A flexible display device and support assembly

Abstract

The application relates to the technical field of display, and discloses a flexible display device and a supporting assembly, which aims to improve the structure of a rollable display and improve the reliability of the rolling and unfolding actions of the rollable display. The flexible display device comprises a roller shaft, a flexible module, a flexible display screen and a supporting assembly. The flexible module comprises a rolling and sliding area and a planar area, the rolling and sliding area is configured to move around the roller shaft to realize the unfolding and rolling of the flexible module, the flexible module comprises the flexible display screen and the supporting assembly, the supporting assembly is arranged on the surface side of the flexible display screen facing the roller shaft, and comprises a first supporting piece and a second supporting piece. The first supporting piece is a bendable plate structure, the second supporting piece is arranged on the side of the first supporting piece away from the flexible display screen, comprises a plurality of supporting strips, the plurality of supporting strips are arranged along the moving direction of the flexible module, each supporting strip is consistent with the extension direction of the roller shaft and is fixed on the first supporting piece.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a flexible display device and its support assembly. Background Technology

[0002] Rollable displays have attracted widespread attention as a new form of flexible display application. The rolling action can be achieved through the application of continuous tension and a rotatable axis. Displays suitable for rollable displays generally require a support structure to assist in the rolling and unfolding actions; the design of the support structure has a significant impact on the rolling implementation method and reliability of the rollable display. Summary of the Invention

[0003] This application discloses a flexible display device and support assembly, aiming to improve the structure of a rollable display and enhance the reliability of its rolling and unfolding actions.

[0004] In a first aspect, embodiments of this application provide a flexible display device, comprising:

[0005] Roller shaft;

[0006] A flexible module includes a sliding area and a planar area. The sliding area is configured to move around a roller shaft to unfold and retract the flexible module. The flexible module includes a flexible display screen and a support assembly. The support assembly is disposed on the surface of the flexible display screen facing the roller shaft and 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 disposed on the side of the first support member away from the flexible display screen and includes multiple support bars. The multiple support bars are arranged along the moving direction of the flexible module, and each support bar is aligned with the extending direction of the roller shaft and fixed to the first support member.

[0007] Optionally, the flexible display device further includes a tension-applying component;

[0008] The support assembly includes a first end and a second end disposed opposite to each other; the support assembly passes around the roller shaft in a direction from the first end to the second end, and the first end is connected to the tension application assembly.

[0009] Optionally, the tension-applying assembly includes a traction unit, a steering shaft assembly, and a fixing unit;

[0010] The traction unit includes a third end and a fourth end. The third end is connected to the first support member, and the fourth end bypasses the steering shaft assembly and is connected to the fixing part.

[0011] The roller can move relative to the fixed part to drive the flexible module to move and unfold around the roller.

[0012] Optionally, the steering shaft assembly includes a moving shaft and a fixed shaft; the traction unit bypasses the fixed shaft and the moving shaft so that the extension direction is reversed twice;

[0013] The relative position of the axis of the fixed shaft to the fixed part is fixed, and the relative position of the axis of the moving shaft to the axis of the roller shaft is fixed.

[0014] Optionally, the flexible display device further includes a first adhesive layer located between the traction part and the first support member, wherein the traction part and the first support member are bonded together by the first adhesive layer.

[0015] Optionally, the edge of the first support member near the first end extends beyond the edge of the flexible display screen near the first end, and the traction part is connected to the portion of the first support member that extends beyond the flexible display screen.

[0016] Optionally, the traction part is bonded to the side surface of the first support member facing the flexible display screen.

[0017] Optionally, the traction part includes a double-layer structure, which is bonded to both sides of the first support member.

[0018] Optionally, the edge of the first support member near the first end is approximately aligned with the edge of the flexible display screen near the first end; the traction part is bonded to the surface of the first support member opposite to the flexible display screen.

[0019] Optionally, along the thickness direction of the first support member, the first support member has a first opening, and the traction part has a second opening. The first support member and the traction part are connected by a connector that is inserted into the first opening and the second opening; the connector is made of polymer material.

[0020] Optionally, the first opening is a semi-through hole that does not penetrate the first support member or a through hole that penetrates the first support member; the second opening is a through hole that penetrates the traction part.

[0021] Optionally, the flexible display device further includes a housing, within which the roller and the tension-applying assembly are located;

[0022] The first end of the support assembly is located inside the housing, and the second end of the support assembly passes around the roller and extends out of the housing.

[0023] Optionally, the first support member has a hollowed-out opening in the sliding area.

[0024] Optionally, the first support member has hollowed-out openings in both the rolling area and the planar area.

[0025] Optionally, the hollow opening includes at least two rows of through holes, each row of through holes being arranged along the extension direction of the roller shaft, with the odd-numbered rows of through holes being at least partially staggered from the even-numbered rows of through holes; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

[0026] Optionally, the second support member is located in the sliding area.

[0027] Optionally, the support assembly further includes a reinforcing structure disposed on the side of the first support member opposite to the flexible display screen and located in the planar area.

[0028] Optionally, the reinforcing structure is made of the same material as the first support or the second support.

[0029] Optionally, the thickness of the reinforcing structure is approximately the same as the thickness of the second support member along the direction perpendicular to the first support member.

[0030] Optionally, the flexible display device further includes a second adhesive layer located between the second support member and the first support member, wherein the second support member and the first support member are bonded together by the second adhesive layer;

[0031] The second adhesive layer includes a substrate layer and adhesive layers located on both sides of the substrate layer, wherein the substrate layer is a polymer material.

[0032] Optionally, the first support member may be made of metal or alloy material, and the thickness of the first support member may be 0.02mm-0.5mm.

[0033] Optionally, the second support member comprises a metal, alloy, or metal oxide material, wherein the width of each support bar in the second support member is 0.1mm-1mm, and the thickness of each support bar along the direction perpendicular to the first support member is 0.1mm-1mm.

[0034] Optionally, at least some of the support bars are provided with limiting portions, and the relative positions between the at least some support bars and their adjacent support bars are defined by the limiting portions.

[0035] Optionally, the limiting part includes at least one of a protrusion structure and a groove structure; the protrusion structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a U-shaped protrusion; the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove.

[0036] Optionally, the plurality of support bars includes a first support bar located at one end; among the plurality of support bars, the other support bars besides the first support bar are provided with the limiting portion facing the first support bar, and the limiting portion is a protruding structure.

[0037] Optionally, the plurality of support bars includes two end support bars located at both ends and an intermediate support bar located between the two end support bars; each intermediate support bar is provided with a limiting part on both sides facing the two end support bars, and each end support bar is provided with a limiting part on one side facing the intermediate support bar, wherein the limiting part is a protruding structure.

[0038] Optionally, each support bar has a first type of limiting part on its first side and a second type of limiting part on its second side, the first type of limiting part and the second type of limiting part having complementary shapes; the first type of limiting part and the second type of limiting part of two adjacent support bars complement each other.

[0039] Optionally, the plurality of support bars are provided with at least two rows of limiting parts, and each row of limiting parts is aligned along the arrangement direction of the support bars.

[0040] Optionally, the limiting parts of adjacent rows are alternately set.

[0041] Optionally, each support bar includes two or more bar segments, with each bar segment arranged side by side, and each row of bar segments having at least one row of limiting parts.

[0042] This application embodiment also provides a support component, which is configured to be disposed on the non-display side of a flexible display screen, including a first support member and a second support member; the first support member is a bendable plate-like structure; the second support member is disposed on the side of the first support member away from the flexible display screen, and includes a plurality of support strips, which are arranged along a first direction, and the extension direction of each support strip is consistent and fixed on the first support member.

[0043] Optionally, the support assembly is configured to move together with the flexible display screen about the roller axis to realize the unfolding and retraction of the flexible display screen; the first support member includes a sliding part and a flat part, the sliding part being configured to move about the roller axis;

[0044] The sliding part is provided with a hollow opening; or, both the sliding part and the flat part are provided with hollow openings.

[0045] Optionally, the hollow opening includes at least two rows of through holes, each row of through holes being arranged along the extension direction of the roller shaft, with the odd-numbered rows of through holes being at least partially staggered from the even-numbered rows of through holes; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

[0046] Optionally, the second support member is located in the sliding section.

[0047] Optionally, the support assembly further includes a reinforcing structure disposed on the side of the first support member opposite to the flexible display screen and located in the planar portion.

[0048] Optionally, the reinforcing structure is made of the same material as the first support or the second support.

[0049] Optionally, the thickness of the reinforcing structure is approximately the same as the thickness of the second support member along the direction perpendicular to the first support member.

[0050] Optionally, the first support member may be made of metal or alloy material, and the thickness of the first support member may be 0.02mm-0.5mm.

[0051] Optionally, the second support member comprises a metal, alloy, or metal oxide material, wherein the width of each support bar in the second support member is 0.1mm-1mm, and the thickness of each support bar along the direction perpendicular to the first support member is 0.1mm-1mm.

[0052] Optionally, at least some of the support bars are provided with limiting portions, and the relative position between the support bar and its adjacent support bars is defined by the limiting portions.

[0053] Optionally, the limiting part includes at least one of a protrusion structure and a groove structure; the protrusion structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a U-shaped protrusion; the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove.

[0054] Optionally, the plurality of support bars includes a first support bar located at one end; among the plurality of support bars, the other support bars besides the first support bar are provided with the limiting portion facing the first support bar, and the limiting portion is a protruding structure.

[0055] Optionally, the plurality of support bars includes two end support bars located at both ends and an intermediate support bar located between the two end support bars; each intermediate support bar is provided with a limiting part on both sides facing the two end support bars, and each end support bar is provided with a limiting part on one side facing the intermediate support bar, wherein the limiting part is a protruding structure.

[0056] Optionally, each support bar has a first type of limiting part on its first side and a second type of limiting part on its second side, the first type of limiting part and the second type of limiting part having complementary shapes; the first type of limiting part and the second type of limiting part of two adjacent support bars complement each other.

[0057] Optionally, the plurality of support bars are provided with at least two rows of limiting parts, and each row of limiting parts is aligned along the arrangement direction of the support bars.

[0058] Optionally, the limiting parts of adjacent rows are alternately set.

[0059] Optionally, each support bar includes two or more bar segments, with each bar segment arranged side by side, and each row of bar segments having at least one row of limiting parts. Attached Figure Description

[0060] Figure 1 This is a partial cross-sectional structural diagram of a flexible display device provided in an embodiment of this application;

[0061] Figure 2 This is a schematic diagram of the structure of a flexible display device in a collapsed state, as provided in an embodiment of this application.

[0062] Figure 3 This is a schematic diagram of the structure of a flexible display device in its unfolded state, as provided in an embodiment of this application.

[0063] Figure 4 A schematic cross-sectional view of the connection between the display module and the tensioning component of a flexible display device provided in an embodiment of this application;

[0064] Figure 5 A schematic cross-sectional view of the connection between the display module and the tensioning component of a flexible display device provided in another embodiment of this application;

[0065] Figure 6 A schematic cross-sectional view of a flexible display device at the connection between the first support member and the traction part, provided in an embodiment of this application;

[0066] Figure 7 A cross-sectional structural diagram of a flexible display device at the connection between the first support member and the traction part, provided in another embodiment of this application;

[0067] Figure 8 A top view of the connection between the first support member and the traction part of a flexible display device provided in an embodiment of this application;

[0068] Figure 9 This is a schematic diagram of the structure of the first support member in a flexible display device provided in an embodiment of this application;

[0069] Figure 10 This is a schematic diagram of the structure of a support component provided in an embodiment of this application;

[0070] Figure 11 This is a schematic diagram of a cross-sectional structure of a support component provided in an embodiment of this application;

[0071] Figure 12This is a partial structural diagram of a second support member in a support assembly provided in an embodiment of this application;

[0072] Figure 13 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0073] Figure 14 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0074] Figure 15 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0075] Figure 16 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0076] Figure 17 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0077] Figure 18 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0078] Figure 19 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0079] Figure 20 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0080] Figure 21 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0081] Figure 22 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application;

[0082] Figure 23 This is a partial structural diagram of a second support member in a support assembly provided in another embodiment of this application. Detailed Implementation

[0083] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0084] It should be understood that the terminology used herein to describe embodiments of the invention is not intended to limit and / or restrict the scope of the invention. For example, unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Unless the context clearly indicates otherwise, the singular forms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one.

[0085] like Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides a flexible display device, which includes:

[0086] Roller 1;

[0087] The flexible module 20 includes a sliding area and a planar area. The sliding area is configured to move around the roller shaft 1 to enable the flexible module 20 to unfold and retract.

[0088] The 'rolling zone' is the area where the flexible module passes through the rollers during its rolling and unfolding movements; it can also be called the rolled section. Conversely, the 'planar zone' is the area where the flexible module does not pass through the rollers during its rolling and unfolding movements; it can also be called the non-rolled section.

[0089] The flexible module 20 includes a flexible display screen 2 and a support assembly 3. The support assembly 3 is disposed on the surface of the flexible display screen 2 facing the roller 1, and includes a first support member 31 and a second support member 32. The first support member 31 is a bendable plate-like structure, and the second support member 32 is disposed on the side of the first support member 31 away from the flexible display screen 2, and includes multiple support bars 321. The multiple support bars 321 are arranged along the moving direction of the flexible module 20 (e.g., ...). Figure 1 The double arrows indicate the direction in which the flexible module 20 moves back and forth around the roller shaft 1. Each support bar 321 extends in the same direction as the roller shaft 1 and is fixed on the first support member 31.

[0090] The flexible display device provided in this application embodiment uses a support component 3 to support the flexible display screen 2. The support component 3 moves around the roller shaft 1, which can drive the flexible display screen 2 to unfold and retract. Furthermore, by applying a continuous tension to the support component 3 and supporting the support component 3 through the roller shaft 1, the support component 3 can be kept in a taut and flat state, thereby ensuring the reliability of the unfolding and retracting action of the flexible module 20.

[0091] Specifically, in the support component 3, the first support member 31 is a plate-like structure located near the back of the flexible display screen 2. Its main function is to fix the size and shape of the flexible display screen 2 and enhance the support and dynamic curling reliability of the flexible module 20. Optionally, the second support member 32 can be multiple independent support bars 321. The support bars 321 are not physically connected to each other. These support bars 321 are set close to the surface of the roller 1, parallel to each other and aligned with the extension direction of the roller 1. During the curling movement of the flexible module 20 around the roller 1, the independent support bar 321 design can minimize the stress impact on the flexible module 20, improve the curling reliability of the flexible module 20, and reduce the overall rebound force of the flexible module 20, thereby reducing the assembly difficulty of the flexible display device and the difficulty of achieving the curling action. In addition, while providing support performance, the support bars 321 can also strengthen the friction between the flexible module 20 and the roller 1, thereby improving the stability and reliability of the flexible module 20 when moving, winding, or unfolding around the roller 1.

[0092] In summary, the two-layer support structure of the first support member 31 and the second support member 32 can maintain the flatness of the flexible display screen 2, while enhancing the roll-up reliability of the flexible module 20 and improving the reliability of the flexible module 20 moving around the roller axis 1 to achieve unfolding and retraction actions, thereby improving the assembly yield and service life of the flexible display device.

[0093] In some embodiments, the flexible display screen 2 and the first support member 31 can be bonded together, and the first support member 31 and the second support member 32 can also be bonded together; or, the first support member 31 and the second support member 32 can be integrally formed.

[0094] For example, such as Figure 4 and Figure 5 As shown, the flexible display screen 2 may include a flexible display 21 and a cover plate 22. The cover plate 22 is located on the side of the flexible display screen 21 away from the support component 3, and can support and protect the display surface of the flexible display screen 21.

[0095] In some embodiments, the flexible display device provided in this application may further include a tension-applying component (such as...). Figures 1 to 3 (The traction unit 4, steering shaft assembly 5, and fixing unit 6 are included). (See reference.) Figures 1 to 3 As shown, the support component 3 includes a first end and a second end that are disposed opposite to each other; the support component 3 passes around the roller 1 in the direction from the first end to the second end, and the first end of the support component 3 is connected to the tensioning component.

[0096] Specifically, the first end of the support component 3 is connected to the tension application component. Through the tension applied by the tension application component and the support of the roller 1, the flexible module 20 can be fixed and rolled up.

[0097] For example, such as Figures 1 to 3 As shown, the tension-applying assembly includes a traction part 4, a steering shaft assembly 5, and a fixing part 6; wherein, the traction part 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 passes around the steering shaft assembly 5 and is connected to the fixing part 6; the roller 1 can move relative to the fixing part 6 to drive the flexible module 20 to move and unfold around the roller 1.

[0098] For example, the traction part 4 can be a flexible strip or a flexible rope.

[0099] For example, the steering shaft assembly 5 may include a moving shaft 52 and a fixed shaft 51; the traction part 4 passes around the fixed shaft 51 and the moving shaft 52 in sequence so that the extension direction of the traction part 4 is reversed twice; wherein, the axis of the fixed shaft 51 is fixed relative to the fixed part 6, for example, the fixed shaft 51 and the fixed part 6 may be connected to the same housing to fix their relative positions; the axis of the moving shaft 52 is fixed relative to the axis of the roller shaft 1, for example, the central axis of the moving shaft 52 and the central axis of the roller shaft 1 may be connected by a connecting rod to ensure that their relative positions remain unchanged, and the moving shaft 52 and the roller shaft 1 may move synchronously to drive the flexible module 20 to move and unfold around the roller shaft 1.

[0100] For example, the fixed shaft 51 can be either a rolling shaft or a non-rolling cylindrical pin; similarly, the moving shaft 52 can be either a rolling shaft or a non-rolling cylindrical pin. Optionally, the fixed shaft 51 can be a cylindrical pin, and the moving shaft 52 can be a rolling shaft.

[0101] For example, roller 1 is a rolling shaft, and the flexible module 20 and roller 1 are in damped contact. The two can drive each other. When the flexible module 20 moves around roller 1, roller 1 rolls synchronously.

[0102] Specifically, in the two reversals, the extension direction of the traction part 4 after each reversal is parallel to the extension direction before the reversal. This allows the traction part 4 to extend in one dimension, that is, between the roller 1 and the fixed part 6. This reduces the space occupied by the roller 1, traction part 4, steering shaft assembly 5 and fixed part 6, making it easier to store them in the module housing 7. On the other hand, the movement of the moving shaft 52 and the roller 1 in a direction away from the fixed part 6, as well as the rolling of the roller 1, can drive the flexible module 20 to move around the roller 1, which is beneficial for the flexible module 20 to unfold.

[0103] For example, the traction part 4 can maintain a certain tensile tension, which can pull the flexible module 20, the moving shaft 52 and the roller 1 toward the fixed part 6 so that the flexible module 20 can be folded up.

[0104] For example, such as Figure 1 As shown, the flexible display device also includes a housing 7, a roller 1 and a tensioning assembly, all located inside the housing 7; the first end of the support assembly 3 is located inside the housing 7 and connected to the tensioning assembly, and the second end of the support assembly 3 passes around the roller 1 and extends out of the housing 7, that is, one end of the flexible module 20 is located inside the housing 7, and the other end passes around the roller 1 and extends out of the housing 7.

[0105] For example, the housing 7 may include two parts that can move relative to each other. The first part is fixed in relative position with respect to the roller 1 and the moving shaft 52, and the second part is fixed in relative position with respect to the fixed part 6 and the fixed shaft 51. When the roller 1 and the moving shaft 52 move relative to the fixed part 6, the first part and the second part of the housing 7 can move relative to each other.

[0106] Specifically, for example, the fixing part 6 can be a connection point of the second part inside the housing 7; one end of the flexible module 20 is connected to the fixing part 6 via a tensioning assembly, and the other end extends out of the housing 7 around the roller 1. (See reference) Figure 1 and Figure 2 As shown, when the moving shaft 52 and the roller shaft 1 move away from the fixed part 6, the rolling of the roller shaft 1 can drive the flexible module 20 to extend and unfold out of the housing 7; Reference Figure 1 and Figure 3 As shown, the flexible module 20 can be moved toward the fixed part 6 under the pull of the traction part 4, so as to retract the flexible module 20 into the housing 7.

[0107] Of course, the rolling movement of the flexible display device provided in this application embodiment 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 roller 1 can be fixed, and the traction part 4 can be driven to move the flexible module 20 by the back-and-forth movement of the moving shaft 52 relative to the roller 1.

[0108] In some embodiments, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the flexible display device provided in this application embodiment may further include a first adhesive layer 81 located between the traction part 4 and the first support member 31, and the traction part 4 and the first support member 31 are bonded together by the first adhesive layer 81.

[0109] For example, the edge of the first support member 31 near the first end extends beyond the edge of the flexible display screen 2 near the first end, and the traction part 4 is connected to the portion of the first support member 31 that extends beyond 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 that extends beyond the flexible display screen 2 along its length is used to connect to the tension application component. The tension application component applies tension to the first support member 31 to keep the entire flexible module 20 flat and to achieve a curling action.

[0110] For example, such as Figure 4 As shown, the traction part 4 is bonded to the surface of the first support member 31 facing the flexible display screen 2. That is, the bonding part of the traction part 4 and the flexible display screen 2 are located on the same side of the first support member 31.

[0111] Or, such as Figure 5 As shown, the traction unit 4 includes a double-layer structure, which is bonded to both sides of the first support member 31. That is, the traction unit 4 is bonded to both sides of the first support member 31.

[0112] Of course, the edge of the first support member 31 near the first end can also be roughly aligned with the edge of the flexible display screen 2 near the first end; in this case, the traction part 4 is bonded to the surface of the first support member 31 facing away from the flexible display screen 2. Specifically, 'roughly aligned' means that the distance between the two edges is very small, within a set range, for example, the distance between the two edges is within ±1mm.

[0113] In some embodiments, such as Figure 6 , Figure 7 and Figure 8 As shown, along the thickness direction of the first support member 31, the first support member 31 is provided with a first opening, and the traction part 4 is provided with a second opening. The first support member 31 and the traction part 4 are connected by a connector 9 inserted into the first opening and the second opening. In this way, the bonding strength between the first support member 31 and the traction part 4 can be increased, thereby reducing the width of the bonding area.

[0114] Specifically, the connector can be a polymer material. For example, the connector can include polymer materials with a certain viscosity, such as resin, rubber, plastic, and coatings, which can be formed by coating, filling, and then curing. In this way, an open-pore dispensing process can be used to place the connector material into the first and second openings. After the connector material cures, it can tightly connect the first support and the traction part. Specifically, the connector material can be silicone rubber, epoxy resin, acrylic resin, polyethylene resin, etc.

[0115] For example, the first opening may be a semi-through hole that does not penetrate the first support member 31 or a through hole that penetrates the first support member 31; the second opening may be a through hole that penetrates the traction part 4.

[0116] In some embodiments, such as Figure 4 and Figure 5 As shown, the flexible module 20 also includes a second adhesive layer 82 located 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 together by the second adhesive layer 82.

[0117] For example, the second adhesive layer may include a substrate layer and adhesive layers located on both sides of the substrate layer, wherein the substrate layer is a polymer material. In other words, the second adhesive layer may employ a double-sided adhesive structure.

[0118] Of course, the second adhesive layer is not limited to double-sided tape; it can also be an adhesive material in the form of glue. In addition, the first adhesive layer can be made of the same material as the second adhesive layer to facilitate a uniform bonding process.

[0119] In some embodiments, the first support member has a perforated opening in the sliding area; such as Figure 9 and Figure 10 As shown, the first support member 31 may include a sliding part 311 located in the sliding area and a flat part 312 located in the flat area. The sliding part 311 is configured to move around the roller axis; and the sliding part 311 is provided with a hollow opening.

[0120] The 'rolling section' is the area where the first support member passes through the roller during the rolling and unfolding motion, and can also be called the rolling section; correspondingly, the 'flat section' is the area where the first support member does not pass through the roller during the rolling and unfolding motion, and can also be called the non-rolling section.

[0121] The first support member has a hollowed-out opening in its rolling section, which can improve the flexibility of this part and enhance the rolling reliability.

[0122] Alternatively, the first support member may have hollowed-out openings in both the sliding area and the flat area, so that the sliding part 311 and the flat part 312 of the first support member can be patterned.

[0123] For example, such as Figure 9 As shown, the hollow opening includes at least two rows of through holes 310, each row of through holes 310 is arranged along the extension direction of the roller shaft, and the through holes 310 in odd-numbered rows are at least partially staggered from those in even-numbered rows; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

[0124] In some embodiments, such as Figure 10 As shown, the second support member 32 is located in the rolling and sliding area, that is, the second support member 32 is disposed on the rolling and sliding part 311 of the first support member 31, or in other words, the second support member 32 is disposed on the part of the flexible module that rolls and moves around the roller shaft.

[0125] Specifically, the second support member 32 should include at least three support bars 321.

[0126] Specifically, since the second support member 32 is an independent strip arranged side by side, it can improve the support of the flexible display screen in the winding area 311 by contacting the roller shaft, and can also strengthen the friction between the flexible module and the roller shaft, thereby improving the stability and reliability of the flexible module moving and winding around the roller shaft.

[0127] In some embodiments, such as Figure 11 As shown, the support assembly may also include a reinforcing structure 33, which is disposed on the side of the first support member 31 away from the flexible display screen and located in the planar area, that is, on the planar portion 312 of the first support member 31.

[0128] For example, the reinforcing structure 33 is made of the same material as the first support 31 or the second support 32. For instance, the reinforcing structure 33 may be made of stainless steel sheet (SUS).

[0129] For example, the reinforcing structure 33 and the first support member 31 can be bonded and fixed together by a third adhesive layer 83, which can be made of the same material as the second adhesive layer 82.

[0130] In some embodiments, the thickness of the reinforcing structure 33 is approximately the same as the thickness of the second support 32 in the direction perpendicular to the first support 31, where approximately the same means that the two have the same thickness or the thickness difference is less than 10%.

[0131] In some embodiments, the first support member comprises a metal or alloy material, which may be a metal or alloy material with a relatively high Young's modulus, such as stainless steel, structural steel, titanium alloy, etc., or a metal with a relatively low Young's modulus, such as copper and copper alloys, aluminum alloys, magnesium alloys, etc.

[0132] For example, the thickness of the first support member is 0.02mm-0.5mm. Specifically, it can be 0.03mm, 0.08mm, 0.1mm, 0.15mm, 0.2mm, or 0.3mm.

[0133] Alternatively, the first support component can also be a polymer film or inorganic non-metallic layer that possesses a certain mechanical strength while meeting the requirements for flexibility and reliability. For example, it can be an organic polymer material such as polyimide film or polyurethane foam, or an inorganic non-metallic material such as glass or ceramics.

[0134] In some embodiments, the second support member comprises a metal, alloy, or metal oxide material, such as stainless steel, copper alloy, titanium alloy, or metal oxides such as ferrite or nickel oxide. For example, the width of each support strip in the second support member is 0.1mm-1mm, and the thickness of each support strip along the direction perpendicular to the first support member is 0.1mm-1mm.

[0135] Specifically, when the support bar includes structures such as a limiting part or a protrusion, the 'width of each support bar' refers to the width of the main body of the support bar (excluding the limiting part or protrusion).

[0136] In some embodiments, such as Figures 12 to 23 As shown, in the second support member, at least a portion of the multiple support bars 321 are provided with a limiting portion 320, and the relative position between the at least a portion of the support bar 321 and the adjacent support bar 321 is limited by the limiting portion 320.

[0137] For example, the limiting part 320 is part of the support strip 321 and can be integrally formed with the support strip body during the manufacturing process.

[0138] Specifically, the support bars 321 in this application are microstructures and are independently configured. Therefore, in actual installation, it is difficult to guarantee the position of each support bar 321 and the spacing between them. In this embodiment, by providing limiting portions 320 on the support bars 321, the relative positions of adjacent support bars 321 are limited. This facilitates determining the positions of adjacent support bars 321 and maintaining their spacing, reducing the difficulty of arranging and fixing the positions of the independent support bars 321 in the actual manufacturing process.

[0139] For example, the limiting portion 320 may include at least one of a protrusion structure and a groove structure;

[0140] For example, Figures 12 to 20 The limiting part 320 in the middle is a protruding structure. Figures 21 to 23 The limiting part 320 includes both a protruding structure and a groove structure.

[0141] For example, the protruding structure may include arc-shaped protrusions, square protrusions, trapezoidal protrusions, U-shaped protrusions, etc.; for example, Figure 12 , Figures 15 to 20 The limiting part 320 in the middle is an arc-shaped protrusion. Figure 13 The limiting part 320 is a rectangular protrusion. Figure 14 The limiting part 320 in the middle is a trapezoidal protrusion; Figure 22 The limiting part 320 in the middle includes a concave protrusion 3203; Figure 23 The limiting part 320 includes a concave protrusion 3206.

[0142] For example, the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove. Figure 21 The limiting part 320 in the middle includes an arc-shaped groove 3202.

[0143] In some implementations, such as Figures 12 to 14 As shown, the plurality of support bars 321 include a first support bar 3211 located at one end; among the plurality of support bars 321, except for the first support bar 3211, the other support bars 321 are provided with a limiting part 320 facing the first support bar 3211, and the limiting part 320 is a protruding structure.

[0144] Specifically, 'one end' refers to one end along the direction of the support bars. Therefore, the first support bar refers to an end support bar. In other words, in the embodiments of this application, except for the support bar at one end, all other support bars are provided with limiting parts facing the end. In this way, the relative position between each pair of adjacent support bars can be limited by the limiting parts.

[0145] In other implementations, such as Figure 15 and Figure 16 As shown, the plurality of support bars 321 include two end support bars 3212 located at both ends and an intermediate support bar 3213 located between the two end support bars 3212. Specifically, 'both ends' refers to the two ends along the direction of arrangement of the support bars, therefore, the two end support bars refer to the support bars located at both ends.

[0146] For example, each intermediate support bar 3213 is provided with a limiting part 320 on both sides of the two end support bars 3212, and each end support bar 3212 is provided with a limiting part 320 on one side of the intermediate support bar 3213. The limiting part 320 is a protruding structure.

[0147] The above configuration provides two limiting portions 320 between each pair of adjacent support bars. Specifically, these two limiting portions 320 not only limit the gap between the two adjacent support bars, but also, through the relative positional relationship of the two limiting portions 320 (e.g., the two limiting portions 320 are aligned or staggered along the direction perpendicular to the support bars), help to keep the two support bars aligned in the extension direction.

[0148] In some embodiments, each support bar has a first type of limiting part on its first side and a second type of limiting part on its second side, the first type of limiting part and the second type of limiting part having complementary shapes; the first type of limiting part and the second type of limiting part of two adjacent support bars complement each other.

[0149] Specifically, by complementing each other between the first and second limiting parts of two adjacent support bars, the two adjacent support bars can limit each other, thereby avoiding misalignment between adjacent support bars, which helps to reduce the difficulty of arranging support bars, and at the same time helps to maintain the relative positional relationship between support bars.

[0150] For example, Figure 21 In the middle, each support bar 321 is provided with a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are respectively an arc-shaped protrusion 3201 and an arc-shaped groove 3202. By using the two complementary limiting parts 320 with the arc-shaped protrusion 3201 and the arc-shaped groove 3202, the relative positional relationship between the support bars 321 can be maintained. Figure 22 In the middle, each support bar 321 is provided with a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are respectively an arc-shaped protrusion 3204 and a U-shaped protrusion 3203. The groove part of the U-shaped protrusion 3202 is an arc-shaped groove. By using the two complementary limiting parts 320 with the arc-shaped protrusion 3204 and the U-shaped protrusion 3203, the relative positional relationship between the support bars 321 can be maintained. Figure 23 In the middle, each support bar 321 has a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are a trapezoidal protrusion 3205 and a U-shaped protrusion 3206, respectively. The groove part of the U-shaped protrusion 3206 is a trapezoidal groove. By using the two complementary limiting parts 320 with the trapezoidal protrusion 3205 and the U-shaped protrusion 3206, the relative positional relationship between the support bars 321 can be maintained.

[0151] In some implementations, reference is made to Figures 17 to 19 As shown, the multiple support bars 321 are provided with at least two rows of limiting portions 320, which are arranged along the extending direction of the support bars 321, and each row of limiting portions 320 is aligned along the arrangement direction of the support bars 321. For example, Figure 17 The multiple support bars 321 are provided with two rows of limiting parts 320; Figure 18 The multiple support bars 321 are provided with three rows of limiting parts 320.

[0152] Specifically, the design of this embodiment, through multiple rows of limiting parts 320, can improve the stability and consistency of the spacing between the support bars 321 in the extension direction of the support bars 321.

[0153] In some embodiments, such as Figure 19 As shown, the limiting portions 320 in adjacent rows are alternately arranged. Alternatively, the limiting portions 320 of the support bar 321 can be staggered to form two or more rows of limiting portions 320.

[0154] In some embodiments, such as Figure 20 As shown, each support bar 321 may include two or more bar segments 3210. The bar segments 3210 of the multiple support bars 321 are arranged side by side, and each row of bar segments 3210 is provided with at least one row of limiting portions 320. Alternatively, a row of support bars 321 is divided into two or more rows of bar segments 3210, and each row of bar segments 3210 has a limiting portion 320 to maintain the gap and / or relative position between the bar segments 3210 in that row.

[0155] In this embodiment, the intermittent design of each support bar 321 avoids or eliminates the problem of breakage of the support bar 321 during bending or other flexible movements, thereby improving the reliability of the bending movement of the support assembly 3 itself. Furthermore, since each row of bars 3210 is provided with at least one row of limiting portions 320, the gap and / or relative position between each row of bars 3210 can be maintained.

[0156] Specifically, the flexible display devices provided in the above embodiments of this application can be applied to flexible display products such as flexible OLED, flexible mini-LED, flexible Micro-LED, or flexible QLED, and can be applied to products such as mobile phones, tablets, or laptops that can be rolled up for display.

[0157] On the other hand, reference Figure 9 As shown, this application embodiment also provides a support component 3, which is configured to be disposed on the non-display side of the flexible display screen. The support component 3 includes a first support member 31 and a second support member 32. The first support member 31 is a bendable plate-shaped structure, and the second support member 32 is disposed on the side of the first support member 31 away from the flexible display screen. It includes a plurality of support bars 321, which are arranged along a first direction. The extension direction of each support bar 321 is consistent and fixed on the first support member 31.

[0158] Specifically, in the support component 3 provided in this application, the first support member 31 is a plate-like structure located near the back of the flexible display screen. Its main function is to fix the size and shape of the flexible display screen and enhance the support and dynamic curling reliability of the flexible module. Optionally, the second support member 32 can be multiple independent support bars 321. There is no physical connection between the support bars 321 and these support bars 321 are parallel to each other and extend in the same direction. During the curling process of the flexible display screen, the independent support bar 321 design can minimize the stress impact on the flexible module, improve the flexibility reliability of the flexible module, and reduce the overall rebound force of the flexible module, thereby reducing the assembly difficulty of the entire curling display device and the difficulty of achieving flexible movement. In addition, while providing support performance, the support bar 321 can also strengthen the friction between the flexible display screen and other structures on the back side (such as the curling roller), thereby improving the reliability and dependability of the curling action of the flexible module.

[0159] In summary, the support component 3 provided in this application, through the two-layer support structure of the first support member 31 and the second support member 32, can maintain the flatness of the flexible display screen, while enhancing the flexibility and rollability of the flexible display screen, improving the reliability of the flexible roll-up action of the flexible display screen, and increasing the assembly yield and service life of the roll-up display device.

[0160] For example, in this embodiment of the application, the first direction may be consistent with the extension direction of one side edge of the flexible display screen; for example, the direction in which the plurality of support bars 321 are arranged is consistent with the extension direction of one side edge of the flexible display screen, and the extension direction of each support bar 321 is consistent with the extension direction of the other side edge of the flexible display screen; the flexible display screen may be rolled up or unfolded around the axis, and the extension direction of each support bar 321 is consistent with the extension direction of the axis.

[0161] In some embodiments, the first support member 31 is used to cover the entire back of the flexible display screen, that is, the shape and area of ​​the first support member 31 and the flexible display screen can be approximately the same; on the side of the first support member 31 away from the flexible display screen, the second support member 32 can be evenly distributed on the entire first support member 31, or it can be located only on a part of the first support member 31, depending on the actual product requirements.

[0162] For example, the support component provided in this application embodiment is configured to move together with the flexible display screen around a roller axis to realize the unfolding and retraction of the flexible display screen; such as Figure 9 and Figure 10 As shown, in the support assembly provided in this application embodiment, the first support member 31 may include a sliding part 311 and a flat part 312. The sliding part 311 is configured to move around the roller axis; and the sliding part 311 is provided with a hollow opening.

[0163] The 'rolling section' is the area that the first support member passes through the roller when it rolls and unfolds together with the flexible display screen; it can also be called the rolling section. In contrast, the 'flat section' is the area that the first support member does not pass through the roller when it rolls and unfolds; it can also be called the non-rolling section.

[0164] The roll section 311 has a hollowed-out opening, which can improve the flexibility of this part and enhance the roll reliability.

[0165] Alternatively, both the sliding part 311 and the flat part 312 are provided with hollow openings, that is, the entire surface of the first support member 21 can be patterned.

[0166] For example, such as Figure 9 As shown, the hollow opening includes at least two rows of through holes 310, each row of through holes 310 is arranged along the extension direction of the roller shaft, and the through holes 310 in odd-numbered rows are at least partially staggered from those in even-numbered rows; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

[0167] For example, such as Figure 10 and Figure 11 As shown, the second support member 32 is disposed on the rolling and sliding portion 311 of the first support member 31, that is, the second support member 32 is disposed on the part of the flexible module that rolls and moves around the roller axis.

[0168] Specifically, the second support member 32 should include at least three support bars 321.

[0169] Specifically, since the second support member 32 is an independent strip arranged side by side, it can improve the support of the flexible display screen in the winding area 311 by contacting the roller shaft, and can also strengthen the friction between the flexible module and the roller shaft, thereby improving the stability and reliability of the flexible module moving and winding around the roller shaft.

[0170] In some embodiments, the flexible display screen and the first support member 31 can be bonded together, and the first support member 31 and the second support member 32 can also be bonded together.

[0171] In some embodiments, such as Figure 11 As shown, the support assembly may also include a reinforcing structure 33, which is disposed on the side of the first support member 31 away from the flexible display screen and located on the planar portion 312 of the first support member 31.

[0172] For example, the reinforcing structure 33 is made of the same material as the first support 31 or the second support 32. For instance, the reinforcing structure 33 may be made of stainless steel sheet (SUS).

[0173] For example, the first support member 31 and the second support member 32 are bonded and fixed together by the second adhesive layer 82, and the reinforcing structure 33 is bonded and fixed together with the first support member 31 by the third adhesive layer 83. The third adhesive layer 83 may be made of the same material as the second adhesive layer 82.

[0174] In some embodiments, the thickness of the reinforcing structure 33 is approximately the same as the thickness of the second support 32 in the direction perpendicular to the first support 31, where approximately the same means that the two have the same thickness or the thickness difference is less than 10%.

[0175] In some embodiments, the first support member comprises a metal or alloy material, which may be a metal or alloy material with a relatively high Young's modulus, such as stainless steel, structural steel, titanium alloy, etc., or a metal with a relatively low Young's modulus, such as copper and copper alloys, aluminum alloys, magnesium alloys, etc.

[0176] For example, the thickness of the first support member is 0.02mm-0.5mm. Specifically, it can be 0.03mm, 0.08mm, 0.1mm, 0.15mm, 0.2mm, or 0.3mm.

[0177] Alternatively, the first support component can also be a polymer film or inorganic non-metallic layer that possesses a certain mechanical strength while meeting the requirements for flexibility and reliability. For example, it can be an organic polymer material such as polyimide film or polyurethane foam, or an inorganic non-metallic material such as glass or ceramics.

[0178] In some embodiments, the second support member includes a metal, alloy, or metal oxide material, such as stainless steel, copper alloy, titanium alloy, or metal oxides such as ferrite or nickel oxide.

[0179] For example, the width of each support bar in the second support member is 0.1mm-1mm, and the thickness of each support bar along the direction perpendicular to the first support member is 0.1mm-1mm.

[0180] Specifically, when the support bar includes structures such as a limiting part or a protrusion, the 'width of each support bar' refers to the width of the main body of the support bar (excluding the limiting part or protrusion).

[0181] In some embodiments, such as Figures 12 to 23 As shown, in the second support member, at least a portion of the multiple support bars 321 are provided with a limiting portion 320, and the relative position between the at least a portion of the support bar 321 and the adjacent support bar 321 is limited by the limiting portion 320.

[0182] For example, the limiting part 320 is part of the support strip 321 and can be integrally formed with the support strip body during the manufacturing process.

[0183] Specifically, the support bars 321 in this application are microstructures and are independently configured. Therefore, in actual installation, it is difficult to guarantee the position of each support bar 321 and the spacing between them. In this embodiment, by providing limiting portions 320 on the support bars 321, the relative positions of adjacent support bars 321 are limited. This facilitates determining the positions of adjacent support bars 321 and maintaining their spacing, reducing the difficulty of arranging and fixing the positions of the independent support bars 321 in the actual manufacturing process.

[0184] For example, the limiting portion 320 may include at least one of a protrusion structure and a groove structure;

[0185] For example, Figures 12 to 20 The limiting part 320 in the middle is a protruding structure. Figures 21 to 23 The limiting part 320 includes both a protruding structure and a groove structure.

[0186] For example, the protruding structure may include arc-shaped protrusions, square protrusions, trapezoidal protrusions, U-shaped protrusions, etc.; for example, Figure 12 , Figures 15 to 20 The limiting part 320 in the middle is an arc-shaped protrusion. Figure 13 The limiting part 320 is a rectangular protrusion. Figure 14 The limiting part 320 in the middle is a trapezoidal protrusion; Figure 22 The limiting part 320 in the middle includes a concave protrusion 3203; Figure 23 The limiting part 320 includes a concave protrusion 3206.

[0187] For example, the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove. Figure 21 The limiting part 320 in the middle includes an arc-shaped groove 3202.

[0188] In some implementations, such as Figures 12 to 14 As shown, the plurality of support bars 321 include a first support bar 3211 located at one end; among the plurality of support bars 321, except for the first support bar 3211, the other support bars 321 are provided with a limiting part 320 facing the first support bar 3211, and the limiting part 320 is a protruding structure.

[0189] Specifically, 'one end' refers to one end along the direction of the support bars. Therefore, the first support bar refers to an end support bar. In other words, in the embodiments of this application, except for the support bar at one end, all other support bars are provided with limiting parts facing the end. In this way, the relative position between each pair of adjacent support bars can be limited by the limiting parts.

[0190] In other implementations, such as Figure 15 and Figure 16 As shown, the plurality of support bars 321 include two end support bars 3212 located at both ends and an intermediate support bar 3213 located between the two end support bars 3212; each intermediate support bar 3213 is provided with a limiting part 320 on both sides facing the two end support bars 3212, and each end support bar 3212 is provided with a limiting part 320 on one side facing the intermediate support bar 3213, and the limiting part 320 is a protruding structure.

[0191] Specifically, 'both ends' refers to the two ends along the direction of the support bars. Therefore, the two end support bars refer to the support bars located at both ends.

[0192] The above configuration provides two limiting portions 320 between each pair of adjacent support bars. Specifically, these two limiting portions 320 not only limit the gap between the two adjacent support bars, but also, through the relative positional relationship of the two limiting portions 320 (e.g., the two limiting portions 320 are aligned or staggered along the direction perpendicular to the support bars), help to keep the two support bars aligned in the extension direction.

[0193] In some embodiments, each support bar has a first type of limiting part on its first side and a second type of limiting part on its second side, the first type of limiting part and the second type of limiting part having complementary shapes; the first type of limiting part and the second type of limiting part of two adjacent support bars complement each other.

[0194] Specifically, by complementing each other between the first and second limiting parts of two adjacent support bars, the two adjacent support bars can limit each other, thereby avoiding misalignment between adjacent support bars, which helps to reduce the difficulty of arranging support bars, and at the same time helps to maintain the relative positional relationship between support bars.

[0195] For example, Figure 21 In the middle, each support bar 321 is provided with a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are respectively an arc-shaped protrusion 3201 and an arc-shaped groove 3202. By using the two complementary limiting parts 320 with the arc-shaped protrusion 3201 and the arc-shaped groove 3202, the relative positional relationship between the support bars 321 can be maintained. Figure 22 In the middle, each support bar 321 is provided with a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are respectively an arc-shaped protrusion 3204 and a U-shaped protrusion 3203. The groove part of the U-shaped protrusion 3202 is an arc-shaped groove. By using the two complementary limiting parts 320 with the arc-shaped protrusion 3204 and the U-shaped protrusion 3203, the relative positional relationship between the support bars 321 can be maintained. Figure 23In the middle, each support bar 321 has a first type of limiting part and a second type of limiting part on both sides. The first type of limiting part and the second type of limiting part are a trapezoidal protrusion 3205 and a U-shaped protrusion 3206, respectively. The groove part of the U-shaped protrusion 3206 is a trapezoidal groove. By using the two complementary limiting parts 320 with the trapezoidal protrusion 3205 and the U-shaped protrusion 3206, the relative positional relationship between the support bars 321 can be maintained.

[0196] In some implementations, reference is made to Figures 17 to 19 As shown, the multiple support bars 321 are provided with at least two rows of limiting portions 320, which are arranged along the extending direction of the support bars 321, and each row of limiting portions 320 is aligned along the arrangement direction of the support bars 321. For example, Figure 17 The multiple support bars 321 are provided with two rows of limiting parts 320; Figure 18 The multiple support bars 321 are provided with three rows of limiting parts 320.

[0197] Specifically, the design of this embodiment, through multiple rows of limiting parts 320, can improve the stability and consistency of the spacing between the support bars 321 in the extension direction of the support bars 321.

[0198] In some embodiments, such as Figure 19 As shown, the limiting portions 320 in adjacent rows are alternately arranged. Alternatively, the limiting portions 320 of the support bar 321 can be staggered to form two or more rows of limiting portions 320.

[0199] In some embodiments, such as Figure 20 As shown, each support bar 321 may include two or more bar segments 3210. The bar segments 3210 of the multiple support bars 321 are arranged side by side, and each row of bar segments 3210 is provided with at least one row of limiting portions 320. Alternatively, a row of support bars 321 is divided into two or more rows of bar segments 3210, and each row of bar segments 3210 has a limiting portion 320 to maintain the gap and / or relative position between the bar segments 3210 in that row.

[0200] In this embodiment, the intermittent design of each support bar 321 avoids or eliminates the problem of breakage of the support bar 321 during bending or other flexible movements, thereby improving the reliability of the bending movement of the support assembly 3 itself. Furthermore, since each row of bars 3210 is provided with at least one row of limiting portions 320, the gap and / or relative position between each row of bars 3210 can be maintained.

[0201] Specifically, the support components provided in this application embodiment can be applied to flexible displays, such as flexible OLED, flexible mini-LED, flexible Micro-LED, or flexible QLED. For example, they can be applied to products that can be rolled up for display, such as mobile phones, tablets, or laptops.

[0202] It should be noted that in some embodiments of this disclosure, the flexible display device may also include other structures, which can be determined according to actual needs, and the embodiments of this disclosure do not limit this. Furthermore, the embodiments of this disclosure are merely examples of specific implementation schemes, and the inventive solution of this application is not limited to the above embodiments. For example, the embodiments can be split or combined to form new embodiments, all of which fall within the scope of protection of the technical solution of this application. Moreover, the accompanying drawings provided in the embodiments of this application are only schematic diagrams, and the actual dimensions and proportions of each structure are not limited to the measured dimensions in the drawings.

[0203] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. If these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A flexible display device, wherein, include: Roller shaft; A flexible module includes a sliding area and a planar area. The sliding area is configured to move around a roller shaft to achieve the unfolding and retraction of the flexible module. The flexible module includes a flexible display screen and a support assembly. The support assembly is disposed on the surface of the flexible display screen facing the roller shaft and 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 disposed on the side of the first support member away from the flexible display screen and includes multiple support bars. The multiple support bars are arranged along the moving direction of the flexible module, and each support bar is aligned with the extending direction of the roller shaft and fixed to the first support member. Of the plurality of support bars, at least some of the support bars are provided with limiting portions, and the relative position between the at least some support bars and their adjacent support bars is defined by the limiting portions; the relative position includes the distance between the main body portions of two adjacent support bars; The limiting part includes at least one of a protrusion structure and a groove structure; the protrusion structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a U-shaped protrusion; the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove. The plurality of support bars include two end support bars located at both ends and an intermediate support bar located between the two end support bars. Each intermediate support bar is provided with a limiting part on both sides facing the two end support bars, and each end support bar is provided with a limiting part on one side facing the intermediate support bar. The limiting part is a protruding structure. The flexible display device further includes a tension application assembly, which includes a traction part, a steering shaft assembly, and a fixing part; it also includes a first adhesive layer located between the traction part and the first support member, wherein the traction part and the first support member are bonded together by the first adhesive layer; Wherein, along the thickness direction of the first support member, the first support member is provided with a first opening, the traction part is provided with a second opening, and the first support member and the traction part are connected by a connector inserted into the first opening and the second opening; the connector is made of polymer material.

2. The flexible display device of claim 1, wherein the support assembly includes a first end and a second end disposed opposite to each other; the support assembly passes around the roller shaft in a direction from the first end to the second end, and the first end is connected to the tension application assembly.

3. The flexible display device as described in claim 2, The traction unit includes a third end and a fourth end. The third end is connected to the first support member, and the fourth end bypasses the steering shaft assembly and is connected to the fixing part. The roller can move relative to the fixed part to drive the flexible module to move and unfold around the roller.

4. The flexible display device as described in claim 3, wherein, The steering shaft assembly includes a movable shaft and a fixed shaft; the traction unit bypasses the fixed shaft and the movable shaft so that the extension direction is reversed twice; The relative position of the axis of the fixed shaft and the fixed part is fixed, and the relative position of the axis of the movable shaft and the axis of the roller shaft is fixed.

5. The flexible display device as described in claim 2, wherein, The edge of the first support member near the first end extends beyond the edge of the flexible display screen near the first end, and the traction part is connected to the portion of the first support member that extends beyond the flexible display screen.

6. The flexible display device as claimed in claim 5, wherein, The traction part is bonded to the side surface of the first support member facing the flexible display screen.

7. The flexible display device as claimed in claim 5, wherein, The traction part includes a double-layer structure, which is bonded to the two side surfaces of the first support member respectively.

8. The flexible display device as claimed in claim 2, wherein, The edge of the first support member near the first end is aligned with the edge of the flexible display screen near the first end; the traction part is bonded to the surface of the first support member opposite to the flexible display screen.

9. The flexible display device as claimed in claim 1, wherein, The first opening is either a semi-through hole that does not penetrate the first support member or a through hole that penetrates the first support member; the second opening is a through hole that penetrates the traction part.

10. The flexible display device as claimed in claim 2, wherein, It also includes a housing, within which the roller and the tension application assembly are located; The first end of the support assembly is located inside the housing, and the second end of the support assembly passes around the roller and extends out of the housing.

11. The flexible display device as claimed in claim 1, wherein, The first support member has a hollowed-out opening in the rolling area.

12. The flexible display device as claimed in claim 1, wherein, The first support member has hollow openings in both the rolling area and the planar area.

13. The flexible display device as claimed in claim 11 or 12, wherein, The hollow opening includes at least two rows of through holes, each row of through holes is arranged along the extension direction of the roller shaft, and the through holes in the odd-numbered rows are at least partially staggered from the through holes in the even-numbered rows; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

14. The flexible display device according to any one of claims 1-12, wherein, The second support member is located in the sliding area.

15. The flexible display device as claimed in claim 14, wherein, The support component further includes a reinforcing structure, which is disposed on the side of the first support member away from the flexible display screen and located in the planar area.

16. The flexible display device as claimed in claim 15, wherein, The reinforcing structure is made of the same material as the first support or the second support.

17. The flexible display device as claimed in claim 15, wherein, Along the direction perpendicular to the first support member, the thickness of the reinforcing structure is the same as the thickness of the second support member.

18. The flexible display device according to any one of claims 1-12, wherein, It also includes a second adhesive layer located between the second support member and the first support member, wherein the second support member and the first support member are bonded together by the second adhesive layer; The second adhesive layer includes a substrate layer and adhesive layers located on both sides of the substrate layer, wherein the substrate layer is a polymer material.

19. The flexible display device according to any one of claims 1-12, wherein, The first support member is made of metal or alloy material, and the thickness of the first support member is 0.02mm-0.5mm.

20. The flexible display device according to any one of claims 1-12, wherein, The second support member comprises a metal, alloy, or metal oxide material. The width of each support bar in the second support member is 0.1mm-1mm, and the thickness of each support bar along the direction perpendicular to the first support member is 0.1mm-1mm.

21. The flexible display device as claimed in claim 1, wherein, The limiting parts of adjacent rows are alternately set.

22. The flexible display device as claimed in claim 1, wherein, Each support bar includes two or more bar segments, with each bar segment arranged side by side, and each row of bar segments having at least one row of limiting parts.

23. A support component, wherein, The support assembly is configured to be disposed on the non-display side of the flexible display screen, and 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 disposed on the side of the first support member away from the flexible display screen, and includes multiple support strips arranged along a first direction, with each support strip extending in the same direction and fixed to the first support member; Among the plurality of support bars, at least some support bars are provided with limiting portions, and the relative position between the support bar and its adjacent support bars is defined by the limiting portions; the relative position includes the distance between the main body portions of two adjacent support bars; The limiting part includes at least one of a protrusion structure and a groove structure; the protrusion structure includes an arc-shaped protrusion, a square protrusion, a trapezoidal protrusion, and a U-shaped protrusion; the groove structure includes an arc-shaped groove, a square groove, and a trapezoidal groove. The plurality of support bars include two end support bars located at both ends and an intermediate support bar located between the two end support bars. Each intermediate support bar is provided with a limiting part on both sides facing the two end support bars, and each end support bar is provided with a limiting part on one side facing the intermediate support bar. The limiting part is a protruding structure. The support assembly further includes a tension application assembly, which includes a traction part, a steering shaft assembly, and a fixing part; it also includes a first adhesive layer located between the traction part and the first support member, wherein the traction part and the first support member are bonded together by the first adhesive layer; Wherein, along the thickness direction of the first support member, the first support member is provided with a first opening, the traction part is provided with a second opening, and the first support member and the traction part are connected by a connector inserted into the first opening and the second opening; the connector is made of polymer material.

24. The support component as claimed in claim 23, wherein, The support assembly is configured to move around the roller axis together with the flexible display screen to realize the unfolding and retraction of the flexible display screen; the first support member includes a sliding part and a flat part, the sliding part being configured to move around the roller axis; The sliding part is provided with a hollow opening; or, both the sliding part and the flat part are provided with hollow openings.

25. The support component as claimed in claim 24, wherein, The hollow opening includes at least two rows of through holes, each row of through holes is arranged along the extension direction of the roller shaft, and the through holes in the odd-numbered rows are at least partially staggered from the through holes in the even-numbered rows; the through holes are strip-shaped holes extending along the extension direction of the roller shaft.

26. The support component as claimed in claim 24, wherein, The second support member is located in the sliding section.

27. The support component as claimed in claim 26, wherein, It also includes a reinforcing structure, which is disposed on the side of the first support member away from the flexible display screen and located in the planar portion.

28. The support component as claimed in claim 27, wherein, The reinforcing structure is made of the same material as the first support or the second support.

29. The support component as claimed in claim 27, wherein, Along the direction perpendicular to the first support member, the thickness of the reinforcing structure is the same as the thickness of the second support member.

30. The support component as claimed in claim 23, wherein, The first support member is made of metal or alloy material, and the thickness of the first support member is 0.02mm-0.5mm.

31. The support component as claimed in claim 23, wherein, The second support member comprises a metal, alloy, or metal oxide material. The width of each support bar in the second support member is 0.1mm-1mm, and the thickness of each support bar along the direction perpendicular to the first support member is 0.1mm-1mm.

32. The support component as claimed in claim 23, wherein, The limiting parts of adjacent rows are alternately set.

33. The support component as claimed in claim 23, wherein, Each support bar includes two or more bar segments, with each bar segment arranged side by side, and each row of bar segments having at least one row of limiting parts.

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