Variable curvature adjustment device for a display and display

Abstract

The application relates to the technical field of display adjusting mechanisms, and provides a variable-curvature adjusting device for a display and the display, wherein the variable-curvature adjusting device for the display comprises a plurality of curvature adjusting units which are sequentially hinged, and the curvature adjusting units are used for connecting a flexible screen; the curvature adjusting unit comprises a first shaft, a second shaft, a third shaft, a fourth shaft and a first framework, a second framework, a third framework and a fourth framework which are sequentially hinged, the third framework is rotatably connected to the first shaft, the second framework is fixedly connected to the first shaft, the second framework and the third framework are rotatably connected to the second shaft, the second framework is rotatably connected to the third shaft, and the first framework is fixedly connected to the third shaft; the curvature adjusting unit further comprises a speed-increasing transmission mechanism and a constant-speed transmission mechanism, and the variable-curvature adjusting device for the display can facilitate the flexible screen to better form a display effect close to a circular arc.

Description

Technical Field

[0001] This application relates to the field of display adjustment mechanism technology, and more specifically, to a variable curvature adjustment device and display for a display. Background Technology

[0002] Monitors can be categorized into two types based on their curvature: flat-screen monitors and curved-screen monitors. Curved-screen monitors offer a wider viewing angle and better stereoscopic effect, conforming more closely to the structure of the human eye. Flat-screen monitors, on the other hand, offer better brightness, color accuracy, and clarity, with geometrically consistent images, making them more user-friendly for designers.

[0003] Existing technologies include displays that can be freely adjusted in both flat and curved states, combining the advantages of both. However, the screen curvature adjustment mechanisms used in such displays in the prior art suffer from problems such as inconsistent and unnatural curvature adjustment, which is not close enough to an arc and results in poor visual effects in the curved state. Summary of the Invention

[0004] The main objective of this invention is to provide a variable curvature adjustment device for a display, aiming to solve the technical problems of poor adjustment continuity and insufficient approximation of arc in the existing screen curvature adjustment mechanism.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a variable curvature adjustment device for a display, comprising:

[0006] Multiple curvature adjustment units are hinged sequentially, and the curvature adjustment units are used to connect to a flexible screen;

[0007] The curvature adjustment unit includes a first axis, a second axis, a third axis, a fourth axis, and a first frame, a second frame, a third frame, and a fourth frame that are hinged in sequence. The third frame is rotatably connected to the first axis, the second frame is fixedly connected to the first axis, both the second frame and the third frame are rotatably connected to the second axis, the second frame is rotatably connected to the third axis, and the first frame is fixedly connected to the third axis.

[0008] The curvature adjustment unit further includes a speed-increasing transmission mechanism connecting the second frame and the third frame. The speed-increasing transmission mechanism is used to increase the rotational speed of the first shaft and transmit it to the second shaft. The curvature adjustment unit also includes a constant-speed transmission mechanism connecting the first frame and the second frame. The constant-speed transmission mechanism is used to transmit the rotational speed of the second shaft to the third shaft at a constant speed.

[0009] Furthermore, the hinge axes of the first frame, second frame, third frame and fourth frame are arranged at equal intervals.

[0010] Furthermore, the third frame is rotatably connected to the fourth axis, and the fourth frame is fixedly connected to the fourth axis. The predetermined curvature adjustment unit among the plurality of curvature adjustment units includes a constant velocity reverse transmission mechanism connecting the third frame and the fourth frame. The constant velocity reverse transmission mechanism is used to transmit the rotational speed of the first axis to the fourth axis in a constant velocity reverse manner.

[0011] Furthermore, the centrally located curvature adjustment unit among the plurality of curvature adjustment units includes the constant velocity reverse transmission mechanism.

[0012] Furthermore, the speed-increasing transmission mechanism includes a first connecting arm, a second connecting arm, a third connecting arm, a fourth connecting arm, and a fifth connecting arm that are rotatably connected in sequence. The first connecting arm is fixedly connected to the first shaft, the third connecting arm is rotatably connected to the third frame, and the fifth connecting arm is rotatably connected to the second shaft.

[0013] Furthermore, the constant velocity transmission mechanism includes a sixth connecting arm, a seventh connecting arm, and an eighth connecting arm that are rotatably connected in sequence. The sixth connecting arm is fixedly connected to the second shaft, and the eighth connecting arm is fixedly connected to the third shaft.

[0014] Further, the constant velocity reverse transmission mechanism includes a movable arm, a ninth connecting arm, a tenth connecting arm, and an eleventh, twelfth, thirteenth, fourteenth, and fifteenth connecting arms that are rotatably connected in sequence. The middle part of the movable arm is movable and rotatably connected to the third frame. The first end of the ninth connecting arm is rotatably connected to the movable arm. The third and fourth connecting arms are rotatably connected to each other via a fifth axis. The second end of the ninth connecting arm is rotatably connected to the fifth axis. The eleventh connecting arm is fixedly connected to the fourth axis. The thirteenth connecting arm is rotatably connected to the third frame. The thirteenth and fourteenth connecting arms are rotatably connected to each other via a sixth axis. The first end of the tenth connecting arm is rotatably connected to the movable arm. The second end of the tenth connecting arm is rotatably connected to the sixth axis. The position where the movable arm connects to the tenth connecting arm is closer to the third frame than the position where the movable arm connects to the ninth connecting arm. The third and fourth frames are hinged via a seventh axis. The fifteenth connecting arm is rotatably connected to the seventh axis.

[0015] Furthermore, the variable curvature adjustment device for the display includes a movable arm bracket fixedly connected to the third frame, the movable arm bracket having an elongated hole extending parallel to the length direction of the movable arm, and the middle part of the movable arm being movably and rotatably connected to the elongated hole via an eighth axis.

[0016] Furthermore, the present invention also provides a display, including a support and a flexible screen, wherein the display further includes the aforementioned variable curvature adjustment device for the display, and the back side of the flexible screen is connected to the support via the variable curvature adjustment device for the display.

[0017] Furthermore, the display also includes a movable adjustment mechanism, and the variable curvature adjustment device for the display is connected to the support through the movable adjustment mechanism. The movable adjustment mechanism is at least capable of adjusting the lateral swing, vertical swing, and lifting motion of the variable curvature adjustment device for the display relative to the support.

[0018] The advantages of the variable curvature adjustment device for a display provided in this application are as follows:

[0019] In the variable curvature adjustment device for a display provided in this embodiment of the invention, multiple curvature adjustment units are arranged in sequence and each curvature adjustment unit is provided with multiple skeletons (first skeleton, second skeleton, third skeleton and fourth skeleton). In conjunction with the speed-increasing transmission mechanism and the constant speed transmission mechanism, when the outermost skeleton or another skeleton is moved, the other skeletons are linked in sequence, thereby rapidly changing the curvature. This makes it easier for the flexible screen to be fixed on multiple curved skeletons to form a better near-arc display effect.

[0020] In a further scheme, the constant speed reverse transmission mechanism also provides a symmetrical linkage mechanism. In this way, when the outermost frame of one end of the variable curvature adjustment device is moved to bend the entire frame between that frame and the linkage mechanism, the outermost frame of the other end of the variable curvature adjustment device and the entire frame between the linkage mechanism will also bend in the same way, thereby realizing the linkage of both sides of the flexible screen. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 An independent view of a curvature adjustment unit in a variable curvature adjustment device for a display provided for an embodiment of this application;

[0023] Figure 2 Another independent view of a curvature adjustment unit in a variable curvature adjustment device for a display provided in an embodiment of this application;

[0024] Figure 3A perspective view of a display in a planar state provided for one embodiment of this application;

[0025] Figure 4 A three-dimensional schematic diagram of a display in a curved state provided for one embodiment of this application;

[0026] Figure 5 An assembly diagram of a display provided for another embodiment of this application;

[0027] Figure 6 A schematic diagram showing the connection between the third frame and the back plate in a variable curvature adjustment device for a display provided in another embodiment of this application;

[0028] Figure 7 This is a schematic diagram comparing a display in a curved state with a standard circle, provided for another embodiment of this application.

[0029] The details of the reference numerals used in the above figures are as follows:

[0030] 1-Flexible screen; 2-First axis; 3-Second axis; 4-Third axis; 5-Fourth axis; 6-First frame; 7-Second frame; 8-Third frame; 9-Fourth frame; 10-First connecting arm; 11-Second connecting arm; 12-Third connecting arm; 13-Fourth connecting arm; 14-Fifth connecting arm; 15-Sixth connecting arm; 16-Seventh connecting arm; 17-Eighth connecting arm; 18-Moving arm; 19-Ninth connecting arm; 20-Tenth connecting arm; 21- 11th connecting arm; 22-12th connecting arm; 23-13th connecting arm; 24-14th connecting arm; 25-15th connecting arm; 26-5th axis; 27-6th axis; 28-7th axis; 29-Moving arm bracket; 30-Long hole; 31-8th axis; 32-Support; 33-Vertical movable joint; 34-Horizontal movable joint; 35-Back plate; 36-Screw; 37-Elastic buffer; 38-Snap plate; 39-Reinforcing plate; 40-Fixing pressure plate. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "located on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0036] See Figures 1 to 5 This invention provides a variable curvature adjustment device for a display, comprising:

[0037] Multiple curvature adjustment units are hinged in sequence. The curvature adjustment units are used to connect the flexible screen 1, which is a screen made of a material that is known to be able to bend between a plane and a curve.

[0038] The curvature adjustment unit includes a first axis 2, a second axis 3, a third axis 4, a fourth axis 5, and a first frame 6, a second frame 7, a third frame 8, and a fourth frame 9 that are hinged in sequence. The third frame 8 is rotatably connected to the first axis 2, the second frame 7 is fixedly connected to the first axis 2, both the second frame 7 and the third frame 8 are rotatably connected to the second axis 3, the second frame 7 is rotatably connected to the third axis 4, and the first frame 6 is fixedly connected to the third axis 4. The first frame 6 in one curvature adjustment unit is also hinged to the fourth frame 9 in another curvature adjustment unit or serves as the outermost frame of the variable curvature adjustment device. The fourth frame 9 in one curvature adjustment unit is also hinged to the first frame 6 in another curvature adjustment unit or serves as the outermost frame of the variable curvature adjustment device.

[0039] The curvature adjustment unit also includes a speed-increasing transmission mechanism connecting the second frame 7 and the third frame 8. The speed-increasing transmission mechanism is used to increase the rotational speed of the first shaft 2 and transmit it to the second shaft 3. The curvature adjustment unit also includes a constant-speed transmission mechanism connecting the first frame 6 and the second frame 7. The constant-speed transmission mechanism is used to transmit the rotational speed of the second shaft 3 to the third shaft 4 at a constant speed.

[0040] The variable curvature adjustment device for a display includes an electric mechanism connected to a curvature adjustment unit to drive the oscillation of the skeleton in the curvature adjustment unit.

[0041] In the variable curvature adjustment device for a display provided in this embodiment of the invention, multiple curvature adjustment units are sequentially hinged, and each curvature adjustment unit is provided with multiple frames (first frame 6, second frame 7, third frame 8, and fourth frame 9). These, along with a speed-increasing transmission mechanism and a constant-speed transmission mechanism, ensure that when the outermost frame or another frame is moved, the other frames are sequentially linked, thereby rapidly changing the curvature. This facilitates a better near-arc display effect when the flexible screen 1 is fixed to the multiple curved frames (see [link]). Figure 7 ).

[0042] According to a preferred embodiment of the present invention, the hinge axes of the first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 are arranged at equal intervals. This allows the first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 to be arranged at uniform distances, resulting in a more uniform change in angle during bending. It also helps the flexible screen 1 to better form an approximately arc-shaped display effect when fixed on multiple bent frames. Of course, even if the hinge axes of the first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 are not arranged at equal intervals, they will still fall within the protection scope of the present invention.

[0043] According to one embodiment of the present invention, the third frame 8 is rotatably connected to the fourth shaft 5, and the fourth frame 9 is fixedly connected to the fourth shaft 5. The predetermined curvature adjustment unit among the plurality of curvature adjustment units includes a constant-speed reverse transmission mechanism connecting the third frame 8 and the fourth frame 9. The constant-speed reverse transmission mechanism is used to transmit the rotational speed of the first shaft 2 to the fourth shaft 5 in a constant-speed reverse manner. Since when the flexible screen 1 is transformed from a plane to a curved surface, the middle part of the flexible screen 1 needs to be concave to form the effect of bending in the same direction on both sides. If the constant-speed reverse transmission mechanism is not designed, the frames on both sides need to be moved at the same time to achieve the desired bending effect of the flexible screen 1. Therefore, the constant-speed reverse action of the constant-speed reverse transmission mechanism is also equivalent to providing a symmetrical linkage mechanism. In this way, when the outermost frame of one end of the variable curvature adjustment device is moved to bend all the frames between that frame and the linkage mechanism, the outermost frame of the other end of the variable curvature adjustment device and all the frames between the linkage mechanism will also form the same bending.

[0044] According to a preferred embodiment of the present invention, the variable curvature adjustment device for a display includes an electric mechanism connected to a curvature adjustment unit to drive the frame in the curvature adjustment unit to swing. The electric mechanism may include a motor, an electric push rod, and known mechanical transmission components, etc. It only needs to generate a force to push or pull a certain frame to make it rotate, that is, the curvature change of the variable curvature adjustment device is adjusted by electronic control. However, the present invention does not exclude manual adjustment.

[0045] According to one embodiment of the present invention, the centrally located curvature adjustment unit of the plurality of curvature adjustment units includes a constant velocity reverse transmission mechanism. Since curved displays are usually concave arcs in the middle, the constant velocity reverse transmission mechanism is located in the centrally located curvature adjustment unit of the plurality of curvature adjustment units, especially on the central frame. However, it is not excluded that the constant velocity reverse transmission mechanism is located on the frame at other positions.

[0046] According to one embodiment of the present invention, the speed-increasing transmission mechanism includes a first connecting arm 10, a second connecting arm 11, a third connecting arm 12, a fourth connecting arm 13, and a fifth connecting arm 14 rotatably connected in sequence. The first connecting arm 10 is fixedly connected to a first shaft 2, the third connecting arm 12 is rotatably connected to a third frame 8, and the fifth connecting arm 14 is rotatably connected to a second shaft 3. The constant-speed transmission mechanism includes a sixth connecting arm 15, a seventh connecting arm 16, and an eighth connecting arm 17 rotatably connected in sequence. The sixth connecting arm 15 is fixedly connected to the second shaft 3, and the eighth connecting arm 17 is fixedly connected to the third shaft 4. The constant velocity reverse transmission mechanism includes a movable arm 18, a ninth connecting arm 19, a tenth connecting arm 20, and an eleventh connecting arm 21, a twelfth connecting arm 22, a thirteenth connecting arm 23, a fourteenth connecting arm 24, and a fifteenth connecting arm 25 that are rotatably connected in sequence. The middle part of the movable arm 18 is movable and rotatably connected to the third frame 8. The first end of the ninth connecting arm 19 is rotatably connected to the movable arm 18. The third connecting arm 12 and the fourth connecting arm 13 are rotatably connected to each other via a fifth shaft 26. The second end of the ninth connecting arm 19 is rotatably connected to the fifth shaft 26. The eleventh connecting arm 21 is fixedly connected to the fourth shaft 5, and the thirteenth connecting arm 23... The thirteenth connecting arm 23 and the fourteenth connecting arm 24 are rotatably connected to the third frame 8 via the sixth shaft 27. The first end of the tenth connecting arm 20 is rotatably connected to the movable arm 18, and the second end of the tenth connecting arm 20 is rotatably connected to the sixth shaft 27. The position where the movable arm 18 is connected to the tenth connecting arm 20 is closer to the third frame 8 than the position where the movable arm 18 is connected to the ninth connecting arm 19. The third frame 8 and the fourth frame 9 are also hinged via the seventh shaft 28. The fifteenth connecting arm 25 is rotatably connected to the seventh shaft 28. It can be understood that the constant speed reverse transmission mechanism only needs to be set on a curvature adjustment unit.

[0047] It should be noted that "sequentially rotatably connected" or "sequentially hinged" means that adjacent components in a series of listed parts are rotatably connected. For example, "sequentially rotatably connected" means that the first connecting arm 10, the second connecting arm 11, the third connecting arm 12, the fourth connecting arm 13, and the fifth connecting arm 14 are rotatably connected (hinged in sequence). This means that the first connecting arm 10 is rotatably connected to the second connecting arm 11, the second connecting arm 11 is rotatably connected to the third connecting arm 12, the third connecting arm 12 is rotatably connected to the fourth connecting arm 13, and the fourth connecting arm 13 is rotatably connected to the fifth connecting arm 14.

[0048] In this embodiment, during specific operation, when the third frame 8 is fixed to the display support 32 (see below), when the first frame 6 is manually or electrically moved, the rotational speed of the first frame 6 around the third axis 4 is twice the rotational speed of the second frame 7 around the first axis 2; the rotational speed of the fourth frame 9 around the fourth axis 5 is equal to the rotational speed of the second frame 7 around the first axis 2 but in the opposite direction. Therefore, the angle of the first frame 6 relative to the second frame 7 is equal to the angle of the second frame 7 relative to the third frame 8, and the angle of the fourth frame 9 relative to the third frame 8 is equal to the angle of the second frame 7 relative to the third frame 8. Similarly, when the outermost frame of the variable curvature adjustment mechanism is moved, the included angles between adjacent frames on the mechanism are all equal. When the flexible screen 1 is fixed on the curved frame, an approximately arc-shaped display effect is formed (see...). Figure 7 ).

[0049] According to a specific embodiment of the present invention, the variable curvature adjustment device for the display includes a movable arm support 29 fixedly connected to the third frame 8. The movable arm support 29 has an elongated hole 30 extending parallel to the length direction of the movable arm 18. The middle part of the movable arm 18 is movably and rotatably connected to the elongated hole 30 through an eighth axis 31. Specifically, the eighth axis 31 can completely penetrate or partially limit the elongated hole 30.

[0050] Although the above only describes specific embodiments of the speed-increasing transmission mechanism, the constant speed transmission mechanism, and the constant speed reverse transmission mechanism in the form of connecting arms, it is understood that each of the speed-increasing transmission mechanism, the constant speed transmission mechanism, and the constant speed reverse transmission mechanism includes at least one of the gear transmission mechanism, the sprocket transmission mechanism, and the pulley transmission mechanism. That is, similar transmission functions can also be achieved by using gear transmission mechanisms, sprocket transmission mechanisms, and pulley transmission mechanisms. Moreover, the use of connecting arms does not limit the number, layout, etc. of the connecting arms to the situations listed in the specific embodiments of this application.

[0051] In addition, the present invention also provides a display, including a support 32, a flexible screen 1, and the aforementioned variable curvature adjustment device for the display, wherein the back side of the flexible screen 1 is connected to the support 32 via the variable curvature adjustment device for the display.

[0052] See Figures 3 to 6 According to one embodiment of the present invention, the display further includes a movable adjustment mechanism. The variable curvature adjustment device for the display is connected to the support 32 via the movable adjustment mechanism. The movable adjustment mechanism is capable of adjusting the lateral swing, vertical swing, and lifting motion of the variable curvature adjustment device for the display relative to the support 32. Specifically, lateral swing can be achieved via a vertical movable joint 33, vertical swing via a horizontal movable joint 34, and lifting motion via a lifting rail on the support 32, etc.

[0053] In other embodiments, the vertical movable joint 33 and the horizontal movable joint 34 can also be replaced by a universal joint, and the lifting rail can be replaced by a lifting cylinder or other structures.

[0054] Furthermore, a back plate 35 is provided on the back of the flexible screen 1. The back plate 35 possesses at least the same full deformability as the flexible screen 1. The back plate 35 is detachably connected to the curvature adjustment unit via a fixing plate 40 and threaded fasteners (e.g., screws 36), specifically connected to a frame, such as the third frame 8. As a specific embodiment, the back plate 35 has an elliptical mounting hole for the threaded fastener to pass through, facilitating the displacement of the back plate 35 relative to the frame during curvature changes.

[0055] In addition, an elastic buffer 37, such as a plastic pad, is provided between the back plate 35 and the curvature adjustment unit to reduce the friction between the back plate 35 and the curvature adjustment unit and to prevent scratching noises from the components.

[0056] According to one embodiment of the present invention, the support 32 can be connected to the curvature adjustment unit by means of threaded fasteners and a snap plate 38, but other connection methods are not excluded, such as plug-in or snap-fit. In order to improve the connection stability between the curvature adjustment unit and the back plate 35, a reinforcing plate 39 can also be added to fasten the back plate 35 and the frame in the curvature adjustment unit.

[0057] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A variable curvature adjustment device for a display, characterized in that, include: Multiple curvature adjustment units are hinged sequentially, and the curvature adjustment units are used to connect to a flexible screen; The curvature adjustment unit includes a first axis, a second axis, a third axis, a fourth axis, and a first frame, a second frame, a third frame, and a fourth frame that are hinged in sequence. The third frame is rotatably connected to the first axis, the second frame is fixedly connected to the first axis, both the second and third frames are rotatably connected to the second axis, the second frame is rotatably connected to the third axis, and the first frame is fixedly connected to the third axis. The curvature adjustment unit further includes a speed-increasing transmission mechanism connecting the second frame and the third frame. The speed-increasing transmission mechanism is used to increase the rotational speed of the first shaft and transmit it to the second shaft. The curvature adjustment unit also includes a constant-speed transmission mechanism connecting the first frame and the second frame. The constant-speed transmission mechanism is used to transmit the rotational speed of the second shaft to the third shaft at a constant speed. The third frame is rotatably connected to the fourth axis, and the fourth frame is fixedly connected to the fourth axis. The speed-increasing transmission mechanism includes a first connecting arm, a second connecting arm, a third connecting arm, a fourth connecting arm, and a fifth connecting arm that are rotatably connected in sequence. The first connecting arm is fixedly connected to the first shaft, the third connecting arm is rotatably connected to the third frame, and the fifth connecting arm is rotatably connected to the second shaft. The constant velocity transmission mechanism includes a sixth connecting arm, a seventh connecting arm, and an eighth connecting arm that are rotatably connected in sequence. The sixth connecting arm is fixedly connected to the second shaft, and the eighth connecting arm is fixedly connected to the third shaft.

2. The variable curvature adjustment device for a display according to claim 1, characterized in that, The hinge axes of the first frame, second frame, third frame and fourth frame are arranged at equal intervals.

3. The variable curvature adjustment device for a display according to claim 1, characterized in that, The predetermined curvature adjustment unit among the plurality of curvature adjustment units includes a constant velocity reverse transmission mechanism connecting the third frame and the fourth frame. The constant velocity reverse transmission mechanism is used to transmit the rotational speed of the first shaft to the fourth shaft at a constant velocity in reverse.

4. The variable curvature adjustment device for a display according to claim 3, characterized in that, The centrally located curvature adjustment unit among the plurality of curvature adjustment units includes the constant velocity reverse transmission mechanism.

5. The variable curvature adjustment device for a display according to claim 1, characterized in that, The constant velocity reverse transmission mechanism includes a movable arm, a ninth connecting arm, a tenth connecting arm, and an eleventh, twelfth, thirteenth, fourteenth, and fifteenth connecting arms that are rotatably connected in sequence. The middle part of the movable arm is movable and rotatably connected to the third frame. The first end of the ninth connecting arm is rotatably connected to the movable arm. The third and fourth connecting arms are rotatably connected to each other via a fifth axis. The second end of the ninth connecting arm is rotatably connected to the fifth axis. The eleventh connecting arm is fixedly connected to the fourth axis. The thirteenth connecting arm is rotatably connected to the third frame. The thirteenth and fourteenth connecting arms are rotatably connected to each other via a sixth axis. The first end of the tenth connecting arm is rotatably connected to the movable arm. The second end of the tenth connecting arm is rotatably connected to the sixth axis. The position where the movable arm connects to the tenth connecting arm is closer to the third frame than the position where the movable arm connects to the ninth connecting arm. The third and fourth frames are hinged via a seventh axis. The fifteenth connecting arm is rotatably connected to the seventh axis.

6. The variable curvature adjustment device for a display according to claim 5, characterized in that, The variable curvature adjustment device for the display includes a movable arm bracket fixedly connected to the third frame. The movable arm bracket has an elongated hole extending parallel to the length direction of the movable arm. The middle part of the movable arm is movably and rotatably connected to the elongated hole via an eighth axis.

7. A display comprising a support and a flexible screen, characterized in that, The display also includes a variable curvature adjustment device for the display according to any one of claims 1 to 6, wherein the back side of the flexible screen is connected to the support via the variable curvature adjustment device for the display.

8. The display according to claim 7, characterized in that, The display also includes a movable adjustment mechanism, and the variable curvature adjustment device for the display is connected to the support through the movable adjustment mechanism. The movable adjustment mechanism is capable of adjusting the lateral swing, vertical swing, and lifting motion of the variable curvature adjustment device for the display relative to the support.

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