Sliding roll mechanism, sliding roll display device and control method thereof

Abstract

The present application relates to a sliding mechanism, a sliding display device and a control method thereof. The sliding mechanism is used for a flexible screen, and the sliding mechanism includes: a main frame; and a sliding scroll assembly, and the sliding scroll assembly includes: a central axis, which is configured to be able to move closer to or farther from the main frame along a first direction; and a plurality of support bodies, which are arranged on the central axis at intervals from each other along the circumferential direction around the axis of the central axis, and the support bodies can support the flexible screen, and one end of the flexible screen is connected to the main frame so that the central axis can be rolled up or unfolded when reciprocating along the first direction; among the support bodies located in the first area and the second area, at least part of the first support body is configured to be able to retract, and at least part of the first support body is configured to be able to extend when the flexible screen is unfolded, so as to reduce the curvature of the bending area of ​​the flexible screen. The sliding mechanism, the sliding display device and the control method thereof of the present application can improve the stress condition of the flexible screen and improve the flatness of the flexible screen.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a sliding mechanism, a sliding display device and a control method thereof. Background Art

[0002] Compared with traditional display screens, flexible screens have significant advantages such as bendability, flexibility, and light weight. They are a type of display screen that is currently receiving widespread attention in the industry. As a new form of flexible screen, the sliding roll form can significantly reduce the volume of the terminal product while expanding the display area of ​​the screen. In the current sliding roll display device, the flexible screen is usually rolled up on a reel, and the unfolded area of ​​the flexible screen is changed by stretching and rolling. At the same time, in order to reduce the volume of the terminal product, it is considered to set the reel radius to be smaller to reduce the space occupied by the reel and the flexible screen. However, the flatness of the flexible screen in the related art is poor. Summary of the invention

[0003] Based on this, it is necessary to provide a sliding mechanism, a sliding display device and a control method thereof to improve the force of the flexible screen and improve the flatness of the flexible screen.

[0004] According to one aspect of the present application, a sliding and rolling mechanism is provided for a flexible screen, and the sliding and rolling mechanism includes:

[0005] Main frame; and

[0006] The sliding reel assembly comprises:

[0007] a central axis configured to be able to move toward or away from the main frame along a first direction; and

[0008] A plurality of support bodies are arranged on the central axis at intervals along the circumferential direction around the axis of the central axis, the support bodies are capable of supporting the flexible screen body, and one end of the flexible screen body is connected to the main frame so that the flexible screen body can be rolled up or unfolded when the central axis reciprocates along the first direction;

[0009] The plane parallel to the first direction is the first plane, the plane perpendicular to the first direction and orthogonal to the first plane is the second plane, the intersection of the first plane and the second plane coincides with the axis of the central axis; the two regions located on the side of the second plane away from the main frame and between the first plane and the second plane are the first region and the second region respectively;

[0010] At least part of the support bodies located in the first area and the second area are configured as retractable first support bodies, and at least part of the first support bodies are configured to be able to stretch when the flexible screen body is unfolded to reduce the curvature of the bending area of ​​the flexible screen body.

[0011] In the above-mentioned sliding and rolling mechanism, the central axis of the sliding and rolling shaft assembly is configured to be able to move closer to or farther away from the main frame along a first direction, and the support body can support the flexible screen body, and one end of the flexible screen body is connected to the main frame, so that when the central axis moves closer to the main frame along the first direction, the flexible screen body can be rolled up, and when the central axis moves away from the main frame along the first direction, the flexible screen body can be unfolded.

[0012] On the other hand, when the support body supports the flexible screen body, some screen segments on the flexible screen body corresponding to the first area and the second area are bent areas. In the above scheme, since at least part of the support body located in the first area and the second area is configured as a retractable first support body, at least part of the first support body is configured to be able to stretch when the flexible screen body is unfolded, the bending area is partially lifted in a direction away from the central axis, so that the curvature of the curved surface in the bending area becomes smaller, thereby improving the stress condition of the area of ​​the flexible screen body corresponding to the sliding scroll assembly, thereby improving the problem of warping deformation and improving the flatness of the flexible screen body.

[0013] In some embodiments, the angle α between the extension direction of the first support body and the first plane satisfies the condition: 5°<α<75°; when the angle α between the extension direction of the first support body and the first plane is greater than 5° and less than 75°, the curvature reduction effect of the bending area of ​​the flexible screen is better.

[0014] Preferably, a first support body is provided in each of the first region and the second region, and the angle α between the extension and contraction directions of the two first support bodies and the first plane is 45°. By providing two first support bodies in this way, the jacking positions on the bending regions of the two first support bodies are symmetrical relative to the first plane, which has a better effect on improving the curvature of the curved surface of the bending region of the flexible screen body.

[0015] In some embodiments, the plurality of support bodies further include a second support body whose extension direction is parallel to the second plane and faces the front side of the flexible screen body in the unfolded state;

[0016] The second support body is configured to be retractable and retracts when the flexible screen body is in the unfolded state.

[0017] Since the second support body corresponds to the warped position of the flexible screen body, configuring the second support body to be retracted in the unfolded state can reduce the height of the warped position of the flexible screen body to a certain extent to improve the warping condition at this position.

[0018] In some embodiments, the plurality of supports further include a third support, the third support is configured to have a non-adjustable length, and at least a portion of the third support is located on a side of the second plane away from the main frame.

[0019] With such arrangement, when the flexible screen is unfolded, at least part of the first support body is extended, and at least part of the third support body remains unchanged in length, thereby achieving the effect of reducing the curvature of the flexible screen corresponding to the first area and the second area, thereby improving the stress and warping conditions of the flexible screen.

[0020] In some embodiments, the third support comprises:

[0021] at least two second carriers connected to the central axis; and

[0022] The third carrier is rotatably arranged around a rotation axis on a side of at least two second carriers away from the central axis and is used to support the flexible screen, wherein the rotation axis of the third carrier is parallel to the axis of the central axis.

[0023] In this way, when the central axis drives the flexible screen to roll up or unfold, the third carrier can rotate driven by the flexible screen, thereby effectively reducing the friction between the flexible screen and the third carrier.

[0024] In some embodiments, the first support and the second support both include:

[0025] at least two telescopic rods connected to the central axis;

[0026] A driving assembly is disposed on the central axis and is configured to drive each telescopic rod to extend and retract synchronously;

[0027] A first carrier is rotatably disposed around a rotation axis at one end of at least two telescopic rods away from the central axis and is used to support the flexible screen body;

[0028] Wherein, the rotation axis of the first carrier is parallel to the axis of the central axis.

[0029] With the above arrangement, the same driving assembly can be used to drive all telescopic rods corresponding to one supporting body to telescope synchronously.

[0030] In some embodiments, the drive assembly includes:

[0031] A first transmission member is rotatably connected to the central shaft about a rotation axis;

[0032] At least two second transmission members are meshed with the first transmission member, and the end of each telescopic rod away from the central axis is connected to a second transmission member. The second transmission member is configured to be able to move along the axis of the telescopic rod when the first transmission member rotates, so as to drive the telescopic rods connected to the second transmission members to synchronously extend and retract; in this way, when the first transmission member rotates, all the second transmission members meshed with it are driven to move along the axis direction of the telescopic rod, thereby driving the corresponding telescopic rods to be synchronously extended and retracted.

[0033] Preferably, the first transmission member is configured as a gear shaft, and the second transmission member is configured as a rack.

[0034] According to another aspect of the present application, there is provided a sliding display device, comprising a flexible screen and the aforementioned sliding mechanism;

[0035] Wherein, the flexible screen body is wound on a plurality of support bodies of the sliding scroll assembly, and one end is connected to the main frame;

[0036] Preferably, the sliding and rolling mechanism further comprises a frame, and the frame is used to support the central axis;

[0037] A first matching portion is provided on the frame, and a second matching portion is provided on the main frame. The first matching portion and the second matching portion are matched along a first direction so that the frame is slidably connected to the main frame along the first direction.

[0038] In some embodiments, the scrolling display device further includes a controller, and the controller is configured to control at least a portion of the first support body to extend when the flexible screen body is unfolded.

[0039] In this way, the bending area of ​​the flexible screen can be partially lifted in the direction away from the central axis, so that the curvature of the curved surface of the bending area becomes smaller, the stress condition of the area of ​​the flexible screen corresponding to the sliding scroll assembly is improved, the problem of warping deformation is improved, and the flatness of the flexible screen is improved.

[0040] According to another aspect of the present application, a control method for a scrolling display device is provided, wherein the scrolling display device is the scrolling display device described above; the control method for the scrolling display device comprises:

[0041] Determine whether to unfold the flexible screen; if so, control at least a portion of the first support to extend to reduce the curvature of the bending area of ​​the flexible screen.

[0042] In the above scheme, when it is determined that the flexible screen needs to be unfolded, at least a portion of the first support body is controlled to extend so as to reduce the curvature of the bending area of ​​the flexible screen. In fact, the bending area of ​​the flexible screen can be partially lifted in the direction away from the center axis, so that the surface curvature of the bending area becomes smaller, thereby improving the stress condition of the area of ​​the flexible screen corresponding to the sliding scroll assembly, thereby improving the problem of warping and deformation, and improving the flatness of the flexible screen.

[0043] Preferably, the control method of the scroll display device further includes:

[0044] Determine whether the flexible screen is in a fully unfolded final state;

[0045] If so, the second support body is controlled to retract.

[0046] Preferably, the control method of the scroll display device further includes:

[0047] When it is determined that the flexible screen needs to be rolled up, detecting whether each of the first support body and the second support body is in an initial state where no length change occurs;

[0048] If not, the first support body and the second support body which are not in the initial state are controlled to extend or contract to the initial state.

[0049] This can minimize the space occupied by the sliding reel assembly during the reeling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the structure of a sliding and rolling mechanism provided in one embodiment of the present application;

[0051] Figure 2 A schematic diagram of the three-dimensional structure of a sliding reel assembly in a sliding reel mechanism provided in an embodiment of the present application;

[0052] Figure 3 A front view of a sliding reel assembly in a sliding reel mechanism provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the structure of a driving component in a sliding and rolling mechanism provided in an embodiment of the present application;

[0054] Figure 5 A schematic diagram of the structure of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application;

[0055] Figure 6 A schematic cross-sectional view of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application;

[0056] Figure 7 A schematic diagram of another structure of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application;

[0057] Figure 8 A schematic flow chart of a method for controlling a scrolling display device provided in an embodiment of the present application.

[0058] Description of Figure Numbers:

[0059] 100, sliding mechanism; F, first direction; Z1, first plane; Z2, second plane; O, axis of the central axis; Q, front side of the flexible screen; R, back side of the flexible screen; SS, telescopic direction of the first support;

[0060] 10. Main frame; 101. Second matching part; 11. Frame; 111. First matching part; 20. Sliding scroll assembly; 21. Central axis; 30. Support body; 301. First support body; 302. Second support body; 303. Third support body; 3021. Second carrier; 3022. Third carrier; 310. First carrier; 320. Telescopic rod; 321. Telescopic arm; 3211. Accommodating cavity; 3212. Guide part; 3213. Guide rail; 321', first telescopic arm; 330. Drive assembly; 331. First transmission member; 332. Second transmission member; 40. Flexible screen; 41. First end; 42. Second end; 50. Pulling assembly. DETAILED DESCRIPTION

[0061] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0063] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there can be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly below or there can be one or more light-emitting units. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there can be one or more light-emitting units.

[0064] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0065] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0066] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0067] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0068] With the development of science and technology, flexible display screens have gradually entered the field of vision of consumers, and the rollability of the screen has greatly expanded its application in the display field. Compared with traditional screens, flexible display screens have obvious advantages. Not only are they thinner and lighter in size, but their power consumption is also lower than traditional devices, which helps to improve the battery life of the device. At the same time, based on the characteristics of bendability and good flexibility, when used in display devices, a sliding and rolling method can generally be adopted. The area of ​​the display area can be adjusted, and it can be rolled up when not in use, which is convenient for storage and saves space. In the current sliding display device, the flexible screen body is usually rolled up on a reel, and the display area of ​​the flexible screen body is changed by stretching and rolling.

[0069] After long-term research, the inventor of this application found that a smaller reel radius can effectively reduce the space occupied by the reel, and thus reduce the space occupied by the flexible screen. However, during the rolling process of the flexible screen, a smaller reel radius easily causes the flexible screen to be subjected to excessive force, especially when the flexible screen is stretched outward, the flexible screen is more likely to bend and deform in the reel area, thereby increasing the risk of failure of the flexible screen. At the same time, it will also cause the flatness of the local position of the surface of the flexible screen to bulge, affecting the display effect of the flexible screen, resulting in poor viewing experience for users.

[0070] In response to the above problems, the embodiments of the present application propose a sliding mechanism, a sliding display device and a control method thereof, so that the curvature of at least part of the bending area of ​​the flexible screen can be adjusted, so as to improve the problems of local warping of the flexible screen and excessive force on the flexible screen during the sliding process.

[0071] The following describes the sliding mechanism, the sliding display device and the control method thereof according to the embodiments of the present application in conjunction with the accompanying drawings.

[0072] Figure 1 This is a structural diagram of a sliding and rolling mechanism provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the three-dimensional structure of a sliding reel assembly in a sliding reel mechanism provided in an embodiment of the present application. Figure 3 A front view of a sliding reel assembly in a sliding reel mechanism provided in one embodiment of the present application.

[0073] In the embodiment of the present application, for ease of explanation, the direction in which the central axis 21 approaches or moves away from the main frame 10 is defined as a first direction F. Here, the first direction F is also the unfolding direction of the flexible screen body 40 relative to the main frame 10 .

[0074] In addition, the plane parallel to the first direction F is the first plane Z1, the plane perpendicular to the first direction F and orthogonal to the first plane Z1 is the second plane Z2, the intersection of the first plane Z1 and the second plane Z2 coincides with the axis O of the central axis 21; the two areas located on the side of the second plane Z2 away from the main frame 10 and between the first plane Z1 and the second plane Z2 are the first area and the second area respectively. It should be noted that the first area and the second area here do not include the first plane Z1 and the second plane Z2 themselves, but only refer to the space enclosed by the first plane Z1 and the second plane Z2.

[0075] When the flexible screen 40 is wound on the sliding reel assembly 20, the area where the flexible screen 40 is bent can be defined as the bending area of ​​the flexible screen 40. In addition, the letter "Q" represents the front side of the flexible screen 40 in the unfolded state, which is also referred to as the front side Q of the flexible screen 40 hereinafter, and the letter "R" represents the back side of the flexible screen 40 in the unfolded state, which is also referred to as the back side R of the flexible screen 40 hereinafter.

[0076] Reference Figure 1 , Figure 2 , Figure 3 The sliding and rolling mechanism 100 provided in this embodiment is used for a flexible screen body 40. The sliding and rolling mechanism 100 includes a main frame 10 and a sliding and rolling shaft assembly 20. The sliding and rolling shaft assembly 20 includes a central axis 21 and a plurality of support bodies 30. The central axis 21 is configured to be able to move closer to or farther away from the main frame 10 along a first direction F. A plurality of support bodies 30 are arranged on the central axis 21 circumferentially spaced from each other around the axis of the central axis 21, and the support bodies 30 are capable of supporting the flexible screen body 40, and one end of the flexible screen body 40 is connected to the main frame 10 so that the flexible screen body 40 can be rolled up or unfolded when the central axis 21 reciprocates along the first direction F. Among the support bodies 30 located in the first area and the second area, at least a portion of the first support body 301 is configured to be retractable, and at least a portion of the first support body 301 is configured to be able to extend when the flexible screen body 40 is unfolded.

[0077] In the above-mentioned sliding and rolling mechanism 100, the central axis 21 of the sliding and rolling shaft assembly 20 is configured to be able to move closer to or farther away from the main frame 10 along the first direction F, and the support body 30 can support the flexible screen body 40, and one end of the flexible screen body 40 is connected to the main frame 10, so that when the central axis 21 moves closer to the main frame 10 along the first direction F, the flexible screen body 40 can be rolled up, and when the central axis 21 moves away from the main frame 10 along the first direction F, the flexible screen body 40 can be unfolded.

[0078] On the other hand, when the support body 30 supports the flexible screen body 40, the bending area includes a portion of the screen body segment corresponding to the first area and the second area on the flexible screen body 40. In the above scheme, since at least part of the support body 30 located in the first area and the second area is configured as a retractable first support body 301, at least part of the first support body 301 is configured to be able to stretch when the flexible screen body 40 is unfolded, so as to reduce the curvature of the bending area of ​​the flexible screen body 40. In other words, the bending area is partially lifted in the direction away from the central axis 21 so that the curvature of the curved surface of the bending area becomes smaller, and the stress condition of the area of ​​the flexible screen body 40 corresponding to the sliding scroll assembly 20 is improved to improve the problem of warping deformation and improve the flatness of the flexible screen body 40.

[0079] The plurality of supports 30 are arranged on the central axis 21 at intervals along the circumferential direction around the axis O of the central axis 21. For example, one end of each support 30 is connected to the central axis 21, and the other end extends away from the central axis 21. The supports 30 may be evenly distributed in the circumferential direction of the central axis 21.

[0080] In the present application, a plurality of support bodies 30 are evenly distributed in the circumferential direction of the central axis 21 as an example for explanation. Of course, the present application is not limited thereto. A structure in which the support bodies 30 are not provided in two areas located on the side of the second plane Z2 facing the main frame 10 and between the first plane Z1 and the second plane Z2 is also possible. Figure 3 For example, Figure 3 The three support bodies 30 located on the right side of the second plane Z2 in the figure are removed.

[0081] The support body 30 can support the flexible screen body 40, for example, the flexible screen body 40 is arranged on the side of the support body 30 away from the central axis 21. Specifically, the ends of the multiple support bodies 30 away from the central axis 21 jointly support the flexible screen body 40 at different positions around the central axis 21. Since one end of the flexible screen body 40 is also connected to the main frame 10, when the central axis 21 moves closer to the main frame 10 along the first direction F, the flexible screen body 40 can be rolled up, and when the central axis 21 moves away from the main frame 10 along the first direction F, the flexible screen body 40 can be unfolded.

[0082] Preferably, the sliding mechanism 100 further includes a frame 11, the frame 11 is used to support the central axis 21, a first matching portion 111 is provided on the frame 11, and a second matching portion 101 is provided on the main frame 10, and the first matching portion 111 and the second matching portion 101 are guided and matched along a first direction F, so that the frame 11 can be slidably connected to the main frame 10 along the first direction F. In this way, the frame 11 and the main frame 10 can be guided and matched along the first direction F through the first matching portion 111 and the second matching portion 101, and when the frame 11 is subjected to an external force, for example, when the flexible screen 40 is rolled up under the operation of a user, the sliding operation can be made more stable.

[0083] In the embodiment of the present application, the sliding and rolling mechanism 100 also includes a pulling assembly 50 arranged on the main frame 10; one end of the flexible screen body 40 connected to the main frame 10 is defined as a first end 41, and the flexible screen body 40 also includes a second end 42 away from the first end 41. The pulling assembly 50 is configured to be connected to the second end 42 to provide a pulling force to tension the flexible screen body 40.

[0084] In other words, the pulling assembly 50 provides a pulling force to the second end 42 of the flexible screen body 40, so that the rolled-up portion of the flexible screen body 40 is always in a straight state. Under the action of the pulling force, the flexible screen body 40 can maintain a flat state whether it is converted from a rolled-up state to an unfolded state or from an unfolded state to a rolled-up state, thereby preventing the flexible screen body 40 from wrinkling.

[0085] Reference Figure 3 , the support body 30 located on the side of the second plane Z2 away from the main frame 10 and overlapping with the first plane Z1, and the support body 30 located on the back side R of the flexible screen body 40 in the unfolded state and overlapping with the second plane Z2 are both set as the third support body 303, and the third support body 303 is configured to be non-adjustable in length. The present application includes but is not limited to such a setting, and the setting position and setting number of the third support body 303 can also be set to other as needed, as long as at least part of the third support body 303 is located on the side of the second plane Z2 away from the main frame 10, and can cooperate with the first support body 301 to support the flexible screen body 40.

[0086] In the embodiment of the present application, among the supports 30 located in the first area and the second area, at least a portion is configured as a retractable first support body 301, and among the supports 30 located on the side of the second plane Z2 away from the main frame 10, at least a portion of the support body 30 is configured as a third support body 303 with a non-adjustable length. In this way, when the flexible screen body 40 is unfolded, at least a portion of the first support body 301 is extended, and at least a portion of the third support body 303 remains unchanged in length, thereby achieving the effect of reducing the curvature of the flexible screen body 40 corresponding to the first area and the second area, thereby improving the stress and warping conditions of the flexible screen body 40.

[0087] In the present application, continue to refer to Figure 3 , the angle α between the expansion direction SS of the first support body 301 and the first plane Z1 can meet the condition: 5°<α<75°. When the angle α between the expansion direction SS of the first support body 301 and the first plane Z1 is greater than 5° and less than 75°, the curvature reduction effect of the bending area of ​​the flexible screen body 40 is better.

[0088] Preferably, a first support body 301 is provided in each of the first region and the second region, and the angle α between the extension direction SS of the two first support bodies 301 and the first plane Z1 is 45°. By providing two first support bodies 301 in this way, the jacking positions of the two first support bodies 301 in the bending region are symmetrical relative to the first plane Z1, which has a better effect on improving the curvature of the curved surface of the bending region of the flexible screen body 40.

[0089] In some embodiments, the plurality of supports 30 further include a second support 302 whose extension direction is parallel to the second plane Z2 and faces the front side Q of the flexible screen 40 in the unfolded state. The second support 302 is configured to be retractable and retracted when the flexible screen 40 is in the unfolded state. Since the second support 302 corresponds to the warped position of the flexible screen 40, configuring the second support 302 to retract in the unfolded state can reduce the height of the warped position of the flexible screen 40 to a certain extent to improve the warping at this position. In addition, it should be noted that the second support 302 is configured to retract when the flexible screen 40 is in the unfolded state, which means that the second support 302 can be retracted when the flexible screen 40 is unfolded, or when the flexible screen 40 is in the process of unfolding, or when the flexible screen 40 is just beginning to unfold.

[0090] It should be noted that the length of the second support 302 in the retracted state is smaller than the length of the normal non-adjustable third support 303. The length of the first support 301 in the extended state is longer than the length of the normal non-adjustable third support 303. And the lengths of the first support 301 and the second support 302 in the initial state are the same as the length of the third support 303.

[0091] As mentioned above, at least part of the third support body 303 is located on the side of the second plane Z2 away from the main frame 10. In this way, during the unfolding of the flexible screen body 40, the length of the third support body 303 is not adjustable, and the effect of improving the warping of the flexible screen body 40 can be achieved by combining the extension of the first support body 301 and the retraction of the second support body 302.

[0092] Figure 4 This is a schematic diagram of the structure of a driving component in a sliding mechanism provided in an embodiment of the present application. Figure 5 This is a schematic diagram of the structure of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application. Figure 6 This is a schematic cross-sectional view of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application. Figure 7 A schematic diagram of another structure of a telescopic rod in a sliding and rolling mechanism provided in an embodiment of the present application.

[0093] Combine the following Figure 3 , Figure 4 , describing the specific structures of the first support body 301, the second support body 302, and the third support body 303.

[0094] Exemplary, combined Figure 2 , Figure 4 The first support body 301 and the second support body 302 both include a driving assembly 330, a first carrier body 310, and at least two telescopic rods 320. It should be noted that the two telescopic rods 320 included in the same first support body 301 or the second support body 302 are structures that are synchronously telescopic and have the same length, so as to ensure that the first carrier body 310 is always parallel to the axis O of the central axis 21.

[0095] Among them, at least two telescopic rods 320 are connected to the central axis 21, specifically, one telescopic rod 320 is connected to one end of the central axis 21, and the other telescopic rod 320 is located at the other end of the central axis 21. The driving assembly 330 is arranged on the central axis 21, and is configured to be able to drive each telescopic rod 320 to extend and retract synchronously. The first carrier 310 is arranged to rotate around a rotation axis at one end of all telescopic rods 320 away from the central axis 21, and is used to support the flexible screen body 40, wherein the rotation axis of the first carrier 310 is parallel to the axis O of the central axis 21. As set up as above, the same driving assembly 330 can be used to drive all telescopic rods 320 corresponding to a support body 30 to extend and retract synchronously. Specifically, the extension and retraction of the two telescopic rods 320 are carried out synchronously, so that the first carrier 310 can always remain parallel to the central axis 21.

[0096] Further, the driving assembly 330 includes a first transmission member 331 and at least two second transmission members 332. The first transmission member 331 is rotatably connected to the central axis 21 around a rotation axis. At least two second transmission members 332 are meshed with the first transmission member 331, and the end of each telescopic rod 320 away from the central axis 21 is connected to a second transmission member 332, and the second transmission member 332 is configured to be able to move along the axis of the telescopic rod 320 when the first transmission member 331 rotates, so as to drive the telescopic rods 320 connected to each second transmission member 332 to synchronously extend and retract. In this way, when the first transmission member 331 rotates, it drives all the second transmission members 332 meshed with it to move along the axis direction of the telescopic rod 320, and also drives the corresponding telescopic rods 320 to produce synchronous extension and retraction.

[0097] Preferably, the first transmission member 331 is configured as a gear shaft, and the second transmission member 332 is configured as a rack.

[0098] For the specific structure of the telescopic rod 320, Figure 4 and Figure 5 The telescopic rod 320 includes at least two telescopic arms 321 that are slidably connected in sequence. Among the telescopic arms 321, the telescopic arms 321 located at two ends of the telescopic rod 320 are respectively connected to the central shaft 21 and the second transmission member 332.

[0099] For example, refer to Figure 6 Each telescopic arm 321 has a receiving cavity 3211 therein, and the receiving cavities 3211 of each telescopic arm 321 are connected to each other. Along the length direction of the telescopic rod 320, each telescopic arm 321 is sleeved together in sequence. The cross-sectional shape of each telescopic arm 321 can be as follows: Figure 6 The circular ring shown can also be in other shapes. Figure 7 In another possible implementation of the telescopic rod 320, the telescopic rod 320 may include a plurality of first telescopic arms 321' connected in sequence. In addition to having a square cross section, the first telescopic arms 321' have the same connection method and internal structure as the first telescopic arms 321'. Figure 6 The telescopic arm 321 shown is similar and will not be described again here.

[0100] In addition, in order to facilitate the relative sliding of the telescopic arms 321, it is possible to consider providing guides for the telescopic arms 321. Figure 6 Exemplarily, in every two adjacent telescopic arms 321, the outer wall of the telescopic arm 321 with a smaller diameter is convexly provided with a plurality of, for example, four, guide portions 3212, while on the wall of the accommodating cavity 3211 of the telescopic arm 321 with a larger diameter, an equal number of guide rails 3213 are recessed corresponding to the positions of the guide portions 3212, and each guide portion 3212 and each guide rail 3213 are matched one by one, so that the guides of the two adjacent telescopic arms 321 are matched.

[0101] As for the specific structure of the third support body 303, in some embodiments, the third support body 303 includes at least two second carriers 3021 and a third carrier 3022, wherein at least two second carriers 3021 are connected to the central axis 21. Specifically, one second carrier 3021 may be connected to one end of the central axis 21, and another second carrier 3021 may be connected to the other end of the central axis 21; the third carrier 3022 is rotatably arranged around a rotation axis on the side of at least two second carriers 3021 away from the central axis 21, and is used to support the flexible screen 40, wherein the rotation axis of the third carrier 3022 is parallel to the axis O of the central axis 21. In this way, in the process of the central axis 21 driving the flexible screen 40 to roll up or unfold, the third carrier 3022 can rotate under the drive of the flexible screen 40, effectively reducing the friction between the flexible screen 40 and the third carrier 3022.

[0102] Reference Figure 3 , Figure 4 In order to better support the flexible screen body 40 , the first carrier 310 and the second carrier 3021 may be located on the same circumferential surface centered on the axis O of the central axis 21 .

[0103] On the other hand, the embodiment of the present application also proposes a scrolling display device, which can be any product or component with a display function, such as a display, a television, a digital camera, a mobile phone, a tablet computer, a navigator, etc. The scrolling display device includes the scrolling mechanism 100 in any of the above embodiments. The flexible screen body 40 is wound around a plurality of support bodies 30 of the scroll assembly 20, and one end is connected to the main frame 10.

[0104] The sliding and rolling mechanism 100 in this embodiment has been described in detail in the above embodiments, and can bring the same or similar technical effects, which will not be described in detail here.

[0105] In some embodiments, the scrolling display device further includes a controller, which is configured to control at least part of the first support body 301 to extend when the flexible screen body 40 is unfolded. In this way, the bending area of ​​the flexible screen body 40 can be partially lifted in a direction away from the central axis 21, so that the curvature of the curved surface of the bending area becomes smaller, and the stress condition of the area of ​​the flexible screen body 40 corresponding to the scroll assembly 20 is improved to improve the problem of warping deformation and improve the flatness of the flexible screen body 40.

[0106] Preferably, the controller is also used to control the second support body 302 to retract when the flexible screen body 40 is in the fully unfolded final state. Since the second support body 302 corresponds to the warped position of the flexible screen body 40, the second support body 302 is configured to retract in the unfolded state, which can reduce the height of the warped position of the flexible screen body 40 to a certain extent, so as to improve the warping condition at this position.

[0107] Preferably, the controller is also used to control the first support 301 and the second support 302 to extend or contract to an initial state when the flexible screen 40 is rolled up, so as to minimize the space occupied by the sliding scroll assembly 20 during the rolling process.

[0108] Figure 8 A schematic flow chart of a method for controlling a scrolling display device provided in an embodiment of the present application.

[0109] Reference Figure 8 On the other hand, the embodiments of the present application further provide a control method for a scrolling display device, which can be used to control the scrolling display device in the aforementioned embodiments.

[0110] The control method of the scroll display device includes:

[0111] S10, determining whether to unfold the flexible screen;

[0112] S20: If yes, control at least a portion of the first support body to extend to reduce the curvature of the bending area of ​​the flexible screen body.

[0113] In the above scheme, when it is determined that the flexible screen body 40 needs to be unfolded, at least a portion of the first support body 301 is controlled to extend so as to reduce the curvature of the bending area of ​​the flexible screen body 40. In fact, the bending area of ​​the flexible screen body 40 can be partially lifted in the direction away from the central axis 21, so that the surface curvature of the bending area becomes smaller, thereby improving the stress condition of the area of ​​the flexible screen body 40 corresponding to the sliding scroll assembly 20, thereby improving the problem of warping deformation and improving the flatness of the flexible screen body 40.

[0114] In the embodiment of the present application, the control method of the scroll display device further includes:

[0115] It is determined whether the flexible screen body 40 is in the fully unfolded final state. If so, the second support body 302 is controlled to retract. Since the second support body 302 corresponds to the warped position of the flexible screen body 40, the second support body 302 is configured to retract in the unfolded state, which can reduce the height of the warped position of the flexible screen body 40 to a certain extent, so as to improve the warping condition at this position. Figure 1The final unfolded state of the flexible screen 40 refers to the state in which the length of the flexible screen on the front side Q is the longest and the length of the flexible screen on the back side R is the shortest, that is, the flexible screen is fully unfolded, so that the size of the sliding display device along the first direction F reaches the maximum.

[0116] In some embodiments, the control method of the scroll display device further includes:

[0117] When it is determined that the flexible screen body 40 needs to be rolled up, it is detected whether the first support body 301 and the second support body 302 are in the initial state without length change; if not, the first support body 301 and the second support body 302 that are not in the initial state are controlled to extend or shrink to the initial state. In this way, the space occupied by the sliding reel assembly 20 during the rolling process can be minimized.

[0118] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A sliding and rolling mechanism for a flexible screen, characterized in that: The sliding and rolling mechanism comprises: Main frame; and A sliding reel assembly, the sliding reel assembly comprising: a central axis configured to be able to move toward or away from the main frame along a first direction; and A plurality of support bodies are arranged on the central axis at intervals along the circumferential direction around the axis of the central axis, the support bodies are capable of supporting the flexible screen body, and one end of the flexible screen body is connected to the main frame, so that the flexible screen body can be rolled up or unfolded when the central axis reciprocates along the first direction; The plane parallel to the first direction is the first plane, the plane perpendicular to the first direction and orthogonal to the first plane is the second plane, the intersection of the first plane and the second plane coincides with the axis of the central axis; the two regions located on the side of the second plane away from the main frame and between the first plane and the second plane are the first region and the second region respectively; At least part of the supports located in the first area and the second area are configured as retractable first supports, and at least part of the first supports are configured to be able to extend when the flexible screen is unfolded; The angle α between the extension direction of the first support body and the first plane satisfies the condition: 5°<α<75°; The plurality of support bodies further include a second support body whose extension direction is parallel to the second plane and faces the front side of the flexible screen body in the unfolded state; the second support body is configured to be extendable and retractable, and retracts when the flexible screen body is in the unfolded state; The plurality of support bodies further include a third support body, the third support body is configured to have a non-adjustable length, and at least a portion of the third support body is located on a side of the second plane away from the main frame.

2. The sliding and rolling mechanism according to claim 1, characterized in that: A first supporting body is provided in each of the first region and the second region, and an included angle α between the extension and retraction directions of the two first supporting bodies and the first plane is 45°.

3. The sliding and rolling mechanism according to claim 1, characterized in that: The third support body comprises: at least two second carriers connected to the central axis; and The third carrier is rotatably disposed around a rotation axis on a side of the at least two second carriers away from the central axis and is used to support the flexible screen, wherein the rotation axis of the third carrier is parallel to the axis of the central axis.

4. The sliding and rolling mechanism according to any one of claims 1 to 3, characterized in that: The first support and the second support both include: at least two telescopic rods connected to the central axis; A driving assembly, disposed on the central axis and configured to drive each of the telescopic rods to extend and retract synchronously; A first carrier, rotatably disposed around a rotation axis at one end of the at least two telescopic rods away from the central axis, and used to support the flexible screen; Wherein, the rotation axis of the first carrier is parallel to the axis of the central axis.

5. The sliding and rolling mechanism according to claim 4, characterized in that: The drive assembly comprises: A first transmission member, rotatably connected to the central shaft about a rotation axis; At least two second transmission members are meshed with the first transmission member, and the end of each telescopic rod facing away from the central axis is connected to a second transmission member. The second transmission member is configured to move along the axis of the telescopic rod when the first transmission member rotates, so as to drive the telescopic rods connected to the second transmission members to extend and retract synchronously.

6. The sliding and rolling mechanism according to claim 5, characterized in that: The first transmission member is configured as a gear shaft, and the second transmission member is configured as a rack.

7. A scroll display device, characterized in that: It comprises a flexible screen body and a sliding and rolling mechanism as claimed in any one of claims 1 to 6; Wherein, the flexible screen body is wound around the plurality of support bodies of the sliding scroll assembly, and one end is connected to the main frame.

8. The scroll display device according to claim 7, characterized in that: The sliding and rolling mechanism further comprises a frame, and the frame is used to support the central axis; The frame is provided with a first matching portion, and the main frame is provided with a second matching portion. The first matching portion and the second matching portion are guided and matched along the first direction so that the frame is slidably connected to the main frame along the first direction.

9. The scroll display device according to claim 7, characterized in that: The scrolling display device further includes a controller, which is configured to control at least a portion of the first support body to extend when the flexible screen body is unfolded.

10. A method for controlling a scroll display device, characterized in that: The scrolling display device is the scrolling display device according to any one of claims 7 to 9; The control method of the scroll display device comprises: Determining whether to unfold the flexible screen; If so, at least a portion of the first support body is controlled to extend to reduce the curvature of the bending area of ​​the flexible screen body.

11. The control method of the scroll display device according to claim 10, characterized in that: The control method of the scroll display device further includes: Determining whether the flexible screen is in a fully unfolded final state; If so, the second support body is controlled to retract.

12. The control method of the scroll display device according to claim 10, characterized in that: The control method of the scroll display device further includes: When it is determined that the flexible screen needs to be rolled up, detecting whether each of the first support body and the second support body is in an initial state where no length change occurs; If not, the first support body and the second support body that are not in the initial state are controlled to extend or contract to the initial state.

Images