Supporting assembly and display device

Abstract

The embodiment of the invention provides a supporting assembly and a display device, the supporting assembly comprises a supporting layer, the supporting layer is provided with a plurality of first buffer grooves, the first buffer grooves are located in a bending area, the first buffer grooves are arranged at intervals, and the supporting layer is provided with a supporting surface used for supporting a flexible display screen; the first assembly is arranged on the supporting surface and located in the main body area; the connecting piece is arranged on the side where the supporting face is located, and the connecting piece is located in the bending area; the elastic modulus of the connecting piece is larger than that of the first assembly. The use performance of the display device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a support assembly and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, power saving, thin body, and wide range of applications, becoming the mainstream display device.

[0003] However, the performance of current OLED display devices needs to be improved. Summary of the Invention

[0004] The embodiments of the present application provide a support assembly and a display device, aiming to improve the performance of an OLED display device.

[0005] An embodiment of the first aspect of the present application provides a support assembly for supporting a flexible display screen, wherein the support assembly includes a bending region and a main body region located on at least one side of the bending region, and is characterized in that the support assembly includes:

[0006] A supporting layer, wherein the supporting layer has a plurality of first buffer grooves, wherein the first buffer grooves are at least partially located in the bending zone, the plurality of first buffer grooves are arranged at intervals, and the supporting layer has a supporting surface for supporting the flexible screen;

[0007] A first component is disposed on the support surface and located in the main body area;

[0008] A connecting member is provided on the side where the supporting surface is located, and the connecting member is located in the bending area; wherein the elastic modulus of the connecting member is greater than the elastic modulus of the first component.

[0009] According to the embodiment of the first aspect of the present application, the two main body areas are disposed on both sides of the bending area, and the first component includes a first adhesive member located on one of the two main body areas and a second adhesive member located on the other;

[0010] The gap between the first adhesive member and the second adhesive member is a first gap, and the connecting member is located in the first gap;

[0011] The support assembly has a folded state and an unfolded state. In the unfolded state, the two main body areas are located on opposite sides of the bending area in the first direction, and the size of the connecting member along the first direction is smaller than the size of the first gap along the first direction.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the first adhesive member has a first end face facing the connecting member, the second adhesive member has a second end face facing the connecting member, the gap between the connecting member and the first end face is a second gap, and the gap between the connecting member and the second end face is a third gap. In the expanded state, the size of the second gap along the first direction is the same as the size of the third gap along the first direction.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly has a folded state and an unfolded state. In the unfolded state, the dimension of the connecting member along the thickness direction of the support assembly is smaller than the dimension of the first adhesive member and / or the second adhesive member along the thickness direction of the support assembly.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the supporting component also includes a supporting film, which is used to be arranged on the side of the flexible display screen facing the supporting layer, and the first component and the connecting member are arranged on the same layer, and the first component and the connecting member are located between the supporting layer and the supporting film; the connecting member is fixed on the supporting surface, and the surface of the connecting member facing the supporting film is spaced apart from the supporting film.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly further includes a support film, the support film is configured to be disposed on a side of the flexible display screen facing the support layer, the first assembly and the connector are disposed on the same layer, and the first assembly and the connector are located between the support layer and the support film;

[0016] The connecting member is fixed to the surface of the supporting film facing the supporting layer, and the surface of the connecting member facing the supporting layer is spaced apart from the supporting layer.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction, and the support layer further has at least one groove, the orthographic projection of the groove along the thickness direction of the support assembly being located between the orthographic projections of two adjacent first buffer grooves in the second direction in the thickness direction of the support assembly.

[0018] Wherein, the groove and the first buffer groove are both located on the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction;

[0019] Alternatively, the groove and the first buffer groove are both located on a side of the support layer away from the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction;

[0020] Alternatively, the groove is located on a side of the supporting layer away from the supporting surface, and the first buffer groove is located on the supporting surface.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction, and the first buffer grooves are arranged through the thickness direction of the support assembly to form first buffer holes.

[0022] The support layer further has at least one groove, wherein the orthographic projection of the groove along the thickness direction of the support component is located between the orthographic projections of two adjacent first buffer holes in the second direction along the thickness direction of the support component;

[0023] The groove is provided on at least one side of the support layer along the thickness direction of the support component, and is communicated with or spaced apart from two adjacent first buffer holes along the second direction.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the groove is provided on a side of the supporting layer facing away from the supporting surface.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the groove is provided through the thickness direction of the support component to form a through hole, and the through hole is connected to the two adjacent first buffer holes along the second direction.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the plurality of first buffer slots are arranged in rows and columns along a first direction and a second direction, the first direction is a column direction, the second direction is a row direction, and the first direction intersects the second direction;

[0027] The plurality of first buffer grooves in each row of the first buffer grooves are arranged at intervals along the second direction, and the first buffer grooves in two adjacent rows in the expanded state are staggered along the first direction.

[0028] According to any of the aforementioned embodiments of the first aspect of the present application, a groove is provided between any two adjacent first buffer grooves along the second direction.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the support layer includes a solid portion located between the first buffer groove of the i-th column and the first buffer groove of the i+2-th column, and the groove is arranged in the solid portion. In the expanded state, the size of the solid portion along the first direction is B, and the size of the groove along the first direction is b, and b≤B1 / 2.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, in the expanded state, the dimension of the first buffer groove along the first direction is a1, and a1≤b.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, in the expanded state, the first buffer groove has a first segment and a second segment located at opposite ends of the first segment along the second direction, and the size of the first segment along the first direction is a2, a2≤b≤B / 2.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, in the expanded state, the dimension of the support layer along the thickness direction of the support component is H, the dimension of the groove along the thickness direction of the support component is h, and 1 / 3H<h<2 / 3H.

[0033] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the support layer includes at least one of titanium alloy, aluminum alloy, and stainless steel.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the connecting piece includes at least one or more of titanium alloy, aluminum alloy, stainless steel, rubber, silicone, polyurethane, polyimide or polycarbonate.

[0035] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first component includes optical adhesive or double-sided adhesive.

[0036] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly further includes a first protective layer, which is arranged on the side of the support layer facing away from the connecting member, and the first protective layer is located in the bending area and extends from the bending area to at least a portion of the main body area, and the first protective layer has at least one second buffer groove.

[0037] According to any of the aforementioned embodiments of the first aspect of the present application, the second buffer groove is located on a side of the first protective layer away from the supporting layer.

[0038] According to any of the aforementioned embodiments of the first aspect of the present application, the support assembly further includes a second protective layer, the second protective layer is arranged on a side of the first protective layer facing away from the support layer, and the orthographic projection of the second protective layer along the support assembly coincides with the orthographic projection of the first protective layer along the thickness direction of the support assembly.

[0039] The second protective layer has at least one third buffer groove, and the second buffer groove and the third buffer groove are staggered along the thickness direction of the support component.

[0040] A second aspect of the present application further provides a support assembly for supporting a flexible display screen, the support assembly comprising a bending region and a main body region located on at least one side of the bending region, the support assembly comprising:

[0041] A supporting layer, wherein the supporting layer has a plurality of first buffer grooves, the first buffer grooves are located in the bending area, the plurality of first buffer grooves are arranged at intervals, and the supporting layer has a supporting surface for supporting the flexible screen;

[0042] The support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction. The support layer further has at least one groove, and the orthographic projection of the groove along the thickness direction of the support assembly is located between the orthographic projections of two adjacent first buffer grooves in the second direction along the thickness direction of the support assembly.

[0043] Wherein, the groove and the first buffer groove are both located on the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction;

[0044] Alternatively, the groove and the first buffer groove are both located on a side of the support layer away from the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction;

[0045] Alternatively, the groove is located on a side of the supporting layer away from the supporting surface, and the first buffer groove is located on the supporting surface.

[0046] The third aspect embodiment of the present application further provides a display device, comprising a flexible display screen and a support assembly as described in any embodiment of the first aspect of the present application or comprising a support assembly as described in an embodiment of the second aspect of the present application.

[0047] In the present application, the support component is used to support the flexible display screen and provide physical protection for the flexible display screen; the support layer has a plurality of first buffer grooves in the bending area, and the plurality of first buffer grooves are arranged at intervals so as to weaken the stiffness of the support layer and facilitate bending; the first component is arranged in the main body area to realize the fastening connection between the support layer and the flexible display screen through the first component; the connecting member is arranged on the side where the support surface is located and is located in the bending area, and the elastic modulus of the connecting member is greater than the elastic modulus of the first component. The connecting member and the support layer mainly jointly resist the external impact on the bending area, and the connecting member withstands the extrusion pressure of the solid part of the support layer through the connecting member, which can improve the extrusion of the solid part of the bending area on the flexible display screen caused by the torsion of the structure in the folded state, reduce the tensile stress of the supporting component on the flexible display screen, and improve the force uniformity of the flexible display screen in the bending area, thereby reducing the risk of failure of the flexible display screen, and thereby improving the performance of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0049] Figure 1 This is a schematic structural diagram of a support assembly in an expanded state provided by an embodiment of the present application;

[0050] Figure 2 This is a schematic structural diagram of a support assembly in a folded state provided by an embodiment of the present application;

[0051] Figure 3 is a partial cross-sectional view of a support assembly and a flexible display screen provided in an embodiment of the present application;

[0052] Figure 4 is a partial cross-sectional view of a support assembly and a flexible display screen provided in another embodiment of the present application;

[0053] Figure 5 is a partial cross-sectional view of a support assembly and a flexible display screen provided in another embodiment of the present application;

[0054] Figure 6 This is a partial top view of the support layer in the bending area provided by another embodiment of the present application;

[0055] Figure 7 This is a partial top view of the support layer in the bending area provided by another embodiment of the present application;

[0056] Figure 8 yes Figure 7 Cross-sectional view along BB line at point A;

[0057] Figure 9is a partial top view of the first protective layer provided by an embodiment of the present application;

[0058] Figure 10 is a partial sectional view of the support assembly provided by yet another embodiment of the present application;

[0059] Figure 11 is a partial top view of the first protective layer and the second protective layer of the embodiment of Figure 10

[0060] Figure 12 is a partial sectional view of the flexible display provided by an embodiment of the present application;

[0061] Figure 13 is a structural schematic view of the display device provided by a second aspect embodiment of the present application;

[0062] Figure 14 is a partial sectional view of the display device provided by a second aspect embodiment of the present application.

[0063] Legend of reference signs:

[0064] 10, support assembly; 101, bending area; 102, main body area; 1021, first main body area; 1022, second main body area; 20, flexible display; 30, display device;

[0065] 11, support layer; 113, first buffer groove; 1131, first segment; 1132, second segment; 114, groove; 115, support surface; 116, solid part;

[0066] 12, first assembly; 121, first adhesive member; 1211, first end surface; 122, second adhesive member; 1221, second end surface; 123, first gap; 124, second gap; 125, third gap;

[0067] 13, connecting member; 131, third end surface; 132, fourth end surface;

[0068] 14, first protective layer; 141, second buffer groove;

[0069] 15, second protective layer; 151, third buffer groove;

[0070] 16, polarizer; 17, cover plate; 18, support film;

[0071] 100, substrate; 110, base plate; 120, first insulating layer; 130, second insulating layer; 140, third insulating layer; 150, drive circuit; 151a, gate; 151b, source / drain; 152, storage capacitor; 152a, first plate; 152b, second plate;

[0072] ​200, pixel definition layer; 210, pixel definition portion; 220, pixel opening;

[0073] 300, light-emitting functional layer; 310, first electrode; 320, second electrode;

[0074] 400, encapsulation layer;

[0075] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0076] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present application; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0077] In the description of this application, it should be noted that, unless otherwise specified, "plurality" means more than two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are merely for the purpose of facilitating the description of this application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0078] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0079] Compared with traditional display devices, organic light-emitting (OLED) display devices have the advantages of ultra-thin, bendable, high brightness, high definition, high luminous efficiency, etc., and are gradually applied in the fields of smart phones, wearable devices, vehicle-mounted, handheld terminals, home intelligence, etc. Among them, the OLED display device can be designed into a 3D double-curved surface form, a 3D four-curved surface form, etc. As the future development direction, with the development of flexible display technology, flexible screens are more and more applied to terminal devices. In terminal devices, the flexible screen is usually combined with a support assembly, and the folding and unfolding of the flexible screen are realized by using the support assembly, so as to constitute a folding screen in the terminal device. At the same time, due to the bendable and foldable characteristics of the flexible screen in structure, various forms of electronic devices can be prepared by using the flexible screen, for example, the flexible screen is applied in a folding screen mobile phone, and the folding realizes the storage of a large-area screen, so as to meet the requirements of users for large screens and portability. Compared with traditional screens, the flexible screen has the advantages of light weight, thin size, low power consumption, etc., and due to the bendable and flexible characteristics of the flexible screen, the application scenarios of the flexible screen are more and more widely.

[0080] However, the current OLED display product still has many deficiencies in use performance. In the related art, in order to meet the bending performance of the back support assembly itself, the back support assembly is usually designed with array openings in the bendable area. The support layer forms a solid part between adjacent openings. In the bent state, due to the structure torsion, the solid part may cause excessive extrusion pressure on the flexible display screen. In addition, when the support assembly is impacted by external force, the hollow design of the openings reduces the bearing area, causing local stress concentration of the flexible display screen, thereby increasing the risk of failure of the flexible display screen.

[0081] To solve the above technical problems, the structure of the support assembly is further optimized to improve the stress uniformity of the flexible display screen in the bending area and reduce the risk of failure of the flexible display screen.

[0082] In order to better understand the present application, the following will be described in combination with Figures 1 to 14 The support assembly and the display device of the embodiments of the present application are described in detail.

[0083] Please refer to Figures 1 to 3The support assembly 10 provided by the embodiment of the present application is used for supporting the flexible display screen 20, and the support assembly 10 comprises a bending area 101 and a main body area 102 located at least one side of the bending area 101. The support assembly 10 comprises: a support layer 11, the support layer 11 is provided with a plurality of first buffer grooves 113, the first buffer grooves 113 are located in the bending area 101, and the plurality of first buffer grooves 113 are arranged at intervals; the support layer 11 is provided with a support surface 115 for supporting the flexible display screen 20; a first assembly 12 is arranged on the support surface 115 and located in the main body area 102; a connecting piece 13 is arranged on the side where the support surface 115 is located, and the connecting piece 13 is at least partially located in the bending area 101; and the elastic modulus of the connecting piece 13 is greater than the elastic modulus of the first assembly 12.

[0084] In the embodiment of the present application, the support assembly 10 is used for supporting the flexible display screen 20 and providing physical protection for the flexible display screen 20. The support layer 11 is provided with a plurality of first buffer grooves 113 in the bending area 101, and the plurality of first buffer grooves 113 are arranged at intervals, so as to weaken the rigidity of the support layer 11 and facilitate bending. The first assembly 12 is arranged in the main body area 102, so as to realize the fastening connection between the support layer 11 and the flexible display screen 20 through the first assembly 12. The connecting piece 13 is arranged on the side where the support surface 115 is located and located in the bending area 101, and the elastic modulus of the connecting piece 13 is greater than the elastic modulus of the first assembly 12. The external impact on the bending area 101 is mainly resisted by the connecting piece 13 and the support layer 11, and the extrusion pressure of the solid part 116 of the support layer 11 is borne by the connecting piece 13. The extrusion of the solid part 116 of the bending area 101 on the flexible display screen 20 caused by the structure torsion in the folded state is improved, the pulling stress of the support assembly 10 on the flexible display screen 20 is reduced, the stress uniformity of the flexible display screen 20 in the bending area 101 is improved, the risk of failure of the flexible display screen 20 is reduced, and the use performance of the display device 30 is improved.

[0085] It should be noted that, Figures 1-12 The direction Z in the above formula represents the thickness direction Z of the support assembly 10, the first direction X represents the direction perpendicular to the bending axis of the support assembly 10 in the unfolded state, and the second direction Y represents the direction parallel to the bending axis of the support assembly 10. In the unfolded state, the first direction X and the second direction Y are both parallel to the display surface direction of the flexible display screen 20.

[0086] Figure 1 FIG. 4 is a structural schematic diagram of the support assembly 10 in the unfolded state. Figure 2 FIG. 5 is a structural schematic diagram of the support assembly 10 in the folded state. It should be noted that the bending area 101 refers to the area in the support assembly 10 that can be switched between the planar state and the folded state. The planar unfolding or folding of the bending area 101 can realize the switching of the support assembly 10 between the unfolded state and the folded state.

[0087] As shown in Figure 1 and Figure 2 , the support assembly 10 includes a bending region 101 and a main body region 102. The flexible display screen 20 is arranged on the side where the support surface 115 is located, closely adheres to the support assembly 10, and spans the main body region 102 of the bending region 101 of the support assembly 10. For example, the orthogonal projection of the flexible display screen 20 along the thickness direction Z of the support assembly 10 can completely coincide with the orthogonal projection of the support assembly 10 along its own thickness direction Z.

[0088] Optionally, the main body region 102 has two. In the unfolded state, the two main body regions 102 are located on both sides of the bending region 101 in the first direction X, and the flexible display screen 20 can display pictures in both the bending region 101 and the main body region 102. In the folded state, the two main body regions 102 are arranged in a stacked manner along the thickness direction Z of the support assembly 10 through the bending of the bending region 101, thereby realizing the storage of the support assembly 10.

[0089] As shown in Figure 3 , the support assembly 10 includes a support layer 11. The support layer 11 has sufficient strength and rigidity to provide support for the flexible display screen 20, provide support for the flexible display screen 20 while also providing physical protection for the flexible display screen 20, and reduce the impact of external force on the flexible display screen 20. At the same time, through the bending action of the support layer 11 at the bending region 101, the flexible display screen 20 is driven to fold or unfold together. The material of the support layer 11 may, for example, be metal, ceramic fiber or carbon fiber, etc., and the embodiments of the present application do not make specific limitations thereto, as long as the support layer 11 can provide sufficient support for the flexible display screen 20 and can smoothly bend at the bending region 101.

[0090] As shown in Figure 6 , the support layer 11 has a plurality of first buffer grooves 113. The plurality of first buffer grooves 113 are all located at the bending region 101, and the plurality of first buffer grooves 113 are arranged at intervals so as to weaken the rigidity of the support layer 11 at the bending region 101. Optionally, as shown in Figure 6 , the orthogonal projection of the first buffer groove 113 along the thickness direction Z of the support assembly 10 is in the shape of a strip. As shown in Figure 7As shown, the first buffer groove 113 has a positive projection in the thickness direction Z of the support assembly 10 in the shape of a dumbbell. The first buffer groove 113 can also have a positive projection in the thickness direction Z of the support assembly 10 in the shape of an ellipse, a water drop, or other shapes. Optionally, the first buffer groove 113 extends along the extension direction of the bending axis, facilitating bending. Alternatively, the first buffer groove 113 can also extend along the first direction X, which can weaken the rigidity of the support layer 11. Optionally, a plurality of first buffer grooves 113 are arranged in rows and columns along the first direction X and the second direction Y. Alternatively, a plurality of first buffer grooves 113 are arranged at equal intervals in the bending area 101, and the present application does not make specific limitations thereon, and the appropriate slotting mode can be adaptively selected according to actual needs.

[0091] As shown, Figure 3 The first assembly 12 is arranged on the support surface 115 and located in the main body area 102. The opposite sides of the first assembly 12 along the thickness direction Z are respectively bonded to the area of the support surface 115 corresponding to the main body area 102 and the side of the flexible display screen 20 facing the support assembly 10, so as to tightly connect the flexible display screen 20 and the support assembly 10 together.

[0092] As shown, Figure 3 The support assembly 10 further comprises a connecting piece 13. The connecting piece 13 is located on the side of the support surface 115 and in the bending area 101. The connecting piece 13 and the first assembly 12 are arranged in the same layer and disconnected. It should be noted that the connecting piece 13 and the first assembly 12 are arranged in disconnection, which means that the two can be arranged at intervals or in contact with each other. In the case that the connecting piece 13 and the first assembly 12 are in contact with each other, the contact surfaces of the two can relatively displace, so as to ensure that the support assembly 10 is more smoothly bent. For example, as shown, Figure 3 The connecting piece 13 and the first assembly 12 have a certain interval. Optionally, in order to ensure that the entire bending area 101 has better buffer resistance and to ensure that the bending area 101 and the main body area 102 provide relatively uniform support force and flatness to the flexible display screen 20, the connecting piece 13 and the first assembly 12 can be arranged in contact with each other, and a release agent is coated on the end surface of the first assembly 12 facing the connecting piece 13 during the preparation process, so as to ensure that the connecting piece 13 and the first assembly 12 can relatively displace, facilitating bending. Alternatively, the connecting piece 13 and the first assembly 12 can have the same or different dimensions along the thickness direction Z of the support assembly 10.

[0093] The elastic modulus of the connecting member 13 is greater than the elastic modulus of the first assembly 12. The connecting member 13 has a greater ability to resist external forces. For example, the material of the connecting member 13 can be steel or aluminum. For another example, the material of the connecting member 13 has high impact absorption performance characteristics, for example, the material of the connecting member 13 can include polyurethane, nanoscale polyurethane modified material, rubber, pressure sensitive adhesive, structural adhesive or silicone. Alternatively, the material of the connecting member 13 can be different from the material of the first assembly 12, for example, the connecting member 13 is a high elastic modulus optical adhesive, and the first assembly 12 is a low elastic modulus optical adhesive.

[0094] By arranging the connecting member 13 in the bending area 101, and the elastic modulus of the connecting member 13 being greater than the elastic modulus of the first assembly 12, the extrusion of the flexible display 20 by the solid part 116 of the support layer 11 is resisted by the connecting member 13, which can improve the extrusion of the flexible display 20 by the solid part 116 of the bending area 101 caused by structural torsion in the folded state, reduce the tensile stress of the flexible display 20 by the support assembly 10, and improve the stress uniformity of the flexible display 20 in the bending area 101, thereby reducing the risk of failure of the flexible display 20.

[0095] In some alternative embodiments, the connecting member 13 has a plurality of vibration absorption holes. The plurality of vibration absorption holes are arranged at intervals along the second direction Y, and the orthogonal projection of the first buffer groove 113 along the thickness direction Z of the support assembly 10 overlaps the orthogonal projection of the vibration absorption holes along the thickness direction Z of the support assembly 10, so as to further absorb external impact energy through the vibration absorption holes, improve the impact resistance of the connecting member 13, and further improve the protection effect of the connecting member 13 on the flexible display 20. Alternatively, the vibration absorption holes have multiple layers. The multiple layers of vibration absorption holes are arranged at intervals along the thickness direction Z of the support assembly 10, and the hole diameters of the multiple layers of vibration absorption holes gradually decrease in a direction away from the support layer 11.

[0096] In some alternative embodiments, as shown in Figure 4 The first assembly 12 includes a first adhesive 121 located on one of the two main body areas 102 and a second adhesive 122 located on the other. The gap between the first adhesive 121 and the second adhesive 122 is a first gap 123, and the connecting member 13 is located in the first gap 123. The support assembly 10 has a folded state and an unfolded state. In the unfolded state, the two main body areas 102 are located on opposite sides of the bending area 101 in the first direction X, and the size of the connecting member 13 along the first direction X is less than the size of the first gap 123 along the first direction X.

[0097] In these optional embodiments, for ease of description, the two main body areas 102 are defined as a first main body area 1021 and a second main body area 1022, respectively. In the unfolded state, the first main body area 1021 and the second main body area 1022 are located on opposite sides of the bending area 101 along the first direction X. The first adhesive member 121 and the second adhesive member 122 are respectively disposed in areas corresponding to the first and second main body areas 1021, 1022 on the support surface 115. A first gap 123 is formed between the first and second adhesive members 121, 122. The connecting member 13 is located within the first gap 123. In this embodiment, the size of the connecting member 13 along the first direction X is smaller than the size of the first gap 123 along the first direction X, that is, the connecting member 13 is spaced apart from the first adhesive member 121 and the second adhesive member 122, so as to weaken the stiffness of the connection between the bending area 101 and the first main area 1021 and the second main area 1022, thereby improving the smoothness of folding or unfolding of the support assembly 10; at the same time, the size of the connecting member 13 along the first direction X is smaller than the size of the first gap 123 along the first direction X, and a first buffer hole can be formed between the connecting member 13 and the first adhesive member 121 and the second adhesive member 122, respectively. The external impact force from the first direction X is weakened by the first buffer hole, and then the external impact force is resisted by the connecting member 13, thereby further improving the uniformity of the force applied to the flexible display screen 20 in the bending area 101 and reducing the risk of failure of the flexible display screen 20.

[0098] In some optional embodiments, such as Figure 4 As shown, the first adhesive member 121 has a first end surface 1211 facing the connecting member 13. The second adhesive member 122 has a second end surface 1221 facing the connecting member 13. The gap between the connecting member 13 and the first end surface 1211 is a second gap 124. The gap between the connecting member 13 and the second end surface 1221 is a third gap 125. In the deployed state, the dimension of the second gap 124 along the first direction X is the same as the dimension of the third gap 125 along the first direction X.

[0099] In these optional embodiments, the connector 13 is spaced apart from the first adhesive member 121 and the second adhesive member 122. The end surface of the connector 13 facing the first adhesive member 121 is defined as the third end surface 131, and the end surface of the connector 13 facing the second adhesive member 122 is defined as the fourth end surface 132. The gap between the first end surface 1211 and the third end surface 131 is defined as the second gap 124. The gap between the fourth end surface 132 and the second end surface 1221 is defined as the third gap 125. When the support assembly 10 is in the unfolded state, the dimension of the second gap 124 along the first direction X is the same as the dimension of the third gap 125 along the first direction X, thereby further ensuring uniform force on the flexible display screen 20.

[0100] In some optional embodiments, such as Figure 4As shown, in the unfolded state, the dimension of the connecting member 13 along the thickness direction Z of the support assembly 10 is smaller than the dimension of the first adhesive member 121 and / or the second adhesive member 122 along the thickness direction Z of the support assembly 10 .

[0101] In these optional embodiments, by setting the size of the connecting member 13 along the thickness direction Z of the support component 10 to be smaller than the size of the first adhesive member 121 and / or the second adhesive member 122 along the thickness direction Z of the support component 10, a second buffer hole is formed in the thickness direction Z of the support component 10. The second buffer hole can weaken part of the impact energy in the thickness direction Z of the support component 10, and the connecting member 13 can further resist the external impact force; at the same time, due to the presence of the second buffer hole, the solid portion 116 of the supporting layer 11 is spaced from the flexible display screen 20, which can reduce or eliminate the extrusion pressure of the solid portion 116 on the flexible display screen 20, thereby making the flexible display screen 20 more evenly stressed in the bending area 101, thereby reducing the risk of failure of the flexible display screen 20.

[0102] Optionally, the first adhesive 121 and the second adhesive 122 have the same size along the thickness direction Z of the support component 10, and the ratio between the size of the connecting member 13 along the thickness direction Z of the support component 10 and the size of the first adhesive 121 and / or the second adhesive 122 along the thickness direction Z of the support component 10 is 2 / 3 to 1 / 2, ensuring that the connecting member 13 has sufficient thickness to ensure better impact resistance.

[0103] In some optional embodiments, the dimension of the connecting member 13 along the thickness direction Z of the supporting component 10 is smaller than the dimension of the first adhesive member 121 and / or the second adhesive member 122 along the thickness direction Z of the supporting component 10, and the connecting member 13 is spaced apart from the first adhesive member 121 and the second adhesive member 122, respectively, to further ensure the impact protection of the supporting component 10 on the flexible display screen 20.

[0104] In some optional embodiments, such as Figure 4 As shown, the support component 10 also includes a support film 18, which is used to be arranged on the side of the flexible display screen 20 facing the support layer 11. The first component 112 and the connecting member 13 are arranged in the same layer, and the first component 12 and the connecting member 13 are located between the support layer 11 and the support film 18.

[0105] The connecting member 13 is fixed on the supporting surface 115 , and the surface of the connecting member 13 facing the supporting film 18 is spaced apart from the supporting film 18 .

[0106] In these optional embodiments, the connector 13 is fixed to the side of the support layer 11 facing the flexible display screen 20 to improve the integration of the support assembly 10 and facilitate preparation.

[0107] In some optional embodiments, such asFigure 5 As shown, the connecting member 13 is fixed to the surface of the supporting film 18 facing the supporting layer 11 , and the surface of the connecting member 13 facing the supporting layer 11 is spaced apart from the supporting layer 11 .

[0108] In these optional embodiments, by fixing the connecting member 13 to the surface of the supporting film 18 facing the supporting layer 11 and spacing it from the supporting layer 11, while the connecting member 13 resists external impacts and reduces or eliminates the extrusion pressure of the solid portion 116 on the flexible display screen 20, it is avoided that the flexible display screen 20 is hollowed out in the bending area 101 and the supporting assembly 10, ensuring that the supporting assembly 10 has sufficient supporting strength for the flexible display screen 20 in the bending area 101.

[0109] Optionally, the connector 13 is fastened to the area of ​​the support surface 115 corresponding to the bending area 101 or the side of the flexible display screen 20 facing the support assembly 10 by using an adhesive structure such as optical adhesive or structural adhesive.

[0110] Of course, the dimensions of the connecting member 13, the first adhesive member 121 and the second adhesive member 122 along the thickness direction Z of the support assembly 10 can also be the same, that is, the connecting member 13, the first adhesive member 121 and the second adhesive member 122 are arranged in the same plane on the side facing away from the support surface 115 to ensure the flatness of the flexible display screen 20.

[0111] In some optional embodiments, such as Figure 6 and Figure 7 As shown, in the unfolded state, a plurality of first buffer grooves 113 are spaced apart along the second direction Y. The support layer 11 further has at least one groove 114, the orthographic projection of the groove 114 along the thickness direction of the support component 10 being located between the orthographic projections of two adjacent first buffer grooves 113 in the thickness direction of the support component 10 in the second direction Y. The plurality of first buffer grooves 113 are spaced apart along the second direction Y so as to weaken the rigidity of the support layer 11 and ensure that the support layer 11 meets the flexible bending requirements. The orthographic projection of the groove 114 along the thickness direction of the support component 10 being located between the orthographic projections of two adjacent first buffer grooves 113 in the thickness direction of the support component 10 in the second direction Y can further weaken the rigidity of the solid portion 116 of the support layer 11 and reduce the extrusion pressure of the solid portion 116 on the flexible display screen 20.

[0112] The groove 114 and the first buffer groove 113 are both located on the support surface 115, and the groove 114 is connected to two adjacent first buffer grooves 113 along the second direction Y, further weakening the stiffness of the support layer 11 in the bending region 101. That is, the groove 114 is connected to two adjacent first buffer grooves 113 along the second direction Y, forming a connecting groove. This increases the opening area of ​​the support layer 11 in the bending region 101 and further weakens the stiffness of the solid portion 116 of the support layer 11.

[0113] Alternatively, optionally, the groove 114 and the first buffer groove 113 are both located on the side of the support layer 11 away from the support surface 115, and the groove 114 is respectively connected to the two first buffer grooves 113 adjacent to each other along the second direction Y, thereby further weakening the stiffness of the support layer 11 in the bending area 101 while ensuring the flatness of the support surface 115.

[0114] Alternatively, optionally, the groove 114 is located on the side of the support layer 11 away from the support surface 115, and the first buffer groove 113 is located on the support surface 115 to ensure that the support layer 11 has a relatively uniform stress distribution in the thickness direction of the bending area 101, thereby ensuring that the flexible display screen 20 is not easily damaged.

[0115] Optionally, there are multiple grooves 114. Figure 6 and Figure 7 As shown, a groove 114 is provided between any two first buffer grooves 113 adjacent to each other along the second direction Y. A plurality of grooves 114 are arranged in a one-to-one correspondence between any two first buffer grooves 113 adjacent to each other along the second direction Y. Alternatively, a groove 114 is provided every two first buffer grooves 113 along the second direction Y.

[0116] In some optional embodiments, the first buffer groove 113 is arranged to penetrate along the thickness direction Z of the support component 10 to form a first buffer hole; the orthographic projection of the groove 114 along the thickness direction of the support component 10 is located between the orthographic projections of the two adjacent first buffer holes in the second direction Y in the thickness direction Z of the support component 10; the groove 114 is arranged on at least one side of the support layer 11 along the thickness direction Z of the support component 10, and is connected to or spaced apart from the two adjacent first buffer holes along the second direction Y.

[0117] In these optional embodiments, by setting the first buffer groove 113 through the thickness direction Z of the support component 10, the stiffness of the support layer 11 in the bending area 101 can be further weakened. At the same time, the groove 114 is set non-through. The groove 114 can be set on at least one side of the support layer 11 along the thickness direction Z of the support component 10, and connected or spaced apart with the two adjacent first buffer holes along the second direction Y, which can ensure the continuity of the solid part 116 while weakening the stiffness of the solid part 116.

[0118] In some optional embodiments, the groove 114 is provided on a side of the supporting layer 11 facing away from the supporting surface 115 , so as to ensure the flatness of the supporting surface 115 and thereby ensure that the flexible display screen 20 can be subjected to uniform force.

[0119] In some optional embodiments, the groove 114 is provided through the support assembly 10 along the thickness direction Z to form a through hole. The through hole connects two adjacent first buffer holes along the second direction Y to further weaken the rigidity of the solid portion 116 of the support layer 11 and reduce the extrusion pressure of the solid portion 116 on the flexible display 20.

[0120] In some optional embodiments, such as Figure 6 and Figure 7 As shown, the plurality of first buffer slots 113 are arranged in rows and columns along a first direction X and a second direction Y, wherein the first direction X is a column direction and the second direction Y is a row direction, and the first direction X and the second direction Y intersect.

[0121] The plurality of first buffer slots 113 in each row of the first buffer slots 113 are arranged at intervals along the second direction Y. In the expanded state, the first buffer slots 113 in two adjacent rows are staggered along the first direction X.

[0122] In these optional embodiments, the plurality of first buffer grooves 113 are arranged in rows and columns along a first direction X and a second direction Y. The first direction X is the column direction, and the second direction Y is the row direction. In the unfolded state, the first buffer grooves 113 in two adjacent rows are staggered along the first direction X, that is, the first buffer grooves 113 in each row are staggered with the first buffer grooves 113 in the adjacent row in the column direction. This allows the plurality of first buffer grooves 113 to be relatively evenly distributed in the bending zone 101, thereby improving the buffering effect of the bending zone 101, ensuring uniform force on the flexible display 20, and optimizing the mechanical properties of the flexible display 20 in both the folded and unfolded states.

[0123] In some optional embodiments, such as Figure 7 and Figure 8 As shown, the support layer 11 includes a solid portion 116 located between the first buffer grooves 113 in the i-th column and the first buffer grooves 113 in the (i+2)th column. The grooves 114 are disposed in the solid portion 116. In the expanded state, the solid portion 116 has a dimension B along the first direction X, and the grooves 114 have a dimension b along the first direction X, where b ≤ B / 2.

[0124] In these optional embodiments, the support layer 11 includes a solid portion 116 located between the first buffer grooves 113 in the i-th column and the first buffer grooves 113 in the i+2-th column, where i is a natural positive integer. For example, a groove 114 is located in the solid portion 116 between the first buffer grooves 113 in the 1st column and the first buffer grooves 113 in the 3rd column. The presence of the groove 114 in the solid portion 116 effectively reduces the stiffness of the solid portion 116 and the weight of the support layer 11. In the deployed state, the dimension B of the solid portion 116 along the first direction X is B, while the dimension b of the groove 114 along the first direction X satisfies the condition b ≤ B / 2. That is, the dimension B of the groove 114 along the first direction X is less than or equal to half of the dimension B of the solid portion 116 along the first direction X. This ensures that the solid portion 116 provides sufficient support strength for the flexible display 20. This configuration of the solid portion 116 and the groove 114 ensures that the support assembly 10 provides sufficient support strength for the flexible display 20 while effectively reducing stress applied to the flexible display 20.

[0125] Optionally, the ratio between the dimension B of the solid portion 116 along the first direction X and the dimension b of the groove 114 along the first direction X can be 6:1, 5:1, 4:1, 3:1, or 2:1. Preferably, the ratio between the dimension B of the solid portion 116 along the first direction X and the dimension b of the groove 114 along the first direction X is 3:1.

[0126] In some optional embodiments, in the expanded state, a dimension of the first buffer groove 113 along the first direction X is a1, where a1≤b.

[0127] In these optional embodiments, the dimension b of the groove 114 along the first direction X is greater than or equal to the dimension of the first buffer groove 113 along the first direction X, and less than or equal to half of the dimension B of the solid portion 116 along the first direction X, so as to further balance the stress and supporting force of the supporting layer 11 on the flexible display screen 20.

[0128] In some optional embodiments, such as Figure 7 As shown, in the expanded state, the first buffer slot 113 has a first segment 1131 and second segments 1132 located at opposite ends of the first segment 1131 along the second direction Y. The dimension of the first segment 1131 along the first direction X is a2, where a2≤b≤B / 2.

[0129] In these optional embodiments, in the unfolded state, as Figure 7As shown, the first buffer groove 113 has a positive projection in the thickness direction Z of the support assembly 10 in the shape of a dumbbell. The first buffer groove 113 has a first segment 1131 and a second segment 1132 connected to the first segment 1131. The first segment 1131 is the main part of the first buffer groove 113, and the second segment 1132 is located at the opposite ends of the first segment 1131 along the second direction Y. The size of the second segment 1132 along the first direction X is greater than that of the first segment 1131 along the first direction X, which helps to further optimize the stability and impact resistance of the overall structure.

[0130] The size of the first segment 1131 along the first direction X is a2, and the size of the groove 114 along the first direction X satisfies the relationship: a2≤b≤B / 2. By reasonably configuring the size of the first segment 1131 according to the above ratio, the first buffer groove 113 and the groove 114 can effectively control the pressure distribution while meeting the buffering function, avoid the deformation or damage of the flexible display screen 20 due to excessive local stress, and also ensure that the solid part 116 has sufficient support strength for the flexible display screen 20.

[0131] In some optional embodiments, in the unfolded state, the size of the support layer 11 along the thickness direction Z of the support assembly 10 is H, and the size of the groove 114 along the thickness direction Z of the support assembly 10 is h, 1 / 3H

[0132] In these optional embodiments, in the thickness direction Z of the support assembly 10, the relationship between the structural size of the support layer 11 and the depth size of the groove 114 satisfies: 1 / 3H

[0133] Optionally, the ratio between the size h of the groove 114 along the thickness direction Z of the support assembly 10 and the size H of the support layer 11 along the thickness direction Z of the support assembly 10 satisfies: 5:12, 1:2 or 7 / 12.

[0134] In some optional embodiments, the material of the support layer 11 includes at least one of a titanium alloy, an aluminum alloy, and stainless steel. The specific material selected for the support layer 11 is determined based on the actual use requirements and required physical properties of the flexible display 20. Titanium alloy, with its excellent strength, lightweight properties, and good corrosion resistance, is suitable for applications requiring high strength and long-term durability. Aluminum alloy, due to its light weight, good processability, and low cost, is suitable for applications that require a certain strength while controlling weight and cost. Stainless steel, due to its excellent corrosion resistance and high strength, is also suitable for applications requiring additional impact resistance or high temperature resistance.

[0135] By choosing titanium alloy, aluminum alloy, or stainless steel as the material for support layer 11, it not only ensures stable support for flexible display 20, but also possesses excellent impact resistance, wear resistance, and corrosion resistance. Whether the flexible display 20 is frequently folded and unfolded, or subjected to external shock and vibration, support layer 11 can effectively maintain the integrity of the flexible display 20.

[0136] In addition, the material of the support layer 11 is selected as at least one of titanium alloy, aluminum alloy or stainless steel, which has better flatness than the support layer 11 made of carbon fiber material, which is beneficial to improving the flatness of the flexible display screen 20 in the main area 102, thereby reducing the risk of failure of the flexible display screen 20.

[0137] In some optional embodiments, the material of the connecting member 13 includes one or more of titanium alloy, aluminum alloy, stainless steel, rubber, silicone, polyurethane, polyimide or polycarbonate.

[0138] Titanium alloy, aluminum alloy, and stainless steel all have sufficient rigidity to withstand the extrusion pressure transmitted from the solid portion 116 to the flexible display 20. Rubber, silicone, polyurethane, polyimide, or polycarbonate, on the other hand, have excellent elasticity and wear resistance, effectively absorbing and mitigating vibrations when subjected to external impacts. They have high cushioning capacity, effectively protecting the flexible display 20 from mechanical shock damage, and offering certain lightweight advantages in design.

[0139] By using titanium alloy, aluminum alloy, stainless steel, rubber, silicone, polyurethane, polyimide or polycarbonate as the material of the connector 13, the impact of external impact and the impact of the solid part 116 on the flexible display 20 can be effectively reduced, preventing mechanical damage to the flexible display 20 during use.

[0140] In some optional embodiments, the material of the first component 12 includes optical adhesive or double-sided adhesive to ensure that the flexible display screen 20 and the supporting component 10 can be firmly connected together.

[0141] Optionally, the material of the connecting member 13 is polyurethane, the material of the first component 12 is optical adhesive, and the material of the supporting layer 11 is titanium alloy.

[0142] In some optional embodiments, such as Figure 9 As shown, the support assembly 10 further includes a first protective layer 14. The first protective layer 14 is disposed on a side of the support layer 11 facing away from the connector 13. The first protective layer 14 is located in the bending region 101 and extends from the bending region 101 to at least a portion of the main body region 102. The first protective layer 14 has at least one second buffer groove 141.

[0143] In these optional embodiments, the first protective layer 14 is located on the surface of the support layer 11 facing away from the support surface 115 and covers at least the bending zone 101, thereby providing protection and support for the side of the support layer 11 facing away from the flexible display 20 and improving the impact resistance of the support layer 11. The first protective layer 14, the support layer 11, and the connector 13 work together to enhance the support strength of the flexible display 20. Specifically, the first protective layer 14 has a second buffer groove 141, which is located in the bending zone 101, thereby reducing the rigidity of the portion of the support layer 11 located in the bending zone 101. The second buffer groove 141 can further resist the stress in the bending zone 101 and reduce stress concentration. By locally thinning the material, the support layer 11 can meet the bending performance requirements of the flexible display 20, allowing the flexible display 20 to have both good bending performance and impact resistance.

[0144] In some optional embodiments, the second buffer groove 141 is located on the side of the first protective layer 14 facing away from the supporting layer 11 , so as to ensure that the supporting assembly 10 has better flatness on the side facing the flexible display screen 20 .

[0145] In some optional embodiments, such as Figure 10 and Figure 11 As shown, the support assembly 10 further includes a second protective layer 15. The second protective layer 15 is disposed on the side of the first protective layer 14 facing away from the support layer 11. The orthographic projection of the second protective layer 15 along the support assembly 10 coincides with the orthographic projection of the first protective layer 14 along the thickness direction Z of the support assembly 10.

[0146] The second protective layer 15 has at least one third buffer groove 151 , and the second buffer groove 141 and the third buffer groove 151 are staggered along the thickness direction Z of the support assembly 10 .

[0147] In these optional embodiments, the orthographic projection of the second protective layer 15 along the support assembly 10 coincides with the orthographic projection of the first protective layer 14 along the thickness direction Z of the support assembly 10, further ensuring effective support of the flexible display screen 20 by the support assembly 10 through the second protective layer 15. Optionally, the first protective layer 14 and the second protective layer 15 have a high impact energy absorption efficiency. For example, the first protective layer 14 and the second protective layer 15 are both made of polyurethane to further absorb stress in the bending zone 101 and reduce stress concentration. The second buffer groove 141 and the third buffer groove 151 both extend along the first direction X, so that the bending stress can be released at least along the extension direction of the second buffer groove 141 and the third buffer groove 151, thereby improving the bending performance and fatigue resistance of the bending zone 101. In addition, the orthographic projection of the third buffer groove 151 on the support layer 11 is staggered with the orthographic projection of the second buffer groove 141 on the support layer 11, forming a three-dimensional stress dispersion path, which can effectively absorb the interlayer shear stress and release the stress from multiple locations during bending, further providing support and protection for the flexible display screen 20.

[0148] Please also refer to Figures 1 to 12 As shown, a second embodiment of the present application further provides a support assembly 10 for supporting a flexible display screen 20. The support assembly 10 includes a bending region 101 and a main region 102 located on at least one side of the bending region 101. The support assembly 10 includes: a support layer 11 having a plurality of first buffer grooves 113 located in the bending region 101 and spaced apart. The support layer 11 has a support surface 115 for supporting the flexible screen. The support assembly 10 has a folded state and an unfolded state. In the unfolded state, the plurality of first buffer grooves 113 are spaced apart along a second direction Y. The support layer 11 further includes at least one groove 114, the orthographic projection of the groove 114 along the thickness direction of the support assembly 10 being located between the orthographic projections of two adjacent first buffer grooves 113 along the thickness direction of the support assembly 10 in the second direction Y. The plurality of first buffer grooves 113 are spaced apart along the second direction Y to reduce the rigidity of the support layer 11 and ensure that the support layer 11 meets the flexible bending requirements. The orthographic projection of the groove 114 along the thickness direction of the supporting component 10 is located between the orthographic projections of the two adjacent first buffer grooves 113 in the thickness direction of the supporting component 10 in the second direction Y, which can further weaken the stiffness of the solid part 116 of the supporting layer 11 and reduce the extrusion pressure of the solid part 116 on the flexible display screen 20.

[0149] The groove 114 and the first buffer groove 113 are both located on the support surface 115, and the groove 114 is respectively connected to the two first buffer grooves 113 adjacent to each other along the second direction Y, thereby further weakening the rigidity of the support layer 11 in the bending region 101. That is, the groove 114 is respectively connected to the two first buffer grooves 113 adjacent to each other along the second direction Y, and the three form a connecting groove, thereby increasing the opening area of ​​the support layer 11 in the bending region 101, further weakening the rigidity of the solid portion 116 of the support layer 11, and reducing the compressive pressure of the solid portion 116 on the flexible display 20. This can improve the compressive force caused by the solid portion 116 in the bending region 101 on the flexible display 20 caused by structural torsion in the folded state, reduce the tensile stress of the support assembly 10 on the flexible display 20, and improve the uniformity of the force applied to the flexible display 20 in the bending region 101, thereby reducing the risk of failure of the flexible display 20 and improving the performance of the display device 30.

[0150] Alternatively, the groove 114 and the first buffer groove 113 are both located on the side of the support layer 11 away from the support surface 115, and the groove 114 is respectively connected to the two first buffer grooves 113 adjacent to each other along the second direction Y, while further weakening the stiffness of the support layer 11 in the bending area 101, the flatness of the support surface 115 can be ensured.

[0151] Alternatively, the groove 114 is located on the side of the support layer 11 away from the support surface 115, and the first buffer groove 113 is located on the support surface 115 to ensure that the support layer 11 has a relatively uniform stress distribution in the thickness direction of the bending area 101, thereby ensuring that the flexible display screen 20 is not easily damaged.

[0152] In the second embodiment of the present application, the relative position relationship between the groove 114 and the first buffer groove 113, as well as the size ratio relationship between the two can be specifically referred to the introduction in the first embodiment of the present application, and no further details will be given.

[0153] For example, Figure 12 As shown, in the flexible display provided by the embodiment of the present application, the flexible display screen 20 includes a substrate 100, a first electrode 310, a pixel definition layer 200 and a light-emitting functional layer 300.

[0154] The substrate 100 can be optionally configured in a variety of ways. For example, the substrate 100 may include a substrate 110 and a driving circuit 150 disposed on the side of the substrate 110 facing the light-emitting unit. The driving circuit 150 may include a transistor, a storage capacitor 152, and drive signal lines for connecting various devices. The transistor may include a semiconductor, a gate 151a, and a source and drain 151b. The storage capacitor 152 may include a first plate 152a and a second plate 152b.

[0155] Optionally, the substrate 100 further comprises a first insulating layer 120, a second insulating layer 130 and a third insulating layer 140 which are sequentially stacked on one side of the substrate 110 away from the substrate 110.

[0156] The pixel definition layer 200 comprises a pixel defining portion 210 and a pixel opening 220 enclosed by the pixel defining portion 210, the pixel opening 220 exposes at least part of the first electrode 310, and the pixel opening 220 and the first electrode 310 are one-to-one correspondingly arranged. The pixel defining portion 210 is used to isolate light emitting units of different colors and improve the problem of crosstalk of sub-pixels of different colors, and the light emitting units are correspondingly arranged in the pixel opening 220 and used to realize the display function of the flexible display screen 20.

[0157] The light emitting functional layer 300 is arranged on one side of the substrate 100 and comprises light emitting units located at least partially in the pixel opening 220, and the light emitting units are used to realize the display function of the flexible display screen 20.

[0158] Optionally, the light emitting functional layer 300 further comprises a second electrode 320 away from the first electrode 310, and the first electrode 310 and the second electrode 320 are used to drive the light emitting units to emit light. The light emitting units can have different light emitting colors to realize the color display of the flexible display screen 20.

[0159] One of the first electrode 310 and the second electrode 320 is an anode, and the other is a cathode. The embodiment of the present application takes the first electrode 310 as the anode and the second electrode 320 as the cathode as an example.

[0160] Optionally, the material of the first electrode 310 is generally a material with high work function, so as to improve the hole injection efficiency, which can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO) or transparent conductive polymer (such as polyaniline) and the like. For example, the first electrode 310 can be made of ITO-Ag-ITO composite material, and is not particularly limited.

[0161] Optionally, the material of the second electrode 320 can be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the foregoing metal materials, such as magnesium-silver alloy (Mg / Ag) and lithium-aluminum alloy (Li / Al), which is not limited by the embodiment.

[0162] Optionally, the light-emitting functional layer 300 comprises at least one of an electron injection layer (EIL), an electron transport layer (ETL), an emitting material layer (EML), a hole injection layer (HIL) and a hole transport layer (HTL).

[0163] The flexible display screen 20 comprises an encapsulation layer 400 configured to encapsulate the light-emitting units, improve the problem of water and oxygen invasion, and prolong the service life of the flexible display screen 20. The encapsulation layer 400 comprises a first encapsulation layer configured to encapsulate the flexible display screen 20 and improve the problem of water vapor invasion.

[0164] Optionally, the first encapsulation layer is an inorganic encapsulation layer 400, so that the first encapsulation layer has good compactness, the problem of water and oxygen invasion is improved, and the service life of the flexible display screen 20 is prolonged.

[0165] Optionally, the material of the first encapsulation layer comprises one or more of silicon oxide, silicon nitride and silicon oxynitride.

[0166] Optionally, the encapsulation layer 400 further comprises an organic encapsulation layer located on the side of the first encapsulation layer away from the substrate 100. The material of the organic encapsulation layer comprises an organic material. The material of the organic encapsulation layer comprises an organic material, so that the organic encapsulation layer has a suitable thickness and can improve the problem of uneven surface of the film layer of the encapsulation layer 400.

[0167] Optionally, the material of the second encapsulation layer comprises an inorganic material. So that the second encapsulation layer has good compactness, the problem of water and oxygen invasion is improved, and the service life of the flexible display screen 20 is prolonged.

[0168] The encapsulation layer 400 comprises the first encapsulation layer, the organic encapsulation layer and the second encapsulation layer, and has a sandwich structure, which can further improve the encapsulation effect.

[0169] Optionally, the materials of the second encapsulation layer and the first encapsulation layer are the same. So that the second encapsulation layer has good compactness, and the second encapsulation layer and the first encapsulation layer can be prepared by using the same process equipment and materials, which can reduce the preparation cost of the flexible display screen 20.

[0170] As shown in FIG. 1, Figure 13 The third aspect of the present application further provides a display device 30 comprising the flexible display screen 20 and the support assembly 10 according to any one of the first aspect or the second aspect of the embodiments.

[0171] Since the display device 30 provided by the third aspect of the present application comprises the support assembly 10 of any one of the first aspect or the second aspect, the display device 30 provided by the third aspect of the present application has the beneficial effects of the support assembly 10 of any one of the first aspect or the second aspect, which will not be described here again.

[0172] As shown in Fig. 1, the display device 30 is divided into a light-out side and a backlight side along the thickness direction Z thereof. The light-out side is responsible for presenting image information to a user, and the backlight side is responsible for supporting. Figure 14 As shown in Fig. 1, the display device 30 is divided into a light-out side and a backlight side along the thickness direction Z thereof. The light-out side is responsible for presenting image information to a user, and the backlight side is responsible for supporting.

[0173] The display device 30 in the embodiments of the present application includes but is not limited to a mobile phone, a personal digital assistant (PDA), a tablet computer, an electronic book, a television, an access control, a smart fixed telephone, a console, and other devices having a display function.

[0174] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent components thereof can be substituted. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A support assembly for supporting a flexible display screen, the support assembly comprising a bending area and a main body area located on at least one side of the bending area, characterized in that: The support assembly comprises: a supporting layer, the supporting layer having a plurality of first buffer grooves, the first buffer grooves being located in the bending area, the plurality of first buffer grooves being arranged at intervals, and the supporting layer having a supporting surface for supporting the flexible display screen; A first component is disposed on the support surface and located in the main body area; A connecting member is arranged on the side where the supporting surface is located, and the connecting member is at least partially located in the bending area; wherein the elastic modulus of the connecting member is greater than the elastic modulus of the first component.

2. The support assembly according to claim 1, wherein: The two main body areas are disposed on both sides of the bending area, and the first component includes a first adhesive member located on one of the two main body areas and a second adhesive member located on the other; The gap between the first adhesive member and the second adhesive member is a first gap, and the connecting member is located in the first gap; The support assembly has a folded state and an unfolded state. In the unfolded state, the two main body areas are located on opposite sides of the bending area in the first direction, and the size of the connecting member along the first direction is smaller than the size of the first gap along the first direction.

3. The support assembly according to claim 2, wherein: The first adhesive member has a first end face facing the connecting member, the second adhesive member has a second end face facing the connecting member, the gap between the connecting member and the first end face is a second gap, and the gap between the connecting member and the second end face is a third gap. In the expanded state, the size of the second gap along the first direction is the same as the size of the third gap along the first direction.

4. The support assembly according to claim 2, wherein: The support assembly has a folded state and an unfolded state. In the unfolded state, a dimension of the connecting member along the thickness direction of the support assembly is smaller than a dimension of the first adhesive member and / or the second adhesive member along the thickness direction of the support assembly.

5. The support assembly according to claim 4, characterized in that The support assembly further includes a support film, which is used to be arranged on a side of the flexible display screen facing the support layer. The first assembly and the connector are arranged on the same layer, and the first assembly and the connector are located between the support layer and the support film. The connecting member is fixed on the supporting surface, and a surface of the connecting member facing the supporting film is spaced apart from the supporting film.

6. The support assembly according to claim 4, wherein: The support assembly further includes a support film, which is arranged on a side of the flexible display screen facing the support layer. The first assembly and the connector are arranged on the same layer, and the first assembly and the connector are located between the support layer and the support film. The connecting member is fixed to the surface of the supporting film facing the supporting layer, and the surface of the connecting member facing the supporting layer is spaced apart from the supporting layer.

7. The support assembly according to claim 1, wherein: The support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction. The support layer further has at least one groove, and the orthographic projection of the groove along the thickness direction of the support assembly is located between the orthographic projections of two adjacent first buffer grooves in the second direction along the thickness direction of the support assembly. Wherein, the groove and the first buffer groove are both located on the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction; Alternatively, the groove and the first buffer groove are both located on a side of the support layer away from the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction; Alternatively, the groove is located on a side of the supporting layer away from the supporting surface, and the first buffer groove is located on the supporting surface.

8. The support assembly according to claim 1, wherein: The support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction, and the first buffer grooves are arranged through the thickness direction of the support assembly to form first buffer holes. The support layer further has at least one groove, wherein the orthographic projection of the groove along the thickness direction of the support component is located between the orthographic projections of two adjacent first buffer holes in the second direction along the thickness direction of the support component; The groove is provided on at least one side of the support layer along the thickness direction of the support assembly, and is connected to or spaced apart from two adjacent first buffer holes along the second direction; Preferably, the groove is provided on a side of the supporting layer facing away from the supporting surface.

9. The support assembly according to claim 8, wherein: The groove is provided through the support assembly along a thickness direction to form a through hole, and the through hole is communicated with two adjacent first buffer holes along the second direction.

10. The support assembly according to any one of claims 7 to 9, characterized in that: The plurality of first buffer slots are arranged in rows and columns along a first direction and a second direction, the first direction is a column direction, the second direction is a row direction, and the first direction intersects the second direction; The plurality of first buffer slots in each row of the first buffer slots are arranged at intervals along the second direction, and the first buffer slots in two adjacent rows in the expanded state are staggered along the first direction; Preferably, a groove is provided between any two adjacent first buffer grooves along the second direction.

11. The support assembly according to claim 10, wherein: The supporting layer includes a solid portion located between the first buffer groove of the i-th column and the first buffer groove of the i+2-th column, and the groove is arranged in the solid portion. In the expanded state, the size of the solid portion along the first direction is B, and the size of the groove along the first direction is b, b≤B1 / 2.

12. The support assembly according to claim 11, wherein: In the expanded state, a dimension of the first buffer groove along the first direction is a1, and a1≤b.

13. The support assembly according to claim 11, wherein: In the expanded state, the first buffer groove has a first segment and second segments located at opposite ends of the first segment along the second direction. The dimension of the first segment along the first direction is a2, and a2≤b≤B / 2.

14. The support assembly according to claim 11, wherein: In the expanded state, a dimension of the support layer along the thickness direction of the support component is H, a dimension of the groove along the thickness direction of the support component is h, and 1 / 3H<h<2 / 3H.

15. The support assembly according to claim 1, wherein: The material of the support layer includes at least one of titanium alloy, aluminum alloy, and stainless steel.

16. The support assembly according to claim 1, wherein: The material of the connecting member includes at least one or more of titanium alloy, aluminum alloy, stainless steel, rubber, silicone, polyurethane, polyimide or polycarbonate; And / or, the material of the first component includes optical adhesive or double-sided adhesive.

17. The support assembly according to claim 1, wherein: The support assembly further includes a first protective layer, the first protective layer being disposed on a side of the support layer facing away from the connector, the first protective layer being located in the bending region and extending from the bending region to at least a portion of the main body region, the first protective layer having at least one second buffer groove; Preferably, the second buffer groove is located on a side of the first protective layer away from the supporting layer.

18. The support assembly according to claim 17, wherein: The support assembly further includes a second protective layer, which is arranged on a side of the first protective layer away from the support layer, and the orthographic projection of the second protective layer along the support assembly coincides with the orthographic projection of the first protective layer along the thickness direction of the support assembly. The second protective layer has at least one third buffer groove, and the second buffer groove and the third buffer groove are staggered along the thickness direction of the support component.

19. A support assembly for supporting a flexible display screen, the support assembly comprising a bending area and a main body area located on at least one side of the bending area, characterized in that: The support assembly comprises: A supporting layer, wherein the supporting layer has a plurality of first buffer grooves, the first buffer grooves are located in the bending area, the plurality of first buffer grooves are arranged at intervals, and the supporting layer has a supporting surface for supporting the flexible screen; The support assembly has a folded state and an unfolded state. In the unfolded state, a plurality of the first buffer grooves are spaced apart along the second direction. The support layer further has at least one groove, and the orthographic projection of the groove along the thickness direction of the support assembly is located between the orthographic projections of two adjacent first buffer grooves in the second direction along the thickness direction of the support assembly. Wherein, the groove and the first buffer groove are both located on the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction; Alternatively, the groove and the first buffer groove are both located on a side of the support layer away from the support surface, and the groove is respectively connected to two adjacent first buffer grooves along the second direction; Alternatively, the groove is located on a side of the supporting layer away from the supporting surface, and the first buffer groove is located on the supporting surface.

20. A display device, characterized in that: It comprises a flexible display screen and the support assembly according to any one of claims 1 to 18 or the support assembly according to claim 19.

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