Flexible display device and support assembly

Abstract

The present application relates to the field of display technology, and discloses a flexible display device and a support assembly for the purpose of improving the structure of a roll display and improving the reliability of the roll and unfolding operations of the roll display. The flexible display device includes a roll shaft and a flexible module, the flexible module includes a roll sliding area and a flat area, the roll sliding area is configured to move around the roll shaft to realize the unfolding and storage of the flexible module, the flexible module includes a flexible display screen and a support assembly, the support assembly is provided on a side of the flexible display screen facing the surface of the roll shaft, includes a first support member and a second support member, the first support member is a bendable plate-like structure, the second support member is provided on the first support member on the opposite side to the flexible display screen, and includes a plurality of support strips, the plurality of support strips are arranged along the moving direction of the flexible module, and each support strip has an extension direction that coincides with the roll shaft and is fixed on the first support member.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION This application relates to the field of display technology, and more particularly to flexible display devices and support assemblies. [Background technology]

[0002] Rolling displays have attracted much attention as a new application of flexible displays. The rolling motion can be realized by applying a continuous tensile force and using a rotatable shaft. Display screens that can be used for rolling displays generally require a support structure to support the realization of the rolling and unfolding motions, and the design of the support structure has a significant impact on the rolling realization method and reliability of the rolling display. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application discloses a flexible display device and a support assembly with the objective of improving the structure of the roll display and increasing the reliability of the rolling and unfolding operations of the roll display. [Means for solving the problem]

[0004] In a first aspect, an embodiment of the present application is a flexible display device, comprising: A roll shaft; Provided is a flexible display device comprising: a flexible module including a roll sliding area and a flat area, the roll sliding area being configured to move around the roll shaft to enable the flexible module to be unfolded and stored; the flexible module including a flexible display screen and a support assembly, the support assembly being provided on the side of the flexible display screen facing the surface of the roll shaft and including a first support member and a second support member, the first support member being a bendable plate-like structure, the second support member being provided on the first support member opposite the flexible display screen and including a plurality of support strips arranged along the movement direction of the flexible module, each support strip having an extension direction that coincides with the roll shaft and being fixed on the first support member.

[0005] Optionally, the flexible display device further comprises a tension application assembly; The support assembly includes opposing first and second ends, the support assembly rotates around the roll shaft in a direction from the first end to the second end, and the first end is connected to the tension application assembly.

[0006] Optionally, the tension application assembly includes a traction section, a deflection shaft assembly, and a fixed section; the traction portion includes a third end and a fourth end, the third end being connected to the first support member and the fourth end being connected to the fixed portion around the steering shaft assembly; The roll shaft is movable relative to the fixed part such that the flexible module is moved about the roll shaft and deployed.

[0007] Optionally, the deflection shaft assembly includes one movable shaft and one fixed shaft, and the traction unit rotates around the fixed shaft and the movable shaft so that the extension direction is reversed twice; The relative position between the axis of the fixed shaft and the fixed portion is fixed, and the relative position between the axis of the movable shaft and the axis of the roll shaft is fixed.

[0008] Optionally, the flexible display device further includes a first adhesive layer positioned between the towing portion and the first support member, and the towing portion and the first support member are adhered via the first adhesive layer.

[0009] Optionally, an edge of the first support member close to the first end protrudes from an edge of the flexible display screen close to the first end, and the traction portion is connected to the portion of the first support member protruding from the flexible display screen.

[0010] Optionally, the traction portion is adhered to a surface of the first support member facing the flexible display screen.

[0011] Optionally, the traction portion includes a two-layer structure, the two-layer structure being adhered to opposite surfaces of the first support member.

[0012] Optionally, an edge of the first support member near the first end and an edge of the flexible display screen near the first end are substantially aligned, and the traction portion is adhered to a surface of the first support member opposite the flexible display screen.

[0013] Optionally, a first opening is provided in the first support member along the thickness direction of the first support member, and a second opening is provided in the traction portion, and the first support member and the traction portion are connected via a connecting member inserted into the first opening and the second opening, and the connecting member is made of a polymer material.

[0014] Optionally, the first opening is a half through-hole that does not penetrate the first support member, or a through-hole that penetrates the first support member, and the second opening is a through-hole that penetrates the traction portion.

[0015] Optionally, the flexible display device further includes a housing, and the roll shaft and the tension applying assembly are located within the housing; A first end of the support assembly is located within the housing, and a second end of the support assembly extends around the roll shaft and projects outside the housing.

[0016] Optionally, the first support member is provided with a lightening opening in the roll sliding area.

[0017] Optionally, the first support member is provided with a lightening opening in both the roll sliding area and the flat area.

[0018] Optionally, the lightening opening includes at least two rows of through holes, the through holes in each row are arranged along the extension direction of the roll shaft, the through holes in odd-numbered rows and the through holes in even-numbered rows are at least partially offset, and the through holes are strip-shaped holes extending along the extension direction of the roll shaft.

[0019] Optionally, the second support member is located in the roll sliding area.

[0020] Optionally, the support assembly further includes a reinforcing structure, the reinforcing structure being provided on the first support member on an opposite side to the flexible display screen and located in the planar area.

[0021] Optionally, the reinforcing structure is the same material as the first support member or the second support member.

[0022] Optionally, along a direction perpendicular to the first support member, the thickness of the reinforcing structure and the thickness of the second support member are substantially the same.

[0023] Optionally, the flexible display device further includes a second adhesive layer positioned between the second support member and the first support member, and the second support member and the first support member are adhered to each other via the second adhesive layer; The second adhesive layer includes a base layer and adhesive layers positioned on both sides of the base layer, and the base layer is made of a polymer material.

[0024] Optionally, the first support member includes a metal or alloy material, and the thickness of the first support member is 0.02 mm to 0.5 mm.

[0025] Optionally, the second support member comprises a metal, alloy, or metal oxide material, and the width of each of the support strips in the second support member is 0.1 mm to 1 mm, and each of the support strips has a thickness along a direction perpendicular to the first support member of 0.1 mm to 1 mm.

[0026] Optionally, at least some of the support strips among the plurality of support strips are provided with position regulating portions, and the relative positions between the at least some of the support strips and the adjacent support strips are regulated by the position regulating portions.

[0027] Optionally, the position regulating portion includes at least one of a protruding structure and a grooved structure, the protruding structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a concave protrusion, and the grooved structure includes an arc-shaped groove, a square groove, and a trapezoidal groove.

[0028] Optionally, the plurality of support strips include a first support strip located at one end, and the position control portion is provided on the side of the other support strips of the plurality of support strips facing the first support strip, and the position control portion has a protruding structure.

[0029] Optionally, the plurality of support strips include two end support strips located at both end portions and an intermediate support strip located between the two end support strips, and each of the intermediate support strips has the position control portion on both sides facing the two end support strips, and each of the end support strips has the position control portion on the side facing the intermediate support strip, and the position control portion has a convex structure.

[0030] Optionally, a first type of position control portion is provided on a first side of each support strip, and a second type of position control portion is provided on a second side of each support strip, the first type of position control portion and the second type of position control portion are complementary in shape, and the first type of position control portion and the second type of position control portion of two adjacent support strips cooperate complementarily.

[0031] Optionally, the plurality of support strips are provided with at least two rows of position restricting portions, and the position restricting portions of each row are provided so as to align along the arrangement direction of the support strips.

[0032] Optionally, the position restriction portions of adjacent rows are provided alternately.

[0033] Optionally, each support strip includes two or more rows of strip bodies, the strip bodies of each row in the plurality of support strips being arranged in parallel, and at least one row of positional regulating portions being provided on the strip bodies of each row.

[0034] An embodiment of the present application further provides a support assembly configured to be provided on a non-display side of a flexible display screen, the support assembly including a first support member and a second support member, the first support member having a bendable plate-like structure, the second support member being provided on the first support member opposite the flexible display screen, the second support member including a plurality of support strips arranged along a first direction, each of the support strips having the same extension direction and fixed on the first support member.

[0035] Optionally, the support assembly is configured to move around a roll shaft together with the flexible display screen to unfold and retract the flexible display screen, the first support member includes a roll slider and a flat portion, and the roll slider is configured to move around the roll shaft; A lightening opening is provided in the roll sliding portion, or a lightening opening is provided in both the roll sliding portion and the flat portion.

[0036] Optionally, the lightening opening includes at least two rows of through holes, the through holes in each row are arranged along the extension direction of the roll shaft, the through holes in odd-numbered rows and the through holes in even-numbered rows are at least partially offset, and the through holes are strip-shaped holes extending along the extension direction of the roll shaft.

[0037] Optionally, the second support member is located at the roll sliding portion.

[0038] Optionally, the support assembly further includes a reinforcing structure, the reinforcing structure being provided on the first support member on an opposite side to the flexible display screen and located on the planar portion.

[0039] Optionally, the reinforcing structure is the same material as the first support member or the second support member.

[0040] Optionally, along a direction perpendicular to the first support member, the thickness of the reinforcing structure and the thickness of the second support member are substantially the same.

[0041] Optionally, the first support member includes a metal or alloy material, and the thickness of the first support member is 0.02 mm to 0.5 mm.

[0042] Optionally, the second support member comprises a metal, alloy, or metal oxide material, and the width of each of the support strips in the second support member is 0.1 mm to 1 mm, and each of the support strips has a thickness along a direction perpendicular to the first support member of 0.1 mm to 1 mm.

[0043] Optionally, at least some of the support strips are provided with position restricting portions, and the relative positions between the support strips and the adjacent support strips are restricted by the position restricting portions.

[0044] Optionally, the position regulating portion includes at least one of a protruding structure and a grooved structure, the protruding structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a concave protrusion, and the grooved structure includes an arc-shaped groove, a square groove, and a trapezoidal groove.

[0045] Optionally, the plurality of support strips include a first support strip located at one end, and the position control portion is provided on the side of the other support strips of the plurality of support strips facing the first support strip, and the position control portion has a protruding structure.

[0046] Optionally, the plurality of support strips include two end support strips located at both end portions and an intermediate support strip located between the two end support strips, and each of the intermediate support strips has the position control portion on both sides facing the two end support strips, and each of the end support strips has the position control portion on the side facing the intermediate support strip, and the position control portion has a convex structure.

[0047] Optionally, a first type of position control portion is provided on a first side of each support strip, and a second type of position control portion is provided on a second side of each support strip, the first type of position control portion and the second type of position control portion are complementary in shape, and the first type of position control portion and the second type of position control portion of two adjacent support strips cooperate complementarily.

[0048] Optionally, the plurality of support strips are provided with at least two rows of position restricting portions, and the position restricting portions of each row are provided so as to align along the arrangement direction of the support strips.

[0049] Optionally, the position restriction portions of adjacent rows are provided alternately.

[0050] Optionally, each support strip includes two or more rows of strip bodies, the strip bodies of each row in the plurality of support strips being arranged in parallel, and at least one row of positional regulating portions being provided on the strip bodies of each row. [Brief explanation of the drawings]

[0051] [Figure 1] 1 is a partial cross-sectional structural schematic diagram of a flexible display device according to an embodiment of the present application; [Figure 2] 1 is a structural schematic diagram of a flexible display device according to an embodiment of the present invention in a retracted state; [Figure 3] 1 is a structural schematic diagram of a flexible display device according to an embodiment of the present application in an unfolded state; [Figure 4]2 is a schematic cross-sectional view of a connection portion between a display module and a tensile force applying assembly of a flexible display device according to an embodiment of the present disclosure; [Figure 5] 10 is a schematic cross-sectional view of a flexible display device according to another embodiment of the present disclosure at a connection portion between a display module and a tensile force applying assembly. [Figure 6] 1 is a schematic cross-sectional view of a flexible display device according to an embodiment of the present disclosure at a connection point between a first support member and a pulling portion; [Figure 7] 10 is a schematic cross-sectional view of a flexible display device according to another embodiment of the present disclosure at a connection point between a first support member and a pulling portion; [Figure 8] 1 is a top view structural schematic diagram of a flexible display device according to an embodiment of the present disclosure at a connection point between a first support member and a pulling portion; [Figure 9] 2 is a structural schematic diagram of a first support member in a flexible display device according to an embodiment of the present disclosure; [Figure 10] 1 is a structural schematic diagram of a support assembly according to an embodiment of the present application; [Figure 11] 1 is a cross-sectional structural schematic diagram of a support assembly according to an embodiment of the present application. [Figure 12] FIG. 2 is a partial structural schematic diagram of a second support member in a support assembly according to an embodiment of the present application. [Figure 13] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 14] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 15] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 16] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 17] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 18]FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 19] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 20] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 21] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 22] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. [Figure 23] FIG. 10 is a partial structural schematic diagram of a second support member in a support assembly according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0052] The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, but it should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. Any other embodiments obtained by those skilled in the art based on the embodiments of the present application without paying creative labor shall also fall within the scope of protection of the present application.

[0053] It should be understood that the terms used herein to describe embodiments of the present invention are not intended to limit and / or restrict the scope of the present invention. For example, unless otherwise defined, technical or scientific terms used in this disclosure have ordinary meanings that can be understood by those skilled in the art. As used herein, the terms "first," "second," and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish different components. Unless otherwise clearly indicated in the context, the singular forms "one," "one," or "the," and similar terms do not denote any numerical limitation, but rather indicate the presence of at least one.

[0054] As shown in FIGS. 1, 2 and 3, an embodiment of the present application provides a flexible display device, which includes: A roll shaft 1; The roll sliding area includes a flexible module 20 and a flat area, and the roll sliding area includes a flexible module 20 configured to move around the roll shaft 1 to realize the deployment and storage of the flexible module 20.

[0055] The "roll sliding area" is an area that passes through the roll shaft during the rolling and unfolding movements of the flexible module, and may be referred to as the roll section. Correspondingly, the "flat area" is an area that does not pass through the roll shaft during the rolling and unfolding movements of the flexible module, and may be referred to as the non-roll section.

[0056] The flexible module 20 includes a flexible display screen 2 and a support assembly 3. The support assembly 3 is provided on the side of the flexible display screen 2 facing the surface of the roll shaft 1, and includes a first support member 31 and a second support member 32. The first support member 31 has a bendable plate-like structure. The second support member 32 is provided on the opposite side of the first support member 31 from the flexible display screen 2, and includes a plurality of support strips 321. The plurality of support strips 321 are arranged along the movement direction of the flexible module 20 (the direction indicated by the double arrow in Figure 1 is the direction in which the flexible module 20 moves back and forth around the roll shaft 1), and each support strip 321 extends in the same direction as the roll shaft 1 and is fixed on the first support member 31.

[0057] The flexible display device according to the embodiment of the present application uses a support assembly 3 to support the flexible display screen 2, and the support assembly 3 can be configured to move around a roll shaft 1 to enable the flexible display screen 2 to be unfolded and retracted. By applying a continuous tensile force to the support assembly 3 and supporting the support assembly 3 with the roll shaft 1, the support assembly 3 can be maintained in a taut and flat state, and the reliability of the unfolding and retracting operation of the flexible module 20 can be ensured.

[0058] Specifically, in the support assembly 3, the first support member 31 has a plate-like structure and is adjacent to the rear surface of the flexible display screen 2. Its main function is to fix the size and shape of the flexible display screen 2 and improve the supportability and dynamic rolling reliability of the flexible module 20. Optionally, the second support member 32 may be a plurality of support strips 321 that are independent of each other, and there is no physical connection between the support strips 321. These support strips 321 are arranged near the surface of the roll shaft 1, are parallel to each other, and extend in the same direction as the roll shaft 1, so that the flexible module 20 can roll around the roll shaft 1. During the movement, the design of the independent support strip 321 can minimize the impact of stress on the flexible module 20, improve the rolling reliability of the flexible module 20, and also reduce the repulsive force of the entire flexible module 20, reducing the difficulty of assembling the entire flexible display device and the difficulty of realizing the rolling operation. In addition, while providing a support function, the support strip 321 can also increase the friction force between the flexible module 20 and the roll shaft 1, further improving the stability and reliability of the flexible module 20 when moving around the roll shaft 1 to be wound or unwound.

[0059] To summarize the above, the two-layer support structure of the first support member 31 and the second support member 32 can maintain the flat state of the flexible display screen 2, improve the reliability of the roll of the flexible module 20, improve the reliability when the flexible module 20 moves around the roll shaft 1 to perform the unfolding and retracting operations, and further improve the assembly yield and service life of the flexible display device.

[0060] In some embodiments, the flexible display screen 2 and the first support member 31 may be adhesively fixed, or the first support member 31 and the second support member 32 may also be adhesively fixed, or the first support member 31 and the second support member 32 may be integrally molded.

[0061] For example, as shown in Figures 4 and 5, the flexible display screen 2 may include a flexible display 21 and a cover plate 22, and the cover plate 22 is located on the opposite side of the flexible display 21 from the support assembly 3, and can support and protect the display surface side of the flexible display 21.

[0062] In some embodiments, the flexible display device according to the embodiments of the present application may further include a tension applying assembly (e.g., the traction unit 4, the turning shaft assembly 5, and the fixing unit 6 in FIGS. 1 to 3). As shown in FIGS. 1 to 3, the support assembly 3 includes a first end and a second end opposite to each other, the support assembly 3 rotates around the roll shaft 1 in a direction from the first end to the second end, and the first end of the support assembly 3 is connected to the tension applying assembly.

[0063] Specifically, a first end of the support assembly 3 is connected to a tension force applying assembly, and the tension force applied from the tension force applying assembly and the support of the roll shaft 1 can realize the fixing and rolling movement of the flexible module 20.

[0064] For example, as shown in Figures 1 to 3, the tension force application assembly includes a traction unit 4, a steering shaft assembly 5, and a fixed unit 6, the traction unit 4 includes a third end and a fourth end, the third end is connected to the first support member 31 of the support assembly 3, and the fourth end is connected to the fixed unit 6 around the steering shaft assembly 5, and the roll shaft 1 is movable relative to the fixed unit 6 so that the flexible module 20 is moved around the roll shaft 1 and deployed.

[0065] Exemplarily, the tow part 4 may be a flexible band or a flexible rope.

[0066] For example, the deflection shaft assembly 5 may include one movable shaft 52 and one fixed shaft 51, and the traction unit 4 rotates around the fixed shaft 51 and the movable shaft 52 sequentially so that its extension direction is reversed twice. The relative position of the axis of the fixed shaft 51 and the fixed unit 6 is fixed. For example, the fixed shaft 51 and the fixed unit 6 may be connected to the same part of the housing so that their relative positions are fixed. The relative position of the axis of the movable shaft 52 and the axis of the roll shaft 1 is fixed. For example, the central axis of the movable shaft 52 and the central axis of the roll shaft 1 may be connected via a connecting rod so that their relative positions do not change. The movable shaft 52 and the roll shaft 1 can move synchronously so that the flexible module 20 is moved around the roll shaft 1 and deployed.

[0067] For example, the fixed shaft 51 may be a rollable shaft or a non-rollable cylindrical pin, and similarly, the movable shaft 52 may be a rollable shaft or a non-rollable cylindrical pin. Alternatively, the fixed shaft 51 may be a cylindrical pin, and the movable shaft 52 may be a rollable shaft.

[0068] For example, the roll shaft 1 is a rotatable shaft, and the flexible module 20 and the roll shaft 1 are in vibration-damping contact, and the two can move in conjunction with each other, so that while the flexible module 20 moves around the roll shaft 1, the roll shaft 1 rotates synchronously.

[0069] Specifically, after each reversal of the two reversals, the extension direction of the traction unit 4 is parallel to the extension direction before the reversal. In this way, the traction unit 4 can extend in one dimension as a whole, i.e., between the roll shaft 1 and the fixed unit 6. This further reduces the spatial volume occupied by the roll shaft 1, the traction unit 4, the steering shaft assembly 5, and the fixed unit 6, making it easier to accommodate them within the module housing 7. Meanwhile, the synchronous movement of the movable shaft 52 and the roll shaft 1 away from the fixed unit 6 and the rolling of the roll shaft 1 allow the flexible module 20 to move around the roll shaft 1, which is advantageous for realizing the deployment operation of the flexible module 20.

[0070] For example, the traction unit 4 can maintain a constant tensile force, and the tensile force can pull the flexible module 20, the movable shaft 52, and the roll shaft 1 in a direction approaching the fixed unit 6. This allows the flexible module 20 to be stored.

[0071] For example, as shown in FIG. 1 , the flexible display device further includes a housing 7, the roll shaft 1 and the tensile force applying assembly are both located within the housing 7, the first end of the support assembly 3 is located within the housing 7 and connected to the tensile force applying assembly, and the second end of the support assembly 3 wraps around the roll shaft 1 and protrudes outside the housing 7; that is, the flexible module 20 has one end located within the housing 7 and the other end wraps around the roll shaft 1 and protrudes outside the housing 7.

[0072] For example, the housing 7 may include two parts that are movable relative to each other, where the relative position of the first part to the roll shaft 1 and the movable shaft 52 is fixed, and the relative position of the second part to the fixed part 6 and the fixed shaft 51 is fixed, and when the roll shaft 1 and the movable shaft 52 move relative to the fixed part 6, the first part and the second part of the housing 7 are movable relative to each other.

[0073] Specifically, for example, the fixed part 6 may be a connection site in the second part of the housing 7, and one end of the flexible module 20 is connected to the fixed part 6 via a tension force applying assembly, and the other end of the flexible module 20 rotates around the roll shaft 1 and protrudes out of the housing 7. As shown in FIGS. 1 and 2 , when the movable shaft 52 and the roll shaft 1 move in a direction away from the fixed part 6, the roll shaft 1 rolls, causing the flexible module 20 to protrude out of the housing 7 and become unfolded. As shown in FIGS. 1 and 3 , the flexible module 20 can be moved in a direction approaching the fixed part 6 by being pulled by the towing part 4, resulting in the flexible module 20 being retracted into the housing 7.

[0074] Of course, the rolling movement of the flexible display device according to the embodiment of the present application is not limited to the driving method described above and can be adjusted according to actual needs. For example, the relative position of the fixed part 6 and the rolling shaft 1 may be fixed, and the pulling part 4 may be driven by the reciprocating movement of the movable shaft 52 relative to the rolling shaft 1 to move the flexible module 20.

[0075] In some embodiments, as shown in Figures 4, 5, 6 and 7, the flexible display device according to the embodiments of the present application may further include a first adhesive layer 81 located between the towing portion 4 and the first support member 31, and the towing portion 4 and the first support member 31 are adhered via the first adhesive layer 81.

[0076] For example, an edge of the first support member 31 close to the first end protrudes from an edge of the flexible display screen 2 close to the first end, and the traction section 4 is connected to the portion of the first support member 31 protruding from the flexible display screen 2. In other words, the length of the first support member 31 is greater than the length of the flexible display screen 2, and the portion of the first support member 31 protruding from the flexible display screen 2 along the length direction is used to connect to a tensile force application assembly, and the tensile force application assembly applies a tensile force to the first support member 31, thereby keeping the entire flexible module 20 flat and realizing its rolling movement.

[0077] 4, the towing portion 4 is bonded to the surface of the first support member 31 facing the flexible display screen 2. That is, the bonding portion of the towing portion 4 and the flexible display screen 2 are located on the same side of the first support member 31.

[0078] 5, the traction portion 4 includes a two-layer structure, and the two-layer structure is bonded to both surfaces of the first support member 31. That is, the traction portion 4 is bonded to both surfaces of the first support member 31 and connected thereto.

[0079] Of course, the edge of the first support member 31 closest to the first end may be approximately aligned with the edge of the flexible display screen 2 closest to the first end, and in this case, the traction unit 4 is adhered to the surface of the first support member 31 opposite to the flexible display screen 2. Specifically, "approximately aligned" means that the distance between the two edges is very small and within a set range, for example, the distance between the two edges is within a range of ±1 mm.

[0080] 6, 7 and 8, in some embodiments, a first opening is provided in the first support member 31 along the thickness direction of the first support member 31, and a second opening is provided in the towing portion 4, and the first support member 31 and the towing portion 4 are connected via a connecting member 9 inserted into the first opening and the second opening. In this way, the bonding strength between the first support member 31 and the towing portion 4 can be increased, and therefore the width of the bonding area can be reduced.

[0081] Specifically, the connecting member may be made of a polymer material. For example, the connecting member may include a polymer material having a certain viscosity, such as resin, rubber, plastic, or paint, and may be formed by coating, filling, and subsequent curing. In this way, the connecting member material may be disposed in the first opening and the second opening using a drilling and dispensing process, and when the connecting member material hardens, it can tightly connect the first support member and the towing portion. Specifically, the connecting member material may be silicone rubber, epoxy resin, acrylic resin, polyethylene-based resin, etc.

[0082] For example, the first opening may be a half-through hole that does not penetrate the first support member 31, or a through hole that penetrates the first support member 31, and the second opening may be a through hole that penetrates the traction portion 4.

[0083] In some embodiments, as shown in Figures 4 and 5, the flexible module 20 may further include a second adhesive layer 82 positioned between the second support member 32 and the first support member 31, and the second support member 32 and the first support member 31 are bonded via the second adhesive layer 82.

[0084] For example, the second adhesive layer may include a base layer and adhesive layers disposed on both sides of the base layer, the base layer being made of a polymer material. In other words, the second adhesive layer may have a double-sided adhesive structure.

[0085] Of course, the second adhesive layer is not limited to a double-sided adhesive, and an adhesive material in the form of glue or the like may be used, and the first adhesive layer may be made of the same material as the second adhesive layer so that the bonding process can be easily carried out all at once.

[0086] In some embodiments, the first support member is provided with a lightening opening in the roll sliding area, and as shown in FIGS. 9 and 10 , the first support member 31 may include a roll sliding part 311 located in the roll sliding area and a flat part 312 located in the flat area, the roll sliding part 311 is configured to move around the roll shaft, and the roll sliding part 311 is provided with a lightening opening.

[0087] The "roll sliding portion" is an area of ​​the first support member that passes through the roll shaft during the rolling and unfolding movements, and may be referred to as the roll portion. Correspondingly, the "flat portion" is an area of ​​the first support member that does not pass through the roll shaft during the rolling and unfolding movements, and may be referred to as the non-roll portion.

[0088] Since the lightening opening is provided in the roll sliding portion of the first support member, the flexibility of that portion can be improved, and the reliability of the roll can be increased.

[0089] Alternatively, the first support member may have lightening openings in both the roll sliding area and the flat area, i.e., a patterned design may be applied to both the roll sliding portion 311 and the flat portion 312 of the first support member.

[0090] For example, as shown in FIG. 9, the lightening opening includes at least two rows of through holes 310, the through holes 310 in each row are arranged along the extension direction of the roll shaft, the through holes 310 in odd-numbered rows are at least partially offset from the through holes 310 in even-numbered rows, and the through holes are strip-shaped holes extending along the extension direction of the roll shaft.

[0091] In some embodiments, as shown in FIG. 10 , the second support member 32 is located in the roll sliding area, i.e., the second support member 32 is provided on the roll sliding portion 311 of the first support member 31, in other words, the second support member 32 is provided in the part of the flexible module that rolls around the roll shaft.

[0092] Specifically, the second support member 32 must include at least three support strips 321 .

[0093] Specifically, since the second support member 32 is an independent strip-shaped member arranged in parallel, contact between the second support member 32 and the roll shaft can improve the support for the flexible display screen in the roll sliding area 311, and also strengthen the frictional force between the flexible module and the roll shaft, thereby improving the stability and reliability when the flexible module moves around the roll shaft and is wound up.

[0094] In some embodiments, as shown in FIG. 11 , the support assembly may further include a reinforcing structure 33, which is provided on the opposite side of the first support member 31 from the flexible display screen and is located in a flat area, i.e., on the flat portion 312 of the first support member 31.

[0095] Illustratively, the reinforcing structure 33 is made of the same material as the first support member 31 or the second support member 32. For example, the reinforcing structure 33 may be made of a stainless steel plate (SUS).

[0096] For example, the reinforcing structure 33 and the first support member 31 may be adhesively fixed via a third adhesive layer 83, and the third adhesive layer 83 may be made of the same material as the second adhesive layer 82.

[0097] In some embodiments, the thickness of the reinforcing structure 33 and the thickness of the second support member 32 are approximately the same in a direction perpendicular to the first support member 31, where approximately the same means that the thicknesses of the two are the same or the difference between the thicknesses of the two is 10% or less.

[0098] In some embodiments, the first support member comprises a metal or alloy material, which may be a metal or alloy material having a relatively high Young's modulus, such as, for example, stainless steel, structural steel, titanium alloys, or the like, or a metal having a relatively low Young's modulus, such as, for example, copper and copper alloys, aluminum alloys, magnesium alloys, or the like.

[0099] For example, the thickness of the first support member is 0.02 mm to 0.5 mm, and may be, for example, specifically, 0.03 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, or 0.3 mm.

[0100] Alternatively, the first support member may be a polymer film layer or an inorganic non-metallic layer that has a certain mechanical strength and satisfies the reliability requirements for flexibility, such as an organic polymer material such as a polyimide film or polyurethane foam, or an inorganic non-metallic material such as glass or ceramics.

[0101] In some embodiments, the second support member may include a metal, alloy, or metal oxide material, such as, for example, stainless steel, copper alloy, titanium alloy, etc., or a metal oxide, such as ferrite, nickel oxide, etc. Illustratively, the width of each support strip in the second support member is 0.1 mm to 1 mm, and each support strip has a thickness along a direction perpendicular to the first support member of 0.1 mm to 1 mm.

[0102] Specifically, when the support strip includes a structure such as a position control portion or a protrusion, the "width of each support strip" refers to the width of the main body portion of the support strip (the portion other than the position control portion or the protrusion).

[0103] In some embodiments, as shown in Figures 12 to 23, in the second support member, at least some of the support strips 321 among the multiple support strips 321 are provided with position regulating portions 320, and the relative position between the at least some of the support strips 321 and the adjacent support strips 321 is regulated by the position regulating portions 320.

[0104] For example, the position restricting portion 320 may be part of the support strip 321 and may be integrally molded with the main body of the support strip during manufacturing.

[0105] Specifically, the support strips 321 in the present application have a microscopic structure and are provided independently of one another, and furthermore, in actual installation, it is difficult to ensure the position of each support strip 321 and the spacing between the support strips 321. In the embodiment of the present application, position regulating portions 320 are provided on the support strips 321, and the relative positions of adjacent support strips 321 are regulated by the position regulating portions 320, which makes it easy to determine the positions of adjacent support strips 321 and maintain the spacing, and reduces the difficulty of arranging and fixing the positions of the independent support strips 321 in an actual process.

[0106] For example, the position restriction portion 320 may include at least one of a protruding structure and a recessed groove structure.

[0107] For example, the position restriction portion 320 in FIGS. 12 to 20 has a protruding structure, and the position restriction portion 320 in FIGS. 21 to 23 includes both a protruding structure and a recessed groove structure.

[0108] For example, the convex structure may include an arc-shaped convex, a square-shaped convex, a trapezoidal convex, a concave-shaped convex, etc. For example, the position regulating portion 320 in Figures 12, 15 to 20 is an arc-shaped convex, the position regulating portion 320 in Figure 13 is a rectangular convex, the position regulating portion 320 in Figure 14 is a trapezoidal convex, the position regulating portion 320 in Figure 22 includes a concave-shaped convex 3203, and the position regulating portion 320 in Figure 23 includes a concave-shaped convex 3206.

[0109] 21 includes an arc-shaped groove 3202.

[0110] In some embodiments, as shown in Figures 12 to 14, the multiple support strips 321 include a first support strip 3211 located at one end, and all of the multiple support strips 321 other than the first support strip 3211 have a position control portion 320 on the side facing the first support strip 3211, and the position control portion 320 has a convex structure.

[0111] Specifically, the "end on one side" refers to one end along the arrangement direction of the support strips, and the "first support strip" refers to one end support strip. In other words, in the embodiment of the present application, except for the one end support strip, all of the other support strips are provided with a position restricting portion on the side facing the end. This ensures that the relative positions of any two adjacent support strips can be restricted by the position restricting portion.

[0112] 15 and 16, the plurality of support strips 321 include two end support strips 3212 located at both end portions and a middle support strip 3213 located between the two end support strips 3212. Specifically, the "end portions" refer to both ends along the arrangement direction of the support strips, and therefore the two end support strips refer to the support strips located at both ends.

[0113] For example, each intermediate support strip 3213 has a position regulating portion 320 on both sides facing the two end support strips 3212, and each end support strip 3212 has a position regulating portion 320 on the side facing the intermediate support strip 3213, and the position regulating portion 320 has a protruding structure.

[0114] By arranging them as described above, two position regulating portions 320 are provided between every two adjacent support strips. Specifically, these two position regulating portions 320 not only regulate the gap between the two adjacent support strips, but also the relative positional relationship between the two position regulating portions 320 (for example, the two position regulating portions 320 being aligned or offset in a direction perpendicular to the support strips) is advantageous in maintaining the two support strips aligned in the extension direction.

[0115] In some embodiments, a first type of position control portion is provided on a first side of each support strip, and a second type of position control portion is provided on a second side of each support strip, the first type of position control portion and the second type of position control portion are complementary in shape, and the first type of position control portion and the second type of position control portion of two adjacent support strips cooperate in a complementary manner.

[0116] Specifically, the first type position control portion and the second type position control portion of two adjacent support strips work together in a complementary manner to control the positions of the two adjacent support strips relative to each other, and further, to prevent misalignment between adjacent support strips, which is advantageous in reducing the difficulty of aligning the support strips and in maintaining the relative positional relationship between the support strips.

[0117] For example, in FIG. 21, a first type position restricting portion and a second type position restricting portion are provided on both sides of each support strip 321, and the first type position restricting portion and the second type position restricting portion are respectively an arc-shaped protrusion 3201 and an arc-shaped groove 3202. By using the arc-shaped protrusion 3201 and the arc-shaped groove 3202 to cooperate with these two complementary shaped position restricting portions 320, the relative positional relationship between the support strips 321 can be maintained. In FIG. 22, a first type position restricting portion and a second type position restricting portion are provided on both sides of each support strip 321, and the first type position restricting portion and the second type position restricting portion are respectively an arc-shaped protrusion 3204 and a concave-shaped protrusion 3203. The groove portion of 02 is an arc-shaped groove, and by using the arc-shaped protrusion 3204 and the concave-shaped protrusion 3203 to cooperate with these two complementary shaped position regulating portions 320, the relative positional relationship between the support strips 321 can be maintained. In Figure 23, a first type of position regulating portion and a second type of position regulating portion are provided on both sides of each support strip 321, and the first type of position regulating portion and the second type of position regulating portion are respectively trapezoidal protrusion 3205 and concave-shaped protrusion 3206. The groove portion of concave-shaped protrusion 3206 is a trapezoidal groove, and by using the trapezoidal protrusion 3205 and concave-shaped protrusion 3206 to cooperate with these two complementary shaped position regulating portions 320, the relative positional relationship between the support strips 321 can be maintained.

[0118] 17 to 19, at least two rows of position restriction portions 320 are provided on a plurality of support strips 321, and the at least two rows of position restriction portions 320 are provided along the extension direction of the support strips 321, and the position restriction portions 320 of each row are provided so as to be aligned along the arrangement direction of the support strips 321. For example, two rows of position restriction portions 320 are provided on a plurality of support strips 321 in FIG. 17, and three rows of position restriction portions 320 are provided on a plurality of support strips 321 in FIG. 18.

[0119] Specifically, according to the design of this embodiment, the multiple rows of position restriction portions 320 can improve the stability and consistency of the spacing between the support strips 321 in the extending direction of the support strips 321.

[0120] In some embodiments, adjacent rows of the position restricting portions 320 are alternated, as shown in Figure 19. In other words, the position restricting portions 320 of the support strips 321 may be offset from one another so that two or more rows of the position restricting portions 320 are formed.

[0121] 20, each support strip 321 may include two or more rows of strip bodies 3210, with the strip bodies 3210 in each row of the plurality of support strips 321 arranged in parallel, and at least one row of position restricting portions 320 provided on the strip bodies 3210 in each row. In other words, it can be said that one row of support strip 321 is divided into two or more rows of strip bodies 3210, and the strip bodies 3210 in each row are provided with position restricting portions 320 so as to maintain the gaps and / or relative positions between the strip bodies 3210 in each row.

[0122] In the present embodiment, the intermittent design of each support strip 321 can avoid or eliminate the problem of breakage of the support strip 321 during bending or other flexible movements, thereby improving the reliability of the bending movement of the support assembly 3 itself. Furthermore, each row of strips 3210 is provided with at least one row of position restriction portions 320, so that the gaps and / or relative positions between the strips 3210 in each row can be maintained.

[0123] Specifically, the flexible display device according to the above embodiments of the present application can be applied to flexible display products such as flexible OLED, flexible mini-LED, flexible Micro-LED, or flexible QLED, and specifically, can be applied to products that can be used as roll displays, such as mobile phones, tablet PCs, or notebooks.

[0124] In another aspect, as shown in FIG. 9 , an embodiment of the present application further provides a support assembly 3, which is configured to be provided on the non-display side of the flexible display screen, and includes a first support member 31 and a second support member 32, wherein the first support member 31 has a bendable plate-like structure, and the second support member 32 is provided on the opposite side of the first support member 31 from the flexible display screen, and includes a plurality of support strips 321, which are arranged along a first direction, and each support strip 321 has the same extension direction and is fixed on the first support member 31.

[0125] Specifically, in the support assembly 3 of the present application, the first support member 31 has a plate-like structure and is adjacent to the rear surface of the flexible display screen. Its main function is to fix the size and shape of the flexible display screen and improve the supportability and dynamic rolling reliability of the flexible module. Optionally, the second support member 32 may be a plurality of independent support strips 321, with no physical connection between each support strip 321, and these support strips 321 are parallel to each other and extend in the same direction. During the rolling of the flexible display screen, the design of the independent support strips 321 can minimize the impact of stress on the flexible module, improve the reliability of the flexibility of the flexible module, and also reduce the repulsive force of the entire flexible module, making it easier to assemble the entire rolling display device and achieve flexible operation. In addition, the support strips 321, while providing the support function, can also strengthen the frictional force between the flexible display screen and other structures on the rear side (such as the rolling shaft for rolling), further improving the reliability and reliability of the rolling operation of the flexible module.

[0126] To sum up, in the support assembly 3 of the present application, the two-layer support structure of the first support member 31 and the second support member 32 can maintain the flat state of the flexible display screen, while improving the reliability of the flexibility and rolling of the flexible display screen, improving the reliability of the flexible rolling operation of the flexible display screen, and improving the assembly yield and service life of the rolling display device.

[0127] For example, in an embodiment of the present application, the first direction may correspond to the extension direction of one side edge of the flexible display screen, for example, the arrangement direction of the multiple support strips 321 corresponds to the extension direction of one side edge of the flexible display screen, and the extension direction of each support strip 321 corresponds to the extension direction of the other side edge of the flexible display screen, and the flexible display screen can be rolled or unfolded around an axis, and the extension direction of each support strip 321 corresponds to the extension direction of the axis.

[0128] In some embodiments, the first support member 31 is intended to cover the entire rear surface of the flexible display screen, i.e., the first support member 31 may have substantially the same shape and area as the flexible display screen, and the second support member 32 on the opposite side of the first support member 31 from the flexible display screen may be uniformly distributed over the entire first support member 31 or may be located only in a partial area of ​​the first support member 31, which can be determined according to actual product needs.

[0129] Illustratively, the support assembly according to the embodiment of the present application is configured to move around the roll shaft together with the flexible display screen to realize the deployment and storage of the flexible display screen. As shown in Figures 9 and 10, in the support assembly according to the embodiment of the present application, the first support member 31 may include a roll sliding portion 311 and a flat portion 312, the roll sliding portion 311 is configured to move around the roll shaft, and a lightening opening is provided in the roll sliding portion 311.

[0130] The "roll sliding portion" is an area that passes through the roll shaft when the first support member rolls and unfolds together with the flexible display screen, and may be referred to as the roll portion. Correspondingly, the "flat portion" is an area that does not pass through the roll shaft when the first support member rolls and unfolds, and may be referred to as the non-roll portion.

[0131] Since the roll sliding portion 311 is provided with a lightening opening, the flexibility of that portion can be improved, and the reliability of the roll can be increased.

[0132] Alternatively, the first support member 21 may have a patterned design over the entire surface thereof, with the lightening openings being provided in both the roll sliding portion 311 and the flat portion 312 .

[0133] For example, as shown in FIG. 9, the lightening opening includes at least two rows of through holes 310, the through holes 310 in each row are arranged along the extension direction of the roll shaft, the through holes 310 in odd-numbered rows are at least partially offset from the through holes 310 in even-numbered rows, and the through holes are strip-shaped holes extending along the extension direction of the roll shaft.

[0134] For example, as shown in Figures 10 and 11, the second support member 32 is provided on the roll sliding portion 311 of the first support member 31, i.e., the second support member 32 is provided at the portion of the flexible module that rolls around the roll shaft.

[0135] Specifically, the second support member 32 must include at least three support strips 321 .

[0136] Specifically, since the second support member 32 is an independent strip-shaped member arranged in parallel, contact between the second support member 32 and the roll shaft can improve the support for the flexible display screen in the roll sliding area 311, and also strengthen the frictional force between the flexible module and the roll shaft, thereby improving the stability and reliability when the flexible module moves around the roll shaft and is wound up.

[0137] In some embodiments, the flexible display screen and the first support member 31 may be adhesively fixed, and the first support member 31 and the second support member 32 may also be adhesively fixed.

[0138] In some embodiments, as shown in FIG. 11 , the support assembly may further include a reinforcing structure 33, which is provided on the opposite side of the first support member 31 from the flexible display screen and is located on the planar portion 312 of the first support member 31.

[0139] Illustratively, the reinforcing structure 33 is made of the same material as the first support member 31 or the second support member 32. For example, the reinforcing structure 33 may be made of a stainless steel plate (SUS).

[0140] For example, the first support member 31 and the second support member 32 are adhesively fixed via a second adhesive layer 82, and the reinforcing structure 33 and the first support member 31 are adhesively fixed via a third adhesive layer 83, which may be made of the same material as the second adhesive layer 82.

[0141] In some embodiments, the thickness of the reinforcing structure 33 and the thickness of the second support member 32 are approximately the same in a direction perpendicular to the first support member 31, where approximately the same means that the thicknesses of the two are the same or the difference between the thicknesses of the two is 10% or less.

[0142] In some embodiments, the first support member comprises a metal or alloy material, which may be a metal or alloy material having a relatively high Young's modulus, such as, for example, stainless steel, structural steel, titanium alloys, or the like, or a metal having a relatively low Young's modulus, such as, for example, copper and copper alloys, aluminum alloys, magnesium alloys, or the like.

[0143] For example, the thickness of the first support member is 0.02 mm to 0.5 mm, and may be, for example, specifically, 0.03 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, or 0.3 mm.

[0144] Alternatively, the first support member may be a polymer film layer or an inorganic non-metallic layer that has a certain mechanical strength and satisfies the reliability requirements for flexibility, such as an organic polymer material such as a polyimide film or polyurethane foam, or an inorganic non-metallic material such as glass or ceramics.

[0145] In some embodiments, the second support member may comprise a metal, alloy, or metal oxide material, such as, for example, specifically, stainless steel, copper alloy, titanium alloy, or the like, or a metal oxide, such as ferrite, nickel oxide, or the like.

[0146] Illustratively, the width of each support strip in the second support member is 0.1 mm to 1 mm, and the thickness of each support strip along a direction perpendicular to the first support member is 0.1 mm to 1 mm.

[0147] Specifically, when the support strip includes a structure such as a position control portion or a protrusion, the "width of each support strip" refers to the width of the main body portion of the support strip (the portion other than the position control portion or the protrusion).

[0148] In some embodiments, as shown in Figures 12 to 23, in the second support member, at least some of the support strips 321 among the multiple support strips 321 are provided with position regulating portions 320, and the relative position between the at least some of the support strips 321 and the adjacent support strips 321 is regulated by the position regulating portions 320.

[0149] For example, the position restricting portion 320 may be part of the support strip 321 and may be integrally molded with the main body of the support strip during manufacturing.

[0150] Specifically, the support strips 321 in the present application have a microscopic structure and are provided independently of one another, and furthermore, in actual installation, it is difficult to ensure the position of each support strip 321 and the spacing between the support strips 321. In the embodiment of the present application, position regulating portions 320 are provided on the support strips 321, and the relative positions of adjacent support strips 321 are regulated by the position regulating portions 320, which makes it easy to determine the positions of adjacent support strips 321 and maintain the spacing, and reduces the difficulty of arranging and fixing the positions of the independent support strips 321 in an actual process.

[0151] For example, the position restriction portion 320 may include at least one of a protruding structure and a recessed groove structure.

[0152] For example, the position restriction portion 320 in FIGS. 12 to 20 has a protruding structure, and the position restriction portion 320 in FIGS. 21 to 23 includes both a protruding structure and a recessed groove structure.

[0153] For example, the convex structure may include an arc-shaped convex, a square-shaped convex, a trapezoidal convex, a concave-shaped convex, etc. For example, the position regulating portion 320 in Figures 12, 15 to 20 is an arc-shaped convex, the position regulating portion 320 in Figure 13 is a rectangular convex, the position regulating portion 320 in Figure 14 is a trapezoidal convex, the position regulating portion 320 in Figure 22 includes a concave-shaped convex 3203, and the position regulating portion 320 in Figure 23 includes a concave-shaped convex 3206.

[0154] 21 includes an arc-shaped groove 3202.

[0155] In some embodiments, as shown in Figures 12 to 14, the multiple support strips 321 include a first support strip 3211 located at one end, and all of the multiple support strips 321 other than the first support strip 3211 have a position control portion 320 on the side facing the first support strip 3211, and the position control portion 320 has a convex structure.

[0156] Specifically, the "end on one side" refers to one end along the arrangement direction of the support strips, and the "first support strip" refers to one end support strip. In other words, in the embodiment of the present application, except for the one end support strip, all of the other support strips are provided with a position restricting portion on the side facing the end. This ensures that the relative positions of any two adjacent support strips can be restricted by the position restricting portion.

[0157] In some other embodiments, as shown in Figures 15 and 16, the multiple support strips 321 include two end support strips 3212 located at both end portions and an intermediate support strip 3213 located between the two end support strips 3212, and each intermediate support strip 3213 has a position control portion 320 on both sides facing the two end support strips 3212, and each end support strip 3212 has a position control portion 320 on the side facing the intermediate support strip 3213, and the position control portion 320 has a convex structure.

[0158] Specifically, the "ends on both sides" refer to both ends along the arrangement direction of the support strips, and therefore the two end support strips refer to the support strips located at both ends.

[0159] By arranging them as described above, two position regulating portions 320 are provided between every two adjacent support strips. Specifically, these two position regulating portions 320 not only regulate the gap between the two adjacent support strips, but also the relative positional relationship between the two position regulating portions 320 (for example, the two position regulating portions 320 being aligned or offset in a direction perpendicular to the support strips) is advantageous in maintaining the two support strips aligned in the extension direction.

[0160] In some embodiments, a first type of position control portion is provided on a first side of each support strip, and a second type of position control portion is provided on a second side of each support strip, the first type of position control portion and the second type of position control portion are complementary in shape, and the first type of position control portion and the second type of position control portion of two adjacent support strips cooperate in a complementary manner.

[0161] Specifically, the first type position control portion and the second type position control portion of two adjacent support strips work together in a complementary manner to control the positions of the two adjacent support strips relative to each other, and further, to prevent misalignment between adjacent support strips, which is advantageous in reducing the difficulty of aligning the support strips and in maintaining the relative positional relationship between the support strips.

[0162] For example, in FIG. 21, a first type position restricting portion and a second type position restricting portion are provided on both sides of each support strip 321, and the first type position restricting portion and the second type position restricting portion are respectively an arc-shaped protrusion 3201 and an arc-shaped groove 3202. By using the arc-shaped protrusion 3201 and the arc-shaped groove 3202 to cooperate with these two complementary shaped position restricting portions 320, the relative positional relationship between the support strips 321 can be maintained. In FIG. 22, a first type position restricting portion and a second type position restricting portion are provided on both sides of each support strip 321, and the first type position restricting portion and the second type position restricting portion are respectively an arc-shaped protrusion 3204 and a concave-shaped protrusion 3203. The groove portion of 02 is an arc-shaped groove, and by using the arc-shaped protrusion 3204 and the concave-shaped protrusion 3203 to cooperate with these two complementary shaped position regulating portions 320, the relative positional relationship between the support strips 321 can be maintained. In Figure 23, a first type of position regulating portion and a second type of position regulating portion are provided on both sides of each support strip 321, and the first type of position regulating portion and the second type of position regulating portion are respectively trapezoidal protrusion 3205 and concave-shaped protrusion 3206. The groove portion of concave-shaped protrusion 3206 is a trapezoidal groove, and by using the trapezoidal protrusion 3205 and concave-shaped protrusion 3206 to cooperate with these two complementary shaped position regulating portions 320, the relative positional relationship between the support strips 321 can be maintained.

[0163] In some embodiments, as shown in reference Figures 17 to 19, at least two rows of position restriction portions 320 are provided on a plurality of support strips 321, and the at least two rows of position restriction portions 320 are provided along the extension direction of the support strips 321, and the position restriction portions 320 of each row are aligned along the arrangement direction of the support strips 321. For example, two rows of position restriction portions 320 are provided on the plurality of support strips 321 in Figure 17, and three rows of position restriction portions 320 are provided on the plurality of support strips 321 in Figure 18.

[0164] Specifically, according to the design of this embodiment, the multiple rows of position restriction portions 320 can improve the stability and consistency of the spacing between the support strips 321 in the extending direction of the support strips 321.

[0165] In some embodiments, adjacent rows of the position restricting portions 320 are alternated, as shown in Figure 19. In other words, the position restricting portions 320 of the support strips 321 may be offset from one another so that two or more rows of the position restricting portions 320 are formed.

[0166] 20, each support strip 321 may include two or more rows of strip bodies 3210, with the strip bodies 3210 in each row of the plurality of support strips 321 arranged in parallel, and at least one row of position restricting portions 320 provided on the strip bodies 3210 in each row. In other words, it can be said that one row of support strip 321 is divided into two or more rows of strip bodies 3210, and the strip bodies 3210 in each row are provided with position restricting portions 320 so as to maintain the gaps and / or relative positions between the strip bodies 3210 in each row.

[0167] In the present embodiment, the intermittent design of each support strip 321 can avoid or eliminate the problem of breakage of the support strip 321 during bending or other flexible movements, thereby improving the reliability of the bending movement of the support assembly 3 itself. Furthermore, each row of strips 3210 is provided with at least one row of position restriction portions 320, so that the gaps and / or relative positions between the strips 3210 in each row can be maintained.

[0168] Specifically, the support assembly according to the embodiment of the present application is applicable to flexible displays such as flexible OLED, flexible mini-LED, flexible Micro-LED, or flexible QLED, and is specifically applicable to products that can be used as roll displays, such as mobile phones, tablet PCs, or notebooks.

[0169] It should be noted that in some embodiments of the present disclosure, the flexible display device may further include other structures, which can be determined according to actual needs, and the embodiments of the present disclosure do not limit this. Furthermore, the embodiments of the present disclosure are merely examples given for specific implementations, and the inventive aspects of the present application are not limited to the above-mentioned embodiments. For example, new embodiments can be formed by disassembling or combining the embodiments, all of which fall within the scope of protection of the technical solution of the present application. Furthermore, the drawings provided in the embodiments of the present application are merely schematic diagrams, and the actual dimensions and proportions of each structure are not limited to the measured dimensions in the drawings.

[0170] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application, and the present application intends to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. A flexible display device, A roll shaft; a flexible module including a roll sliding area and a flat area, the roll sliding area being configured to move around the roll shaft to realize the deployment and storage of the flexible module, the flexible module including a flexible display screen and a support assembly, the support assembly being provided on a side of the flexible display screen facing the surface of the roll shaft, the support assembly including a first support member and a second support member, the first support member having a bendable plate-like structure, the second support member being provided on the first support member on the opposite side to the flexible display screen, the second support member including a plurality of support strips arranged along a moving direction of the flexible module, each support strip having an extension direction coinciding with the roll shaft, and the flexible module being fixed on the first support member; further comprising a tension application assembly; the support assembly includes opposed first and second ends, the support assembly rotates around the roll shaft in a direction from the first end to the second end, and the first end is connected to the tension application assembly; the tension application assembly includes a traction section, a steering shaft assembly, and a stationary section; the traction portion includes a third end and a fourth end, the third end being connected to the first support member and the fourth end being connected to the fixed portion around the steering shaft assembly; the roll shaft is movable relative to the fixed part such that the flexible module is moved around the roll shaft and deployed; The flexible display device further includes a first adhesive layer positioned between the towing portion and the first support member, and the towing portion and the first support member are bonded to each other via the first adhesive layer; A flexible display device, wherein a first opening is provided in the first support member along a thickness direction of the first support member, and a second opening is provided in the traction portion, the first support member and the traction portion are connected via a connecting member inserted into the first opening and the second opening, and the connecting member is made of a polymer material.

2. The deflection shaft assembly includes one movable shaft and one fixed shaft, and the traction unit rotates around the fixed shaft and the movable shaft so that the extension direction is reversed twice; The flexible display device according to claim 1 , wherein the relative position between the axis of the fixed shaft and the fixed portion is fixed, and the relative position between the axis of the movable shaft and the axis of the roll shaft is fixed.

3. 2. The flexible display device of claim 1, wherein an edge of the first support member close to the first end protrudes from an edge of the flexible display screen close to the first end, and the traction portion is connected to the portion of the first support member protruding from the flexible display screen.

4. 2. The flexible display device of claim 1, wherein an edge of the first support member near the first end and an edge of the flexible display screen near the first end are substantially aligned, and the traction portion is adhered to a surface of the first support member opposite the flexible display screen.

5. 2. The flexible display device according to claim 1, wherein the first opening is a half-through hole that does not penetrate the first support member or a through hole that penetrates the first support member, and the second opening is a through hole that penetrates the traction portion.

6. a housing, the roll shaft and the tension application assembly being located within the housing; The flexible display device of claim 1 , wherein a first end of the support assembly is located within the housing, and a second end of the support assembly rotates around the roll shaft and protrudes outside the housing.

7. The flexible display device according to claim 1 , wherein the second support member is located in the roll-sliding area.

8. the support assembly further includes a reinforcing structure, the reinforcing structure being disposed on a side of the first support member opposite the flexible display screen and located in the flat area; the reinforcing structure is made of the same material as the first support member or the second support member; The flexible display device of claim 7 , wherein a thickness of the reinforcing structure and a thickness of the second support member are substantially the same along a direction perpendicular to the first support member.

9. The present invention further includes a second adhesive layer positioned between the second support member and the first support member, wherein the second support member and the first support member are bonded to each other via the second adhesive layer; The flexible display device according to any one of claims 1 to 6, wherein the second adhesive layer includes a base layer and an adhesive layer located on both sides of the base layer, and the base layer is made of a polymer material.

Images