffer unit comprising a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals, and each elastic support structure extends from a first surface to a second surface, the first surface and the second surface are relative surfaces of the buffer layer, and the rebound rate of the elastic support structure is greater than the rebound rate of the buffer layer.

[0007] According to another aspect of the present application, a display device is provided, including a display panel and the buffer structure as described above, wherein the buffer structure is located on a side away from the display panel.

[0008] In the buffer structure provided in the embodiment of the present application, the buffer structure includes at least one buffer unit, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals. In addition, each elastic support structure runs from the first surface of the buffer layer to the second surface of the buffer layer, and the first surface and the second surface are relative surfaces of the buffer layer. In addition, the resilience of the elastic support structure is greater than the resilience of the buffer layer. It can be seen that since the resilience of the elastic support structure is greater than the resilience of the buffer layer, the elastic support structure has better elastic recovery ability than the buffer layer. In addition, the plurality of elastic support structures are arranged at intervals in the buffer layer, so that when the buffer structure is subjected to external impact, the elastic support structure of the buffer structure can more effectively absorb and disperse stress and reduce stress concentration, so that for the whole machine having the buffer structure of the present application, the buffer structure of the present application reduces the risk of damage to the screen of the whole machine and the risk of damage to the protected components of the whole machine. In addition, the plurality of elastic support structures can also enhance the stability of the entire buffer structure. When subjected to external impact, the buffer structure of the present application can also prevent the buffer layer from being compressed or deformed as a whole, so that the buffer structure still maintains its original form and buffering performance under multiple impacts. In summary, the buffer structure of the present application can effectively absorb the falling stress of the whole machine during the falling process, reduce the external stress impact on the screen of the whole machine, and thus greatly improve the screen yield of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0010] Figure 1 It is a schematic diagram of a cross-sectional structure of a display device provided according to the prior art;

[0011] Figure 2 is a top view of a buffer structure provided according to an embodiment of the present application;

[0012] Figure 3 is a schematic cross-sectional structure diagram of a buffer structure with multiple buffer areas provided according to an embodiment of the present application;

[0013] Figure 4 yes Figure 3 A top view of multiple buffer regions of the buffer structure shown in FIG.

[0014] Figure 5 is a schematic cross-sectional structural diagram of a buffer structure having a buffer unit provided according to the first embodiment of the present application;

[0015] Figure 6is a schematic cross-sectional structural diagram of a buffer structure having a plurality of buffer units provided according to a second embodiment of the present application;

[0016] Figure 7 is a schematic cross-sectional structure diagram of a display device provided according to an embodiment of the present application;

[0017] Figure 8 It is a schematic diagram of a display device provided in an embodiment of the present application.

[0018] The above drawings include the following reference numerals:

[0019] 10. Support layer; 20. Flexible composite material layer; 201. First pressure-sensitive adhesive layer; 202. Foam material layer; 203. Second pressure-sensitive adhesive layer; 30. Display layer; 40. Functional layer; 50. Cover layer;

[0020] 200, buffer structure; 210, buffer layer; 220, elastic support structure; 230, buffer area; 231, buffer part; 240, buffer unit; 1, display device; 2, display panel. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution 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. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Figure 1Schematic diagram of a cross-sectional structure of a display device in the prior art. Figure 1 The display device in the prior art generally comprises a cover layer 50, a functional layer 40, a display layer 30, a flexible composite material layer 20 and a support layer 10 which are stacked in sequence. Optionally, the display layer 30 comprises a touch layer.

[0025] Specifically, Figure 1 As shown, the cover layer 50 may be a Cover component, the functional layer 40 may be an optically clear adhesive (OCA), the display layer 30 may be an OLED, the flexible composite material layer 20 may be a first pressure-sensitive adhesive layer 201 (PSA), a foam material layer 202 (Foam) and a second pressure-sensitive adhesive layer 203 (PSA) stacked, and the support layer corresponds to a SUS gasket. Optionally, the display layer 30 includes a touch layer.

[0026] As described in the background technology, the buffer structure in the prior art adopts a flexible composite material (PSA+Foam+PSA combination), and the flexible composite material layer is combined with the module by bonding. It is further explained that the above-mentioned flexible composite material layer includes three film layers stacked, namely a single PSA, a single Foam and a single PSA. In the case that the whole machine falls, the whole machine will receive a large external impact force during the falling process. Since the above-mentioned buffer structure of the existing whole machine cannot absorb the falling stress, the screen of the whole machine will be subjected to a greater falling impact force, causing the screen to fail.

[0027] Based on this, the present application provides a buffer structure and a display screen in order to solve the technical problem that the buffer structure in the prior art cannot effectively absorb the falling stress.

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] According to the embodiments of the present application, Figure 2As shown, a buffer structure 200 is provided, comprising: a buffer unit (not shown in the figure) or a plurality of buffer units. Each buffer unit comprises a buffer layer 210 and an elastic support structure 220, and the resilience of the elastic support structure 220 is greater than the resilience of the buffer layer 210. Further, for any buffer unit, the number of the elastic support structures 220 is multiple, and the multiple elastic support structures 220 are respectively embedded in the buffer layer 210, and the multiple elastic support structures 220 are arranged at intervals in the buffer layer 210. It should also be noted that any elastic support structure 220 in any buffer unit penetrates from the first surface of the buffer layer 210 to the second surface of the buffer layer 210, and the first surface and the second surface are relative surfaces of the buffer layer 210.

[0030] Specifically, when the buffer structure includes a plurality of buffer units, the plurality of buffer units may be stacked.

[0031] Specifically, the buffer layer can be made of a high-density foam material, such as polyurethane foam and polystyrene foam, which will deform under high-energy impact to absorb and disperse part of the impact force. The buffer layer is an integrally formed structure.

[0032] Specifically, the elastic support structure can be made of pressure-sensitive adhesive, so that the elastic support structure has a higher rebound rate than the buffer layer, and can quickly restore its shape after being impacted, thereby providing additional support and protection on the basis of the buffer layer.

[0033] Specifically, the shapes and sizes of the multiple elastic support structures embedded in the same buffer layer may be the same or different.

[0034] For example, the elastic support structure may be in various shapes, such as cylindrical, trapezoidal, wedge-shaped, honeycomb, or other specific geometric patterns.

[0035] Specifically, for any elastic support structure in any buffer unit, the elastic support structure penetrates from the first surface of the buffer layer to the second surface of the buffer layer, which means that the height of the elastic support structure is consistent with the thickness of the buffer layer, and the upper surface of the elastic support structure in the height direction is flush with the first surface of the buffer layer, and the lower surface of the elastic support structure in the height direction is flush with the second surface of the buffer layer; or, the upper surface of the elastic support structure in the height direction is flush with the second surface of the buffer layer, and the lower surface of the elastic support structure in the height direction is flush with the first surface of the buffer layer. It can be understood that this penetration design can improve the stability and connectivity of the elastic support structure in the entire buffer layer, so that the buffer structure can maintain good protection efficiency even in extreme bending or folding states.

[0036] In addition, for the multiple elastic support structures in the multiple buffer units, the shapes of any two of the multiple elastic support structures can be the same or different. In some optional embodiments, in order to adapt the buffer structure to the specific needs of different devices and screens, the shapes and sizes of the multiple elastic support structures can be fine-tuned to reduce creases and improve stress absorption during folding.

[0037] Specifically, in the step of forming the above-mentioned buffer structure, the Foam material with suitable density and resilience can be first selected according to the screen size, thickness and expected drop level. Then, the Foam material can be processed into a predetermined structure to form a buffer layer using high-precision laser cutting technology, wherein the buffer layer can have multiple through holes. After that, the high-resilience PSA can be accurately filled into the above-mentioned multiple through holes of the buffer layer through a dispensing process, wherein, in order to make the PSA evenly distributed and tightly fit in the Foam material, the structure filled with a centrifuge can be processed (the centrifuge helps PSA to evenly fill multiple through holes, eliminate bubbles, and make the parts seamlessly connected to form an elastic support structure embedded in the buffer layer, thereby improving the integrity and reliability of the overall structure of the buffer structure).

[0038] It is understandable that, since the resilience of the elastic support structure is greater than that of the buffer layer, the elastic support structure has better elastic recovery ability than the buffer layer. In addition, multiple elastic support structures are arranged at intervals in the buffer layer, so that when the buffer structure is subjected to external impact, the elastic support structure of the buffer structure can more effectively absorb and disperse stress and reduce stress concentration. Therefore, for the whole machine with the buffer structure of the present application, the buffer structure of the present application reduces the risk of damage to the screen of the whole machine and the risk of damage to the protected components of the whole machine. In addition, multiple elastic support structures can also enhance the stability of the entire buffer structure. When subjected to external impact, the buffer structure of the present application can also prevent the buffer layer from being compressed or deformed as a whole, so that the buffer structure can still maintain its original shape and buffering performance under multiple impacts.

[0039] In summary, the buffer structure of the present application can effectively absorb the falling stress of the whole machine during the falling process, reduce the external stress impact on the screen of the whole machine, and thus greatly improve the screen yield of the whole machine.

[0040] In some optional embodiments, in order to provide additional support to the buffer structure so that the buffer structure provides excellent impact resistance while ensuring the screen flexibility of the display device, the buffer structure further includes a gasket layer. Specifically, the gasket layer can be located on one side of the buffer structure, and in order to bond the gasket layer to the buffer structure, the bonding layer can be located between the buffer layer and the gasket layer of the buffer structure.

[0041] Specifically, the material of the adhesive layer can be a pressure sensitive adhesive (PSA). This colloid not only has good adhesion, but also can quickly restore its shape when subjected to impact force, that is, has a high rebound rate, so that on the basis of bonding the gasket layer used to provide support force to one side of the buffer structure, it can also provide additional stress dispersion effect, further improving the drop protection capability of the buffer structure.

[0042] Specifically, the material of the gasket layer can be a stainless steel (SUS) plate. It can be understood that the hardness and stability of the SUS plate can provide additional support for the buffer layer.

[0043] After the pressure-sensitive adhesive is filled into the through hole of the buffer layer to form an elastic support structure embedded in the buffer layer, the structure including the buffer layer and the elastic support structure is the buffer structure. Based on this, the formation process of the buffer structure of this embodiment also includes: using an adhesive material (exemplarily, the adhesive material is a pressure-sensitive adhesive) to bond the buffer structure to the SUS board. At this time, the adhesive material between the buffer structure and the SUS board forms an adhesive layer.

[0044] It should be noted in this embodiment that, when the buffer structure includes multiple buffer units, the gasket layer is the gasket layer of multiple buffer units, that is, the gasket layer is located on the same side of the multiple buffer units. Thus, the bonding layer is located between the gasket layer and the buffer layer of a buffer unit in contact with the gasket layer.

[0045] In summary, a buffer structure provided in this embodiment includes at least one buffer unit and a gasket layer, and the gasket layer is located on the same side of at least one buffer unit. Wherein, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and spaced apart. Moreover, each elastic support structure extends from the first surface of the buffer layer to the second surface of the buffer layer, and the first surface and the second surface are relative surfaces of the buffer layer. In addition, in order to enhance the structural integrity of the gasket layer and the buffer unit, the above-mentioned buffer structure also includes an adhesive layer, which is located between the gasket layer and the buffer layer of at least one buffer unit. It cannot be ignored that the rebound rate of the elastic support structure is greater than the rebound rate of the buffer layer. It can be seen that the buffer structure in this embodiment not only effectively absorbs the falling stress during the falling process of the whole machine, but also provides good supporting force, so that the whole machine has more excellent impact resistance.

[0046] In some optional embodiments, for at least one buffer unit, when multiple elastic support structures embedded in a buffer layer of the buffer unit are arranged at intervals, in order to enable the multiple elastic support structures to absorb impact stress more evenly, the distribution of the multiple elastic support structures in the above-mentioned buffer layer can be an array distribution.

[0047] More specifically, for at least one buffer unit, a plurality of elastic support structures are embedded in the buffer layer in certain rows and columns, so that the plurality of elastic support structures form a grid-like distribution layout on one side surface of the buffer layer. Exemplarily, the above distribution layout can be circular, square, rectangular, diamond or other shapes, and its purpose is to enable each area in the buffer layer to have the protection of at least one or more elastic support structures, thereby avoiding local stress concentration and improving the overall impact resistance.

[0048] In addition, the shapes of the plurality of elastic supporting structures distributed in an array may be the same or different.

[0049] Wherein, in the case where there are multiple buffer units, the multiple elastic support structures of at least one buffer unit among the multiple buffer units are distributed in the buffer layer in an array.

[0050] Exemplarily, a buffer structure includes at least one buffer unit, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in an array distribution manner, each elastic support structure extends from a first surface of the buffer layer to a second surface of the buffer layer, the first surface and the second surface are relative surfaces of the same buffer layer, and the rebound rate of the elastic support structure is greater than the rebound rate of the buffer layer.

[0051] Exemplarily, a buffer structure includes at least one buffer unit and a gasket layer, and the gasket layer is located on the same side of at least one buffer unit. Each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and spaced apart, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in an array distribution manner. Moreover, each elastic support structure extends from the first surface of the buffer layer to the second surface of the buffer layer, and the first surface and the second surface are relative surfaces of the buffer layer. In addition, in order to enhance the structural integrity of the gasket layer and the buffer unit, the above-mentioned buffer structure also includes an adhesive layer, which is located between the gasket layer and the buffer layer of at least one buffer unit. It cannot be ignored that the resilience of the elastic support structure is greater than the resilience of the buffer layer.

[0052] It can be understood that while the buffer structure can effectively absorb the falling stress of the whole machine during the fall process through the elastic support structure, and provides good supporting force through the gasket layer, so that the whole machine has more excellent impact resistance, this embodiment embeds multiple elastic support structures in at least one buffer unit in the buffer layer in an array distribution manner. Then, in the actual application of the buffer structure, when the buffer structure is dropped or collided, these multiple elastic support structures distributed in the array can form a uniformly distributed "protective net" to disperse the external impact force to the entire buffer layer, rather than concentrating it on a certain point in the buffer layer, thereby significantly reducing the risk of damage to the display screen with the buffer structure due to excessive local stress.

[0053] In other optional embodiments, such as Figure 2 As shown, for at least one buffer unit, when a plurality of elastic support structures 220 embedded in a buffer layer 210 of the buffer unit are arranged at intervals, in order to enable the plurality of elastic support structures 220 in the buffer unit to absorb impact stress more evenly, the distribution of the plurality of elastic support structures 220 in the buffer layer 210 of the buffer unit may be a nested distribution.

[0054] More intuitively, Figure 2 As shown, for the buffer layer 210 of at least one buffer unit, a plurality of elastic support structures 220 are distributed in a circle-by-circle nested pattern within the plane of the buffer layer 210 .

[0055] Exemplarily, the respective layouts corresponding to the above-mentioned nested distributions may be circular nesting, square nesting, rectangular nesting, diamond nesting or nesting of other shapes, with the purpose of forming a denser layer that can provide additional protection by increasing the density of the elastic support structure or changing its arrangement at certain key positions or high stress concentration points of the buffer layer.

[0056] Of course, the shapes of the multiple nested elastic supporting structures can be the same or different.

[0057] Wherein, in the case where there are multiple buffer units, the multiple elastic support structures of at least one buffer unit among the multiple buffer units are nested and distributed in the buffer layer.

[0058] In addition, in the case where there are multiple buffer units, when the multiple elastic support structures of at least one buffer unit among the multiple buffer units are nested and distributed in the buffer layer, the multiple elastic support structures of at least one buffer unit among the remaining at least one buffer unit are distributed in an array in the buffer layer.

[0059] Exemplarily, a buffer structure includes at least one buffer unit, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and spaced apart, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in a nested distribution manner, each elastic support structure extends from the first surface of the buffer layer to the second surface of the buffer layer, the first surface and the second surface are opposite surfaces of the same buffer layer, and the resilience of the elastic support structure is greater than the resilience of the buffer layer. Furthermore, in the case where the buffer structure includes a plurality of buffer units, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in a nested distribution manner, the plurality of elastic support structures of the remaining at least one buffer unit are embedded in the buffer layer in an array distribution manner.

[0060] Exemplarily, a buffer structure includes at least one buffer unit and a gasket layer, and the gasket layer is located on the same side of at least one buffer unit. Wherein, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and spaced apart, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in a nested distribution manner. Moreover, each elastic support structure runs from the first surface of the buffer layer to the second surface of the buffer layer, and the first surface and the second surface are relative surfaces of the buffer layer. In addition, in order to enhance the structural integrity of the gasket layer and the buffer unit, the above-mentioned buffer structure also includes an adhesive layer, which is located between the gasket layer and the buffer layer of at least one buffer unit. It cannot be ignored that the resilience of the elastic support structure is greater than the resilience of the buffer layer. Further, in the case where the buffer unit of the buffer structure includes a plurality of buffer units, and the plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in a nested distribution manner, the remaining plurality of elastic support structures of at least one buffer unit are embedded in the buffer layer in an array distribution manner.

[0061] In the above-mentioned embodiment, the through-design of the elastic support structure enables the elastic support structure to effectively respond to impacts within the entire thickness range from the first surface to the second surface of the buffer layer. This means that no matter from which direction the impact force acts on the screen of the display screen, the elastic support structure can absorb and disperse stress in the direction perpendicular to the first surface of the buffer layer, thereby improving the impact resistance. Furthermore, the nested distribution pattern of multiple elastic support structures in this embodiment can form a multi-level "protective net" in the plane of the buffer layer, which can disperse stress more evenly by increasing the density of the elastic support structure in areas where the impact force is more concentrated, thereby avoiding stress concentration and reducing the risk of damage to the screen. In addition, for flexible folding screens, the nested distribution pattern can also adapt to the folding characteristics of the screen, so that even if the screen is deformed in the bent area, the elastic support structure can still be evenly distributed in the buffer layer, thereby providing stable and continuous stress absorption to protect the screen from damage.

[0062] In some optional embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, a buffer structure 200 includes at least one buffer unit 240, the buffer unit 240 includes a buffer layer 210 and a plurality of elastic support structures 220 embedded in the buffer layer 210 and arranged at intervals, and each elastic support structure 220 penetrates from the first surface of the buffer layer 210 to the second surface of the buffer layer 210, the first surface and the second surface are opposite surfaces of the same buffer layer 210, and the resilience of the elastic support structure 220 is greater than the resilience of the buffer layer 210. On this basis, if the buffer structure 200 includes a buffer unit 240, then the buffer structure 200 is a buffer unit 240. At this time, the buffer structure 200 has a plurality of buffer regions 230 adjacently arranged in the first direction A, each buffer region 230 includes a plurality of buffer portions 231 and an elastic support structure 220 located between any two adjacent buffer portions 231, and any two buffer regions 230 constitute a double rotationally symmetrical structure, and the first direction is parallel to the first surface.

[0063] In other optional embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, a buffer structure 200 includes at least one buffer unit 240, the buffer unit 240 includes a buffer layer 210 and a plurality of elastic support structures 220 embedded in the buffer layer 210 and arranged at intervals, and each elastic support structure 220 penetrates from the first surface of the buffer layer 210 to the second surface of the buffer layer 210, the first surface and the second surface are opposite surfaces of the same buffer layer 210, and the resilience of the elastic support structure 220 is greater than the resilience of the buffer layer 210. On this basis, if the buffer structure 200 includes a plurality of buffer units 240, at least one buffer unit 240 has a plurality of buffer regions 230 adjacently arranged in the first direction, each buffer region 230 includes a plurality of buffer portions 231 and an elastic support structure 220 located between any two adjacent buffer portions 231, and any two buffer regions 230 constitute a double rotationally symmetrical structure, and the first direction is parallel to the first surface.

[0064] Specifically, Figure 3 As shown, for the buffer structure 200 having the above-mentioned multiple buffer regions 230, any two buffer regions 230 adjacently arranged in the first direction have a common edge. Moreover, one of the buffer regions 230 having a common edge completely overlaps with the other buffer region 230 after rotating 180 degrees about the midpoint of the common edge, so that any two adjacent buffer structures 200 constitute a double rotationally symmetrical structure.

[0065] It should be noted that if Figure 3 , Figure 4 and Figure 5 (or Figure 6 ), the buffer layer 210 in at least one buffer unit 240 in the buffer structure 200 is composed of a plurality of buffer parts 231 , and an elastic support structure 220 is provided between any two buffer parts 231 .

[0066] In the above embodiment, by adopting a double rotationally symmetrical buffer structure, the stress distribution of the display screen having the buffer structure can be more uniform when the screen encounters a front or back impact, thereby reducing the risk of damage caused by local stress concentration.

[0067] It can be understood that after the multiple buffer areas in the buffer structure are separated separately, each buffer area can be considered as a buffer unit, and the buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals, and each elastic support structure extends from the first surface of the buffer layer to the second surface of the buffer layer, the first surface and the second surface are relative surfaces of the buffer layer, and the rebound rate of the elastic support structure is greater than the rebound rate of the buffer layer.

[0068] In some optional embodiments, such as Figure 3 As shown, the cross section of the buffer region 230 parallel to the first direction A and the second direction B is trapezoidal, and the second direction is perpendicular to the first surface and the second surface of the buffer layer, that is, the first direction A is perpendicular to the second direction B.

[0069] It is understandable that if Figure 3 As shown, when the cross section of the buffer region 230 in the second direction is a trapezoid, the plurality of buffer regions 230 are connected in a chain along the second direction. At this time, the bottom side of one of the two adjacent trapezoids is flush with the top side of the other trapezoid, and the top side of one trapezoid is flush with the bottom side of the other trapezoid.

[0070] In the above implementation, if Figure 3 As shown, on the basis of any two adjacent buffer areas 230 forming a double rotationally symmetrical structure, by designing the cross-section of each buffer area 230 in the second direction to be trapezoidal, the multiple buffer areas 230 can be thought of as a mutually supporting buffer structure 200 in the second direction, so that in the event that a single buffer area 230 in the buffer structure 200 fails, the adjacent buffer areas 230 can continue to provide support, thereby maintaining the integrity of the buffer structure 200.

[0071] In some optional embodiments, such as Figure 3 , Figure 4 and Figure 6As shown, when the buffer structure 200 includes a plurality of buffer units 240 , any two adjacent layers of buffer units 240 are conformally stacked in the second direction B. The second direction B is the thickness direction of the buffer layer 210 .

[0072] Specifically, Figure 3 and Figure 6 As shown, by stacking multiple buffer units 240, a multi-level stress absorption mechanism can be formed at different depths of the buffer structure 200. That is, when the display device is impacted, the impact energy will not only be absorbed by the outermost buffer unit 240, but will also be further dispersed and absorbed by the internal multi-layer buffer units 240, thereby reducing the possibility of the impact energy directly reaching the screen body of the display device and reducing the risk of screen damage.

[0073] In some optional embodiments, such as Figure 3 and Figure 6 As shown, when the buffer structure 200 includes a plurality of buffer units 240 , the elastic support structures 220 in any two adjacent layers of buffer units 240 are staggered in a first direction, and the first direction is perpendicular to the second direction.

[0074] Specifically, Figure 6 As shown, by staggering the elastic support structures 220 in the buffer units 240 of adjacent layers, the structural stability of the entire buffer structure 200 can be enhanced. Even if the elastic support structure 220 of a certain layer is damaged under the action of external force, due to the staggered structures of adjacent layers, the ability to continue to share the stress, maintain the protection effect of the display screen of the display device, and prevent the structure from completely failing. In addition, for flexible folding screens, the staggered elastic support structures 220 can also better adapt to the bending and unfolding of the screen. It can be understood that since the multiple elastic support structures 220 between two adjacent layers of buffer units 240 are staggered in the first direction, the elastic support structures 220 of different layers can interact with each other when the screen is folded, thereby helping to reduce the additional stress generated when the screen is bent and protect the screen from damage.

[0075] Through the above embodiments, the buffer structure provided by the embodiment of the present application includes at least one buffer unit, each buffer unit includes a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals. In addition, each elastic support structure runs from the first surface of the buffer layer to the second surface of the buffer layer, and the first surface and the second surface are relative surfaces of the buffer layer. In addition, the resilience of the elastic support structure is greater than the resilience of the buffer layer. It can be seen that since the resilience of the elastic support structure is greater than the resilience of the buffer layer, the elastic support structure has better elastic recovery ability than the buffer layer. In addition, multiple elastic support structures are arranged at intervals in the buffer layer, so that when the buffer structure is subjected to external impact, the elastic support structure of the buffer structure can more effectively absorb and disperse stress and reduce stress concentration, so that for the whole machine with the buffer structure of the present application, the buffer structure of the present application reduces the risk of damage to the screen of the whole machine and the risk of damage to the protected components of the whole machine. In addition, multiple elastic support structures can also enhance the stability of the entire buffer structure. When subjected to external impact, the buffer structure of the present application can also prevent the buffer layer from being compressed or deformed as a whole, so that the buffer structure still maintains its original shape and buffering performance under multiple impacts. In summary, the buffer structure of the present application can effectively absorb the falling stress of the whole machine during the falling process, reduce the external stress impact on the screen of the whole machine, and thus greatly improve the screen yield of the whole machine.

[0076] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0077] According to an embodiment of the present application, a display device is further provided, comprising a display panel and any buffer structure provided in the above-mentioned embodiments, wherein the buffer structure is located on a side away from the display panel.

[0078] For example, Figure 7 As shown, the display device may include a stacked cover layer 50, a functional layer 40, a display layer 30, a first adhesive layer (first pressure-sensitive adhesive layer 201) and a buffer structure 200, wherein the buffer structure 200 may include a buffer layer, a plurality of elastic support structures embedded in the buffer layer, a second adhesive layer (second pressure-sensitive adhesive layer 203) and a support layer 10. Optionally, the display layer includes a touch layer.

[0079] For example, the cover layer (Cover component) can adopt a material called "Ultra Thin Glass" (UTG), which is thinner, lighter, and more flexible than traditional glass, while retaining the hardness and transparency of glass, and is very suitable for protecting flexible display panels.

[0080] Exemplarily, the functional layer (optically clear adhesive, OCA) is used to tightly bond the cover layer to the display layer, so that the display screen of the display device has good structural integrity and display effect when folded.

[0081] Exemplarily, the display layer is an OLED display layer.

[0082] Exemplarily, the buffer structure is any of the above buffer structures. In addition, the buffer structure and the display layer may be bonded by a pressure sensitive adhesive (PSA).

[0083] Exemplarily, the supporting layer is a SUS gasket.

[0084] For example, Figure 8 As shown, the display device 1 includes the display panel 2 provided in the above embodiment. The display device 1 provided in the embodiment of the present application may be a mobile phone. The above display device may also be any electronic product with a display function, including but not limited to a laptop computer, a tablet computer, a digital camera, a television, a desktop display, a smart bracelet, smart glasses, a car display, an industrial control device, a medical display, a touch interactive terminal, etc., which is not specifically limited in the embodiment of the present application.

[0085] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0086] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A buffer structure, characterized in that: The invention comprises at least one buffer unit, wherein the buffer unit comprises a buffer layer and a plurality of elastic support structures embedded in the buffer layer and arranged at intervals, and each of the elastic support structures extends from a first surface to a second surface, the first surface and the second surface are opposite surfaces of the buffer layer, and the rebound rate of the elastic support structure is greater than the rebound rate of the buffer layer.

2. The buffer structure according to claim 1, characterized in that: It also includes an adhesive layer and a gasket layer, wherein the adhesive layer is located between the buffer layer and the gasket layer.

3. The buffer structure according to claim 1, characterized in that: A plurality of the elastic supporting structures are distributed in an array in the buffer layer.

4. The buffer structure according to claim 1, characterized in that: A plurality of the elastic supporting structures are nested and distributed in the buffer layer.

5. The buffer structure according to claim 1, characterized in that: The buffer structure has a plurality of buffer regions arranged adjacent to each other in the first direction, each of the buffer regions includes a plurality of buffer parts and the elastic support structure located between any two adjacent buffer parts, any two adjacent buffer regions constitute a double rotationally symmetrical structure, and the first direction is parallel to the first surface.

6. The buffer structure according to claim 5, characterized in that: A cross section of the buffer region in a second direction is trapezoidal, and the first direction is perpendicular to the second direction.

7. The buffer structure according to any one of claims 1 to 6, characterized in that: Any two adjacent layers of the buffer units are conformally stacked in a second direction, and the second direction is the thickness direction of the buffer layer.

8. The buffer structure according to claim 7, characterized in that: The elastic supporting structures in any two adjacent layers of the buffer units are staggered in a first direction, and the first direction is perpendicular to the second direction.

9. The buffer structure according to any one of claims 1 to 6, characterized in that: The material of the elastic supporting structure is pressure-sensitive adhesive.

10. A display device, characterized in that: include: Display panel; The buffer structure according to any one of claims 1 to 9, wherein the buffer structure is located on a side away from the display panel.

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