Screen body supporting device and display device

Abstract

The application provides a screen body supporting device and a display device, and solves the problem that a flexible display screen is prone to collapse deformation after long-term use in the prior art. The screen body supporting device comprises a rotating shaft, a first screen body supporting surface and a first transmission assembly. The rotating shaft comprises a guide surface surrounding the rotating axis of the rotating shaft, and the guide surface is used for guiding the rolling and / or flattening of the flexible display screen. The first screen body supporting surface is parallel to the rotating shaft. The first transmission assembly is used for driving the synchronous movement of the first screen body supporting surface and the rotating shaft. The screen body supporting device comprises a retracted state and a first flattened state; in the retracted state, the plane in which the first screen body supporting surface is located penetrates the guide surface; when the rotating shaft rotates, the first transmission assembly synchronously drives the first screen body supporting surface to move in a first direction, the first direction is perpendicular to the first screen body supporting surface, so as to switch to the first flattened state; in the first flattened state, the first screen body supporting surface is tangent to the guide surface.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a screen support device and a display device. Background Technology

[0002] In an era of rapid development in flexible display technology, display devices equipped with flexible displays have emerged. When a flexible display is unfolded, it deforms under its own weight and external pressure during use, which can significantly shorten its lifespan over time. How to avoid or mitigate this deformation of flexible displays has always been one of the technical problems that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] In view of this, embodiments of this application provide a screen support device and a display device to solve the problem that flexible displays are prone to collapse and deformation after long-term use in the prior art.

[0004] The first aspect of this application provides a screen support device, including: a rotating shaft, a first screen support surface, and a first transmission assembly. The rotating shaft includes a guide surface surrounding a rotation axis of the rotating shaft, the guide surface being used to guide the flexible display screen to roll up and / or flatten. The first screen support surface is parallel to the rotating shaft. The first transmission assembly is used to drive the first screen support surface and the rotating shaft to move synchronously. The screen support device includes a retracted state and a first flattened state; in the retracted state, the plane containing the first screen support surface penetrates the guide surface; when the rotating shaft rotates, the first transmission assembly synchronously drives the first screen support surface to move along a first direction, the first direction being perpendicular to the first screen support surface, to switch to the first flattened state; in the first flattened state, the first screen support surface and the guide surface are tangent. Therefore, when the screen support device is unfolded, the first screen support surface can rise to provide support for the flexible display screen, thereby reducing the risk of collapse and deformation of the flexible display screen and improving the service life of the display device.

[0005] In conjunction with the first aspect, in some implementations, the screen support device further includes a second flattened state. In the second flattened state, there is a first gap between the end of the first screen support surface near the rotating shaft and the rotating shaft; in the first flattened state, there is a second gap between the end of the first screen support surface near the rotating shaft and the rotating shaft, the second gap being smaller than the first gap. When the rotating shaft rotates, the first transmission component synchronously drives the first screen support surface to move first along a second direction, parallel to the first screen support surface and away from the rotating shaft, to switch from the folded state to the second flattened state, and then moves along the first direction to switch from the second flattened state to the first flattened state. By controlling the first screen support surface to first translate in the first direction and then lift in the second direction, the volume of the screen support device in the folded state can be reduced.

[0006] In conjunction with the first aspect, in some implementations, the first transmission component includes a first rod and a second rod; the first rod extends along a second direction and includes a first threaded region and a second threaded region, the first threaded region being located at the end of the second threaded region away from the axis of rotation; the diameter of the first threaded region increases in the direction away from the axis of rotation, and the diameter of the second threaded region is equal at all points; the first end of the second rod is fixedly connected to the support surface of the first screen body; in a first flattened state, the second end of the second rod is threadedly connected to the first threaded region; in a second flattened state, the second end of the second rod is threadedly connected to the second threaded region. The advantages of this approach are simple structure, ease of implementation, and low cost.

[0007] In conjunction with the first aspect, in some implementations, the first transmission assembly further includes a worm gear, a worm, a gear, and a third rod. The worm gear is coaxially fixed to the rotating shaft; the worm extends along a second direction and includes a first external helical groove and a second external helical groove, the first external helical groove meshing with the worm gear and the second external helical groove meshing with the third rod; the third rod extends along a first direction, and its first end is rotatably connected to the end of the first rod near the rotating shaft; the first rod also includes an external gear region located on the side of the second threaded region near the rotating shaft; the gear is coaxially fixed to the end of the worm away from the worm gear; in a first flattened state and a second flattened state, the gear meshes with the external gear region of the first rod. The advantage of this is that the first transmission assembly is driven by the rotating shaft, eliminating the need for an additional power source and reducing costs.

[0008] In conjunction with the first aspect, in some implementations, the first transmission assembly further includes a fourth rod extending along the second direction; the second end of the third rod has a through hole, the first end of the fourth rod passes through the through hole, and the second end is fixedly connected to the second rod. The advantage of this is that the fourth rod is used to limit the movement of the second rod, ensuring a more robust structure.

[0009] In conjunction with the first aspect, in some implementations, the screen support device further includes: a second screen support surface located on the same side of the pivot as the first screen support surface, and tangent to the guide surface; a main body including a third screen support surface located at the end of the second screen support surface away from the pivot, the third screen support surface being coplanar with the second screen support surface, and the third and second screen support surfaces forming a fork-tooth structure; and a distance adjustment mechanism connecting the pivot and the main body. In the retracted state, the fork-tooth structure is in a crossed state; in the first flattened state, the fork-tooth structure is in a separated state; in the second flattened state, the first screen support surface is located between the second and third screen support surfaces; during the transition from the retracted state to the second flattened state, the distance adjustment mechanism drives the main body to move away from the pivot. By setting the second and third screen support surfaces to a fork-tooth structure, the support surface formed by the second and third screen support surfaces can be extended during the flattening process, further providing better support for the flexible display screen and preventing the flexible display screen from collapsing or deforming.

[0010] In conjunction with the first aspect, in some implementations, the screen support device also includes a second transmission component connecting the rotating shaft and the second screen support surface. The advantage of this is that by using the rotating shaft to drive the second transmission component, no additional power source is needed, thus reducing costs.

[0011] In conjunction with the first aspect, in some implementations, the second transmission assembly includes a first guide wheel, a second guide wheel, and a transmission belt. The axes of the first and second guide wheels are coplanar, and the plane containing the axes of the first and second guide wheels is parallel to the primary screen support surface. The first and second guide wheels are connected by a transmission belt, the first guide wheel is connected to a gear in the rotating mechanism, and the transmission belt is fixedly connected to the second screen support surface. The advantage of this design is its simplicity and ease of implementation.

[0012] In conjunction with the first aspect, in some implementations, the orthographic projections of the first and second transmission components at least partially overlap in the second direction. This has the advantage of reducing the volume of the screen support device in the retracted state.

[0013] A second aspect of this application provides a display device, comprising: a screen support device provided in any embodiment of this application; and a flexible display screen, at least partially rolled up on the guide surface.

[0014] The screen support device and display device provided according to the embodiments of this application include a retracted state and a first flattened state. In the retracted state, the plane containing the first screen support surface penetrates the guide surface. During the transition from the retracted state to the first flattened state, a first transmission component drives the first screen support surface to move along a first direction perpendicular to the first screen support surface until the first screen support surface and the guide surface are tangent. Therefore, when the screen support device is unfolded, the first screen support surface can rise to provide support for the flexible display screen, thereby reducing the risk of collapse and deformation of the flexible display screen and improving the service life of the display device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the display device provided in the embodiment of this application in a retracted state.

[0016] Figure 2 for Figure 1 The diagram shows the display device in its first flattened state.

[0017] Figure 3 for Figure 1 The diagram shows the display device in its second flattened state.

[0018] Figure 4 This is a schematic diagram of a structure in which the third screen support surface and the second screen support surface are in an intersecting state, according to an embodiment of this application.

[0019] Figure 5 This is a schematic diagram of a structure provided in an embodiment of this application, showing the third screen support surface and the second screen support surface in a separated state. Detailed Implementation

[0020] As mentioned in the background section, when a flexible display screen is unfolded, it is prone to collapse and deformation under its own weight and / or external pressure during use. To address this issue, this application provides a screen support device and a display device. The screen support device includes a retracted state and a first flattened state. In the retracted state, the plane containing the first screen support surface penetrates the guide surface. During the transition from the retracted state to the first flattened state, a first transmission component drives the first screen support surface to move along a first direction perpendicular to the first screen support surface until the first screen support surface and the guide surface are tangent. Therefore, when the screen support device is unfolded, the first screen support surface can rise to provide support for the flexible display screen, thereby reducing the risk of collapse and deformation and extending the lifespan of the display device.

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Figure 1 This is a schematic diagram of the display device provided in the embodiment of this application in a retracted state. Figure 2 for Figure 1 The diagram shows the display device in its first flattened state. (Combined with...) Figure 1 and Figure 2 As shown, the display device includes a screen support device 10 and a flexible display screen 20. The screen support device includes a guide surface S, to which the flexible display screen 20 is at least partially rolled up. The screen support device 10 supports the flexible display screen 20 and carries the flexible display screen 20 when rolled up and / or flattened.

[0023] Combination Figure 1 and Figure 2 As shown, the screen support device 10 includes a rotating shaft 11, a first screen support surface 12, and a first transmission component.

[0024] The rotating shaft 11 includes a guide surface S, which surrounds the rotation axis of the rotating shaft 11. The guide surface S can be a sidewall of the rotating shaft 111. The guide surface S is used to guide the flexible display screen 20 to roll up and / or flatten.

[0025] The first screen support surface 12 is parallel to the rotating shaft 11. As the screen support device 10 switches states, the first screen support surface 12 translates between the axis of the rotating shaft 11 and the tangential plane of the guide surface S. In the retracted state, the plane containing the first screen support surface 12 penetrates the guide surface S, that is, it passes through the area between the guide surface S and the rotating shaft 11. In the first flattened state, the first screen support surface 12 and the guide surface S are tangent.

[0026] The first transmission assembly is used to drive the first screen support surface 12 and the rotating shaft 11 to move synchronously, so that the first screen support surface 12 translates between the axis of the rotating shaft 11 and the tangential plane of the guide surface S. The synchronous movement mentioned here means that when the rotating mechanism 11 rotates, the first transmission assembly drives the first screen support surface 12 to move; when the rotating mechanism 11 stops rotating, the first transmission assembly stops driving the first screen support surface 12 to move. For example, for... Figure 1 and Figure 2In the display device shown, when the rotating shaft 11 rotates, the first transmission component drives the first screen support surface 12 to move along the first direction x, which is perpendicular to the first screen support surface 12, until the first screen support surface 12 and the guide surface S are tangent, thereby switching to the first flattened state, as shown. Figure 2 As shown.

[0027] Specifically, the first transmission assembly includes a first rod 131 and a second rod 132. The first rod 131 extends along a second direction y, which is perpendicular to the first direction x. The second rod 132 extends along the first direction x. The first rod 131 includes a first threaded region S1, in which the diameter of the first rod 131 gradually increases. For example, in the first threaded region S1, the first rod 131 is frustum-shaped. The first end of the second rod 132 is provided with a groove, which slides in engagement with the first threaded region S1. The second end of the second rod 132 is fixedly connected to the first screen support surface 12. When the first rod 131 is driven to rotate by an external force, the first rod 131 drives the second rod 132 to climb or descend in the first threaded region S1, thereby lifting and pulling the first screen support surface 12. When the flexible display screen 20 is unfolded, by controlling the rotation direction of the first rod 131, the first screen support surface 12 is lifted to be tangent to the guide surface S, thereby providing support for the flexible display screen 20.

[0028] It should be understood that in this case, the first transmission component can also be implemented as other lifting mechanisms, such as lead screw structure, rack and pinion structure, etc.

[0029] like Figure 1 and Figure 2 The display device shown may also include a second flattened state, which is an intermediate state between the collapsed state and the first flattened state. Figure 3 for Figure 1 The diagram shows the display device in its second flattened state. (Combined with...) Figure 1 , Figure 2 and Figure 3 As shown, when the rotating shaft 11 rotates, the first transmission component drives the first screen support surface 12 to move first along the second direction y, so as to move from... Figure 1 The collapsed state shown has been switched to Figure 3 The second flattened state shown is then moved along the first direction x to... Figure 3 The second flattened state shown has been switched to Figure 2 The first flattened state is shown. That is, for Figure 1 , Figure 2 and Figure 3 In the case of the display device shown, the first transmission component drives the first screen support surface 12 to first move horizontally to the right, and then move vertically upward.

[0030] In this case, the first rod 131 also includes a second threaded region S2, located at the end of the first threaded region S1 near the shaft 11. In the second threaded region S2, the diameter of the first rod 131 is equal at all points. The threads of the second threaded region S2 and the first threaded region S1 are smoothly connected as a single integrated structure. Figure 3 In the second flattened state shown, the second rod 132 and the second threaded region S2 are engaged; in Figure 2 In the first flattened state shown, the second rod 132 and the first threaded region S1 are engaged.

[0031] By setting the first transmission component to drive the first screen support surface 12 to first move to the right and then move vertically upward, the space on the right side of the rotating shaft 11 in the retracted state can be reduced, thereby reducing the size of the display device.

[0032] Combination Figure 1 , Figure 2 and Figure 3 As shown, the first transmission assembly may further include: a worm gear 133, a worm 134, a gear 135, and a third rod 136. The worm gear 133 is coaxially fixed to the rotating shaft 11. The worm 134 extends along the second direction y, and includes a first external helical groove and a second external helical groove. The first external helical groove meshes with the worm gear 133, and the second external helical groove meshes with the third rod 136. The third rod 136 extends along the first direction x, and the first end of the third rod 136 is rotatably connected to the end of the first rod 131 near the rotating shaft 11. The first rod 131 also includes an external gear region S3, which is located on the side of the second threaded region S2 near the rotating shaft 11. The gear 135 is coaxially fixed to the end of the worm 134 away from the worm gear 135. In the first flattened state and the second flattened state, the gear 135 meshes with the external gear region S3 of the first rod 131.

[0033] In this configuration, the rotation of the shaft 11 drives the worm gear 134 to rotate. The rotation of the worm gear 134 drives the third rod 136 to translate along the second direction y, for example, horizontally to the right, while simultaneously driving the gear 135 to rotate. When the gear 135 meshes with the external gear region S3, the gear 135 drives the first rod 131 to rotate. The rotation of the first rod 131 drives the second rod 132 to move first along the second direction y, and then along the first direction x. It is evident that by configuring the worm gear 133, worm 134, gear 135, and third rod 136, the shaft 11 can drive the first transmission assembly without requiring an additional power source for the first transmission assembly, achieving energy savings and reducing costs.

[0034] Combination Figure 1 , Figure 2 and Figure 3As shown, the first transmission assembly may further include a fourth rod 137 extending along the second direction y. The second end of the third rod 136 has a through hole, the first end of the fourth rod 137 passes through the through hole, and the second end is fixedly connected to the second rod 132. The fourth rod 137 effectively limits the movement of the second rod 132, ensuring a more robust structure.

[0035] Combination Figure 1 , Figure 2 and Figure 3 As shown, the screen support device 10 may further include: a second screen support surface 14, a main body 15, and a distance adjustment mechanism (not shown in the figure).

[0036] The second screen support surface 14 and the first screen support surface 12 are located on the same side of the rotating shaft 11. For example, as Figure 1 , Figure 2 and Figure 3 As shown, the second screen support surface 14 and the first screen support surface 12 are both located on the right side of the rotating shaft 11. The second screen support surface 14 is tangent to the guide surface S.

[0037] The main body 15 includes a third screen support surface 151, which is located at the end of the second screen support surface 14 away from the rotation axis 11. The third screen support surface 151 and the second screen support surface 14 are coplanar. The third screen support surface 151 and the second screen support surface 14 form a fork-tooth structure. The shape of the fork-tooth structure can be reasonably set according to actual needs, such as rectangular strip fork teeth.

[0038] The distance adjustment mechanism connects the rotating shaft 11 and the main body 15. The distance adjustment mechanism can be a rack and pinion mechanism, a lead screw mechanism, etc.

[0039] Figure 4 This is a schematic diagram of a structure in which the third screen support surface and the second screen support surface are in an intersecting state, according to an embodiment of this application. Figure 5 This is a schematic diagram of a structure provided in an embodiment of this application, showing the third screen support surface and the second screen support surface in a separated state. (Combined with...) Figures 1-5 As shown, in the retracted state, the fork structure is in a crossed state. In the first flattened state, the fork structure is in a separated state. In the second flattened state, the first screen support surface 12 is located between the second screen support surface 14 and the third screen support surface 14. During the transition from the retracted state to the second flattened state, the distance adjustment mechanism drives the main body 15 to move away from the rotating shaft 11.

[0040] By implementing the third screen support surface 151 and the second screen support surface 14 as a fork-tooth structure, the area of ​​the support surface can be extended during the separation of the second screen support surface 14 and the third screen support surface 151, thereby providing better support for the flexible display screen.

[0041] Combination Figure 1 , Figure 2 and Figure 3 As shown, the screen support device 10 may further include a second transmission assembly. The second transmission assembly is rotatably connected to the rotating mechanism 11 and fixedly connected to the second screen support surface 14. The second transmission assembly is located on the side of the first transmission assembly 13 closest to the second screen support surface 14. In the first direction x, the orthographic projection of the second transmission assembly and the orthographic projection of the first transmission assembly 13 at least partially overlap. This reduces the distance between the rotating mechanism 11 and the main body 15 in the retracted state, thereby reducing the volume of the screen support device 10.

[0042] Specifically, the second transmission assembly includes a first guide wheel 161, a second guide wheel 162, and a transmission belt 163. The axes of the first guide wheel 161 and the second guide wheel 162 are coplanar, and the plane containing the axes of the first guide wheel 161 and the second guide wheel 162 is parallel to the first screen support surface 12. The first guide wheel 161 and the second guide wheel 162 are connected by the transmission belt 163. The first guide wheel 161 is connected to the gear of the rotating mechanism 11, and the transmission belt 163 is fixedly connected to the second screen support surface 14.

[0043] By setting up a second transmission component, the rotation of the rotating shaft 11 can drive the second screen support surface 14 without the need to set up an additional power source for the second screen support surface 14, thus saving costs.

[0044] Figures 1-5 The operation of the display device shown includes:

[0045] by Figure 1 Starting from the retracted state, the distance adjustment mechanism drives the main body 15 to slide to the right along the second direction y, simultaneously driving the rotating shaft 11 to rotate. The rotating shaft 11 drives the worm gear 133 and the first guide wheel 161 to rotate. The worm gear 133 drives the worm 134 to rotate. The worm 134 drives the gear 135 to rotate and drives the third rod 136 to translate to the right. The third rod 136 drives the first rod 131 to translate to the right. When the gear 135 meshes with the external gear area S3, the gear 135 drives the first rod 131 to rotate. The first guide wheel 161 drives the second screen support surface 14 to translate to the left via the transmission belt 163. When the second rod 132 meshes with the second thread area S2, and the second screen support surface 14 and the third screen support surface 151 are completely separated, the first unfolded state is entered.

[0046] Starting from the first unfolded state, the first rod 131 drives the second rod 132 to translate to the right. The second rod 132 drives the first screen support surface 12 to translate to the right. When the second rod 132 engages with the first threaded area S1, the second rod 132 drives the first screen support surface 12 to translate upward. At the same time, the first guide wheel 161 drives the second screen support surface 14 to continue to translate to the left via the transmission belt 163. When the first screen support surface 12 moves between the second screen support surface 14 and the third screen support surface 151 and is tangent to the guide surface S, it enters the second flattened state.

[0047] This application also provides a screen support device, the specific structure of which can be found in the display device embodiment.

[0048] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A screen support device, characterized in that, include: A pivot, including a guide surface surrounding a rotation axis of the pivot, the guide surface being used to guide the flexible display screen to roll up and / or flatten; The first screen support surface is parallel to the rotating shaft; and The first transmission component is used to drive the first screen support surface and the rotating shaft to move synchronously. The screen support device includes a retracted state and a first flattened state. In the retracted state, the plane containing the first screen support surface penetrates the guide surface. When the rotating shaft rotates, the first transmission component synchronously drives the first screen support surface to move along a first direction, which is perpendicular to the first screen support surface, to switch to the first flattened state. In the first flattened state, the first screen support surface and the guide surface are tangent. The screen support device further includes a second flattened state. In the second flattened state, there is a first gap between the end of the first screen support surface near the rotating shaft and the rotating shaft. In the first flattened state, there is a second gap between the end of the first screen support surface near the rotating shaft and the rotating shaft, and the second gap is greater than the first gap. When the rotating shaft rotates, the first transmission component synchronously drives the first screen support surface to move along the second direction, which is parallel to the first screen support surface and away from the rotating shaft, so as to switch from the retracted state to the second flattened state, and then move along the first direction to switch from the second flattened state to the first flattened state. The first transmission assembly includes a first rod and a second rod; the first rod extends along the second direction, and includes a first threaded region and a second threaded region, the first threaded region being located at the end of the second threaded region away from the rotating shaft; the diameter of the first threaded region increases in the direction away from the rotating shaft, and the diameter of the second threaded region is equal at all points; the first end of the second rod is fixedly connected to the first screen support surface, and in the first flattened state, the second end of the second rod is threadedly connected to the first threaded region, and in the second flattened state, the second end of the second rod is threadedly connected to the second threaded region; The first transmission assembly further includes a worm gear, a worm, a gear, and a third rod; the worm gear is coaxially fixed to the rotating shaft; the worm extends along the second direction, and the worm includes a first external helical groove and a second external helical groove, the first external helical groove meshing with the worm gear, and the second external helical groove meshing with the third rod; the third rod extends along the first direction, and a first end of the third rod is rotatably connected to the end of the first rod near the rotating shaft; the first rod further includes an external gear region, the external gear region being located on the side of the second threaded region near the rotating shaft; the gear is coaxially fixed to the end of the worm away from the worm gear; in the first flattened state and the second flattened state, the gear meshes with the external gear region of the first rod.

2. The screen support device according to claim 1, characterized in that, The first transmission assembly further includes a fourth rod extending along the second direction; the second end of the third rod is provided with a through hole, the first end of the fourth rod passes through the through hole, and the second end is fixedly connected to the second rod.

3. The screen support device according to claim 1 or 2, characterized in that, Also includes: The second screen support surface is located on the same side of the rotating shaft as the first screen support surface, and the second screen support surface is tangent to the guide surface; The main body includes a third screen support surface located at the end of the second screen support surface away from the pivot axis. The third screen support surface and the second screen support surface are coplanar, and the third screen support surface and the second screen support surface form a fork-tooth structure. A distance adjustment mechanism connects the rotating shaft and the main body. In the retracted state, the fork structure is in a crossed state; in the first flattened state, the fork structure is in a separated state. In the second flattened state, the first screen support surface is located between the second screen support surface and the third screen support surface; during the process of switching from the retracted state to the second flattened state, the distance adjustment mechanism drives the main body to move away from the pivot.

4. The screen support device according to claim 3, characterized in that, It also includes a second transmission component that connects the rotating shaft and the second screen support surface.

5. The screen support device according to claim 4, characterized in that, The second transmission assembly includes a first guide wheel, a second guide wheel, and a transmission belt. The axes of the first guide wheel and the second guide wheel are coplanar, and the plane containing the axes of the first guide wheel and the second guide wheel is parallel to the first screen support surface. The first guide wheel and the second guide wheel are connected by the transmission belt. The first guide wheel is connected to the rotating shaft gear, and the transmission belt is fixedly connected to the second screen support surface.

6. The screen support device according to claim 4, characterized in that, In the second direction, the orthographic projection of the first transmission component and the orthographic projection of the second transmission component at least partially overlap.

7. A display device, characterized in that, include: The screen support device according to any one of claims 1-6; and A flexible display screen, at least partially rolled up on the guiding surface.

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