Flexible Display Device

Abstract

The flexible display device includes a fixed base (2), a rotation shaft (21), a first screen edge fixing member (3), a second screen edge fixing member (4), a flexible screen (1), a first elastic member (22), and a second elastic member (23). The rotation shaft (21) is mounted on the fixed base (2), the first screen edge fixing member (3) is slidably attached to the fixed base (2) with a sliding direction perpendicular to the axial direction of the rotation shaft (21), and the second screen edge fixing member (4) is slidably attached to the fixed base (2) with a sliding direction perpendicular to the axial direction of the rotation shaft (21). The flexible screen (1) bypasses the rotation shaft (21), and one end of the flexible screen (1) is fixed to the first screen edge fixing member (3) and the other end is fixed to the second screen edge fixing member (4). The first elastic member (22) is mounted between the fixed base (2) and the first screen edge fixing member (3) and provides a first elastic force (F1) to the first screen edge fixing member (3), and the second elastic member (23) is mounted between the fixed base (2) and the second screen edge fixing member (4) and provides a second elastic force (F2) to the second screen edge fixing member (4). The first elastic force (F1) can at least partially balance the second elastic force (F2).

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202211052319.X, entitled "Flexible Display Device," filed on August 31, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of display technology, and in particular to flexible display devices. [Background technology]

[0003] With the development of display technology, display devices have been developed into various usage forms, among which new display products, such as roll-up flexible display devices and sliding and pulling flexible display devices, are also tending to be developed in the future. Roll-up flexible display devices have high requirements for flexible screens and terminal structures, and currently have some difficulties in realizing mass production, while sliding and pulling flexible display devices can meet the development needs of current mobile terminals and can realize screen unfolding and contraction. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a flexible display device that can reduce the risk of display abnormalities. [Means for solving the problem]

[0005] An embodiment of the present application is a flexible display device including a fixed base, a rotation shaft, a first screen edge fixing member, a second screen edge fixing member, a flexible screen, a first elastic member, and a second elastic member, The rotation shaft is mounted on a fixed base, the first screen end fixing member is slidably mounted on the fixed base with the sliding direction perpendicular to the axial direction of the rotation shaft, and the second screen end fixing member is slidably mounted on the fixed base with the sliding direction perpendicular to the axial direction of the rotation shaft. The flexible screen bypasses the rotation shaft, and one end of the flexible screen is fixed to the first screen end fixing member and the other end is fixed to the second screen end fixing member. the first elastic member is mounted between the fixed base and the first screen end fixing member and provides a first elastic force to the first screen end fixing member; the second elastic member is mounted between the fixed base and the second screen end fixing member and provides a second elastic force to the second screen end fixing member; Here, a flexible display device is provided, wherein a first elastic force can at least partially balance a second elastic force.

[0006] An embodiment of the present application provides a flexible display device, in which a first elastic force and a second elastic force respectively apply tensile forces to both ends of a flexible screen. The first elastic force can balance the friction generated between the side of the fixing base facing the first screen end fixing member and the flexible screen. The second elastic force can balance the friction generated between the side of the fixing base facing the second screen end fixing member and the flexible screen. The presence of the first elastic force and the second elastic force can reduce the effect of friction on the flexible screen from both sides of the fixing base, thereby reducing the risk of excessively large force differences between the two ends of the flexible screen due to frictional forces and improving the reliability of the flexible display device. [Brief explanation of the drawings]

[0007] In order to more clearly explain the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on the drawings without any creative efforts. [Figure 1]1 is a structural schematic diagram of a flexible display device according to an embodiment of the present application in a contracted state; [Figure 2] 1 is a structural schematic diagram of a flexible display device according to an embodiment of the present application in an unfolded state; [Figure 3] 1 is an exploded structural schematic diagram of a flexible display device according to an embodiment of the present application; [Figure 4] 1 is an exploded structural schematic diagram of an expandable structural member in a flexible display device according to an embodiment of the present application. [Figure 5] 1 is a structural schematic diagram of an elastic structural member in a contracted state of a flexible display device according to an embodiment of the present application; [Figure 6] 1 is a structural schematic diagram of an expandable structural member in an unfolded state of a flexible display device according to an embodiment of the present application; [Figure 7] 1 is a structural schematic diagram of a fixing base in a flexible display device according to an embodiment of the present application; [Figure 8] 3 is a structural schematic diagram of a first sliding guide mechanism in the flexible display device according to the embodiment of the present application. FIG. [Figure 9] 4 is a structural schematic diagram of a second screen edge fixing member in the flexible display device according to the embodiment of the present application. FIG. [Figure 10] 1 is a structural schematic diagram of a flexible display device according to an embodiment of the present application in a contracted state of an expandable structural member. [Figure 11] 1 is a structural schematic diagram of an expandable structural member in an unfolded state in a flexible display device according to an embodiment of the present application. [Figure 12] 3A and 3B are schematic diagrams illustrating a fitting structure between a first elastic member and a first screen end fixing member in a flexible display device according to an embodiment of the present application. [Figure 13] 1A and 1B are structural schematic diagrams of curved support members in a flexible display device according to an embodiment of the present application; [Figure 14] 3 is a structural schematic diagram of a first screen edge fixing member in the flexible display device according to the embodiment of the present application; FIG. [Figure 15] 10 is an exploded structural schematic diagram of an expansion and contraction structure member in another flexible display device according to an embodiment of the present application. FIG. [Figure 16] 1 is a structural schematic diagram of a power supply structure in a flexible display device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, the embodiments of the present application will be described in more detail with reference to the drawings and examples. The detailed description of the following examples and the drawings are intended to exemplify the principles of the present application and are not intended to limit the scope of the present application, i.e., the present application is not limited to the described examples.

[0009] The applicant has found through research that in a flexible display device that achieves sliding tension, the flexible screen needs to expand and contract synchronously with the sliding end during the sliding process, and at the same time, the flexible screen needs to move relative to the rotating shaft. During this process, one end of the flexible screen hidden inside the flexible display device continues to receive a tensile force. However, due to factors such as the influence of friction between the flexible screen and the rotating shaft, some of the tensile force is balanced at the intermediate position of the flexible screen, so that the force received by the one end located at the light-emitting surface of the flexible screen is smaller than that received by the other end. In this case, a large tensile force needs to be provided to ensure that the one end located at the light-emitting surface of the flexible screen receives a sufficient external force to unfold the flexible display device, and the tensile force increases with the increase in sliding distance, which is likely to cause display abnormalities.

[0010] To solve the above problems, referring to Figures 1 to 6, an embodiment of the present application provides a flexible display device including a fixed base 2, a rotating shaft 21, a first screen edge fixing member 3, a second screen edge fixing member 4, a flexible screen 1, at least one first elastic member 22, and at least one second elastic member 23.

[0011] The rotation shaft 21 is installed on the fixed base 2, the first screen end fixing member 3 is slidably mounted on the fixed base 2 with the sliding direction perpendicular to the axial direction of the rotation shaft 21, and the second screen end fixing member 4 is slidably mounted on the fixed base 2 with the sliding direction perpendicular to the axial direction of the rotation shaft 21. The flexible screen 1 bypasses the rotation shaft 21, and one end of the flexible screen 1 is fixed to the first screen end fixing member 3 and the other end is fixed to the second screen end fixing member 4.

[0012] The first elastic member 22 is mounted between the fixed base 2 and the first screen edge fixing member 3 and provides a first elastic force F1 to the first screen edge fixing member 3, and the second elastic member 23 is mounted between the fixed base 2 and the second screen edge fixing member 4 and provides a second elastic force F2 to the second screen edge fixing member 4. Here, the first elastic force F1 can at least partially balance the second elastic force F2.

[0013] The flexible display device according to the embodiment of the present application includes at least two states: a contracted state and an unfolded state, and the displayable screen size of the flexible display device in the unfolded state is larger than that in the contracted state, thereby improving the user experience.

[0014] The flexible screen 1 is a main component for realizing the display function of the flexible display device. When the flexible display device is used, corresponding image information is transmitted to the flexible screen 1 and displayed by the flexible screen 1.

[0015] The flexible display device includes an elastic structural member S. The fixed base 2, the rotating shaft 21, the first screen edge fixing member 3, the second screen edge fixing member 4, the first elastic member 22, and the second elastic member 23 are all contained within the elastic structural member S, and the elastic structural member S itself is deformable, and the elastic structural member S is the main assembly for realizing the elastic effect in the flexible display device.

[0016] The fixed base 2 is for mounting a rotation shaft 21. The rotation shaft 21 is rotatably connected to the fixed base 2. In the contracted state, some structures of the flexible screen 1 are curved around the rotation shaft 21 so that at least a part of the flexible screen 1 is hidden inside the flexible display device. In the process of the flexible display device transitioning from the contracted state to the unfolded state, the flexible screen 1 moves relative to the rotation shaft 21 and the rotation shaft 21 rotates with respect to the fixed base 2, so that some structures of the flexible screen 1 are exposed from inside the flexible display device, thereby increasing the displayable screen size of the flexible display device.

[0017] The flexible screen 1 has opposite ends in its extension direction, one end fixed to a first screen edge fixing member 3 and the other end fixed to a second screen edge fixing member 4. Since the flexible screen 1 needs to be installed around a rotation axis 21, both ends of the flexible screen 1 are located on either side of the fixing base 2 in the thickness direction Z of the flexible display device. Furthermore, it can be seen that the first screen edge fixing member 3 and the second screen edge fixing member 4 are located on either side of the fixing base 2 in the thickness direction Z.

[0018] It should be noted that one of the first screen edge fixing member 3 and the second screen edge fixing member 4 is located on the side of the fixing base 2 closer to the light output surface of the flexible display device, and the other is located on the side of the fixing base 2 closer to the backlight surface of the flexible display device, but the embodiments of the present application are not limited to these. To more clearly explain the technical solution of the present application, the following description takes as an example a case where the first screen edge fixing member 3 is located on the side of the fixing base 2 closer to the light output surface of the flexible display device, and the second screen edge fixing member 4 is located on the side of the fixing base 2 closer to the backlight surface of the flexible display device.

[0019] The first screen edge fixing member 3 and the second screen edge fixing member 4 are both slidably connected to the fixing base 2; that is, the first screen edge fixing member 3, the second screen edge fixing member 4, and the fixing base 2 can all slide relative to one another. When the flexible display device transitions between the contracted state and the unfolded state, the first screen edge fixing member 3 and the second screen edge fixing member 4 usually move in opposite directions. Specifically, when transitioning from the contracted state to the unfolded state, the first screen edge fixing member 3 moves away from the rotation axis 21, and the second screen edge fixing member 4 moves toward the rotation axis 21. The transition of the flexible display device from the unfolded state to the contracted state is the opposite process, and a description thereof will be omitted in this embodiment.

[0020] The first elastic member 22 is mounted between the fixed base 2 and the first screen edge fixing member 3 and provides a first elastic force F1 to the first screen edge fixing member 3, and since one end of the flexible screen 1 is fixed to the first screen edge fixing member 3, the first elastic force F1 applied by the first elastic member 22 can be transmitted to the flexible screen 1. The second elastic member 23 is mounted between the fixed base 2 and the second screen edge fixing member 4 and provides a second elastic force F2 to the second screen edge fixing member 4. Since the other end of the flexible screen 1 is fixed to the second screen edge fixing member 4, the second elastic force F2 applied by the second elastic member 23 can be transmitted to the flexible screen 1 in the same manner.

[0021] The embodiments of the present application do not limit the structural sizes of the first elastic member 22 and the second elastic member 23, the connection form of the first elastic member 22 to the fixed base 2 and the first screen end fixing member 3, or the connection form of the second elastic member 23 to the fixed base 2 and the second screen end fixing member 4. Illustratively, the first elastic member 22 and the second elastic member 23 both have a spring structure.

[0022] The first elastic force F1 can at least partially balance the second elastic force F2, i.e., the included angle between the first elastic force F1 and the second elastic force F2 is less than 90°. Next, in the embodiment of the present application, a specific example will be described in which the included angle between the first elastic force F1 and the second elastic force F2 is 0, i.e., the direction of the first elastic force F1 is the same as the direction of the second elastic force F2.

[0023] The direction of the first elastic force F1 is the same as the direction of the second elastic force F2, i.e., the first screen edge fixing member 3 and the second screen edge fixing member 4 receive forces in the same direction, and furthermore, the opposing ends of the flexible screen 1 receive forces in the same direction. Because both ends of the flexible screen 1 are located on either side of the fixing base 2 in the thickness direction Z, the presence of the first elastic force F1 and the second elastic force F2 causes both ends of the flexible screen 1 to tend to move away from the rotation axis 21, i.e., the flexible screen 1 tends to stretch, thereby keeping the exposed display surface flat.

[0024] As a result, the first elastic force F1 and the second elastic force F2 apply tensile forces to both ends of the flexible screen 1, and the first elastic force F1 can balance the friction generated between the side of the fixing base 2 facing the first screen end fixing member 3 and the flexible screen 1. The second elastic force F2 can balance the friction generated between the side of the fixing base 2 facing the second screen end fixing member 4 and the flexible screen 1. The presence of the first elastic force F1 and the second elastic force F2 can reduce the effect of friction on the flexible screen 1 from both sides of the fixing base 2, thereby reducing the risk of excessively large difference in force between both ends of the flexible screen 1 due to friction compared to installing an elastic member only on one end, and improving the reliability of use of the flexible display device.

[0025] In addition, during the process of the flexible display device transitioning between the contracted state and the unfolded state, the first elastic member 22 and the second elastic member 23 can provide a certain tensile force to the flexible screen 1, which is more advantageous for deformation of the flexible display device.

[0026] The magnitude relationship between the first elastic force F1 and the second elastic force F2 is not limited in the present embodiment. That is, the first elastic force F1 may be greater than, less than, or equal to the second elastic force F2. In addition to the above components, the flexible display device may also include other components depending on the actual use. For example, the flexible display device further includes a circuit board fixing member 5 for attaching a flexible circuit board. The circuit board fixing member 5 is fixedly connected to the first screen edge fixing member 3. The exterior of the telescopic structural member S is provided with a decorative member 10a, a holding frame structure 10b, a bottom cover 10c, an electronic assembly 10d, control keys 10e, and a control key mounting frame 10f for mounting the control keys 10e. The holding frame structure 10b and the bottom cover 10c can press and fix components such as the telescopic structural member S, the electronic assembly 10d, and the control keys 10e, while the decorative member 10a serves to enhance the aesthetics of the flexible display device.

[0027] In some embodiments, referring to Figures 7 to 11, a first sliding guide mechanism D1 is provided between the fixed base 2 and the first screen end fixing member 3, and a second sliding guide mechanism D2 is provided between the fixed base 2 and the second screen end fixing member 4.

[0028] The first sliding guide mechanism D1 is for realizing a sliding connection between the fixed base 2 and the first screen end fixing member 3, and the first screen end fixing member 3 can move relatively to the fixed base 2 along the first direction X via the first sliding guide mechanism D1. The second sliding guide mechanism D2 is for realizing a sliding connection between the fixed base 2 and the second screen end fixing member 4, and the second screen end fixing member 4 can move relatively to the fixed base 2 along the first direction X via the second sliding guide mechanism D2.

[0029] The structures of the first sliding guide mechanism D1 and the second sliding guide mechanism D2 are not limited in the embodiments of the present application. For example, the first sliding guide mechanism D1 has a slider and sliding groove structure that fit together, with one of the slider and sliding groove located on the fixed base 2 and the other located on the first screen end fixing member 3. The second sliding guide mechanism D2 is similar, and its description will be omitted in the embodiments of the present application.

[0030] The number of first sliding guide mechanisms D1 is not limited in the present embodiment. That is, the number of first sliding guide mechanisms D1 may be one or more. When there are more than one first sliding guide mechanisms D1, the first sliding guide mechanisms D1 are arranged side by side to improve the reliability of the sliding connection between the first screen end fixing member 3 and the fixed base 2, and the second sliding guide mechanism D2 is arranged in the same manner.

[0031] In some embodiments, as shown in Figures 7, 8 and 11, the first sliding guide mechanism D1 includes a first guide slider 24 provided on the fixed base 2 and a first sliding groove 31 provided on the first screen end fixing member 3 and extending along the first direction X, and the first guide slider 24 is slidably mounted in the first sliding groove 31.

[0032] The first sliding groove 31 is located in the first screen end fixing member 3, and exemplarily, the first screen end fixing member 3 includes a first sliding groove portion 35, and the first sliding groove 31 is provided in the first sliding groove portion 35, and the first sliding groove portion 35 is removably connected to other structures in the first screen end fixing member 3. The first guide slider 24 is located in the fixed base 2, and optionally, the first guide slider 24 may be removably connected to other structures in the fixed base 2.

[0033] The first sliding groove 31 extends along the first direction X, and the first guide slider 24 is mounted in the first sliding groove 31 and can slide relatively along the first direction X within the first sliding groove 31. The first screen edge fixing member 3 realizes relative movement in the first direction X with the fixed base 2 by fitting the first sliding groove 31 into the first guide slider 24. Here, the first direction X intersects with the thickness direction Z, and for example, the first direction X is perpendicular to the thickness direction Z, and the first direction X is the extension and contraction direction of the flexible display device.

[0034] In some embodiments, as shown in FIG. 10 , the second sliding guide mechanism D2 includes a second sliding groove 25 provided on the fixed base 2 and extending along the first direction X, and a second guide slider 41 provided on the second screen end fixing member 4, and the second guide slider 41 is slidably mounted in the second sliding groove 25.

[0035] The second sliding groove 25 is located on the fixed base 2 and extends along the first direction X, and the second guide slider 41 is located on the second screen end fixing member 4, and the second guide slider 41 can slide relative to the second sliding groove 25 along the first direction X. The second screen end fixing member 4 realizes relative movement in the first direction X with the fixed base 2 by fitting the second sliding groove 25 into the second guide slider 41.

[0036] In some embodiments, as shown in Figures 7, 8 and 10, the fixed base 2 includes a sliding guide mounting portion 28, and the first guide slider 24 and the second sliding groove 25 are both provided in the sliding guide mounting portion 28.

[0037] The sliding guide mounting portion 28 is a portion of the fixed base 2 for installing the first guide slider 24 and the second sliding groove 25. The second sliding groove 25 may be formed by hollowing out the sliding guide mounting portion 28, and the first guide slider 24 may be fixedly connected to the sliding guide mounting portion 28 by a method such as bolt connection. For example, the first guide slider 24 and the second sliding groove 25 are arranged side by side in the second direction Y.

[0038] In the embodiment of the present application, the sliding guide mounting part 28 simultaneously mounts and installs the first guide slider 24 and the second sliding groove 25, and further, the first guide slider 24 and the second sliding groove 25 can be mounted by sharing a partial structure in the sliding guide mounting part 28. This design reduces the internal space occupied by the first sliding guide mechanism D1 and the second sliding guide mechanism D2 of the flexible display device, thereby improving space utilization.

[0039] In some embodiments, the fixed base 2 further includes a support beam 26 extending along a second direction Y, the first direction X intersecting the second direction Y, and the sliding guide mounting portion 28 connected to the support beam 26.

[0040] The support beam 26 is connected to and fixed in position by the sliding guide mounting portion 28. The support beam 26 extends along the second direction Y, the first direction X intersects with the second direction Y, and, for example, the first direction X, the second direction Y, and the thickness direction Z are provided two by two perpendicular to each other.

[0041] Since the support beam 26 extends along the second direction Y, if there are a plurality of sliding guide mounting portions 28, the plurality of sliding guide mounting portions 28 are provided side by side in the second direction Y. For example, if there are two sliding guide mounting portions 28, the two sliding guide mounting portions 28 are provided at both ends of the support beam 26 in the second direction Y.

[0042] In the embodiment of the present application, by providing a support beam 26, multiple sliding guide mounting portions 28 can be installed simultaneously on the fixed base 2, and the relative positions of the multiple sliding guide mounting portions 28 can be fixed, thereby improving the reliability of the sliding connection between the fixed base 2 and the first screen end fixing member 3, and between the fixed base 2 and the second screen end fixing member 4.

[0043] In some embodiments, as shown in FIGS. 4 and 7, the rotation shaft 21 and the sliding guide mounting portion 28 are located on either side of the support beam 26 in the first direction X.

[0044] Support beam 26 is used to connect sliding guide mounting portion 28, and support beam 26 further separates rotation shaft 21 from sliding guide mounting portion 28 so that rotation shaft 21 and sliding guide mounting portion 28 are located on either side of support beam 26 in first direction X. This design reduces the effect of movement of first screen edge fixing member 3 and second screen edge fixing member 4 on the rotation of rotation shaft 21, improving the reliability of the internal structure of the flexible display device.

[0045] In some alternative embodiments, the fixed base 2 further includes a hanger structure connected to the support beam 26, the hanger structure being located on a side of the support beam 26 away from the sliding guide mounting portion 28, the hanger structure having a through-hole extending along the first direction X, and the rotating shaft 21 being rotatably connected within the through-hole of the hanger structure via a structure such as a nut and a bearing.

[0046] In some embodiments, the fixed base 2 further includes an elastic member mounting portion 27 connected to the sliding guide mounting portion 28, and at least one of the first elastic member 22 and the second elastic member 23 is attached to the elastic member mounting portion 27, with the output end of the first elastic member 22 connected to the first screen edge fixing member 3 and the output end of the second elastic member 23 connected to the second screen edge fixing member 4.

[0047] The elastic member mounting portion 27 is connected to the sliding guide mounting portion 28, and the sliding guide mounting portion 28 is connected to the support beam 26. The embodiment of the present application is not limited to the relative positional relationship between the support beam 26 and the elastic member mounting portion 27. For example, the support beam 26 and the elastic member mounting portion 27 are provided with a gap between them in the first direction X.

[0048] The elastic member mounting portion 27 is for mounting at least one of the first elastic member 22 and the second elastic member 23, and both the first elastic member 22 and the second elastic member 23 are selectively fixed to the elastic member mounting portion 27. The embodiment of the present application is not limited to the connection relationship between the first elastic member 22 or the second elastic member 23 and the elastic member mounting portion 27. Exemplarily, the first elastic member 22 and the second elastic member 23 are fixed to the elastic member mounting portion 27 by welding or adhesive.

[0049] The output end of the first elastic member 22 is connected to the first screen edge fixing member 3 and can move synchronously with the first screen edge fixing member 3. The first elastic member 22 applies a first elastic force F1 to the first screen edge fixing member 3 via the output end, and the connection method between the output end of the first elastic member 22 and the first screen edge fixing member 3 includes, but is not limited to, adhesive bonding and welding.

[0050] The output end of the second elastic member 23 is connected to the second screen edge fixing member 4 and can move synchronously with the second screen edge fixing member 4. The second elastic member 23 applies a second elastic force F2 to the second screen edge fixing member 4 via the output end, and the connection method between the output end of the second elastic member 23 and the second screen edge fixing member 4 includes, but is not limited to, adhesive bonding and welding.

[0051] In some embodiments, referring to Figure 12, the first screen end fixing member 3 includes a first main body 32 and a first connecting portion 33 provided on the side of the first main body 32 facing the second screen end fixing member 4, and the output end of the first elastic member 22 is connected to the first connecting portion 33.

[0052] The first main body 32 may have a plate-like structure, and the first connecting portion 33 may be connected to the first main body 32. Similarly, the first sliding groove portion 35 may be connected to the first main body 32, and the first sliding groove portion 35 and the first connecting portion 33 may be installed with a misalignment on the first main body 32. The first connecting portion 33 is for realizing the connection and fixation between the first screen end fixing member 3 and the output end of the first elastic member 22, and the first elastic member 22 applies a first elastic force F1 to the first screen end fixing member 3 via the first connecting portion 33.

[0053] In some embodiments, as shown in Figures 9 to 11, the second screen end fixing member 4 includes a second main body 42 and a second connecting portion 43 provided on the side of the second main body 42 facing the first screen end fixing member 3, and the output end of the second elastic member 23 is connected to the second connecting portion 43.

[0054] Like the first body 32, the second body 42 may have a plate-like structure, and the second connecting portion 43 may be connected to the second body 42. Similarly, the second guide slider 41 may be connected to the second body 42, and the second connecting portion 43 and the second guide slider 41 may be located on the same side of the second body 42 in the thickness direction Z and may be offset from each other. The second connecting portion 43 realizes the connection and fixation between the second screen edge fixing member 4 and the output end of the second elastic member 23, and the second elastic member 23 applies a second elastic force F2 to the second screen edge fixing member 4 via the second connecting portion 43.

[0055] In some embodiments, as shown in Figures 4 to 6, the flexible display device further includes an expansion section support member 6 fixed to the fixed base 2, the expansion section support member 6 is provided on the side of the first body 32 facing the second screen end fixing member 4, the expansion section support member 6 has an escape groove 61, and the first connection portion 33 is arranged to be relatively slidable within the escape groove 61.

[0056] The unfolding section support member 6 is fixed to the fixed base 2, and the unfolding section support member 6 and the first screen end fixing member 3 are slidable relative to each other. When the flexible display device transitions from the contracted state to the unfolded state, relative sliding occurs between the first screen end fixing member 3 and the fixed base 2, and a partial structure of the flexible screen 1 is positioned above the fixed base 2 and displays a specific image screen. However, because the fixed base 2 is not a single-plane structure, it is difficult for the fixed base 2 alone to meet the demand for supporting the flexible screen 1.

[0057] In this case, in the embodiment of the present application, an unfolding section support member 6 is added, and the unfolding section support member 6 is connected and fixed to the fixed base 2, that is, the unfolding section support member 6 slides relative to the first screen end fixing member 3 and can play the role of supporting the flexible screen 1 from the front instead of the fixed base 2. As a result, in the unfolded state, the part of the flexible screen 1 that realizes the display effect can have a better supporting effect, and the reliability and service life of the flexible display device can be improved.

[0058] Furthermore, the unfolding section support member 6 and the first connecting portion 33 are both located on the side of the first body 32 facing the second screen edge fixing member 4, and the first screen edge fixing member 3 moves relative to the unfolding section support member 6. Therefore, movement of the first connecting portion 33 is likely to interfere with the unfolding section support member 6. To improve the reliability of the expansion and contraction of the flexible display device, in this embodiment, the unfolding section support member 6 is provided with an escape groove 61 extending along the first direction X, and at least a portion of the first connecting portion 33 is located within the escape groove 61 and is slidable relative to the escape groove 61. This design makes it possible to avoid contact between the first screen edge fixing member 3 and the unfolding section support member 6 during the expansion and contraction of the flexible display device, thereby improving reliability.

[0059] In some embodiments, as shown in FIG. 5, the flexible display device is arranged so that the deployment section support member 6 and the first screen edge fixing member 3 at least partially overlap in the thickness direction Z in the contracted state.

[0060] The phrase "the unfolding section support member 6 and the first screen end fixing member 3 are arranged to at least partially overlap in the thickness direction Z" mentioned in the examples of the present application means that in the contracted state, the orthogonal projection in the thickness direction Z of the unfolding section support member and the orthogonal projection in the thickness direction Z of the first screen end fixing member 3 overlap.

[0061] Since the unfolding section support member 6 is arranged to at least partially overlap the first screen end fixing member 3 in the thickness direction Z in the contracted state, in the contracted state the unfolding section support member 6, together with the first screen end fixing member 3, performs a supporting function for the part of the flexible screen 1 that performs the display function, thereby improving the reliability of use of the flexible display device in the contracted state.

[0062] At the same time, as the flexible display device transitions from the contracted state to the expanded state, the size of the orthogonal projection overlap area in the thickness direction Z between the expansion section support member 6 and the first screen end fixing member 3 gradually decreases, and the portion of the expansion section support member 6 that extends beyond the first screen end fixing member 3 also provides support for the flexible screen 1.

[0063] In addition, when the flexible display device is in an unfolded state, the unfolded portion support member 6 may be arranged to at least partially overlap with the first screen end fixing member 3 in the thickness direction Z, or there may be no overlapping area with the first screen end fixing member 3 in the thickness direction Z, and the embodiments of the present application are not limited to these.

[0064] In some embodiments, referring to Figures 5, 6 and 13, the flexible display device further includes a curved support member 7, which has a first end 71 and a second end 72 opposite in its extension direction, and the first end 71 is fixed to the first screen edge fixing member 3 and the second end 72 is fixed to the second screen edge fixing member 4.

[0065] The curved support member 7, like the deployment section support member 6, is intended to support the flexible screen 1. However, the difference is that the curved support member 7 is relatively curved and covers at least a part of the structure of the rotation shaft 21. Specifically, the curved support member 7 has a first end 71 and a second end 72. The first end 71 is fixed to the first screen edge fixing member 3 by welding, adhesive, or the like. The curved support member 7 then extends from the first end 71 to the position of the rotation shaft 21, covers at least a part of the structure of the rotation shaft 21, and curves toward the side closer to the backlight surface of the flexible display device. Finally, the second end 72 of the curved support member 7 may be fixedly connected to the second screen edge fixing member 4 by welding, adhesive, or the like.

[0066] During the process of unfolding or partially unfolding the flexible display device, the first screen end fixing member 3 moves the first end 71 of the curved support member 7 in a direction away from the rotation axis 21, and the second screen end fixing member 4 moves the second end 72 of the curved support member 7 in a direction toward the rotation axis 21, thereby gradually increasing the size of the curved support member 7 located on the side of the fixed base 2 closer to the first screen end fixing member 3, and thereby increasing the displayable screen size of the flexible display device.

[0067] In the embodiment of the present application, the curved support member 7 is provided to support the flexible screen 1 at the position of the rotation axis 21, thereby improving the reliability of the flexible display device during expansion and contraction. The embodiment of the present application is not limited to the material and size of the curved support member 7, and the curved support member 7 may be a flexible structure that can be bent or deformed, or a bendable rigid structure that can improve the supporting effect for the flexible screen 1.

[0068] In some embodiments, at least some structure of the curved support member 7 contacts the deployment section support member 6 .

[0069] Since the first end 71 of the curved support member 7 is connected to the first screen end fixing member 3, at least a part of the structure of the curved support member 7 is located on the side of the fixed base 2 facing the first screen end fixing member 3, and is arranged opposite the expansion section support member 6 in the thickness direction Z.

[0070] Based on this, in the embodiment of the present application, a partial structure of the curved support member 7 is brought into contact with the unfolding section support member 6, and the flexible screen 1 simultaneously receives support from the curved support member 7 and the unfolding section support member 6 at the position of the unfolding section support member 6, thereby realizing a double support effect and improving the support effect for the flexible screen 1 inside the flexible display device.

[0071] In some embodiments, one end of the flexible screen 1 is fixed to an end of the first body 32 remote from the rotation axis 21 .

[0072] Since the first body 32 itself has a plate-like structure and one end of the flexible screen 1 is fixed to an end of the first body 32 away from the rotation axis 21, most of the structure of the first body 32 in the first screen end fixing member 3 plays a role in supporting the flexible screen 1, thereby reducing the risk of the flexible screen 1 being deformed by external force.

[0073] In some embodiments, one end of the flexible screen 1 is fixed to an end of the second body 42 remote from the rotation axis 21 .

[0074] Since the second body 42 itself has a plate-like structure and one end of the flexible screen 1 is fixed to an end of the second body 42 that is away from the rotation axis 21, most of the structure of the second body 42 in the first screen end fixing member 3 plays a role in supporting the flexible screen 1, thereby reducing the risk of the flexible screen 1 being deformed by external force.

[0075] In some embodiments, the unfolding section support member 6 is provided on the side of the first screen edge fixing member 3 that is adjacent to the second screen edge fixing member 4, and the curved support member 7 includes a flexible support portion 73 and a rigid support portion 74 that is provided on the side of the flexible support portion 73 that is adjacent to the unfolding section support member 6, and the rigid support portion 74 contacts the unfolding section support member 6.

[0076] The curved support member 7 includes a flexible support portion 73 and a rigid support portion 74. The flexible support portion 73 can meet the curved requirements of the curved support member 7, and the rigid support portion 74 can improve the support strength of the curved support member 7. Both of them work together to meet the usage requirements of the flexible display device.

[0077] In the embodiment of the present application, a rigid support part 74 is provided on the flexible support part 73, and the rigid support part 74 is installed in the gap space between the flexible support part 73 and the deployment part support member 6, so that the flexible support part 73 receives support from the rigid support part 74, which reduces the risk of deformation of the flexible support part 73 and improves the service life of the flexible display device.

[0078] At the same time, the rigid support portion 74 realizes mutual contact between the curved support member 7 and the deployment portion support member 6, thereby realizing a double support effect for the flexible screen 1 and improving the reliability of use of the flexible display device.

[0079] In some embodiments, as shown in FIG. 13, the rigid support portion 74 is strip-shaped and there are multiple rigid support portions 74, which are spaced apart in the extension direction of the flexible support portion 73.

[0080] Generally, the flexible support portion 73 has a strong bending ability, while the rigid support portion 74 has a weak bending ability. If the rigid support portion 74 has a single plate-like structure, it is difficult for the bending support member 7 to meet the bending requirements.

[0081] Therefore, in the embodiment of the present application, a plurality of rigid support portions 74 are provided, and the plurality of rigid support portions 74 are provided at intervals in the extension direction of the flexible support portion 73, thereby curving the region between adjacent rigid support portions 74 in the flexible support portion 73, thereby meeting the curvature requirements of the curved support member 7. Illustratively, each rigid support portion 74 is a strip-like structure that extends and forms along the second direction Y, and the spacing size between any two adjacent rigid support portions 74 remains the same.

[0082] In the embodiment of the present application, by providing multiple rigid support portions 74 spaced apart from each other, the structural strength of the curved support member 7 is satisfied, and the curved support member 7's curvature requirements are met, resulting in high practicality and reliability.

[0083] In some embodiments, the flexible support portion includes a third region A3 and a first region A1 and a second region A2 located on either side of the third region A3 in the extension direction of the curved support member 7, and the rigid support portion 74 is provided in the third region A3, the first end 71 is provided in the first region A1, and the second end 72 is provided in the second region A2.

[0084] The flexible support part 73 has at least three areas: a first area A1, a second area A2, and a third area A3. The first end part 71 is located within the first area A1 and is intended to connect and fix the curved support member 7 and the first screen edge fixing member 3. The second end part 72 is located within the second area A2 and is intended to connect and fix the curved support member 7 and the second screen edge fixing member 4. The third area A3 is interposed between the first area A1 and the second area A2, and at least a portion of the structure in the third area A3 of the flexible support part 73 is provided so as to cover the rotation shaft 21.

[0085] In the first area A1 and the second area A2, the flexible support section 73 is fixed in direct contact with the first screen edge fixing member 3 and the second screen edge fixing member 4, and therefore, in the embodiment of the present application, no rigid support section 74 is provided in the first area A1 or the second area A2. In the third area A3, a rigid support section 74 is provided in the gap space between the flexible support section 73 and the unfolding section support member 6, and therefore the unfolding section support member 6 can provide support to the third area A3 of the flexible support section 73 via the rigid support section 74, and the flexible screen 1 can obtain the dual support effect of the unfolding section support member 6 and the rigid support section 74 at the position of the third area A3.

[0086] In some embodiments, referring to Figures 5, 6, 13 and 14, one end of the first screen end fixing member 3 adjacent to the curved support member 7 has a first recessed base 34, the first end 71 of the flexible support portion 73 is provided in the first recessed base 34, and the thickness of the flexible support portion 73 is the same as the depth of the first recessed base 34.

[0087] The "thickness of the flexible support portion 73" referred to in the examples of this application refers to the size of the flexible support portion 73 in the thickness direction Z, and the "depth of the first recessed base 34" refers to the size of the first recessed base 34 in the thickness direction Z.

[0088] The first recessed base 34 of the first screen end fixing member 3 accommodates the first end 71 of the flexible support part 73, and the depth of the first recessed base 34 matches the thickness of the flexible support part 73, so that the first end 71 of the flexible support part 73 can fit perfectly into the first recessed base 34. Furthermore, no protrusion or recessed structure occurs at the connection position between the first screen end fixing member 3 and the flexible support part 73, i.e., a flat surface can be formed at the connection position between the flexible support part 73 and the first screen end fixing member 3, so that the flexible screen 1 can be placed more effectively.

[0089] In addition, similar to the first screen end fixing member 3, the second screen end fixing member 4 may be provided with a second recessed base, which is for accommodating the second end 72 of the flexible support part 73 and ensuring that a flat surface is formed at the connection position between the flexible support part 73 and the second screen end fixing member 4, thereby allowing the flexible screen 1 to be better placed.

[0090] 4 and 15 , in some embodiments, the flexible display device further includes at least one of a power supply structure 8 and a stress balancing structure 9. The power supply structure 8 and the stress balancing structure 9 are provided between the first screen edge fixing member 3 and the fixed base 2, or between the second screen edge fixing member 4 and the fixed base 2, or between the fixed base 2 and the rotation shaft 21, with the power supply structure 8 being arranged to supply a driving force for relative movement between the fixed base 2 and the first screen edge fixing member 3 and an anchoring force (a force that maintains the relative position) when the fixed base 2 and the first screen edge fixing member 3 are fixed relative to each other, and the stress balancing structure 9 being arranged to supply an anchoring force when the fixed base 2 is fixed to the first screen edge fixing member 3.

[0091] The power supply structure 8 is a structure that can actively supply power to the fixed base 2 or the first screen end fixing member 3, and the embodiments of the present application are not limited to a specific location of the power supply structure 8. The power supply structure 8 may be located between the first screen end fixing member 3 and the fixed base 2, or between the second screen end fixing member 4 and the fixed base 2, or similarly, between the fixed base 2 and the rotation shaft 21. In other words, it is sufficient for the power supply structure 8 to be able to supply power to at least one of the fixed base 2 or the first screen end fixing member 3.

[0092] The power supply structure 8 can realize the automation of the contraction or unfolding of the flexible display device. At the same time, when the flexible display device is in the contracted or unfolded state, the power supply structure 8 can further provide a certain force so that the fixing base 2 and the first screen edge fixing member 3 remain fixed relative to each other.

[0093] The stress balancing structure 9 is a structure that provides a certain resistance force to the fixed base 2 or the first screen edge fixing member 3 during the expansion and contraction process of the flexible display device, allowing it to move smoothly. At the same time, when the flexible display device is in a contracted state or an unfolded state, the stress balancing structure 9 can provide a certain stress so that the fixed base 2 and the first screen edge fixing member 3 remain fixed relative to each other.

[0094] 16 , in some embodiments, the power supply structure 8 includes a motor lead screw module. Illustratively, the motor lead screw module includes a mounting base 81, a driving unit 82, a transmission member 83, and a screw block 84. The mounting base 81 is fixed to the first screen end fixing member 3, and the driving unit 82 and the transmission member 83 are both provided on the mounting base 81. The driving unit 82 may be a device such as a servo motor or a stepping motor, and the transmission member 83 may be a threaded rod that extends along the first direction X. Both ends of the transmission member 83 are rotatably connected to the mounting base 81 via rolling bearings or sliding bearings, and the driving unit 82 can rotate the transmission member. The screw block 84 is threadedly engaged with the transmission member 83 and is connected and fixed to the fixed base 2. When the driver 82 rotates and drives the transmission member 83, the screw block 84 moves in the first direction X, thereby moving the first screen edge fixing member 3 relative to the fixed base 2. For example, the fixed base 2 includes a connection arm 29, and the screw block 84 is fixedly connected to the connection arm 29. The cooperation of the screw block 84 and the transmission member (lead screw) 83 allows the first screen edge fixing member 3 and the fixed base 2 to move relatively. Note that, in order to ensure uniform speed during the unfolding of the flexible display device, it is necessary to control the sum of the power F3 supplied by the power supply structure 8 and the first elastic force F1 to be equal to the second elastic force F2. In this case, the smaller the difference between the first elastic force F1 and the second elastic force F2, the smaller the power F3 that the power supply structure 8 must supply, which means that it is easier to achieve a thinner power supply structure 8 and flexible display device.

[0095] In some embodiments, the stress balancing structure 9 includes a damper. The damper can serve to buffer external forces. When the flexible display device changes state due to human force, the damping generated by the damper is transmitted to the fixing base 2 and the first screen edge fixing member 3, thereby mitigating instantaneous impact on the flexible screen 1 caused by factors such as external forces, preventing the flexible display device from expanding and contracting too quickly, and ensuring smooth expansion and contraction of the flexible screen 1. At the same time, when the state of the flexible display device remains constant, the damper provides a certain resistance to prevent the flexible display device from expanding and contracting without being subjected to external forces, thereby improving the reliability of use of the flexible display device.

[0096] Furthermore, the stress balancing structure 9 cannot automatically contract or unfold the flexible display device, unlike the power supply structure 8. Therefore, when using the stress balancing structure 9, the flexible display device needs to be manually pulled to expand or contract. In this process, the first elastic force F1 and the second elastic force F2 function similarly to the stress balancing structure 9 to some extent, thereby ensuring that the flexible display device can stably expand and contract at a constant speed.

[0097] In some embodiments, the first elastic member 22 and the second elastic member 23 are constant force springs, i.e., the magnitude of the first elastic force F1 or the magnitude of the second elastic force F2 does not change with movement of its corresponding output end.

[0098] In the related art, the tensile force that the flexible screen 1 receives during the sliding process increases with the increase in the amount of tension, which causes the flexible screen 1 to receive a large force in the unfolded state, which is likely to cause problems such as display abnormalities.

[0099] In the embodiment of the present application, the first elastic member 22 and the second elastic member 23 are constant force springs, so that the stress on both ends of the flexible screen 1 does not change with changes in the state of the flexible display device, thereby making the stress on the flexible screen 1 in the unfolded state more stable and reducing the risk of display abnormalities. Optionally, the magnitudes of the first elastic force F1 and the second elastic force F2 are both constant.

[0100] In some embodiments, the ratio of the first elastic force F1 to the second elastic force F2 is A, where A satisfies 70%≦A≦130%.

[0101] The first elastic force F1 and the second elastic force F2 each exert a pulling force on both ends of the flexible screen 1. To ensure that the forces acting on both ends of the flexible screen 1 are as balanced as possible, in this embodiment, the ratio A of the first elastic force F1 to the second elastic force F2 is set to between 70% and 130%. Exemplarily, A is one of 70%, 85%, 100%, 110%, and 130%.

[0102] As can be seen from the above, during the unfolding and contracting process of the flexible display device, when the flexible display device unfolds and contracts at a substantially constant speed, it is necessary to control the sum of the power F3 supplied by the power supply structure 8 and the first elastic force F1 to be slightly larger or slightly smaller than the second elastic force F2. In this case, the smaller the difference between the first elastic force F1 and the second elastic force F2, the smaller the power F3 that the power supply structure 8 needs to supply, which means that it is easier to miniaturize the power supply structure 8 and thereby to make the flexible display device thinner.

[0103] Similarly, if only the stress balancing structure (damper) is employed without using the power supply structure 8, during the unfolding and contracting process of the flexible display device, when the flexible display device unfolds and contracts at a substantially constant speed, the sum of the action force provided by the user and the first elastic force F1 needs to be slightly greater or slightly smaller than the second elastic force F2. In this case, the smaller the difference between the first elastic force F1 and the second elastic force F2, the smaller the action force the user needs to provide, making operation easier. At the same time, the smaller the balancing force that the stress balancing structure (damper) needs to provide during unfolding, contraction, and the resting state after partial unfolding, the easier it is to realize a smaller stress balancing structure (damper), which in turn realizes a thinner flexible display device.

[0104] Optionally, the magnitude of the first elastic force F1 and the second elastic force F2 are equal, which can further reduce the size of the power supply structure 8 and / or the stress balancing structure (damper), and more preferably achieve a thinner flexible display device.

[0105] In the embodiment of the present application, by limiting the magnitude of the ratio A of the first elastic force F1 to the second elastic force F2, the stresses received by both ends of the flexible screen 1 are relatively stable and consistent, thereby improving the smoothness of expansion and contraction of the flexible display device during the expansion and contraction process of the flexible display device.

[0106] In some embodiments, as shown in FIG. 4, the number of first elastic members 22 is two, and the two first elastic members 22 are provided side by side.

[0107] As can be seen from the above, the output end of the first elastic member 22 is connected to the first screen edge fixing member 3, and the first elastic member 22 provides a first elastic force F1 to the flexible screen 1 via the first screen edge fixing member 3. The presence of the first elastic force F1 reduces the magnitude of the stress required when the flexible display device transitions from the contracted state to the unfolded state, and further reduces the number or size of the power supply structure 8 or the stress balancing structure 9 to a certain extent, allowing more components to be installed inside the flexible display device and reducing the overall size of the flexible display device.

[0108] In some embodiments, the number of second elastic members 23 is two, and the two second elastic members 23 are arranged side by side. The two first elastic members 22 are arranged corresponding to the two second elastic members 23, and the two first elastic members 22 and the two second elastic members 23 simultaneously exert tension on both ends of the flexible screen 1, thereby reducing the problem of display abnormalities occurring on the flexible screen 1. Optionally, the two second elastic members 23 are located between the two first elastic members 22.

[0109] In some embodiments, the two first elastic members 22 or the two second elastic members 23 are arranged symmetrically with respect to the center position of the flexible display device.

[0110] The "center position" referred to in the embodiments of the present application specifically refers to a structure at the center position in the second direction of the flexible display device. This design makes the tensile force generated by the first elastic member 22 or the second elastic member 23 on the flexible screen 1 more balanced, and effectively prevents display abnormalities caused by uneven forces at various parts of the flexible screen 1.

[0111] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and equivalents may be substituted for parts therein without departing from the scope of the present application. In particular, the technical features recited in each embodiment may be arbitrarily combined unless there is a conflict of structure. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fixed base and a rotation shaft provided on the fixed base; a first screen end fixing member that is slidably attached to the fixing base and whose sliding direction is perpendicular to the axial direction of the rotation shaft; a second screen end fixing member that is slidably attached to the fixing base and whose sliding direction is perpendicular to the axial direction of the rotation shaft; a flexible screen that bypasses the rotation axis and has one end fixed to the first screen end fixing member and the other end fixed to the second screen end fixing member; at least one first elastic member attached between the fixing base and the first screen end fixing member and providing a first elastic force to the first screen end fixing member; at least one second elastic member attached between the fixing base and the second screen end fixing member and providing a second elastic force to the second screen end fixing member; The first elastic force can at least partially balance the second elastic force. Flexible display devices.

2. a first sliding guide mechanism is provided between the fixed base and the first screen end fixing member, a second sliding guide mechanism is provided between the fixed base and the second screen end fixing member; 2. The flexible display device according to claim 1.

3. the first sliding guide mechanism includes a first guide slider provided on the fixed base and a first sliding groove provided on the first screen end fixing member and extending along a first direction, and the first guide slider is slidably mounted in the first sliding groove; The flexible display device of claim 2 .

4. the second sliding guide mechanism includes a second sliding groove provided on the fixed base and extending along a first direction, and a second guide slider provided on the second screen end fixing member, the second guide slider being slidably mounted in the second sliding groove; The flexible display device according to claim 3 .

5. the fixed base includes a slide guide attachment portion, and the first guide slider and the second slide groove are both provided on the slide guide attachment portion. The flexible display device according to claim 4 .

6. the fixed base further includes a support beam extending along a second direction, the first direction intersects with the second direction, and the sliding guide attachment portion is connected to the support beam. The flexible display device according to claim 4 .

7. the rotation shaft and the sliding guide attachment portion are located on both sides of the support beam in the first direction, the fixed base further includes an elastic member mounting portion connected to the sliding guide mounting portion, at least one of the first elastic member and the second elastic member is attached to the elastic member mounting portion, an output end of the first elastic member is connected to the first screen end fixing member, and an output end of the second elastic member is connected to the second screen end fixing member. The flexible display device of claim 6 .

8. the first screen end fixing member includes a first main body and a first connecting portion provided on a side of the first main body facing the second screen end fixing member, and an output end of the first elastic member is connected to the first connecting portion. The flexible display device of claim 7 .

9. the second screen end fixing member includes a second main body and a second connecting portion provided on a side of the second main body facing the first screen end fixing member, and an output end of the second elastic member is connected to the second connecting portion. The flexible display device of claim 8 .

10. Further included is a deployment portion support member fixed to the fixed base, the unfolding portion support member is provided on a side of the first main body facing the second screen end fixing member, the unfolding portion support member is provided with a recess groove, and the first connection portion is arranged to be relatively slidable within the recess groove. The flexible display device of claim 9 .

11. the flexible display device has a contracted state and an unfolded state, and in the contracted state, the unfolded portion support member and the first screen edge fixing member are arranged to at least partially overlap in a thickness direction of the flexible display device. The flexible display device of claim 10.

12. further comprising a curved support member; the curved support member has a first end and a second end that face each other in its extension direction, the first end being fixed to the first screen end fixing member, and the second end being fixed to the second screen end fixing member; The flexible display device of claim 10.

13. At least a partial structure of the curved support member is in contact with the deployment portion support member.

13. The flexible display device of claim 12.

14. One end of the flexible screen is fixed to one end of the first body away from the rotation axis, or one end of the flexible screen is fixed to one end of the second body away from the rotation axis.

13. The flexible display device of claim 12.

15. the flexible support portion includes a third region, and a first region and a second region located on both sides of the third region in the extension direction of the curved support member, the rigid support portion is provided in the third region, the first end portion is provided in the first region, and the second end portion is provided in the second region.

13. The flexible display device of claim 12.

16. an end of the first screen end fixing member adjacent to the curved support member having a first recessed base, the flexible support portion being provided in the first recessed base, and the thickness of the flexible support portion being the same as the depth of the first recessed base; 16. The flexible display device of claim 15.

17. the screen edge fixing device further includes at least one of a power supply structure and a stress balancing structure provided between the first screen edge fixing member and the fixed base, the power supply structure and the stress balancing structure being provided between the first screen edge fixing member and the fixed base, or between the second screen edge fixing member and the fixed base, or between the fixed base and the rotation shaft, the power supply structure being arranged to supply a driving force for moving the fixed base relative to the first screen edge fixing member and an anchoring force when the fixed base is fixed to the first screen edge fixing member; the stress balancing structure is arranged to provide an anchoring force when the fixing base is fixed to the first screen end fixing member. The flexible display device of claim 1 .

18. the power supply structure includes a motor lead screw module; the stress balancing structure includes a damper; 18. The flexible display device of claim 17.

19. the first elastic member and the second elastic member are constant force springs, a ratio of the first elastic force to the second elastic force is A, and A satisfies 70%≦A≦130%; 18. The flexible display device of claim 17.

20. There are two first elastic members, and the two first elastic members are provided side by side, There are two second elastic members, and the two second elastic members are provided side by side, The two second elastic members are located between the two first elastic members, the two first elastic members or the two second elastic members are provided symmetrically with respect to a central position of the flexible display device; The flexible display device of claim 1 .

Images